CN106163214A - Electric unit and radiating subassembly thereof - Google Patents
Electric unit and radiating subassembly thereof Download PDFInfo
- Publication number
- CN106163214A CN106163214A CN201510160864.4A CN201510160864A CN106163214A CN 106163214 A CN106163214 A CN 106163214A CN 201510160864 A CN201510160864 A CN 201510160864A CN 106163214 A CN106163214 A CN 106163214A
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- slot
- radiating
- radiating subassembly
- fixed position
- body section
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Abstract
Disclose a kind of radiating subassembly and comprise the electric unit of this radiating subassembly.Described radiating subassembly includes: bearing frame, which carry the electric device of electric unit, and is formed with one or more fixed position, is formed with axially extended slot in described fixed position；Radiating panel, it is formed and the mating holes of the slot axial alignment in described fixed position；And the tight bushing that bearing frame and radiating panel fitted together, it includes body section and canned paragraph, and formed therein that has axial pass-through holes, and described body section is inserted in described slot, and described canned paragraph inserts and is an interference fit in described mating holes.
Description
Technical field
The application relates to the radiating subassembly in a kind of electric unit and comprises this radiating subassembly
Electric unit.
Background technology
Electric unit is generally of the plastic frame that carry electric device, and this plastic frame is often pacified
Install on the metal sheet of heat conduction, to realize the functions such as the heat radiation of framework.
In prior art, there is various ways in which and plastic frame is often installed to metal sheet.Such as,
According to a kind of prior art, embedding and injection molding packing ring in plastic frame, and on metal sheet
Form riveting projection, riveting is protruded through packing ring, then riveting bowing is realized riveting.
This technology disadvantageously, in plastic frame embedding and injection molding packing ring and on metal sheet
Forming riveted structure and cause processed complex, the operation of clincher tool needs larger space, needs
Metal sheet is fixed to other parts by extra fixed structure.
According to another kind of prior art, process in metallic plate and portal, plastic frame is formed
Barb, by barb from side through the hole metallic plate so that gib head exposes and hook from opposite side
Hang on a metal plate.This technology disadvantageously, barb fixing insecure, barb passes
Metallic plate can affect the metallic plate installation to other element, needs extra fixed structure by metal
Plate is fixed to other parts.
According to another kind of prior art, process in metallic plate and portal, plastic frame is formed
Pin, described pin inserts in described hole to produce interference engagement, thus produces and fixed by plastic frame
Chucking power in metal sheet.This technology disadvantageously, plastic frame to be accurately controlled
And the interference engagement between metal sheet, quality of fit impact chucking power therebetween, especially
It is in the case of there is multiple fixing point, furthermore, it is necessary to extra fixed structure/region is by gold
Belong to plate and be fixed to other parts.
Summary of the invention
The application aims to provide a kind of radiating subassembly in electric unit, wherein, electrically single
The framework of unit is easily fixed on radiating panel.
To this end, according to an aspect of the application, it is provided that the heat radiation group in a kind of electric unit
Part, comprising: bearing frame, which carry the electric device of electric unit, and is formed with one
Or multiple fixed position, described fixed position is formed axially extended slot；Radiating panel,
It is formed and the mating holes of the slot axial alignment in described fixed position；And by bearing frame
The tight bushing that frame and radiating panel fit together, it includes body section and canned paragraph, and
Formed therein that have axial pass-through holes, and described body section is inserted in described slot, described canned paragraph
Insert and be an interference fit in described mating holes.
According to a kind of embodiments possible, described tight bushing also includes flange section, described method
Blue part and canned paragraph are positioned at the axial opposed both sides of body section, at least the one of described fixed position
Part is clamped between described flange section and described radiating panel vertically.
According to a kind of embodiments possible, the radial dimension of described canned paragraph is less than described body section,
Between described canned paragraph and described body section, thus form the lining platform towards described radiating panel
Rank.
According to a kind of embodiments possible, described fixed position is clamped in described flange vertically
Part between part and described radiating panel has axial crushing deformation ability.
According to a kind of embodiments possible, described axial crushing deformation ability is by described fixed position
Bottom surface on the multiple downward projection that formed provide.
According to a kind of embodiments possible, described slot includes big footpath slot segments and path slot segments,
Described flange section is placed in the slot segments of described big footpath, and described body section is inserted described path and inserted
In groove section, formed back to described radiating panel between described big footpath slot segments and path slot segments
Slot step, described flange section pushes against in described slot step.
According to a kind of embodiments possible, shape in described slot, the most described path slot segments
Becoming to have multiple radially-inwardly prominent ridge, described ridge inserts described slot, outstanding in described body section
By described body section radial compression when it is in described path slot segments.
According to a kind of embodiments possible, the bottom surface of described fixed position is formed and is downwardly projected
Prominent ring, described radiating panel is formed with deep gouge on the position corresponding with prominent ring, at it
Interior accommodating corresponding prominent ring.
According to a kind of embodiments possible, described radiating subassembly also includes radiator, described carrying
Framework and radiating panel are assembled in institute by the securing member through the through hole of described tight bushing
State on radiator.
According to further aspect of the application, it is provided that a kind of electric unit, especially electric motor car
Power electronics control unit in DC/AC inverter or DC/DC transducer, it includes
Previously described radiating subassembly.
According to the application, the bearing frame of electric unit and the manufacture of radiating panel with assemble permissible
Simplify.
Accompanying drawing explanation
Below will be according to detailed description of the invention and combine accompanying drawing and be more completely understood and recognize the application
Above and other aspect, in the accompanying drawings:
Fig. 1 is the decomposition diagram of the radiating subassembly of the electric unit of the application；
Fig. 2 is the partial sectional view of the radiating subassembly of the application；
Fig. 3 be the application radiating subassembly further on other element install after broken section
Figure；
Fig. 4 is the sectional view of the tight bushing in the radiating subassembly of the application；
Fig. 5 is that the fixed position of the plastic frame in the radiating subassembly of the application is made from top
Perspective view；
Fig. 6 is the perspective view that the standing part in Fig. 5 is made from below.
Detailed description of the invention
Will now be described with reference to the drawings some embodiments of the application.It should be noted that, it is attached
Figure is only schematically, is not necessarily drawn to scale.It is the most right to should also be noted that
Describing based on the orientation shown in accompanying drawing of orientation, but according to concrete application, all parts can
To have various feasible orientation.
Fig. 1 shows the radiating subassembly of a kind of electric unit of the application.Answer according to one is feasible
With, this electric unit is the DC/AC in the power electronics control unit (PEU) of electric vehicle
Inverter or DC/DC transducer.
Described electric unit includes bearing frame 1, and it is made for one by insulant such as plastics
The form of body, and thereon side equipped with the various electric devices of electric unit.Due to the most single
During unit's work, its electric device can generate heat, and therefore to be distributed by a part of heat through bearing frame 1
Go out.To this end, fix a radiating panel 2 in the downside of bearing frame 1.Described heat sink
Part 2 is preferably made of such as copper by the good metal of heat conductivity, example, substantially in tabular, has smooth
Upper and lower surface and the outline that is generally corresponding to bearing frame 1.The upper table of radiating panel 2
Face fits in the substantially flat bottom surface of bearing frame 1, and lower surface is for installation into radiator
Or on the first type surface of other parts.
Bearing frame 1 is fixed to radiating panel 2 by multiple tight bushings 3, dissipates to be formed
Hot assembly.Tight bushing 3 is fixed to through integral part of fixed position 4 on bearing frame 1
Radiating panel 2.The quantity of fixed position 4 is one or more.In the example in the figures, these
Fixed position 4 is uniform along two opposite longitudinal edges of bearing frame 1.
The unitary elements that tight bushing 3 is made up of hard material, such as steel.As Fig. 2,4
Shown in, tight bushing 3 includes: top flange part 3a；By flange section 3a vertically to
Body section 3b of lower extension, its periphery is substantial cylindrical, the lower edge shape of body section 3b
Become chamfering or fillet；And the tube reducing canned paragraph extended axially downward by the lower end edge of body section 3b
3c, its periphery is conical shaped (as shown in FIG.) or cylindrical (not shown).Through hole
3d is axially through whole tight bushing 3.The peripheral dimension of canned paragraph 3c is less than body section 3b
Peripheral dimension, thus between the upper end of the lower end of body section 3b and canned paragraph 3c formed court
Lining step 3e downwards.In the case of canned paragraph 3c is cone, canned paragraph 3c in
The most tapered shape.The end (lower end) of canned paragraph 3c formed chamfering or
Fillet.The upper and lower surface of flange section 3a and lining step 3e are each substantially perpendicular to fastening lining
The central axis of set 3.
As shown in Fig. 2,5,6, the fixed position 4 of bearing frame 1 is partly by bearing frame
The body part of 1 projects laterally outward.Fixed position 4 is formed the slot of up/down perforation,
This slot includes that be positioned in the top of fixed position 4 is preferably the big footpath, top of substantial cylindrical
Slot segments 4a and be positioned in the bottom of fixed position 4 preferably for the bottom path of substantial cylindrical
Slot segments 4b, the two is substantially coaxial and creates therebetween the slot step 4c towards upside.
It is formed with three or more footpaths on the internal perisporium 4d of bottom path slot segments 4b additionally, limit
To the ridge 4e of project inward.These ridges 4e is uniform preferably about the central axis of slot.Each
The end of the central axis projection towards slot of ridge 4e forms tip.
Additionally, the lower bottom end of fixed position 4 is around the end portion formation of path slot segments 4b
Prominent ring 4f downward projection of relative to the bottom surface of bearing frame 1.On the bottom surface of prominent ring 4f, shape
Become to have three or more downward projections 4g.These projections 4g are preferably about the center of slot
Axis is uniform, and when by certain axial compressive force, it is possible to there is axial crushing deformation.
As shown in Figure 1, 2, the upper surface of radiating panel 2 with the fixed position on bearing frame
Deep gouge 2a it is formed with, for accommodating corresponding prominent ring 4f within it on the position of 4 correspondences.Additionally,
In the position corresponding with the slot in fixed position 4, radiating panel 2 is formed and canned paragraph 3c
Cone that shape and size are corresponding or the mating holes 2b of cylinder.
As in figure 2 it is shown, and with reference to Fig. 1,4-6, for bearing frame 1 is fixed to heat sink
On part 2, first, the prominent ring 4f of each fixed position 4 of bearing frame 1 is inserted radiating panel
In the corresponding deep gouge 2a of 2 so that projection 4g pushes against in the bottom land of deep gouge 2a.So, hold very much
The most just by bearing frame 1 relative to radiating panel 2 Primary Location.In this state, heat radiation
Mating holes 2b in plate 2 and slot (big footpath slot segments 4a and the path in bearing frame 1
Slot segments 4b) align.In this, it will be understood that by prominent ring 4f and corresponding deep gouge 2a
Primary Location structure between the bearing frame 1 and the radiating panel 2 that provide could alternatively be other
The location structure of any suitable form, it might even be possible to cancel.
Then, inserting of the corresponding fixed position 4 each tight bushing 3 being pressed in bearing frame 1
In groove so that the canned paragraph 3c of tight bushing 3 is inserted into the mating holes 2b in radiating panel 2
In.Now, the flange section 3a of tight bushing 3 is positioned at the big footpath slot segments of fixed position 4
In 4a, body section 3b is positioned in path slot segments 4b of fixed position 4, fixed position 4
Bottom is axially held between flange section 3a and radiating panel 2.So, just by fastening
Bearing frame 1 has been fixed on radiating panel 2 by lining 3, thus form shown in Fig. 2
Pre-assembled radiating subassembly.
In order to realize suitably joining between tight bushing 3 and bearing frame 1 and radiating panel 2
Closing, some sizes of tight bushing 3 are defined.
First, the external diameter of flange section 3a is less than the internal diameter of big footpath slot segments 4a, so that doing in the proper way
Blue part 3a can be placed in slot segments 4a of big footpath.
Additionally, the external diameter of body section 3b is slightly less than the internal diameter of path slot segments 4b, but it is slightly larger than
The diameter of a circle that the end of each ridge 4e in path slot segments 4b limits.Body section 3b is being inserted
When entering in path slot segments 4b, each ridge 4e can slightly radially be compressed.So, the most permissible
Realize radially fixed to fixed position 4 of tight bushing 3, and can also by each ridge 4e not
Make up the slot in fixed position 4 and the mismatch between mating holes 2b with compression degree, i.e. the two
Axis misaligned.It is processed that this mismatch is probably at bearing frame 1 and radiating panel 2
Journey produces.Due to the compensating action of compressible ridge 4e, even if in some fixed position 4
Slot and mating holes 2b between there is mismatch, it is also possible at whole fixed positions 4 will carrying
Framework 1 is fixed on radiating panel 2.
Additionally, the external diameter of canned paragraph 3c is slightly larger than the internal diameter of mating holes 2b, so that the two it
Between produce interference engagement, thus, tight bushing 3 is fixed on radiating panel 2.
According to a kind of preferred implementation, in the axial direction, the height of body section 3b is slightly less than fixing
The height (from slot step 4c to projection 4g bottom) of bottom, position 4, and prominent ring 4f and
The height sum of the projection 4g degree of depth slightly larger than deep gouge 2a, so that, merely with fastening lining
Bearing frame 1 and radiating panel 2 are tentatively fitted together and do not have the most axially by set 3
Power is by tight bushing 3 under the state that radiating panel 2 pushes, and projection 4g is pushed against deep gouge
The bottom land of 2a, and between lining step 3e and the bottom land of deep gouge 2a, the bottom surface of bearing frame 1
And all there is certain gap between the upper surface of radiating panel 2.Certainly, at bearing frame 1
Material time there is certain compressibility, the bottom surface of bearing frame 1 is upper with radiating panel 2
Gap between surface can be less than the gap between lining step 3e and the bottom land of deep gouge 2a,
Even there is not gap between bottom surface and the upper surface of radiating panel 2 of bearing frame 1.
After forming the pre-assembled radiating subassembly shown in Fig. 2 in the manner described above, this is pre-assembled
Radiating subassembly can be further fitted to radiator or other has on the parts of heat sinking function.
Such as, as it is shown on figure 3, radiating subassembly is installed to the cold of radiator by screw 6 securing member such as grade
But on plate 5.This coldplate 5 is preferably made up of the material of perfect heat-dissipating, such as aluminum, and
Can be with contributing to the structure (such as fin etc.) of heat radiation, and can be equipped with active cooling
Device (such as fan etc.).Each screw 6 is through the through hole in corresponding tight bushing 3
3d, and coldplate 5 it is fastened to by threaded engagement.In the process utilizing screw 6 to fasten
In, the axial force that screw 6 can be gradually increased to tight bushing 3 applying.Axial by means of this
The effect of power, the bottom of fixed position 4 is compressed axially by tight bushing 3 so that projection 4g
Axial crushing deformation, final lining step 3e is pressed on the bottom land of deep gouge 2a, and bearing frame
The bottom surface of frame 1 is adjacent to the upper surface of radiating panel 2, the lower surface of radiating panel 2 and cooling
The upper surface of plate 5 is adjacent to.So, it is the formation of final radiating subassembly.In final heat radiation
In assembly, achieve bearing frame 1 by tight bushing 3 with through their securing member, dissipate
Firm assembling between hot plate part 2, radiator, and realize high-efficiency heat conduction between which
Fit tightly.
According to a kind of optional embodiment, the externally threaded axially and radially size of screw 6 is permissible
It is arranged so that, along with screw 6 screws in the through hole 3d of tight bushing 3, tight bushing 3
Body section 3b and/or canned paragraph 3c are the most slightly strutted, right to strengthen tight bushing 3
Bearing frame 1 and/or the fixation of radiating panel 2.
According to the application, owing to, at the fixed position 4 of bearing frame 1, utilizing tight bushing
3 achieve fixing between bearing frame 1 and radiating panel 2, and tight bushing 3 itself
Provide again the pre-assembled radiating subassembly that bearing frame 1 and radiating panel 2 are formed to enter
The position that one step assembles, therefore, it is no longer necessary to be additionally provided space by pre-assembled heat radiation group
Part is installed on other parts.So, radiating subassembly (pre-assembled and final) is simplified
Structure and processing and installation process.
Additionally, due to fixed position 4 defines can radial compression deformation ridge 4e, to adapt to
Mismatch between the rigging position of bearing frame 1 and radiating panel 2.Therefore, to bearing frame
The requirement on machining accuracy of frame 1 and radiating panel 2 can reduce, thus reduces the one-tenth of radiating subassembly
This.
Additionally, utilize securing member bearing frame 1 and radiating panel 2 to be fastened at fixed position 4
On radiator, it is achieved that fastening between bearing frame 1 and radiating panel 2 and fitting tightly
And fastening between radiating panel 2 and radiator and fitting tightly.So, just with simply
Mode achieves and efficiently assembles and heat radiation.
Although describing the application herein with reference to specific embodiment, but scope of the present application being also
It is not limited to shown details.In the case of without departing from the ultimate principle of the application, can be for this
A little details make various amendment.
Claims (10)
1. the radiating subassembly in electric unit, including:
Bearing frame (1), which carry the electric device of electric unit, and is formed with one or many
Individual fixed position (4), is formed with axially extended slot in described fixed position；
Radiating panel (2), it is formed and the slot axial alignment in described fixed position (4)
Mating holes (2b)；And
The tight bushing (3) that bearing frame (1) and radiating panel (2) are fitted together,
It includes body section (3b) and canned paragraph (3c), and formed therein that has axial pass-through holes (3d),
Described body section (3b) is inserted in described slot, and described canned paragraph (3c) inserts and interferes joins
It is combined in described mating holes (2b).
2. radiating subassembly as claimed in claim 1, wherein, described tight bushing (3) is also
Including flange section (3a), described flange section (3a) and canned paragraph (3c) are positioned at body section
(3b) axial opposed both sides, at least some of of described fixed position (4) is pressed from both sides vertically
Hold between described flange section (3a) and described radiating panel (2).
3. radiating subassembly as claimed in claim 2, wherein, the footpath of described canned paragraph (3c)
To being smaller in size than described body section (3b), thus in described canned paragraph (3c) and described body section
(3b) the lining step (3e) towards described radiating panel (2) is formed between.
4. radiating subassembly as claimed in claim 2 or claim 3, wherein, described fixed position (4)
It is clamped in the part between described flange section (3a) and described radiating panel (2) vertically
There is axial crushing deformation ability.
5. radiating subassembly as claimed in claim 4, wherein, described axial crushing deformation ability
Thered is provided by the multiple downward projection (4g) formed on the bottom surface of described fixed position (4).
6. the radiating subassembly as according to any one of claim 2 to 5, wherein, described slot
Including big footpath slot segments (4a) and path slot segments (4b), described flange section (3a) disposes
In described big footpath slot segments (4a), described body section (3b) inserts described path slot segments
(4b) in, formed between described big footpath slot segments (4a) and path slot segments (4b) back to
The slot step (4c) of described radiating panel (2), described flange section (3a) pushes against in institute
State slot step (4c).
7. the radiating subassembly as according to any one of claim 1-6, wherein, described slot,
The most described path slot segments (4b) is formed multiple radially-inwardly prominent ridge (4e),
Described ridge inserts described slot, the most described path slot segments (4b) in described body section (3b)
By described body section (3b) radial compression time middle.
8. the radiating subassembly as according to any one of claim 1-7, wherein, described fixed part
Being formed with downward projection of prominent ring (4f) on the bottom surface of position (4), described radiating panel (2) exists
Deep gouge (2a) it is formed with on the position corresponding with prominent ring (4f), accommodating corresponding within it
Prominent ring (4f).
9. the radiating subassembly as according to any one of claim 1-8, also includes radiator, institute
State bearing frame and radiating panel (2) by the through hole (3d) through described tight bushing (3)
Securing member and be assembled on described radiator.
10. in the power electronics control unit of an electric unit, especially electric vehicle
DC/AC inverter or DC/DC transducer, it includes institute as any one of claim 1-9
The radiating subassembly stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160864.4A CN106163214B (en) | 2015-04-07 | 2015-04-07 | Electric unit and heat radiation assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510160864.4A CN106163214B (en) | 2015-04-07 | 2015-04-07 | Electric unit and heat radiation assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106163214A true CN106163214A (en) | 2016-11-23 |
| CN106163214B CN106163214B (en) | 2020-07-10 |
Family
ID=57338048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510160864.4A Active CN106163214B (en) | 2015-04-07 | 2015-04-07 | Electric unit and heat radiation assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106163214B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086270A (en) * | 2006-06-05 | 2007-12-12 | 形状连接技术有限公司及两合公司 | Connecting element, part assembly and method for forming the part assembly |
| CN201167443Y (en) * | 2008-03-18 | 2008-12-17 | 洋鑫科技股份有限公司 | Fixed assembly |
| CN103391703A (en) * | 2012-05-11 | 2013-11-13 | 控制技术有限公司 | Clamping device |
| CN203761727U (en) * | 2014-01-02 | 2014-08-06 | 博世汽车部件(苏州)有限公司 | Circuit board fixing element and electronic control unit |
-
2015
- 2015-04-07 CN CN201510160864.4A patent/CN106163214B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101086270A (en) * | 2006-06-05 | 2007-12-12 | 形状连接技术有限公司及两合公司 | Connecting element, part assembly and method for forming the part assembly |
| CN201167443Y (en) * | 2008-03-18 | 2008-12-17 | 洋鑫科技股份有限公司 | Fixed assembly |
| CN103391703A (en) * | 2012-05-11 | 2013-11-13 | 控制技术有限公司 | Clamping device |
| CN203761727U (en) * | 2014-01-02 | 2014-08-06 | 博世汽车部件(苏州)有限公司 | Circuit board fixing element and electronic control unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106163214B (en) | 2020-07-10 |
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