CN105757139A - Silent ratchet wheel and manufacturing method thereof - Google Patents
Silent ratchet wheel and manufacturing method thereof Download PDFInfo
- Publication number
- CN105757139A CN105757139A CN201410773394.4A CN201410773394A CN105757139A CN 105757139 A CN105757139 A CN 105757139A CN 201410773394 A CN201410773394 A CN 201410773394A CN 105757139 A CN105757139 A CN 105757139A
- Authority
- CN
- China
- Prior art keywords
- internal ring
- thin plate
- outer shroud
- wedging
- ratchet wheel
- 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
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Abstract
Provided is a silent ratchet wheel, comprising at least a wedging element, an outer ring, and an inner ring which is in the outer ring and coaxially arranged with the outer ring. The outer ring and the inner ring form a raceway of the wedging element and a wedging profile. The outer ring and the inner ring are formed by a plurality of sheets. The sheets are stacked together and are fixed together.
Description
Technical field
The present invention relates to a kind of silent ratchet wheel, it has: at least one wedging element, outer shroud, and internal ring coaxially arranged with outer shroud in outer shroud, and wherein, outer shroud and internal ring collectively form raceway and the wedging profile of wedging element.
Background technology
One typical example of this silent ratchet wheel is freewheel, wherein, when moment of torsion acts in one direction, wedging roller is stuck on wedging profile, thus can transmit moment of torsion, and when moment of torsion acts in the opposite direction, wedging roller is along rolling path rolling, thus does not transmit moment of torsion.Additionally, silent ratchet is used in so-called freewheel brake, wherein, when power introduces by unclamping element, wedging element can be passed through and transmit moment of torsion in the two directions, and when power is introduced by locking element, not transmit moment of torsion.
Generally, internal ring and outer shroud are all formed as the metallic object of monoblock, form wedging profile by respectively metallic object inner and outer circumferential surfaces being machined out (such as milling).Generally, subsequently raceway is carried out cure process.
Summary of the invention
It is an object of the invention to provide a kind of silent ratchet wheel that can save cost and manufacture method thereof.
In order to realize described purpose, according to the present invention, each outer shroud and internal ring are formed by multiple thin plates, and these thin plates are stacked with and are fixed together.
Metal parts need not be carried out the machining of costliness by the manufacture of this silent ratchet wheel, but internal ring and outer shroud can be formed simply by the thin plate of the folded stacking multiple flat steel sheets forms in ground.Such as can obtaining the thin plate with required wedging profile at low cost by punching press, when Sticking of Thin Steel Sheets During Pack Rolling is in desired position or when being locked in desired position by positive, the edge of each thin plate collectively forms wedging profile.The thin plate of internal ring and outer shroud can be manufactured in the following way: when manufacturing the annular sheet of outer shroud when only a small amount of waste of material, fall the center of this annular sheet by punching press and obtain steel plate, this steel plate is used as the blank of the thin plate of corresponding internal ring.
Manufacturing method according to the invention has the further advantage that the number having only to simply change stacking thin plate, just can be efficiently manufactured as the different silent ratchet of different load design.
Give the useful details of the present invention in the dependent claims.
Thin plate can be made to be locked by positive by following structure: such as, be inserted through the pin of thin plate；Or extrude on the surface of thin plate and be bonded on the boss in the corresponding recess on adjacent thin plate.
What freewheel brake needs were extra unclamps element, unclamps element and has pawl, and pawl stretches in the raceway between internal ring and outer shroud and for forcing wedging element to enter non-wedging position.Thus, the invention provides favourable feasibility, it may be assumed that formed by the one or more dishes being placed between thin plate and unclamp element.This simplify the manufacture unclamping element, and be simultaneously achieved favourable power distribution.
These bond structures when internal ring is connected on axle by key, the invention allows to manufacture at low cost bond structure on the inner peripheral surface of internal ring, because can be formed in the process of drawing quality steel sheet.
The invention provides the design that the one of this governor motion is particularly compact.Advantageously, the internal ring of two freewheel brakes and outer shroud are all made up of thin plate.Then, the thin plate of first freewheel brake internal ring is not only connected with each other, but also is connected with the element that unclamps of second freewheel brake, thus forming assembly.Advantageously, output element is driven to be formed by the axle connected by the internal ring of key and second freewheel brake and jointly rotate with this internal ring.The thin plate of the internal ring unclamping element and first freewheel brake of second freewheel brake can also coordinate with the keyway on axle, but has certain gap, thus the unclamping element and can carry out limited rotation relative to axle of second freewheel brake.This rotation is necessary for the wedging element of second freewheel brake being maintained at non-wedging position in regulating operation.Once this gap is exhausted, then axle (namely drive output element) just by second freewheel brake unclamp element and first freewheel brake internal ring directly drives.This makes it possible to stably transmit high torque and reliably support axle.
Detailed description of the invention
The present invention, each outer shroud and internal ring are formed by multiple thin plates, and these thin plates are stacked with and are fixed together.
Metal parts need not be carried out the machining of costliness by the manufacture of this silent ratchet wheel, but internal ring and outer shroud can be formed simply by the thin plate of the folded stacking multiple flat steel sheets forms in ground.Such as can obtaining the thin plate with required wedging profile at low cost by punching press, when Sticking of Thin Steel Sheets During Pack Rolling is in desired position or when being locked in desired position by positive, the edge of each thin plate collectively forms wedging profile.The thin plate of internal ring and outer shroud can be manufactured in the following way: when manufacturing the annular sheet of outer shroud when only a small amount of waste of material, fall the center of this annular sheet by punching press and obtain steel plate, this steel plate is used as the blank of the thin plate of corresponding internal ring.
Manufacturing method according to the invention has the further advantage that the number having only to simply change stacking thin plate, just can be efficiently manufactured as the different silent ratchet of different load design.
Give the useful details of the present invention in the dependent claims.
Thin plate can be made to be locked by positive by following structure: such as, be inserted through the pin of thin plate；Or extrude on the surface of thin plate and be bonded on the boss in the corresponding recess on adjacent thin plate.
What freewheel brake needs were extra unclamps element, unclamps element and has pawl, and pawl stretches in the raceway between internal ring and outer shroud and for forcing wedging element to enter non-wedging position.Thus, the invention provides favourable feasibility, it may be assumed that formed by the one or more dishes being placed between thin plate and unclamp element.This simplify the manufacture unclamping element, and be simultaneously achieved favourable power distribution.
These bond structures when internal ring is connected on axle by key, the invention allows to manufacture at low cost bond structure on the inner peripheral surface of internal ring, because can be formed in the process of drawing quality steel sheet.
The invention provides the design that the one of this governor motion is particularly compact.Advantageously, the internal ring of two freewheel brakes and outer shroud are all made up of thin plate.Then, the thin plate of first freewheel brake internal ring is not only connected with each other, but also is connected with the element that unclamps of second freewheel brake, thus forming assembly.Advantageously, output element is driven to be formed by the axle connected by the internal ring of key and second freewheel brake and jointly rotate with this internal ring.The thin plate of the internal ring unclamping element and first freewheel brake of second freewheel brake can also coordinate with the keyway on axle, but has certain gap, thus the unclamping element and can carry out limited rotation relative to axle of second freewheel brake.This rotation is necessary for the wedging element of second freewheel brake being maintained at non-wedging position in regulating operation.Once this gap is exhausted, then axle (namely drive output element) just by second freewheel brake unclamp element and first freewheel brake internal ring directly drives.This makes it possible to stably transmit high torque and reliably support axle.
Claims (3)
1. a silent ratchet wheel, including: at least one wedging element, outer shroud, and internal ring, it is coaxially arranged with described outer shroud in described outer shroud, wherein, described outer shroud and described internal ring collectively form raceway and the wedging profile of described wedging element, it is characterized in that, described outer shroud and described internal ring are all formed by multiple thin plates, and described thin plate is stacked with and is fixed together.
2. silent ratchet wheel as claimed in claim 1, wherein, described outer shroud is concordant mutually with the respective thin plate of described internal ring and has identical thickness.
3. silent ratchet wheel as claimed in claim 1 or 2, wherein, described thin plate is locked to each other by positive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410773394.4A CN105757139A (en) | 2014-12-13 | 2014-12-13 | Silent ratchet wheel and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410773394.4A CN105757139A (en) | 2014-12-13 | 2014-12-13 | Silent ratchet wheel and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105757139A true CN105757139A (en) | 2016-07-13 |
Family
ID=56336428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410773394.4A Pending CN105757139A (en) | 2014-12-13 | 2014-12-13 | Silent ratchet wheel and manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105757139A (en) |
-
2014
- 2014-12-13 CN CN201410773394.4A patent/CN105757139A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |