CN211880202U - Brushless direct current motor base for automobile electronic fan - Google Patents

Abstract

The utility model discloses a brushless DC motor base for automotive electronics fan, including the bottom plate, the centre position of the first face of bottom plate is equipped with concentric cylinder, and the epaxial motor shaft that has cast of concentric cylinder, its both sides respectively cast a boss that highly equals, and two bosses have the effect with the iron core location along the perpendicular central line symmetric distribution of cylinder. Still be equipped with a plurality of first cylinders on the bottom plate, first screw hole has been seted up at first cylindrical center for the iron core is fixed with the base. The second face of bottom plate has the circular cavity of an holding control circuit board, and cavity bottom distributes has a plurality of second cylinders, and the second screw hole has been seted up at the center of second cylinder for fix the circuit board on the bottom plate. The base is integrated with a collector shaft and a bottom plate, wherein the bottom plate is formed by casting aluminum alloy in a die-casting mode and is used for placing a control circuit board of a motor, and the motor is assisted by cooling fins distributed on the outer peripheral wall of the bottom plate to ventilate and dissipate heat.

Description

Brushless direct current motor base for automobile electronic fan

Technical Field

The utility model relates to a motor manufacturing field, more specifically relates to an automotive electronics is brushless DC motor base for fan.

Background

The electronic fan for engine heat radiation is an important part in the heat radiation system of automobile engine, and it uses a brush DC motor to drive fan blades to radiate heat from the water tank connected with the engine. Because the engine runs continuously, the electronic fan also runs continuously, and the carbon brush and the commutator in the motor are abraded, thereby greatly influencing the service life of the motor. In order to prolong the service life of the motor, a brushless direct current motor with an outer rotor is provided to replace the existing brush direct current motor. However, the base of the brushless dc motor is formed by stamping and drawing a steel plate, and has a single function, and only can play a role in supporting the motor.

In summary, no effective solution has been proposed to solve the problems of the brushless dc motor base in the related art.

SUMMERY OF THE UTILITY MODEL

Based on this, the application provides a brushless DC motor base for automotive electronics fan for solve among the correlation technique brushless DC motor base function relatively single, only can play the problem of supporting the motor effect.

The application provides a brushless DC motor base for an electronic fan of an automobile, which comprises a bottom plate,

a concentric cylinder is arranged in the center of the first surface of the bottom plate, a motor shaft is cast on a shaft of the concentric cylinder, bosses with equal height are respectively cast on two sides of the concentric cylinder, a plurality of first cylinders are further arranged on the bottom plate, and first screw holes are formed in the centers of the first cylinders;

the second face of bottom plate has the circular cavity of a holding control circuit board, and the exhaust hole has been seted up to cavity edge, and cavity bottom distribution has a plurality of second cylinders, and the second screw hole has been seted up at the cylindrical center of second.

In a possible implementation manner, the bottom plate is provided with a plurality of through holes, and the through holes penetrate through the first surface and the second surface of the bottom plate and are symmetrically distributed along the perpendicular bisector of the pair of bosses.

In a possible implementation manner, a plurality of fixing lugs with the same thickness are distributed on the outer edge of the bottom plate, and third screw holes are formed in the fixing lugs.

In a possible implementation manner, the fixing support lug comprises a first support lug and a second support lug, the first support lug and the second support lug are distributed on the peripheral wall of the bottom plate in a staggered manner, and a third screw hole arranged on the first support lug is a stepped hole.

In one possible implementation, the peripheral wall of the bottom plate is further provided with a plurality of cooling fins, which are equal in size and spaced apart from each other in the circumferential direction of the bottom plate.

In a possible implementation manner, a groove is formed on the outer peripheral side of the motor shaft, and the groove is formed at one end, close to the bottom plate, of the motor shaft.

Compared with the prior art, the utility model has the following characteristics and beneficial effect:

1. the base not only has the function of supporting the motor, but also can better place the control circuit board and has the function of radiating the motor.

2. The base integrates the motor shaft and the bottom plate, wherein the bottom plate is formed by casting aluminum alloy in a die-casting mode, the structure is simple, the production is easy, and the installation is very convenient.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a first aspect of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic structural view of a second surface of the present invention;

FIG. 4 is a schematic view of a motor shaft;

the reference numbers in the figures illustrate:

the structure comprises a base plate 1, a concentric cylinder 2, a motor shaft 3, a boss 4, a first cylinder 5, a first screw hole 6, a cavity 7, an exhaust hole 8, a second cylinder 9, a second screw hole 10, a first lug 11, a second lug 12, a radiating fin 13 and a groove 14.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other examples, which can be obtained by a person skilled in the art without making any inventive step based on the examples in this application, are within the scope of protection of this application.

It is obvious that the drawings in the following description are only examples or embodiments of the application, from which the application can also be applied to other similar scenarios without inventive effort for a person skilled in the art. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Unless otherwise defined, technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of the terms "a" and "an" and "the" and similar referents in the context of describing and claiming the application are not to be construed as limiting in any way, but rather as indicating the singular or plural. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalent, and does not exclude other elements or items. "connected" or "coupled" and similar terms are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in the specification and claims of this application, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Example (b): as shown in fig. 1-3, in order to solve the above problem, an embodiment of the present invention provides a brushless dc motor base for an automotive electronic fan, including a bottom plate 1, a concentric cylinder 2 is disposed at a central position of a first surface of the bottom plate 1, the concentric cylinder 2 is formed by overlapping a larger cylinder and a smaller cylinder, a motor shaft 3 is cast on a shaft of the concentric cylinder 2, two bosses 4 with equal height are respectively cast on two sides of the concentric cylinder, and the two bosses 4 are symmetrically distributed along a vertical center line of the cylinder, so as to have an effect of positioning an iron core. Still be equipped with a plurality of first cylinders 5 on the bottom plate 1, first screw hole 6 has been seted up at the center of first cylinder 5 for the iron core is fixed with the base.

The second face of bottom plate 1 has a circular cavity 7 of holding control circuit board, and cavity 7 edge has seted up exhaust hole 8, prevents that cavity 7 from sealing the back, and inside gas causes the damage to electronic component because expend with heat and contract with cold. A plurality of second cylinders 9 are distributed at the bottom of the cavity 7, and second screw holes 10 are formed in the centers of the second cylinders 9 and used for fixing the circuit board on the bottom plate 1.

In a possible implementation manner, as shown in fig. 1 and fig. 3, a plurality of through holes are formed in the base plate 1, the through holes penetrate through the first surface and the second surface of the base plate 1 and are symmetrically distributed along the perpendicular bisector of the pair of bosses 4, and the through holes are used for placing connection copper sheets of the winding and the control circuit board.

Further, a plurality of fixing lugs with the same thickness are distributed on the outer edge of the bottom plate 1, wherein each fixing lug comprises a first lug 11 and a second lug 12, the first lugs 11 and the second lugs 12 are distributed on the outer peripheral wall of the bottom plate 1 in a staggered mode, and the motor and the frame are connected and fixed on the first lugs 11 through screw holes. The second lugs 12 each have a screw hole for fixing the controller cover plate.

In addition, in order to assist the motor in ventilation and heat dissipation, a plurality of heat dissipation fins 13 are further provided on the outer peripheral wall of the base plate 1, and the plurality of heat dissipation fins 13 are equal in size and spaced from each other in the circumferential direction of the base plate 1.

In the embodiment, a groove 14 is formed on the outer peripheral side of the motor shaft 3, and the groove 14 is formed at one end of the motor shaft 3 close to the base plate 1 to prevent the motor shaft 3 from loosening and falling off after being cast into a base.

In summary, when the brushless dc motor base for the automotive electronic fan is used, the base is firstly installed at a designated area, the base collector shaft 3 and the base plate 1 are integrated, wherein the base plate 1 is formed by casting aluminum alloy in a die-casting mode and used for placing a control circuit board of the motor, and the heat radiating fins 13 distributed on the outer peripheral wall of the base plate 1 are used for assisting the motor in ventilation and heat radiation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (6)

1. A brushless DC motor base for an automobile electronic fan is characterized by comprising a bottom plate (1),

a concentric cylinder (2) is arranged in the center of a first surface of a bottom plate (1), a motor shaft (3) is cast on a shaft of the concentric cylinder (2), bosses (4) with equal height are respectively cast on two sides of the concentric cylinder (2), a plurality of first cylinders (5) are further arranged on the bottom plate (1), and first screw holes (6) are formed in the centers of the first cylinders (5);

the second face of bottom plate (1) has a circular cavity (7) of holding control circuit board, and exhaust hole (8) have been seted up to cavity (7) edge, and cavity (7) bottom distribution has a plurality of second cylinders (9), and second screw hole (10) have been seted up at the center of second cylinder (9).

2. The brushless direct current motor base for the automotive electronic fan as claimed in claim 1, wherein the base plate (1) is provided with a plurality of through holes, the through holes penetrate through the first surface and the second surface of the base plate (1) and are symmetrically distributed along the perpendicular bisector of the pair of bosses (4).

3. The brushless direct current motor base for the automotive electronic fan as claimed in claim 1, wherein a plurality of fixing lugs with the same thickness are distributed on the outer edge of the bottom plate (1), and third screw holes are formed in the fixing lugs.

4. The brushless direct current motor base for the automotive electronic fan as claimed in claim 3, wherein the fixing lugs comprise first lugs (11) and second lugs (12), and a plurality of the first lugs (11) and the second lugs (12) are distributed on the outer peripheral wall of the base plate (1) in a staggered manner, wherein third screw holes formed in the first lugs (11) are stepped holes.

5. The brushless DC motor base for an automotive electronic fan according to claim 1, characterized in that the base plate (1) is further provided with heat radiating fins (13) on the outer peripheral wall thereof, and the plurality of heat radiating fins (13) are of the same size and are spaced from each other in the circumferential direction of the base plate (1).

6. The brushless DC motor base for the automotive electronic fan as claimed in claim 1, wherein a recess (14) is formed on the outer peripheral side of the motor shaft (3), the recess (14) being formed at an end of the motor shaft (3) close to the base plate (1).

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