JPS59179440A - Braking device for motorcycle with sidecar - Google Patents

Abstract

PURPOSE:To make better the steering stability of a motorcycle with sidecar during its running, by controlling the braking force given to this machine according to the number of people aboard at the sidecar side with a pressure control valve gear. CONSTITUTION:A PCV gear 3 for pressure control is installed in the point midway in a hydraulic circuit which transmits hydraulic pressure to each of hydraulic disc brake calipers C1 and C2 in a rear wheel 1R of this machine 1 and a side wheel 2S of a sidecar 2 via a master cylinder 5 by stepping on a rear brake pedal 4. And, braking deceleration G2 in time of the sidecar 2 being empty is set to the same speed as braking deceleration G1 of this machine 1, and simultaneously when an occupant is in the sidecar 2, the PCV gear 3 is controlled according to the number of the occupants whereby the braking deceleration G1 in relation to this machine 1 can be reduced. With this constitution, since the braking deceleration G1 of this machine 1 is reduced in proportion to a reduction in the braking deceleration G2 of the sidecar 2 on the basis of weight increment due to boarding of people into the sidecar 2, thus stable steering is secured.

Description

[Detailed Description of the Invention] In the present invention, the braking system for a two-wheeled vehicle with a sidecar is linked with the sidecar brake on the sidecar side, but the braking forces of the main unit side and the sidecar side maintain the balance of the entire vehicle body. It is hoped that this will work in a similar manner. In other words, since the weight balance of the vehicle body changes depending on the presence or absence of a passenger in the sidecar, there is a need for a braking device that can generate an appropriate braking force despite such changes in weight balance.

Therefore, the present invention has been made in view of the above-mentioned circumstances, and provides a braking device for a two-wheeled vehicle with a sidecar that further improves steering stability while driving by controlling braking force distribution according to the presence or absence of an occupant on the sidecar side. is intended to provide.

In order to achieve this objective, the braking device according to the present invention incorporates a power control valve (hereinafter abbreviated as PCv), which is a pressure reducing means, in the hydraulic pressure supply system to the hydraulic brake device on the machine side to control the braking pressure. This allows for control.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. Figure 1 schematically shows a two-wheeled vehicle with a sidecar, and shows the relationship between the braking torques FR and Fs acting on the rear wheel 1R of the two-wheeled vehicle and the wheels 2s of the sidecar 2 and the braking deceleration acting on the entire vehicle body. There is. According to this, the braking deceleration corresponding to the rear wheel 1 and the side wheel 2s is determined by the braking torque FR (KQ), Fs (Kg), and weight distribution WR.

Ws (K(1/I112)) is expressed as FR/WR, FS piston valve Ws, and that of the rear wheel on the machine side is 01
And if the sidecar side is G2, then G1<G2<
Handling directions according to the relationships Gl = G2 and Gl > G2 are indicated by arrows A, 'B, and CF in the figure. Here, it is clear that it is desirable to set GI=G2 from the viewpoint of improving maneuverability, but since the weight distribution Ws applied to the side wheels 2S varies greatly depending on the presence or absence of occupants in the sidecar 2, it is always Gl=G2. It is difficult to maintain such a relationship.

Therefore, in the braking device according to the present invention, as shown in FIG.
Hydraulic disc brake caliper C for each of the side wheels 2s
+, A PCv device 3 for pressure control is installed in the middle of a hydraulic circuit that transmits hydraulic pressure to C2. As a result, the braking deceleration G2 when sidecar 2 is empty is set to be the same as that in Ia1, and when there is a passenger in sidecar 2, P
By operating the CV device 3 manually or automatically to adjust the supplied hydraulic pressure and reducing the braking deceleration G1 to the main machine 2, the weight distribution Ws due to the occupants boarding the sidecar 2 is adjusted.
This corresponds to a decrease in braking deceleration G2 based on an increase in G2.

Therefore, in the graph of Fig. 3, the master cylinder 5
The solid line P shows the proportional relationship between the oil pressure PM <KQ/cm2) supplied to the caliper and the oil pressure Pc (K(]/am') supplied to the caliper.By the operation of the caliper C1, the PCV
The braking force G1 applied to the rear wheel 1R without pressure reduction by the device 3 is shown by the solid line R, and the braking force G with pressure reduction is shown by the solid line R.
1 is indicated by a two-dot chain line S. The braking force G2 applied to the side wheel 2s by the operation of the caliper C2 when no occupant is present is shown by a solid line R, and the braking force G 2 ′ when an occupant is present is indicated by a solid line T.

As is clear from the graph, when the oil pressure PM of the master cylinder 5 reaches Pmo, the oil pressure supplied to the calipers C+ and C2 is both expressed as Pc=Pco, assuming no pressure reduction by the PcV device 3. Caliper CI, C
The braking decelerations given by 2 are GIG and G20, respectively.
It is expressed as

On the other hand, when a passenger is boarded on the sidecar 2 side, the braking deceleration of the sidecar 2 changes as the weight distribution increases.
This allows the braking deceleration on both sides to be adjusted. In other words, Kirelipa C+, C2 when pressure is reduced by the PCV device 3.
Both oil pressures supplied to the caliper are shown as Pc=Pc+, and the caliper C+ at this time.

The braking deceleration applied by C2 is Go respectively.

G21 (both are indicated by double-dashed lines in the figure). Ultimately, what the above means is that the pressure is reduced by the PcV device 3, causing an operation delay D in the braking force on the side car 1 side, and This is nothing but synchronization with braking deceleration.

Next, FIG. 4 is a graph based on actual examples.

Assume that a depression input of 20 to 9 is applied to the rear brake pedal 4. Master cylinder 5 hydraulic pressure PM
(KQ /Cm') is 49Ka/am', and the rear wheel braking torque FR (KQ) of this machine 1 is 234Kg. In addition, the rear wheel weight distribution of this machine 1 is WR (Kg/I112
), then WR=241K(l, so the braking deceleration G1 becomes Gl =FR/WR=234!II/241K(]=
It becomes 0.97. On the other hand, the braking torque Fs of sidecar 2
is 113! It is calculated as +. In addition, the weight distribution Ws is Ws + = 130K (1 when a passenger is on board, Wso = 9 when empty)
It is 0 kg. Therefore, the braking deceleration of Sidecar 2 is G? a-o=113Kg/130K (1=0.87 (
G2+-+ = 113KO/90K (1 = 1.26 (when empty) By controlling and approximating the resulting numerical differences each time through the operation of PC device 3, this machine 1
This is to adjust the effectiveness of the braking force on the side.

Next, a PC that enables decompression control as described above.
An example structure of the V device 3 will be explained with reference to FIG. A hydraulic cylinder chamber 31a is bored inside the main body housing 31, and an inflow passage 31b into which the hydraulic oil from the master cylinder 5 flows and the caliper C+ are connected to the cylinder chamber 31a.
, C2 are provided with hydraulic oil outflow passages 31c and 31d, respectively. Further, a piston valve 32 is fitted in the cylinder 1a in an oil-tight manner by seal members 33, 33, and is capable of reciprocating movement. An oil passage 32a is bored in the piston valve 32 and communicates with the hydraulic oil inflow passage 31b. The outlet of the oil passage 32a on the left side in the figure is closed by the spherical valve body 34 by the urging force of a spring 35.

Further, an adjustment push screw 36 for reciprocating the piston valve 32 is fixed to the rear of the piston valve 32 as shown in the figure. When rotated,
When the piston valve 32 moves in cooperation with this and the biasing force against the spherical valve body 34 changes, the reduced pressure changes due to the pressure regulating valve structure formed by the valve body 34. In the figure, 36a is a head nut for the set screw 36, 38 is a bracket for supporting and fixing the stopper 37 from the outside, and 39 is a set screw thereof.

By the way, although the above structure shows a structure in which the piston valve 32 is moved by a push screw 36, that is, a structure in which it is operated manually, it is possible to replace the related members including the push screw 36 with automated members. Of course, it is also possible to configure the system to reduce the pressure based on the output signal of the detection means for detecting the presence or absence of a sidecar side passenger.

In addition, in FIG.
This schematically shows a two-wheeled vehicle equipped with a single-idle vehicle mounted in appropriate places around a.

To operate the PCV device 3 having such a structure, when the adjustment push screw 36 is rotated each time the sidecar 2 is empty and when the sidecar 2 is boarded, the piston valve 32 cooperates with the rotation of the hydraulic cylinder W31a. For example, if the valve is moved to the left in the figure and the spherical valve body 34, which is blocking the outlet of the oil passage 3'2a by the urging force of the spring 35, is further pressed while resisting the elastic force of the spring 35, the valve is closed. The body 34 will more strongly block the outlet of the oil passage 32a.

Then, the hydraulic oil that has been pressure-fed from the master cylinder 5 at a predetermined pressure passes through the inflow path 31b and the oil path 32a of the piston valve 32, and flows to the outflow path 31d while pushing away the valve body 34 that is blocking the outlet. Further, a restraining force is added to the state in which the hydraulic fluid has been led out, and the hydraulic fluid must overcome the closing force of the valve body 34 and be led out to the outflow path 31c.

In this way, the hydraulic oil flows between the inflow path 31b and the caliper C2.
The pressure is the same in the outflow path 31d to the caliper C.
The oil pressure is different in the outflow path 3]C to the machine 1, so the braking force by the caliper C2 on the side car 2 is controlled in response to the braking force transmitted from the outflow path 31c to the caliper C1 on the machine 1 side. This makes it possible to approximate as much as possible and adjust the braking deceleration to suit the driving conditions.

Therefore, as described above, in the embodiment of the present invention, the braking force applied to the machine can be controlled by the PCV device according to the number of occupants on the sidecar side during running, so running stability performance such as handling is greatly improved. It has a coercive effect.
Ru.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the state in which braking deceleration of a two-wheeled vehicle with a sidecar acts in the steering direction, Fig. 2 is a schematic diagram of the hydraulic oil flow path when the PCv device is assembled, and Fig. Figure 4 is a graph showing the relationship between braking deceleration and oil pressure, Figure 5 (Δ)
, (B) is a detailed cross-sectional view of the PCV device and its plan view, No. 6
- The figure is a partial plan view of a two-wheeled vehicle with a sidecar equipped with a PCV device. Explanation of symbols for main parts 1... Motorcycle 2... Sidecar 3... PCV device 4... Rear brake pedal 5... Rear master cylinder 31...Body housing 31a...Hydraulic cylinder chamber 31b...Hydraulic oil inflow path 31c...Hydraulic oil outflow path to the machine side caliper 3
1d... Hydraulic oil outflow path to lead car side caliper 32... Piston valve 36... Adjustment push screw Applicant Honda Motor Co., Ltd. Agent Patent attorney Motohiko Fujimura Figure 1 G+=Gz Figure 2 Figure 3 0 Figure 4 Kotsuni → Shi111 Figure 5 (A) Figure 5 (B) 1. Display of the incident 1982 Patent Application No. 054718 2. Invention Name: Braking device for two-wheeled vehicles with sidecars 3; Relationship with the amended case Applicant address: 6-27-8 Jingumae, Shibuya-ku, Tokyo
Name <532> Honda Motor Co., Ltd. 4, Agent 104 Address Kyodo Building (Ginza 3-chome), 3-10-9 Ginza, Chuo-ku, Tokyo Phone: 543-7369 Name (79)
11) Patent attorney Motohiko Fujimura 5, “On the day of the amendment order” Voluntary action 6, subject of amendment Akira ■! [Detailed Description of the Invention J]
The column, Drawing 7, and Contents of Amendment A: Detailed Description of the Invention column are amended as follows. (1) Change the word “power” on page 3, line 4 to “pressure” (2) “)” on page 3, line 4 to line 5: S Bis G2J
To rG+ ・guG2, Gt =G2 J, (
4) On page 4, line 5, replace “For this machine 2” with “for machine 1.” (5> On page 3, line 4, “braking force G+ (6) On page 4, lines 17 to 18, the phrase "braking force G2 is indicated by a solid line R" was replaced with "the braking force G2 is indicated by a solid line R" to "the braking force G2 is also indicated by a solid line R."(7> Page 3, line 4, 1 - braking force G2J and a) to ``braking force!+24, (8) Page 4, line 2o, 1,'' and [master cylinder 5” [If there is no passenger boarding on the sidecar 2 side,
Add ゛. <9> Replace rPmoJ and the name of the 1st line of page 5 with “Pm”
(10) On page 5, line 5, "Deceleration is each GIG. G 20" is changed to "Deceleration is G Ia" (1
1) “If” on page 5, line 6, and increase by 1 on line 7”
In between, add "When 11 pressure PM reaches pm". (12> Page 5, line 8, 1 of the day changes, but I
'! It decreases to j2o. ”, □(13), page 5, 9
``Decrease'' is added between ``braking deceleration'' and ``adjustment'' on the day of the trip. (14) Page 5, line 11 [Calipa Cr. C2, 1 [to caliper C+ J, (15) page 5, lines 11 to 12 "both Pco=Pc+j to rPco-Pc+J, (16> page 5, lines 12 to 13 Row [Caliper C]
, C2J ["Calipa C + J, (17)
Page 5, lines 13 to 14, “Each Go, G21
Correct J to rguj and delete "together" in parentheses. 18) On page 3, line 4, the phrase “based on actual numbers” was changed to “braking force setting not indicated” (19) On page 6, line 4, “Also” and “this machine 1” During this period, add [Ride in a boarding car 2 @ when boarding]. (20) On page 6, line 6, change "braking deceleration G+" to "If braking deceleration is GR," and (21) on page 6, line 7, replace "G1" with rGRJ. (22) I'G on page 3, line 4? It says o-oj.
g2”, ku23) “G21-1” on the 4th line of page 3 is replaced with “G21-1”.
2'', (24> page 3, line 4, l'G+o=G2o G1
1=G21J becomes rg2 <GR'<G2J, (
25) On page 7, line 1, “represented, result j”
(26) On page 7, line 4, the words ``translation'' are amended to ``can also be expressed.'' Figures 3 and 4 of the above 80 drawings are amended as shown in the attached sheet. Figure 3 Figure 4

Claims (1)

[Claims] A braking device for a two-wheeled vehicle with a sidecar, in which hydraulic pressure is transmitted from a master cylinder as a braking pressure source to each of a machine-side hydraulic brake and a sidecar-side hydraulic brake through a hydraulic circuit, the hydraulic circuit transmitting hydraulic pressure to the braking pressure of the master cylinder. Valve: A braking device for a two-wheeled vehicle with a sidecar, which is characterized by supplying proportional brake hydraulic pressure to the hydraulic brake on the sidecar side, and selectively supplying reduced pressure brake hydraulic pressure to the brake on the machine side.