JP6090769B2 - Brake hydraulic pressure control device for vehicles - Google Patents

Description

  The present invention relates to a vehicle brake hydraulic pressure control device including a momentum sensor.

2. Description of the Related Art Conventionally, a vehicular brake fluid pressure control device that controls the magnitude of brake fluid pressure is known as a device that uses a base body that includes a brake fluid flow path (see, for example, Patent Document 1).
The vehicle brake hydraulic pressure control device of Patent Document 1 has a control housing in which a control board is accommodated. On the control board, acceleration as a momentum sensor that detects acceleration in the front-rear direction and the left-right direction of the vehicle. A sensor is arranged. The acceleration sensor is disposed on the control board at sites corresponding to the pump driving unit and the pump operating unit that are rotating parts of the rotary pump.

  According to such a vehicular brake hydraulic pressure control apparatus, the acceleration can be detected while reducing the influence of rotational fluctuations caused by the rotary pump by providing the acceleration sensor.

JP 2008-174218 A

In Patent Document 1, the acceleration sensor is disposed in the central portion of the control board corresponding to the pump drive unit and the pump operation unit.
By the way, the central part of the control board has a tendency to resonate with the vibration generated by the rotation of the pump, and is likely to be a resonance part of the control board. For this reason, in patent document 1, there existed a possibility of producing the performance degradation and tolerance degradation of an acceleration sensor by resonance.

  From such a viewpoint, an object of the present invention is to provide a vehicular brake hydraulic pressure control device capable of minimizing performance deterioration and resistance deterioration of a momentum sensor.

The present invention for solving such a problem includes a first storage chamber in which an electrical component is stored, a second storage chamber in which a control board that controls the electrical component is stored, the first storage chamber, and the second storage chamber. A vehicular brake hydraulic pressure control device including a housing including a partition wall for partitioning the storage chamber, wherein the momentum sensor is mounted on the control board; and the housing includes a support portion that supports the control board. The momentum sensor is mounted in the vicinity of the support part, and a plurality of the support parts are provided, and the control board is connected to the housing via a bonding wire. It is electrically connected to, the momentum sensor, especially that it is mounted in the vicinity of the support portion located farther from the connection position by the bonding wires of the plurality of the support portions To.

  According to this vehicle brake fluid pressure control device, since the momentum sensor is mounted in the vicinity of the support portion that supports the control board, the momentum sensor is arranged at a position where the influence of vibration is small while avoiding the resonance part of the control board. As a result, the performance deterioration and tolerance deterioration of the momentum sensor can be minimized.

  According to this vehicle brake fluid pressure control device, the momentum sensor is less susceptible to the influence of vibration of the control board when the bonding wire is connected in the production process, and the performance deterioration and resistance deterioration of the momentum sensor are minimized. Can do.

  Further, the present invention includes a base body to which the housing is attached, the base body has a plurality of attachment parts to which a bracket for fixing a vehicle body is attached, and some of the attachment parts among the plurality of attachment parts include: It is provided so that it may be located in the vicinity of the said momentum sensor.

  According to the vehicle brake hydraulic pressure control device, a part of the plurality of mounting portions is located in the vicinity of the momentum sensor, so that the influence on the momentum sensor due to external vibration can be reduced. Therefore, performance deterioration and tolerance deterioration of the momentum sensor can be minimized.

Further, the present invention is characterized in that the momentum sensor is an acceleration sensor.
According to this vehicle brake hydraulic pressure control device, it is possible to suitably detect the acceleration in the front-rear direction and the left-right direction of the vehicle while minimizing the performance deterioration and durability deterioration of the acceleration sensor.

  ADVANTAGE OF THE INVENTION According to this invention, the brake hydraulic-pressure control apparatus for vehicles which can suppress the performance degradation of a momentum sensor and tolerance degradation to the minimum is obtained.

1 is a partial cross-sectional side view showing a vehicle brake hydraulic pressure control device according to an embodiment of the present invention. It is the figure which looked at the housing which attached the control board from the front side. It is a perspective view which shows the positional relationship of an attaching part and an acceleration sensor. (A) is a figure which shows a control board, (b) is explanatory drawing which shows the positional relationship of a screw hole and an acceleration sensor. It is a partial exploded perspective view of the brake fluid pressure control device for vehicles.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same element and the overlapping description is abbreviate | omitted.

