CA1219889A - Motor vehicle wheel - Google Patents
Motor vehicle wheelInfo
- Publication number
- CA1219889A CA1219889A CA000447219A CA447219A CA1219889A CA 1219889 A CA1219889 A CA 1219889A CA 000447219 A CA000447219 A CA 000447219A CA 447219 A CA447219 A CA 447219A CA 1219889 A CA1219889 A CA 1219889A
- Authority
- CA
- Canada
- Prior art keywords
- motor vehicle
- cover plate
- spoke disk
- vehicle wheel
- cap
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
- B60B7/06—Fastening arrangements therefor
- B60B7/14—Fastening arrangements therefor comprising screw-threaded means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B7/00—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins
- B60B7/04—Wheel cover discs, rings, or the like, for ornamenting, protecting, venting, or obscuring, wholly or in part, the wheel body, rim, hub, or tyre sidewall, e.g. wheel cover discs, wheel cover discs with cooling fins built-up of several main parts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Connection Of Plates (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
MOTOR VEHICLE WHEEL
A vehicle wheel is supposed to be made in such a way that the spoke disk can be produced of light metal - with the safe holding of a hub cap on the spoke disk having to be guranteed. Soiling by oil leaking from the hub zone is also to be prevented. The proposal is made to fasten the cover plate 27 of a hub cap 26 by means of a screw part 28 which by means of an outer thread 38 engages in a central tapped hole 22.
The diameters of the threads are here about 70 mm. Directly in the zone of the bearing surfaces of the head and of the screw part 28 there are pressure and sealing surfaces 32, 42 between head and cover plate 27 as well as sealing surfaces 23, 24, 29, 31 between the cover plate 27 and an extension 21 of the spoke disk 11.
MOTOR VEHICLE WHEEL
A vehicle wheel is supposed to be made in such a way that the spoke disk can be produced of light metal - with the safe holding of a hub cap on the spoke disk having to be guranteed. Soiling by oil leaking from the hub zone is also to be prevented. The proposal is made to fasten the cover plate 27 of a hub cap 26 by means of a screw part 28 which by means of an outer thread 38 engages in a central tapped hole 22.
The diameters of the threads are here about 70 mm. Directly in the zone of the bearing surfaces of the head and of the screw part 28 there are pressure and sealing surfaces 32, 42 between head and cover plate 27 as well as sealing surfaces 23, 24, 29, 31 between the cover plate 27 and an extension 21 of the spoke disk 11.
Description
lZ1~ 9 This invention relates to a motor vehicle wheel.
A vehicle wheel of the type to which the present invention pertains can often be found on French passenger cars.
The spoke disk on such wheels is stamped out of sheet steel and in its center a nut is fastened, the nut having a tapped hole aligned co-axially to the axis of rotation of the wheel. The tapped hole on such known wheels has a diameter of about lOmm. Screwable thereinto is a fastening part for the hub cap, with a hexagonal head of a size corresponding to that of the fastening nuts for fastening the wheel. Thus, the fastening part can be opened at any time by means of the standard wrench and the hub cap can be removed. Thus, the hub cap is not specially protected against theft. Another disadvantage of this well known design is that only the outer edge of the hub cap is pressed against the spoke disk. If oil or grease leaks at the grease cap of the wheel axle - a fact which cannot be avoided entirely - it can penetrate through the tapped hole to the outside of the spoke disk, to be thrown by centrifugal force against the wheel fastening nuts to dirty them and, through an edge gap between the hub cap and the spoke disk toward the outside. This latter area, located toward the perimeter of the spoke disk, can never be kept completely tight, so that traces of oil which leak outward can, when mixed with dirt, cause marks which are very difficult to remove. In the reverse direction, however, the penetration of dirty water from the outside toward the grease cap can not be prevented either, so that here, so-to-speak, there is a circulation system in which a .~r,^ '' mixture of dirt, water and oil will be thrown from the hub zone radially outward.
Moreover, the well-known spoke disks of steel are very limited reyarding optically attractive design.
Therefore, one increasingly goes over to producing spoke disks of light metal which are cast, for instance, of an aluminum alloy. Regarding the design, one has here a relatively free hand so that antique spokes can be imitated. With these designs, the hub cap has been as a continuous one-piece part which is to be clipped to the spoke disk by means of a lock-in connection. Here, the securement is not reliable and especially for these optically very attractive hub caps unauthorized removal is made altogether too easy.
It is therefore the object of the present invention to provide a motor vehicle wheel in which the advantages of production from light metal can be utilized and in which the hub cap - especially the cover plate - is fixed securely on the spoke disk and cannot be removed easily by unauthorized persons.
Furthermore, the fastening screws which are covered by the hub cap, should remain as clean as possible and oil should be prevented from migrating from the hub zone to the outside of the spoke disk. The spoke disk and the hub cap or the cover plate and the screw part are preferably to be designed in an optically attractive manner.
lZ1~38;~
Secure fastening of the hub cap to the spoke disk is especially important if a ventilator is put on as a hub cap, extending disk-like over almost the entire inner surface of the wheel up to the level of the rims, and carrying on its inside radial ribs through which a forced air stream for the cooling of the brakes is brought about. Such ventilators have considerable mass, and for reasons of safety they must be reliably anchored on the spoke disk.
In one broad aspect the present invention relates to a motor vehicle wheel having a spoke disk and a hub cap with the following characteristics: a) the spoke disk is approximately plate-shaped, and in its center there is a central bore which is aligned coaxially to the axis of rotation of the wheel; b) around the axis of rotation, passage holes for the passage of screw bolts are provided for fastening the spoke disk on the axle of a motor vehicle, with the inside of the spoke disk in the mounted state pointing toward the axle of the motor vehicle; c) the hub cap consists of a cover plate having a center bore, and a fastening part which includes a shaft and a head, the fastening part being adapted to pass through the center bore of the cover plate to be fixed by means of its shaft in the bore of the spoke disk and the head having a bearing surface pointing toward the bore of the plate, for bearing against the cover plate in order to hold it firmly on the spoke disk; characterized in that the spoke disk is made of light metal; the central bore of the spoke disk is adapted ~z~ s~
to engage the shaft of said fastening part of said hub cap and has a diameter which is larger than 5 cm; and the cover plate is provided with an annular surface, which upon engagement of said shaft in said central bore of the spoke disk, is pressed against a countersurface formed in the spoke disk.
In a preferred embodiment, the central bore of the spoke disk is a tapped hole, and the shaft of the fastening part is a complementary screw.
The tapped hole provided in the wheel of the present invention is relatively big, so it can be made directly in the light metal of the wheel and no separate metal insert is required for it. Therefore, an altogether more simple production of the spoke disk is possible. The large diameter of the tapped hole also opens up the possibility of pressing the cover plate against the spoke disk directly in the area surrounding the tapped hole, because in this area, a large contact surface is provided.
Moreover, tensional force is transferred from the screw part without considerable radial shifting so that the contact pressure between the head, the cover plate and the spoke disk can be great.
This also promotes the safe fixing of the cover plate on the disk, and brings about the sealing of the hub area. Furthermore, the head of the screw part can be sufficiently large and thereby be designed in a visually very attractive manner. A standard tool cannot be used on this large head and unauthorized removal of the hub cap will therefore be impeded.
`lS'~39 In further aspects of the present invention, especially effective sealing between the screw part, the cover plate and the spoke disk is achieved. Simultaneously, the friction-tightness is increased here with utilization of the wedge principle whereby the reliability of the connection is also improved.
In a further aspect, a collecting space for dirt, which possibly might penetrate from the outside, is formed by an annular groove in the cover plate.
In a further embodiment, an effective pairing of the materials out of which the wheel is made prevents contact corrosion. Also, the present invention is producible in a simple manner with respect to production technique.
In a further aspect of the present invention, there is facilitated, on the one hand, the mounting and demounting of the screw element by means of a special wrench and, on the other hand, this form corresponds to an esthetic demand of our time.
In another aspect it is assured that the cover disk is always aligned in a predetermined rotary position relative to the spoke disk so that the pattern present in the spoke disk can be continued on the outside of the cover plate.
In the following, the invention is explained in detail by means of especially preferred embodiments illustrated in drawings;
Figure 1 shows at a reduced scale a cross-section through a spoke disk according to the invention, with a hub cap put on;
Figure 2 shows a partial view in the direction of the arrow 2 according to Figure l;
Figure 3 shows a partial Pone of Figure 1, enlarged; and Figure 4 shows an illustration corresponding to Figure 3 according to a variation of the invention.
The spoke disk 11 according to Figure 1 and 3 is approximately plate~shaped. On its outer edge 12 a multitude of holes 13 are provided to connect the spoke disk 11 to the wheel rim (not illustrated). The spoke disk 11 has in its outer peripheral zone a multitude of interruptions 14 which give it a spoke-like appearance. In its center there is a center hole or bore 16 which is aligned coaxial to the axis of rotation 17 of the spoke disk 11. This center bore serves in a well-known manner to accommodate, for instance, a grease cap on the axle of a motor vehicle. A circle of passage holes is provided around the axis of rotation 17 (only the passage hole 18 is illustrated). The screw bolts which fasten the spoke disk onto the axle of a motor vehicle pass through these holes 18 - side 19 of the spoke disk 11 pointing, in the mounted state, toward the axle of the motor vehicle. On the opposite side of the passage hole, fastening nuts may be screwed on in a well-known manner.
121~
In its central area, the spoke disk 11 is provided with a sleevelike extension 21 which follows the center hole or bore 16 axially outwardly. Extension 21 has a tapped hole 22 and, following that, a cylindrical recess 23. In a preferred embodiment, center bore 16 has, at its narrowest point, a diameter of about 71mm and it extends in the axial direction over a length of about 26mm. In such an embodiment, the tapped hole 22 has a diameter of about 70mm and extends in the axial direction over a length of about 10mm. Recess 23 is shaped like a step, the innermost surface thereof being countersurface 24. The countersurface 24 ranges from an inside diameter of about 72.5mm to an outside diameter of about 77mm. The cylindrical recess 23 extends in the axial direction over a length of about 3mm.
A hub cap 26, is provided to cover the central area, radially outwardly at least as far as fastening screws which pass through holes 18. The hub cap 26 consists of a cover plate 27 and a screw part 28. The cover plate 27 has a cylindrical extension 29, with an axially inner face forming an annular surface 31 which bears on the countersurface 24. The extension 29 has (in the embodiment being described), an outside diameter of 77 and thereby fits accurately into the recess 23. On its outer surface, axially opposite the annular surface 31, the cover plate 27 is provided with a bevel seat 32 which ranges from an inside diameter of about 72.5mm to an outside diameter of about 80mm with an angle of taper of about 45. The bevel seat 32 is followed radially outward by a transition surface 33, followed by an annular groove 34 directly lZlf"~
inwardly. This is followed radially outwardly by a counterplane surface 36. The counterplane surface 36 is shifted, relative to the transition surface, outwardly by about lmm in the axial direction.
The screw part 28 is made in two parts with an inner part 37 and a cap 39. The inner part 37 is made of plastic and is provided with a shaft with an outer thread 38 which corresponds to the tapped hole 22. The remainder of inner part 37 is the head of the screw part 28, on which is mounted cap 39. The cap 39 and inner part 37 are connected in a formlocking manner with each other and also are glued in an overlapping zone 41.
