CN207583482U - Vibration damping cooling fan system and apply its automobile - Google Patents
Vibration damping cooling fan system and apply its automobile Download PDFInfo
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- CN207583482U CN207583482U CN201721555574.0U CN201721555574U CN207583482U CN 207583482 U CN207583482 U CN 207583482U CN 201721555574 U CN201721555574 U CN 201721555574U CN 207583482 U CN207583482 U CN 207583482U
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- cooling fan
- locating part
- blower tray
- vibration damping
- fan system
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Abstract
The utility model provides a kind of vibration damping cooling fan system and applies its automobile, which includes blower tray, cooling fan and multiple installation mounting assemblies, and installation mounting assembly includes locating part, and locating part is circumferentially arranged with limiting slot；Cooling fan is equipped with multiple fixing legs, and the quantity of fixing leg, position are corresponding with installation mounting assembly, and fixing leg is equipped with the position-limited edge that can be caught in limiting slot；The position-limited edge of fixing leg is caught in the limiting slot of locating part, and locating part is fixed on blower tray, and fixing leg is pressed on blower tray, and the fan edge of cooling fan and the bracket edge of blower tray are in close contact.Mounting assembly is installed, make to form effective rigid connection between cooling fan and blower tray, change the Modal frequency of cooling fan system under the high temperature conditions, single order driving frequency of the cooling fan in high-speed cruising is avoided, solves the problems, such as steering wheel shake during cooling fan high-speed cruising under hot conditions.
Description
Technical field
The utility model is related to a kind of vibration damping cooling fan system and apply its automobile.
Background technology
Under the main trend of current automotive light weight technology, during a large amount of composite materials are applied to automotive development and produce.It is compound
The material mechanical performance variation with temperature of material tends to be ignored early period in exploitation, and late design is caused to be needed when changing
A large amount of expense is wanted, automotive development progress has been seriously affected while increasing development cost.
For example, the fan of two grades of settings can switch to high-grade high-speed cruising in the case where environment temperature is higher.If fan
Stent is made of composite material, and the system Modal frequency under the high temperature conditions of cooling fan and blower tray composition will
It is different from the Modal frequency under normal temperature condition.Cooling fan system, under normal temperature condition (21 degree) and under hot conditions (60
Degree) Modal frequency difference it is as shown in Figure 1.Wherein, dotted line represents the transfer curve under normal temperature condition, single order
Intrinsic frequency is 49Hz；Solid line represents the transfer curve under hot conditions, first natural frequency 43.7Hz.Cooling wind
It is 43-45Hz to fan the single order driving frequency in high-speed cruising.It follows that when blower tray temperature increases, cooling fan
Single order driving frequency coupled with the Modal frequency of cooling fan system, generate resonance.
Therefore, in setting early period mode requirement, mode of the cooling fan system under normal temperature condition is not only considered
It is required that it is contemplated that mode under the high temperature conditions requires.
Utility model content
Technical problem to be solved in the utility model is to overcome cooling fan system of the prior art in high temperature
Under the conditions of Modal frequency coupled with single order driving frequency during cooling fan high-speed cruising, generate resonance, make steering wheel
It shakes the defects of violent, and a kind of vibration damping cooling fan system is provided and applies its automobile.
The utility model solves above-mentioned technical problem by the following technical programs：
The utility model provides a kind of vibration damping cooling fan system, including blower tray, cooling fan and multiple installations
Mounting assembly, the installation mounting assembly include locating part, and the locating part is circumferentially arranged with limiting slot；The cooling fan is set
There are multiple fixing legs, the quantity of the fixing leg, position are corresponding with the installation mounting assembly, and the fixing leg is set
There is the position-limited edge that can be caught in the limiting slot；The position-limited edge of the fixing leg is caught in the limiting slot of the locating part, institute
It states locating part to be fixed on the blower tray, the fixing leg is pressed on the blower tray, the wind of the cooling fan
The bracket edge for fanning edge and the blower tray is in close contact.
Preferably, the blower tray has multiple putting holes, quantity, position and the locating part phase of the putting hole
Corresponding, the locating part is positioned in the putting hole.
Preferably, the installation mounting assembly further includes fixing bolt, the locating part, which is additionally provided with, to be axially extended
Heart hole；The fixing bolt is fixed after passing through the centre bore of the locating part with the blower tray.
Preferably, the installation mounting assembly further includes bushing, the bushing is located at the fixing bolt and the limiting
Between part.
Preferably, the bushing includes sleeve and is fixed on the annular flange of the end of the sleeve, the sleeve is inserted into
In the centre bore, the annular flange is in contact with distal face of the locating part far from the blower tray, the fixation
Bolt is inserted into the centre bore, and the head of the fixing bolt is against in the annular flange.
Preferably, the limiting slot is to the locating part towards the distance between proximal end face of the blower tray
The distance between 3.45mm, the limiting slot to distal face of the locating part far from the blower tray is 8.45mm.
Preferably, the locating part is made of elastomeric material.
Preferably, the locating part is made of rubber.
The utility model provides a kind of automobile, and the automobile includes above-mentioned vibration damping cooling fan system.
On the basis of common knowledge of the art, above-mentioned each optimum condition, can arbitrarily combine to get the utility model respectively compared with
Good example.
The positive effect of the utility model is：
The vibration damping cooling fan system and apply its automobile, in the case where not changing other component, by installation
The structure design of mounting assembly, enables fixing leg to be effectively pressed on blower tray, at the same the fan edge of cooling fan with
The bracket edge of blower tray is in close contact, and effective rigid connection is formed between cooling fan and blower tray, extremely successful
Ground changes the Modal frequency of vibration damping cooling fan system under the high temperature conditions, avoids cooling fan in high-speed cruising
When single order driving frequency, steering wheel shake when finally solving the problems, such as cooling fan high-speed cruising under hot conditions.
Description of the drawings
Fig. 1 is the test of Modal frequency of the existing vibration damping cooling fan system under normal temperature condition and hot conditions
Datagram.
Fig. 2 is the structure diagram of one embodiment vibration damping cooling fan system of the utility model.
Fig. 3 is the partial enlarged view of the a-quadrant of vibration damping cooling fan system shown in Fig. 2.
Fig. 4 is the partial enlarged view of the B area of vibration damping cooling fan system shown in Fig. 2.
Fig. 5 is the front view of vibration damping cooling fan system shown in Fig. 2.
Fig. 6 is the sectional view of vibration damping cooling fan system shown in fig. 5.
Fig. 7 is the partial enlarged view of vibration damping cooling fan system shown in fig. 6.
Fig. 8 is blower tray shown in Fig. 2 and the relative position schematic diagram of fixing leg.
Fig. 9 is locating part, the structure diagram of bushing in installation mounting assembly shown in Fig. 2.
Figure 10 is the front view of locating part shown in Fig. 9, bushing.
Figure 11 is the sectional view of locating part shown in Fig. 10, bushing.
Figure 12 is the structure diagram of the fixing bolt in installation mounting assembly shown in Fig. 2.
Figure 13 is installation mounting assembly shown in Fig. 2 and blower tray, the connection diagram of fixing leg.
Figure 14 is the schematic diagram of the mechanical model of viscous damping system.
Figure 15 is the interior mechanics relationship of cooling fan system of the prior art and the vibration damping cooling fan of the present embodiment
The comparison diagram of the interior mechanics relationship of system.
Figure 16 is the vibration comparison diagram of the vehicle steering wheel of the prior art and the vehicle steering wheel of the present embodiment.
Reference sign
Blower tray 1
Putting hole 11
Connecting hole 12
Bracket edge 13
Cooling fan 2
Fixing leg 21
Position-limited edge 22
Fan edge 23
Mounting assembly 3 is installed
Locating part 31
Limiting slot 311
Centre bore 312
Proximal end face 313
Distal face 314
Fixing bolt 32
Head 321
Bushing 33
Sleeve 331
Annular flange 332
Specific embodiment
The various embodiments of the utility model will be described with reference to the drawings.In Figure of description, there are similar structures
Or the element of function will be represented with identical component symbol.It is to be appreciated that attached drawing is only to facilitate illustrate the utility model
Each embodiment, be not intended to carry out exhaustive explanation to the utility model, nor to the scope of the utility model into
Row limitation.
The one of the utility model vibration damping cooling fan system implements for example shown in Fig. 2 to Figure 13.The vibration damping cooling fan system
System includes blower tray 1, cooling fan 2 and four installation mounting assemblies 3 (as shown in Figure 2 and Figure 5).As shown in Fig. 3 to Figure 13,
Mounting assembly 3 is installed and includes locating part 31, locating part 31 is circumferentially arranged with limiting slot 311；Cooling fan 2 fixes branch there are four setting
Foot 21, each fixing leg 21 are fixed on by an installation mounting assembly 3 on blower tray 1, and fixing leg 21, which is equipped with, to block
Enter the position-limited edge 22 in limiting slot 311, the position-limited edge 22 of fixing leg 21 is caught in the limiting slot 311 of locating part 31, locating part
31 are fixed on blower tray 1, and fixing leg 21 is pressed on blower tray 1, the fan edge 23 and blower tray of cooling fan 2
1 bracket edge 13 is in close contact.The quantity of the fixing leg 21 of the present embodiment is four, the actually quantity of fixing leg 21
It can be adjusted according to actual demand.
Under normal circumstances, when driving force frequency is equal or close with system frequency, the amplitude of forced vibration reaches
It is maximum.This phenomenon is known as resonating.
Single-mode system is most basic vibrational system.Although practical structures are many-degrees of freedom system, single-degree-of-freedom
The analysis of system can disclose many basic characteristics of vibrational system.
For viscous damping system, it is assumed that its damping force is directly proportional to vibration velocity, and direction is with speed on the contrary, i.e.
The mechanical model of viscous damping system is as shown in figure 14.Its vibration motion equation is：
In formula：X and f is the function of time t.
For free vibration (f=0), above formula can be written as：
Its solve form be：X=Xest (1-4)
In formula：S is plural number；X is the amount for not depending on the time.
Laplace transform is carried out to (1-2) formula both sides, and assumes that initial value is 0, can be obtained
(ms2+ cs+k) x (s)=f (s) (1-5)
In formula：S is the Laplace transformation factor；X (s) is the Laplace transformation of x (t), and f (s) is then the Laplace transformation of f (t).
For free vibration, it can obtain
ms2+ cs+k=0 (1-6)
Two roots of s can be solved by above formula,
In formula,Undamped natural frequency of a mechanical system for system；ζ is damping ratio.
ζ is dimensionless factor.General steel construction belongs to small damping, and ζ=0.01~0.1 is known as owing resistance to the damping of ζ ＜ 1
Buddhist nun.
The derivation of multiple degrees of freedom intrinsic frequency is similar with above-mentioned derivation, how many degree of freedom is with regard to how many rank mode.In short,
Mode is the build-in attribute of system.Wherein, the effective rigidity of the intrinsic frequency under certain first-order modal and the rank mode, effective mass
It is related, by changing the effective rigidity of system, effective mass with regard to the intrinsic frequency of certain first-order modal can be changed.
Specific to the present embodiment, the structure of mounting assembly 3 is installed by change, so as to change cooling fan 2 and fan branch
The connection relation of frame 1 just changes the interior mechanics relationship of whole system, so as to change the intrinsic frequency of the first-order modal of whole system
Rate.
It is further elucidated above as shown in figure 15, wherein, M1 is the quality of cooling fan 2, and M2 is the quality of blower tray 1,
K1 is the rigidity for installing mounting assembly 3, and K2 is the coupling stiffness of blower tray 1 and vehicle body.
Figure shown on the left of Figure 15 is the interior mechanics relationship of the cooling fan system of the prior art, it is known that, existing peace
After cooling fan 2 is connect by dress mounting assembly 3 with blower tray 1, not it is rigidly connected between cooling fan 2 and blower tray 1,
With stiffness K 1.And the present embodiment improves installation mounting assembly 3, by installing mounting assembly 3 by fixing leg 21
It is pressed on blower tray 1, the fan edge 23 of cooling fan 2 is in close contact with the bracket edge 13 of blower tray 1, makes cooling wind
It is formed and is rigidly connected between fan 2 and blower tray 1, as shown in the figure on the right side of Figure 15.
Through this embodiment to the improvement of installation mounting assembly 3, the effective rigidity of entire cooling fan system and effective matter
Amount changes, and the Modal frequency of the system under the high temperature conditions is reduced to 40Hz hereinafter, successfully avoid 43~
The single order driving frequency of 45Hz finally solves the problems, such as steering wheel shake during 2 high-speed cruising of cooling fan under hot conditions.
As shown in figure 8 and 13, blower tray 1 has multiple putting holes 11, quantity, position and the locating part of putting hole 11
31 is corresponding, and locating part 31 is positioned in putting hole 11.Putting hole 11 is limited by putting hole 11 and limited for accommodating locating part 31
The position of position part 31, further ensures and rigid connection is formed between cooling fan 2 and blower tray 1.
A kind of preferred structure of installation mounting assembly 3 of the present embodiment is as shown in Fig. 9 to Figure 12.Wherein, Fig. 9 to Figure 11 is
The structure diagram of locating part 31 and bushing 33, Figure 12 are the structure diagram of fixing bolt 32.
The installation mounting assembly 3 and the connection of blower tray 1, fixing leg 21 are as shown in figure 13, and locating part 31 is to pass through
Fixing bolt 32 is fixed on blower tray 1.Its concrete structure is：Locating part 31 is additionally provided with the centre bore axially extended
312；Fixing bolt 32 is fixed after passing through the centre bore 312 of locating part 31 with blower tray 1.Wherein, blower tray 1 (is placed
The bottom surface in hole 11) on can also be equipped with connecting hole 12, fixing bolt 32 be inserted into the connecting hole 12 in and with 12 screw thread of connecting hole connect
It connects or across again being fixed fixing bolt 32 by other fixing pieces after the connecting hole 12.
In order to increase the intensity of locating part 31, ensure that fixing bolt 32 can be stably fixed in locating part 31, fixed spiral shell
Bushing 33 is additionally provided between bolt 32 and locating part 31.Specifically, as shown in Figures 9 to 11, bushing 33 is including sleeve 331 and admittedly
Due to the annular flange 332 of the end of sleeve 331, sleeve 331 is inserted into centre bore 312, and annular flange 332 is remote with locating part 31
Distal face 314 from blower tray 1 is in contact, and fixing bolt 32 is inserted into centre bore 312, and the head 321 of fixing bolt 32 is supported
In annular flange 332.By setting above-mentioned bushing 33, it is ensured that the intensity and fixing bolt 32 of locating part 31 are in locating part 31
In position, so as to ensure that the rigid connection between cooling fan 2 and blower tray 1.
As shown in Figure 10, by data analysis and test, limiting slot 311 to locating part 31 is towards the proximal end of blower tray 1
The distance between face 313 L1Preferably 3.45mm, between distal face 314 of the limiting slot 311 to locating part 31 far from blower tray 1
Distance L2Preferably 8.45mm.Using the locating part 31 of the size, to changing the intrinsic frequency of mode of system under the high temperature conditions
Rate is highly effective, can successfully avoid single order driving frequency during cooling fan high-speed cruising.
Above-mentioned locating part 31 is preferably made of elastomeric material, is further preferably made of rubber.Use elastomer
Locating part 31 made of material can effectively be such that fixing leg 21 is pressed on blower tray 1, make cooling fan 2 and fan branch
Effective rigid connection is formed between frame 1.Rubber has especially excellent cold resistance, wearability and elasticity, also has preferable
Ageing-resistant performance, therefore locating part 31 is preferably made of rubber.
By the above-mentioned structure design to installing mounting assembly 3, fixing leg 21 is enable effectively to be pressed in blower tray 1
On, the fan edge 23 of cooling fan 2 is in close contact with the bracket edge 13 of blower tray 1, cooling fan 2 and blower tray 1
Between form effective rigid connection.The structure design of above-mentioned vibration damping cooling fan system, changes the system very successfully
Modal frequency under the high temperature conditions avoids single order driving frequency of the cooling fan in high-speed cruising.
The vibration damping cooling fan system of above-described embodiment is installed on automobile, and tested.It is existing under hot conditions
The vibration comparison diagram of the vehicle steering wheel of technology and the vehicle steering wheel of the present embodiment is as shown in figure 16.It is existing skill on the left of Figure 16
The vibration acceleration of the vehicle steering wheel of art, vibration acceleration of Figure 16 right sides for the vehicle steering wheel of the present embodiment.As it can be seen that it adopts
After the vibration damping cooling fan system of the present embodiment, the vibration amplitude of vehicle steering wheel substantially reduces, and solves under hot conditions
The problem of steering wheel during cooling fan high-speed cruising is shaken.
The utility model is not limited to the above embodiment, no matter making any variation in its shape or structure, all falls within
Within the scope of protection of the utility model.The scope of protection of the utility model is defined by the appended claims, this field
Technical staff under the premise of the principle and essence without departing substantially from the utility model, a variety of changes can be made to these embodiments
More or change, but these change and modification each fall within the scope of protection of the utility model.
Claims (9)
1. a kind of vibration damping cooling fan system, which is characterized in that including：
Blower tray；
Multiple installation mounting assemblies, the installation mounting assembly include locating part, and the locating part is circumferentially arranged with limiting slot；
Cooling fan, the cooling fan are equipped with multiple fixing legs, and the quantity of the fixing leg, position are hanged with the installation
Put that component is corresponding, the fixing leg is equipped with the position-limited edge that can be caught in the limiting slot；
The position-limited edge of the fixing leg is caught in the limiting slot of the locating part, and the locating part is fixed on the blower tray
On, the fixing leg is pressed on the blower tray, the fan edge of the cooling fan and the stent of the blower tray
Edge is in close contact.
2. vibration damping cooling fan system as described in claim 1, wherein, the blower tray has multiple putting holes, described
The quantity of putting hole, position are corresponding with the locating part, and the locating part is positioned in the putting hole.
3. vibration damping cooling fan system as described in claim 1, wherein, the installation mounting assembly further includes fixing bolt,
The locating part is additionally provided with the centre bore axially extended；The fixing bolt pass through the locating part centre bore after with it is described
Blower tray is fixed.
4. vibration damping cooling fan system as claimed in claim 3, wherein, the installation mounting assembly further includes bushing, described
Bushing is between the fixing bolt and the locating part.
5. vibration damping cooling fan system as claimed in claim 4, wherein, the bushing includes sleeve and is fixed on the sleeve
End annular flange, the sleeve is inserted into the centre bore, and the annular flange is with the locating part far from the wind
The distal face of fan stent is in contact, and the fixing bolt is inserted into the centre bore, and the head of the fixing bolt is against described
In annular flange.
6. vibration damping cooling fan system as described in claim 1, wherein, the limiting slot to the locating part is towards the wind
The distance between proximal end face of stent is fanned as 3.45mm, the limiting slot to distal end of the locating part far from the blower tray
The distance between face is 8.45mm.
7. vibration damping cooling fan system as described in claim 1, wherein, the locating part is made of elastomeric material.
8. vibration damping cooling fan system as described in claim 1, wherein, the locating part is made of rubber.
9. a kind of automobile, it is characterised in that：The automobile includes claim 1 to 8 any one of them vibration damping cooling fan system
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555574.0U CN207583482U (en) | 2017-11-20 | 2017-11-20 | Vibration damping cooling fan system and apply its automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555574.0U CN207583482U (en) | 2017-11-20 | 2017-11-20 | Vibration damping cooling fan system and apply its automobile |
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| Publication Number | Publication Date |
|---|---|
| CN207583482U true CN207583482U (en) | 2018-07-06 |
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| CN201721555574.0U Active CN207583482U (en) | 2017-11-20 | 2017-11-20 | Vibration damping cooling fan system and apply its automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781024A (en) * | 2017-11-20 | 2018-03-09 | 观致汽车有限公司 | Vibration damping cooling fan system and apply its automobile |
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2017
- 2017-11-20 CN CN201721555574.0U patent/CN207583482U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107781024A (en) * | 2017-11-20 | 2018-03-09 | 观致汽车有限公司 | Vibration damping cooling fan system and apply its automobile |
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