First, the configuration of the vehicle brake hydraulic pressure control device U will be described with reference to FIG.
The vehicle brake fluid pressure control device U detects the behavior of the base body 10 on which electric parts such as the electromagnetic valve V and the motor 50, a reciprocating pump (not shown) and the like are assembled, and the opening and closing of the electromagnetic valve V and the motor. And a control housing (housing) 20 that accommodates a control board 25 that controls 50 rotational operations. A flow path (not shown) through which the brake fluid flows is formed in the base body 10, and the control board 25 operates the electromagnetic valve V and the motor 50 based on the behavior of the vehicle body, whereby the brake in the flow path is formed. The hydraulic pressure is varied.

The base body 10 is an aluminum alloy part formed in a substantially rectangular parallelepiped shape, and a flow path (oil path) for brake fluid, which is a fluid, is formed therein.
A plurality of bottomed mounting holes (not shown) are formed in the front surface 10a of each surface of the base body 10, and electrical components such as a solenoid valve V and a pressure sensor (not shown) are mounted in the mounting holes. Has been. The housing 20 is fixedly attached to the front surface 10a by means of mounting screws 20a.
The electromagnetic valve V is mounted so as to protrude from a mounting hole (not shown), and an electromagnetic coil 23 (electric part) for driving the electromagnetic valve V is mounted around the protruding portion. The The electromagnetic coil 23 is accommodated in the housing 20. The electromagnetic coil 23 is mounted around the protruding portion of the electromagnetic valve V when the housing 20 is attached to the base 10.

A motor 50 is attached to the back surface 10 b of the base 10. The motor 50 is for driving two pumps (not shown) provided in the base 10, and a motor mounting hole (not shown) into which the output shaft of the motor 50 is inserted is formed on the mounting surface. ing.
Further, an inlet port 15 to which a pipe leading to a master cylinder (not shown) is connected is provided on the back surface 10 b of the base body 10.

Four outlet ports (not shown) to which pipes leading to wheel brakes (not shown) are connected are formed on the upper surface 10c of the base body 10.
As shown in FIG. 3, mounting holes (mounting portions) 13 a and 13 b for mounting brackets (not shown) for fixing the vehicle body are formed on the lower surface 10 d of the base body 10 at intervals in the width direction of the base body 10. ing.
As shown in FIG. 1, an attachment hole (attachment portion) 14a for attaching a bracket (not shown) for fixing the vehicle body is formed in the upper portion of the side surface 10e of the base body 10.
Further, a pump hole 11 for mounting a pump (not shown) and a damper hole 12 functioning as a damper are formed on the side surface 10e of the base body 10. The pump hole 11 communicates with the motor mounting hole in the base 10.

  When the vehicle brake fluid pressure control device is mounted on a vehicle, as shown in FIG. 3, a fixing bolt (not shown) inserted through a vehicle body fixing bracket (not shown) with the lower surface 10d of the base 10 down. (Not shown) is fastened to the mounting holes 13a, 13b and 14a of the base body 10, respectively.

  As shown in FIG. 1, the housing 20 includes a housing main body 21 formed of a resin in a substantially rectangular tube shape, and a lid portion 22 that covers the opening of the housing main body 21. The housing body 21 includes a flange portion 21 c that abuts on the outer peripheral edge of the front surface 10 a of the base body 10. As shown in FIG. 2, four boss portions 21c1 to 21c4 are integrally projected at appropriate positions of the flange portion 21c. Each boss portion 21c1 to 21c4 is formed with a screw hole (not shown) through which the mounting screw 20a is inserted.

  As shown in FIG. 1, a partition wall 24 in which a part of the housing side connection terminal 242 is embedded is formed in the housing body 21. The partition wall 24 serves to partition the housing 20 into a first storage chamber 21a that opens toward the base 10 side and a second storage chamber 21b that opens toward the anti-base 10 side. It has a surface that is substantially parallel to the surface 10a.

The first accommodation chamber 21a accommodates the electromagnetic coil 23 attached to the solenoid valve V, and the second accommodation chamber 21b accommodates the control board 25.
The partition wall 24 is formed with eight through holes 241, 241 (see FIG. 5) arranged side by side. As shown in FIG. 1, a pair (two) of electromagnetic coils 23 and 23 are arranged in each through hole 241 so as to be adjacent to each other.
The housing side connection terminal 242 is configured by a metal plate embedded in the housing main body 21 or in the partition wall 24 and, as shown in FIG. 1, from the opening edge of the through hole 241 in the partition wall 24 into the through hole 241. It protrudes and bends into the second storage chamber 21b. The distal end portion 243 of the housing side connection terminal 242 is located in the second storage chamber 21b. A connecting end 23 a of the electromagnetic coil 23 is connected to the tip 243.

