CN216242226U - Gapless gear meshing structure and engine - Google Patents
Gapless gear meshing structure and engine Download PDFInfo
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- CN216242226U CN216242226U CN202122444854.7U CN202122444854U CN216242226U CN 216242226 U CN216242226 U CN 216242226U CN 202122444854 U CN202122444854 U CN 202122444854U CN 216242226 U CN216242226 U CN 216242226U
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- elastic
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Abstract
The utility model provides a gapless gear meshing structure which comprises a first gear, a second gear, an auxiliary gear and an elastic torque transmission piece, wherein the auxiliary gear and the first gear are coaxially arranged, the auxiliary gear can rotate relative to the first gear, the auxiliary gear and the first gear are both meshed with the second gear, the elastic torque transmission piece is arranged between the first gear and the auxiliary gear and is used for transmitting torque between the first gear and an auxiliary connecting piece, the elastic torque transmission piece has elastic force for driving the auxiliary gear to rotate relative to the first gear, and the auxiliary gear and the second gear form gapless meshing under the elastic force action of the elastic torque transmission piece; the auxiliary gear is meshed with the second gear in a gapless mode through the elastic torque transmission piece, and in the gear transmission process, the impact load when the first gear and the second gear are in meshed transmission can be reduced, so that the vibration when the first gear and the second gear are meshed is reduced, the noise generated due to vibration is reduced, the durability of each gear is improved, and the cost is saved.
Description
Technical Field
The utility model belongs to the field of engines, and particularly relates to a gapless gear meshing structure and an engine.
Background
When an engine works, great noise is usually generated, the noise is mainly generated when gears in the engine are meshed for transmission, generally, in order to form an oil film between the gears or give way to the expanded gears, when the gears are meshed, gaps exist between meshed teeth, and in the gear transmission process, the gears are vibrated under the action of impact load, so that the noise is generated.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a gapless gear engagement structure that reduces impact load, reduces vibration, and thus reduces noise during gear transmission.
To achieve the above and other related objects, the present invention provides a gapless gear engagement structure including a first gear and a second gear engaged with the first gear, further comprising:
the auxiliary gear is coaxially arranged with the first gear, can rotate relative to the first gear and is meshed with the second gear;
the elastic torque transmission piece is arranged between the first gear and the auxiliary gear and is used for transmitting the torque between the first gear and the auxiliary connecting piece;
the elastic torque transmission piece has elastic force for driving the auxiliary gear to rotate relative to the first gear, and the auxiliary gear and the second gear form gapless meshing under the elastic force action of the elastic torque transmission piece.
Optionally, the elastic torque transmission member is an open elastic ring, the first gear is provided with a first limiting portion, the auxiliary gear is provided with a second limiting portion, and two ends of the open elastic ring respectively abut against the first limiting portion and the second limiting portion;
under the elastic force action of the opening elastic ring, the auxiliary gear rotates relative to the first gear and is meshed with the second gear without a gap.
Optionally, a mounting groove is formed in the first end of the first gear, and the opening elastic ring is arranged in the mounting groove.
Optionally, the first gear protrudes outwards along the axial direction thereof to form a mounting boss, and the auxiliary gear is rotatably disposed on the mounting boss.
Optionally, the first limiting part is a first pin shaft, the first pin shaft is arranged in the mounting groove along the axial direction of the first gear, the second limiting part is a second pin shaft, and the second pin shaft is arranged on the auxiliary gear along the axial direction of the first gear;
the opening elastic ring is arranged in the mounting groove, and the first arc-shaped groove and the second arc-shaped groove of the opening elastic ring are matched with the first pin shaft and the second pin shaft respectively.
Optionally, a positioning member for circumferentially fixing the auxiliary gear and the first gear is further included.
Optionally, the positioning element is a bolt, the auxiliary gear is provided with a first through hole along the circumferential direction thereof, the first gear is provided with a second through hole along the circumferential direction thereof, and the bolt sequentially penetrates through the first through hole and the second through hole.
Optionally, the floating gear assembly further comprises a limiting check ring, a check ring groove is formed in the mounting boss, and the limiting check ring is arranged in the check ring groove and axially limits the floating gear on the first gear.
Optionally, there are two auxiliary gears respectively disposed at two ends of the first gear.
The utility model also provides an engine which comprises the gapless gear meshing structure.
As described above, the gapless gear engagement structure of the present invention has the following advantageous effects:
the auxiliary gear is meshed with the second gear in a gapless mode through the elastic torque transmission piece, and in the gear transmission process, the impact load when the first gear is meshed with the second gear for transmission can be reduced, so that the vibration when the first gear is meshed with the second gear is reduced, the noise generated by vibration is reduced, meanwhile, the durability of each gear is improved, and the cost is saved; due to the elasticity of the elastic torque transmission piece, in the transmission process, the auxiliary gear can press the elastic torque transmission piece back to eliminate the expansion amount of the auxiliary gear and the second gear caused by heating, and meanwhile, the formation of an oil film between the auxiliary gear and the second gear cannot be influenced, so that the transmission reliability is improved.
Drawings
FIG. 1 is a top view of an exemplary gapless gear engagement of the present invention;
FIG. 2 is an isometric view of the slackless gear engagement structure of FIG. 1;
FIG. 3 is an exploded view of the gapless gear engagement of FIG. 1;
FIG. 4 is a partial exploded view of the gapless gear engagement of FIG. 1 (without the second gear);
FIG. 5 is an isometric view of the first gear of FIG. 4;
FIG. 6 is a schematic view of the first gear of FIG. 4;
FIG. 7 is an exemplary isometric view of the split ammunition ring of FIG. 4;
fig. 8 is another exemplary isometric view of the split coil of fig. 4.
Part number description:
1-a first gear; 11-a first stop; 12-mounting grooves; 13-mounting a boss; 131-a retainer groove; 14-a second via;
2-auxiliary gear; 21-a second limiting part; 22-a first via;
3-a second gear;
4-elastic torque transmission piece; 41-a first arc-shaped groove; 42-a second arc-shaped slot;
5-a positioning member;
6-limiting retainer ring.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
As shown in fig. 1-8, the present invention provides a gapless gear engagement structure, which includes a first gear 1, a second gear 3, an auxiliary gear 2 and an elastic transmission torque element 4, wherein the auxiliary gear 2 is coaxially disposed with the first gear 1, and the second gear 3 is engaged with the first gear 1 and the auxiliary gear 2, the elastic transmission torque element 4 is connected between the first gear 1 and the auxiliary gear 2, and the elastic transmission torque element 4 can transmit a torque between the first gear 1 and the auxiliary gear 2, that is, when the first gear 1 rotates, the first gear 1 drives the auxiliary gear 2 to rotate through the action of the elastic transmission torque element 4, and when the auxiliary gear 2 rotates, the auxiliary gear 2 drives the first gear 1 to rotate through the action of the elastic transmission torque element 4; meanwhile, the elastic transmission member 4 also has elastic force for driving the auxiliary gear 2 to rotate relative to the first gear 1, and the auxiliary gear 2 rotates under the elastic force of the elastic transmission member 4 and forms gapless meshing with the second gear 3.
In the actual use process, as shown in fig. 1 and 4, after the first gear 1 and the auxiliary gear 2 are both meshed with the second gear 3, the auxiliary gear 2 is driven to rotate relative to the first gear 1 by the elastic force of the elastic torque transmission member 4, so that the auxiliary gear 2 and the second gear 3 form gapless meshing (at this time, the first gear and the second gear are in gap meshing); when the first gear is a driving gear 1, the first gear 1 rotates, under the torque transmission effect of the elastic torque transmission piece 4, the auxiliary gear 2 rotates along with the first gear 1, so that the auxiliary gear 2 drives the second gear 3 to rotate firstly, and when the auxiliary gear 2 drives the second gear 3 to rotate, the auxiliary gear 2 presses the elastic torque transmission piece 4 back under the resistance of the second gear 3, so that the teeth of the first gear 1 are in contact transmission with the teeth of the second gear 3, namely before the first gear 1 is not in meshing contact with the second gear 3, the auxiliary gear 2 drives the second gear 3 to rotate, thereby reducing or absorbing impact vibration generated when the first gear 1 is meshed with the second gear 3; when the second driving gear 3 is a driving gear, the second gear 3 rotates, the auxiliary gear 2 rotates along with the second gear 3, the first gear 1 rotates along with the auxiliary gear 2 under the torque transmission effect of the elastic torque transmission piece 4, and meanwhile, the auxiliary gear 2 presses the elastic torque transmission piece 4 back to enable the teeth of the second gear 3 to be in contact with the teeth of the first gear 1 to rotate; that is, before the second gear 3 is not in meshing contact with the first gear 1, the auxiliary gear 2 drives the first gear 1 to rotate, so that impact vibration generated when the second gear 3 is meshed with the first gear 1 is reduced or absorbed.
By adopting the gapless meshing gear structure, the auxiliary gear 2 and the second gear 3 are meshed without gaps through the elastic torque transmission piece 4, and in the gear transmission process, the impact load when the first gear 1 and the second gear 3 are meshed for transmission can be reduced, so that the vibration when the first gear 1 and the second gear 3 are meshed is reduced, the noise generated by vibration is reduced, meanwhile, the durability of each gear is improved, and the cost is saved; because the elastic force of the elastic torque transmission piece 4, in the transmission process, the auxiliary gear 2 can press the elastic torque transmission piece 4 back to eliminate the expansion amount of the auxiliary gear 2 and the second gear 3 caused by heating, and meanwhile, the formation of an oil film between the auxiliary gear 2 and the second gear 3 cannot be influenced, so that the transmission reliability is improved.
In a specific embodiment, the auxiliary gear 2 is rotatably mounted on the first gear, and can also be mounted outside the first gear and rotate with the first gear.
The elastic torque transmission member 4 may be a split spring ring, a spring, a rubber block or other elastic member.
In some embodiments, as shown in fig. 4 and fig. 7-8, the elastic torque transmission member 4 is a split elastic ring, the first gear 1 is provided with a first limiting portion 11, the auxiliary gear 2 is provided with a second limiting portion 21, two ends of the split elastic ring respectively abut against the first limiting portion 11 and the second limiting portion 21, and under the elastic force of the split elastic ring, the auxiliary gear 2 rotates relative to the first gear 1 and forms a gapless engagement with the second gear 3; simultaneously, when first gear 1 rotated, supported respectively through the both ends of opening elastic ring tightly on first spacing portion 11 and the spacing portion 21 of second to drive auxiliary gear 2 and rotate, perhaps when auxiliary gear 2 rotated, through the split ring transmission, first gear 1 followed auxiliary gear 2 and rotated.
Adopt the opening elastic ring, can not only rotate through the relative first gear 1 of elasticity drive auxiliary gear 2 that the opening elastic ring has, still have the effect of transmission moment of torsion, simultaneously, still have simple structure, be convenient for assembly manufacturing, low cost's advantage.
Specifically, after the two ends of the split elastic ring are respectively abutted against the first limiting part 11 and the second limiting part 21, the elastic force of the split elastic ring can be to reduce the split of the split elastic ring, or the elastic force of the split elastic ring can be to increase the split of the split elastic ring; when the elastic force of the circlip for opening is to reduce the opening of the circlip for opening, the circlip for opening drives the auxiliary gear 2 to rotate along the direction K in fig. 4 relative to the first gear 1, and when the elastic force of the circlip for opening is to increase the opening of the circlip for opening, the circlip for opening drives the auxiliary gear 2 to rotate along the direction K in fig. 4 relative to the first gear 1, that is, the elastic force of the circlip for opening is determined by the rotation direction according to the auxiliary gear 2.
In some embodiments, as shown in fig. 1 and fig. 5 to 6, a first end (a lower end in fig. 1) of the first gear 1 is provided with a mounting groove 12, and the open elastic ring is mounted in the mounting groove 12; through setting up this mounting groove 12 installation opening bullet circle, not only provide the mounted position for opening bullet circle, simultaneously, still reduced first gear 1's weight, improved compact structure nature.
Specifically, the mounting groove 12 is an annular groove formed in the first end of the first gear 1, and has an annular groove structure, so that the mounting groove is convenient to process and manufacture and has the advantage of simple structure.
In some embodiments, as shown in fig. 6, the first gear 1 protrudes outward in the axial direction thereof to form a mounting boss 13, and the auxiliary gear 2 is rotatably mounted on the mounting boss 13; through setting up this installation boss 13, not only provide the mounted position for the auxiliary gear, still improved compact structure nature.
In some embodiments, as shown in fig. 4 and 7, the first limiting member 11 is a first pin, the first pin is fixedly installed in the installation groove 12 along the axial direction of the first gear, the second limiting member 21 is a second pin, and the second pin is fixedly installed on the auxiliary gear 2 along the axial direction of the first gear; correspondingly, a first arc-shaped groove 41 and a second arc-shaped groove 42 are respectively arranged at two ends of the opening elastic ring, the opening elastic ring is installed in the installation groove 12, and the first arc-shaped groove 41 and the second arc-shaped groove 42 of the opening elastic ring are respectively abutted against and matched with the first pin shaft and the second pin shaft. The first pin shaft and the second pin shaft are adopted, so that the structure is simple, and the advantage of convenience in assembly and manufacturing is achieved; through setting up first arc wall 41 and second arc wall 42 structure, can improve and sell the area of contact of axle with first round pin and second round pin axle, improve the cooperation steadiness, avoid the pine to take off.
In a specific embodiment, as shown in fig. 7, the first arc-shaped groove 41 and the second arc-shaped groove 42 are disposed opposite to each other, and when the first arc-shaped groove 41 and the second arc-shaped groove 42 are respectively abutted and tightly fitted with the first pin and the second pin, the elastic force of the split elastic ring is to reduce the opening of the split retaining ring, that is, the split elastic ring can drive the floating gear to rotate in the direction K in the drawing.
In other embodiments, as shown in fig. 8, the first arc-shaped groove 41 and the second arc-shaped groove 42 are disposed away from each other, and when the first arc-shaped groove 41 and the second arc-shaped groove 42 are respectively abutted against and matched with the first pin and the second pin, the elastic force of the split elastic ring is to increase the opening of the split retaining ring, that is, the split elastic ring can drive the floating gear to rotate in the reverse direction of K in the drawing.
In some embodiments, as shown in fig. 1 and 4, the gapless gear engagement structure further includes a positioning member 5 for circumferentially fixing the auxiliary gear 2 and the first gear 1; the positioning piece 5 is arranged to circumferentially fix the auxiliary gear 2 and the first gear 1, so that the assembly is convenient, the positioning piece 5 is taken down after the first gear 1 and the auxiliary gear 2 are both meshed with the second gear 2 (in the case of clearance meshing), and the auxiliary gear 2 rotates under the action of the opening elastic ring, so that the second gear 2 is meshed without clearance.
Specifically, the positioning member may be a bolt, a pin, or other positioning member.
In some embodiments, as shown in fig. 4-5, the positioning element 5 is a bolt, the auxiliary gear 2 has a first through hole 22 along the circumferential direction thereof, the first gear 1 has a second through hole 14 along the axial direction thereof, and the bolt sequentially penetrates through the first through hole 22 and the second through hole 14 to be circumferentially fixed; through adopting the bolt, under playing the spacing effect of circumference, still have simple structure, the advantage of the dismouting of being convenient for.
In some embodiments, as shown in fig. 4 and 6, the gapless gear meshing structure further includes a limit retainer 6, a retainer groove 131 is formed on the mounting boss 13, the limit retainer 6 is mounted in the retainer groove 131, and axially limits the auxiliary gear 2 on the first gear 1; the auxiliary gear 2 is limited by the limiting retainer ring 6, so that the axial movement of the auxiliary gear is avoided, and the transmission reliability of the auxiliary gear is improved.
In some embodiments, as shown in fig. 1 to 3, there are two auxiliary gears 2 respectively disposed at both ends of the first gear 1, and correspondingly, there are two second gears 3 respectively disposed at both ends of the first gear 1, and by providing two auxiliary gears, the number of gears engaged with the first gear 1 can be increased, and at the same time, the arrangement position can be increased.
The utility model also provides an engine, which comprises the gapless gear meshing structure; the gapless gear meshing structure is arranged on the engine, so that the overall noise of the engine can be reduced, the service life of the engine is prolonged, and the cost is saved.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A gapless gear engagement structure comprising a first gear and a second gear engaged with the first gear, characterized by further comprising:
the auxiliary gear is coaxially arranged with the first gear, can rotate relative to the first gear and is meshed with the second gear;
the elastic torque transmission piece is arranged between the first gear and the auxiliary gear and is used for transmitting the torque between the first gear and the auxiliary connecting piece;
the elastic torque transmission piece has elastic force for driving the auxiliary gear to rotate relative to the first gear, and the auxiliary gear and the second gear form gapless meshing under the elastic force action of the elastic torque transmission piece.
2. The gapless gear engagement structure of claim 1, wherein: the elastic torque transmission piece is an opening elastic ring, a first limiting part is arranged on the first gear, a second limiting part is arranged on the auxiliary gear, and two ends of the opening elastic ring are respectively abutted against the first limiting part and the second limiting part;
under the elastic force action of the opening elastic ring, the auxiliary gear rotates relative to the first gear and is meshed with the second gear without a gap.
3. The gapless gear engagement structure of claim 2, wherein: the mounting groove has been seted up to the one end of first gear, the opening elastic ring sets up in the mounting groove.
4. The gapless gear engagement structure of claim 3, wherein: one end of the first gear protrudes outwards along the axial direction to form a mounting boss, and the auxiliary gear is rotatably arranged on the mounting boss.
5. The gapless gear engagement structure of claim 3, wherein: the first limiting part is a first pin shaft which is arranged in the mounting groove along the axial direction of the first gear, the second limiting part is a second pin shaft which is arranged on the auxiliary gear along the axial direction of the first gear;
the two ends of the opening elastic ring are respectively provided with a first arc-shaped groove and a second arc-shaped groove, and the first arc-shaped groove and the second arc-shaped groove of the opening elastic ring are respectively matched with the first pin shaft and the second pin shaft.
6. The gapless gear engagement structure of claim 3, wherein: the positioning device further comprises a positioning piece used for circumferentially fixing the auxiliary gear and the first gear.
7. The gapless gear engagement structure of claim 6, wherein: the locating piece is a bolt, a first through hole is formed in the auxiliary gear along the circumferential direction of the auxiliary gear, a second through hole is formed in the first gear along the circumferential direction of the first gear, and the bolt sequentially penetrates through the first through hole and the second through hole.
8. The gapless gear engagement structure of claim 4, wherein: the floating gear is characterized by further comprising a limiting check ring, a check ring groove is formed in the mounting boss, and the limiting check ring is arranged in the check ring groove and axially limits the floating gear on the first gear.
9. The gapless gear engagement structure of claim 3, wherein: the auxiliary gears are two and are respectively arranged at two ends of the first gear.
10. An engine, characterized in that: comprising a gapless gear engagement according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122444854.7U CN216242226U (en) | 2021-10-11 | 2021-10-11 | Gapless gear meshing structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122444854.7U CN216242226U (en) | 2021-10-11 | 2021-10-11 | Gapless gear meshing structure and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242226U true CN216242226U (en) | 2022-04-08 |
Family
ID=80986731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122444854.7U Active CN216242226U (en) | 2021-10-11 | 2021-10-11 | Gapless gear meshing structure and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242226U (en) |
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2021
- 2021-10-11 CN CN202122444854.7U patent/CN216242226U/en active Active
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