CN209228957U - Inner gear member and Inside gear drive structure - Google Patents
Inner gear member and Inside gear drive structure Download PDFInfo
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- CN209228957U CN209228957U CN201821507862.3U CN201821507862U CN209228957U CN 209228957 U CN209228957 U CN 209228957U CN 201821507862 U CN201821507862 U CN 201821507862U CN 209228957 U CN209228957 U CN 209228957U
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Abstract
The utility model provides a kind of inner gear member, and the inner gear member (260) includes at least three end faces along thickness extending direction: first end face (262), second end face (263) and third end face (267)；Radially ecto-entad includes sequentially connected ring gear portion (261), interconnecting piece (264), retainer plate portion (265) to the inner gear member (260)；Ring gear portion (261) includes ring gear, and the ring gear is located between first end face (262) and second end face；Connecting portion is between second end face (263) and third end face (267)；Retainer plate portion (265) includes driven shaft mounting hole (268).The utility model additionally provides a kind of Inside gear drive structure comprising above-mentioned inner gear member.Since the engagement of big pinion gear is using internal messing in the utility model, two contact ratio and overlap ratios are higher than external toothing, therefore transmission is more stable, and noise is lower.
Description
Technical field
The utility model relates to transmission technical fields, and in particular, to a kind of inner gear member and Inside gear drive structure.
Background technique
Single-phase series motor revolving speed for utensils such as jetting machines is generally 12000-22000rpm, in order to further
Cost is reduced it is also possible to motor speed is further increased.So high revolving speed motor cannot directly connect with pump, and centre must
Must first connect a deceleration device be applied at present jetting machine transmission device have it is following several:
The first is cylindrical straight gear external toothing deceleration device, and patent CN201015772 and CN100357591 disclose this
The drive mechanism of class external toothing.The shortcomings that this external toothing is driven is:
1 since for external toothing, the total number of teeth in engagement that large and small gear simultaneously participates in is few (contact ratio and overlap ratio is less than 1), gear drive
Continuity, stationarity are poor, and noise is higher；
2 lubricating grease can throw away gear surface since centrifugal force acts on, and lead to lubrication failure, gear wear, eventually result in
Noise and vibration, whole system or motor failure.
3 offset distances of the large and small gear centre away from larger namely motor and pump are larger, have unfavorable factor to machine shape design.
Second is planetary gear train deceleration device structural schematic diagram, and patent US7874815 discloses this planetary gear train
Drive mechanism.The shortcomings that this transmission device, is:
Although 1, planetary gear and ring gear are internal messings in transmission device, central pinion engages also with planetary gear
External toothing, since two gear compound graduation circular diameters are small, the number of teeth is also few, the engagement of two gears be also it is discontinuous, stationarity is poor, makes an uproar
Sound is higher.
2, it since planet gear transmission gear Meshing Pair is more (at least 4), in addition to it can generate loud noise, can also generate
Biggish frictional heat causes transmission efficiency lower；
3, planet gear transmission structure is more complex, higher to required precision, higher cost；
The third is Inside gear drive device, and patent document AU2003255409A1 and CN201081005Y disclose two kinds
The transmission device of internal messing.The transmission device of both internal messings is all to have following defects that
The circumferential direction and axially position of gear are positioned by thrust ball bearing.This positioning is a kind of insecure
Positioning, because the metal (upper piece of thrust bearing can separate under the action of no external force, this positioning method exists
There are the following problems in actual use: when machine is in unloaded or starting moment, since the pressure between bearing fluctuating plate compares
Small (the substantially precompression of plunger spring), the power that pinion gear is applied to gear wheel in the running, which exists, makes two bearings piece leave original
The position come, leads to bearing damage, while also size poor gear engagement can be made to lead to gear wear, causes this machine reliable
Property is poor, and the service life is short.
Utility model content
For the defects in the prior art, the purpose of the utility model is to provide a kind of inner gear members and Inside gear drive knot
Structure.
The inner gear member includes at least three end faces: first end face, second end face and third along thickness extending direction
End face；
Radially ecto-entad includes sequentially connected ring gear portion, interconnecting piece, retainer plate portion to the inner gear member；Internal tooth
Circle portion includes ring gear, and the ring gear is between first end face and second end face；Connecting portion is in second end face and third
Between end face；Retainer plate portion includes driven shaft mounting hole；
The inner space of the driven shaft mounting hole is interconnected with the inner space of receiving hole or is not connected to.
Preferably, uniform pore openings are provided on the interconnecting piece, multiple uniform pore openings are arranged along interconnecting piece circumferential direction, institute
It states uniform pore openings and extends through the inner space that interconnecting piece is connected to receiving hole from second end face.
The utility model additionally provides a kind of Inside gear drive structure, includes transmission case device and electric machine assembly；The biography
Dynamic case apparatus includes above-mentioned inner gear member；It is circumferentially opposed in the driven mounting hole to be fixedly installed with driven shaft；
Electric machine assembly includes motor shaft, and motor shaft is relatively fixed in circumferential direction to be equipped with external gear, the external gear
Bias engagement is mounted in ring gear portion, and speed changing structure is collectively formed in external gear and inner gear member；
The motor shaft, driven shaft have been separately equipped with first bearing, second bearing.
Preferably, the transmission case device includes cabinet, and the electric machine assembly includes electric machine support, cabinet and electric machine support
It is fastenedly connected and forms article containing space in inside, the inner gear member is mounted in article containing space.
Preferably, the driven mounting hole and receiving hole are interconnected, and driven shaft extends through driven peace along its length
Hole is filled to reach in receiving hole；
The second bearing includes big bearing and small bearing, and big bearing, small bearing are located at retainer plate portion along thickness
The two sides of extending direction.
Preferably, it is provided with bearing chamber on the electric machine support, includes for accommodating small bearing in multiple bearing chambers
Second bearing room and the first bearing room for accommodating first bearing.
Preferably, the small bearing and first bearing misplace arrangement in radial direction and/or axial direction；
In projection in axial direction, small bearing is located in whole or in part within the outer profile of ring gear.
Preferably, the big bearing is mounted in the cabinet of transmission case device.
Preferably, it is provided with positioning convex platform on the electric machine support, is provided on cabinet and matches with the positioning convex platform
Positioning groove；
Electric machine support and cabinet are fastenedly connected through positioning convex platform with after positioning groove by the fastening screw of setting；
The first cutout unit is provided on the positioning convex platform.
Preferably, the second cutout unit, second cutout unit and external gear phase are provided on the wall surface of second bearing room
Match.
Compared with prior art, the utility model have it is following the utility model has the advantages that
1, since the engagement of big pinion gear is using internal messing in the utility model, two contact ratio and overlap ratios than are nibbled outside
Height is closed, therefore transmission is more stable, noise is lower；
2, simultaneously, internal messing to be not easy to fly away from gear table because of the effect of centrifugal force coated in the grease in gear tooth slot
Face, therefore engagement lubricity is more preferable, noise is also lower, longer life expectancy；
3, moreover, the axis that is located through of gear is directly targeted in two bearings, positioning accuracy height, good reliability, it is ensured that
The position accuracy demand of transmission preferably ensure that the requirement of low noise, long-life.
4, spatially position two gear centres away from two bearings dislocation arrangement, and the dexterously portion of the bearing on gear shaft
Divide or entirely fall in ring gear, so that the increase of axial length will not be caused dislocation.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon:
Fig. 1 is that assembling stereogram when motor pump unit is made in the application of Inside gear drive structure；
Fig. 2 is motor pump unit front section view；
Fig. 3 be motor pump unit front view A-A to cross-sectional view；
Fig. 4 is inner gear member front view；
Fig. 5 is inner gear member cross-sectional view in the radial direction.
It is shown in figure:
100 interconnecting piece 264 of high pressure pump assembly
110 retainer plate portion 265 of plunger
120 uniform pore openings 266 of pump intake
130 third end face 267 of pump discharge
The driven shaft mounting hole 268 of transmission case device 200
210 fastening screw 270 of thrust bearing
220 electric machine assembly 300 of swash plate
230 electric machine support 310 of cabinet
Big 240 second bearing room 311 of bearing
250 positioning convex platform 312 of driven shaft
260 first cutout unit 313 of inner gear member
The small bearing 320 in ring gear portion 261
262 external gear 330 of first end face
263 first bearing 340 of second end face
Motor shaft 350
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.
These are all within the protection scope of the present invention.
In the description of the present invention, it should be understood that term " on ", "lower", "front", "rear", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "top", "bottom", "inner", "outside" be orientation based on the figure or
Positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the device or member of indication or suggestion meaning
Part must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
As shown in Figure 4, Figure 5, inner gear member 260 provided by the utility model includes at least three ends along thickness extending direction
Face: first end face 262, second end face 263 and third end face 267；The inner gear member 260 radially ecto-entad include according to
Ring gear portion 261, interconnecting piece 264, the retainer plate portion 265 of secondary connection；Ring gear portion 261 includes ring gear, the ring gear position
Between first end face 262 and second end face 263；Connecting portion is between second end face 263 and third end face 267；Retainer plate
Portion 265 includes driven shaft mounting hole 268；The inner space phase of the inner space of the driven shaft mounting hole 268 and receiving hole
It is intercommunicated or be not connected to.Preferably, uniform pore openings 266 are provided on the interconnecting piece 264, multiple uniform pore openings 266 are along connection
264 circumferential direction of portion arrangement, the uniform pore openings 266 extend through interconnecting piece 264 from second end face 263 and are connected to receiving hole
Inner space.
The utility model additionally provides a kind of Inside gear drive structure, includes transmission case device 200 and electric machine assembly 300；
The transmission case device 200 includes above-mentioned inner gear member 260；In the driven mounting hole it is circumferentially opposed be fixedly installed with it is driven
Axis 250；Electric machine assembly 300 includes motor shaft 350, and motor shaft 350 is relatively fixed in circumferential direction to be equipped with external gear 330,
The eccentric engagement of the external gear 330 is mounted in ring gear portion 261, and speed change knot is collectively formed in external gear 330 and inner gear member 260
Structure, in embodiment, external gear 330 is as driving gear, and therefore, the speed changing structure forms slowing-down structure；But it actually answers
In, when inner gear member 260 is as driving gear, the speed changing structure also may be constructed accelerating structure.The motor shaft
350, driven shaft 250 has been separately equipped with first bearing 340, second bearing.By the setting of above-mentioned bearing, effectively prevent using
Thrust bearing and metal (upper piece is separated under the action of no external force, thereby reduce the abrasion of bearing.
As shown in Figure 1 and Figure 2, the transmission case device 200 includes cabinet 230, and the electric machine assembly 300 includes motor branch
Frame 310, cabinet 230 and electric machine support 310 are fastenedly connected and form article containing space in inside, and the inner gear member 260 is mounted on
In article containing space.Preferably, the driven mounting hole and receiving hole are interconnected, and driven shaft 250 extends through along its length
Driven mounting hole reaches in receiving hole；The second bearing includes big bearing 240 and small bearing 320, big bearing 240, small bearing
320 are located at retainer plate portion 265 along the two sides along thickness extending direction.It is provided with bearing chamber on the electric machine support 310, it is more
It include for accommodating the second bearing room 311 of small bearing 320 and the first axle for accommodating first bearing 340 in a bearing chamber
Hold room.Preferably, the small bearing 320 and first bearing 340 misplace arrangement in radial direction and/or axial direction；Along axis
To in the projection in direction, small bearing 320 is in whole or in part within the outer profile of ring gear.The big bearing 240 is mounted on
In the cabinet 230 of transmission case device 200.That is, in order to meet compact-sized requirement, while in order to guarantee big pinion gear
Center away from needs, first bearing 340 of the small bearing 320 in axial direction and motor shaft 350 at external gear 330 on driven shaft 250
Dislocation arrangement, and small bearing 320 is dexterously partly or entirely fallen into ring gear, so that axial direction will not be caused dislocation
The increase of length.
As shown in Fig. 2, be provided with positioning convex platform 312 on the electric machine support 310, be provided on cabinet 230 with it is described fixed
The positioning groove that position boss 312 matches；The fastening screw 270 of setting is after positioning convex platform 312 and positioning groove by motor
Bracket 310 is fastenedly connected with cabinet 230；The first cutout unit 313 is provided on the positioning convex platform 312, i.e. electric machine support 310 exists
There is excision radial at two, to reduce wanting for size in positioning on the positioning convex platform 312 of 270 junction of fastening screw
It asks.Preferably, as shown in figure 3, being provided with the second cutout unit on the wall surface of second bearing room 311, second cutout unit and outer
Gear 330 matches.When the insufficient space between 311 outer wall of second bearing room and ring gear of electric machine support 310 is outer to place
When gear 330, corresponding excision can be done to guarantee the needs of installation to 311 outer wall of second bearing room.
