Upgrade kit for a roll-bar of a historic single-seater car and upgrade method of a roll-bar of a historic single-seater car

Abstract

An upgrade kit for an original roll-bar of a historic single-seater car, comprising an additional roll-bar with the shape of an inverted U or V and identifying second two ends operatively lower, and wherein each of said second two ends is adapted to be associated with first two ends of said original roll-bar by means of reversible connection means and at least one additional bracing rod adapted to be connected between a vertex of said additional roll-bar and said frame or an engine block of said historic single-seater car; the additional roll-bar being operatively superimposed to said original roll-bar.

Claims

1. An upgrade kit for an original roll-bar (RBO) of a historic single-seater car (MPS), the original roll-bar made by means of a solid or hollow tubular element, bent to generically define an inverted U or V shape, by identifying relative first ends (1, 2) operatively lower and directly connected to a frame of said historic single-seater car, the kit comprising an additional roll-bar (RBA) implemented by a solid or hollow tubular element bent to generically define an inverted U or V shape, by identifying relative second two ends (11, 12) operatively lower, and wherein each of said second two ends is adapted to be associated with said first two ends, by means of; reversible connection means (21, 22, 31, 32), and at least one additional bracing rod (RA1, RA2) adapted to be connected between a vertex (VA) of said additional roll-bar and said frame or an engine block (H) of said historic single-seater car, the additional roll-bar being sized so that, in operating conditions, it is superimposed to said original roll-bar.

2. The kit according to claim 1, wherein each of said second two ends (11, 12) are shaped so as to complementarily join with and adhere on an outer surface of said first two ends.

3. The kit according to claim 2, wherein said second ends are concave, at least for a first extreme portion.

4. The kit according to claim 3, wherein said second ends are adapted to adhere to outer surfaces of said first two ends facing posteriorly and/or laterally or frontally and/or laterally, a longitudinal development (LA) of said historic single-seater car.

5. The kit according to claim 1, wherein said reversible connection means (21, 22, 31, 32) comprise collars adapted to tighten around said first two ends for anchoring said second ends to said original roll-bar or by means of a pin, which is threaded into a complementary threaded hole originally made in the original roll-bar to lift the car.

6. The kit according to claim 5, wherein at least one of said collars is in one piece with a respective end of said second two ends (11, 12).

7. The kit according to claim 1, comprising a pair of additional bracing rods (RA1, RA2) connected between said vertex (VA) of said additional roll-bar and said frame or engine block (H) of said historic single-seater car, and wherein ends of said rods of said pair of additional bracing rods are connected to said frame or engine block at points belonging to a second plane (P2) perpendicular to a longitudinal development (LA) of said historic single-seater car (MPS).

8. The kit according to claim 1, wherein a further pair of bracing rods (RO1, RO2) is connected between a vertex (VO) of said original roll-bar (RBO) and said frame or engine block (H) of said historic single-seater car.

9. The kit according to claim 8, wherein ends of said rods of said further pair of bracing rods are connected to said frame or engine block in points belonging to a first plane (P) perpendicular to a longitudinal development (LA) of said historic single-seater car.

10. The kit according to claim 9, wherein said first plane is interposed between a seat (S) of said single-seater car and said second plane (P2) or wherein said first and said second planes coincide.

11. A method for upgrading a roll-bar of a historic single-seater car comprising a step of associating an additional roll-bar according to claim 1.

12. The method according to claim 11, further comprising a step of interposing a layer of elastomeric material between said connection means (21, 22, 31, 32) and said first ends of said original roll-bar.

13. A single-seater car comprising an original roll-bar (RBO) made by means of a solid or hollow tubular element, bent to generically define an inverted U or V shape, by identifying relative first ends (1, 2) operatively lower and directly connected to a frame of said historic single-seater car, the single-seater car comprises a kit including an additional roll-bar (RBA) implemented by a solid or hollow tubular element bent to generically define an inverted U or V shape, by identifying relative second two ends (11, 12) operatively lower, and wherein each of said second two ends is adapted to be associated with said first two ends, by means of; reversible connection means (21, 22, 31, 32), and at least one additional bracing rod (RA1, RA2) adapted to be connected between a vertex (VA) of said additional roll-bar and said frame or an engine block (H) of said historic single-seater car, the additional roll-bar being sized so that, in operating conditions, it is superimposed to said original roll-bar.

Description

BRIEF DESCRIPTION OF THE FIGURES

(1) Further objects and advantages of the invention will be best understood upon perusal of the following detailed description of an embodiment thereof (and of relative variants) with reference to the accompanying drawings merely showing non-limiting examples, wherein:

(2) FIGS. 1 and 2 show two examples of a roll-bar upgrade kit according to the invention;

(3) FIG. 3 shows a view of a single-seater car implementing a roll-bar upgrade kit according to FIG. 2.

(4) In the figures, the same numbers and the same reference letters indicate the same elements or components.

(5) For the purposes of the invention, the term second component does not imply the presence of a first component. As a matter of fact, these terms are only used as labels to improve clarity and should not be interpreted in a limiting manner.

(6) The elements and features contained in the different preferred embodiments, drawings included, can be combined with one another, without for this reason going beyond the scope of protection of this patent application, as described hereinafter.

DETAILED DESCRIPTION OF EMBODIMENTS

(7) A single-seater car MPS usually comprises four wheels W on the outside of the car body CV, with a central tapered body where one single seat is housed to accommodate the driver.

(8) At the back of the seat there is the internal combustion engine, generically indicated as engine block.

(9) There can also be a front spoiler and/or a rear spoiler to improve the downforce of the car, so as to improve the so-called aerodynamic force.

(10) Between the driver's seat S and the cradle housing the engine block H there is the roll-bar, which projects at the top of the driver's seat so as be above the driver's head. The roll-bar designed and manufactured when the entire single-seater car MPS was produced is hereinafter referred to as original roll-bar RBO, as it is part of the frame of the single-seater car.

(11) The original roll-bar RBO of a historic single-seater car MPS is generally obtained by means of a solid or hollow tubular element, which is bent so as to generically define the shape of an upside-down U or V, thus identifying relative first, operatively lower ends 1, 2, which are directly connected to the frame of the historic single-seater car.

(12) These ends are generally fixed to the frame of the single-seater car in a non-reversible manner.

(13) According to the invention, the kit comprises an additional roll-bar RBA obtained by means of a solid or hollow tubular element, which is bet so as to generically define the shape of an upside-down U or V identifying two second, operatively lower ends 11, 12, wherein each one of said two second ends is adapted to be associated with two first ends of the original roll-bar by means of reversible connection means 21, 22, 31, 32, and at least one additional bracing rod RA1, RA2 adapted to be connected between a vertex VA of the additional roll-bar and said frame or an engine block H of the historic single-seater car.

(14) When the additional roll-bar is operatively associated with the single-seater car, it stands above the original roll-bar.

(15) Each one of the two second ends 11, 12 of the additional roll-bar is shaped so as to be complementary to the two first ends 1 and 2 of the original roll-bar so as to be joined and adhere to a relative outer surface.

(16) In order to improve a mutual adhesion, the second ends are, at least in a first extreme portion, concave with a concavity that is perpendicular to a respective development axis of each end, so that the second ends are adapted to adhere to side surface of said two first first ends facing them at the back and/or on the side or at the front and/or on the side relative to a longitudinal development LA of said historic single-seater car.

(17) In relation to the mutual position between the seat, the original roll-bar and the engine block, the original roll-bar can be fixed to the side surfaces of the first ends 1 and 2 at the front, on the side or at the back and in relative intermediate positions.

(18) FIGS. 1 and 2 clearly show that the second ends 11 and 12 and tangent and adhere to the rear surfaces of the respective first ends 1 and 2 of the original roll-bar.

(19) The reversible connection means 21, 22, 31, 32 comprise collars, which are adapted to be tightened around said two first ends so as to anchor said second ends to said original roll-bar.

(20) One of said collars can be manufactured as one single piece together with a respective end of said two second ends 11, or it can be a separate component relative to the additional roll-bar and be fitted so as to clamp together the ends of the original roll-bar and of the additional roll-bar.

(21) Two pairs of collars are used, so as to have two collars for each pair of ends connected together.

(22) In this way, two mutual connection points are obtained, which ensure an ideal stress distribution between the additional roll-bar and the original roll-bar.

(23) According to FIGS. 1 and 2, a pair of additional bracing rods RA1, RA2 is preferably connected between said vertex VA of said additional roll-bar and said frame or engine block H of said historic single-seater car, and wherein ends of said rods of said pair of additional bracing rods are connected to said frame or engine block in points belonging to a second plane P2, which is perpendicular to a longitudinal development LA of said historic single-seater car MPS.

(24) If it was not originally provided, a further pair of bracing rods RO1, RO2 can be connected between a vertex VO of said original roll-bar RBO and said frame or engine block H of said historic single-seater car.

(25) The ends of the rods of said further pair of bracing rods are connected to said frame or engine block in points belonging to a first plane P1, which is perpendicular to a longitudinal development LA of the historic single-seater car MPS.

(26) The first plane is interposed between a seat S of the single-seater car and the aforesaid second plane P2, see FIG. 2, or the first plane P1 and the second plane P2 coincide.

(27) The invention also relates to a method for upgrading a roll-bar of a historic single-seater car comprising a step of associating an additional roll-bar according to any one of the variants described above. A layer of elastomeric material is preferably interposed between said connection means 21, 22, 31, 32 and the first ends of the original roll-bar.

(28) If they were not originally provided, said further bracing rods RO1, RO2 can be fixed to the original roll-bar by means of another collar or, if present, by means of a hole which was originally intended to lift the entire car through the original roll-bar.

(29) The non-limiting example described above can be subjected to variations, without for this reason going beyond the scope of protection of the invention, comprising all embodiments that, for a person skilled in the art, are equivalent to the content of the claims.

(30) When reading the description above, a skilled person can carry out the subject-matter of the invention without introducing further manufacturing details.