JPH10318236A - Fastening device with emergency release by expandable nut body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fastening device to rapidly, efficiently, and reliably mount and demount a member to be held. SOLUTION: A fastening device comprises an elongated fastening tool 48 having a shaft part 60 provided at one part end with a drive structure 64 and at the other end with a screw part 68; an expandable nut body 52 engaged with the screw part of a fastening tool, and a hole engageable with a nut body. A nut expanding structure 56 is mounted on a nut body and a fastening tool such that when a fastening tool is rotated and an axially engaged with the nut body, the nut body and the fastening tool are arranged such that the nut body is expanded or spread. A hole to receive an expandable nut body is formed in a work piece. A key groove 78 is provided with width and length enough to contain a key therein. A key 130 is protruded in a hole 116 and the key groove 78 allows expansion of a nut body by coupling with the key groove such that a key blocks rotation of the nut body in a hole.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency release and emergency fastening device having a fastener, an expandable nut body engaged with the fastener, and a hole engageable with the nut body. In particular, it relates to a fastening device used to quickly and easily remove, attach and / or adjust a wheel device of an inline skate, or to quickly and easily remove and attach a non-slip to footwear or the like. .

[0002]

2. Description of the Related Art At present, various tightening devices for mounting a wheel device on an in-line roller skate are used, and these conventional tightening devices are formed on a head, a shaft, and a shaft opposite to the head. And a threaded portion that can be engaged with a corresponding threaded nut.
The chassis or frame portion of the inline skate is structurally provided to hold the plurality of wheel portions in a substantially straight line. Each wheel device is inserted through one side of the frame, passes through a hole formed in the frame, further extends through the central sleeve hole in the wheel device, and through the hole on the opposite side of the frame. It is held on the frame by a fixture. The nut engages the thread of the fastener,
As a result, the wheels are mounted in the correct positions with respect to the frame.

[0003]

One of the problems with conventional tightening devices is for repair or replacement purposes, or for adjusting the wheels to reconfigure or reposition the skate wheels, or It takes time to remove the wheels, for example to provide a "rocking" effect. Ordinary skaters may not mind the time to replace one or more wheel sets, but there are many cases where quick repairs and replacements are important, such as in-line hockey competitions, and Important for initial assembly of the inline skate and repair of the inline skate by the repairman is easy, efficient and reliable wheel removal and replacement.

[0004] Thus, with the increasing popularity of competitions using inline skating, the need for quick, efficient and reliable removal and replacement of wheeling equipment has increased, such as inline skate hockey. Is a sport that is gaining in popularity at both the professional and amateur levels, and there are numerous races across the country where inline skaters compete for distance and time, in which Efficient and reliable removal and replacement of wheel equipment is important. Even recreational in-line skaters may need to change wheel material for repair purposes or to use a different composition of wheel material for the surface to be skated. Speed and efficiency may not be requirements, but being able to repair or replace wheels as quickly and easily as possible is also desirable for recreational skaters.

[0005] Also, recreational amateurs and professional competitors have, for the purpose of shaping, "
If you want to reconfigure inline skating,
It is important for recreational amateurs and professional competitors to have easy to use and secure fastening devices. Traditionally, in-line skates have a shape in which the wheels are generally abutting or abutting a common or skate surface, whereas a "wobble" shape has one or more end wheels. A substantially curved surface is provided displaced from the common surface. The rocking configuration is similar to hockey skating, with the blades of the skate grounded in a slightly convex bow rather than the flat blades used in figure skating. It will be apparent that it would be desirable to reconfigure the in-line skate wheel assembly quickly and easily for use in this manner.

[0006] Another problem of the prior art is that the hardware associated with the fastening device is conventionally provided with a large number of members comprising at least an elongated fastener / shaft and an engaging nut. , These fastening devices remove the wheels,
Having two or more components that must be separated for mounting or adjustment results in lost components and additional time to operate the wheel assembly. Since the nut is not sequestered on the fastener / shaft, the nut will fall off and be lost, requiring the person replacing the wheel set to find another nut to proceed. The desire to have a grooved nut is aggravated by the need to position the nut in the groove to prevent damage to the nut. The problem is complicated by the provision of grooves in the nut in order to align the thread of the fastener through the sleeve hole of the wheel and through the opposite opening of the opposite member of the frame.

An example of a prior art fastening device for use in in-line skating is described in US Pat.
U.S. Patent No. 4,909,523 to Olson on March 20, 1990 and U.S. Patent No. 5,028,058 to Olson on July 2, 1991. September 17, 1991
U.S. Patent No. 5,048,848, issued to Olson et al.
U.S. Pat. No. 5,068,956, issued to Malewicks on Dec. 3, 2013, and US Pat.
Malevics on March 3, 992
Z) is disclosed in U.S. Pat. No. 5,092,614. Malevics (Malewick)
z) The device disclosed in '956 uses a cap that covers the nut and does not require a groove in the nut. However, Maleviks (Malewi
cz) The '956 device requires multiple rotations of the fastener to ensure that the fastener engages the nut.
It is disclosed in each of the above-cited references that the fastener must be rotated multiple times to ensure that the fastener is engaged with the nut.

An anti-skid device for athletic footwear is
Another application where quick, easy and reliable device removal and replacement is required. Athletic footwear antiskids are widely used for various sports activities. For example, antiskids are used in professional and amateur sports, such as soccer, baseball, football, athletics, rugby, to name a few. Changing the antiskid when it is worn or damaged, or changing the antiskid depending on the type of surface used in the stadium,
Needed regularly.

Heretofore, prior art antiskid devices have used a nut body which is embedded in the sole of athletic footwear. The threaded antiskid is driven into the molded nut body. With these antiskid devices,
Sure engagement of the non-slip footwear with the sole is ensured, but such engagement is time consuming.

[0010] With the above-described embodiments of the tightening device for in-line skate wheel devices and the anti-skid device for athletic footwear in mind, a tightening device that improves the speed, efficiency and certainty of removing and replacing fasteners. Obviously, there are many other uses that will benefit from.

A main object of the present invention is to provide a fastening device capable of quickly, efficiently and reliably attaching and detaching a member to be held.

Another object according to the present invention is to provide a fastening device which can be used as a shaft of an inline skate to hold the wheel device in a rotational position with respect to the frame of the inline skate.

Further, another object of the present invention is to
It is an object of the present invention to provide a fastening device capable of quickly, efficiently and surely attaching a slip stopper to footwear.

Still another object of the present invention is to provide a tightening device capable of urgently adjusting a wheel device of an inline skate.

[0015]

SUMMARY OF THE INVENTION Briefly described, the present invention is a new emergency system for efficiently, securely mounting, disengaging and re-mounting members mounted by a tightening device. Regarding the release tightening device, the tightening device according to the present invention has an elongated fastener member having a driving structure at one end and a shaft portion provided with a screw portion at the other end, and the tightening device. Has a nut member that engages with the screw portion of the fastener and is engageable with the wheel hole cover having a circular or polygonal hole. A nut expanding structure is provided on the nut and the fastener, and the nut is expanded and expanded when the fastener rotates and engages. First, the nut is held by the screw portion of the fastener by disengaging the nut expanding structure. The workpiece has a hole for receiving a 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 is capable of engaging the key with the keyway to expand or widen the nut,
Prevent the nut from rotating in the hole. By rotating the fastener about 90 degrees or a quarter turn relative to the nut,
The fastener is engaged with the nut expanding structure of the nut and the outer surface of the nut is forcibly joined and engaged with the inner surface of the hole. Wheels or non-skids can be removed or attached by simply turning the fastener a quarter turn, so the fastening device is:
It is particularly useful for attaching wheel devices to inline skates and for attaching anti-skids to footwear. Especially,
In an inline skate device, the elongated fastener functions as a shaft to hold the wheel device in place. Thus, by rotating the fastening tool by a quarter turn, it is released from engagement with the hole associated with the nut member.
With the expandable nut installed, the fastener / shaft is removable, the wheels are replaced, the fastener / shaft is reinserted, and then the fastener is mounted by a quarter turn.

[0016]

While the present invention is susceptible to embodiments of different shapes, the description of the present invention is believed to be illustrative of the principles of the present invention and is not limited to the invention shown and described herein. With the understanding that this is not the case,
This will be described in detail below.

Referring to FIG. 1, a single roller skate 20 of the type often referred to as an "in-line" roller skate includes a boot portion 24 and a wheel frame 28 mounted on the boot portion 24.
Holds the plurality of wheel devices 30 in a straight line, and further with reference to FIGS. 2 to 7, the wheel frame 28 has a first side rail 32 and a second side rail 36. The side rails 32 and 36 are provided apart from each other and define a groove 40 therebetween.
Each wheel device 30 is held in place in a groove 40 by a fastener / shaft device 44.

The tightening device 44 is provided with a shaft and a structure for engaging and holding the shaft with the first and second side rails 32 and 36. Tool 4
8, an expandable nut body 52, and a fastener 48 and a nut expanding structure 56 of the nut body 52. The fastening tool 48 has a shaft portion 60, and a driving structure 64 is provided at one end thereof, and a screw portion 68 is provided at the other end opposite to the driving structure 64.

The expandable nut body 52 is provided in the form of a single wall structure 72 having two ends 74, 76 forming a keyway 78, the wall structure 72 comprising an outer surface 82 and an inner surface 86. And a screw thread 90 provided on the inner surface 86 thereof.
Engages with the thread 94 of the threaded portion 68 of the fastener 48.
The nut body 52 engages the outer surface 82 with the surface of the hole,
It can be arranged in the hole.

The nut expanding structure 56 includes a shaft 60 of the fastener.
And a nut taper surface 102 at the tip 104 of the nut. The taper surfaces 98 and 102 are formed by engaging the fastener 48 with the nut body 52 with a screw.
It is led to a close position. Continued rotation or engagement of the fastener 48 within the nut body 52 causes the tapered surfaces 98, 102 to engage (see FIGS. 2 and 5).
This will cause the nut body 52 to expand or spread.

The nut body 52 has tapered surfaces 98 and 10
After the contact of 2, the fastener 48 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. The preferred embodiment of the present invention includes a tapered surface 98,1.
02 engages, the fastener 48 rotates about a quarter turn, or about 90 degrees, with respect to the nut body, thereby causing the nut body 52 to rotate.
Have threads 90, 94 dimensioned to be expanded and expanded. The unfolding mechanism of the nut unfolding structure 56, and the forces caused by it, provide a secure attachment of the fastener / shaft device 44 used for articles such as the inline roller skate 20 shown in FIG.

Referring to FIGS. 2 to 7, first, FIG. 2 shows the structure of the wheel device 30 held by the tightening device 44 in the groove 40 between the first and second side rails 32, 36. It is a partial vertical side view. Bush 114
Is provided in the embodiment shown in FIGS. 2 to 7 and, as will be described in more detail below, the bush 114 may be replaced or removed, but the purpose of replacement and adjustment of the wheel device 30 is as follows. For inline roller skates 20
In many models. As shown in FIG. 2, the fastener includes a part of the shaft part 60 in the first shaft hole 1.
12 and extends through the first shaft hole 112 defined by the hole of the bush 114. Nut body 5
2 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 is attached is provided. The details of the bearing device 118 will not be described in detail here, but have a generally known structure.

The outer diameter 120 of the shaft portion 60 is substantially equal to the outer diameter 108 of the unexpanded nut body 52, and is 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 fastener 4
8 through the first shaft hole 112, through the sleeve hole 126, and through the second shaft hole 116.
By inserting it axially into the tightening device 44,
It can be attached to the first and second side rails 32 and 36 through the wheel device 30. This arrangement eliminates the need to threadly engage fasteners 48 with nut body 52, which can be a complex, time consuming, and unreliable process.

Further, the key 130 is connected to the second shaft hole 116.
The key 130 is housed in the key groove 78, and the key 130 is engaged with the key groove 78, so that when the fastener 48 is rotated in the nut body 52, the second side rail is provided. While the nut body 52 is prevented from rotating relative to 36, the nut body 52 is expanded to engage 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.

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 fastener 48 is rotated by 90 degrees with respect to the nut body 52 and urges the taper surface 98 of the fastener so as to engage with the tapered surface 102 of the nut. Since the nut expansion structure 56 is engaged, the expansion and expansion of the nut body 52 causes compression frictional 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, nut body 5
The frictional engagement between the second outer surface 82 and the inner surface of the shaft bore 116 is shown. Other forms of engagement, such as mechanical interlocks, 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.

2 to 4, the drive structure 64 is engaged, and the fastener 48 is displaced by a predetermined amount, for example, 4 When it is rotated one-half turn (about 90 degrees), the outer surface 8 of the nut body 8
2 is engaged with the inner surface of the shaft hole 116, the outward force is released, and when the force is released, the tightening device 44 causes the shaft hole 11.
6, 112, and can be pulled out from the sleeve hole 126 in the axial direction. The withdrawal of the clamping device 44 is illustrated in FIG.

The tightening device 44 is convenient for providing a catching device that minimizes or prevents loss of the member since the nut body 52 is held in the tightening tool 48 by screw engagement. . Further, the fastening device 44 is efficient because it does not need to be screwed each time the fastener 48 is inserted into the wheel frame 28. When using prior art fasteners, the fastener must be inserted through a suitable hole and then the nut body must be threaded from the opposite side. This is time consuming and useless in view of the novel improvements according to the invention.

FIG. 21 shows a variation of the present invention in which the fastener / shaft device 44f can be used in a conventional skate structure as a retrofit device. In the embodiment shown in FIG. 21, the device is constituted by a fastener 48f, a nut 52, and a receiving body 139 for receiving the nut 52, and the receiving body 139 has a hole 141 having a key 130 on the inner surface. While the nut 52 has a keyway 78 as described above.
Is engaged with the hole 141, the flange 143 of the receiver 139 covers the outer side surface 145 of the side rail 36, and the flange 143 positively moves the receiver 139 with respect to the side rail 36. Abut against the fastener 44
f, the receiving body 139 and the bush 144 penetrating the side rail 36 are prevented from being removed in the axial direction.

The shaft portion 60f of the fastening tool 48f is
2 must extend through the shaft hole 117 and project beyond the outer surface 145 of the side rail 36.
17 is longer than the shaft portion 60 of the fastener 48 shown in FIG. Because the shaft projects beyond the side rails 36, the fastening device 44f can be used with conventional bush and wheel devices. It can be configured to be used as a device to be attached later. In this connection, the embodiment shown in FIG. 21 does not require a key formed on the bush. The key in the embodiment of FIG. 21 is in a hole in the receiver 139. A wrench structure is provided on the outer surface 147 of the receiver 139, and can receive and engage a wrench tool. Normally, the fastening device 44f operates in the manner of the fastening device 44 described above. After aligning the key 130 with the key groove 78, the fastener 48f inserts the nut 52 into the receiving member 139, passes through the side wall 33, passes through the shaft hole 117, and passes through the side wall 36.
Is inserted through. By rotating the fastener 48f, the outer surface of the nut 52 is engaged with the inner surface 141 of the receiving body 139, and the nut 52 is expanded.

Referring now to FIG. 8, an additional improvement is shown by adding a spring device 142 to the tightening device 44 of the present invention. Although the spring device or biasing device 142 can be of various configurations, a preferred embodiment of the spring device 142 is a helical coil compression spring shown in FIG. Spring device 14
2 has an outwardly disposed coil that can accommodate the coil in the groove 143 of the side rail 32 when the spring is compressed to assume a nominal side surface. First end 14 of spring device
4 is attached to the shaft portion 60 below the head 64 and holds the spring device 142 as a capture piece of the tightening device 44;
The second end 146 of the spring device is connected to the first side rail 32.
It can be a structure attached to. By attaching the spring device to the fasteners and the side rails, the tightening device 44 becomes a hardware catch for the wheel frame 28.

When the rotation of the fastener is released, the spring device 142 connects the fastening device 44 to the second shaft hole 116 and the shaft hole 117.
The spring constant is designed to be displaced from or removed from the wheel groove by moving the tightening device 44 and holding the tightening device 44 on the wheel frame 28. Becomes The advantage of this capture device is that no components are removed from the wheel frame 28 in normal use. Thus, the use of the spring device 142 in conjunction with the tightening device 44 allows for quick and efficient removal and replacement of the wheels of the wheel frame 28.

FIGS. 9 and 10 show a variant, in which the same constructions as described in FIGS. 1 to 7 are designated by the same reference numerals, and the construction of the variant is, for example, a clamping device 44.
An alphabetic suffix, such as a, is added and indicated by the same reference numeral. 9 and 10, the fastening device 44a is almost the same as the fastening device 44 shown in FIGS. 9 and 10, an annular groove 150 is provided in the shaft portion 60a at a position separated from the head 64.
The first and second shaft holes 112a and 116a are formed of two chambers, an upper chamber 154 and a lower chamber 158. The upper and lower chambers 154, 158 substantially overlap the holes in the first and second side rails 32a, 36a. The overlap portion forms a passage 162 having a small radial dimension. Upper and lower chambers 154, 1 of the second shaft hole 112a
58 has a key 130 sized to engage the keyway 78 of the nut 52.

The variant shown in FIGS. 9 and 10 allows the wheels mounted on the wheel frame 28 to "rock". Swinging allows individual wheels to be adjusted with respect to the frame for various purposes, such as resembling a hockey-type skate surface, or to distribute the load. An example of an oscillating structure illustrated in the prior art is disclosed in U.S. Pat. No. 5,028,058, issued Jul. 2, 1991 to Olson. The swinging 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 flipped 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, but the chambers 154 and 158 are formed as removable bushes as shown in FIGS. 2 to 7 as described above. be able to.

The device disclosed in Olson US Pat. No. 5,028,058 is useful for adjusting wheels, but can be a time consuming and somewhat difficult process. There is. The invention makes it possible to change wheel adjustments quickly and efficiently. In the present invention, the tightening device 44a includes the first shaft hole 116a.
Are inserted through predetermined chambers 154 and 158 of the second shaft hole 112a, and nuts 52 are
Position. The key 130 is engaged with the key groove 78.

As an example, the tightening device 44a is connected to the lower chamber 15
Moving the wheels from 8 to the upper chamber 154 and adjusting the wheels above the frame is an efficient and uncomplicated process. First, when the fastening tool 48a is rotated about a quarter of a turn according to the method described above, the nut expanding structure 56 is rotated.
Is disengaged and the fastener 48 to which the nut 52 is attached is attached.
a is withdrawn in a substantially axial direction (indicated by directional arrow 166), and annular groove 150 is formed in passage 16 of first axial bore 116a.
2 is withdrawn to a point aligned with 2 (see FIG. 10).
The position of the annular groove 150 along the shaft portion 60 is at the position of the length dimension 170 of the nut 52 and the dimension 168 substantially equal to the width 170 of the side rail 36a. Further, the length of the annular groove 150 is slightly larger than the width 170 of the side rail 32a. In this manner, 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.

The clamping device 44a is thus positioned and moves through the passage 162 to the upper chamber 154, aligning the keyway 78 with the key 130 and tightening the fastener 48.
a and the nut 52 in the upper chamber 1 of the second shaft hole 112a.
54. When the nut 52 is located in the upper chamber 154, the fastener 48a will be approximately one quarter
When the nut 52 is rotated and re-engaged with the nut expanding structure 56,
Is expanded to hold the nut 52 of the upper chamber 154.

The fact that the upper chamber 154 is substantially diagonal to the lower chamber 158 is convenient for holding the tightening device 44a of the shaft holes 112a and 116a. For example, the shaft holes 112a and 116a support the tightening device 44a and the wheels held by the tightening device for upward and downward forces. As shown in FIG. 6, the upper and lower chambers 15
No. 4,158 is provided with an inner surface for supporting the tightening device and wheels mounted on the tightening device for upward and downward forces. In addition, lateral forces are clearly and completely supported in at least one direction for each of the upper and lower chambers 154,158. further,
Even a lateral force from each of the upper and lower chambers 154 and 158 toward the passage 162 can be applied to the upper rim 174.
And because the lower rim 178 is associated with the respective passage 162, it is almost fully supported.

The above-described spring device 142 can be configured to be used in the adjustment structure described with reference to FIGS. Indeed, the spring is very applicable to an adjustable configuration to limit the rate of extension of the fastener from the shaft holes 112a, 116a. In order to use the 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. Those skilled in the art using the method of the present invention will be able to determine the required spring constant, for example, to disengage only the nut 52 from the second bore 112a.

FIGS. 11 to 13 show a variant of the nut according to the invention, in which the same structures as those shown and described in the previous figures use the same reference numbers, and the changed structures are, for example, It is shown using an alphabetic suffix, such as nut 52b.

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 keyways 78, 220, 222, and 22.
4 is provided. Similarly, a plurality of keys 13
0, 226, 228, 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 keyways 220, 222, 224 are different from the keyway 78 and do not extend completely through the wall 72 of the nut body 52b. Generally, keys 130, 226, 22
8, 230 have the same dimensions and can be engaged with any keyway. Thus, even though the engagement of the key groove 78 shown in FIG. 13 with the key 130 is the same as that shown in FIG. 6, the nut body 52 b In order to engage, the nut body 52b can be configured to rotate so as to be able to engage with the key in any direction.

The purpose of the plurality of keyways and keys is to be able to insert the nut, position it properly and hold it against rotation with little effort. The nut structure 52 shown in FIGS. 2-7 retains the nut 52 against rotation, but may need to be rotated to position the key 130 in the keyway 78. Thus, FIGS.
3, the keys 130, 226, 228,
If one of the 230 rotates only about 90 degrees,
It can be engaged with one of the keyways 78, 220, 222, 224. The nut body 52b having a plurality of keyways helps to improve the arrangement of the nut in the shaft hole 116b.

Next, FIGS. 14 and 15 show another modification of the present invention.
4 are provided and define a hole 236. The hole 236 is
A hole 116c is defined. In the hole 116c, the nut 5
2 is retained and engaged to engage the side walls 32, 36 and the wheel device 30 to retain the clamping device 44. 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. The spiral coil spring 38 includes a nut 52
Is engaged in the hole 116c and is spirally wound inward itself. When the fastener 60 is rotated by a quarter or about 90 degrees 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 opened tightening device along and through the shaft hole 117 in a substantially axial direction.

The coil spring 238 ensures that the skate user notices that the fail-safe mechanism is provided because the fastening tool 48 projects from the side rail 32. Furthermore, when disengaged from the frame and wheel device 30, the coil spring 238 helps to eject or remove the tightening device 44 from the frame and wheel device 30, and allows the tightening device 44 to be more easily removed.

FIGS. 16 and 17 show another variation of the present invention, which includes a drive end 64e and a ball-like projection disposed on a portion of the shaft 60e of the fastener 48e. A device 244 is provided, and the ball-shaped projection device is constituted by a pushing structure 246, an urging spring 248 and an engaging ball 250, and the pushing structure is constituted by a ball moving portion 252 and a shaft portion 254. The shaft extends into a drive tool groove 256 formed in the drive end 64e of the fastener 48e.

The push-in structure 246 has a structure in which the shaft portion has the push-in hole 2.
In the state extending from 58 to the drive tool groove 256, the pushing hole 25
8, the engaging ball 250 is held in the second hole 260 communicating with the pushing hole 258, and the urging spring 248 is
Are held between the ball moving parts 252 of the pushing holes 258.

The wall of the second hole 260 is tapered inward to hold the engaging ball and prevent the engaging ball from being removed therefrom. When the engagement ball 250 protrudes from the second hole 260, it is engaged with the groove 262 formed in the bush 114. As shown in FIG. 16, the engaging ball 250 determines whether the nut (not shown in FIGS. 16 or 17 but shown in FIGS. 2 to 15) is engaged with the corresponding bush. Regardless, it protrudes into the groove 262 to engage and hold the fastener with the bush 114. In other words, regardless of whether or not the fastener is rotated to expand the nut and the fastener is held in axial alignment with the wheel assembly, the ball-shaped projection device 246 can be tightened. Hold the attachment device. The ball-shaped projection device is provided with a fail-safe mechanism for holding the fastener and preventing the wheels from being removed from the frame.

Referring to FIG. 17, when the ball-shaped projection device is disengaged, the engagement ball 250 is
2, a part thereof can be moved into the pushing hole 258 through the second hole 260, and the engagement ball 250 is disengaged from the groove 262 by displacing the shaft portion 254 in the axial direction. Inserting a tool (not shown for simplicity) into the drive tool slot 256
An axial displacement of the shaft portion occurs. When the tool is inserted, the shaft portion 254 and the ball moving portion 252 compress the urging spring 248, and when the urging spring is compressed, the ball moving portion 252 moves to the left (as shown in FIG. 17). Ball 250 to move through hole 260 in
Through.

When the engagement ball is released, the shaft 60
A slight tilting action acts on the tool used to rotate the e by a quarter, and the shaft portion 60e is moved to the second shaft hole 117.
Hold against. Further, the spring disengagement embodiment of the present invention using the spiral coil spring 238 shown in FIGS. 14 and 15 can be configured to be used in this ball projection device. The engaging ball 250 is
2, the spiral coil spring 238 is disengaged.
Actuate to axially displace the clamping device a sufficient distance to maintain the engagement ball 250 in the disengaged position (shown in FIG. 17).

Next, another embodiment of the present invention will be described. FIGS. 18 to 20 show a non-slip device 182 using the basic structure and method of the tightening device of the present invention. Have been. In FIG. 18, a plurality of anti-skid devices 182 are shown here, which are engaged with a workpiece 186, shown in the form of a sole. The anti-skid device provides for quick, efficient and secure engagement, removal and replacement of the anti-skid.
That is, as shown in FIG. 19, the non-slip device includes a non-slip body 190 and an expanding nut member 52d, and the expanding nut member 52d has a cylindrical outer surface 82 and a through key groove 78d. The non-slip body 190 includes a protruding head portion 194, a shaft having a threaded portion 68d, and a driving structure 64d. Nut expanding structure 56
d is the taper surface 98d of the fastener and the taper surface 1 of the nut.
02d, the sole 186 has a hole 198 and a key 1
It comprises an inner side surface 202 on which 30d is provided. The operation of non-slip is performed according to the method described above. The drive structure 64d shown here is provided with the protruding head 9
Notch 206 formed on the outer surface of
14, and one form of the engagement structure 210 of the annular flange 214 is a cam car (Textron Inc.) manufactured by Textron Inc.
mcar) section is a registered trademark of Torx. Any form of drive structure is acceptable or can be configured to combine to provide additional drive benefits. The annular flange 214 provides an additional surface area at the bottom 218 of the workpiece 186 for force distribution.

As described above, in the non-slip device 182, the key 130d is disposed in the key groove 78d so as to prevent the expansion nut member 52d from rotating.
8 is engaged. When first assembled, the skid rotates one quarter turn, thereby engaging the tapered surfaces 98d and 102d. Furthermore, since the nut member 52d cannot rotate, the screw portion 68d advances,
The engagement of the tapered surfaces 98d and 102d causes the nut member 52d to open and frictionally engage the cylindrical outer surface 82 with the inner surface 202 of the hole 198. With this engagement, the anti-slip device is maintained at the device by a quarter turn.
An emergency release 82 is provided for easy use in attaching and removing the non-slip from the bottom 218.

While the preferred embodiment of the invention has been illustrated and described, it will be appreciated by those skilled in the art that they do not depart from the spirit and scope of the invention as defined by the appended claims.
Obviously, various modifications and variations are possible. The present invention is not limited to the above disclosure.

[Brief description of the drawings]

FIG. 1 is a perspective view of a conventional typical in-line skate showing a boot portion, a frame, and a plurality of wheel devices attached to the frame.

FIG. 2 shows the novel fastening device according to the invention in which the fastener is engaged with an expandable nut to hold the wheel device in the frame of the skate, along the line 2-2 in FIG. 1; Partial enlarged longitudinal side view,

FIG. 3 is an exploded perspective view showing a relationship between a keyway of a nut and a key of a bush, including a partial cross section of the novel fastening device according to the present invention;

FIG. 4 To be pulled out of the wheel device and the frame,
FIG. 7 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.

FIG. 5 is an enlarged partial cross-sectional view of FIG. 2 showing a screw portion of a fastener engaging with a nut;

FIG. 6 shows a state in which the fastener is screw-engaged with the nut.
FIG. 6 is a side view showing the engagement of the nut with the key as viewed from the line 6-6 in FIG. 5;

FIG. 7 shows a corresponding part of the frame, an insertion bush,
Exploded perspective view including a partially enlarged cross section of a fastening device according to the present invention, showing a relationship with the fastening device by the wheel device of FIG.

FIG. 8 is a partially enlarged cross-sectional side view of a supplemental helical nesting spring used to disengage and retain fasteners and nuts to the frame of the inline skate.

FIG. 9 is a perspective view, including a partially enlarged cross-section, of an embodiment according to the present invention used in a “wobble” state for adjusting the wheels of an inline skate;

FIG. 10 shows a state in which the annular groove of the fastener is arranged in the corresponding hole to adjust the position of the associated wheel (indicated by phantom lines), in the state of “swinging” in FIG. 9; Side view of a partially enlarged cross section of the tightening device used,

FIG. 11 is an exploded perspective view, similar to FIG. 7, with a partially enlarged cross section of the fastening device according to the invention, wherein the fastening device uses a nut with four keyways formed on the outer surface;

FIG. 12 includes a partially enlarged cross section of the threaded portion of the fastener engaged with the nut of FIG. 11, showing the location of three keyways engaged by corresponding keys formed in the holes of the bush. Side view,

FIG. 13 is a side view taken along line 13-13 of FIG. 12, showing an arrangement of nuts in which four keyways are engaged with corresponding keys when the fastener is threadedly engaged with the nut;

FIG. 14 shows an engagement shaped fastener and nut in which a spring is spirally wound within a bush, the fastener and nut being disengaged to disengage the nut from the bush. Sometimes, a partially enlarged longitudinal sectional side view of a fitting spring held on one of the bushes to drive against the fastener and the nut,

FIG. 15 shows a state in which the nut and the fastener are disengaged, the spring expands with respect to the nut and the fastener, penetrates the shaft hole, and displaces the nut and the fastener in the axial direction. Enlarged view similar to FIG.

FIG. 16 shows a ball engaged with a groove in a bush and engaged through a shaft hole to retain a fastener and a nut, wherein the fastener is not engaged with the nut or is tightened to the nut. If not, preventing the fastening device from being disengaged from the shaft hole, a partially enlarged longitudinal sectional side view of the ball-shaped projection device of the fastening device according to the present invention,

FIG. 17 is a view similar to FIG. 16, wherein the ball-shaped projection device is operated to disengage the ball from the groove, and the tightening 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 a shoe sole of footwear;

FIG. 19 is an enlarged exploded perspective view of the antiskid of FIG. 18 showing the nut, a screw portion of the antiskid, and a hole provided with a key for receiving the nut and the antiskid;

20 shows the anti-skid device according to the invention, showing the studs and nuts engaging the holes in the sole, 20-20 in FIG. 18;
Side view including a partial cross-section along line 0,

FIG. 21 shows a novel arrangement according to the invention for engaging a fastener with an expandable nut using a receiver located outside of a corresponding side rail to hold a wheel assembly to a frame of a skate. 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]

Reference Signs List 20 inline roller skate (single roller skate) 24 boot part 28 wheel frame 30 plural wheel structures 32 first side frame 36 second side frame 40 groove 44 fastening tool / shaft structure (fastening device) 48 fastening tool 52 Expandable Nut Body 56 Nut Expanding Structure 60 Shaft 64 Drive Structure (Head) 68 Screw 72 One Wall Structure 74, 76 Two Ends 78 Keyway 82 Outer Surface 86 Inner Surface 90, 94 Thread 88, 102 Tapered surface 104 Nut tip 108 Outer diameter 112 First shaft hole 114 Bush 116 Second shaft hole 117 Shaft hole 118 Bearing device 120 Outer diameter 122 Inner diameter 126 Sleeve hole 130 Key 132 First side rail 136 Enlarged head 138 Surface of one side rail 139 Receiver 141 Hole (inner surface) 14 Spring device 143 Flange (groove) 144 Bush (first end of spring device) 145 Outer surface 146 Second end of spring device 150 Annular groove 154 Upper chamber 158 Lower chamber 162 Small radial passage 166 Direction arrow 168 Same dimensions 170 Width of side rail 36a 174 Upper rim 178 Lower rim 182 Non-slip device 186 Work piece 190 Non-slip body 194 Projection head 198 Hole 202 Inner surface 206 Notch 210 Engagement structure 214 Annular flange 218 Bottom (shoe sole) 220, 222 Keyway 226, 228, 230 Plural keys 234 Bush 236 Hole 238 Conical spiral coil spring 244 Ball-shaped projection device 246 Push-in structure 248 Urging spring 250 Engaging ball 252 Ball moving unit 254 Shaft section 56 driving the tool groove 258 push hole 260 second hole 262 groove

Claims (4)

[Claims] A fastener (48) having a drive structure (64) at a first end, a shaft (60) provided with a screw (68) at a second end, and a hole ( 116) having a wall (72) that is positionable and engageable at 116) and defines a hole, said wall having a tip (104) for receiving at least the threaded portion of the fastener;
The inner surface (86) of the wall is formed with a screw (90) for receiving the screw portion of the fastener, the wall having a keyway (78) extending at least partially therethrough. A nut body (52) having defined opposing edges (74, 76); and a nut body (52) for engaging the hole to expand the nut body relative to the edge of the keyway. A fastening device (44) comprising a fastening tool and a nut expanding structure (56) for the nut body. 2. When the screw portion (68) and the screw (90) of the nut body (52) rotate the fastener (48) by about 90 degrees with respect to the nut body, The tightening device (4) according to claim 1, characterized in that it is dimensioned to engage a nut spreading structure (56).
4). 3. A key (1) is provided in said inner surface of said hole (116).
30) to prevent the nut body (52) from rotating when the key rotates the fastener (48) to engage the nut expanding structure (56); The keyway (78) is received in the keyway (78).
(44). 4. A wheel skate (2) for a wheel device (30).
A clamping device (44) for mounting on a 0), wherein said roller skate is provided with spaced first and second side rails (32, 36) defining a groove (40) therebetween. A shaft hole (112, 116) having a frame (28), at least one wheel device having a wheel axle hole (117), wherein the side rails each substantially coincide with one of the corresponding wheel axle holes; A shaft portion (60) having a wheel shaft, a drive structure (64) on one side, and a screw portion (68) on a substantially opposite side of the drive structure.
A wall (72) defining an inner surface (86) and an outer surface (82);
At least one comprises at least one keyway (78) formed in the outer surface of the nut body extending completely through the wall, and a nut body (52) having one end defining a tip, The fastening tool is provided in the shaft hole (1) of the first side rail.
12), extending through the shaft hole of the wheel and disposed at least in close proximity to a second shaft hole (116) of the second side rail, wherein the nut body is disposed in the second shaft hole. For mounting the wheel device (30) to the roller skate (20), wherein the wheel device (30) is arranged in the second shaft hole of the second side rail so as to be engaged with and mounted on an inner surface of the roller skate (20). Clamping device (44).