JP2012192762A - Arrangement structure of brake pressure adjuster - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an arrangement structure of a brake pressure adjuster which structure protects the brake pressure adjuster from a splash of water, an incoming rock, etc., and enables miniaturization of a mounting bracket for mounting the brake pressure adjuster on a vehicle body frame.SOLUTION: The arrangement structure of a brake pressure adjuster 80 that adjusts a brake pressure of a vehicle is adopted as a structure in which a vehicle floor 101 under a driver's seat 90 is bulged upward to form a space S between the driver's seat 90 and a vehicle body frame 100 under the same, and the brake pressure adjuster 80 is placed in the space S. A sheet cushion 91 of the driver's seat 90 is mounted movably on the vehicle body, and an opening that allows piping work on the brake pressure adjuster 80 is formed on the vehicle floor 101 under the sheet cushion 91. The brake pressure adjuster 80 is so disposed that its piping connection faces the center side in the vehicle width direction.

Description

  The present invention relates to an arrangement structure of a brake fluid pressure adjusting device that adjusts a brake fluid pressure of a vehicle.

  The vehicle is provided with a brake fluid pressure adjusting device that adjusts the brake fluid pressure. The brake fluid pressure adjusting device includes an ABS actuator, a hill hold valve, a fluid pressure sensor, and the like.

  The ABS actuator is provided, for example, in an ABS (anti-lock braking system) for preventing the wheels from being locked even when sudden braking is applied when the vehicle is traveling on a frozen road surface. , An acceleration sensor (G sensor) for detecting the deceleration of the vehicle, a wheel speed sensor for detecting the rotational speed of each wheel, a hydraulic pressure sensor for detecting the brake fluid pressure, and the like. The hydraulic pressure supplied to each wheel brake is controlled by a control signal output from the controller to be calculated.

  The hill hold valve is provided in a brake pipe that connects the master cylinder and the wheel cylinder of the brake, and the hill hold valve has a predetermined value after the brake pedal is released by the driver when the vehicle stops on a slope. It is provided in a hill hold device for holding a braking force, and is closed when the vehicle stops and prevents movement of the vehicle by holding a predetermined brake fluid pressure on the brake pipe on the wheel cylinder side, It opens when the vehicle starts, and functions to release the braking force by releasing the brake fluid pressure that has been held so far.

  Thus, the ABS actuator included in the brake fluid pressure adjusting device is provided inside one of the pair of side members extending in the front-rear direction on the side of the vehicle in order to prevent sound and vibration during operation from propagating to the passenger compartment. It is mounted via an ABS actuator mounting bracket (see, for example, Patent Document 1).

  However, since the ABS actuator is disposed behind the front wheel, the ABS actuator can easily receive the muddy water and pebbles that the front wheel has bounced up, and problems such as water entering the ABS actuator and being damaged can occur. There was sex.

  Therefore, Patent Document 2 proposes a configuration in which the ABS actuator is installed behind the cross member of the vehicle body frame and on the inner side surface in the vehicle width direction of one side member via the ABS actuator mounting bracket.

Japanese Patent Laid-Open No. 10-297457 JP 2007-055422 A

  However, even if the ABS actuator is installed behind the cross member of the vehicle body frame and on the inner side surface in the vehicle width direction of one of the side members through the ABS actuator mounting bracket as proposed in Patent Document 2, the installation is also possible. Since the location is easy to receive muddy water and pebbles that the front wheel bounces up, it is necessary to enlarge the bottom surface of the ABS actuator mounting bracket to provide a cover function, and there is a problem that the ABS actuator mounting bracket is enlarged. It was.

  The present invention has been made in view of the above problems, and the purpose of the invention is to protect the brake fluid pressure adjusting device from flying water, flying stones, etc., and to attach the brake fluid pressure adjusting device to the vehicle body frame. An object of the present invention is to provide an arrangement structure of a brake fluid pressure adjusting device capable of reducing the size of a bracket.

  In order to achieve the above-mentioned object, the invention according to claim 1 is an arrangement structure of a brake fluid pressure adjusting device for adjusting a brake fluid pressure of a vehicle. A configuration is adopted in which a space is formed between the vehicle body frame and the brake fluid pressure adjusting device disposed in the space.

