CN222772562U - Linear brake actuator - Google Patents
Linear brake actuator Download PDFInfo
- Publication number
- CN222772562U CN222772562U CN202421738272.7U CN202421738272U CN222772562U CN 222772562 U CN222772562 U CN 222772562U CN 202421738272 U CN202421738272 U CN 202421738272U CN 222772562 U CN222772562 U CN 222772562U
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- transmission
- gear
- shell
- nut
- friction plate
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Abstract
The utility model discloses a linear brake actuator which comprises a shell and a transmission gear rotatably arranged on the shell, wherein an electromagnet is embedded on the transmission gear, a transmission nut with the end part extending out of the shell is slidably arranged on the transmission gear, a transmission connecting part is arranged at the end part extending out of the transmission nut, a thrust rod extending along the axial direction of the transmission nut is arranged on the transmission nut, a magnetic chuck is meshed with the transmission nut, a first friction plate is arranged on the magnetic chuck, a second friction plate corresponding to the first friction plate is arranged on the transmission gear, a return spring abutting against the first friction plate is sleeved on the thrust rod, a speed reducing gear group in transmission connection with the transmission gear is arranged in the shell, a motor connected with the speed reducing gear group is arranged on the shell, the electromagnet and the motor are separated by the return spring with the magnetic chuck in a reset mode, and contact braking power is transmitted outwards, and the condition that the motor is damaged or generates heat due to continuous connection can be avoided under the condition.
Description
Technical Field
The utility model relates to the technical field of brake devices, in particular to a linear brake actuator.
Background
The vehicle braking system is provided with an active braking structure, the linear braking structure is controlled by a motor to realize the power input of speed reduction and braking in the active braking process, the vehicle braking system generally comprises a motor, a transmission nut and a driving gear, the motor drives the driving gear to rotate, the transmission nut is used for realizing power output, the transmission nut is connected with a power part of the vehicle to realize the direction speed reduction and braking, the transmission nut and the driving gear coaxially and synchronously rotate, the motor is possibly positioned in a braking state under the condition of motor failure or power failure, the linear braking actuator cannot reset, the contact part is always in a braking state under the condition of no resetting, and the motor is easy to damage or generate heat.
Disclosure of utility model
First technical problem
The utility model aims to provide a linear brake actuator, which solves the problem that a motor-driven linear brake actuator cannot be actively reset under the condition of power failure in the prior art.
(II) technical scheme
In order to achieve the above purpose, the present utility model provides the following technical solutions:
A linear brake actuator comprises a shell and a transmission gear rotatably mounted on the shell, wherein an electromagnet is embedded on the transmission gear, a transmission nut with the end portion extending out of the shell is slidably mounted on the transmission gear, a transmission connecting portion is arranged at the end portion extending out of the transmission nut, a thrust rod extending along the axis direction of the transmission nut is arranged on the transmission nut, a magnetic chuck is meshed with the transmission nut, a first friction plate is arranged on the magnetic chuck, a second friction plate corresponding to the first friction plate is arranged on the transmission gear, a return spring abutting between the shell and the transmission nut is sleeved on the thrust rod, a speed reduction gear set in transmission connection with the transmission gear is mounted in the shell, and a motor connected with the speed reduction gear set is mounted on the shell.
Preferably, the speed reducing gear group comprises a first large gear and a first small gear which are coaxially fixed, the first small gear is meshed with the transmission gear, a second small gear is installed on an output shaft of the motor and meshed with the first large gear, and the first large gear and the first small gear are rotatably installed in the shell.
Preferably, the transmission connection part is of a tooth structure.
Preferably, the thrust rod is provided with a thread structure which is tightly matched with the transmission nut.
Preferably, the end part of the thrust rod extending out of the transmission nut is fixedly provided with a U-shaped connecting block, and the U-shaped connecting block is provided with a through connecting hole.
Preferably, the shell is provided with a sliding cylinder extending outwards, and the return spring is arranged in the sliding cylinder.
(III) beneficial effects
The transmission nut is separated from the transmission gear, the transmission gear is driven to rotate under the cooperation of the motor and the speed reduction gear group, when braking power transmission is required to be realized, the electromagnet attracts the magnetic chuck to approach, so that the first friction plate on the magnetic chuck is combined with the second friction plate on the transmission gear to rotate the transmission nut and the thrust rod, and braking power transmission is realized outwards through the transmission connecting part;
Under the condition that the electromagnet and the motor are in power failure, the return spring brings the magnetic chuck to reset to separate the first friction plate from the second friction plate, and the contact braking power is transmitted outwards, so that the condition that the motor is damaged or generates heat due to continuous connection can be avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present utility model;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;
FIG. 3 is a schematic view of a structure with a housing removed according to an embodiment of the present utility model;
In fig. 1 to 3, the correspondence between the component names or lines and the drawing numbers is:
the device comprises a shell 1, a transmission gear 2, an electromagnet 3, a transmission nut 4, a transmission connecting part 5, a thrust rod 6, a magnetic chuck 7, a first friction plate 8, a second friction plate 9, a return spring 10, a speed reduction gear group 11, a motor 12, a first large gear 13, a first pinion 14, a second pinion 15, a U-shaped connecting block 16, a connecting hole 17 and a sliding cylinder 18.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Referring to fig. 1-3, an embodiment of the present utility model provides a linear brake actuator, which is applied to a brake system of a vehicle to perform an active braking function. The electromagnetic type magnetic chuck device specifically comprises a shell 1 and a transmission gear 2 rotatably arranged on the shell 1, wherein an electromagnet 3 is embedded on the transmission gear 2, a transmission nut 4 with the end part extending out of the shell 1 is slidably arranged on the transmission gear 2, a transmission connecting part 5 is arranged at the end part extending out of the transmission nut 4, the transmission connecting part 5 is used for being connected to a braking part of a power system, a thrust rod 6 extending along the axis direction of the transmission rod 6 is arranged on the transmission nut 4, a magnetic chuck 7 is meshed on the transmission nut 4, a first friction plate 8 is arranged on the magnetic chuck 7, a second friction plate 9 corresponding to the first friction plate 8 is arranged on the transmission gear 2, a return spring 10 which is abutted between the shell 1 and the transmission nut 4 is sleeved on the thrust rod 6, the return spring 10 is used for dragging the return of the magnetic chuck 7, and after the magnetic attraction force of the electromagnet 3 disappears, the first friction plate 8 and the second friction plate 9 are actively separated.
Meanwhile, a speed reduction gear group 11 in transmission connection with the transmission gear 2 is installed in the shell 1, and a motor 12 connected with the speed reduction gear group 11 is installed on the shell 1.
When active braking is needed, power is transmitted to the transmission gear 2 through the motor 12 and the speed reduction gear group 11 to rotate, the magnetic chuck 7 moves towards the transmission gear 2 under the magnetic attraction effect of the electromagnet 3, the first friction plate 8 is contacted with the second friction plate 9 to enable the transmission nut 4 to synchronously rotate, and braking acting force is transmitted through the transmission connecting part 5 of the transmission nut 4 after the transmission nut 4 is connected with an external braking structure, so that braking force input is realized, such as reverse rotating speed and reverse acting force relative to a power system. And after the electromagnet 3 is powered off, the first friction plate 8 and the second friction plate 9 are separated by resetting under the acting force of the return spring 10.
Specifically, the reduction gear set 11 includes a first large gear 13 and a first small gear 14 that are coaxially fixed, the first small gear 14 is meshed with the transmission gear 2, a second small gear 15 is installed on an output shaft of the motor 12, the second small gear 15 is meshed with the first large gear 13, the first large gear 13 and the first small gear 14 are rotatably installed in the housing 1, and after power of the motor 12 is transmitted through the second small gear 15, the power is transmitted to the transmission gear 2 through the first large gear 13 and the second small gear 15, so that larger torque transmission is realized.
Specifically, the transmission connecting part 5 is of a tooth structure, and is connected with the external power part through the tooth structure, so that the transmission of braking acting force is ensured.
Meanwhile, the thrust rod 6 is provided with a thread structure which is tightly matched with the transmission nut 4, and the transmission nut 4 is fixedly connected with the thrust rod 6 through the thread structure.
Specifically, the end portion of the thrust rod 6 extending out of the transmission nut 4 is fixed with a U-shaped connecting block 16, a through connecting hole 17 is formed in the U-shaped connecting block 16, the external traction structure is connected through the U-shaped connecting block 16 and the connecting hole 17, and if the power is lost, the first friction plate 8 and the second friction plate 9 can be contacted by pulling the thrust rod 6.
Specifically, the casing 1 is provided with a sliding cylinder 18 extending outwards, the return spring 10 is disposed in the sliding cylinder 18, and the sliding cylinder 18 and the casing 1 are integrally formed, so as to place the return spring 10 and have a space for allowing the thrust rod 6 to slide.
The magnetic chuck 7 is made of magnetic material, such as neodymium iron boron.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The linear brake actuator is characterized by comprising a shell and a transmission gear rotatably arranged on the shell, wherein an electromagnet is embedded on the transmission gear;
The transmission gear is provided with a transmission nut with an end extending out of the shell in a sliding manner, and the end extending out of the transmission nut is provided with a transmission connecting part;
The transmission nut is provided with a thrust rod extending along the axial direction of the transmission nut, the transmission nut is meshed with a magnetic chuck, the magnetic chuck is provided with a first friction plate, and the transmission gear is provided with a second friction plate corresponding to the first friction plate;
The thrust rod is sleeved with a return spring which is abutted between the shell and the transmission nut;
The shell is internally provided with a speed reduction gear group in transmission connection with the transmission gear, and the shell is provided with a motor connected with the speed reduction gear group.
2. The linear brake actuator of claim 1 wherein the set of reduction teeth comprises a first large gear and a first small gear coaxially fixed, the first small gear meshed with the transmission gear, a second small gear mounted on an output shaft of the motor, the second small gear meshed with the first large gear;
the first large gear and the first small gear are rotatably arranged in the shell.
3. A linear brake actuator according to claim 2, wherein the drive connection is a tooth arrangement.
4. A linear brake actuator according to claim 3, wherein the thrust rod is provided with a threaded formation in a secure engagement with the drive nut.
5. The linear brake actuator of claim 4 wherein a U-shaped connecting block is fixed to an end of the thrust rod extending out of the drive nut, and wherein a through connecting hole is formed in the U-shaped connecting block.
6. A linear brake actuator according to any one of claims 1 to 5 wherein the housing is provided with an outwardly extending slide tube and the return spring is disposed within the slide tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421738272.7U CN222772562U (en) | 2024-07-22 | 2024-07-22 | Linear brake actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421738272.7U CN222772562U (en) | 2024-07-22 | 2024-07-22 | Linear brake actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222772562U true CN222772562U (en) | 2025-04-18 |
Family
ID=95344802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421738272.7U Active CN222772562U (en) | 2024-07-22 | 2024-07-22 | Linear brake actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222772562U (en) |
-
2024
- 2024-07-22 CN CN202421738272.7U patent/CN222772562U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |