WO1996028228A1 - Locking element for roller skate wheels - Google Patents

Locking element for roller skate wheels Download PDF

Info

Publication number
WO1996028228A1
WO1996028228A1 PCT/EP1996/000830 EP9600830W WO9628228A1 WO 1996028228 A1 WO1996028228 A1 WO 1996028228A1 EP 9600830 W EP9600830 W EP 9600830W WO 9628228 A1 WO9628228 A1 WO 9628228A1
Authority
WO
WIPO (PCT)
Prior art keywords
mushroom
appendix
shaped
head
pin
Prior art date
Application number
PCT/EP1996/000830
Other languages
French (fr)
Inventor
Dino Giusti
Original Assignee
Gi.Di. Meccanica S.R.L.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gi.Di. Meccanica S.R.L. filed Critical Gi.Di. Meccanica S.R.L.
Priority to EP96904864A priority Critical patent/EP0814882A1/en
Priority to AU48806/96A priority patent/AU4880696A/en
Publication of WO1996028228A1 publication Critical patent/WO1996028228A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/04—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs
    • A63C17/06—Roller skates; Skate-boards with wheels arranged otherwise than in two pairs single-track type
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C17/00—Roller skates; Skate-boards
    • A63C17/22—Wheels for roller skates
    • A63C17/226—Wheel mounting, i.e. arrangement connecting wheel and axle mount

Definitions

  • This invention relates to a locking element for roller skate wheels.
  • Known roller skates generally consist of a rigid plastic shoe which extends lowerly into a substantially inverted U- shaped frame for retaining a plurality of longitudinally aligned wheels.
  • the wheels are generally secured to the frame shoulders by pins which after engaging the wheels are locked to the frame by nuts.
  • An object of the invention is to eliminate these drawbacks by providing a locking element which enables a constant predetermined force to be exerted on the wheels retained by the skate frame.
  • a further object of the invention is to provide a locking element which prevents any involuntary self-loosening of the pin.
  • a further object of the invention is to provide a support element which enables the wheel to be easily mounted on and removed from the frame.
  • Figure 1 is a side view of a locking element being applied to a wheel support frame;
  • Figure 2 is a cross-section therethrough;
  • Figure 3 shows a modification thereof;
  • Figure 4 shows a particular blade configuration for simultaneously engaging several wheels
  • Figure 5 shows it applied to the frame
  • Figure 6 is a side view of a modification of embodiment of
  • FIG. 1 Figure 7 is a front view thereof; Figure 8 shows it on completion of insertion; Figure 9 is a front view thereof; Figure 10 shows it in the same view as Figure 3 with different shape of the head of the pin; Figure 11 shows the enlarged particular included in the circonference of Figure 10, before the locking phase; and Figure 12 shows it in the same view as Figure 10 after the locking phase.
  • the locking element according to the invention is applied to a roller skate (not shown on the drawings) provided lowerly with a substantially inverted U-shaped frame 1 for retaining a plurality of longitudinally aligned wheels 2.
  • the locking element comprises a pin 3 provided with a head 4 and a shank 5 comprising at its end a substantially mushroom-shaped appendix 6.
  • the locking element also comprises a bent metal bladed structure 7 substantially of U-shape, consisting of a flat blade 7' connected by a substantially cylindrical portion 8 to a blade 7" which has its central portion 9 slightly arched.
  • the distance between the prongs of the blanded structure 7 is greater than the diameter of the stem 10 of the mushroom-shaped appendix 6 but less than the diameter of the appendix head 11.
  • the locking element of the invention is used in the following manner: after interposing the wheel 2, the pin 3 is inserted through the frame 1 so that the appendix 6 projects from one shoulder 12 of the frame.
  • the bladed structure 7 is then applied, with the concavity of the blade 7" facing the frame shoulder 12, so that the stem 10 of the mushroom-shaped appendix 6 becomes engaged between the prongs of the bladed structure. o avoid ugly projections, the outer lateral surface of the shoulder 12 is provided at the mushroom-shaped appendix of the pins with a recess 13 of suitable dimensions for housing the bladed structure. Further advancement of the bladed structure 7 in a direction perpendicular to the stem 10 of the appendix 6 causes the blade 7" to deform so that it reacts elastically to exert an axial displacement on the pin 3 and consequently an approach of the two shoulders of the U-support. Stability is ensured by the stem 10 passing beyond the dead centre represented by the vertex of the arched portion of the blade 7".
  • the shoulders 12 of the U-shaped support are shaped to form a seat 14 for housing the head of the pin 3 and a cavity 15 for hiding the bladed structure 7 from view.
  • a single blade 16 is provided comprising arched portions 17 at a distance apart corresponding substantially to the distance apart of the pins 3 arranged along the frame shoulders.
  • a slotted hole 18 comprising two portions, one 19 of which is of circular section of diameter slightly greater than the diameter of the head 11 of the mushroom-shaped appendix 6, and the other 20 of which is of elongate form with a width greater than the diameter of the stem 10 of the mushroom-shaped appendix 6 but less than the appendix head 11.
  • This embodiment has the further advantage of simultaneously engaging all the pins, it being possible to simultaneously insert all the heads 11 of the mushroom-shaped appendices 6 into the holes 19 in the blade and then axially slide the blade to engage the appendix heads 11 in the slots 20.
  • the bladed structure 70 is substantially of U-shape with its outer surface 70' comprising two helical inclined portions 22.
  • the head 11 of the mushroom-shaped appendix 6 is of substantially rectangular cross-section.
  • the bladed structure is used by inserting the head 11 of the mushroom-shaped appendix into the rectangular hole provided in the bladed structure and then rotating the pin so that the head rotates along the helical inclined surface portions until it abuts against stops 23 provided on the bladed structure.
  • rotating the pin elastically compresses the bladed structure, with consequent relative axial displacement the pin 3 with respect of the frame 1.
  • the surface of the seat 14, in which the head 4 of the pin 3 houses presents the bottom slightly curved and provided with two semi-cylindrical horizontal recesses 24.
  • the head 4 of the pin 3 presents in its turn two corresponding ribs 25.
  • the locking element in this embodiment is used in the following manner: the blade 7 is inserted into the seat and subsequently the pin 3 is inserted which, after having engaged the wheel, engages its head 6 with the blade 7.
  • the pin is arranged so that the ribs 25 are arranged substantially vertically. Due to a rotation of 90° of the pin, the ribs 25 follow the outline of the curved surface thus causing the consequent approach of the two sprongs of the U-shaped support 1 until they firmly stop in the corresponding recesses 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

A wheel locking element, characterised by comprising a pin (3) to be applied to the shoulders (12) of the support frame (1) for the wheels (2), said pin being provided at one end with a mushroom-shaped appendix (6) at least partly emerging from the frame shoulder, and further comprising an elastically compressible element (7, 17, 70) for engagement below the head of the projecting part of the mushroom-shaped appendix.

Description

Locking element for roller skate wheels
This invention relates to a locking element for roller skate wheels.
Known roller skates generally consist of a rigid plastic shoe which extends lowerly into a substantially inverted U- shaped frame for retaining a plurality of longitudinally aligned wheels.
The wheels are generally secured to the frame shoulders by pins which after engaging the wheels are locked to the frame by nuts.
This fixing system has however certain drawbacks, and in particular:
- a non-predetermined fastening intensity which differs between one wheel and another in that it depends on the sensitivity of the user. The result is that in the case of excessive tightening there is a reduction in the axial clearance of the wheel bearings and hence a loss of rolling performance with consequent bearing heating, whereas in the case of insufficient tightening, vibration arises because of the gyroscopic effect of the wheels,
- the need to provide said pins, screws and/or nuts with constructional expedients such as self-braking inserts, elastic washers, underhead undulated indentations and knurling to prevent self-loosening. These expedients make it even more difficult for the user to tighten with the correct intensity, - a loss of time required for tightening. An object of the invention is to eliminate these drawbacks by providing a locking element which enables a constant predetermined force to be exerted on the wheels retained by the skate frame.
A further object of the invention is to provide a locking element which prevents any involuntary self-loosening of the pin.
A further object of the invention is to provide a support element which enables the wheel to be easily mounted on and removed from the frame. These and further objects which will be apparent from the description are attained according to the invention by a locking element for roller skate wheels as described in claim 1.
The present invention is further described hereinafter with reference to the accompanying drawings, in which:
Figure 1 is a side view of a locking element being applied to a wheel support frame; Figure 2 is a cross-section therethrough; Figure 3 shows a modification thereof;
Figure 4 shows a particular blade configuration for simultaneously engaging several wheels; Figure 5 shows it applied to the frame; Figure 6 is a side view of a modification of embodiment of
Fig. 1; Figure 7 is a front view thereof; Figure 8 shows it on completion of insertion; Figure 9 is a front view thereof; Figure 10 shows it in the same view as Figure 3 with different shape of the head of the pin; Figure 11 shows the enlarged particular included in the circonference of Figure 10, before the locking phase; and Figure 12 shows it in the same view as Figure 10 after the locking phase.
As can be seen from the figures, the locking element according to the invention is applied to a roller skate (not shown on the drawings) provided lowerly with a substantially inverted U-shaped frame 1 for retaining a plurality of longitudinally aligned wheels 2.
Specifically, the locking element comprises a pin 3 provided with a head 4 and a shank 5 comprising at its end a substantially mushroom-shaped appendix 6.
The locking element also comprises a bent metal bladed structure 7 substantially of U-shape, consisting of a flat blade 7' connected by a substantially cylindrical portion 8 to a blade 7" which has its central portion 9 slightly arched.
The distance between the prongs of the blanded structure 7 is greater than the diameter of the stem 10 of the mushroom-shaped appendix 6 but less than the diameter of the appendix head 11.
The locking element of the invention is used in the following manner: after interposing the wheel 2, the pin 3 is inserted through the frame 1 so that the appendix 6 projects from one shoulder 12 of the frame.
The bladed structure 7 is then applied, with the concavity of the blade 7" facing the frame shoulder 12, so that the stem 10 of the mushroom-shaped appendix 6 becomes engaged between the prongs of the bladed structure. o avoid ugly projections, the outer lateral surface of the shoulder 12 is provided at the mushroom-shaped appendix of the pins with a recess 13 of suitable dimensions for housing the bladed structure. Further advancement of the bladed structure 7 in a direction perpendicular to the stem 10 of the appendix 6 causes the blade 7" to deform so that it reacts elastically to exert an axial displacement on the pin 3 and consequently an approach of the two shoulders of the U-support. Stability is ensured by the stem 10 passing beyond the dead centre represented by the vertex of the arched portion of the blade 7".
If the wheel needs to be replaced it is necessary merely to engage the cylindrical portion 8 by a screwdriver tip or another implement, to disengage the bladed structure 7 from the pin.
From the aforegoing it is apparent that the locking element according to the invention has numerous advantages, and in particular:
- a constant defined traction load which is not influenced in any manner by the actions of the operator,
- considerable coupling stability.
In the embodiment shown in Figure 3, the shoulders 12 of the U-shaped support are shaped to form a seat 14 for housing the head of the pin 3 and a cavity 15 for hiding the bladed structure 7 from view.
In the embodiment shown in Figures 4 and 5 a single blade 16 is provided comprising arched portions 17 at a distance apart corresponding substantially to the distance apart of the pins 3 arranged along the frame shoulders.
At each arched portion there is provided a slotted hole 18 comprising two portions, one 19 of which is of circular section of diameter slightly greater than the diameter of the head 11 of the mushroom-shaped appendix 6, and the other 20 of which is of elongate form with a width greater than the diameter of the stem 10 of the mushroom-shaped appendix 6 but less than the appendix head 11.
This embodiment has the further advantage of simultaneously engaging all the pins, it being possible to simultaneously insert all the heads 11 of the mushroom-shaped appendices 6 into the holes 19 in the blade and then axially slide the blade to engage the appendix heads 11 in the slots 20.
In the embodiment shown in Figures 6-9, the bladed structure 70 is substantially of U-shape with its outer surface 70' comprising two helical inclined portions 22. In this embodiment the head 11 of the mushroom-shaped appendix 6 is of substantially rectangular cross-section.
In this embodiment the bladed structure is used by inserting the head 11 of the mushroom-shaped appendix into the rectangular hole provided in the bladed structure and then rotating the pin so that the head rotates along the helical inclined surface portions until it abuts against stops 23 provided on the bladed structure. Again in this embodiment, rotating the pin elastically compresses the bladed structure, with consequent relative axial displacement the pin 3 with respect of the frame 1.
In the embodiment shows in Figures 10-12, the surface of the seat 14, in which the head 4 of the pin 3 houses, presents the bottom slightly curved and provided with two semi-cylindrical horizontal recesses 24. The head 4 of the pin 3 presents in its turn two corresponding ribs 25.
The locking element in this embodiment is used in the following manner: the blade 7 is inserted into the seat and subsequently the pin 3 is inserted which, after having engaged the wheel, engages its head 6 with the blade 7. During the insertion phase the pin is arranged so that the ribs 25 are arranged substantially vertically. Due to a rotation of 90° of the pin, the ribs 25 follow the outline of the curved surface thus causing the consequent approach of the two sprongs of the U-shaped support 1 until they firmly stop in the corresponding recesses 26.

Claims

C L A I M S 1. A wheel locking element, characterised by comprising a pin (3) to be applied to the shoulders (12) of the support frame (1) for the wheels (2), said pin being provided at one end with a mushroom-shaped appendix (6) at least partly emerging from the frame shoulder, and further comprising an elastically compressible element (7,17,70) for engagement below the head of the projecting part of the mushroom-shaped appendix.
2. An element as claimed in claim 1, characterised in that the elastically compressible elment consists of a substantially U-shaped arched bladed structure (7), for engaging between its prongs the projecting part of the mushroom-shaped appendix.
3. An element as claimed in claim 2, characterised in that the bladed structure (7) consists of two facing portions (7',7"), one of which is substantially flat.
4. An element as claimed in claim 1, characterised in that the elastically element consists of a bladed structure (70) , on the surface (70') of which there are provided two helical inclined surface portions (22) for engaging the projecting part of the mushroom-shaped appendix.
5. An element as claimed in claim 2, characterised in that the bladed structure (7) is housed in a corresponding seat (13) provided in the wheel support frame.
6. An element as claimed in claim 1, characterised in that the wheel support frame (1) extends into an appendix comprising a seat (15) for housing the bladed structure (7) .
7. An element as claimed in claim 1, characterised in that the elastically compressible element is provided on a blade (16) comprising a plurality of arched portions (17) at a distance apart corresponding to the distance apart of the wheel pins.
8. An element as claimed in claim 7, characterised in that each arched portion (17) comprises a slotted hole (18) formed in two portions, one (19) of which is of circular section of diameter slightly greater than the diameter of the head (11) of the mushroom-shaped appendix (6) , and the other (20) of which is of elongate form with a width greater than the diameter of the stem (10) of the mushroom-shaped appendix (6) but less than the appendix head (11) .
9. An element as claimed in claim 1 characterised in that the head (4) of the pin (3) is provided with two ribs (25) facing the external surface of the wheel frame (1) , said external surface being substantially arched and provided with two longitudinal recesses (24) for housing the ribs.
PCT/EP1996/000830 1995-03-10 1996-02-29 Locking element for roller skate wheels WO1996028228A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP96904864A EP0814882A1 (en) 1995-03-10 1996-02-29 Locking element for roller skate wheels
AU48806/96A AU4880696A (en) 1995-03-10 1996-02-29 Locking element for roller skate wheels

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVE950006 IT239180Y1 (en) 1995-03-10 1995-03-10 WHEEL CLAMPING ELEMENT IN WHEEL SKATES
ITVE95U000006 1995-03-10

Publications (1)

Publication Number Publication Date
WO1996028228A1 true WO1996028228A1 (en) 1996-09-19

Family

ID=11424071

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000830 WO1996028228A1 (en) 1995-03-10 1996-02-29 Locking element for roller skate wheels

Country Status (4)

Country Link
EP (1) EP0814882A1 (en)
AU (1) AU4880696A (en)
IT (1) IT239180Y1 (en)
WO (1) WO1996028228A1 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1033569B (en) * 1955-01-11 1958-07-03 Eugen Barthalis Dipl Ing Single-track roller skate with more than two rollers arranged one behind the other
US2909375A (en) * 1957-10-09 1959-10-20 Warner Robert Roller skate
DE1073364B (en) * 1960-01-14 Menden Josef Albert (Sauerl.) Roller skate wheel running on ball bearings
FR1448745A (en) * 1964-06-25 1966-03-18 Anti-vibration locking device for connecting panels, at least one of which is removable
FR2333997A1 (en) * 1975-12-01 1977-07-01 Springfix Befestigungstechnik SAFETY PLIERS AGAINST THE AXIAL THRUST FOR FIXING A PART ON A SHAFT
DE9309042U1 (en) * 1993-06-17 1993-08-19 Koerner Andreas Roller skate
EP0617989A2 (en) * 1993-03-24 1994-10-05 ROCES S.r.l. Supporting frame particularly for aligned wheels of skates

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073364B (en) * 1960-01-14 Menden Josef Albert (Sauerl.) Roller skate wheel running on ball bearings
DE1033569B (en) * 1955-01-11 1958-07-03 Eugen Barthalis Dipl Ing Single-track roller skate with more than two rollers arranged one behind the other
US2909375A (en) * 1957-10-09 1959-10-20 Warner Robert Roller skate
FR1448745A (en) * 1964-06-25 1966-03-18 Anti-vibration locking device for connecting panels, at least one of which is removable
FR2333997A1 (en) * 1975-12-01 1977-07-01 Springfix Befestigungstechnik SAFETY PLIERS AGAINST THE AXIAL THRUST FOR FIXING A PART ON A SHAFT
EP0617989A2 (en) * 1993-03-24 1994-10-05 ROCES S.r.l. Supporting frame particularly for aligned wheels of skates
DE9309042U1 (en) * 1993-06-17 1993-08-19 Koerner Andreas Roller skate

Also Published As

Publication number Publication date
EP0814882A1 (en) 1998-01-07
AU4880696A (en) 1996-10-02
ITVE950006U1 (en) 1996-09-10
IT239180Y1 (en) 2001-02-19
ITVE950006V0 (en) 1995-03-10

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