Brake pedal assembly capable of adjusting pressure angle

Abstract

The brake pedal assembly comprises an external pressure receiving device, a hydraulic conversion device, a hydraulic proportion adjusting device and a brake pedal pressure angle adjusting device, the brake pedal pressure angle adjusting device comprises a guide rail, a first base and a second base, and the first base and the second base are both installed on the guide rail in a sliding mode. The external pressure receiving device is rotationally installed on the first base, the hydraulic conversion device is rotationally installed on the second base, and the external pressure receiving device is connected with the hydraulic conversion device through the hydraulic proportion adjusting device. According to the utility model, the pressure angle of the brake pedal can be changed, and the positions of the brake pedal and the main cylinder can be steplessly adjusted, so that the ergonomics requirements of drivers with different heights are met, and the problems of discontinuous position adjusting range and single pressure angle of the brake pedal in the prior art are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile braking systems, and in particular to a brake pedal assembly with adjustable pressure angle. Background Art

[0002] The process of generating braking force includes multiple sub-processes, such as receiving external pressure and converting it. During this process, physical parameters such as mass, axle load ratio, and center of mass height vary significantly between different racing cars, as do the physical characteristics of different drivers. Therefore, during actual racing car tuning, the fore-and-aft position of the brake pedal must be frequently adjusted. The force feedback from the brake pedal is also adjusted by varying the acute angle (i.e., the pressure angle) between the brake pedal and the master cylinder to improve the car's handling and ride smoothness. However, existing brake pedal assemblies are difficult to adjust and fail to meet the ergonomic requirements of drivers of varying heights. Therefore, the present invention proposes a brake pedal assembly with an adjustable pressure angle. Utility Model Content

[0003] An embodiment of the present application provides a brake pedal assembly with adjustable pressure angle, which can effectively solve the problems of discontinuous adjustable range of brake pedal position and single pressure angle in the prior art.

[0004] In view of this, the present application provides a brake pedal assembly with adjustable pressure angle, comprising: an external pressure receiving device, a hydraulic pressure conversion device, a hydraulic pressure ratio adjustment device, and a brake pedal pressure angle adjustment device;

[0005] The brake pedal pressure angle adjustment device includes a guide rail, a first base and a second base;

[0006] The first base and the second base are both slidably mounted on the guide rail;

[0007] The external pressure receiving device is rotatably mounted on the first base;

[0008] The hydraulic conversion device is rotatably mounted on the second base;

[0009] The external pressure receiving device is connected to the hydraulic pressure conversion device through the hydraulic pressure proportional adjustment device.

[0010] Optionally, the hydraulic proportional adjustment device includes a balance bar, a sleeve and a U-shaped fork;

[0011] The sleeve is sleeved on the middle position of the balance pole, and the sleeve is connected to the balance pole through a fisheye bearing;

[0012] The two U-shaped forks are respectively threadedly connected to the left and right ends of the balance rod.

[0013] Optionally, the external pressure receiving device includes a brake pedal plate and a brake pedal rod;

[0014] The brake pedal plate is fixedly arranged on the brake pedal rod;

[0015] The brake pedal rod is rotatably mounted on the first base;

[0016] The brake pedal rod is provided with a connecting hole;

[0017] The sleeve is installed in the connecting hole, and the sleeve and the connecting hole are interference fit.

[0018] Optionally, the brake pedal rod is rotatably mounted on the first base by a plug bolt.

[0019] Optionally, the hydraulic conversion device includes two brake master cylinders;

[0020] The two brake master cylinders are both rotatably mounted on the second base, and the two brake master cylinders are arranged in parallel and spaced apart;

[0021] The two brake master cylinders are respectively connected to the two adjacent U-shaped forks through threads.

[0022] Optionally, both of the brake master cylinders are rotatably mounted on the second base by plugging bolts.

[0023] Optionally, the guide rail is provided with a guide sliding hole along the length direction;

[0024] A first bolt is threadedly connected to the first base;

[0025] The first bolt passes through the guide sliding hole and is threadedly connected with a first nut;

[0026] A second bolt is threadedly connected to the second base;

[0027] The second bolt passes through the guide sliding hole and is threadedly connected with a second nut.

[0028] Optionally, both the first nut and the second nut are T-nuts.

[0029] Optionally, the T-nut includes a positioning block and a pressing plate;

[0030] The width of the pressing plate is greater than the width of the guide sliding hole, and the width of the positioning block is equal to the width of the guide sliding hole, so that the positioning block can slide back and forth in the guide sliding hole.

[0031] Optionally, the number of the guide rails is two;

[0032] The first base and the second base are both mounted on the two guide rails;

[0033] The first base is slidably connected to the two guide rails respectively;

[0034] The second base is slidably connected to the two guide rails respectively.

[0035] It can be seen from the above technical solution that the embodiment of the present application has the following advantages: the brake pedal assembly with adjustable pressure angle includes an external pressure receiving device, a hydraulic conversion device, a hydraulic proportional adjustment device and a brake pedal pressure angle adjustment device, wherein the external pressure receiving device is connected to the hydraulic conversion device through the hydraulic proportional adjustment device, and the brake pedal pressure angle adjustment device includes a guide rail, a first base and a second base. By sliding the first base and the second base on the guide rail, the external pressure receiving device is rotatably installed on the first base, and the hydraulic conversion device is rotatably installed on the second base, the position of the external pressure receiving device and the hydraulic conversion device can be adjusted steplessly, the brake pedal pressure angle can be freely changed, and the adjustable pedal stroke is expanded, so that it can adapt to the pedal position requirements of drivers of different heights, which is more ergonomic and safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the structure of a brake pedal assembly with adjustable pressure angle in an embodiment of the present application;

[0037] Figure 2 This is a schematic structural diagram of an external pressure receiving device in an embodiment of the present application;

[0038] Figure 3 This is a schematic structural diagram of a hydraulic conversion device in an embodiment of the present application;

[0039] Figure 4 This is a structural diagram of the hydraulic proportional adjustment device in an embodiment of the present application;

[0040] Figure 5 This is a schematic structural diagram of a brake pedal pressure angle adjustment device in an embodiment of the present application;

[0041] Figure 6 This is an exploded view of the brake pedal pressure angle adjustment device in an embodiment of the present application;

[0042] Wherein, the accompanying drawings are marked as follows:

[0043] 100-external pressure receiving device, 101-brake pedal plate, 102-brake pedal rod, 103-connecting hole, 200-hydraulic conversion device, 201-brake master cylinder, 300-hydraulic proportional adjustment device, 301-balance bar, 302-sleeve, 303-U-shaped fork, 400-brake pedal pressure angle adjustment device, 401-first base, 402-second base, 403-guide rail, 404-first nut, 405-second nut, 406-guide slide hole, 407-first bolt, 408-second bolt. DETAILED DESCRIPTION

[0044] In order to help those skilled in the art better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0045] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0046] Unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this application.

[0047] This application provides an embodiment of a brake pedal assembly with adjustable pressure angle. Figure 1 、 Figure 5 and Figure 6 .

[0048] The brake pedal assembly with adjustable pressure angle in this embodiment includes: an external pressure receiving device 100, a hydraulic conversion device 200, a hydraulic proportional adjustment device 300 and a brake pedal pressure angle adjustment device 400, the brake pedal pressure angle adjustment device 400 includes a guide rail 403, a first base 401 and a second base 402, the first base 401 and the second base 402 are both slidably mounted on the guide rail 403, the external pressure receiving device 100 is rotatably mounted on the first base 401, the hydraulic conversion device 200 is rotatably mounted on the second base 402, and the external pressure receiving device 100 is connected to the hydraulic conversion device 200 through the hydraulic proportional adjustment device 300.

[0049] It should be noted that: this brake pedal assembly can steplessly adjust the position of the external pressure receiving device 100 and the hydraulic conversion device 200, freely change the brake pedal pressure angle, and expand the adjustable stroke of the pedal, so as to adapt to the pedal position requirements of drivers of different heights, which is more ergonomic and safer to use.

[0050] The above is the first embodiment of a brake pedal assembly with adjustable pressure angle provided by the embodiment of the present application. The following is the second embodiment of a brake pedal assembly with adjustable pressure angle provided by the embodiment of the present application. For details, please refer to Figures 1 to 6 .

[0051] The pressure-angle-adjustable brake pedal assembly in this embodiment includes an external pressure receiving device 100, a hydraulic pressure conversion device 200, a hydraulic pressure ratio adjustment device 300, and a brake pedal pressure angle adjustment device 400. The brake pedal pressure angle adjustment device 400 includes a guide rail 403, a first base 401, and a second base 402. The first base 401 and the second base 402 are both slidably mounted on the guide rail 403. The external pressure receiving device 100 is rotatably mounted on the first base 401, and the hydraulic pressure conversion device 200 is rotatably mounted on the second base 402. The external pressure receiving device 100 is connected to the hydraulic pressure conversion device 200 via the hydraulic pressure ratio adjustment device 300. Preferably, the first base 401, the second base 402, and the guide rail 403 are all made of aluminum alloy, making the entire brake pedal assembly more lightweight. Specifically, the first base 401, the second base 402, and the guide rail 403 can all be manufactured by laser cutting off-the-shelf sheet metal, which significantly reduces cost compared to milling while significantly improving precision and manufacturability.

[0052] The hydraulic proportional adjustment device 300 includes a balance bar 301, a sleeve 302, and a U-shaped fork 303. The sleeve 302 is mounted in the middle of the balance bar 301 and connected to the balance bar 301 via a fisheye bearing. Two U-shaped forks 303 are threaded onto the left and right ends of the balance bar 301 (the balance bar 301 has external threads that mate with the internal threads of the U-shaped forks 303). The hydraulic proportional adjustment device 300 primarily adjusts the hydraulic pressure distribution by adjusting the relative position of the two U-shaped forks 303 on the balance bar 301.

[0053] The external pressure receiving device 100 includes a brake pedal plate 101 and a brake pedal rod 102. The brake pedal plate 101 is fixedly arranged on the brake pedal rod 102. The brake pedal rod 102 is rotatably mounted on the first base 401. A connecting hole 103 is provided on the brake pedal rod 102. The sleeve 302 is installed in the connecting hole 103, and the sleeve 302 is interference fit with the connecting hole 103.

[0054] The brake pedal rod 102 is rotatably mounted on the first base 401 via a driving bolt, and the smooth rod portion of the driving bolt serves as the central axis of rotation.

[0055] The hydraulic pressure conversion device 200 comprises two master cylinders 201, which convert the pressure applied to the external pressure receiving device 100 into hydraulic pressure. Both master cylinders 201 are rotatably mounted on a second base 402, spaced apart and arranged in parallel. Each master cylinder 201 is threadedly connected to two adjacent U-shaped forks 303. Rotating the balancing rod 301 changes the lever relationship between the two master cylinders 201 (changing the length of the moment arm acting on the master cylinder push rod), thereby varying the force applied to each master cylinder 201 and, consequently, the hydraulic pressure distribution in the front and rear oil circuits.

[0056] It should be noted that the two brake master cylinders 201 are identical in structure, with one connected in series to the front wheel oil circuit and the other to the rear wheel oil circuit, a Type II piping arrangement. If one brake line fails unexpectedly, the other can still generate braking force to ensure braking effectiveness.

[0057] The two brake master cylinders 201 are both rotatably mounted on the second base 402 via driving bolts, and the smooth rod portion of the driving bolts serves as the central axis of rotation.

[0058] Guide rail 403 has a guide hole 406 formed along its length. A first bolt 407 is threadedly connected to first base 401. First bolt 407 passes through guide hole 406 and is then threadedly connected to first nut 404. Second base 402 is threadedly connected to second bolt 408. Second bolt 408 passes through guide hole 406 and is then threadedly connected to second nut 405. During use, loosening first bolt 407 allows first base 401 to freely move forward and backward on guide rail 403, while loosening second bolt 408 allows second base 402 to freely move forward and backward on guide rail 403, achieving stepless adjustment.

[0059] Preferably, the first nut 404 and the second nut 405 are both T-nuts. The T-nut includes a positioning block and a pressure plate. The width of the pressure plate is greater than the width of the guide slide hole 406, and the width of the positioning block is equal to the width of the guide slide hole 406, so that the positioning block can slide back and forth in the guide slide hole 406.

[0060] It should be noted that: by adjusting the T-nut to change the relative position of the first base 401 and the second base 402, the pedal pressure angle can be changed. Specifically, the narrow end of the T-nut (i.e., the positioning block) can slide back and forth in the guide slide hole 406. When it moves to the desired position, the corresponding first bolt 407 or second bolt 408 is tightened. At this time, the wide end of the T-nut (i.e., the pressure plate) will be pressed against the lower end surface of the guide rail 403 to generate friction to achieve a fixing effect.

[0061] It can be understood that the acute angle formed by the brake pedal rod 102 and the brake master cylinder 201 is the pressure angle. When the pressure angle is large, a small external pedal force can be applied to obtain a large hydraulic pressure, and the brake pedal feels softer when fed back to the driver; when the pressure angle is small, a larger external pedal force is required to obtain a large hydraulic pressure, and the brake pedal feels harder when fed back to the driver; on the other hand, by adjusting the relative position of the first base 401 and the second base 402, the straight position of the brake pedal rod 102 can be made non-vertical and slightly tilted toward the brake master cylinder 201, thereby preventing the driver from accidentally stepping on the brake; at the same time, by changing the front and rear positions of the second base 402 and the first base 401, the same brake pedal assembly can be adapted to drivers with different heights and operating habits.

[0062] Specifically, there are two guide rails 403 , and the first base 401 and the second base 402 are both mounted on the two guide rails 403 . The first base 401 is slidably connected to the two guide rails 403 , and the second base 402 is slidably connected to the two guide rails 403 .

[0063] During specific implementation, by loosening the first bolt 407 and the second bolt 408, the positions of the T-nuts of the first base 401 and the second base 402 can be changed respectively, thereby achieving stepless adjustment of the positions of the first base 401 and the second base 402, thereby changing the brake pedal pressure angle, and then adjusting the external pressure required to generate the same hydraulic pressure, so that the force feedback of the brake pedal is more adjustable and applicable to a wider range of people. In addition, by adjusting the initial angle of the brake pedal, the geometry is made more comfortable and the driver can be prevented from accidentally touching the brake pedal, thus being safer (in the traditional brake pedal assembly design, since the brake pedal rod base and the brake master cylinder base are integrated into the same base, the initial angle of the brake pedal cannot be adjusted and can only be kept vertical, which can easily cause the driver to accidentally touch the brake pedal, posing a safety hazard).

[0064] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A brake pedal assembly with adjustable pressure angle, characterized in that: include: External pressure receiving device, hydraulic pressure conversion device, hydraulic pressure ratio adjustment device and brake pedal pressure angle adjustment device; The brake pedal pressure angle adjustment device includes a guide rail, a first base and a second base; The first base and the second base are both slidably mounted on the guide rail; The external pressure receiving device is rotatably mounted on the first base; The hydraulic conversion device is rotatably mounted on the second base; The external pressure receiving device is connected to the hydraulic pressure conversion device through the hydraulic pressure proportional adjustment device.

2. The brake pedal assembly with adjustable pressure angle according to claim 1, characterized in that: The hydraulic proportional adjustment device includes a balance rod, a sleeve and a U-shaped fork; The sleeve is sleeved on the middle position of the balance pole, and the sleeve is connected to the balance pole through a fisheye bearing; The two U-shaped forks are respectively threadedly connected to the left and right ends of the balance rod.

3. The brake pedal assembly with adjustable pressure angle according to claim 2, characterized in that: The external pressure receiving device includes a brake pedal plate and a brake pedal rod; The brake pedal plate is fixedly arranged on the brake pedal rod; The brake pedal rod is rotatably mounted on the first base; The brake pedal rod is provided with a connecting hole; The sleeve is installed in the connecting hole, and the sleeve and the connecting hole are interference fit.

4. The brake pedal assembly with adjustable pressure angle according to claim 3, characterized in that: The brake pedal rod is rotatably mounted on the first base by a plug bolt.

5. The brake pedal assembly with adjustable pressure angle according to claim 2, characterized in that: The hydraulic conversion device includes two brake master cylinders; The two brake master cylinders are both rotatably mounted on the second base, and the two brake master cylinders are arranged in parallel and spaced apart; The two brake master cylinders are respectively connected to the two adjacent U-shaped forks through threads.

6. The brake pedal assembly with adjustable pressure angle according to claim 5, characterized in that: The two brake master cylinders are both rotatably mounted on the second base via plug bolts.

7. The brake pedal assembly with adjustable pressure angle according to claim 1, characterized in that: The guide rail is provided with a guide sliding hole along the length direction; A first bolt is threadedly connected to the first base; The first bolt passes through the guide sliding hole and is threadedly connected with a first nut; A second bolt is threadedly connected to the second base; The second bolt passes through the guide sliding hole and is threadedly connected with a second nut.

8. The brake pedal assembly with adjustable pressure angle according to claim 7, characterized in that: The first nut and the second nut are both T-nuts.

9. The brake pedal assembly with adjustable pressure angle according to claim 8, characterized in that: The T-nut includes a positioning block and a pressing plate; The width of the pressing plate is greater than the width of the guide sliding hole, and the width of the positioning block is equal to the width of the guide sliding hole, so that the positioning block can slide back and forth in the guide sliding hole.

10. The brake pedal assembly with adjustable pressure angle according to claim 1, characterized in that: The number of the guide rails is two; The first base and the second base are both mounted on the two guide rails; The first base is slidably connected to the two guide rails respectively; The second base is slidably connected to the two guide rails respectively.

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