CN206386363U - With the mechanical device for axially treating preload piece - Google Patents
With the mechanical device for axially treating preload piece Download PDFInfo
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- CN206386363U CN206386363U CN201621249224.7U CN201621249224U CN206386363U CN 206386363 U CN206386363 U CN 206386363U CN 201621249224 U CN201621249224 U CN 201621249224U CN 206386363 U CN206386363 U CN 206386363U
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- preload piece
- axle
- elastic component
- axially
- treating
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Abstract
A kind of mechanical device that there is axial direction to treat preload piece, including：Axle, pretension elastic component and described treat preload piece；The axle is provided with radially outwardly projecting portion, the pretension elastic component and treats that preload piece covers on the shaft；The mechanical device also includes：Stopper section, is fixedly connected with the axle；The outwardly projecting portion, pretension elastic component, treat that preload piece and stopper section are arranged successively along the axial direction of the axle, the pretension elastic component is by outwardly projecting portion and treats preload piece extruding and keeps compression；Along the axial direction, it is described treat preload piece by the axial elastic force that pretension elastic component applies with the stopper section axially against described treating that preload piece is relatively rotated with axle so as to keep axial pretightening to stop.The technical program can reduce the exact requirements to installing cooperation between pretension elastic component and axle.
Description
Technical field
The utility model is related to field of mechanical technique, more particularly to a kind of to have the mechanical device for axially treating preload piece.
Background technology
In a kind of existing P2 hybrid powers module, including motor and flange shaft with rotor, flange shaft, which has, to be turned round
Square output end, for transmitting the output torque of engine to gearbox.
Outer shroud is provided with the torque output of flange shaft, outer shroud is fixedly connected around flange shaft and with flange shaft, and and method
Blue axis limit receiving space.Rotor is enclosed in flange shaft and inserts receiving space.
Ball bearing is provided between outer shroud and rotor, ball bearing is enclosed on rotor so that flange shaft by outer shroud with
Rotor connects to rotate.One end that rotor is located at outside receiving space is provided with radially outwardly projecting portion, one end set in receiving space
Provided with preloading spring.Ball bearing is located between radially outwardly projecting portion and preloading spring, and preloading spring has to be provided for ball bearing
The effect of axial pre tightening force and anti-dropout.
On the one hand, preloading spring is axially deformed to provide axial pre tightening force to ball bearing, and ball bearing is outside in footpath
Axial pretightening is kept between teat and preloading spring, stops that the inner ring of rolling bearing relatively rotates with rotor.On the other hand,
Preloading spring is reached with rotor by tight fit to be fixedly connected, and prevents preloading spring from axially coming off.
But, this proposes exact requirements to the cooperation between preloading spring and rotor：
If preloading spring crosses tight fit, it is necessary to provide preloading spring larger axial direction using additional means with rotor
Power, to overcome the larger frictional force between preloading spring and rotor.This aspect causes assembling difficult, and cost is higher；The opposing party
Face, the parts near other parts and flange shaft that larger axial force transmission is connected to flange shaft, flange shaft, leads
Cause some parts that there is the risk of fracture.Furthermore, the axial deformation displacement amount of preloading spring, pretension bullet can be limited by crossing tight fit
Spring is not good to the axial pretightening effect of ball bearing, and ball bearing may be with relative rotation of rotor.
If preloading spring is loose fit with rotor, the risk increase that preloading spring comes off, preloading spring is to ball bearing
The effect of anti-dropout is not good.
Utility model content
The problem of the utility model is solved is in the mechanical device of preload piece is treated with axial direction, how to reduce to pretension
The exact requirements of cooperation are installed between elastic component and axle.
To solve the above problems, the utility model provides a kind of mechanical device for having and axially treating preload piece.The machinery is filled
Put including：Axle, pretension elastic component and described treat preload piece；The axle is provided with radially outwardly projecting portion, the pretension elastic component and treats pre-
Tight part covers on the shaft；The mechanical device also includes：Stopper section, is fixedly connected with the axle；The outwardly projecting portion, pretension bullet
Property part, treat that preload piece and stopper section are arranged successively along the axial direction of the axle, the pretension elastic component is by outwardly projecting portion and treating preload piece
Extrude and keep compression；Along the axial direction, it is described treat preload piece by the axial elastic force that pretension elastic component applies with it is described
Stopper section to stop so as to keep axial pretightening axially against described treating that preload piece is relatively rotated with axle.
Alternatively, the pretension elastic component is helical spring or diaphragm spring.
Alternatively, the stopper section is back-up ring, through the axle.
Alternatively, the back-up ring is fixedly connected in an interference fit with the axle.
Alternatively, the back-up ring two faces relative with the Axial and radial are the tip circle conical surface, and along the axial direction, from
Described to treat the direction that preload piece points to the back-up ring, radius is gradually reduced.
Alternatively, along the axial direction, the stopper section has footpath turned-out back to the side for treating preload piece, the axle
Side；The flanging and the stopper section axially against.
Alternatively, the stopper section is backstop elastic component, treats that the axial elastic force of preload piece application is axially pre- to carry out to described
Tightly.
Alternatively, the backstop elastic component includes：Substrate ring, is fixedly connected with the axle；
Deformation section, the one end for treating preload piece is axially faced toward positioned at described matrix ring, is treating that preload piece is axially supported with described
By when, radially elastic deformation.
Alternatively, the outer peripheral face of the axle has groove, and the groove is around the axis of the axle；The backstop elasticity
Part is arranged in the groove.
Alternatively, it is described to treat that preload piece is bearing.
Alternatively, the axle is rotor, can be rotated around own central axis line.
Alternatively, the mechanical device is P2 hybrid power modules, including：Motor, the axle is the rotor of the motor；
Power transmission shaft, vertically with torque output；The power transmission shaft is provided with outer shroud in the torque output, and the outer shroud is around institute
State power transmission shaft and be fixedly connected with power transmission shaft, with the transmission axis limit receiving space, the rotor is enclosed on power transmission shaft and inserted
Enter the receiving space, at least described stopper section and treat that preload piece is contained in the receiving space；It is described to treat that preload piece is axle
Hold, the power transmission shaft is that bearing is connected by outer shroud and rotor.
Compared with prior art, the technical solution of the utility model has advantages below：
Pretension elastic component and treat that preload piece covers on the shaft, pretension elastic component, treat preload piece and stopper section along axle
Axially arrange successively.Treat axial elastic force that preload piece applied by pretension elastic component and with the stopper section axially against.Pretension bullet
Property part can provide axial pre tightening force to treat preload piece, treat preload piece axial pretightening between pretension elastic component and stopper section, prevent
Only treat that preload piece is relatively rotated with axle.Meanwhile, stopper section, which can stop, treats that preload piece and pretension elastic component come off.
Because pretension elastic component need not play a part of anti-dropout, therefore it can reduce to pacifying between pretension elastic component and axle
The exact requirements closed are assembled, can be loose fit between pretension elastic component and axle, this can bring following benefit：On the one hand, in advance
Tight elastic component can pass easily through axle, and additional means are not needed in assembling, and the assembling of pretension elastic component is easy, cost compared with
It is low；On the other hand, damage will not be caused to axle and pretension elastic component in an assembling process；Furthermore, pretension elastic component can ensure
Required compress variation, meets the axial pretightening requirement for treating preload piece.
Brief description of the drawings
Fig. 1 is the profile with the mechanical device for axially treating preload piece of the utility model specific embodiment；
During Fig. 2 is mechanical device shown in Fig. 1, stopper section and axle matching relationship schematic diagram；
Fig. 3 is the profile with the mechanical device for axially treating preload piece of one variation of the utility model；
Fig. 4 is the stereogram of stopper section in its natural state in mechanical device shown in Fig. 3；
Fig. 5 is the plan view for the part that mechanical device axis shown in Fig. 3 is engaged with stopper section.
Embodiment
It is understandable to enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, below in conjunction with the accompanying drawings to this
The specific embodiment of utility model is described in detail.
Reference picture 1, a kind of mechanical device that there is axial direction to treat preload piece 1, including：Axle 2, pretension elastic component 3 and treat pretension
Part 1；Axle 2 has radially outwardly projecting portion 4, pretension elastic component 3 and treats that preload piece 1 is enclosed on axle 2.The mechanical device also includes：
Stopper section 5, is fixedly connected with axle 2.Outwardly projecting portion 4, pretension elastic component 3, treat that preload piece 1 and stopper section 5 are arranged successively along the axial direction of axle 2
Cloth, pretension elastic component 3 is by outwardly projecting portion 6 and treats that preload piece 1 is extruded and keeps compression.Vertically, treat preload piece 1 by pretension bullet
Property the axial elastic force that applies of part 3 and with stopper section 5 axially against treating preload piece 1 and the phase of axle 2 so as to keep axial pretightening to stop
To rotating.
Pretension elastic component 3 is located at outwardly projecting portion 4 and treated between preload piece 1, treats preload piece 1 and provides axial pre tightening force, makes to treat
Preload piece 1 is with stopper section 5 axially against so as to keep axial pretightening.Pretension elastic component 3 can be to treat that preload piece 1 provides axial direction
Pretightning force, treats the axial pretightening of preload piece 1 between pretension elastic component 3 and stopper section 5, prevents that treating that preload piece 1 is relative with axle 2 turns
It is dynamic.Meanwhile, stopper section 5, which can stop, treats that preload piece 1 and pretension elastic component 3 come off.
Because pretension elastic component 3 need not play a part of anti-dropout, thus can reduce to pretension elastic component 3 and axle 2 it
Between the exact requirements of cooperation are installed, can be loose fit between pretension elastic component 3 and axle 2, this can bring following benefit：One side
Face, pretension elastic component 3 can pass easily through axle 2, and additional means are not needed in assembling, and the assembling of pretension elastic component 3 is easy,
Efficiency high, cost is relatively low；On the other hand, damage will not be caused to axle 2 and pretension elastic component 3 in an assembling process；Furthermore, pretension
Elastic component 3 can ensure required compress variation, meet the axial pretightening requirement for treating preload piece 1.
Here mechanical device is P2 hybrid power modules, including：Motor 6, axle 2 is the rotor of motor 1, with centre bore
2a；Power transmission shaft 7, vertically with torque output 7a, power transmission shaft 7 is transmitted engine output torque by torque output 7a
To gearbox.
Power transmission shaft 7 is provided with outer shroud 8 in torque output 7a, and outer shroud 8 is fixedly connected around power transmission shaft 7 and with power transmission shaft 7, with
Power transmission shaft 7 limits receiving space 8a, and rotor, which is enclosed on power transmission shaft 7, cuts insertion receiving space 8a, at least stopper section 5 and treats preload piece
1 is contained in receiving space 8a.It is bearing to treat preload piece 1, and power transmission shaft 7 is that bearing is connected by outer shroud 8 and rotor (axle 2).
In assembling, first, pretension elastic component 3 is mounted on axle 2 in advance through axle 2, pretension elastic component 3 and outwardly projecting portion 4
It is axially opposing；Then, bearing (package 1) is fixedly connected by its outer ring 11 with the inner peripheral surface of outer shroud 8；Afterwards, operation is passed
Moving axis 7 passes through the centre bore 2a of axle 2, and bearing right side from Fig. 1 passes through axle 2 to be mounted on axle 2 in advance；Finally, the court of stopper section 5 is operated
Axial pretightening is carried out to bearing, bearing is oppressed the formation of pretension elastic component 3 by itself inner ring 12, and bullet occurs for pretension elastic component 3
Property deformation to provide axial pre tightening force.Pretension elastic component 3 and stopper section 5 are common to the progress axial pretightening of inner ring 12, and realization is treated
The purpose of the axial pretightening of preload piece 1.
Connected between outer shroud 8 and power transmission shaft 7 by connecting portion 9.Connecting portion 9 (can not show provided with action pane in figure
Go out), after power transmission shaft 7 and axle 2 are assembled, axial pretightening is carried out to stopper section 5 by action pane so that stopper section 5 is consolidated with axle 2
Fixed connection, and with treat preload piece 1 axially against.
Pretension elastic component 3 is limited between outwardly projecting portion 4 and inner ring 12, is had between outwardly projecting portion 4 and inner ring 12 sufficiently empty
Between limit the position of pretension elastic component 3.Moreover, outwardly projecting portion 4 has a larger external diameter, the radial outer end of pretension elastic component 3 can be with
The end face of outwardly projecting portion 4 is supported on, pretension elastic component 3 is occurred effective, sufficient elastic deformation.
Above so that mechanical device is P2 hybrid power modules as an example, the technical program is elaborated, the technical program especially may be used
For axially treating mechanical device of the preload piece for bearing.In addition, for axially treating the machine of preload piece with other types
Tool device, the technical program can application by analogy it.
Pretension elastic component 3 can be diaphragm spring.The axial dimension of axle 2, the axle of diaphragm spring are taken in view of stopper section 5
To size less, matching requirements can be met.Moreover, the axial pre tightening force that diaphragm spring can be provided will not reduce substantially, can
To meet the pretension demand for treating preload piece 1.
Diaphragm spring has a small end and big end, small end and treats that preload piece 1 is formed with separation finger against, big end, separation finger with
Outwardly projecting portion 4 against.Diaphragm spring is compressed axially and occurs elastic deformation, while separation finger can be extended radially outward, this
When outwardly projecting portion 4 there is sufficient external diameter to support separation finger, it is to avoid separation finger is radially higher by outwardly projecting portion 4, cause diaphragm spring
It sufficiently flexible can not deform, cause to treat that preload piece 1 can not obtain effective pretension.
In addition to diaphragm spring, pretension elastic component can contemplate selection helical spring.
Stopper section 5 can be back-up ring, through axle 2, and back-up ring can treat preload piece 1 for 2 one weeks around axle and keep in balance pretension,
Back-up ring and treat that there is between preload piece 1 larger mating surface, the fastness of preload piece 1 and pretension elastic component 3 is treated in enhancing.
Preload piece 1 is treated in stopper section 5 has axial anti-dropout effect, and this needs the external diameter of stopper section 5 to be more than to treat preload piece 1
Internal diameter, therefore in axle 2 and the assembling process of power transmission shaft 7, it is necessary to will first stop before treating that preload piece 1 is fixedly connected with outer shroud 8
Stopper 5 is in advance in receiving space 8a, and if not, stopper section 5 will be unable to realize and install.Afterwards, power transmission shaft 7 passes through axle 2
Centre bore 2a, treats that preload piece 1 passes through axle 2 prior to stopper section 5, then stopper section 5 is mounted on axle 2 in advance；Finally, connecting portion 9 is passed through
On action pane to stopper section 5 carry out axial pretightening.
Back-up ring (stopper section 5) is fixedly connected in an interference fit with axle 2, and the mode of interference fit is not needed additionally
Attachment structure, it is easy to operate.Back-up ring can be firm shape part, be unlikely to deform, and can be connected with the formation of axle 2 rigidity, backstop effect is good.
With reference to Fig. 2, two faces of stopper section 5 and axle 2 diametrically are the tip circle conical surface, and vertically, from treating pretension
Part 1 points to the direction B of stopper section 5, and radius is gradually reduced.In the mating surface of stopper section 5 and axle 2, the inner peripheral surface of stopper section 5
53 and the outer peripheral face 21 of axle 2 be the tip circle conical surface, this can be produced the advantage that：
On the one hand, assembling is conducive to.In mating surface, on the direction for dorsad treating preload piece 1, the outer peripheral face 21 of axle 2 and
The radius of the inner peripheral surface 53 of stopper section 5 is gradually reduced, and stopper section 5 has the larger first end A in aperture and aperture less the
Two end a, axle 2 has the less small end b of external diameter.In assembling, first end A can be easy to begin to pass axle from the small end b of axle 2
2, stopper section 5 easily can be mounted on axle 2 in advance.During pretension, the inner peripheral surface 53 of stopper section 5 slips over the periphery of axle 2
Face, the outer peripheral face 21 of axle 2 has guide effect to stopper section 5.
On the other hand, tight fit is conducive to.There is larger interference between the small end b of axle 2 and the second end a of stopper section 5
Amount, the magnitude of interference refers to that basic size is identical and the elastic relation of cooperation between the centre bore of stopper section 5 and axle 2 that be combined with each other, compared with
Big interference amount represents to be formed between the two compared with tight fit, and bonding strength is high.
Vertically, stopper section 5 is back to the side for treating preload piece 1, and axle 2 has footpath outward flanging (not shown)；Turn up
Side can be axially against flanging has anti-dropout effect to stopper section 5, strengthens the fixed effect of stopper section 5 with stopper section 5.
Now, due to being interference fit between stopper section 5 and axle 2, flanging need not radially turn up relatively large, axle 2 is damaged not
Greatly.
In addition in alternative scheme, reference picture 3 and Fig. 4, stopper section 50 can be backstop elastic component, treat pretension
Part 10 applies axial elastic force to carry out axial pretightening.In this alternative scheme, backstop elastic component can be with to pretension elastic component 30
With compensating action, pretension elastic component 30 and backstop elastic component can provide axial pre tightening force, and the axle of preload piece 10 is treated in enhancing
To pretensioning effect.But, preload piece 1 is treated in stopper section 50 and pretension elastic component 30 plays anti-dropout effect, therefore to backstop bullet
The property available axial pre tightening force of part does not have larger requirement.
Therefore, backstop elastic component can include：Substrate ring 51, is fixedly connected with axle 20；Deformation section 52, positioned at substrate ring 51
Axially face toward the one end for treating preload piece 10, with whne preload piece 10 axially against when, being capable of radially elastic deformation.
In the pre-assembly, deformation section 52 can be along the axially extending of substrate ring 51；To stopper section 50 towards treating preload piece
10 when carrying out axial pretightening, deformation section 52 and treats preload piece 10 and contacts and treated preload piece 10 to extrude and radially elasticity change
Shape, treats the formation stop of preload piece 10.
Stopper section 50 can be spring leaf, for example, can be elastic steel sheet so that deformation section 52 can deform and carry
For treating the intensity needed for the anti-dropout of preload piece 10.Deformation section 52 can include some deformations being circumferentially arranged along substrate ring 51
Refer to.
In this case, with reference to reference picture 5, the outer peripheral face 21 of axle 20 can have groove 21a, and groove 21a is around axle
20 axis；Backstop elastic component (stopper section 50) is arranged in groove 21a.Specifically, stopper section 50 can pass through substrate ring
51 are arranged in groove 21a, and groove 21a has the both sides side wall of axially opposed setting, to the formation axial restraint of substrate ring 51,
Stopper section 50 can be fixed on axle 20.
Along the axial direction of axle 20, one end outer end diameter that design axle 20 is used for fixed stop portion 50 is less than the outer of other parts
Footpath, forms groove 21a close to the side side wall for treating preload piece 10., can be by axle after being mounted in advance on axle 20 in stopper section 50
20 right-hand member carries out turning up to form flanging using the opposite side side wall as groove 21a.
Although the utility model is disclosed as above, the utility model is not limited to this.Any those skilled in the art,
Do not depart from spirit and scope of the present utility model, can make various changes or modifications, therefore protection domain of the present utility model
It should be defined by claim limited range.
Claims (12)
1. a kind of mechanical device that there is axial direction to treat preload piece, including：Axle, pretension elastic component and described treat preload piece；
The axle is provided with radially outwardly projecting portion, the pretension elastic component and treats that preload piece covers on the shaft；
Characterized in that, also including：Stopper section, is fixedly connected with the axle；
The outwardly projecting portion, pretension elastic component, treat that preload piece and stopper section are arranged successively along the axial direction of the axle, the pretension elasticity
Part is by outwardly projecting portion and treats that preload piece is extruded and keeps compression；
Along the axial direction, it is described treat preload piece by the axial elastic force that pretension elastic component applies with the stopper section axially against,
Described treat that preload piece is relatively rotated with axle so as to keep axial pretightening to stop.
2. as claimed in claim 1 have the mechanical device for axially treating preload piece, it is characterised in that the pretension elastic component is
Helical spring or diaphragm spring.
3. as claimed in claim 1 have the mechanical device for axially treating preload piece, it is characterised in that the stopper section is gear
Circle, through the axle.
4. as claimed in claim 3 have the mechanical device for axially treating preload piece, it is characterised in that the back-up ring and the axle
It is fixedly connected in an interference fit.
5. as claimed in claim 4 have the mechanical device for axially treating preload piece, it is characterised in that the back-up ring and the axle
Two faces diametrically are the tip circle conical surface, and along the axial direction, the direction that preload piece points to the back-up ring is treated from described,
Radius is gradually reduced.
6. as claimed in claim 4 have the mechanical device for axially treating preload piece, it is characterised in that described along the axial direction
Stopper section has footpath outward flanging back to the side for treating preload piece, the axle；The flanging and stopper section axial direction
Against.
7. as claimed in claim 1 have the mechanical device for axially treating preload piece, it is characterised in that the stopper section is backstop
Elastic component, treats that preload piece applies axial elastic force to carry out axial pretightening to described.
8. as claimed in claim 7 have the mechanical device for axially treating preload piece, it is characterised in that the backstop elastic component bag
Include：Substrate ring, is fixedly connected with the axle；
Deformation section, the one end for treating preload piece is axially faced toward positioned at described matrix ring, with it is described whne preload piece axially against when,
Radially elastic deformation.
9. as claimed in claim 7 have the mechanical device for axially treating preload piece, it is characterised in that the periphery mask of the axle
Fluted, the groove is around the axis of the axle；The backstop elastic component is arranged in the groove.
10. as claimed in claim 1 have the mechanical device for axially treating preload piece, it is characterised in that described to treat that preload piece is
Bearing.
11. as claimed in claim 1 have the mechanical device for axially treating preload piece, it is characterised in that the axle is rotor, energy
It is enough to be rotated around own central axis line.
12. as claimed in claim 1 have the mechanical device for axially treating preload piece, it is characterised in that the mechanical device is
P2 hybrid power modules, including：
Motor, the axle is the rotor of the motor；
Power transmission shaft, vertically with torque output；
The power transmission shaft is provided with outer shroud in the torque output, and the outer shroud around the power transmission shaft and fixes company with power transmission shaft
Connect, with the transmission axis limit receiving space, the rotor is enclosed on power transmission shaft and inserts the receiving space, at least described to stop
Stopper and treat that preload piece is contained in the receiving space；
Described to treat that preload piece is bearing, the power transmission shaft is that bearing is connected by outer shroud and rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621249224.7U CN206386363U (en) | 2016-11-21 | 2016-11-21 | With the mechanical device for axially treating preload piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621249224.7U CN206386363U (en) | 2016-11-21 | 2016-11-21 | With the mechanical device for axially treating preload piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206386363U true CN206386363U (en) | 2017-08-08 |
Family
ID=59486933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621249224.7U Active CN206386363U (en) | 2016-11-21 | 2016-11-21 | With the mechanical device for axially treating preload piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206386363U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019140547A1 (en) * | 2018-01-16 | 2019-07-25 | 舍弗勒技术股份两合公司 | Bearing fixing device and hybrid power module comprising bearing fixing device |
-
2016
- 2016-11-21 CN CN201621249224.7U patent/CN206386363U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019140547A1 (en) * | 2018-01-16 | 2019-07-25 | 舍弗勒技术股份两合公司 | Bearing fixing device and hybrid power module comprising bearing fixing device |
| CN111656024A (en) * | 2018-01-16 | 2020-09-11 | 舍弗勒技术股份两合公司 | Bearing fixing device and hybrid power module comprising same |
| EP3742007A4 (en) * | 2018-01-16 | 2021-09-01 | Schaeffler Technologies AG & Co. KG | Bearing fixing device and hybrid power module comprising bearing fixing device |
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