CN2758119Y

CN2758119Y - Wheel hub of electric vehicle brushless motor

Info

Publication number: CN2758119Y
Application number: CN 200420110745
Authority: CN
Inventors: 张盈泉
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-03
Filing date: 2004-12-03
Publication date: 2006-02-15
Anticipated expiration: 2014-12-03

Abstract

The utility model relates to a wheel hub, particularly a wheel hub of an electric vehicle brushless motor. The utility model is composed of a wheel hub body (1), wherein the wheel hub body (1) is composed of an outer layer (2) and an inner layer (3), wherein the center of the outer layer (2) is provided with one containing round hole; the inner layer (3) is annular; the outer side wall of the inner layer (3) is tightly attached with the inner wall of the containing round hole on the outer layer (2) together, forming an integral structure. The circumference of the upper part of the outer side wall of the outer layer (2) is provided with a first convex ring (21); the circumference of the lower part of the outer side wall of the outer layer (2) is provided with a second convex ring (22); at least three wire through holes (23) are arranged on the circumference of the first convex ring (21); at least three wire through holes (23) are arranged at the corresponding position of the circumference of the second convex ring (22). At least three thread holes (24) are arranged on the circumferences of the upper and the lower end faces of the outer layer (2). The utility model has the advantages of light weight, easy manufacturing, low cost, etc.

Description

The brushless motor for automobile wheel hub

Technical field

The utility model relates to a kind of wheel hub, relates in particular to a kind of wheel hub that is used for brushless motor for automobile.

Background technology

Electric vehicle hub is the core component of elec. vehicle, and whether the advanced person will directly have influence on further developing of elec. vehicle to its performance.It generally includes hub body, end cap, rotor, stator, hub body cooperates with end cap forms hub shell, stator is fixed in the hub body, because usually brushless motor for automobile is with inner need make with material that can magnetic conduction on the hub body, therefore the in-to-in material just must adopt magnetic conductive metal (as dead-soft steel) to make, so general brushless motor for automobile all is cylinder iron to cast and into a single integrated structure with hub body, because cylinder iron density is relatively large, so it is heavier with its its weight of wheel hub of making, this wheel hub of all cylinder iron making is installed on the battery-driven car, will increase the weight of whole battery-driven car, therefore can waste more electric energy, also because we need to process a lot of tapped bore and wire hole on hub body, and the hardness ratio of cast iron is bigger, to on the wheel hub of cylinder iron making, process these holes, and processing is difficulty relatively, therefore influence the process velocity of wheel hub, it also must be sent a car with lathe, also increased simultaneously the productive costs of wheel hub, work as us in addition and on castiron wheel hub, spray paint, spray lacquer and come off easily.Therefore above-mentioned wheel hub also needs to improve further.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of processing in light weight, easy, brushless motor for automobile wheel hub that cost is low are provided at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of brushless motor for automobile wheel hub, it includes hub body, it is characterized in that described hub body is made up of outer and internal layer, its center of described skin has a ccontaining circular hole, described internal layer in the form of a ring, and the lateral wall of this internal layer fits together tightly with the outer inwall of ccontaining circular hole and into a single integrated structure, outer field lateral wall top week side has first bulge loop, outer field lateral wall bottom week side also has second bulge loop, at least be provided with three wire holes at the above-mentioned first bulge loop periphery, second bulge loop periphery corresponding position also is provided with three wire holes at least, and all sides in described outer upper and lower end face respectively are shaped at least three tapped bore.

In order to make the more firm of combination between internal layer and the skin, can not skid each other, make on the hub body system tapped bore convenient, bottom respectively is shaped at least three breach on above-mentioned internal layer, have and the corresponding lug boss of breach in the inwall corresponding position of the ccontaining circular hole of described skin, described lug boss is fastened in the above-mentioned breach, and the part of described tapped bore just is arranged on the above-mentioned lug boss.

Because the cross section of outer and internal layer be a circle, so above-mentioned wire hole, tapped bore and breach are all being good along the circumference rectangular distribution.Wire hole on the first above-mentioned bulge loop has 18, and the wire hole on second bulge loop has 18, and the tapped bore of described outer upper and lower end face respectively has eight, and the breach on the internal layer in the bottom respectively has eight.

Compared with prior art, advantage of the present utility model is: since usually brushless motor for automobile with inner must make on the hub body with material that can magnetic conduction, the in-to-in material generally adopts magnetic conductive metal (as dead-soft steel) to make, the outside of hub body then is not to adopt magnetic conductive metal to make, and the outer part of hub body is owing to need a lot of tapped bore of processing and wire hole, and magnetic conductive metal such as dead-soft steel) its hardness, density is generally all bigger, be unfavorable for thread mill drilling and wire hole in the above, therefore the hub body outside is then to adopt some than being easier to processing, and hardness, the less metal (as aluminium) of density is processed into to good, and the related hub body of the utility model, it is made up of internal layer and outer two parts, so its internal layer, skin can adopt different materials to make, roll with the cold steel plate of low-carbon (LC) as internal layer and to form, its skin then adopts aluminium to make, so not only can strengthen hub body inside and have same magnetic conduction effect, but also alleviate hub body single-piece weight and be convenient at hub body external process tapped bore and wire hole.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is that the A-A of Fig. 3 is to cutaway view;

Fig. 3 is the birds-eye view of internal layer among the utility model embodiment;

Fig. 4 is that the B-B of Fig. 3 is to cutaway view.

The specific embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

A kind of brushless motor for automobile wheel hub shown in Fig. 1～2, it includes hub body 1, described hub body 1 is made up of skin 2 and internal layer 3, described outer 2 its centers have a ccontaining circular hole, described internal layer 3 in the form of a ring, the inwall of ccontaining circular hole fits together and into a single integrated structure tightly on the lateral wall of this internal layer 3 and outer 2, described outer 2 lateral wall top week side has first bulge loop 21, outer 2 lateral wall bottom week side also has second bulge loop 22, be evenly equipped with 18 wire holes 23 along above-mentioned first bulge loop, 21 peripheries, be evenly equipped with 18 wire holes 23 along second bulge loop, 22 peripheries, all sides respectively are evenly equipped with eight tapped bore 24 in outer 2 upper and lower end faces, bottom respectively is evenly equipped with eight breach 31 on above-mentioned internal layer 3, and the following relatively breach 31 of the breach 31 of the internal layer 3 tops certain angle that staggers, shown in Fig. 3～4, and the inwall corresponding position of ccontaining circular hole has and breach 31 corresponding lug bosses 25 on described outer 2, described lug boss 25 is fastened in the above-mentioned breach 31, and the part of described tapped bore 24 just is arranged on the above-mentioned lug boss 31.

Above-mentioned internal layer 3 is actually an iron ring, it adopts mild steel plate punching press crimping to form, outer 2 then is to combine with iron ring internal layer 2 by preesure-poured mode and into a single integrated structure with aluminium, adopt preesure-poured mode can simplify production technology, because its outer 2 employing aluminium are made, not only can reduce hub body 1 single-piece weight, and the perforating tapping is more prone on the skin 2 that is formed from aluminium.

Claims

1, a kind of brushless motor for automobile wheel hub, it includes hub body (1), it is characterized in that described hub body (1) is made up of outer (2) and internal layer (3), its center of described skin (2) has a ccontaining circular hole, described internal layer (3) in the form of a ring, and the inwall that ccontaining circular hole is gone up in the lateral wall of this internal layer (3) and outer (2) fits together and into a single integrated structure tightly, the lateral wall top week side of described skin (2) has first bulge loop (21), the lateral wall bottom week side of outer (2) has second bulge loop (22), at least be provided with three wire holes (23) at above-mentioned first bulge loop (21) periphery, the peripheral corresponding position of second bulge loop (22) also is provided with three wire holes (23) at least, and described skin (2) upper and lower end face week side respectively is shaped at least three tapped bore (24).

2, brushless motor for automobile wheel hub according to claim 1, it is characterized in that the last bottom of described internal layer (3) respectively is shaped at least three breach (31), have and the corresponding lug boss (25) of breach (31) in the inwall corresponding position of the ccontaining circular hole of described skin (2), described lug boss (25) is fastened in the above-mentioned breach (31), and the part of described tapped bore (24) just is arranged on the above-mentioned lug boss (31).

3, brushless motor for automobile wheel hub according to claim 1 is characterized in that described wire hole (23) and tapped bore (24) all are along the circumference well-distributed.

4, brushless motor for automobile wheel hub according to claim 3, it is characterized in that the wire hole (23) on described first bulge loop (21) has 18, wire hole (23) on second bulge loop (22) has 18, and the tapped bore (24) of described skin (2) upper and lower end face respectively has eight.

5, brushless motor for automobile wheel hub according to claim 2 is characterized in that described breach (31) is along the circumference well-distributed.

6, brushless motor for automobile wheel hub according to claim 2 is characterized in that the breach (31) that described internal layer (3) is gone up in the bottom respectively has eight.