Fastening system

Abstract

To provide a fastening system having a structure for pulling a gear rack.SOLUTION: The fastening system of the present disclosure includes a securing member, a securing device, and a lace. The fixing member includes a main frame and at least one guiding portion. The fixing device is disposed on the main frame and includes at least one gear rack having an inner end and an outer end, a gear engaged with the inner end of the gear rack, a knob connected to the gear, and an engaging unit. The lace passes through the main frame and the guide portion, and one end of the lace is connected to the outer end portion. When the force causes the knob to rotate in the tensioning direction, the gear rotates and drives the gear rack, and the race pulls the guide toward the main frame. When the force is released, the engagement unit prevents rotation of the gear in the release direction and fixes the position of the gear rack.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to fastening systems, and more particularly to fastening systems having gear rack pulling structures. [Background technology]

[0002] In order to accommodate the needs of many users, the size of an article may be adjustable. For example, the loop belt (fixing member) of a bicycle helmet is provided with a fixing device so that the size can be adjusted to fit the user's head circumference.

[0003] However, conventional fixing devices have a complex structure and are unstable, and the left and right balance may be lost after adjusting the circular belt, so improvements in these areas are needed. DISCLOSURE OF THE INVENTION

[0004] According to one aspect of the present disclosure, a fastening system includes a fixing member, a fixing device, and a lace. The fixing member is disposed on a fixing object and includes a main frame and at least one guide member, the at least one guide member being independent of the main frame. The fixing device is disposed on the main frame and includes at least one gear rack enclosed by the main frame and having an inner end and an outer end, a gear engaging with the inner end of the at least one gear rack, a knob operably coupled to the gear, and an engagement unit disposed between the gear and the knob. The lace passes through the main frame and the at least one guide member, and one end of the lace is connected to the outer end of the at least one gear rack. When a force is applied to rotate the knob in a tension direction, the gear rotates and drives the at least one gear rack, and the lace pulls the at least one guide member toward the main frame. When the force is released, the engagement unit prevents the gear from rotating in a release direction, fixing the position of the at least one gear rack.

[0005] According to another aspect of the present disclosure, a fastening system includes a fixing member, a fixing device, and a race. The fixing member is disposed on a fixing object and includes a main frame and at least one guide member, with a distance between the main frame and the guide member. The fixing device is disposed on the main frame and includes at least one gear rack having an inner end and an outer end, a gear engaging with the inner end of the at least one gear rack, a knob operably connected to the gear, an engagement unit disposed between the gear and the knob and including a resilient pawl, and a housing accommodating the engagement unit and engaging with the knob. The housing includes a plurality of housing teeth surrounding the engagement unit, and the resilient pawl selectively engages with the housing teeth. The race passes through the main frame and the at least one guide member, and one end of the race is connected to the outer end of the at least one gear rack. When the knob is rotated in the tension direction by a force, the resilient pawl separates from the housing teeth, allowing the gear to drive the at least one gear rack, and the race pulls the at least one guide member toward the main frame. When the force is released, the resilient pawl engages the at least one housing tooth, preventing rotation of the gear in the release direction and fixing the position of the at least one gear rack.

[0006] According to yet another aspect of the present disclosure, a fastening system includes a fixing member, a fixing device, and a race. The fixing member is disposed on an object to be fixed and includes a main frame and at least one guide member, with a distance between the guide member and the main frame. The fixing device is disposed on the main frame and includes at least one gear rack having a plurality of protruding teeth, a drive wheel having a plurality of drive pins corresponding to the protruding teeth, a knob operably connected to the drive wheel, and an engagement unit disposed between the drive wheel and the knob. Each of the protruding teeth includes a plurality of edge curves, each edge curve being selected from a logarithmic spiral curve, an Archimedes spiral curve, a Pascal's Limacon curve, an elliptic curve, a high-order curve, a bond curve, or a combination thereof. The race passes through the main frame and the at least one guide member, and one end of the race is connected to the at least one gear rack. When the knob is rotated in the tension direction by a force, the drive wheel rotates to drive the at least one gear rack, and the race pulls the at least one guide member toward the main frame. When the force is released, the engagement unit prevents rotation of the drive wheel in the release direction and fixes the position of the at least one gear rack. [Brief explanation of the drawings]

[0007] The present disclosure may be more fully understood from the detailed description of the embodiments, when read in conjunction with the following drawings, in which: [Figure 1] FIG. 1 is a schematic three-dimensional view of a fastening system according to a first embodiment of the present disclosure. [Figure 2] FIG. 2 is a partial schematic three-dimensional view of the fastening system according to the first embodiment of FIG. [Figure 3] FIG. 3 is an exploded view of the fastening device and the race of the fastening system according to the first embodiment of FIG. [Figure 4] FIG. 4 is another exploded view of the fastening device and race according to the first embodiment of FIG. [Figure 5] FIG. 5 is a cross-sectional view of the first embodiment of the fixation device of FIG. 1 taken along line 5-5. [Figure 6]FIG. 6 is a cross-sectional view of the first embodiment of the fixation device of FIG. 1 taken along line 6-6. [Figure 7] FIG. 7 is a schematic three-dimensional view of a fastening system according to a second embodiment of the present disclosure. [Figure 8] FIG. 8 is a schematic three-dimensional view of a fastening system according to a third embodiment of the present disclosure. [Figure 9] FIG. 9 is a partial exploded view of a fastening system according to a fourth embodiment of the present disclosure. [Figure 10] FIG. 10 is another partially exploded view of the fastening system according to the fourth embodiment of FIG. [Figure 11] FIG. 11 is a partial cross-sectional view of the fastening system according to the fourth embodiment of FIG. [Figure 12] FIG. 12 is another partial cross-sectional view of the fastening system according to the fourth embodiment of FIG. [Figure 13] FIG. 13 is an exploded view of a fixing device of a fastening system according to a fifth embodiment of the present disclosure. [Figure 14] FIG. 14 is another exploded view of the fifth embodiment of the fixation device of FIG. [Figure 15] FIG. 15 is a partial cross-sectional view of the fifth embodiment of the fixation device of FIG. [Figure 16] 16 is another partial cross-sectional view of the fifth embodiment of the fixation device of FIG. 13. FIG. [Figure 17] FIG. 17 is an example of an exploded view of a fixing device of a fastening system according to a sixth embodiment of the present disclosure. [Figure 18] FIG. 18 is another exploded view of the sixth embodiment of the fixation device of FIG. [Figure 19] FIG. 19 is a cross-sectional view of the fixation device according to the sixth embodiment of FIG. [Figure 20] FIG. 20 is a partial top view of the fixation device according to the sixth embodiment of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] In this specification, when an element (feature or module) is described as being "disposed on," "connected," or "coupled," it is understood that the element may be directly disposed, connected, or coupled to other elements, or intermediate elements may be present. In contrast, when an element is described as being "directly disposed on," "directly connected," or "directly coupled," there are no intermediate elements present.

[0009] Additionally, terms such as "first," "second," and "third" are used to describe various elements or components and should not be considered limiting. Thus, a first element or component described below may be referred to as a second element or component.

[0010] Fig. 1 is a three-dimensional schematic view of a fastening system 1000 according to a first embodiment of the present invention. Fig. 2 is a partial three-dimensional schematic view of the fastening system 1000 according to the first embodiment of Fig. 1. Fig. 3 is an exploded view of a fastening device 1200 and a race 1300 of the fastening system 1000 according to the first embodiment of Fig. 1. The fastening system 1000 includes a fastening member 1100, a fastening device 1200, and a race 1300.

[0011] The fixing member 1100 is disposed on a fixed object and includes a main frame 1110 and at least one guide portion 1130, where the at least one guide portion 1130 does not directly contact the main frame 1110. The fixing device 1200 is disposed on the main frame 1110 and includes at least one gear rack 1210 (two gear racks 1210 are included in the first embodiment) having an inner end (not numbered) and an outer end (not numbered), a gear 1220 engaging with the inner ends facing each other, a knob 1240 operably connected to the gear 1220, and an engagement unit 1230 disposed between the gear 1220 and the knob 1240. A race 1300 passes through the main frame 1110 and the at least one guide portion 1130, and two ends 1310, 1320 of the race 1300 are connected to the outer ends of the two gear racks 1210, respectively. When the knob 1240 is rotated by the force in the tension direction R1 shown in Figure 6, the gear 1220 rotates and drives the two gear racks 1210 toward each other, and the race 1300 pulls at least one guide portion 1130 toward the main frame 1110. When the force is released, the engagement unit 1230 prevents the gear 1220 from rotating in the release direction R2 shown in Figure 6, fixing the relative positions of the two gear racks 1210.

[0012] Therefore, by rotating the knob 1240 and stably rotating the gear 1220 to move the gear rack 1210, the race 1300 is pulled, thereby moving the guide unit 1130. Because the race 1300 is connected to the two gear racks 1210 and passes through the guide unit 1130, the guide unit 1130 can move closer to the main frame 1110 in a balanced manner, thereby preventing left-right imbalance.

[0013] The number of at least one guide portion 1130 may be two or more, and the guide portions 1130 may be divided into two groups. One group is located on the left side of the main frame 1110 with a distance between them. The other group is located on the right side of the main frame 1110 with a distance between them. As shown in FIGS. 1 and 2, there are eight guide portions 1130. The guide portions 1130 are equally divided into two groups independent of the main frame 1110. The fixing member 1100 may further include a subframe 1120, which has four guide portions 1130 located at one end and four guide portions 1130 located at the other end. The guide portions 1130 located on the same side may be curved to reduce friction generated when the race 1300 slides. In other embodiments, the guide portions may be fixed at any position as required, and the guide portions may move closer to the main frame when the race is pulled, but the present disclosure is not limited thereto.

[0014] 4 is another exploded view of the fixing device 1200 and the race 1300 according to the first embodiment of FIG. 1. FIG. 5 is a cross-sectional view of the fixing device 1200 according to the first embodiment of FIG. 1 taken along line 5-5. The main frame 1110 includes a positioning plate 1111, a connecting portion 1112, and two holes 1113. The positioning plate 1111 and the connecting portion 1112 are connected to form an inverted T-shape. The two holes 1113 are respectively disposed at two ends of the positioning plate 1111. The race 1300 passes through the two holes 1113 and connects to the two guide portions 1130. The main frame 1110 may further include two gear rack grooves 1115 disposed on the positioning plate 1111. The two gear rack grooves 1115 are spaced apart from each other and configured to receive the two gear racks 1210, respectively.

[0015] More precisely, the arrangement plate 1111 may include a central portion 1111a and two wings 1111b. Each wing 1111b is a curved plate, and its two ends are connected to the upper and lower ends of the central portion 1111a, respectively. The two wings 1111b are bilaterally symmetrical. A connecting portion 1112 may connect the ends of the upper wings 1111b.

[0016] The main frame 1110 may further include a cavity 1117 and a passage 1114. The cavity 1117 is recessed into the front side of the central portion 1111a. The placement plate 1111 may further include a plurality of ribs protruding from the rear side of the central portion 1111a, thereby forming two recessed gear rack grooves 1115, which respectively communicate with the upper and lower halves of the cavity 1117. The passage 1114 is also located above the cavity 1117. The passage 1114 may be configured to allow the race 1300 to pass through. Therefore, for each gear rack 1210, when the gear rack 1210 is inserted into the gear rack groove 1115, a portion of the gear rack 1210 is positioned within the cavity 1117 and engages with the gear 1220, the gear rack 1210 is partially covered by the main frame 1110, and the race 1300 is also partially covered by the main frame 1110. The main frame 1110 may further include a back cover 1116 that mates with the central portion 1111a to protect the internal elements.

[0017] As shown in FIG. 1 , the number of holes 1113 is eight. Two of the holes 1113 are located on the left side of the central portion 1111a, two of the holes 1113 are located on the right side of the central portion 1111a, two of the holes 1113 are located at the tip of the curved plate of one wing 1111b, and the remaining two of the holes 1113 are located at the tip of the curved plate of the other wing 1111b. At least some of the holes 1113 correspond to the two gear rack grooves 1115, and at least some of the holes 1113 correspond to the passages 1114, which facilitates the passage of the race 1300 through the passages 1114 into the gear rack groove 1115 and connection to the gear rack 1210 via the holes 1113. In other embodiments, the number of holes is not limited thereto. Alternatively, there may be no holes and the race is connected to the gear rack.

[0018] Each gear rack 1210 may include a gear rack body 1211, a plurality of protruding teeth 1212, and a race connecting portion 1213. Each protruding tooth 1212 protrudes outward from the gear rack body 1211 and has an inclined-toothed or helical toothed structure. The race connecting portion 1213 is connected to the gear rack body 1211 and functions as an outer end. The race connecting portion 1213 may include two through holes (not numbered) that allow two ends 1310, 1320 of the race 1300 to be inserted and connected thereto.

[0019] The gear 1220 may be housed within the cavity 1117 and may include a plurality of rotating teeth 1221 and a plurality of connecting teeth 1222. The rotating teeth 1221 correspond to the protruding teeth 1212, and each rotating tooth 1221 may have an inclined or helical tooth structure to increase the pulling force. The connecting teeth 1222 may face toward the engaging unit 1230.

[0020] The engagement unit 1230 may include a resilient claw 1231. The fixation device 1200 may further include a plurality of housing teeth 1251 surrounding the engagement unit 1230. The resilient claw 1231 is selectively engageable with at least one of the plurality of housing teeth 1251.

[0021] More specifically, the fixation device 1200 may further include a housing 1250 that is assembled to the fixation member 1100, particularly the cavity 1117. The housing 1250 may engage with the knob 1240 and accommodate the engagement unit 1230. The housing 1250 may further include a housing wall 1252. The housing teeth 1251 are provided on the housing wall 1252 and surround the engagement unit 1230. The housing 1250 may further include a housing annular groove 1255, a partition 1253, and four lugs 1254. The housing annular groove 1255 is a recess formed in the outer surface of the housing wall 1252. The partition 1253 is connected to one end of the housing wall 1252, which is adjacent to the gear 1220. The four lugs 1254 extend from the partition 1253 in a direction opposite to the housing wall 1252. Thus, when the housing 1250 engages with the engagement groove in the cavity 1117 by the lugs 1254, the gear 1220 can be sandwiched between the partition 1253 and the inner surface of the cavity 1117. The engagement unit 1230 can be disposed within the space formed by the partition 1253 and the housing wall 1252.

[0022] FIG. 6 is a cross-sectional view of the fixing device 1200 according to the first embodiment of FIG. 1, taken along line 6-6. Referring to FIG. 6 while also referring to FIGS. 1 to 5, the engagement unit 1230 may further include an engagement disk 1232, a blocking portion 1234, a plurality of drive teeth 1235, and a plurality of recesses 1233. The elastic claw 1231 includes an arm portion (not numbered) and a toothed portion (not numbered), where the arm portion extends outward from the engagement disk 1232 in the circumferential direction, and the toothed portion is connected to the tip of the arm portion. The blocking portion 1234 protrudes outward from the engagement disk 1232 and is located below the arm portion along the axis X1. When the elastic claw 1231 is deflected radially inward, the toothed portion corresponds to the blocking portion 1234. The drive teeth 1235 protrude from the surface of the engagement disk 1232 and connect with the connecting teeth 1222. The surface from which the drive teeth 1235 protrude faces the gear 1220. The recesses 1233 are recessed into the opposite surface of the engagement disc 1232, and the recessed surface of the recesses 1233 faces the knob 1240. The number of recesses 1233 may be three, but the present disclosure is not limited thereto.

[0023] The engagement disk 1232 may be circular. There are three elastic claws 1231. For each elastic claw 1231, the base end of the elastic claw 1231 is connected to the periphery of the engagement disk 1232, and a toothed portion is integrally formed at the tip of the arm portion. There are also three blocking portions 1234. The blocking portions 1234 are fin-shaped, and their inner sides are connected to the periphery of the engagement disk 1232. The end of the toothed portion facing the blocking portion 1234 extends further outward along the axis X1 than the arm portion. Therefore, when the elastic claws 1231 are pushed and bent radially inward, the toothed portion abuts against the blocking portion 1234, preventing release and preventing the elastic claws 1231 from being damaged by force. This increases the lifespan of the fixing device 1200 and maintains the fixing capacity (tension).

[0024] The knob 1240 may include three drive tabs 1241 and three flexible tabs 1242. The three drive tabs 1241 each protrude into the recess 1233, and the flexible tabs 1242 each protrude into a gap between the resilient claw 1231 and the housing tooth 1251. When the knob 1240 rotates in the tension direction R1, the drive tabs 1241 drive the engagement unit 1230 to rotate the gear 1220 in the tension direction R1. When the knob 1240 rotates in the release direction R2, the drive tabs 1241 each move within the recess 1233, and the flexible tabs 1242 push the resilient claws 1231 radially inward to bend them, thereby separating the resilient claws 1231 from the housing tooth 1251. Therefore, the resilient claws 1231 do not hinder the rotation of the gear 1220 in the release direction R2.

[0025] 4 and 6, the three drive tabs 1241 and the three flexible tabs 1242 all protrude from the inside of the top surface of the knob 1240 toward the engagement unit 1230, and the flexible tabs 1242 are disposed outside the drive tab 1241. Each flexible tab 1242 has a triangular cross section, with its tip pointing toward the tooth-like portion. The length of the drive tab 1241 is shorter than the length of the recess 1233, so that the drive tab 1241 can move within the recess 1233. The knob 1240 may further include a knob engagement unit 1243 that protrudes inward from the inner surface of the knob 1240 and couples with the housing annular groove 1255.

[0026] In the first embodiment, the end 1310 of the race 1300 is connected to the race connection portion 1213 of one of the gear racks 1210, and the end 1320 passes through a hole 1113 on one side of the central portion 1111a and one hole 1113 in the wing 1111b, then passes through four guide portions 1130 on one side of the subframe 1120, and enters the passage 1114 through another hole 1113 in the same wing 1111b and another hole 1113 on the same side of the central portion 1111a. The end 1320 then passes through the hole 1113 on the other side of the central portion 1111a and the hole 1113 on the other wing 1111b, and then through four guide portions 1130 on the other side of the sub-frame 1120, and passes through another hole 1113 on the same wing 1111b and another hole 1113 on the same side of the central portion 1111a to be connected to the race connection portion 1213 of the other gear rack 1210. Thus, the main frame 1110, the sub-frame 1120, the guide portions 1130, and the two gear racks 1210 can be connected. The hardness of each gear rack 1210 is 50D or more. The gear rack 1210 may be made of nylon or fiber reinforced plastic (FRP). This hardness allows for greater tensile force to be generated.

[0027] The fixing member 1100 may be configured to surround a fixing object. When a user wants to adjust the fixing member 1100 to fit the size of the fixing object, the user can rotate the knob 1240 in the tension direction R1. Each drive tab 1241 presses against one side of each recess 1233, holding the elastic claws 1231 of the engagement unit 1230 disengaged from the housing teeth 1251. The gear 1220 can rotate in the tension direction R1 to move the two gear racks 1210 closer to each other, causing the race 1300 to pull the subframe 1120 toward the mainframe 1110 and reduce the diameter of the fixing member 1100. When a user wants to release the fixing member 1100, the user can rotate the knob 1240 in the release direction R2. The drive tabs 1241 move within their respective recesses 1233, and the flexible tabs 1242 push the elastic claws 1231 away from the housing teeth 1251. As a result, the elastic claw 1231 no longer prevents the gear 1220 from rotating in the release direction R2. When the user continues to rotate the knob 1240 in the release direction R2, each drive tab 1241 presses the other surface of the recess 1233, causing the gear 1220 to rotate in the release direction R2 and move the two gear racks 1210 away from each other. In the first embodiment, the upper end of the connecting portion 1112 of the fixing member 1100 and the subframe 1120 are connected to the inside of the helmet, and the fixing device 1200 allows the size of the fixing member 1100 to be adjusted to fit the user's head circumference. In other embodiments, the fixing member may be connected to another fixing object, and the present disclosure is not limited to a helmet.

[0028] 7 is a three-dimensional schematic view of a fastening system 2000 according to a second embodiment of the present disclosure. The fastening system 2000 is similar to the fastening system 1000, but the structure of the subframe 2120 is slightly different, and detailed description thereof will not be repeated.

[0029] 8 is a three-dimensional schematic diagram of a fastening system 3000 according to a third embodiment of the present disclosure. The fastening system 3000 is similar to the fastening system 1000, but does not include the subframe 1120 of the first embodiment, and instead includes two guide members 3140. Four guide portions 3130 may be provided on one guide member 3140, and another four guide portions 3130 may be provided on the other guide member 3140. The two guide members 3140 may be connected to different positions on the cap, although the present disclosure is not limited thereto.

[0030] Figure 9 is a partial exploded view of a fastening system according to a fourth embodiment of the present disclosure. Figure 10 is another partial exploded view of the fastening system according to the fourth embodiment of Figure 9. The fastening system of the fourth embodiment (no reference numerals in the fourth embodiment) is similar to the fastening system 1000 of the first embodiment, and differences will be described below, and identical or similar structures will not be repeated.

[0031] Figure 11 is a partial cross-sectional view of the fastening system according to the fourth embodiment of Figure 9. Figure 12 is another partial cross-sectional view of the fastening system according to the fourth embodiment of Figure 9. The fixing member (not numbered in the fourth embodiment) includes a positioning plate 4111. The fixing device 4200 may include two gear racks 4210, a knob 4240, an engagement unit 4230, a gear 4220, and a housing 4250 integrally connected to the positioning plate 4111. The housing annular grooves 4255 are two in number and are spaced apart along the axis X1.

[0032] The fixing device 4200 may further include a transmission wheel 4260 coupled to the knob 4240 along the direction of the axis X1 and rotationally restricted by the engagement unit 4230. The transmission wheel 4260 has a plurality of transmission teeth 4262 facing the gear 4220 for engaging with coupling teeth (not numbered in the fourth embodiment) of the gear 4220. When the knob 4240 is pulled upward along the direction of the axis X1, the transmission wheel 4260 disengages from the gear 4220.

[0033] To be precise, the transmission wheel 4260 may further include four clamp arms 4261 protruding toward the knob 4240. The knob 4240 may include a knob hole (unnumbered) and a knob engagement ring 4244. The knob hole passes through the upper end of the knob 4240. The knob engagement ring 4244 protrudes radially inward from the wall of the knob hole. The four clamp arms 4261 of the transmission wheel 4260 may engage with the knob engagement ring 4244 to connect the transmission wheel 4260 to the knob 4240.

[0034] The engagement unit 4230 does not include the drive teeth 1235 as in the first embodiment, but has a polygonal hole. The shape of the transmission wheel 4260 corresponds to the shape of the polygonal hole, and the transmission wheel 4260 is inserted into the polygonal hole of the engagement unit 4230 and is rotationally restricted relative to the engagement unit 4230. The transmission teeth 4262 of the transmission wheel 4260 protrude from the polygonal hole and engage with the coupling teeth.

[0035] As shown in FIG. 11 , the knob 4240 is in a first position, with the knob protrusion 4243 engaging one of the housing annular grooves 4255 closest to the positioning plate 4111. Rotating the knob 4240 in the tension direction R1 rotates the gear 4220, bringing the two gear racks 4210 closer to each other and reducing the diameter of the fixing member. A user can rotate the knob 4240 in the release direction R2 to rotate the gear 4220 in the release direction R2 and move the two gear racks 4210 away from each other. As shown in FIG. 12 , the knob 4240 is pulled upward along the axis X1 to move to a second position, with the knob protrusion 4243 engaging the other housing annular groove 4255 farther from the positioning plate 4111. The transmission wheel 4260 also moves to disengage from the coupling teeth of the gear 4220. Therefore, the gear 4220 is not constrained by the engaging unit 4230, and the user can separate the two gear racks 4210 from each other by pulling any part of the fixing member to achieve a complete release effect.

