Anti-loosening and anti-tilting spare tire fixing device

Abstract

The utility model belongs to the field of automobile parts, and particularly relates to an anti-loosening and anti-tilting spare tire fixing device. The device comprises a spare tire mounting hook, a spare tire lifting and fixing device body and a special wrench, by arranging the eccentric wheel, the movable fluted disc and the anti-reverse pawl to be matched with the winding steel wire rope, the overload spring cover plate and the overload spring are driven by the driving shaft to form torque during use, and after the torque is larger than a set value, relative movement occurs to achieve overload; and when the size is smaller than that, the spring cover plate sequentially drives the overload spring to move, the eccentric wheel, the driving fluted disc and the steel wire rotating hub to rotate, the steel wire rope is wound into the rotating hub, and the function of lifting the spare tire is achieved. The utility model has the advantages of ingenious design, small occupied space, wide applicable vehicle types, high reliability, high safety, convenience in operation and the like.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts, specifically relating to a spare tire fixing device that prevents loosening and tilting. Background Technology

[0002] Currently, most passenger vehicles use a spare tire mounted in the trunk, but this requires a significant amount of trunk space and is only suitable for small, non-full-size spare tires. With the development of the Chinese passenger vehicle market, users' demand for trunk space is increasing, leading to the emergence of externally mounted spare tires at the rear of the vehicle. This mounting method has some impact on the overall appearance of the vehicle and is only suitable for some SUV models. Existing technology has a high failure rate, is prone to jamming, lacks theft prevention, and is inconvenient to operate. Utility Model Content

[0003] To address the aforementioned problems, this utility model provides a spare tire securing device that is space-saving, applicable to a wide range of vehicle models, highly reliable, safe, and easy to operate. The specific technical solution is as follows:

[0004] A spare tire securing device with anti-loosening and anti-tilting features includes: a spare tire mounting hook for securing the spare tire to the device body; a spare tire lifting and securing device body installed at the bottom of the vehicle body, which provides driving force through an internal drive shaft to lift and lower the spare tire; and a special wrench for rotating the drive wheel to lift and lower the spare tire, and also serving as a wrench for removing wheel nuts. The spare tire securing device body comprises a drive shaft, fixing rivets, an upper cover plate, an overload spring, an overload spring cover plate, an eccentric wheel, a drive gear, an anti-reverse pawl, a wire hub, a housing, a hose, a wire rope, and an anti-tilting bar. The overload spring cover plate, overload spring, eccentric wheel, drive gear, anti-reverse pawl, and wire hub are sequentially connected and arranged within the cavity formed by the upper cover plate and the housing, and secured by the fixing rivets. The drive shaft extends into the cavity, and its exterior has a wrench mating part that engages with one end of the special wrench. One end of the wire rope is set on the wire hub, and the other end extends into the anti-roll bar and is connected to the spare tire mounting hook. The wire rope is wrapped with a flexible hose, and a bend is provided between the anti-roll bar and the flexible hose.

[0005] Furthermore, the wire rope has a slack inside the hose, and the elbow is movably connected to the anti-tilt bar.

[0006] Furthermore, the pawl portion of the anti-reverse pawl engages with the recess on the wire hub to achieve engagement between the anti-reverse pawl in its working and non-working states.

[0007] Furthermore, the spare tire mounting hook is fixed to the spare tire wheel core and is also fixed in conjunction with the anti-roll bar.

[0008] Furthermore, the overload spring cover plate, overload spring, eccentric wheel, drive gear plate, and wire hub are sequentially connected and driven, enabling them to rotate in sequence.

[0009] This utility model effectively solves the technical problems of poor reliability, inconvenient operation, and safety issues in existing spare tire lifting devices. The spare tire fixing device provided by this utility model includes functions such as anti-theft, anti-loosening, anti-overload, and anti-tilting during the spare tire lifting process. Through a structure consisting of an eccentric wheel, a moving gear plate, and an anti-reverse ratchet pawl, combined with a wound steel wire rope, the device operates by having the drive shaft drive the overload spring cover and overload spring to generate torque. When the torque exceeds a set value, relative movement occurs, achieving overload. When the torque is less than a set value, the spring cover plate sequentially drives the overload spring, eccentric wheel, drive gear plate, and steel wire drum to rotate, winding the steel wire rope into the drum and raising the spare tire. This utility model is ingeniously designed and has advantages such as small space occupation, wide applicability to various vehicle models, high reliability, high safety, and convenient operation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the device structure of this utility model;

[0011] Figure 2 for Figure 1 A three-dimensional schematic diagram of part of the spare tire securing device;

[0012] Figure 3 This is a diagram illustrating the perspective of a fixed spare tire.

[0013] Figure 4 Diagram illustrating the operation of the ratchet pawl to prevent reverse rotation;

[0014] Figure 5 Diagram illustrating how the ratchet pawl can malfunction to prevent reverse rotation;

[0015] Figure 6 This is a schematic diagram of the anti-roll bar operation.

[0016] Figure label:

[0017] 10-Spare tire mounting hook, 20-Spare tire fixing device body, 201-Drive shaft, 202-Fixing rivet, 203-Top cover plate, 204-Overload spring, 205-Overload spring cover plate, 206-Eccentric wheel, 207-Drive gear plate, 208-Anti-reverse pawl, 209-Wire rope hub, 2010-Outer shell, 2011-Hose, 2012-Wire rope, 2013-Anti-tilt bar, 30-Special wrench, 40-Spare tire, 50-Spare wheel. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1-6 As shown, this utility model discloses an anti-loosening and anti-tilting spare tire fixing device. The device includes: a spare tire mounting hook 10 for fixing the spare tire to the spare tire fixing device body; a spare tire lifting and fixing device body 20, installed at the bottom of the vehicle body, which provides driving force through an internal drive shaft to lift and lower the spare tire; a special wrench 30 for rotating the drive wheel to lift and lower the spare tire, and also serves as a wrench for removing wheel nuts; the spare tire fixing device body consists of a drive shaft 201, fixing rivets 202, an upper cover plate 203, an overload spring 204, an overload spring cover plate 205, and an eccentric wheel 206. The system comprises a drive gear 207, an anti-reverse pawl 208, a wire hub 209, a housing 2010, a hose 2011, a wire rope 2012, and an anti-tilt bar 2013. The overload spring cover 205, overload spring 204, eccentric wheel 206, drive gear 207, anti-reverse pawl 208, and wire hub 209 are sequentially connected and arranged within the cavity formed by the upper cover 203 and the housing 2010, and are fixed by the fixing rivets 202. The drive shaft 201 extends into the cavity, and its exterior has a wrench-fitting part that mates with one end of the special wrench 30. One end of the wire rope 2012 is mounted on the wire hub 209, and the other end extends into the anti-tilt bar 2013 and connects to the spare tire mounting hook 10. The wire rope 2012 is wrapped with a hose 2011, and a bend is provided between the anti-tilt bar 2013 and the hose 2011.

[0020] The wire rope 2012 has a slack inside the hose 2011, and the elbow is movably connected to the anti-roll bar 2013. The pawl part of the anti-reverse pawl 208 engages with the recess on the wire hub 209 to achieve engagement in the working and non-working states of the anti-reverse pawl 208. The spare tire mounting hook 10 is fixed to the spare tire wheel core and is also fixed in conjunction with the anti-roll bar 2013.

[0021] The overload spring cover 205, overload spring 204, eccentric wheel 206, drive gear 207, and wire hub 209 are sequentially connected and driven to rotate.

[0022] In use, the spare tire fixing device body 20 is fixed to the bottom of the vehicle body. The spare wheel 50, spare tire hook 10, and anti-roll bar 2013 are assembled together. The customer uses a special wrench 30 to extend into the drive shaft 203 from the inside of the vehicle body and rotates the special wrench 30 clockwise. The drive shaft 203 drives the overload spring cover 205. When the torque is greater than 45 NM, the spring cover 205 and the overload spring 204 will move relative to each other. The spring cover 205 cannot drive the overload spring 204 to move, thus realizing the overload function. When the torque is less than 45 NM, no relative displacement will occur. The spring cover 205 drives the overload spring 204 to move, which in turn drives the eccentric wheel 206. The eccentric wheel 206 drives the drive gear 207, which in turn drives the wire rope hub 209 to rotate, winding the wire rope 2012 into the hub, thus realizing the function of raising the spare tire. Conversely, turning the special wrench 30 counterclockwise will lower the spare tire.

[0023] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A spare tire fixing device that prevents loosening and tilting, characterized in that: The device includes a spare tire mounting hook, a spare tire lifting and fixing device body, and a special wrench. The spare tire fixing device body consists of a drive shaft, fixing rivets, an upper cover plate, an overload spring, an overload spring cover plate, an eccentric wheel, a drive gear, an anti-reverse pawl, a wire hub, a housing, a hose, a wire rope, and an anti-roll bar. The overload spring cover plate, overload spring, eccentric wheel, drive gear, anti-reverse pawl, and wire hub are sequentially connected and arranged in the cavity formed by the upper cover plate and the housing, and are fixed by the fixing rivets. The drive shaft extends into the cavity, and the outside is a wrench mating part that mates with one end of the special wrench. One end of the wire rope is set on the wire hub, and the other end extends into the anti-roll bar and connects to the spare tire mounting hook. The wire rope is wrapped with a hose, and a bend is provided between the anti-roll bar and the hose.

2. The spare tire fixing device for preventing loosening and tilting according to claim 1, characterized in that: The wire rope has a slack inside the hose, and the elbow is movably connected to the anti-tilt bar.

3. The spare tire fixing device for preventing loosening and tilting according to claim 1, characterized in that: The pawl portion of the anti-reverse pawl engages with the recess on the wire hub to achieve engagement in both the working and non-working states of the anti-reverse pawl.

4. The spare tire fixing device for preventing loosening and tilting according to claim 1, characterized in that: The spare tire mounting hook is fixed to the spare tire wheel core and is also fixed in conjunction with the anti-roll bar.

5. The spare tire fixing device for preventing loosening and tilting according to claim 1, characterized in that: The overload spring cover plate, overload spring, eccentric wheel, drive gear plate, and wire hub are sequentially connected and driven.

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