  According to a second aspect of the invention, in the first aspect of the invention, the seat cushion of the driver's seat is movably attached to the vehicle body, and piping work to the brake fluid pressure adjusting device is provided on the vehicle body floor below the seat cushion. It is characterized in that an opening that enables the above is formed.

  A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the brake fluid pressure adjusting device is arranged such that a pipe connecting portion thereof is directed toward the center side in the vehicle width direction.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the brake fluid pressure adjusting device is attached to the vehicle body frame via the attachment bracket, and the attachment bracket is attached to the vehicle body frame in advance. A first bracket to be attached and a second bracket to which the brake fluid pressure adjusting device is previously attached are configured, and the second bracket is fastened to the upper portion of the first bracket from the center in the vehicle width direction toward the outside. It is characterized by being fixed.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the brake fluid pressure adjusting device includes an ABS actuator, a hill hold valve, and a fluid pressure sensor, and the hill hold valve Is arranged on the center side in the vehicle width direction of the ABS actuator, and the hill hold valve is attached so that the pipe connection portion faces the center side in the vehicle width direction.

  According to the first aspect of the present invention, the brake fluid pressure adjusting device can be disposed at a relatively high position where it does not receive flying water or flying stones, and the mounting bracket for mounting the brake fluid pressure adjusting device to the vehicle body frame. It is not necessary to enlarge the bottom surface of the mounting bracket so that the mounting bracket has a function of protecting against flying water or flying stone, and the mounting bracket can be reduced in size. Further, since the brake fluid pressure adjusting device is arranged on the vehicle body frame, a mounting structure with high support rigidity can be realized by a small and simple mounting bracket.

  According to the second aspect of the present invention, if the seat cushion of the driver's seat is moved, the opening portion opens in the vehicle body floor below the seat cushion. Therefore, not only from the lower side of the vehicle body floor but also through the opening portion. Piping and maintenance from the upper side (vehicle interior side) to the brake fluid pressure adjusting device can be easily performed with good workability. Further, since the opening of the vehicle body floor is normally closed by a seat cushion (when piping and maintenance are not performed on the brake fluid pressure adjusting device), a lid member that covers this opening is not necessary.

  According to the third aspect of the present invention, since the brake fluid pressure adjusting device is arranged so that the pipe connecting portion faces the center side in the vehicle width direction, the brake piping for the brake fluid pressure adjusting device whose front and rear and outer sides are covered by the floor panel is provided. Can be connected with good workability from the center in the vehicle width direction (inner side).

  According to the fourth aspect of the present invention, the mounting bracket for mounting the brake fluid pressure adjusting device to the vehicle body frame, the first bracket attached in advance to the vehicle body frame, and the second bracket attached in advance to the brake fluid pressure adjusting device. And the second bracket is fastened and fixed to the upper portion of the first bracket from the center in the vehicle width direction toward the outside, so that the first and second brackets are located at positions avoiding the ABS actuator in plan view. Therefore, it is possible to arrange the tightening / fixing portion at a position overlapping the ABS actuator in a plan view, thereby reducing the size and weight of the mounting bracket. Further, the second bracket can be easily attached to the first bracket from the center in the vehicle width direction toward the outside with good workability.

  According to the fifth aspect of the present invention, the ABS actuator, the hill hold valve, and the hydraulic pressure sensor that constitute the brake hydraulic pressure adjusting device are assembled and attached to one mounting bracket. The mounting bracket mounting man-hours are reduced compared to the conventional configuration in which each pressure sensor is mounted by a separate bracket, and the length of the brake piping connected to the ABS actuator, the hill hold valve, and the hydraulic pressure sensor is shortened. The For this reason, while being able to achieve weight reduction and cost reduction, the installation space of an ABS actuator, a hill hold valve, and a hydraulic pressure sensor can be reduced.

  In addition, the hill hold valve is arranged at the center side in the vehicle width direction of the ABS actuator, and the hill hold valve and the ABS actuator are arranged in the vehicle width direction because the hill hold valve is mounted so that the pipe connection portion faces the center side in the vehicle width direction. In addition, the brake pipe can be connected to the hill hold valve from the center side in the vehicle width direction with good workability.

