CN208360312U - A kind of adjustable automobile accessory frame of dynamic characteristic and body connection device - Google Patents
A kind of adjustable automobile accessory frame of dynamic characteristic and body connection device Download PDFInfo
- Publication number
- CN208360312U CN208360312U CN201820798802.5U CN201820798802U CN208360312U CN 208360312 U CN208360312 U CN 208360312U CN 201820798802 U CN201820798802 U CN 201820798802U CN 208360312 U CN208360312 U CN 208360312U
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- CN
- China
- Prior art keywords
- rubber bushing
- ceramic actuator
- piezoelectric ceramic
- dynamic characteristic
- protective cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Vibration Prevention Devices (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The utility model discloses a kind of adjustable automobile accessory frame of dynamic characteristic and body connection devices; including pedestal, dust cover, piezoelectric ceramics protective cover and the connecting plate being sequentially connected from top to bottom; rubber bushing is installed inside dust cover; the bottom of rubber bushing passes through connecting flange under rubber bushing and is connected with pedestal, and the top of rubber bushing is connected by connecting flange on rubber bushing with piezoelectric ceramics protective cover；Spring is equipped with inside rubber bushing; the lower end of spring is connected with pedestal; the upper end of spring is connected by connecting flange on spring with piezoelectric ceramic actuator; piezoelectric ceramic actuator is connected with connecting shaft; piezoelectric ceramics protective cover is equipped with long through-hole; connecting shaft is arranged in the inside of long through-hole, and the end of connecting shaft is equipped with friction block, and friction block is located at the outside of piezoelectric ceramics protective cover.The adjustable automobile accessory frame of dynamic characteristic provided by the utility model and body connection device structure are simple, and subframe stiffness characteristics, but also adjustable subframe damping characteristic is not only adjusted.
Description
Technical field
The utility model belongs to automotive manufacturing engineering technical field, and in particular to a kind of adjustable automobile pair vehicle of dynamic characteristic
Frame and body connection device.
Background technique
At this stage, with the continuous enhancing of people's environmental protection consciousness, the acoustics and vibration comfort of vehicle interior more come
More it attracts extensive attention, has developed into important vehicle performance index, become the new focus of technology competition.And subtract as important
Isolation mounting, subframe are widely used in all kinds of large and medium-sized automobiles, to the vibration of inhibition body structure and due to structural vibration
The acoustic radiation of initiation plays the important and pivotal role.
Subframe can regard the skeleton of tandem axle as, be the component part of tandem axle.Subframe is not complete
Vehicle frame only supports the bracket of tandem axle, suspension, and vehicle bridge, suspension is made to be connected again with " positive vehicle frame " by it.Traditional secondary vehicle
Frame form can be divided into according to the difference that its structure is arranged: " well " font subframe and " I " font subframe；According to itself and vehicle body
The difference of connection type can be divided into: " rigidity " subframe and " flexibility " subframe.No matter which kind of concrete type, working principle is equal
For with the excitation of the deformation decaying suspension transmitting of itself, and due to the quality of actual vehicle model chassis system and its related elements point
There are many restrictions for cloth, space layout and movement relation, constrain the reasonable layout of subframe dynamic characteristic.It is embodied as pair
Dynamic characteristic is fixed after vehicle frame entrucking, it is difficult to be realized to (this improvement ten to interior acoustic environment of the selective depression of resonance peak
Divide important), it is unable to satisfy vehicle user increasingly harsh acoustics and vibration comfort requirement.It is contemplated that traditional subframe knot
Structure can not adapt to the matched technical conditions of vehicle at last, and it is imperative that breakthrough traditional working principle is implemented to reform to it.
In existing technology, such as: patent " a kind of new automobile subframe bushing (CN103821860A) ", work
Principle and structural shape predominantly prevent bush inside ponding, substantially still without departing from the uncontrollable scope of dynamic characteristic.And
Patent " a kind of the Rear secondary frame for vehicle of automobile (CN102351010A) is connect with vehicle body ", though the company of increasing between subframe and vehicle body
Connection device, only for the purpose of increasing the maximum load that vehicle body is able to bear, not in view of promoted the noise of vehicle, vibration with it is comfortable
Performance --- the unicity in this working principle largely reduced the diversity, integration and designability of structure function.
Utility model content
The purpose of this utility model is to solve the above problems, and providing a kind of can introduce pair for the adjustable thought of dynamic characteristic
In the working principle of body frame structure for automotive, rigidity and the adjustable device of damping value is added come indirectly using in subframe and vehicle body junction
Change the dynamic characteristic of subframe, thus reach the alternative adjustable automobile accessory frame of dynamic characteristic for inhibiting resonance peak with
Body connection device.
In order to solve the above technical problems, the technical solution of the utility model is: a kind of adjustable automobile pair vehicle of dynamic characteristic
Frame and body connection device are prevented including pedestal, dust cover, piezoelectric ceramics protective cover and the connecting plate being sequentially connected from top to bottom
Rubber bushing is installed, the bottom of rubber bushing is connected by connecting flange under rubber bushing with pedestal, rubber lining inside dust hood
The top of set is connected by connecting flange on rubber bushing with piezoelectric ceramics protective cover；Spring, spring are equipped with inside rubber bushing
Lower end be connected with pedestal, the upper end of spring is connected by connecting flange on spring with piezoelectric ceramic actuator, piezoelectric ceramics work
Dynamic device is connected with connecting shaft, and piezoelectric ceramics protective cover is equipped with long through-hole, and connecting shaft is arranged in the inside of long through-hole, connecting shaft
End is equipped with friction block, and friction block is located at the outside of piezoelectric ceramics protective cover.
Preferably, the piezoelectric ceramic actuator is cylindrical shape structure, opens up that there are four right on piezoelectric ceramic actuator
Claim the piezoelectric ceramic actuator groove of arrangement, electroceramics actuator groove is half cylindrical structure, piezoelectric ceramic actuator groove
The interior direction along piezoelectric ceramic actuator own axes is equipped with piezoelectric ceramic actuator hole.
Preferably, the pedestal is connected with connecting flange under rubber bushing by screw.
Preferably, connecting flange is connected with piezoelectric ceramics protective cover by screw on the spring.
Preferably, the piezoelectric ceramic actuator is equipped with piezoelectric ceramic actuator outlet hole, and piezoelectric ceramic actuator goes out
Piezoelectric ceramic actuator pressure-wire is equipped in string holes.
Preferably, the dust cover is circular column structure, and dust cover can be flexible along own axes direction.
Preferably, the quantity of the long through-hole is four, and the axis of adjacent long through-hole is orthogonal, wears in each long through-hole
There is connecting shaft.
Preferably, the friction block is connected by lock-screw with connecting shaft, and the rubbing surface and piezoelectric ceramics of friction block are protected
The rubbing surface of shield is corresponding.
The beneficial effects of the utility model are:
1, a kind of adjustable automobile accessory frame of dynamic characteristic provided by the utility model and body connection device structure letter
It is single, without modifying to subframe prototype structure.
2, subframe stiffness characteristics, but also adjustable subframe damping characteristic is not only adjusted in the utility model.
3, by changing the dynamic characteristic of subframe, resonance peak of the subframe in special frequency channel can be reduced, vehicle is mitigated
Interior structural vibration radiated noise promotes vehicle NVH performance and interior acoustic enviroment effect.
4, the very strong mechanical-electric coupling performance that the piezoceramic material that the utility model uses has, small in size, structure letter
It is single, noiseless.
Detailed description of the invention
Fig. 1 is that the half-sectional structure of a kind of adjustable automobile accessory frame of dynamic characteristic of the utility model and body connection device is shown
It is intended to；
Fig. 2 is the structural schematic diagram of the utility model rubber bushing；
Fig. 3 is the structural schematic diagram of the utility model piezoelectric ceramics protective cover；
Fig. 4 is the utility model piezoelectric ceramic actuator structural schematic diagram；
Fig. 5 is the structural schematic diagram of the utility model connecting shaft.
Description of symbols: 1, pedestal；2, connecting flange under spring；3, connecting flange under rubber bushing；4, rubber bushing；
5, spring；6, connecting flange on rubber bushing；7, connecting flange on spring；8, friction block；9, long through-hole；11, connecting shaft；12,
Connecting shaft fixing bolt；13, piezoelectric ceramic actuator；14, piezoelectric ceramic actuator pressure-wire；15, connecting plate；16, piezoelectricity is made pottery
Porcelain protective cover；17, dust cover；111, connecting shaft hole；131, piezoelectric ceramic actuator groove；132, piezoelectric ceramic actuator hole.
Specific embodiment
The utility model is described further in the following with reference to the drawings and specific embodiments:
As shown in Fig. 1 to Fig. 5, a kind of adjustable automobile accessory frame of dynamic characteristic provided by the utility model is connect with vehicle body
Device, including pedestal 1, dust cover 17, piezoelectric ceramics protective cover 16 and the connecting plate 15 being sequentially connected from top to bottom, dust cover 17
Inside is equipped with rubber bushing 4, and the bottom of rubber bushing 4 is connected by connecting flange 3 under rubber bushing with pedestal 1, rubber lining
The top of set 4 is connected by connecting flange 6 on rubber bushing with piezoelectric ceramics protective cover 16；Spring is equipped with inside rubber bushing 4
5, the lower end of spring 5 is connected with pedestal 1, and the upper end of spring 5 passes through connecting flange 7 and 13 phase of piezoelectric ceramic actuator on spring
Even, piezoelectric ceramic actuator 13 is connected with connecting shaft 11, and piezoelectric ceramics protective cover 16 is equipped with long through-hole 9, and connecting shaft 11 is worn
In the inside of long through-hole 9, the end of connecting shaft 11 is equipped with friction block 8, and friction block 8 is located at the outside of piezoelectric ceramics protective cover 16.