On the head of screw part 28, adjacent the outer thread 37, there is a bearing surface which is designed as a cone-shaped shell 42. It corresponds to the bevel seat 32 and, in a preferred embodiment, ranges from an inside diameter of about 68mm to an outside diameter of about 82mm. The cone-shaped shell 42, at its outer periphery, is followed by a radial flange 43, the outer edge of the inner surface of which forms an annular plane surface 44 which bears on the counterplane surface 36. Because of the annular groove 34 and the course of the cross-section of the cover plate 27 curved thereby in this zone, the counterplane surface 36 can be somewhat elastic relative to the bevel seat 32. A sealing effect between the plane surface 44 and the counterplane surface 36 is thereby assured.
~Z1~3~
During the screwing of the screw part 28 into the tapped hole 22 by means of the outer thread 38, the cone-shaped shell 42 presses wedgelike against the bevel seat 32 whereby the cover plate 27 made of plastic is somewhat widened in the zone of its cylindrical extension 29. The outer periphery of the cylindrical extension 29 is thereby pressed against the inside wall of the recess 23 and the annular surface 31 is simultaneously pressed against the countersurface 24. This results in excellent sealing and the cover plate 27 is fixed on the spoke disk 11 with high frictional engagement. Moreover, the sealing effect and the fixing of the coverplate in position is increased by a wedge effect between the cone-shaped shell surface 42 and the bevel seat 32. It will also be noted that the tension force of the screw part 28 is transferred without radial shifting since contact between the cone-shaped shell 42 and the bevel seat 32 is made at about the same radial distance as the contact between the annular surface 31 and the countersurface 24. Also, because of the large diameter of the tapped hole 22, the thread engagement is sufficiently loadable and is able to absorb very great tensional forces. The sealing in the zone between the plane surface 44 and the counterplane surface 36 acts as an additional sealing and prevent the penetration of dirt to the principle sealing surface in the zone of the cone-shaped shell 42. Thereby the danger that the principle sealing surface will be damaged by penetrating dirt that causes grooves during tightening is reduced.
In the preferred embodiment, the cap 39 oE the screw part 28 is made of an aluminum alloy and is many-sided on its outside.
Thus, the screw part 28 can be mounted and demounted by a special wrench having a wrench opening of about 82mm. It is important that such a special wrench is not easily on hand, so that removal of the hub cap by unauthorized persons is made quite difficult.
Referring to partial view of Figure 2, the cover plate 27 in a preferred embodiment, conforms to and continues the spoke pattern of the spoke disk 11. In order that the pattern is always put into the conforming position, there is (as shown in Figure 1), anchored on the cover plate 27 a pin 46. Pin 46 protrudes about parallel to the axis of rotation 17 and is shifted radially relative to it. Pin 42 fits into a bore 47 in the spoke disk 11, which bore 47 is located so that when pin 42 is inserted therein the spoke pattern on the disk is aligned with the spoke pattern of the cover plate 27. The spoke disk 11 can be made of an aluminum alloy, likewise the cap 39. The cover disk 27 and the part 37 are expediently made of plastic which because of its capacity to be shaped is favourable with respect to production technique.
Moreover, the use of plastic avoids also the danger of contact corrosion at the contact spots.
The outer edge of the cover plate 27 does not touch the spoke disk 11, so that water possibly present in the hollow space located in between the cover plate 27 and the spoke disk 11 (perspiration water) can get out. Because of the good sealing in 121~
the hub zone, however, oils will not escape here to soil the spoke disk 11 or tire.
The cover plate 27 according to the described embodiment is provided, first of all, as an optical occlusion. As an alternative to it, however, it can be made also to function as a ventilator. The design of a ventilator is known and needs no detailed explanation here. However, it is important, if the cover plate 27 is to be used as a ventilator, that the center zone is made in the form explained above by means of Figure 1. This will assure a firm and reliable hold on the spoke disk 11 by the ventilator, and will also produce the necessary sealing of the hub zone.
The illustration in Figure 4 corresponds greatly to the cut-out shown in Figure 3. However, the area of contact between the cover plate and the spoke disk is somewhat modified. For ease of comparison, the reference numbers used in Figure 4 are simply increased by the factor 10. Following the tapped hole 220 of the spoke disk 110, a countersurface 240 defines a bevel seat on the axially outermost surface of the sleeve-like extension 210. A
corresponding annular surface 310 formed in the cover plate 270 fits it firmly. In comparison to Figure 3, some sharp-edged transitions are thus avoided. Figure 4 also shows a spring ring 281, which is held in a groove 282 before the outer thread 380 of the screw part 280. By this arrangement the screw part 280 and the cover plate 270 are connected with each other so that they cannot become separated easily, and misplaced.
Not illustrated in the drawings, is a variation according to which the head of the screw part 28 which is many-sided on its outside (and may be many sided in area 41, where the cap 39 fits on the inner part 37) is not provided exclusively with planar surfaces. Rather several curved surfaces may be used. For example, the many-sided head of the screw part 28 can be formed as an epicycloid or hypocycloid. If this is done, then unauthorized removal of the hub cap will be impeded to a very great extent, as a custom built, and not merely a non-standard size wrench must be used to remove a head with curved sides.
In place of the pin 46 / hole 47 shift guard drawn in Figure 1, a radially protruding stop cam can be firmly formed onto the extension 21 against which a countercam of the cover plate can be put. Especially if the cover plate is designed as a ventilator, it is recommended to design the countercam in such a way that it reaches over the stop cam in order to prevent turning in either direction.
;
A vehicle wheel of the type to which the present invention pertains can often be found on French passenger cars.
The spoke disk on such wheels is stamped out of sheet steel and in its center a nut is fastened, the nut having a tapped hole aligned co-axially to the axis of rotation of the wheel. The tapped hole on such known wheels has a diameter of about lOmm. Screwable thereinto is a fastening part for the hub cap, with a hexagonal head of a size corresponding to that of the fastening nuts for fastening the wheel. Thus, the fastening part can be opened at any time by means of the standard wrench and the hub cap can be removed. Thus, the hub cap is not specially protected against theft. Another disadvantage of this well known design is that only the outer edge of the hub cap is pressed against the spoke disk. If oil or grease leaks at the grease cap of the wheel axle - a fact which cannot be avoided entirely - it can penetrate through the tapped hole to the outside of the spoke disk, to be thrown by centrifugal force against the wheel fastening nuts to dirty them and, through an edge gap between the hub cap and the spoke disk toward the outside. This latter area, located toward the perimeter of the spoke disk, can never be kept completely tight, so that traces of oil which leak outward can, when mixed with dirt, cause marks which are very difficult to remove. In the reverse direction, however, the penetration of dirty water from the outside toward the grease cap can not be prevented either, so that here, so-to-speak, there is a circulation system in which a .~r,^ '' mixture of dirt, water and oil will be thrown from the hub zone radially outward.
Moreover, the well-known spoke disks of steel are very limited reyarding optically attractive design.
Therefore, one increasingly goes over to producing spoke disks of light metal which are cast, for instance, of an aluminum alloy. Regarding the design, one has here a relatively free hand so that antique spokes can be imitated. With these designs, the hub cap has been as a continuous one-piece part which is to be clipped to the spoke disk by means of a lock-in connection. Here, the securement is not reliable and especially for these optically very attractive hub caps unauthorized removal is made altogether too easy.
It is therefore the object of the present invention to provide a motor vehicle wheel in which the advantages of production from light metal can be utilized and in which the hub cap - especially the cover plate - is fixed securely on the spoke disk and cannot be removed easily by unauthorized persons.
Furthermore, the fastening screws which are covered by the hub cap, should remain as clean as possible and oil should be prevented from migrating from the hub zone to the outside of the spoke disk. The spoke disk and the hub cap or the cover plate and the screw part are preferably to be designed in an optically attractive manner.
lZ1~38;~
Secure fastening of the hub cap to the spoke disk is especially important if a ventilator is put on as a hub cap, extending disk-like over almost the entire inner surface of the wheel up to the level of the rims, and carrying on its inside radial ribs through which a forced air stream for the cooling of the brakes is brought about. Such ventilators have considerable mass, and for reasons of safety they must be reliably anchored on the spoke disk.
In one broad aspect the present invention relates to a motor vehicle wheel having a spoke disk and a hub cap with the following characteristics: a) the spoke disk is approximately plate-shaped, and in its center there is a central bore which is aligned coaxially to the axis of rotation of the wheel; b) around the axis of rotation, passage holes for the passage of screw bolts are provided for fastening the spoke disk on the axle of a motor vehicle, with the inside of the spoke disk in the mounted state pointing toward the axle of the motor vehicle; c) the hub cap consists of a cover plate having a center bore, and a fastening part which includes a shaft and a head, the fastening part being adapted to pass through the center bore of the cover plate to be fixed by means of its shaft in the bore of the spoke disk and the head having a bearing surface pointing toward the bore of the plate, for bearing against the cover plate in order to hold it firmly on the spoke disk; characterized in that the spoke disk is made of light metal; the central bore of the spoke disk is adapted ~z~ s~
to engage the shaft of said fastening part of said hub cap and has a diameter which is larger than 5 cm; and the cover plate is provided with an annular surface, which upon engagement of said shaft in said central bore of the spoke disk, is pressed against a countersurface formed in the spoke disk.
In a preferred embodiment, the central bore of the spoke disk is a tapped hole, and the shaft of the fastening part is a complementary screw.
The tapped hole provided in the wheel of the present invention is relatively big, so it can be made directly in the light metal of the wheel and no separate metal insert is required for it. Therefore, an altogether more simple production of the spoke disk is possible. The large diameter of the tapped hole also opens up the possibility of pressing the cover plate against the spoke disk directly in the area surrounding the tapped hole, because in this area, a large contact surface is provided.
Moreover, tensional force is transferred from the screw part without considerable radial shifting so that the contact pressure between the head, the cover plate and the spoke disk can be great.
This also promotes the safe fixing of the cover plate on the disk, and brings about the sealing of the hub area. Furthermore, the head of the screw part can be sufficiently large and thereby be designed in a visually very attractive manner. A standard tool cannot be used on this large head and unauthorized removal of the hub cap will therefore be impeded.
`lS'~39 In further aspects of the present invention, especially effective sealing between the screw part, the cover plate and the spoke disk is achieved. Simultaneously, the friction-tightness is increased here with utilization of the wedge principle whereby the reliability of the connection is also improved.
In a further aspect, a collecting space for dirt, which possibly might penetrate from the outside, is formed by an annular groove in the cover plate.
In a further embodiment, an effective pairing of the materials out of which the wheel is made prevents contact corrosion. Also, the present invention is producible in a simple manner with respect to production technique.
In a further aspect of the present invention, there is facilitated, on the one hand, the mounting and demounting of the screw element by means of a special wrench and, on the other hand, this form corresponds to an esthetic demand of our time.
In another aspect it is assured that the cover disk is always aligned in a predetermined rotary position relative to the spoke disk so that the pattern present in the spoke disk can be continued on the outside of the cover plate.
In the following, the invention is explained in detail by means of especially preferred embodiments illustrated in drawings;
Figure 1 shows at a reduced scale a cross-section through a spoke disk according to the invention, with a hub cap put on;
Figure 2 shows a partial view in the direction of the arrow 2 according to Figure l;
Figure 3 shows a partial Pone of Figure 1, enlarged; and Figure 4 shows an illustration corresponding to Figure 3 according to a variation of the invention.
The spoke disk 11 according to Figure 1 and 3 is approximately plate~shaped. On its outer edge 12 a multitude of holes 13 are provided to connect the spoke disk 11 to the wheel rim (not illustrated). The spoke disk 11 has in its outer peripheral zone a multitude of interruptions 14 which give it a spoke-like appearance. In its center there is a center hole or bore 16 which is aligned coaxial to the axis of rotation 17 of the spoke disk 11. This center bore serves in a well-known manner to accommodate, for instance, a grease cap on the axle of a motor vehicle. A circle of passage holes is provided around the axis of rotation 17 (only the passage hole 18 is illustrated). The screw bolts which fasten the spoke disk onto the axle of a motor vehicle pass through these holes 18 - side 19 of the spoke disk 11 pointing, in the mounted state, toward the axle of the motor vehicle. On the opposite side of the passage hole, fastening nuts may be screwed on in a well-known manner.
121~
In its central area, the spoke disk 11 is provided with a sleevelike extension 21 which follows the center hole or bore 16 axially outwardly. Extension 21 has a tapped hole 22 and, following that, a cylindrical recess 23. In a preferred embodiment, center bore 16 has, at its narrowest point, a diameter of about 71mm and it extends in the axial direction over a length of about 26mm. In such an embodiment, the tapped hole 22 has a diameter of about 70mm and extends in the axial direction over a length of about 10mm. Recess 23 is shaped like a step, the innermost surface thereof being countersurface 24. The countersurface 24 ranges from an inside diameter of about 72.5mm to an outside diameter of about 77mm. The cylindrical recess 23 extends in the axial direction over a length of about 3mm.
A hub cap 26, is provided to cover the central area, radially outwardly at least as far as fastening screws which pass through holes 18. The hub cap 26 consists of a cover plate 27 and a screw part 28. The cover plate 27 has a cylindrical extension 29, with an axially inner face forming an annular surface 31 which bears on the countersurface 24. The extension 29 has (in the embodiment being described), an outside diameter of 77 and thereby fits accurately into the recess 23. On its outer surface, axially opposite the annular surface 31, the cover plate 27 is provided with a bevel seat 32 which ranges from an inside diameter of about 72.5mm to an outside diameter of about 80mm with an angle of taper of about 45. The bevel seat 32 is followed radially outward by a transition surface 33, followed by an annular groove 34 directly lZlf"~
inwardly. This is followed radially outwardly by a counterplane surface 36. The counterplane surface 36 is shifted, relative to the transition surface, outwardly by about lmm in the axial direction.
The screw part 28 is made in two parts with an inner part 37 and a cap 39. The inner part 37 is made of plastic and is provided with a shaft with an outer thread 38 which corresponds to the tapped hole 22. The remainder of inner part 37 is the head of the screw part 28, on which is mounted cap 39. The cap 39 and inner part 37 are connected in a formlocking manner with each other and also are glued in an overlapping zone 41.
On the head of screw part 28, adjacent the outer thread 37, there is a bearing surface which is designed as a cone-shaped shell 42. It corresponds to the bevel seat 32 and, in a preferred embodiment, ranges from an inside diameter of about 68mm to an outside diameter of about 82mm. The cone-shaped shell 42, at its outer periphery, is followed by a radial flange 43, the outer edge of the inner surface of which forms an annular plane surface 44 which bears on the counterplane surface 36. Because of the annular groove 34 and the course of the cross-section of the cover plate 27 curved thereby in this zone, the counterplane surface 36 can be somewhat elastic relative to the bevel seat 32. A sealing effect between the plane surface 44 and the counterplane surface 36 is thereby assured.
~Z1~3~
During the screwing of the screw part 28 into the tapped hole 22 by means of the outer thread 38, the cone-shaped shell 42 presses wedgelike against the bevel seat 32 whereby the cover plate 27 made of plastic is somewhat widened in the zone of its cylindrical extension 29. The outer periphery of the cylindrical extension 29 is thereby pressed against the inside wall of the recess 23 and the annular surface 31 is simultaneously pressed against the countersurface 24. This results in excellent sealing and the cover plate 27 is fixed on the spoke disk 11 with high frictional engagement. Moreover, the sealing effect and the fixing of the coverplate in position is increased by a wedge effect between the cone-shaped shell surface 42 and the bevel seat 32. It will also be noted that the tension force of the screw part 28 is transferred without radial shifting since contact between the cone-shaped shell 42 and the bevel seat 32 is made at about the same radial distance as the contact between the annular surface 31 and the countersurface 24. Also, because of the large diameter of the tapped hole 22, the thread engagement is sufficiently loadable and is able to absorb very great tensional forces. The sealing in the zone between the plane surface 44 and the counterplane surface 36 acts as an additional sealing and prevent the penetration of dirt to the principle sealing surface in the zone of the cone-shaped shell 42. Thereby the danger that the principle sealing surface will be damaged by penetrating dirt that causes grooves during tightening is reduced.
In the preferred embodiment, the cap 39 oE the screw part 28 is made of an aluminum alloy and is many-sided on its outside.
Thus, the screw part 28 can be mounted and demounted by a special wrench having a wrench opening of about 82mm. It is important that such a special wrench is not easily on hand, so that removal of the hub cap by unauthorized persons is made quite difficult.
Referring to partial view of Figure 2, the cover plate 27 in a preferred embodiment, conforms to and continues the spoke pattern of the spoke disk 11. In order that the pattern is always put into the conforming position, there is (as shown in Figure 1), anchored on the cover plate 27 a pin 46. Pin 46 protrudes about parallel to the axis of rotation 17 and is shifted radially relative to it. Pin 42 fits into a bore 47 in the spoke disk 11, which bore 47 is located so that when pin 42 is inserted therein the spoke pattern on the disk is aligned with the spoke pattern of the cover plate 27. The spoke disk 11 can be made of an aluminum alloy, likewise the cap 39. The cover disk 27 and the part 37 are expediently made of plastic which because of its capacity to be shaped is favourable with respect to production technique.
Moreover, the use of plastic avoids also the danger of contact corrosion at the contact spots.
The outer edge of the cover plate 27 does not touch the spoke disk 11, so that water possibly present in the hollow space located in between the cover plate 27 and the spoke disk 11 (perspiration water) can get out. Because of the good sealing in 121~
the hub zone, however, oils will not escape here to soil the spoke disk 11 or tire.
The cover plate 27 according to the described embodiment is provided, first of all, as an optical occlusion. As an alternative to it, however, it can be made also to function as a ventilator. The design of a ventilator is known and needs no detailed explanation here. However, it is important, if the cover plate 27 is to be used as a ventilator, that the center zone is made in the form explained above by means of Figure 1. This will assure a firm and reliable hold on the spoke disk 11 by the ventilator, and will also produce the necessary sealing of the hub zone.
The illustration in Figure 4 corresponds greatly to the cut-out shown in Figure 3. However, the area of contact between the cover plate and the spoke disk is somewhat modified. For ease of comparison, the reference numbers used in Figure 4 are simply increased by the factor 10. Following the tapped hole 220 of the spoke disk 110, a countersurface 240 defines a bevel seat on the axially outermost surface of the sleeve-like extension 210. A
corresponding annular surface 310 formed in the cover plate 270 fits it firmly. In comparison to Figure 3, some sharp-edged transitions are thus avoided. Figure 4 also shows a spring ring 281, which is held in a groove 282 before the outer thread 380 of the screw part 280. By this arrangement the screw part 280 and the cover plate 270 are connected with each other so that they cannot become separated easily, and misplaced.
Not illustrated in the drawings, is a variation according to which the head of the screw part 28 which is many-sided on its outside (and may be many sided in area 41, where the cap 39 fits on the inner part 37) is not provided exclusively with planar surfaces. Rather several curved surfaces may be used. For example, the many-sided head of the screw part 28 can be formed as an epicycloid or hypocycloid. If this is done, then unauthorized removal of the hub cap will be impeded to a very great extent, as a custom built, and not merely a non-standard size wrench must be used to remove a head with curved sides.
In place of the pin 46 / hole 47 shift guard drawn in Figure 1, a radially protruding stop cam can be firmly formed onto the extension 21 against which a countercam of the cover plate can be put. Especially if the cover plate is designed as a ventilator, it is recommended to design the countercam in such a way that it reaches over the stop cam in order to prevent turning in either direction.
;
Claims (18)
1. Motor vehicle wheel having a spoke disk and a hub cap with the following characteristics:
a) the spoke disk is approximately plate-shaped, and in its center there is a central bore which is aligned coaxially to the axis of rotation of the wheel;
b) around the axis of rotation, passage holes for the passage of screw bolts are provided for fastening the spoke disk on the axle of a motor vehicle, with the inside of the spoke disk in the mounted state pointing toward the axle of the motor vehicle;
c) the hub cap consists of a cover plate having a center bore, and a fastening part which includes a shaft and a head, the fastening part being adapted to pass through the center bore of the cover plate to be fixed by means of its shaft in the bore of the spoke disk and the head having a bearing surface pointing toward the bore of the plate, for bearing against the cover plate in order to hold it firmly on the spoke disk;
characterized in that the spoke disk (11, 110) is made of light metal; the central bore (22, 220) of the spoke disk (11, 110) is adapted to engage the shaft of said fastening part of said hub cap and has a diameter which is larger than 5 cm; and the cover plate is provided with an annular surface (31,310), which upon engagement of said shaft in said central bore of the spoke disk, is pressed against a countersurface (24, 240) formed in the spoke disk.
a) the spoke disk is approximately plate-shaped, and in its center there is a central bore which is aligned coaxially to the axis of rotation of the wheel;
b) around the axis of rotation, passage holes for the passage of screw bolts are provided for fastening the spoke disk on the axle of a motor vehicle, with the inside of the spoke disk in the mounted state pointing toward the axle of the motor vehicle;
c) the hub cap consists of a cover plate having a center bore, and a fastening part which includes a shaft and a head, the fastening part being adapted to pass through the center bore of the cover plate to be fixed by means of its shaft in the bore of the spoke disk and the head having a bearing surface pointing toward the bore of the plate, for bearing against the cover plate in order to hold it firmly on the spoke disk;
characterized in that the spoke disk (11, 110) is made of light metal; the central bore (22, 220) of the spoke disk (11, 110) is adapted to engage the shaft of said fastening part of said hub cap and has a diameter which is larger than 5 cm; and the cover plate is provided with an annular surface (31,310), which upon engagement of said shaft in said central bore of the spoke disk, is pressed against a countersurface (24, 240) formed in the spoke disk.
2. Motor vehicle wheel as defined in Claim 1, characterized in that the central bore of the spoke disk is made as a tapped hole (22,220) and the shaft of the fastening part of the hub cap is a screw part (28,280) with an outer thread (38,380).
3. Motor vehicle wheel as defined in Claim 2, characterized in that the bearing surface of the head of the fastening part of the hub cap has a cone-shaped shell surface, and the cover plate (27) is provided with a corresponding bevel seat (32) for surface to surface engagement therewith, said annular surface (31 310) and said bevel seat (32) of said cover plate being at substantially the same radial distance from the axis of rotation of the wheel.
4. Motor vehicle wheel as defined in Claim 2, characterized in that the annular surface (31) of the cover plate is the front surface of a substantially cylindrical extension (29) of the cover plate (27) and that the countersurface (24) of the spoke disk is a step formed by a cylindrical recess (23) in the spoke disk coaxial to the tapped hole (22) of the spoke disk (11), said extension (29) being capable of fitting into the recess (23).
5. Motor vehicle wheel as defined in Claim 3, characterized in that said annular surface (310) of said cover plate and the countersurface (240) of said spoke disk are bevel seats.
6. Motor vehicle wheel as defined in Claim 3, characterized in that the bearing surface of the head of the fastening part of the hub cap comprises a cone-shaped shell (42) and an annular plane surface (44) extending radially outwardly therefrom normal to the axis of rotation (17), with an annular zone, in which no contact takes place between the head and the cover plate, existing between the cone-shaped shell surface (42) and the plane surface (44).
7. Motor vehicle wheel as defined in Claim 6, characterized in that there is a counterplane surface (36) on the cover plate corresponding to the plane surface (44) of the head, and radially inward of the counterplane surface there is an annular groove (34), followed by a transition surface (33) which is shifted axially inwardly relative to the counterplane surface (36) and is followed by the bevel seat (32).
8. Motor vehicle wheel as defined in Claim 5, 6 or 7 characterized by the fact that the spoke disk (11) is made of an aluminum alloy and the cover plate (27) is made of plastic.
9. Motor vehicle wheel as defined in Claim 5, 6 or 7 characterized by the fact that the screw part (28) is made in two parts, an axially inner, threaded part (37) made of plastic and having the bearing surfaces belonging to the shaft and to the head and an axially outer part which is a cap (39).
10. Motor vehicle wheel as defined in Claim 5, 6 or 7 characterized by the fact that the screw part (28) is made in two parts, an axially inner, threaded part (37) made of plastic and having the bearing surfaces belonging to the shaft and to the head and an axially outer part which is a cap (39) made of aluminum alloy.
11. Motor vehicle wheel as defined in Claim 5, 6 or 7 characterized by the fact that the screw part (28) is made in two parts, an axially inner, threaded part (37) made of plastic and having the bearing surfaces belonging to the shaft and to the head and an axially outer part which is a cap (39) made of aluminum alloy, said cap being many sided on the outside.
12. Motor vehicle wheel as defined in Claim 5, 6 or 7 characterized by the fact that the screw part (28) is made in two parts, an axially inner, threaded part (37) made of plastic and having the bearing surfaces belonging to the shaft and to the head and an axially outer part which is a cap (39) made of aluminum alloy said cap being many sided on the outside and on the inside.
13. Motor vehicle wheel as defined in Claim 5, 6 or 7 characterized by the fact that the screw part (28) is made in two parts, an axially inner, threaded part (37) made of plastic and having the bearing surfaces belonging to the shaft and to the head and an axially outer part which is a cap (39) made of aluminum alloy said cap having several curved sides capable of being gripped by a complimentary shaped tool.
14. Motor vehicle wheel as defined in Claim 1, characterized by the fact that on the cover plate (27) there is anchored a pin (46) which protrudes inwardly parallel to the axis of rotation of the wheel (17) and radially shifted relative to it and which fits into a measured hole (47) in the spoke disk (11).
15. Motor vehicle wheel as defined in Claim 1, characterized by the fact that the spoke disk has a stop cam which is arranged radially shifted relative to the axis of rotation and to which a countercam of the cover plate can be put at least on one side in order to prevent a mutual relative turning.
16. Motor vehicle wheel as defined in Claim 7, characterized in that:
i) the diameters of the tapped hole (22) and of the outer thread (38) on the shaft measure about 70 mm;
ii) the annular surface (31) and the countersurface (24) range from an inside diameter of about 72.5 mm to an outside diameter of 77 mm, the cone-shaped shell (42) and the bevel seat (32) range from an inside diameter of about 69 - 72.5 nun to an outside diameter of about 80 -82 mm with an angle of taper of about 45°;
iii) the plane surface (44) and the counterplane surface (36) range from an inside diameter of about 97 mm to an outside diameter of about 99 mm.
i) the diameters of the tapped hole (22) and of the outer thread (38) on the shaft measure about 70 mm;
ii) the annular surface (31) and the countersurface (24) range from an inside diameter of about 72.5 mm to an outside diameter of 77 mm, the cone-shaped shell (42) and the bevel seat (32) range from an inside diameter of about 69 - 72.5 nun to an outside diameter of about 80 -82 mm with an angle of taper of about 45°;
iii) the plane surface (44) and the counterplane surface (36) range from an inside diameter of about 97 mm to an outside diameter of about 99 mm.
17. Motor vehicle wheel as defined in Claim 16, characterized in that:
iv) the tapped hole (22) and the outer thread (38) on the shaft extend in the axial direction over a length of about 10 mm;
v) the cylindrical recess (23) extends in the axial direction over about 3 mm while the cylindrical extension (29) extends over an axial length of more than 3 mm;
vi) the counterplane surface and the transition surface (33) are shifted by about 2 mm relative to each other in the axial direction.
iv) the tapped hole (22) and the outer thread (38) on the shaft extend in the axial direction over a length of about 10 mm;
v) the cylindrical recess (23) extends in the axial direction over about 3 mm while the cylindrical extension (29) extends over an axial length of more than 3 mm;
vi) the counterplane surface and the transition surface (33) are shifted by about 2 mm relative to each other in the axial direction.
