JPS5850342A - Impact torque absorber - Google Patents

Abstract

PURPOSE:To absorb impact torque in an effective manner, by setting up a hermetically sealed chamber being full of fluid between two relatively rotatable rotary shafts and absorbing the relative angle displacement of these rotary shafts, while making up both shafts so as to link up with each other when said relative angle displacement is beyond the prescribed value. CONSTITUTION:A hermetically sealed chamber 6 being full of fluid is set up between the first rotary shaft 2 and the second rotary shaft 3 and divided into four small chambers 21, 22, 23, and 24 which are sectioned by vanes 13, 14, 17 and 18 and interconnected through flow passages 15, 16, 19 and 20 lying between respective vanes. And, when relative angle displacement happens between both rotary shafts 2 and 3, fluid moves at intervals between said small chambers 21-24 via flow passages 15 through 20 and if the relative angle displacement exceeds the prescribed value, these vanes 13, 18, 14 and 17 of both rotary shafts 2 and 3 are so made up that they are linked with each other and mechanically coupled together. With this constitution, all sizes of impact torque can be effectively absorbed without impairing the transmission efficiency of driving force.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an impact torque absorber that can absorb impact caused by sudden torque fluctuations without sacrificing efficiency. - Sudden torque fluctuations due to OFF or clutch engagement may impact mechanical parts and cause damage.
In order to avoid impairing ride comfort or producing scratching noise, it is possible to provide clutch discs with torsional characteristics with hysteresis, or to install fluid couplings in the middle of the power train to absorb impact torque. It has become widespread.

However, in the former case where the clutch disc has a torsional characteristic with hysteresis, the hysteresis is set according to the size of the impact torque in question, so it is not possible to absorb all sizes of impact torque. The problem is that it cannot be done. Unfortunately, the latter fluid coupling has the problem that slip occurs between the two shafts connected to the fluid coupling, impairing driving force transmission efficiency and deteriorating fuel efficiency.

This invention was made by focusing on these conventional problems, and proposes an impact l/lux absorber that effectively absorbs all magnitudes of impact torque without impairing the transmission efficiency of driving force. 1" (by doing so, the aim is to solve the above problems).

Hereinafter, this invention will be explained based on Drawing 1.
, 2 are diagrams showing a first embodiment of the present invention. ``Explain the composition without hesitation.'' (1) shows an impact l/lux absorber. (2) is a hollow first rotating shaft, and an example of this is the driving spider 1. (3) is the hollow 2nd rotation 1 pongee, and the 1st rotation! 11ηI+ +2) and 40a become, for example, driven 111[. First rotation axis (2) and second rotation 1
At the connection part with 咄(3), there is 1. It second rotation 1'l
llf2) and a flan/shaped member (11) (5) fixed to the second rotation 11QII (3) is provided 7'.

These flange-like members (4) and (5) are the second rotation 1 pongee (2
) and the second rotation i+qb (3) are relatively connected by zer clips (7) and (8) so as to define an annular sealed chamber (6) filled with viscous fluid weight or plastic fluid. They are rotatably connected, and the /-rule (10) maintains the liquid tightness of the sealed chamber (6). A centering hole (11) is formed in the center of the flange-shaped part (4), and the flange-shaped part A
(5) Provided at the center of li, centered I ~ 11q11+
+ 2) I received a total of November 11th. average 31 squares 11j1
On the sealed chamber (6) side of the 115 material (4), there is a curved Franz shape extending outward in the radial direction. The blades protruding in the direction of the section (5) are provided at intervals of 11j where 1. Path 1151il[i1 not formed.21j
,'l ltu, suke (3) ni old kera rL/Kofran/
On the side of the closed chamber (6) of the shaped member (5), there are blades (171 (+81 or 180 degrees apart) extending in the radial direction and extending in the direction of the other flan/shaped member (I). Set et al, tll,
Other francs/states? B (There is a small gap between g(4)
QIi! gforms the old l2fll. Feather +131
t141 (17H181 connects temporarily closed chamber (6) to flow path f151
tl fil(i 9)C! (Contacted by j) Komuro (
Niji n j, +21 f, 23] C1・1), and divide it into blades (13+ (14J) and blades (171 (181i
/i 1st rotation 'IQII (2) and 2nd rotation 1'llll
(3) 1(='s relative 1 incarnation is about 18 (1+c degree j
When it becomes a ship, it abuts and engages the first rotation 1, and the support (2) and the second rotation JII+ (3) rotate together.

Next, Ilj will be explained.

3.4.5 Figure 11 is a diagram explaining the operation of this embodiment. No.: Figure-1 Driving lQl+ (
from the first rotation 1IIIl(2)) to the driven 1lqlI(
The second rotating shaft (3)) shows the impact I in the tri-pink state (clockwise rotation in Figure 3) where torque is transmitted. In such a state, the blades 4131+111 fl 71 (18) directly abut and engage with each other, and l·lux is caused by the first rotating shaft (2) and the blades 131+1·+1. The blade (171 (181) is directly transmitted to the second rotating shaft (3). Figure 4 shows the 1st drive 111 (1st rotating shaft (2)) and the !drive as at constant speed. 4q
It shows a floating state in which no large torque is transmitted with II (second rotating shaft (3)), or a transient state when moving from constant speed to acceleration or deceleration. In this state, the first rotation +tql+ (2) and the second rotation axis (3)
There is a fluid between the first rotating shaft (2), the blade 031 fl =l+, the fluid, the blade (+7+ (+8
), it is transmitted to the second rotation 1 Tsumugi (3) or in the opposite direction. Figure 5 shows the driven state when decelerating or reversing! I
II (second rotation 1Iql13)) to the drive shaft (first
This figure shows a state in which the impact l·lux Absono<(1) occurs in a coasting state (the first rotation in the counterclockwise direction in FIG. 5) in which torque is transmitted to the rotating shaft (2).

