DE19643499A1 - Air or gas inflatable flexible-bodied car jack for tyre changing - Google Patents

Abstract

A vehicle valve (4) is vulcanised airtight in rubber, rubber fabric or flexible material. The body in the form of a truncated cone (1) or another symmetrical hollow body is inserted to lever the vehicle. Round rubber plates are mounted to the body above and below by clamping or vulcanising. A gas bottle, foot pump or mini-compressor may be used to fill up the pump. A metal or plastics control unit can inflate, held stable and release the gas in the rubber body. A used gas bottle can be replaced through unscrewing the housing, removing the old bottle and replacing with a new one.

Description

The invention relates to a device according to the Preamble of claim 1.

State of the art

For the lifting of motor vehicles (Kfz) today used mechanical jacks that every car enclosed. You have the task of a motor vehicle as far from Raise floor that z. B. allows a tire change becomes. For this it is necessary in the front of every vehicle and / or rear and corresponding on both sides Install devices for attaching the jack. The device is also used to support caravans or mobile homes.

Disadvantages of the prior art

The mechanical jacks require one relatively large amount of space in the vehicle. Because of the mechanical design, the weight is also proportional high.

When using the mechanical jack there is also a number of disadvantages:

• - Mechanical crank work when lifting with z. part considerable effort
• - Special holding devices on the vehicle, because of the Danger of pollution can be partially covered have to
• - Narrow stand, which only tends to tip over superficially secured wheels
• - no application without additional aids sandy, gravel or muddy soils as well snowy ground
• - No use if the holding device is very close to the ground / floor (e.g. after a Accident or after the vehicle slipped.)
• - Different types are required for each vehicle type.

In the case of caravans, they are usually fitted Standing legs with crank drive very difficult. At As a rule, they are not mobile homes at all available. This leads to the car-like suspension unpleasant vibrations when moving in the camper, when the motorhome is parked.

Object of the invention

The object of the invention is to motor vehicles without physical exertion by gas or air pressure so far to raise that at least the lifting height for one Wheel change is easily possible.

Solution to the task

This task is performed by the device with the characteristics of Claim 1 solved.

Advantages of the invention

By using a gas or air pressure yourself expansive rubber body as a lifting device result following advantages:

• - Light weight of the rubber body
• - Small dimensions of the rubber body at rest
• - Easy filling with air or commercially available Gas cartridges, gas cans or gas bottles with Valve connection
• - easy and simple handling without any noteworthy Effort (also suitable for laypersons)
• - usable by physically handicapped people
• - No special lifting devices required on the vehicle
• - The same lifting points can be used as in the workshop be used
• - In an emergency, a small gap around the lifting device is sufficient to use
• - Safe standing due to a wide base
• - Can also be used on difficult soils (e.g. sand, Gravel, mud, clay, snow and ice u. a.)
• - Height adjustable by air or gas pressure  
• - Different loads due to different Volumes and construction types (different geometric bases)
• - in principle suitable for all types of vehicles (same Design type).

B. Description

The innovation relates to a device that can be lifted of loads.

The device is unknown in this form.

The device consists of a rubber body and a Feeding device for gas or air supply. The lifting device is in the normal version Truncated cone. The height is variable, but at least this way high that a tire change is possible.

Without air content, the device can be about 3 cm high be pressed together.

The top cover sheet and the bottom sheet are made of rubber vulcanized the truncated cone.

The truncated cone is vulcanized by a seam.

Variants of this lifting device can be different Have basic shapes (e.g. triangle, square, rectangle, Polygons), different diameters, edge lengths and Heights as well as different body shapes (e.g. cylinders, truncated pyramid).

The variants are dependent on the air consumption and designed for lifting power.

The lifting power is variable. The internal pressure of the lifting device is between 0.5 and 3.5 bar.

The material of the lifting body is made of rubber fabric. After filling the device is a high one Flexural rigidity is given, so that with normal securing the vehicle (e.g. by handbrake or stone) falling over is impossible. The rub resistance of the rubber compound supports this effect.

The wide, slightly concave under and under Surface (top and bottom plate) is when lifting planed or automatically adjusts bumps both in the car and in the underground. This is a Can also be used in difficult terrain.

The feed device for air or gas is connected to an in vulcanized automotive valve connected. This also serves to deflate the air or the gas.  

version 1

The following are commercially available for generating compressed air Devices provided:

• - air pump
• - foot pump
• - Mini compressor for connection to the car cigarette lighter
• - Hobby or workshop compressor

Variant 2

The connection is via an additional bracket Gas cartridge, a gas can or gas bottle with Car valve connection possible.

When the lifting body is filled with gas, a Feed piece on the screw connection of the motor vehicle valve screwed on. A controller controls the supply and that Drain the propellant.

A holder for a gas cartridge is attached to the feed piece screwed on gastight with an internal thread. The bracket has the purpose of being a commercial one Take up the gas cartridge. While screwing in the locked entrance of the gas cartridge by a screwed open mandrel so that the propellant gas up to Regulator can flow.

A new cartridge is used for each application. The regulator inflates the lifting device, as well as releasing the gas.

Variant 3

In a third variant, gas is supplied or compressed air using a gas can, gas bottle or a compressed air device that is directly connected to the vehicle valve is connected.

The device can be used flexibly and stationary.  

Description of the Drawings Fig. 1 and 2

Title:
Air or gas powered car jack.

Description of Figs. 1 and 2

An embodiment of the invention is in the accompanying drawings and is shown in following described in more detail.

Show it:

Fig. 1 shows a cross section and the top view of the rubber fabric body in the inflated state and

Fig. 2 shows a cross section through the supply device for gas cartridges.

The device consists of a rubber fabric body 1 and a motor vehicle valve 4 for the gas or air supply.

The standard version of the device corresponds to a truncated cone. The upper cover sheet 2 and the bottom sheet 3 made of rubber fabric are vulcanized into the cone jacket 1 . The cone jacket 1 is formed in that a rubber fabric part is shaped according to the truncated cone circumference, glued or vulcanized to a longitudinal seam and to the top and bottom sheets.

The motor vehicle valve 4 is glued into the cylinder.

The height is variable, but at least so high that a Tire change is made possible. The amount is within the Total height variable with the help of air or gas pressure adjustable.

Without air or gas content, the device can expand to approx. 3 cm Height pressed together.

The ratio of the bottom and cover sheet diameter is between 1.5: 1 and 2.5: 1.

The ratio of bottom sheet to height is between 1: 1 to 1: 1.5.  

The feed device 5 instead of the motor vehicle valve 4 in variant 2 with gas cartridge filling consists of the following parts (see FIG. 2):
The inside of the nipple 7 is glued into the wall 6 of the lifting device 1 . A pressure-resistant connecting hose 9 is connected to the outer part of the nipple 8 with the aid of a hose clamp 10 .

At the other end of the hose, the gas hose is connected to a nipple 13 with an external thread by means of the hose clamp 11 . The external thread 12 is screwed to the controller 14 . The commercially available controller 14 allows the feeding device to be opened and closed. On the right side of the controller 14 , the holder 17 for the gas cartridge 18 is screwed on with the aid of an external thread 15 . When the holder 17 is screwed in, the mandrel 16 opens the tip of the gas cartridge 18 and thus releases the supply of the gas to the regulator.

The lifting device can then be inflated by actuating the regulator 14 . To release the gas, the gas cartridge 18 is removed by unscrewing the holder 17 . The gas can then be released by opening the regulator 14 . Then the lifting device can be pulled out from under the motor vehicle and compressed again.

Claims (16)

1. Device for lifting vehicles in the sense of a jack, characterized in that a body made of rubber, rubber fabric or flexible plastic is inflatable by air or gas pressure. 2. Device according to claim 1, characterized in that a Automotive valve gas-tight in rubber, rubber fabric or flexible Plastic is vulcanized. 3. Device according to one of the preceding claims, characterized characterized in that the body as a truncated cone (cf. Sketch view A) or other symmetrical Hollow body (cylinder, truncated pyramid, triangular, square, rectangular or polygonal layout) is used for lifting motor vehicles. 4. Device according to one of the preceding claims, characterized characterized that the body by vulcanizing is created. 5. Device according to one of the preceding claims, characterized characterized that round on top and bottom of the body Rubber plates are applied by means of Vulcanization or adhesive bonded and sealed (see sketch view A). 6. Device according to one of the preceding claims, characterized characterized in that an air pressure pump, a Air foot pump, a mini compressor or a stationary one Compressed air generating device is used for inflation. 7. Apparatus according to claim 6, characterized in that at Using a compressed air generating device the lifting height is regulated by increasing air pressure. 8. Device according to one of the preceding claims, characterized characterized in that a commercially available gas cartridge for Inflation is used. 9. Device according to one of the preceding claims, characterized characterized in that a commercial gas can or bottle is used for inflation.   10. Device according to one of the preceding claims, characterized in that the rubber body is inflated by means of a regulator made of metal or plastic, kept stable and the gas can be released again
11. Device according to one of the preceding claims, characterized in that after changing a used gas cartridge by unscrewing the holder, a new use by a new gas cartridge is possible. 12. Device according to one of the preceding claims, characterized characterized in that a gas can instead of the gas cartridge bottle or bottle is used. 13. Device according to one of the preceding claims, characterized in that the gas cartridge is opened by a mandrel
14. Device according to one of the preceding claims, characterized in that the feed device consists of metal or plastic. 15. Device according to one of the preceding claims, characterized characterized in that the lifting body made of rubber, rubber fabric or plastic is made. 16. Device according to one of the preceding claims, characterized characterized in that the top and bottom plate made of rubber, Made of rubber fabric, hard rubber or plastic and vulcanized or glued. 17. Device according to one of the preceding claims, characterized characterized that the device after releasing the gas is squeezed. 18. Device according to one of the preceding claims, characterized characterized that it is mobile or stationary is used.