Novel magnetic sheet mounting structure for pedal foot feeling simulation unit

Abstract

The utility model provides a novel magnetic sheet mounting structure for a pedal foot feeling simulation unit. The novel magnetic sheet mounting structure comprises a shell, a driving rod, a piston rod and a magnetic sheet mounting bracket, one end of the piston rod is fixed to the inner end of the driving rod, the piston rod is movably arranged in the braking channel, the outer end of the piston rod penetrates out of the braking channel, and the outer end of the piston rod is sleeved with a spring structure; one end of the magnetic sheet mounting bracket is fixed on the piston rod, a magnetic sheet is fixed in the mounting part, the mounting part is slidably matched with the mounting slideway, and the mounting slideway is used for circumferentially limiting the mounting part. The magnetic sheet is arranged at the side position of the piston rod through the magnetic sheet mounting bracket, and the magnetic sheet mounting bracket is provided with a special slide way for vertical movement, so that the magnetic sheet mounting bracket can only move vertically without radial or rotary movement, the displacement of the magnetic sheet can be always in a normal state, and the service life of the magnetic sheet is prolonged. Therefore, the error problem caused by accidental rotation movement is completely avoided.

Description

Technical Field

[0001] The utility model relates to automobile braking technology, in particular to a novel magnetic sheet installation method that can be used for a pedal foot feeling simulation unit. Background Art

[0002] With the development trend of "electrification and intelligence" of automobiles, traditional mechanical brakes have been gradually replaced by wire-controlled brakes. Whether in the field of passenger cars or commercial vehicles, new products such as One box and EMB have gradually emerged in the market. No matter which type of wire control development direction, it needs to be developed in combination with the energy recovery function of the most popular new energy vehicles. It is bound to involve a decoupled pedal feel simulation unit, and displacement sensors are widely used in pedal feel simulation units.

[0003] At present, the magnetic pieces used in displacement sensors of brake-by-wire simulator products are mostly annular in structure. A small number of them use square structures without limit positions. During the movement of the magnetic pieces, due to the magnetic declination of the magnetic pieces themselves, and the spring force or the long-term movement of the product, the magnetic lines of force deflect from the initial calibrated direction, causing the zero point to "drift" after returning to the original position. That is, the displacement of the magnetic pieces is unstable and needs to be solved.

[0004] Specifically, the problem of zero-point drift caused by the rotation of the magnetic disc or other unexpected movements in existing products is solved. In the vast majority of pedal simulator designs, the magnetic disc is directly and rigidly connected to the piston rod to ensure that the magnetic disc can move in time when the piston rod moves. The displacement sensors used are almost all Hall-type, and the combined spring connected to the piston rod contains a wire spring. When the piston rod presses down on the spring, the wire spring generates compression force and radial torque at the same time. If the radial movement of the piston rod or the magnetic disc is not restricted, when the magnetic disc rotates, the quality of the magnetic disc cannot guarantee the uniform distribution of the radial 360° magnetic lines of force. After the zero-point calibration is completed, after several steps, the magnetic disc rotates, the magnetic lines of force change, and the value sensed by the chip changes. After the pedal returns to its original position, an error occurs in the zero point. Utility Model Content

[0005] In order to solve the problems existing in the above-mentioned technology, the utility model provides a new magnetic sheet installation method that can be used for a pedal feel simulation unit.

[0006] The utility model provides a novel magnetic sheet installation structure for a pedal feel simulation unit, which comprises a housing, a driving rod, a piston rod and a magnetic sheet installation bracket;

[0007] The housing has a brake channel and a mounting slideway;

[0008] A driving rod is movably arranged in the brake channel, and an outer end of the driving rod is used to connect to a brake pedal of a vehicle;

[0009] One end of the piston rod is fixed to the inner end of the driving rod, the piston rod is movably arranged in the braking channel, and the outer end of the piston rod passes through the outside of the braking channel, and a spring structure is sleeved on the outer end;

[0010] One end of the magnetic piece mounting bracket is fixed on the piston rod, and the magnetic piece mounting bracket has a mounting portion, in which a magnetic piece is fixed, and the mounting portion can be slidably matched with the mounting slide, and the mounting slide performs circumferential limitation on the mounting portion.

[0011] Preferably, it also includes a controller, which has a sensing chip. The controller is arranged on a mounting plate outside the mounting slide, and the sensing chip is used to sense the movement of the magnetic sheet.

[0012] Preferably, the sensing chip is a Hall-type sensing chip.

[0013] Preferably, the mounting portion has a mounting groove, glue is applied to the mounting groove, and then the magnetic sheet is pressed into the groove in a specified direction until the glue is firmly fixed.

[0014] Preferably, the magnetic sheet mounting bracket is connected to the piston rod via an elastic pin, and a press is used to press the elastic pin into a mounting hole in which the magnetic sheet mounting bracket and the piston rod are aligned.

[0015] Preferably, the inner end of the driving rod cooperates with the engaging groove at the upper end of the piston rod through an engaging protrusion.

[0016] Preferably, the piston rod has a snap-fit ​​groove, and a part of the spring structure is located in the snap-fit ​​groove.

[0017] The beneficial effect of this product is that the magnetic plate is set on the side of the piston rod through the setting of the magnetic plate mounting bracket, and the vertical movement of the magnetic plate mounting bracket has a special slide, so that the magnetic plate mounting bracket can only move vertically without radial or rotational movement. In this way, the displacement of the magnetic plate can always be in a normal state, thereby completely avoiding the error problem caused by unexpected rotational movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a cross-sectional view of a novel magnetic sheet installation structure for a pedal feel simulation unit of the utility model.

[0019] Description of reference numerals:

[0020] 1-housing; 11-brake channel; 12-mounting slideway;

[0021] 2-driving rod; 21-engaging protrusion;

[0022] 3-piston rod; 31-engaging groove; 32-outer end; 33-engaging groove; 34-spring structure; 35-elastic pin;

[0023] 4-magnetic sheet mounting bracket; 41-mounting portion; 411-mounting slot; 412-magnetic sheet;

[0024] 5- Controller. DETAILED DESCRIPTION

[0025] Embodiment 1:

[0026] This embodiment provides a novel magnetic sheet installation structure for a pedal feel simulation unit, which includes a housing 1, a drive rod 2, a piston rod 3 and a magnetic sheet installation bracket 4;

[0027] The housing 1 has a brake channel 11 and a mounting slideway 12;

[0028] The driving rod 2 is movably arranged in the brake channel 11, and the outer end of the driving rod 2 is used to connect the brake pedal of the car;

[0029] One end of the piston rod 3 is fixed to the inner end of the driving rod 2, the piston rod 3 is movably arranged in the brake channel 11, and the outer end 32 of the piston rod 3 passes through the outside of the brake channel 11, and a spring structure 34 is sleeved on the outer end 32;

[0030] One end of the magnetic piece mounting bracket 4 is fixed on the piston rod 3 , and the magnetic piece mounting bracket 4 has a mounting portion 41 , in which a magnetic piece 412 is fixed, and the mounting portion 41 can be slidably matched with the mounting slide 12 , and the mounting slide 12 performs circumferential limitation on the mounting portion 41 .

[0031] The magnetic piece 412 is set on the side of the piston rod 3 by the magnetic piece mounting bracket 4, and the vertical movement of the magnetic piece mounting bracket 4 has a special slide (mounting slide 12), so that the magnetic piece mounting bracket 4 can only move vertically without radial or rotational circumferential movement. In this way, the displacement of the magnetic piece can always be in a normal state, thereby completely avoiding the error problem caused by unexpected rotational movement.

[0032] Embodiment 2:

[0033] On the basis of Embodiment 1, in this embodiment, preferably, a controller 5 is further included, the controller 5 having a sensing chip, the controller 5 being arranged on the mounting plate outside the mounting slide 12, the sensing chip being used to sense the movement of the magnetic sheet 412. The induction formed by the induction chip for the movement of the magnetic sheet belongs to the prior art, and the specific principle will not be described in detail here.

[0034] Preferably, the sensing chip is a Hall-type sensing chip.

[0035] Preferably, the mounting portion 41 has a mounting groove 411 , glue is applied to the mounting groove 411 , and then the magnetic sheet 412 is pressed into the groove in a specified direction until the glue is firmly fixed.

[0036] Preferably, the magnetic sheet mounting bracket 4 is connected to the piston rod 3 via an elastic pin 35 , and a press is used to press the elastic pin 35 into a mounting hole where the magnetic sheet mounting bracket 4 and the piston rod 3 are aligned.

[0037] Preferably, the inner end of the driving rod 2 cooperates with the engaging groove 31 at the upper end of the piston rod 3 through the engaging protrusion 21 .

[0038] Preferably, the piston rod 3 has a snap-fit ​​groove 33 , and a portion of the spring structure 34 is located in the snap-fit ​​groove 33 .

[0039] In actual applications, the drive rod is connected to the pedal of the vehicle. When the user brakes the vehicle, the pedal drives the drive rod and the piston rod downward, and the magnetic sheet is displaced in the installation slide. The Hall sensor chip senses the change in the normal magnetic force through the Hall principle, and then outputs an electrical signal corresponding to the displacement.

[0040] When the piston rod moves downward, the spring below is compressed, generating elastic force that is fed back to the piston rod. The driving rod is then connected to the external vehicle pedal, thereby generating a pedal feel for the driver.

[0041] When the piston rod moves downward, the magnetic sheet moves downward, and the Hall-type sensing chip senses the movement of the magnetic sheet. There is no restriction on the type and quantity of the chip. The chip described here can be any component that can sense the movement of the magnetic sheet and output a corresponding signal.

[0042] When the piston rod moves downward and the spring simulates the feeling of the foot, there is no restriction on the type, quantity, installation method, etc. of the spring. The spring described here can be any form of elastic member and combination of elastic members.

Claims

1. A novel magnetic sheet installation structure for a pedal feel simulation unit, characterized in that: include: A housing (1) having a braking channel (11) and a mounting slideway (12); A driving rod (2) is movably arranged in the brake channel (11), and the outer end of the driving rod (2) is used to connect to the brake pedal of the vehicle; A piston rod (3), one end of which is fixed to the inner end of the driving rod (2); the piston rod (3) is movably arranged in the braking channel (11); and an outer end (32) of the piston rod (3) passes out of the braking channel (11); a spring structure (34) is sleeved on the outer end (32); A magnetic sheet mounting bracket (4) has one end fixed on the piston rod (3), the magnetic sheet mounting bracket (4) having a mounting portion (41), a magnetic sheet (412) being fixed inside the mounting portion (41), the mounting portion (41) being slidably matched with the mounting slideway (12), and the mounting slideway (12) performing circumferential limiting on the mounting portion (41).

2. The novel magnetic sheet installation structure for a pedal feel simulation unit according to claim 1, characterized in that: It also includes a controller (5), the controller (5) having a sensing chip, the controller (5) being arranged on a mounting plate outside the mounting slide (12), the sensing chip being used to sense the movement of the magnetic sheet (412).

3. The novel magnetic sheet installation structure for a pedal feel simulation unit according to claim 2, characterized in that: The sensing chip is a Hall-type sensing chip.

4. The novel magnetic sheet installation structure for a pedal feel simulation unit according to claim 1, characterized in that: The mounting portion (41) has a mounting groove (411), glue is applied to the mounting groove (411), and then the magnetic sheet (412) is pressed into the groove in a specified direction until the glue is firmly fixed.

5. The novel magnetic sheet installation structure for a pedal feel simulation unit according to claim 1, characterized in that: The magnetic sheet mounting bracket (4) is connected to the piston rod (3) via an elastic pin (35), and a press is used to press the elastic pin (35) into a mounting hole aligned with the magnetic sheet mounting bracket (4) and the piston rod (3).

6. The novel magnetic sheet installation structure for a pedal feel simulation unit according to claim 1, characterized in that: The inner end of the driving rod (2) cooperates with the engaging groove (31) at the upper end of the piston rod (3) via the engaging protrusion (21).

7. The novel magnetic sheet installation structure for a pedal feel simulation unit according to claim 1, characterized in that: The piston rod (3) has a snap-fit ​​groove (33), and a portion of the spring structure (34) is located in the snap-fit ​​groove (33).

Images