JP2007290547A - Brake actuator supporting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake actuator supporting device capable of suppressing the displacement of a brake actuator while suppressing transmission of the noise and vibrations from the brake actuator to a vehicle body. <P>SOLUTION: In the brake actuator supporting device 10, a second bracket 14 supports a brake actuator 12 via a first elastic member. A first stopper 24A and a second stopper 24B are arranged with a space from the brake actuator 12 so as to be abutted on the brake actuator 12 in a vicinity of a part most distant from a part to be supported by the second bracket 14 in the brake actuator 12 when the brake actuator 12 is displaced. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a brake actuator support device that supports a brake actuator with respect to a vehicle body.

In recent years, in order to give an appropriate braking force to the wheels, an electronically controlled brake system that electronically controls the braking force of each wheel is installed in many vehicles. Such an electronically controlled brake system includes a brake actuator in which a pump, a solenoid valve, and the like are arranged. The brake actuator is usually disposed in the engine room and is fixed to the frame of the vehicle body. When the sound and vibration during the operation of the actuator are transmitted to the vehicle body, abnormal noise may occur. For this reason, for example, Patent Document 1 proposes an ABS actuator mounting structure in which an ABS actuator is mounted on a mounting portion via a rubber damper with an adjustment screw whose protrusion amount can be adjusted. For example, Patent Document 2 discloses a valve block that is elastically suspended from a holder via a screw and a buffer element.
JP 2004-231080 A JP-T-2004-506572

  When the brake actuator is attached via a rubber damper or a shock absorbing element, the use of a soft rubber damper or shock absorbing element can suppress transmission of sound and vibration to the vehicle body when the brake actuator is activated. However, when a soft rubber damper or a shock absorbing element is used, the brake actuator is greatly displaced when the vehicle is braked or traveling on a rough road. The brake actuator is connected to a pipe through a port, and the degree of displacement of the actuator affects the shape of the connected pipe and the routing method. For this reason, when a brake actuator is displaced greatly, there exists a possibility of increasing the cost of piping. On the other hand, if a rubber damper or a buffer element is not used, the displacement of the actuator can be suppressed, but sound and vibration during operation of the actuator are easily transmitted to the vehicle body.

  The present invention has been made in view of such problems, and an object thereof is to suppress displacement of the brake actuator while suppressing transmission of sound and vibration from the brake actuator to the vehicle body.

  In order to solve the above problems, a brake actuator support device according to an aspect of the present invention includes a support member that supports the brake actuator at a predetermined position via a first elastic member, and a second elastic member, A stopper disposed at a distance from the brake actuator such that the second elastic member contacts the brake actuator when displaced from a predetermined position. According to this aspect, transmission of sound and vibration can be suppressed by the first elastic member, and when the brake actuator is about to be displaced, the displacement can be suppressed by the stopper.

  The stopper may be provided so as to contact the brake actuator in the vicinity of the position farthest from the support position of the brake actuator supported by the support member. The amount of displacement of the brake actuator is large in the vicinity of the portion farthest from the portion supported by the normal support member. When the stopper comes into contact with the brake actuator at such a position, the displacement of the brake actuator can be effectively suppressed.

  The stopper may have a distance adjusting means for adjusting a distance from the brake actuator. According to this aspect, the interval between the stopper and the brake actuator can be set with high accuracy, and the displacement amount of the brake actuator can be suppressed with high accuracy.

  The support member may support one side surface of the brake actuator. There are various sizes of brake actuators mounted on vehicles. Therefore, when a support system in which the brake actuator is supported by two opposing side surfaces is employed, it is necessary to prepare a dedicated member for supporting the brake actuator for each brake actuator. On the other hand, if the brake actuator can be supported on one side, the support member can be commonly used for a plurality of types of brake actuators regardless of the size of the brake actuator. According to this aspect, it is possible to suppress the displacement of the brake actuator while supporting the brake actuator on one side surface. For this reason, the support member can be used in common for a plurality of types of brake actuators, the cost of the support member can be reduced, and management can be facilitated.

  According to the present invention, it is possible to suppress displacement of the brake actuator while suppressing transmission of sound and vibration from the brake actuator to the vehicle body.

  Hereinafter, embodiments of the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the drawings.

  FIG. 1 is an overall configuration diagram of a brake actuator support device 10 according to the present embodiment. The brake actuator support device 10 includes a first bracket 18, a second bracket 14, a damper 16, a third bracket 20, a first stopper 24A, and a second stopper 24B.

  A pump (not shown) is disposed inside the brake actuator 12. The pump is provided with a pump motor (not shown), and the pump motor drives the pump to supply hydraulic fluid pressure to the accumulator.

  In addition, an electromagnetic pressure increasing valve (not shown), an electromagnetic pressure reducing valve (not shown), and an electromagnetic master valve (not shown) are arranged inside the brake actuator 12. Electromagnetic pressure increase valves are provided for each of the four wheels. When the electromagnetic pressure increase valves are opened, the hydraulic fluid is supplied from the accumulator to the wheel cylinders of the corresponding wheels to increase the wheel cylinder pressure, and the braking force is applied to the wheels. give. Electromagnetic pressure reducing valves are also provided corresponding to each of the four wheels, and by opening the valve, the hydraulic fluid is discharged from the wheel cylinder of the corresponding wheel to the reservoir to reduce the wheel cylinder pressure, and is applied to the wheel. Reduce or release braking force. The electromagnetic master valve causes the master cylinder and the wheel cylinder to communicate with each other by opening the valve. The brake actuator is a unit that includes a pump or solenoid valve in a box-shaped casing. An electronic control unit (not shown) is mounted on the vehicle body, and the electronic control unit controls the operation of the electromagnetic valve and the pump motor by controlling the electric power supplied to the electromagnetic valve and the pump motor.

  A brake pipe 15 is connected to the port 17 of the brake actuator 12. The brake pipe 15 connects the master cylinder, the wheel cylinder of each wheel, and the brake actuator 12.

  The 1st bracket 18 is formed in the shape which bent the sheet metal so that a plane part may be formed in the center upper part so that it may be lifted from the bottom. The second bracket 14 is formed in a shape obtained by bending a sheet metal into an L shape. The first bracket 18 is fixed to each other by welding or screwing in a state where the back surface of the second bracket 14 is in contact with the flat portion of the first bracket 18. As a result, a raised portion is formed by the bent portion of the second bracket 14. The first bracket 18 is fixed by screwing or the like with the bottom surface in contact with the vehicle body 22.

  The damper 16 is formed of an elastic member such as rubber. The brake actuator 12 is fixed to the rising portion of the second bracket 14 via a damper 16 with screws or the like. Accordingly, the second bracket 14 supports the brake actuator 12 via the damper 16 below one side surface thereof.

  Pumps and solenoid valves arranged inside the brake actuator 12 generate sound and vibration when activated. The damper 16 suppresses transmission of these sounds and vibrations generated in the brake actuator 12 to the vehicle body 22.

  Further, by supporting the brake actuator 12 below, an increase in the cost of the second bracket 14 caused by increasing the height of the rising portion of the second bracket 14 can be suppressed. Further, when the brake actuator 12 is supported by the two raised portions facing each other, the intervals between the raised portions must be different. Therefore, the brake actuator 12 having a different size is supported by the common second bracket 14. Will be difficult. Thus, by supporting the brake actuator 12 by one side surface, it becomes possible to support the brake actuators 12 of various sizes using the common second bracket 14. Note that a plurality of screwing locations (two locations in this embodiment) are provided in a direction perpendicular to the drawing sheet. The brake actuator 12 is arranged so that the port 17 is positioned on the upper side in consideration of workability during manufacturing and maintenance.

  When a relatively large braking force is applied to the vehicle, or when the vehicle is traveling on a rough road, a relatively large acceleration is generated in the brake actuator 12. In the aspect in which the brake actuator 12 is supported below the one side surface via the damper 16 as in the brake actuator support device 10 of the present embodiment, the damper 16 provided at the location supporting the brake actuator 12 is an elastic member. The brake actuator 12 is displaced so that the damper 16 is deformed and swings around the attachment position with the second bracket 14.

  On the other hand, the port 17 connected to the brake pipe 15 is located above the brake actuator 12. Accordingly, the port 17 is also displaced when the brake actuator 12 swings around the screwing point. If the displacement of the port 17 is large, the brake pipe 15 may be flexibly deformed with respect to the displacement of the port 17 by, for example, extending the brake pipe 15 and routing the brake pipe 15, but the cost of the brake pipe 15 is increased. There is a possibility to make it. In order to reduce the cost of the brake pipe 15, it is preferable to suppress the displacement of the brake actuator 12.

  If the brake actuator 12 is fixed without using the damper 16 in order to suppress the displacement of the brake actuator 12, vibrations of a pump and an electromagnetic valve arranged inside the brake actuator 12 are easily transmitted to the vehicle body 22. Therefore, the brake actuator support device 10 according to the present embodiment includes a first stopper 24A and a second stopper 24B (hereinafter collectively referred to as “stopper 24” as necessary). The stopper 24 is attached to the third bracket 20.

  The third bracket 20 is provided by joining three square members in a Z shape by welding or the like so that the angles of the respective members become a right angle. The third bracket 20 is fixed to the first bracket 18 by screwing or welding or the like so as to surround the brake actuator 12 supported by the second bracket 14. It is needless to say that the third bracket 20 may be provided by bending or drawing a plate-like member and processing the same shape.

  The stopper 24 is disposed at a distance from the brake actuator 12 and attached to the third bracket 20 so as to come into contact with the brake actuator 12 when the brake actuator 12 is displaced. Further, the stopper 24 is disposed at a position in contact with the brake actuator 12 when the brake actuator 12 is displaced, in the vicinity of the position farthest from the position supported by the second bracket 14 in the brake actuator 12.

  Specifically, first, the first stopper 24 </ b> A is attached to the third bracket 20 so as to be spaced from the upper side of the side surface of the brake actuator 12 that faces the side surface supported by the second bracket 14. The second stopper 24 </ b> B is attached to the third bracket 20 so as to have a distance from the upper surface located on the side surface facing the side surface supported by the second bracket 14.

  For example, when the brake actuator 12 swings in the counterclockwise direction in FIG. 1 around the mounting position with the second bracket 14, the side surface of the brake actuator 12 facing the side surface supported by the second bracket 14. Is in contact with the first stopper 24A. Further, when the brake actuator 12 swings in the clockwise direction in FIG. 1 around the attachment position with the second bracket 14, the upper surface located on the side surface facing the side surface supported by the second bracket 14 is the second. It contacts the stopper 24B.

  By providing the stopper 24 in this manner, the damper 16 suppresses the transmission of sound and vibration from the brake actuator 12 to the vehicle body 22 via the second bracket 14 and the first bracket 18 by the damper 16. Displacement can be suppressed.

  FIG. 2 is a configuration diagram of the stopper 24 according to the present embodiment. The stopper 24 has a damper unit 26, a male screw 32, and a fixing nut 34. The damper unit 26 includes a damper 28 and an adjustment nut 30. In FIG. 2, the damper unit 26 is shown in a cross section by a plane including the central axis of the male screw 32 for easy understanding.

  The damper 28 is formed in a cylindrical shape by an elastic member such as rubber. A cylindrical bottomed hole is provided on one end face of the damper 28. The adjustment nut 30 is formed in a columnar shape having an outer diameter smaller than the outer diameter of the damper 28 and having a shorter length than the damper 28. An internal thread portion coaxial with the outer periphery is provided inside the adjustment nut 30. The adjusting nut 30 is inserted into the hole of the damper 28 and fixed.

  The male screw 32 constituting the first stopper 24A is attached to the third bracket 20 so that the axial direction is directed above the side surface of the brake actuator 12 that faces the side surface attached to the second bracket 14. The male screw 32 constituting the second stopper 24B is attached to the third bracket 20 so that the axial direction is directed to the upper surface located on the side surface facing the side surface attached to the second bracket 14.

  A fixing nut 34 is first screwed into each of the male screws 32, and then an adjustment nut 30 is screwed into the male screw 32, and the damper unit 26 is attached to the male screw 32. The damper unit 26 is screwed into the male screw 32 until the appropriate distance from the brake actuator 12 is reached, and is fixed by a fixing nut 34. In this manner, the damper 28 as the second elastic member is disposed at a position where the brake actuator 12 comes into contact with the brake actuator 12, and the sound generated when the brake actuator 12 comes into contact with the stopper 24 is reduced.

  Since the stopper 24 has the male screw 32 and the adjusting nut 30, the operator who installs the damper unit 26 can adjust the distance from the brake actuator 12. Therefore, the adjustment nut 30 and the male screw 32 function as a distance adjusting means for adjusting the distance between the stopper 24 and the brake actuator 12. Since the distance between the stopper 24 and the brake actuator 12 can be adjusted, the contact portion of the stopper 24 can be accurately arranged. Therefore, high accuracy is not required for the first bracket 18, the second bracket 14, the third bracket 20, the stopper 24, and the like, and these costs can be reduced. Moreover, it is possible to easily cope with brake actuators 12 of different sizes as long as they are within the adjustment range.

  The present invention is not limited to the above-described embodiments, and an appropriate combination of the elements of each embodiment is also effective as an embodiment of the present invention. Various modifications such as design changes can be added to each embodiment based on the knowledge of those skilled in the art, and embodiments to which such modifications are added can also be included in the scope of the present invention. Here are some examples.

  In a certain modification, either the first stopper 24A or the second stopper 24B is provided. This also can suppress the displacement of the brake actuator 12 in the direction in which the first stopper 24A or the second stopper 24B is provided.

  In another modified example, when either one of the first stopper 24A and the second stopper 24B is displaced in the vicinity of the position farthest from the position supported by the second bracket 14 in the brake actuator 12, the brake actuator 12 is displaced. You may arrange | position in the position contact | abutted with the brake actuator 12. FIG. For example, the first stopper 24 </ b> A is disposed so as to be spaced from the side surface of the brake actuator 12 that faces the side surface supported by the second bracket 14, and the second stopper 24 </ b> B is disposed on the side surface of the brake actuator 12. However, it may be arranged so as to have a space above the side surface supported by the second bracket 14. The second stopper 24B is disposed so as to be spaced from the upper surface located on the side surface facing the side surface supported by the second bracket 14, and the first stopper 24A is opposed to the side surface supported by the second bracket 14. It may be arranged so as to have a distance from the lower surface located on the side surface. Displacement of the brake actuator 12 can also be suppressed by arranging the first stopper 24A and the second stopper 24B in this way.

  The second bracket 14 may support the brake actuator 12 on two opposing side surfaces of the brake actuator 12. As a result, the brake actuator 12 can be supported more stably.

1 is an overall configuration diagram of a brake actuator support device according to an embodiment. It is a block diagram of the stopper which concerns on this embodiment.

Explanation of symbols

  10 brake actuator support device, 12 brake actuator, 14 second bracket, 16 damper, 18 first bracket, 20 third bracket, 24 stopper, 28 damper, 30 adjustment nut.

Claims (4)

A support member for supporting the brake actuator at a predetermined position via the first elastic member;
A stopper that has a second elastic member and is disposed at a distance from the brake actuator so that the second elastic member contacts the brake actuator when the brake actuator is displaced from a predetermined position;
A brake actuator support device comprising:   The brake actuator support device according to claim 1, wherein the stopper is provided so as to abut on the brake actuator in a vicinity of a position farthest from a support position of the brake actuator supported by the support member.   The brake actuator support device according to claim 1, wherein the stopper further includes an interval adjusting unit that adjusts an interval between the stopper and the brake actuator.   4. The brake actuator support device according to claim 1, wherein the support member supports one side surface of the brake actuator. 5.

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