Fastening device

Abstract

The invention provides a fastening device. The fastening device comprises a shell unit, a wire coil, a braking unit, a torsion unit and a knob, the shell unit comprises an accommodating space. The wire coil is accommodated in the accommodating space and is used for winding a tying wire; the detent unit is located on the wire coil along an axis. The torsion unit is located on the braking unit along the axis and comprises at least one torsion part. The knob covers the housing unit. Wherein the knob rotates towards a tightening direction, so that the torsion unit is linked with the braking unit, and the knob is allowed to drive the wire coil to rotate towards the tightening direction and collect the tying wire; when the force applied to the at least one torsion part exceeds a threshold value, the wire coil cannot rotate towards the tightening direction. Therefore, excessive binding of the tying line is avoided.

Description

Technical Field

[0001] The invention relates to a fastening device, and in particular to a fastening device capable of retracting and releasing a tie line. Background Art

[0002] In daily life, we often use ropes and ties to tie things up. The most common way to tie things up is to use the rope to go back and forth through the holes on the things and then secure them with a knot, such as tying ropes to shoes. However, this method of tying things up can easily cause the knot to loosen due to external forces, which not only requires retying the knot, but also brings a lot of inconvenience because the things cannot be tied up firmly.

[0003] In order to solve this problem, some industry insiders have developed a simple cable tie mechanism, which includes a housing, a detent unit and a spring. The housing has a through hole for the wire to pass through. The wire is clamped between the detent unit and the housing through the force between the spring and the detent unit to achieve a tightening effect. Pressing the spring to change the position of the detent unit can pull the wire to change its length. However, this cable tie mechanism provides tightening force through the reset force of the spring, and it is still easy for the wire to loosen due to vibration or external force. In addition, this cable tie mechanism has no space to accommodate the wire, so the exposed wire is also easy to cause danger.

[0004] Therefore, another industry has developed another type of buckle that can rotate and tighten the wire. The wire can be placed inside the buckle, and the length of the wire can be adjusted through the mechanical force interference of the internal components, and the tightness of the tightening can be adjusted at the same time. However, if the buckle is continuously operated to increase the tightening force when the wire is already tightened, it may exceed the range that the wire can withstand, resulting in the wire (tie) breaking or damage to the tied object.

[0005] In view of this, how to solve the above problems has become the goal of relevant industries. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a fastening device, which can avoid the tie line from being broken due to excessive contraction through its structural configuration.

[0007] According to one embodiment of the present invention, a fastening device is provided, comprising a housing unit, a wire drum, a detent unit, a torque unit and a knob. The housing unit comprises a storage space. The wire drum is accommodated in the storage space and is provided for winding a tie wire. The detent unit is located on the wire drum along an axis. The torque unit is located on the detent unit along the axis and comprises at least one torque part. The knob cover is disposed on the housing unit. The rotation of the knob in a tightening direction causes the torque unit to link the detent unit, so as to allow the knob to drive the wire drum to rotate in the tightening direction and tighten the tie wire; when a force applied to the aforementioned at least one torque part exceeds a threshold value, the wire drum cannot rotate in the tightening direction.

[0008] Thereby, when the force applied to the torque unit exceeds a threshold value, the user cannot use the knob to rotate the cable reel, thereby preventing the cable from being over-tightened.

[0009] According to the fastening device of the aforementioned embodiment, the detent unit may include at least one engaging portion, and the torque unit further includes at least one engaging portion correspondingly engaged with the at least one engaging portion, and the at least one engaging portion and the at least one torque portion are offset in a radial direction.

[0010] According to the fastening device of the aforementioned embodiment, the torsion unit may include a torsion ring body, the at least one engaging portion is disposed at an inner edge of the torsion ring body, and the at least one torsion portion is located at an outer edge of the torsion ring body.

[0011] According to the fastening device of the aforementioned embodiment, the detent unit may include a detent ring body and a boss, the boss is integrally connected to the detent ring body along the axis, the aforementioned at least one engaging portion is arranged on the boss, and at least one deformation space is formed between the inner edge of the torque ring body and at least one side edge of the boss to allow the aforementioned at least one torque portion to deform radially inward.

[0012] According to the fastening device of the aforementioned embodiment, the knob may include at least one pushing portion corresponding to the aforementioned at least one torque portion. When the force applied to the aforementioned at least one torque portion exceeds a threshold, the aforementioned at least one torque portion is deformed to allow the aforementioned at least one pushing portion to move from one side of the aforementioned at least one torque portion to the other side of the aforementioned at least one torque portion.

[0013] According to the fastening device of the aforementioned embodiment, the at least one torque portion may include a force-bearing inclined surface, and the at least one pushing portion may include a pushing inclined surface corresponding to the force-bearing inclined surface of the at least one torque portion.

[0014] According to the fastening device of the aforementioned embodiment, the torque unit may include a torque ring body, the at least one engaging portion is disposed on an upper edge of the torque ring body, and the at least one torque portion is located on an inner edge of the torque ring body.

[0015] According to the fastening device of the aforementioned embodiment, the braking unit may further include at least one force-bearing portion corresponding to the aforementioned at least one torque portion. When the force applied to the aforementioned at least one torque portion exceeds a threshold, the aforementioned at least one torque portion is deformed to move from one side of the aforementioned at least one force-bearing portion to the other side of the aforementioned at least one force-bearing portion.

[0016] According to the fastening device of the aforementioned embodiment, the torque unit can be rotatably linked with the braking unit, the at least one torque part extends along the circumference of the torque unit, and the knob includes at least one pushing part to push a distal end of the at least one torque part to push the wire drum to rotate in the tightening direction; when the force exerted on the at least one torque part exceeds a threshold value, a friction force between a friction surface of the at least one torque part and an inner wall of the outer shell unit prevents the knob from driving the wire drum.

[0017] According to the fastening device of the aforementioned embodiment, the torque unit can be rotatably linked with the braking unit, the at least one torque part extends along the circumference of the torque unit and includes a torque tooth, and the knob includes at least one pushing part to push the at least one torque part to push the wire drum to rotate in the tightening direction; the outer shell unit includes a plurality of recesses, and when the force applied to the at least one torque part exceeds a threshold value, the at least one torque part bends so that the torque tooth engages with one of the plurality of recesses to prevent the knob from driving the wire drum.

[0018] According to one embodiment of the present invention, a fastening device is provided, comprising a housing unit, a wire drum, a knob, at least one ratchet arm and at least one torque part. The housing unit comprises a accommodating space and a plurality of engaging teeth. The wire drum is accommodated in the accommodating space and is provided for winding a tie line. The knob cover is disposed on the housing unit. The aforementioned at least one ratchet arm is accommodated in the accommodating space and corresponds to the at least one engaging tooth. The aforementioned at least one torque part is accommodated in the accommodating space and is rotationally linked with one of the knob and the ratchet arm. Among them, when the knob is rotated in a tightening direction, the knob drives the aforementioned at least one ratchet arm to rotate, allowing the wire drum to rotate in the tightening direction and tighten the tie line; when the tension of the tie line is too tight, the aforementioned at least one torque part prevents the wire drum from rotating in the tightening direction.

[0019] The fastening device according to the aforementioned embodiment may further include a connecting unit, one end of the connecting unit is connected to the knob, and the other end of the connecting unit is coupled to the wire reel.

[0020] According to the fastening device of the aforementioned embodiment, the connecting unit may include a positioning rod, and the wire drum includes a flexible clamping portion coupled to the positioning rod.

[0021] The fastening device according to the aforementioned embodiment may further include a torsion ring body and at least one embedding portion, wherein the at least one embedding portion and the at least one torsion portion are arranged at intervals on the torsion ring body.

[0022] The fastening device according to the aforementioned embodiment may further include a detent ring body, a boss and at least one engaging portion, wherein the at least one engaging portion is arranged on an inner edge of the torque ring body, the at least one torque portion is located on an outer edge of the torque ring body, the at least one ratchet arm is arranged on the detent ring body, the boss is integrally connected to the detent ring body along an axis, the at least one engaging portion is arranged on the boss and corresponds to the at least one engaging portion, so that the at least one torque portion and the at least one ratchet arm are rotated in conjunction, and at least one deformation space is formed between the inner edge of the torque ring body and at least one side edge of the boss, so that the at least one torque portion can deform inward along a radial direction.

[0023] According to the fastening device of the aforementioned embodiment, the knob may include at least one pushing portion corresponding to the aforementioned at least one torque portion. When a force applied to the aforementioned at least one torque portion exceeds a threshold value, the aforementioned at least one torque portion is deformed to allow the aforementioned at least one pushing portion to move from one side of the aforementioned at least one torque portion to the other side of the aforementioned at least one torque portion.

[0024] The fastening device according to the aforementioned embodiment may further include a detent ring and at least one force-bearing portion, wherein the at least one force-bearing portion is arranged on the detent ring and corresponds to the at least one torque portion, and the at least one engaging portion is arranged on an upper edge of the torque ring and is engaged with the knob to limit the rotation of the torque ring and the knob, and the at least one torque portion is located at an inner edge of the torque ring. When a force applied to the at least one torque portion exceeds a threshold value, the at least one torque portion is deformed to move from one side of the at least one force-bearing portion to the other side of the at least one force-bearing portion.

[0025] According to the fastening device of the aforementioned embodiment, the at least one torque part can be rotatably linked with the at least one ratchet arm, and the knob includes at least one pushing part to push the at least one torque part to push the wire drum to rotate in the tightening direction; when a force applied to the at least one torque part exceeds a threshold value, a friction force between a friction surface of the at least one torque part and the outer shell unit prevents the knob from driving the wire drum.

[0026] According to the fastening device of the aforementioned embodiment, the at least one torque part can be rotatably linked with the at least one ratchet arm, the at least one torque part includes a torque tooth, and the knob includes at least one pushing part to push the at least one torque part to push the wire drum to rotate in the tightening direction; the outer shell unit includes a plurality of recesses, and when a force applied to the at least one torque part exceeds a threshold value, the at least one torque part bends so that the torque tooth engages with one of the plurality of recesses to prevent the knob from driving the wire drum.

[0027] According to the fastening device of the aforementioned embodiment, it may further include a detent ring body, in which the aforementioned at least one torque portion and the aforementioned at least one ratchet arm are spaced apart from each other on the detent ring body, and the outer shell unit further includes an annular wall and a partition portion, the partition portion protrudes inward from the annular wall to divide the accommodating space into an upper accommodating chamber and a lower accommodating chamber, the aforementioned multiple engaging teeth are located on the annular wall and in the upper accommodating chamber, and the aforementioned at least one torque portion is used to contact the partition portion and generate a friction force. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A three-dimensional schematic diagram of a fastening device according to a first embodiment of the present invention is shown;

[0029] Figure 2 Draw Figure 1 An exploded schematic diagram of the fastening device of the first embodiment;

[0030] Figure 3 Draw Figure 1 Another exploded schematic diagram of the fastening device of the first embodiment;

[0031] Figure 4 Draw Figure 1 A side cross-sectional schematic diagram of a fastening device according to a first embodiment;

[0032] Figure 5 Draw Figure 1 Another side cross-sectional schematic diagram of the fastening device of the first embodiment;

[0033] Figure 6 Draw Figure 4 A schematic top cross-sectional view of the fastening device of the first embodiment along the cutting line 6-6;

[0034] Figure 7 A three-dimensional schematic diagram of a fastening device according to a second embodiment of the present invention is shown;

[0035] Figure 8 Draw Figure 7 An exploded schematic diagram of the fastening device of the second embodiment;

[0036] Fig. 9 Draw Figure 7 Another exploded schematic diagram of the fastening device of the second embodiment;

[0037] Fig.10 Draw Figure 7 A side cross-sectional schematic diagram of a fastening device according to a second embodiment;

[0038] Fig.11 Draw Figure 7 Another side cross-sectional schematic diagram of the fastening device of the second embodiment;

[0039] Fig.12 Draw Fig.10 A schematic top cross-sectional view of the fastening device of the second embodiment along the cutting line 12-12;

[0040] Fig.13 A three-dimensional schematic diagram of a fastening device according to a third embodiment of the present invention is shown;

[0041] Fig.14 Draw Fig.13 An exploded schematic diagram of the fastening device of the third embodiment;

[0042] Fig.15 Draw Fig.13 Another exploded schematic diagram of the fastening device of the third embodiment;

[0043] Fig.16 Draw Fig.13 A side cross-sectional schematic diagram of a fastening device according to a third embodiment;

[0044] Fig.17 Draw Fig.13 Another side cross-sectional schematic diagram of the fastening device of the third embodiment;

[0045] Fig.18 Draw Fig.16 A schematic top cross-sectional view of the fastening device of the third embodiment along the cutting line 18-18;

[0046] Fig.19 A schematic three-dimensional diagram of a fastening device according to a fourth embodiment of the present invention is shown;

[0047] Fig. 20 Draw Fig.19 An exploded schematic diagram of a fastening device according to a fourth embodiment;

[0048] Fig.21 Draw Fig.19 Another exploded schematic diagram of the fastening device of the fourth embodiment;

[0049] Fig. 22 Draw Fig.19 A side cross-sectional schematic diagram of a fastening device of a fourth embodiment;

[0050] Fig.23 Draw Fig.19 Another side cross-sectional schematic diagram of the fastening device of the fourth embodiment;

[0051] Fig.24 Draw Fig. 22 A schematic top cross-sectional view of the fastening device of the fourth embodiment along the cutting line 24-24;

[0052] Fig.25 A schematic three-dimensional diagram of a fastening device according to a fifth embodiment of the present invention is shown;

[0053] Fig.26 Draw Fig.25 An exploded schematic diagram of a fastening device according to a fifth embodiment;

[0054] Fig. 27 Draw Fig.25 Another exploded schematic diagram of the fastening device of the fifth embodiment;

[0055] Fig.28 Draw Fig.25 A side cross-sectional schematic diagram of a fastening device of a fifth embodiment; and

[0056] Fig.29 Draw Fig.25 Another side cross-sectional schematic diagram of the fastening device of the fifth embodiment.

[0057]

Explanation of symbols

[0058] 100, 100a, 100b, 100c, 100d: Fastening device

[0059] 200,200a,200b,200c,200d: housing unit

[0060] 210,210b,210c: Ring wall

[0061] 211b,211c: Upper part

[0062] 220: Base

[0063] 230, 230d: spacer

[0064] 240,240b,240c: Occlusal teeth

[0065] 250: Center through hole

[0066] 260: Internal teeth

[0067] 270c: Depression

[0068] 300,300a,300b,300c,300d: Cable reel

[0069] 310: Upper ring

[0070] 320: Lower ring

[0071] 330: Flexible card part

[0072] 400,400a,400b,400c,400d: actuator unit

[0073] 410, 410d: Driving ring

[0074] 420,420a: Boss

[0075] 430,430d: ratchet arm

[0076] 440: Chimeric part

[0077] 450: Stopper

[0078] 460: Driving gear

[0079] 470a: Force bearing part

[0080] 480b: snap-fit ​​convex

[0081] 500,500a,500b,500c,500d: Knob

[0082] 510, 510b, 510c: Pushing part

[0083] 511: Push against the inclined surface

[0084] 512b: Top side

[0085] 520: Top slot

[0086] 530a: snap-fit ​​hole

[0087] 600: Positioning rod

[0088] 610: Positioning convex

[0089] 700,700a,700b,700c,700d: Transmission group

[0090] 710:Sun gear

[0091] 720: Plate

[0092] 730:Planetary gear

[0093] 800,800a,800b,800c: Torque unit

[0094] 810,810a,810b,810c,490d: Torque unit

[0095] 811: Load-bearing inclined plane

[0096] 812b: Friction surface

[0097] 813b: end plane

[0098] 814c: Torque gear

[0099] 820,820a,820b,820c: Torque ring

[0100] 830,830a: card embedding part

[0101] 840b: snap-fit ​​slot

[0102] A1: tightening direction

[0103] A2: Release direction

[0104] I1: Axis

[0105] S1: Deformation Space DETAILED DESCRIPTION

[0106] Embodiments of the present invention will be described below with reference to the accompanying drawings. For the sake of clarity, many practical details will be described together in the following description. However, the reader should understand that these practical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these practical details are not necessary. In addition, in order to simplify the drawings, some conventional structures and elements will be depicted in a simple schematic manner in the drawings; and repeated elements may be represented by the same number or similar number.

[0107] In addition, the terms "first", "second", "third", etc. in this article are only used to describe different elements or components, and do not limit the elements / components themselves. Therefore, the first element / component can also be renamed as the second element / component. Moreover, the combination of elements / components / mechanisms / modules in this article is not a generally known, conventional or conventional combination in this field. Whether the elements / components / mechanisms / modules themselves are conventional cannot be used to determine whether their combination relationship is easy to be easily completed by ordinary knowledgeable people in the technical field.

[0108] See also Figure 1 , Figure 2 and Figure 3 ,in Figure 1 FIG. 1 is a three-dimensional schematic diagram of a fastening device 100 according to a first embodiment of the present invention. Figure 2 Draw Figure 1 An exploded schematic diagram of the fastening device 100 of the first embodiment, Figure 3 Draw Figure 1 Another exploded schematic diagram of the fastening device 100 of the first embodiment. The fastening device 100 comprises a housing unit 200, a wire drum 300, a detent unit 400, a knob 500 and a torque unit 800.

[0109] The housing unit 200 includes a receiving space. The wire drum 300 is received in the receiving space and is used for winding a wire. The detent unit 400 is arranged along an axis I1 (shown in FIG. Figure 4) is located on the wire drum 300. The knob 500 is located on the detent unit 400 along the axis I1. The torque unit 800 is rotationally limited with one of the detent unit 400 and the knob 500, and can selectively transmit a rotation force of the knob 500 to the wire drum 300. When the knob 500 is rotated in a tightening direction A1, the knob 500 drives the detent unit 400 to rotate, allowing the wire drum 300 to rotate in the tightening direction A1 and tighten the tie line; when the tension of the tie line is too tight, the wire drum 300 cannot rotate in the tightening direction A1.

[0110] Thus, when the tie line is too tight, the user cannot use the knob 500 to rotate the cable drum 300, thereby preventing the tie line from being over-tightened. The details of the fastening device 100 will be described later.

[0111] The housing unit 200 of the fastening device 100 may further include an annular wall 210, a base 220, a spacer 230, a plurality of engaging teeth 240, a central through hole 250, and a plurality of inner teeth 260. The annular wall 210 defines a receiving space and includes an upper opening and a lower opening, and the upper opening and the lower opening communicate with the receiving space. The base 220 is detachably assembled to the annular wall 210 to close the lower opening, which may be engaged with each other by a chimerical manner, but is not limited thereto.

