External mounting type linkage spare tire mounting device

Abstract

An externally-hung linkage spare tire mounting device comprises a mounting base and a mounting support assembly. The mounting base is fixedly arranged on an automobile frame. The mounting support assembly is detachably connected with the mounting base and rotates along with a back door laterally opened by an automobile. The installation support assembly comprises a linkage support assembly and an installation support assembly. The linkage support assembly is rotatably connected with the mounting base around the rotating axis. The mounting support assembly comprises a connecting plate, a connecting rod and a spare tire support. The connecting plate is attached to the automobile back door. The connecting rod is connected with the connecting plate and the linkage support assembly. The spare tire support is inserted into the installation part and used for bearing the spare tire. The spare tire support and the linkage support assembly are connected to form a main force transmission path so as to transmit spare tire loads to an automobile frame, the connecting rod, the connecting plate and the linkage support assembly are connected to form an auxiliary force transmission path so as to transmit part of the spare tire loads to an automobile back door, and therefore the loads of the spare tire on the back door are dispersed. The problems of welding spot tearing and abnormal sound caused by drooping of the back door are avoided, so that the trafficability of an automobile is ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of spare tire fixing devices for automobiles, and in particular to an externally mounted, linked spare tire mounting device. Background Technology

[0002] An externally mounted spare tire refers to a spare tire installed on the outside of the tailgate. Currently, externally mounted spare tires are typically mounted on the tailgate assembly using a spare tire mounting bracket, which is connected to the vehicle body via hinges and latches. When an externally mounted spare tire is installed on the tailgate, the overall weight of the spare tire is relatively large. Furthermore, during off-road driving and extreme conditions, the downward acceleration can cause the entire tailgate to sag, leading to problems such as weld tearing and abnormal noises. Utility Model Content

[0003] The purpose of this utility model is to provide an externally mounted, linked spare tire installation device that distributes the overall load of the spare tire to the vehicle frame through the linked spare tire bracket, reducing the load on the tailgate and avoiding problems such as weld tearing and abnormal noise caused by tailgate sagging, thereby ensuring the vehicle's passability.

[0004] This utility model provides an externally mounted, linked spare tire mounting device, including a mounting base and a mounting bracket assembly. The mounting base is fixedly mounted on the vehicle frame. The mounting bracket assembly is detachably connected to the mounting base and rotates with the side-opening tailgate of the vehicle. The mounting bracket assembly includes a linkage bracket assembly and a mounting bracket assembly. The linkage bracket assembly is rotatably connected to the mounting base about a rotation axis parallel to the rotation axis of the side-opening tailgate. The mounting bracket assembly includes a connecting plate, a connecting rod, and a spare tire bracket. The connecting plate is attached to the side-opening tailgate of the vehicle. The connecting rod connects the connecting plate and the linkage bracket assembly. The spare tire bracket is inserted into the mounting part along the length of the vehicle to support the spare tire. The connection between the spare tire bracket and the linkage bracket assembly forms the main force transmission path to transfer the spare tire load to the vehicle frame, while the connection between the connecting rod and the connecting plate and the linkage bracket assembly forms an auxiliary force transmission path to transfer part of the spare tire load to the side-opening tailgate of the vehicle.

[0005] The externally mounted, linked spare tire installation device provided by this utility model connects the linkage bracket assembly to the vehicle frame and rotates with the side-opening tailgate of the vehicle. At the same time, the mounting bracket assembly for supporting the spare tire is connected to the linkage bracket assembly to form the main force transmission path, thereby dispersing the load of the spare tire on the tailgate and avoiding problems such as weld tearing and abnormal noise caused by tailgate sagging, thus ensuring the vehicle's passability.

[0006] In another illustrative embodiment of the externally mounted, linked spare tire bracket, the spare tire bracket includes a first bracket and a second bracket. The first bracket is inserted into the mounting portion along the length of the vehicle. The first bracket has several limiting holes along the length of the vehicle. The limiting holes are arranged at intervals. The second bracket is movably fitted onto the first bracket along the length of the vehicle. The second bracket has a through hole along its length, connecting to the several limiting holes. A baffle is formed at the end of the second bracket away from the side-opening tailgate of the vehicle, extending in a direction parallel to the height of the vehicle. This improves the adaptability of the spare tire bracket.

[0007] In another illustrative embodiment of the externally mounted spare tire mounting device, the mounting bracket assembly further includes a safety assembly. The safety assembly includes a flexible connector and a limiting pin. One end of the flexible connector is fixedly connected to a connecting plate. The limiting pin connects to the other end of the flexible connector and is detachably inserted into several limiting holes. The limiting pin and the flexible connector provide redundant fixation to prevent the spare tire from dislodging under extreme operating conditions.

[0008] In another illustrative embodiment of the externally mounted, linked spare tire mounting device, the mounting base includes a fixing member and a bearing assembly. The fixing member is L-shaped and bolted to the rear corner of the vehicle frame. A reinforcing portion protrudes from the side of the fixing member facing away from the vehicle frame. The bearing assembly connects to the reinforcing portion. The bearing assembly includes a cylindrical bushing and two bearings. The cylindrical bushing connects to the reinforcing portion, and the bushing axis coincides with the rotation axis. The two bearings are coaxially mounted with the bushing and are located at opposite ends inside the bushing. This ensures that the mounting bracket assembly rotates coaxially with the tailgate, ensuring that the spare tire swings with the door, reducing the torsional torque of the tailgate hinge, and preventing weld tearing.

[0009] In another illustrative embodiment of the externally mounted spare tire installation device, the fixing member has three mounting holes along the width of the vehicle. The three mounting holes are distributed in a triangular shape to limit the displacement of the mounting base, thereby improving force transmission stability.

[0010] In another illustrative embodiment of the externally mounted spare tire installation device, the mounting holes and bolt connections to the vehicle frame are all pre-designed. This ensures uniform clearance between the externally mounted spare tire installation device and the vehicle body, avoiding assembly interference issues.

[0011] In another illustrative embodiment of the externally mounted, linked spare tire mounting device, the linkage bracket assembly includes a first support tube and a second support tube. The first support tube is rotatably inserted into the mounting base along the vehicle height direction. The second support tube has a mounting portion and a connecting portion. The connecting portion is fixedly connected to the first support tube, and the distance from the connecting portion to the mounting portion gradually increases along the vehicle height direction. This optimizes the force transmission path, ensures smooth force transmission to the vehicle frame, and reduces the load on the tailgate.

[0012] In another illustrative embodiment of the externally mounted spare tire mounting device, the mounting bracket assembly further includes a buffer limiting component. The buffer limiting component includes a first buffer bracket, a second buffer bracket, and two limiting blocks. The first buffer bracket extends through the mounting portion along the vehicle height direction. The second buffer bracket connects to the first buffer bracket, and the first and second buffer brackets are arranged perpendicularly, with the second buffer bracket connected to a second support tube. The two limiting blocks are respectively disposed on the first and second buffer brackets, and both abut against the connecting plate. This reduces vibration transmission, while also reducing abnormal noise and structural fatigue. Attached Figure Description

[0013] The following figures are for illustrative purposes only and do not limit the scope of the present invention.

[0014] Figure 1 This is a schematic diagram illustrating one embodiment of an externally mounted, linked spare tire installation device.

[0015] Figure 2 Figure 1 shows a schematic diagram of the mounting base for the externally mounted, linked spare tire mounting device.

[0016] Figure 3 Figure 1 shows a schematic diagram of the spare tire bracket of the externally mounted, linked spare tire installation device.

[0017] Figure 4 Figure 1 shows a partial structural schematic diagram of the externally mounted, linked spare tire installation device.

[0018] Label Explanation

[0019] 10 Mounting Base

[0020] 12 Fasteners

[0021] 121 Reinforcement Department

[0022] 122 mounting holes

[0023] 14 Bearing Assembly

[0024] 142 bushing

[0025] 146 bearing

[0026] 20 Mounting Bracket Assembly

[0027] 22 Linkage Bracket Assembly

[0028] 222 First support pipe

[0029] 224 Second support tube

[0030] 2241 Installation Department

[0031] 2243 Connecting part

[0032] 24 Mounting bracket assembly

[0033] 242 Connecting plate

[0034] 244 Linkage

[0035] 246 Spare Tire Bracket

[0036] 2461 First support

[0037] 2462 limiting hole

[0038] 2463 Second support

[0039] 2464 Through Hole

[0040] 2465 baffle

[0041] 26 Buffer Limiting Components

[0042] 261 First Buffer Support

[0043] 263 Second Buffer Bracket

[0044] 265 limit block

[0045] 28 Insurance Components

[0046] 281 Flexible connector

[0047] 283 Limit pin. Detailed Implementation

[0048] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, specific embodiments of the present utility model are now described with reference to the accompanying drawings. In the drawings, the same reference numerals indicate components with the same or similar structures but the same function.

