CN204168040U - Low-loss machine shaft seal - Google Patents
Low-loss machine shaft seal Download PDFInfo
- Publication number
- CN204168040U CN204168040U CN201420612051.5U CN201420612051U CN204168040U CN 204168040 U CN204168040 U CN 204168040U CN 201420612051 U CN201420612051 U CN 201420612051U CN 204168040 U CN204168040 U CN 204168040U
- Authority
- CN
- China
- Prior art keywords
- seal
- machine shaft
- axial bore
- trapezoidal groove
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 210000002421 cell wall Anatomy 0.000 claims abstract description 4
- 230000005662 electromechanics Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 21
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 238000007789 sealing Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000000446 fuel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of low-loss machine shaft seal, relates to technical field of motors, and what solve is the technical problem reducing electromechanics loss and noise.The seal is cylindricality oil resistant rubber body, its axle center offers the through axial bore of axially passing through energy, the outer peripheral face of seal have circumferentially around its central axis one enclose and trapezoidal groove, the angle of the bottom land of this trapezoidal groove and its both sides cell wall is obtuse angle, and the aperture, side of through axial bore is the tubaeform mouth of radial dilatation.The seal that the utility model provides, is nested with and uses on machine shaft.
Description
Technical field
The utility model relates to motor technology, particularly relates to a kind of technology of low-loss machine shaft seal.
Background technology
The forward and backward end cap of motor is all processed with a shaft outlet hole passed for the rotating shaft of rotor, in order to ensure the rotation of rotor, certain interval will be had between the shaft outlet hole that front and back ends covers and the rotating shaft of rotor, enter motor cavity in order to avoid the foreign matter such as the globule, dust in the external world from this gap location and damage motor, also need seal is installed between forward and backward end cap and the rotating shaft of rotor, this seal requires the normal rotation that namely can not hinder rotating shaft, and foreign matter can be stoped again to enter motor cavity.
At present, general employing outside framework oil seal (as shown in Figure 2) in the field of business, it is formed primarily of iron hoop 21 and the oil-resistant rubber ring 22 that is coated on iron hoop 21 outer peripheral face, the rotating shaft of rotor is passed from annular distance in iron hoop 21, both are interference fit, iron hoop 21 is made to hold rotating shaft tightly, oil-resistant rubber ring 22 two sides of iron hoop 21 outer peripheral face are then adjacent to the surface, oil sealing position of electric motor end cap, thus realize sealing, because the periphery of outside framework oil seal is for having flexible oil-resistant rubber ring 22, the rotation of rotor can not be hindered.But the oil sealing position that this outside framework oil seal is adjacent to electric motor end cap due to oil-resistant rubber ring 22 two sides is surperficial, oil-resistant rubber ring 22 has larger pretightning force, thus between oil-resistant rubber ring 22 and surface, oil sealing position, there is larger friction, thus cause larger mechanical loss, this is when current motor efficiency requires more and more higher, it is the very large factor hindering electric efficiency to promote, and the trapped fuel space of oil sealing position is also less, the lubricating oil being coated in oil sealing position can only be very thin one deck, after motor runs a period of time, lubricating oil will soon be killed, thus generation dry friction, cause sharp-pointed noise, very ear-piercing.
Utility model content
For the defect existed in above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of low-loss machine shaft seal that can reduce electromechanics loss and noise.
In order to solve the problems of the technologies described above, a kind of low-loss machine shaft seal provided by the utility model, it is characterized in that: the seal is cylindricality oil resistant rubber body, its axle center offers the through axial bore of axially passing through energy, the outer peripheral face of seal have circumferentially around its central axis one enclose and trapezoidal groove, the angle of the bottom land of this trapezoidal groove and its both sides cell wall is obtuse angle, and the aperture, side of through axial bore is the tubaeform mouth of radial dilatation.
The low-loss machine shaft seal that the utility model provides, because the outer peripheral face of seal has trapezoidal groove, and the aperture, side of through axial bore is tubaeform mouth, the pretightning force of seal is very little, seal and surface, oil sealing position do not rub substantially, and thus frictional dissipation is also very little, and the friction noise of generation is also little, and reserved trapped fuel space is also comparatively large, can place more lubricating oil.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the low-loss machine shaft seal of the utility model embodiment;
Fig. 2 is the cutaway view of existing outside framework oil seal.
Embodiment
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiment of the present utility model, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar change thereof, all should list protection range of the present utility model in.
As shown in Figure 1, a kind of low-loss machine shaft seal that the utility model embodiment provides, it is characterized in that: the seal is cylindricality oil resistant rubber body, its axle center offers the through axial bore of axially passing through energy, the outer peripheral face of seal have circumferentially around its central axis one enclose and trapezoidal groove, the angle of the bottom land of this trapezoidal groove and its both sides cell wall is obtuse angle, and the aperture, side of through axial bore is the tubaeform mouth of radial dilatation.
The utility model embodiment is nested with and uses on machine shaft, during installation, machine shaft is passed from the through axial bore in seal axle center, the hole wall of through axial bore holds machine shaft tightly, make seal can follow machine shaft High Rotation Speed together, the both ends of the surface (i.e. the end face at through axial bore two ends) of oil resistant rubber body are then adjacent to the surface, oil sealing position of electric motor end cap, because the outer peripheral face of seal has trapezoidal groove, and the aperture, side of through axial bore is tubaeform mouth, the pretightning force of seal is very little (substantially not having), seal and surface, oil sealing position do not rub substantially, thus frictional dissipation is also very little, the friction noise produced is also little, and reserved trapped fuel space is also larger, more lubricating oil can be placed.
Claims (1)
1. a low-loss machine shaft seal, it is characterized in that: the seal is cylindricality oil resistant rubber body, its axle center offers the through axial bore of axially passing through energy, the outer peripheral face of seal have circumferentially around its central axis one enclose and trapezoidal groove, the angle of the bottom land of this trapezoidal groove and its both sides cell wall is obtuse angle, and the aperture, side of through axial bore is the tubaeform mouth of radial dilatation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612051.5U CN204168040U (en) | 2014-10-22 | 2014-10-22 | Low-loss machine shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420612051.5U CN204168040U (en) | 2014-10-22 | 2014-10-22 | Low-loss machine shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204168040U true CN204168040U (en) | 2015-02-18 |
Family
ID=52541689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420612051.5U Expired - Lifetime CN204168040U (en) | 2014-10-22 | 2014-10-22 | Low-loss machine shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204168040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152751A (en) * | 2019-05-24 | 2019-08-23 | 南华大学 | A kind of electrical pipette rifle |
-
2014
- 2014-10-22 CN CN201420612051.5U patent/CN204168040U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152751A (en) * | 2019-05-24 | 2019-08-23 | 南华大学 | A kind of electrical pipette rifle |
| CN110152751B (en) * | 2019-05-24 | 2024-05-17 | 南华大学 | Electric pipette |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |