JPS5923139A - Vibration absorbing method - Google Patents

Abstract

PURPOSE:To absorb displacement of vibration by applying to a voltage distorting element a voltage which varies synchronously with a period of vibration delivered through a vibration transmitting course. CONSTITUTION:Each voltage distorting element 3 is made of a ceramic material such as barium titanate or the like and produces distortion in the direction of increasing the thickness of a plate in accordance with the voltage of a dc current which is applied between plates. The voltage distorting elements 3 are laminated with electrode sheets 6 and 7 therebetween, the sheets 6 being connected to each other by electrode connecting members 8 and the sheets 7 being connected to each other by an electrode connecting member 9. By applying a voltage between both electrode connecting members 8 and 9, the voltage may be applied on every voltage distorting element 3 uniformly at the same time. A vibration absorber 100 is set up in such a way that the lamination consisting of a plurality of the sheet-like voltage distortion elements 3 is placed between plate members 1 and 2 and tightened with bolts 4 and 5, and has a vibro-isolation rubber 12 connected thereto by plate members 11 and 2. A voltage generator 20 develops a voltage, which is applied to the voltage distorting element 3 synchronously with forced vibration of an Internal combustion engine with 180 deg. phase difference theretween.

Description

[Detailed Description of the Invention] Kikomei is concerned with vibration absorption methods, especially for the center shafts of automobiles, etc.
Second, it relates to a vibration absorption method for preventing vibrations of the prime mover from being transmitted to the vehicle body.

General reciprocating internal combustion type used for internal combustion engines such as automobiles (how many yl tel, fluctuation of gas pressure, rotation Y!(amount, (
] One boat Y' (11) The excitation force caused by the unbalance of The transmission, vibration, and noise caused me to experience 15 degrees of fatigue, and I felt a sense of discomfort at the exit of the vehicle.

11 Notification Seki vibrations were taken from the source Dozuru car (ho 1 riding 11 (reduced)
Conventionally, there are various measures to reduce internal combustion (Asaseki's forced vibration vibration 1 novel).
Yes, the other one is a suspension from the small bowl of the internal combustion 11 station;,!
, : jM' I:l Incorporate the vibration isolation-111 device, and install the vibration isolation rubber device [IY? According to IF, it function 1h (attenuates the movement I
] This is a measure to avoid engine vibrations transmitted to the car body and reduce the noise level. Internal combustion (Measures to avoid lowering the 1.1 dynamic level of Asaseki's forced vibration (j major vehicle body vibration reduction or j Song 1q, but balance 5 sushito) I to 1!tx i
Due to power loss caused by internal combustion, problems arise in resistance to internal combustion. Measures to suppress the transmission of engine vibration to the car body due to −15).

The present invention is an internal combustion engine which transmits vibrations in the middle of the vibration transmission path between the engine and the vehicle body by absorbing the vibrations transmitted through the vibration transmission path. (1) The objective is to provide a vibration absorption force d1 that produces a low vibration absorption effect.

This purpose, according to Kimitsuaki, involves installing an electrostrictive element in the middle of a vibration transmission path (), and applying a voltage to the electric cord that increases in synchronization with the cycle of vibration transmitted through the vibration transmission path. death,
-C is achieved by a vibration absorption method in which the displacement of the vibration is absorbed by the strain of the electrostrictive element.

According to the vibration absorption method according to the present invention, a voltage that changes in synchronization with the period of the vibration transmitted through the vibration transmission path is applied to the electrostrictive rope. In other words, the electrostrictive element vibrates with a phase difference of 180°, and the displacement of the vibration of the electrostrictive element and the vibration transmission path are displacement of vibration transmitted through,
are canceled out, and the displacement of the temple vibration transmitted through the vibration transmission path is absorbed.

The present invention will now be described in detail with reference to the above description.
(Explanation is based on 9T silk. Figure 1 is a view from the II side showing one embodiment of the vibration absorbing device used to carry out the first stage of vibration 11y and the method of the present invention. Vibration absorbing device 1001 ,
L 77 Ini Yu・] Two roots placed facing each other 4Δ1
A rectangular hη body of an electrostrictive system A3 made of a plurality of plates is placed between each of the two plates (j and J3), and the plate member '1. Bolt 1st and 5th J, S E with the scissor/υ
are connected to each other.

The electrostrictive elements (A) were each made (14) by 11 (11) and 411 (b) in the thickness direction of the plate (A).
The voltage of the direct current applied between the plate surfaces is 1・i
;; U) Increasing the fA thickness in the direction of; L will occur)
i2%tsu(iiii).

As clearly shown in Figure 2, chemical formula 1=-; :r
-: 3 is probed with the electrode plate G and 7 respectively by /υ,
- The 10,000-71A+ plate 6 is attached to one side of the stacked body of the electrostrictive element 3 with a C electrode 44 (conductively connected to each other by a connecting member 8,
7. : The electrode plate 7 of the curved track is Tri Ri' of the electrostrictive element 3.
The other side of i-body 1fll 1. ,X are connected to each other by the electrode connecting member 9 (,ljj,through 1)°',,continue,(both electrodes) 11! Between Yube Shrine 8.9, electricity 11- is marked 1111
As a result of the electrostrictive method, one child (21
．． 1. - j・1 (921 lill is applied to J, sea urchin Y). In addition, 1-52 figure (2h' is excluded, 10 indicates the electrical insulation part shrine, etc.).

J, octopus vibration absorption k P? 100 ha 4 part 44
'l Tof, I, on the side of the pair /j To the plan board member 2 /j
A piece of paper (C, l:
;This board part (11 and board member 2 are this drawing board part 41)
A vibration-proof rubber or rubber-like product is provided in between (connected to each other by Δ'12).

Root members 1 and '11 each have a hole (for L) and '13.1.
4 is said to be C. For example, the root member '1 is attached to the bolt 13 for the fq and the vibration source is the internal combustion 1, not shown! ,! Connected to the gate, the plate part w1'1 is connected to the gate l-'
l /1, J, is connected to the vehicle body (not shown), so that the internal combustion I interruption is caused by the vibration absorber VR, -l 0
Supported by Higashi Iho through 0.

Next, referring to the block shown in FIG. Eleven methods for controlling the applied voltage will be explained. This applied electric current i1
[In carrying out one method, a sinusoidal voltage generator 20 is used, which voltage generator 20 is given a crank angle signal by a crank angle Hinley 2'1 for detecting the crank angle of the internal combustion engine 11', I. In the case of an internal combustion engine, the signal is converted into a sine wave A with a frequency twice the engine rotational speed, and the sine wave (F) is converted into a bow. f
! ii 'A' Output to A22. Phase adjustment l1l) i
f pull 22 Ll, ? iJ- from J-Kou Seiki 20 in l
The phase of the string wave signal is in phase with the internal combustion (; 111) Later 11th string,
)1 sill'j '';ii Jli width gauge 23 t:
2, the amplified electric current is added to ζ3, and this causes each electrode plate 6 of the electrostrictive system J'33 to
．． A voltage is applied between 7 and 11: This electrical power changes in a sinusoidal manner, causing the laminate of the electrical iT5 to become distorted in the layer direction at -C (forcible internal combustion; Vibration and fJ
C vibration occurs with a phase difference of 180''.By photographing the laminated body of the cable 3, the engine vibration is canceled out, and (the interlayer lift is ilj body l\ conveyed (
- is avoided.

In addition, the phase adjustment of the sine wave (Uj month) by the phase adjuster 11iS unit 22 is performed using the internal combustion (/j? -('
i, 1. Section II! Since the phase of the 1 buzzing 1 hardly changes, it is only necessary to apply it to a predetermined candy first.

J, placed on the anti-vibration rubber 1, 12 is constant 1; the light is generated 1;
(Vibrations other than vibrations, for example, external vibrations), SuH,
Absorbs vibrations and eliminates mounting errors caused by internal combustion. Bis 1-n 1! Due to the reciprocating motion of the piston, etc., the force r: 1 (, J
It is shown by the following formula.

F I---nl I r O)'
(C(Is θ − 卜 I C2nC(Is
2 n θ ) n = 1 (1) n11: 1 [1 property of reciprocating members such as pistons 2
r: Viston force 1 - Roke ω: Angular speed of crankshaft 1 C: Toner coefficient In practice, t can be approximated by the following formula.

・・・・・・・・・(2) ・・・・・・・・・(3) 4:] Nequan blond length λ-4/r Internal combustion here (・, general 4ki υ;) (When considering a shallow concave, the first Jn (-th order 1('11!L /
J) It is 'C Saite) to return to the balance in Bannri of Ll Kunonku Gaya1).

However, the 21rj (secondary 1t''11) of equation 3) (, 1 each air 11; 1) are in phase, and the 4 air fiI internal combustion engine (, 2 acts as a forcing force [2 is 1 becomes 3°Here, the maximum load of the internal combustion engine body is +:l8LLmasho', -Mori 7, M; of the internal combustion engine?'
χ-shi ・・・・・・・・・(
5, which is a function of the number of rotations (,:, depends on f, constant ('
lIj:) Internal combustion (about ±60μ in shallow concave two-flange) 1
It is always 0. .

Vibration to the vehicle body caused by an internal combustion engine (within 10') 3W
I; Support 1 from the vehicle body through the suspension system.
'q-j 1') 1 to 1, the transmitted force Fo in this case
is an internal combustion (shallow concave primary 11."11'L force (two) [ ] round, which is used as follows: 1° Fo = K χ o S: 11 2 (1)
−−−(('+)1<: Pone constant χ0 of suspension system; Internal combustion 1 Relative amplitude with respect to the open vehicle body χ−χ1−χ2
・・・・・・・・・(7) χ1 ° Amplitude χ2 of the internal combustion engine; Amplitude χ2 (,1 of the vehicle body) can.

From 1st-1-1-, the power of transmission is il+ (according to Hohe), and both people's bodies are rs I; cough 1 river's relative'! , 2 i) n (some things are 19).

The Tatsujin absorption device F1100 has an amplitude of χi (,I!If I-i (vibrates with an amplitude of 30 μ), and from 2, χ0-χ1-χ2- becomes O,
The above-mentioned phase ・ ] strange () ”L is suddenly in, +'+if notation l
zidatsuryokut) becomes zero.

Figures 71 and 1 and 3 are each used for the vibration absorption b) law IA! Other embodiments of the dynamic absorption system are shown below (1).
C Figure 1 ・1 response part is 8noiΩ'S1 figure lI
J is shown in the same neck as the number 4.
In the embodiment shown in the figure, the drawing board part 4 is connected between the board parts 1 and 2.
2 is marked as a step number, and a stacked body of electronic elements 3 is embedded in the vibration-proof gonograph and postal column.

In the example shown in Fig. 5, JJ?17 strain system 1
The laminate of '3 is plate part + A 1, instead of 2 (4i (double J' + 'i S1), :Kil''/1 part month 15.1 (
30) ``I' is placed between 17 and l rl.''

In the embodiment shown in FIG.
Do 2 is connected to IP 4'1 in place of port 1---Nara 1--instead of C-wai-in-person/nort'19.

The 11 fruits shown in Figures 1 to 6 are 1! ! example(
, Ninohatesu, 7l-iii Ba., child 3) laminate (J
This is applied in the same way as the small embodiment shown in Figure '1.
G motion 1. lI (dynamic period (two synchronously changing electric currents 11-
By marking 1j11, each of the electronic elements a:
[causes ′ of said vibration! 41y) The effect of collecting 1 is increased by II +3.

In the above, the tree IN light is 1, and the example of I constant (1,
As explained in the above, the present invention is not limited to I3, but it is within the scope of the present invention that embodiments are possible within the scope of the present invention. )C Ming f5?T'
dsu・′)).

[Brief explanation of the drawing]

Fig. 1 LJ Kimitsuaki J, Ru & dynamic suction 11) (, 1, the vibration absorption 11"y shown in Figure '1, the lamination of the electrostrictive element of the device (111 structure
11Ji)' is an enlarged vertical ffJi plane view, FIG. Figures 4 to 6 are block diagrams showing an example of an electrostrictive element with dynamic absorption of 8 mm 1 and 1 applied voltage L1-control + 11 positions. A front view 'C shows an embodiment of the vibration absorbing device "9" used in the implementation of the absorption method. 1.2... Plate part (Δ, 3)... Electrostrictive element, 4...
bolt. 55...To node 1, 6.7...Electrode plate, 8, O.
... Electrode connecting member, '10... Electrical insulation part 4Δ, '1
1... Plate part 4C12... Anti-vibration post office, 13.14
...Torii" Pol h, 15, 1 (5...11・Tsubu Postal, 17.1ε3...Plane part, 19...Wa・i\・
Entering bell l-, 20...voltage light generator, 2'1...crank angle, 22...phase Kl! JI! Ij
Rii, 23...amplification ii! i, 100...1
H Modo 1B1 Front Rental 11-chome 8' (Applicant
1.] evening automatic service (・((, ceremony company agent
Patent Attorney Akira (Ei) Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] ? [7] A vibration 1z is set in the middle of the transmission path to reach the end of the strain, and a voltage that changes -C is applied to the electrostrictive neck R in synchronization with the period of the vibration transmission through the vibration transmission path. A vibration absorbing method characterized in that the displacement of the vibration is absorbed by the strain of a strain element.