CN110293945B - Electromagnetic brake and wheel driving system - Google Patents
Electromagnetic brake and wheel driving system Download PDFInfo
- Publication number
- CN110293945B CN110293945B CN201910722875.5A CN201910722875A CN110293945B CN 110293945 B CN110293945 B CN 110293945B CN 201910722875 A CN201910722875 A CN 201910722875A CN 110293945 B CN110293945 B CN 110293945B
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- Prior art keywords
- tooth sleeve
- movable
- armature
- fixed
- rotor
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- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 59
- 230000008859 change Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 6
- 238000005381 potential energy Methods 0.000 claims description 2
- 230000002146 bilateral effect Effects 0.000 claims 1
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
Abstract
The invention discloses an electromagnetic brake, which relates to the technical field of automobile parts and comprises a shell, a rotor, a movable armature, a spring, a fixed armature, a fixed tooth sleeve and a movable tooth sleeve, wherein the rotor, the movable armature, the spring and the fixed armature are arranged in the shell; the fixed tooth sleeve is fixedly connected to one end of the rotor; the movable tooth sleeve is arranged beside the fixed tooth sleeve in a left-right movable way, and a movable armature is fixedly arranged on one side of the movable tooth sleeve, which is away from the fixed tooth sleeve; the inner side wall of the shell is provided with a fixed armature opposite to the movable armature, a spring is arranged on the fixed armature, and an electromagnetic coil is arranged inside the fixed armature. According to the invention, the existing electromagnetic brake structure is optimally designed, the design thought of locking the motor output shaft is flexibly adopted, and the electromagnetic induction principle is applied to match with the fixed tooth sleeve and the movable tooth sleeve which can be mutually meshed, so that the parking brake function is realized, the brake performance of the electromagnetic brake is greatly improved, and the electromagnetic brake can be widely applied to the field of automobiles.
Description
Technical Field
The invention relates to the technical field of automobile parts, in particular to an electromagnetic brake and a wheel driving system.
Background
The wheel driving system has the advantages of no differential mechanism, small size, light weight, high efficiency, high integration level, good NVH performance and the like, is a core component of the wheel driving electric automobile, and is a research hot spot in the field of current new energy automobiles. The parking mechanism of the traditional wheel side driving system mostly locks the wheel end by the friction force of the friction plate to realize the parking function. The parking mode needs to be matched with a series of related components, is complex in structure, complex in operation and poor in reliability, and the friction plate is easy to wear.
The electromagnetic brake is an emerging brake and comprises a rotor, an armature, a coil, a spring and the like, wherein one end of the rotor is fixedly connected with a motor shaft, the side of the other end of the rotor is provided with the armature, the armature is connected with the coil through the spring, and the specific working mode is as follows: the coil is electrified, the armature is acted by electromagnetic force, the armature moves towards the coil direction against the spring force, the pressure applied by the rotor disappears, the brake is opened, and the motor can be started normally at the moment; the coil is powered off, the electromagnetic force disappears, the armature moves towards the rotor under the action of the spring force, positive pressure is generated on the rotor, friction is generated between the armature and the rotor, and therefore torque is generated to brake the motor.
The electromagnetic brake adopts an electromagnetic braking mode to replace a traditional pneumatic or hydraulic braking mode, and has simple control and actuating mechanisms, but the electromagnetic brake is braked by friction force as the traditional braking mode, so that the problems of part abrasion and braking performance reduction are caused. Moreover, when such an electromagnetic brake is applied to the automotive field, since the mass of an automobile is heavy, if it is desired to implement parking braking at a large gradient using such an electromagnetic brake, it is required that the spring force thereof and the electromagnetic force of the coil are sufficiently large. If only the spring and the coil are made large, the whole brake is relatively heavy in structure, and the lightweight design of the automobile is not facilitated. Therefore, the electromagnetic brake cannot be applied to the field of automobiles.
Therefore, the electromagnetic brake and the wheel driving system with the electromagnetic brake can be widely applied to the field of automobiles.
