Automobile tail door expansion frame

Abstract

An automobile tail door expansion frame comprises a bottom plate, the upper side face and the lower side face of the bottom plate extend backwards to form supporting frames, and installation holes are formed in the supporting frames to be connected with an automobile. A mounting plate is further arranged on the front face of the bottom plate, the edge of the mounting plate extends backwards to form an isolation base, the mounting plate is connected with the bottom plate through the isolation base, and a clearance area is formed between the isolation base and the mounting plate; a plurality of expansion holes are formed in the mounting plate, and accessories to be mounted are connected with the mounting plate through the expansion holes. The automobile expansion frame has the advantages that through the structural design of the supporting frame and the bottom plate, the expansion frame can be stably connected with an automobile through the mounting holes, and the problem that a welded junction cracks due to a traditional welding mode is solved. Through reasonable layout of structural parts, strenuous vibration during bumping of a vehicle is reduced, the mounting stability of the expansion frame is remarkably improved, the risk that the expansion frame body falls off is effectively reduced, and the overall safety is improved.

Description

Technical Field

[0001] The utility model relates to an automobile accessory, in particular to an automobile tailgate expansion rack. Background Art

[0002] With the continuous development of the off-road vehicle market, more and more vehicle owners are looking to modify their vehicles to enhance their functionality and convenience for outdoor activities. Multi-function expansion racks, a common component in off-road vehicle modifications, can add additional mounting space to the spare tire area for common outdoor equipment such as rear spotlights, radio antennas, flagpoles, and shovels. However, existing multi-function expansion racks have significant shortcomings in their structural design and connection methods, limiting their functionality and service life.

[0003] Many existing multi-functional spare tire expansion racks for off-road vehicles primarily utilize welding as their primary connection method. Specifically, the expansion rack body is connected to the vehicle body via a flange with a welded connecting pipe. Due to the large distance between the flange and the expansion rack body, during driving, especially off-road, the vehicle's jolts and vibrations are transmitted through the flange to the expansion rack body, causing it to shake violently. This intense vibration can easily crack or even break the welds on the flange, causing the expansion rack body to fall off. This detachment not only damages the expansion rack itself but also poses a serious safety hazard to following vehicles.

[0004] Multifunctional expansion racks, which rely on welding as their primary connection method, also face many challenges during the manufacturing process. First, the welding process is relatively complex, requiring lengthy comparisons and adjustments to ensure the precise positioning of each component after welding. Any carelessness during welding can cause components to shift position after welding, affecting the overall installation and stability. Furthermore, welded components are more susceptible to weld tearing during long-term use due to metal fatigue and environmental influences such as rain and corrosion, further exacerbating the risk of the expansion rack's main body falling off.

[0005] Existing multifunctional expansion racks also have functional design deficiencies, failing to meet the diverse needs of off-road vehicle users. Most existing expansion racks are relatively simple in design, unable to flexibly accommodate common equipment such as rear spotlights, license plates, radio antennas, flagpoles, and shovels. This limitation prevents vehicle owners from flexibly configuring their equipment to meet their specific needs during outdoor activities. Furthermore, existing expansion rack structures are not designed to accommodate modern off-road vehicles with cameras installed in the center of the tailgate, making them unsuitable for installation on such vehicles and further limiting their applicability.

[0006] In summary, existing multifunctional expansion racks have significant deficiencies in their structural design, connection methods, and expansion functionality. Existing welded expansion racks are prone to problems such as weld tearing and the main body falling off during use, which not only increases manufacturing complexity but also poses a high safety risk. Therefore, further improvements are necessary. Utility Model Content

[0007] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a car tailgate expansion rack with a simple structure, easy to use, and able to effectively improve installation stability, reduce welding processes, and expand the installation function of more equipment.

[0008] The purpose of the utility model is achieved in the following way: a car tailgate expansion frame, which includes a bottom plate, upper and lower sides of the bottom plate are extended with support frames, and the support frames are provided with mounting holes for connection with the car;

[0009] A mounting plate is also provided on the front side of the base plate, and an isolation seat is extended backward from the edge of the mounting plate. The mounting plate is connected to the base plate through the isolation seat, and the isolation seat forms an air avoidance area between the mounting plates; a plurality of expansion holes are opened on the mounting plate, and the accessories to be installed are connected to the mounting plate through the expansion holes.

[0010] Furthermore: the expansion holes are a plurality of waist-shaped holes arranged on the mounting plate or the isolation seat.

[0011] Furthermore: the expansion holes are a plurality of circular holes arranged on the mounting plate or the isolation seat.

[0012] Furthermore: the expansion holes are a plurality of waist-shaped holes and circular holes arranged on the mounting plate or the isolation seat, and the waist-shaped holes and the circular holes are distributed at intervals.

[0013] Furthermore: a plurality of air-avoiding grooves are provided on the bottom plate at positions corresponding to the mounting plates.

[0014] The beneficial effects of the utility model are: 1. Simple structure, low production cost and improved market competitiveness.

[0015] 2. The structural design of the support frame and base plate ensures a secure connection between the expansion rack and the vehicle through the mounting holes, avoiding the cracking issues associated with traditional welding methods. The rational layout of the structural components reduces the severe vibrations caused by bumps in the vehicle, significantly improving the installation stability of the expansion rack and effectively reducing the risk of the expansion rack falling off, thereby enhancing overall safety.

[0016] 3. This new method uses a mechanical connection method instead of the traditional welding connection method, which reduces the complexity of the welding process, avoids the steps such as comparison and calibration during the welding process, and simplifies the production process. The mechanical connection method is also more conducive to standardized production, improving production efficiency, and reducing installation deviations and quality problems caused by welding errors.

[0017] 4. The expansion rack of this utility model features several expansion holes designed on the mounting plate, including waist-shaped holes and circular holes, providing a variety of accessory mounting possibilities. This diverse mounting hole design allows users to flexibly install equipment such as rear spotlights, radio antennas, flagpoles, and shovels according to their actual needs, greatly expanding the functionality of the expansion rack and adapting to the needs of more outdoor activities.

[0018] 5. By designing a clearance zone and a clearance groove between the mounting plate and the base plate, this utility model provides space for installing a camera between the spare tire of an off-road vehicle, eliminating interference between the camera and the expansion rack. This design expands the applicability of the expansion rack, accommodating a wider range of vehicles and meeting the diverse needs of modern off-road vehicle users.

[0019] 6. Through a rational structural layout and connection design, this utility model reduces the vibration transmission effect of the expansion rack during vehicle operation and improves the overall seismic performance of the structure. Compared with traditional welding, mechanical connection is not only more stable but also less likely to cause weld tearing or weld aging during long-term use, thereby improving the durability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1-3 This is the general assembly effect diagram of the utility model.

[0021] Figure 4 This is a cross-sectional view of the structure of the utility model. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings. A car tailgate expansion rack comprises a base plate 1, with support frames 2 extending rearward from the upper and lower sides of the base plate 1, and mounting holes 3 provided on the support frames 2 for connection to the car;

[0023] A mounting plate 4 is also provided on the front of the base plate 1, and an isolation seat 5 is extended backward from the edge of the mounting plate 4. The mounting plate 4 is connected to the base plate 1 through the isolation seat 5, and the isolation seat 5 forms an air avoidance area 7 between the mounting plates 4; a plurality of expansion holes 8 are opened on the mounting plate 4, and the accessories to be installed are connected to the mounting plate 4 through the expansion holes 8.

[0024] In one embodiment, the expansion holes 8 are a plurality of waist-shaped holes provided on the mounting plate 4 or the isolation seat 5 .

[0025] In one embodiment, the expansion holes 8 are a plurality of circular holes provided on the mounting plate 4 or the isolation seat 5 .

[0026] In one embodiment, the expansion holes 8 are a plurality of waist-shaped holes and circular holes provided on the mounting plate 4 or the isolation seat 5 , and the waist-shaped holes and the circular holes are spaced apart.

[0027] In one embodiment, a plurality of air-avoiding grooves 6 are provided on the bottom plate 1 at positions corresponding to the mounting plates 4 .

[0028] Working Principle: The tailgate extension rack of this utility model primarily comprises a base plate 1, a support frame 2, a mounting plate 4, and an isolation seat 5. The base plate 1 forms the foundation of the entire extension rack and is connected to the tailgate via support frames 2 on its upper and lower sides. The support frames 2 are provided with mounting holes 3, which allow them to be connected to the mounting area on the tailgate using fasteners such as bolts.

[0029] This design utilizes a mechanical connection, which, compared to traditional welding, secures the expansion rack to the vehicle more securely, avoiding cracking at weld points caused by uneven force. Even when the SUV encounters bumpy terrain, the connection between the expansion rack and the vehicle remains stable, preventing loosening or falling off.

[0030] A mounting plate 4 is fixed to the front of the base plate 1, and the edge of the mounting plate 4 is connected to the base plate 1 via an isolation seat 5. The isolation seat 5 forms an air gap 7 between the mounting plates 4. The design of this air gap provides space for some special installation requirements, especially for off-road vehicles with cameras in the middle.

[0031] This structural design not only ensures the stability of the mounting plate 4, but also provides appropriate avoidance space between the mounting plate and the base plate, which is conducive to avoiding interference between the expansion rack and other equipment on the vehicle tailgate, thereby improving the applicability of the expansion rack and meeting the modification needs of more types of off-road vehicles.

[0032] Mounting plate 4 is provided with a plurality of expansion holes 8, including various shapes such as waist-shaped holes and circular holes, distributed on the mounting plate or isolation base. The design of expansion holes 8 allows users to securely fasten various accessories, such as rear spotlights, radio antennas, flagpoles, shovels, etc., to mounting plate 4 using bolts or other fasteners.

[0033] This diverse hole pattern design allows users to flexibly adjust the device's installation position based on actual needs, enhancing the functionality and flexibility of the expansion rack. Furthermore, the waist-shaped hole design allows for the adjustment of accessory installation positions within a certain range, helping to improve installation accuracy and avoid the problems caused by improper positioning during device installation.

[0034] In addition, the present invention also designs a number of avoidance grooves 6 on the bottom plate 1, which correspond to the positions of the mounting plate 4. The main function of these avoidance grooves 6 is to provide avoidance space for the bolts or other connecting parts of the accessories during the installation process to avoid direct contact or pressure on the bottom plate.

[0035] The design of the airtight groove 6 effectively prevents additional stress concentration on the base plate caused by accessory installation, improving the installation convenience and stability of the entire structure, thereby avoiding stress damage caused by improper installation. This makes the expansion rack more durable during use and less susceptible to damage due to external forces.

[0036] Compared to conventional technologies, the present invention utilizes a design where the support frame 2 is connected to the vehicle via mechanical fasteners, resulting in a more secure connection between the expansion frame and the tailgate. Compared to conventional welded connections, this design significantly reduces vibration transmission during bumpy rides, preventing the risk of flange weld cracking caused by prolonged vibrations. This extends the service life and safety of the expansion frame.

[0037] The clearing area 7 formed by the mounting plate 4 and the isolation seat 5 allows the present invention to accommodate vehicles equipped with cameras, while also leaving more space for accessory installation, thus improving the compatibility of the expansion rack. Furthermore, the design of the clearing slot 6 further optimizes accessory installation, avoiding assembly issues caused by improperly positioned connectors and greatly simplifying the installation process.

[0038] Furthermore, the expansion holes 8 on the mounting plate 4 offer a flexible design, accommodating various shapes, such as waist-shaped and round holes, to suit various installation requirements. Whether it's a rear spotlight, antenna, or other outdoor equipment, these holes can be securely mounted on the expansion rack. This design makes the expansion rack more versatile for outdoor activities, greatly satisfying the diverse needs of off-road vehicle users.

[0039] Furthermore, by optimizing the structure and connection method, the present invention effectively avoids the problem of the expansion rack body falling off due to tearing of the welds in traditional welding methods, thereby improving fatigue resistance. Furthermore, the mechanical connection method reduces the metal fatigue caused by welding, making the expansion rack more durable in long-term use and reducing the impact of environmental factors such as moisture and corrosion on the welded parts, thereby extending the product's service life and making it suitable for widespread use.

[0040] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A car tailgate expansion rack, characterized by: It comprises a base plate (1), with support frames (2) extending rearward from the upper and lower sides of the base plate (1), and mounting holes (3) provided on the support frames (2) for connection with the vehicle; The front of the base plate (1) is further provided with a mounting plate (4), and an isolation seat (5) is extended backward from the edge of the mounting plate (4). The mounting plate (4) is connected to the base plate (1) through the isolation seat (5), and the isolation seat (5) forms an air avoidance zone (7) between the mounting plates (4); a plurality of expansion holes (8) are opened on the mounting plate (4), and accessories to be installed are connected to the mounting plate (4) through the expansion holes (8).

2. The automobile tailgate expansion rack according to claim 1, characterized in that: The expansion holes (8) are a plurality of waist-shaped holes arranged on the mounting plate (4) or the isolation seat (5).

3. The automobile tailgate expansion rack according to claim 1, characterized in that: The expansion holes (8) are a plurality of circular holes arranged on the mounting plate (4) or the isolation seat (5).

4. The automobile tailgate expansion rack according to claim 1, characterized in that: The expansion holes (8) are a plurality of waist-shaped holes and circular holes arranged on the mounting plate (4) or the isolation seat (5), and the waist-shaped holes and the circular holes are distributed at intervals.

5. The automobile tailgate expansion rack according to claim 1, characterized in that: A plurality of air-avoiding grooves (6) are provided on the bottom plate (1) at positions corresponding to the mounting plate (4).

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