In the present embodiment, the bottom of pedestal 1 can be connect with automobile accessory frame, and the top surface of connecting plate 15 and automobile frame connect
It connects.
Spring 5 is located on spring under connecting flange 7 and spring between connecting flange 2.Connecting flange 7 and piezoelectricity are made pottery on spring
Porcelain protective cover 16 is connected by screw.
Rubber bushing 4 is the column structure of ring-shaped, and rubber bushing 4 is located at connecting flange 6 and rubber on rubber bushing and serves as a contrast
It covers between lower connecting flange 3.Pedestal 1 is connected with connecting flange 3 under rubber bushing by screw.
Piezoelectric ceramic actuator 13 is cylindrical shape structure, opens up that there are four be arranged symmetrically on piezoelectric ceramic actuator 13
Piezoelectric ceramic actuator groove 131, electroceramics actuator groove 131 are half cylindrical structure, piezoelectric ceramic actuator groove 131
The interior direction along 13 own axes of piezoelectric ceramic actuator is equipped with piezoelectric ceramic actuator hole 132.Connecting shaft 11, which is equipped with, to be connected
Spindle hole 111, connecting shaft hole 111 are matched with piezoelectric ceramic actuator hole 132, and lock-screw passes through connecting shaft hole 111 and pressure
Electroceramics actuator hole 132, piezoelectric ceramic actuator 13 and connecting shaft 11 are connected together.
The quantity of connecting shaft 11 is four in the present embodiment, and two neighboring connecting shaft 11 is orthogonal.Piezoelectric ceramics is made
Dynamic device 13 can control connecting shaft 11 and move along long through-hole 9 during the application of external voltage.
Piezoelectric ceramic actuator 13 is equipped with piezoelectric ceramic actuator outlet hole, wears in piezoelectric ceramic actuator outlet hole
There is piezoelectric ceramic actuator pressure-wire 14.The end of piezoelectric ceramic actuator pressure-wire 14 is connected with piezoelectric ceramic actuator 13,
The other end of piezoelectric ceramic actuator pressure-wire 14 is connected with external power supply.External power supply passes through piezoelectric ceramic actuator pressure-wire
14 pairs of piezoelectric ceramic actuators 13 apply voltage, and piezoelectric ceramic actuator 13 is able to drive connecting shaft 11 to piezoelectric ceramic actuator
13 inside are mobile.
Dust cover 17 is circular column structure, and dust cover 17 can be flexible along own axes direction.
The quantity of long through-hole 9 is four, and the axis of adjacent long through-hole 9 is orthogonal, is equipped with connecting shaft in each long through-hole 9
11。
Friction block 8 is connected by lock-screw with connecting shaft 11, rubbing surface and the piezoelectric ceramics protective cover 16 of friction block 8
Rubbing surface is corresponding.There is certain interval, piezoelectric ceramics between the rubbing surface of friction block 8 and the rubbing surface of piezoelectric ceramics protective cover 16
The area of the rubbing surface of protective cover 16 is greater than corresponding area on friction block 8.Friction block 8 during the work time, can
It is always ensured that and works in most effective region.
The working principle of the utility model for ease of understanding describes the course of work of the utility model one time:
When subframe and vehicle body work normally, when the outside of piezoelectric ceramic actuator 13 does not apply voltage, load is complete
It is born entirely by rubber bushing 4, spring 5 does not work, and spring 5 constitutes spring-quality system, and rubber bushing 4 constitutes rubber bushing-
Quality system, spring-quality system and rubber bushing-quality system are mutually indepedent at this time.When subframe and vehicle body resonate
Or when generating abnormal sound, the outside of piezoelectric ceramic actuator 13 applies control voltage, pressure by piezoelectric ceramic actuator pressure-wire 14
Micro-displacement occurs for electroceramics actuator 13 to drive connecting shaft 11 and friction block 8 to contract to contract.Friction block 8 with
Have certain primary clearance on the outside of piezoelectric ceramics protective cover 16, when the displacement of friction block 8 be greater than primary clearance when, friction block 8 with
Piezoelectric ceramics protective cover 16 generates frictional force.If further increasing control voltage, piezoelectric ceramic actuator 13 will pass through connection
Axis 11 makes friction block 8 be pressed on the outside of piezoelectric ceramics protective cover 16.With the relative motion of subframe and vehicle body, friction block 8
Dry friction occurs with the outside of piezoelectric ceramics protective cover 16 to change the damping characteristic of system, this mode is referred to as to change damping
Working method, i.e., as the pressure between friction block 8 and piezoelectric ceramics protective cover 16 increases, the rigidity of system is temporarily by rubber bushing
4 determine, and the equivalent damping of system increases；As the pressure between friction block 8 and piezoelectric ceramics protective cover 16 continues to increase, rub
Cleaning block 8 is in sliding and viscous working range, and gradually coupling operational, the rigidity of system increase, that is, mentions for spring 5 and rubber bushing 4
The high intrinsic frequency of system can pass through at this time and apply external voltage appropriate and obtain suitable rigidity and damping characteristic.When rubbing
Wiping power is more than certain limit value (i.e. maximum pressure of the frictional force greater than spring works), friction block 8 and piezoelectric ceramics protective cover 16
Relative motion is no longer generated, spring 5 and rubber bushing 4 work together, and the rigidity of system reaches maximum, and the intrinsic frequency of system is most
Height, this mode are referred to as to change rigidity working method, this working method can be used for avoiding across subframe natural mode of vibration Frequency point
Resonance.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this reality
With novel principle, it should be understood that the scope of the present invention is not limited to such specific embodiments and embodiments.
Those skilled in the art can be made according to the technical disclosures disclosed by the utility model it is various do not depart from it is practical
Novel substantive various other specific variations and combinations, these variations and combinations are still within the protection scope of the present invention.
Claims (8)
1. a kind of adjustable automobile accessory frame of dynamic characteristic and body connection device, it is characterised in that: including from top to bottom successively
Connected pedestal (1), dust cover (17), piezoelectric ceramics protective cover (16) and connecting plate (15), dust cover (17) is internal to be equipped with
The bottom of rubber bushing (4), rubber bushing (4) is connected by connecting flange (3) under rubber bushing with pedestal (1), rubber bushing
(4) top is connected by connecting flange (6) on rubber bushing with piezoelectric ceramics protective cover (16)；It is set inside rubber bushing (4)
Have spring (5), the lower end of spring (5) is connected with pedestal (1), and the upper end of spring (5) passes through connecting flange (7) and piezoelectricity on spring
Ceramic actuator (13) is connected, and piezoelectric ceramic actuator (13) is connected with connecting shaft (11), and piezoelectric ceramics protective cover is set on (16)
Have long through-hole (9), connecting shaft (11) is arranged in the inside of long through-hole (9), and the end of connecting shaft (11) is equipped with friction block (8), rubs
Cleaning block (8) is located at the outside of piezoelectric ceramics protective cover (16).
2. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
Stating piezoelectric ceramic actuator (13) is cylindrical shape structure, opens up that there are four the pressures being arranged symmetrically on piezoelectric ceramic actuator (13)
Electroceramics actuator groove (131), electroceramics actuator groove (131) are half cylindrical structure, piezoelectric ceramic actuator groove
(131) piezoelectric ceramic actuator hole (132) are equipped with along the direction of piezoelectric ceramic actuator (13) own axes in.
3. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
It states pedestal (1) and is connected with connecting flange under rubber bushing (3) by screw.
4. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
It states connecting flange on spring (7) and is connected with piezoelectric ceramics protective cover (16) by screw.
5. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
It states piezoelectric ceramic actuator (13) and is equipped with piezoelectric ceramic actuator outlet hole, be equipped with pressure in piezoelectric ceramic actuator outlet hole
Electroceramics actuator pressure-wire (14).
6. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
Stating dust cover (17) is circular column structure, and dust cover (17) can be flexible along own axes direction.
7. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
The quantity for stating long through-hole (9) is four, and the axis of adjacent long through-hole (9) is orthogonal, is equipped with connecting shaft in each long through-hole (9)
(11)。
8. the adjustable automobile accessory frame of dynamic characteristic according to claim 1 and body connection device, it is characterised in that: institute
It states friction block (8) to be connected by lock-screw with connecting shaft (11), the rubbing surface of friction block (8) and piezoelectric ceramics protective cover (16)
Rubbing surface it is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798802.5U CN208360312U (en) | 2018-05-25 | 2018-05-25 | A kind of adjustable automobile accessory frame of dynamic characteristic and body connection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820798802.5U CN208360312U (en) | 2018-05-25 | 2018-05-25 | A kind of adjustable automobile accessory frame of dynamic characteristic and body connection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208360312U true CN208360312U (en) | 2019-01-11 |
Family
ID=64930298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820798802.5U Expired - Fee Related CN208360312U (en) | 2018-05-25 | 2018-05-25 | A kind of adjustable automobile accessory frame of dynamic characteristic and body connection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208360312U (en) |
-
2018
- 2018-05-25 CN CN201820798802.5U patent/CN208360312U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190111 Termination date: 20210525 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |