JP3960656B2 - Fastening device with emergency release by a nut body that can be expanded - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a fastening device capable of emergency release and emergency mounting, which has a fastening tool, an expandable nut body engaged therewith, and a hole engageable with the nut body. The present invention relates to a tightening device that is used to quickly and easily remove, attach and / or adjust a wheel device, or to quickly and easily remove and attach an anti-skid to footwear or the like.
[0002]
[Prior art]
Currently, various tightening devices for attaching a wheel device to an inline roller skate are used. These conventional tightening devices include a head, a shaft portion, and a screw portion formed on a shaft portion on the opposite side of the head. The threaded portion can be engaged with a corresponding threaded nut. The chassis or frame portion of the inline skate is provided in order to hold a plurality of wheel portions aligned in a substantially straight line. Each wheel device is inserted through one side of the frame, passes through a hole formed in the frame, and further passes through a central sleeve hole in the wheel device and extends through a hole on the opposite side of the frame. It is held on the frame with a tool. The nut engages the threaded portion of the fastener, thereby attaching the wheel portion in the correct position relative to the frame.
[0003]
[Problems to be solved by the invention]
One of the challenges in conventional clamping devices is for the purpose of repair, replacement, or to adjust the wheels to reconfigure or reposition the skate wheels, or to provide, for example, a “swing” effect In addition, it takes time to remove the wheel. Ordinary skaters may not mind the time to replace one or more wheel devices, but there are many cases where quick repair and replacement is important, such as in-line hockey competitions, and The key to the initial assembly of the inline skate and the repair of the inline skate by the repairman is easy, efficient and reliable wheel removal and replacement.
[0004]
Thus, as the popularity of competition using inline skates increases, the need for quick, efficient and reliable wheel equipment removal and replacement has increased. For example, inline skate hockey is a professional It is a sport that is gaining popularity both at the level and at the amateur level, and there are numerous races throughout the country where inline skaters compete for distance and time, in which they are quick and efficient And reliable removal and replacement of the wheel device is important. Even recreational inline skater may need to change wheel material for repair purposes or to use wheel material of different composition for the surface to be skate. Speed and efficiency may not be a requirement, but it is also desirable for recreational skater to be able to repair or replace a wheel as quickly and easily as possible.
[0005]
It is also easy for recreational amateurs and professional competitors to use if they want to reconfigure the inline skates for the purpose of “rocking” shapes. It is important that the clamping device is possible and reliable. Traditionally, inline skates are shapes where the wheels are generally abutting or in contact with a common surface or skate surface, whereas a “swing” shape has one or more end wheels. A substantially curved surface is provided by moving from the common surface. The rocking shape is similar to hockey skates, with the skate blades grounding with a slightly convex bow rather than being a flat blade as used in figure skates. It will be apparent that it would be desirable to quickly and easily reconfigure an inline skate wheel system for use in this manner.
[0006]
Another problem of the prior art is that the hardware associated with the clamping device has conventionally been provided with a number of members composed of at least an elongated fastener / shaft and an engaging nut. Since the clamping device has two or more members that must be separated in order to remove, install or adjust the wheel, the member will be lost and the time for operating the wheel device will be increased. It will be. Since the nut is not captured and retained by the fastener / shaft, the nut will fall off and be lost, and the person replacing the wheel system will need to find another nut to proceed. As a result of the desire to have a grooved nut, the problem is exacerbated by requiring the nut to be positioned in the groove to prevent damage to the nut. Providing a groove in the nut complicates the problem because the threaded portion of the fastener is aligned through the wheel sleeve hole and through the opposite opening of the opposite member of the frame.
[0007]
An example of a prior art clamping device for use in inline skating is the following U.S. patent, U.S. Pat. No. 4,909,523 granted to Olson on March 20, 1990, and 1991. U.S. Pat. No. 5,028,058 granted to Olson on July 2, 1992 and U.S. Pat. No. 5,048 granted to Olson et al. On September 17, 1991. , 848, US Pat. No. 5,068,956 granted to Malevicz on December 3, 1991, and US Pat. No. 5 granted to Malevicz on March 3, 1992. , 092,614. The device disclosed in Malevicz '956 uses a cap that covers the nut and does not require a groove in the nut. However, the Malevicz '956 device requires that the fastener be rotated many times to ensure that the fastener is engaged with the nut. It has been disclosed in the above cited references that the fastener must be rotated many times in order to ensure that the fastener is engaged with the nut.
[0008]
An anti-skid device for athletic footwear is another application that requires quick, easy and reliable device removal and replacement. Non-skid footwear for athletics is widely used for various sports activities. For example, anti-skid is used in professional and amateur sports such as soccer, baseball, football, athletics, rugby, etc., to name a few examples. It is regularly necessary to replace the anti-skid when the anti-skid is worn or damaged, or to change the anti-skid depending on the type of surface used in the stadium.
[0009]
Conventionally, the anti-skid device of the prior art uses a nut body that is embedded in the sole of an athletic footwear. The threaded antiskid is driven into the embedded nut body. These anti-skid devices ensure positive engagement of the anti-skid footwear with the shoe sole, but such engagement takes time.
[0010]
With the above-described embodiments of the inline skate wheel device tightening device and the athletic footwear anti-skid device in mind, the benefits of the tightening device to improve the speed, efficiency and reliability of the removal and replacement of the fasteners. It will be clear that there are many other uses that you will receive.
[0011]
A main object of the present invention is to provide a tightening device capable of quickly and efficiently attaching and removing a member to be held.
[0012]
Another object of the present invention is to provide a clamping device that can be used as an inline skate shaft to hold the wheel device in a rotational position relative to the frame of the inline skate.
[0013]
Furthermore, another object of the present invention is to provide a tightening device capable of quickly, efficiently and reliably mounting a slip stopper on footwear.
[0014]
Still another object of the present invention is to provide a tightening device capable of emergency adjustment of an in-line skate wheel device.
[0015]
[Means for Solving the Problems]
Briefly described, the present invention relates to a novel emergency release tightening device for performing efficient and reliable attachment, disengagement and reattachment of members attached by a tightening device. The fastening device has an elongated fastening member having a shaft structure having a drive structure at one end and a threaded portion at the other end, and the fastening device includes a threaded portion of the fastening tool. The nut member engages and can engage with the wheel hole cover of a circular or polygonal hole. A nut expansion structure is provided in the nut and the fastening tool, and the nut is provided so as to expand and expand when the fastening tool rotates and engages. First, the nut is held on the screw portion of the fastener by disengaging the nut expansion structure. The workpiece is provided with a hole for receiving the nut. A key or equivalent structure is formed in the hole, and a keyway or equivalent structure is formed in the nut. The keyway is dimensioned to receive the key. The keyway allows the key to engage the keyway to expand or unfold the nut and prevent the nut from rotating within the hole. By rotating the fastener about 90 degrees or a quarter with respect to the nut, the nut is engaged with the nut expansion structure of the nut and the nut, and the outer surface of the nut is forcibly joined to the inner surface of the hole. Engaged. Since the wheel or anti-skid can be removed or attached by rotating the fastener only by a quarter turn, the fastening device is attached to the inline skate of the wheel device and attached to the footwear of the anti-skid. Especially useful for. In particular, in an inline skate device, the elongate fastener functions as a shaft to hold the wheel device in place. In this way, the nut is released from the engagement with the hole associated with the nut member by rotating the fastener by a quarter of a turn. With the expansible nut attached, the fastener / shaft is removable, the wheel is replaced, the fastener / shaft is reinserted, and then the fastener is attached with a quarter turn.
[0016]
【Example】
While the invention is susceptible to differently shaped embodiments, it is understood that the description of the invention is believed to be illustrative of the principles of the invention and is not limited to the invention shown and described herein. The embodiment will be illustrated and described in detail below.
[0017]
In FIG. 1, a single roller skate 20 of the type often referred to as an “in-line” roller skate has a boot portion 24 and a wheel frame 28 attached to the boot portion 24, the wheel frame 28 comprising a plurality of wheel frames 28. 2 to FIG. 7, the wheel frame 28 includes a first side rail 32 and a second side rail 36. The side rails 32 and 36 are spaced apart and define a groove 40 therebetween. Each wheel device 30 is held in place in the groove 40 by a fastener / shaft device 44.
[0018]
The tightening device 44 is provided with a shaft and a structure for holding the shaft in engagement with the first and second side rails 32, 36. The expandable nut body 52, the fastener 48, and the nut expansion structure 56 of the nut body 52 are configured. The fastening tool 48 has a shaft portion 60, and a driving structure 64 is provided at one end portion thereof, and a screw portion 68 is provided at the other end portion on the opposite side of the driving structure 64.
[0019]
The expansible nut body 52 is provided in the form of a single wall structure 72 having two ends 74, 76 that form a keyway 78, which wall structure 72 defines an outer surface 82 and an inner surface 86. The thread 90 provided on the inner surface 86 engages with the thread 94 of the threaded portion 68 of the fastener 48. The nut body 52 can be disposed in the hole by engaging the outer surface 82 with the surface portion of the hole.
[0020]
The nut expansion structure 56 has a taper surface 98 on the shaft portion 60 of the fastener and a nut taper surface 102 at the tip 104 of the nut, and these taper surfaces 98 and 102 attach the fastener 48 to the nut body 52. By being engaged with the screw, it is guided to a close position. By continuing to rotate or engage the fasteners 48 within the nut body 52, the tapered surfaces 98, 102 engage (see FIGS. 2 and 5) and expand or expand the nut body 52. Will cause opening.
[0021]
The nut body 52 has an outer diameter (indicated by dimension 108 in FIG. 6) that increases as the fastener 48 continues to rotate within the nut body 52 after contacting the tapered surfaces 98 and 102. In the preferred embodiment of the present invention, when the tapered surfaces 98 and 102 are engaged, the nut 48 is expanded and expanded by rotating the fastener 48 about a quarter turn, about 90 degrees, with respect to the nut body. Threads 90 and 94 are dimensioned to do so. The fastening mechanism / shaft device 44 used for the article such as the inline roller skate 20 shown in FIG. 1 is securely attached by the spreading mechanism of the nut spreading structure 56 and the force caused thereby.
[0022]
Further, FIG. 2 to FIG. 7 will be described. First, FIG. 2 shows a partial longitudinal section of the wheel device 30 held in the groove 40 between the first and second side rails 32 and 36 by the tightening device 44. It is a side view. The bush 114 is provided in the embodiment shown in FIGS. 2 to 7, and as will be described in more detail later, the bush 114 may be replaced or removed. For this purpose, it is found in many models of inline roller skate 20. As shown in FIG. 2, the fastener extends through the first shaft hole 112 defined by the hole of the bush 114 while holding a part of the shaft portion 60 in the first shaft hole 112. . The nut body 52 is inserted through the first shaft hole 112 and is disposed in the second shaft hole 116 defined by the hole of the receiver or the second bush 114. A part of the shaft portion is disposed in the shaft hole 117 of the bearing device 118 of the wheel device, and a shaft to which the wheel device 30 is attached is provided. The details of the bearing device 118 are not described in detail here, but are generally of a known structure.
[0023]
The outer diameter 120 of the shaft portion 60 and the outer diameter 108 of the unexpanded nut body 52 are substantially equal, and are equal to or slightly smaller than the inner diameter 122 of the shaft hole 117 and the shaft holes 112 and 116. Due to these dimensional relationships, the nut body 52 attached to the fastener 48 is inserted through the first shaft hole 112, through the sleeve hole 126 and into the second shaft hole 116 in the axial direction. The tightening device 44 can be attached to the first and second side rails 32 and 36 through the wheel device 30. This arrangement eliminates the need for threaded engagement of the fastener 48 with the nut body 52, which can be a complicated, time consuming and unreliable process.
[0024]
Further, a key 130 is provided in the second shaft hole 116, and the key 130 is accommodated in the key groove 78, and by engaging the key 130 with the key groove 78, the fastening tool 48 is attached to the nut body. When rotating in 52, while preventing the nut body 52 from rotating with respect to the second side rail 36, the nut body 52 is expanded and engaged with the hole. The key 130 is sized smaller than the keyway 78 to minimize the coupling between the two structures when the nut body 52 engages the key 130.
[0025]
As shown in FIG. 2, the tightening device 44 extends through the wheel device 30 and is attached to the first side rail 32 and the second side rail 36. The tightening tool 48 rotates 90 degrees with respect to the nut body 52 and urges the taper surface 98 of the tightening tool to be expanded and engaged with the taper surface 102 of the nut. Since the nut expansion structure 56 is engaged, the expansion and expansion of the nut body 52 causes compression friction engagement between the outer surface 82 of the nut body 52 and the inner surface of the second shaft hole 116. Become. In the figure, the frictional engagement between the outer surface 82 of the nut body 52 and the inner surface of the shaft hole 116 is shown. An engagement structure having another shape such as a mechanical interlock can be used for the nut body 52 of the fastener / shaft device 44 of the present invention. The drive structure 64 has an enlarged head 136 that holds the fastener against the surface 138 of the first side rail 132. FIG. 3 is an exploded perspective view further illustrating the relationship between the tapered surfaces 102 and 104 and the key groove 78 of the key 130.
[0026]
Moving from FIG. 2 to FIG. 4, the drive structure 64 is engaged and the fastener 48 is moved a predetermined amount, eg, a quarter, to disengage the nut expansion structure 56. When rotating (about 90 degrees), the outward force that has engaged the outer surface 82 of the nut body with the inner surface of the shaft hole 116 is released, and when the force is released, the tightening device 44 is connected to the shaft hole. 116 and 112 and the sleeve hole 126 can be pulled out in the axial direction. The withdrawal of the clamping device 44 is illustrated in FIG.
[0027]
This clamping device 44 is convenient for providing a capture member device that minimizes or does not cause loss of the member since the nut body 52 is held by screw engagement with the fastener 48. Furthermore, the tightening device 44 is efficient because it does not need to be screwed each time the tightening tool 48 is inserted into the wheel frame 28. When using prior art fasteners, the fasteners must be inserted through the appropriate holes and then the nut body must be threaded from the opposite side. In view of the new improvements according to the invention, this is time consuming and useless.
[0028]
FIG. 21 shows a modification of the present invention in which the fastener / shaft device 44f can be used in a conventional skate structure as a device to be attached later. In the embodiment shown in FIG. 21, the apparatus is constituted by a fastener 48f, a nut 52, and a receiver 139 for receiving the nut 52, and the receiver 139 has a hole 141 having a key 130 on its inner surface. On the other hand, the nut 52 is engaged with the hole 141 by joining the key groove 78 to the key 130 as described above, the flange 143 of the receiver 139 covers the outer surface 145 of the side rail 36, and the flange 143 is The receiving body 139 is actively brought into contact with the side rail 36 to prevent the fastening tool 44f, the receiving body 139, and the bush 144 passing through the side rail 36 from being removed in the axial direction.
[0029]
The shaft portion 60f of the fastener 48f has a shaft portion 60f that extends through the shaft hole 117 and protrudes beyond the outer surface 145 of the side rail 36. Therefore, the fastener 60f shown in FIGS. It is longer than 48 shaft portions 60. Since the shaft portion protrudes beyond the side rail 36, the fastening device 44f can be used for a conventional bush and wheel device. It can be set as the structure used as an apparatus attached later. In such a relationship, the embodiment shown in FIG. 21 does not require a key to be formed on the bush. The key of the embodiment of FIG. 21 is in the hole of the receiver 139. The outer surface 147 of the receiver 139 is provided with a wrench structure, which can receive and engage a wrench tool. Normally, the clamping device 44f is operated by the method of the clamping device 44 described above. The fastener 48f is inserted through the side wall 33, through the shaft hole 117, and through the side wall 36 after the key 130 is aligned with the key groove 78 and the nut 52 is inserted into the receiver 139. The The fastening tool 48f is rotated so that the outer surface of the nut 52 is engaged with the inner surface 141 of the receiver 139, and the nut 52 is expanded.
[0030]
Next, FIG. 8 shows an additional improvement by adding a spring device 142 to the clamping device 44 of the present invention. Although the spring device or biasing device 142 can be of various configurations, a helical coil compression spring is shown in FIG. 8 as a preferred embodiment of the spring device 142. The spring device 142 has an outwardly disposed coil capable of accommodating the coil in the groove 143 of the side rail 32 when the spring is compressed and assumes a nominal side. The first end portion 144 of the spring device is attached to the shaft portion 60 below the head 64 and holds the spring device 142 as a catching piece of the clamping device 44, and the second end portion 146 of the spring device is the first end portion 146. It can be set as the structure attached to the one side rail 32. FIG. By attaching the spring device to the fastening tool and the side rail, the fastening device 44 becomes a hardware capture piece of the wheel frame 28.
[0031]
The spring device 142 is designed with a spring constant that removes or removes the tightening device 44 from the second shaft hole 116 and the shaft hole 117 when the rotation of the fastener is released. The attaching device 44 is moved, and the fastening device 44 can be removed from the wheel groove while the fastening device 44 is held on the wheel frame 28. The advantage of this capture device is that no member is removed from the wheel frame 28 in normal use. As described above, by using the spring device 142 together with the tightening device 44, the wheel of the wheel frame 28 can be quickly and efficiently removed and replaced.
[0032]
9 and 10 illustrate a modification, the same structure as described in FIGS. 1 to 7 is denoted by the same reference numeral, and the structure of the modification is an alphabetic character such as a fastening device 44a, for example. A suffix is added to indicate the same reference number. 9 and 10, the fastening device 44a is almost the same as the fastening device 44 shown in FIGS. 9 and 10, the annular groove 150 is provided in the shaft portion 60 a at a position separated from the head 64. The first and second shaft holes 112a and 116a are formed by two chambers, an upper chamber 154 and a lower chamber 158. The upper and lower chambers 154, 158 substantially overlap the holes of the first side rail and the second side rail 32a, 36a. The overlap portion forms a passage 162 having a small radial dimension. The upper and lower chambers 154, 158 of the second shaft hole 112 a have a key 130 that is dimensioned to engage the keyway 78 of the nut 52.
[0033]
9 and 10 allows the wheels attached to the wheel frame 28 to “swing”. By swinging, individual wheels can be adjusted relative to the frame for various purposes, such as resembling a hockey skate surface, or to distribute the load. An example of an oscillating structure illustrated in the prior art is disclosed in US Pat. No. 5,028,058 issued to Olson on July 2, 1991. The swing device disclosed in Olson, U.S. Pat. No. 5,028,058, has a plug or bush having an eccentric shaft mounting hole. The plug can be turned over to change the position of the holes and change the position of the wheels in the frame. Further, the bush 114 is formed integrally with the side rails 32a and 36a. However, as described above, the chambers 154 and 158 are formed as removable bushes as shown in FIGS. be able to.
[0034]
The device disclosed in Olson, US Pat. No. 5,028,058 is useful for adjusting the wheels, but can be a time consuming and somewhat difficult process. The invention makes it possible to change the wheel adjustment quickly and efficiently. In the present invention, the tightening device 44a is inserted through predetermined chambers 154 and 158 of the first shaft hole 116a, and positions the nut 52 in the corresponding chambers 154 and 158 of the second shaft hole 112a. The key 130 is engaged with the key groove 78.
[0035]
As an example, moving the clamping device 44a from the lower chamber 158 to the upper chamber 154 to adjust the wheels above the frame is an efficient and uncomplicated process. First, when the fastener 48a is rotated about a quarter of the time according to the method described above, the nut expansion structure 56 is disengaged, and the fastener 48a to which the nut 52 is attached is indicated by a directional arrow 166. (B) Pulled out in a substantially axial direction, and the annular groove 150 is pulled out to a point where it is aligned with the passage 162 of the first shaft hole 116a (see FIG. 10). The position of the annular groove 150 along the shaft portion 60 is at a position having a dimension 168 that is substantially the same as the length 170 of the nut 52 and the width 170 of the side rail 36a. Furthermore, the length of the annular groove 150 is slightly larger than the width 170 of the side rail 32a. Thus, the annular groove 150 is aligned with the passage 162 at the position where the nut 52 passes, and is completely disengaged from the second shaft hole 112a.
[0036]
The clamping device 44a is thus positioned and moves through the passage 162 to the position of the upper chamber 154, aligning the keyway 78 with the key 130, and moving the clamping tool 48a and nut 52 to the second It can be inserted into the chamber 154 above the shaft hole 112a. When the nut 52 is placed in the upper chamber 154, the fastener 48a rotates about a quarter of a turn to re-engage with the nut expansion structure 56 to expand the nut 52 and expand the upper chamber 154. The nut 52 is held.
[0037]
The fact that the upper chamber 154 is substantially diagonal with respect to the lower chamber 158 is convenient for holding the fastening devices 44a of the shaft holes 112a and 116a. For example, the shaft holes 112a and 116a support the fastening device 44a and the wheel held by the fastening device against upward and downward forces. As shown in FIG. 6, the upper and lower chambers 154, 158 are provided with inner surfaces for supporting the fastening device and the wheels attached to the fastening device against upward and downward forces. . Further, lateral forces are clearly and completely supported in at least one direction for each of the upper and lower chambers 154,158. In addition, even lateral forces from each of the upper and lower chambers 154 and 158 toward the passage 162 cause the upper rim 174 and the lower rim 178 to be associated with the respective passage 162 so that they are almost completely Supported by
[0038]
The spring device 142 described above can be configured to be used in the adjustment structure described with reference to FIGS. Actually, the spring is very applicable to the adjustment shape for limiting the elongation rate of the fastener from the shaft holes 112a and 116a. In order to use a spring in the embodiment illustrated in FIGS. 6 and 7, the spring constant and overall dimensions of the spring must be selected so that a predetermined elongation is achieved. One skilled in the art using the method of the present invention would be able to determine the required spring constant to disengage only the nut 52 from the second shaft hole 112a, for example.
[0039]
11 to 13 show a variant of the nut according to the invention, wherein the same structure as shown and described in the previous drawings uses the same reference numerals and the modified structure is, for example, that of the nut 52b. As shown using alphabetic suffixes.
[0040]
Essentially, the difference between the nut 52b shown in FIGS. 11 to 13 and the nut 52 shown in FIGS. 1 to 7 is that the nut 52b has a plurality of key grooves 78, 220, 222, and 224. . Similarly, a plurality of keys 130, 226, 228, and 230 are provided in the shaft hole 116b of the bush 114b. The key groove 78 and the corresponding key 130 are engaged in the same manner as shown in FIGS. The key grooves 220, 222, and 224 are different from the key groove 78, and do not extend completely through the wall 72 of the nut body 52b. In general, the keys 130, 226, 228, and 230 have the same dimensions and can be engaged with any of the key grooves. As described above, even if the engagement of the key groove 78 shown in FIG. 13 with the key 130 is the same as that shown in FIG. In order to engage, the nut body 52b can be rotated so that it can be engaged in any direction with respect to the key.
[0041]
The purpose of the multiple keyways and keys is that the nut can be inserted and properly positioned and held against rotation with little effort. The nut structure 52 shown in FIGS. 2 to 7 holds the nut 52 against rotation, but may need to be rotated in order to place the key 130 in the keyway 78. Thus, according to the embodiment shown in FIGS. 11 to 13, if one of the keys 130, 226, 228, 230 is rotated by only about 90 degrees, one of the key grooves 78, 220, 222, 224 and Engagement is possible. The nut body 52b having a plurality of key grooves helps to quickly arrange the nut in the shaft hole 116b.
[0042]
Next, FIGS. 14 and 15 show another variation of the present invention in which a bush 234 is provided and defines a hole 236. The hole 236 defines the hole 116c. Within the hole 116 c, the nut 52 is held and engaged in order to hold the tightening device 44 by engaging the side walls 32 and 36 and the wheel device 30. Further, a conical coil spring 238 is disposed between the end wall 240 of the hole 236 and the ends of the nut 52 and the fastener 48. When the nut 52 is engaged with the hole 116c, the spiral coil spring 38 is wound spirally inwardly. When the fastener 60 is rotated about 90 degrees by a quarter with respect to the nut 52, the force is released between the nut 52 and the hole 116c, and the nut is disengaged from the hole 116c. The helical coil spring 238 is provided with a spring constant having a force sufficient to push the released tightening device through the shaft hole 117 and through substantially the axial direction.
[0043]
The coil spring 238 ensures that the skate user notices that the fail-safe mechanism is provided because the fastener 48 protrudes from the side rail 32. Further, when the coil spring 238 is disengaged from the frame and the wheel device 30, the coil spring 238 serves to discharge or remove the clamping device 44 from the frame and the wheel device 30, and the clamping device 44 can be removed more easily.
[0044]
16 and 17 show another modification of the present invention, which includes a drive end 64e and a ball-like projection device 244 disposed on a portion of the shaft 60e of the fastener 48e. The ball-shaped projection device is provided with a pushing structure 246, an urging spring 248, and an engaging ball 250, and the pushing structure comprises a ball moving part 252 and a shaft part 254, and the shaft part. Extends in the drive tool groove 256 formed in the drive end 64e of the fastener 48e.
[0045]
The pushing structure 246 is held in the pushing hole 258 with the shaft portion extending from the pushing hole 258 to the driving tool groove 256, and the engagement ball 250 is held in the second hole 260 communicating with the pushing hole 258. The urging spring 248 is held between the ball moving portions 252 of the push holes 258.
[0046]
Note that the wall of the second hole 260 is tapered inward to hold the engagement ball and prevent the engagement ball from being removed therefrom. When the engagement ball 250 protrudes from the second hole 260, the engagement ball 250 engages with a groove 262 formed in the bush 114. As shown in FIG. 16, the engagement ball 250 is used to determine whether a nut (not shown in FIGS. 16 or 17 but shown in FIGS. 2 to 15) is engaged with a corresponding bush. Regardless, it projects into the groove 262 and engages the bushing 114 and holds it. In other words, regardless of whether the clamping tool is rotated to expand the nut and the clamping device is held in axial alignment with the wheel device, the ball-like projection device 246 is tightened. Hold the attachment device. The ball-like projection device is provided with a fail-safe mechanism for holding the fastener and preventing the wheel from being removed from the frame.
[0047]
Referring to FIG. 17, the ball-like projection device is disengaged, the engagement ball 250 is removed from the groove 262, and a portion can be moved into the push hole 258 through the second hole 260. The engagement ball 250 is disengaged from the groove 262 by displacing the shaft portion 254 in the axial direction. When a tool (not shown for simplicity) is inserted into the drive tool groove 256, an axial displacement of this shaft portion occurs. When the tool is inserted, the shaft portion 254 and the ball moving portion 252 compress the biasing spring 248, and when the biasing spring is compressed, the ball moving portion 252 moves to the left (relative to FIG. 17), and the second The engagement balls 250 are passed through to move through the holes 260.
[0048]
When the engagement ball is disengaged, a slight tilting action is applied to the tool used to rotate the shaft portion 60e by a quarter, and the shaft portion 60e is moved with respect to the second shaft hole 117. Hold. Furthermore, the spring disengagement embodiment of the present invention using the helical coil spring 238 illustrated in FIGS. 14 and 15 may be configured for use with this ball projection device. When the engagement ball 250 is disengaged from the groove 262, the helical coil spring 238 is at a distance sufficient to maintain the engagement ball 250 in the disengaged position (shown in FIG. 17). Actuates to displace axially.
[0049]
Next, another embodiment of the present invention will be described. In FIGS. 18 to 20, an anti-skid device 182 using the basic structure and method of the tightening device of the present invention is shown. . In FIG. 18, here are shown a plurality of anti-skid devices 182 engaged with a workpiece 186, shown in the shape of a sole. The anti-skid device allows quick, efficient and reliable engagement, removal and replacement of the anti-skid. That is, as shown in FIG. 19, the anti-slip device includes an anti-slip body 190 and an expandable nut member 52d, and the expandable nut member 52d has a cylindrical outer surface 82 and a through key groove 78d. The anti-slip body 190 includes a projecting head portion 194, a shaft portion having a threaded portion 68d, and a drive structure 64d. The nut expansion structure 56d is composed of a taper surface 98d of a fastener and a taper surface 102d of the nut, and the shoe sole 186 is composed of an inner surface 202 provided with a hole 198 and a key 130d. The anti-slip operation is performed according to the method described above. The drive structure 64 d shown here has a notch 206 formed on the outer surface of the protruding head portion 94 and an engagement structure 210 formed on the annular flange 214, and is one form of the engagement structure 210 of the annular flange 214. Is Torx, a registered trademark of the Camcar section of Textron Inc. Any form of drive structure is acceptable or can be combined to provide additional drive benefits. An annular flange 214 provides additional surface area at the bottom 218 of the workpiece 186 for force distribution.
[0050]
Thus, in the anti-slip device 182, the device is engaged with the hole 198 with the key 130 d disposed in the key groove 78 d in order to prevent the expansion nut member 52 d from rotating. When assembled first, the anti-skid turns a quarter turn, thereby engaging the tapered surfaces 98d and 102d. Further, since the nut member 52d cannot rotate, the nut member 52d is expanded by the advancement of the threaded portion 68d and the engagement of the tapered surfaces 98d and 102d, so that the cylindrical outer surface 82 and the inner surface 202 of the hole 198 are frictionally engaged. Combine. This engagement keeps the anti-skid in the device by a quarter turn, and an emergency release portion of the anti-skid device 182 is provided for easy use to attach and detach the anti-slip to the bottom 218. .
[0051]
While the preferred embodiment of the invention has been illustrated and described, various changes and modifications can be made by one skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims. Is obvious. The present invention is not limited to the above disclosure.
[Brief description of the drawings]
FIG. 1 is a perspective view of a typical conventional inline skate showing a boot portion, a frame, and a plurality of wheel devices attached to the frame;
2 is taken along line 2-2 of FIG. 1 showing a novel clamping device according to the present invention in which a fastener is engaged with an expandable nut to hold the wheel device on the frame of the skate. Partially enlarged longitudinal side view,
FIG. 3 is an exploded perspective view including a partial cross-section of a novel tightening device according to the present invention showing the relationship between a keyway of a nut and a key of a bush;
4 is a view similar to FIG. 2 showing a state in which the nut expanding structure of the fastener and the nut is disengaged from the nut and the fastener so as to be pulled out from the wheel device and the frame;
5 is an enlarged partial cross-sectional view of FIG. 2 showing a threaded portion of a fastener that engages with a nut;
6 is a side view taken along line 6-6 of FIG. 5, showing engagement of the nut with the key when the fastener is screw-engaged with the nut;
7 is an exploded perspective view including a partially enlarged cross-section of the fastening device according to the present invention, showing the relationship between the corresponding part of the frame, the insertion bushing, and the fastening device as a wheel device of FIG. 1;
FIG. 8 is a side view of a partially enlarged cross-section of a supplemental helical fill spring used to disengage and retain the fasteners and nuts relative to the inline skate frame;
FIG. 9 is a perspective view including a partially enlarged cross-section of an embodiment according to the present invention used in a “swing” state for adjusting the wheels of an inline skate;
FIG. 10 shows the state of “swing” in FIG. 9, showing the state where the annular groove of the fastener is placed in the corresponding hole to adjust the position of the associated wheel (shown in phantom). Side view of a partially enlarged cross-section of the clamping device used,
11 is an exploded perspective view including a partially enlarged cross-section of the tightening device according to the present invention similar to FIG. 7, wherein the tightening device uses a nut having four key grooves formed on the outer surface;
12 includes a partially enlarged cross-section of the threaded portion of the fastener engaged with the nut of FIG. 11, showing the position of the three keyways engaged by corresponding keys formed in the bushing holes. Side view,
13 is a side view taken along line 13-13 of FIG. 12, showing an array of nuts in which four keyways are engaged with corresponding keys when the fastener is threadedly engaged with the nuts;
FIG. 14 shows an engagement shaped fastener and nut in which a spring is spirally wound in the bush, and the fastener and nut are disengaged to disengage the nut from the bush. Sometimes a partially enlarged longitudinal side view of a stuffing spring held in one of the bushes to drive against a fastener and nut,
FIG. 15 shows that the nut and the fastener are disengaged, the spring expands with respect to the nut and the fastener, passes through the shaft hole, and the nut and the fastener are displaced in the axial direction. An enlarged view similar to FIG.
FIG. 16 shows that the ball engages with the groove of the bush and engages through the shaft hole to hold the fastener and nut, and the fastener is not engaged with the nut or is tightened to the nut. A partially enlarged longitudinal side view of the ball projection device of the clamping device according to the present invention, which prevents the clamping device from being disengaged from the shaft hole if not
FIG. 17 is a view similar to FIG. 16 in which the ball-like projection device operates to disengage the ball from the groove, and the clamping device can be pulled out from the shaft hole;
FIG. 18 is a perspective view showing a state in which a slip stopper is attached to the shoe sole of footwear;
19 is an enlarged exploded perspective view of the anti-skid of FIG. 18 showing the nut, the screw part of the anti-skid, and the hole in which the key is provided to accommodate the nut and the anti-skid,
20 is a side view of the anti-skid device according to the invention, including a partial cross-section along line 20-20 of FIG. 18, showing the stud and nut engaging the hole in the sole;
FIG. 21 is a novel illustration of the present invention in which a catch disposed on the outside of a corresponding side rail is used to hold a wheel device to a frame of a skate to engage a fastener with an expandable nut. FIG. 3 is a side view of a partially enlarged cross section of a part of a wheel device and a frame similar to FIG.
[Explanation of symbols]
20 Inline roller skates (single roller skates)
24 Boots
28 Wheel frame
30 Multiple wheel structure
32 First side frame
36 Second side frame
40 grooves
44 Fastener / shaft structure (clamping device)
48 Fastener
52 Expandable nut body
56 Nut expansion structure
60 Shaft
64 Drive structure (head)
68 Screw part
72 One wall structure
74,76 Two ends
78 Keyway
82 Exterior
86 Inside
90,94 thread
88,102 Tapered surface
104 Tip of nut
108 Outer diameter
112 First shaft hole
114 bush
116 Second shaft hole
117 Shaft hole
118 Bearing device
120 outer diameter
122 inside diameter
126 Sleeve hole
130 keys
132 First side rail
136 Magnifying head
138 First side rail surface
139 Receiver
141 hole (inner surface)
142 Spring device
143 Flange (groove)
144 Bush (first end of spring device)
145 exterior
146 Second end of spring device
150 annular groove
154 Upper chamber
158 Lower chamber
162 Passage with small radial dimension
166 direction arrow
168 Same dimensions
170 Width of side rail 36a
174 Upper rim
178 Lower rim
182 Anti-slip device
186 Workpiece
190 Anti-slip body
194 Protruding head
198 hole
202 Inside surface
206 Notches
210 engagement structure
214 Annular flange
218 Bottom (shoe sole)
220, 222 Keyway
226, 228, 230 Multiple keys
234 bush
236 holes
238 Conical spiral coil spring
244 Ball projection device
246 Pushing structure
248 Biasing spring
250 engagement ball
252 Ball moving part
254 Shaft
256 Drive tool groove
258 Indentation hole
260 Second hole
262 groove

Claims (3)

A clamping device (44) for attaching a wheel device (30) to a roller skate (20), said roller skate having spaced first and second side rails defining a groove (40) therebetween 32, 36), at least one wheel device has a wheel shaft hole (117), and each of the side rails is substantially the same as one of the corresponding wheel shaft holes. Have matching axial holes (112, 116);
A fastener (48) having a wheel shaft, a drive structure (64) on one side, and a shaft part (60) provided with a screw part (68) on the substantially opposite side of the drive structure;
A wall (72) defining an inner surface (86) and an outer surface (82), and at least one keyway (78) formed in the outer surface of the nut body, at least one of which extends completely through the wall. A nut body (52) having one end defining the tip;
The nut for expanding the nut body is constituted by the fastener and the nut expansion structure (56) at the tip of the nut body,
The fastening tool in which the nut body is held by screw engagement passes through the shaft hole (112) of the first side rail and extends through the shaft hole of the wheel, and the second side rail. At least in close proximity to the second shaft hole (116) of the second side rail so that the nut body is engaged and attached to the inner surface of the second shaft hole. Arranged in the shaft hole of
The outer diameter (120) of the shaft portion of the fastener is substantially equal to the outer diameter (108) of the nut body that is not expanded, and the wheel shaft hole (117) and the shaft hole (112, 116). ) Equal to or slightly smaller than the inner diameter (122) of
A fastening device (44) for attaching the wheel device (30) to the roller skate (20). When the screw portion (68) and the screw (90) of the nut body (52) rotate the fastener (48) about 90 degrees relative to the nut body, the nut expanding structure ( 56) and is dimensioned to engage
Fastening device (44) according to claim 1, characterized in that. A key (130) is provided on the inner surface of the hole (116), and when the key is engaged with the nut expansion structure (56) by rotating the fastener (48), the nut body In order to prevent rotation of (52), it is accommodated in said keyway (78).
Fastening device (44) according to claim 1, characterized in that.

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