CN112757842A - Transaxle semi-axis - Google Patents
Transaxle semi-axis Download PDFInfo
- Publication number
- CN112757842A CN112757842A CN202011639367.XA CN202011639367A CN112757842A CN 112757842 A CN112757842 A CN 112757842A CN 202011639367 A CN202011639367 A CN 202011639367A CN 112757842 A CN112757842 A CN 112757842A
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- CN
- China
- Prior art keywords
- flange
- shaft body
- flange plate
- shaft
- axle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B35/00—Axle units; Parts thereof ; Arrangements for lubrication of axles
- B60B35/12—Torque-transmitting axles
- B60B35/14—Torque-transmitting axles composite or split, e.g. half- axles; Couplings between axle parts or sections
Abstract
The invention discloses a drive axle half shaft, which comprises a shaft body, a flange plate and an axle housing, wherein one end of the shaft body is connected with a brake drum through the flange plate, the other end of the shaft body is connected with a differential mechanism, an accommodating cavity is formed in the axle housing, the shaft body is accommodated in the accommodating cavity, and the shaft body is detachably connected with the flange plate; further comprising: a flange that extends away from the axle body in a circumferential direction of the axle body, and the flange is disposed between the flange plate and the differential. The stress concentration phenomenon at the joint of the shaft body and the flange plate can be avoided by detachably connecting the shaft body and the flange plate; through setting up the flange and can utilizing the effect of centrifugal force will be attached to the gear oil on the axle body and get rid of to differential mechanism direction, the flow of greatly reduced gear oil flow direction ring flange direction to play and play the sealed effect to the gear oil that lies in differential mechanism, avoid the outside oil seepage in transaxle wheel hub outer end.
Description
Technical Field
The invention relates to the field of motor tricycles, in particular to a drive axle half shaft for a motor tricycle.
Background
At present, most of structures adopted by the semi-axle 100' of the tricycle driving axle are disc structures. As shown in fig. 1, the axle half shaft is mainly composed of a flange 20 ' and a shaft body 10 ' which are of an integrated structure, and the joint of the flange 20 ' and the shaft body 10 ' has the defect of stress concentration, so that the axle half shaft 100 ' is easy to break at the joint; generally, the axle shaft with the structure is provided with an oil seal platform 101 'on the shaft body 10' for adapting the oil seal to seal gear oil, the sealing reliability of the structure is poor, and the outward oil leakage phenomenon of the outer end of the hub of the drive axle often occurs.
Disclosure of Invention
The present invention is directed to the above-mentioned problems and needs, and it is an object of the present invention to provide a half axle of a drive axle, which can achieve the above-mentioned technical objects and bring other technical effects due to the following technical features.
The drive axle half shaft comprises a shaft body, a flange plate and an axle housing, wherein one end of the shaft body is connected with a brake drum through the flange plate, the other end of the shaft body is connected with a differential mechanism, an accommodating cavity is formed in the axle housing, and the shaft body is accommodated in the accommodating cavity,
the shaft body is detachably connected with the flange plate;
further comprising:
a flange that extends away from the axle body in a circumferential direction of the axle body, and the flange is disposed between the flange plate and the differential.
In the technical scheme, when the drive axle half shaft works, gear oil in the differential mechanism flows to the direction of the flange plate, and the stress concentration phenomenon at the joint of the shaft body and the flange plate can be avoided by detachably connecting the shaft body and the flange plate; through setting up the flange and can utilizing the effect of centrifugal force will be attached to the gear oil on the axle body and get rid of and flow to differential mechanism direction on first casing portion, greatly reduced gear oil flows to the flow of ring flange direction to play and play the sealed effect to the gear oil that lies in differential mechanism, avoid the outside oil seepage in transaxle wheel hub outer end. And simple structure, the reliability is strong.
In addition, the drive axle half shaft according to the invention can also have the following technical characteristics:
in one example of the present invention, the axle housing includes a first housing portion and a second housing portion coaxially disposed in an axial direction from one end of the differential to one end of the flange;
wherein the flange is disposed proximate a junction of the first housing portion and the second housing portion;
wherein an inner diameter D1 of the first housing portion is larger than an inner diameter D2 of the second housing portion.
In one example of the present invention, the joint of the first housing portion and the second housing portion is located on a side of the flange adjacent to the flange.
In one example of the present invention, the outer diameter dimension D of the flange satisfies the inner diameters D1 and D2 of the first and second housing portions: 0.8D2 < D1.
In one example of the present invention, a junction of the first housing portion and the second housing portion is provided with a chamfer.
In one example of the invention, the span L1 in the axial direction of the second housing is not less than the span L2 in the axial direction of the brake drum.
In one example of the invention, the shaft body and the flange are coupled by a key.
In one example of the invention, external splines are provided along the outer surface of the shaft body;
the flange plate is provided with a connecting hole, and an internal spline matched with the external spline is arranged along the inner surface of the connecting hole.
In an example of the present invention, the shaft further includes:
and the sealing element is sleeved on the shaft body and is close to the flange plate.
