A swing arm type electric pedal for a vehicle

Abstract

The application provides a swing arm type electric pedal for a car, which has stable structure and comprises a fixed frame, a motor driving assembly installed on one side of the fixed frame, a plurality of supporting arms rotatably connected to the fixed frame, and a pedal body connected to the end of the supporting arms, wherein the motor driving assembly comprises a rotatable cam body, a bent push-pull rod rotatably connected to the distal end of the cam body, and two limiting parts for limiting the cam body when the cam body rotates; the crank rocker mechanism is used as the power expansion mechanism of the pedal, the cam is used as the driving part for the extension and retraction of the pedal, and the reliability of the mechanism during movement is ensured; the height of the pedal body from the ground is controlled by the length of the supporting arms or the angle between the supporting arms and the ground, so that the adaptability of the pedal to the car is improved, and the user has better experience.

Description

Technical Field

[0001] This invention relates to the field of automotive electric pedal design technology, and in particular to a structurally stable swing arm type automotive electric pedal. Background Technology

[0002] Most electric pedals currently on the market are multi-link pedals, with multiple links simultaneously involved in force application and retraction. This type of pedal structure suffers from poor stability, and its ground clearance is significantly affected by its own structure, making it suitable only for vehicles with low chassis, such as SUVs. When used in off-road vehicles with higher chassis, the driven link needs to be lengthened, which also lengthens the lever arm, increasing the force on the motor's active link and limiting points, thus reducing structural stability. Furthermore, this type of pedal design has significant limitations in ground clearance and pedal angle, resulting in low applicability and failing to meet the requirements of most vehicle models. The motor and retraction linkage structure of most electric pedals on the market are exposed under the chassis or on the side of the vehicle, severely affecting the vehicle's aesthetics and failing to provide adequate protection for the motor and electrical circuitry, posing certain safety hazards. In addition, the existing electric pedal structure relies heavily on the self-locking mechanism of the motor's worm gear, which also presents certain potential risks. Summary of the Invention

[0003] This invention proposes a structurally stable swing-arm type electric pedal for automobiles to solve the problems mentioned in the background art, such as limited applicability, high technological dependence, and safety hazards of existing electric pedals.

[0004] The technical solution of this invention is implemented as follows:

[0005] A structurally stable swing-arm type electric pedal for automobiles, comprising:

[0006] A fixed frame;

[0007] A motor drive assembly is installed on one side of a fixed frame. It includes a rotatable cam body and a bent push-pull rod rotatably connected to the far end of the cam body. It also includes two limiting parts that limit the cam body when it rotates.

[0008] A pedal assembly includes several support arms rotatably connected to a fixed frame, with the pedal body connected to the end of each support arm, and the support arm closer to the motor drive assembly hinged to the end of a curved push-pull rod.

[0009] When the pedal body is in the retracted state, the hinge point between the cam body and the curved push-pull rod is located at one of the limiting positions, and the rotation center of the cam body, the hinge center between the cam body and the curved push-pull rod, and the hinge center between the curved push-pull rod and the support arm are on the same line, so that the support arm is in a self-locking state under its own gravity.

[0010] Preferably, the pedal assembly further includes a bracing tube connected to the pedal body, with both ends of the bracing tube rotatably connected to the end positions of the support arm.

[0011] Preferably, the pedal assembly further includes mounting blocks fixedly connected to the fixed frame and located on both sides of the front end of the support arm, and the two mounting blocks are rotatably connected to the support arm.

[0012] Preferably, the pedal body is equipped with a limiting pad and a buffer pad that provide a cushioning effect when the pedal body retracts.

[0013] Preferably, the motor drive assembly further includes a motor bracket, a drive motor mounted on one side of the motor bracket, and an electrical control box mounted on the other side of the motor bracket, wherein the output end of the drive motor is connected to the cam body.

[0014] Preferably, the two limiting parts are located at the lower edge of the motor bracket, and the rotation center of the cam body is located on the motor bracket between the two limiting parts. The cam body is connected to the bent push rod through the cam pin, and a limiting buffer sleeve is sleeved on the outside of the cam pin. The limiting buffer sleeve can contact the edges of the two limiting parts when it moves with the cam body.

[0015] Preferably, it also includes an elastic auxiliary component connected to a support arm on the side away from the motor drive component; the elastic auxiliary component includes a tie rod rotatably connected to the support arm, a frame that forms an axial elastic movement with the tie rod, and an eye bolt connected to the end of the frame, the eye bolt being mounted on the fixed frame by a nut.

[0016] Preferably, the fixed frame is connected in sequence along its length to a front mounting base, a middle mounting base, and a rear mounting base, so as to connect to the vehicle chassis.

[0017] Preferably, the fixed frame is also equipped with several lighting components.

[0018] Preferably, it also includes a magnetic induction sensor installed at the door frame of the vehicle, with a magnet provided at the door corresponding to the magnetic induction sensor.

[0019] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0020] (1) The present invention uses a crank rocker mechanism as the power extension mechanism of the pedal. Whether the pedal is extending or retracting, the cam is always used as the driving element to ensure the reliability of the mechanism during movement.

[0021] (2) The height of the pedal body off the ground can be controlled by the length of the support arm itself or the angle between the support arm and the ground, thereby improving the adaptability between the pedal and the vehicle model and ensuring that the user has a better user experience.

[0022] (3) When the pedal is retracted, the line connecting the two holes of the bent push-pull rod coincides with the rotation center of the cam body. In this state, the support arm becomes the active component of the crank rocker mechanism. In this state, the support arm only has downward gravity and downward gravity of the pedal body. Therefore, the mechanism can be in a self-locking state, thereby improving the stability of the structure and reducing the dependence of the traditional electric pedal system on the motor worm gear self-locking mechanism.

[0023] (4) The present invention provides an elastic auxiliary component to keep the support arm taut in the pedal retraction state, which reduces the influence of manufacturing tolerance and installation tolerance on pedal locking, and ensures the stability of the pedal whether the vehicle is stationary or in motion. At the same time, it can pull the pedal during the retraction process, reduce the load on the motor, and enhance stability. During the pedal extension process, it can generate a certain resistance, thereby slowing down the speed of pedal swinging out, which is beneficial to improving safety during operation. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a perspective view of the present invention;

[0026] Figure 2 This is an exploded view of the present invention;

[0027] Figure 3 This is a perspective view of the pedal of the present invention in the extended state;

[0028] Figure 4 This is a perspective view of the fixing frame of the present invention;

[0029] Figure 5 This is a perspective view of the pedal assembly of the present invention;

[0030] Figure 6 This is a partial enlarged view of the pedal body of the present invention;

[0031] Figure 7 This is a perspective view of the support arm of the present invention;

[0032] Figure 8This is a perspective view of the motor drive assembly of the present invention;

[0033] Figure 9 This is an exploded view of the motor drive assembly of the present invention;

[0034] Figure 10 This is a three-dimensional installation structure diagram of the cam body of the present invention;

[0035] Figure 11 This is a cross-sectional view of the mounting structure of the cam body of the present invention;

[0036] Figure 12 This is a perspective view of the elastic auxiliary component of the present invention;

[0037] Figure 13 This is an exploded view of the elastic auxiliary component of the present invention;

[0038] Figure 14 This is a diagram showing the positional relationship between the support arm and the bent push-pull rod when the pedal body of the present invention is in the extended state;

[0039] Figure 15 This diagram shows the positional relationship between the support arm and the bent push-pull rod of the pedal body in the retracted state of the present invention.

