CN208417445U - A kind of ring gear - Google Patents
A kind of ring gear Download PDFInfo
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- CN208417445U CN208417445U CN201820759555.8U CN201820759555U CN208417445U CN 208417445 U CN208417445 U CN 208417445U CN 201820759555 U CN201820759555 U CN 201820759555U CN 208417445 U CN208417445 U CN 208417445U
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- ring
- gear
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- ring gear
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Abstract
The utility model discloses a kind of ring gears, metal gear ring and plastics gear ring including coaxial arrangement, and metal gear ring has the first ring gear, the second ring gear that plastics gear ring has the outer gear ring being arranged on the outside and inside is arranged in；The width of first ring gear is less than the width of metal gear ring, and the width of outer gear ring is equal to the width of the first ring gear, and width, the width of plastics gear ring of the second ring gear are equal with the width of metal gear ring, and the first ring gear and outer gear ring cooperate.Compared with prior art, ring gear bending strength provided by the utility model is bigger, weight is lighter, thickness is smaller.
Description
Technical field
The utility model relates to technical field of motors, the in particular to small hyper tape gear hub motor of bicycle, and in particular to
A kind of ring gear.
Background technique
The existing small hyper tape gear hub motor ring gear of bicycle directlys adopt metal machine and adds part, metallic sintered products, plastics
Part.However, metal gear ring and powder metallurgy gear ring weight are big, plastics gear ring intensity is inadequate.Therefore, it is necessary to provide a kind of new
Technical solution.
Utility model content
To solve the technical problems existing in the prior art, the utility model discloses a kind of ring gear, particular technique sides
Case is as described below:
A kind of ring gear, metal gear ring and plastics gear ring including coaxial arrangement, the metal gear ring have the first internal tooth
Circle, the second ring gear that the plastics gear ring has the outer gear ring being arranged on the outside and inside is arranged in；
The width of first ring gear is less than the width of the metal gear ring, and the width of the outer gear ring is equal to described the
The width of one ring gear, the width of second ring gear, the plastics gear ring width and the metal gear ring width phase
Deng first ring gear and outer gear ring cooperation.
Further, the side of the metal gear ring is provided with the first annular groove, and first annular groove is in described first
The root of gear ring is arranged.
Further, first annular groove and the metal gear ring are coaxially disposed.
Further, the other side of the metal gear ring is provided with the second annular groove, and second annular groove is close to described first
The root of ring gear is arranged.
Further, second annular groove and the metal gear ring are coaxially disposed.
Further, multiple through-holes, root of the through-hole close to first ring gear are provided on the metal gear ring
Portion's setting.
Further, the multiple through-hole is uniformly arranged on the metal gear ring.
Further, the length direction of the through-hole is along the axially extending of the metal gear ring.
Further, the gear tooth profile of first ring gear includes similar triangle and/or involute shape, and described the
The gear tooth profile of two ring gears includes involute shape.
Further, the metal gear ring includes one of machined piece, metallic sintered products and cold-extruded part or a variety of.
The utility model has the following beneficial effects:
1, ring gear provided by the utility model includes the metal gear ring and plastics gear ring of coaxial arrangement, is moulded with directlying adopt
The ring gear of materials and parts is compared, and the utility model uses metal insert gear ring, and annular gear teeth has compared with strong bending intensity.
2, ring gear provided by the utility model includes the metal gear ring and plastics gear ring of coaxial arrangement, and in the prior art
Directlying adopt metal machine adds the ring gear of part, metallic sintered products compared to light-weight.
3, metal gear ring has the first ring gear in the utility model, and plastics gear ring has outer gear ring and the second ring gear,
The side of first ring gear and outer gear ring complexed metal gear ring is provided with annular groove or through-hole, and guarantee is molded after the gear teeth are shunk and inserts
It does not depart from, guarantees gear-tooth strength.
The additional aspect and advantage of the utility model will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural schematic diagram of ring gear provided by the embodiment of the utility model；
Fig. 2 is the sectional view of ring gear provided by the embodiment of the utility model radially；
Fig. 3 is ring gear provided by the embodiment of the utility model along axial cross-sectional view；
Fig. 4 is the structural schematic diagram of the metal gear ring provided by the embodiment of the utility model with annular groove；
Fig. 5 is the metal gear ring provided by the embodiment of the utility model with annular groove along axial cross-sectional view；
Fig. 6 is the structural schematic diagram of the metal gear ring provided by the embodiment of the utility model with through-hole.
Wherein, 1- metal gear ring, the first ring gear of 11-, the first annular groove of 12-, the second annular groove of 13-, 14- through-hole, 2- plastics
Gear ring, 21- outer gear ring, the second ring gear of 22-.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " on ", "lower", "top", "bottom", "inner", "outside" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation
Construction and operation, therefore should not be understood as limiting the present invention.The meaning of " multiple " in the description of the present invention,
It is two or more, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, can make to be fixedly connected, may be a detachable connection, or integral；It can be
Mechanical connection, is also possible to be electrically connected；It can make to be connected directly, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element.It for the ordinary skill in the art, can basis
Concrete condition understands the concrete meaning of above-mentioned term in the present invention.
Embodiment:
Ring gear directlys adopt metalwork, metallic sintered products or plastic part mostly in the prior art, however, metalwork, powder
Ring gear weight made of last metallurgy part is big, ring gear intensity made of plastic part is inadequate, to solve the above problems, the present embodiment
The ring gear of offer has taken into account the demand to weight and intensity.
Fig. 1 is the structural schematic diagram of ring gear provided by the embodiment of the utility model, and Fig. 2 is that the utility model embodiment mentions
The sectional view of the ring gear of confession radially, referring to Fig.1 and 2, ring gear provided in this embodiment includes metal gear ring 1 and modeling
Expect that gear ring 2, metal gear ring 1 and plastics gear ring 2 are coaxially disposed.Wherein, metal gear ring 1 include machined piece, metallic sintered products and
One of cold-extruded part is a variety of.Plastics gear ring 2 is along metal-toothed in the section shape of the part with outer gear ring radially
The circumferential direction of circle 1 is equally distributed wavy, radial dipping and heaving of the wave along metal gear ring 1.
It is interior that above structure reduces ring gear provided in this embodiment compared with the ring gear for directlying adopt plastic part
Gear ring thickness increases the bending strength of annular gear teeth；Compared with directlying adopt metal machine and adding the ring gear of part, metallic sintered products
Alleviate ring gear overall weight.
Please continue to refer to Fig. 2, metal gear ring 1 has the first ring gear 11, and plastics gear ring 2 has the external tooth of setting on the outside
Circle 21 and the second ring gear 22 that inside is set.The width of first ring gear 11 is less than the width of metal gear ring 1, outer gear ring 21
Width be equal to the width of the first ring gear 11, the width of the second ring gear 22, the width of plastics gear ring 2 and metal gear ring 1
Width is equal, and the first ring gear 11 cooperates with outer gear ring 21.
Fig. 3 is ring gear provided by the embodiment of the utility model along axial cross-sectional view, referring to figure 3., the first ring gear
11 width is less than the width of metal gear ring 1, and the width of the second ring gear 22 is equal to the width of metal gear ring 1.Due to metal-toothed
The width of first ring gear 11 of circle 1 is less than the width of the second ring gear 22 of plastics gear ring 2, the first internal tooth of metal gear ring 1
Circle 11 is coated by plastics gear ring 2.
Fig. 4 is the structural schematic diagram of the metal gear ring provided by the embodiment of the utility model with annular groove, referring to figure 4., the
One ring gear 11 has multiple gear teeth, and optionally, the gear tooth profile of the first ring gear 11 is similar triangle；Optionally, first
The gear tooth profile of ring gear 11 is involute shape；Optionally, the gear tooth profile of the first ring gear 11 is similar to triangle and gradually
The combination of involute shape, according to the difference of the neighbouring relations and quantity of the similar triangle gear teeth and the involute shape gear teeth, first
Ring gear 11 can show different shapes.It is uniformly distributed on the inner peripheral surface of metal gear ring 1 to have one group of first ring gear 11.It needs
It is noted that the quantity of the first ring gear 11 is also possible to multiple groups (not shown), every group of first ring gear 11 is along axial equal
Even is laid on the inner peripheral surface of metal gear ring 1, and the shape of the first ring gear 11 can be any one in straight-tooth, helical teeth etc.
Kind or combinations thereof.To guarantee that the first ring gear 11 is engaged with outer gear ring 21, outer gear ring 21 and the metal gear ring 1 of plastics gear ring 2
First ring gear 11 should match in quantity, form, position distribution.
Optionally, the second ring gear 22 has multiple gear teeth, and the gear tooth profile of the second ring gear 22 is involute shape.
Fig. 5 is the metal gear ring provided by the embodiment of the utility model with annular groove along axial cross-sectional view, referring to figure 5.,
In a kind of preferred embodiment of the present embodiment, the side of metal gear ring 1 is provided with the first annular groove 12, metal gear ring 1
The other side is provided with the second annular groove 13, and the first annular groove 12 and the second annular groove 13 are close to the root setting of the first ring gear 11.The
One annular groove 12, the second annular groove 13 are coaxially disposed with metal gear ring 1.
Please continue to refer to Fig. 4 and Fig. 5, plastics can be filled into the first annular groove 12, the second annular groove 13 in injection moulding process, thus
The radial and axial upper formation position limiting structure of ring gear guarantees the gear teeth so that the injection molding gear teeth do not depart from after shrinking with inserts
Intensity.
It should be pointed out that Fig. 5 shows that the first annular groove 12, the second annular groove 13 are right on the two sides of metal gear ring 1
It the case where claiming setting, according to actual needs can also be by the first annular groove 12, the second ring on the two sides for being located at metal gear ring 1
Slot 13 is arranged to asymmetrical situation.
In a kind of optional embodiment of the present embodiment, the side of metal gear ring 1 is provided with the first annular groove 12, and first
Annular groove 12 is arranged close to the root of the first ring gear 11.First annular groove 12 is coaxially disposed with metal gear ring 1.
In a kind of optional embodiment of the present embodiment, the other side of metal gear ring 1 is provided with the second annular groove 13, the
Two annular grooves 13 are arranged close to the root of the first ring gear 11.Second annular groove 13 is coaxially disposed with metal gear ring 1.
Embodiment:
Fig. 6 is the structural schematic diagram of the metal gear ring provided by the embodiment of the utility model with through-hole, please refers to Fig. 6, this
The difference of ring gear and above-described embodiment that embodiment provides is, is provided with multiple through-holes in the present embodiment on metal gear ring 1
14, through-hole 14 is arranged close to the root of the first ring gear 11.The length direction of through-hole 14 is axially extending along metal gear ring 1, protects
The card injection molding gear teeth do not depart from after shrinking with inserts, guarantee gear-tooth strength.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means particular features, structures, materials, or characteristics described in conjunction with this embodiment or example
It is contained at least one embodiment or example of the utility model.In the present specification, schematic expression of the above terms
It need not be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
What can be combined in any suitable manner in one or more embodiment or examples.In addition, those skilled in the art can will be in this specification
The different embodiments or examples of description are engaged and are combined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
It is interior above-described embodiment can be changed, modifications and variations.
Claims (10)
1. a kind of ring gear, which is characterized in that metal gear ring (1) and plastics gear ring (2) including coaxial arrangement, the metal-toothed
Enclosing (1) has the first ring gear (11), and the plastics gear ring (2) has the outer gear ring (21) being arranged on the outside and is arranged in inside
The second ring gear (22)；
The width of first ring gear (11) is less than the width of the metal gear ring (1), the width etc. of the outer gear ring (21)
In the width of first ring gear (11), the width of second ring gear (22), the width of the plastics gear ring (2) and institute
The width for stating metal gear ring (1) is equal, and first ring gear (11) and the outer gear ring (21) cooperate.
2. ring gear according to claim 1, which is characterized in that the side of the metal gear ring (1) is provided with the first ring
Slot (12), first annular groove (12) are arranged close to the root of first ring gear (11).
3. ring gear according to claim 2, which is characterized in that first annular groove (12) and the metal gear ring (1)
Coaxial arrangement.
4. ring gear according to claim 1, which is characterized in that the other side of the metal gear ring (1) is provided with second
Annular groove (13), second annular groove (13) are arranged close to the root of first ring gear (11).
5. ring gear according to claim 4, which is characterized in that second annular groove (13) and the metal gear ring (1)
Coaxial arrangement.
6. ring gear according to claim 1, which is characterized in that be provided with multiple through-holes on the metal gear ring (1)
(14), the through-hole (14) is arranged close to the root of first ring gear (11).
7. ring gear according to claim 6, which is characterized in that the multiple through-hole (14) is in the metal gear ring (1)
On be uniformly arranged.
8. ring gear according to claim 6, which is characterized in that the length direction of the through-hole (14) is along the metal-toothed
Enclose the axially extending of (1).
9. ring gear according to claim 1, which is characterized in that the gear tooth profile of first ring gear (11) includes class
Like triangle and/or involute shape, the gear tooth profile of second ring gear (22) includes involute shape.
10. ring gear according to claim 1, which is characterized in that the metal gear ring (1) includes machined piece, powder
One of metallurgical part and cold-extruded part are a variety of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820759555.8U CN208417445U (en) | 2018-05-21 | 2018-05-21 | A kind of ring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820759555.8U CN208417445U (en) | 2018-05-21 | 2018-05-21 | A kind of ring gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208417445U true CN208417445U (en) | 2019-01-22 |
Family
ID=65115211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820759555.8U Active CN208417445U (en) | 2018-05-21 | 2018-05-21 | A kind of ring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208417445U (en) |
-
2018
- 2018-05-21 CN CN201820759555.8U patent/CN208417445U/en active Active
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