In an example of the present invention, the shaft further includes:
the spiral grooves are distributed along the circumferential direction of the shaft body and extend from one end close to the flange plate to one end away from the flange plate;
wherein, the sealing element is sleeved on the outer side of the spiral groove.
The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. Wherein the drawings are only for purposes of illustrating some embodiments of the invention and are not to be construed as limiting the invention to all embodiments thereof.
FIG. 1 is a schematic structural diagram of an original axle half shaft according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a transaxle half shaft according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a shaft body according to an embodiment of the invention.
List of reference numerals:
drive axle half shafts 100';
a shaft body 10';
an oil seal table 101';
a flange 20';
a brake drum 300;
a differential 200;
drive axle half shafts 100;
a shaft body 10;
a flange 11;
a helical groove 12;
an external spline 13;
a flange 20;
an axle housing 30;
a first housing part 31;
a second housing portion 32;
the accommodation chamber 30A;
a joint 301;
a seal 40.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
A transaxle half shaft 100 according to a first aspect of the present invention, as shown in fig. 2 and 3, includes a shaft body 10, a flange 20, and an axle housing 30, wherein one end of the shaft body 10 is coupled to a brake drum 300 via the flange 20, and the other end is coupled to a differential 200, an accommodating chamber 30A is formed in the axle housing 30, the shaft body 10 is accommodated in the accommodating chamber 30A,
the shaft body 10 is detachably connected with the flange plate 20;
further comprising:
a flange 11 extending away from the axle body 10 in a circumferential direction of the axle body 10, the flange 11 being disposed between the flange plate 20 and the differential 200.
When the drive axle half shaft 100 works, gear oil in the differential mechanism 200 flows to the direction of the flange plate 20, and the stress concentration phenomenon at the joint of the shaft body 10 and the flange plate 20 can be avoided by detachably connecting the shaft body 10 and the flange plate 20; through setting up flange 11 and can utilizing the effect of centrifugal force will be attached to the gear oil on axle body 10 and get rid of to first casing portion 31 and flow to differential mechanism 200 direction, the flow of greatly reduced gear oil flow to ring flange 20 direction to play and play the sealed effect to the gear oil that lies in differential mechanism 200, avoid the outside oil seepage in transaxle wheel hub outer end, simple structure moreover, the good reliability.
It is noted that the flange 11 extends away from the axle body 10 in a circumferential direction of the axle body 10; of course, the flanges 11 may also be disposed at intervals along the circumferential direction of the axle body 10 and extend in a direction away from the axle body 10;
it should be noted that, in the case of the spaced arrangement, the flanges 10 may be of a circular arc structure arranged at equal intervals in the circumferential direction, or may be of a helical blade structure arranged in the circumferential direction, in which the helical blade angularly throws the gear oil toward the differential 200 when rotating.
In one example of the present invention, the axle housing 30 includes a first housing portion 31 and a second housing portion 32 coaxially disposed in the axial direction from one end of the differential 200 to one end of the flange 20;
wherein the flange 11 is provided near a junction 301 of the first housing part 31 and the second housing part 32;
wherein the inner diameter D1 of the first housing part 31 is larger than the inner diameter D2 of the second housing part 32;
by designing the inner diameter of the second housing portion 32 to be smaller than the inner diameter of the first housing portion 31, the weight of the drive axle flange 20 portion can be reduced, thereby improving the performance of the drive axle half shaft 100.
In one example of the present invention, the joint 301 of the first housing part 31 and the second housing part 32 is located on the side of the flange 11 close to the flange 20;
specifically, since the flange 11 is provided close to the first housing portion 31 and the second housing portion 32, the gear oil is thrown toward the first housing portion 31 by the flange 11, and since the inner diameter D2 of the second housing portion 32 is smaller than the inner diameter D1 of the first housing portion 31, the probability that the gear oil flows toward the flange 20 can be reduced, and a partial sealing function is performed.
In an example of the present invention, the outer diameter D of the flange 11 satisfies the inner diameters D1 and D2 of the first and second housing parts 31 and 32: 0.8D2 < D1;
through a number of tests, the outer diameter D of the flange 11 is determined to achieve the best sealing effect.
In an example of the present invention, a junction 301 between the first housing portion 31 and the second housing portion 32 is configured with a chamfer 302, and the provision of the chamfer 302 can facilitate the gear oil to flow from the inside of the second housing portion 32 to the inside of the first housing portion 31, so that the gear oil flows more smoothly.
In one example of the invention, the span L1 in the axial direction of the second housing part 32 is not less than the span L2 in the axial direction of the brake drum 300;
this allows the second housing portion 32 to be optimally fitted to the brake drum 300, resulting in a higher overall fit and ease of assembly.
In one example of the present invention, the shaft body 10 is coupled to the flange plate 20 by a key; therefore, the shaft body 10 and the flange plate 20 can be conveniently disassembled and assembled, and the connection is convenient.
In one example of the present invention, external splines 13 are provided along the outer surface of the shaft body 10;
a connecting hole is arranged on the flange plate 20, and an internal spline matched with the external spline 13 is arranged along the inner surface of the connecting hole;
the flange plate 20 can be conveniently connected with the shaft body 10 in a mode of matching the external splines 13 with the internal splines, and the reliability is high.
Of course, the present invention is not limited thereto, and the shaft body 10 and the hub may be coupled by a common key, that is, a key is provided on the shaft body 10 and a key groove is provided on the flange 20 to match with the key.
In an example of the present invention, the axle body 10 further includes:
the sealing element 40 is sleeved on the shaft body 10, and is arranged close to the flange plate 20;
the sealing of the gear oil is further enhanced by the provision of a seal 40, which prevents some of the gear oil entering the second housing portion 32 from flowing into the direction of the flange 20, e.g., the seal 40 is an oil seal. Of course, the flange 20 is itself in sealing engagement with the brake drum 300, and the seal 40 is provided to further enhance sealing in the prior art.
In an example of the present invention, the axle body 10 further includes:
the spiral grooves 12 are distributed along the circumferential direction of the shaft body 10, and extend from one end close to the flange plate 20 to one end away from the flange plate 20;
wherein, the sealing element 40 is sleeved outside the spiral groove 12;
the spiral groove 12 and the sealing member 40 together form a screw pump, and the gear oil flowing towards the flange 20 enters the second housing part 32 and flows back to the direction of the differential 200 under the action of the screw pump, so that the gear oil is prevented from flowing towards the flange 20, and the sealing effect is further achieved.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not necessarily denote a limitation of quantity. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
While the exemplary embodiment of the transaxle half shaft 100 proposed by the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that various modifications and changes can be made to the specific embodiments described above without departing from the concept of the present invention, and various combinations of the proposed technical features and structures can be made without departing from the scope of the present invention as defined by the appended claims.
Claims (10)
1. A drive axle half shaft comprises a shaft body (10), a flange plate (20) and an axle housing (30), wherein one end of the shaft body (10) is connected with a brake drum (300) through the flange plate (20), the other end of the shaft body is connected with a differential (200), an accommodating cavity (30A) is formed in the axle housing (30), the shaft body (10) is accommodated in the accommodating cavity (30A), and the drive axle half shaft is characterized in that,
the shaft body (10) is detachably connected with the flange plate (20);
further comprising:
a flange (11) that extends away from the axle body (10) in the circumferential direction of the axle body (10), the flange (11) being disposed between the flange plate (20) and the differential (200).
2. The transaxle half shaft of claim 1,
the axle housing (30) comprises a first housing part (31) and a second housing part (32) which are coaxially arranged from one end of the differential (200) to one end of the flange plate (20) along the axial direction;
wherein the flange (11) is arranged close to a junction (301) of the first housing part (31) and the second housing part (32);
wherein the inner diameter D1 of the first housing part (31) is larger than the inner diameter D2 of the second housing part (32).
3. The transaxle half shaft of claim 2,
the joint (301) of the first housing part (31) and the second housing part (32) is positioned on one side of the flange (11) close to the flange (20).
4. The transaxle half shaft of claim 2,
the outer diameter D of the flange (11) satisfies the following requirements with respect to the inner diameters D1 and D2 of the first and second housing parts (31 and 32): 0.8D2 < D1.
5. The transaxle half shaft of claim 2,
a chamfer (302) is arranged at the joint (301) of the first housing part (31) and the second housing part (32).
6. The transaxle half shaft of claim 1,
a span L1 in the axial direction of the second housing is not less than a span L2 in the axial direction of the brake drum (300).
7. The transaxle half shaft of claim 1,
the shaft body (10) is connected with the flange plate (20) through a key.
8. The transaxle half shaft of claim 7,
an external spline (13) is arranged along the outer surface of the shaft body (10);
the flange plate (20) is provided with a connecting hole, and an internal spline matched with the external spline (13) is arranged along the inner surface of the connecting hole.
9. The transaxle half shaft of claim 1,
the shaft body (10) further comprises:
the sealing element (40) is sleeved on the shaft body (10) and is close to the flange plate (20).
10. The transaxle half shaft of claim 9,
the shaft body (10) further comprises:
the spiral grooves (12) are distributed along the circumferential direction of the shaft body (10), and extend from one end close to the flange plate (20) to one end far away from the flange plate (20);
wherein the sealing element (40) is sleeved outside the spiral groove (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639367.XA CN112757842A (en) | 2020-12-31 | 2020-12-31 | Transaxle semi-axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639367.XA CN112757842A (en) | 2020-12-31 | 2020-12-31 | Transaxle semi-axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112757842A true CN112757842A (en) | 2021-05-07 |
Family
ID=75698390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011639367.XA Pending CN112757842A (en) | 2020-12-31 | 2020-12-31 | Transaxle semi-axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112757842A (en) |
-
2020
- 2020-12-31 CN CN202011639367.XA patent/CN112757842A/en active Pending
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