Device for Mounting and Demounting a Tyre; a Method of Preparing a Device for Mounting or Demounting a Tyre

Abstract

A device (1) for mounting and demounting a tyre and a method of preparing a device for mounting or demounting a tyre are proposed, wherein said device (1) has a main body (2) and a bead breaker element (5), said main body (2) having at least one rail (3), with at least one of said rails (3) having at least one lockable running rail (5) arranged thereon, and said bead breaker element comprising a bead breaker blade (10), a bead breaker arm (9), and a lever element (11), and wherein said device (1) comprises at least one support (8, 17), with at least one of the supports (8, 17) being detachably fastenable to at least one running rail (5), which makes it possible for tyres of different wheel types to be demounted from the wheel rim or mounted onto the wheel rim.

Claims

1. A device (1) for mounting and demounting a tyre onto, or from, a rim of a wheel, including a main body (2), said main body (2) having at least one rail (3), with at least one of said rails (3) having at least one lockable running rail (5) arranged thereon, including a bead breaker element (5), said bead breaker element comprising a bead breaker blade (10), a bead breaker arm (9), and a lever element (11), characterised in that said device (1) comprises at least two supports (8, 17), for at least two different types of wheel, respectively, which may be a wheel for a scooter, a touring bike, a motocross bike, a passenger car or the like, with at least one of the supports (8, 17) being detachably fastenable to at least one running rail (5).

2. The device (1) as claimed in claim 1, characterised in that the main body (2) has a centring bar (12) arranged thereon.

3. The device (1) as claimed in claim 1, characterised in that the main body (2) has at least one leg (4) arranged thereon.

4. The device (1) as claimed in claim 3, characterised in that at least one of said legs (4) has an enlarged support surface formed on its end facing away from the main body.

5. The device (1) as claimed in claim 3, characterised in that at least one of the legs (4) has a rubber foot and/or a mandrel.

6. The device (1) as claimed in claim 1, characterised in that at least one of the running rails (5) has a groove (7), with at least one support (8, 17) being insertable into at least one of the grooves (7) by means of a tongue-and-groove connection.

7. The device (1) as claimed in claim 6, characterised in that at least one of the supports (8, 17) can be fastened to at least one of the grooves (7).

8. The device (1) as claimed in claim 1, characterised in that at least one of the supports (17) has a bent head (18).

9. The device (1) as claimed in claim 1, characterised in that the main body (2) and/or the legs (4) are foldable.

10. The device (1) as claimed in claim 1, characterised in that the bead breaker arm (9) is extensible and/or may be inserted into the groove (7) of a running rail (5) via a tongue-and-groove connection.

11. The device (1) as claimed in claim 1, characterised in that the lever element (11) is directly connected to the bead breaker arm (9) or is connected thereto via a joint.

12. The device (1) as claimed in claim 1, characterised in that the main body (2) and/or the centring bar (12) have/has at least one anti-rotation device arranged thereon.

13. A method of preparing a device for mounting or demounting a tyre, said device being a device (1) as claimed in claim 1 and said tyre being, or being supposed to be, arranged on a wheel rim, characterised in that a bead breaker element is fastened to the main body (2) and a suitably dimensioned centring bar (12) is fastened to the main body (2) such that the wheel rim may be positively slid onto the centring bar (12), at least one support (8) is fastened to a running rail (5), and at least one running rail (5) is positioned in such a manner that, as the rim is slid onto the centring bar (12), the rim or the tyre may be placed onto the at least one support (8), or at least one support (17) having a bent head (18) is fastened to the main body (2) and at least one running rail (5) is positioned in such a manner that the rim may be placed onto said at least one support (17), with the tyre being preferably centred above the main body (2) and the bent head (18) of the at least one support (17) holding the tyre fixedly in its centred position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Preferred embodiment examples of the object of the invention are represented in the drawings and will be described hereunder in greater detail. In the drawings:

[0021] FIG. 1 is a schematic representation of an embodiment example of an inventive device,

[0022] FIG. 2 is a schematic representation of an embodiment example of a running rail for an inventive device,

[0023] FIG. 3 is a schematic representation of an embodiment example of a support for an inventive device,

[0024] FIG. 4 is a schematic representation of an embodiment example of a bent support for an inventive device,

[0025] FIG. 5 is a schematic representation of an embodiment example of a support for an inventive device which has been inserted into a running rail,

[0026] FIG. 6 is a schematic representation of an embodiment example of a combination of a bent support and a bead breaker arm and bead breaker blade for an inventive device,

[0027] FIG. 7 is a schematic representation of another embodiment example of an inventive device, equipped for being used with motocross wheels,

[0028] FIG. 8 is a schematic representation of another embodiment example of an inventive device, equipped for being used with scooter wheels, and

[0029] FIG. 9 is a schematic representation of a bead breaker arm for an inventive device including an additional joint.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0030] FIG. 1 shows a schematic representation of an embodiment example of an inventive device 1. The device 1 comprises a main body 2 that has rails 3 ending in legs 4. Running rails 5 are movably arranged along the rails 3 and are held in position on the rail 3 via clamping elements 6. The running rails 5 have each a groove 7 into which the supports 8 are inserted. A bead breaker arm 9 is equally fastened to a running rail 5. The bead breaker arm 9 has a bead breaker blade 10 arranged thereon which can be engaged between the tyre and the wheel rim in order to lever the tyre off the rim. On the upper end of the bead breaker arm 9 the bead breaker blade 10 has a depression provided thereon for accommodating a lever element 11 that engages therewith and serves for exerting pressure on the bead breaker blade 10. In addition, the main body 2 has a centring bar 12 screwed thereon which can accommodate the hub of the wheel rim. Furthermore, the centring bar 12 has a stopper 20 disposed thereon which can press against the rim in order to hold it in position.

[0031] FIG. 2 shows a schematic representation of an embodiment example of a running rail 5 for an inventive device 1. The running rail 5, which can be fastened on a rail 3 by means of a clamping element 6, has a groove 7 that is formed on its top surface and comprises a groove bottom 13 and two groove walls 14. The groove walls 14 have holes 15 provided therein which serve for fastening the support 8 within the groove 7 with the aid of a bolt 21, for example.

[0032] FIG. 3 shows a schematic representation of an embodiment example of a support 8 for an inventive device 1. Like the groove walls 14, the support 8 is equally provided with holes 16 through which a bolt 21 or, alternatively, a split pin may be passed in order to fasten the support 8 to the groove 7.

[0033] FIG. 4 shows a schematic representation of an embodiment example of a bent support 17 for an inventive device 1. The bent support 17 comprises a bent head 18 and is also provided with holes 16, allowing it to be fastened within a groove 7 of a running rail 5. The bent head 18 is pressed against the inner contour of the rim ring in order to hold the rim in a centred position.

[0034] FIG. 5 shows a schematic representation of an embodiment example of a support 8 according to FIG. 3 for an inventive device 1 which is inserted into a running rail 5 according to FIG. 2.

[0035] FIG. 6 shows a schematic representation of an embodiment example of a combination of a bent support 17 and a bead breaker arm 9 including a bead breaker blade 10, to be used in an inventive device 1.

[0036] FIG. 7 shows a schematic representation of another embodiment example of an inventive device 1, equipped for being used with motocross wheels.

[0037] FIG. 8 shows a schematic representation of another embodiment example of an inventive device 1, equipped for being used with scooter wheels. The illustrated embodiment of the inventive device 1 has a smaller centring bar 12 and a taper 19, allowing an improved orientation of the rim.

[0038] FIG. 9 shows a schematic representation of a bead breaker arm 9 for an inventive device 1 including an additional joint 22. The additional joint 22 is arranged on the bead breaker arm in such a manner that a user can utilise the lever element 11 without having to change his or her position since it is sufficient to move the position of the joint 22 in order to be able to exert a maximum force on the bead breaker blade 10.

[0039] All of the characteristics represented herein, as considered either in themselves or in any combination with each other, may be deemed essential to the invention.

LIST OF REFERENCE NUMERALS

[0040] 1 device [0041] 2 main body [0042] 3 rail [0043] 4 leg [0044] 5 running rail [0045] 6 clamping element [0046] 7 groove [0047] 8 support [0048] 9 bead breaker arm [0049] 10 bead breaker blade [0050] 11 lever element [0051] 12 centring bar [0052] 13 groove bottom [0053] 14 groove wall [0054] 15 hole [0055] 16 hole [0056] 17 bent support [0057] 18 bent head [0058] 19 taper [0059] 20 stopper [0060] 21 bolt [0061] 22 joint