CN112112935A - High protection starter reduction gear structure - Google Patents

High protection starter reduction gear structure Download PDF

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Publication number
CN112112935A
CN112112935A CN202010828213.9A CN202010828213A CN112112935A CN 112112935 A CN112112935 A CN 112112935A CN 202010828213 A CN202010828213 A CN 202010828213A CN 112112935 A CN112112935 A CN 112112935A
Authority
CN
China
Prior art keywords
wall
sleeve
ring
mounting
gear ring
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.)
Pending
Application number
CN202010828213.9A
Other languages
Chinese (zh)
Inventor
张丽君
高雪峰
李拥军
陈关关
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Electric Drive Systems Co Ltd
Original Assignee
Dongfeng Electric Drive Systems Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Dongfeng Electric Drive Systems Co Ltd filed Critical Dongfeng Electric Drive Systems Co Ltd
Priority to CN202010828213.9A priority Critical patent/CN112112935A/en
Publication of CN112112935A publication Critical patent/CN112112935A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/02—Gearing between starting-engines and started engines; Engagement or disengagement thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D41/00—Freewheels or freewheel clutches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/08—General details of gearing of gearings with members having orbital motion
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Gasket Seals (AREA)
  • General Details Of Gearings (AREA)

Abstract

The invention relates to a high-protection starter reducer structure which comprises an isolator, a sealing ring, an inner gear ring and a middle cover, wherein the isolator is arranged on the inner gear ring; one end of the isolator is provided with a sleeve, and the sleeve is eccentrically and rotatably connected with at least one planet wheel relative to the other end face of the isolator; the inner wall of the sealing ring is in interference fit with the outer wall of the sleeve, and the interference magnitude is 0.5-1.2 mm; a structural groove is formed in the part, matched with the sleeve, of the inner wall of the sealing ring, and lubricating grease is filled in the structural groove; the inner gear ring is fixed with the sealing ring, and the inner wall of the inner gear ring is provided with annular inner teeth meshed with the planet gears; the inner wall of the sealing ring is in interference fit with the outer wall of the sleeve, so that lubricating grease is prevented from being lost between the sealing ring and the sleeve, a proper amount of interference is provided, the running resistance of the isolator can be reduced, and the flexible running of the isolator is ensured.

Description

High protection starter reduction gear structure
Technical Field
The invention relates to the technical field of speed reducers, in particular to a high-protection starter speed reducer structure.
Background
The speed reducer is a key part of the starter and is responsible for reducing the rotating speed of the starter and transmitting torque, and parts such as a planet wheel, a gear ring, a needle bearing and the like are arranged in the speed reducer. The cavity of the speed reducer is filled with certain lubricating grease to ensure that the speed reducing mechanism is lubricated and runs well. The starter is also provided with a one-way clutch which is a transmission device on the automobile starter and used for transmitting the torque generated by the motor to the flywheel.
When the starter works, the isolator rotates in the circumferential direction and axially moves, so that lubricating grease in the reducer cavity is easy to lose. The loss of the lubricating grease can cause poor lubrication of the speed reducer, jamming in operation and cracking of the needle roller bearing and the planet wheel, thereby causing failure of the starter.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a high-protection starter reducer structure which can effectively prevent lubricating grease from losing and ensure the good running of a starter.
The technical scheme for solving the technical problems is as follows: a high-protection starter reducer structure comprises an isolator, a sealing ring, an inner gear ring and a middle cover; one end of the isolator is provided with a sleeve, and the sleeve is eccentrically and rotatably connected with at least one planet wheel relative to the other end face of the isolator;
the inner wall of the sealing ring is in interference fit with the outer wall of the sleeve;
a structural groove is formed in the part, matched with the sleeve, of the inner wall of the sealing ring, and lubricating grease is filled in the structural groove;
the inner gear ring is fixed with the sealing ring, and the inner wall of the inner gear ring is provided with annular inner teeth meshed with the planet gears.
The invention has the beneficial effects that: the inner wall of sealing washer and telescopic outer wall interference fit prevent that lubricating grease from losing between sealing washer and the sleeve.
On the basis of the technical scheme, the invention can be further improved as follows.
Furthermore, at least one mounting claw is arranged on the outer wall of the sealing ring, the mounting claws extend out in the direction far away from the sleeve, and mounting windows are formed in the mounting claws;
at least one mounting boss is arranged on the outer wall of the inner gear ring, and the mounting bosses are respectively inserted into the mounting windows; the planet gears are all meshed with the inner wall of the inner gear ring;
the middle cover is sleeved on the sealing ring and the inner gear ring; at least one groove is formed in the inner wall of the middle cover, and the mounting claws are arranged in the grooves respectively.
The beneficial effect of adopting the further scheme is that: through the cooperation of installation boss and installation claw, make the installation of ring gear and sealing washer more stable, reduce the influence that isolator axial float caused the sealing washer, reduce the loss of lubricating grease.
Further, the number of the mounting bosses, the mounting claws and the grooves is equal, and the mounting bosses, the mounting claws and the grooves are all arranged around the axis of the starter reducer structure at equal intervals and in a circumferential manner.
Furthermore, one end of the inner gear ring is tightly attached to the sealing ring, and the other end of the inner gear ring is flush with the end part of the mounting claw.
Furthermore, the inner wall of the middle cover is provided with a first spigot, and the first spigot is propped against the sealing ring.
Further, the outer diameters of the sealing ring and the inner gear ring are equal, and the outer wall of the sealing ring is in interference fit with the inner wall of the middle cover; and a second spigot is arranged on the inner wall of the middle cover and abuts against the inner gear ring.
Further, the starter reducer structure further comprises a gasket, and the gasket is arranged on one side, away from the sleeve, of the inner gear ring and the planet gear.
Furthermore, the inner wall of the middle cover is provided with a third spigot, and the third spigot is propped against the gasket.
Further, the mounting claws and the grooves are in interference fit.
Further, a sleeve boss is arranged at the end part of the sleeve, and the sleeve is sleeved on the sleeve boss; the inner wall of the sealing ring is in interference fit with the outer wall of the boss of the sleeve, and the interference magnitude is 0.5-1.2 mm.
The beneficial effect of adopting the further scheme is that: the running resistance of the isolator can be reduced, and the flexible running of the isolator is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a high-protection starter reducer structure according to the invention;
FIG. 2 is a three-dimensional cross-sectional structural view of a high-protection starter reducer structure according to the present invention;
FIG. 3 is a schematic structural view of the isolator of the present invention;
FIG. 4 is a schematic structural view of a seal ring of the present invention;
FIG. 5 is a schematic structural view of the ring gear of the present invention;
fig. 6 is a schematic structural view of the middle cap of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the one-way clutch comprises a one-way clutch body 11, a sleeve 12, a sleeve boss 13, an eccentric column 14, a planet wheel 2, a sealing ring 21, a mounting claw 22, a mounting window 23, a structural groove 3, an inner gear ring 31, a mounting boss 4, a middle cover 41, a groove 42, a first spigot 43, a second spigot 44, a third spigot 5 and a gasket.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, a high-protection starter reducer includes a one-way clutch 1, a seal ring 2, an inner gear ring 3, a middle cover 4, and a gasket 5. As shown in fig. 3, one end of the isolator 1 is sleeved with a sleeve 11, a sleeve boss 12 is arranged at the end of the sleeve 11, and four eccentric columns 13 are arranged at the top of the sleeve boss 12. The four eccentric columns 13 are arranged around the axis of the isolator at equal intervals and circumferentially, and each eccentric column 13 is rotatably sleeved with a planet wheel 14.
As shown in fig. 4, the inner wall of the seal ring 2 is provided with a structural groove 24, and in the present embodiment, the structural groove 24 is a double-lip U-shaped structural groove. The structural grooves 24 are internally coated with a certain amount of grease. The inner wall of sealing washer 2 and the outer wall interference fit of sleeve boss 12 prevent that lubricating grease from losing between sealing washer 2 and the sleeve boss 12. The interference magnitude t between the inner wall of the sealing ring 2 and the outer wall of the sleeve boss 12 is 0.5-1.2 mm, so that the running resistance of the isolator 1 is reduced, and the flexible running of the isolator 1 is ensured. Four mounting claws 21 are arranged on the outer wall of the sealing ring 2, and the mounting claws 21 are arranged in an equidistant and circumferential manner. The mounting claws 21 extend out in the direction away from the sleeve 11, and the mounting claws 21 are provided with mounting windows 22. The bottom of the mounting window 22 is flush with one side of the sealing ring 2.
