CN209184363U - The safeguard structure of New energy automobile motor shaft end - Google Patents
The safeguard structure of New energy automobile motor shaft end Download PDFInfo
- Publication number
- CN209184363U CN209184363U CN201822175034.0U CN201822175034U CN209184363U CN 209184363 U CN209184363 U CN 209184363U CN 201822175034 U CN201822175034 U CN 201822175034U CN 209184363 U CN209184363 U CN 209184363U
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- protection shield
- oil seal
- outside framework
- framework oil
- shaft
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Abstract
The utility model discloses a kind of safeguard structures of New energy automobile motor shaft end, this structure includes machine shaft, end cap and outside framework oil seal, end cap and outside framework oil seal are set to machine shaft and outside framework oil seal is located on the inside of end cap, this structure further includes protection shield and plug screw, protection shield interference is set to the shaft shoulder of machine shaft and the protrusion end face of protection shield inner ring against shaft shoulder end face, labyrinth structure is formed between protection shield and end cap, protection shield opens up technique screw hole in outside framework oil seal position, and plug screw is twisted in technique screw hole.This structure overcomes conventional motors shaft end to protect defect, it solves New energy automobile motor and causes outside framework oil seal to fail in ponding, muddy road surface long-play, and then the technical issues of causing electrical fault, improve the service life of outside framework oil seal, it is ensured that the normal reliable of motor is run.
Description
Technical field
The utility model relates to a kind of safeguard structures of New energy automobile motor shaft end.
Background technique
Compared to conventional motors, the quality standard of New energy automobile motor is higher, and life requirements is longer, and motor uses the longevity
Life is general to be required to be greater than 600,000 kilometers or 8 years, and this requires each components of motor stronger durability.It is found in practice,
When bad weather, especially southern plum rain season, often there is paroxysmal damage in motor shaft end outside framework oil seal, causes motor event
Barrier.It has been observed that vehicle driving is in ponding, muddy road surface, muddy water, mud, the gravel impact outside framework oil seal splash, at any time
Accumulation has greatly accelerated outside framework oil seal damage, and then extraneous steam, foreign matter enter motor, and motor is caused to break down.For bone
The damage of frame oil sealing, there are also shaft ends to protect structure in the prior art, but the construction of these structures is unreasonable, with machine shaft
When rotation, durability is poor, power consumption is high, noise is big, and it is inconvenient to assemble and disassemble maintenance.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of safeguard structures of New energy automobile motor shaft end, originally
Structure overcomes conventional motors shaft end to protect defect, solves New energy automobile motor and causes in ponding, muddy road surface long-play
Outside framework oil seal failure, and then the technical issues of cause electrical fault, improves the service life of outside framework oil seal, it is ensured that motor it is normal
Reliability service.
In order to solve the above technical problems, the safeguard structure of the utility model New energy automobile motor shaft end includes that motor turns
Axis, end cap and outside framework oil seal, the end cap and outside framework oil seal are set to the machine shaft and outside framework oil seal is located at the end cap
Inside, this structure further include protection shield and plug screw, and the protection shield interference is set to the shaft shoulder and protection shield of the machine shaft
The protrusion end face of inner ring forms labyrinth structure between shaft shoulder end face, the protection shield and end cap, and the protection shield is described
Outside framework oil seal position opens up technique screw hole, and the plug screw is twisted in the technique screw hole.
Further, the linear expansion coefficient of the protection shield is less than the linear expansion coefficient of the machine shaft.
Further, the labyrinth structure includes several labyrinth pawls and the end cap of the radially spaced setting of the protection shield
Several maze troughs of radially spaced setting, several labyrinth pawls are located in several maze troughs.
Further, the labyrinth pawl and maze trough are respectively two, and the gap between the labyrinth pawl and maze trough
For 0.4~0.8mm.
Further, the gap between the labyrinth pawl and maze trough is 0.5mm.
Further, the shaft part length that the machine shaft installs the protection shield is greater than 3~5mm of the protection shield thickness.
Since the safeguard structure of the utility model New energy automobile motor shaft end uses above-mentioned technical proposal, i.e. this structure
Including machine shaft, end cap and outside framework oil seal, end cap and outside framework oil seal are set to machine shaft and outside framework oil seal is located in end cap
Side, this structure further include protection shield and plug screw, and protection shield interference is set to the shaft shoulder of machine shaft and the protrusion of protection shield inner ring
End face forms labyrinth structure against shaft shoulder end face between protection shield and end cap, protection shield opens up technique spiral shell in outside framework oil seal position
Hole, plug screw are twisted in technique screw hole.This structure overcomes conventional motors shaft end to protect defect, solves New energy automobile motor in product
Water, muddy road surface long-play cause outside framework oil seal to fail, and then the technical issues of cause electrical fault, improve outside framework oil seal
Service life, it is ensured that the normal reliable of motor is run.
Detailed description of the invention
The utility model is described in further detail with embodiment with reference to the accompanying drawing:
Fig. 1 is the safeguard structure schematic diagram of the utility model New energy automobile motor shaft end；
Fig. 2 is the portion A enlarged diagram in Fig. 1.
Specific embodiment
Embodiment is as depicted in figs. 1 and 2, and the safeguard structure of the utility model New energy automobile motor shaft end includes that motor turns
Axis 1, end cap 2 and outside framework oil seal 3, the end cap 2 and outside framework oil seal 3 are set to the machine shaft 1 and outside framework oil seal 3 is located at institute
2 inside of end cap is stated, this structure further includes protection shield 4 and plug screw 5, and 4 interference of protection shield is set to the shaft shoulder of the machine shaft 1
11 and 4 inner ring of protection shield protrusion end face 41 formed between 11 end face of the shaft shoulder, the protection shield 4 and end cap 2 labyrinth knot
Structure, the protection shield 4 open up technique screw hole in 3 position of outside framework oil seal, and the plug screw 5 is twisted in the technique screw hole.
Preferably, the linear expansion coefficient of the protection shield 4 is less than the linear expansion coefficient of the machine shaft 1.Machine shaft
Material 20CrMnTi, 35CrMo, 42CrMo and 38CrMoAl can be selected, 1Cr12,0Cr13 can be selected in the material of protection shield
And 1 Cr13, with machine shaft material be 20CrMnTi, protection shield material is that 1Cr12 is best.
Preferably, the labyrinth structure includes several labyrinth pawls 42 of the radially spaced setting of the protection shield 4 and described
Several maze troughs 21 of the radially spaced setting of end cap 2, several labyrinth pawls 42 are located in several maze troughs 21.
Preferably, the labyrinth pawl 42 and maze trough 21 are respectively two, and the labyrinth pawl 42 and maze trough 21 it
Between gap be 0.4~0.8mm.
Preferably, the gap between the labyrinth pawl 42 and maze trough 21 is 0.5mm.
Preferably, 12 length of shaft part that the machine shaft 1 installs the protection shield 4 be greater than 4 thickness 3 of the protection shield~
5mm。
For this structure by protection shield interference hot jacket on machine shaft, the two uses preferred optimal material, guarantees protection shield
With the raising of machine shaft temperature, the thermal expansion amount in the protection shield hole of cooperation is constantly less than the thermal expansion amount of machine shaft, so that
Magnitude of interference between the two constantly becomes larger, and couples more and more secured.The labyrinth pawl of protection shield protrudes into the maze trough of end cap, labyrinth pawl
Preferred small―gap suture is used between maze trough, when protection shield is rotated with machine shaft, labyrinth pawl is in maze trough inward turning
Turn, the two does not contact, and not only plays protective action in this way, but also will not generate big frictional dissipation.Bone is housed with interference in end cap
Frame oil sealing, outside framework oil seal inner ring are directly contacted with machine shaft, and air-tightness is good between the two, can satisfy that IP67 is airtight to be wanted
It asks.When the external impurities such as mud, gravel are splashed to outside framework oil seal, the protection shield before outside framework oil seal plays a role, by these sundries
Outside the protection shield refused, outside framework oil seal is protected well, and these splash the sundries on protection shield, in the effect of centrifugal force
Under, constantly got rid of away from protection shield.The shaft shoulder of machine shaft and the raised face contact of protection shield, not only played the role of positioning, but also can make
Protection shield is relied under the action of big sundries impact force.For convenience of disassembly, the technique spiral shell there are two M6 is stayed on protection shield
Hole, electric machine operation state are plugged with plug screw in technique screw hole, are entered in protection shield by technique screw hole and skeleton with stopping external impurities
Oil sealing 4 contacts, and when needing to inspect periodically maintenance outside framework oil seal, and can remove plug screw, using two technique screw holes, remove protection
Shield.Protection shield flat structure, rule, when rotating with machine shaft, wind frictional resistance consumption is small, and noise is low, and NVH characteristic is good, and this is anti-
Uniformly, symmetrically, dynamic balance performance is also preferable for shield structure.
New-energy automobile is operated under the bad working environments such as ponding, miriness, this structure can function well as shaft end bone
The protective action of frame oil sealing keeps outside framework oil seal failure risk controllable, and then guarantee outside framework oil seal by inspecting periodically, safeguarding
Service life, it is ensured that the reliability service of motor.
It is designed between this structural shielding shield and end cap using labyrinth structure, had both guaranteed that extraneous mud was separated with outside framework oil seal,
When guaranteeing that protection shield is rotated with axis again, relative friction will not be generated with end cap.Utilize the linear of machine shaft and protection shield material
Thermal expansion coefficient is different, and the coefficient of expansion of motor shaft is big, and the coefficient of expansion of protection shield is small, and the micro- interference of protection shield turns in motor
On axis, machine shaft revolving speed is increased, and temperature becomes larger also with raising, centrifugal force, while machine shaft expands thicker, protection shield position
On the outside of machine shaft, at a temperature below machine shaft, and its thermal expansion coefficient is low, thus its swell increment is less than machine shaft
Swell increment, total interference constantly become larger, then the circumferential stiction of protection shield and machine shaft also constantly becomes larger, and play very well
Balanced action, and when both cooling down, magnitude of interference is gradually become smaller between the two, and disassembly also facilitates.In addition, protection shield
Material be 1Cr12 when, be heat-resistance stainless steel material, antiseptic property is good, long service life.
Claims (6)
1. a kind of safeguard structure of New energy automobile motor shaft end, including machine shaft, end cap and outside framework oil seal, the end cap and
Outside framework oil seal is set to the machine shaft and outside framework oil seal is located on the inside of the end cap, it is characterised in that: further includes protection shield
And plug screw, the protection shield interference are set to the shaft shoulder of the machine shaft and the protrusion end face of protection shield inner ring against shaft shoulder end
Face forms labyrinth structure between the protection shield and end cap, the protection shield opens up technique screw hole in the outside framework oil seal position,
The plug screw is twisted in the technique screw hole.
2. the safeguard structure of New energy automobile motor shaft end according to claim 1, it is characterised in that: the protection shield
Linear expansion coefficient is less than the linear expansion coefficient of the machine shaft.
3. the safeguard structure of New energy automobile motor shaft end according to claim 1 or 2, it is characterised in that: the labyrinth
Structure includes several labyrinth pawls of the radially spaced setting of the protection shield and several fans of the radially spaced setting of the end cap
Palace slot, several labyrinth pawls are located in several maze troughs.
4. the safeguard structure of New energy automobile motor shaft end according to claim 3, it is characterised in that: the labyrinth pawl and
Maze trough is respectively two, and the gap between the labyrinth pawl and maze trough is 0.4~0.8mm.
5. the safeguard structure of New energy automobile motor shaft end according to claim 4, it is characterised in that: the labyrinth pawl with
Gap between maze trough is 0.5mm.
6. the safeguard structure of New energy automobile motor shaft end according to claim 4 or 5, it is characterised in that: the motor
The shaft part length that shaft installs the protection shield is greater than 3~5mm of the protection shield thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822175034.0U CN209184363U (en) | 2018-12-24 | 2018-12-24 | The safeguard structure of New energy automobile motor shaft end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822175034.0U CN209184363U (en) | 2018-12-24 | 2018-12-24 | The safeguard structure of New energy automobile motor shaft end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209184363U true CN209184363U (en) | 2019-07-30 |
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ID=67377699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822175034.0U Active CN209184363U (en) | 2018-12-24 | 2018-12-24 | The safeguard structure of New energy automobile motor shaft end |
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| Country | Link |
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| CN (1) | CN209184363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838700A (en) * | 2020-12-30 | 2021-05-25 | 京信通信技术(广州)有限公司 | Antenna, motor package, power motor, package shell and output connecting shaft |
-
2018
- 2018-12-24 CN CN201822175034.0U patent/CN209184363U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112838700A (en) * | 2020-12-30 | 2021-05-25 | 京信通信技术(广州)有限公司 | Antenna, motor package, power motor, package shell and output connecting shaft |
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