CN110901608A

CN110901608A - Non-decoupling electronic brake booster unit for solving problem of pedal presser foot

Info

Publication number: CN110901608A
Application number: CN201911279692.7A
Authority: CN
Inventors: 李亮; 赵洵; 李小康; 杨志刚; 仝世学
Original assignee: Tianjin Emtronix Huizhi Automobile Technology Co Ltd
Current assignee: Tianjin Emtronix Huizhi Automobile Technology Co Ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-03-24

Abstract

The invention discloses a non-decoupling electronic brake power assisting device for solving the problem of pedal presser foot. According to the invention, the separated ball rod structure is adopted, so that the first ball rod and the second ball rod move relatively, the acting force is controlled by the extension spring, the force of the pedal for extruding the foot of a driver can be effectively controlled in the active pressurization mode, and the operation safety of the driver is ensured; the rubber ball is arranged between the first ball rod and the second ball rod, so that when the extension spring returns, a buffer effect is achieved between the contact surfaces of the first ball rod and the second ball rod, and abnormal sound caused by impact is reduced; the air hole is arranged on the first ball arm for exhausting air, so that the phenomenon of retardation of movement between the first ball arm and the second ball arm can be effectively reduced.

Description

Non-decoupling electronic brake booster unit for solving problem of pedal presser foot

Technical Field

The invention relates to the technical field of automobile power assisting devices, in particular to a non-decoupling electronic brake power assisting device for solving the problem of pedal presser foot.

Background

The electromechanical brake auxiliary power system mainly comprises a plunger, an auxiliary piston and other structures.

When a vehicle is controlled in an active pressurization mode, a pedal can move in a coupling mode along with a brake mechanism, if the foot of a driver or other foreign bodies are just placed below the pedal at the moment, the pedal can extrude the foot of the driver, and the foot of the driver is likely to be fractured due to large extrusion force, so that great potential safety hazards exist. Therefore, the invention provides a non-decoupling electronic brake boosting device for solving the problem of pedal pressure foot to solve the defects.

Disclosure of Invention

The technical problem to be solved by the invention is to overcome the defect of safety risk of reducing the problem of presser foot caused by the movement of the pedal along with the linkage device when the electronic brake power assisting device in the prior art is in an active pressurization mode, and provide a non-decoupling electronic brake power assisting device for solving the problem of pedal presser foot. The non-decoupling electronic brake power assisting device has the characteristics of compact structure, convenience in assembly, capability of effectively solving the problem of presser foot caused by the fact that the pedal moves along with the linkage device, and the like.

In order to achieve the purpose, the invention provides the following technical scheme: a non-decoupling electronic brake booster unit for solving the problem of pedal presser foot comprises a sensor chip shell, a plunger, a ball rod, a screw rod guide rail, a nut, a conical spring, a locknut and a lifting lug which are positioned on the same axis, wherein the sensor chip shell is connected with a sensor chip; one end of the plunger piston close to the sensor chip shell is connected with a cross pressing sheet and a sensor magnet; the sensor chip shell is connected with the lead screw guide rail; the screw rod guide rail is sleeved on the plunger; the nut is sleeved on the lead screw guide rail; one end of the ball rod is connected with the plunger, and the other end of the ball rod is connected with the lifting lug; the conical spring is sleeved at one end, close to the lead screw guide rail, of the ball rod; the locknut is connected with the ball rod and is positioned at one end close to the lifting lug; the ball rod comprises a first ball rod, a second ball rod, a tension spring, a first pin shaft and a second pin shaft; one end of the column close to the first ball rod forms a shaft sleeve rod; one end of the first ball rod is connected with the shaft sleeve rod, and the other end of the first ball rod is sleeved at one end of the second ball rod; one end of the first ball arm, which is close to the second ball arm, is provided with a first positioning hole; a second positioning hole is formed in one end, close to the first ball rod, of the second ball rod; the first pin shaft is arranged in the first positioning hole; the second pin shaft is arranged in the second positioning hole; one end of the extension spring is fixed on the first pin shaft, the other end of the extension spring is fixed on the second pin shaft, and the extension spring is sleeved on the first ball arm and the second ball arm simultaneously; the screw guide rail comprises a screw sleeve and a guide rail; the screw rod sleeve is provided with a connecting hole; the plunger is positioned in the connecting hole; the guide rail is fixed at one end, close to the sensor chip shell, of the screw rod sleeve; one end of the nut is provided with a threaded hole matched with the screw rod sleeve, the other end of the nut is provided with a guide hole, and the guide hole is communicated with the threaded hole; the conical spring comprises a large end and a small end, the large end abuts against the screw rod sleeve, and the small end abuts against a ball rod shaft shoulder formed by the first ball rod; the footboard with the return torsional spring is articulated, just the one end of footboard with the lug is articulated, the other end of footboard is used for the people foot to trample.

Preferably, one end of the first ball rod connected with the plunger is a spherical ball head; a ball sleeve is arranged at one end of the plunger close to the first ball rod; the ball head is arranged in the ball sleeve.

Preferably, one end of the first ball arm, which is close to the second ball arm, is provided with a sliding hole; the bottom of the sliding hole is V-shaped; the sliding hole is sleeved on the second ball rod, and the second ball rod is not contacted with the bottom of the sliding hole; and a rubber ball is clamped between the hole bottom of the sliding hole and the second ball rod.

Preferably, the diameter of the rubber ball is smaller than that of the sliding hole, and the rubber ball is simultaneously in contact with the bottom of the sliding hole and the second shaft.

Preferably, the first ball arm is provided with an air hole; the air hole is communicated with the sliding hole; the diameter of the rubber ball is larger than that of the air hole.

Preferably, the nut is provided with a key, and the key is positioned at one end close to the threaded hole on the nut and is used for being connected with the transmission mechanism.

Compared with the prior art, the invention has the beneficial effects that: the separated ball bar structure is adopted, so that the first ball bar and the second ball bar move relatively, the pedal force is converted into the spring force through the buffer acting force of the extension spring, the maximum value of the pedal force cannot cause damage to a driver, and the operation safety of the driver is ensured; the rubber ball is arranged between the first ball rod and the second ball rod, so that when the extension spring returns, a good buffer effect is achieved between the contact surfaces of the first ball rod and the second ball rod, and abnormal sound caused by impact is reduced; the air hole is arranged on the first ball arm for exhausting air, so that the phenomenon of retardation of movement between the first ball arm and the second ball arm can be effectively reduced.

Drawings

FIG. 1 is an exploded view of a non-decoupled electronic brake assist device of the present invention that addresses the problem of pedal foot;

FIG. 2 is an assembly of a non-decoupled electronic brake assist device of the present invention to address the problem of pedal pressure foot;

FIG. 3 is a detail view of an air hole of a non-decoupling electric brake booster of the present invention to solve the problem of pedal pressure foot;

FIG. 4 is a schematic diagram of the operation of a rubber ball of a non-decoupled electric brake booster of the present invention to address the problem of pedal pressure foot;

FIG. 5 is a non-operating state diagram of a non-decoupled electric brake assist apparatus for solving the problem of pedal pressure foot of the present invention;

FIG. 6 is a state diagram of a non-decoupled electric brake booster according to the present invention for solving the problem of pedal pressure foot when a foreign object is present on the pedal;

fig. 7 is a state diagram of the active pressurization condition of the non-decoupling electric brake booster device for solving the problem of pedal pressure foot.

Reference numbers in the figures: 1. a sensor chip housing; 11. a sensor chip; 2. a plunger; 21. a shaft sleeve rod; 211. a ball sleeve; 22. cross tabletting; 23. a sensor magnet; 3. a shaft; 31. a first cue; 311. a slide hole; 313. a first positioning hole; 314. a shaft shoulder of the ball arm; 315. air holes; 316. a ball head; 32. a second cue; 323. a second positioning hole; 33. an extension spring; 34. a first pin shaft; 35. a second pin shaft; 36. a rubber ball; 4. a lead screw guide rail; 41. a guide rail; 42. a screw rod sleeve; 5. a nut; 51. a key; 6. a conical spring; 61. a large end; 62. a small end; 7. a locknut; 8. lifting lugs; 91. a pedal; 92. a return torsion spring; 10. a human foot.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides a technical solution: a non-decoupling electronic brake booster unit for solving the problem of pedal presser foot comprises a sensor chip shell 1, a plunger 2, a ball rod 3, a screw rod guide rail 4, a nut 5, a conical spring 6, a locknut 7 and a lifting lug 8 which are positioned on the same axis, wherein the sensor chip shell 1 is connected with a sensor chip 11; one end of the plunger 2 close to the sensor chip shell 1 is connected with a cross-shaped pressing sheet 22 and a sensor magnet 23; the sensor chip shell 1 is connected with the screw rod guide rail 4; the screw rod guide rail 4 is sleeved on the plunger 2; the nut 5 is sleeved on the screw rod guide rail 4; a key 51 is arranged on the nut 5, the key 51 is positioned at one end close to the threaded hole on the nut 5, one end of the ball rod 3 is connected with the plunger 2, and the other end is connected with the lifting lug 8; the conical spring 6 is sleeved at one end of the ball arm 3 close to the screw rod guide rail 4; the locknut 7 is connected with the ball rod 3 and is positioned at one end close to the lifting lug 8; the cue 3 comprises a first cue 31, a second cue 32, a tension spring 33, a first pin 34 and a second pin 35; one end of the first ball rod 31 connected with the plunger 2 is a spherical ball head 316; a ball sleeve 211 is arranged at one end of the plunger 2 close to the first ball rod 31; the ball head 316 is arranged in the ball sleeve 211, and one end of the first ball rod 31 close to the second ball rod 32 is provided with a sliding hole 311; the bottom of the sliding hole 311 is V-shaped; the sliding hole 311 is sleeved on the second ball rod 32, and the second ball rod 32 is not contacted with the bottom of the sliding hole 311; a rubber ball 36 is clamped between the bottom of the sliding hole 311 and the second ball rod 32, and a sleeve rod 21 is formed at one end of the plunger 2 close to the first ball rod 31; one end of the first ball rod 31 is connected with the shaft sleeve rod 21, and the other end is sleeved at one end of the second ball rod 32; a first positioning hole 313 is formed at one end of the first cue 31 close to the second cue 32; a second positioning hole 323 is formed at one end of the second ball arm 32 close to the first ball arm 31; the first pin 34 is disposed in the first positioning hole 313; the second pin shaft 35 is disposed in the second positioning hole 323; one end of the extension spring 33 is fixed on the first pin 34, the other end is fixed on the second pin 35, and the extension spring 33 is sleeved on the first cue 31 and the second cue 32 at the same time; the screw guide 4 comprises a screw sleeve 42 and a guide rail 41; the screw rod sleeve 42 is provided with a connecting hole; the plunger 2 is positioned in the connecting hole; the guide rail 41 is fixed on one end of the screw rod sleeve 42 close to the sensor chip shell 1; one end of the nut 5 is provided with a threaded hole matched with the screw rod sleeve 42, and the other end is provided with a guide hole which is communicated with the threaded hole; the cone spring 6 comprises a large end 61 and a small end 62, the large end 61 abuts against the screw rod sleeve 42, and the small end 62 abuts against a club shaft shoulder 314 formed by the first club 31; the pedal 91 is hinged with the return torsion spring 92, one end of the pedal 91 is hinged with the lifting lug 8, and the other end of the pedal 91 is used for being stepped by a foot 10;

the diameter of the rubber ball 36 is smaller than that of the sliding hole 311, and the rubber ball 36 is simultaneously in contact with the bottom of the sliding hole 311 and the second club 32;

the first ball arm 31 is provided with an air hole 315; the air hole 315 communicates with the slide hole 311, and the diameter of the rubber ball 36 is larger than that of the air hole 315.

The working principle is as follows:

when the mechanism does not move, the extension spring 33 is in a free length and does not deform, the end face 312 of the first ball rod 31 is in contact with the end face 322 of the second ball rod 32, when the mechanism is in a boosting mode, the lifting lug 8 is forced by the pedal 91 along the X-X direction to push the ball rod 3, the sleeve rod 21 and the cross pressing sheet 22 to move, so that the sensor chip magnet 23 at the position of the sleeve rod 21 and the sensor chip 11 at the position of the sensor chip shell 1 generate relative displacement and transmit signals, the motor drives the mechanism to rotate the nut 5, at the moment, the screw guide rail 4 moves and pushes out along the X-X path towards the A direction to push the sensor chip shell 1 to transmit pressure to the master cylinder to work, in the process, because the first ball rod 31 is in contact with the second ball rod 32 and cannot be shrunk any more, when the second ball rod 32 pushes the first ball rod 31 to move, the spring is not pressed to deform, the three move forward together.

Under the backup braking mode, the lifting lug 8 is pushed by the force of the pedal 91 along the X-X path towards the A direction to push the ball rod 3 and the plunger 2 to move, the plunger 2 pushes the sensor chip shell 1 and other structures to move to send out pressure to the main cylinder, meanwhile, the sensor chip shell 1 drives the lead screw guide rail 4 to move, the lead screw guide rail 4 drives the nut 5 to slide along the A direction relative to the transmission mechanism, the key on the nut 5 only limits the rotation of the nut 5 relative to the transmission mechanism, at the moment, the motor does not work, in the process, the first ball rod 31 and the second ball rod 32 are in contact and cannot be reduced, therefore, when the second ball rod 32 pushes the first ball rod 31 to move, the spring cannot be pressed and deformed, and the first ball rod 31, the second ball rod and.

As shown in fig. 5, the initial pulling force FL0 of the tension spring 33 needs to be larger than the maximum torsional deformation force FNmax generated by the return torsion spring 92 when the pedal 91 is stepped on to the lowest position, and the pedal 91 force FTmax generated by transmitting the maximum torsional deformation force FLmax of the tension spring 33 to the pedal 91 needs to be smaller than the maximum pressing force FYmax that the human foot 10 can bear;

as shown in fig. 6 and 7, in the active pressurization mode, the sensor chip magnet 23 is turned off, the motor only receives a brake signal of the whole vehicle, and the motor rotates when receiving the brake signal of the whole vehicle, so as to drive the nut 5, the lead screw sleeve 42 and the guide rail 41 to perform a pushing motion in the direction a along the axis X-X, and drive the cross press piece 22, the shaft sleeve rod 21 and the first ball rod 31 to move, in the process, because the ball rods are divided into the first ball rod 31 and the second ball rod 32 and the extension spring 33 is additionally arranged in the middle, if there is no obstacle under the pedal 91, the extension spring 33 cannot be stretched and deformed, the second ball rod 32 is still pulled to move, and the second ball rod 32 drives the lifting lug 8 and the pedal; when there is an obstacle under the pedal 91, the pedal 91 is blocked and the extension spring 33 is pulled open, so that the driver can be reminded to move the foot, and the human foot 10 can not be injured even if the driver is unaware of the obstacle, because the pressure of the pedal 91 to the human foot 10 is within the bearable range of the human foot 10 and is buffered. Thus, when the extension spring 33 is pulled away because the human foot 10 is under the pedal 91 during active pressurization, if the human foot 10 is moved away, the extension spring 33 will return quickly because of no obstacle under the pedal 91, and drive the pedal 91 to move, so that the pedal 91 is in a state of no obstacle movement under the pedal 91, and when the human foot 10 is stepped on the pedal 91 again, there will be no idle stroke caused by the extension of the extension spring 33;

although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a solve non-decoupling zero electronic braking booster unit of footboard presser foot problem, includes sensor chip casing (1), plunger (2), club (3), lead screw guide rail (4), nut (5), volute spring (6), locknut (7) and lug (8) that are located same axis, its characterized in that: the sensor chip shell (1) is connected with a sensor chip (11); one end of the plunger (2) close to the sensor chip shell (1) is connected with a cross pressing sheet (22) and a sensor magnet (23); the sensor chip shell (1) is connected with the screw rod guide rail (4); the screw rod guide rail (4) is sleeved on the plunger (2); the nut (5) is sleeved on the lead screw guide rail (4); one end of the ball rod (3) is connected with the plunger (2), and the other end of the ball rod is connected with the lifting lug (8); the conical spring (6) is sleeved at one end, close to the screw rod guide rail (4), of the ball rod (3); the locknut (7) is connected with the ball rod (3) and is positioned at one end close to the lifting lug (8); the ball rod (3) comprises a first ball rod (31), a second ball rod (32), a tension spring (33), a first pin shaft (34) and a second pin shaft (35); one end of the plunger (2) close to the first ball rod (31) forms a shaft sleeve rod (21); one end of the first ball rod (31) is connected with the shaft sleeve rod (21), and the other end of the first ball rod is sleeved at one end of the second ball rod (32); a first positioning hole (313) is formed in one end, close to the second cue (32), of the first cue (31); a second positioning hole (323) is formed in one end, close to the first ball arm (31), of the second ball arm (32); the first pin shaft (34) is arranged in the first positioning hole (313); the second pin shaft (35) is arranged in the second positioning hole (323); one end of the extension spring (33) is fixed on the first pin shaft (34), the other end of the extension spring is fixed on the second pin shaft (35), and the extension spring (33) is sleeved on the first ball arm (31) and the second ball arm (32) at the same time; the screw guide rail (4) comprises a screw sleeve (42) and a guide rail (41); the screw rod sleeve (42) is provided with a connecting hole; the plunger (2) is positioned in the connecting hole; the guide rail (41) is fixed at one end, close to the sensor chip shell (1), of the screw rod sleeve (42); one end of the nut (5) is provided with a threaded hole matched with the screw rod sleeve (42), the other end of the nut is provided with a guide hole, and the guide hole is communicated with the threaded hole; the cone spring (6) comprises a large end (61) and a small end (62), the large end (61) abuts against the screw rod sleeve (42), and the small end (62) abuts against a club shaft shoulder (314) formed by the first club (31); the pedal (91) is hinged to the return torsion spring (92), one end of the pedal (91) is hinged to the lifting lug (8), and the other end of the pedal (91) is used for being stepped by a foot (10).

2. The non-decoupled, electronic brake assist device of claim 1, wherein the brake assist device further comprises: one end of the first ball rod (31) connected with the plunger (2) is a spherical ball head (316); a ball sleeve (211) is arranged at one end of the plunger (2) close to the first ball rod (31); the ball head (316) is arranged in the ball sleeve (211).

3. The non-decoupled, electronic brake assist device of claim 1, wherein the brake assist device further comprises: one end of the first ball arm (31) close to the second ball arm (32) is provided with a sliding hole (311); the bottom of the sliding hole (311) is V-shaped; the sliding hole (311) is sleeved on the second ball rod (32), and the second ball rod (32) is not contacted with the bottom of the sliding hole (311); a rubber ball (36) is clamped between the hole bottom of the sliding hole (311) and the second ball rod (32).

4. The non-decoupled electronic brake assist device for solving the problem of pedal pressure foot as claimed in claim 3, wherein: the diameter of the rubber ball (36) is smaller than that of the sliding hole (311), and the rubber ball (36) is simultaneously in contact with the bottom of the sliding hole (311) and the second club (32).

5. The non-decoupled electronic brake assist device for solving the problem of pedal pressure foot as claimed in claim 3, wherein: the first ball arm (31) is provided with an air hole (315); the air hole (315) is communicated with the sliding hole (311); the diameter of the rubber ball (36) is larger than that of the air hole (315).

6. The non-decoupled electronic brake assist device for solving the problem of pedal pressure foot as claimed in claim 3, wherein: a key (51) is arranged on the nut (5), and the key (51) is positioned at one end, close to the threaded hole, of the nut (5) and is used for being connected with a transmission mechanism.