Spare tire mounting and fixing structure

Abstract

The spare tire mounting and fixing structure comprises a containing box fixedly mounted in a groove in the bottom of an automobile trunk, a mounting cavity is formed in the containing box, a containing groove used for containing a spare tire is further formed in the portion, located above the mounting cavity, of the containing box, and a cover plate is arranged at the top of the containing groove; the spare tire comprises a spare tire hub, a vacuum tire arranged on the circumference of the spare tire hub and a hub mounting hole formed in the center of the spare tire hub. Through mutual cooperation of multiple positioning mechanisms, it can be ensured that a fixing cylinder and a vertical positioning column fix a spare tire very stably, and the problems that due to the fact that an existing new energy saloon car lacks effective fixing of the spare tire, the spare tire is likely to shake in a groove in the bottom of a trunk in the driving process of the car, and the stability of the spare tire is affected are solved. And therefore, great convenience is brought to operation and use of people, and popularization and use are facilitated.

Description

Technical Field

[0001] This invention relates to the field of spare tire installation technology, and more particularly to a spare tire installation and fixing structure. Background Technology

[0002] As is well known, new energy vehicles are automobiles that use unconventional vehicle fuels as their power source (or use conventional vehicle fuels and adopt new on-board power devices), and integrate advanced technologies in vehicle power control and drive, resulting in vehicles with advanced technical principles and new technologies and structures.

[0003] New energy vehicles typically come equipped with a spare tire after purchase. The installation and securing methods for the spare tire vary depending on the type of new energy vehicle. Aside from off-road new energy vehicles where the spare tire is mounted on a hanging rack, the most common type is the concealed spare tire on both sedan and hatchback new energy sedans. This type usually places the spare tire under the rear cargo partition. This design requires a pre-designed space for the spare tire during vehicle manufacturing; the body frame steel plate is stamped with a groove of the appropriate shape according to the spare tire's dimensions. The spare tire is placed in this groove at the factory, and a foldable partition covers it, completely concealing the spare tire and creating a flat storage space above the partition.

[0004] However, the spare tires used in traditional new energy vehicles are simply placed in the grooves of the vehicle frame and covered only by a partition (cover plate), lacking effective positioning and fixation. As a result, when the vehicle is in motion, the spare tire is prone to shaking in the groove at the bottom of the trunk, which can cause significant impact on the spare tire itself and the groove at the bottom of the trunk, affecting the lifespan of the spare tire. Therefore, it is necessary to design a spare tire installation and fixing structure that can stably position the spare tire and make it easy for people to fix and use it. Summary of the Invention

[0005] Based on the technical problems existing in the background art, the present invention proposes a spare tire mounting and fixing structure.

[0006] The present invention proposes a spare tire mounting and fixing structure, including a placement box fixedly installed in a groove at the bottom of the trunk of a car, the placement box having a mounting cavity, and a placement slot for placing the spare tire on the placement box above the mounting cavity, the top of the placement slot being provided with a cover plate; the spare tire includes a spare tire hub, a tubeless tire on the circumference of the spare tire hub, and a hub mounting hole at the center of the spare tire hub.

[0007] A through-hole is provided in the center of the bottom inner wall of the placement slot. A first stepper motor is fixedly installed on the bottom inner wall of the mounting cavity below the through-hole. The output end of the first stepper motor is fixedly connected to a rotating shaft, and the top end of the rotating shaft passes through the through-hole and extends into the placement slot. A fixing cylinder is fixedly sleeved on the top of the rotating shaft located in the placement slot. Four arc-shaped grooves are provided on the circumference of the fixing cylinder. Vertical positioning pins for positioning the wheel hub mounting holes are movably installed in the four arc-shaped grooves, and the bottom end of the vertical positioning pins extends into the mounting cavity.

[0008] An L-shaped sliding frame is fixedly connected to the bottom of the vertical positioning column on the side away from the rotating shaft. A support block is also fixedly installed in the mounting cavity outside the L-shaped sliding frame. A linkage rod is fixedly connected to the outer end of the L-shaped sliding frame, and the outer end of the linkage rod extends movably through to the outside of the support block and is fixedly connected to an end block. A first return spring sleeved on the linkage rod is fixedly connected between the outer end of the L-shaped sliding frame and the end block. A second return spring sleeved on the linkage rod is fixedly connected between the end block and the support block.

[0009] The mounting cavity is also equipped with a positioning component to prevent the rotating shaft and the fixed cylinder from rotating.

[0010] Preferably, the positioning component includes a fixed gear fixedly sleeved on a rotating shaft. Each of the four sides of the fixed gear is movably provided with locking teeth for meshing and positioning the fixed gear. A bracket is fixedly connected to the bottom inner wall of the mounting cavity located outside the locking teeth. A screw is rotatably installed between the bracket and the support block. An L-shaped movable frame is threadedly connected to the screw, and the inner end of the L-shaped movable frame is also fixedly connected to the outer side of the locking teeth. The inner top inner wall of the L-shaped movable frame is also slidably installed on the top of the bracket. A second stepper motor is also fixedly installed on the bottom inner wall of the mounting cavity located between the bracket and the support block. A worm gear is fixedly connected to the output end of the second stepper motor, and a worm wheel meshes with the worm gear, which is fixedly sleeved on the screw.

[0011] Preferably, the inner wall of the outer side of the L-shaped movable frame is provided with a screw hole, and the screw rod passes through the screw hole and is threadedly connected to the screw hole.

[0012] Preferably, a first slider is fixedly provided on the top of the bracket, a first groove is provided on the inner wall of the top side of the L-shaped movable frame, and the first slider is slidably installed in the first groove.

[0013] Preferably, four arc-shaped grooves are evenly arranged in a ring on the circumference of the fixed cylinder, and the vertical positioning post can also move from the inside and outside of the arc-shaped grooves to the circumference of the fixed cylinder, so as to make the vertical positioning post position and fix the inner wall of the wheel hub mounting hole.

[0014] Preferably, the outer side of the vertical positioning post is also fixedly provided with multiple anti-slip protrusions.

[0015] Preferably, a second slider is fixedly connected to the top of the L-shaped sliding frame, a second groove is provided on the top inner wall of the mounting cavity, and the second slider is slidably installed in the second groove.

[0016] Preferably, a controller is provided on one inner wall of the placement box, and the controller is electrically connected to the first stepper motor and the second stepper motor respectively.

[0017] The beneficial effects of this invention are:

[0018] 1. In this invention, the first stepper motor drives the rotating shaft, the fixed cylinder, and the arc-shaped groove to rotate 45 degrees, causing the vertical positioning post to move from inside the arc-shaped groove to the outside. This causes the vertical positioning post to abut against the inner wall of the wheel hub mounting hole through the anti-slip protrusion, thus achieving the initial fixation of the spare tire wheel hub and the entire spare tire, including the tubeless tire, to prevent the spare tire from shaking while the vehicle is in motion.

[0019] 2. In this invention, the second stepper motor drives the worm gear to rotate. When the worm gear rotates, it meshes with the worm wheel, which in turn drives the screw to rotate. This allows the L-shaped moving frame to perform threaded transmission on the screw through the screw hole. When the L-shaped moving frame moves, it also drives the locking teeth to move inward, which in turn causes the locking teeth to mesh with the fixed gear for positioning. In this way, the fixed gear is positioned, which in turn positions the rotating shaft and the fixed cylinder. By positioning the fixed cylinder, the vertical positioning post can be prevented from sliding into the arc groove due to the rotation of the fixed cylinder. This releases the situation where the vertical positioning post abuts against the inner wall of the wheel hub mounting hole, thus ensuring a more reliable abutment positioning of the vertical positioning post in the wheel hub mounting hole. Ultimately, this greatly ensures a more stable fixation of the spare tire hub and the entire spare tire, including the tubeless tire, and prevents it from becoming loose.

[0020] 3. In this invention, the worm and worm wheel have a self-locking feature after meshing, which further prevents the shaft and the fixed cylinder from rotating, ensuring that the vertical positioning pin on the outer circumference of the fixed cylinder is more firmly positioned against the inner wall of the wheel hub mounting hole. Finally, through the cooperation of multiple positioning mechanisms, the fixed cylinder and the vertical positioning pin can ensure that the spare tire is very firmly fixed. This solves the problem that existing new energy vehicles lack effective fixation for the spare tire, which causes the spare tire to shake in the groove at the bottom of the trunk during driving, resulting in a large impact on the spare tire and affecting its service life. This greatly facilitates operation and use, and is conducive to its widespread adoption. Attached Figure Description

[0021] Figure 1 This is a side sectional view of a spare tire mounting and fixing structure proposed in this invention.

[0022] Figure 2 This is a top view of the structure of the present invention;

[0023] Figure 3 For the present invention Figure 2 A schematic diagram of the structure between the rotating shaft, fixed cylinder, arc groove, vertical positioning column, and anti-slip protrusion;

[0024] Figure 4 This is a schematic diagram of the structure between the fixed cylinder and the arc-shaped groove in this invention;

[0025] Figure 5 This is a schematic diagram showing the state after the hub mounting hole on the spare tire is fixed according to the present invention.

[0026] Figure 6 This is a top view schematic diagram of the spare tire after it has been fixed according to the present invention;

[0027] Figure 7 For the present invention Figure 6 A magnified diagram showing a local detail;

[0028] Figure 8 This is a schematic diagram of the structure between the worm, worm wheel, and screw in this invention.

[0029] In the diagram: 1. Placement box; 101. Cover plate; 102. Placement slot; 103. Mounting cavity; 104. Controller; 2. Spare tire hub; 200. Through port; 201. Tubeless tire; 202. Hub mounting hole; 3. First stepper motor; 4. Shaft; 5. Fixed cylinder; 501. Arc groove; 6. Vertical positioning post; 601. Anti-slip protrusion; 7. L-shaped sliding frame; 8. First return spring; 9. Linkage rod; 10. End block; 11. Second return spring; 12. Support block; 13. Second stepper motor; 14. Worm gear; 15. Worm wheel; 16. Screw; 17. Screw hole; 18. L-shaped moving frame; 19. Bracket; 20. Clamping tooth; 21. Fixed gear; 22. Second slider. Detailed Implementation

[0030] The present invention will be further explained below with reference to specific embodiments.

[0031] Example

[0032] refer to Figure 1-8 This embodiment proposes a spare tire mounting and fixing structure, including a placement box 1 fixedly installed in a groove at the bottom of the trunk of a car. The placement box 1 is provided with a mounting cavity 103. The placement box 1 above the mounting cavity 103 is also provided with a placement groove 102 for placing the spare tire. The top of the placement groove 102 is provided with a cover plate 101. The spare tire includes a spare tire hub 2, a tubeless tire 201 provided on the circumference of the spare tire hub 2, and a hub mounting hole 202 provided at the center of the spare tire hub 2.

[0033] A through-hole 200 is provided in the center of the bottom inner wall of the placement groove 102. A first stepper motor 3 is fixedly installed on the bottom inner wall of the mounting cavity 103 located below the through-hole 200. The output end of the first stepper motor 3 is fixedly connected to a rotating shaft 4, and the top end of the rotating shaft 4 passes through the through-hole 200 and extends into the placement groove 102. A fixing cylinder 5 is fixedly sleeved on the top of the rotating shaft 4 located in the placement groove 102. Four arc-shaped grooves 501 are provided on the circumference of the fixing cylinder 5. Vertical positioning pins 6 for positioning the hub mounting hole 202 are movably provided in the four arc-shaped grooves 501, and the bottom end of the vertical positioning pins 6 extends into the mounting cavity 103.

[0034] An L-shaped sliding frame 7 is fixedly connected to the bottom of the vertical positioning column 6 on the side away from the rotating shaft 4. A support block 12 is also fixedly installed in the mounting cavity 103 located outside the L-shaped sliding frame 7. A linkage rod 9 is fixedly connected to the outer end of the L-shaped sliding frame 7, and the outer end of the linkage rod 9 extends movably through to the outside of the support block 12 and is fixedly connected to an end block 10. A first return spring 8 sleeved on the linkage rod 9 is fixedly connected between the outer end of the L-shaped sliding frame 7 and the end block 10. A second return spring 11 sleeved on the linkage rod 9 is fixedly connected between the end block 10 and the support block 12.

[0035] The mounting cavity 103 is also equipped with a positioning component to prevent the rotating shaft 4 and the fixed cylinder 5 from rotating.

[0036] In this example, the positioning component includes a fixed gear 21 fixedly sleeved on the rotating shaft 4. Each of the four sides of the fixed gear 21 is movably provided with locking teeth 20 for meshing and positioning the fixed gear 21. A bracket 19 is fixedly connected to the bottom inner wall of the mounting cavity 103 located outside the locking teeth 20. A screw 16 is rotatably installed between the bracket 19 and the support block 12. An L-shaped movable frame 18 is threadedly connected to the screw 16, and the inner end of the L-shaped movable frame 18 is also fixedly connected to the outer side of the locking teeth 20. The inner top inner wall of the L-shaped movable frame 18 is also slidably installed on the top of the bracket 19. A second stepper motor 13 is also fixedly installed on the bottom inner wall of the mounting cavity 103 located between the bracket 19 and the support block 12. A worm gear 14 is fixedly connected to the output end of the second stepper motor 13. A worm wheel 15 meshes with the worm gear 14, and the worm wheel 15 is fixedly sleeved on the screw 16.

[0037] In this example, the inner wall of the outer side of the L-shaped movable frame 18 is provided with a screw hole 17, and the screw 16 passes through the screw hole 17 and is threadedly connected to the screw hole 17; a first slider is fixedly provided on the top of the bracket 19, a first groove is provided on the inner wall of the top side of the L-shaped movable frame 18, and the first slider is slidably installed in the first groove.

[0038] In this example, four arc-shaped grooves 501 are evenly arranged in a ring on the circumference of the fixed cylinder 5, and the vertical positioning post 6 can also move from the inside and outside of the arc-shaped grooves 501 to the circumference of the fixed cylinder 5, so as to make the vertical positioning post 6 position and fix the inner wall of the hub mounting hole 202.

[0039] In this example, multiple anti-slip protrusions 601 are fixedly provided on the outer side of the vertical positioning column 6; the top of the L-shaped sliding frame 7 is fixedly connected to the second slider 22, the top inner wall of the mounting cavity 103 is provided with a second sliding groove, and the second slider 22 is slidably installed in the second sliding groove.

[0040] The inner wall of one side of the placement box 1 is equipped with a controller 104, which is electrically connected to the first stepper motor 3 and the second stepper motor 13 respectively.

[0041] like Figure 1-8 The spare tire mounting and fixing structure shown is used as follows: the entire spare tire is fitted onto the four vertical positioning posts 6 through the hub mounting holes 201, and then placed into the placement groove 102 (e.g., Figure 1 and Figure 2 (as shown in the diagram); subsequently, the controller 104 activates the first stepper motor 3, driving the rotating shaft 4, the fixed cylinder 5, and the arc-shaped groove 501 to rotate by 45 degrees. After rotating by 45 degrees, the fixed cylinder 5 and the arc-shaped groove 501 will cause the vertical positioning post 6 to move from inside the arc-shaped groove 501 to the outside, thereby causing the vertical positioning post 6 to abut against the inner wall of the hub mounting hole 201 through the anti-slip protrusion 601 (as shown in the diagram); then, the controller 104 activates the first stepper motor 3, driving the rotating shaft 4, the fixed cylinder 5, and the arc-shaped groove 501 to rotate by 45 degrees. Figure 5 As shown in the diagram, when the vertical positioning post 6 moves outward, it also drives the L-shaped sliding bracket 6 to move outward and presses the first return spring 8. When the L-shaped sliding bracket 6 moves outward, it also drives the end block 10 to move outward through the linkage rod 9 and stretches the second return spring 11. Finally, the anti-slip protrusion 601 on the outside of the vertical positioning post 6 abuts against the inner wall of the wheel hub mounting hole 201, thereby achieving the initial fixation of the spare tire wheel hub 2 and the entire spare tire, including the tubeless tire 201, which can prevent the spare tire from shaking while the vehicle is in motion.

[0042] As a further implementation, the second stepper motor 13 then drives the worm gear 14 to rotate. When the worm gear 14 rotates, it meshes with the worm wheel 15, which in turn drives the screw 16 to rotate. This allows the L-shaped moving frame 18 to perform threaded transmission on the screw 16 through the screw hole 17. When the L-shaped moving frame 18 moves, it also drives the retaining tooth 17 to move inward, which in turn causes the retaining tooth 17 to mesh with the fixed gear 21 for positioning. In this way, the fixed gear 21 is positioned, which in turn positions the rotating shaft 4 and the fixed cylinder 5. By positioning the fixed cylinder 5, the vertical positioning post 6 can be prevented from sliding into the arc groove 501 due to the rotation of the fixed cylinder 5, thereby releasing the vertical positioning post 6 from abutting against the inner wall of the hub mounting hole 201. The positioning ensures that the vertical positioning pin 6 is more securely positioned against the inner wall of the hub mounting hole 201, thus greatly ensuring a more stable fixation of the spare tire hub 2 and the tubeless tire 201, preventing loosening. Furthermore, the worm and worm wheel have a self-locking characteristic after meshing. Therefore, as long as the second stepper motor 13 and worm 14 in this invention are not turned on, the worm wheel 15 can be prevented from rotating. Through the self-locking characteristic of the worm 14 and worm wheel 15 after meshing, the rotation of the shaft 4 and the fixed cylinder 5 can be further prevented, ensuring a more secure positioning of the vertical positioning pin 6 on the outer circumference of the fixed cylinder 5 against the inner wall of the hub mounting hole 201 (e.g., Figure 5 As shown in the figure, this invention solves the problem that existing new energy vehicles lack effective means of securing the spare tire, which causes the spare tire to wobble in the groove at the bottom of the trunk during driving, resulting in significant impact on the spare tire and affecting its lifespan. This invention greatly simplifies operation and use, and is conducive to its widespread adoption.

