CN218625158U - Planetary gear system and ball screw combined transmission mechanism of brake - Google Patents
Planetary gear system and ball screw combined transmission mechanism of brake Download PDFInfo
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- CN218625158U CN218625158U CN202222821793.6U CN202222821793U CN218625158U CN 218625158 U CN218625158 U CN 218625158U CN 202222821793 U CN202222821793 U CN 202222821793U CN 218625158 U CN218625158 U CN 218625158U
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- ball screw
- permanent magnet
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Abstract
The utility model belongs to the technical field of braking system technique and specifically relates to a planetary gear system and ball combination drive mechanism of stopper. A planetary gear system and ball screw combination drive mechanism of stopper which characterized in that: the driving shaft of the permanent magnet synchronous motor is coupled with a motor gear, the motor gear is engaged with an idle gear, the idle gear is engaged with a planetary gear train input gear, the planetary gear train input gear is coupled with one end of a planetary gear train, the other end of the planetary gear train is connected with one end of a ball screw assembly, and the other end of the ball screw assembly is connected with a piston; a ratchet wheel and pawl component is connected between the permanent magnet synchronous motor and the motor gear; and the pressure sensor is connected between the planetary gear train and the ball screw assembly. Compared with the prior art, the planetary gear system and ball screw combined mechanism is used for replacing the traditional hydraulic brake, and the electromagnet is used for controlling the pawl, so that the aims of quick brake response, cleanness, large load, accurate return and space saving are fulfilled.
Description
Technical Field
The utility model belongs to the technical field of braking system technique and specifically relates to a planetary gear system and ball combination drive mechanism of stopper.
Background
In the traditional hydraulic brake, a hydraulic master cylinder of a vehicle is controlled by a brake pedal, brake fluid is transmitted to brake slave cylinders of each wheel through a hydraulic pipeline, and then friction plates are pushed by each slave cylinder to brake. Although the hydraulic braking energy can meet the braking requirement of the vehicle, the hydraulic braking energy also has the problems of slow response, oil leakage, easy pollution, large occupied space and the like.
Disclosure of Invention
The utility model discloses an overcome prior art not enough, provide a planetary gear system and ball combination drive mechanism of stopper, use planetary gear system and ball combination drive mechanism to replace traditional hydraulic braking to use the electro-magnet control pawl, make the separation and reunion of ratchet pawl realize the switching of parking and driving state, realize that the braking response is fast, clean, load is big, the return is accurate and save space's purpose, simple structure is practical.
In order to realize the purpose, the planetary gear system and ball screw combined transmission mechanism of the brake comprises a permanent magnet synchronous motor, a gear, a ball screw assembly and a piston, and is characterized in that: the driving shaft of the permanent magnet synchronous motor is coupled with a motor gear, the motor gear is engaged with an idle gear, the idle gear is engaged with a planetary gear train input gear, the planetary gear train input gear is coupled with one end of a planetary gear train, the other end of the planetary gear train is connected with one end of a ball screw assembly, and the other end of the ball screw assembly is connected with a piston; a ratchet wheel and pawl component is connected between the permanent magnet synchronous motor and the motor gear; and the pressure sensor is connected between the planetary gear train and the ball screw assembly.
The ratchet wheel and pawl assembly comprises an electromagnet assembly, a pawl and a ratchet wheel, one end of the electromagnet assembly is connected with the pawl, and the ratchet wheel is arranged below the pawl; the ratchet shaft is connected to the driving shaft of the permanent magnet synchronous motor.
The sensor assembly comprises a sensor, a permanent magnet block, a sensor shell and a baffle plate, wherein the permanent magnet block is arranged in the sensor shell, the sensor is arranged above the permanent magnet block, and one side of the sensor shell is connected with the baffle plate; the electromagnet assembly comprises an electromagnet shell, a push rod, a permanent magnet and a coil, wherein the permanent magnet is arranged in the electromagnet shell, one end of the permanent magnet is connected with a permanent magnet block through a connecting rod, the other end of the permanent magnet is connected with the push rod, and the outer side of the permanent magnet is connected with the coil through an electromagnetic wire frame.
One end of the push rod is connected with the permanent magnet, and the other end of the push rod penetrates through the electromagnet shell and is connected with the pawl.
The sensor shell is characterized in that an opening at one side of the electromagnet shell is embedded at the opening at the tail part of the sensor shell, and the baffle is positioned at the opening at the tail part of the sensor shell.
The planetary gear train comprises a sun gear, a planetary gear, a bearing, a planetary carrier and a gear ring, wherein the middle part of the sun gear is connected with a sun gear shaft, one end of the sun gear shaft is coupled with an input gear of the planetary gear train, and the other end of the sun gear shaft is connected with the planetary carrier; the outer edge of the sun wheel is meshed with one end of a plurality of planet wheels, and the other end of the planet wheel is meshed with the inner edge of the gear ring.
Bearings are respectively arranged in the planet carriers positioned at the front side and the rear side of the sun wheel; the inner side of the tail end of the planet carrier is provided with a planet carrier internal spline.
The tail end of the planet carrier is connected with a screw rod of the ball screw assembly through an internal spline of the planet carrier, and a nut of the ball screw assembly is connected with the piston.
Compared with the prior art, the utility model, a planetary gear system and ball screw combination drive mechanism of stopper are provided, use planetary gear system and ball screw combination to replace traditional hydraulic braking to use the electro-magnet control pawl, make the separation and reunion of ratchet pawl realize the switching of parking and driving state, realize that the braking response is fast, clean, load is big, the return is accurate and save space's purpose, simple structure is practical.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the planetary gear train structure of the present invention.
Fig. 3 is a schematic structural view of the middle ratchet pawl assembly of the present invention.
Fig. 4 is a schematic structural view of the electromagnet assembly.
Figure 5 is a cross-sectional view of an electromagnet assembly.
Referring to fig. 1 to 5,1, it is a permanent magnet synchronous motor, 2 is a ratchet and pawl component, 2-1 is an electromagnet component, 2-1-1 is a sensor assembly, 2-1-2 is an electromagnet assembly, 2-1-3 is a sensor, 2-1-4 is a permanent magnet block, 2-1-5 is a sensor housing, 2-1-6 is a baffle, 2-1-7 is an electromagnet housing, 2-1-8 is a push rod, 2-1-9 is a permanent magnet, 2-1-10 is a coil, 2-2 is a pawl, 2-3 is a ratchet, 3 is a motor gear, 4 is an idler gear, 5 is a planetary gear train input gear train, 6-1 is a sun gear, 6-2 is a planetary gear train, 6-3 is a bearing, 6-4 is a planetary gear train, 6-5 is a gear ring, 6-6 is a planetary gear train internal spline, 6-7 is a sun gear shaft, 7 is a pressure sensor, 8 is a ball screw component, and 9 is a piston.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 5, a driving shaft of a permanent magnet synchronous motor 1 is coupled with a motor gear 3, the motor gear 3 is engaged with an idle gear 4, the idle gear 4 is engaged with a planetary gear train input gear 5, the planetary gear train input gear 5 is coupled with one end of a planetary gear train 6, the other end of the planetary gear train 6 is coupled with one end of a ball screw assembly 8, and the other end of the ball screw assembly 8 is coupled with a piston 9; a ratchet wheel and pawl component 2 is connected between the permanent magnet synchronous motor 1 and the motor gear 3; and a pressure sensor 7 is connected between the planetary gear train 6 and the ball screw assembly 8.
The ratchet wheel and pawl assembly 2 comprises an electromagnet assembly, a pawl and a ratchet wheel, one end of the electromagnet assembly 2-1 is connected with the pawl 2-2, and the ratchet wheel 2-3 is arranged below the pawl 2-2; the ratchet wheel 2-3 is coupled on the driving shaft of the permanent magnet synchronous motor 1.
The electromagnet assembly 2-1 comprises a sensor assembly and an electromagnet assembly, the sensor assembly 2-1-1 comprises a sensor, a permanent magnet block, a sensor shell and a baffle, the permanent magnet block 2-1-4 is arranged in the sensor shell 2-1-5, the sensor 2-1-3 is arranged above the permanent magnet block 2-1-4, and one side of the sensor shell 2-1-5 is connected with the baffle 2-1-6; the electromagnet assembly 2-1-2 comprises an electromagnet shell, a push rod, a permanent magnet and a coil, wherein the permanent magnet 2-1-9 is arranged in the electromagnet shell 2-1-7, one end of the permanent magnet 2-1-9 is connected with the permanent magnet block 2-1-4 through a connecting rod, the other end of the permanent magnet 2-1-9 is connected with the push rod 2-1-8, and the coil 2-1-10 is arranged on the outer side of the permanent magnet 2-1-9 through an electromagnetic wire frame.
One end of the push rod 2-1-8 is connected with the permanent magnet 2-1-9, and the other end of the push rod 2-1-8 penetrates through the electromagnet shell 2-1-7 and is connected with the pawl 2-2.
An opening at one side of the electromagnet shell 2-1-7 is embedded at an opening at the tail part of the sensor shell 2-1-5, and the baffle 2-1-6 is positioned at the opening at the tail part of the sensor shell 2-1-5.
The planetary gear train 6 comprises a sun gear, a planetary gear, a bearing, a planet carrier and a gear ring, wherein the middle part of the sun gear 6-1 is connected with a sun gear shaft 6-7, one end of the sun gear shaft 6-7 is connected with the input gear 5 of the planetary gear train in a shaft mode, and the other end of the sun gear shaft 5-7 is connected with the planet carrier 6-4; the outer edge of the sun wheel 6-1 is meshed and connected with one end of a plurality of planet wheels 6-2, and the other end of the planet wheel 6-2 is meshed and connected with the inner edge of the gear ring 6-5.
Bearings 6-3 are respectively arranged in the planet carriers 6-4 positioned at the front side and the rear side of the sun gear 6-1; the inner side of the tail end of the planet carrier 6-4 is provided with a planet carrier internal spline 6-6.
The tail end of the planet carrier 6-4 is connected with a screw rod of the ball screw assembly 8 through an internal spline 6-6 of the planet carrier, and a nut of the ball screw assembly 8 is connected with a piston 9.
As shown in figures 1 and 2, a motor gear 3 and a ratchet wheel 2-3 are pressed on a permanent magnet synchronous motor 1 and drive an idler gear 4, wherein an electromagnet assembly 2-1 controls the clutch of a pawl 2-2 and the ratchet wheel 2-3, the idler gear 4 drives a planetary gear train input gear 5, the planetary gear train input gear 5 is pressed on a sun gear shaft 6-7 in a planetary gear train 6, the sun gear 6-1 drives a planetary gear 6-2 in the planetary gear train 6, a gear ring 6-5 and a ball screw assembly 8 are connected through a planet carrier internal spline 6-6 in a planet carrier 6-4, and a planet carrier internal spline 6-6 on the planet carrier 6-4 in the planetary gear train 6 drives an external spline of a screw rod in the ball screw assembly 8. The bearings 6-3 on the front side and the rear side of the sun gear 6-1 play a supporting role, and the ball screw assembly 8 is axially and sequentially provided with an axial pressure sensor 7, an axial push plate and a thrust bearing assembly and is connected with a piston 9. The permanent magnet synchronous motor 1 drives the gear and the ball screw assembly 8 to drive the piston 9 to move together, the rotary motion is converted into linear motion, and the braking and parking functions are switched through the electromagnet assembly 2-1, the ratchet 2-3 and the pawl 2-2.
As shown in fig. 3, the pawl 2-2 is integrated on the electromagnet assembly 2-1, so that the number of parts is greatly reduced, and the response time of the pawl 2-2 is improved. The electromagnet assembly 2-1 and the ratchet wheel 2-3 are arranged by adopting a vertical axis, so that the ratchet wheel 2-3 and the pawl 2-2 have higher spatial freedom.
The ratchet pawl adopts the barb formula, can effectively prevent to block and deviate from and the unstable defect of locking, then need connect the rotation piece contrarotation of ratchet when opening the pawl and cooperate the electromagnetic actuator to promote the pawl application to make it open.
By utilizing the characteristics of forward rotatable rotation and reverse blocking of the ratchet wheel, a corresponding ratchet wheel and pawl structure is designed, and the position of the claw is controlled by matching with a corresponding controller, so that the purposes of blocking and releasing are achieved. The electromagnetic control mechanism pushes the push rod head to push out and lift the pawl, and the state is a driving state at the moment; the push rod head of the electromagnetic control mechanism retracts to put down the pawl and clamp the ratchet wheel, and the parking state is realized at the moment.
As shown in fig. 4 and 5, the electromagnet housings 2-1-7 can be attracted by magnetic force when the inner rotor moves to the left end and the right end, so that stable control during parking and driving is achieved; the coils 2-1-10 can keep weak current after being electrified, so that the situation that the left magnetic force and the right magnetic force are the same when the internal rotor moves to an absolute middle position due to strong vibration and the friction force generated inside is added is prevented, the internal rotor is blocked at the middle position, and the internal rotor is used for internal system logic detection to assist the position sensor to judge the position for the second time, and double redundancy function safety judgment can be achieved.
Based on the interaction of the permanent magnet and the electromagnetic coil, the quick-response axial line push-pull movement is realized, and the permanent magnet is utilized to magnetize the actuator shell to achieve the bidirectional holding function of the push-pull position.
The axial reciprocating application of the push rod head and the self-holding of the front dead point and the rear dead point are realized by the mutual matching of the electromagnetic force and the magnetic force of the permanent magnet, so that the vibration during the service braking is resisted; the external sensor monitors the position of the push rod head in real time by utilizing the Hall effect, and identifies the driving and parking states.
The utility model discloses use planetary gear system and ball screw combined mechanism to replace traditional hydraulic braking to use the electro-magnet control pawl, make the separation and reunion of ratchet pawl realize the switching of parking and driving state, realize that the braking response is fast, clean, load is big, the return is accurate and save space's purpose, simple structure is practical.
Claims (8)
1. The utility model provides a planetary gear system and ball screw combination drive mechanism of stopper, includes PMSM, gear, ball screw subassembly, piston, its characterized in that: a driving shaft of the permanent magnet synchronous motor (1) is coupled with a motor gear (3), the motor gear (3) is engaged with an idle gear (4), the idle gear (4) is engaged with a planetary gear train input gear (5), the planetary gear train input gear (5) is coupled with one end of a planetary gear train (6), the other end of the planetary gear train (6) is connected with one end of a ball screw component (8), and the other end of the ball screw component (8) is connected with a piston (9); a ratchet wheel and pawl component (2) is connected between the permanent magnet synchronous motor (1) and the motor gear (3); and a pressure sensor (7) is connected between the planetary gear train (6) and the ball screw assembly (8).
2. A combined planetary gear system and ball screw transmission of a brake according to claim 1, wherein: the ratchet wheel and pawl assembly (2) comprises an electromagnet assembly, a pawl and a ratchet wheel, one end of the electromagnet assembly (2-1) is connected with the pawl (2-2), and the ratchet wheel (2-3) is arranged below the pawl (2-2); the ratchet wheel (2-3) is coupled on a driving shaft of the permanent magnet synchronous motor (1) in a shaft mode.
3. A combined planetary gear system and ball screw transmission mechanism for a brake as claimed in claim 2, wherein: the electromagnet assembly (2-1) comprises a sensor assembly and an electromagnet assembly, the sensor assembly (2-1-1) comprises a sensor, a permanent magnet block, a sensor shell and a baffle, the permanent magnet block (2-1-4) is arranged in the sensor shell (2-1-5), the sensor (2-1-3) is arranged above the permanent magnet block (2-1-4), and one side of the sensor shell (2-1-5) is connected with the baffle (2-1-6); the electromagnet assembly (2-1-2) comprises an electromagnet shell, a push rod, a permanent magnet and a coil, wherein the permanent magnet (2-1-9) is arranged in the electromagnet shell (2-1-7), one end of the permanent magnet (2-1-9) is connected with a permanent magnet block (2-1-4) through a connecting rod, the other end of the permanent magnet (2-1-9) is connected with the push rod (2-1-8), and the coil (2-1-10) is arranged on the outer side of the permanent magnet (2-1-9) through an electromagnetic wire frame.
4. A combined planetary gear system and ball screw transmission of a brake according to claim 3, characterized in that: one end of the push rod (2-1-8) is connected with the permanent magnet (2-1-9), and the other end of the push rod (2-1-8) penetrates through the electromagnet shell (2-1-7) and is connected with the pawl (2-2).
5. A combined planetary gear system and ball screw transmission of a brake according to claim 3, characterized in that: an opening at one side of the electromagnet shell (2-1-7) is embedded at an opening at the tail part of the sensor shell (2-1-5), and the baffle (2-1-6) is positioned at the opening at the tail part of the sensor shell (2-1-5).
6. A combined planetary gear system and ball screw transmission of a brake as claimed in claim 1, wherein: the planetary gear train (6) comprises a sun gear, a planet gear, a bearing, a planet carrier and a gear ring, wherein the middle part of the sun gear (6-1) is connected with a sun gear shaft (6-7), one end of the sun gear shaft (6-7) is connected with an input gear (5) of the planetary gear train in a shaft mode, and the other end of the sun gear shaft (6-7) is connected with the planet carrier (6-4); the outer edge of the sun wheel (6-1) is meshed and connected with one end of a plurality of planet wheels (6-2), and the other end of the planet wheel (6-2) is meshed and connected with the inner edge of the gear ring (6-5).
7. A combined planetary gear system and ball screw transmission of a brake according to claim 6, wherein: bearings (6-3) are respectively arranged in the planet carriers (6-4) positioned at the front side and the rear side of the sun gear (6-1); the inner side of the tail end of the planet carrier (6-4) is provided with a planet carrier internal spline (6-6).
8. A combined planetary gear system and ball screw transmission of a brake according to claim 6, wherein: the tail end of the planet carrier (6-4) is connected with a screw rod of the ball screw assembly (8) through an internal spline (6-6) of the planet carrier, and a nut of the ball screw assembly (8) is connected with the piston (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222821793.6U CN218625158U (en) | 2022-10-26 | 2022-10-26 | Planetary gear system and ball screw combined transmission mechanism of brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222821793.6U CN218625158U (en) | 2022-10-26 | 2022-10-26 | Planetary gear system and ball screw combined transmission mechanism of brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218625158U true CN218625158U (en) | 2023-03-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222821793.6U Active CN218625158U (en) | 2022-10-26 | 2022-10-26 | Planetary gear system and ball screw combined transmission mechanism of brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218625158U (en) |
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2022
- 2022-10-26 CN CN202222821793.6U patent/CN218625158U/en active Active
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