CN105804912B - A kind of ratchet type clutch of gas starter motor - Google Patents
A kind of ratchet type clutch of gas starter motor Download PDFInfo
- Publication number
- CN105804912B CN105804912B CN201610320813.8A CN201610320813A CN105804912B CN 105804912 B CN105804912 B CN 105804912B CN 201610320813 A CN201610320813 A CN 201610320813A CN 105804912 B CN105804912 B CN 105804912B
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- CN
- China
- Prior art keywords
- ratchet wheel
- ratchet
- output shaft
- movable sleeve
- plane
- 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.)
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Classifications
-
- 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
- F02N15/04—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears
- F02N15/06—Gearing between starting-engines and started engines; Engagement or disengagement thereof the gearing including disengaging toothed gears the toothed gears being moved by axial displacement
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of ratchet type clutch of gas starter motor, it is related to isolator technical field.Bottom ratchet wheel is provided with endoporus, inner face is inclined-plane, bottom ratchet wheel inner hole sleeve is on output shaft and is welded and fixed, cavity is formed between the cylindrical endoporus with bottom ratchet wheel of output shaft, movable sleeve one end also is provided with inclined-plane, equally it is placed in cavity, cavity is built with along the several steel balls of output shaft circumference, it is placed between bottom ratchet wheel and the inclined-plane of movable sleeve two, bottom ratchet wheel inner face is arranged to inclined-plane, upper, steel ball and movable sleeve are provided with bottom ratchet wheel inner chamber, inclined-plane of the centrifugal force through movable sleeve produced using steel ball during reverse drive changes into axial force to overcome spring force, upper ratchet is pushed open by movable sleeve, make, bottom ratchet wheel ratchet when high-speed reverse is driven is contactless, spring is without friction, protect ratchet mechanism and pressuring spring, on only being produced in motion process, rolling friction between the inclined-plane of bottom ratchet wheel two and steel ball, wear and tear and reduce compared with sliding friction, life-span improves.
Description
Technical field
The present invention relates to a kind of ratchet type clutch of gas starter motor, belong to isolator technical field.
Background technology
Ratchet type clutch is the common components in engine air starter motor, and it has transmission moment of torsion big, and forward direction transmission is not
The features such as easily skidding.When gas starter motor starts engine, isolator forward direction transmission, motor pinion drives engine flywheel tooth
Circle is rotated, and when little gear does not depart from also with flywheel ring gear after engine ignition operating, then reverse drive occurs, at this moment ratchet is beaten
It is sliding, driving-chain is cut off, to protect gas starter motor.To ensure that engine is started successfully, reverse drive must occur.Instead
Direct high-speed friction can be produced to the ratchet of isolator two during transmission, excessive reverse drive can also be such that ratchet pressuring spring produces
The high-frequency compression vibration of raw up to ten thousand times per minute, this high-speed friction and dither make ratchet wear and tear rapidly, pressuring spring
Fatigue fracture quickly, has had a strong impact on the service life of ratchet type clutch.Therefore, Chinese invention patent（Application number
201420501403X）A kind of " isolator device of automobile-used gas starter motor " is disclosed, increase is provided between being included in ratchet
Bearing shell a4 and bush seat a5.In reverse drive, bearing shell a4 centrifugal force produces axial thrust to bush seat a5, so as to push spine open
Tooth separates two ratchets on wheel, it is to avoid the friction of ratchet, preferably solves above mentioned problem.But this method can make in implementing again
The sliding friction of high speed is produced between bearing shell and bush seat, allows bearing shell to wear and tear quickly and loses effect（As shown in Figure 1 and Figure 2）.
The content of the invention
In view of the above-mentioned problems, the technical problem to be solved in the present invention is to provide a kind of Ratcheting one-way of gas starter motor
Device.
The ratchet type clutch of gas starter motor of the present invention, it comprising output shaft 1, bottom ratchet wheel 6,
Steel ball 4, movable sleeve 5, upper ratchet 7, splined shaft 17 and spring 20, bottom ratchet wheel 6 are provided with endoporus, and inner face is inclined-plane,
The inner hole sleeve of bottom ratchet wheel 6 is on output shaft 1 and is welded and fixed, and cavity is formed between the cylindrical endoporus with bottom ratchet wheel 6 of output shaft 1, living
One end of dynamic set 5 also is provided with inclined-plane, being equally placed in cavity, and is in axial sliding connection with output shaft 1, and cavity is exported built with edge
Several steel balls 4 of axle circumference, are placed between bottom ratchet wheel 6 and two inclined-planes of movable sleeve 5, the other end of movable sleeve 5 is placed in
In the stepped hole of upper ratchet 7.
Preferably, described upper ratchet 7 is spline housing form, endoporus is enclosed on splined shaft provided with one section of internal thread spline
On.
Preferably, being again provided with step on described upper ratchet 7 is cylindrical, it is equipped between the step and the step of splined shaft
Spring 20, and upper ratchet 7, the end face of bottom ratchet wheel 6 are equipped with ratchet, are mutually twisted.
Beneficial effects of the present invention：The drawbacks of it can overcome prior art, inclined-plane is arranged to by bottom ratchet wheel inner face,
Steel ball and movable sleeve are provided with upper and lower ratchet inner chamber, the centrifugal force produced using steel ball during reverse drive is through the oblique of movable sleeve
Face changes into axial force to overcome spring force, is pushed open upper ratchet by movable sleeve, makes upper and lower ratchet spine when high-speed reverse is driven
Tooth is contactless, spring is without friction, so that ratchet mechanism and pressuring spring are protected, more it is beneficial that the mechanism is in motion process
In only produce rolling friction between the upper and lower inclined-plane of ratchet two and steel ball, abrasion is greatly reduced compared with sliding friction so that
Isolator application adaptability is stronger, and service life is also greatly improved.
Brief description of the drawings：
For ease of explanation, the present invention is described in detail by following specific implementations and accompanying drawing.
Structure cut-away view when Fig. 1 is normally driven for existing isolator in background technology；
Fig. 2 is the structure cut-away view in background technology during existing isolator high-speed reverse transmission；
Structure cut-away view when Fig. 3 is normally driven for isolator in the present invention；
Structure cut-away view when Fig. 4 is driven for isolator high-speed reverse in the present invention.
Embodiment：
As shown in Figure 3-4, present embodiment uses following technical scheme：It comprising output shaft 1,
Bottom ratchet wheel 6, steel ball 4, movable sleeve 5, upper ratchet 7, splined shaft 17 and spring 20, bottom ratchet wheel 6 are provided with endoporus, inner face
For inclined-plane, the inner hole sleeve of bottom ratchet wheel 6 is on output shaft 1 and is welded and fixed, and is formed between the cylindrical endoporus with bottom ratchet wheel 6 of output shaft 1
Cavity, one end of movable sleeve 5 also is provided with inclined-plane, being equally placed in cavity, and is in axial sliding connection with output shaft 1, and cavity is built-in
Have several steel balls 4 along output shaft circumference, be placed between bottom ratchet wheel 6 and two inclined-planes of movable sleeve 5, movable sleeve 5 it is another
One end is placed in the stepped hole of ratchet 7.
Preferably, described upper ratchet 7 is spline housing form, endoporus is enclosed on splined shaft provided with one section of internal thread spline
On.
Preferably, being again provided with step on described upper ratchet 7 is cylindrical, it is equipped between the step and the step of splined shaft
Spring 20, and upper ratchet 7, the end face of bottom ratchet wheel 6 are equipped with ratchet, are mutually twisted.
The operation principle of present embodiment is：Because motor output shaft rotating speed is inadequate during the forward direction transmission of this isolator
Height, the axial thrust produced by the centrifugal force of steel ball 4 is not enough to overcome the pressure of spring 20, and institute's above ratchet 7 and bottom ratchet wheel 6 are engaged
Closely, isolator can smoothly transmit rotating speed and moment of torsion, and when there is the reverse drive of high speed, engine speed exceedes more than idling
When, output shaft high-speed rotation makes steel ball 4 produce larger centrifugal force, and steel ball 4 is moved radially under the action of the centrifugal force, and passes through work
The inclined-plane of dynamic set 5 produces axial thrust load, and this axial thrust load promotes upper ratchet 7 to move axially, is allowed to and bottom ratchet wheel through movable sleeve 5
6 depart from, and this process has been merely creating rolling friction, and abrasion is greatly reduced compared with sliding friction.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (2)
1. a kind of ratchet type clutch of gas starter motor, it is characterised in that：It includes output shaft (1), bottom ratchet wheel (6), steel ball
(4), movable sleeve (5), upper ratchet (7), splined shaft (17) and spring (20), bottom ratchet wheel (6) are provided with endoporus, and inner face is inclined-plane,
Bottom ratchet wheel (6) inner hole sleeve is on output shaft (1) and is welded and fixed, in the cylindrical formation between bottom ratchet wheel (6) endoporus of output shaft (1)
Cavity, one end of movable sleeve (5) also is provided with inclined-plane, being equally placed in cavity, and is in axial sliding connection with output shaft (1), cavity
It is living between two inclined-planes for being placed in bottom ratchet wheel (6) and movable sleeve (5) built with several steel balls (4) along output shaft circumference
The other end of dynamic set (5) is placed in the stepped hole of ratchet (7), and described upper ratchet (7) is spline housing form, and endoporus is provided with one
Section internal thread spline, is enclosed on splined shaft, is again provided with step on described upper ratchet (7) is cylindrical, the step and splined shaft
Spring (20) is housed between step, and upper ratchet (7), bottom ratchet wheel (6) end face are equipped with ratchet, are mutually twisted.
2. a kind of ratchet type clutch of gas starter motor according to claim 1, it is characterised in that：This isolator is positive
Because motor output shaft rotating speed is not high enough during transmission, the axial thrust produced by steel ball (4) centrifugal force is not enough to overcome spring
(20) pressure, institute's above ratchet (7) and bottom ratchet wheel (6) occlusion are close, and isolator can smoothly transmit rotating speed and moment of torsion, when going out
The existing reverse drive of high speed, when engine speed is exceeded more than idling, output shaft high-speed rotation make steel ball (4) produce it is larger from
Mental and physical efforts, steel ball (4) is moved radially under the action of the centrifugal force, and produces axial thrust load, this axial direction by the inclined-plane of movable sleeve (5)
Component is moved axially through ratchet (7) in movable sleeve (5) promotion, is allowed to depart from bottom ratchet wheel (6), this process has been merely creating rolling
Friction, abrasion is greatly reduced compared with sliding friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320813.8A CN105804912B (en) | 2016-05-16 | 2016-05-16 | A kind of ratchet type clutch of gas starter motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610320813.8A CN105804912B (en) | 2016-05-16 | 2016-05-16 | A kind of ratchet type clutch of gas starter motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105804912A CN105804912A (en) | 2016-07-27 |
| CN105804912B true CN105804912B (en) | 2017-11-07 |
Family
ID=56451175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610320813.8A Active CN105804912B (en) | 2016-05-16 | 2016-05-16 | A kind of ratchet type clutch of gas starter motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105804912B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111620109B (en) * | 2020-06-04 | 2021-06-15 | 深圳市微组半导体科技有限公司 | Automatic switching device for suction nozzle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4322985A (en) * | 1980-03-20 | 1982-04-06 | Facet Enterprises, Inc. | Engine starter with an overrunning clutch device |
| CN2386252Y (en) * | 1998-11-02 | 2000-07-05 | 徐模宏 | Driving axle for bicycle |
| CN202914222U (en) * | 2012-11-24 | 2013-05-01 | 康灵集团有限公司 | Improved isolator structure of starter |
| CN204024890U (en) * | 2014-09-02 | 2014-12-17 | 毅联实业(上海)有限公司 | The isolator device of automobile-used gas starter motor |
-
2016
- 2016-05-16 CN CN201610320813.8A patent/CN105804912B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4322985A (en) * | 1980-03-20 | 1982-04-06 | Facet Enterprises, Inc. | Engine starter with an overrunning clutch device |
| CN2386252Y (en) * | 1998-11-02 | 2000-07-05 | 徐模宏 | Driving axle for bicycle |
| CN202914222U (en) * | 2012-11-24 | 2013-05-01 | 康灵集团有限公司 | Improved isolator structure of starter |
| CN204024890U (en) * | 2014-09-02 | 2014-12-17 | 毅联实业(上海)有限公司 | The isolator device of automobile-used gas starter motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105804912A (en) | 2016-07-27 |
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