CN112443593A - Motor drive drum-type parking brake - Google Patents
Motor drive drum-type parking brake Download PDFInfo
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- CN112443593A CN112443593A CN202011289459.XA CN202011289459A CN112443593A CN 112443593 A CN112443593 A CN 112443593A CN 202011289459 A CN202011289459 A CN 202011289459A CN 112443593 A CN112443593 A CN 112443593A
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- brake shoe
- worm
- motor
- piston
- worm wheel
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- 230000005540 biological transmission Effects 0.000 claims abstract description 53
- 230000007246 mechanism Effects 0.000 claims abstract description 43
- 230000009347 mechanical transmission Effects 0.000 claims abstract description 7
- 230000009467 reduction Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 2
- 230000009471 action Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D51/00—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like
- F16D51/16—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis
- F16D51/18—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes
- F16D51/20—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots
- F16D51/22—Brakes with outwardly-movable braking members co-operating with the inner surface of a drum or the like shaped as brake-shoes pivoted on a fixed or nearly-fixed axis with two brake-shoes extending in opposite directions from their pivots mechanically actuated
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/04—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members
- F16H1/12—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes
- F16H1/16—Toothed gearings for conveying rotary motion without gears having orbital motion involving only two intermeshing members with non-parallel axes comprising worm and worm-wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/08—Profiling
- F16H55/0846—Intersecting-shaft arrangement of the toothed members
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
- H02K7/1163—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion
- H02K7/1166—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears where at least two gears have non-parallel axes without having orbital motion comprising worm and worm-wheel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Braking Arrangements (AREA)
- Gear Transmission (AREA)
Abstract
The invention discloses a motor-driven drum-type parking brake, which comprises a front brake shoe, an adjusting ratchet wheel and a rear brake shoe, wherein the front brake shoe, the adjusting ratchet wheel and the rear brake shoe are arranged on a brake bottom plate; the brake further comprises a transmission mechanism assembly, and the transmission mechanism assembly is connected with the front brake shoe and the rear brake shoe through a piston for supporting. In general, the invention has the advantages of ingenious conception and compact and reasonable structure, the worm and gear are integrated with the screw rod and the screw sleeve, the motor drives the worm and gear to drive so as to drive the piston to drive the front brake shoe to move to realize the brake operation, and the transmission time of the whole mechanical transmission is quicker and the efficiency is higher.
Description
Technical Field
The invention relates to the technical field of parking brakes, in particular to a motor-driven drum-type parking brake.
Background
At present, the brake applied to the electronic parking brake function of the automobile mainly adopts a caliper type EPB and a pull rope type EPB, the caliper type EPB is relatively high in cost and expensive in later maintenance, and the parking efficiency caused by a disc structure is not high. The guyed EPB is too heavy, the parts are complicated, the functional response time is too long, the cost is basically equal to that of the caliper EPB, and the guyed EPB is gradually eliminated in the market after being too lagged behind relative technology.
In order to solve the problems of the above electronic parking brake types, the present invention provides a motor-driven drum parking brake to solve the above disadvantages and meet practical requirements of automobile main engine plants and users.
Disclosure of Invention
The invention aims to provide a motor-driven drum type parking brake, which solves the problems of slow response and complex structure of the brake in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention relates to a motor-driven drum-type parking brake, which comprises a front brake shoe, an adjusting ratchet wheel and a rear brake shoe, wherein the front brake shoe, the adjusting ratchet wheel and the rear brake shoe are arranged on a brake bottom plate; the brake further comprises a transmission mechanism assembly, and the transmission mechanism assembly is connected with the front brake shoe and the rear brake shoe through a piston for supporting.
Furthermore, the transmission mechanism assembly comprises a motor reducing mechanism, a worm wheel and a screw rod, the output shaft end of the motor reducing mechanism is in transmission connection with one end of the worm, the worm is in inclined arrangement and meshing connection with the worm wheel, the screw rod is in threaded connection with the inner portion of the worm wheel, one end of the piston is fixedly connected with the rear brake shoe, and the salient point of the other end of the piston is in contact with the worm wheel.
Further, motor reduction gears's output shaft end with the tail end of worm alternates the cooperation and is connected, the number of heads of worm sets up to 2, the number of teeth of worm wheel sets up to 22, the worm wheel with the transmission screw thread outer wall of worm is 20 pressure angle and meshes mutually, the pitch of screw rod sets up to 2mm, and the tooth form angle of screw rod sets up 30, the fluting one end of piston with the horseshoe contact and the interlock of back brake shoe are motionless, the steel ball convex surface one end of piston with the concave surface one end contact of worm wheel just has relative roll trend.
Still further, the motor reduction mechanism specifically adopts two-stage planetary gear reduction, the transmission ratio of each stage is 4.5, the transmission ratio of the worm wheel and the worm is 11, the transmission ratio of the worm wheel and the screw is 11, and the total transmission ratio is 222.75.
Still further, the number of teeth of the worm wheel is designed to be 22, the modulus is set to be 0.65, the pressure angle is set to be 20 degrees, the thread pitch is designed to be 2, the number of heads of the worm is designed to be 2, the modulus is designed to be 0.65, and the thread pitch is set to be 2.041.
Furthermore, one end of the piston is provided with a U-shaped groove, and the U-shaped groove is in occlusion connection with a shoe of the rear brake shoe; one end of the piston is connected with a steel ball, and the steel ball protrudes out of the end face of the piston and is abutted against the concave face of the worm wheel.
And further, a motor speed reducing mechanism of the transmission mechanism assembly is electrically connected with a PLC (programmable logic controller) of the vehicle, and is transmitted to the motor speed reducing mechanism to start or stop working according to an electric control input signal sent by the PLC and a signal fed back by the stress condition of the mechanical transmission part.
Compared with the prior art, the invention has the beneficial technical effects that:
the invention relates to a motor-driven drum-type parking brake, which comprises a front brake shoe, an adjusting ratchet wheel and a rear brake shoe, wherein the front brake shoe, the adjusting ratchet wheel and the rear brake shoe are arranged on a brake bottom plate; the brake shoe brake device is characterized by further comprising a transmission mechanism assembly, wherein the transmission mechanism assembly comprises a motor speed reducing mechanism, a worm wheel and a screw rod, the output shaft end of the motor speed reducing mechanism is in transmission connection with one end of the worm, the worm is obliquely arranged and meshed with the worm wheel, the screw rod is in threaded connection with the inner part of the worm wheel, one end of the piston is immovable in contact with the top end of the rear brake shoe, and a convex point at the other end of the piston is in contact with; when the worm-gear transmission device works, the motor rotates in a positive rotation mode, kinetic energy is transmitted to the worm to rotate after the motor is subjected to speed reduction transmission through the secondary planetary gear, the worm drives the worm gear to perform transmission, the worm gear slides relative to a meshing part of the worm gear and gradually enters and gradually exits meshing to realize third-stage transmission, a convex point at the other end of the piston is in contact with the worm gear and has a relative rolling trend, the worm gear is used as a screw sleeve to be matched with the screw rod, and the screw sleeve is used as fourth-stage sub transmission; because the worm wheel (threaded sleeve) rotates, the piston is contacted with one end of the worm wheel to be relatively immobile, and the other end of the worm wheel causes the screw rod to rotate and roll to generate a stroke to be ejected out in the direction of the front brake shoe, so that the upper end of the front brake shoe is separated from the shoe supporting pin, after the brake shoe is contacted with a rotating brake disc, the brake drum drives the two brake shoes to rotate in the rotating direction under the action of friction torque until the rear brake shoe is abutted against the supporting pin, and then the brake shoes are further pressed against the brake disc. The rear shoe is in a force-increasing state at the moment, because the pressing force of the rear brake shoe comprises the thrust of the opening force of the screw rod to the rear brake shoe, and the thrust applied to the lower end of the rear brake shoe by the floating adjusting ratchet wheel is 2-3 times larger than the opening force under the action of the force-increasing action of the front brake shoe, the two brake shoes generate brake torque higher than the brake torque normally used to realize the parking function; after parking braking is finished, the motor reducing mechanism assembly receives a reverse rotation electric signal to drive the worm to rotate reversely, so that the worm wheel (threaded sleeve) rotates reversely, and meanwhile, the pulling force of the upper return spring returning to the initial position is received, the gap between the brake shoe and the brake disc is eliminated, and the parking braking of the automobile is relieved. Compared with a caliper type EPB and a pull rope type EPB, the special design of the speed reduction transmission mechanism with the worm and gear integrated with the screw rod and the threaded sleeve saves parts and is low in manufacturing cost, the response time is shortened by 0.3s, the product precision and noise are more perfect, the performance is high, the stability is high, and the working efficiency of the product is greatly improved.
In general, the invention has the advantages of ingenious conception and compact and reasonable structure, the worm and gear are integrated with the screw rod and the screw sleeve, the motor drives the worm and gear to drive so as to drive the piston to drive the front brake shoe to move to realize the brake operation, and the transmission time of the whole mechanical transmission is quicker and the efficiency is higher.
Drawings
The invention is further illustrated in the following description with reference to the drawings.
FIG. 1 is a front elevational view of a motor-driven drum parking brake in accordance with the present invention;
FIG. 2 is a right side view of the motor-driven drum parking brake of the present invention;
FIG. 3 is a schematic view of a coupling structure of the transmission assembly of the present invention;
FIG. 4 is a schematic view of the drive mechanism of the present invention;
description of reference numerals: 1. a front brake shoe; 2. adjusting the ratchet wheel; 3. a rear brake shoe; 4. an upper return spring; 5. a transmission mechanism assembly; 501. a worm; 502. a piston; 503. a turbine; 504. a screw; 6. a motor reduction mechanism; 7. braking the bottom plate; 8. a brake disc; 9. and a lower return spring.
Detailed Description
As shown in fig. 1 to 4, a motor-driven drum type parking brake includes a front brake shoe 1, an adjusting ratchet 2 and a rear brake shoe 3 mounted on a brake base plate 7, wherein the front brake shoe 1 and the rear brake shoe 3 are connected with an upper return spring 4, the upper ends of the front brake shoe 1 and the rear brake shoe 3 are hinged on a shoe support pin, and the lower ends of the front brake shoe 1 and the rear brake shoe 3 are connected with the adjusting ratchet 2 and a lower return spring 9 for gap adjustment; the brake further comprises a transmission mechanism assembly 5, wherein the transmission mechanism assembly 5 is connected with the front brake shoe 1 and the rear brake shoe 3 through a supporting piston 502.
As shown in fig. 3 and 4, the transmission mechanism assembly 5 includes a motor speed reducing mechanism, a worm 501, a worm wheel 503 and a screw rod 504, an output shaft end of the motor speed reducing mechanism is in transmission connection with one end of the worm 501, the worm 501 and the worm wheel 503 are in inclined arrangement and meshing connection, the screw rod 504 is connected to the worm wheel 503 through an internal thread, one end of the piston 502 is fixedly connected with the rear brake shoe 3, and a protruding point at the other end of the piston 502 is in contact with the worm wheel 503. And the motor speed reducing mechanism of the transmission mechanism assembly 5 is electrically connected with a PLC (programmable logic controller) of the vehicle, and is transmitted to the motor speed reducing mechanism to start or stop working according to an electric control input signal sent by the PLC and a signal fed back by the stress condition of the mechanical transmission part. The transmission mechanism assembly 5 determines the working time according to the input signal of the electronic control unit, and on the contrary, the electronic control unit determines the output signal of the next time according to the feedback signal of the stress condition of the mechanical transmission part of the transmission mechanism assembly 5. According to the abrasion condition of the front brake shoe 1 and the rear brake shoe 3, the electric control unit and the transmission mechanism assembly 5 work in cooperation to generate signals, so that the optimal ejection distance of the transmission mechanism assembly 5 is determined, the self-adjusting function is achieved, and reasonable gaps are kept among the front brake shoe 1, the rear brake shoe 3 and the brake disc 8.
Specifically, the output shaft end of the motor reduction mechanism is in inserting fit connection with the tail end of the worm 501, the number of the heads of the worm 501 is set to be 2, the number of teeth of the worm wheel 503 is set to be 22, the worm wheel 503 is meshed with the outer wall of the transmission thread of the worm 501 by a pressure angle of 20 degrees, the thread pitch of the screw rod 504 is set to be 2mm, the thread form angle of the screw rod 504 is set to be 30 degrees, the slotting end of the piston 502 is in contact with and is meshed with the horseshoe of the rear brake shoe 3, and the convex end of the steel ball of the piston 502 is in contact with the concave end of the worm wheel 503 and has a relative rolling trend.
The motor speed reducing mechanism specifically adopts a two-stage planetary gear for speed reduction, the transmission ratio of each stage is 4.5, the transmission ratio of the worm wheel 503 to the worm 501 is 11, the transmission ratio of the worm wheel 503 to the screw 504 is 11, and the total transmission ratio is 222.75.
Specifically, in one embodiment, the number of teeth of the worm wheel 3 is designed to be Z222, the modulus is set to 0.65, the lead angle is set to 20 °, the pitch is set to 2, the pitch diameter is 14.3mm, the base circle is 13.43mm, the deflection coefficient is 0.6, the crest height coefficient is 1, the tip clearance coefficient is 0.25, and the tooth form angle is 30 °. The number of the heads of the worm 1 is designed to be Z1The modulus is designed to be 0.65, the pitch is set to 2.041, and the lead is 4.082.
Furthermore, appropriate adjustments of relevant parameters can be made according to the actual required transmission ratio.
One end of the piston 502 is provided with a U-shaped groove, and the U-shaped groove is meshed and connected with a shoe of the rear brake shoe 3; one end of the piston 502 is connected with a steel ball which protrudes out of the end surface of the piston 502 and is abutted against the concave surface of the worm wheel 503.
The working process of the invention is as follows:
firstly, the positive electrode and the negative electrode of a motor are electrified, a current instruction is input by a vehicle-mounted electronic control unit, the motor rotates in a positive rotation mode, kinetic energy is transmitted to a worm 501 to rotate after the motor is subjected to speed reduction transmission through a secondary planetary gear, the worm 501 drives a worm wheel 503 to slide relative to a meshing position of the worm wheel 503, and gradually enters and gradually exits meshing to realize third-stage transmission, a piston 502 is an independent part, one end of the piston is in contact with a rear brake shoe 3 and does not rotate, a convex point at the other end of the piston is in contact with the worm wheel 503 and has a relative rolling trend, and the worm wheel 503 is used as a threaded sleeve at the moment; because the worm wheel 503 (threaded sleeve) rotates, the piston 502 contacts with one end of the piston relatively immovably, and one end of the piston causes the screw rod 504 to rotate and roll to generate a stroke to eject out towards the direction of the front brake shoe 1, so that the upper ends of the front brake shoe and the rear brake shoe are both away from the shoe supporting pin, and after the brake shoes are contacted with a rotating brake disc, the brake disc drives the two brake shoes to rotate along the rotating direction under the action of friction torque until the rear brake shoe abuts against the brake disc, then the brake shoes and the brake disc are further pressed, at the moment, the rear brake shoe is in a force increasing state, and under the action of the force increasing of the front brake shoe, the thrust force applied to the lower end of the rear brake shoe by the floating adjusting ratchet 2 is 2-3 times larger than the opening force, and the two brake shoes. The worm gear and the worm are integrated with the screw sleeve, and the whole mechanical transmission is quicker in corresponding time and higher in efficiency.
When the parking brake is finished, the motor rotates reversely, and the motor is subjected to a series of reverse transmissions and the tension of the upper return spring, so that the gap between the brake shoe and the brake disc 8 is eliminated, and the parking brake of the automobile is released.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (7)
1. A motor-driven drum type parking brake comprises a front brake shoe (1), an adjusting ratchet wheel (2) and a rear brake shoe (3) which are arranged on a brake bottom plate (7), wherein the front brake shoe (1) and the rear brake shoe (3) are connected with upper return springs (4), the upper ends of the front brake shoe (1) and the rear brake shoe (3) are hinged on shoe supporting pins, and the lower ends of the front brake shoe (1) and the rear brake shoe (3) are connected with the adjusting ratchet wheel (2) and a lower return spring (9) for adjusting a gap; the method is characterized in that: the brake further comprises a transmission mechanism assembly (5), wherein the transmission mechanism assembly (5) is connected with the front brake shoe (1) and the rear brake shoe (3) through a supporting piston (502).
2. The motor-driven drum parking brake of claim 1, characterized in that: the transmission mechanism assembly (5) comprises a motor speed reducing mechanism, a worm (501), a worm wheel (503) and a screw rod (504), an output shaft end of the motor speed reducing mechanism is in transmission connection with one end of the worm (501), the worm (501) is in inclined arrangement, meshing connection with the worm wheel (503), the screw rod (504) is in threaded connection with the inner portion of the worm wheel (503), one end of the piston (502) is fixedly connected with the rear brake shoe (3), and a protruding point at the other end of the piston (502) is in contact with the worm wheel (503).
3. The motor-driven drum parking brake of claim 2, characterized in that: motor reduction gears's output shaft end with the tail end of worm (501) alternates the cooperation and connects, the head number of worm (501) sets up to 2, the number of teeth of worm wheel (503) sets up to 22, worm wheel (503) with the transmission screw outer wall of worm (501) is 20 pressure angle and meshes mutually, the pitch of screw rod (504) sets up to 2mm, and the tooth form angle of screw rod (504) sets up 30, the fluting one end of piston (502) with the horseshoe contact and the interlock of back brake shoe (3) are motionless, the convex steel ball one end of piston (502) with the concave surface one end contact of worm wheel (503) just has the relative roll trend.
4. The motor-driven drum parking brake of claim 2, characterized in that: the motor speed reducing mechanism is specifically reduced by adopting a two-stage planetary gear, the transmission ratio of each stage is 4.5, the transmission ratio of the worm wheel (503) and the worm (501) is 11, the transmission ratio of the worm wheel (503) and the screw (504) is 11, and the total transmission ratio is 222.75.
5. The motor-driven drum parking brake of claim 2, characterized in that: the number of teeth of the worm wheel (503) is designed to be 22, the modulus is set to be 0.65, the pressure angle is set to be 20 degrees, the thread pitch is designed to be 2, the number of heads of the worm (501) is designed to be 2, the modulus is designed to be 0.65, and the thread pitch is set to be 2.041.
6. The motor-driven drum parking brake of claim 2, characterized in that: one end of the piston (502) is provided with a U-shaped groove, and the U-shaped groove is meshed and connected with a shoe of the rear brake shoe (3); one end of the piston (502) is connected with a steel ball, and the steel ball protrudes out of the end face of the piston (502) and is abutted against the concave face of the worm wheel (503).
7. The motor-driven drum parking brake of claim 1, characterized in that: and a motor speed reducing mechanism of the transmission mechanism assembly (5) is electrically connected with a PLC (programmable logic controller) of the vehicle, and is transmitted to the motor speed reducing mechanism to start or stop working according to an electric control input signal sent by the PLC and a signal fed back by the stress condition of a mechanical transmission part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289459.XA CN112443593A (en) | 2020-11-18 | 2020-11-18 | Motor drive drum-type parking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011289459.XA CN112443593A (en) | 2020-11-18 | 2020-11-18 | Motor drive drum-type parking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112443593A true CN112443593A (en) | 2021-03-05 |
Family
ID=74738252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011289459.XA Pending CN112443593A (en) | 2020-11-18 | 2020-11-18 | Motor drive drum-type parking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112443593A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH112261A (en) * | 1997-06-16 | 1999-01-06 | Akebono Brake Ind Co Ltd | Wheel cylinder for drum brake device |
| US20080302620A1 (en) * | 2007-06-11 | 2008-12-11 | Akebono Brake Industry Co., Ltd. | Drum brake apparatus |
| CN106460978A (en) * | 2014-06-26 | 2017-02-22 | 曙制动器工业株式会社 | Drum brake device |
| CN206812987U (en) * | 2016-10-17 | 2017-12-29 | 现代摩比斯株式会社 | Electronic brake device |
| CN214424956U (en) * | 2020-11-18 | 2021-10-19 | 霸州市华诚汽车制动器有限公司 | Motor drive drum-type parking brake |
-
2020
- 2020-11-18 CN CN202011289459.XA patent/CN112443593A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH112261A (en) * | 1997-06-16 | 1999-01-06 | Akebono Brake Ind Co Ltd | Wheel cylinder for drum brake device |
| US20080302620A1 (en) * | 2007-06-11 | 2008-12-11 | Akebono Brake Industry Co., Ltd. | Drum brake apparatus |
| CN106460978A (en) * | 2014-06-26 | 2017-02-22 | 曙制动器工业株式会社 | Drum brake device |
| CN206812987U (en) * | 2016-10-17 | 2017-12-29 | 现代摩比斯株式会社 | Electronic brake device |
| CN214424956U (en) * | 2020-11-18 | 2021-10-19 | 霸州市华诚汽车制动器有限公司 | Motor drive drum-type parking brake |
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