DE9111099U1 - Protective device, preferably against animal bites, for cables, hoses, cuffs/bellows and similar parts on vehicles and units - Google Patents

Description

G1793 06.09.1991

Applicant: Hans Gneist, 8000 Munich 71

g Pete/ it^pg 0990 Lindau, flennet

Post office 3160 - Tel. 083S2/7a025 TfHe 064374

Protective device, preferably against animal bites, for cables, hoses, sleeves/bellows and similar parts on vehicles and units

Damage to ignition cables, fuel lines, cuffs, etc., e.g. caused by wild animals, especially martens, is usually detected when difficulties arise when starting the engine, or when starting is not possible at all.

In contrast, damage to the cuffs/bellows of the drive shafts remains undiscovered until the vehicle in question has to be taken to the workshop for inspection, for example, and is placed on a lifting platform. After all, which of the many vehicle owners ever lies on their back on the ground to look at their car "from underneath"? Experience shows that there are very few. This is also the reason why damage to the bellows is only discovered late, perhaps too late. Often, it is not enough to just replace the bellows. Most of the time, the precision parts of the joint are so badly damaged by dirt and foreign bodies that the entire drive shaft has to be replaced. The costs for this then result in unexpectedly high bills.

Since the appearance of the "marten plague", the car industry, automobile clubs and private individuals have tried to keep the martens out of the engine compartment by using mechanical barriers, electrical devices and the use of chemicals, or to counteract their desire to bite by deterring them.

In contrast, the innovation has set itself the task of developing a simple, but guaranteed effective protection against marten bites. The problem cannot be solved by declaring war on the martens until they are extinct. The solution is to prevent the bite, i.e. damage and destruction, from the outset. This is where "armoring" the parts that need to be protected helps. One form of "armoring" for all parts with a round cross-section is the tension spring that is familiar to everyone. Due to its metallic hardness, for example stainless steel (V2A), the defensive effect is already present.

The features for the design and attachment of the protective device are shown in the photos and drawings and explained below.

Applicant: Hans Gneist, 8000 Munich /1 G 1793

06.09.1991

L,":üa·-;. " ^v ';.;'- ^r ,'-'-^T)25 Description

Figure I shows the protective device, which consists of a pre-tensioned tension spring (1) with different diameters and which surrounds a bellows (2) from the fastening with a clamp (3) on the shaft (4) to the base of the joint, where it is also fastened by means of a clamp. The pre-tension of the tension spring (V) in the area between the clamps (3) prevents the spring coils from rubbing against each other when the universal joint shaft (4) is rotating, since the angle of deflection changes depending on the condition of the road and the arrangement of the loads. The pre-tension is also necessary when parking on uneven terrain and with different axle loads in order to avoid damage to the protective device.

The protective device shown in Figure II consists of a conical tension spring (5) which has cylindrical windings on its large and small diameters for fastening with clamps (7). The newly designed shaft bellows (6) also allows the arrangement of a simple protective device (5). The clamps (7) are provided with retaining brackets (8). The arrangement on the circumference of the clamp is offset in such a way that the "cling" of the cylindrical spring windings corresponds to the pitch per winding and thus the pre-tension is only effective in the area between the clamps. The height of the bend in the retaining brackets corresponds to the diameter of the spring wire. An elastic coating (9) on the universal joint shaft compensates for diameter tolerances in the cylindrical part of the tension spring.

Figures Ha and lic show the arrangement of the retaining brackets (8), which due to the "claw effect" are offset by the wire thickness = the pitch of a turn. To transfer the clamping force over the entire circumference, the clamp (7) between the retaining brackets (8) is lined with an elastic material (13). The thickness of the elastic material (13) is slightly greater than the material thickness of the retaining bracketsfg) so that the surface pressure is maximally effective between the retaining brackets.

Figure Hb shows the bend of the spring ends towards the shaft center. The bend corresponds to the wire diameter and is snapped into a blind hole on the shaft during assembly. This assembly aid determines the length of the preload and secures the protective device against rotation and axial displacement. The depth of the blind hole is a maximum of 3 mm.

Figure III shows a protective device which was developed for hoses (cables, etc., for example in the engine compartment) with 1 sejarmor (fy) . Depending on the engine type and the design of the coupling piece to the spark plug, the conical transition to large diameters provides sufficient scope for the still existing variety of types. Fastening elements are not required.

Claims (7)

Applicant: Hans Gneist, 8000 Munich 71 G 1793 06.09.1991 Dr.-!ng. Pete?· Ri«t>!ing ÖSSO Lindsu, Huberte IO - h Posti 3160 - Tel. 003^/78025 S c h u t &zgr; a &eegr; s &rgr; r u c h e Telex 05A374 1. Protective device, preferably against animal bites, for cables, hoses, sleeves, bellows and similar parts on vehicles and units, whereby a coil spring (1) is attached around the parts to be protected, for example a bellows (2), which in its external shape corresponds approximately to the part to be protected, characterized in that the helical spring (1) has different diameters (Fig.I). 2. Protection device according to claim 1, characterized in that a helical spring (5) in conical design is arranged around the part to be protected, for example a corrugated bellows (6) (Fig.II). 3. Protection device according to claim 1 and 2, characterized in that several turns are wound at the ends of the coil spring with the same diameter (cylindrical). The length of the cylindrical part results from the band width of the clamp (7) plus 2 spring turns (Fig.II). 4. Protection device according to claims 1, 2 and 3, characterized in that the clamps (7) are provided with retaining brackets (8) at, for example, 3 points on the circumference, the height of the "claw" on the retaining brackets corresponding to the diameter of the spring wire (Fig.II and Fig.Ha). S.Protection device according to claim 2 and 3, characterized in that the ends of the helical spring (5) are angled towards the center of the circle. The angle corresponds to the diameter of the spring wire (Fig.Hb). 6. Protection device according to claim 1 and 2, characterized in that a coil spring (10) is mounted around the part to be protected, for example an ignition cable (11) with coupling piece (12) (Fig.III). 7. Protection device according to claim 4, characterized in that the band of the tension clamp (7) between the retaining brackets (8) is supported by an elastic material (13). The thickness of the elastic support (13) is slightly greater than the thickness of the retaining brackets (8) (Fig.lic).