[0112] The partition 230 may protrude radially inward from the annular wall 210 to divide the accommodation space into an upper accommodation chamber and a lower accommodation chamber. The engaging teeth 240 are located on the annular wall 210 and in the upper accommodation chamber, and the inner teeth 260 are located on the annular wall 210 and in the lower accommodation chamber. The central through hole 250 may penetrate the partition 230 to connect the upper accommodation chamber to the lower accommodation chamber. The wire drum 300 may be accommodated in the lower accommodation chamber.

[0113] The wire drum 300 may include a wire drum body, an upper ring portion 310, a lower ring portion 320, a plurality of pivots, a wire drum center hole, and a flexible clamp portion 330. The upper ring portion 310 protrudes radially outward from the upper end of the wire drum body, and the lower ring portion 320 protrudes radially outward from the lower end of the wire drum body. A winding track is formed between the upper ring portion 310 and the lower ring portion 320 for winding the wire. The pivot is disposed on the upper surface of the wire drum body. The wire drum center hole penetrates the wire drum body and forms the inner wall of the wire drum. The flexible clamp portion 330 may include two clamp arms protruding downward from the inner wall of the wire drum to form a clamping space, and can be coupled with a connecting unit of the fastening device 100. This part will be described in detail later in the text.

[0114] The detent unit 400 may include a detent ring 410, three ratchet arms 430, three stoppers 450, and a plurality of driving teeth 460. The detent ring 410 is generally annular and has a central through hole. Each ratchet arm 430 protrudes outward from the detent ring 410 and has a cantilever structure, and can be deflected inward by force. Each stopper 450 protrudes outward from the detent ring 410 and corresponds to the distal end of each ratchet arm 430. When the ratchet arm 430 is deflected inward by force, it can be blocked by the stopper 450 to strengthen the ability to prevent the reel 300 from reversing. The driving teeth 460 can be disposed at the lower end of the detent ring 410 to be adjacent to the reel 300.

[0115] The fastening device 100 may further include a transmission assembly 700 coupled to the driving teeth 460 of the detent unit 400 and the wire drum 300. Specifically, the transmission assembly 700 may include a sun gear 710, a plurality of planetary gears 730, and a disk body 720. The sun gear 710 is driven by the driving teeth 460 of the detent unit 400. Each planetary gear 730 is pivotally disposed on each pivot on the wire drum 300 and meshes with the sun gear 710 and the inner teeth 260 of the housing unit 200. The disk body 720 is placed on each planetary gear 730 and covers each planetary gear 730.

[0116] like Figure 2 As shown, the detent unit 400 may further include a boss 420 and at least one engaging portion 440. The boss 420 is integrally connected to the detent ring 410 along the axis I1. The at least one engaging portion 440 is disposed on the boss 420. In the first embodiment, the number of the engaging portions 440 may be three, and each engaging portion 440 is a radial groove structure, but this is not limited to this.

[0117] The torque unit 800 may include a torque ring body 820, at least one embedding portion 830 and at least one torque portion 810. The number of the embedding portions 830 may be three, and the three embedding portions 830 are spaced apart at the inner edge of the torque ring body 820. Each embedding portion 830 may be embedded in each embedding portion 440, and the embedding portion 830 may be a convex block structure that protrudes radially inward. The embedding portion 830 may be radially misaligned with the torque portion 810. The number of the torque portion 810 may also be three and spaced apart at the outer edge of the torque ring body 820. Preferably, the torque portion 810 is located between two adjacent embedding portions 830, and the torque portion 810 is an angular convex block structure and may include a force-bearing inclined surface 811 (marked at Figure 6 ), which can increase the stability of the structure.

[0118] During assembly, the torque unit 800 can be sleeved on the boss 420 of the detent unit 400. At this time, the locking portion 830 of the convex structure can cooperate with the locking portion 440 of the groove structure to limit the rotation of the torque unit 800 and the detent unit 400, but the combination of the two is not limited to this. In addition, after the torque unit 800 and the detent unit 400 are assembled, at least a portion of the torque unit 800 can have a gap with the boss 420 to generate a deformation space S1 (indicated at Figure 6 ), so that when a force applied to the torsion unit 800 exceeds a threshold value, at least a portion of the torsion unit 800 deforms radially inward. That is, by making the boss 420 into a triangular shape and the torsion ring body 820 into a circular ring shape, and allowing the fitting portion 440 to be located at the three corners of the triangle to cooperate with the assembly of the embedded clamping portion 830, a gap will be generated between the three sides of the boss 420 and the inner edge of the circular ring to form three deformation spaces S1, and the portion of the circular ring corresponding to each side of the triangle is the portion of the torsion unit 800 that can deform radially inward. Therefore, by allowing this portion to include the embedded clamping portion 830, and in particular allowing the circular ring to include the embedded clamping portion 830 at the position corresponding to the center of each side of the triangle, the torsion portion 810 can be pushed and deformed when subjected to force.

[0119] The knob 500 may be a cover-shaped structure. The knob 500 may be selectively coupled to the torque unit 800 and include at least one push portion 510 corresponding to the at least one torque unit 810. The number of the push portions 510 may be three. The knob 500 may further include a top groove 520 for accommodating the torque unit 800. The three push portions 510 may be spaced and convexly disposed on the side groove surface of the top groove 520, so that each push portion 510 may correspond to each torque unit 810. Therefore, the push portion 510 may include a push inclined surface 511 (shown in FIG. Figure 6 ) corresponds to the force-bearing inclined surface 811 of the torque portion 810, so that the pushing portion 510 pushes against the torque portion 810, thereby driving the braking unit 400 to rotate in the tightening direction A1.

[0120] See also Figure 4 , Figure 5 and Figure 6 , and please also refer to Figure 2 and Figure 3 ,in Figure 4 Draw Figure 1 A side cross-sectional schematic diagram of the fastening device 100 of the first embodiment, Figure 5 Draw Figure 1 Another side cross-sectional schematic diagram of the fastening device 100 of the first embodiment, Figure 6 Draw Figure 4A schematic top view of the fastening device 100 of the first embodiment along the section line 6-6. The fastening device 100 may further include a connection unit, one end of which is connected to the knob 500, and the other end is coupled to the wire drum 300. Specifically, the connection unit may include a positioning rod 600 and a screw rod, and the positioning rod 600 may include a positioning protrusion 610. The positioning rod 600 may penetrate the wire drum 300 and the sun gear 710 from bottom to top and then enter the central protrusion of the knob 500, and the screw rod then penetrates the central protrusion downward to lock the positioning rod 600. In this way, the positioning rod 600 can be linked with the knob 500 on the axis I1.

[0121] like Figure 4 and Figure 6 As shown, at this time, the knob 500 is not pulled up, and the detent unit 400 is located at a first position. The push inclined surface 511 of the push portion 510 of the knob 500 corresponds to the force-bearing inclined surface 811 of the torque portion 810 of the torque unit 800, the driving tooth 460 of the detent unit 400 is meshed with the sun gear 710, and the ratchet arm 430 corresponds to the bite tooth 240. When the user holds the knob 500 and rotates the knob 500 in the tightening direction A1, the push portion 510 can push the torque portion 810 to transmit the rotational force of the knob 500 to the detent unit 400, and the distal end of the ratchet arm 430 can continuously disengage from the bite tooth 240, so that the detent unit 400 can drive the cable drum 300 to rotate in the tightening direction A1 through the transmission group 700 to tighten the cable.

[0122] When the tie line is tightened to a certain extent, the cable drum 300 will be pulled by the tension of the cable drum to rotate in a release direction A2, so the torque part 810 will push against the push part 510 in the release direction A2 to prevent it from being pushed by the push part 510 of the knob 500. In this way, when the force applied to the torque part 810 exceeds the threshold, the force-bearing inclined surface 811 slides relative to the push part 511, and the force-bearing inclined surface 811 deforms inward to make the push part 510 of the knob 500 jump off the torque part 810, and the knob 500 rotates idly, and can no longer drive the cable drum 300 to tighten the cable line in the tightening direction A1. When the user stops applying force, the distal end of the ratchet arm 430 engages with the bite teeth 240 to prevent the cable drum 300 from rotating in the release direction A2, and the cable line cannot be released at this time.

[0123] like Figure 5 As shown, the tether line can be released by pulling up the knob 500. After the knob 500 is pulled up, the knob 500 and the positioning rod 600 are displaced along the axis I1, and the positioning protrusion 610 of the positioning rod 600 can be moved from below the protrusion of the flexible clamping portion 330 to above the protrusion, and the positioning rod 600 drives the detent unit 400 to rise along the axis I1 to switch from the first position to a second position. At this time, the ratchet arm 430 of the detent unit 400 is disengaged from the engaging tooth 240, and the detent unit 400 does not prevent the cable drum 300 from rotating in the release direction A2, and the tether line can be released.

[0124] See also Figure 7 , Figure 8 and Fig. 9 ,in Figure 7 FIG. 1 is a perspective view of a fastening device 100a according to a second embodiment of the present invention. Figure 8 Draw Figure 7 An exploded schematic diagram of the fastening device 100a of the second embodiment, Fig. 9 Draw Figure 7 Another exploded schematic diagram of the fastening device 100a of the second embodiment. The structure of the fastening device 100a of the second embodiment is similar to that of the fastening device 100 of the first embodiment, and includes a knob 500a, a torque unit 800a, a detent unit 400a, a transmission group 700a, a wire drum 300a and a housing unit 200a. Only the differences are described below, and the same or similar parts are not repeated.

[0125] The torque unit 800a may include a torque ring body 820a, three torque parts 810a and three embedded clamping parts 830a. The three embedded clamping parts 830a may be disposed at an upper edge of the torque ring body 820a and embedded in the knob 500a, so that the torque unit 800a and the knob 500a are rotationally limited. The three torque parts 810a may be located at an inner edge of the torque ring body 820a. The detent unit 400a may further include three force-bearing parts 470a corresponding to the three torque parts 810a. When a force received by each torque part 810a exceeds a threshold value, each torque part 810a is deformed to move from one side of each force-bearing part 470a to the other side of each force-bearing part 470a. Please note that the number of force-bearing parts 470a is matched with the number of torque parts 810a, so in other embodiments, when the number of torque parts is at least one, the number of force-bearing parts is also at least one.

[0126] Specifically, the knob 500a may include three engaging holes 530a spaced apart on an inner top surface of the knob 500a, and each engaging hole 530a is for each embedded engaging portion 830a to be inserted into, so that the torque unit 800a and the knob 500a are combined and rotated to limit position.

[0127] The boss 420a of the detent unit 400a may also be roughly annular, and the force-bearing portion 470a may radially protrude from the outer edge of the boss 420a, so that when the detent unit 400a is assembled with the torque unit 800a, the force-bearing portion 470a may contact the torque portion 810a.

[0128] See also Fig.10 , Fig.11 and Fig.12 ,in Fig.10 Draw Figure 7 A side cross-sectional schematic diagram of a fastening device 100a according to a second embodiment, Fig.11 Draw Figure 7 Another side cross-sectional schematic diagram of the fastening device 100a of the second embodiment, Fig.12 Draw Fig.10 A schematic top view of the fastening device 100a of the second embodiment along the cut line 12-12. Fig.10 and Fig.12 As shown, when the knob 500a is not pulled up and the actuator unit 400a is in the first position, the user holds the knob 500a and rotates the knob 500a in the tightening direction A1, which can simultaneously drive the torque unit 800a to rotate, and make the torque part 810a push the force-bearing part 470a to transmit the rotational force of the knob 500a to the actuator unit 400a, so as to drive the wire drum 300a to rotate in the tightening direction A1 to tighten the wire.

[0129] When the tie line is tightened to a certain degree, the wire drum 300a will be pulled by the tie line tension to rotate in the release direction A2, so the force-bearing portion 470a will push the torque portion 810a in the release direction A2. In this way, when the force applied to the torque portion 810a exceeds the threshold value, the torque portion 810a will be pushed to deform radially outward, and the knob 500a will drive the torque unit 800a to idle relative to the braking unit 400a, and will no longer be able to drive the wire drum 300a to tighten the tie line in the tightening direction A1. It should be particularly noted that there is a gap between the outer edge of the torque ring body 820a and the inner annular surface of the knob 500a, which allows the torque ring body 820a to deform radially outward. Fig.11 As shown, the tie line can be released by pulling up the knob 500a, and the details are not repeated here.

[0130] See also Fig.13 , Fig.14 and Fig.15 ,in Fig.13 FIG. 1 is a three-dimensional schematic diagram of a fastening device 100 b according to a third embodiment of the present invention. Fig.14 Draw Fig.13 An exploded schematic diagram of the fastening device 100b of the third embodiment, Fig.15 Draw Fig.13 Another exploded schematic diagram of the fastening device 100b of the third embodiment. The structure of the fastening device 100b of the third embodiment is similar to that of the fastening device 100 of the first embodiment, and includes a knob 500b, a torque unit 800b, a detent unit 400b, a transmission group 700b, a wire drum 300b and a housing unit 200b. Only the differences are described below, and the same or similar parts are not repeated.

[0131] The torque unit 800b is rotationally linked with the detent unit 400b. The torque unit 800b includes a torque ring body 820b and three torque parts 810b. The torque part 810b extends along the circumference of the torque unit 800b, especially along the circumference of the torque ring body 820b. The knob 500b includes three push parts 510b that push against the three torque parts 810b, especially push against a distal end of each torque part 810b, so as to push the cable drum 300b to rotate in the tightening direction A1. When the force applied to each torque part 810b exceeds a threshold value, a friction force between a friction surface 812b of each torque part 810b and the housing unit 200b prevents the knob 500b from driving the cable drum 300b.

[0132] Specifically, the torque unit 800b includes three connecting parts (not shown), which are connected to the outer edge of the torque ring body 820b at intervals and protrude radially outward, and each torque part 810b extends from a side surface of each connecting part in an integral manner toward the circumferential direction, and each distal end includes an end plane 813b (marked at Fig.18 Each push portion 510b of the knob 500b may include a push side surface 512b (indicated at Fig.18 ) abuts against each end plane 813b, and when the knob 500b is rotated in the tightening direction A1, the torque portion 810b is pushed to drive the torque unit 800b to rotate in the tightening direction A1.

[0133] The torque unit 800b may further include three engaging grooves 840b, which are recessed in the torque ring body 820b. The detent unit 400b may include three engaging protrusions 480b, each engaging protrusion 480b is engaged in each engaging groove 840b, so that the torque unit 800b and the detent unit 400b can be rotationally limited.

[0134] The annular wall 210b of the housing unit 200b may include an upper portion 211b, which is located above the engaging teeth 240b and is a smooth surface. After the torsion unit 800b is assembled, the friction surface 812b of the torsion portion 810b may face the upper portion 211b.

[0135] See also Fig.16 , Fig.17 and Fig.18 ,in Fig.16 Draw Fig.13 A side cross-sectional schematic diagram of a fastening device 100b of the third embodiment, Fig.17 Draw Fig.13 Another side cross-sectional schematic diagram of the fastening device 100b of the third embodiment, Fig.18 Draw Fig.16 The schematic top view of the fastening device 100b of the third embodiment along the cutting line 18-18 is shown. Fig.16 and Fig.18As shown, when the knob 500b is not pulled up and the detent unit 400b is in the first position, the user holds the knob 500b and rotates the knob 500b in the tightening direction A1, and the push portion 510b can push the torque portion 810b to rotate the torque unit 800b, so as to transmit the rotational force of the knob 500b to the detent unit 400b, thereby driving the wire drum 300b to rotate in the tightening direction A1 to tighten the wire.

[0136] When the tie line is tightened to a certain extent, the wire drum 300b will be pulled by the tie line tension to rotate in the release direction A2, which in turn makes it difficult for the brake unit 400b to be pushed in the tightening direction A1. Therefore, when the pushing portion 510b pushes against the torque portion 810b, the torque portion 810b will bend, causing the friction surface 812b to contact the upper portion 211b of the annular wall 210b, generating friction. When the force applied to the torque portion 810b exceeds the threshold, the bending amplitude of the torque portion 810b increases, the contact area between the friction surface 812b and the upper portion 211b increases, and the friction increases. Therefore, the knob 500b can no longer push the torque unit 800b to rotate in the tightening direction A1, and can no longer drive the wire drum 300b to tighten the tie line in the tightening direction A1. In addition, if Fig.17 As shown, the tie line can be released by pulling up the knob 500b, and the details are not repeated here.

[0137] See also Fig.19 , Fig. 20 and Fig.21 ,in Fig.19 FIG. 1 is a three-dimensional schematic diagram of a fastening device 100c according to a fourth embodiment of the present invention. Fig. 20 Draw Fig.19 An exploded schematic diagram of the fastening device 100c of the fourth embodiment, Fig.21 Draw Fig.19 Another exploded schematic diagram of the fastening device 100c of the fourth embodiment. The structure of the fastening device 100c of the third embodiment is similar to the structure of the fastening device 100b of the third embodiment, and includes a knob 500c, a torque unit 800c, a detent unit 400c, a transmission group 700c, a wire drum 300c and a housing unit 200c. Only the differences are described below, and the same or similar parts are not repeated.

[0138] The torque unit 800c can be rotatably linked with the detent unit 400c. The torque unit 800c includes a torque ring body 820c and three torque parts 810c. The torque part 810c extends along the circumference of the torque unit 800c, especially along the circumference of the torque ring body 820c. Each torque part 810c can include a torque tooth 814c. The knob 500c includes three push parts 510c that push against the three torque parts 810c respectively to push the cable drum 300c to rotate in the tightening direction A1. The housing unit 200c can include a plurality of recesses 270c. When the force applied to each torque part 810c exceeds a threshold value, each torque part 810c bends so that the torque tooth 814c engages with one of the plurality of recesses 270c to prevent the knob 500c from driving the cable drum 300c.

[0139] Specifically, the annular wall 210c of the housing unit 200c may include an upper portion 211c, the upper portion 211c is located above the engaging teeth 240c, and the recess 270c may be located at the upper portion 211c. The torque tooth 814c has an external tooth structure and is adjacent to the distal end of the torque portion 810c. After the torque unit 800c is assembled, the torque tooth 814c may face the recess 270c.

[0140] See also Fig. 22 , Fig.23 and Fig.24 ,in Fig. 22 Draw Fig.19 A side cross-sectional schematic diagram of a fastening device 100c according to a fourth embodiment, Fig.23 Draw Fig.19 Another side cross-sectional schematic diagram of the fastening device 100c of the fourth embodiment, Fig.24 Draw Fig. 22 The schematic top view of the fastening device 100c of the fourth embodiment along the cutting line 24-24 is shown. Fig. 22 and Fig.24 As shown, when the knob 500c is not pulled up and the detent unit 400c is in the first position, the user holds the knob 500c and rotates the knob 500c in the tightening direction A1. At this time, the torque tooth 814c has not yet engaged with the recess 270c, and the push portion 510c can push the torque portion 810c to rotate the torque unit 800c, so as to transmit the rotational force of the knob 500c to the detent unit 400c, thereby driving the wire reel 300c to rotate in the tightening direction A1 to tighten the wire.

[0141] When the tie line is tightened to a certain extent, the cable drum 300c will be pulled by the cable tension to rotate in the release direction A2, which in turn makes it difficult for the brake unit 400c to be pushed in the tightening direction A1. Therefore, when the push portion 510c pushes against the torque portion 810c, the torque portion 810c will bend, causing the torque teeth 814c to begin to engage with the recess 270c. When the force applied to the torque portion 810b exceeds the threshold, the bending amplitude of the torque portion 810b increases, and the torque teeth 814c completely engage with the recess 270c. Therefore, the knob 500c can no longer push the torque unit 800c to rotate in the tightening direction A1, and can no longer drive the cable drum 300c to tighten the tie line in the tightening direction A1. In addition, if Fig.23 As shown, the tie line can be released by pulling up the knob 500c, and the details are not repeated here.

[0142] See also Fig.25 , Fig.26 and Fig. 27 ,in Fig.25 FIG. 1 is a perspective view of a fastening device 100d according to a fifth embodiment of the present invention. Fig.26 Draw Fig.25 An exploded schematic diagram of the fastening device 100d of the fifth embodiment, Fig. 27 Draw Fig.25 Another exploded schematic diagram of the fastening device 100d of the fifth embodiment. The structure of the fastening device 100d of the fifth embodiment is similar to that of the fastening device 100b of the third embodiment, and includes a knob 500d, a detent unit 400d, a transmission assembly 700d, a wire drum 300d and a housing unit 200d, and the detent unit 400d includes at least one ratchet arm 430d. Only the differences are described below, and the same or similar parts are not repeated.

[0143] The fastening device 100d may include at least one torque portion 490d, and the at least one torque portion 490d is rotatably linked with the at least one ratchet arm 430d. Specifically, the number of the at least one torque portion 490d and the at least one ratchet arm 430d is three. The fastening device 100d may further include a detent unit 400d, and the detent unit 400d may include a detent ring body 410d, the three ratchet arms 430d and the three torque portions 490d, and the three torque portions 490d and the three ratchet arms 430d are spaced apart and arranged on the detent ring body 410d. That is, in the fifth embodiment, a separate torque ring body is not included to arrange the torque portion 490d, but the torque portion 490d is arranged on the detent ring body 410d. When the detent ring body 410d is located in the upper chamber, the torque portion 490d may contact the spacing portion 230d and generate a friction force.

[0144] See also Fig.28 and Fig.29 ,in Fig.28 Draw Fig.25A side cross-sectional schematic diagram of a fastening device 100d according to a fifth embodiment, Fig.29 Draw Fig.25 Another side cross-sectional schematic diagram of the fastening device 100d of the fifth embodiment. Fig.28 As shown, when the knob 500d is not pulled up and the actuator unit 400d is in the first position, the user holds the knob 500d and turns the knob 500d in the tightening direction A1. When the line tension is small, the friction between the torque portion 490d and the spacer portion 230d is also small, and does not affect the rotation of the cable drum 300d. When the force applied to the torque portion 490d exceeds the threshold, the bending amplitude of the torque portion 490d is large, which increases the friction between the torque portion 490d and the spacer portion 230d. The knob 500d can no longer push the actuator unit 400d to rotate in the tightening direction A1, and can no longer drive the cable drum 300d to tighten the line in the tightening direction A1, thereby avoiding excessive tightening of the line. In addition, as shown in FIG. Fig.29 As shown, the tie line can be released by pulling up the knob 500d, and the details are not repeated here.

[0145] As can be seen from the above embodiments, through the configuration of the torque portion of the present invention, when the tension of the line is too large, the knob can be allowed to idle relative to the cable drum in the tightening direction, or the knob can be prevented from rotating in the tightening direction, and both can achieve the purpose of preventing the cable drum from rotating in the tightening direction. In addition, the torque portion can be arranged in an independent torque ring body to form an independent torque unit, or it can be arranged in a braking ring body without including an independent torque unit, as long as the purpose of preventing the cable drum from rotating in the tightening direction when the tension of the line is too large can be achieved. In addition, the torque portion can generate friction with any part of the housing unit or the knob to prevent the knob from rotating, which is not limited to the above disclosure.

[0146] Although the present invention has been disclosed as above by way of embodiments, it is not intended to limit the present invention. Anyone familiar with the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the attached claims.

Claims

1. A fastening device, characterized in that: Include: A housing unit comprising a containing space; A wire reel is accommodated in the accommodation space and is used for winding a series of wires; A driving unit is located on the wire drum along an axis; a torsion unit, located on the actuating unit along the axis and comprising at least one torsion portion; and A knob, covered on the housing unit; The knob is rotated in a tightening direction so that the torque unit links the braking unit to allow the knob to drive the cable drum to rotate in the tightening direction and tighten the tie line; when a force applied to the at least one torque part exceeds a threshold, the cable drum cannot rotate in the tightening direction.

2. The fastening device according to claim 1, characterized in that The detent unit includes at least one embedding portion, and the torque unit further includes at least one embedding portion correspondingly embedded in the at least one embedding portion, and the at least one embedding portion and the at least one torque portion are offset in a radial direction.

3. The fastening device according to claim 2, characterized in that: The torque unit comprises a torque ring body, the at least one embedding portion is arranged at an inner edge of the torque ring body, and the at least one torque portion is located at an outer edge of the torque ring body.

4. The fastening device according to claim 3, characterized in that: The detent unit includes a detent ring body and a boss, the boss is integrally connected to the detent ring body along the axis, the at least one engaging portion is arranged on the boss, and at least one deformation space is formed between the inner edge of the torque ring body and at least one side edge of the boss to allow the at least one torque portion to deform inward along the radial direction.

5. The fastening device according to claim 3, characterized in that: The knob includes at least one push portion corresponding to the at least one torque portion. When the force applied to the at least one torque portion exceeds the threshold, the at least one torque portion is deformed to allow the at least one push portion to move from one side of the at least one torque portion to the other side of the at least one torque portion.

6. The fastening device according to claim 5, characterized in that The at least one torque portion includes a force-bearing inclined surface, and the at least one push portion includes a push inclined surface facing the force-bearing inclined surface of the at least one torque portion.

7. The fastening device according to claim 3, characterized in that: The torque unit comprises a torque ring body, the at least one embedding portion is arranged on an upper edge of the torque ring body, and the at least one torque portion is located on an inner edge of the torque ring body.

8. The fastening device according to claim 3, characterized in that: The braking unit further includes at least one force-bearing portion corresponding to the at least one torsion portion. When the force applied to the at least one torsion portion exceeds the threshold, the at least one torsion portion deforms to move from one side of the at least one force-bearing portion to the other side of the at least one force-bearing portion.

9. The fastening device according to claim 1, characterized in that: The torque unit is rotationally linked with the braking unit, the at least one torque part extends along the circumference of the torque unit, and the knob includes at least one pushing part that pushes against a distal end of the at least one torque part to push the wire drum to rotate in the tightening direction; when the force applied to the at least one torque part exceeds the threshold, a friction force between a friction surface of the at least one torque part and an inner wall of the outer shell unit prevents the knob from driving the wire drum.

10. The fastening device according to claim 1, characterized in that The torque unit is rotationally linked with the braking unit, the at least one torque portion extends along a circumferential direction of the torque unit and includes a torque tooth, the knob includes at least one pushing portion to push the at least one torque portion to push the wire drum to rotate in the tightening direction; the shell unit includes a plurality of recesses, when the force applied to the at least one torque portion exceeds the threshold value, the at least one torque portion bends so that the torque tooth engages with one of the plurality of recesses to prevent the knob from driving the wire drum.

11. A fastening device, characterized in that: Include: A housing unit comprising a containing space and a plurality of engaging teeth; A wire reel is accommodated in the accommodation space and is used for winding a series of wires; A knob, covered on the housing unit; At least one ratchet arm is accommodated in the accommodation space and corresponds to at least one engaging tooth; and At least one torque portion is accommodated in the accommodation space and is rotationally linked with one of the knob and the ratchet arm; The knob is rotated in a tightening direction, and the knob drives the at least one ratchet arm to rotate, allowing the wire drum to rotate in the tightening direction and tighten the tie line; when the tension of the tie line is too tight, the at least one torque part prevents the wire drum from rotating in the tightening direction.

12. The fastening device according to claim 11, characterized in that It also includes a connecting unit, one end of which is connected to the knob, and the other end of which is coupled to the wire drum.

13. The fastening device according to claim 12, characterized in that The connection unit includes a positioning rod, and the cable drum includes a flexible clamping portion coupled to the positioning rod.

14. The fastening device according to claim 11, characterized in that The invention also comprises a torsion ring body and at least one embedding portion, wherein the at least one embedding portion and the at least one torsion portion are arranged at intervals on the torsion ring body.

15. The fastening device according to claim 14, characterized in that It also includes a braking ring body, a boss and at least one engaging portion, wherein the at least one engaging portion is arranged on an inner edge of the torque ring body, the at least one torque portion is located at an outer edge of the torque ring body, the at least one ratchet arm is arranged on the braking ring body, the boss is integrally connected to the braking ring body along an axis, the at least one engaging portion is arranged on the boss and corresponds to the at least one engaging portion, so that the at least one torque portion and the at least one ratchet arm are rotated in conjunction, and at least one deformation space is formed between the inner edge of the torque ring body and at least one side edge of the boss, so that the at least one torque portion can deform inward along a radial direction.

16. The fastening device according to claim 14, characterized in that The knob includes at least one push portion corresponding to the at least one torque portion. When a force applied to the at least one torque portion exceeds a threshold, the at least one torque portion deforms to allow the at least one push portion to move from one side of the at least one torque portion to the other side of the at least one torque portion.

17. The fastening device according to claim 14, characterized in that It also includes a braking ring body and at least one force-bearing part, the at least one force-bearing part is arranged on the braking ring body and corresponds to the at least one torque part, the at least one embedding part is arranged on an upper edge of the torque ring body and is embedded in the knob to limit the rotation of the torque ring body and the knob, the at least one torque part is located at an inner edge of the torque ring body, when the force applied to the at least one torque part exceeds a threshold value, the at least one torque part is deformed to move from one side of the at least one force-bearing part to the other side of the at least one force-bearing part.

18. The fastening device according to claim 11, characterized in that The at least one torque portion is rotationally linked with the at least one ratchet arm, and the knob includes at least one pushing portion that pushes against the at least one torque portion to push the wire drum to rotate in the tightening direction; when a force applied to the at least one torque portion exceeds a threshold value, a friction force between a friction surface of the at least one torque portion and the outer shell unit prevents the knob from driving the wire drum.

19. The fastening device according to claim 11, characterized in that The at least one torque portion is rotationally linked with the at least one ratchet arm, the at least one torque portion includes a torque tooth, and the knob includes at least one pushing portion to push the at least one torque portion to push the wire drum to rotate in the tightening direction; the housing unit includes a plurality of recesses, and when a force applied to the at least one torque portion exceeds a threshold value, the at least one torque portion bends so that the torque tooth engages with one of the plurality of recesses to prevent the knob from driving the wire drum.

20. The fastening device according to claim 11, characterized in that It also includes a braking ring body, and the at least one torque part and the at least one ratchet arm are spaced apart from each other on the braking ring body. The housing unit also includes an annular wall and a partition part, and the partition part protrudes inward from the annular wall to divide the accommodating space into an upper accommodating chamber and a lower accommodating chamber. The multiple engaging teeth are located on the annular wall and in the upper accommodating chamber, and the at least one torque part is used to contact the partition part and generate a friction force.

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