  As shown in FIG. 5, support portions 24 a to 24 d that support the control substrate 25 are integrally formed on the inner peripheral surface of the second storage chamber 21 b. A metal collar 244 that forms a screw hole is embedded in the support portions 24a to 24d. Fixing screws 26a to 26d for fixing the control board 25 are screwed to the collars 244, respectively.

  The lid 22 is fixed to the opening 21d of the housing main body 21 by an adhesive, welding, or the like (see FIG. 2).

As shown in FIG. 4A, the control board 25 is obtained by attaching an electronic component 25e such as a semiconductor chip and an acceleration sensor 30 as a momentum sensor to a rectangular board on which an electronic circuit (conductive member) is printed. Yes, as shown in FIGS. 2, 3, and 5, it is fixed in the second storage chamber 21b.
As shown in FIG. 4A, screw holes 25 a to 25 d through which fixing screws 26 a to 26 d (see FIG. 5) are inserted are formed at the four corners of the control board 25. The screw holes 25a to 25d are provided corresponding to the respective collars 244 (see FIG. 5) of the support portions 24a to 24d of the second storage chamber 21b. Thereby, the control board 25 can be fixed to each support part 24a-24d by screwing the screws 26a-26d inserted through the screw holes 25a-25d to the respective collars 244.

As shown in FIG. 4B, a connection terminal 25f is provided on the right edge of the control board 25 on the side of the straight line L14 passing through the centers of the screw holes 25c and 25d. The connection terminal 25f is provided corresponding to each terminal 24f (see FIG. 2) of the terminal portion 24e provided in the second storage chamber 21b. As shown in FIG. 2, each connection terminal 25 f and each terminal 24 f are electrically connected by a bonding wire 27.
In addition, a connection terminal 25g is provided on the lower edge of the control board 25 which is on the side of the straight line L13 passing through the centers of the screw holes 25b and 25c. The connection terminal 25g is provided corresponding to each terminal 24g (see FIG. 2) of the terminal portion 24e1 provided in the second storage chamber 21b. As shown in FIG. 2, each connection terminal 25g and each terminal 24g are electrically connected by a bonding wire 27a. With such electrical connection, the control board 25 is connected via the connection terminal 25f, the bonding wire 27, the terminal 24f, and the housing side connection terminal 242, or the connection terminal 25g, the bonding wire 27a, the terminal 24g, and the housing side connection terminal 242. Is electrically connected to the electromagnetic coil 23.

  The acceleration sensor 30 is a sensor that detects acceleration in the front-rear direction and the left-right direction of the vehicle, and is arranged at the peripheral portion of the screw hole 25a (in the vicinity of the support portion 24a of the second storage chamber 21b) as shown in FIG. ing. Here, as shown in FIG. 4A, the peripheral portion of the screw hole 25a is connected to the connection terminal 25f to which the bonding wire 27 (see FIG. 2) is connected and the bonding wire 27a (see FIG. 2) on the control board 25. (See FIG. 4) is located away from both of the connection terminals 25g to be connected, and is hardly affected by the vibration of the control board 25 generated when the bonding wires 27 and 27a are connected.

  In the present embodiment, the control board 25 is rectangular, and as shown in FIG. 4B, the peripheral edge of the screw hole 25a is located at the corner between the long side 251 and the short side 252 of the rectangle. The distance S2 from the connection terminal 25g to the center of the acceleration sensor 30 is smaller than the distance S1 from the connection terminal 25f to the center of the acceleration sensor 30. In order to make the distance S2 as large as possible, the acceleration sensor 30 may be arranged close to the long side 251 of the control board 25.

The acceleration sensor 30 is positioned substantially inside a quadrangle (shown by a one-dot chain line in the drawing) formed by connecting the centers of the screw holes 25a to 25d at the peripheral edge of the screw hole 25a, and a part of the acceleration sensor 30 is screw hole 25a. And the screw hole 25c are arranged so as to fall on a diagonal line L2. Further, the center of the acceleration sensor 30 is located in the inner region of the top (center of the screw hole 25a) of a triangle (shown by a one-dot chain line in the figure) formed by connecting the centers of the screw holes 25a, 25c, and 25d. Yes. The acceleration sensor 30 is disposed at a position where it does not contact the head of the fixing screw 26a (a position where a gap is formed between the outer peripheral surface of the head of the fixing screw 26a and the outer peripheral surface of the acceleration sensor 30). Note that the distance S1> the distance S2.
Further, the acceleration sensor 30 has a region (indicated by diagonal lines) surrounded by an arc L20, a straight line L11, and a straight line L12 drawn by a straight line L13 centered on the screw hole 25c and having a radius between the screw holes 25b and 25c. A portion of the acceleration sensor 30 is placed on both the displayed area) and the diagonal line L2.

As shown in FIG. 2, the acceleration sensor 30 is arranged so as to be positioned in the vicinity of the boss portion 21 c 1 of the flange portion 21 c when the housing 20 is viewed from the front side of the base body 10. In addition, the fixing screw 26a and the mounting screw 20a are arranged such that a reference line L3 parallel to the short side 252 of the control board 25 and passing through the center of the screw hole 25a overlaps the mounting screw 20a of the boss portion 21c1. It is configured to be tightened in the vicinity.
That is, the acceleration sensor 30 is configured to be indirectly supported by the base body 10 via the control board 25, the fixing screw 26a, the support portion 24a, the housing body 21, the boss portion 21c1, and the mounting screw 20a.

  Further, as shown in FIG. 2, when the housing 20 is viewed from the front side of the base 10, the mounting hole 14a of the mounting holes 13a, 13b, 14a is located near the acceleration sensor 30 (the reference line L3 and the above-described reference line L3). The control board 25 is provided so as to be positioned in a corner area of the base body 10 surrounded by a reference line L4 that is parallel to the long side 251 of the control substrate 25 and passes through the center of the screw hole 25a.

According to the vehicle brake hydraulic pressure control device of the present embodiment described above, since the acceleration sensor 30 is mounted in the vicinity of the support portion 24a of the control board 25, the resonance location of the control board 25 (the center of the control board 25). ), The acceleration sensor 30 is disposed at a position where the influence of vibration is small, and performance deterioration and durability deterioration of the acceleration sensor 30 can be minimized.
Further, since the acceleration sensor 30 can be mounted on the control board 25, it is not necessary to prepare a separate board for the acceleration sensor 30, and the number of assembly steps, the number of parts, and the cost can be reduced. it can.

  Moreover, since the acceleration sensor 30 is mounted in the vicinity of the support part 24a located in the side far from the connection position by the bonding wires 27 and 27a among the support parts 24a to 24d, in the production process, the bonding wire 27 and It becomes difficult for the acceleration sensor 30 to be affected by the vibration of the control board 25 at the time of connection 27a, and the performance deterioration and resistance deterioration of the acceleration sensor 30 can be minimized.

  Moreover, since the attachment hole 14a is provided so that it may be located in the vicinity of the acceleration sensor 30 among the attachment holes 13a, 13b, and 14a, the influence on the acceleration sensor 30 by external vibration can be reduced. Accordingly, it is possible to minimize performance deterioration and resistance deterioration of the acceleration sensor 30.

The shapes of the base 10 and the housing 20 shown in the above embodiment are merely examples, and various shapes can be employed. Although the acceleration sensor 30 has a rectangular shape, the acceleration sensor 30 is not limited to this and may have various shapes.
In the above embodiment, the acceleration sensor 30 is shown as the momentum sensor. However, the present invention is not limited to this. The arrangement of a yaw rate sensor that detects the turning angular velocity of the vehicle, a roll angle sensor that detects the roll angle of the vehicle, and the like. It can be suitably applied to.

DESCRIPTION OF SYMBOLS 10 Substrate 20 Housing 21a 1st storage chamber 21b 2nd storage chamber 24 Partition wall 24a-24d Support part 25 Control board 25f Connection terminal 25g Connection terminal 27, 27a Bonding wire 30 Acceleration sensor 50 Motor U Brake brake hydraulic pressure control apparatus for vehicles

Claims (3)

A first storage chamber in which an electrical component is stored; a second storage chamber in which a control board that controls the electrical component is stored; and a partition wall that partitions the first storage chamber and the second storage chamber. In a vehicle brake hydraulic pressure control device comprising a housing and having a momentum sensor mounted on the control board,
The housing has a support portion for supporting the control board,
The momentum sensor is mounted in the vicinity of the support part ,
A plurality of the support portions are provided,
The control board is electrically connected to the electrical component via a bonding wire spanned between the housing and the control board,
The said momentum sensor is mounted in the vicinity of the said support part located in the side far from the connection position by the said bonding wire among several said support parts, The brake hydraulic pressure control apparatus for vehicles characterized by the above-mentioned. A base on which the housing is mounted;
The base has a plurality of attachment portions to which a bracket for fixing the vehicle body is attached,
A plurality of said mounting portions of some of the mounting portion, the momentum vehicle brake hydraulic pressure control apparatus according to claim 1, characterized in that are provided so as to be positioned in the vicinity of the sensor. The momentum sensor vehicle brake hydraulic pressure control apparatus according to claim 1 or claim 2, characterized in that an acceleration sensor.

Images