Lightweight steering wheel and processing technology thereof

Abstract

The application relates to a lightweight steering wheel and a processing technology thereof, and relates to the technical field of automobile equipment, and aims to make the steering wheel framework lighter; the steering wheel comprises a framework body, the framework body comprises a rim and a connecting assembly, a center frame is further arranged below the rim, the center frame and the connecting assembly are located on the inner side of the rim, the connecting assembly comprises a plurality of connecting frames, each connecting frame is a rod-shaped frame body, and the center frame is connected with the rim through the connecting frames. The application has the following effects: according to the application, the rim and the center frame can be connected through the connecting frames, the material amount for connecting the rim and the center frame is reduced, most of the area between the rim and the center frame is provided with a hollow structure, the volume of the framework body is reduced, the weight of the framework body is reduced, and the steering wheel is lighter.

Description

Technical Field

[0001] This application relates to the field of automotive equipment technology, and in particular to a lightweight steering wheel and its manufacturing process. Background Technology

[0002] With the continuous development of the social economy and the increasing level of science and technology, my country's automobile industry is also booming. As a wheel-shaped device in a car that controls the direction of travel, the steering wheel can convert the force applied by the driver to the edge of the steering wheel into torque and transmit it to the steering shaft, thereby causing the steering shaft to rotate. It plays an important role in the automobile industry.

[0003] Regarding the aforementioned technologies, in order to ensure sufficient strength and ease of driver rotation, traditional steering wheels generally have a large and thick frame, which easily leads to excessive weight and high manufacturing costs, making it difficult to meet the current requirements for lightweight operation and driving. Summary of the Invention

[0004] To make the steering wheel frame lighter, this application provides a lightweight steering wheel and its manufacturing process.

[0005] Firstly, this application provides a lightweight steering wheel, which adopts the following technical solution: A lightweight steering wheel and its manufacturing process are disclosed. The wheel includes a frame body, which includes a rim and a connecting assembly. A center frame is also provided below the rim. The center frame and the connecting assembly are both located on the inner side of the rim. The connecting assembly includes several connecting frames, each of which is a rod-shaped frame. The center frame is connected to the rim through the connecting frames.

[0006] By adopting the above technical solution, compared with the existing technology which makes the steering wheel frame larger and thicker, this application, through the setting of the rim and connecting components, enables the rim and the center frame to be connected by several connecting frames, thereby reducing the amount of material used to connect the rim and the center frame, and making most of the area between the rim and the center frame hollowed out, thereby reducing the volume and weight of the frame body, and making the steering wheel lighter.

[0007] Preferably, the central frame is recessed, the connecting assembly further includes a rotating frame, the connecting frame is connected to the rotating frame, the rotating frame is rotatably connected to the central frame, and the central frame is provided with a driving mechanism for driving the rotating frame to rotate.

[0008] By adopting the above technical solution and setting the center frame and rotating frame, the steering wheel of this application can be used in a vehicle in an autonomous driving state. In an autonomous driving state, the steering wheel body can rotate under the drive of the drive structure, thereby allowing the steering wheel to avoid the driver and achieve its own storage. This gives the driver more freedom of movement, allowing the driver to shift their attention to things they are interested in or to rest, thereby improving the driver's comfort.

[0009] Preferably, the driving mechanism includes a sliding frame, a sliding sleeve, and a linkage assembly. The sliding sleeve is slidably connected to the rotating frame, and the sliding sleeve is rotatably connected to one end of the sliding frame. The sliding frame is slidably connected to the central frame, and the linkage assembly is used to drive the sliding frame to slide along its own sliding direction.

[0010] By adopting the above technical solution and specifically configuring the drive mechanism, when the linkage component drives the sliding frame to slide into the car, the top of the sliding frame drives the sliding sleeve to move downward, thereby causing the sliding sleeve to slide relative to the rotating frame, and causing one end of the rotating frame to slide closer to the car interior, thus realizing the drive of the frame body to rotate. The existence of the sliding sleeve allows the sliding frame to slide in only one direction to drive the rotating frame, thereby saving the moving space of the sliding frame when driving the rotating frame to rotate.

[0011] Preferably, the rotating frame is slidably connected to the central frame, the sliding direction of the rotating frame is towards the central frame, the central frame is provided with a sliding groove for the rotating frame to slide, and the central frame is also provided with a driving component for driving the rotating frame to slide.

[0012] By adopting the above technical solution and setting the sliding connection of the rotating frame, the rotating frame can slide along the extension direction of the sliding groove towards the center frame under the drive of the driving component. This allows the frame body to retract towards the center frame under the drive of the driving component, thereby further improving the driver's activity space inside the vehicle and further improving the driver's comfort.

[0013] Preferably, the driving assembly includes a driving frame and a drive frame. One end of the driving frame is rotatably connected to the rotating frame, and the other end of the driving frame is rotatably connected to the drive frame. The drive frame is rotatably connected to the central frame. The central frame is also provided with a driving component, which is used to drive the drive frame to rotate.

[0014] By adopting the above technical solution and specifically configuring the drive components, the drive component can drive the drive frame to rotate, causing the drive frame to move and thus causing the drive frame to slide along the rotating frame connected to it. This achieves the drive for the rotating frame to slide, thereby further improving the driver's activity space inside the vehicle.

[0015] Preferably, the linkage assembly includes a linkage frame, a linkage block, and a linkage component. The linkage block is rotatably connected to the central frame, and the linkage block is slidably connected to the linkage frame. The sliding direction of the linkage frame relative to the linkage block is its own length direction. One end of the linkage frame is rotatably connected to the end of the sliding frame away from the sliding sleeve. The drive frame drives the linkage frame to rotate through the linkage component.

[0016] By adopting the above technical solution and setting the linkage components, when the drive frame rotates, it can drive the linkage frame to rotate through the linkage component. The rotation of the linkage frame causes the drive frame to slide into the car. Thus, the drive frame can drive the rotating frame to rotate at the same time as it drives the rotating frame to slide. This allows a single drive source to simultaneously drive the rotating frame in two motion states. At the same time, the presence of the linkage slider allows the linkage slider to slide relative to the linkage frame, thus ensuring the smooth sliding of the drive frame.

[0017] Preferably, the linkage component includes a linkage slider, which is rotatably connected to the end of the drive frame away from the drive frame, and is slidably connected to the linkage frame. The sliding direction of the linkage slider is the length direction of the linkage frame.

[0018] By adopting the above technical solution and configuring the linkage slider, when the drive frame rotates, the linkage slider can rotate along with the drive frame. At the same time, in order to adapt to the relative sliding of the linkage frame, the linkage slider can slide relative to the linkage frame while rotating and can also rotate on its own axis, thereby adapting to the transmission needs between the drive frame and the linkage frame and ensuring the smooth driving of the linkage components.

[0019] Preferably, the rotating frame is provided with a rotating shaft, the rotating shaft is provided with a rotating wheel, the rotating wheel is sleeved on the rotating shaft, the rotating wheel is rotatably connected to the rotating shaft, and the outer wall of the rotating wheel abuts against the inner wall of the sliding groove.

[0020] By adopting the above technical solution, the rotating wheel is configured to rotate relative to the rotating frame, thereby causing the rotating frame to slide against the inner wall of the sliding groove through the rotating wheel. This transforms the original sliding friction into rolling friction, thereby reducing the friction between the sliding groove and the rotating wheel, thus reducing the wear between the rotating frame and the sliding groove, and ensuring the smooth rotation of the rotating frame.

[0021] Preferably, the rim includes a rim frame, two circular ring frames, an edge frame, and several support frames. The rim frame, the edge frame, and each circular ring frame are arranged coaxially. The inner sidewall of the rim frame is connected to a connecting frame. The upper and lower ends of the rim frame are each connected to different circular ring frames. The edge frame is connected to the two circular ring frames through the support frames. The two circular ring frames are connected to each other through the support frames.

[0022] By adopting the above technical solution and making specific arrangements for the wheel rim, the wheel rim can be hollowed out, thereby reducing the mass of the wheel rim and making the wheel rim lighter. This, in turn, makes the steering wheel body lighter. At the same time, the presence of the support frame can also ensure the connection strength between the wheel rim frame, the ring frame, and the edge frame.

[0023] Secondly, this application provides a lightweight steering wheel manufacturing process, which adopts the following technical solution: A lightweight steering wheel manufacturing process includes the following steps: Casting rough blank: Select lightweight materials and cast the skeleton body and central frame into shape using casting equipment; Grinding the rough blank: The cast skeleton body and the central frame are ground using the grinding facilities inside the workshop; Assembly: Assemble the polished skeleton body with the central frame.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The design of the wheel rim and connecting components allows the wheel rim and the center frame to be connected by several connecting frames, thereby reducing the amount of material used to connect the wheel rim and the center frame. This also allows most of the area between the wheel rim and the center frame to be hollowed out, thereby reducing the volume and weight of the frame body and making the steering wheel lighter. 2. The arrangement of the center frame and the rotating frame allows the steering wheel of this application to be used in a vehicle in an autonomous driving state. In an autonomous driving state, the steering wheel body can rotate under the drive of the drive structure, thereby allowing the steering wheel to avoid the driver and achieve its own storage. This gives the driver more freedom of movement, allowing the driver to shift their attention to things they are interested in or to rest, thereby improving the driver's comfort. 3. The sliding connection of the rotating frame allows the rotating frame to slide along the extension direction of the sliding groove towards the center frame under the drive of the drive component. This allows the frame body to retract towards the center frame under the drive of the drive component, thereby further improving the driver's activity space inside the vehicle and further improving the driver's comfort. 4. The specific design of the wheel rim allows for a hollowed-out design, thereby reducing the mass of the wheel rim and making it lighter. This, in turn, makes the steering wheel body lighter. At the same time, the presence of the support frame ensures the connection strength between the wheel rim frame, the ring frame, and the edge frame. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the overall lightweight steering wheel in the embodiments of this application.

[0026] Figure 2 This is a schematic diagram illustrating the structure of the rim in an embodiment of this application.

[0027] Figure 3 This is a structural schematic diagram illustrating the driving component in the embodiments of this application.

[0028] Figure 4 This is a schematic diagram illustrating the structure of the driving component in the embodiments of this application.

[0029] Explanation of reference numerals in the attached drawings: 1. Frame body; 11. Wheel rim; 111. Wheel rim frame; 112. Ring frame; 113. Edge frame; 114. Support frame; 12. Connecting assembly; 121. Connecting frame; 122. Rotating frame; 1221. Rotating shaft; 1222. Sliding part; 2. Center frame; 21. Sliding groove; 3. Rotating wheel; 4. Drive mechanism; 41. Driving assembly; 411. Driving frame; 412. Driving frame; 42. Sliding frame; 43. Sliding sleeve; 44. Linkage assembly; 441. Linkage frame; 442. Linkage block; 443. Linkage component; 4431. Linkage slider; 5. Driving component. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0031] This application discloses a lightweight steering wheel. (See also...) Figure 1 The lightweight steering wheel includes a frame body 1 and a center frame 2. The frame body 1 includes a rim 11 and a connecting assembly 12. Both the center frame 2 and the connecting assembly 12 are located inside the rim 11, and the center frame 2 is located below the rim 11. The connecting assembly 12 includes several connecting brackets 121, each of which is a rod-shaped frame. The center frame 2 is connected to the inner side of the rim 11 through the connecting brackets 121.

[0032] Reference Figure 1 The wheel rim 11, connecting frame 121, and center frame 2 are all made of lightweight materials. Optionally, in this embodiment, the wheel rim 11, connecting frame 121, and center frame 2 are made of magnesium alloy. The center frame 2 is recessed, and its bottom end is used to connect to the steering shaft that controls the vehicle's steering.

[0033] Reference Figure 1 and Figure 2 The rim 11 includes a rim frame 111, two circular ring frames 112, an edge frame 113, and several support frames 114. The rim frame 111, the edge frame 113, and each circular ring frame 112 are arranged coaxially. The rim frame 111 is located inside the two circular ring frames 112, and the edge frame 113 is located outside the circular ring frames 112. The two circular ring frames 112 are located at the upper and lower ends of the rim frame 111, respectively, and are fixedly connected to the rim frame 111 by casting.

[0034] Reference Figure 1 and Figure 2 Optionally, the support frame 114 is divided into multiple groups, and the multiple groups of support frames 114 are arranged at equal angles around the axis of the edge frame 113. Each group is provided with three support frames 114, and the axes of the support frames 114 in each group are coplanar. The two ends of one support frame 114 in each group are respectively connected to two circular ring frames 112 by casting. One end of the other two support frames 114 in each group is fixedly connected to the side wall of the edge frame 113, and the other end of the two support frames 114 is fixedly connected to two different circular ring frames 112 respectively.

