CN212616176U - Plastic gear structure for reducing injection molding deformation - Google Patents
Plastic gear structure for reducing injection molding deformation Download PDFInfo
- Publication number
- CN212616176U CN212616176U CN202021489133.7U CN202021489133U CN212616176U CN 212616176 U CN212616176 U CN 212616176U CN 202021489133 U CN202021489133 U CN 202021489133U CN 212616176 U CN212616176 U CN 212616176U
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- Prior art keywords
- gear
- plastic gear
- plastic
- gear body
- sheath
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- 229920003023 plastic Polymers 0.000 title claims abstract description 58
- 239000004033 plastic Substances 0.000 title claims abstract description 58
- 238000001746 injection moulding Methods 0.000 title claims abstract description 16
- 230000003014 reinforcing effect Effects 0.000 claims description 15
- 238000005728 strengthening Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 3
- 210000003205 muscle Anatomy 0.000 abstract description 3
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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- Gears, Cams (AREA)
Abstract
The utility model discloses a plastic gear structure for reducing injection moulding warp, including plastic gear body, gear cover plate and embedded gear sheath, the outside of plastic gear body is provided with the external tooth all around, and is provided with the internal tooth all around in the middle of the inboard of plastic gear body is positive, the inboard fixed mounting all around of plastic gear body has the strengthening rib, and plastic gear body up end reserves the pressure point hole to the both sides in pressure point hole are equipped with the recess, the bottom both sides fixed mounting of gear cover plate has the bearing, and the inboard bottom of bearing is provided with soon rivets the point, embedded gear sheath and internal tooth are rotatory to be linked, and the bottom mounting of embedded gear sheath is on the bearing. This a plastic gear structure for reducing injection moulding warp, gear tow sides concentric diameter 59.4mm position increase wall thickness 1.3 mm's strengthening rib, and 24 muscle of the original design of series connection can optimize the circularity deformation before the addendum circle is repaiied the type.
Description
Technical Field
The utility model relates to a gear technical field specifically is a plastics gear structure for reducing injection moulding warp.
Background
The gear is extremely widely applied, and the strength and the precision of the gear determine the quality and the NVH performance of the product. As a core component of a safety part, the processing and manufacturing of gears, particularly the development of plastic gears, are influenced by factors such as raw materials, molds, equipment, processes, and environments, and the good structural design directly influences the functions, strength, and ease of manufacturing of parts.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a plastics gear structure for reducing injection moulding warp to solve the not strong problem of plastics gear intensity that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a plastics gear structure for reducing injection moulding warp, includes plastic gear body, gear cover plate and embedded gear sheath, the outside of plastic gear body is provided with the external tooth all around, and is provided with the internal tooth all around in the middle of the inboard centre of plastic gear body, the inboard fixed mounting all around of plastic gear body has the strengthening rib, and plastic gear body up end reserves the pressure point hole to the both sides in pressure point hole are equipped with the recess, the bottom both sides fixed mounting of gear cover plate has the bearing, and the inboard bottom of bearing is provided with soon rivets the point, embedded gear sheath and internal tooth are rotatory to be linked, and the bottom mounting of embedded gear sheath is on the bearing.
Preferably, the plastic gear body, the internal teeth, the pressure point holes, the grooves and the external teeth are all of an integrated structure.
Preferably, the number of the reinforcing ribs is 24, the thickness of each reinforcing rib is 1.3mm, the reinforcing ribs are uniformly distributed in the plastic gear body, and the reinforcing ribs are connected in a divergent mode.
Preferably, the internal teeth and the external teeth are equal in number and are arranged around the plastic gear body at equal angles.
Preferably, the number of the pressure point holes is 6, and the diameter of each pressure point hole is 5.2 mm.
Preferably, the embedded gear sheath is movably connected with the plastic gear body and the gear cover plate, and the threads on the inner side of the embedded gear sheath are matched with the threads on the outer side of the inner teeth.
Compared with the prior art, the beneficial effects of the utility model are that: this a plastic gear structure for reducing injection moulding deformation, gear positive and negative two-sided concentric diameter 59.4mm position increase wall thickness 1.3 mm's strengthening rib, and 24 muscle of the former design of series connection can optimize the circularity deformation before the addendum circle is repaiied the type for this technical scheme is after increasing the alert muscle of enhancement, and bulk strength obtains further promotion, has reduced the deflection, has satisfied the user demand of plastic gear when using.
Drawings
FIG. 1 is a schematic view of a non-bearing surface structure of the present invention;
FIG. 2 is a schematic view of the structure of the bearing surface of the present invention;
FIG. 3 is a schematic view of the sectional structure of the plastic gear body and the gear cover plate;
FIG. 4 is a schematic cross-sectional view of the plastic gear body of the present invention;
fig. 5 is the perspective view of the plastic gear body and the gear cover plate of the present invention.
In the figure: 1. a plastic gear body; 2. reinforcing ribs; 3. internal teeth; 4. pressing a point hole; 5. a groove; 6. a gear cover plate; 7. an embedded gear sheath; 8. a bearing; 9. spin riveting points; 10. and (4) external teeth.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a plastics gear structure for reducing injection moulding deformation, including plastic gear body 1, strengthening rib 2, internal tooth 3, pressure point hole 4, recess 5, gear cover plate 6, embedded gear sheath 7, bearing 8, rivet point 9 and external tooth 10 soon, the outside of plastic gear body 1 is provided with external tooth 10 all around, and be provided with internal tooth 3 all around in the middle of the inboard centre of plastic gear body 1, the inboard fixed mounting of plastic gear body 1 has strengthening rib 2 all around, and plastic gear body 1 up end reserves pressure point hole 4, and the both sides in pressure point hole 4 are equipped with recess 5, the bottom both sides fixed mounting of gear cover plate 6 has bearing 8, and the inboard bottom of bearing 8 is provided with and rivets point 9 soon, embedded gear sheath 7 and the rotatory chain of internal tooth 3, and the bottom mounting of embedded gear sheath 7 is on bearing 8.
The plastic gear body 1, the inner teeth 3, the pressure point holes 4, the grooves 5 and the outer teeth 10 are all of an integrated structure, the structural strength of the whole device is higher due to the integrated structure, and the overall structural strength of the plastic gear body 1 is improved;
24 reinforcing ribs 2 are arranged, the thickness of each reinforcing rib 2 is 1.3mm, the reinforcing ribs are uniformly distributed in the plastic gear body 1, and the reinforcing ribs 2 are connected in a divergent mode, so that roundness deformation before addendum circle trimming can be optimized;
the number of the inner teeth 3 is equal to that of the outer teeth 10, and the inner teeth 3 and the outer teeth 10 are arranged around the plastic gear body 1 at equal angles, so that the whole device is complete in structure and attractive in appearance;
the number of the pressure point holes 4 is 6, and the diameter of each pressure point hole 4 is 5.2mm, so that the gear press-fitting operation is facilitated;
the embedded gear sheath 7 is movably connected with the plastic gear body 1 and the gear cover plate 6, and the inner side threads of the embedded gear sheath 7 are matched with the outer side threads of the inner teeth 3, so that the plastic gear body 1 is convenient to detach and install, and the whole device is more flexible to use.
The working principle is as follows: when the plastic gear structure for reducing injection molding deformation is used, the gear is installed on an embedded gear sheath 7 of a plastic gear body 1 through a rotary riveting point 9, a bearing 8 with the model of 6006-2Z is installed on an YL102 die-casting aluminum shell in an interference mode to perform rotary motion, the shell is made of 39 inner teeth 3 and outer teeth 10, a left-handed involute gear with the reference circle diameter of 75.7131mm is formed, the main wall thickness is 3.5mm and is partially kept free, 24 reinforcing ribs 2 are connected in series to form a rib connecting tooth profile with the wall thickness of 1.5mm, 6 pressing point holes 4 with the diameter of 5.2mm are designed for gear press-fitting, and the content which is not described in detail in the specification belongs to the prior art which is well known to a person skilled in the art.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A plastic gear structure for reducing injection molding deformation, comprising a plastic gear body (1), a gear cover plate (6) and an embedded gear sheath (7), characterized in that: the outer side of the plastic gear body (1) is provided with external teeth (10) all around, and the inner side of the plastic gear body (1) is provided with internal teeth (3) all around in the middle of the centre, the inner side of the plastic gear body (1) is fixedly provided with reinforcing ribs (2) all around, and the upper end face of the plastic gear body (1) is reserved with pressure point holes (4), and the two sides of the pressure point holes (4) are provided with grooves (5), the bottom two sides of the gear cover plate (6) are fixedly provided with bearings (8), and the inner side bottom of the bearings (8) is provided with rotary riveting points (9), the embedded gear sheath (7) is rotationally linked with the internal teeth (3), and the bottom end of the embedded gear sheath (7) is fixed on the bearings (8.
2. A plastic gear structure for reducing injection molding set forth in claim 1 wherein: the plastic gear body (1) and the internal teeth (3), the pressure point holes (4), the grooves (5) and the external teeth (10) are all of an integrated structure.
3. A plastic gear structure for reducing injection molding set forth in claim 1 wherein: the number of the reinforcing ribs (2) is 24, the thickness of each reinforcing rib (2) is 1.3mm, the reinforcing ribs are uniformly distributed in the plastic gear body (1), and the reinforcing ribs (2) are connected in a divergent mode.
4. A plastic gear structure for reducing injection molding set forth in claim 1 wherein: the number of the internal teeth (3) is equal to that of the external teeth (10), and the internal teeth (3) and the external teeth (10) are arranged around the plastic gear body (1) at equal angles.
5. A plastic gear structure for reducing injection molding set forth in claim 1 wherein: the number of the pressure point holes (4) is 6, and the diameter of each pressure point hole (4) is 5.2 mm.
6. A plastic gear structure for reducing injection molding set forth in claim 1 wherein: the embedded gear sheath (7) is movably connected with the plastic gear body (1) and the gear cover plate (6), and the inner side threads of the embedded gear sheath (7) are matched with the outer side threads of the inner teeth (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021489133.7U CN212616176U (en) | 2020-07-25 | 2020-07-25 | Plastic gear structure for reducing injection molding deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021489133.7U CN212616176U (en) | 2020-07-25 | 2020-07-25 | Plastic gear structure for reducing injection molding deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212616176U true CN212616176U (en) | 2021-02-26 |
Family
ID=74720068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021489133.7U Active CN212616176U (en) | 2020-07-25 | 2020-07-25 | Plastic gear structure for reducing injection molding deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212616176U (en) |
-
2020
- 2020-07-25 CN CN202021489133.7U patent/CN212616176U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Jianjun Inventor before: Zheng Wenhui Inventor before: Li Jianjun |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240126 Address after: No. 126, Suhong West Road, Suzhou Industrial Park, Jiangsu Province 215021 Patentee after: BOSCH AUTOMOTIVE PRODUCTS (SUZHOU) Co.,Ltd. Country or region after: China Address before: 215131 Room 301, 3rd floor, Xiangrong building, No. 55, nantiancheng Road, high speed rail new town, Xiangcheng District, Suzhou City, Jiangsu Province Patentee before: Suzhou haizhibo Electronic Technology Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |