An electronic accelerator pedal assembly

Abstract

The utility model relates to accelerator pedal technology field, concretely is an electronic accelerator pedal assembly, including base, the side surface fixed connection of base has wire harness socket, the front surface rotationally connected with pivot of base, the outer surface fixed connection with hinged seat of pivot, the front surface fixed connection with treadle lever of hinged seat, the position of the outer surface of base away from wire harness socket is provided with hysteresis mechanism, hysteresis mechanism includes mounting seat, connecting seat, hysteresis ring, limit cap and locating cap, in the utility model, when the driver steps down the pedal, the connecting seat is driven with pivot and hysteresis ring synchronous rotation, the constant friction resistance moment is exerted to hysteresis ring by arc scraping plate, and the hysteresis moment is produced, thereby eliminating the idle stroke and the jitter when pedal rebound, improve linear foot feeling, and reduce sensor signal fluctuation, and when its dismounting, need not dismount base, just need to aim at locating cap position.

Description

Technical Field

[0001] This utility model relates to the field of accelerator pedal technology, specifically an electronic accelerator pedal assembly. Background Technology

[0002] The electronic throttle pedal assembly provides signals to the vehicle's ECU by converting the pedal angle into electronic signals. The ECU then calculates and processes these signals to control the throttle opening. The accuracy of the internal signal conversion is extremely important, thus placing very high demands on the structure. The throttle pedal is also a very important component among the operating parts, and its operational safety and structural reliability are also very important. Announcement No. CN221292985U describes an electronic throttle pedal assembly with hysteresis force, including a pedal arm, a mounting base, and a pivot. The pedal arm is pivotally connected to the side of the mounting base via the pivot. The upper rear section of the pedal arm has a pedal surface, and the upper front section of the pedal arm has a spring seat. The mounting base has a limiting post arranged opposite to the spring seat, and a return spring is installed between the spring seat and the limiting post. The aforementioned device has many hysteresis structure parts, which are located inside the base and have a long assembly tolerance chain. This means that after the internal springs fatigue, the undamaged hysteresis mechanism needs to be disassembled simultaneously, or the base needs to be disassembled after the hysteresis mechanism is damaged, increasing unnecessary workload. Utility Model Content

[0003] The purpose of this invention is to provide an electronic throttle pedal assembly to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An electronic throttle pedal assembly includes a base, a wiring harness connector fixedly connected to the side surface of the base, a rotating shaft rotatably connected to the front surface of the base, a hinge seat fixedly connected to the outer surface of the rotating shaft, and a pedal lever fixedly connected to the front surface of the hinge seat. A hysteresis mechanism is provided on the outer surface of the base at the location of the cable insertion port. The hysteresis mechanism includes a mounting base, a connecting base, a hysteresis ring, a limiting cover, and a positioning cover. The mounting base is fixedly connected to the side surface of the base. The connecting base is detachably connected to the outer surface of the rotating shaft. The hysteresis ring is nested and connected to the outer surface of the connecting base. The limiting cover is detachably connected to one end of the rotating shaft. A second screw is threaded onto the outer surface of the limiting cover. The positioning cover is detachably connected to the outer surface of the mounting base. An arc-shaped scraper is fixedly connected to the inner surface of the positioning cover.

[0005] Furthermore, through holes are provided on the outer surface of the base near the four corners.

[0006] Furthermore, the outer surface of the connector is provided with a square groove, and the inner surface of the hysteresis ring is integrally provided with a square protrusion, which matches the square groove.

[0007] Furthermore, the limiting cover and the positioning cover are fixedly connected by an arc-shaped scraper and a rotating shaft, the arc-shaped scraper and the hysteresis ring are slidably connected, and the positioning cover is fixedly connected by a threaded assembly and a mounting base.

[0008] Furthermore, the outer surface of the pedal is threaded with a first screw, and the pedal and the hinge seat are fixedly connected by the first screw. A groove is provided on the outer surface of the pedal near the position of the first screw.

[0009] Furthermore, a pedal is fixedly connected to the upper surface of the pedal rod, and an arc-shaped groove is formed on the upper surface of the pedal.

[0010] Compared with the prior art, the beneficial effects of this utility model are: The inner arc surface of the arc-shaped scraper and the outer periphery of the hysteresis ring form a controllable dry friction pair. When the driver presses the pedal, the shaft drives the connecting seat and the hysteresis ring to rotate synchronously. The arc-shaped scraper applies a constant frictional resistance torque to the hysteresis ring, generating a hysteresis torque, thereby eliminating the empty travel and vibration when the pedal rebounds, improving the linear foot feel, and reducing sensor signal fluctuations. Moreover, when disassembling it, it is not necessary to remove the base; only the positioning cover needs to be removed. The groove is a controlled fracture line. Once the frontal impact force exceeds the threshold, the pedal will break and sink along the groove to prevent the driver's lower leg from being fractured. The arc groove can guide rainwater away from the sole of the shoe and maintain the proper coefficient of friction. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of this utility model from another angle; Figure 3 This is a schematic diagram of the disassembled structure of the hysteresis mechanism of this utility model; Figure 4 This is a schematic diagram of the positioning cover structure of this utility model; Figure 5 This is a schematic diagram of the pedal structure of this utility model.

[0012] In the diagram: 1. Base; 101. Through hole; 2. Wire harness socket; 3. Hinge seat; 301. Rotating shaft; 4. Step bar; 401. Groove; 402. Pedal; 403. Arc groove; 404. First screw; 5. Hysteresis mechanism; 501. Mounting seat; 502. Connecting seat; 503. Hysteresis ring; 504. Limiting cover; 505. Second screw; 506. Positioning cover; 507. Arc scraper. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-5 In this embodiment of the present invention, an electronic throttle pedal assembly includes a base 1, a wire harness socket 2 fixedly connected to the side surface of the base 1, a rotating shaft 301 rotatably connected to the front surface of the base 1, a hinge seat 3 fixedly connected to the outer surface of the rotating shaft 301, and a pedal 4 fixedly connected to the front surface of the hinge seat 3. A hysteresis mechanism 5 is provided on the outer surface of the base 1 at the position opposite to the cable insertion port 2. The hysteresis mechanism 5 includes a mounting base 501, a connecting base 502, a hysteresis ring 503, a limiting cover 504, and a positioning cover 506. The mounting base 501 is fixedly connected to the side surface of the base 1. The connecting base 502 is detachably connected to the outer surface of the rotating shaft 301. The hysteresis ring 503 is nested and connected to the outer surface of the connecting base 502. The limiting cover 504 is detachably connected to one end of the rotating shaft 301. A second screw 505 is threadedly connected to the outer surface of the limiting cover 504. The positioning cover 506 is detachably connected to the outer surface of the mounting base 501. An arc-shaped scraper 507 is fixedly connected to the inner surface of the positioning cover 506. The second screw 505 is a fixing component. By disassembling the screw and the corresponding threaded components, the hysteresis mechanism 5 can be disassembled.

[0015] Specifically, the inner arc surface of the arc-shaped scraper 507 and the outer circumferential surface of the hysteresis ring 503 maintain an interference of 0.1-0.3mm to form a controllable dry friction pair. When the driver presses the pedal, the rotating shaft 301 drives the connecting seat 502 and the hysteresis ring 503 to rotate synchronously. The arc-shaped scraper 507 applies a constant frictional resistance torque to the hysteresis ring 503, generating a hysteresis torque of 0.8±0.1N·m, thereby eliminating the free travel and vibration when the pedal rebounds, improving the linear foot feel, and reducing sensor signal fluctuations. The wiring harness connector 2 integrates the power supply inlet and signal outlet. The 12V / 5V regulated power supply of the whole vehicle is introduced into the Hall chip inside the base 1 through the ribbon cable and ECU connection. The dual redundant position signal 0-5V analog or PWM output is sent to the engine ECU to realize throttle opening control. It also achieves IP67 waterproof and dustproof rating through CPA latch and sealing ring, and prevents the risk of stalling caused by loose connectors.

[0016] Example 1 like Figure 1-5As shown, through holes 101 are provided on the outer surface of the base 1 near the four corners, and a first screw 404 is threaded onto the outer surface of the pedal 4. The pedal 4 and the hinge seat 3 are fixedly connected by the first screw 404, and a groove 401 is provided on the outer surface of the pedal 4 near the first screw 404.

[0017] In this embodiment, the through hole 101 is used to fix the base 1 to the vehicle firewall with 8mm bolts to ensure that the pedal assembly does not loosen under 800N pedal force. The groove 401 is a controlled fracture line. Once the frontal impact force exceeds the threshold, the pedal 4 breaks and sinks along the groove to avoid the driver's lower leg being fractured.

[0018] like Figure 1-5 As shown, a pedal 402 is fixedly connected to the upper surface of the pedal 4, and an arc-shaped groove 403 is formed on the upper surface of the pedal 402.

[0019] In this embodiment, the arc-shaped groove 403 can guide away rainwater from the sole of the shoe, maintaining the proper coefficient of friction.

[0020] Example 2 Based on Example 1, in order to overcome the problem of inconvenience in applying hysteresis force in Example 1.

[0021] like Figure 1-5 As shown, the outer surface of the connecting seat 502 is provided with a square groove, and the inner surface of the hysteresis ring 503 is integrally provided with a square protrusion. The square protrusion and the square groove are matched. The limiting cover 504 and the positioning cover 506 are fixedly connected to the rotating shaft 301 through the arc-shaped scraper 507. The arc-shaped scraper 507 and the hysteresis ring 503 are slidably connected. The positioning cover 506 is fixedly connected to the mounting seat 501 through a threaded assembly.

[0022] In this embodiment, the square protrusion and the square groove form a 0.05mm transition fit, so that the hysteresis ring 503 and the connecting seat 502 have no back clearance in the circumference, ensuring that the 0.8±0.1N·m hysteresis torque takes effect from the start of the pedal's free travel. The wrap angle design of the arc-shaped scraper plate 507 and the hysteresis ring 503 ensures strength while keeping the friction surface pressure ≤0.25MPa.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0024] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electronic throttle pedal assembly, comprising a base (1), wherein a wire harness connector (2) is fixedly connected to the side surface of the base (1), a rotating shaft (301) is rotatably connected to the front surface of the base (1), a hinge seat (3) is fixedly connected to the outer surface of the rotating shaft (301), and a pedal rod (4) is fixedly connected to the front surface of the hinge seat (3). Its features are, A hysteresis mechanism (5) is provided on the outer surface of the base (1) at the position of the cable insertion port (2). The hysteresis mechanism (5) includes: Mounting base (501) is fixedly connected to the side surface of base (1); The connecting seat (502) is detachably connected to the outer surface of the rotating shaft (301); Hysteresis ring (503) is nested and connected to the outer surface of connector (502); A limiting cover (504) is detachably connected to one end of a rotating shaft (301), and a second screw (505) is threaded onto the outer surface of the limiting cover (504). The positioning cover (506) is detachably connected to the outer surface of the mounting base (501), and an arc-shaped scraper (507) is fixedly connected to the inner surface of the positioning cover (506).

2. The electronic throttle pedal assembly according to claim 1, characterized in that, The base (1) has through holes (101) on its outer surface near the four corners.

3. The electronic throttle pedal assembly according to claim 1, characterized in that, The outer surface of the connector (502) is provided with a square groove, and the inner surface of the hysteresis ring (503) is integrally provided with a square protrusion, which matches the square groove.

4. The electronic throttle pedal assembly according to claim 1, characterized in that, The limiting cover (504) and the positioning cover (506) are fixedly connected by an arc-shaped scraper (507) and a rotating shaft (301). The arc-shaped scraper (507) and the hysteresis ring (503) are slidably connected. The positioning cover (506) is fixedly connected by a threaded assembly and a mounting base (501).

5. The electronic throttle pedal assembly according to claim 1, characterized in that, The outer surface of the pedal (4) is threaded with a first screw (404), and the pedal (4) and the hinge seat (3) are fixedly connected by the first screw (404). A groove (401) is provided on the outer surface of the pedal (4) near the first screw (404).

6. The electronic throttle pedal assembly according to claim 1, characterized in that, The upper surface of the foot bar (4) is fixedly connected to a pedal (402), and the upper surface of the pedal (402) is provided with an arc groove (403).

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