CN203686032U - External gear and internal pawl swing mechanism - Google Patents
External gear and internal pawl swing mechanism Download PDFInfo
- Publication number
- CN203686032U CN203686032U CN201320573026.6U CN201320573026U CN203686032U CN 203686032 U CN203686032 U CN 203686032U CN 201320573026 U CN201320573026 U CN 201320573026U CN 203686032 U CN203686032 U CN 203686032U
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- China
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- ratchet
- gear
- swing mechanism
- internal
- external gear
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Abstract
The utility model relates to a ratchet mechanism, in particular to an external gear and internal pawl swing mechanism. The mechanism comprises a first revolving shaft and a second revolving shaft, wherein the first revolving shaft is connected with a sector gear in a bell and spigot joint manner; the sector gear is connected with a rocking bar capable of swinging by taking the first revolving shaft as the axis; the second revolving shaft is connected with a ratchet in the bell and spigot joint manner; a gear is connected with the exterior of the ratchet in the bell and spigot joint manner; the internal surface of the gear is provided with pawls and internal splines matched with the pawls; the external surface of the gear is provided with external teeth in engaged transmission with the sector gear; the ratchet mechanism is provided with at least three pawls; the pawls are evenly distributed along the outer annulus of the ratchet. Internal pawl driving is adopted and at least three pawls are arranged in the external gear and internal pawl swing mechanism provided by the utility model, so that the running accuracy is high, the bearing capacity is strong, and the torque is high; moreover, pressure borne by the internal splines can be reduced, and therefore, noise and vibration during the transmission are reduced, and the service life of the mechanism is prolonged.
Description
Technical field
The utility model relates to a kind of ratchet mechanism, especially a kind of external gear, interior ratchet swing mechanism.
Background technique
A kind of one-way intermittent motion mechanism that ratchet mechanism is made up of ratchet and pawl, is generally used for the unidirectional intermittent rotary that the periodic oscillations of rocking bar is converted to ratchet.Traditional detent mechanism comprises 1～2 interior ratchet, and the pressure therefore bearing on ratchet, teeth groove in the time of transmission is larger, and bearing capacity is little, and kinematic accuracy is poor, and with noise and vibration.
Model utility content
It is stressed that the utility model provides one to reduce ratchet, improves running precision and stability, the external gear that reduces noise and vibrations, interior ratchet swing mechanism.
To achieve these goals, the utility model adopts following technological scheme:
The utility model comprises the first rotating shaft and the second rotating shaft, the first described rotating shaft is socketed a tooth sector, it can the first rotating shaft be the rocking bar that axle swings that described tooth sector connects one, the second described rotating shaft is socketed a ratchet, the outer socket of ratchet one gear, described gear internal surface is provided with ratchet and the internal spline with click-fit, and gear outer surface is provided with the external tooth with tooth sector engagement driving, described ratchet mechanism is at least provided with three ratchets, and described ratchet is uniformly distributed along ratchet excircle.
Preferably, described ratchet surface is provided with the ratchet of counterclockwise skew.
Preferably, described ratchet is extended counterclockwise obliquely upward by internal spline bottom.
Preferably, described ratchet comprises by the internal spline extended pawl arm in bottom and is located at the ratchet head in internal spline.
Preferably, described ratchet head is cylindrical.
Preferably, described internal spline is formed by the inside indentation of gear internal surface.
Preferably, the bottom land of described internal spline is along ratchet bearing of trend deflection.
Preferably, described gear internal surface is provided with four internal splines and four ratchets.
Owing to having adopted said structure, in external gear of the present utility model, the inner employing of interior ratchet swing mechanism, ratchet drives and is provided with at least three ratchets, running precision is high, bearing capacity is strong, moment of torsion is large, and the pressure that can reduce to bear on teeth groove, noise and vibrations while reducing transmission, the working life of increase mechanism.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's Facad structure schematic diagram;
Fig. 2 be the utility model embodiment look up cross section structure schematic diagram.
In figure: the first rotating shaft 1;
The second rotating shaft 2;
Tooth sector 3;
Rocking bar 4;
Ratchet 5, ratchet 51;
Gear 6, ratchet 61, pawl arm 611, ratchet head 612, internal spline 62, external tooth 63, bottom land 613.
Embodiment
As Figure 1-Figure 2, the external gear of the present embodiment, interior ratchet swing mechanism comprises the first rotating shaft 1 and the second rotating shaft 2, the first described rotating shaft 1 is socketed a tooth sector 3, it can the first rotating shaft 1 be the rocking bar 4 that axle swings that described tooth sector 3 connects one, the second described rotating shaft 2 is socketed a ratchet 5, outer socket one gear 6 of ratchet 5, the internal spline 62 that described gear 6 internal surfaces are provided with ratchet 61 and coordinate with ratchet 61, gear 6 outer surfaces are provided with the external tooth 63 with tooth sector 3 engagement driving, described ratchet 5 is at least provided with three ratchets 61, described ratchet 61 is uniformly distributed along gear 6 inner circumferences.
Concrete, in the present embodiment, because object is to clockwise rotate the intermittence that the swing of rocking bar 4 is converted to ratchet 5, so described ratchet 5 surfaces are provided with the ratchet 51 of counterclockwise skew.
Accordingly, in the present embodiment, described ratchet 61 is extended counterclockwise obliquely upward by the gullet base of ratchet 51.
In order to make parts reach better matching relationship, in the present embodiment, described ratchet 61 comprises by the extended pawl arm 611 of gullet base of ratchet 51 and is located at the ratchet head 612 of pawl arm 611 ends.
Accordingly, in the present embodiment, described ratchet head 612 is cylindrical.
In addition, in the present embodiment, described internal spline 62 is formed by the inside indentation of gear 6 internal surface.
In order to make to realize and better coordinating between internal spline and ratchet, in the present embodiment, the bottom land 613 of described internal spline 62 is along ratchet bearing of trend deflection.
In the present embodiment, described gear 6 internal surfaces are provided with four ratchets and four internal splines 62.
When rocking bar 4 counter-clockwise swing, drive tooth sector 2 to turn over counterclockwise several angle, gear 6 engages with tooth sector 2, when tooth sector 2 rotates counterclockwise, gear 6 clockwise rotates, ratchet 61 inserts in the ratchet 51 of ratchet 5, ratchet 5 and then turns over several angle, thereby drives the second rotating shaft 2 to turn over several angle.
In the time that rocking bar 4 swings clockwise, drive tooth sector 2 to turn over clockwise several angle, gear 6 engages with tooth sector 2, and when tooth sector 2 rotates counterclockwise, gear 6 clockwise rotates, now ratchet 61 can slip on the ratchet of ratchet 5 51, ratchet 51 transfixions.In the time that rocking bar is made continuous reciprocally swinging, ratchet 51 is done unidirectional intermittent movement, thereby drives output shaft the second rotating shaft to do unidirectional intermittent movement.
Especially, be provided with 4 ratchets in the present embodiment, running precision is high, and bearing capacity is strong, and moment of torsion is large, and the pressure that can reduce to bear on teeth groove, increases the working life of mechanism.This mechanism can many groups be used in the first rotating shaft, output shaft the second rotating shaft, makes the second rotating shaft do to rotate continuously.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (8)
1. external gear, interior ratchet swing mechanism, it is characterized in that: comprise the first rotating shaft and the second rotating shaft, the first described rotating shaft is socketed a tooth sector, it can the first rotating shaft be the rocking bar that axle swings that described tooth sector connects one, the second described rotating shaft is socketed a ratchet, the outer socket of ratchet one gear, described gear internal surface is provided with ratchet and the internal spline with click-fit, gear outer surface is provided with the external tooth with tooth sector engagement driving, described ratchet mechanism is at least provided with three ratchets, and described ratchet is uniformly distributed along ratchet excircle.
2. external gear as claimed in claim 1, interior ratchet swing mechanism, is characterized in that: described ratchet surface is provided with the ratchet of counterclockwise skew.
3. external gear as claimed in claim 2, interior ratchet swing mechanism, is characterized in that: described ratchet is extended counterclockwise obliquely upward by internal spline bottom.
4. external gear as claimed in claim 3, interior ratchet swing mechanism, is characterized in that: described ratchet comprises by the internal spline extended pawl arm in bottom and is located at the ratchet head in internal spline.
5. external gear as claimed in claim 4, interior ratchet swing mechanism, is characterized in that: described ratchet head is cylindrical.
6. external gear as claimed in claim 5, interior ratchet swing mechanism, is characterized in that: described internal spline is formed by the inside indentation of gear internal surface.
7. external gear as claimed in claim 6, interior ratchet swing mechanism, is characterized in that: the bottom land of described internal spline is along ratchet bearing of trend deflection.
8. external gear as claimed in claim 7, interior ratchet swing mechanism, is characterized in that: described gear internal surface is provided with four internal splines and four ratchets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573026.6U CN203686032U (en) | 2013-09-16 | 2013-09-16 | External gear and internal pawl swing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320573026.6U CN203686032U (en) | 2013-09-16 | 2013-09-16 | External gear and internal pawl swing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203686032U true CN203686032U (en) | 2014-07-02 |
Family
ID=51007937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320573026.6U Expired - Fee Related CN203686032U (en) | 2013-09-16 | 2013-09-16 | External gear and internal pawl swing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203686032U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486214A (en) * | 2013-09-16 | 2014-01-01 | 姜赛男 | External gear and internal pawl swing mechanism |
| CN111547639A (en) * | 2020-05-12 | 2020-08-18 | 王利 | Manual elevating gear of building engineering |
-
2013
- 2013-09-16 CN CN201320573026.6U patent/CN203686032U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486214A (en) * | 2013-09-16 | 2014-01-01 | 姜赛男 | External gear and internal pawl swing mechanism |
| CN111547639A (en) * | 2020-05-12 | 2020-08-18 | 王利 | Manual elevating gear of building engineering |
| CN111547639B (en) * | 2020-05-12 | 2021-07-16 | 天长市千盛建设有限公司 | Manual elevating gear of building engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 Termination date: 20170916 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |