CN217486280U

CN217486280U - Brushless direct current motor for automobile ABS system

Info

Publication number: CN217486280U
Application number: CN202220856212.XU
Authority: CN
Inventors: 汪浩; 李云福; 张佳凤; 杨菁; 熊顺宝
Original assignee: Wuhan Yifeng Electric Technology Co ltd
Current assignee: Wuhan Fengyue Electric Technology Co ltd
Priority date: 2022-04-12
Filing date: 2022-04-12
Publication date: 2022-09-23
Anticipated expiration: 2032-04-12

Abstract

The utility model relates to a brushless DC motor for an automobile ABS system, which comprises a motor shell, a sealing structure, a stator assembly, a rotor assembly and a water-proof shell, wherein the motor shell comprises a shell and a pump body connected with the opening of the shell, the sealing structure is arranged at the position where the surface of the shell is connected with the pump body and seals the gap at the joint of the shell and the pump body, the sealing structure comprises a leakage-proof part which can separate and absorb water stains leaking into the gap between the shell and the pump body by the leakage-proof part, the stator assembly is arranged in the shell and the rotor assembly is also arranged in the shell and can be matched with the stator assembly to drive the pump head in the pump body to rotate, the utility model discloses a water-proof shell in the sealing structure, when other parts in the sealing structure can not separate the water stains from permeating into the shell, an opening arranged on the surface of the water-proof shell can provide another outlet for the water stains permeating into the gap between the shell and the pump body, and a route of water stains advancing firstly passes through the water-proof shell, absorb water stains in advance and play a role in blocking water seepage under special conditions.

Description

Brushless direct current motor for automobile ABS system

Technical Field

The utility model relates to a car ABS technical field of system, concretely relates to car ABS is brushless DC motor for system.

Background

ABS anti-lock braking system is essential important component part in modern automobile, can be when the vehicle that traveles carries out emergency brake, the phenomenon of tire locking is prevented appearing, guarantee driver's personal safety, and because ABS system frequency of use is lower, brushless motor most also has non-maintaining function, the vehicle is inevitable to be gone out and is gone over the puddle or stops at comparatively moist district simultaneously in the rainy day, brushless motor in the ABS regulating pump is out of work for a long time and is in humid environment, certain ageing corrosion appears easily in its shell, waterproof ability has certain decline, for the waterproof ability that promotes the motor, people can set up waterproof construction between the casing and the pump body, guarantee the holistic waterproof performance of motor.

The waterproof structure of the brushless motor in the existing ABS system is a rubber ring and a waterproof coating which are arranged between a shell and a pump body, but when the motor shell is corroded seriously and the rubber ring is aged, the waterproof performance of the waterproof structure is also reduced to a certain extent, and a safety structure is lacked to treat the water seepage under the special condition.

SUMMERY OF THE UTILITY MODEL

Based on the above, the utility model provides a car ABS is brushless DC motor for system to solve the seal structure that current part brushless DC motor used when the corrosion is serious, the condition of infiltration also can appear, lack the prevention structure of handling such unexpected condition.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

brushless DC motor for automobile ABS system includes:

the motor shell comprises a shell and a pump body connected with an opening of the shell;

the sealing structure is arranged at the position where the surface of the shell is connected with the pump body, and is used for sealing a gap at the joint of the shell and the pump body, and the sealing structure comprises a leakage-proof part which can be used for blocking and absorbing water stains leaked into the gap between the shell and the pump body;

a stator assembly disposed inside the housing;

the rotor assembly is also arranged in the shell and can be matched with the stator assembly to drive the pump head in the pump body to rotate.

When the condition of corrosion appeared and lead to appearing the gap increase and infiltration water stain, the water stain in infiltration gap can deepen gradually under the effect that capillary action and vehicle whole rocked, and then contacted the second of constituteing by leak protection portion and say the defence line, and water stain can absorb via leak protection portion, no longer continues to advance in the gap to play certain insurance effect, avoid unexpected appearance.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Further, seal structure includes that the casing opening part establishes keeps apart the arch, and casing opening and keep apart protruding adjacent position department and be equipped with the isolation recess, should keep apart the inside of recess and be equipped with sealed rubber ring, should seal rubber ring and the surface of the pump body and contact, and the surface of the pump body be equipped with keep apart the bayonet socket of recess and isolation protruding looks adaptation, through the sealed rubber ring who establishes, can improve the protective capacities to water stain.

Further, leak protection portion is including establishing the water proof shell on keeping apart the arch, and the whole thickness of water proof shell is the same with the protruding whole thickness of isolation, and the surface of this water proof shell is equipped with lets its inside opening of water infiltration, through the water proof shell of establishing, can absorb the water stain of unexpected infiltration to prolong the guard period when the infiltration.

Further, the inside of water proof shell is equipped with the moisture absorption bag, and the inside packing of this moisture absorption bag has the material of absorbing water and meets water and be the solvent that discolours promptly, and the water proof shell comprises two half shell butt joints, and the surface of casing is equipped with the socket that packs into in order to supply the water proof shell, through the solvent and the material of absorbing water of changing colour who establishes for when can absorb water, also can make things convenient for the maintainer to judge whether the bag of absorbing water absorbs steam to subsequent change is convenient for.

Furthermore, the border department of casing is equipped with sealed shell, and this sealed shell can be sealed with the gap that casing and pump body junction produced, and the surface of casing is equipped with the arch spacing sealed shell, through the sealed shell of establishing, can carry out preliminary waterproof to the surface of casing, prolongs its seal structure's life.

Furthermore, keep apart protruding surface of keeping away from sealing rubber ring and also be equipped with sealing rubber ring, and the surface of the pump body is equipped with and holds this sealing rubber ring notch, through another sealing rubber ring that establishes, cooperation humidity transducer can carry out the third protection to gap department, when guaranteeing the accurate response humidity condition, also can guarantee its waterproof performance.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

1. the utility model discloses a water proof shell in the seal structure established for in the unexpected condition of appearing, its casing and the unable separation water stain infiltration of the pump body when inside to the casing, the opening that water proof shell surface was established can be for the water stain of infiltration casing and pump body gap department provides another export, prolongs the route of advancing that water stains, and lets the route that water stains advancing at first through the inside of water proof shell, absorbs water stain in advance, plays the separation effect to the infiltration under the special cases.

2. The utility model discloses a two halves water proof shell and the moisture absorption bag established, when having water stain infiltration to water proof shell in, can absorb water stain under the effect of the inside drier of moisture absorption bag to avoid appearing the water stain condition of collecting together in the water proof shell, simultaneously, in follow-up maintenance in-process, can take out the water proof shell and open the back, change the moisture absorption bag, thereby guarantee repetitious cyclic use.

Drawings

Fig. 1 is a schematic view of a front cross-sectional structure of a brushless dc motor for an ABS system of an automobile according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of the area a in fig. 1.

In the drawings, the reference numbers indicate the following list of parts:

1. a motor housing; 11. a housing; 12. a pump body; 2. a sealing structure; 21. a leakage prevention part; 211. a waterproof shell; 212. moisture absorption bags; 22. sealing the rubber ring; 23. a humidity sensor; 24. sealing the shell; 3. a stator assembly; 4. a rotor assembly.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that spatial relationship terms, such as "under", "below", "beneath", "below", "over", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary terms "under" and "under" can encompass both an orientation of above and below. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. The "connection" in the following embodiments is understood as "electrical connection", "communication connection", or the like if the connected circuits, modules, units, or the like have electrical signals or data transmission therebetween.

As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

Referring to fig. 1 and 2, a brushless dc motor for an ABS system of an automobile includes:

the motor casing 1 comprises a shell 11 and a pump body 12 connected with an opening of the shell 11.

The sealing structure 2 is arranged at the position where the surface of the shell 11 is connected with the pump body 12, the gap at the joint of the shell 11 and the pump body 12 is sealed, the sealing structure 2 comprises a leakage-proof part 21, and water stains leaked into the gap between the shell 11 and the pump body 12 can be separated and absorbed by the leakage-proof part 21.

And a stator assembly 3 provided inside the housing 11.

The rotor assembly 4, which is also disposed inside the housing 11, can cooperate with the stator assembly 3 to drive the pump head in the pump body 12 to rotate.

The joint between the casing 11 and the pump body 12 is provided with a fold with a cross section similar to a Z-shaped structure, the advancing path of water stain permeating into the casing 11 can be prolonged while the sealing is tighter, the leakage-proof part 21 in the sealing structure 2 is located at the middle and rear sections of the path, the number of the leakage-proof parts 21 can be a plurality of or one, when the water stain is permeated due to the increase of the gap caused by the corrosion of the motor casing 1 in the first layer protection composed of the pump body 12 and the casing 11, the water stain permeating into the gap can be gradually deepened under the action of the integral shaking of the capillary action and the vehicle, and then the water stain contacts with the second line of the leakage-proof part 21, can be absorbed by the leakage-proof part 21, the water stain does not continue to advance in the gap, a certain safety effect is achieved, and accidents are avoided.

Referring to fig. 2, the sealing structure 2 of the present embodiment includes an isolation protrusion disposed at an opening of the casing 11, an isolation groove is disposed at a position adjacent to the isolation protrusion of the casing 11, a sealing rubber ring 22 is disposed inside the isolation groove, the sealing rubber ring 22 contacts with a surface of the pump body 12, a bayonet matched with the isolation groove and the isolation protrusion is disposed on the surface of the pump body 12, the isolation protrusion is matched with the isolation groove to increase a contact area between the casing 11 and the pump body 12, and the sealing rubber ring 22 disposed at the isolation groove can be elastically matched with the pump body 12 to squeeze the sealing rubber ring to seal a corner of a gap between the pump body 12 and the casing 11, so that even when the sealing rubber ring 22 ages and gradually loses elasticity, the sealing rubber ring can be tightly contacted with the pump body 12 under pressure of the pump body 12 to ensure a sealing effect of the sealing rubber ring.

Referring to fig. 2, the leakage prevention portion 21 of the present embodiment includes a water-stop shell 211 disposed on the isolation protrusion, and the whole thickness of the water-stop shell 211 is the same as that of the isolation protrusion, an opening for water to permeate into the water-stop shell 211 is disposed on the surface of the water-stop shell 211, and the shape of the opening disposed on the surface of the water-stop shell 211 is preferably circular, so as to enhance the whole firmness of the water-stop shell 211, and meanwhile, the same thickness as that of the isolation protrusion can also play the same role of waterproof isolation as that of the isolation protrusion, thereby improving the water-stop performance, the water-stop shell 211 can be mounted on the surface of the housing 11 by bolts, so that the water-stop shell 211 is integrally and more firmly connected with the housing 11, and ensuring the sealing effect.

Referring to fig. 2, a moisture absorption bag 212 is disposed inside the waterproof case 211 of this embodiment, a water absorption material and a water-contact, i.e., color-changing solvent are filled inside the moisture absorption bag 212, the waterproof case 211 is formed by two half-cases in a butt joint manner, and a socket for the waterproof case 211 to be inserted is disposed on the surface of the case 11, preferably, the water absorption material in the moisture absorption bag 212 is water-absorbing silica gel particles, the water-contact, i.e., color-changing solvent is anhydrous copper sulfate powder, and after the moisture absorption bag 212 absorbs water vapor, the color of the copper sulfate powder can be displayed in time, so as to prompt the maintainer that water is present inside the moisture absorption bag 212, and the moisture absorption bag 212 with water stains can be conveniently judged and replaced.

Please refer to fig. 2, the surface that the pump body 12 of this embodiment is close to water proof shell 211 is equipped with humidity transducer 23, the one end that water proof shell 211 is close to pump body 12 is equipped with the recess that holds humidity transducer 23, humidity transducer 23 passes through the electric wire and is connected with the master control platform, when the infiltration condition appears, if water proof shell 211 also can't block the entering of steam, humidity transducer 23 can gather the humidity signal in the current gap, thereby remind the navigating mate on the master control platform, the inside infiltration condition of motor is comparatively serious, make things convenient for the navigating mate to drive the vehicle and in time go to the maintenance shop and overhaul.

Referring to fig. 2, the edge of the housing 11 of the embodiment is provided with the sealing shell 24, the sealing shell 24 can seal a gap generated at a connection position between the housing 11 and the pump body 12, and the surface of the housing 11 is provided with a protrusion for limiting the sealing shell 24, preferably, the number of the sealing shells 24 is one, the inner diameter of the sealing shell 24 away from the pump body 12 is gradually increased, the sealing shell 24 is mounted on the surface of the housing 11 through a bolt, so that the sealing shell 24 is integrally and firmly mounted on the housing 11, the gap can be preliminarily sealed outside the pump body 12 and the housing 11, and the sealing effect is improved.

Referring to fig. 2, the surface of the isolation protrusion far away from the sealing rubber ring 22 is also provided with the sealing rubber ring 22, and the surface of the pump body 12 is provided with a notch for accommodating the sealing rubber ring 22, and the gap can be protected by another sealing rubber ring 22 in cooperation with the humidity sensor 23, so that the waterproof performance can be ensured while the humidity is accurately sensed.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. Brushless DC motor is used to car ABS system, its characterized in that includes:

the motor comprises a motor shell (1) and a motor cover, wherein the motor shell comprises a shell (11) and a pump body (12) which is connected with an opening of the shell (11);

the sealing structure (2) is arranged at the position where the surface of the shell (11) is connected with the pump body (12) and used for sealing a gap at the joint of the shell (11) and the pump body (12), the sealing structure (2) comprises a leakage-proof part (21), and water stains leaked from the gap between the shell (11) and the pump body (12) can be blocked and absorbed by the leakage-proof part (21);

a stator assembly (3) provided inside the housing (11);

and the rotor component (4) is also arranged in the shell (11) and can be matched with the stator component (3) to drive a pump head in the pump body (12) to rotate.

2. The brushless direct current motor for the ABS system of the automobile according to claim 1, wherein the sealing structure (2) comprises an isolation protrusion disposed at the opening of the housing (11), and an isolation groove is disposed at a position adjacent to the isolation protrusion at the opening of the housing (11), and a sealing rubber ring (22) is disposed inside the isolation groove, and the sealing rubber ring (22) contacts with the surface of the pump body (12).

3. The brushless DC motor for an ABS system of a vehicle according to claim 1, wherein the leakage preventing portion (21) comprises a water-stop shell (211) formed on the isolation protrusion, and the water-stop shell (211) has the same thickness as the isolation protrusion, and the surface of the water-stop shell (211) is provided with an opening for water to permeate into the interior thereof.

4. The brushless DC motor for the ABS system of claim 3, wherein the water-proof housing (211) is provided with a moisture absorption bag (212) inside, and the moisture absorption bag (212) is filled with a water-absorbing material and a solvent that changes color when it is in contact with water.

5. The brushless DC motor for the ABS system of a motor vehicle according to claim 3, characterized in that the water-proof housing (211) is composed of two half-shells which are butted together, and the surface of the housing (11) is provided with a socket for the water-proof housing (211) to be installed.

6. The brushless direct current motor for the ABS system of the automobile according to claim 1, wherein the surface of the pump body (12) close to the waterproof housing (211) is provided with a humidity sensor (23), and one end of the waterproof housing (211) close to the pump body (12) is provided with a groove for accommodating the humidity sensor (23).

7. The brushless DC motor for the ABS system of the automobile according to claim 1, wherein the edge of the housing (11) is provided with a sealing shell (24), the sealing shell (24) can seal the gap generated at the joint of the housing (11) and the pump body (12), and the surface of the housing (11) is provided with a protrusion for limiting the sealing shell (24).

8. The brushless DC motor for an ABS system of a motor vehicle according to claim 2, characterized in that the surface of the isolating protrusion far away from the rubber seal (22) is also provided with a rubber seal (22), and the surface of the pump body (12) is provided with a notch for accommodating the rubber seal (22).