It is a perspective view which shows the structure of the brake piping system of a vehicle. It is a fracture side view under the driver's seat of vehicles showing the arrangement structure of the brake fluid pressure adjusting device concerning the present invention. It is the top view which looked at the brake hydraulic pressure adjustment apparatus from the opening part opened to the vehicle body floor of a vehicle. It is a perspective view of a mounting bracket. It is a perspective view of the 1st bracket of a mounting bracket. It is a top view of the 1st bracket of a mounting bracket. It is a figure of the arrow A direction of FIG. It is a figure of the arrow B direction of FIG. It is a perspective view of the 2nd bracket of a mounting bracket. It is a top view of the 2nd bracket of a mounting bracket. It is a figure of the arrow C direction of FIG. It is a figure of the arrow D direction of FIG. It is a figure of the arrow E direction of FIG. It is a figure of the arrow F direction of FIG. It is a disassembled perspective view which shows the attachment structure to the attachment bracket of a brake fluid pressure adjusting device. It is a figure in the arrow G direction of FIG. It is a perspective view which shows the attachment structure to the vehicle body frame of the brake hydraulic pressure adjustment apparatus by an attachment bracket.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a perspective view showing a configuration of a brake piping system of a vehicle, in which 50 is a brake booster that boosts a driver's pedaling force applied to a brake pedal (not shown) using negative pressure. A brake arm of a brake device (not shown) is connected to the rod 50a protruding from the center of the brake booster 50. When the driver depresses the brake pedal provided at the lower end of the brake arm, the rod 50a is pushed and brake fluid pressure is generated in the master cylinder 51, but the driver's pedaling force is the difference between atmospheric pressure and negative pressure. Since the force generated by using the pressure is boosted by the brake booster 50 that operates using the driving source, the physical burden on the driver is reduced.

  In FIG. 1, reference numeral 80 denotes a brake fluid pressure adjusting device, and this brake fluid pressure adjusting device 80 includes an ABS actuator 20, a hill hold valve 30 and a fluid pressure sensor 40, and these ABS actuators 20. The hill hold valve 30 and the hydraulic pressure sensor 40 are attached to the mounting bracket 1.

  Thus, the two brake pipes 52 extending from the master cylinder 51 are connected to the hill hold valve 30 of the brake fluid pressure adjusting device 80, and the two brake pipes 53, 54 extending from the hill hold valve 30. One brake pipe 53 is connected to the ABS actuator 20, and the other brake pipe 54 is connected to the hydraulic pressure sensor 40. Two brake pipes 55 extending from the upper part of the ABS actuator 20 are connected to wheel cylinders (not shown) provided on the left and right front wheels, respectively, and one brake pipe 56 extending from the upper part of the ABS actuator 20 is attached to the mounting bracket. A brake pipe 57 extending from the joint 60 is connected to a wheel cylinder (not shown) provided on each of the left and right rear wheels.

  Here, the arrangement structure of the brake fluid pressure adjusting device 80 on the vehicle body will be described below with reference to FIGS.

  FIG. 2 is a cutaway side view below the driver's seat of the vehicle showing the arrangement structure of the brake fluid pressure adjusting device, and FIG. 3 is a plan view of the brake fluid pressure adjusting device as viewed from an opening opening in the vehicle body floor of the vehicle.

  As shown in FIG. 2, in the vehicle according to the present embodiment, the vehicle body floor 101 below the driver seat 90 bulges upward, and there is a space between the driver seat 90 and the vehicle body frame 100 below the driver seat 90. S is formed. A brake fluid pressure adjusting device 80 is disposed in the space S. In the brake fluid pressure adjusting device 80, the connecting portion of the brake pipe 52 of the hill hold valve 30 is located at the center in the vehicle width direction (see FIG. 2). It is arranged to face the front side. That is, the vehicle body floor 101 below the driver's seat 90 connects the front wall that rises upward behind the driver's feet, the rear wall behind the driver's seat, and the front and rear walls from the vehicle body frame 100. Also, a bulging portion that bulges upward is formed by a side wall disposed on the side of the vehicle, and a space S is formed above the body frame 100. A brake fluid pressure adjusting device 80 is disposed above the vehicle body frame 100 in a space S surrounded by the front wall, the rear wall, the side wall, and the vehicle body frame 100.

  The seat cushion 91 of the driver's seat 90 is attached to the vehicle body so as to be movable in the front-rear direction (the left-right direction in FIGS. 2 and 3), and the vehicle body floor 101 below the seat cushion 91 has a brake hydraulic pressure. An opening 101a that enables connection of the brake pipe 55 to the adjusting device 80 is formed. The seat cushion 91 only needs to be movable so that the opening 101a appears, and the seat cushion 91 may be rotated upward about the front and rear ends of the seat cushion 91.

