CN1072246A - A kind of ratchet mechanism - Google Patents
A kind of ratchet mechanism Download PDFInfo
- Publication number
- CN1072246A CN1072246A CN 91109412 CN91109412A CN1072246A CN 1072246 A CN1072246 A CN 1072246A CN 91109412 CN91109412 CN 91109412 CN 91109412 A CN91109412 A CN 91109412A CN 1072246 A CN1072246 A CN 1072246A
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- ratchet
- driving disc
- recessed
- protruding
- active line
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Abstract
A kind of ratchet mechanism, particularly a kind of ratchet mechanism that is applicable in the loom let off motion, it is made up of ratchet, ratchet, driving disc, axle and spring, driving disc radius (or shaft axis) and ratchet are in a certain angle, and the active line of the pressure angle of ratchet, ratchet flank profil is the equal value within the specific limits of projected length on circumference.Compared with prior art, the present invention has loss of transmission accuracy height, traverse and contact stress is little, wear resistance is good advantage.
Description
The present invention relates to a kind of ratchet mechanism, especially a kind of ratchet mechanism that is applicable in the loom let off motion.
Existing ratchet mechanism, its composition comprises ratchet, ratchet, driving disc and axle, the working surface of ratchet and ratchet and ratchet radius are on same plane, transmission accuracy is low, contact stress and traverse loss are all bigger, in loom let off motion or other machinery, use, often cause the unequal adverse consequences of warp tension, for reducing kinetic energy rejection, people often adopt the way that increases the ratchet number of teeth or number of detents, but owing to be subjected to the restriction of quantity and shape thereof, contact stress is still bigger, and wear-resisting property and transmission accuracy are difficult to further raising.
It is little to the purpose of this invention is to provide a kind of traverse loss and contact stress, the transmission accuracy height, and the ratchet mechanism that wear resistance is good especially is applicable to the ratchet mechanism in the loom let off motion.
Ratchet mechanism of the present invention comprises driving disc and axle, and its improvements are: ratchet and ratchet contacting point linear velocity V direction and stressed F direction are the angle α less than 35 °, and ratchet and driving disc radius are the angle β less than 15 °, and alpha-beta≤20 °; For the traverse loss is dropped to minimum, the corresponding garden Zhou Changdu of the projected length P of ratchet flank profil active line of the present invention on circumference preferably satisfies formula P 〉=π d/zn, (π is a Ratio of the circumference of a circle to its diameter, and z is the ratchet number, and n is a number of detents, and d is the ratchet diameter).
Ratchet of the present invention count z, number of detents n all can be in 2～100 value, but ratchet is counted z and is preferably got prime number.
The shape of ratchet flank profil active line of the present invention is preferably curve (protruding, recessed), also can be broken line (protruding, recessed) or straight line.The shape of the active line of ratchet pawl exterior feature is preferably curve (protruding, recessed), also can be broken line (protruding, recessed) or straight line.
The wide active line of above-mentioned flank profil active line and pawl can be used in combination mutually but have at least one to get curve, and is best for the two all gets curve and protruding recessed.
Ratchet of the present invention equal distribution on circumference on the driving disc.
Ratchet mechanism of the present invention can be the dish type ratchet, also can be the cylindricality ratchet, and to the dish type ratchet, said flank profil is the ratchet transverse tooth profile, and said P is the projected length of ratchet flank profil active line on ratchet tip circle circumference, and d is the ratchet diameter; For the cylindricality ratchet, said flank profil is the flank profil of ratchet side, and P is that ratchet flank profil working surface is long at the waist of ratchet side projection, and d is the ratchet diameter, and β is the angle that shaft axis is become with ratchet.
Compared with prior art, the present invention has loss of transmission accuracy height, traverse and contact stress is little, wear resistance is good advantage.
Below in conjunction with accompanying drawing the present invention and embodiment are described in detail:
Fig. 1 is a dish type ratchet mechanism structural representation of the present invention.
Fig. 2 is the structural representation of garden of the present invention cylindricality ratchet mechanism.
Fig. 3 is the nemaline schematic representation of the wide work of the various ratchet pawls of ratchet mechanism of the present invention.
Fig. 4 is the nemaline schematic representation of the wide work of the various ratchet pawls of ratchet mechanism of the present invention.
Fig. 5 is the embodiment's of a dish type ratchet mechanism of the present invention partial schematic diagram.
Fig. 6 launches schematic representation for the embodiment's of garden of the present invention post ratchet mechanism A to the part.
With reference to Fig. 1, Fig. 5, shown in Figure 5 is an embodiment's of dish type ratchet sour jujube structure of the present invention partial schematic diagram, comprise ratchet (1), ratchet (3), driving disc (2) and axle (6), ratchet (1) is fixed on the axle (6) by key (5), 12 ratchets equidistantly are set on the driving disc, working surface is a tapered plane, and the angle β of ratchet and driving disc radius is 8 °; The ratchet number is 47, and working surface is a convex surface.Driving disc links to each other by bearing pin (4) external impetus, and when the ratchet driving pawl, angle (pressure angle) α of the linear velocity V direction of ratchet and ratchet contacting point ratchet and stressed F direction is 18 °.
With reference to Fig. 2, Fig. 6, shown in Figure 6 is the embodiment's of cylinder ratchet mechanism of the present invention schematic representation, comprise ratchet (1), ratchet (3), driving disc (2) and axle (6), driving disc is positioned at the ratchet side, ratchet links by key (5) and axle, ratchet is 41,8 on ratchet, ratchet is on ratchet, ratchet all equidistantly distributes on driving disc, for making ratchet self-locking when initiatively just changeing, ratchet is provided with spring (9), for making ratchet and the ratchet can clutch, on-of pin (7) is arranged on the driving disc, there is jump ring (8) at the ratchet rear portion, when the ratchet driving pawl, ratchet and ratchet contacting point equal 15 ° to the pressure angle α (linear velocity direction and the angle that is subjected to force direction) of ratchet.External impetus drives driving disc (2) and ratchet (3) by bearing pin (4), driving pawl (1), and then axle (6) is rotated.When needs separated, on-of pin (7) was moved to the left, and drive driving disc, ratchet move to left, and the jump ring on the ratchet (8) makes the unlikely disengaging driving disc of ratchet and moves to left with driving disc, thereby reaches the separation purpose.Moving direction is just in time opposite during joint.
Claims (5)
1, a kind of ratchet mechanism comprises driving disc and axle, it is characterized in that ratchet and ratchet contacting point linear velocity V direction and stressed F direction are angle (pressure angle) α less than 35 °, and ratchet and driving disc radius are the angle β less than 15 °, and alpha-beta≤20 °; For the traverse loss is dropped to minimum, the corresponding garden Zhou Changdu of the projected length P of ratchet flank profil active line of the present invention on circumference preferably satisfies formula P 〉=π d/zn, (π is a Ratio of the circumference of a circle to its diameter, and z is the ratchet number, and n is a number of detents, and d is the ratchet diameter).
2, ratchet mechanism as claimed in claim 1 it is characterized in that said ratchet count z, number of detents n all can be in 2～100 value, but ratchet is counted z and is preferably got prime number.
3, ratchet mechanism as claimed in claim 1 or 2, it is characterized in that: the shape of said ratchet flank profil active line is preferably curve (protruding, recessed), also can be broken line (protruding, recessed) or straight line, the shape of the active line of ratchet pawl exterior feature is preferably curve (protruding, recessed), also can be broken line (protruding, recessed) or straight line.
4, ratchet mechanism as claimed in claim 3 is characterized in that: the wide active line of said flank profil active line and pawl can be used in combination mutually but have at least one to get curve, and is best for the two all gets curve and protruding recessed.
5, ratchet mechanism as claimed in claim 1 or 2 is characterized in that: said ratchet equal distribution on circumference on the driving disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109412 CN1072246A (en) | 1991-11-14 | 1991-11-14 | A kind of ratchet mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91109412 CN1072246A (en) | 1991-11-14 | 1991-11-14 | A kind of ratchet mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1072246A true CN1072246A (en) | 1993-05-19 |
Family
ID=4909810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91109412 Pending CN1072246A (en) | 1991-11-14 | 1991-11-14 | A kind of ratchet mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1072246A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088691A1 (en) * | 2020-10-26 | 2022-05-05 | 蒋亮健 | Swing angle adjustment device for electric fan oscillating head, and electric fan applying same |
-
1991
- 1991-11-14 CN CN 91109412 patent/CN1072246A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088691A1 (en) * | 2020-10-26 | 2022-05-05 | 蒋亮健 | Swing angle adjustment device for electric fan oscillating head, and electric fan applying same |
| CN114483625A (en) * | 2020-10-26 | 2022-05-13 | 蒋亮健 | Electric fan oscillating angle adjusting device and electric fan applying same |
| CN114483625B (en) * | 2020-10-26 | 2023-07-04 | 蒋亮健 | Electric fan swinging angle adjusting device and electric fan using same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |