JP2544337Y2 - Actuator for anti-skid device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator for an anti-skid device for a vehicle, which controls a hydraulic pressure of a brake fluid supplied to a wheel cylinder according to a skid state of a vehicle wheel.

[0002]

2. Description of the Related Art When an automobile is suddenly braked, a brake device is used to control brake fluid pressure supplied to a wheel cylinder, suppress directional skid of a wheel, secure directional stability, and shorten a braking distance. And an anti-skid device for controlling the hydraulic pressure of the brake fluid flowing from the master cylinder to the wheel cylinder. The anti-skid device uses an actuator for operating the anti-skid device. The actuator includes a pump for supplying brake fluid stored in a reservoir tank to a wheel cylinder, a motor for driving the pump, The electromagnetic valve, which controls the fluid pressure of the fluid, or a relay that controls the current to the solenoid valve, and the like, the solenoid valve is normally opened at the time of braking, brake fluid from the master cylinder to the wheel cylinder And a pressure-reducing solenoid valve that opens when the wheels tend to skid during rapid braking and reduces the hydraulic pressure in the wheel cylinder. In recent vehicle designs, it is desired that these electromagnetic valves, pumps, motors, and the like be compactly combined to reduce the size and weight of the entire apparatus.

FIG. 2 is a schematic perspective view showing an example of an actuator of such a conventional anti-skid brake device for a vehicle. In the figure, reference numeral 1 denotes an actuator housing, a pump for supplying brake fluid stored in a reservoir tank (not shown) to a wheel cylinder, a motor for driving the pump, an electromagnetic valve for controlling the hydraulic pressure of the brake fluid, or It houses a relay that controls the current to the solenoid valve. Reference numerals 2, 3 and 4 denote brake hydraulic discharge ports provided in parallel in the actuator housing 1, respectively, and flare nuts 8, 9 and 10 are screwed to the brake hydraulic discharge ports 2, 3 and 4, respectively. Then, the brake pipes 5, 6, and 7 are mounted. The brake pipes 5 and 6 are connected to the respective brake devices for the front wheels, and the brake pipes 7 and 6 are connected to each other.
Is connected to a rear wheel brake device.

[0004]

According to the actuator of the conventional anti-skid device configured as described above,
The adjacent flare nuts 8 and 9 have the same shape, and the flare nut 10 is different.
The axial lengths of the nuts 10a and 9a are the same, and the nut heads of the nuts 10a are different.
No. 7).

However, with the demand for the miniaturization of the actuator of the anti-skid device, the arrangement pitch of the brake hydraulic pressure discharge ports 2, 3 and 4 tends to be narrowed. , 9 and 10, the tool interferes with the flared nut which has not been tightened, making the tightening operation difficult, and as a result, erroneous mounting due to the misplacement of the brake pipes 5, 6, and 7 occurs. There was something.

In order to prevent such erroneous assembly, the installation angles of the discharge ports are different from each other, and flare nuts having different screw diameters are used.
If this countermeasure was taken, it would cause a significant cost increase.

Therefore, the present invention prevents a tool from interfering with other flare nuts when tightening each flare nut, thereby simplifies the tightening operation quickly and prevents erroneous assembly, and is advantageous in cost. An object of the present invention is to provide an actuator device for an anti-skid device.

[0008]

In order to achieve this object, the present invention provides a method of making a nut head of a flare nut different in axial direction, and connecting a flare nut having a different axial size of the nut head to each brake. The liquid discharge ports are alternately arranged.

[0009]

In the flare nut of the present invention, as a result of alternately arranging nut heads having different axial sizes, the arrangement pitch of each brake hydraulic pressure discharge port is eventually increased. Tightening work will be performed without interfering with the flare nut.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic perspective view showing a flare nut and a part of a brake pipe of an actuator for an anti-skid device according to an embodiment of the present invention. Reference numerals 28, 29 and 30 denote brake hydraulic pressure discharge ports of an actuator housing. Flared nuts, screw portions 28a, 29a and 30a and nut heads 28b and 29, respectively.
b and 30b. The nut heads 28b and 3
0b has the same axial size, and the nut head 29b has a larger axial size than the nut heads 28b and 30b. Each of the flare nuts 28, 29, and 30 is screwed into a brake hydraulic pressure discharge port, respectively, and is connected to brake pipes 25, 26, and 27.
Is installed. The brake pipes 25 and 26
Is connected to each brake device for the front wheel,
The brake pipe 27 is connected to a brake device for a rear wheel.

With the above configuration, the nut heads 28b and 30b of the flare nuts 28 and 30 have the same axial size, and the flare nut 29
The nut head 29b is larger in axial size than the nut heads 28b and 30b, and has different axial sizes from each other. For example, the flare nuts 28 and 30 are connected to the brake hydraulic pressure discharge ports. When the flare nut 29 is screwed into the brake hydraulic pressure discharge port after screwing, the tool 20 is inserted into a wide space between the nut head 29b of the flare nut 29 and the brake pipes 25 and 27, and is adjacent to the flare nut 29. The tightening operation can be performed without interference with the nut heads 28b and 30b of the flare nuts 28 and 30. This is the same as increasing the arrangement pitch of the brake hydraulic pressure discharge ports, and the tightening operation can be easily performed.

In the above embodiment, the flare nut 2
The nut head 29b of No. 9 has a larger axial size than the nut heads 28b and 30b of the flare nuts 28 and 30, but is not limited to this, and eventually the shaft of the nut heads 28b, 29b and 30b What is necessary is just to arrange | position at each brake hydraulic discharge port so that a direction size may differ, Therefore, flare nuts 28 and 3
The axial size of the nut heads 28b and 30b of 0
The flare nut 29 may be larger than the nut head 29b. Further, in the above embodiment, the brake hydraulic pressure discharge port is a three-port port. However, the present invention is not limited to this, and may be applied to a four-port port.

[0014]

In the anti-skid device actuator of the present invention configured as described above, the flare nuts are arranged such that nut heads having different axial sizes are alternately arranged. This is the same as increasing the arrangement pitch, and the tightening tool can perform the tightening operation without interfering with other flare nuts. As a result, it is possible to prevent erroneous assembling due to misplacement of the brake pipe, and to change the installation angles of the discharge ports to prevent erroneous assembling, or to change the screw diameter of the flare nut to each other. There is no need to take any measures such as using different ones, which contributes to cost reduction.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing a flare nut and a part of a brake pipe of an actuator for an anti-skid device according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view showing an example of an actuator of a conventional anti-skid brake device for a vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Actuator housing 2 Brake hydraulic pressure discharge port 3 Brake hydraulic pressure discharge port 4 Brake hydraulic pressure discharge port 25 Brake pipe (for front wheel brake device) 26 Brake pipe (for front wheel brake device) 27 Brake pipe (for rear wheel brake device) 28 Flare nut 29 Flare nut 30 Flare nut

Claims (1)

(57) [Scope of request for utility model registration] 1. An anti-skid device actuator in which a plurality of brake hydraulic pressure discharge ports are provided in parallel in an actuator housing, and a brake pipe is attached to each of the brake hydraulic pressure discharge ports via a flare nut. An actuator for an anti-skid device, characterized in that the axial size of the nut head of the flare nut is different, and flare nuts having different axial sizes of the nut head are alternately arranged in the respective brake hydraulic pressure discharge ports. .