[0036] Figure 13 is an exploded view of a fastening device 5200 of a fastening system according to a fifth embodiment of the present disclosure. Figure 14 is another exploded view of the fastening device 5200 in the fifth embodiment of Figure 13. The fastening system of the fifth embodiment (no numbers in the fifth embodiment) is similar to the fastening system 1000 of the first embodiment, but the structure of the fastening device 5200 is different.

[0037] Figure 15 is a partial cross-sectional view of the fixation device 5200 of the fifth embodiment (Figure 13). Figure 16 is another partial cross-sectional view of the fixation device 5200 in the fifth embodiment of Figure 13. The fixation device 5200 may include two gear racks 5210, a knob 5240, an engagement unit 5230, a gear 5220, and a housing 5250. The engagement unit 5230 does not include drive teeth 1235 like in the first embodiment, but the knob 5240 may include a plurality of knob teeth 5246 that couple to coupling teeth (unnumbered in the fifth embodiment) of the gear 5220 and rotate the gear 5220.

[0038] More specifically, the knob 5240 may include a protruding post (unnumbered) and a connecting post 5245. The protruding post extends from the inside of the upper surface of the knob 5240 toward the engagement unit 5230 and passes through the engagement unit 5230. The knob teeth 5246 are provided on the end surface of the protruding surface and correspond to the coupling teeth. The connecting post 5245 may extend from the end surface of the protruding surface along the direction of the axis X1.

[0039] The gear 5220 may include a gear hole (not numbered) and two flexible clamping portions 5223. The flexible clamping portions 5223 protrude from the gear hole wall. A connecting post 5245 of the knob 5240 protrudes into the gear hole and cooperates with the flexible clamping portions 5223.

[0040] As shown in FIG. 15 , the knob 5240 is in a first position, with the head of the connecting post 5245 located on one side of the flexible clamping portion 5223, i.e., the side closest to the positioning plate 5111. When the knob 5240 is rotated in the tension direction R1, the gear 5220 rotates, moving the two gear racks 5210 toward each other and reducing the diameter of the fixation device. When the user rotates the knob 5240 in the release direction R2, the gear 5220 rotates in the release direction R2 and moving the two gear racks 5210 away from each other. As shown in FIG. 16 , when the knob 5240 is pulled upward along the axis X1 to a second position, the knob teeth 5246 move away from the interlocking teeth of the gear 5220. The connecting post 5245 presses against the flexible clamping portion 5223, deforming it and moving it upward to the other side of the flexible clamping portion 5223, i.e., the side away from the positioning plate 5111. Therefore, the gears 5220 are no longer obstructed by the engagement units 5230, and the user can pull any part of the locking device to move the two gear racks 5210 away from each other, achieving a complete release effect.

[0041] Figure 17 is an exploded view of a fastening device 6200 of a fastening system according to a sixth embodiment of the present disclosure. Figure 18 is another exploded view of the fastening device 6200 in the sixth embodiment of Figure 17. The fastening system of the sixth embodiment (no number in the sixth embodiment) is similar to the fastening system 1000 of the first embodiment, but the fastening device 6200 of the fastening system is different.

[0042] Figure 19 is a cross-sectional view of the fixing device 6200 in the sixth embodiment of Figure 17. Figure 20 is a partial view of the fixing device 6200 in the sixth embodiment of Figure 17, with the knob 6240 omitted in Figure 20. Referring to Figures 17 to 20, the fixing device 6200 may include two gear racks 6210, a knob 6240, an engagement unit 6230, a drive wheel 6220, and a housing 6250.

[0043] Each gear rack 6210 includes a plurality of protruding teeth 6212. The protruding teeth 6212 each include a plurality of edge curves 6212a, each selected from a logarithmic spiral curve, an Archimedes spiral curve, a Pascal's Limacon curve, an elliptic curve, a high-order curve, a bonded curve, or a combination thereof. The drive wheel 6220 may include a plurality of drive pins 6224 cooperating with the protruding teeth 6212. The engagement unit 6230 does not include the drive teeth 1235 of the first embodiment and is integrally connected to the drive wheel 6220.

[0044] The housing 6250 may include a bottom 6257 connected to one end of the housing wall 6252. The drive wheel 6220 may be sandwiched between a partition (not numbered in the sixth embodiment) and the bottom 6257. The housing 6250 may further include four gear rack holes 6256, which are symmetrically located on the housing wall 6252 and symmetrically arranged in a 2x2 configuration. Each gear rack 6210 can pass through two of the gear rack holes 6256 to enter the space enclosed by the housing wall 6252.

[0045] As shown in FIG. 20, each protruding tooth 6212 includes an edge curve 6212a, so that when the drive wheel 6220 rotates, the drive pin 6224 pushes the protruding tooth 6212 to move the gear rack 6210 linearly, thereby tightening or loosening the locking device.

[0046] Although the present disclosure has been described in detail with reference to specific embodiments, other embodiments are possible, and therefore, the spirit and scope of the appended claims should not be limited by the description of the embodiments contained herein.

[0047] It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present disclosure without departing from the spirit and scope of the disclosure. Thus, it is intended that the present disclosure cover the modifications and variations of this disclosure provided they come within the scope of the appended claims.

Claims

1. 1. A fastening system comprising: a fixed member disposed on a fixed object and including a main frame and at least one guide portion, the at least one guide portion being independent from the main frame; A fixing device disposed on the main frame, at least one gear rack surrounded by the main frame and having an inner end and an outer end; a gear engaging an inner end of said at least one gear rack; a knob operably connected to the gear; and a fixing device including an engagement unit disposed between the gear and the knob; a race that passes through the main frame and the at least one guide portion, the race having one end connected to an outer end of the at least one gear rack; When the knob is rotated in a tension direction by a force, the gear rotates to drive the at least one gear rack, and the race pulls the at least one guide portion toward the main frame, and when the force is released, the engagement unit prevents the gear from rotating in the release direction, thereby fixing the position of the at least one gear rack.

2. 2. The fastening system according to claim 1, wherein the at least one gear rack includes a plurality of protruding teeth, the gear includes a plurality of rotating teeth corresponding to the protruding teeth, and each of the protruding teeth and each of the rotating teeth has an inclined tooth or a helical tooth structure.

3. 2. The fastening system according to claim 1, wherein the fixing member further includes a subframe, the number of the at least one guide portion is two, one of the two guide portions is disposed at one end of the subframe, and the other of the two guide portions is disposed at the other end of the subframe.

4. 4. The fastening system according to claim 3, wherein the main frame includes a positioning plate, a connecting portion, and two holes, the positioning plate and the connecting portion are connected in an inverted T-shape, the two holes are provided at two ends of the positioning plate, respectively, and the race passes through the two holes to connect with the two guide portions.

5. 5. The fastening system according to claim 4, wherein the number of the at least one gear rack is two, and the main frame further includes two gear rack grooves spaced apart from each other on the arrangement plate, and the two gear racks are inserted into the two gear rack grooves, respectively.

6. 2. The fastening system of claim 1, wherein the hardness of the at least one gear rack is 50D or greater.

7. 2. The fastening system according to claim 1, wherein the fixing member further includes a housing assembled with the fixing member, the housing including a housing wall and a plurality of housing teeth, the housing teeth being disposed on the housing wall, and the engaging unit being disposed within the housing and including elastic claws corresponding to the housing teeth.

8. 8. The fastening system according to claim 7, wherein the engagement unit further includes an engagement disk and a blocking portion, the elastic claw includes an arm portion and a tooth portion, the arm portion extends outward in a circumferential direction from the engagement disk, the tooth portion is connected to a tip of the arm portion, the blocking portion protrudes outward from the engagement disk and is located downward along the axial direction of the arm portion, and the tooth portion corresponds to the blocking portion when the elastic claw is deflected radially inward.

9. 8. The fastening system according to claim 7, wherein the fixing device further includes a transmission wheel, the transmission wheel being coupled to the knob along an axial direction and connected to the engagement unit in a rotationally restricted state, the transmission wheel including a plurality of transmission teeth facing a gear, the gear including a plurality of coupling teeth engaging with the transmission teeth, and the transmission wheel disengaging from the gear when the knob is pulled up in the axial direction.

10. 8. The fastening system according to claim 7, wherein the engagement unit further includes a plurality of recesses facing the knob, the knob including a plurality of drive tabs and flexible tabs, the drive tabs each protruding into the recess, and the flexible tabs protruding into a gap between the resilient claw and the housing tooth, and when the knob is rotated in a tension direction, the drive tabs drive the engagement unit to rotate the gear in the tension direction, and when the knob is rotated in a release direction, the drive tabs each move within the recess, and the flexible tabs push the resilient claw to bend radially inward, thereby separating the resilient claw from the housing tooth.

11. 1. A fastening system comprising: a fixing member disposed on a fixing object, the fixing member including a main frame and at least one guide portion, the main frame and the guide portion being spaced apart from each other; A fixing device disposed on the main frame, at least one gear rack having an inner end and an outer end; a gear engaging the inner end of the at least one gear rack; a knob operably connected to said gear; an engagement unit including a resilient claw and positioned between the gear and the knob; and a fixing device including: a housing for engaging with the knob and accommodating the engagement unit, the housing having a plurality of housing teeth surrounding the engagement unit, the resilient pawl selectively engaging with the housing teeth; a race that passes through the main frame and at least one guide portion, and one end of the race is connected to an outer end of the at least one gear rack; When the knob is rotated in a tension direction by a force, the resilient pawl separates from the housing teeth, allowing the gear to drive the at least one gear rack, and the race pulls the at least one guide portion toward the main frame, and when the force is released, the resilient pawl engages with the at least one housing tooth, preventing the gear from rotating in the release direction and fixing the position of the at least one gear rack.