[0035] Reference Figure 1 and Figure 2 Optionally, the connecting frame 121 is configured in two sets, with the two sets of connecting frames 121 located on opposite sides of the central frame 2. Each set of connecting frames 121 contains two connecting frames 121, and the connecting frames 121 in each set are arranged along the width direction of the central frame 2. The cross-sectional area of ​​each connecting frame 121 at both ends along its length is larger than the cross-sectional area at its middle, in order to improve the connection strength with the parts connected to it. One end of each connecting frame 121 is fixedly connected to the inner wall of the wheel flange frame 111 by casting, and the end of each connecting frame 121 not connected to the wheel flange frame 111 is inclined downward.

[0036] Reference Figure 1 and Figure 2 The connecting assembly 12 also includes a rotating frame 122. Optionally, the number of rotating frames 122 is set to two. The rotating frames 122 are made of lightweight material. Optionally, in this embodiment, the rotating frames 122 are made of magnesium alloy. The two rotating frames 122 are arranged in a one-to-one correspondence with the two sets of connecting frames 121. In each set, the ends of the two connecting frames 121 away from the wheel flange frame 111 are fixedly connected to the corresponding rotating frame 122 by casting.

[0037] Reference Figure 3 and Figure 4 Each rotating frame 122 is provided with a rotating shaft 1221 on one side wall near the other rotating frame 122. The rotating shaft 1221 is integrally formed by casting with the side wall of the rotating frame 122 near the center frame 2.

[0038] Reference Figure 3 and Figure 4 Each rotating shaft 1221 is fitted with a rotating wheel 3, which is rotatably connected to the rotating shaft 1221 via bearings. Each central frame 2 is provided with a sliding groove 21. Optionally, the sliding groove 21 is an arc-shaped groove, and the extension direction of the sliding groove 21 is away from the wheel flange 111. Each rotating wheel 3 is located in the corresponding sliding groove 21, and the side wall of the rotating wheel 3 abuts against the inner side wall of the sliding groove 21. The central frame 2 is provided with a drive mechanism 4. Optionally, the number of drive mechanisms 4 is set to two, and they correspond one-to-one with the rotating frames 122.

[0039] Reference Figure 3 and Figure 4 Each drive mechanism 4 includes a drive assembly 41, which includes a drive frame 411 and a drive frame 412. One end of the drive frame 411 is sleeved on the rotation shaft 1221 of the corresponding rotating frame 122 and is rotatably connected to the corresponding rotation shaft 1221 via a bearing. The drive frame 411 is located inside the central frame 2. The other end of the drive frame 411 is rotatably connected to one end of the drive frame 412 via a pin, and the middle position of the drive frame 412 is rotatably connected to the central frame 2 via a pin.

[0040] Reference Figure 3 and Figure 4 The central frame 2 is also equipped with two driving components 5, each corresponding to a driving frame 412. Optionally, in this embodiment, the driving component 5 is a servo motor; in other embodiments, other components can drive the driving frame 412 to rotate. A brake device is provided on the servo motor body to lock the output shaft when the servo motor stops. Both the servo motor and the brake device are existing technologies and will not be described in detail. The servo motor body is fixedly mounted to the outer wall of the central frame 2 with bolts and a support. The middle position of the driving frame 412 is fixedly sleeved on the output shaft of the corresponding servo motor, enabling the servo motor to drive the driving frame 412 to rotate.

[0041] Reference Figure 3 and Figure 4 Initially, the rotating frame 122 is located at the upper end of the sliding groove 21. When the output shaft of the driving member 5 rotates, the driving member 5 drives the driving frame 412 to rotate. The rotation of the driving frame 412 causes the bottom end of the driving frame 411 to displace, thereby causing the driving frame 411 to move. During this process, the driving frame 411 rotates. Simultaneously, under the constraint of the sliding groove 21, the top end of the driving frame 411 moves along the sliding groove 21, thereby driving the rotating frame 122 and enabling the rotating frame 122 to slide along the sliding groove 21.

[0042] Reference Figure 3 and Figure 4 A sliding portion 1222 is also provided on the top of the rotating frame 122. One end of the sliding portion 1222 is located on one end of the rotating frame 122 along the central frame 2 and is integrally formed with the rotating frame 122 by casting. The end of the rotating frame 122 extends beyond one end of the central frame 2 along its own length direction. The other end of the sliding portion 1222 extends towards the center of the central frame 2 and is bent. The bending direction of the sliding portion 1222 is along the length direction of the central frame 2 and extends towards the other end of the central frame 2.

[0043] Reference Figure 3 and Figure 4 Each drive mechanism 4 further includes a sliding frame 42, a sliding sleeve 43, and a linkage assembly 44. The linkage assembly 44 includes a linkage frame 441, a linkage block 442, and a linkage member 443. Each linkage member 443 includes a linkage slider 4431. The sliding sleeve 43 is sleeved on the sliding part 1222 of the corresponding rotating frame 122 and is slidably connected to the corresponding sliding part 1222. The sliding direction of the sliding sleeve 43 is the extension direction of the sliding part 1222.

[0044] Reference Figure 3 and Figure 4 The top end of the sliding frame 42 is rotatably connected to the sliding sleeve 43 via a pin. The bottom end of the sliding frame 42 extends downwards and is slidably connected to the center frame 2. The sliding frame 42 is in contact with the inner wall of the center frame 2, and the sliding direction of the sliding frame 42 is its own length direction. Both ends of the center frame 2 along its own length direction are recessed downwards to avoid the sliding of the sliding frame 42.

[0045] Reference Figure 3 and Figure 4 The bottom end of the sliding frame 42 is rotatably connected to one end of the linkage frame 441 by a pin. The other end of the linkage frame 441 extends away from the driving frame 411. Each linkage slider 4431 is sleeved on the other end of the corresponding linkage frame 441 and is slidably connected to the linkage frame 441. The sliding direction of the linkage slider 4431 is the length direction of the linkage frame 441.

[0046] Reference Figure 3 and Figure 4 Each linkage block 442 is rotatably connected to the side wall of the central frame 2 via a pin. Each linkage block 442 is sleeved on the linkage frame 441 and slidably connected to the linkage frame 441. The sliding direction of the linkage frame 441 relative to the linkage block 442 is its own length direction.

[0047] Reference Figure 3 and Figure 4When the driving component 5 drives the driving frame 412 to rotate, the driving frame 412 causes the linkage slider 4431 to shift. At this time, under the action of the linkage frame 441, the linkage slider 4431 rotates relative to the driving frame 412, thereby causing the linkage block 442 to drive the linkage frame 441 to rotate. Since the linkage frame 441 and the linkage block 442 are slidably connected, and the end of the linkage frame 441 connected to the sliding frame 42 is always located on a straight line along the length of the sliding frame 42, the linkage frame 441 will slide relative to the linkage block 442. This causes the bottom end of the linkage frame 441 to shift along the straight line along the length of the sliding frame 42, gradually moving away from the linkage block 442, thus driving the sliding of the sliding frame 42. This allows the rotating frame 122 to rotate downwards, enabling the driving component 5 to simultaneously drive the rotation and sliding of the rotating frame 122.

[0048] The implementation principle of a lightweight steering wheel according to an embodiment of this application is as follows: When a car using the steering wheel of this application is in autonomous driving mode, in order to improve the driver's freedom of movement, the output shaft of the drive component 5 rotates, thereby causing the drive component 5 to drive the drive frame 412 to rotate. The rotation of the drive frame 412 causes the drive frame 411 to slide, thereby causing the rotating frame 122 to slide. During this process, the drive frame 412 drives the linkage slider 4431 to move, thereby causing the linkage frame 441 to move and rotate under the restriction and action of the linkage slider 4431, the linkage block 442, and the sliding frame 42, thereby causing the sliding frame 42 to slide, and thus driving the rotating frame 122 to rotate. The sliding and rotation of the rotating frame 122 drives the wheel rim 11 to rotate and slide through the connecting frame 121, thereby achieving a certain degree of avoidance of the frame body 1, thereby improving the driver's freedom of movement and enhancing the driver's comfort.

[0049] This application also discloses a lightweight steering wheel manufacturing process, including the following steps: S1. Casting rough blanks: Select lightweight materials and cast the rough blanks of the skeleton body 1 and the central frame 2 using casting equipment. S2. Cooling the blank: Remove the blanks of the skeleton body 1 and the center frame 2 from the mold cavity and cool them through a cooling device; S3. Grinding the rough blank: The rough blanks of the cast skeleton body 1 and the center frame 2 are ground by the grinding set in the workshop. S4. Manufacturing parts; In the machining workshop, the parts required for the drive mechanism 4, such as the sliding frame 42 and the sliding sleeve 43, are manufactured. S5. Install drive mechanism 4: Install drive component 5 on center frame 2, and install drive frame 412 on output shaft of drive component 5. Then install linkage block 442 on center frame 2, and then install linkage frame 441, linkage slider 4431 and drive frame 411. S6. Assembly: Install the rotating wheel 3 and the drive frame 411 onto the rotating shaft 1221, then put the sliding frame 42 onto the sliding part 1222, then install both ends of the sliding frame 42 onto the sliding frame 42 and the linkage frame 441 respectively, and install both ends of the drive frame 411 onto the drive frame 412 and the rotating shaft 1221 respectively.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A lightweight steering wheel, comprising a frame body (1), characterized in that: The frame body (1) includes a rim (11) and a connecting component (12). A central frame (2) is also provided below the rim (11). The central frame (2) and the connecting component (12) are both located inside the rim (11). The connecting component (12) includes several connecting frames (121). Each connecting frame (121) is a rod-shaped frame. The central frame (2) is connected to the rim (11) through the connecting frames (121). The central frame (2) is recessed, and the connecting component (12) further includes a rotating frame (122). The connecting frame (121) is connected to the rotating frame (122), and the rotating frame (122) is rotatably connected to the central frame (2). The central frame (2) is provided with a driving mechanism (4) for driving the rotating frame (122) to rotate. The driving mechanism (4) includes a sliding frame (42), a sliding sleeve (43), and a linkage component (44). The sliding sleeve (43) is slidably connected to the rotating frame (122), and the sliding sleeve (43) is rotatably connected to one end of the sliding frame (42). The sliding frame (42) is slidably connected to the center frame (2). The linkage component (44) is used to drive the sliding frame (42) to slide along its own sliding direction. The rotating frame (122) is also slidably connected to the central frame (2). The sliding direction of the rotating frame (122) is closer to the central frame (2). The central frame (2) is provided with a sliding groove (21) for the rotating frame (122) to slide. The central frame (2) is also provided with a driving component (41) for driving the rotating frame (122) to slide. The drive assembly (41) includes a drive frame (411) and a drive frame (412). One end of the drive frame (411) is rotatably connected to the rotating frame (122), and the other end of the drive frame (411) is rotatably connected to the drive frame (412). The drive frame (412) is rotatably connected to the center frame (2). The center frame (2) is also provided with a drive component (5), which is used to drive the drive frame (412) to rotate. The rotating frame (122) is provided with a rotating shaft (1221), and a rotating wheel (3) is provided on the rotating shaft (1221). The rotating wheel (3) is sleeved on the rotating shaft (1221), and the rotating wheel (3) is rotatably connected to the rotating shaft (1221). The outer wall of the rotating wheel (3) abuts against the inner wall of the sliding groove (21).

2. A lightweight steering wheel according to claim 1, characterized in that: The linkage assembly (44) includes a linkage frame (441), a linkage block (442), and a linkage component (443). The linkage block (442) is rotatably connected to the center frame (2), and the linkage block (442) is slidably connected to the linkage frame (441). The sliding direction of the linkage frame (441) relative to the linkage block (442) is its own length direction. One end of the linkage frame (441) is rotatably connected to the end of the sliding frame (42) away from the sliding sleeve (43). The drive frame (412) drives the linkage frame (441) to rotate through the linkage component (443).

3. A lightweight steering wheel according to claim 2, characterized in that: The linkage component (443) includes a linkage slider (4431), which is rotatably connected to one end of the drive frame (412) away from the drive frame (411). The linkage slider (4431) is slidably connected to the linkage frame (441), and the sliding direction of the linkage slider (4431) is the length direction of the linkage frame (441).

4. A lightweight steering wheel according to claim 1, characterized in that: The rim (11) includes a rim frame (111), two ring frames (112), an edge frame (113), and several support frames (114). The rim frame (111), the edge frame (113), and each ring frame (112) are arranged coaxially. The inner sidewall of the rim frame (111) is connected to the connecting frame (121). The upper and lower ends of the rim frame (111) are respectively connected to the two ring frames (112). The edge frame (113) is connected to the two ring frames (112) through the support frame (114). The two ring frames (112) are connected to each other through the support frame (114).

5. A lightweight steering wheel manufacturing process for manufacturing the lightweight steering wheel as described in claim 1, characterized in that: Includes the following steps: Casting rough blank: Select lightweight materials and cast the skeleton body (1) and the central frame (2) into shape using casting equipment; Grinding the rough blank: The cast skeleton body (1) and the center frame (2) are ground by the grinding device inside the workshop; Assembly: Assemble the polished skeleton body (1) with the center frame (2).

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