CN209692515U - The assembling structure of Gearbox and motor shaft - Google Patents
The assembling structure of Gearbox and motor shaft Download PDFInfo
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- CN209692515U CN209692515U CN201920419782.0U CN201920419782U CN209692515U CN 209692515 U CN209692515 U CN 209692515U CN 201920419782 U CN201920419782 U CN 201920419782U CN 209692515 U CN209692515 U CN 209692515U
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- steel bushing
- cabinet
- motor shaft
- stepped hole
- bearing
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Abstract
The utility model relates to the assembling structures of a kind of Gearbox and motor shaft, cabinet including reduction gearbox, motor shaft, the inner ring that bearing and bearing are installed on the motor shaft cooperates, the cabinet is equipped with a stepped hole, a steel bushing is fixed in the large diameter hole of the stepped hole, the steel bushing resists the shaft shoulder of stepped hole, the outer ring clearance fit of the bearing is in the axis hole of steel bushing, one end that the steel bushing resists the stepped hole shaft shoulder is equipped with the flange extended to axle center, one is equipped between the flange and the outer ring of bearing for compensating the wave spring of bearing clearance, the motor shaft ends from stepped hole diameter holes in extend into cabinets cavity.Being connected firmly for assembling structure stabilization, steel bushing and Gearbox, also avoids the axial float of motor shaft, reduces vibration and noise.
Description
Technical field
The utility model relates to the assembly field of auto parts and components, in particular to the dress of a kind of Gearbox and motor shaft
Distribution structure.
Background technique
The motor of automobile generally can not be used to directly drive by motor shaft output power, but because of the revolving speed of motor shaft height
Automobile, but need to output power again after reduction gearbox is slowed down.Currently, the cabinet of motor shaft and reduction gearbox is usually
By bearing, motor is pivotally supported on the cabinet of reduction gearbox, the bearing of bearing, which is directly installed on Gearbox, to be arranged
Mounting hole in.But the motor shaft thus assembled can be influenced by bearing clearance, and during the work time, axial direction can occur for motor shaft
Play, generate vibration and noise, affect the NVH performance of automobile.
Summary of the invention
The purpose of this utility model is in view of the deficiencies of the prior art, to provide the assembly of a kind of Gearbox and motor shaft
Structure, stable structure avoid the axial float of motor shaft, and the connection of steel bushing and Gearbox is also secured.
The technical solution of the utility model is: a kind of assembling structure of Gearbox and motor shaft, including reduction gearbox
Cabinet, motor shaft, the inner ring that bearing and bearing are installed on the motor shaft cooperate, and the cabinet is equipped with a stepped hole, the rank
A steel bushing is fixed in the large diameter hole in terraced hole, the steel bushing resists the shaft shoulder of stepped hole, and the outer ring clearance fit of the bearing exists
In the axis hole of steel bushing, one end that the steel bushing resists the stepped hole shaft shoulder is equipped with the flange extended to axle center, the flange and bearing
Outer ring between be equipped with one for compensating the wave spring of bearing clearance, the motor shaft ends from stepped hole diameter holes in prolong
It protrudes into cabinets cavity.
The steel bushing excircle is symmetrically arranged with two tangent planes circumferentially limited, and the steel bushing excircle is axial around being equipped with one
The groove of limit, the steel bushing are fixed in the large diameter hole of stepped hole by the die cast of cabinet.
The steel bushing is interference fitted in the large diameter hole of cabinet stepped hole by cold pressing, and steel bushing and cabinet stepped hole is outer
The even circumferential of side one end fits is distributed with three roulettes, and each roulette is in the blind hole being axially arranged, each roulette
The middle latch that is interference fitted respectively is to steel bushing circumferential direction and axial limiting.
The even circumferential that the lateral ends of the steel bushing and cabinet stepped hole cooperate is distributed with three roulettes.
The wave spring is made by spring steel.
By adopting the above technical scheme: cabinet, motor shaft including reduction gearbox install bearing and bearing on the motor shaft
Inner ring cooperation, the cabinet are equipped with a stepped hole, are fixed with a steel bushing in the large diameter hole of the stepped hole, the steel bushing resists rank
The shaft shoulder in terraced hole, for the outer ring clearance fit of the bearing in the axis hole of steel bushing, the steel bushing resists one end of the stepped hole shaft shoulder
A wave spring for being used to compensate bearing clearance is equipped with equipped with the flange extended to axle center, between the flange and the outer ring of bearing,
The motor shaft ends from stepped hole diameter holes in extend into cabinets cavity.The assembling structure stablize, bearing outer ring with
Wave spring between steel bushing flange can push against bearing outer ring compensation bearing clearance, realize the axial restraint of motor shaft, avoid
The axial float of motor shaft reduces vibration and the noise of motor shaft, ensure that the stable delivery of power, improve automobile
NVH performance.Meanwhile it being fixed on the hardness height of the steel bushing in the stepped hole of cabinet, the flange of steel bushing is located at wave spring and reduction gearbox
Cabinet between, avoid directly contacting for wave spring and cabinet, it is therefore prevented that the abrasion deformation of cabinet, wave spring and steel bushing are matched
It gets togather.
The steel bushing excircle is symmetrically arranged with two tangent planes circumferentially limited, and the steel bushing excircle is axial around being equipped with one
The groove of limit, the steel bushing are fixed in the large diameter hole of stepped hole by the die cast of cabinet.Form the cabinet of reduction gearbox
When, it needs that steel bushing is first heated to certain temperature, then the steel bushing after heating is fixed on the mold of die cast cabinet, Zhi Houzai
Aluminum water and cooling are injected into mold, are achieved in the molding of cabinet.During die cast, aluminum water can be filled to outside steel bushing
In two tangent planes and groove of circumference, steel bushing periphery sufficiently to be wrapped up, steel bushing will be secured firmly on cabinet after die casting is cooling,
And the groove of steel bushing forms the axial limiting to steel bushing, two tangent planes of steel bushing form the circumferential direction limit to steel bushing, even if
The case where steel bushing and cabinet are loosened because heated, steel bushing can be still securely fixed in the stepped hole of cabinet, guarantee steel bushing
With being stably connected with for cabinet.Alternatively, the steel bushing by cold pressing be interference fitted in the large diameter hole of cabinet stepped hole, and steel bushing with
The even circumferential of the lateral ends cooperation of cabinet stepped hole is distributed with three roulettes, and each roulette is in being axially arranged
Blind hole is interference fitted a latch to steel bushing circumferential direction and axial limiting in each roulette respectively.The cold pressing interference of steel bushing and cabinet
Cooperation assembly is simple, and roulette for blind hole and latch are together formed and limited to stablizing for steel bushing, though steel bushing with
In the case that cabinet occurs loosening due to heated, being stably connected with for steel bushing and cabinet also still can guarantee.The steel bushing and cabinet rank
The even circumferential of the lateral ends cooperation in terraced hole is distributed with three roulettes, and three roulettes can realize the stabilization to steel bushing
Limit.
The wave spring is made by spring steel, and spring steel has high tensile strength, elastic limit and fatigue strength, i.e.,
Make also still can effectively keep elasticity, long service life in long-term vibration environment.
The assembling structure of this Gearbox and motor shaft is stablized, and the wave spring being provided with can push against bearing outer ring compensation
Bearing clearance realizes the axial restraint of motor shaft, avoids the axial float of motor shaft, reduces the vibration of motor shaft and makes an uproar
Sound improves the NVH performance of automobile.Meanwhile the steel bushing of setting avoids wave spring and contacts with the direct of cabinet, wave spring and steel
The cooperation of set is more preferable.Moreover, the connection of steel bushing and gear box is also stable and firm.
The utility model is described in further detail with specific embodiment with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is a kind of schematic diagram of embodiment of the utility model；
Fig. 3 is the A-A cross-sectional view of Fig. 2；
Fig. 4 is the schematic diagram of the utility model another kind embodiment；
Fig. 5 is the B-B cross-sectional view of Fig. 4.
In attached drawing, 1 is cabinet, and 1-1 is stepped hole, and 2 be steel bushing, and 2-1 is tangent plane, and 2-2 is groove, and 2-3 is flange, 2-
4 be axis hole, and 3 be wave spring, and 4 be bearing, and 5 be motor shaft, and 6 be roulette, and 7 be latch.
Specific embodiment
Embodiment one, referring to Fig. 1 to Fig. 3, a kind of assembling structure of Gearbox and motor shaft, the case including reduction gearbox
Body 1, motor shaft 5, cabinet 1 pass through aluminum water die cast, and the inner ring of installation bearing 4 and bearing 4 cooperates on the motor shaft 5, electricity
The spline of 1 end of arbor setting installation reduction gearbox power input gear.The cabinet 1 is equipped with a stepped hole 1-1, the stepped hole
1-1, which is located in the large diameter hole of 1 outboard end of cabinet, is fixed with a steel bushing 2, and the steel bushing 2 resists the shaft shoulder of stepped hole 1-1, the shaft shoulder
To one end axial limiting of steel bushing 2.2 excircle of steel bushing is symmetrically arranged with the two tangent plane 2-1 circumferentially limited, the steel bushing 2
Excircle is fixed on stepped hole 1-1 by the die cast of cabinet 1 around the groove 2-2 equipped with an axial limiting, the steel bushing 2
Large diameter hole in.When forming the cabinet 1 of reduction gearbox, need that steel bushing 2 is first heated to certain temperature, then the steel bushing 2 after heating is consolidated
It is scheduled on the mold of die cast cabinet 1, injects aluminum water and cooling into mold again later, be achieved in the molding of cabinet 1.In
During die cast, aluminum water can be filled into the two tangent plane 2-1 and groove 2-2 of 2 excircle of steel bushing, and 2 periphery of steel bushing is filled
Subpackage is wrapped up in, and steel bushing 2 will be secured firmly on cabinet 1 after die casting is cooling, and the groove 2-2 of steel bushing 2 forms the axis to steel bushing 2
To limit, two tangent plane 2-1 of steel bushing 2 form the circumferential direction limit to steel bushing 2, the fixing on cabinet 1 of steel bushing 2.Although
Steel bushing 2 is different from the material of cabinet 1, the speed of expanded by heating is different, it is understood that there may be the case where loosening, but steel bushing 2 is cut flat with
Face 2-1 and groove 2-2 still can guarantee being stably connected with for steel bushing 2 and cabinet 1 when loosening, and steel bushing 2 and the connection of cabinet 1 are steady
It is fixed.For the outer ring clearance fit of the bearing 4 in the axis hole 2-4 of steel bushing 2, the steel bushing 2 resists one end of the stepped hole 1-1 shaft shoulder
One is equipped with equipped with the flange 2-3 extended to axle center, between the flange 2-3 and the outer ring of bearing 4 for compensating bearing clearance
Wave spring 3, the wave spring 3 are made by spring steel, and spring steel has high tensile strength, elastic limit and fatigue strength,
Elasticity, the long service life of wave spring 3 still can be effectively kept in long-term vibration environment.5 end of motor shaft
From stepped hole 1-1 diameter holes in extend into 1 inner cavity of cabinet.
Embodiment two, such as Fig. 4, Fig. 5, basic structure is same as Example 1, the difference is that, the steel bushing 2 is logical
Supercooling pressure interference fit is fixed in the large diameter hole of 1 stepped hole 1-1 of cabinet, and the outside one of steel bushing 2 and 1 stepped hole 1-1 of cabinet
The even circumferential of end cooperation is distributed with three roulettes 6, and each roulette 6 is in the blind hole being axially arranged, in each roulette 6
It is interference fitted a latch 7 respectively to 2 circumferential direction of steel bushing and axial limiting.Three roulettes 6 can realize the stability line to steel bushing 2
Position, steel bushing 2 and the cold pressing interference fit of cabinet 1 are simple, and together form pair for the roulette 6 and latch 7 of blind hole
Steel bushing 2 stablizes limit, even if also still can guarantee steel bushing 2 and case in the case that steel bushing 2 and cabinet 1 occur loosening because heated
Body 1 is stably connected with.
The assembling structure is stablized, and rotates in a circumferential direction even if wave spring 3 generates in the axis hole 2-4 of steel bushing 2, so that wave spring 3
Friction generates heat for generation between steel bushing 2, results in the case where steel bushing 2 is loosened with cabinet 1 because of expanded by heating, steel bushing 2 exists
The positioning still having had in the stepped hole 1-1 of cabinet 1, steel bushing 2 are connected firmly with cabinet 1.And 4 outer ring of bearing and steel bushing 2 are convex
Wave spring 3 between edge 2-3 can push against 4 outer ring of bearing compensation bearing clearance, realize the axial restraint of motor shaft 5, avoid
The axial float of motor shaft 5 reduces vibration and the noise of motor shaft 5, ensure that the stable delivery of power, improve automobile
NVH performance.Meanwhile it being fixed on the hardness height of the steel bushing 2 in the stepped hole 1-1 of cabinet 1, the flange 2-3 of steel bushing 2 is located at wave spring
Between 3 and the cabinet 1 of reduction gearbox, avoids wave spring 3 and contacted with the direct of cabinet 1, it is therefore prevented that the abrasion deformation of cabinet 1, wave
Shape spring 3 is worked good with steel bushing 2.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, all according to this
The technical spirit of utility model any trickle amendment, equivalent replacement and improvement made to the above embodiment should be included in this
Within the protection scope of utility model.
Claims (5)
1. the assembling structure of a kind of Gearbox and motor shaft, cabinet (1), motor shaft (5) including reduction gearbox, the motor
The inner ring that bearing (4) and bearing (4) are installed on axis (5) cooperates, it is characterised in that: the cabinet (1) is equipped with a stepped hole (1-
1) it, being fixed with a steel bushing (2) in the large diameter hole of the stepped hole (1-1), the steel bushing (2) resists the shaft shoulder of stepped hole (1-1),
For the outer ring clearance fit of the bearing (4) in the axis hole (2-4) of steel bushing (2), the steel bushing (2) resists stepped hole (1-1) axis
One end of shoulder is equipped with the flange (2-3) extended to axle center, and one is equipped between the flange (2-3) and the outer ring of bearing (4) and is used for
Compensate bearing clearance wave spring (3), motor shaft (5) end from stepped hole (1-1) diameter holes in extend into cabinet
(1) in inner cavity.
2. the assembling structure of Gearbox according to claim 1 and motor shaft, it is characterised in that: the steel bushing (2)
Excircle is symmetrically arranged with two tangent planes (2-1) circumferentially limited, and steel bushing (2) excircle is around recessed equipped with an axial limiting
Slot (2-2), the steel bushing (2) are fixed in the large diameter hole of stepped hole (1-1) by the die cast of cabinet (1).
3. the assembling structure of Gearbox according to claim 1 and motor shaft, it is characterised in that: the steel bushing (2)
It is interference fitted in the large diameter hole of cabinet (1) stepped hole (1-1) by cold pressing, and steel bushing (2) and cabinet (1) stepped hole (1-1)
Lateral ends cooperation even circumferential be distributed with multiple roulettes (6), each roulette (6) be in be axially arranged it is blind
Hole is interference fitted a latch (7) to steel bushing (2) circumferential direction and axial limiting in each roulette (6) respectively.
4. the assembling structure of Gearbox according to claim 1 and motor shaft, it is characterised in that: the steel bushing (2)
The even circumferential cooperated with the lateral ends of cabinet (1) stepped hole (1-1) is distributed with three roulettes (6).
5. the assembling structure of Gearbox according to claim 1 and motor shaft, it is characterised in that: the wave spring
(3) it is made by spring steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920419782.0U CN209692515U (en) | 2019-03-29 | 2019-03-29 | The assembling structure of Gearbox and motor shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920419782.0U CN209692515U (en) | 2019-03-29 | 2019-03-29 | The assembling structure of Gearbox and motor shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209692515U true CN209692515U (en) | 2019-11-26 |
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ID=68606629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920419782.0U Active CN209692515U (en) | 2019-03-29 | 2019-03-29 | The assembling structure of Gearbox and motor shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209692515U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831063A (en) * | 2019-03-29 | 2019-05-31 | 重庆青山工业有限责任公司 | The assembling structure of car deceleration box body and motor shaft |
-
2019
- 2019-03-29 CN CN201920419782.0U patent/CN209692515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831063A (en) * | 2019-03-29 | 2019-05-31 | 重庆青山工业有限责任公司 | The assembling structure of car deceleration box body and motor shaft |
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