[0049] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0050] Figure 1 This is a schematic diagram illustrating one embodiment of an externally mounted, linked spare tire installation device. Figure 1 As shown, the externally mounted, linked spare tire mounting device includes a mounting base 10 and a mounting bracket assembly 20. The mounting base 10 is fixedly mounted on the vehicle frame, and the mounting bracket assembly 20 is detachably connected to the mounting base 10 and rotates with the side-opening tailgate of the vehicle, thereby transferring the spare tire load to the vehicle frame, reducing the load on the side-opening tailgate of the vehicle, and simultaneously enabling the side-opening tailgate to open in conjunction with the vehicle.

[0051] Figure 2 This is a structural diagram of the mounting base for an externally mounted, linked spare tire installation device. Figure 1 and Figure 2 As shown, the mounting base 10 includes a fixing member 12 and a bearing assembly 14. The fixing member 12 is L-shaped and fits into the rear corner of the vehicle frame. The fixing member 12 has three mounting holes 122 along the width direction of the vehicle, arranged in a triangular pattern. It also has two mounting holes 122 along the length direction of the vehicle, arranged along the height direction. Bolts are used to connect the fixing member 12 to the vehicle frame through these holes, limiting the displacement of the mounting base 10 in all directions and ensuring its stability. In this illustrative embodiment, the mounting holes 122 and the connection points with the vehicle frame are pre-designed to ensure the tolerance and position of the mounting holes 122, ensuring uniform clearance between the externally mounted spare tire and the vehicle body, and avoiding assembly interference.

[0052] like Figure 2 As shown, the fastener 12 has a reinforcing portion 121 protruding from the side facing away from the vehicle frame to ensure sufficient rigidity of the mounting base 10 and improve stability. The bearing assembly 14 is connected to the reinforcing portion 121 by welding. The bearing assembly 14 includes a cylindrical bushing 142 and two bearings 146. The cylindrical bushing 142 is welded to the reinforcing portion 121. The two bearings 146 are coaxially arranged with the bushing 142 and are located at both ends inside the bushing 142. The outer ring of the bearing 146 is interference-fitted with the bushing 142. At the same time, a sealing ring is installed on the bearing 146 to prevent moisture intrusion and grease leakage, thereby improving the reliability and service life of the bearing assembly 14.

[0053] like Figure 1 As shown, the mounting bracket assembly 20 includes a linkage bracket assembly 22 and a mounting bracket assembly 24. The linkage bracket assembly 22 is rotatably connected to the mounting base 10 through a pre-drilled hole in the rear bumper of the vehicle about a rotation axis L. The rotation axis L is parallel to the rotation axis of the side-opening tailgate of the vehicle, while ensuring that the rotation axis L coincides with the axis of the bushing 142.

[0054] The linkage bracket assembly 22 includes a first support tube 222 and a second support tube 224. In this illustrative embodiment, the first support tube 222 is a circular tube structure, and the second support tube 224 is a polygonal cross-section tubular structure. The second support tube 224 and the first support tube 222 are welded to form the linkage bracket assembly 22. The first support tube 222 is inserted into the bushing 142 of the bearing assembly 14, and is fixed to the inner ring of the bearing 146 by a locking nut to prevent the linkage bracket 22 from falling off under extreme working conditions. By utilizing the bearing assembly 14, the linkage bracket assembly 22 rotates synchronously with the tailgate around the rotation axis L, reducing the torsional torque of the tailgate hinge and preventing weld tearing. The second support tube 224 has a mounting portion 2241 and a connecting portion 2243 at each end. The connecting portion 2243 is fixedly connected to the first support tube 222, and the distance from the connecting portion 2243 to the mounting portion 2241 gradually increases along the vehicle height direction to optimize the force transmission path and reduce the load on the tailgate.

[0055] Figure 3 Figure 1 shows a schematic diagram of the spare tire bracket of the externally mounted, linked spare tire installation device. Figure 1 and Figure 3 As shown, the mounting bracket assembly 24 includes a connecting plate 242, a connecting rod 244, and a spare tire bracket 246. The connecting plate 242 is fixedly attached to the side-opening tailgate of the vehicle by bolts. The two ends of the connecting rod 244 are hinged to the connecting plate 242 and the second support tube 224, respectively, to ensure that the mounting bracket assembly 22 rotates synchronously when the tailgate opens and closes. The spare tire bracket 246 is inserted into the mounting part 2241 along the length of the vehicle to support the spare tire.

[0056] The weight of the spare tire is transmitted through the spare tire bracket 246 to the second support tube 224, then to the first support tube 222, and finally through the bearing assembly 14 to the reinforcement 121, and finally to the vehicle frame through the fixing member 12. This forms the main force transmission path to transfer the spare tire load to the vehicle frame. At the same time, the hinge between the connecting rod 244, the connecting plate 242, and the linkage bracket assembly 22 forms an auxiliary force transmission path to transfer part of the spare tire load to the side-opening tailgate. This reduces the load of the spare tire on the tailgate and avoids problems such as weld tearing and abnormal noise caused by tailgate sagging.

[0057] like Figure 3As shown, the spare tire bracket 246 includes a first bracket 2461 and a second bracket 2463. The first bracket 2461 is inserted into the mounting portion 2241 along the length of the vehicle. The first bracket 2461 has several limiting holes 2462 along the length of the vehicle, which are arranged at intervals. The second bracket 2463 is movably fitted onto the first bracket 2461 along the length of the vehicle, thereby adjusting its fit according to different sized spare tires and providing adaptability to the spare tire bracket 246. The second bracket 2463 has a through hole 2464 along its length, which connects to the several limiting holes 2462. Figure 4 Figure 1 shows a partial structural schematic diagram of the externally mounted, linked spare tire installation device. Figure 4 As shown, the mounting bracket assembly 20 also includes a safety component 28. The safety component 28 includes a flexible connector 281 and a limiting pin 283. One end of the flexible connector 281 is fixedly connected to the connecting plate 242. The limiting pin 283 connects to the other end of the flexible connector 281. When the spare tire bracket 246 is adjusted to the appropriate position, the limiting pin 283 passes through the through hole 2464 of the second bracket 2463 and is inserted into the limiting hole 2462 of the first bracket 2461 to lock the length of the spare tire bracket. Simultaneously, in extreme conditions (such as when the connecting rod 244 breaks), the flexible connector 281 pulls down the spare tire bracket 246, and the limiting pin 283 provides a secondary lock to prevent the spare tire from falling off.

[0058] In this illustrative embodiment, the end of the second bracket 2463 away from the side-opening tailgate of the vehicle extends in a direction parallel to the height of the vehicle to form a baffle 2465, which abuts against the spare tire to further prevent the spare tire from falling off.

[0059] like Figure 4 As shown, the mounting bracket assembly 20 also includes a buffer limiting component 26. The buffer limiting component 26 includes a first buffer bracket 261, a second buffer bracket 263, and two limiting blocks 265. The first buffer bracket 261 extends through the mounting portion 2241 along the vehicle height direction. The second buffer bracket 263 connects to the first buffer bracket 261 and is perpendicular to it, and is connected to the second support tube 224 to ensure the stability of the mounting bracket assembly 20. The two limiting blocks 265 are respectively disposed on the first buffer bracket 261 and the second buffer bracket 263, and both abut against the connecting plate 242. When the tailgate is closed, the limiting blocks 265 of the buffer limiting component 26 contact the connecting plate 242, absorbing vibration and impact energy, while limiting the swing amplitude of the linkage bracket assembly 22 and the mounting bracket assembly 24, reducing abnormal noise and structural fatigue.

[0060] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0061] The detailed descriptions listed above are merely specific descriptions of feasible embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. All equivalent implementation schemes or modifications made without departing from the spirit of the present utility model, such as combinations, divisions or repetitions of features, should be included within the scope of protection of the present utility model.

Claims

1. An externally mounted linkage spare tire mounting device characterized by, The application relates to a mounting bracket assembly for a side-hinged back door of a vehicle, comprising: a mounting base (10) fixedly arranged on a vehicle frame; a mounting bracket assembly (20) detachably connected to the mounting base (10) and rotating with the side-hinged back door of the vehicle, the mounting bracket assembly (20) comprising: a linkage bracket assembly (22) rotatably connected to the mounting base (10) about a rotation axis (L) parallel to a rotation axis of the side-hinged back door of the vehicle, the linkage bracket assembly (22) comprising: a first support tube (222) rotatably inserted into the mounting base (10) along a vehicle height direction, and a second support tube (224) having a mounting portion (2241) and a connecting portion (2243), the connecting portion (2243) fixedly connected to the first support tube (222), the connecting portion (2243) gradually rising along the vehicle height direction to the mounting portion (2241); and a mounting bracket assembly (24) comprising: a connecting plate (242) attached to the side-hinged back door of the vehicle, a connecting rod (244) connected to the connecting plate (242) and the linkage bracket assembly (22) respectively, and a spare tire bracket (246) inserted into the mounting portion (2241) along a vehicle length direction to carry a spare tire, wherein the spare tire bracket (246) and the linkage bracket assembly (22) form a main force transmission path to transmit a spare tire load to the vehicle frame, and the connecting rod (244) and the connecting plate (242) and the linkage bracket assembly (22) form an auxiliary force transmission path to transmit a spare tire partial load to the side-hinged back door of the vehicle. The spare tire bracket (246) comprises:

2. The hingedly attached spare tire mounting device of claim 1, wherein a first bracket (2461) inserted into the linkage bracket assembly (22) along the vehicle length direction, the first bracket (2461) being provided with a plurality of limiting holes (2462) along the vehicle length direction, and the limiting holes (2462) being arranged at intervals; and a second bracket (2463) movably sleeved on the first bracket (2461) along the vehicle length direction, the second bracket (2463) being provided with a through hole (2464) along a length direction thereof, the through hole (2464) being communicated with the limiting holes (2462), and an end of the second bracket (2463) away from the side-hinged back door of the vehicle being extended to form a baffle (2465) along a direction parallel to the vehicle height direction. The mounting bracket assembly (20) further comprises a safety assembly (28) comprising:

3. The hingedly attached spare tire mounting device of claim 2, wherein a flexible connecting piece (281) having one end fixedly connected to the connecting plate (242), and a limiting pin (283) connected to the other end of the flexible connecting piece (281), the limiting pin (283) being detachably inserted into the limiting holes (2462). The mounting base (10) comprises:

4. The hingedly attached spare tire mounting device of claim 1 wherein, ​ A fixed part (12) is in the shape of an L-shaped plate, the fixed part (12) is bolted to the rear corner of the automobile frame, and a reinforcing part (121) is formed on the side of the fixed part (12) away from the automobile frame. A bearing assembly (14) is connected to the reinforcing part (121), and the bearing assembly (14) comprises: A cylindrical shaft sleeve (142) is connected to the reinforcing part (121), and the axis of the shaft sleeve (142) coincides with the rotation axis (L); and Two bearings (146) are coaxially arranged with the shaft sleeve (142) and are respectively located at both ends inside the shaft sleeve (142).

5. The hingedly attached spare tire mounting device of claim 4, wherein The fixed part (12) is provided with three mounting holes (122) along the automobile width direction, and the three mounting holes (122) are distributed in a triangular shape to limit the displacement of the mounting base (10).

6. The hingedly attached spare tire mounting device of claim 5, wherein The mounting holes (122) and the bolt connection parts of the automobile frame are designed in advance.

7. The hingedly attached spare tire mounting device of claim 1 wherein, The mounting support assembly (20) further comprises a buffer limiting component (26), which comprises: A first buffer support (261) is arranged in the mounting part (2241) along the automobile height direction; A second buffer support (263) is connected to the first buffer support (261), the first buffer support (261) and the second buffer support (263) are arranged perpendicularly, and the second buffer support (263) is connected to the second support pipe (224); and Two limiting blocks (265) are respectively arranged in the first buffer support (261) and the second buffer support (263), and abut against the connecting plate (242).

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