[0040] in:

[0041] 1. Fixed frame; 101. Main sheet metal frame; 1011. Rectangular through hole; 102. End plate; 103. First support plate; 104. Second support plate; 105. Third support plate; 106. Fourth support plate; 107. Fifth support plate; 108. Long strip support plate;

[0042] 2. Front mounting bracket;

[0043] 3. Middle mounting bracket;

[0044] 4. Rear mounting bracket;

[0045] 5. Motor drive assembly; 501. Drive motor; 502. Motor bracket; 503. Electrical control box; 504. Bending push-pull rod; 505. Cam body; 506. Cam pin; 507. Limit buffer sleeve; 508. Motor connecting shaft; 509. Limiting part;

[0046] 6. Lighting components;

[0047] 7. Pedal assembly; 701. Pedal body; 7011. Strip hole; 702. Support arm; 7021. First mounting hole; 7022. Second mounting hole; 7023. Third mounting hole; 7024. Folding piece; 703. Mounting block; 704. Diagonal brace tube; 705. Limiting pad; 706. Buffer pad;

[0048] 8. Elastic auxiliary components; 801. Tie rod; 802. Frame; 8021. Hook-shaped part; 8022. Limiting groove; 803. Eye bolt; 804. Limiting block; 805. Spring; 806. Stop block; 807. Bushing; 808. Fixing component. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] As shown in the figure, a structurally stable swing-arm type electric pedal for automobiles includes:

[0051] A fixed frame 1; the fixed frame 1 includes a main sheet metal frame 101, which is a sheet metal structure with openings at both ends and an open top. A rectangular through hole 1011 is opened on its bottom surface. The size of the rectangular through hole 1011 matches the size of the pedal body 701, so that the pedal body 701 can pass through the rectangular through hole 1011 when moving downward and can move into the main sheet metal frame 101 when moving upward, thus achieving a hidden effect.

[0052] In addition, end plates 102 are fixed at both ends of the main sheet metal frame 101. Between the two end plates 102, a first support plate 103, a second support plate 104, a third support plate 105, a fourth support plate 106 and a fifth support plate 107 are installed in sequence inside the main sheet metal frame 101. Long support plates 108 are installed on these five support plates, thereby realizing the assembly of the overall structure of the fixed frame 1 and achieving a stable structure. In this example, the number of support plates can also be six, and no specific limitation is made here.

[0053] A motor drive assembly 5 is installed on one side of the fixed frame 1. Specifically, the motor drive assembly 5 is installed between the first support plate 103 and the near end plate 102. It includes a rotatable cam body 505 and a bent push-pull rod 504 rotatably connected to the far end of the cam body 505. It also includes two limiting parts 509 that limit the cam body 505 when it rotates.

[0054] Specifically, the motor drive assembly 5 further includes a motor bracket 502, a drive motor 501 mounted on one side of the motor bracket 502, and an electrical control box 503 mounted on the other side of the motor bracket 502. The output end of the drive motor 501 is connected to the cam body 505 through a motor connecting shaft 508. The motor connecting shaft 508 can enhance the stability of the cam body 505's fixed-axis rotation and enhance the connection stability between the drive motor 501 and the cam body 505. The motor bracket 502 is fixedly connected to the main sheet metal part and the first support plate 103 with carriage bolts. The electrical control box 503 has a controller to achieve the electrical control effect.

[0055] Specifically, two limiting parts 509 are provided at the lower edge of the motor bracket 502. The roots of the two limiting parts 509 are both arc-shaped structures, mainly used to match the limiting buffer sleeve 507. The rotation center of the cam body 505 is located on the motor bracket 502 between the two limiting parts 509. The cam body 505 is connected to the bent push rod 504 through the cam pin 506. The limiting buffer sleeve 507 is sleeved on the outside of the cam pin 506. When the limiting buffer sleeve 507 moves with the cam body 505, it can contact the edges of the two limiting parts 509. When the hinge point of the cam body 505 and the bent push rod 504 moves to different extreme positions, that is, the positions of the two limiting parts 509, a buffering effect can be achieved to avoid hard impact.