  Next, the structure of the mounting bracket 1 for mounting the brake fluid pressure adjusting device 80 will be described below with reference to FIGS.

  4 is a perspective view of the mounting bracket, FIG. 5 is a perspective view of the first bracket of the mounting bracket, FIG. 6 is a plan view of the first bracket, FIG. 7 is a view in the direction of arrow A in FIG. 6 is a perspective view of the second bracket of the mounting bracket, FIG. 10 is a plan view of the second bracket, FIG. 11 is a view in the direction C of FIG. 10, and FIG. 10 is a view in the direction of arrow D in FIG. 10, FIG. 13 is a view in the direction of arrow E in FIG. 10, and FIG. 14 is a view in the direction of arrow F in FIG.

  As shown in FIG. 4, the mounting bracket 1 is divided into a first bracket 2 on the lower side and a second bracket 3 on the upper side, and the lower first bracket 2 is connected to the vehicle body frame 100 (FIG. 2). The upper second bracket 3 is fastened and fixed to the upper portion of the first bracket 2. The second bracket 3 is formed with mounting portions to be described later for mounting the ABS actuator 20, the hill hold valve 30, and the hydraulic pressure sensor 40 (see FIG. 1) constituting the brake hydraulic pressure adjusting device 80, respectively. ing.

  Here, the detail of a structure of the 1st bracket 2 is demonstrated based on FIGS. In the description of the mounting bracket 1, the side on which the hill hold valve 30 is disposed is described as the front, and the side on which the ABS actuator 20 is disposed is described as the rear.

  Two mounting seats 2a and one mounting seat 2b are vertically above and below the horizontal and flat mounting surface 2A of the first bracket 2 serving as a mounting surface to the vehicle body frame 100 (inner side and outer side in the vehicle width direction). It is bent vertically and is erected vertically. Then, circular holes 4 are formed in the two mounting seats 2a arranged on the left and right sides of the front side (lower side in FIG. 6), and square nuts 5 are formed around the circular holes 4 on the back surface of each mounting seat 2a. Are welded. Similarly, a circular hole 6 is formed in one mounting seat 2b on the rear side (upper side in FIG. 6), and a square nut 7 is welded around the circular hole 6 on the back surface of the mounting seat 2b. 2b is provided at a substantially central position between the two mounting seats 2a in the left-right direction (vehicle longitudinal direction).

  As shown in FIG. 6, three circular holes 8 are formed in the mounting surface 2A of the first bracket 2 at appropriate intervals in the left-right direction (vehicle longitudinal direction). The mounting surface 2A is formed with beads 2c and 2d for increasing the rigidity.

  Next, the detail of a structure of the 2nd bracket 3 is demonstrated based on FIGS. 9-14.

  The second bracket 3 is formed by welding three members 3A, 3B, and 3C, which are sheet metal press-formed products, and is disposed in front and rear (in the vehicle width direction inside and outside) of the horizontal member 3A as a base member. Mounting seats 3a and 3b that are bent vertically downward are formed. And the long elongate hole 9 is formed in the left-right two attachment seats 3a provided in the front side (front side of FIG. 11) so as to correspond to the two attachment seats 2a of the first bracket 2. A notch 10 is formed in one mounting seat 3b provided in the center in the left-right direction (vehicle longitudinal direction) on the rear side (the back side in FIG. 11). The lower end of one of the mounting seats 3a provided on the front side of the member 3A (the right side in FIGS. 9 and 10) is bent at a right angle to the front side to form a horizontal tongue piece 3c.

  As shown in FIG. 10, large and small diameter circular holes 11 and 12 communicating with each other are formed on the rear end side (vehicle width direction outer side) of the member 3A, and the small diameter circular hole 12 is formed by the ABS. An attachment portion for attaching the actuator 20 (see FIG. 1) is configured. Further, rectangular brackets 3d are formed on the left and right sides of the front end side (the vehicle width direction inner side) of the member 3A so that the surfaces bent upward at a right angle face the left and right directions. Then, left and right rear walls 3i bent at right angles from the rear end of the bracket 3d toward the inner side in the left-right direction are extended, and the rear wall 3i opens upward as shown in FIGS. Notch holes 14 are respectively formed, and these notch holes 14 together with the circular holes 11 and 12 constitute a mounting portion of the ABS actuator 20. The member 3A is formed with beads 3e and 3f for increasing rigidity.

  The member 3B has a front wall 3h which is a surface facing the center side of the vehicle and serves as a mounting portion of the hill hold valve 30 (see FIG. 1), and is a side wall bent rearward from the left and right end edges of the front wall 3h. 3g. The left and right stay-like side walls 3g are overlapped and welded to the bracket 3d formed on the left and right of the member 3A from the outside, so that the member 3B is fixed on the member 3A, and stands vertically. A rectangular opening 13 is formed at the center of the front wall 3h.

  Furthermore, as shown in FIG.9 and FIG.11, the upper end part (upper part of the opening part 13) of the front wall 3h of the member 3B is a mounting part of the hill hold valve 30 (refer FIG. 1), A circular hole 15 for tightening the hill hold valve 30 (see FIG. 1) is formed on one side in the left-right direction (left side in FIG. 11), and the hill hold valve 30 is formed on the opposite side of the upper end in the left-right direction. A pin inserted into the hole for supporting and positioning is projected toward the rear side.

  As shown in FIGS. 10 and 13, a circular hole 16 (see FIG. 13) is formed in the side wall 3g of one side (right side of FIG. 10) of the member 3B, and the circular hole 16 on the inner surface of the side wall 3g is formed. A square nut 17 is welded around. The circular hole 16 and the square nut 17 provided in the side wall 3g constitute an attachment portion of the hydraulic pressure sensor 40 (see FIG. 1) (specifically, an attachment portion of a joint 41 to which the hydraulic pressure sensor 40 is attached). Yes.

  The member 3C has a vertical wall 3j whose surface faces in the left-right direction, and a tongue piece 3k formed by being bent at a right angle from the lower end of the vertical wall 3j in the left-right direction. 3j is superimposed on one side wall 3g of the member 3B from the outside in the left-right direction and spot-welded, and a tongue piece 3k formed by bending the lower end of the vertical wall 3j at a right angle is the tongue piece of the member 3A. 3c is spot-welded by overlapping from below. The member 3C is fixed to each side of the member 3A and the member 3B, whereby the rigidity of each member is enhanced. A circular hole 18 is formed in the vertical wall 3j of the member 3C, and a square nut 19 is welded around the circular hole 18 on the inner surface of the vertical wall 3j. Note that the circular hole 18 and the square nut 19 provided in the vertical wall 3j constitute a mounting portion of a joint 60 described later.

  Thus, the brake hydraulic pressure adjusting device 80 constituted by the ABS actuator 20, the hill hold valve 30 and the hydraulic pressure sensor 40 is attached to the vehicle body frame 100 via the mounting bracket 1 configured as described above. The mounting structure will be described below with reference to FIGS.

  15 is an exploded perspective view showing a structure for mounting the brake fluid pressure adjusting device to the mounting bracket, FIG. 16 is a view in the direction of arrow G in FIG. 15, and FIG. It is a perspective view which shows an attachment structure.

  When the ABS actuator 20, the hill hold valve 30, and the hydraulic pressure sensor 40 constituting the brake hydraulic pressure adjusting device 80 are attached to the vehicle body frame 100, they are attached to the mounting bracket 1.

  That is, as shown in FIG. 15, the lower portion of the ABS actuator 20 is attached to the second bracket 3 of the mounting bracket 1 by the rubber mount 21, the spacer 22, and the bolt 23 inserted from below. Specifically, after the rubber mount 21 is passed through the large diameter circular hole 11 formed in the second bracket 3 (member 3A) of the mounting bracket 1, it is fitted into the small diameter circular hole 12, and the rubber mount The ABS 23 is inserted into the spacer 22 inserted into the spacer 21 from below and the bolt 23 is screwed into a screw hole (not shown) formed on the lower surface of the ABS actuator 20 placed on the second bracket 3. The lower part of 20 is attached to the second bracket 3 via the rubber mount 21.

  The front surface of the ABS actuator 20 placed on the second bracket 3 is disposed behind the rear wall 3i of the member 3B, and is fitted into the notch holes 14 formed in the left and right rear walls 3i. The bolts 26 are respectively passed through the rubber mount 24 and the spacer 25 inserted therein, and each bolt 26 is screwed into a screw hole 27 (only one is shown in FIG. 15) formed at the left and right of the front lower portion of the ABS actuator 20. Accordingly, the second bracket 3 is attached via the rubber mount 24.

  The hill hold valve 30 is disposed between the front side of the ABS actuator 20 (inner side in the vehicle width direction) and the front wall 3h of the second bracket 3 (member 3B). Is formed, and a through hole is formed on the opposite side. Below it, two left and right pipe connection parts 32 are formed facing the same direction (front), and a coupler 33 is provided projecting in the same direction as the pipe connection part 32 at the lower end of the front surface below. The hill hold valve 30 has a front surface applied to the front wall 3h of the second bracket 3 (member 3B) from the rear side (inside), and receives a pin protruding from the front wall 3h into the through hole. The screw hole 31 formed in this is aligned with the circular hole 15 formed in the front wall 3h of the second bracket 3, and the bolt 34 inserted into the circular hole 15 is screwed into the screw hole 31 to be attached to the second bracket 3. . Thus, when the hill hold valve 30 is attached to the second bracket 3 of the mounting bracket 1, the pipe connection portion 32 and the coupler 33 provided on the front surface of the hill hold valve 30 are, as shown in FIG. 2 exposed from the opening 13 of the bracket 3 toward the front (in the vehicle width direction). That is, the pipe connection portion 32 and the coupler 33 protrude forward (inward in the vehicle width direction) from the surface of the front wall 3h.

  Further, as shown in FIG. 16, a joint 41 is attached to the side wall 3 g of the member 3 </ b> B of the second bracket 3 by a bolt 42. That is, a mounting hole 43 and a circular hole 44 are formed in the joint 42, and the joint 41 has a circular hole 16 formed in the side wall 3 g of the second bracket 3 (member 3 </ b> B) with a bolt 42 inserted through the circular hole 44. Is attached to the second bracket 3 (member 3B) by screwing the bolt 42 into the square nut 17 welded to the back side thereof. The hydraulic pressure sensor 40 is attached to the second bracket 3 via the joint 41 by screwing the hydraulic pressure sensor 40 into the attachment hole 43 of the joint 41 from the inner side in the vehicle width direction.

  Further, as shown in FIG. 16, a joint 60 to which a brake pipe 57 to the left and right rear wheel cylinders is connected is attached to the lower portion of the second bracket 3 by bolts 61. That is, a circular hole 62 is formed in the joint 60, and the joint 60 is welded to the back side of the bolt 61 inserted through the circular hole 62 through the circular hole 18 formed in the member 3 </ b> C of the second bracket 3. The bolt 61 is screwed into the square nut 19 and attached to the second bracket 3 (member 3C) (see FIG. 15).

  When the ABS actuator 20, the hill hold valve 30 and the hydraulic pressure sensor 40 are attached to the second bracket 3 as described above, the hill hold valve 30 and the ABS actuator 20 are connected by the brake pipe 53, and the hill hold valve 30 and the liquid pressure sensor 40 are connected. The pressure sensor 40 is connected by the brake pipe 54, and the brake pipe 56 extending from the ABS actuator 20 is connected to the joint 60.

  As described above, the ABS actuator 20, the hill hold valve 30, and the hydraulic pressure sensor 40 are attached to the second bracket 3, and the hill hold valve 30 and the ABS actuator 20, the hill hold valve 30, the hydraulic pressure sensor 40, and the ABS actuator 20 When the joint 60 is connected by the brake pipes 53, 54, and 56 and these are partly assembled to the second bracket 3, the second bracket 3 is placed on the upper part of the first bracket 2 that is attached in advance to the vehicle body frame 100. It is attached.

  That is, as shown in FIG. 17, the first bracket 2 has the front side (the side on which the two mounting seats 2a are formed) the center in the vehicle width direction (inner side), and the two mounting seats 2a are in the center in the vehicle width direction (inner side). 15), the bolts 35 inserted from above into the three circular holes 8 (see FIG. 6) formed therein are screwed into the vehicle body frame 100, as shown in FIG. Mounted on the body frame 100. In other words, the first bracket 2 has the mounting seat 2b located above the vehicle body frame 100 in the space S surrounded by the front wall, the rear wall, the side wall, and the vehicle body frame 100 of the vehicle body floor 101 below the driver seat 90. It is fixed on the side.

  Next, the second bracket 3 to which the ABS actuator 20, the hill hold valve 30 and the hydraulic pressure sensor 40 are attached in advance is overlaid on the first bracket 1. At this time, the second bracket 3 is installed so that the pipe connection portion 32 and the coupler 33 provided on the front surface of the hill hold valve 20 face the center (inner side) in the vehicle width direction, and the front mounting seat 3a and the rear center. Are mounted on the front left and right mounting seats 2a and the rear center mounting seat 2b from the center of the vehicle.

  The first bracket 2 and the second bracket 3 overlapped with each other are formed in the circular holes 4 and long holes 9 formed in the front mounting seats 2a and 3a, respectively, and the rear mounting seats 2b and 3b. A bolt 36 is passed through the circular hole 6 and the cutout hole 10 from the center side (inner side) in the vehicle width direction to the outer side, and each bolt 36 is welded to the back surface of the mounting seats 2a, 2b of the first bracket 2. The second bracket 3 is fastened and fixed to the upper portion of the first bracket 2 by being screwed into the first bracket 2 and the second bracket 7, respectively. At this time, the bolt 36 is attached to the mounting seat 2b of the first bracket 2 in advance, and the mounting seat 3b is inserted between the mounting seat 2b and the head of the bolt 36 using the notch hole 10 and assembled. Adhesiveness can be improved. Further, by using the space between the first bracket 2 and the second bracket 3 (vertical space), it is possible to perform a tightening operation for fixing the rear mounting seats 2b and 3b.

  FIG. 17 shows the ABS actuator 20, the hill hold valve 30, and the hydraulic pressure sensor 40 previously attached to the second bracket 3 by attaching the second bracket 3 to the upper portion of the first bracket 2 as described above. In this way, it is attached to the vehicle body frame 100 via the ABS actuator mounting bracket 1. At this time, since the pipe connection portion 32 and the coupler 33 provided on the front surface of the hill hold valve 30 are exposed from the opening 13 of the second bracket 3 toward the inside in the vehicle width direction, the master cylinder 51 shown in FIG. The two brake pipes 52 extending from the two can be connected to the two pipe connection parts 32 of the hill hold valve 30 from the inside in the vehicle width direction, and the connector 71 attached to the end of the harness 70 is connected to the coupler 33. It can be connected by fitting from the inner side in the width direction. Further, a brake pipe 57 connected to a wheel cylinder (not shown) provided on the rear wheel is connected to the joint 60 from the inner side in the vehicle width direction.

  Further, if the seat cushion 91 of the driver's seat 90 is moved in the vehicle front-rear direction or the like, the opening formed in the vehicle body floor 101 opens as shown in FIG. 3, so that a wheel cylinder (not shown) provided on the front wheel is provided. It is possible to connect the two brake pipes 55 connected to the upper part of the ABS actuator 20 with good workability from above.

  As described above, in the present embodiment, the brake fluid pressure adjusting device 80 can be disposed in the space S formed at a relatively high position that is not subject to flying water, flying stones, or the like. It is not necessary to enlarge the bottom surface of the mounting bracket 1 for mounting on the vehicle body frame 100 to provide the mounting bracket 1 with a function of protecting against flying water and flying stones, and the mounting bracket 1 can be downsized. Since the brake fluid pressure adjusting device 80 is arranged on the vehicle body frame 100, a small and simple mounting bracket 1 can realize a mounting structure with high support rigidity.

  Further, in the present embodiment, if the seat cushion 91 of the driver's seat 90 is moved, the opening 101a opens in the vehicle body floor 101 below the seat cushion 91. Therefore, not only from the lower side of the vehicle body floor 101 but also the opening. The connection and maintenance of the brake pipe 55 to the ABS actuator 20 of the brake fluid pressure adjusting device 80 can be easily performed with good workability from the upper side (vehicle interior side) via the portion 101a. Since the opening 101a of the vehicle body floor 101 is normally closed by the seat cushion 91 (when piping or maintenance is not performed on the brake fluid pressure adjusting device 80), a lid member that covers the opening 101a is provided. It becomes unnecessary.

  Furthermore, in the present embodiment, the brake fluid pressure adjusting device 80 is arranged so that the pipe connecting portion 32 of the hill hold valve 30 faces the center in the vehicle width direction, so that the front and rear and the outer side are floor panels when mounted on the vehicle. The brake pipe 52 can be connected to the hill hold valve 30 of the brake fluid pressure adjusting device 80 covered by the vehicle from the center side (inner side) in the vehicle width direction with good workability.

  In the present embodiment, the mounting bracket 1 for attaching the brake fluid pressure adjusting device 80 to the vehicle body frame 100, the first bracket 2 attached in advance to the vehicle body frame 100, and the brake fluid pressure adjusting device 80 are attached in advance. Since the second bracket 3 is configured to be fastened and fixed to the upper portion of the first bracket 2 from the center in the vehicle width direction to the outer side, the ABS actuator 20 is avoided in plan view. It is not necessary to arrange the fastening fixing portions of the first bracket 2 and the second bracket 3 at the positions, and the fastening fixing portions can be arranged at positions that overlap the ABS actuator 20 in plan view. The size and weight can be reduced. The second bracket 3 can be easily attached to the first bracket 1 with good workability from the center in the vehicle width direction toward the outside.

  In addition, in the present embodiment, the ABS actuator 20, the hill hold valve 30, and the hydraulic pressure sensor 40 that constitute the brake fluid pressure adjusting device 80 are attached to one mounting bracket 1 so that the ABS actuator 20 and the hill are mounted. Compared to the conventional configuration in which the hold valve 30 and the hydraulic pressure sensor 40 are respectively attached by separate brackets, the number of mounting steps of the mounting bracket 1 is reduced, and the ABS actuator 20, the hill hold valve 30 and the hydraulic pressure sensor 40 are respectively connected. The lengths of the brake pipes 52 to 56 are shortened. For this reason, while being able to achieve weight reduction and cost reduction, the installation space of the ABS actuator 20, the hill hold valve 30, and the hydraulic pressure sensor 40 can be reduced.

  Further, in the present embodiment, the hill hold valve 30 is arranged on the center side in the vehicle width direction of the ABS actuator 20, and the hill hold valve 30 is attached so that the pipe connection portion 32 faces the center side in the vehicle width direction. The hill hold valve 30 and the ABS actuator 20 can be compactly arranged in the vehicle width direction, and the brake pipe 52 can be connected to the hill hold valve 30 from the center side in the vehicle width direction with good workability.

DESCRIPTION OF SYMBOLS 1 Mounting bracket 2 1st bracket 3 2nd bracket 20 ABS actuator 30 Hill hold valve 32 Piping connection part of Hill hold valve 40 Fluid pressure sensor 41 Joint 50 Brake booster 52-57 Brake piping 60 Joint 80 Brake fluid pressure adjusting device 90 Operation Seat 91 Driver's seat cushion 100 Body frame 101 Body floor 101a Body floor opening S space

Claims (5)

An arrangement structure of a brake fluid pressure adjusting device for adjusting a brake fluid pressure of a vehicle,
Brake fluid pressure, wherein a vehicle body floor below the driver seat is bulged upward to form a space between the driver seat and the vehicle body frame below the driver seat, and the brake fluid pressure adjusting device is disposed in the space. Arrangement structure of adjusting device.   The seat cushion of the driver's seat is movably attached to the vehicle body, and an opening for enabling piping work to the brake fluid pressure adjusting device is formed in the vehicle body floor below the seat cushion. The arrangement structure of the brake fluid pressure adjusting device according to 1.   The arrangement structure of the brake hydraulic pressure adjusting device according to claim 1 or 2, wherein the brake hydraulic pressure adjusting device is arranged so that a pipe connection portion thereof is directed to a center side in a vehicle width direction.   The brake fluid pressure adjusting device is attached to the vehicle body frame via a mounting bracket, the mounting bracket is attached in advance to the vehicle body frame, and the second bracket is attached in advance to the brake fluid pressure adjusting device. 4. The second bracket according to claim 1, wherein the second bracket is fastened and fixed to the upper portion of the first bracket from the center in the vehicle width direction toward the outer side. Arrangement structure of brake fluid pressure adjusting device. The brake hydraulic pressure adjusting device includes an ABS actuator, a hill hold valve, and a hydraulic pressure sensor. The hill hold valve is disposed on the vehicle width direction center side of the ABS actuator, and the hill hold valve is connected to the piping. The brake fluid pressure adjusting device arrangement structure according to any one of claims 1 to 4, wherein the connecting portion is attached so as to face the center in the vehicle width direction.

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