CN213981740U - Drum brake for parking controlled by motor - Google Patents
Drum brake for parking controlled by motor Download PDFInfo
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- CN213981740U CN213981740U CN202022420100.3U CN202022420100U CN213981740U CN 213981740 U CN213981740 U CN 213981740U CN 202022420100 U CN202022420100 U CN 202022420100U CN 213981740 U CN213981740 U CN 213981740U
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Abstract
The utility model discloses a drum brake of electric machine control parking. The brake shoe comprises a brake bottom plate, an upper return spring, a brake shoe, a lower return spring, a pressure spring assembly, a hydraulic wheel cylinder and an electric wheel cylinder; the cylinder body sets up horizontal jar hole, horizontal jar hole both ends dress piston spare, the motor is located outside the swivel nut, the one end of screw rod is overlapped through the screw thread in the swivel nut one end, the coaxial rigid coupling of motor and sun gear, central through-hole has been seted up to sun gear, be equipped with the engaged planetary gear around the sun gear, sun gear and planetary gear articulate on the planet carrier, but the tip axial displacement ground connection after the screw rod passes sun gear central through-hole, the swivel nut extends to the aperture department in horizontal jar hole and is connected with the piston spare at both ends. The utility model discloses with the whole set of drive mechanism embeds in the cylinder body, realized rotating through the motor and come the device that the control brake carries out parking braking.
Description
Technical Field
The utility model belongs to the technical field of vehicle parking braking equipment technique and specifically relates to a drum brake of motor control parking has been related to.
Background
With the development of the intellectualization of the automobile industry, the electronic parking function becomes a standard, and various electronic parking structures are provided for vehicles equipped with drum brakes. However, in the electronic parking structure matched with all drum brakes on the market, parking is completed outside the drum brakes through inhaul cables, and the efficiency is low. It is necessary to design an electronic parking device with higher efficiency
Disclosure of Invention
In order to solve the problem that exists among the background art, the utility model provides a drum brake of motor control parking.
The utility model adopts the following technical scheme:
the utility model comprises a brake bottom plate, an upper return spring, a brake shoe and a lower return spring; the brake shoe structure is characterized by further comprising hydraulic wheel cylinders and electric wheel cylinders, brake shoes are mounted on two sides of the brake base plate through pressure spring assemblies, the hydraulic wheel cylinders are mounted on the upper portion of the brake base plate, the electric wheel cylinders are mounted on the lower portion of the brake base plate, the upper end portions of the brake shoes on the two sides are connected through the hydraulic wheel cylinders, the upper portions of the brake shoes on the two sides are connected through upper return springs, the lower end portions of the brake shoes on the two sides are connected through the electric wheel cylinders, and the lower portions of the brake shoes on the two sides are connected through lower return springs.
The electric wheel cylinder comprises a cylinder body, a screw rod, a planet carrier, a planetary gear, a sun gear, a motor, a threaded sleeve and a piston piece; horizontal jar hole is seted up to the cylinder body, the piston spare all is equipped with at the both ends in horizontal jar hole, the screw rod, the planet carrier, sun gear, motor and swivel nut are all installed in horizontal jar hole of cylinder body, the motor is located outside around the swivel nut, the one end of screw rod is equipped with through the screw thread cover in the swivel nut one end, the output and the coaxial rigid coupling of sun gear of motor, central through-hole has been seted up to sun gear, be equipped with the planetary gear that the looks meshing is connected around the sun gear, sun gear and planetary gear all articulate and install on the planet carrier, sun gear's central through-hole is all worn to establish by screw rod and swivel nut, and the tip that the screw rod passed behind the sun gear central through-hole passes through keyway and swivel nut and is connected with axial displacement, the other end of swivel nut and screw rod extends to the hole department in horizontal jar hole and is connected with the piston spare at both ends respectively.
The piston piece comprises a protective cover, a piston and a sealing ring; the protective cover is arranged outside the hole end of the horizontal cylinder hole, the piston is arranged in the hole end of the horizontal cylinder hole, the outer end face of the piston is provided with a central boss, the central boss extends out of the central hole of the protective cover and is assembled in a matching mode, the outer peripheral face of the piston is connected with the hole wall of the horizontal cylinder hole through a sealing ring, and the inner end face of the piston is connected with the end face of the screw sleeve/screw rod.
The motor is a hollow motor.
The thread connected between the screw rod and the thread sleeve is a self-locking thread.
The utility model has the advantages that:
the utility model relates to a drum brake of electric machine control parking embeds a whole set of drive mechanism in the cylinder body, has realized the braking process through the electric control mode, can directly act on and produce the parking power on the brake shoe.
Drawings
FIG. 1 is an exploded view of a drum brake for motor-controlled parking according to the present invention;
in fig. 1: 1-a brake bottom plate, 2-a self-adjusting dial plate, 3-a self-adjusting screw rod, 4-an upper return spring, 5-a hydraulic wheel cylinder, 6-a brake shoe, 7-a pressure spring, 8-an electric wheel cylinder and 9-a lower return spring;
fig. 2 is a side view of the drum brake for motor-controlled parking according to the present invention.
FIG. 3 is an assembled cross-sectional view of the electric control wheel cylinder of the present invention;
in fig. 3: 8.1-cylinder body, 8.2-protective cover, 8.3-piston, 8.4-sealing ring, 8.5-screw, 8.6-planetary frame, 8.7-planetary gear, 8.8-sun gear, 8.9-motor and 8.10-screw sleeve.
Detailed Description
The drum brake of the present invention will be further described with reference to the accompanying drawings.
The specific implementation is as shown in fig. 1 and fig. 2, the brake comprises a brake bottom plate 1, a self-adjusting dial plate 2, a self-adjusting screw rod 3 and an upper return spring 4, the automatic adjusting device comprises a hydraulic wheel cylinder 5, brake shoes 6, a pressure spring 7, an electric wheel cylinder 8 and a lower odor-returning spring 9, wherein the hydraulic wheel cylinder 5 is installed on the upper portion of a brake bottom plate 1, the electric wheel cylinder 8 is installed on the lower portion of the brake bottom plate, the upper end portions of the brake shoes 6 on two sides are connected with a gap adjusting assembly through the hydraulic wheel cylinder 5, the upper portions of the brake shoes 6 on two sides are connected through an upper return spring 4, the gap adjusting assembly comprises an automatic adjusting plate 2 and an automatic adjusting screw rod 3, two ends of the automatic adjusting screw rod 3 are connected between the upper portions of the brake shoes 6 on two sides, the automatic adjusting screw rod 3 is connected with a tooth shifting end of the automatic adjusting plate 2, the other end of the automatic adjusting plate 2 is hinged to the brake shoe 6 on one side, the lower end portions of the brake shoes 6 on two sides are connected through the electric wheel cylinder 8, and the lower portions of the brake shoes 6 on two sides are connected through the lower return spring 9.
When the brake performs parking operation, the electric wheel cylinder 8 can continuously push the brake shoe 6 to move towards two sides until a load is generated between the brake shoe and an external device to generate braking force, and the current of the electric wheel cylinder 8 can be increased until a set target current value is reached and then the brake can be stopped.
When the brake executes parking release, the electric wheel cylinder 8 moves reversely to release force, the brake shoe 6 returns through the upper return spring 4 and the lower return spring 9 until the load of the brake shoe 6 and an external device is zero, and after the working current is constant, the electric wheel cylinder 8 stops working to release the brake.
As shown in fig. 3, the electric wheel cylinder 8 comprises a cylinder 8.1, a screw 8.5, a planet carrier 8.6, a planet gear 8.7, a sun gear 8.8, a motor 8.9, a screw sleeve 8.10 and a piston piece; horizontal cylinder hole is seted up to cylinder body 8.1, the piston spare all is equipped with at the both ends in horizontal cylinder hole, screw rod 8.5, planet carrier 8.6, planetary gear 8.7, sun gear 8.8, motor 8.9 and swivel nut 8.10 are all installed in cylinder body 8.1 horizontal cylinder hole, motor 8.9 is located around swivel nut 8.10 outside, the one end of screw rod 8.5 is overlapped through the screw thread in swivel nut 8.10 one end, the output of motor 8.9 and the coaxial rigid coupling of sun gear 8.8, motor 8.9 is hollow motor, outer lane stator links with cylinder body 1 admittedly, the inner circle rotor is hollow structure. A central through hole is formed in the sun gear 8.8, a plurality of planetary gears 8.7 which are meshed and connected with each other are arranged around the sun gear 8.8, the sun gear 8.8 and the planetary gears 8.7 are hinged to the planet carrier 8.6, the screw rod 8.5 and the threaded sleeve 8.10 penetrate through the central through hole of the sun gear 8.8, the end part of the screw rod 8.5, which penetrates through the central through hole of the sun gear 8.8, is axially movably connected with the threaded sleeve 8.10 through a key groove, and in the specific implementation, the axial length of the key is shorter than that of the strip-shaped groove; the other ends of the screw sleeve 8.10 and the screw 8.5 extend to the hole end of the horizontal cylinder hole and are respectively connected with the piston pieces at the two ends.
As shown in fig. 3, the piston member comprises a shield 8.2, a piston 8.3, a seal ring 8.4; the protective cover 8.2 is covered outside the hole end of the horizontal cylinder hole, the piston 8.3 is arranged in the hole end of the horizontal cylinder hole, the outer end face of the piston 8.3 is provided with a central boss, the central boss extends out of the central hole of the protective cover 8.2 and is assembled in a matching mode, the outer peripheral face of the piston 8.3 is connected with the hole wall of the horizontal cylinder hole through a sealing ring 8.4, and the inner end face of the piston 8.3 is connected with the end face of the screw sleeve 8.10/the screw rod 8.5. The utility model discloses a guard shield 8.2 and cylinder body 8.1 and piston 8.3 cooperation play sealed effect.
The thread connected between the screw 8.5 and the screw sleeve 8.10 is self-locking thread, so that the parking state of the vehicle when the vehicle is flamed out can be ensured.
The utility model discloses an implement the working process as follows:
after the motor 8.9 is electrified, the sun gear 8 which is fixedly connected is driven to rotate, the sun gear 8.8 drives the planet carrier 8.6 to rotate through the planet gear 8.7, the planet carrier 8.6 and the thread sleeve 8.10 have a circumferential coaxial structure and an axial movement limiting structure, the planet carrier 8.6 selectively drives the thread sleeve 8.10 to rotate circumferentially together, the thread sleeve 8.10 is meshed with the screw 8.5 in a threaded manner, the screw 8.5 is axially connected with the piston 8.3, and the screw 8.5 and the thread sleeve 8.10 generate axial displacement due to relative rotation.
When the electric control wheel cylinder works in the positive direction, the screw 8.5 and the screw sleeve 8.10 move towards the outer sides of the two sides, the piston 8.3 is pushed outwards, and the piston 8.3 pushes the brake shoe 6 to generate load; when the electric control wheel cylinder works reversely, the screw 8.5 and the screw sleeve 8.10 move towards the inner side of the center, and the piston 8.3 is loaded and returned by the lower return spring 9 connected with the brake shoe 6.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A drum brake with motor-controlled parking comprises a brake bottom plate (1), an upper return spring (4), a brake shoe (6) and a lower return spring (9); the method is characterized in that: the brake shoe rack is characterized by further comprising hydraulic wheel cylinders (5) and electric wheel cylinders (8), brake shoes (6) are mounted on the two sides of the brake base plate (1) through pressure spring assemblies, the hydraulic wheel cylinders (5) are mounted on the upper portion of the brake base plate (1), the electric wheel cylinders (8) are mounted on the lower portion of the brake base plate, the upper end portions of the brake shoes (6) on the two sides are connected through the hydraulic wheel cylinders (5), the upper portions of the brake shoes (6) on the two sides are connected through upper return springs (4), the lower end portions of the brake shoes (6) on the two sides are connected through the electric wheel cylinders (8), and the lower portions of the brake shoes (6) on the two sides are connected through lower return springs (9);
the electric wheel cylinder (8) comprises a cylinder body (8.1), a screw (8.5), a planet carrier (8.6), a planet gear (8.7), a sun gear (8.8), a motor (8.9), a threaded sleeve (8.10) and a piston piece; the horizontal cylinder hole is arranged on the cylinder body (8.1), piston pieces are arranged at two ends of the horizontal cylinder hole, a screw rod (8.5), a planet carrier (8.6), a planetary gear (8.7), a sun gear (8.8), a motor (8.9) and a thread sleeve (8.10) are arranged in the horizontal cylinder hole of the cylinder body (8.1), the motor (8.9) is positioned outside the periphery of the thread sleeve (8.10), one end of the screw rod (8.5) is sleeved in one end of the thread sleeve (8.10) through threads, the output end of the motor (8.9) is coaxially and fixedly connected with the sun gear (8.8), a central through hole is arranged on the sun gear (8.8), the planetary gear (8.7) which is connected in a meshed manner is arranged on the periphery of the sun gear (8.8), the sun gear (8.8) and the planetary gear (8.7) are both hinged and arranged on the planet carrier (8.6), the screw rod (8.5) and the thread sleeve (8.10) are arranged on the periphery of the sun gear (8.8.8), and can be connected with the central through the axial through hole of the central through groove (8.8.10), the other ends of the screw sleeve (8.10) and the screw rod (8.5) extend to the hole end of the horizontal cylinder hole and are respectively connected with the piston pieces at the two ends.
2. A motor-controlled parking drum brake according to claim 1, characterized in that:
the piston piece comprises a shield (8.2), a piston (8.3) and a sealing ring (8.4); a protective cover (8.2) is covered outside the hole end of the horizontal cylinder hole, a piston (8.3) is arranged in the hole end of the horizontal cylinder hole, a central boss is arranged on the outer end face of the piston (8.3), the central boss extends out of the central hole of the protective cover (8.2) and is matched and assembled, the outer peripheral face of the piston (8.3) is connected with the hole wall of the horizontal cylinder hole through a sealing ring (8.4), and the inner end face of the piston (8.3) is connected with the end face of a screw sleeve (8.10)/screw rod (8.5).
3. A motor-controlled parking drum brake according to claim 1, characterized in that:
the motor (8.9) is a hollow motor.
4. A motor-controlled parking drum brake according to claim 1, characterized in that:
the thread connected between the screw rod (8.5) and the thread sleeve (8.10) is a self-locking thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022420100.3U CN213981740U (en) | 2020-10-27 | 2020-10-27 | Drum brake for parking controlled by motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022420100.3U CN213981740U (en) | 2020-10-27 | 2020-10-27 | Drum brake for parking controlled by motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213981740U true CN213981740U (en) | 2021-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022420100.3U Active CN213981740U (en) | 2020-10-27 | 2020-10-27 | Drum brake for parking controlled by motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN213981740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701468A (en) * | 2022-03-29 | 2022-07-05 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
-
2020
- 2020-10-27 CN CN202022420100.3U patent/CN213981740U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701468A (en) * | 2022-03-29 | 2022-07-05 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
| CN114701468B (en) * | 2022-03-29 | 2023-05-12 | 淄博爱科工矿机械有限公司 | Stall intelligent protection system |
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