CN217002786U - Transmission gear assembly capable of slipping - Google Patents
Transmission gear assembly capable of slipping Download PDFInfo
- Publication number
- CN217002786U CN217002786U CN202123369264.9U CN202123369264U CN217002786U CN 217002786 U CN217002786 U CN 217002786U CN 202123369264 U CN202123369264 U CN 202123369264U CN 217002786 U CN217002786 U CN 217002786U
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- gear
- transmission gear
- slider
- free end
- tooth
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 240000005002 Erythronium dens canis Species 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract description 7
- 230000037431 insertion Effects 0.000 abstract description 7
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 210000003781 tooth socket Anatomy 0.000 abstract 2
- 238000003754 machining Methods 0.000 description 3
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The utility model discloses a transmission gear assembly capable of slipping, which comprises a first gear and a second gear, wherein the middle part of the first gear is provided with an insertion hole, one side of the second gear is fixedly connected with a transmission gear which can be inserted into the insertion hole, the transmission gear is coaxial with the first gear, the outer side wall of the transmission gear is provided with convex teeth which are mutually spaced, a tooth socket is formed between every two adjacent convex teeth, the inner side wall of the insertion hole is provided with a plurality of elastic slipping pieces, and the free end of each slipping piece is provided with a convex part which is elastically clamped into the tooth socket to transmit power. When the load is overlarge, the first gear and the transmission gear can elastically slide, so that the gear is prevented from being damaged, and the service life is prolonged.
Description
Technical Field
The utility model relates to a transmission gear assembly, in particular to a transmission gear assembly capable of slipping.
Background
The rotating speed of the output shaft of the micromotor is obtained by the transmission of the motor rotor through the multi-stage reduction gears, because of small volume, the transmission gear can only adopt a small module gear, the strength is limited, and because of small motor power, the output torque of the main shaft and the strength of the transmission gear can be reasonably matched, and under normal load, the use requirement can be met. However, in the application process, the motor is often damaged due to overload of the motor, particularly in the application field of the micro motor, the condition that the load of the micro motor exceeds the rated load is often caused by artificial external force, the gear is easy to break, the whole micro motor or the gear box is generally required to be replaced to solve the problem, and great resource waste is caused.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention aims to provide a transmission gear assembly that can slip when a motor is overloaded, is not easy to break a gear, and has a long service life.
The technical scheme adopted by the utility model for solving the technical problem is as follows:
the utility model provides a drive gear subassembly that can skid, includes first gear and second gear, the middle part of first gear is provided with the jack, one side fixedly connected with of second gear can the cartridge be in drive gear in the jack, drive gear is coaxial with first gear, be provided with the dogtooth of mutual spaced on drive gear's the lateral wall, be formed with the tooth's socket between per two adjacent dogteeth, be provided with a plurality of elastic pieces that skid on the inside wall of jack, it is provided with the elasticity card and goes into to beat the saddle free end with the bellying of transmission power in the tooth's socket.
Preferably, the sliding member includes a connecting seat fixed on an inner side wall of the first gear, the sliding member further includes an elastic arm, one end of the elastic arm is fixed on a side wall of the connecting seat, the other end of the elastic arm extends along a circumferential direction of the transmission gear, and the protrusion is disposed at a free end of the elastic arm.
Preferably, the number of the connecting seats is three or more, and the top of the connecting seat is close to the addendum line of the transmission gear, so that the connecting seat can be abutted against the convex teeth to limit radial deformation of the first gear.
Preferably, the sliding piece is a protruding structure which is arranged on the inner side wall of the first gear and extends inwards, and the bulge part is formed at the free end of the sliding piece.
Preferably, the sliding member is a semi-elliptical shape, a larger end of the sliding member is fixed to an inner side wall of the first gear, a smaller end of the sliding member extends toward an axis of the first gear, and the protrusion is formed at the smaller end of the sliding member.
Preferably, the size of the sliding member is gradually reduced from a fixed end to a free end, the protrusion is formed at the free end of the sliding member, the protrusion is in a hook shape, and an outer side of the protrusion forms an arc surface matched with the tooth groove.
The utility model has the beneficial effects that:
the cooperation of the first and the second convex parts and the tooth grooves enables the first gear and the second gear to rotate together; because the slipping piece is elastic, when the first gear or the second gear exceeds the load, the slipping piece can be elastically deformed, so that the protruding part is separated from the tooth groove matched with the protruding part and slides to the adjacent tooth groove after passing the protruding tooth, the damage of external force to the gear is effectively prevented, the condition of tooth breakage or motor damage cannot occur, the use safety of the motor is improved, and the service life is prolonged;
secondly, set up the tooth's socket on the lateral wall of drive gear rather than the inside wall of first gear, be favorable to improving the machining precision of tooth's socket, make the transmission between drive gear and the first gear more steady with relative slip.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is an exploded view of example 1 of the present invention;
FIG. 3 is a front view of embodiment 2 of the present invention;
fig. 4 is a front view of embodiment 3 of the present invention.
Detailed Description
The technical scheme of the utility model is clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 to 4, the utility model provides a slidable transmission gear assembly, which includes a first gear 1 and a second gear 2, wherein an insertion hole 11 is formed in the middle of the first gear 1, the insertion hole 11 may be a through hole or a blind hole, a transmission gear 3 capable of being inserted into the insertion hole 11 is fixedly connected to one side of the second gear 2, the transmission gear 3 is coaxial with the first gear 1, protruding teeth 31 are formed on the outer side wall of the transmission gear 3, a tooth space 32 is formed between every two adjacent protruding teeth 31, the protruding teeth 31 and the tooth spaces 32 are uniformly distributed along the circumferential direction of the transmission gear 3, a plurality of elastic sliding members 4 are arranged on the inner side wall of the insertion hole 11, and a protruding portion 401 is arranged at the free end of each sliding member 4 and elastically clamped into the tooth space 32 to transmit power.
In the transmission gear assembly of the utility model, the matching of the convex part 401 and the tooth groove 32 enables the first gear 1 and the second gear 2 to transmit torque to rotate together; because the slip piece 4 is elastic, when the first gear 1 or the second gear 2 exceeds the load, the slip piece 4 can elastically deform, so that the protruding part 401 is separated from the tooth groove 32 matched with the protruding part and slides into the adjacent tooth groove 32 over the protruding tooth 31, the damage of external force to the gear is effectively prevented, the condition of tooth breakage or motor damage cannot occur, the use safety of the motor is improved, and the service life is prolonged.
In addition, in order to enable the protruding part 401 of the sliding piece 4 and the tooth grooves 32 to be still tightly matched after the sliding occurs between the transmission gear 3 and the first gear 1, the consistency of the shapes and the sizes of all the tooth grooves 32 must be high, and high machining precision is required, and the tooth grooves 32 are arranged on the outer side wall of the transmission gear 3 instead of the inner side wall of the first gear 1, so that the machining precision of the tooth grooves 32 and the protruding teeth 31 is improved, and the transmission and the relative sliding between the transmission gear 3 and the first gear 1 are more stable.
Fig. 1 and 2 show an embodiment 1 of the present invention, in this embodiment, the number of the sliding members 4 is three or more, each of the sliding members 4 is uniformly distributed along the circumference of the first gear 1, the sliding member 4 includes a connecting seat 42 fixed on the inner side wall of the first gear 1, the sliding member 4 further includes an elastic arm 41, one end of the elastic arm 41 is fixed on the side wall of the connecting seat 42, the other end extends along the circumference of the transmission gear 3, and a protruding portion 401 is disposed at the free end of the elastic arm 41 and is engaged with one of the tooth grooves 32. Further, the top of the connecting seat 42 is proximate to the addendum line of the transmission gear 3, so that the connecting seat 42 can abut against the convex teeth 31 to limit the radial deformation of the first gear 1.
When the first gear 1 or the second gear 2 exceeds the load, the elastic arm 41 can be elastically deformed, so that the convex part 401 is separated from the matched tooth slot 32 and slides into the adjacent tooth slot 32 by passing over the convex tooth 31; the function of the connecting seat 42 is: when the first gear 1 is subjected to a radial external force, the connecting seat 42 will be pressed against the convex teeth 31 of the transmission gear 3, so as to prevent the first gear 1 from being deformed and damaged under the compression of the external force.
In addition to the structure shown in the embodiment, the slip 4 may be designed as a protruding structure provided on the inner side wall of the first gear 1 and extending inward, and the boss 401 is formed at the free end of the slip 4.
Fig. 3 shows an embodiment 2 of the present invention, in which the sliding member 4 has a semi-elliptical shape, the larger end of the sliding member 4 is fixed to the inner side wall of the first gear 1, the smaller end of the sliding member 4 extends toward the axial center of the first gear 1, and a boss portion 401 is formed at the smaller end of the sliding member 4. When the first gear 1 or the second gear 2 exceeds the load, the sliding piece 4 is elastically deformed so that the convex portion 401 of the smaller end thereof is disengaged from the tooth groove 32 engaged therewith and slides into the adjacent tooth groove 32 over the convex tooth 31.
Fig. 4 shows an embodiment 3 of the present invention in which the dimensions of the sliding member 4 are gradually reduced from the fixed end to the free end, a convex portion 401 is formed at the free end of the sliding member 4, the convex portion 401 is formed in a hook shape, and the outer side portion of the convex portion 401 is formed in an arc surface fitted to the tooth groove 32. This embodiment is identical to embodiment 2 in operation principle, and is different in that the slip 4 in this embodiment is more easily deformed and the rated load is smaller.
The above are only preferred embodiments of the present invention, and all technical solutions that can achieve the objects of the present invention by basically the same means are within the protection scope of the present invention.
Claims (6)
1. The utility model provides a transmission gear subassembly that can skid, includes first gear (1) and second gear (2), its characterized in that, the middle part of first gear (1) is provided with jack (11), the last relative fixedly connected with of second gear (2) can the cartridge be in drive gear (3) in jack (11), drive gear (3) are coaxial with first gear (1), be provided with mutual spaced dogtooth (31) on the lateral wall of drive gear (3), be formed with tooth's socket (32) between per two adjacent dogteeth (31), be provided with a plurality of elastic on the inside wall of jack (11) and play slider (4), it is provided with elasticity card income to play slider (4) free end with bellying (401) of transmission power in tooth's socket (32).
2. A slidable transmission gear assembly according to claim 1, wherein the slider (4) comprises a connecting seat (42) fixed to an inner side wall of the first gear (1), the slider (4) further comprises an elastic arm (41), one end of the elastic arm (41) is fixed to the side wall of the connecting seat (42), the other end of the elastic arm extends along a circumferential direction of the transmission gear (3), and the protrusion (401) is disposed at a free end of the elastic arm (41).
3. A slipping transmission gear assembly according to claim 2, wherein the number of the connecting seats (42) is three or more, and the top of the connecting seats (42) is proximate to the addendum line of the transmission gear (3) so that the connecting seats (42) can abut against the protruding teeth (31) to restrict the radial deformation of the first gear (1).
4. A slidable transmission gear assembly according to claim 1, wherein said slider (4) is a protrusion structure provided on an inner side wall of said first gear (1) and extending inwardly, and said protrusion (401) is formed at a free end of said slider (4).
5. A kind of drive gear assembly that can skid according to claim 4, characterized by, the stated beat sliding piece (4) is a semi-ellipse, the major end of the stated beat sliding piece (4) is fixed on the inside wall of the first gear (1), the minor end of the stated beat sliding piece (4) extends towards the axle center of the first gear (1), the stated protruding department (401) is formed at the minor end of the stated beat sliding piece (4).
6. A slidable transmission gear assembly according to claim 4, wherein said slider member (4) is tapered from a fixed end to a free end, said protruding portion (401) is formed at the free end of said slider member (4), said protruding portion (401) is formed in a hook shape, and an outer side portion of said protruding portion (401) is formed in an arc surface which fits in said tooth space (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123369264.9U CN217002786U (en) | 2021-12-29 | 2021-12-29 | Transmission gear assembly capable of slipping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123369264.9U CN217002786U (en) | 2021-12-29 | 2021-12-29 | Transmission gear assembly capable of slipping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217002786U true CN217002786U (en) | 2022-07-19 |
Family
ID=82386766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123369264.9U Active CN217002786U (en) | 2021-12-29 | 2021-12-29 | Transmission gear assembly capable of slipping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217002786U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024063429A1 (en) * | 2022-09-20 | 2024-03-28 | 주식회사 니프코코리아 | Actuators for electric air vents in automobiles |
-
2021
- 2021-12-29 CN CN202123369264.9U patent/CN217002786U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024063429A1 (en) * | 2022-09-20 | 2024-03-28 | 주식회사 니프코코리아 | Actuators for electric air vents in automobiles |
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