JPS5865341A - Shock absorber - Google Patents

Abstract

PURPOSE:To adjust damping force in a multiple stage further save excitation power, by fixedly providing specific two discs to an output shaft end of a rotary solenoid and end of an adjusting rod and engaging a pin and the like to grooves in the both discs. CONSTITUTION:In a shock absorber where an adjusting rod 16, for changing damping force, is rotated by a rotary solenoid 19, the first disc 24 is fixedly provided to the end of an output shaft 3 of the solenoid 19, while the second disc 25, located at a face-to-face position to the first disc 24, is fixedly provided to the end of the rod 16, and a single of pin (ball) 13 is engaged to a loop- shaped groove 12 of the disc 24, having at least four turn-back branch parts A-D, and a radially long groove 11 of the disc 25. In this way, a pulse current is conducted, if the disc 24 is rotated to an angle alpha in a direction R, the pin 13 is moved along a passageIfrom the branch part A to B, while the disc 25 is rotated to an angle beta and fixed, to cut off conduction of an electric current.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an upper hole shock absorber 79 so as to change the p-damping force using a rotary lenoid.

The shock absorber i4 of the vehicle has L as shown in Figure 1.
Rotary pulp lBt with castle and 7. An adjustment rod 16 is rotatably housed in a piston rod 15, and a plurality of orifices 17 of different diameters are formed at the tip of the adjustment rod 16. This vr
By rotating the rotary linenoid 19 fixed to the piston rod 15 and changing it into the orifice 17', one oil M is removed as the piston 20 is displaced.
The warehouse moving from 21 to the other oil amount 22? ! Knee knot,
& There are some that are designed to change the total wave force - 1 In other words, as the effective diameter of the orifice becomes larger, the damping force becomes stronger, and as the effective diameter becomes smaller, the damping force becomes stronger. Rotary lenoid 19' according to the condition
This is done to optimally control the reducing force.

The conventional rotary linoid used in such a shock 7 non-nover will be explained with reference to Fig. 8A.
3-5167). In the figure, 1 is case 2
3 is an output shaft which is supported for free rotation and sliding through a needle bearing 5t on the pace 4 of the coil I, 6 is a non-magnetic material 27i on the blade shaft 3. an armature that is fixed in place, the armature 6
and case.

A reasonable number of balls 8 (31- in the figure) are held between the balls 8 and 2. These balls 8 are formed on the upper surface of the case 2 and the lower surface of the armature 6, and form a ball race 9a that is inclined in the direction of the rotating surface of the armature 6 AK#.

It will be stored in 9b. Note that a winding coil S is installed between the output shaft 3 and the pace, and is biased to hold the output shaft 3 in the fixed position.

Therefore, coil 1 must be energized! ! At this point, the armature 6 is held in its original position by the biasing force of the spring SO acting on the output shaft 3, and the balls 8 are clamped at the front ends of the ball races 9a and 9b in the rotational direction LO, as shown in FIG. 1(C). 9 coos 2 and 7 machinia 6.
An axial clearance H is formed between the two.

When the coil 1 is energized, the case 1 is magnetized and pulls the armature 6, so the ball race 9b
Press and rotate, then move in the L direction. This causes the armature 6 to rotate and the ball 8 to gla? As shown in (d), pole race 9a? It stops at the position where it is held between the front end and the rear end of the ball race 9b, and its rotation is output through the output shaft 6. When the current to the coil 1 is cut off, the fi force of the case 2, tE As a result, the armature 6 simultaneously moves in the R direction due to the biasing force of the tin-wound spring S acting on the field 3 and returns to the original position.

However, the rotary pulp' formed by two orifices 1711 with such a rotary pulp lenoid 19
When the damping force 'Ik is adjusted in two stages, i[g1 and damping force 'Ik is strong and weak, either one of them is obtained by holding the rotorinoid in the 7 energized wire in the v wrinkle reduction force.

This means that the excitation current is continuously passed through the coil.
Because of this, the coil generates heat and the excitation power increases. In order to solve all this, a method has been proposed in which the aforementioned coil spring is removed and the rotor is changed to y7).

Addendums become complicated, leading to increased costs and complications.

On the other hand, the above-mentioned #CC direction force 194 is not limited to strong - 2 steps, but may require adjustment in 3 or 4 steps, but conventional rotary solenoids cannot meet this requirement. is impossible and rare.

The present invention has been made to solve the above-mentioned problem, and when a pulse excitation current is applied to the rotary linenoid only during the switching motion, the damping force is then mechanically engaged at the switching position and the damping force is multi-staged. - It is an object of the present invention to provide a shock absorber which can reduce excitation power by preventing coil heat generation and reducing excitation power.

Hereinafter, a financial example of the present invention will be explained.

In FIG. 3, a rotary solenoid 1912) arranged on the same axis as the hard rod 16 and mounted relative to the shock absorber 1912) has a frame on a part of the output shaft 3, jl14Dr.
(, *re24 is, , *is, and opposite it is the second r
The disk 25 is fixed to the end of the adjusted plate 160, and there is a clearance H between the disks as shown in 2 kIJ (c).
A slightly larger clearance H' is formed so that the two disks do not come into contact even if the armature descends during operation.