In this condition, the blade (131(14+ (+71
(18ll members directly abut and engage, the torque is 2nd 111J, lll1ll (3), blade (17) (+8)
, the blade fl 3+ (141, transmitted to the first rotating shaft (52) and spreads.

Therefore, there is a disconnection of the clutch 2 notch, 0N-OI of the throttle, and ON-OF I of the tsuunil cut.
When a sudden torque fluctuation occurs due to a sudden change in torque, the impact torque absorber (1) changes between the states shown in Fig. 71.5, and the small chamber (211 (221 + 23) (24
) is the flow path 1 fil(It;l (19)+2
01 t Fi, it moves and converts the force V torque into heat energy due to fluid resistance and absorbs it. For sudden torque fluctuations, flow path t15)flilU! lh::U
) The speed of the fluid passing through becomes faster, creating a large fluid resistance, and in order to counteract the small fluid resistance against minute torque fluctuations, it is possible to Can absorb VC.

FIG. 6 is a diagram illustrating a second embodiment of the invention.

In this example, the small room (211(221(231(24+)
In the 70-ting state, the elastic body + 25) +; Pi 1i
)G! 7) (281 is arranged, and the blade t+ 3
1 (1, It (17+ (I)) 11 or bullet 4 body (2!it (2(it (27)C, +8) k
The elastic body (/:]lC2
[i1f'3ηF281 Prevents the sound of blades hitting each other from K1
1- And an elastic body that uses fluid as a spring! 251 ('
,! filf27) (281 is used as a mass damper to form a vibration system +j'N, and r is set to absorb vibrations at a specific frequency.
This is done to increase the anti-vibration effect by ζ tuning.

FIG. 7 is a diagram illustrating a thirteenth embodiment of the present invention. In this example, the small room (211 (221 (231 (24)
) (1,51t, Hi) OX) [
1) The cross-sectional area of the flow path is varied, and the first rotation +14
1+ (2) and the second rotating shaft (3), the flow resistance value generated in the flow path is changed to vary the damping force against the impact torque. In other words, the feather (
+3+it The resistance increases as the blade (171F+81) approaches the blade n31.
This is to reduce the impact force when (l 4) and the blade +171 (18+) collide.

As explained below, according to the present invention, as the structure of the impact torque absorber, the relatively rotatable 11th
A sealed chamber is provided between the i"11 rotating shaft and the second rotating shaft, and the flow 1
4ζ is filled, and when a relative angular displacement occurs between the first rotation axis and the second rotation axis, the fluid moves through the flow path, and the relative angular displacement between the first rotation axis and the second rotation axis occurs. When the tc exceeds a predetermined value, the first rotating shaft and the second rotating shaft are brought into abutting engagement and mechanically connected, so that there is no loss of driving force transmission efficiency and no deterioration of fuel efficiency. It can effectively absorb large impact torque, prevent noise and mechanical damage, and improve riding comfort.

That is, by installing the impact torque absorber according to the present invention in the middle of the power train of an automobile, it is possible to effectively absorb impact torque during sudden acceleration and deceleration. In particular, this impact torque absorber can be installed between the automobile transmission and the final reduction gear to avoid impact damage without impairing the transmission efficiency.・It can effectively absorb the torque and prevent the sound of the gears of the final reduction gear when driving at constant speed. Also, in addition to the double effect of the clutch and transmission music (1 here's the impact torque absorber), it can also prevent the transmission gear noise when driving at a constant speed.'!, Ta, Ennno If you install Luquabnova (this shock) between the clutch and the clutch, in addition to the double effect, you can also prevent gear rattling noise when idling.

[Brief explanation of the drawing]

Figure 1 shows 1. A sectional view of the impact torque absorber according to the first embodiment of the present invention, FIG.
3, 4 and 5 are sectional views showing the operation of this embodiment, FIG. 6 is a sectional view of an impact torque absorber according to a second embodiment of the present invention, and FIG. FIG. 3 is a new view of an impact torque amplifier according to a third embodiment of the present invention. (1)... Senjing torque absorber (2), first rotating shaft (3)... second rotating shaft (6)
... Sealed room +131F141 (1711181・
...Feather 1151 (I fil (191(20)・
...Flow path (2) 1 (221 ("3) (24+) ... Komuro (251 (2 [iJ (27) (281) ... Elastic body patent applicant Nissan Autotun Co., Ltd. interest agent Patent attorney Yuga Army - Part 1 Figure 2 Figure 7 Evening Figure JP-A-58-50342 (4) Figure 5 Figure 4 □・

Claims (2)

[Claims] (1) A connecting portion between a first rotating shaft and a second rotating shaft that can rotate relative to each other is provided with a seal 1 defined by these two shafts, a sealed chamber filled with fluid, and a joint between the first rotating shaft and the second rotating shaft. blades that are provided along the shaft to divide the sealed chamber into a plurality of small chambers that communicate with each other through a flow path, and that come into abutting engagement with each other when the relative rotation angle between the two shafts reaches a predetermined value; An impact torque absorber comprising: (2) The cross-sectional area of the flow path is made variable according to a change in the relative rotation angle between the first rotation shaft and the second rotation shaft. Impact torque absorber.