12. 12. The fastening system of claim 11, wherein the at least one gear rack includes a plurality of protruding teeth, the gear includes a plurality of rotating teeth corresponding to the protruding teeth, and each of the protruding teeth and each of the rotating teeth has an inclined tooth or a helical tooth structure.

13. 12. The fastening system according to claim 11, wherein the fixing member further includes a subframe, the number of the at least one guide portion is two, one of the two guide portions is disposed at one end of the subframe, and the other of the two guide portions is disposed at the other end of the subframe.

14. 14. The fastening system according to claim 13, wherein the main frame includes a positioning plate, a connecting portion, and two holes, the positioning plate and the connecting portion are connected in an inverted T-shape, the two holes are provided at two ends of the positioning plate, respectively, and the race passes through the two holes to connect with the two guide portions.

15. 15. The fastening system according to claim 14, wherein the number of the at least one gear rack is two, and the main frame further includes two gear rack grooves provided on a positioning plate, the gear rack grooves being spaced apart from each other, and the two gear racks are configured to be inserted into the two gear rack grooves, respectively.

16. 15. The fastening system of claim 14, wherein the housing is integrally connected to the positioning plate, the housing includes a housing wall, the housing teeth are provided on the housing wall, and the engagement unit is disposed within the housing.

17. 12. The fastening system according to claim 11, wherein the engagement unit further includes an engagement disk and a blocking portion, the elastic claw includes an arm portion and a tooth portion, the arm portion extends outward from the engagement disk in a circumferential direction, the tooth portion is connected to a tip of the arm portion, the blocking portion protrudes outward from the engagement disk and is located downward in an axial direction of the arm portion, and the tooth portion corresponds to the blocking portion when the elastic claw is deflected radially inward.

18. The fastening system of claim 11, wherein the engagement unit includes a plurality of drive teeth facing the gear, and the gear further includes a plurality of coupling teeth engaging the drive teeth.

19. 12. The fastening system according to claim 11, wherein the engagement unit further includes a plurality of recesses facing the knob, the knob including a flexible tab and a plurality of drive tabs, the drive tabs each protruding into the recess, the flexible tabs protruding into a gap between the resilient claw and the housing tooth, and when the knob is rotated in a tension direction, the drive tabs drive the engagement unit to rotate the gear in the tension direction, and when the knob is rotated in a release direction, the drive tabs each move within the recess, and the flexible tabs push the resilient claws to bend radially inward, thereby separating the resilient claws from the housing tooth.

20. 12. The fastening system according to claim 11, wherein the hardness of the at least one gear rack is 50D or greater.

21. 1. A fastening system comprising: a fixing member disposed on a fixing object, the fixing member including a main frame and at least one guide portion, the guide portion and the main frame being spaced apart from each other; A fixing device disposed on the main frame, at least one gear rack including a plurality of protruding teeth, each of said protruding teeth having a plurality of edge curves, each of said edge curves being selected from a logarithmic spiral curve, an Archimedes spiral curve, a Pascal's Limacon curve, an elliptic curve, a high-order curve, a bonding curve, or a combination thereof; a drive wheel including a plurality of drive pins corresponding to said protruding teeth; a knob operably connected to the drive wheel; and a locking device including an engagement unit disposed between the drive wheel and the knob; a race that passes through the main frame and the at least one guide portion, and one end of the race is connected to the at least one gear rack, When the knob is rotated in a tension direction by a force, the drive wheel rotates to drive the at least one gear rack, and the race pulls the at least one guide portion toward the main frame, and when the force is released, the engagement unit prevents the drive wheel from rotating in a release direction to fix the position of the at least one gear rack.

22. 22. The fastening system according to claim 21, wherein the fixing member further includes a subframe, the number of the at least one guide portion is two, one of the two guide portions is disposed at one end of the subframe, and the other of the two guide portions is disposed at the other end of the subframe.

23. 23. The fastening system according to claim 22, wherein the main frame includes a positioning plate, a connecting portion, and two holes, the positioning plate and the connecting portion are connected in an inverted T-shape, the two holes are provided at two ends of the positioning plate, respectively, and the race passes through the two holes to connect with the two guide portions.

24. 24. The fastening system according to claim 23, wherein the fixing device further includes a housing assembled with the fixing member, the housing including a housing wall, a bottom, a plurality of housing teeth, and at least two gear rack holes, the housing teeth are provided on an inner surface of the housing wall, the bottom is connected to one end of the housing wall, the at least two gear rack holes are arranged symmetrically with respect to the housing wall, the at least one gear rack passes through the at least two gear rack holes and enters a space enclosed by the housing wall, and the engaging unit is arranged in the housing and includes elastic claws corresponding to the housing teeth.

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