Suspension type hydraulic mechanical integrated brake pedal assembly based on camel type frame

Abstract

The invention discloses a suspension type hydraulic mechanical integrated brake pedal assembly based on a camel type frame. The suspension type hydraulic mechanical integrated brake pedal assembly comprises the camel type frame, a supporting frame, a brake arm, a brake pedal, a hydraulic brake cylinder, a mechanical brake connecting rod, a parking arm, a parking pedal, a parking lock hook and a parking lock block. The camel-type frame is provided with a front camel section and a middle section, and the supporting frame is installed on the rear side of the front camel section. The brake arm is hinged to the supporting frame, the brake pedal and the brake arm are integrated, and an upper connecting lug and a lower connecting lug of the brake arm are connected with the hydraulic brake cylinder and the mechanical brake connecting rod respectively. The parking arm is hinged to the brake arm, and the parking pedal is hinged to the brake pedal and drives the parking arm to rotate, so that the parking lock hook and the parking lock block are clamped or separated. Hydraulic braking and mechanical braking are integrated through the camel type frame and the suspension type layout, multi-vehicle-type adaptation is achieved, and space is saved; redundant safety is provided by dual-mode braking, and safe unlocking is ensured by linkage of parking and an accelerator pedal; and man-machine engineering optimization reduces fatigue, and the method is suitable for low-speed electric vehicles.

Description

Technical Field

[0001] The invention relates to the technical field of low-speed electric vehicles, and in particular to a suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame. Background Art

[0002] In the prior art, the brake pedals of low-speed vehicles such as electric vehicles and golf carts generally adopt a split structure design, that is, the hydraulic brake and mechanical brake systems are independent of each other, resulting in the following technical problems: (1) Low space utilization: The split pedal requires the hydraulic pump, mechanical pull rod and parking mechanism to be arranged separately, occupying the lateral space of the cockpit and affecting the control flexibility; (2) Ergonomic defects: The angle between the traditional pedal and the floor is usually greater than 45°, and the angle between the sole of the foot and the calf is less than 75°, which can easily cause leg fatigue after long-term driving; (3) Complex assembly and maintenance: The split structure requires multiple calibrations of the hydraulic pipeline and the mechanical linkage mechanism, which is difficult and time-consuming to assemble.

[0003] Therefore, there is an urgent need for a brake pedal structure specifically for low-speed electric vehicles to optimize the interior space of the vehicle while solving the ergonomics and production assembly problems. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the brake pedal of a low-speed electric vehicle, the present invention provides a suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame.

[0005] The technical solution adopted by the present invention is as follows: a suspended hydraulic mechanical integrated brake pedal assembly based on a camel-shaped frame, comprising a camel-shaped frame, a support frame, a brake arm, a brake pedal, a hydraulic brake cylinder, a mechanical brake connecting rod, a parking arm, a parking pedal, a parking lock hook and a parking lock block; the camel-shaped frame has an upwardly arched front camel section and a horizontal middle section, and the support frame is installed on the rear side of the front camel section; the brake arm is hinged to the support frame in the form of a lever suspension, the brake pedal and the brake arm are installed as a whole, and the brake arm is provided with an upper connecting ear and a lower connecting ear. The upper connecting ear is transmission connected to the hydraulic brake cylinder, and the lower connecting ear is transmission connected to the mechanical brake connecting rod; the parking arm is hinged to the brake arm in the form of a lever suspension, and the parking pedal is hinged to the brake pedal, and the parking pedal is transmission connected to the rear end of the parking arm; the parking lock hook is fixed to the front end of the parking arm, and the parking lock block is fixed to the support frame, and the parking lock hook has two positions separated from or clamped with the parking lock block; the parking pedal drives the parking arm to rotate, so as to drive the parking lock hook to switch between two positions.

[0006] Preferably, the parking arm is arranged close to the brake arm, the parking pedal is arranged at the free end of the brake pedal, forming an integral pedal in appearance, and a parking rocker is arranged between the parking pedal and the rear end of the parking arm.

[0007] Preferably, a parking return spring is provided between the brake arm and the support frame, a parking arm return spring is provided between the parking arm and the brake arm, and a parking pedal return spring is provided between the parking pedal and the brake pedal.

[0008] Preferably, the brake arm is provided with a pressure block and a lever, which are used to drive the brake switch and the position sensor to operate respectively.

[0009] Preferably, it also includes a cam-shaped unlocking block, which is rotatably mounted on the support frame. The unlocking block is linked with the accelerator and the accelerator pedal assembly, contacts the parking arm and drives the parking arm to rotate.

[0010] Preferably, the accelerator and accelerator pedal assembly includes an accelerator, an accelerator arm and an accelerator pedal, and the accelerator arm is connected to the unlocking block through an unlocking connecting rod and an unlocking rocker rod.

[0011] Preferably, the accelerator is mounted on the support frame, an acceleration return spring is provided between the accelerator arm and the support frame, and the accelerator pedal and the brake pedal are at the same height position in a free state.

[0012] Preferably, an "I"-shaped static limit block is installed on the support frame, and a first dynamic limit block and a second dynamic limit block are respectively provided on the brake arm and the acceleration arm, and the first dynamic limit block and the second dynamic limit block are arranged on both sides of the static limit block and extend into the limit range of the static limit block.

[0013] Preferably, when the brake pedal and the accelerator pedal are in a free state, the angle between them and the plane where the middle section is located is 25°~35°.

[0014] Preferably, when the brake pedal and the accelerator pedal are in a free state, the angle between them and the driver's calf is 80° to 90°.

[0015] The present invention has the following beneficial effects: 1. Adaptability to multiple vehicle models: The support frame and brake arm adopt modular interface design. By quickly replacing the hydraulic brake cylinder or mechanical brake link assembly, the same frame platform can be adapted to three different brake types: hydraulic / mechanical / hydraulic-mechanical integration, reducing the cost of vehicle model modification and meeting the configuration requirements of different vehicle models; 2. Space integration and layout optimization: Through the suspension layout of the front camel section of the camel-shaped frame and the support frame, the hydraulic brake cylinder, mechanical brake connecting rod and parking mechanism are integrated in the same lateral area, reducing the lateral space occupation, adapting to the narrow cockpit layout of low-speed electric vehicles, and reducing the complexity of pipeline layout and shortening assembly time; 3. Improved ergonomics: The brake pedal and the accelerator pedal are at an angle of 80° to 90° to the calf in a free state, which conforms to the natural sitting posture of the human body, shortens the length of the pedaling force arm, and reduces the leg fatigue index during continuous operation; 4. Linkage safety protection: The accelerator pedal drives the unlocking block to rotate through the unlocking link and unlocking swing rod. When the accelerator pedal is pressed, the parking lock hook and the parking lock block are forcibly released, eliminating the risk of dragging caused by unreleased parking brakes and reducing the failure rate. 5. Dual-mode brake redundancy: The brake arm synchronously drives the hydraulic brake cylinder and the mechanical brake connecting rod to form a dual redundant system of hydraulic main brake + mechanical emergency brake, which can still provide a certain braking force in the event of hydraulic failure, thereby improving safety; 6. Precise stroke control: The cooperation between the static limit block and the dynamic limit block limits the swing angle of the brake arm and the accelerator arm within the design range, preventing mechanical interference caused by over-stroke and reducing the wear rate of components; 7. Automatic reset and durability: The reset mechanisms of the parking return spring, parking arm return spring, parking pedal return spring and acceleration return spring ensure that each component automatically returns to its original position after operation, ensuring the reliability of subsequent operations; 8. State monitoring integration: The brake arm pressure block and the lever trigger the brake switch and position sensor, providing real-time feedback on the brake pedal travel and parking status, and providing reliable driving data. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention (including a camel-shaped frame).

[0017] Figure 2 It is a three-dimensional schematic diagram of the hydraulic-mechanical dual braking mode of an embodiment of the present invention.

[0018] Figure 3 It is a left schematic diagram of the hydraulic mechanical dual braking mode of an embodiment of the present invention.

[0019] Figure 4 It is a schematic diagram of the explosion of the hydraulic-mechanical dual braking mode of an embodiment of the present invention.

[0020] Figure 5 It is a three-dimensional schematic diagram of the hydraulic braking mode of an embodiment of the present invention.

[0021] Figure 6 It is a three-dimensional schematic diagram of a mechanical braking mode according to an embodiment of the present invention.

[0022] Figure 7 It is a schematic diagram of the installation of the brake arm and the parking arm in the embodiment of the present invention.

[0023] Figure 8 It is a schematic diagram of the installation of the brake arm and the static limit block in an embodiment of the present invention.

[0024] Figure 9 It is a schematic diagram of the angles of the brake pedal and the accelerator pedal in the embodiments of the present invention.

[0025] Camel-shaped frame 1, front camel segment 1.1, middle segment 1.2; Support frame 2; Brake arm 3, upper connecting ear 3.1, lower connecting ear 3.2, pressure block 3.3, lever 3.4, first moving limit block 3.5; Brake pedal 4; Hydraulic brake cylinder 5; Mechanical brake connecting rod 6; Parking arm 7; Parking pedal 8; Parking lock hook 9, main hook groove 9.1, secondary groove 9.2; Parking lock block 10, anti-slip teeth 10.1; Parking rocker 11; Parking return spring 12; Parking arm return spring 13; Parking pedal return spring 14; Brake switch 15; Position sensor 16; Unlock block 17; Accelerator 18; Accelerator arm 19, second moving limit block 19.1; Accelerator pedal 20; Unlock connecting rod 21; Unlock swing rod 22; Accelerator return spring 23; Static limit block 24. Specific embodiments

[0026] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0027] In the embodiments, as Figures 1-6As shown, a suspended hydraulic mechanical integrated brake pedal assembly based on a camel-shaped frame includes a camel-shaped frame 1, a support frame 2, a brake arm 3, a brake pedal 4, a hydraulic brake cylinder 5, a mechanical brake connecting rod 6, a parking arm 7, a parking pedal 8, a parking lock hook 9 and a parking lock block 10; the camel-shaped frame 1 has an upwardly arched front camel section 1.1 and a horizontal middle section 1.2, and the support frame 2 is installed on the rear side of the front camel section 1.1; the brake arm 3 is hinged to the support frame 2 in the form of a lever suspension, the brake pedal 4 and the brake arm 3 are installed as a whole, and the brake arm 3 is provided with an upper connecting ear 3.1 The upper connecting ear 3.1 is connected to the hydraulic brake cylinder 5 in a transmission connection with the lower connecting ear 3.2, and the lower connecting ear 3.2 is connected to the mechanical brake connecting rod 6 in a transmission connection; the parking arm 7 is hinged to the brake arm 3 in the form of a lever suspension, the parking pedal 8 is hinged to the brake pedal 4, and the parking pedal 8 is connected to the rear end of the parking arm 7 in a transmission connection; the parking lock hook 9 is fixed to the front end of the parking arm 7, and the parking lock block 10 is fixed to the support frame 2, and the parking lock hook 9 has two positions of separation or clamping with the parking lock block 10; the parking pedal 8 drives the parking arm 7 to rotate to drive the parking lock hook 9 to switch between the two positions. This embodiment optimizes the spatial layout through the arched structure of the camel-shaped frame 1, and the suspension design of the support frame 2 integrates the hydraulic brake cylinder, the mechanical brake connecting rod and the parking mechanism in the same lateral area, reduces the lateral space occupation, adapts to the narrow cockpit layout of the low-speed electric vehicle, and reduces the complexity of the pipeline arrangement and shortens the assembly time. The support frame 2 and the brake arm 3 adopt a modular interface design, and the same frame platform can be adapted to hydraulic pressure ( Figure 5 ) / mechanical( Figure 6 ) / Hydraulic Mechanical Integration ( Figures 2-4 ) Three different brake types to reduce vehicle modification costs and meet the configuration requirements of different vehicle models.

[0028] In the embodiment, Figures 2-7 As shown, the parking arm 7 is arranged close to the brake arm 3, and the parking pedal 8 is arranged at the free end of the brake pedal 4, forming an integral pedal in appearance, and a parking rocker 11 is arranged between the parking pedal 8 and the rear end of the parking arm 7. The parking pedal 8 and the brake pedal 4 of this embodiment are not only integrated into one in terms of function, but also integrated into one in terms of appearance, which simplifies the overall structure and makes the pedal assembly more beautiful.

[0029] In the embodiment, Figures 2-7 As shown, a parking return spring 12 is provided between the brake arm 3 and the support frame 2, a parking arm return spring 13 is provided between the parking arm 7 and the brake arm 3, and a parking pedal return spring 14 is provided between the parking pedal 8 and the brake pedal 4. The parking return spring 12 adopts a tension spring to ensure sufficient return stroke; the parking arm return spring 13 and the parking pedal return spring 14 adopt a torsion spring, which is more suitable for a compact space. Each return mechanism ensures that each component automatically resets and ensures the reliability of subsequent operations.

[0030] In the embodiment, as Figure 3 , Figure 7 , Figure 8 shown, the brake arm 3 is provided with a pressing block 3.3 and a lever 3.4, which are respectively used to drive the brake switch 15 and the position sensor 16 to act. The brake switch 15 and the position sensor 16 can provide real-time feedback on the travel of the brake pedal and the parking state, providing reliable driving data and guaranteeing safe driving.

[0031] In the embodiment, as Figures 2-6 shown, it further includes a cam-shaped unlocking block 17, which is rotatably installed on the support frame 2. The unlocking block 17 is linked with the accelerator and the accelerator pedal assembly, contacts the parking arm 7 and drives the parking arm 7 to rotate. The accelerator and the accelerator pedal assembly include an accelerator 18, an accelerating arm 19 and an accelerator pedal 20. A transmission connection is provided between the accelerating arm 19 and the unlocking block 17 through an unlocking link 21 and an unlocking swing rod 22. The cam profile of the unlocking block 17 is precisely machined. When the accelerator pedal 20 is depressed, the unlocking block 17 is driven to rotate through the unlocking link 21 and the unlocking swing rod 22, forcibly releasing the engagement between the parking lock hook 9 and the parking lock block 10, eliminating the risk of dragging caused by the failure to release the parking brake and reducing the failure rate.

[0032] In the embodiment, as Figures 2-6 shown, the accelerator 18 is installed on the support frame 2. An accelerating return spring 23 is provided between the accelerating arm 19 and the support frame 2. The accelerator pedal 20 and the brake pedal 4 are at the same height position in the free state. The accelerating return spring 23 is a tension spring, which can automatically reset the accelerator pedal 20 and ensure sufficient stroke.

[0033] In the embodiment, as Figure 8 shown, an "I"-shaped static limit block 24 is installed on the support frame 2. A first moving limit block 3.5 and a second moving limit block 19.1 are respectively provided on the brake arm 3 and the accelerating arm 19. The first moving limit block 3.5 and the second moving limit block 19.1 are arranged on both sides of the static limit block 24 and extend into the limit range of the static limit block 24. The cooperation between the static limit block 24 and the first moving limit block 3.5 and the second moving limit block 19.1 limits the swing angles of the brake arm 3 and the accelerating arm 19 within the designed range, preventing mechanical interference caused by over-travel and reducing the wear rate of components. An adjustable bolt is provided on the static limit block 24 to facilitate the adjustment of the limit range.

[0034] In the embodiment, as Figure 4As shown, the parking lock hook 9 has a main hook groove 9.1 that matches the appearance of the parking lock block 10, and the hook bottom of the main hook groove 9.1 is provided with an inwardly concave secondary groove 9.2, and the parking lock block 10 is provided with an anti-skid tooth 10.1 on the side that is in contact with the main hook groove 9.1. The double-layer clamping structure of the main hook groove 9.1 and the secondary groove 9.2 prevents the parking lock hook 9 from being disengaged due to vibration; the anti-skid tooth 10.1 of the parking lock block 10 engages with the main hook groove 9.1 to increase friction, further avoiding loosening due to external interference in the parking state, and improving parking safety.

[0035] In the embodiment, Figure 9 As shown, in the free state, the angle α between the brake pedal 4 and the accelerator pedal 20 and the plane where the middle section 1.2 is located is 25°~35°, and the angle β between the brake pedal 4 and the accelerator pedal 20 and the driver's calf is 80°~90°. The angle α is preferably 30°, and the angle β is preferably 87°. The suspended structure ensures that the pedal stroke is greater than 80mm, which conforms to the natural pedaling posture of the human body, shortens the length of the pedaling force arm, and reduces the leg fatigue index of continuous operation.

[0036] Obviously, the above embodiments of the present invention are only examples for explaining the present invention, and are not intended to limit the implementation methods of the present invention. Other obvious changes or modifications derived from the essence of the present invention still fall within the protection scope of the present invention.

Claims

1. A suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame, characterized in that: It comprises a camel-shaped frame (1), a support frame (2), a brake arm (3), a brake pedal (4), a hydraulic brake cylinder (5), a mechanical brake connecting rod (6), a parking arm (7), a parking pedal (8), a parking lock hook (9) and a parking lock block (10); The camel-shaped frame (1) comprises an upwardly arched front camel section (1.1) and a horizontal middle section (1.2), and the support frame (2) is installed on the rear side of the front camel section (1.1); The brake arm (3) is hinged to the support frame (2) in the form of a lever suspension, the brake pedal (4) and the brake arm (3) are installed as a whole, and the brake arm (3) is provided with an upper connecting ear (3.1) and a lower connecting ear (3.2), the upper connecting ear (3.1) is transmission-connected to the hydraulic brake cylinder (5), and the lower connecting ear (3.2) is transmission-connected to the mechanical brake connecting rod (6); The parking arm (7) is hinged to the brake arm (3) in the form of a lever suspension, the parking pedal (8) is hinged to the brake pedal (4), and the parking pedal (8) is transmission-connected to the rear end of the parking arm (7); The parking lock hook (9) is fixed to the front end of the parking arm (7), the parking lock block (10) is fixed to the support frame (2), and the parking lock hook (9) has two positions for being separated from or engaged with the parking lock block (10); The parking pedal (8) drives the parking arm (7) to rotate, thereby driving the parking lock hook (9) to switch between two positions.

2. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 1 is characterized in that: The parking arm (7) is arranged close to the brake arm (3), and the parking pedal (8) is arranged at the free end of the brake pedal (4), forming an integral pedal in appearance, and a parking rocker (11) is arranged between the parking pedal (8) and the rear end of the parking arm (7).

3. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 2 is characterized in that: A parking return spring (12) is provided between the brake arm (3) and the support frame (2), a parking arm return spring (13) is provided between the parking arm (7) and the brake arm (3), and a parking pedal return spring (14) is provided between the parking pedal (8) and the brake pedal (4).

4. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 1 is characterized in that: The brake arm (3) is provided with a pressure block (3.3) and a lever (3.4), which are used to drive the brake switch (15) and the position sensor (16) to operate respectively.

5. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 1 is characterized in that: It also includes a cam-shaped unlocking block (17), which is rotatably mounted on the support frame (2). The unlocking block (17) is linked with the accelerator and the accelerator pedal assembly to contact the parking arm (7) and drive the parking arm (7) to rotate.

6. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 5 is characterized in that: The accelerator and accelerator pedal assembly comprises an accelerator (18), an accelerator arm (19) and an accelerator pedal (20); the accelerator arm (19) is transmission-connected to an unlocking block (17) via an unlocking connecting rod (21) and an unlocking rocker rod (22).

7. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 6 is characterized in that: The accelerator (18) is mounted on the support frame (2), an acceleration return spring (23) is provided between the acceleration arm (19) and the support frame (2), and the accelerator pedal (20) and the brake pedal (4) are at the same height in a free state.

8. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 6 is characterized in that: The support frame (2) is provided with an I-shaped static limit block (24); the brake arm (3) and the accelerator arm (19) are provided with a first dynamic limit block (3.5) and a second dynamic limit block (19.1) respectively; the first dynamic limit block (3.5) and the second dynamic limit block (19.1) are arranged on both sides of the static limit block (24) and extend into the limit range of the static limit block (24).

9. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 6, characterized in that: When the brake pedal (4) and the accelerator pedal (20) are in a free state, the angle between them and the plane in which the middle section (1.2) is located is 25° to 35°.

10. The suspended hydraulic-mechanical integrated brake pedal assembly based on a camel-shaped frame according to claim 6, characterized in that: In a free state, the brake pedal (4) and the accelerator pedal (20) form an angle of 80° to 90° with the driver's calf.

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