CN209977214U - Small-size electric motor car differential case box - Google Patents
Small-size electric motor car differential case box Download PDFInfo
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- CN209977214U CN209977214U CN201920822216.4U CN201920822216U CN209977214U CN 209977214 U CN209977214 U CN 209977214U CN 201920822216 U CN201920822216 U CN 201920822216U CN 209977214 U CN209977214 U CN 209977214U
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- bearing frame
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Abstract
The utility model discloses a small-size electric motor car differential case box, including the box, from last to having set gradually driving wheel room, transition wheel room and output wheel room down in the box, the box is including positive casing and the reverse side casing of mutually supporting, just be equipped with the motor shaft hole to the position of driving wheel room on the positive casing, be equipped with outside convex evagination formula driving wheel bearing frame with the symmetrical position in motor shaft hole on the reverse side casing, just be equipped with the transition wheel bearing frame to the position of transition wheel room on the positive casing, be equipped with outside convex evagination formula transition wheel bearing frame with crossing the symmetrical position of ferryboat bearing frame on the reverse side casing, just be equipped with first output shaft hole to the position of output wheel room on the positive casing, be equipped with second output shaft hole with the symmetrical position in first output shaft hole on the reverse side casing. The utility model discloses set up the evagination formula bearing frame, reduce the inside idle space of box, the noise reduction, the comfort level is high, and differential case box is small, is applicable to the not enough lightweight recreational vehicle of motor installation space.
Description
Technical Field
The utility model relates to a differential case especially relates to the electric motor car differential case box of small-size components of a whole that can function independently.
Background
With the continuous development of new energy vehicles, an electric vehicle as a novel environment-friendly vehicle becomes a main vehicle of a plurality of cities and is more and more accepted by the society, at present, except for electric buses, electric tricycles and electric low-speed quadricycles are popularized, in recent years, with the continuous deepening of environmental protection work, carbon emission is reduced, and the improvement of urban air quality is indispensable work content in government work, the increase of demand, more manufacturers intervene in the electric vehicle industry, the competition of electric vehicles is more and more intense, and the existence of electric vehicles in competition is an important task of enterprises. The existing split differential case body of the common electric vehicle is large in size, the free space in the interior of the case body is large, the use noise is too high, the manufacturing cost is too high, and the case body is used for various small recreational vehicles in the market.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a small-size electric motor car differential case box sets up the evagination formula bearing frame, reduces the inside free space of box, still sets up the bridge pipe mounting hole that is isosceles triangle and distributes simultaneously, noise reduction, and the comfort level is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a small-sized electric vehicle differential case body comprises a case body, wherein a driving wheel chamber, a transition wheel chamber and an output wheel chamber are sequentially arranged in the case body from top to bottom, the case body comprises a front shell and a back shell which are mutually matched, a motor shaft hole is arranged at the position, right opposite to the driving wheel chamber, of the front shell, an outward convex driving wheel bearing seat is arranged at the position, symmetrical to the motor shaft hole, of the back shell, a transition wheel bearing seat is arranged at the position, right opposite to the transition wheel chamber, of the front shell, an outward convex transition wheel bearing seat is arranged at the position, symmetrical to the transition wheel bearing seat, of the back shell, a first output wheel shaft hole is arranged at the position, right opposite to the output wheel chamber, of the back shell, a second output wheel shaft hole is arranged at the position, symmetrical to the first output wheel shaft hole, of the motor shaft hole and the outward convex driving wheel bearing seat, a first, The axes of the transition wheel bearing seat, the outward convex transition wheel bearing seat, the first output wheel shaft hole and the second output wheel shaft hole are positioned in the same plane, the outward convex surfaces of the outward convex driving wheel bearing seat and the outward convex transition wheel bearing seat are positioned in the same plane, and the differential case adopts the outward convex bearing seat, so that the internal redundant space is reduced, the volume of the case body is reduced, and the manufacturing materials are saved.
Preferably, the outer edges of the first output wheel shaft hole and the second output wheel shaft hole are outwards protruded to form shaft sleeves, three bridge pipe mounting holes are arranged on the outer edges of the shaft sleeves and distributed in an isosceles triangle shape, the phenomenon that double bearing holes are processed in a non-concentric mode is avoided, the noise caused by the poor concentricity is eliminated, and the part materials and the mounting action are saved under the condition that the strength is not influenced.
Preferably, the outer fringe of front casing motor shaft hole, transition wheel bearing seat outwards stretches out there is the connecting plate, a plurality of motor mounting hole has been seted up on the connecting plate, one the motor mounting hole is arranged in the upper end of connecting plate, all the other the motor mounting hole symmetry is arranged in the both sides of connecting plate, avoids the electric motor car to ride the friction of time difference speed case box and motor, reduces the vibration noise when the electric motor car rides.
Preferably, evenly arranged around the inside and outside output wheel room of front casing has a plurality of first strengthening rib, a plurality of first strengthening rib distributes with one heart, evenly arranged around the inside and outside output wheel room of reverse casing has a plurality of second strengthening rib, a plurality of the second strengthening rib distributes with one heart, and the strengthening rib is all established to the inside and outside of differential case box, makes box intensity strengthen greatly, and the load capacity reinforcing alleviates the fatigue degree of motor greatly.
Preferably, the central positions of the upper end and the lower end of the box body are provided with positioning pin holes, so that the position degree of each matching part is controlled when the box body is combined, and the influence on the service life of parts caused by uneven stress or dislocation of the parts is avoided.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a differential case box adopts the evagination formula bearing frame, has reduced inside free space, reduces the box volume, saves manufacturing material, and this differential case box is small, is applicable to the not enough lightweight recreational vehicle of motor installation space, low in manufacturing cost, simple to operate.
2. The utility model discloses the axle hole outside of the output wheel room of differential case box has arranged the three bridge tube mounting hole that is isosceles triangle, has avoided processing duplex bearing hole decentraction, and it is big to have clear away the noise that causes because of the concentricity difference, has saved spare part material and installation action under the condition that does not influence intensity.
3. The utility model discloses a differential case box passes through connecting plate and motor fixed connection, avoids the electric motor car to ride the friction of differential case box and motor, reduces the vibration noise when the electric motor car rides.
4. The utility model discloses a top is equipped with the location pinhole about the differential case box, each cooperation part position degree control when being favorable to the box combination, has improved the spare part atress inhomogeneous or has misplaced and influence the life of spare part.
5. The utility model discloses an inside and outside strengthening rib all is established to the differential case box, makes box intensity strengthen greatly, and the tired degree of motor is alleviateed greatly to the load capacity reinforcing, prolongs the life of differential case box.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a rear view of the present invention;
fig. 4 is a left side view of the present invention;
fig. 5 is a sectional view taken along the line a-a in fig. 4.
In the figure: 1. the device comprises a box body, 2, a driving wheel chamber, 3, a transition wheel chamber, 4, an output wheel chamber, 5, a front shell, 6, a back shell, 7, a motor shaft hole, 8, an outward convex driving wheel bearing seat, 9, a transition wheel bearing seat, 10, an outward convex transition wheel bearing seat, 11, a first output wheel shaft hole, 12, a second output wheel shaft hole, 13, a shaft sleeve, 14, a bridge pipe mounting hole, 15, a connecting plate, 16, a mounting hole, 17, a first reinforcing rib, 18, a second reinforcing rib, 19, a positioning pin hole, 20 and a bolt mounting hole.
Detailed Description
The technical solutions in the implementation of the present invention will be clear from the following description and accompanying drawings, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 5, a small-sized electric vehicle differential case body provided in an embodiment of the present invention includes a case body 1, a driving wheel chamber 2, a transition wheel chamber 3 and an output wheel chamber 4 are sequentially disposed in the case body 1 from top to bottom, the case body 1 includes a front case 5 and a back case 6 which are mutually matched, the front case 5 and the back case 6 are fixedly connected through bolts through bolt mounting holes 20 by 10 bolts, so as to facilitate assembly, disassembly and maintenance, a motor shaft hole 7 is disposed at a position on the front case 5 which is just opposite to the driving wheel chamber 2, an outwardly convex driving wheel bearing seat 8 is disposed at a position on the back case 6 which is symmetrical to the motor shaft hole 7, a transition wheel bearing seat 9 is disposed at a position on the front case 5 which is just opposite to the transition wheel chamber 3, and an outwardly convex transition wheel bearing seat 10 is disposed at a position on the back case 6 which is symmetrical to the transition wheel bearing seat 9, the front shell 5 is provided with a first output axle hole 11 facing the output wheel chamber 4, the back shell 6 is provided with a second output axle hole 12 symmetrical to the first output axle hole 11, the axes of the motor shaft hole 7, the outward convex driving wheel bearing seat 8, the transition wheel bearing seat 9, the outward convex transition wheel bearing seat 10, the first output axle hole 11 and the second output axle hole 12 are located in the same plane, the outward convex surfaces of the outward convex driving wheel bearing seat 8 and the outward convex transition wheel bearing seat 10 are located in the same plane, and the differential case adopts the outward convex bearing seat, so that the internal redundant space is reduced, the case volume is reduced, and the manufacturing material is saved.
The utility model discloses in, the outside protrusion in outer fringe in first output wheel shaft hole 11, second output wheel shaft hole 12 is equipped with axle sleeve 13, three bridge tube mounting hole 14 has been arranged in axle sleeve 13's the outer fringe, and is three bridge tube mounting hole 14 is isosceles triangle and distributes, has avoided processing duplex bearing hole decentraction, and it is big to have clear away the noise that causes because of the concentricity is poor, has saved spare part material and installation action under the condition that does not influence intensity.
The utility model discloses in, the outer fringe of motor shaft hole 7, cross ferryboat bearing frame 9 on the positive casing 5 outwards stretches out there is connecting plate 15, a plurality of motor mounting hole 16 has been seted up on connecting plate 15, one motor mounting hole 16 arranges in the upper end of connecting plate 15, all the other 16 symmetrical arrangement of motor mounting hole is in the both sides of connecting plate 15, avoids the electric motor car to ride the friction of time difference case box and motor, vibration noise when reducing the electric motor car and riding.
The utility model discloses in, evenly arranged the first strengthening rib 17 of a plurality of, a plurality of around the inside and outside output wheel room 4 of positive casing 5 first strengthening rib 17 distributes with one heart, evenly arranged a plurality of second strengthening rib 18, a plurality of around the inside and outside output wheel room 4 of reverse side casing 6 the strengthening rib is all established to the inside and outside of second strengthening rib 18 distributes with one heart, and the box intensity strengthens greatly, and the load capacity reinforcing alleviates the fatigue degree of motor greatly.
The utility model discloses in, lower extreme central point department is equipped with location pinhole 19 on box 1, each cooperation part position degree control when being favorable to the box combination, has improved the spare part atress inhomogeneous or the dislocation and has influenced the life of spare part.
Examples
In the present embodiment, a set of data is provided, the axial perpendicular distance between the convex driving axle bearing seat 8 and the convex transition axle bearing seat 10 is 40mm, the axial perpendicular distance between the convex transition axle bearing seat 10 and the second output axle hole 12 is 69mm, and the axial perpendicular distance between the convex driving axle bearing seat 8 and the second output axle hole 12 is 109 mm. Adapting transition gear combination teeth: 45 teeth of the large wheel, 1.25 modules and 60.95mm tooth tops, 23 teeth of the small wheel, 1.5 modules and 37.8mm tooth tops, 68 teeth of the adaptive output wheel, 1.5 modules and 106.1mm tooth tops, and the rotating speed ratio of the driving wheel is changed to 8.3 after the transition wheel is matched with the output wheel: 1.
when in use: the differential is arranged in a differential case body, a motor shaft penetrates through a motor shaft hole 7 to be connected with an outward convex driving wheel bearing seat 8, a connecting plate 15 is connected with a motor, two half bearings respectively penetrate through a first output wheel shaft hole 11 and a second output wheel shaft hole 12 to be connected with the differential, and two rear axle tubes are respectively connected with axle tube mounting holes 14 in the front shell 5 and the back shell 6. The utility model discloses utilize the evagination formula bearing frame, reduced inside free space, this differential case box is small, and the noise of riding is low, low in manufacturing cost, is applicable to the recreational vehicle motor installation space not enough.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a small-size electric motor car differential case box, includes box (1), has set gradually driving wheel room (2), transition wheel room (3) and output wheel room (4) from last to down in box (1), and box (1) is including positive casing (5) and reverse side casing (6) of mutually supporting, its characterized in that, just be equipped with motor shaft hole (7) on positive casing (5) to the position of driving wheel room (2), the position symmetrical with motor shaft hole (7) is equipped with outside convex formula driving wheel bearing frame (8) on reverse side casing (6), just be equipped with transition wheel bearing frame (9) on positive casing (5) to the position of transition wheel room (3), the position symmetrical with transition wheel bearing frame (9) is equipped with outside convex formula transition wheel bearing frame (10) on reverse side casing (6), just be equipped with first output wheel shaft hole (11) on positive casing (5) to the position of output wheel room (4) The position, symmetrical with first output wheel shaft hole (11), of reverse side casing (6) is equipped with second output wheel shaft hole (12), the axis of motor shaft hole (7), convex type driving wheel bearing frame (8), transition wheel bearing frame (9), convex type transition wheel bearing frame (10), first output wheel shaft hole (11), second output wheel shaft hole (12) is located the coplanar, the outward convex surface of convex type driving wheel bearing frame (8), convex type transition wheel bearing frame (10) is located the coplanar.
2. The box body of the small electric vehicle differential case as claimed in claim 1, wherein the outer edges of the first output axle shaft hole (11) and the second output axle shaft hole (12) are provided with a shaft sleeve (13) in a protruding manner, three axle tube mounting holes (14) are arranged on the outer edge of the shaft sleeve (13), and the three axle tube mounting holes (14) are distributed in an isosceles triangle shape.
3. The box body of the small-sized electric vehicle differential case as claimed in claim 1, wherein a connecting plate (15) extends outwards from the outer edges of the motor shaft hole (7) and the transition wheel bearing seat (9) of the front shell (5), a plurality of motor mounting holes (16) are formed in the connecting plate (15), one motor mounting hole (16) is arranged at the upper end of the connecting plate (15), and the rest motor mounting holes (16) are symmetrically arranged at two sides of the connecting plate (15).
4. The box body of the small electric vehicle differential case as claimed in claim 1, wherein a plurality of first reinforcing ribs (17) are uniformly arranged around the inner and outer output wheel chambers (4) of the front case (5), a plurality of first reinforcing ribs (17) are concentrically arranged, a plurality of second reinforcing ribs (18) are uniformly arranged around the inner and outer output wheel chambers (4) of the back case (6), and a plurality of second reinforcing ribs (18) are concentrically arranged.
5. The box body of the small electric vehicle differential case as claimed in claim 1, wherein the box body (1) is provided with a positioning pin hole (19) at the center of the upper and lower ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920822216.4U CN209977214U (en) | 2019-06-03 | 2019-06-03 | Small-size electric motor car differential case box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920822216.4U CN209977214U (en) | 2019-06-03 | 2019-06-03 | Small-size electric motor car differential case box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209977214U true CN209977214U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920822216.4U Active CN209977214U (en) | 2019-06-03 | 2019-06-03 | Small-size electric motor car differential case box |
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| CN (1) | CN209977214U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113320637A (en) * | 2021-05-31 | 2021-08-31 | 丰县皓威机械科技有限公司 | Differential case of electric tricycle |
| US20220221043A1 (en) * | 2021-01-14 | 2022-07-14 | Toyota Jidosha Kabushiki Kaisha | Differential housing |
-
2019
- 2019-06-03 CN CN201920822216.4U patent/CN209977214U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220221043A1 (en) * | 2021-01-14 | 2022-07-14 | Toyota Jidosha Kabushiki Kaisha | Differential housing |
| US11619293B2 (en) * | 2021-01-14 | 2023-04-04 | Toyota Jidosha Kabushiki Kaisha | Differential housing |
| CN113320637A (en) * | 2021-05-31 | 2021-08-31 | 丰县皓威机械科技有限公司 | Differential case of electric tricycle |
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