General vehicle body expansion piece

Abstract

The invention discloses a general vehicle body expansion piece which comprises a fixed base and an expansion connecting part. A 1 / 4 threaded connector is adopted to adapt to trunks of most vehicle types, the expansion function part is detachably connected with the universal installation assembly, and the use cost is reduced; two-step mounting and dismounting are convenient, and professional tools are not needed; the clamping groove locking mechanism is anti-seismic and anti-loose and absorbs the tolerance of the positioning hole, so that the structure is stable; the functions are diversified, the design is optimized, the practicability and flexibility of the trunk are effectively improved, and the problems that an existing expansion piece is poor in adaptation, difficult to install and single in function are solved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a universal body extension component. Background Technology

[0002] With the increasing number of cars on the road, consumers are demanding greater practicality and personalization from their vehicles. Currently, the market offers a wide variety of trunk extension parts, such as hooks, clotheslines, and lights. However, different car models have different trunk thread interface specifications, meaning existing extension parts are mostly custom-designed and not universally compatible. Consumers need to purchase new parts when changing models, resulting in high operating costs. Furthermore, some extension parts use adhesive fastening, which is prone to falling off after prolonged use and cannot withstand vibrations during driving, easily becoming loose. Additionally, the body positioning holes have machining tolerances, and existing extension parts lack tolerance compensation structures, leading to poor fit after installation. Summary of the Invention

[0003] The purpose of this invention is to provide a universal vehicle body extension component to solve the problems mentioned in the background section.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A universal vehicle body extension component includes a fixed base and an extension connection portion;

[0006] The fixed base includes a connecting screw, a tolerance adapter, and a first elastic element. The lower end of the connecting screw is provided with a limiting pressure plate. The upper part of the tolerance adapter is provided with a positioning cavity that matches the limiting pressure plate. The first elastic element is provided between the limiting pressure plate and the tolerance adapter. The lower part of the tolerance adapter is connected to the expansion connection part. The bottom of the expansion connection part is provided with a slot for connecting with external accessories.

[0007] Furthermore, the thread of the connecting screw is a standard 1 / 4-inch threaded interface.

[0008] Furthermore, a first elastic element receiving cavity is provided at the center of the bottom of the connecting screw, and the upper part of the first elastic element is accommodated in the first elastic element receiving cavity.

[0009] Furthermore, the upper part of the tolerance adapter seat is provided with an installation cavity, and the middle of the installation cavity is provided with a downwardly recessed positioning cavity. Both the positioning cavity and the limiting pressure plate are hexagonal.

[0010] Furthermore, the expansion member also includes a fixing connecting piece, which covers and fixes the top opening of the mounting cavity. A through hole is provided in the center of the fixing connecting piece, and the connecting screw passes through the through hole.

[0011] Furthermore, the fixed connecting piece, tolerance adapter seat, and extension connecting part are fixedly connected by screws.

[0012] Furthermore, a slot locking mechanism is provided between the tolerance adapter and the expansion connection. The slot locking mechanism includes a locking member and a second elastic element. The locking member is slidably disposed between the tolerance adapter and the expansion connection. One end of the locking member protrudes upward to form a pressing part, which is exposed outside the expansion connection. The other end of the locking member extends downward to form a locking part. A second elastic element receiving cavity is provided on the side of the locking part away from the pressing part. A locking cavity is provided on the upper part of the expansion connection. The locking part extends into the locking cavity. One end of the second elastic element is received in the second elastic element receiving cavity, and the other end abuts against the inner wall of the locking cavity.

[0013] Furthermore, the external accessory includes a connecting slider, which is detachably connected to the slot. The connecting slider is provided with a limiting groove, and when the connecting slider is engaged in the slot, the locking part can be engaged in the limiting groove.

[0014] Beneficial effects:

[0015] This invention uses a 1 / 4 threaded interface, which is compatible with the trunks of most car models. The expansion function parts and universal installation components can be detachably connected, reducing the cost of use. The two-step installation and disassembly are convenient and do not require professional tools. The slot locking mechanism is shockproof and anti-loosening and absorbs the tolerance of the positioning holes, making the structure stable. It has multiple functions and an optimized design, which effectively improves the practicality and flexibility of the trunk and solves the problems of poor compatibility, difficult installation and limited functionality of existing expansion parts. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 This is an exploded view of the present invention;

[0018] Figure 3 This is a cross-sectional view of the present invention and the connecting slider;

[0019] Figure 4 This is a schematic diagram of the overall structure of the present invention from another perspective;

[0020] Figure 5 This is a schematic diagram of the connecting screw in this invention;

[0021] Figure 6 This is a schematic diagram of the extended connection portion in this invention;

[0022] Figure 7 This is a top view of the tolerance adapter in this invention;

[0023] Figure 8 This is a schematic diagram showing the connection state of the hook according to the present invention.

[0024] The following are the labeling elements in the diagram: 1. Connecting screw; 2. Limiting pressure plate; 3. First elastic element; 4. Fixed connecting plate; 5. Through hole; 6. Tolerance adapter seat; 7. Mounting cavity; 8. Positioning cavity; 9. Locking element; 10. Pressing part; 11. Second elastic element; 12. Extending connecting part; 13. Connecting post; 14. Slot; 15. Locking part; 16. Second elastic element receiving cavity; 17. Connecting slider; 18. Limiting groove; 19. First elastic element receiving cavity; 20. Locking cavity; 21. Hook. Detailed Implementation

[0025] In the description of this embodiment, it should be noted that the terms "upper," "lower," "inner," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, unless otherwise explicitly specified and limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0026] In addition, unless otherwise specified, the components used in the following embodiments are all existing components, and their corresponding connection methods can also be achieved through conventional technical means, which will not be described in detail in this application. The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example

[0028] This embodiment provides a universal vehicle body extension component, such as... Figures 1 to 7 As shown, it includes a fixed base and an extension connection part 12.

[0029] Specifically, the fixed base is used to connect with the vehicle body and includes a connecting screw 1, a tolerance adapter 6, and a first elastic element 3. A limiting pressure plate 2 is provided at the lower end of the connecting screw 1. The thread of the connecting screw 1 is a 1 / 4-inch standard thread interface, which has good versatility and can match most automotive threaded holes on the market. A positioning cavity 8 adapted to the limiting pressure plate 2 is provided above the tolerance adapter 6. The connecting screw 1 is installed in the tolerance adapter 6, and the limiting pressure plate 2 can be placed in the positioning cavity 8. A first elastic element 3 is provided between the limiting pressure plate 2 and the tolerance adapter 6. In this embodiment, the first elastic element 3 is a spring. A first elastic element receiving cavity 19 is opened at the center of the bottom of the connecting screw 1, and the upper part of the first elastic element 3 is accommodated in the first elastic element receiving cavity 19 to provide stable support and positioning. The tolerance adapter 6 is connected to an extension connection part 12 below, and the bottom of the extension connection part 12 is provided with a slot 14 for connecting with external accessories.

[0030] Specifically, the upper part of the tolerance adapter 6 is provided with an installation cavity 7, and the bottom surface of the installation cavity 7 is provided with a downwardly recessed positioning cavity 8. Both the positioning cavity 8 and the limiting pressure plate 2 are regular hexagonal, which can effectively prevent relative rotation and allow slight adaptive wobble.

[0031] In this embodiment, a slot locking mechanism is provided between the tolerance adapter 6 and the expansion connection 12. The slot locking mechanism includes a locking member 9 and a second elastic element 11. The second elastic element 11 is also a spring. The locking member 9 is slidably disposed between the tolerance adapter 6 and the expansion connection 12. One end of the locking member 9 protrudes upward to form a pressing part 10, which is exposed outside the expansion connection 12. The other end of the locking member 9 extends downward to form a locking part 15. A second elastic element receiving cavity 16 is provided on the side of the locking part 15 facing away from the pressing part 10. A locking cavity 20 is provided on the upper part of the expansion connection 12. The locking part 15 extends into the locking cavity 20. One end of the second elastic element 11 is accommodated in the second elastic element receiving cavity 16, and the other end abuts against the inner wall of the locking cavity 20, thereby providing a continuous elastic restoring force for the locking member 9.

[0032] To complete the assembly, the extension also includes a fixing connecting piece 4, which covers and fixes the top opening of the mounting cavity 7. A through hole 5 is provided in the center of the fixing connecting piece 4, and the connecting screw 1 passes through the through hole 5, so that the limiting pressure piece 2 is located below the fixing connecting piece 4. The threaded part passes through the through hole 5 and is exposed to the outside for connecting the vehicle body.

[0033] Preferably, the fixed connecting piece 4 has 3 connecting holes, and the tolerance adapter 6 also has 3 connecting holes at corresponding positions. The expansion connecting part 12 has 3 connecting posts 13 at corresponding positions. The connecting posts 13 also have connecting holes inside. The connecting posts 13 pass through the connecting holes of the tolerance adapter 6 and the connecting holes of the fixed connecting piece 4 in sequence, and then are inserted into the connecting posts 13 from the top of the fixed connecting piece 4 by screws, thereby fixing the positions of the fixed connecting piece 4, the tolerance adapter 6 and the expansion connecting part 12.

[0034] In practical use, this extension can be used with various external accessories, such as hook 21, clothes drying rack, and lighting fixtures. Taking hook 21 as an example... Figure 8 As shown, a connecting slider 17 is provided at the top of the hook 21, which can be detachably engaged with the slot 14. The connecting slider 17 has a limiting groove 18. When the connecting slider 17 is fully pushed into the slot 14, under the push of the second elastic element 11, the locking part 15 of the locking member 9 automatically engages into the limiting groove 18 of the connecting slider 17, achieving a secure lock. When disassembly is required, simply press the pressing part 10 of the locking member 9 to disengage the locking part 15 from the limiting groove 18, allowing the connecting slider 17 to slide out.

[0035] Working principle and usage:

[0036] During installation, first screw the threaded end of the connecting screw 1 into the pre-set mounting hole on the vehicle body and tighten it. During this process, if there is unevenness or angular deviation on the vehicle body mounting surface, the first elastic element 3 in the fixed base will be compressed or released, thereby allowing the tolerance adapter 6, together with the entire extension connection 12, to generate a small range of floating sway under the guidance of the limiting pressure plate 2 and the regular hexagonal positioning cavity 8, so as to adaptively fit the mounting surface, which not only absorbs the assembly tolerance, but also ensures effective torque transmission through geometric anti-rotation. Subsequently, push the connecting slider 17 with the external accessories horizontally into the slot 14 at the bottom of the extension connection 12 with its slide rail aligned with it. When the connecting slider 17 moves to the end position, the limiting groove 18 on it is exactly aligned with the locking part 15 of the locking member 9. At this time, the second elastic element 11 pushes the locking part 15 to automatically spring into the limiting groove 18, realizing mechanical self-locking and ensuring that it will not loosen under vehicle vibration. During disassembly, simply press the pressing part 10 exposed on the side of the extension connection part 12 with your finger to overcome the resistance of the second elastic element 11 and drive the locking part 15 to completely exit from the limiting groove 18. Then the connecting slider 17 can be smoothly slid out of the slot 14 in the opposite direction to complete the quick separation. The whole process does not require tools, realizing the plug-and-play functionality and stable load-bearing of the accessories.

[0037] Although embodiments of the present invention have been described in the specification, these embodiments are merely illustrative and should not be construed as limiting the scope of protection of the present invention. Various omissions, substitutions, and modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A universal vehicle body extension component, characterized in that: Includes a fixed base and an extended connection part; The fixed base includes a connecting screw, a tolerance adapter, and a first elastic element. The lower end of the connecting screw is provided with a limiting pressure plate. The upper part of the tolerance adapter is provided with a positioning cavity that matches the limiting pressure plate. The first elastic element is provided between the limiting pressure plate and the tolerance adapter. The lower part of the tolerance adapter is connected to the expansion connection part. The bottom of the expansion connection part is provided with a slot for connecting with external accessories.

2. The universal vehicle body extension component according to claim 1, characterized in that: The connecting screw has a standard 1 / 4-inch thread.

3. The universal vehicle body extension component according to claim 1, characterized in that: The bottom center of the connecting screw has a first elastic element receiving cavity, and the upper part of the first elastic element is housed in the first elastic element receiving cavity.

4. The universal vehicle body extension component according to claim 1, characterized in that: The upper part of the tolerance adapter is provided with an installation cavity, and the middle of the installation cavity is provided with a downwardly recessed positioning cavity. Both the positioning cavity and the limiting pressure plate are regular hexagonal.

5. The universal vehicle body extension component according to claim 4, characterized in that: The expansion component also includes a fixing connecting piece, which covers and fixes the top opening of the mounting cavity. A through hole is provided in the center of the fixing connecting piece, and the connecting screw passes through the through hole.

6. The universal vehicle body extension component according to claim 5, characterized in that: The fixed connecting piece, tolerance adapter seat, and expansion connecting part are fixedly connected by screws.

7. The universal vehicle body extension component according to claim 1, characterized in that: A slot locking mechanism is provided between the tolerance adapter and the expansion connection. The slot locking mechanism includes a locking member and a second elastic element. The locking member is slidably disposed between the tolerance adapter and the expansion connection. One end of the locking member protrudes upward to form a pressing part, which is exposed outside the expansion connection. The other end of the locking member extends downward to form a locking part. A second elastic element receiving cavity is provided on the side of the locking part away from the pressing part. A locking cavity is provided at the upper part of the expansion connection. The locking part extends into the locking cavity. One end of the second elastic element is received in the second elastic element receiving cavity, and the other end abuts against the inner wall of the locking cavity.

8. The universal vehicle body extension component according to claim 7, characterized in that: The external accessory includes a connecting slider, which is detachably connected to the slot. The connecting slider is provided with a limiting groove, and when the connecting slider is engaged in the slot, the locking part can be engaged in the limiting groove.

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