CN218894918U - Novel plastic gear structure - Google Patents
Novel plastic gear structure Download PDFInfo
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- CN218894918U CN218894918U CN202320034485.0U CN202320034485U CN218894918U CN 218894918 U CN218894918 U CN 218894918U CN 202320034485 U CN202320034485 U CN 202320034485U CN 218894918 U CN218894918 U CN 218894918U
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- inner ring
- gear
- metal inner
- plastic
- housing
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Abstract
The utility model discloses a novel plastic gear structure, which comprises: the driving motor comprises a gear shell, a driving motor and a plastic gear assembly; the plastic gear assembly comprises: the rotating shaft, the metal inner ring and the plastic outer gear ring; the periphery of the metal inner ring is provided with an annular groove, the periphery of the plastic outer gear ring is provided with meshing teeth, the inner ring of the plastic outer gear ring is provided with an annular bulge matched with the annular groove of the periphery of the metal inner ring, the annular bulge is embedded into the annular groove to limit the movement of the plastic outer gear ring relative to the metal inner ring in the axial direction of the rotating shaft, the periphery of the metal inner ring is provided with a first tooth part, the inner ring of the plastic outer gear ring is provided with a second tooth part matched with the first tooth part of the periphery of the metal inner ring, and the first tooth part and the second tooth part are mutually meshed to limit the rotation of the plastic outer gear ring relative to the metal inner ring. According to the novel plastic gear structure provided by the utility model, the metal inner ring and the plastic outer gear ring are matched more stably, and the metal inner ring and the plastic outer gear ring can be prevented from being separated from each other.
Description
Technical Field
The utility model relates to a novel plastic gear structure.
Background
At present, a key groove is usually used for a plastic gear structure in the market, and a plastic gear is prevented from being separated from an iron sleeve in a manner of embedding or knurling and the like. The gear strength of the existing plastic gear structure is weaker, and when the existing plastic gear structure receives external large torque, the plastic gear and the iron piece of the existing plastic gear structure are easy to separate or the situation of gear fracture occurs.
Disclosure of Invention
The utility model provides a novel plastic gear structure for solving the technical problems, which adopts the following technical scheme:
a novel plastic gear structure comprising:
a gear housing having an installation space formed therein;
the driving motor is arranged in the gear shell and used for providing power;
the plastic gear assembly is rotationally arranged in the gear shell and is connected to the driving motor for transmitting driving force;
the plastic gear assembly comprises:
the rotating shaft is rotatably arranged in the gear shell;
the metal inner ring is sleeved on the outer surface of the rotating shaft;
the plastic outer gear ring is sleeved outside the metal inner ring;
the outer periphery of the metal inner ring is provided with an annular groove, the outer periphery of the plastic outer gear ring is provided with meshing teeth, a motor shaft of the driving motor is matched with the meshing teeth, the inner ring of the plastic outer gear ring is provided with an annular protrusion matched with the annular groove of the outer periphery of the metal inner ring, the annular protrusion is embedded into the annular groove to limit the plastic outer gear ring to move relative to the metal inner ring in the axial direction of the rotating shaft, the outer periphery of the metal inner ring is provided with a first tooth part, the inner ring of the plastic outer gear ring is provided with a second tooth part matched with the first tooth part of the outer periphery of the metal inner ring, and the first tooth part and the second tooth part are mutually meshed to limit the rotation of the plastic outer gear ring relative to the metal inner ring.
Further, the gear housing includes a first housing and a second housing, the first housing and the second housing constituting the gear housing.
Further, the driving motor is arranged on the second shell.
Further, the novel plastic gear structure further comprises a mounting bracket, a motor shaft of the driving motor is rotationally connected to the mounting bracket, one end of the rotating shaft is rotationally connected to the second shell, and the other end of the rotating shaft is rotationally connected to the mounting bracket.
Further, the novel plastic gear structure comprises a first bearing and a second bearing, and the rotating shaft is rotatably supported in the first bearing and the second bearing;
a first mounting groove is formed in the first shell, and the first bearing is arranged in the first mounting groove;
the second shell is provided with a second mounting groove, and the second bearing is arranged in the second mounting groove.
Further, a mounting boss is formed on the second housing, and the second mounting groove is formed on the mounting boss.
Further, an accommodating groove is formed in the metal inner ring, and the mounting boss is accommodated in the accommodating groove.
Further, the novel plastic gear structure comprises a one-way bearing;
the metal inner ring is provided with a supporting groove, the one-way bearing is arranged in the supporting groove, and the one-way bearing is sleeved on the rotating shaft.
Further, an external tooth part is formed at the part of the rotating shaft, which is positioned outside the metal inner ring.
Further, the novel plastic gear structure further comprises an output shaft rotatably supported in the gear housing and at least partially penetrating through the second housing to be located outside the second housing, and the output shaft is connected to the external tooth part of the rotating shaft.
The novel plastic gear structure has the advantages that the metal inner ring and the plastic outer gear ring are matched more stably, and the metal inner ring and the plastic outer gear ring can be prevented from being separated from each other.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic illustration of a novel plastic gear structure of the present utility model;
FIG. 2 is a schematic illustration of a metal inner race and a plastic outer ring gear of a novel plastic gear structure of the present utility model;
FIG. 3 is an exploded view of a novel plastic gear structure of the present utility model;
the gear housing 10, the first housing 11, the second housing 12, the second mounting groove 121, the mounting boss 122, the driving motor 20, the plastic gear assembly 30, the rotating shaft 31, the external gear portion 311, the metal inner ring 32, the annular groove 321, the first tooth portion 322, the accommodating groove 323, the supporting groove 324, the plastic outer gear ring 33, the engaging tooth 331, the annular protrusion 332, the second tooth portion 333, the mounting bracket 40, the first mounting groove 41, the first bearing 50, the second bearing 60, and the one-way bearing 70.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the present application, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
1-3 illustrate a novel plastic gear structure of the present application, comprising: a gear housing 10, a drive motor 20 and a plastic gear assembly 30. Wherein an installation space is formed in the gear housing 10. The driving motor 20 is disposed in the gear housing 10 to provide power. The plastic gear assembly 30 is rotatably disposed in the gear housing 10, and the plastic gear assembly 30 is connected to the driving motor 20 for transmitting driving force.
Specifically, the plastic gear assembly 30 includes: a rotating shaft 31, a metal inner ring 32 and a plastic outer gear ring 33. The rotary shaft 31 is rotatably disposed in the gear housing 10. The metal inner ring 32 is sleeved on the outer surface of the rotating shaft 31. The plastic outer gear ring 33 is sleeved outside the metal inner ring 32.
As a preferred embodiment, the outer circumference of the metal inner ring 32 is provided with an annular groove 321, the outer circumference of the plastic outer ring gear 33 is formed with engagement teeth 331, and the motor shaft of the driving motor 20 is engaged with the engagement teeth 331. The inner ring of the plastic outer ring gear 33 is formed with an annular protrusion 332 which is matched with the annular groove 321 of the outer periphery of the metal inner ring 32, the annular protrusion 332 is embedded into the annular groove 321 to limit the movement of the plastic outer ring gear 33 relative to the metal inner ring 32 in the axial direction of the rotating shaft 31, the outer periphery of the metal inner ring 32 is formed with a first tooth part 322, the inner ring of the plastic outer ring gear 33 is formed with a second tooth part 333 which is matched with the first tooth part 322 of the outer periphery of the metal inner ring 32, and the first tooth part 322 and the second tooth part 333 are mutually meshed to limit the rotation of the plastic outer ring gear 33 relative to the metal inner ring 32.
Through the structural cooperation between the metal inner ring 32 and the plastic outer gear ring 33, the cooperation stability between the metal inner ring 32 and the plastic outer gear ring 33 can be improved, and the separation or fracture between the metal inner ring 32 and the plastic outer gear ring 33 caused by overlarge torque can be prevented.
As a preferred embodiment, the gear housing 10 includes a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 constitute the gear housing 10. Wherein the driving motor 20 is disposed on the second housing 12. Specifically, the first housing 11 and the second housing 12 are connected together by means of screws or snaps or the like.
As a preferred embodiment, the novel plastic gear structure further comprises a mounting bracket 40, the motor shaft of the driving motor 20 is rotatably connected to the mounting bracket 40, one end of the rotating shaft 31 is rotatably connected to the second housing 12, and the other end is rotatably connected to the mounting bracket 40. In the embodiment of the present application, a mounting bracket 40 is provided between the first housing 11 and the second housing 12 for assisting in supporting the driving motor 20 and the rotation shaft 31.
As a preferred embodiment, the novel plastic gear structure comprises a first bearing 50 and a second bearing 60, and the rotating shaft 31 is rotatably supported in the first bearing 50 and the second bearing 60. The mounting bracket 40 has a first mounting groove 41 formed therein, and the first bearing 50 is disposed in the first mounting groove 41. The second housing 12 has a second mounting groove 121 formed therein, and the second bearing 60 is disposed in the second mounting groove 121.
As a preferred embodiment, the second housing 12 is formed with a mounting boss 122, and the mounting boss 122 is formed with a second mounting groove 121. And the metal inner ring 32 is formed with a receiving groove 323, and the mounting boss 122 is received in the receiving groove 323. In this way, the metal inner ring 32 is clamped to the second housing 12, and the mounting stability of the metal inner ring 32 is improved.
As a preferred embodiment, the novel plastic gear structure comprises a one-way bearing 70. The metal inner ring 32 is formed with a supporting groove 324, the one-way bearing 70 is installed in the supporting groove 324, and the one-way bearing 70 is sleeved on the rotating shaft 31.
As a preferred embodiment, the portion of the rotating shaft 31 located outside the metal inner ring 32 is formed with an external tooth portion 311. The novel plastic gear structure further comprises an output shaft (not shown) rotatably supported within the gear housing 10 and at least partially passing through the second housing 12 to be located outside the second housing 12. It will be appreciated that the output shaft is connected to the external teeth portion 311 of the rotating shaft 31 by gears or the like.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the utility model in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the utility model.
Claims (10)
1. A novel plastic gear structure, comprising:
a gear housing having an installation space formed therein;
the driving motor is arranged in the gear shell and used for providing power;
the plastic gear assembly is rotationally arranged in the gear shell and is connected to the driving motor for transmitting driving force;
the plastic gear assembly comprises:
the rotating shaft is rotatably arranged in the gear shell;
the metal inner ring is sleeved on the outer surface of the rotating shaft;
the plastic outer gear ring is sleeved outside the metal inner ring;
the outer periphery of the metal inner ring is provided with an annular groove, the outer periphery of the plastic outer gear ring is provided with meshing teeth, a motor shaft of the driving motor is matched with the meshing teeth, the inner ring of the plastic outer gear ring is provided with an annular protrusion matched with the annular groove of the outer periphery of the metal inner ring, the annular protrusion is embedded into the annular groove to limit the plastic outer gear ring to move relative to the metal inner ring in the axial direction of the rotating shaft, the outer periphery of the metal inner ring is provided with a first tooth part, the inner ring of the plastic outer gear ring is provided with a second tooth part matched with the first tooth part of the outer periphery of the metal inner ring, and the first tooth part and the second tooth part are mutually meshed to limit the rotation of the plastic outer gear ring relative to the metal inner ring.
2. The novel plastic gear structure according to claim 1, wherein,
the gear housing comprises a first housing and a second housing, the first housing and the second housing forming the gear housing.
3. The novel plastic gear structure according to claim 2, wherein,
the driving motor is arranged on the second shell.
4. The novel plastic gear structure according to claim 3, wherein,
the novel plastic gear structure further comprises a mounting bracket, a motor shaft of the driving motor is rotationally connected to the mounting bracket, one end of the rotating shaft is rotationally connected to the second shell, and the other end of the rotating shaft is rotationally connected to the mounting bracket.
5. The novel plastic gear structure according to claim 4, wherein,
the novel plastic gear structure comprises a first bearing and a second bearing, and the rotating shaft is rotatably supported in the first bearing and the second bearing;
a first mounting groove is formed in the first shell, and the first bearing is arranged in the first mounting groove;
the second shell is provided with a second mounting groove, and the second bearing is arranged in the second mounting groove.
6. The novel plastic gear structure according to claim 5, wherein,
the second shell is provided with a mounting boss, and the mounting boss is provided with the second mounting groove.
7. The novel plastic gear structure according to claim 6, wherein,
and the metal inner ring is provided with an accommodating groove, and the mounting boss is accommodated in the accommodating groove.
8. The novel plastic gear structure according to claim 7, wherein,
the novel plastic gear structure comprises a one-way bearing;
the metal inner ring is provided with a supporting groove, the one-way bearing is arranged in the supporting groove, and the one-way bearing is sleeved on the rotating shaft.
9. The novel plastic gear structure according to claim 8, wherein,
an external tooth part is formed at the part of the rotating shaft, which is positioned outside the metal inner ring.
10. The novel plastic gear structure according to claim 9, wherein,
the novel plastic gear structure further comprises an output shaft which is rotatably supported in the gear housing and at least partially penetrates through the second housing to be located outside the second housing, and the output shaft is connected to the external tooth part of the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320034485.0U CN218894918U (en) | 2023-01-05 | 2023-01-05 | Novel plastic gear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320034485.0U CN218894918U (en) | 2023-01-05 | 2023-01-05 | Novel plastic gear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218894918U true CN218894918U (en) | 2023-04-21 |
Family
ID=85995635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320034485.0U Active CN218894918U (en) | 2023-01-05 | 2023-01-05 | Novel plastic gear structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218894918U (en) |
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2023
- 2023-01-05 CN CN202320034485.0U patent/CN218894918U/en active Active
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