Brake pedal simulator

Abstract

The utility model relates to a brake pedal simulator which comprises a pedal connector, a pedal connecting rod, an upper check ring, a lower check ring, a first spring, a second spring, an ejector rod connector, an ejector rod and a mounting seat. The pedal connecting rod is sleeved with the upper check ring and the lower check ring, the first spring is installed between the upper check ring and the lower check ring, and the lower end of the pedal connecting rod is movably connected with the ejector rod connector. A circle of limiting boss integrally formed with the ejector rod is arranged in the middle of the ejector rod, and the upper end of the ejector rod penetrates through the shaft hole of the installation base and then is in threaded connection with the ejector rod connector. The second spring is mounted between the lower check ring and the mounting seat; force of the brake pedal is transmitted to the pedal connecting rod through the pedal connector connected with the brake pedal, then transmitted to the ejector rod through the ejector rod connector and finally acted on the brake master cylinder through the lower end of the ejector rod. The pedal connecting rod and the ejector rod can be conveniently and rapidly connected through the ejector rod connector, and it can be ensured that the ejector rod is safer and more reliable when returning.

Description

Technical Field

[0001] The utility model relates to an automobile braking system, in particular to a brake pedal simulator. Background Art

[0002] With the popularity of new energy vehicles, energy recovery and carbon emission reduction are being realized, and the demand for decoupled wire-controlled brake systems is increasing. Therefore, the requirements for pedal simulators are also increasing. At present, the working principles of brake boosters are mainly divided into two categories, one is to simulate the pedal feel by springs, and the other is a hydraulic pedal feel simulator. Among them, the hydraulic pedal feel simulator has a complex structure and high cost, while the spring simulated pedal feel has a simple structure and low cost, but the spring stiffness is very linear, resulting in poor subjective driver experience, and there are disadvantages such as inconvenient installation and high noise. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a brake pedal simulator which is easy to install and has a stable structure.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a brake pedal simulator, including a pedal connecting head, a pedal connecting rod, an upper retaining ring, a lower retaining ring, a first spring, a second spring, a push rod connecting head, a push rod and a mounting seat; the upper retaining ring and the lower retaining ring are both sleeved on the pedal connecting rod, the first spring is installed between the upper retaining ring and the lower retaining ring, and the lower end of the pedal connecting rod is movably connected with the push rod connecting head; the middle part of the push rod is provided with a circle of limiting bosses integrally formed with the push rod, and the upper end of the push rod is threadedly connected with the push rod connecting head after passing through the axial hole of the mounting seat; the second spring is installed between the lower retaining ring and the mounting seat; the force of the brake pedal is transmitted to the pedal connecting rod through the pedal connecting head connected thereto, and then transmitted to the push rod through the push rod connecting head, and finally acts on the brake master cylinder from the lower end of the push rod.

[0005] Wherein, the upper retaining ring is fixed on the pedal connecting rod, and the lower retaining ring can move up and down along the pedal connecting rod and the push rod.

[0006] Furthermore, a push rod buffer pad is provided between the limiting boss of the push rod and the mounting seat, and the push rod buffer pad is used to provide buffering when the push rod moves axially back to its original position.

[0007] Furthermore, a push rod bushing is provided between the push rod and the axial hole of the mounting seat.

[0008] Furthermore, the mounting seat is provided with an upward annular groove and a downward cavity, and the mounting seat soft rubber is inserted into the annular groove, and the upper end of the mounting seat soft rubber protrudes from the annular groove.

[0009] Furthermore, a lower retaining ring soft rubber is provided above the lower retaining ring, and when the pedal connecting rod drives the upper retaining ring downward to contact the lower retaining ring, the lower retaining ring soft rubber can play a buffering role.

[0010] The beneficial effects of the utility model are: 1) by setting the first spring and the second spring, the pedal feel requirement of variable stiffness can be met; 2) because the lower end of the pedal connecting rod is movably connected to the push rod connecting head, and the upper end of the push rod is threadedly connected to the push rod connecting head, the pedal connecting rod and the push rod can be connected very conveniently and quickly through the push rod connecting head; 3) the limiting boss and the push rod are integrally formed, which can ensure that the push rod is safer and more reliable when returning to its position; 4) in a further technical solution, by setting a push rod buffer pad, a mounting seat soft rubber, and a lower retaining ring soft rubber, buffering can be performed for different contact parts, thereby playing a role in shock absorption and noise reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the three-dimensional structure of the brake pedal simulator in the embodiment of the utility model;

[0012] Figure 2 It is a schematic cross-sectional structure diagram of a brake pedal simulator in an embodiment of the utility model;

[0013] Figure 3 This is a schematic diagram of the upper structure of the mounting base in the embodiment of the utility model;

[0014] Figure 4 This is a schematic diagram of the lower structure of the mounting base in the embodiment of the utility model;

[0015] The accompanying drawings are marked as follows:

[0016] 11. Pedal connector; 12. Pedal connecting rod; 20. Upper retaining ring; 31. Lower retaining ring; 32. Lower retaining ring soft rubber; 40. First spring; 50. Second spring; 60. Push rod connector; 70. Push rod; 80. Mounting seat soft rubber; 90. Push rod buffer pad; 100. Push rod bushing; 110. Mounting seat. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not limited to the utility model.

[0018] like Figures 1 to 4As shown, the preferred embodiment of the utility model is: a brake pedal simulator, including a U-shaped pedal connector 11, a pedal connecting rod 12, an upper retaining ring 20, a lower retaining ring 31, a first spring 40, a second spring 50, a push rod 70 connector 60, a push rod 70 and a mounting seat 110; the upper retaining ring 20 and the lower retaining ring 31 are both sleeved on the pedal connecting rod 12, the first spring 40 is installed between the upper retaining ring 20 and the lower retaining ring 31, the lower end of the pedal connecting rod 12 is movably connected to the push rod 70 connector 60 to form a ball cage universal joint; the middle part of the push rod 70 is provided with a circle of limiting bosses integrally formed with the push rod 70, and the upper end of the push rod 70 passes through the mounting seat 11 0 is threadedly connected with the connecting head 60 of the push rod 70; the second spring 50 is installed between the lower retaining ring 31 and the mounting seat 110; the upper retaining ring 20 is fixed on the pedal connecting rod 12, and the lower retaining ring 31 can move up and down along the pedal connecting rod 12 and the push rod 70. A lower retaining ring soft rubber 32 is provided above the lower retaining ring 31. When the pedal connecting rod 12 drives the upper retaining ring 20 downward to contact the lower retaining ring 31, the lower retaining ring soft rubber 32 can play a buffering role; the force of the brake pedal is transmitted to the pedal connecting rod 12 through the pedal connecting head 11 connected thereto, and then transmitted to the push rod 70 through the connecting head 60 of the push rod 70, and finally acts on the brake master cylinder from the lower end of the push rod 70.

[0019] like Figure 2 As shown, a push rod 70 buffer pad is provided between the limiting boss of the push rod 70 and the mounting seat 110 to provide buffering for the push rod 70 when it moves axially back to its original position; a push rod 70 bushing is provided between the push rod 70 and the axial hole of the mounting seat 110; the mounting seat 110 is provided with an upward annular groove and a downward cavity, and a mounting seat soft rubber 80 is inserted in the annular groove, and the upper end of the mounting seat soft rubber 80 protrudes from the annular groove to provide buffering when the lower retaining ring 31 is pressed downward.

[0020] The beneficial effects of this embodiment are: 1) by setting the first spring 40 and the second spring 50, the pedal feel requirement of variable stiffness can be met; 2) since the lower end of the pedal connecting rod 12 is movably connected to the push rod 70 connecting head 60, and the upper end of the push rod 70 is threadedly connected to the push rod 70 connecting head 60, the pedal connecting rod 12 and the push rod 70 can be connected very conveniently and quickly through the push rod 70 connecting head 60; 3) the limiting boss and the push rod 70 are integrally formed, which can ensure that the push rod 70 is safer and more reliable when returning to its position; 4) in a further technical solution, by setting the push rod 70 buffer pad, the mounting seat soft rubber 80, and the lower retaining ring soft rubber 32, it is possible to provide buffering for different contact parts, thereby achieving the effect of shock absorption and noise reduction.

[0021] The above embodiments are preferred implementation schemes of the present utility model. In addition, the present utility model can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of the present utility model patent.

[0022] In order to make it easier for ordinary technicians in the field to understand the improvements of the present invention over the prior art, some drawings and descriptions of the present invention have been simplified, and for the sake of clarity, some other elements are omitted in the application document. Ordinary technicians in the field should realize that these omitted elements may also constitute the content of the present invention.

Claims

1. A brake pedal simulator, characterized in that: The pedal connecting rod (12) comprises a pedal connecting head (11), a pedal connecting rod (12), an upper retaining ring (20), a lower retaining ring (31), a first spring (40), a second spring (50), a push rod connecting head (60), a push rod (70) and a mounting seat (110); the upper retaining ring (20) and the lower retaining ring (31) are both sleeved on the pedal connecting rod (12), the first spring (40) is installed between the upper retaining ring (20) and the lower retaining ring (31), and the lower end of the pedal connecting rod (12) is movably connected to the push rod connecting head (60) The push rod (70) is connected with the support rod by a circle of limiting bosses formed integrally with the push rod in the middle part, and the upper end of the push rod (70) passes through the axial hole of the mounting seat (110) and is threadedly connected to the push rod connector (60); the second spring is installed between the lower retaining ring (31) and the mounting seat (110); the force of the brake pedal is transmitted to the pedal connecting rod (12) through the pedal connector (11) connected thereto, and then transmitted to the push rod (70) through the push rod connector (60), and finally acts on the brake master cylinder through the lower end of the push rod (70).

2. The brake pedal simulator according to claim 1, characterized in that: The upper retaining ring is fixed on the pedal connecting rod (12), and the lower retaining ring (31) can move up and down along the pedal connecting rod (12) and the push rod (70).

3. The brake pedal simulator according to claim 1 or 2, characterized in that: A push rod buffer pad (90) is provided between the boss of the push rod (70) and the mounting seat (110), and the push rod buffer pad (90) is used for buffering when the push rod (70) moves axially back to its original position.

4. The brake pedal simulator according to claim 1 or 2, characterized in that: A push rod bushing (100) is provided between the push rod (70) and the axial hole of the mounting seat (110).

5. The brake pedal simulator according to claim 1 or 2, characterized in that: The mounting seat (110) is provided with an upward annular groove and a downward cavity, and the mounting seat soft glue (80) is inserted into the annular groove, and the upper end of the mounting seat soft glue (80) protrudes from the annular groove.

6. The brake pedal simulator according to claim 1 or 2, characterized in that: A lower retaining ring soft rubber (32) is provided above the lower retaining ring (31). When the pedal connecting rod (12) drives the upper retaining ring (20) downward to contact the lower retaining ring (31), the lower retaining ring soft rubber (32) can play a buffering role.

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