A variable stiffness frame

Abstract

The application discloses a variable-rigidity frame and relates to the technical field of automobile parts. The variable-rigidity frame comprises a first frame, a second frame, a first sliding block, a second sliding block, a third sliding block and a fourth sliding block. The first sliding block, the second sliding block, the third sliding block and the fourth sliding block are respectively hinged with a first sliding rod, a second sliding rod, a third sliding rod and a fourth sliding rod. The first sliding rod, the second sliding rod, the third sliding rod and the fourth sliding rod are respectively connected with a third arc spring, a first arc spring, a fourth arc spring and a second arc spring. The third arc spring, the first arc spring, the fourth arc spring and the second arc spring are respectively hinged with a second supporting rod, a first supporting rod, a fourth supporting rod and a third supporting rod. The variable-rigidity frame can conveniently and quickly change different configurations, so that the frame has different rigidity. Different from a traditional fixed frame, the variable-rigidity frame can meet the requirements of vehicle driving on different terrains, and greatly meets the requirements of current vehicle driving.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, and in particular to a variable stiffness vehicle frame. Background Technology

[0002] In recent years, with the continuous development of the manufacturing industry, the automotive industry has also developed rapidly, and the requirements for vehicle performance are getting higher and higher. In recent years, with the introduction of new materials and designs, the performance of the chassis has been continuously improved, but it still does not fully meet people's requirements.

[0003] Due to the variable operating environment and numerous working conditions involved in vehicle operation, the stress on the chassis is quite complex. For example, when driving on mountain roads, vehicles encounter special driving conditions such as rapid acceleration, sudden braking, and sharp turns. Faced with these complex driving conditions, the chassis, as the main carrier, is subjected to various forces and torques, including those from the engine, causing the chassis to shrink, affecting its service life, and even threatening the safety of the entire vehicle. The structural characteristics and stiffness of the chassis have a significant impact on vehicle performance, and people's requirements for chassis performance are also increasing. Chassis design is often a lengthy and difficult process, making it difficult to design reliable products that meet the needs of the modern market. Therefore, it is necessary to design a convenient chassis that allows vehicles to simultaneously meet different operational requirements while possessing safe performance.

[0004] Currently, there is no innovative invention design that can both easily change the rigidity of the frame and achieve this in a relatively easy way. Summary of the Invention

[0005] The main objective of this invention is to provide a variable stiffness frame to solve the above-mentioned problems.

[0006] To achieve the above objectives, the present invention provides a variable stiffness vehicle frame, including a first frame and a second frame. Both the first and second frames have upper and lower first sliding grooves on their walls, with the middle of the two first sliding grooves connected by a second sliding groove. A first sliding frame and a third sliding frame are respectively provided on both sides of the first frame, each with a sliding track communicating with the two first sliding grooves of the first frame. A second sliding frame and a fourth sliding frame are respectively provided on both sides of the second frame, each with a sliding track communicating with the two first sliding grooves of the second frame. The first sliding frame is slidably connected to the second sliding frame, and the third sliding frame... The first car frame is slidably connected to the fourth sliding car frame; a first slider and a second slider are slidably disposed in the first sliding groove of the first car frame, and a third slider and a fourth slider are slidably disposed in the first sliding groove of the second car frame; a first slide rod, a second slide rod, a third slide rod, and a fourth slide rod are respectively hinged to the first slider, the second slider, the third slide rod, and the fourth slide rod, and a third arc spring, a first arc spring, a fourth arc spring, and a second arc spring are respectively connected to the ends of the first slide rod, the second slide rod, the third slide rod, and the fourth arc spring; a second support rod, a first support rod, a fourth support rod, and a third support rod are respectively hinged to the middle parts of the third arc spring, the first arc spring, the fourth arc spring, and the second arc spring.

[0007] Furthermore, the ends of the second support rod, the first support rod, the fourth support rod, and the third support rod are all magnetic.

[0008] Furthermore, the ends of the third, first, fourth, and second arc-shaped springs are all magnetic.

[0009] Furthermore, holes are provided at the connection between the first sliding frame and the second sliding frame, and holes are provided at the connection between the third sliding frame and the fourth sliding frame.

[0010] Furthermore, the first frame is connected to the first sliding frame via a first connecting pin and a first positioning pin, and the second frame is connected to the second sliding frame via a first connecting pin and a first positioning pin; the first frame is connected to the third sliding frame via a second connecting pin and a second positioning pin, and the second frame is connected to the fourth sliding frame via a second connecting pin and a second positioning pin.

[0011] Furthermore, wheels are provided on the first sliding frame, the third sliding frame, the second sliding frame, and the fourth sliding frame.

[0012] The present invention has the following beneficial effects:

[0013] 1. The frame has different configurations in different sliding positions, thereby changing the frame stiffness and enabling the vehicle to adapt to different road conditions.

[0014] 2. The support rods in the frame are magnetic at their ends, which can attract each other. The support rod ends are magnetically attracted to each other in different configurations, which provides a reliable connection. The arc spring and the support rod are hinged, which provides a relatively reliable configuration transformation capability.

[0015] 3. When the frame is in the initial configuration, i.e., the first configuration, the support rod and the arc spring are in an opposing state, which enhances the rigidity of the frame and makes the vehicle more efficient. In the second configuration, it becomes a double-layer opposing structure, which allows the vehicle to pass through narrow areas. In the third configuration, the two arc springs become a semi-circular structure. In the fourth configuration, every two arc springs form a semi-circular structure, at which point the frame has a stronger ability to resist external interference. In the fifth configuration, the arc springs slide out of the sliding frame, at which point the frame consumes less energy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the first configuration of a variable stiffness frame according to the present invention.

[0017] Figure 2 , 3 This is a schematic diagram of the second configuration of a variable stiffness frame according to the present invention.

[0018] Figure 4 This is a schematic diagram of the structure of a variable stiffness frame in the third configuration of the present invention.

[0019] Figure 5 This is a schematic diagram of the fourth configuration of a variable stiffness frame according to the present invention.

[0020] Figure 6 This is a schematic diagram of the fifth configuration of a variable stiffness frame according to the present invention.

[0021] Figure 7 This is a partially enlarged view of a variable stiffness frame slider rod according to the present invention.

[0022] Figure 8 This is a partially enlarged view of the first frame of a variable stiffness vehicle frame according to the present invention.

[0023] Figure 9 This is a partially enlarged view of the third sliding frame of a variable stiffness frame according to the present invention.

[0024] Figure 10 This is a partially enlarged view of the fourth sliding frame of a variable stiffness frame according to the present invention.

[0025] Wherein, 1-first wheel; 2-first curved spring; 3-second curved spring; 4-first sliding frame; 5-second sliding frame; 6-second wheel; 7-first connecting pin; 8-first positioning pin; 9-first support rod; 10-second support rod; 11-third wheel; 12-third curved spring; 13-third sliding frame; 14-fourth curved spring; 15-fourth sliding frame; 16-fourth wheel; 17-second connecting pin; 18-second positioning pin; 19-third support rod; 20-fourth support rod; 21-first frame; 22-second frame; 23-first slider; 24-first slide bar; 25-second slider; 26-second slide bar; 27-third slide bar; 28-third slider; 29-fourth slide bar; 30-fourth slider; 31-first groove; 32-second groove. Detailed Implementation

[0026] To achieve the above objectives and effects, the technical means and structure adopted by the present invention will be described in detail with reference to the accompanying drawings, focusing on the features and functions of the preferred embodiments of the present invention.

[0027] like Figure 1-10 As shown, the present invention provides a variable stiffness frame, including a first wheel 1, a first arc spring 2, a second arc spring 3, a first sliding frame 4, a second sliding frame 5, a second wheel 6, a first connecting pin 7, a first positioning pin 8, a first support rod 9, a second support rod 10, a third wheel 11, a third arc spring 12, a third sliding frame 13, a fourth arc spring 14, a fourth sliding frame 15, a fourth wheel 16, a second connecting pin 17, a second positioning pin 18, a third support rod 19, a fourth support rod 20, a first frame 21, a second frame 22, a first slider 23, a first sliding rod 24, a second slider 25, a second sliding rod 26, a third sliding rod 27, a third slider 28, a fourth sliding rod 29, a fourth slider 30, a first groove 31, and a second groove 32.

[0028] The specific structure and connection method are as follows:

[0029] The end of the first support rod 9 is fixed to the first arc spring 2. One end of the first arc spring 2 is connected to the second slide rod 26, and the other end slides in the first slide groove 31 of the first frame 21. One end of the second slide rod 26 is connected to the first arc spring 2, and the other end is connected to the second slider 25. The second slider 25 also slides in the first slide groove 31 of the first frame 21.

[0030] The end of the second support rod 10 is fixed to the third arc spring 12. One end of the third arc spring 12 is connected to the first slide rod 24, and the other end slides in the first slide groove 31 of the first frame 21. One end of the first slide rod 24 is connected to the third arc spring 12, and the other end is connected to the first slider 23. The first slider 23 also slides in the first slide groove 31 of the first frame 21.

[0031] The end of the third support rod 19 is fixed to the second arc spring 3. One end of the second arc spring 3 is fixed to the fourth slide rod 29, and the other end slides in the first slide groove 31 of the second frame 22. One end of the fourth slide rod 29 is connected to the second arc spring 3, and the other end is connected to the fourth slider 30. The fourth slider 30 also slides in the first slide groove 31 of the second frame 22.

[0032] The end of the fourth support rod 20 is fixed to the fourth arc spring 14. One end of the fourth arc spring 14 is fixed to the third slide rod 27, and the other end slides in the first slide groove 31 of the second frame 22. One end of the third slide rod 27 is connected to the fourth arc spring 14, and the other end is connected to the third slider 28. The third slider 28 also slides in the first slide groove 31 of the second frame 22.

[0033] The working principle of this invention is:

[0034] When the frame is in its natural state, the first slider 23, the second slider 25, the third slider 28, and the fourth slider 30 are respectively located at the four corners of the rectangular frame. At this time, the first slider 24, the second slider 26, the third slider 27, and the fourth slider 29 are respectively parallel to the third sliding frame 13, the first sliding frame 4, the fourth sliding frame 15, and the second sliding frame 5. The first arc spring 2, the second arc spring 3, the third arc spring 12, and the fourth arc spring 14 are respectively arranged in a square with the center of the apex of the rectangular frame, occupying one-quarter of the frame. The ends of the first arc spring 2 and the third arc spring 12 abut against the first groove 31 in the first frame 21, and the ends of the second arc spring 3 and the fourth arc spring 14 abut against the first groove 31 in the second frame 22. At this time, the first support rod 9, the second support rod 10, the third support rod 19, and the fourth support rod 20 are respectively in the middle of the arc springs connected to them, forming an "X" shape. This is the first configuration of the frame.

[0035] In the first configuration, the third slider 28 slides from the bottom to the top in the slide rail of the fourth sliding frame 15, causing the end of the fourth arc spring 14 to slide from the bottom of the first slide rail 31 to the top of the second slide rail 32 of the second frame 22. At the same time, the fourth support rod 20 also slides from the bottom of the frame to the top. The second arc spring 3 and the fourth arc spring 14 are elastic and can be tightly connected and separated. The fourth slider 30 slides from the bottom to the top in the slide rail of the second sliding frame 5, causing the second arc spring 14 to slide from the bottom to the top of the slide rail of the second sliding frame 22. The end of spring 3 slides from the lower end of the first groove 31 to the upper end of the second groove 32 of the second frame 22, while the third support rod 19 also slides from the bottom of the frame to the top; the first sliding frame 4 slides toward the second sliding frame 5 until engaged; the third sliding frame 13 slides toward the fourth sliding frame 15 until engaged; the frame retracts, and the ends of the four arc-shaped springs attract each other magnetically, respectively at the upper and lower ends; the four springs are in the second configuration of the frame.

[0036] In the first configuration, the second slider 25 slides from the lower end to the upper end in the slide rail of the first sliding frame 4, driving the first arc spring 2 to slide from the lower end of the first slide rail 31 to the upper end of the first slide rail 31 through the second slide rail 32 of the first frame 21. At this time, the first arc spring 2 and the third arc spring 12 are in a vertically misaligned state in the second slide rail 32 of the first frame 21. The second slider 25 slides along the first slide rail 31 at the upper end of the first frame 21 towards the third sliding frame 13. The second slider 25 stops when it reaches the second slide rail 32. At this time, the right end of the first arc spring 2 is close to the first slide rail 32. The three sliding frame 13; the first slider 23 slides towards the first sliding frame 4 in the first groove 31 at the lower end of the first frame 21. The first slider 23 stops when it reaches the second groove 32. At this time, the left end of the third arc spring 12 is close to the first sliding frame 4. Then, the second slider 25 slides down through the second groove 32 in the first frame 21, driving the first arc spring 2 and the first support rod 9 to move downward. Finally, the two sliders are placed parallel and close to each other in the first groove 31 at the lower end. The third slider 27 and the fourth slider 29 are in the initial state, which constitutes the third configuration of the frame.

[0037] Based on the third configuration, the third slider 28 slides from the lower end to the upper end in the slide rail of the fourth sliding frame 15, driving the fourth arc spring 14 to slide from the lower end of the first slide rail 31 to the upper end of the second slide rail 32 of the second frame 22. At this time, the fourth arc spring 14 and the second arc spring 3 are in an up-down misaligned state in the second slide rail 32 of the second frame 22. The third slider 28 slides along the first slide rail 31 at the upper end of the second frame 22 toward the second sliding frame 5. The second slider 25 stops when it reaches the second slide rail 32. At this time, the left end of the fourth arc spring 14 is close to the second sliding frame 5.

[0038] The fourth slider 30 slides towards the fourth sliding frame 15 in the first groove 31 at the lower end of the second frame 22, causing the fourth slider 29, the second arc spring 3, and the third support rod 19 to slide parallel to the fourth sliding frame 15. The fourth slider 30 stops when it reaches the second groove 32. At this time, the right end of the second arc spring 3 is close to the fourth sliding frame 15. Then, the third slider 28 slides down through the second groove 32 in the second frame 22, causing the fourth arc spring 14 and the fourth support rod 20 to move downward. Finally, the third slider 27 and the fourth slider 29 are also placed parallel to each other in the middle of the second frame 22, forming the fourth configuration of the frame.

[0039] When the frame is in the fourth configuration, the first slider 23 slides from the lower end of the first slide groove 31 to the upper end of the first slide groove 31 through the second slide groove 32 of the first frame 21. The first slider 24 swings counterclockwise 90 degrees with the first slider 23 as the center. The first slider 24 is close to the upper end of the first slide groove 31 of the first frame 21. At this time, the first slider 23 moves along the upper end of the first slide groove 31 of the first frame 21 towards the first sliding frame 4. After the first slider 23 is close to the first sliding frame 4, the first slider 24 swings clockwise 90 degrees with the first slider 23 as the center until it is close to the first sliding frame 4. At the same time, it drives the third arc spring 12 and the second support rod 10 to pass through the hole at the connection between the first sliding frame 4 and the second sliding frame 5, which is equivalent to translating half the distance of the first frame 21.

[0040] At the same time, the second slide rod 26 rotates 90 degrees clockwise around the second slider 25, and the second slide rod 26 is close to the first slide groove 31 at the lower end of the first frame 21. At this time, the second slider 25 slides along the first slide groove 31 at the lower end of the first frame 21 towards the third sliding frame 13. After the second slider 25 is close to the third sliding frame 13, the second slide rod 26 rotates 90 degrees counterclockwise around the second slider 25 until it is close to the third sliding frame 13. At the same time, it drives the first arc spring 2 and the first support rod 9 to pass through the hole at the connection between the third sliding frame 13 and the fourth sliding frame 15.

[0041] The third slider 28 slides from the lower end of the second frame 22 in the first groove 31 to the upper end of the second frame 22 through the second groove 32. The third slider 27 rotates 90 degrees clockwise around the third slider 28 and is close to the upper end of the first groove 31 of the second frame 22. At this time, the third slider 28 moves along the upper end of the second frame 22 towards the second sliding frame 5. After the third slider 28 is close to the second sliding frame 5, the third slider 27 rotates 90 degrees counterclockwise around the third slider 28 until it is close to the second sliding frame 5. At the same time, it drives the fourth arc spring 14 and the fourth support rod 20 to pass through the hole at the connection between the first sliding frame 4 and the second sliding frame 5.

[0042] The fourth slide bar 29 rotates 90 degrees counterclockwise around the fourth slider 30 until it is close to the first slide groove 31 at the lower end of the second frame 22. At this time, the fourth slider 30 slides along the first slide groove 31 at the lower end of the second frame 22 toward the fourth sliding frame 15. After the fourth slider 30 is close to the fourth sliding frame 15, the fourth slide bar 29 rotates 90 degrees clockwise around the fourth slider 30 until it is close to the fourth sliding frame 15. At the same time, it drives the second arc spring 3 and the third support rod 19 to pass through the hole at the connection between the third sliding frame 13 and the fourth sliding frame 15. Finally, the fifth configuration of the frame is achieved.

[0043] The above description is only a preferred embodiment of the present invention and not all embodiments. Anyone should know that structural changes made under the guidance of the present invention, and any technical solutions that are the same as or similar to the present invention, are within the protection scope of the present invention.

Claims

1. A variable stiffness vehicle frame, characterized in that, The vehicle includes a first frame and a second frame. Both the first and second frames have two first sliding grooves on their walls, connected at the middle by a second sliding groove. A first sliding frame and a third sliding frame are respectively provided on both sides of the first frame. Each of the first and third sliding frames has a slide rail connecting to the two first sliding grooves of the first frame. Similarly, a second sliding frame and a fourth sliding frame are respectively provided on both sides of the second frame. Both the second and fourth sliding frames have slide rails connecting to the two first sliding grooves of the second frame. The first and second sliding frames are slidably connected, and the third and fourth sliding frames are slidably connected. The system features a sliding connection; a first slider and a second slider are slidably disposed within a first groove of the first frame, and a third slider and a fourth slider are slidably disposed within a first groove of the second frame; a first slide rod, a second slide rod, a third slide rod, and a fourth slide rod are respectively hinged to the first slider, the second slider, the third slide rod, and the fourth slide rod, and the ends of the first slide rod, the second slide rod, the third slide rod, and the fourth slide rod are respectively connected to a third arc-shaped spring, a first arc-shaped spring, a fourth arc-shaped spring, and a second arc-shaped spring; a second support rod, a first support rod, a fourth support rod, and a third support rod are respectively hinged to the middle portions of the third arc-shaped spring, the first arc-shaped spring, the fourth arc-shaped spring, and the second arc-shaped spring.

2. A variable stiffness frame as described in claim 1, characterized in that, The ends of the second support rod, the first support rod, the fourth support rod, and the third support rod are all magnetic.

3. A variable stiffness frame as described in claim 1, characterized in that, The ends of the third, first, fourth, and second arc-shaped springs are all magnetic.

4. A variable stiffness frame as described in claim 1, characterized in that, A hole is provided at the connection between the first sliding frame and the second sliding frame, and a hole is provided at the connection between the third sliding frame and the fourth sliding frame.

5. A variable stiffness frame as described in claim 1, characterized in that, The first frame is connected to the first sliding frame via a first connecting pin and a first positioning pin; the second frame is connected to the second sliding frame via a first connecting pin and a first positioning pin; the first frame is connected to the third sliding frame via a second connecting pin and a second positioning pin; and the second frame is connected to the fourth sliding frame via a second connecting pin and a second positioning pin.

6. A variable stiffness frame as described in claim 1, characterized in that, Wheels are provided on the first sliding frame, the third sliding frame, the second sliding frame and the fourth sliding frame.

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