18. A motor vehicle wheel as described in Claim 4, 5 or 6, characterized in that said screw part, between its screw portion and its cone-shaped shell, is provided with a retaining ring which, when said screw part is unscrewed from said spoke disk, bears against an inwardly directed surface of said cover plate, to retain said screw part in the central bore of said cover plate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP83105259.2 | 1983-05-27 | ||
| EP83105259A EP0128224B1 (en) | 1983-05-27 | 1983-05-27 | Vehicle wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1219889A true CA1219889A (en) | 1987-03-31 |
Family
ID=8190491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000447219A Expired CA1219889A (en) | 1983-05-27 | 1984-02-10 | Motor vehicle wheel |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | USRE32903E (en) |
| JP (1) | JPS59227501A (en) |
| AT (1) | ATE26675T1 (en) |
| AU (1) | AU568349B2 (en) |
| CA (1) | CA1219889A (en) |
| DE (1) | DE3371056D1 (en) |
| HK (1) | HK32590A (en) |
| SG (1) | SG49588G (en) |
| ZA (1) | ZA841071B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5096264A (en) * | 1989-08-31 | 1992-03-17 | Masakazu Hayashi | Double disk construction for automobile wheels of light alloy |
| DE60103367T2 (en) * | 2000-02-09 | 2005-06-02 | Davis-Standard Corp., Pawcatuck | METHOD FOR OPERATING A TEMPERATURE CONTROLLER WITH A STABLE TEMPERATURE RESET |
| US6758531B1 (en) * | 2003-05-10 | 2004-07-06 | Skf Usa Inc. | Hub and hubcap |
| US20080127691A1 (en) * | 2006-11-30 | 2008-06-05 | Thomas Castillo | Anti-theft device |
| CN102092235B (en) * | 2011-01-04 | 2012-07-04 | 安徽福马车桥有限公司 | Automobile front-axle wheel hub sealing device |
| EP2900485B1 (en) * | 2012-09-27 | 2019-11-06 | East Scandic A/S | A combination of a wheel center cap and a hub centering ring |
| US9321304B2 (en) * | 2014-07-18 | 2016-04-26 | Consolidated Metco, Inc. | Tractor/trailer wheel cover |
| US10703132B2 (en) | 2017-09-22 | 2020-07-07 | Consolidated Metco, Inc. | Wheel cover |
| US11667151B2 (en) | 2019-03-01 | 2023-06-06 | Consolidated Metco, Inc. | Wheel cover |
| DE102019111422A1 (en) * | 2019-05-03 | 2020-11-05 | Bpw Bergische Achsen Kg | Hub cover for a tire inflation device of a vehicle |
| TWI737412B (en) * | 2020-07-17 | 2021-08-21 | 琦玉國際有限公司 | Rim center cover |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR591007A (en) * | 1924-03-01 | 1925-06-26 | Mudguard system applicable to all motor cars | |
| GB245701A (en) * | 1925-10-12 | 1926-01-14 | Adelchi Candellero | Improvements in or relating to vehicle wheels |
| FR640092A (en) * | 1927-08-27 | 1928-07-05 | Abel Paul Francois Dubois | Device for fixing the curved flanges on the removable wheels of motor vehicles |
| GB327315A (en) * | 1929-05-07 | 1930-04-03 | Rycroft Norman | Improvements in or relating to spoke covering discs for vehicle wheels |
| US2282222A (en) * | 1940-06-27 | 1942-05-05 | Charles J Goeske | Motor vehicle wheel |
| US2911260A (en) * | 1952-09-05 | 1959-11-03 | Lyon George Albert | Wheel cover |
| US2906558A (en) * | 1955-06-24 | 1959-09-29 | Gen Motors Corp | Vehicle wheel fastening means |
| US3170733A (en) * | 1963-07-01 | 1965-02-23 | Robert E Lamme | Wheel cover with locking means |
| JPS4966123U (en) * | 1972-09-21 | 1974-06-10 | ||
| US3795997A (en) * | 1973-04-23 | 1974-03-12 | Unitron Corp | Non-rotating wheel cover member |
| US4067621A (en) * | 1976-01-20 | 1978-01-10 | W. R. Grace & Co. | Plastic hub cap |
| US3995461A (en) * | 1976-03-31 | 1976-12-07 | Hudson Kirk P | Wheel lock |
| US4083606A (en) * | 1976-09-10 | 1978-04-11 | Charles Scruggs | Wheel cover locking device |
| JPS54104102A (en) * | 1978-02-01 | 1979-08-16 | Maruka Service | Wheel |
| US4179163A (en) * | 1978-02-06 | 1979-12-18 | Superior Industries International, Inc. | Simulated wire spoke wheel assembly |
| DE3007911C2 (en) * | 1980-03-01 | 1988-04-14 | CENTRA Leichtmetall-Räder GmbH, 6733 Haßloch | Rim for automobile wheels |
| JPS6018963Y2 (en) * | 1980-04-25 | 1985-06-08 | 本田技研工業株式会社 | Wheel cover mounting structure |
| FR2491397A3 (en) * | 1980-10-07 | 1982-04-09 | Eta Beta Spa | Two part rim for motor vehicle wheels - has stainless steel halves with aligning flange and retaining bolts |
| JPS5828939U (en) * | 1981-08-20 | 1983-02-24 | 株式会社佐々木電機製作所 | digital switch |
| DE3233802C2 (en) * | 1982-09-11 | 1989-10-12 | Dieter 6805 Heddesheim Wipperfürth | Removable cover cap, in particular for a motor vehicle wheel |
| DE3233918C2 (en) * | 1982-09-13 | 1986-03-13 | Ats Gmbh | Theft protection for a light alloy vehicle wheel |
| JPH0649401B2 (en) * | 1983-04-12 | 1994-06-29 | 大阪金具株式会社 | Center wheel locking device |
-
1983
- 1983-05-27 AT AT83105259T patent/ATE26675T1/en active
- 1983-05-27 DE DE8383105259T patent/DE3371056D1/en not_active Expired
- 1983-10-29 JP JP58203572A patent/JPS59227501A/en active Granted
-
1984
- 1984-02-10 CA CA000447219A patent/CA1219889A/en not_active Expired
- 1984-03-27 AU AU26115/84A patent/AU568349B2/en not_active Ceased
- 1984-07-14 ZA ZA841071A patent/ZA841071B/en unknown
-
1986
- 1986-11-13 US US06/939,512 patent/USRE32903E/en not_active Expired - Fee Related
-
1988
- 1988-07-21 SG SG49588A patent/SG49588G/en unknown
-
1990
- 1990-04-26 HK HK325/90A patent/HK32590A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| SG49588G (en) | 1990-11-23 |
| AU568349B2 (en) | 1987-12-24 |
| USRE32903E (en) | 1989-04-11 |
| HK32590A (en) | 1990-05-04 |
| JPS59227501A (en) | 1984-12-20 |
| JPH021681B2 (en) | 1990-01-12 |
| AU2611584A (en) | 1984-11-29 |
| ZA841071B (en) | 1984-09-26 |
| DE3371056D1 (en) | 1987-05-27 |
| ATE26675T1 (en) | 1987-05-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |