JPS60139936A - Damping force regulation hydraulic shock absorber - Google Patents

Abstract

PURPOSE:To regulate damping force quickly and accurately by providing a pressure generating mechanism producing fluid pressure for functioning a rack pinion mechanism arranged on top of hydraulic shock absorber to rotate a regulating rod. CONSTITUTION:Upon operation of regulating knob arranged in the cabin to produce high pressure oil through pressure generating mechanism (not shown), the high pressure oil will function through a pipe 31 onto the base of a rack 27 in rack/pinion mechanism to advance it. Consequently, the pinion gear 25 is rotated to rotate a valve 8 in damping force regulating means through a regulating rod 6 mounting said gear 25 thus to vary the opening area of orifice. As a result, communication between upper and lower oil chambers partitioned by the piston 2 of hydraulic shock absorber is varied to regulate the damping force.

Description

[Detailed description of the invention] (3rd Sada) The present invention relates to an improvement in a damping force planner type hydraulic shock absorber.

In hydraulic shock absorbers used in motorcycles, damping force characteristics can be arbitrarily adjusted depending on road surface conditions, rider preference, and the like. For this purpose, the adjustment rod is inserted concentrically into the piston rod (17), the lower end of the adjustment rod is exposed to the damping force generator tank of the piston, and the upper end of the adjustment rod is rotated from the outside to provide damping. There is something that has been done so that the force can be adjusted. There are many ways to operate the rotation, but an electric drive method using a solenoid or a motor, or a pinion gear fixed to the upper end of the adjustment rod, and a rack that fits into the pinion can be used. Generally, methods that allow people to retire are well known. However, the former consumes a relatively large amount of power, which places a burden on the vehicle's battery and engine, which can lead to malfunctions due to noise interference and reduced reliability depending on usage conditions.
A controller such as an angle setting device is required to set the rotation angle, and the structure of the GO-13993G (2) tends to become complicated. Although the latter has a simple structure, it is difficult to set the rotation angle in one stroke of the rack due to the number of gear-type ratchets.

This invention proposes a damping force adjustment type hydraulic shock absorber made in view of the above points, and includes a main body of the hydraulic shock absorber, a connecting member fixed coaxially to the upper end of the adjusting rod, and an upper surface of the connecting member. A one-ion gear is coaxially and rotatably provided on the piston rod, and the pinion gear meshes with the pinion gear and is slidably provided in a housing fixed to the upper end of the piston rod, and is moved forward in seconds by external pressure. Then, the rack is urged in the opposite direction by the return spring and retreats, and the connecting member and pinion gear are integrated and separated by magnetic force.
The gist is that it is composed of a ratchet mechanism that rotates the connecting member by a predetermined angle with one stroke of the rack, and a pressure generating mechanism that is connected via the proximal arm of the rack.

An embodiment of the present invention will be described below with reference to the accompanying drawings.

(No. 5).

FIG. 1 is a partially longitudinal front view showing the main body of the hydraulic shock absorber.
(1) is a cylinder filled with oil, (2) is a piston that is slidably fitted into the cylinder (1), and the piston (2) has an oil hole (3)! , along with the establishment of
A disc/double rub (4,) is provided on its upper surface. The piston rod (5) that supports the piston (2) has a tubular shape, has an oil hole (6) on its side surface, and has an opening at the lower end. It communicates with the armpit chamber through an oil passage (7).

4 valves (8) are fitted in the cough valve indoor IC, and the core valve (8) is inserted into the lower end of the Meiheirotsu P (9) which is rotatably inserted into the piston rod r5). ) are connected in a non-rotatable manner. Further, when the lower end of the valve chamber is closed, an oil hole OI is eccentrically bored therebetween. Figure 8 shows a cross-sectional view of Figure 1.
A plurality of orifices of different sizes a1) fil Q 64) fi at equal intervals in one direction of the 5x1 pulp (8)
l (11 is drilled and the cough orifice is tilted and the oil hole (
1e is in a state of communication. During the compression stroke of the secondary lever shock absorber, the valve (4) opens and the (6th valve) hydraulic oil in the lower oil chamber flows through the oil hole (3) to the upper oil chamber. A relatively small damping force can be obtained. Also, during the extension stroke, the hydraulic oil in the upper oil chamber flows through the oil hole (6), oil path (7), and orifice 0.
e1, the oil flows sequentially through the 7 LOI and into the lower oil chamber, thereby generating a damping force, so by rotating the adjustment rod (9), the size of the orifice facing the oil hole 6I can be changed. In this embodiment, the damping force adjustment in the extension stroke has been explained, but it is of course possible to adjust the damping force in the compression stroke.

In the above-mentioned hydraulic shock absorber body, Pistonron.

There is a burr catcher 6η on the upper end of the door (5) and a nozzle 0
A support frame holder and a nut (a) for fixing the cylinder are sequentially fitted onto the outside, and the vehicle body is placed between the spring holder n7) and the spring holder (not shown) provided on the outer periphery of the cylinder (1). A suspension spring (41) is stretched. Its lower end is fixedly supported by the upper end of the housing fllR piston rod (5), and the attachment arm (21) is supported via a fixed screw. Frame (lf JK is fastened. Note that (c) is a mounting bracket, whose lower end outer circumferential side is supported and fixed with a support frame member (page 7), and whose lower end outer circumferential side is supported and fixed with a nut (a). The upper part of the cylinder (1) is attached to the electric body side, and the lower end of the cylinder (1) is supported by an axle.

The above-mentioned housing (the national capital is shown enlarged in Fig. 2, and Fig. 3 shows a sectional view taken along line B-B in Fig. 2). (a), and the connecting member (two pinion gears (two pinion gears and a permanent magnet (a) are fitted on the top surface of the central shaft rotatably fitted on the top surface of the connecting member 24). (2
41 has the lower end of its central axis coaxially fixed to the upper end of the -J4 straightening rod (9). The above-mentioned binion gear +25+ includes a rack that is slidably provided in the howling gear and is configured to move forward by external pressure and move backward by being biased in the opposite direction by return spring C(1). (5
) are engaged. The above permanent magnet (A) is equipped with a rotating IE bolt (2 barrels) inserted from the outer wall of the housing 0 barrel. Note that Q is an O-ring, (to) is a positioning hole, and (31) is a rack. 127), which introduces external pressure to the base end of the housing (127), and is attached to the housing (1 mallet) via a flange. Fig. 4 shows an example of the rack and pinion mechanism configured as described above. It is an exploded perspective view to show the ratchet mechanism provided in the pinion gear +251VC hole (inside the magnetic material bottle 0
At the same time, a plurality of holes (34) 13 3f are fitted at equal intervals in the circumferential direction of the top surface of the connecting member f24). lI'3η+
31 Ql is installed. FIG. 5 is a plan view showing each member in FIG. 4, and FIGS. 6 and 7 show the ratchet 11 &
This is a tax that indicates the operating status of the structure, and the opening of the park. Figure 5 Death and 8th
Figure 1 (as shown, permanent magnet (a), -ion gear (25
1, the connection member/74) and the pulp (8) are respectively positioned, and the operation of this anti-aggressive force patrol device will be explained below.

The pin (G) fitted into the hole (32) of the pinion gear (C) has eight poles at its upper end, and because it faces the S pole side of the permanent magnet θe, a repulsive force is generated, and the sixth As shown in the figure, the lower end of the bottle t31 fits into the hole of the connecting member e24). Therefore, if the external pressure introduced from the pipe 13+ acts on the proximal end of the rack (5) in the direction of the arrow, the rack (27) moves forward, causing the pinion gear Q9 and the pinion gear (2) to The connecting member C241, which is integrated through the third floor, rotates counterclockwise.When it rotates 6 (), the bottle (to) faces the N pole side of the permanent magnet (9th), so it is attracted. A force is generated and the lower end of the bottle C3S separates from the hole (B) of the connecting member (24), as shown in Fig. 7. Therefore, when the external pressure is removed, the spring reaction force of the return spring (A) The rack ((5) moves back, and the pinion gear rotates 60 degrees clockwise and returns to its original position. With this, one stroke of the rack is completed, but the connecting member rotates counterclockwise. Since the ship is rotated 9 degrees, the connecting member (2) and adjustment rod (9)
) The integrated pulp (8) is also rotated by 60°,
The orifice 01 instead of the orifice itself is communicated with the oil hole OI. Bin n′ when advancing the next ruck penalty! The lower end of J fits into the large chrysanthemum of the connecting member (2) and acts in the same manner as described above to convert the orifice of the pulp C81. As above,
Pulp (8) 6 in one stroke of rack (5)
Since any orifice can be selected by rotating in 0° increments, good damping force adjustment can be performed. In this example, the rotation angle in one stroke of the rack @ was set to the mark degree, but depending on the conditions such as the number of orifices provided in the pulp, an angle that can be equally divided, such as sho,
120@, 1806, etc. (page 1O).The magnetic pole of the permanent magnet may be selected according to the setting angle, and instead of a permanent magnet pole divided into two, a predetermined non-magnetic disk (1) may be used. Permanent magnet (tube) with N and S poles at each location,
(26'') can also be buried. (See Figure 5a) The helmet, of course, the housing (11° connecting member H)
, pinion gear: 2e etc. are made of non-magnetic material that does not affect the above operation.

FIG. 9 is a longitudinal sectional front view showing the oil 1:E generation mechanism, FIG. 10 is a sectional view taken along line CC in FIG. 9, and FIG. 11 is a sectional view taken along line DD in FIG. 9. (411 is a case filled with hydraulic oil inside, and the core case (a piston (42t) that moves once within 4υ
(The upper end of 4'lJ is made to protrude from the case (4υ),
And cough piston (C7J 143 oil chamber (4:H)
ll respectively. The nuclear oil chamber (43+43 is connected to the other end of each hydraulic shock absorber installed on the rear side or front p).On the other hand, (44 is an adjustment There are four knobs fixed to the vehicle interior or the handle part (C), one rotatable knob (40 coaxial with the machine), and a plurality of knobs (40) each on the surface facing the base (40). A conical groove (a groove is bored and a pole t41 is fitted into it. Also, (page 11) the above piston (43 (a play that comes into contact with the upper end of 46)
(End group in the center of 49, end C in the center of knob t4t9
511 are fixed to each other and connected by six wires.

Therefore, by rotating )p+4fQ, the ball (48) leaves the circle*, m+4n of the knob (46) and rides on the flat surface, so the knob+41st pupil moves in the direction of the arrow in the figure, and the wire The plate f41 is pulled down in the same direction with the information 1~.However, the piston 121 (43
lowers and pressurizes the oil chamber (11,1 (4,1).

For this purpose, the proximal end of the rack (5) is pressed and moved forward through the Takada Oil (fE) quantity tube 131). rack('
As y'h moves forward, the loop (8) rotates, and Oriais is transmuted and the @ position is changed, then the knob (401) is rotated and returned to its older brother state.Then, the wire (52 is loose, the piston (a'2h (43 is urged upward by the return spring and returns to the original position, so the hydraulic pressure acting on the base end of the rack (ura) is removed and the rack (5) In the figure, (b) is a mounting member that is fixed to the vehicle body with a fixing bolt, and (to) is a tank installed next to the case (AD), and Prada uses the inside of it as an oil chamber. 5?) and the air chamber (to).Then, the oil chamber 143 and the JP-A-13993G (4) in the mother Iso 0υ are separated into the oil chamber 6η. At the same time, when the piston (4) descends and returns to its original position, the oil chamber (4'3) may be in the negative pressure state 1, and at that time, oil flows out from the oil chamber 6η. Hydraulic oil flows into the oil chamber (43) through the hole 1R (II), which prevents flow in only one direction, and serves to compensate for differential pressure.

Fig. 12 is a condensed version of Fig. 9, in which the howling 13, the support plate and the knob I4 are connected to a support tube (to a ) and the return spring interposed between them, and by rotating the knob j64), the ball leaves the conical groove of the knob Fi4) and rides on the flat surface, and then moves upward as shown by the imaginary line in the figure. is configured to move to. As the core ball moves upward, the piston (61) slidably fitted in the howling 163 is pushed upward, and the oil chamber σ formed above it is pushed up.
Pressure is applied to the proximal end of the rack (5) via the arm (not shown). When the knob is turned nine more times to return to its original state, the spring reaction force of the return spring ff1l causes the piston (page 13) 1 to descend and return to its original position.

Fig. 13 shows another example of the pressure generation mechanism, in which a non-plate ff4 that abuts the upper end of the piston sliding inside the cylinder σa is connected to a switch (c) installed inside the vehicle gate. It is configured to be able to be raised and lowered by a solenoid σe which is operated by the operator, pressurizes the oil chamber in the core cylinder σ2, and sends high pressure oil to the front YI4 Eve C(1) side f.

FIG. 14 shows another embodiment of the pressure generation mechanism, which includes the Nakinimulator connected to the above-mentioned old Eve G1) and the accumulator ff? ) The compressor σ field that connects K, the solenoid pulp σ wound that opens and closes the flow path in the same mother eve aD, the ♂ branch or iso that connects the inside of the arm eve c31 to the atmosphere... and the cough branch A iso wire. This shows a pneumatic pressure generating device consisting of a solenoid pulp @9 that opens and closes the internal flow path, and a switch (2) installed in the vehicle interior that operates both paddle and paddle valves. When the switch is turned on, the solenoid pulp (to) opens, and the '4 solenoid pulp to closes.
/Izo01) and is sent to each Ratsu)@ side.

(Page 14) When the switch (to) is turned off, the valve i71 is closed and the pulp (81) is opened, and the air sent to each rack (2?) side passes through the inlet at the arm of the branch and enters the atmosphere. released to.

When the pressure in the accumulator ση falls below a predetermined level, a pressure sensor activates the compressor ffl, which always maintains the pressure at which each rack ((5) can operate).

According to the present invention, as described above, a pressure generating mechanism is provided and the rack-nion mechanism provided at the head of the hydraulic shock absorber body is actuated by a hydraulic bottle or pneumatic pressure to rotate the adjustment rod using hydrocyanic acid. Moreover, it has a ratchet mechanism that makes it easy to set the rotation angle in the first stroke of the screw, and the ratchet mechanism uses magnetic force between magnets, so the damping force can be adjusted quickly and It has many benefits, such as being accurate, easy to use, easy to carry, and has excellent water resistance. □

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of the present invention. Front view, Figure 2 is an enlarged view of the main part of Figure 1, Figure 3 is B- of Figure 2.
BM view, Figure 4 is an exploded view showing the main parts in Figure 1 (No. 15), Figure 5 is a plan view showing each member in Figure 4, Figure 5a is a A plan view of another example of the permanent magnet part, Figures 6 and 7 are explanatory diagrams showing the operating states of the four structures, Figure 8 is a sectional view of Figure 1,
FIG. 9 is a longitudinal sectional front view showing an embodiment of the pressure generating mechanism connected to the one shown in FIG. 1, FIG. 12, 13 and 14 are longitudinal sectional front views or explanatory views showing another embodiment of the pressure generating mechanism. DESCRIPTION OF SYMBOLS 1... Cylinder, 2... Piston, 5... Piston rod, 8... Valve, 9... Adjustment rod, 18
...Housing, of course...Connecting member, 5...Binion gear, February...Permanent magnet, Gal...Rack, 31.
... Mother Eve, η ... Pin, 41 ... Case, 42
...Piston, 43...Oil chamber, 44...AtM
Knob for s, 15... Base, 46... Knob, 47.
... Circular groove, 48... Ball, 77... Accumulator, 78... Compressor, 79.81...
・Solenoid pulp, a... branching amount Eve, 82...
·switch. Invitation 12 Figure 141ffi 8

Claims (1)

[Scope of Claims] 1. A hydraulic shock absorber body whose damping force is adjusted by the rotation of a '04 adjusting rod fitted into the piston rod, and a connecting member coaxially fixed to the upper end of the adjusting rod. a pinion gear coaxially and rotatably provided on the upper surface of the connecting member; , a rack that advances by external pressure and retreats by a return spring, a ratchet mechanism that integrates the connecting member and pinion gear by magnetic force and rotates the connecting member at a predetermined angle by the two, and the base of the rack. A damping force adjustable hydraulic shock absorber consisting of a pressure generating mechanism connected to the end via a Tsuquib. 2 The pressure generating mechanism is filled with oil and
The patent claim is characterized in that a piston is provided that enters by a switch of an adjustment knob or a knob (page 2) installed in the vehicle interior, and the mother tube is connected to an oil chamber in the case. A damping force adjustable hydraulic shock absorber as described in Scope 1. 3. The adjustment knob has a plurality of conical grooves formed in each of the opposing surfaces of a base fixed in the vehicle interior and a knob coaxially and rotatably provided with the core base, into which balls are inserted. The damping force adjustable hydraulic shock absorber according to claim 1, characterized in that the knob position is displaced in the axial direction by rotation of the core. 4. The front force generation mechanism consists of the accuerator connected to the above /4' Eve 1, the compressor connected to the core accumulator, the solenoid/globe that opens and closes the flow path in the same Eve, and the same A ? The invention is characterized in that it is composed of an external wave arm valve that communicates the inside of the valve with the atmosphere, a solenoid (pulp) that opens and closes the flow path in the main valve, and a switch that operates both valves. A damping force adjustable hydraulic shock absorber as described in Scope 1.゛