As shown in fig. 5, the outer wall of the ring gear 3 is provided with four mounting bosses 31, and the four mounting bosses 31 are arranged circumferentially at equal intervals around the axis of the ring gear 3. The four mounting bosses 31 are respectively inserted into the four mounting windows in an interference manner, so that the inner gear ring 3 is coaxially and fixedly connected to the seal ring 2. All planet wheels 14 are meshed with the inner wall of the inner gear ring 3.
One side of the mounting boss 31 is flush with one side of the inner gear ring 3, and the height of the mounting boss 31 is smaller than that of the inner gear ring 3, so that when the inner gear ring 3 is mounted on the sealing ring 2, one side of the inner gear ring 3 is tightly attached to the sealing ring 2, and the other side of the inner gear ring 3 is flush with the end part of the mounting claw 21. And the outer diameter of the ring gear 3 is equal to the outer diameter of the seal ring 2.
As shown in fig. 6, the inner wall of the middle cover 4 is provided with four grooves 41, and the grooves 41 are arranged around the axis of the middle cover 4 at equal intervals. The inner wall of the middle cover 4 is also provided with a first spigot 42, a second spigot 43 and a third spigot 44 which are arranged in sequence. When the middle cover 4 is sleeved on the sealing ring 2 and the inner gear ring 3, the four mounting claws 21 are respectively arranged in the four mounting grooves 41 in an interference manner, so that lubricating grease is prevented from being lost from the four mounting claws 21 of the sealing ring 2. The first spigot 42 abuts against the seal ring 2, and the middle cover 4 and the seal ring 2 are in interference fit, so that lubricating grease is prevented from being lost from the outer wall of the seal ring 2. The middle cover 4 extrudes the sealing ring 2 inwards to enable the sealing ring 2 to deform and contract, and the second seam allowance 43 props against the inner gear ring 3.
A washer 5 is arranged on the side of the ring gear 3 and the planet wheels 14 remote from the sleeve 11, and the washer 5 cooperates with the third spigot 44. After the starter is assembled, the ring gasket 5 axially compresses the inner gear ring 3 and the sealing ring 2, so that a complete sealing cavity is formed in the speed reducer cavity, and the lubricating grease in the speed reducer is prevented from losing.
When the installation embodiment is adopted, the sealing ring 2 and the inner gear ring 3 are assembled into an inner gear ring assembly, and a certain amount of lubricating grease is coated in the structural groove 23 of the sealing ring 2; then the isolator 1 and the inner gear ring assembly are sequentially arranged in the middle cover 4, and the sealing ring 2 is in interference fit with the sleeve boss 12 and the inner wall of the middle cover 4; finally, the gasket 5 is arranged on the inner gear ring assembly, so that the reducer cavity forms a complete sealing cavity.
This embodiment simple structure, simple to operate to through the cooperation of installation boss 31 and installation claw 21, make ring gear 3 and sealing washer 2's installation more stable, reduce the influence that isolator 1 axial float caused sealing washer 2, reduce the loss of lubricating grease.
The above-mentioned embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A high-protection starter reducer structure is characterized by comprising an isolator, a sealing ring, an inner gear ring and a middle cover; one end of the isolator is provided with a sleeve, and the sleeve is eccentrically and rotatably connected with at least one planet wheel relative to the other end face of the isolator;
the inner wall of the sealing ring is in interference fit with the outer wall of the sleeve;
a structural groove is formed in the part, matched with the sleeve, of the inner wall of the sealing ring, and lubricating grease is filled in the structural groove;
the inner gear ring is fixed with the sealing ring, and the inner wall of the inner gear ring is provided with annular inner teeth meshed with the planet gears.
2. The high-protection starter reducer structure according to claim 1, wherein at least one mounting claw is arranged on an outer wall of the seal ring, the mounting claw extends out in a direction away from the sleeve, and mounting windows are formed in the mounting claws;
at least one mounting boss is arranged on the outer wall of the inner gear ring, and the mounting bosses are respectively inserted into the mounting windows; the planet gears are all meshed with the inner wall of the inner gear ring;
the middle cover is sleeved on the sealing ring and the inner gear ring; at least one groove is formed in the inner wall of the middle cover, and the mounting claws are arranged in the grooves respectively.
3. The high-protection starter reducer structure according to claim 2, wherein the number of the mounting bosses, the mounting claws and the grooves is equal and all are arranged circumferentially at equal intervals around an axis of the starter reducer structure.
4. The high-protection starter reducer structure according to claim 2, wherein one end of the inner gear ring is tightly attached to the seal ring, and the other end of the inner gear ring is flush with the end of the mounting claw.
5. The starter reducer structure with high protection according to claim 1, wherein the inner wall of the middle cover is provided with a first spigot, and the first spigot abuts against the sealing ring.
6. The high-protection starter reducer structure according to claim 1, wherein the outer diameters of the seal ring and the inner gear ring are equal, and the outer wall of the seal ring is in interference fit with the inner wall of the middle cover; and a second spigot is arranged on the inner wall of the middle cover and abuts against the inner gear ring.
7. The starter reducer structure according to claim 1, further comprising a washer disposed on a side of the inner ring gear and the planet gear away from the sleeve.
8. The starter reducer structure according to claim 7, wherein the inner wall of the middle cover is provided with a third spigot, and the third spigot abuts against the washer.
9. The high-protection starter reducer structure according to claim 2, wherein the mounting claw and the groove are in interference fit.
10. The high-protection starter reducer structure according to claim 1, wherein a sleeve boss is provided at an end of the sleeve, and the sleeve is sleeved on the sleeve boss; the inner wall of the sealing ring is in interference fit with the outer wall of the boss of the sleeve, and the interference magnitude is 0.5-1.2 mm.
CN202010828213.9A 2020-08-17 2020-08-17 High protection starter reduction gear structure Pending CN112112935A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010828213.9A CN112112935A (en) 2020-08-17 2020-08-17 High protection starter reduction gear structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010828213.9A CN112112935A (en) 2020-08-17 2020-08-17 High protection starter reduction gear structure

Publications (1)

Publication Number Publication Date
CN112112935A true CN112112935A (en) 2020-12-22

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010828213.9A Pending CN112112935A (en) 2020-08-17 2020-08-17 High protection starter reduction gear structure

Country Status (1)

Country Link
CN (1) CN112112935A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204828610U (en) * 2015-08-04 2015-12-02 芜湖杰诺瑞汽车电器系统有限公司 Prevent structure that reduction gears lubricating grease threw away
US20160025208A1 (en) * 2014-07-24 2016-01-28 Deere & Company Gear set lubrication system and method
CN108105368A (en) * 2016-11-25 2018-06-01 北京佩特来电器有限公司 A kind of planetary reduction gear system vibration damping sealing device and the starter including the device
CN109281789A (en) * 2017-07-20 2019-01-29 东风汽车电气有限公司 A kind of starter reduction device
CN208456757U (en) * 2018-07-11 2019-02-01 瑞安市飞普机车部件有限公司 A kind of one way device for ignitor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160025208A1 (en) * 2014-07-24 2016-01-28 Deere & Company Gear set lubrication system and method
CN204828610U (en) * 2015-08-04 2015-12-02 芜湖杰诺瑞汽车电器系统有限公司 Prevent structure that reduction gears lubricating grease threw away
CN108105368A (en) * 2016-11-25 2018-06-01 北京佩特来电器有限公司 A kind of planetary reduction gear system vibration damping sealing device and the starter including the device
CN109281789A (en) * 2017-07-20 2019-01-29 东风汽车电气有限公司 A kind of starter reduction device
CN208456757U (en) * 2018-07-11 2019-02-01 瑞安市飞普机车部件有限公司 A kind of one way device for ignitor

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Application publication date: 20201222