[0056] The working principle of the above-mentioned motor drive assembly 5 is as follows: after the drive motor 501 works, it drives the cam body 505 to rotate. When the cam body 505 rotates to different extreme positions, the bending push rod 504 is in different positions. Because the bending push rod 504 is in different positions, the support arm 702 connected to the bending push rod 504 can be in different states.

[0057] A pedal assembly 7 includes several support arms 702 rotatably connected to a fixed frame 1. In this example, there are two support arms 702, one close to the motor drive assembly 5 and the other away from the motor drive assembly 5. The end of the support arm 702 is connected to the pedal body 701. The support arm 702 close to the motor drive assembly 5 is hinged to the end of the curved push-pull rod 504. The lower front end of the support arm 702 has a first mounting hole 7021. The first mounting hole 7021 is rotatably connected to the curved push-pull rod 504 by a pin.

[0058] When the pedal body 701 is in the retracted state, the hinge point between the cam body 505 and the curved push-pull rod 504 is located at one of the limiting parts 509. The rotation center of the cam body 505, the hinge center between the cam body 505 and the curved push-pull rod 504, and the hinge center between the curved push-pull rod 504 and the support arm 702 are on the same line, so that the support arm 702 achieves self-locking under its own gravity.

[0059] Specifically, the pedal assembly 7 further includes a diagonal brace tube 704 connected to the pedal body 701. The two ends of the diagonal brace tube 704 are rotatably connected to the end positions of the support arm 702. The diagonal brace tube 704 passes through a strip hole 7011 opened on the surface of the pedal body 701, thereby confining the diagonal brace tube 704 within the strip hole 7011. The two ends of the diagonal brace tube 704 are connected to the third mounting hole 7023 at the rear end of the support arm 702 by a pin, thereby realizing the rotatable connection between the diagonal brace tube 704 and the support arm 702. In addition, the connection between the diagonal brace tube 704 and the support arm 702 can also be achieved by welding, which will not affect the movement of the pedal body 701.

[0060] Specifically, the pedal assembly 7 further includes mounting blocks 703 fixedly connected to the fixed frame 1 and located on both sides of the front end of the support arm 702. The two mounting blocks 703 are rotatably connected to the support arm 702. The two mounting blocks 703 serve as connectors to rotatably connect the support arm 702 to the fixed frame 1. A second mounting hole 7022 is provided above the front end of the support arm 702. The two mounting blocks 703 are connected in the middle to the second mounting hole 7022 by a pin, thereby realizing the rotatable connection between the mounting blocks 703 and the support arm 702.

[0061] Specifically, the pedal body 701 is equipped with a limiting pad 705 and a buffer pad 706 that provide a cushioning effect when the pedal body 701 retracts. The buffer pad 706 is made of soft rubber. When the pedal retracts, it first contacts the fixed frame 1, specifically the lower edges of the third support plate 105 and the fifth support plate 107. These two support plates have steps, and the step surface closer to the ground contacts the buffer pad 706 first. The buffer pad 706 is first compressed to absorb shock and noise. When compressed to a certain extent, the limiting pad 705 contacts the fixed frame 1. The limiting pad 705 is made of high-strength nylon material. After the limiting pad 705 contacts the motor, the motor stops moving. When the pedal extends to its limit position, the limiting pad 705 contacts and holds the end of the support arm 702, making the angle between the support arm 702 and the horizontal close to 90° and unable to interrupt the motor, thus forming a locking and stable mechanism.

[0062] More specifically, such as Figure 3 As shown, when the pedal is extended, the limiting pad 705 contacts the end of the support arm 702, thereby limiting the further swing of the support arm 702. This limiting structure can both enable the controller to trigger the circuit protection to shut down the drive motor 501 and the locking mechanism, and ensure that the pedal will not shake during use, thus enhancing the reliability of the device.

[0063] Specifically, it also includes an elastic auxiliary component 8, which is connected to the support arm 702 on the side away from the motor drive component 5. The elastic auxiliary component 8 includes a tie rod 801 rotatably connected to the support arm 702, a frame 802 that forms an axial elastic movement with the tie rod 801, and an eye bolt 803 connected to the end of the frame 802. The eye bolt is installed on the fixed frame 1 by a nut. A fixing member 808 is fitted at the round hole at the upper end of the tie rod 801. The fixing member 808 can be a rivet, pin, etc. A bushing 807 is installed between the fixing member 808 and the tie rod 801 to reduce friction. The fixing member 808 is fixedly installed at the position of the folding piece 7024 at the middle position of the upper end of the support arm 702, so that the tie rod 801 can rotate relative to the support arm 702.

[0064] More specifically, the elastic motion relationship between the tie rod 801 and the frame 802 is achieved using a spring 805, such as... Figure 12-13 As shown, the frame 802 is a frame structure with one open end. A hook-shaped part 8021 with an inward curve is formed in the middle of the opening. A spring 805 is provided inside the frame 802. The two hook-shaped parts 8021 can be locked onto the spring 805. In the free state, the spring 805 and the frame 802 support are relatively stationary. When the spring 805 is rotated, the distance between the end of the spring 805 and the end of the frame 802 can change. The pull rod 801 is located at the center of the spring 805, and a stop block 806 is installed at both ends of the spring 805. The stop block 806 has a rectangular hole in the center and slides with the pull rod 801. After the pull rod 801 passes through the two stop blocks 806, the limit position of the stop block 806 is limited at the end of the pull rod 801 by a limiting block 804.

[0065] Thus, the working principle of this elastic auxiliary component 8 is as follows: after the eye bolt 803 forms an integral structure with the frame 802, it is fixedly connected to the fixed frame 1 (in this example, the eye bolt 803 is connected to the third support plate 105), while the other end of the pull rod 801 is rotatably connected to the support arm 702. When the support arm 702 on the side closer to the drive motor 501 is subjected to force and rotates, it can drive the pedal body 701 to move downward. During the downward movement of the pedal body 701, the tail end of the support arm 702 connected to the elastic auxiliary component 8 is forced to move downward. This causes the front end of the support arm 702 to flip. During the flipping process, the pull rod 801 can be moved, causing the spring 805 to be compressed. This process provides some resistance to the drive motor 501 during the extension of the pedal body 701, thereby slowing down the swing speed of the pedal body 701. During the retraction of the pedal body 701, the spring 805 gradually returns to its original state from the compressed state, which can have a certain pulling effect on the pedal body 701, thereby reducing the load on the motor and enhancing the stability of the electric pedal during operation.

[0066] Specifically, the fixed frame 1 is connected in sequence along its length by a front mounting base 2, a middle mounting base 3, and a rear mounting base 4. The front mounting base 2, the middle mounting base 3, and the rear mounting base 4 are all mounted on the vehicle chassis so that the fixed frame 1 is connected to the vehicle chassis.

[0067] Specifically, the fixed frame 1 is also equipped with several lighting components 6. In this example, the lighting components 6 are set in two places. The lighting components 6 mainly include a lamp holder and a lamp. The lamp holder is bolted to the fixed frame 1, and the lamp is set on the lamp holder. The lamp is connected to the controller through wires. The drive motor 501, the controller, the lamp, and the electrical control box 503 are all set inside the main sheet metal frame 101, which protects the electrical equipment well. At the same time, the front mounting seat 2, the middle mounting seat 3, and the rear mounting seat 4 are also connected inside the main sheet metal frame 101, ensuring the practicality of the electric pedal while also ensuring the aesthetics of the electric pedal.

