JPH075018Y2 - Mounting bracket for power steering control valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mounting bracket for a power steering control valve that adjusts the flow rate and pressure of oil supplied to the power steering according to the vehicle speed.

[Conventional technology]

In a vehicle equipped with power steering, the steering wheel may be too light during high-speed traveling, which may cause inconvenience in driving operation. Therefore, for example, a vehicle speed-sensitive power steering device is used in which a power steering control valve is provided in the middle of a hydraulic circuit, and the steering force can be changed by adjusting the flow rate and pressure of oil supplied to the power steering body according to the vehicle speed. There is.

FIG. 4 shows a vehicle speed-sensitive power steering device, in which a plunger 23a of a power steering control valve 23 (shown in FIG. 2) is passed through a controller 22 which outputs a control signal in accordance with the vehicle speed detected by a vehicle speed sensor 4. Is operated up and down, and the flow rate and pressure of the oil (oil is returned from the return port 23e to the oil tank by returning the oil to the oil tank by narrowing the communication hole 23d between the inflow passage 23b and the outflow passage 23c where the oil flows horizontally along the valve axis direction. It reduces the pressure).

FIG. 5 shows a state in which the power steering control valve 23 is mounted on the mounting bracket 24.

The mounting bracket 24 (bracket main body) has base portions 24b on both sides of a C-shaped side surface portion 24a and is attached to a chassis frame (not shown). Then, the control valve 23
Control valve on the mounting bracket 24 so that the axial direction of the valve through which the oil flows is the same as the longitudinal direction of the bracket main body 25 on which both base portions 24b of the mounting bracket 24 are provided.
23 is installed.

Here, the power steering control valve 23 is directly attached to the chassis frame, and is configured to have the base portions 24b on both sides of the C-shaped side surface portion 24a.
Because of the layout requirement to effectively use the space between the engine and the power steering gear box, (2) the power steering control valve 23 is placed in front of the radiator to cool the high temperature oil by the cooling air.
(3) This is to prevent deterioration of oil by cooling.

[Problems to be solved by the device]

However, when the flow rate and the pressure of the oil are switched by the vertical movement of the plunger 23a of the control valve 23, the control valve 23 allows the oil to pass through the throttle portion of the communication hole 23d, so that the viscosity of the oil and the effect of the passage restrict the horizontal movement. A hydraulic reaction force F, which is the hydraulic reaction force F viewed from the direction of the oil flowing in the direction, is received.

Since the line of action of the hydraulic reaction force F and the mounting surface 23f of the control valve 23 have a distance L, they receive a moment M = F · L. This moment M causes the control valve 23
Is rotationally displaced and the mounting bracket 24 is deformed, so that hydraulic pipes (not shown) attached to both ends of the control valve 23 may vibrate, resulting in abnormal noise due to the vibration.

As a problem caused by such a pressure change of the oil itself, an example in which a spool valve for switching the oil flow is moved is shown in Japanese Utility Model Publication No. 61-3732.

The present invention has been made to solve the above problems, and its purpose is to prevent vibration of hydraulic pipes and prevent abnormal noise when switching the oil flow rate and pressure of a power steering control valve. It is to prevent the occurrence.

[Means for Solving the Problems]

In order to achieve the above object, the present invention provides a power steering control valve for controlling the flow rate and pressure of oil according to the vehicle speed on an upper wall of a bracket main body having bases on both sides of a C-shape. In a mounting bracket for a power steering control valve, wherein the valve axial direction and the bracket main body having both bases are mounted in the same direction, a bracket is provided between both side wall surfaces of the side surface of the bracket main body. Ribs are provided along the longitudinal direction of the main body.

[Action]

By providing a rib between both side wall surfaces of the side surface portion of the bracket main body along the longitudinal direction of the bracket main body, rigidity in the longitudinal direction of the bracket main body having both base portions is improved.

〔Example〕

Hereinafter, a mounting bracket for a power steering control valve according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

FIG. 4 shows a vehicle speed-sensitive power steering device, in which oil is supplied from the oil pump 1 to the power steering main body 2 via the power steering control valve 23, and the oil is supplied from the power steering main body 2 to the oil tank 3. To return to.

The power steering control valve 23 adjusts the flow rate and pressure of oil via the controller 22 in accordance with the vehicle speed detected by the vehicle speed sensor. As shown in FIG. The oil is flown from the one inflow passage 23b to the other outflow passage 23c by narrowing the communication hole 23d (returning the oil from the return port 23e to the oil tank 3 to reduce the pressure).

The power steering control valve 23 is mounted on the mounting bracket 5, as shown in FIG. More specifically, this mounting bracket 5 is
As shown in FIG. 3 and FIG. 3, it is composed of a bracket body 8 having a base portion 7 at both ends of a side surface portion 6 having a V-shape, and a rib 9.

The ribs 9 are provided along the longitudinal direction of the bracket main body 8 between both side wall surfaces 6a of the side surface 6 of the V-shape. And
The power steering control valve 23 is mounted on the upper wall 8a of the bracket main body 8 such that the valve axial direction in which the oil flows is the same as the longitudinal direction of the bracket main body 8 provided with both bases 7. .

According to the above configuration, since the ribs 9 are provided between both side wall surfaces 6a of the side surface portion 6 of the bracket body 8 along the longitudinal direction of the bracket body 8, the base portion 7 of the mounting bracket 5 is provided. The rigidity of the bracket body 8 in the longitudinal direction is improved. Therefore, when the power steering control valve 23 switches the oil flow rate and pressure, even if the moment M acts on the power steering control valve 23, the rigidity is increased and the mounting bracket 5 is not deformed.

As a result, the power steering control valve 23 is not rotationally displaced, vibration of the hydraulic pipe (not shown) is prevented, and abnormal noise due to the vibration can be prevented.

[Effect of device]

As described above, according to the present invention, in the mounting bracket of the power steering control valve, when switching the oil flow rate and pressure of the power steering control valve, the vibration of the hydraulic pipe is prevented and abnormal noise due to the vibration is generated. This has the effect of preventing the occurrence of the above.

[Brief description of drawings]

FIG. 1 is a partial sectional side view of a mounting bracket for a power steering control valve according to an embodiment of the present invention, FIG. 2 is a sectional view of the power steering control valve, and FIG. 3 is a perspective view of the mounting bracket. 4 and 5 are circuit diagrams of a power steering device of the related art and the present embodiment in which a control valve for power steering is incorporated, and FIG. 5 is a partial sectional side view of a mounting bracket for a conventional power steering control valve. is there. 5 ... Mounting bracket 6 ... Side surface 6a ... Side wall surface 7 ... Base portion 8 ... Bracket body 8a ... Upper wall 9 ... Rib 23 ... Power steering control valve

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. A power steering control valve for controlling oil flow rate and pressure according to vehicle speed, comprising: a valve axial direction in which oil flows on an upper wall of a bracket main body having bases on both sides of a C-shaped side surface. In a mounting bracket for a power steering control valve mounted so that the longitudinal direction of the bracket body having both base portions is the same direction, between the both side wall surfaces of the side surface portion of the bracket body, along the longitudinal direction of the bracket body. A mounting bracket for a control valve for power steering, which is characterized by the provision of ribs.