In practical application, Inside gear drive structure and the assembly of high pressure pump assembly 100 are used, and electric machine assembly 300 is used as power
Structure is generated, transmission case device 200 transfers power on swash plate 220 as reducing transmission structure, and swash plate 220 is equipped with thrust
Bearing 210 pushes plunger 110 to move reciprocatingly when swash plate 220 rotates, and then drives fluid to flow to from pump intake 120 and pump out
Mouth 130.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (10)
1. a kind of inner gear member, it is characterised in that: the inner gear member (260) includes at least three ends along thickness extending direction
Face: first end face (262), second end face (263)；Third end face (267)；
Radially ecto-entad includes sequentially connected ring gear portion (261), interconnecting piece (264), consolidates the inner gear member (260)
Determine circle portion (265)；Ring gear portion (261) includes ring gear, and the ring gear is located at first end face (262) and second end face
(263) between；Connecting portion is between second end face (263) and third end face (267)；Retainer plate portion (265) includes driven
Shaft mounting hole (268)；
The inner space of the driven shaft mounting hole (268) is interconnected with the inner space of receiving hole or is not connected to.
2. inner gear member according to claim 1, which is characterized in that be provided with uniform pore openings on the interconnecting piece (264)
(266), multiple uniform pore openings (266) are arranged along interconnecting piece (264) circumferential direction, and the uniform pore openings (266) are from second end face
(263) inner space that interconnecting piece (264) is connected to receiving hole is extended through at.
3. a kind of Inside gear drive structure, which is characterized in that include transmission case device (200) and electric machine assembly (300)；The biography
Dynamic case apparatus (200) include inner gear member (260) described in any one of right 1 to 2；It is circumferentially opposed in the driven mounting hole
It is fixedly installed with driven shaft (250)；
Electric machine assembly (300) includes motor shaft (350), and motor shaft (350) is relatively fixed in circumferential direction to be equipped with external gear
(330), the eccentric engagement of the external gear (330) is mounted on ring gear portion (261), external gear (330) and inner gear member (260)
Speed changing structure is collectively formed；
The motor shaft (350), driven shaft (250) have been separately equipped with first bearing (340), second bearing.
4. Inside gear drive structure according to claim 3, which is characterized in that the transmission case device (200) includes case
Body (230), the electric machine assembly (300) include electric machine support (310), and cabinet (230) and electric machine support (310) are fastenedly connected simultaneously
Article containing space is formed in inside, the inner gear member (260) is mounted in article containing space.
5. Inside gear drive structure according to claim 4, which is characterized in that the driven mounting hole and receiving hole are mutual
Connection, driven shaft (250) extend through driven mounting hole along its length and reach in receiving hole；
The second bearing includes big bearing (240) and small bearing (320), and big bearing (240), small bearing (320) are located at
Retainer plate portion (265) is along the two sides of thickness extending direction.
6. Inside gear drive structure according to claim 5, which is characterized in that be provided on the electric machine support (310)
Bearing chamber, include in multiple bearing chambers for accommodate the second bearing room (311) of small bearing (320) with for accommodating first axle
Hold the first bearing room of (340).
7. Inside gear drive structure according to claim 6, which is characterized in that the small bearing (320) and first bearing
(340) misplace arrangement in radial direction and/or axial direction；
In projection in axial direction, small bearing (320) is in whole or in part within the outer profile of ring gear.
8. Inside gear drive structure according to claim 5, which is characterized in that the big bearing (240) is mounted on transmission
In the cabinet (230) of case apparatus (200).
9. Inside gear drive structure according to claim 4, which is characterized in that be provided on the electric machine support (310)
Positioning convex platform (312) is provided with the positioning groove to match with the positioning convex platform (312) on cabinet (230)；
The fastening screw (270) of setting is behind positioning convex platform (312) and positioning groove by electric machine support (310) and cabinet
(230) it is fastenedly connected；
The first cutout unit (313) are provided on the positioning convex platform (312).
10. Inside gear drive structure according to claim 6, which is characterized in that set on the wall surface of second bearing room (311)
It is equipped with the second cutout unit, second cutout unit matches with external gear (330).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821507862.3U CN209228957U (en) | 2018-09-14 | 2018-09-14 | Inner gear member and Inside gear drive structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821507862.3U CN209228957U (en) | 2018-09-14 | 2018-09-14 | Inner gear member and Inside gear drive structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228957U true CN209228957U (en) | 2019-08-09 |
Family
ID=67498676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821507862.3U Active CN209228957U (en) | 2018-09-14 | 2018-09-14 | Inner gear member and Inside gear drive structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228957U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209809A (en) * | 2018-09-14 | 2019-01-15 | 上海亿力电器有限公司 | motor pump unit |
-
2018
- 2018-09-14 CN CN201821507862.3U patent/CN209228957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209809A (en) * | 2018-09-14 | 2019-01-15 | 上海亿力电器有限公司 | motor pump unit |
| CN109209809B (en) * | 2018-09-14 | 2024-01-05 | 上海亿力电器有限公司 | Motor pump unit |
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