[0068] In addition, a magnetic induction sensor is installed inside the vehicle door frame, and a magnet is installed at the corresponding position on the door. The magnetic induction sensor is connected to a controller via wires. The controller is connected to the drive motor 501 and the vehicle power supply via circuit lines. When the door is opened, the controller controls the drive motor 501 to operate, thereby driving the cam body 505 to rotate to the desired position. Figure 14 As shown in the diagram, the pedal body 701 is in the extended state; when the door closes, the drive motor 501 drives the cam body 505 to reverse, causing the cam body 505 to rotate to the position shown in the diagram. Figure 15 As shown in the figure, the pedal is in the retracted state. In this state, points a, b, and c in the figure are on the same straight line. The driving component of the crank-rocker mechanism is the support arm 702. Its driving force comes from the weight of the support arm 702 itself and the weight of the pedal. However, the transmission angle is 0°. Therefore, the mechanism can achieve self-locking, thereby ensuring the stability of the structure, reducing the system's dependence on the self-locking of the motor worm gear, and enhancing the stability of the pedal.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A structurally stable swing-arm type electric pedal for automobiles, characterized in that, include: A fixed frame (1); A motor drive assembly (5) is installed on one side of a fixed frame (1). It includes a rotatable cam body (505) and a bent push-pull rod (504) rotatably connected to the far end of the cam body (505). It also includes two limiting parts (509) that limit the cam body (505) when it rotates. A pedal assembly (7) includes several support arms (702) rotatably connected to a fixed frame (1). The end of each support arm (702) is connected to a pedal body (701). The support arm (702) near the motor drive assembly (5) is hinged to the end of the curved push-pull rod (504). When the pedal body (701) is in the retracted state, the hinge point between the cam body (505) and the curved push rod (504) is located at one of the limiting parts (509), and the rotation center of the cam body (505), the hinge center between the cam body (505) and the curved push rod (504), and the hinge center between the curved push rod (504) and the support arm (702) are on the same line, so that the support arm (702) is in a self-locking state under its own gravity.

2. The structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: The pedal assembly (7) also includes a diagonal brace tube (704) connected to the pedal body (701), with both ends of the diagonal brace tube (704) rotatably connected to the end position of the support arm (702).

3. The structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: The pedal assembly (7) further includes mounting blocks (703) fixedly connected to the fixed frame (1) and located on both sides of the front end of the support arm (702). The two mounting blocks (703) are rotatably connected to the support arm (702).

4. The structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: The pedal body (701) is equipped with a limiting pad (705) and a buffer pad (706) that provide a cushioning effect when the pedal body (701) retracts.

5. A structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: The motor drive assembly (5) also includes a motor bracket (502), a drive motor (501) mounted on one side of the motor bracket (502), and an electrical control box (503) mounted on the other side of the motor bracket (502). The output end of the drive motor (501) is connected to the cam body (505).

6. A structurally stable swing-arm type electric pedal for automobiles according to claim 5, characterized in that: Two limiting parts (509) are provided at the lower edge of the motor bracket (502), and the rotation center of the cam body (505) is located on the motor bracket (502) between the two limiting parts (509). The cam body (505) is connected to the bent push rod (504) through the cam pin (506), and a limiting buffer sleeve (507) is provided on the outside of the cam pin (506). The limiting buffer sleeve (507) can contact the edges of the two limiting parts (509) when it moves with the cam body (505).

7. A structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: It also includes an elastic auxiliary component (8) connected to a support arm (702) on the side away from the motor drive component (5); the elastic auxiliary component (8) includes a tie rod (801) rotatably connected to the support arm (702), a frame (802) that forms an axial elastic movement with the tie rod (801), and an eye bolt (803) connected to the end of the frame (802), the eye bolt being installed on the fixed frame (1) by a nut.

8. A structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: The fixed frame (1) is connected in sequence along its length to a front mounting base (2), a middle mounting base (3), and a rear mounting base (4) so ​​as to connect to the vehicle chassis.

9. A structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: Several lighting components (6) are also installed on the fixed frame (1).

10. A structurally stable swing-arm type electric pedal for automobiles according to claim 1, characterized in that: It also includes a magnetic induction sensor installed on the door frame of the car, with a magnet located on the door corresponding to the magnetic induction sensor.

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