This II! A root-like groove 12 as shown in FIG. 4 is formed in the disk 24 of I/'X, and a long hole 11 in the radial direction as shown in FIG. 5 is formed in the second disk 25.

A turnback portion #fc@A-D of 44 tlA is formed on the loop-shaped monument 12.

These limbs @A-Dt-Branch sBt For example, remove 9j for the 6th N. Passage ■ is connected to passage IIM diagonally #iI at a point AI slightly before the starting point of passage H. ◇As a result, a circular object (not shown) in passage ■ is urged toward arrow #JJ1 direction. Otherwise, the object enters the path B and is stopped at the starting point Be. Then, if you force the object in the direction of the arrow,
After turning and packing from the starting point H, the object does not return to the path (2) at the end PJrAI, but instead stumbles over the path U'.

44 such turreback branch parts are installed in the "roof" shape @12, so when a circular object placed at the branch @A is biased alternately in the circumferential direction and in the direction R, the object becomes The circulation is repeated 10,000 times through the branch portions B, C-D-A~ and the loop soft wire 12'. % One pin (or gurl) 13 is held together, allowing movement along both monuments.

Next, the effect will be explained. When the armature of the rotary linenoid 19 is in the original position, the pin 13 is inserted into the short point of the branch part A of the loop-shaped groove 12 at the farthest position from the center of the second disk 25 within the length #1111. It is located at A'.

When the coil 1lC1/f is energized and the first disk 24 rotates by an angle α in the direction R, the pin 13 is locked in the circumferential direction by the groove 11, so it rotates along the loop-shaped ##120 passage l. It moves and is stopped at the starting point B of the limb B. When the power is cut off at this point, the disc 24 of the scolding 1 is connected to the output shaft 3.
One roll of gooseberry acting on the pin 13 rotates in the direction due to the biasing force of S, or moves along the passage country without returning to the pin 13 line passage summer, and is stopped at the starting point of branching part C, and because of C The second disk 25 is biased by a one-turn spring through the bottle 13 and is rotated from the IJA position to the T position at an angle β and held at that position. Next, when the coil 1 is energized with one pulse, the pin 13 moves along the path (1) from the concave path to the branch part in the same manner as described above, and returns to the original position at the branch 5AcD.

In this way, by applying one nodal angle a'#IL to the coil 1, the second disk 25 is rotated through the pin 6 from the angle β rotation position llc to the original position, and the second disk 25 is rotated to the original position. The rotary pulp 18c/) orifice 17 is changed by the rotation thereof.

FIG. 7 shows a loop-shaped neighbor 12 according to another embodiment of the present invention, with turn-puncture branches iA to H and 81 (b), 'F
fr, and the second disk 25 is in the original position at an angle β1~
β3 It was held at the rotational position 4, and correspondingly a 41M orifice was provided in the rotary pulp 18, and the shock absorber's tension reduction force was set in 4 stages. 〇For this reason, branch parts C, E,
The GO position is set to be shifted by KJk degrees so that it becomes a predetermined rotation angle, and the branch part F is set to shift the GO position until it reaches the angle α.

H sound is formed, which causes minute M parts e, h, and G in order.

The pin 13 is locked and the rotation angle is braked in stages.

That’s 8! As explained above, according to the present invention, the 141 disk is fixed to the output shaft of the rotary linenoid, and the I! On the mutually opposing surfaces of the two disks, adjacent loops and radial lengths are formed, and these adjacent sides are engaged with pins or mails, so that a pulse excitation current can be applied only at the time of switching. F, the rotary linenoid can be switched and held at the t2 position, and the shock absorber OMG force is at least 2
This has the effect of preventing heat generation in the lenoid coil and saving excitation power.

[Brief explanation of drawings]

FIG. 1 shows a conventional shock absorber 4 of this type.
l11 plane IN, m2 figure shows a conventional p-talinlenoid, figure (a) is a perspective view which is a cross-sectional view, -'' figure (
b) is a top view, Figure 1KrJ (CJ is a diagram showing the behavior of the goal race when it is not activated, Figure (d) is an explanatory diagram of the behavior of the ball race when it is activated, and Figure 3 is a diagram showing the behavior of the ball race when it is activated. The side view shown in Fig. 4 is the 1-1 missing section view in Fig. 3, and Fig. 5 is the
FIG. 3 is a sectional view taken along the line nn in FIG. 3, FIG. 6 is an enlarged explanatory view of a turnback branch, and FIG. 7 is a plan view showing a loop-shaped St of another embodiment of the present invention. 1... Coil, 3... Output shaft, 6... Armature, 11... Long groove, 12... Loop groove, 13...
・Pin or ball, 16...=X rod, 17...
・Orifice, 18...Rotary pulp, 24...
ml(7)y'isk, 25...second disk. Patent applicant Senba Kogyo Co., Ltd. Figure 1 Figure 7 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] A rod that passes through the piston rod and an orifice whose area changes as the rod rotates. In shock absorbers that change the damping force by rotating the rod, the coil A first disk formed in a Luzo-like shape having at least four turn-pack branches s't- is fixed to the output shaft end of a rotary linenoid whose output shaft rotates by a predetermined angle when energized. , a second disk formed with a long line in the radial direction is fixed to the end of the rod opposite to the second disk, and a pin or a nail is fitted next to both disks. shock absorber.