Off-road vehicle lower hanging lifting type spare tire fixing structure

Abstract

The utility model discloses an off-road vehicle lower hanging lifting type spare tire fixing structure which comprises a fixing base, a winding groove is formed in the fixing base, a lifting mechanism is arranged in the winding groove, a steel wire rope is fixedly connected in the lifting mechanism, the tail end of the steel wire rope penetrates through the fixing base in a sliding mode and is fixedly connected with a supporting base, and a transmission groove is formed in the supporting base. And a limiting mechanism is arranged in the transmission groove. The off-road vehicle spare tire mounting and dismounting device has the advantages that the spare tire needing to be mounted is limited and suspended above the supporting seat through the limiting mechanism, and then the suspended off-road vehicle spare tire is clamped in a lifting mode through the lifting mechanism, so that the off-road vehicle spare tire is more convenient and rapid to mount and dismount, and mounting and dismounting can be carried out without extra tools.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a lifting spare tire fixing structure under the slung of an off-road vehicle. Background Art

[0002] Spare tires, as one of the important accessories of cars, refer to replacement tires prepared in advance to deal with emergencies such as tire damage or flat tires during driving, ensuring that the driver can continue the journey until reaching the maintenance point for formal repair or replacement. With the widespread popularity of off-road vehicles, the under-mounted spare tire, as a unique design element in off-road vehicles, not only highlights the off-road characteristics of the vehicle, but also provides a convenient way to store the spare tire in actual use. However, the under-mounted spare tire fixing structure of off-road vehicles on the current market still has certain deficiencies in design, especially in the installation and removal process, which is more cumbersome.

[0003] Traditional under-mounted spare tires are usually fixed by bolts, that is, several bolts are passed through the spare tire frame and the spare tire hole, and then the nuts are tightened with a wrench to achieve fixation. In this process, users need to carry and use professional tools such as wrenches, which not only increases the complexity of the operation, but also in outdoor off-road environments, once the tools are lost or forgotten, it will cause great inconvenience to the emergency replacement of the spare tire. On the other hand, due to the heavy weight of the spare tire, manually lifting the spare tire to a fixed position and completing the tightening requires high physical strength. For drivers with weaker physical fitness, the installation and removal of the spare tire is relatively inconvenient. Therefore, it is necessary to propose a lifting spare tire fixing structure for an off-road vehicle to solve the above-mentioned problems. Utility Model Content

[0004] In view of the problems in the related technology, the utility model proposes an off-road vehicle under-hung lifting spare tire fixing structure to overcome the above technical problems existing in the existing related technology.

[0005] To this end, the specific technical solutions adopted by the utility model are as follows:

[0006] A lifting spare tire fixing structure for an off-road vehicle includes a fixing seat, a winding groove is provided inside the fixing seat, a lifting mechanism is provided inside the winding groove, a steel wire rope is fixedly connected inside the lifting mechanism, an end of the steel wire rope slides through the fixing seat and is fixedly connected to a supporting seat, a transmission groove is provided inside the supporting seat, and a limiting mechanism is provided inside the transmission groove.

[0007] Furthermore, in order to facilitate the lifting and disassembly of the under-mounted spare tire, the lifting mechanism includes a winding drum rotatably installed inside the winding groove, one end of the winding drum is fixedly connected to a transmission worm gear, one side of the transmission worm gear is meshingly connected to a transmission worm screw, one end of the transmission worm screw is rotated through a fixed seat and is fixedly connected to a twisting rod, and one end of the steel wire rope is fixedly connected to the surface of the winding drum.

[0008] Furthermore, in order to realize the limited transmission in the transmission groove, the limiting mechanism includes a transmission worm wheel 2 rotatably installed inside the transmission groove, one side of the transmission worm wheel 2 is meshingly connected with a transmission worm screw 2, one end of the transmission worm screw 2 is rotated through the support seat and fixedly connected with a twisting rod 2, a support rod is fixedly connected to the surface of the transmission worm wheel 2, and an extrusion roller is rotatably installed on the top of the support rod.

[0009] Furthermore, in order to achieve limited support for the spare tire above the support seat, a telescopic groove is opened on the side surface of the support seat, a limit block is slidably installed inside the telescopic groove, one end of the limit block is fixedly connected to a telescopic inclined plate, and the extrusion roller is rotatably installed on one side of the telescopic inclined plate.

[0010] Furthermore, in order to realize automatic retraction and resetting of the limit block, an extrusion groove is opened on the inner wall side surface of the transmission groove, a telescopic spring is fixedly connected inside the extrusion groove, an extension plate is fixedly connected to one side of the telescopic inclined plate, and the end of the telescopic spring is fixedly connected to the extension plate.

[0011] Furthermore, in order to facilitate the installation of the fixing seat on the bottom of the off-road vehicle, positioning frames are fixedly connected to both sides of the surface of the fixing seat, and the surfaces of the positioning frames are provided with mounting holes.

[0012] Furthermore, in order to reduce the wear between the spare tire and the bottom surface of the fixing seat when the spare tire is clamped, a rubber pad is fixedly installed on the bottom surface of the fixing seat.

[0013] The beneficial effects of the utility model are as follows: the support seat is installed through the spare tire hole of the off-road vehicle, the transmission worm screw 2 is screwed to drive the transmission worm wheel 2 to rotate, and the transmission worm wheel 2 rotates to drive the extrusion roller on the surface to move, and squeeze the telescopic inclined plate on one side thereof, so that the telescopic inclined plate drives the limit block to slide out of the fixed seat to support the spare tire of the off-road vehicle, and the transmission worm screw 1 is screwed to drive the transmission worm wheel 1 and the winding drum to rotate, and the winding drum rotates to wind the wire rope around its surface, so that the wire rope pulls the support seat and the spare tire to gradually move upward, so that the spare tire is clamped and installed between the fixed seat and the support seat, thereby realizing the rapid installation of the off-road vehicle's under-hung spare tire, and the self-locking property of the worm gear transmission in the lifting mechanism and the limiting mechanism can effectively prevent the spare tire from loosening after installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1It is a schematic diagram of the surface structure of a lifting spare tire fixing structure for an off-road vehicle according to an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the internal cross-sectional structure of a fixing seat in a fixing structure for an under-hung lifting spare tire for an off-road vehicle according to an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of the internal cross-sectional structure of a support seat in a lifting spare tire fixing structure for an off-road vehicle according to an embodiment of the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the connection structure between a fixing seat and a supporting seat in a fixing structure of an under-hung lifting spare tire for an off-road vehicle according to an embodiment of the utility model.

[0019] In the figure:

[0020] 1. Fixed seat; 2. Winding slot; 3. Lifting mechanism; 301. Winding drum; 302. Transmission worm wheel 1; 303. Transmission worm screw 1; 304. Twisting rod 1; 4. Wire rope; 5. Support seat; 6. Transmission slot; 7. Limiting mechanism; 701. Transmission worm wheel 2; 702. Transmission worm screw 2; 703. Twisting rod 2; 704. Support rod; 705. Extrusion roller; 706. Telescopic slot; 707. Limiting block; 708. Telescopic inclined plate; 709. Extrusion slot; 710. Telescopic spring; 711. Extension plate; 8. Positioning frame; 9. Mounting hole; 10. Rubber pad. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-Figure 4The utility model provides a technical solution: a lifting spare tire fixing structure for an off-road vehicle, comprising a metal cylindrical fixing seat 1, a winding groove 2 is provided inside the fixing seat 1, a lifting mechanism 3 is provided inside the winding groove 2, a steel wire rope 4 is fixedly connected inside the lifting mechanism 3, the end of the steel wire rope 4 slides through the bottom surface of the fixing seat 1 and is fixedly connected to a metal cylindrical supporting seat 5, a transmission groove 6 is provided inside the supporting seat 5, and a limiting mechanism 7 is provided inside the transmission groove 6; the lifting mechanism 3 comprises a winding drum 301 rotatably installed inside the winding groove 2, one end of the winding drum 301 is fixedly connected to a transmission worm wheel 302, and a transmission worm 303 is meshedly connected to the bottom of the transmission worm wheel 302, The helix angle of the transmission worm 303 is smaller than its self-locking angle, which is used to realize the self-locking property after the transmission worm 303 drives the transmission worm wheel 302 to rotate; one end of the transmission worm 303 is rotatably installed in the winding groove 2, and the other end is rotated through the fixed seat 1 and is fixedly connected with a twisting rod 304, which is used to facilitate the rotation of the transmission worm 303; one end of the wire rope 4 is fixedly connected to the surface of the winding drum 301, and the transmission worm 303 is driven to rotate by the twisting rod, so that the transmission worm 303 drives the transmission worm wheel 302 and the winding drum 301 to rotate, and then the wire rope 4 is wound and contracted on the surface of the winding drum 301, and the contraction of the wire rope 4 drives the end support seat 5 to move up and down.

[0023] See also Figure 1-Figure 4The limiting mechanism 7 includes a transmission worm wheel 701 rotatably mounted on the bottom surface of the transmission groove 6, and a transmission worm 702 is meshedly connected to one side of the transmission worm wheel 701. The helical angle of the transmission worm 702 is smaller than the self-locking angle, so that the transmission rod 702 drives the transmission worm wheel 701 to rotate with self-locking property; one end of the transmission worm 702 rotates through the support seat 5 and is fixedly connected to a twisting rod 703 for facilitating the rotation of the transmission worm 702; two pairs of supporting rods 703 are fixedly connected to the surface of the transmission worm wheel 701 The support rod 704 is provided with a squeezing roller 705 rotatably mounted on the top of the support rod 704; two pairs of telescopic grooves 706 are provided on the side surface of the support seat 5, and a limit block 707 is slidably mounted inside the telescopic groove 706, and one end of the limit block 707 is fixedly connected with a telescopic inclined plate 708, and the squeezing roller 705 is rotatably mounted on one side of the telescopic inclined plate 708; the transmission worm 702 is driven to rotate by twisting the second rod 703, and the transmission worm 702 rotates and drives the transmission worm wheel 701 to rotate, thereby making the support rod 704 The squeezing roller 705 at the top is driven to squeeze the inclined surface of the telescopic inclined plate 708, so that the telescopic inclined plate 708 pushes the limit block 707 to slide out of the telescopic groove 706; an squeezing groove 709 is opened on one side of the telescopic groove 706 on the inner wall of the transmission groove 6, and a telescopic spring 710 is fixedly connected inside the squeezing groove 709. An extension plate 711 is fixedly connected to one side of the telescopic inclined plate 708, and the end of the telescopic spring 710 is fixedly connected to the extension plate 711. When the telescopic inclined plate 708 is squeezed, the extension plate 711 is driven to squeeze the telescopic spring. 710 enters into the extrusion groove 709. When the extrusion roller 705 gradually moves away from the telescopic inclined plate 708, the telescopic spring 710 drives the extension plate 711, the telescopic inclined plate 708 and the limit block 707 to reset through its own elastic force; the surface of the fixed seat 1 is fixedly connected with a positioning frame 8 on both sides, and the surface of the positioning frame 8 is provided with a mounting hole 9 for conveniently fixing the fixed seat 1 on the bottom surface of the off-road vehicle; the bottom surface of the fixed seat 1 is fixedly installed with a rubber pad 10 for preventing extrusion and wear between the bottom surface of the fixed seat 1 and the spare tire when clamped.

[0024] In summary, with the aid of the above-mentioned technical scheme of the utility model, the support seat 5 is installed through the center hole of the spare tire of the off-road vehicle, and the transmission worm rod 2 702 is rotated by twisting the rod 2 703. After the transmission worm rod 2 702 rotates, it drives the transmission worm wheel 2 701 to rotate, so that the support rod 704 drives the squeezing roller 705 at the top to squeeze the inclined surface of the telescopic inclined plate 708, so that the telescopic inclined plate 708 pushes the limit block 707 to slide out of the telescopic groove 706, and supports the bottom surface of the spare tire of the off-road vehicle. The transmission worm rod 1 303 is twisted to drive the transmission worm wheel 1 302 and the winding drum 301 to rotate. After the winding drum 301 rotates, the wire rope 4 is wound and contracted on its surface, so that the wire rope 4 pulls the support seat 5 and the spare tire to gradually move upward, so that the spare tire is clamped and installed between the fixing seat 1 and the support seat 5, and the rapid installation of the off-road vehicle under-mounted spare tire is completed.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A lifting spare tire fixing structure for an off-road vehicle, characterized in that: The invention comprises a fixed seat (1), a winding groove (2) is formed inside the fixed seat (1), a lifting mechanism (3) is provided inside the winding groove (2), a steel wire rope (4) is fixedly connected inside the lifting mechanism (3), an end of the steel wire rope (4) slides through the fixed seat (1) and is fixedly connected to a support seat (5), a transmission groove (6) is formed inside the support seat (5), and a limiting mechanism (7) is provided inside the transmission groove (6).

2. The off-road vehicle under-hung lifting spare tire fixing structure according to claim 1, characterized in that: The lifting mechanism (3) comprises a winding drum (301) rotatably mounted inside the winding groove (2); one end of the winding drum (301) is fixedly connected to a transmission worm wheel (302); one side of the transmission worm wheel (302) is meshingly connected to a transmission worm screw (303); one end of the transmission worm screw (303) is rotatably passed through a fixed seat (1) and is fixedly connected to a twisting rod (304); one end of the steel wire rope (4) is fixedly connected to the surface of the winding drum (301).

3. The off-road vehicle under-hung lifting spare tire fixing structure according to claim 1, characterized in that: The limiting mechanism (7) comprises a second transmission worm wheel (701) rotatably mounted inside the transmission groove (6); a second transmission worm (702) is meshingly connected to one side of the second transmission worm wheel (701); one end of the second transmission worm (702) is rotatably passed through a support seat (5) and is fixedly connected to a second twisting rod (703); a support rod (704) is fixedly connected to the surface of the second transmission worm wheel (701); and a squeezing roller (705) is rotatably mounted on the top of the support rod (704).

4. The off-road vehicle under-hung lifting spare tire fixing structure according to claim 3 is characterized in that: A telescopic groove (706) is provided on the side surface of the support seat (5); a limit block (707) is slidably mounted inside the telescopic groove (706); one end of the limit block (707) is fixedly connected to a telescopic inclined plate (708); and the squeezing roller (705) is rotatably mounted on one side of the telescopic inclined plate (708).

5. The off-road vehicle under-hung lifting spare tire fixing structure according to claim 4 is characterized in that: An extrusion groove (709) is formed on the inner wall side surface of the transmission groove (6), a telescopic spring (710) is fixedly connected inside the extrusion groove (709), an extension plate (711) is fixedly connected to one side of the telescopic inclined plate (708), and a distal end of the telescopic spring (710) is fixedly connected to the extension plate (711).

6. The off-road vehicle under-hung lifting spare tire fixing structure according to claim 1, characterized in that: Positioning frames (8) are fixedly connected to both sides of the surface of the fixing seat (1), and mounting holes (9) are formed on the surface of the positioning frames (8).

7. The off-road vehicle under-hung lifting spare tire fixing structure according to claim 1, characterized in that: A rubber pad (10) is fixedly mounted on the bottom surface of the fixing seat (1).

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