[0043] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A spare tire mounting and fixing structure, characterized in that, The system includes a storage box (1) fixedly installed in a recess at the bottom of the trunk of a car. The storage box (1) has a mounting cavity (103). The storage box (1) located above the mounting cavity (103) also has a storage slot (102) for placing the spare tire. The top of the storage slot (102) is provided with a cover plate (101). The spare tire includes a spare tire hub (2), a tubeless tire (201) on the circumference of the spare tire hub (2), and a hub mounting hole (202) at the center of the spare tire hub (2). The bottom inner wall of the placement groove (102) is provided with a through opening (200) in the center. The bottom inner wall of the mounting cavity (103) below the through opening (200) is fixedly installed with a first stepper motor (3). The output end of the first stepper motor (3) is fixedly connected to a rotating shaft (4), and the top end of the rotating shaft (4) passes through the through opening (200) and extends into the placement groove (102). The top of the rotating shaft (4) in the placement groove (102) is fixedly sleeved with a fixing cylinder (5). Four arc-shaped grooves (501) are provided on the circumference of the fixing cylinder (5). Vertical positioning pins (6) for positioning the hub mounting hole (202) are movably provided in the four arc-shaped grooves (501), and the bottom end of the vertical positioning pins (6) extends into the mounting cavity (103). An L-shaped sliding frame (7) is fixedly connected to the bottom of the vertical positioning column (6) away from the rotating shaft (4). A support block (12) is also fixedly installed in the mounting cavity (103) outside the L-shaped sliding frame (7). A linkage rod (9) is fixedly connected to the outer end of the L-shaped sliding frame (7), and the outer end of the linkage rod (9) extends through to the outside of the support block (12) and is fixedly connected to an end block (10). A first return spring (8) sleeved on the linkage rod (9) is fixedly connected between the outer end of the L-shaped sliding frame (7) and the end block (10); a second return spring (11) sleeved on the linkage rod (9) is fixedly connected between the end block (10) and the support block (12). The mounting cavity (103) is also provided with a positioning component for preventing the rotating shaft (4) and the fixed cylinder (5) from rotating.

2. The spare tire mounting and fixing structure according to claim 1, characterized in that, The positioning assembly includes a fixed gear (21) fixedly sleeved on the rotating shaft (4). Each of the four sides of the fixed gear (21) is movably provided with locking teeth (20) for meshing and positioning the fixed gear (21). A bracket (19) is fixedly connected to the bottom inner wall of the mounting cavity (103) located outside the locking teeth (20). A screw (16) is rotatably installed between the bracket (19) and the support block (12). An L-shaped movable frame (18) is threadedly connected to the screw (16). The inner end of the moving frame (18) is also fixedly connected to the outer side of the clasp (20); the inner top wall of the L-shaped moving frame (18) is also slidably installed on the top of the bracket (19); a second stepper motor (13) is also fixedly installed on the bottom inner wall of the mounting cavity (103) between the bracket (19) and the support block (12), and a worm (14) is fixedly connected to the output end of the second stepper motor (13), a worm wheel (15) is meshed on the worm (14), and the worm wheel (15) is fixedly sleeved on the screw (16).

3. The spare tire mounting and fixing structure according to claim 2, characterized in that, The L-shaped movable frame (18) has a screw hole (17) on its outer inner wall, and the screw (16) passes through the screw hole (17) and is threadedly connected to the screw hole (17).

4. The spare tire mounting and fixing structure according to claim 2, characterized in that, The top of the bracket (19) is fixedly provided with a first slider, and the top inner wall of the L-shaped movable frame (18) is provided with a first sliding groove, and the first slider is slidably installed in the first sliding groove.

5. The spare tire mounting and fixing structure according to claim 1, characterized in that, Four arc-shaped grooves (501) are evenly arranged in a ring on the circumference of the fixed cylinder (5), and the vertical positioning column (6) can also move from the inside and outside of the arc-shaped grooves (501) to the circumference of the fixed cylinder (5) to make the vertical positioning column (6) position and fix the inner wall of the hub mounting hole (202).

6. The spare tire mounting and fixing structure according to claim 1, characterized in that, Multiple anti-slip protrusions (601) are also fixedly provided on the outer side of the vertical positioning post (6).

7. The spare tire mounting and fixing structure according to claim 1, characterized in that, The top of the L-shaped sliding frame (7) is fixedly connected to a second slider (22), and the top inner wall of the mounting cavity (103) is provided with a second sliding groove, and the second slider (22) is slidably installed in the second sliding groove.

8. The spare tire mounting and fixing structure according to claim 1, characterized in that, A controller (104) is provided on one inner wall of the placement box (1), and the controller (104) is electrically connected to the first stepper motor (3) and the second stepper motor (13).

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