CN214698783U

CN214698783U - High-precision hub unit of new energy automobile

Info

Publication number: CN214698783U
Application number: CN202120847074.4U
Authority: CN
Inventors: 肖旭; 毛小伟; 甄玉洁
Original assignee: Hangzhou Baolijia Car Axletree Corp
Current assignee: Hangzhou Baolijia Car Axletree Corp
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-11-12
Anticipated expiration: 2031-04-23

Abstract

The utility model belongs to the technical field of the wheel hub unit, especially, be new energy automobile high accuracy wheel hub unit, including the flange, the flange includes disk body and spline groove, and one side that the inner circle was kept away from to the surface of flange bonds and has the inner seal circle, and the surface of inner circle bonds and has the external seal circle, and the outer lane has been cup jointed to the surface of external seal circle, and the outer lane includes calliper installation face and lip, and equal roll installation has the steel ball between outer lane and the flange and between outer lane and the inner circle, and one side that the flange is close to the lip is provided with sunkenly. The utility model discloses a set up calliper installation face, because the cross section of calliper installation face is trapezoidal shape, therefore the butt joint of calliper and outer lane is easier, reduces the assembly degree of difficulty of calliper, and is sunken through setting up, when the outer lane takes place to sideslip, sunken make the lip can not contact with the disk body, consequently can not produce the friction and the wearing and tearing condition appears, avoid flange or outer lane to damage, prolonged the life of this device.

Description

High-precision hub unit of new energy automobile

Technical Field

The utility model relates to a wheel hub unit technical field specifically is new energy automobile high accuracy wheel hub unit.

Background

The new energy automobile adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and forms an automobile with advanced technical principle, new technology and new structure. The automobile hub unit is used for bearing and providing accurate guide for rotation of a hub, bears axial load and radial load and is an important part. The automobile hub unit is developed on the basis of a standard angular contact ball bearing and a tapered roller bearing, integrates two sets of bearings, has the advantages of good assembly performance, capability of omitting clearance adjustment, light weight, compact structure, large load capacity, capability of filling lubricating grease for sealing the bearings in advance, capability of omitting external hub sealing, free maintenance and the like, is widely used in cars, and has the tendency of gradually expanding application in trucks.

There are the following problems:

1. on the high-precision wheel hub unit of present new energy automobile, the part that is used for installing calliper is cylindrically to in order to make the laminating degree after the installation higher, the external diameter of the position of installation calliper usually differs less with the internal diameter of calliper, leads to installation calliper to need special equipment just can install calliper, and the degree of difficulty is great.

2. When the high-precision hub unit of the current new energy automobile sideslips when the outer ring, the outer ring is easily contacted with a disc body of the flange, so that large abrasion is caused between the outer ring and the flange, and the service life of the hub unit is shortened.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a high-accuracy wheel hub unit of new energy automobile has solved the degree of difficulty of installation calliper great and when the outer lane appear sideslipping the outer lane problem of the disk body contact with the flange easily.

In order to achieve the above object, the utility model provides a following technical scheme: high-accuracy wheel hub unit of new energy automobile, including the flange, the flange includes disk body and spline groove, the inner circle has been cup jointed to one side that the disk body was kept away from to the surface of flange, one side that the inner circle was kept away from to the surface of flange bonds and has the inner seal circle, the surface bonding of inner circle has the external seal circle, the outer lane has been cup jointed to the surface of external seal circle, the outer lane includes calliper installation face and lip, equal roll installation has the steel ball between outer lane and the flange and between outer lane and the inner circle, one side that the flange is close to the lip is provided with sunkenly, the holder has been cup jointed to the surface of steel ball.

As the utility model discloses a preferred technical scheme, one side that the inner wall of flange is close to the inner circle is provided with the counter bore, first bolt is installed to the medial surface screw thread of disk body.

As an optimal technical scheme of the utility model, the second bolt is installed to the medial surface screw thread of outer lane, the cross section of calliper installation face is isosceles trapezoid.

As an optimized technical scheme of the utility model, interior sealing washer and external seal circle are the SPCC of butadiene acrylonitrile rubber parcel, the steel ball is the inner wall of annular array distribution in the outer lane.

As an optimized technical scheme of the utility model, the quantity of steel ball and holder is two sets ofly, the material of inner circle and steel ball is GCr15 steel.

As a preferred technical scheme of the utility model, one side that the lip was kept away from to calliper installation face is provided with spacing limit, the quantity of first bolt and second bolt is four groups.

Compared with the prior art, the utility model provides a high-accuracy wheel hub unit of new energy automobile possesses following beneficial effect:

1. this high-accuracy hub unit of new energy automobile through setting up calliper installation face, because the cross section of calliper installation face is trapezoidal shape, therefore calliper and the butt joint of outer lane are easier, reduce the assembly degree of difficulty of calliper.

2. This high-accuracy wheel hub unit of new energy automobile is sunken through setting up, when the outer lane takes place to sideslip, sunken make the lip can not contact with the disk body, consequently can not produce the friction and the wearing and tearing condition appears, avoids flange or outer lane to damage, has prolonged the life of this device.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a side view of the structure of the present invention;

fig. 3 is an enlarged schematic view of the position a of the present invention.

In the figure: 1. a flange; 2. a tray body; 3. a spline groove; 4. an inner ring; 5. an inner seal ring; 6. an outer sealing ring; 7. an outer ring; 8. a caliper mounting surface; 9. a lip; 10. a steel ball; 11. recessing; 12. a holder; 13. a counter bore; 14. a first bolt; 15. a second bolt; 16. and (7) limiting the edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides the following technical solutions: high-accuracy wheel hub unit of new energy automobile, including flange 1, flange 1 includes disk body 2 and spline groove 3, inner circle 4 has been cup jointed to one side that disk body 2 was kept away from to the surface of flange 1, the one side bonding that inner circle 4 was kept away from to the surface of flange 1 has inner seal ring 5, the surface bonding of inner circle 4 has outer seal ring 6, outer lane 7 has been cup jointed to the surface of outer seal ring 6, outer lane 7 includes calliper installation face 8 and lip 9, equal roll installation has steel ball 10 between outer lane 7 and the flange 1 and between outer lane 7 and the inner circle 4, one side that flange 1 is close to lip 9 is provided with sunken 11, holder 12 has been cup jointed to the surface of steel ball 10.

In this embodiment, the machining precision of spline grooves 3 reaches 6H, the precision is higher, make the assembly of drive shaft and flange 1 tighter, inner seal ring 5 seals the gap between outer lane 7 and inner lane 4 with outer seal ring 6, prevent that lubricating grease from leaking, and prevent that the dust from getting into the gap between outer lane 7 and the inner lane 4, lip 9 supports inner seal ring 5, disk body 2 is at some materials of sunken 11 department defect, when preventing that outer lane 7 from taking place to sideslip, lip 9 produces the friction with disk body 2 contact, lead to disk body 2 and outer lane 7 to appear wearing and tearing, holder 12 separates each steel ball 10, prevent to appear the friction between each steel ball 10, lead to shortening the life of steel ball 10.

Specifically, a counter bore 13 is arranged on one side, close to the inner ring 4, of the inner wall of the flange 1, and a first bolt 14 is installed on the inner side face of the disc body 2 in a threaded mode.

In this embodiment, the counter bore 13 is used for installing the center ring, so that the spindle head and the hub are assembled more tightly, and the first bolt 14 is used for installing the brake disc on the flange 1.

Specifically, the inner side surface of the outer ring 7 is provided with a second bolt 15 in a threaded manner, and the cross section of the caliper mounting surface 8 is isosceles trapezoid.

In this embodiment, the second bolt 15 mounts the outer race 7 to the axle housing, and the cross-sectional shape of the caliper mounting face 8 facilitates the assembly of the caliper to the outer race 7.

Specifically, the inner seal ring 5 and the outer seal ring 6 are both made of SPCC wrapped by nitrile rubber, and the steel balls 10 are distributed on the inner wall of the outer ring 7 in an annular array.

In this embodiment, the SPCC can improve the strength of the inner seal ring 5 and the outer seal ring 6, and the nitrile rubber is resistant to oil and high temperature, and has elastic damping, so that the inner seal ring 5 and the outer seal ring 6 are not easy to slip.

Specifically, the number of the steel balls 10 and the number of the retainer 12 are two, and the material of the inner ring 4 and the material of the steel balls 10 are GCr15 steel.

In this embodiment, each group of steel balls 10 has fourteen steel balls 10, and the GCr15 steel is a high-carbon chromium bearing steel with less alloy content, and has higher hardness, good wear resistance and higher contact fatigue performance, so that the steel balls 10 are not easily damaged, and the service life is longer.

Specifically, one side of the caliper mounting surface 8, which is far away from the lip 9, is provided with a limiting edge 16, and the number of the first bolts 14 and the number of the second bolts 15 are four.

In this embodiment, spacing limit 16 prevents that calliper assembly from overtravel, avoids calliper and brake disc's interval undersize to lead to braking system too sensitive.

The utility model discloses a theory of operation and use flow: before the use, install calliper on calliper installation face 8, because calliper installation face 8's cross section is trapezoidal shape, consequently calliper and outer lane 7 butt joint are easier, reduce calliper's the assembly degree of difficulty, install outer lane 7 on the axle housing through second bolt 15, the drive shaft gets into spline groove 3, because spline groove 3's machining precision is higher, make the assembly of drive shaft and flange 1 inseparabler, then install the brake disc on flange 1 through first bolt 14, during the use, when sideslipping appears in outer lane 7, lip 9 removes to the direction of disk body 2, but because the existence of sunken 11 on the disk body 2, lip 9 can not contact with disk body 2, also can not produce the friction and the wearing and tearing condition, avoid flange 1 or outer lane 7 to damage, the life of this device has been prolonged.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. High-accuracy wheel hub unit of new energy automobile, including flange (1), its characterized in that: flange (1) includes disk body (2) and spline groove (3), inner circle (4) have been cup jointed to one side that disk body (2) were kept away from to the surface of flange (1), one side that inner circle (4) were kept away from to the surface of flange (1) bonds and has interior sealing washer (5), the surface bonding of inner circle (4) has outer sealing washer (6), outer lane (7) have been cup jointed to the surface of outer sealing washer (6), outer lane (7) are including calliper installation face (8) and lip (9), all roll between outer lane (7) and flange (1) and between outer lane (7) and inner circle (4) and install steel ball (10), one side that flange (1) is close to lip (9) is provided with sunken (11), holder (12) have been cup jointed to the surface of steel ball (10).

2. The new energy automobile high-precision hub unit as claimed in claim 1, wherein: a counter bore (13) is formed in one side, close to the inner ring (4), of the inner wall of the flange (1), and a first bolt (14) is installed on the inner side face of the disc body (2) in a threaded mode.

3. The new energy automobile high-precision hub unit as claimed in claim 1, wherein: and a second bolt (15) is installed on the inner side surface of the outer ring (7) in a threaded manner, and the cross section of the caliper installation surface (8) is in an isosceles trapezoid shape.

4. The new energy automobile high-precision hub unit as claimed in claim 1, wherein: the inner sealing ring (5) and the outer sealing ring (6) are both SPCC wrapped by nitrile rubber, and the steel balls (10) are distributed on the inner wall of the outer ring (7) in an annular array.

5. The new energy automobile high-precision hub unit as claimed in claim 1, wherein: the number of the steel balls (10) and the number of the retainer (12) are two, and the material of the inner ring (4) and the material of the steel balls (10) are GCr15 steel.

6. The new energy automobile high-precision hub unit as claimed in claim 2, wherein: one side, far away from the lip (9), of the caliper mounting surface (8) is provided with a limiting edge (16), and the number of the first bolts (14) and the number of the second bolts (15) are four.