Disclosure of Invention
The invention provides an electromagnetic brake and a wheel driving system, and mainly aims to solve the problems that an existing electromagnetic brake cannot be applied to the field of automobiles, a parking mechanism of the existing wheel driving system is complex in structure, complex in operation, poor in reliability and easy to wear a friction plate.
The invention adopts the following technical scheme:
a wheel driving system comprises a shell, a rotor, a movable armature, a spring, a fixed armature, a fixed tooth sleeve and a movable tooth sleeve, wherein the rotor, the movable armature, the spring and the fixed armature are arranged in the shell; the fixed tooth sleeve is fixedly connected to one end of the rotor; the movable tooth sleeve is arranged beside the fixed tooth sleeve in a left-right movable way, and the movable armature is fixedly arranged on one side of the movable tooth sleeve, which is away from the fixed tooth sleeve; the inner side wall of the shell is provided with the fixed armature opposite to the movable armature, the spring is arranged on the fixed armature, and the electromagnetic coil is arranged inside the fixed armature.
Further, the upper and lower ends of the movable gear sleeve are slidably disposed on the housing by a sliding mechanism.
Further, the sliding mechanism comprises a sliding rail and a sliding block, the sliding rail is arranged at the upper end and the lower end of the shell, and the upper end and the lower end of the movable tooth sleeve are arranged on the sliding rail in a left-right sliding manner through the sliding block.
Further, the sliding mechanism comprises guide posts arranged at the upper end and the lower end of the shell, and through holes for inserting the guide posts are arranged at the upper end and the lower end of the movable tooth sleeve.
The wheel driving system comprises a motor, a transmission, a half shaft and a rim which are mutually symmetrical and are sequentially in power connection, and further comprises the electromagnetic brake, wherein the other end of a rotor of the electromagnetic brake is fixedly connected with a motor output shaft of the motor.
Further, the motor, the transmission and the electromagnetic brake are all fixedly arranged above the frame.
Further, the rotor and the motor shaft are connected in a key connection, a screw connection or a riveting way.
Further, the above-described transmission includes a reduction mechanism and/or a speed change mechanism.
Further, the speed reducing mechanism is a single-stage speed reducing mechanism or a multi-stage speed reducing mechanism.
Further, the speed change mechanism is a flat shaft type speed change mechanism or a rotary shaft type speed change mechanism.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the existing electromagnetic brake structure is optimally designed, the design thought of locking the motor output shaft is flexibly adopted, and the electromagnetic induction principle is applied to match with the fixed tooth sleeve and the movable tooth sleeve which can be mutually meshed, so that the parking brake function is realized, the brake performance of the electromagnetic brake is greatly improved, and the electromagnetic brake can be widely applied to the field of automobiles. Through using this electromagnetic braking ware can simplify the parking mechanism of wheel limit actuating system, promote parking performance reliability, effectively solved traditional parking mechanism structure complicacy, complex operation and have friction disc wearing and tearing problem.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
Specific embodiments of the present invention will be described below with reference to the accompanying drawings. Numerous details are set forth in the following description in order to provide a thorough understanding of the present invention, but it will be apparent to one skilled in the art that the present invention may be practiced without these details.
Referring to fig. 1, a wheel side driving system includes a motor 1, a transmission 2, a half shaft 3, and a rim 4 which are symmetrically and sequentially power-coupled to each other, and further includes an electromagnetic brake 5 fixedly connected to an output shaft of the motor.
Referring to fig. 1, in detail, the electromagnetic brake 5 includes a housing 51, a rotor 52, a movable armature 53, a spring 54, and a fixed armature 55 disposed inside the housing 51, and a fixed gear sleeve 56 and a movable gear sleeve 57 disposed inside the housing 51 and engaged with each other. One end of the rotor 52 is fixedly connected with a fixed tooth sleeve 56, and the other end is fixedly connected with an output shaft of the motor; the movable tooth sleeve 57 is arranged beside the fixed tooth sleeve 56 in a left-right movable way, and the movable tooth sleeve 57 is fixedly provided with a movable armature 53 at one side away from the fixed tooth sleeve 56; the inner wall of the housing 51 is provided with a fixed armature 55 opposite the movable armature 53, and a spring 54 is provided, and an electromagnetic coil is provided inside the fixed armature 55. Preferably, one end of the spring 54 is fixedly arranged on the movable tooth sleeve 57, and the other end is fixedly arranged on the inner side wall of the shell 51.
Referring to fig. 1, the braking principle of the electromagnetic brake 5 is: when the parking is canceled, the electromagnetic coil is electrified to generate attractive force, so that the movable armature 53 and the fixed armature 55 are attracted, the movable armature 53 drives the movable tooth sleeve 57 to overcome the elastic force of the spring 54 and move towards the fixed armature 55, at the moment, the movable tooth sleeve 57 is separated from the fixed tooth sleeve 56, the resistance applied by the rotor 52 disappears, the motor can normally rotate along with the output shaft of the motor, and the motor can normally start; when the parking is completed, the electromagnetic coil is powered off, electromagnetic induction is eliminated, electromagnetic force between the movable armature 53 and the fixed armature 55 is eliminated, the spring 54 releases elastic potential energy, the movable tooth sleeve 57 is pushed towards the fixed tooth sleeve 56, the movable tooth sleeve 57 is meshed with the fixed tooth sleeve 56, and the rotor 52 and the motor output shaft are locked due to the fact that the movable tooth sleeve 57 is not rotatable, so that the parking function is achieved. Therefore, the invention can realize the parking braking function by optimally designing the structure of the existing electromagnetic brake 5 and flexibly adopting the design thought of locking the output shaft of the motor and applying the electromagnetic induction principle to match the fixed tooth sleeve 56 and the movable tooth sleeve 57 which can be mutually engaged, thereby greatly improving the braking performance of the electromagnetic brake 5 and leading the electromagnetic brake 5 to be widely applied to the field of automobiles. Through using this electromagnetic braking ware 5 can simplify the parking mechanism of wheel limit actuating system, promote parking performance reliability, effectively solved traditional parking mechanism structure complicacy, complex operation and have friction disc wearing and tearing problem.
Referring to fig. 1, specifically, the movable socket 57 is provided to the housing 51 so as to be movable left and right by a slide mechanism. As a preferable scheme: the sliding mechanism includes a slide rail 581 and a slide block 582, and the upper and lower ends of the housing 51 are provided with a slide rail 581, and the movable gear sleeve 57 is slidably disposed on the slide rail 581 through the slide block 582. By providing the sliding mechanism, on the one hand, the movable tooth sleeve 57 can only move left and right (along the axial direction of the rotor 52) and cannot rotate, so that the functions of locking the rotor 52 and the motor output shaft are realized, and on the other hand, the friction force between the movable tooth sleeve 57 and the shell 51 can be effectively reduced, the movable tooth sleeve 57 can be ensured to move smoothly, the braking performance of the electromagnetic brake 5 cannot be influenced, and the abrasion of parts is effectively reduced. The structure of the sliding mechanism is not limited to this, and may be any one-dimensional sliding mechanism capable of sliding the movable sleeve 57 in the axial direction, for example: the sliding mechanism 58 may also be guide posts provided at the upper and lower ends of the housing 51, and the movable gear sleeve 57 is provided with through holes for penetrating the guide posts.
Referring to fig. 1, specifically, a transmission 2 includes a reduction mechanism and a shift mechanism. The speed reducing mechanism can be a single-stage speed reducing mechanism or a multi-stage speed reducing mechanism, and the speed changing mechanism can be a flat shaft type speed changing mechanism or a rotary shaft type speed changing mechanism. As a preferable scheme: the speed reducing mechanism is a multi-stage speed reducing mechanism and specifically comprises a primary speed reducing mechanism 21 and a secondary speed reducing mechanism 22; the speed change mechanism is a flat shaft type speed change mechanism, and comprises a two-gear speed change mechanism, specifically comprises a first shaft 23, a middle shaft 24, a second shaft 25 and a synchronizer 26, and can realize the two-gear speed change function by pushing the synchronizer 26 to move left and right through a gear change mechanism of a passenger car. The specific structure and the specific operation of the reduction mechanism and the gear shifting mechanism can be understood and implemented by those skilled in the art based on the prior art and the above description, and thus are not repeated herein. The speed reduction mechanism and the speed change mechanism are not limited to this, and may be other structures, for example, a speed change mechanism may be a rotation shaft type speed change mechanism such as a planetary gear mechanism.
Referring to fig. 1, the specific assembly mode of the wheel side driving system is as follows: one end of the motor output shaft is connected with a rotor 52 of the electromagnetic brake 5, and the other end is connected with the input end of the transmission 2; one end of the half shaft 3 is connected with the output end of the speed changer 2, and the other end is connected with the rim 4 through the ball cage 31.
Referring to fig. 1, as a preferred embodiment: the electromagnetic brake 5, the motor 1 and the transmission 2 are all fixed above the frame, so that the electromagnetic brake 5, the motor 1 and the transmission 2 all belong to the sprung mass. Therefore, the invention adopts a distributed optimization design, arranges the driving component based on unsprung on the spring, greatly optimizes unsprung mass, and is beneficial to improving the stability, comfort and dynamic performance of the whole vehicle.
Referring to fig. 1, as a preferred embodiment: the rotor 52 is connected to the motor output shaft by a key, screw or rivet.
The foregoing is merely illustrative of specific embodiments of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modification of the present invention by using the design concept shall fall within the scope of the present invention.
Claims (7)
1. The utility model provides an electromagnetic braking ware, includes casing and sets up in inside rotor, movable armature, spring and the fixed armature of casing, its characterized in that: the fixed tooth sleeve and the movable tooth sleeve are arranged in the shell and can be meshed with each other; the fixed tooth sleeve is fixedly connected to one end of the rotor; the movable tooth sleeve is arranged beside the fixed tooth sleeve in a left-right movable way, and the movable armature is fixedly arranged on one side of the movable tooth sleeve, which is away from the fixed tooth sleeve; the inner side wall of the shell is provided with the fixed armature opposite to the movable armature, the fixed armature is provided with the spring, and an electromagnetic coil is arranged inside the fixed armature; the upper end and the lower end of the movable tooth sleeve are arranged on the shell in a left-right sliding way through a sliding mechanism; the sliding mechanism comprises a sliding rail and a sliding block, the upper end and the lower end of the shell are respectively provided with the sliding rail, and the upper end and the lower end of the movable tooth sleeve are arranged on the sliding rail in a left-right sliding manner through the sliding block; or the sliding mechanism comprises guide posts arranged at the upper end and the lower end of the shell, and through holes for inserting the guide posts are arranged at the upper end and the lower end of the movable tooth sleeve;
the braking principle of the electromagnetic brake is as follows: when the parking is canceled, the electromagnetic coil is electrified to generate attractive force, so that the movable armature and the fixed armature are attracted, the movable armature drives the movable tooth sleeve to overcome the elastic force of the spring and move towards the fixed armature, at the moment, the movable tooth sleeve is separated from the fixed tooth sleeve, the resistance born by the rotor disappears, the motor can normally rotate along with the output shaft of the motor, and the motor can normally start; after parking, the electromagnetic coil is powered off, electromagnetic induction disappears, electromagnetic force between the movable armature and the fixed armature disappears, the spring releases elastic potential energy to push the movable tooth sleeve towards the fixed tooth sleeve, so that the movable tooth sleeve is meshed with the fixed tooth sleeve, and the rotor and the motor output shaft are locked due to the fact that the movable tooth sleeve is not rotatable, and therefore the parking function is achieved.
2. The utility model provides a wheel limit actuating system, includes motor, derailleur, semi-axis and rim that bilateral symmetry just power hookup in proper order each other, its characterized in that: the electromagnetic brake according to claim 1, wherein the other end of the rotor of the electromagnetic brake is fixedly connected to the motor output shaft of the motor.
3. A wheel side drive system as claimed in claim 2, wherein: the motor, the speed changer and the electromagnetic brake are all fixedly arranged above the frame.
4. A wheel side drive system as claimed in claim 2, wherein: the rotor and the motor output shaft are connected in a key connection, screw connection or riveting mode.
5. A wheel side drive system as claimed in claim 2, wherein: the transmission includes a reduction mechanism and/or a gear change mechanism.
6. A wheel rim drive system as set forth in claim 5 wherein: the speed reducing mechanism is a single-stage speed reducing mechanism or a multi-stage speed reducing mechanism.
7. A wheel rim drive system as set forth in claim 5 wherein: the speed change mechanism is a flat shaft type speed change mechanism or a rotary shaft type speed change mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722875.5A CN110293945B (en) | 2019-08-06 | 2019-08-06 | Electromagnetic brake and wheel driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722875.5A CN110293945B (en) | 2019-08-06 | 2019-08-06 | Electromagnetic brake and wheel driving system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110293945A CN110293945A (en) | 2019-10-01 |
| CN110293945B true CN110293945B (en) | 2024-04-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910722875.5A Active CN110293945B (en) | 2019-08-06 | 2019-08-06 | Electromagnetic brake and wheel driving system |
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| Country | Link |
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| CN (1) | CN110293945B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114200393A (en) * | 2022-02-18 | 2022-03-18 | 湖南警察学院 | Radio positioning device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10029864A1 (en) * | 2000-06-16 | 2002-01-10 | Zahnradfabrik Friedrichshafen | Drive with electric motor has electromagnet with armature plate on side of planetary gear that actuates brake, whose disc has frictional surface facing armature and is coupled to motor shaft |
| CN2874126Y (en) * | 2005-12-22 | 2007-02-28 | 常熟市美益电磁控制元件有限公司 | Electromagnetic braker of improved structure |
| CN105465244A (en) * | 2016-01-13 | 2016-04-06 | 安徽立信电磁离合器有限公司 | Electromagnetic power-off brake allowing gap between friction surfaces to be adjusted at will |
| CN108263191A (en) * | 2016-12-30 | 2018-07-10 | 比亚迪股份有限公司 | Power drive system and with its vehicle |
| CN109187043A (en) * | 2018-08-10 | 2019-01-11 | 哈尔滨理工大学 | High speed electric automobile dynamic system simulator and analogy method |
| CN210337883U (en) * | 2019-08-06 | 2020-04-17 | 厦门金龙联合汽车工业有限公司 | Electromagnetic brake and wheel driving system |
-
2019
- 2019-08-06 CN CN201910722875.5A patent/CN110293945B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10029864A1 (en) * | 2000-06-16 | 2002-01-10 | Zahnradfabrik Friedrichshafen | Drive with electric motor has electromagnet with armature plate on side of planetary gear that actuates brake, whose disc has frictional surface facing armature and is coupled to motor shaft |
| CN2874126Y (en) * | 2005-12-22 | 2007-02-28 | 常熟市美益电磁控制元件有限公司 | Electromagnetic braker of improved structure |
| CN105465244A (en) * | 2016-01-13 | 2016-04-06 | 安徽立信电磁离合器有限公司 | Electromagnetic power-off brake allowing gap between friction surfaces to be adjusted at will |
| CN108263191A (en) * | 2016-12-30 | 2018-07-10 | 比亚迪股份有限公司 | Power drive system and with its vehicle |
| CN109187043A (en) * | 2018-08-10 | 2019-01-11 | 哈尔滨理工大学 | High speed electric automobile dynamic system simulator and analogy method |
| CN210337883U (en) * | 2019-08-06 | 2020-04-17 | 厦门金龙联合汽车工业有限公司 | Electromagnetic brake and wheel driving system |
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| CN110293945A (en) | 2019-10-01 |
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