JP2013189090A - Vehicle brake device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle brake device which prevents discomfort of a driver or deterioration of operability when a driver's foot collides with a stop lamp switch.SOLUTION: In a vehicle brake device 1, an upper end of a brake pedal 3 is supported pivotally on a pedal bracket 2 attached to a dash panel 20 via a pedal shaft 4 so as to be rotated, a brake booster 5 that reduces a pressing force to the brake pedal 3 is placed in a cabin S2, and a stop lamp switch 10 is fitted to the pedal bracket 2, the stop lamp switch 10 detecting pressing the brake pedal 3 to turn on a stop lamp. The stop lamp switch 10 is disposed on the back side of the brake booster 5.

Description

  The present invention relates to a vehicle brake device in which a stop lamp switch for detecting a depression operation of a brake pedal and lighting a stop lamp is attached to a pedal bracket.

  As shown in the side view of FIG. 4, the vehicle brake device 101 includes a brake pedal 103 whose upper end is pivotally supported by a pedal shaft 104 on a pedal bracket 102 attached to a dash panel 120. When the driver depresses the brake pedal 103 with his / her foot, a required braking force is generated to stop or decelerate the vehicle. Here, a master cylinder 106 is connected to the brake pedal 103 via a brake booster 105 that is a pedaling force assisting means for reducing the pedaling force of the driver at the time of brake operation. Brake fluid pressure is generated according to the depression amount of the brake pedal 103.

  By the way, in such a brake device 101, a stop lamp switch 110 is attached to the pedal bracket 102 via a fixed bracket 111 (see, for example, Patent Document 1), and the brake is operated when the driver does not perform a brake operation. The pedal 103 is in the position indicated by the solid line in FIG. 4. The pressing member 113 attached to the brake pedal 103 is pressing the stop lamp switch 110 and the stop lamp switch 110 is in the OFF state. The lamp is off.

  Thus, when the driver depresses the brake pedal 103 and the brake pedal 103 rotates about the pedal shaft 104 in the direction of the arrow in FIG. 4 to the position of the broken line, the pressing member 113 attached to the brake pedal 103. Is separated from the stop lamp switch 110 to release the pressing, so that the stop lamp switch 110 is turned on and the stop lamp is lit.

  Regarding the arrangement of the stop lamp switch, for example, Patent Document 2 discloses a configuration in which an operating shaft of the stop lamp switch is inserted into a hole formed in the upper wall of the pedal bracket and the stop lamp switch is attached to the upper surface side of the upper wall of the pedal bracket. Has been proposed.

JP 2003-015756 A JP-A-9-226542

  Incidentally, some vehicles such as trucks and one-box cars have a brake booster 105 and a master cylinder 106 disposed in the passenger compartment S2 as shown in FIG. 4, but the brake device 101 of such a vehicle has a stop. A lamp switch 110 is disposed below the brake booster 105.

  In such a brake device 101, when the length of the brake pedal 103 is long, or when the pedal 103b of the brake pedal 103 is largely offset from the stop lamp switch 110 in the vehicle width direction (perpendicular to the plane of FIG. 4). There is no possibility that the driver's foot hits the stop lamp switch 110.

  However, the stop lamp switch 110 operates the brake pedal 103 when the length of the brake pedal 103 is shortened or the offset amount of the brake pedal 103 in the vehicle width direction is set small for the purpose of downsizing and weight reduction. The driver may approach the driver's foot, and in some cases, the stop lamp switch 110 may hit the driver's foot and give the driver a sense of discomfort.

  SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and a purpose of the present invention is to provide a vehicle brake device that can prevent a driver from feeling uncomfortable and a deterioration in operability due to a driver's foot hitting a stop lamp switch. Is to provide.

  In order to achieve the above object, according to the first aspect of the present invention, the pedal bracket attached to the dash panel is pivotally supported by the pedal shaft so that the upper end portion of the brake pedal can be rotated by the pedal shaft, thereby reducing the pedaling force on the brake pedal. A brake device for a vehicle in which a brake lamp booster is disposed in the vehicle interior, and a stop lamp switch for detecting a depression operation of the brake pedal and lighting a stop lamp is attached to the pedal bracket, wherein the stop lamp switch is connected to the brake booster. It has been arranged on the back side of.

  According to a second aspect of the present invention, in the first aspect of the present invention, the stop lamp switch mounting portion of the pedal bracket is disposed between the pedal shaft of the brake pedal and a booster mounting flange in the vehicle front-rear direction, and the stop An operation lever for turning on / off the stop lamp switch by contacting / separating the lamp switch is attached to the pedal arm of the brake pedal.

  The invention according to claim 3 is the invention according to claim 2, wherein the stop lamp switch mounting portion of the pedal bracket is disposed at a corner where the side wall of the pedal bracket and the booster mounting flange intersect, and the stop lamp switch mounting portion The side wall of the pedal bracket and a booster mounting flange are connected to each other.

  The invention according to claim 4 is the invention according to claim 2 or 3, wherein the pedal provided at the lower end of the pedal arm of the brake pedal is offset in the vehicle width direction with respect to the brake booster, and the pedal bracket is A stop lamp switch mounting portion is provided on a side portion where the pedal is offset.

  According to the first aspect of the present invention, since the stop lamp switch is arranged on the back side of the brake booster, the stop lamp switch can be laid out away from the driver's foot, and the driver's foot hits the stop lamp switch. Therefore, it is possible to prevent the driver from feeling uncomfortable and the deterioration of operability. Further, the stop lamp switch can be arranged in a compact manner while suppressing the protrusion amount of the stop lamp switch from the pedal bracket.

  In addition, the brake lamp switch can be protected by the brake booster, and workability is improved because the stop lamp switch does not protrude when the brake device is mounted on the vehicle body.

  According to the second aspect of the present invention, since the stop lamp switch mounting portion of the pedal bracket is disposed between the pedal shaft of the brake pedal and the booster mounting flange in the vehicle longitudinal direction, the operating range of the stop lamp switch is the same as that of the conventional one. Thus, the conventional stop lamp switch can be used as it is.

  In addition, the operation lever attached to the brake pedal can prevent the driver's foot from entering the stop lamp switch from below, and can effectively protect the brake lamp switch.

  According to the third aspect of the present invention, the stop lamp switch mounting portion of the pedal bracket is disposed at the corner where the side wall of the pedal bracket and the booster mounting flange intersect, and the side wall of the pedal bracket and the booster mounting are installed by the stop lamp switch mounting portion. Since the flange is connected to the flange, the rigidity of the pedal bracket is increased by the stop lamp switch mounting portion.

  According to the fourth aspect of the present invention, since the stop lamp switch mounting portion is provided on the side of the offset side where the stress of the pedal bracket increases when the brake pedal is depressed, the rigidity of the pedal bracket is enhanced and the deformation thereof is prevented. Can be removed.

It is a side view of the brake device for vehicles concerning the present invention. It is a front view of the brake device for vehicles concerning the present invention. It is the perspective view which looked at the pedal bracket of the brake device for vehicles concerning the present invention from the slanting lower part. It is a side view of the conventional vehicle brake device.

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

  FIG. 1 is a side view of a vehicle brake device according to the present invention, FIG. 2 is a front view of the vehicle brake device, and FIG. 3 is a perspective view of a pedal bracket of the vehicle brake device as viewed obliquely from below.

  In the brake device 1 according to the present invention, as shown in FIG. 1, the upper end of the brake pedal 3 is attached to the pedal bracket 2 attached to the dash panel 20 that partitions the engine room S1 and the vehicle compartment S2 of the vehicle. It is pivotally supported by a pedal shaft 4 which is a shaft extending in the direction so as to be rotatable in the vehicle front-rear direction. The brake pedal 3 is configured by binding a pedal 3b to the lower end of the pedal arm 3a.

  A master cylinder 6 is attached to the pedal bracket 2 via a brake booster 5 that is a means for assisting the driver's pedaling force using negative pressure of an engine or the like. The master cylinder 6 generates a brake fluid pressure having a magnitude corresponding to the amount of depression of the brake pedal 3 by the driver. The brake fluid pressure generated in the master cylinder 6 is provided on the front wheels and the rear wheels, respectively. Supplied to a brake (not shown).

  The pedal bracket 2 is a welded structural member formed in a substantially rectangular frame shape by sheet metal, and has left and right side walls 2C that support the pedal shaft 4, and above and below the back side (vehicle front side), Flat mounting brackets 2 </ b> A and 2 </ b> B for mounting the pedestal bracket 2 to the dash panel 20 are formed. The mounting brackets 2A and 2B are bent and joined at right angles toward the inner side so as to approach each other from the surfaces of the left and right side walls 2C, and the left and right side walls 2C are joined at the mounting brackets 2A and 2B. Are combined. As shown in FIG. 1, the pedal bracket 2 is attached to the dash panel 20 by bolts (not shown) that are passed through bolt insertion holes 7 that are formed on each of the upper and lower mounting brackets 2 </ b> A and 2 </ b> B.

  A flat booster is attached to the front side edge (the vehicle rear side edge) of the left and right side walls 2C of the pedal bracket 2 so as to be bent at right angles toward the outside so as to be separated from the surface of the side wall 2C. A flange 2D is formed, and a bolt insertion hole 8 is formed above and below each booster mounting flange 2D. The brake booster 5 and the master cylinder 6 assembled thereto are attached to the booster mounting flange 2D of the pedal bracket 2 by bolts (not shown) that are passed through the bolt insertion holes 8.

  Further, the pedal shaft 4 is horizontally mounted on the left and right side walls 2C of the pedal bracket 2 as shown in FIG. 2, and the upper end portion of the pedal arm 3a of the brake pedal 3 is mounted on the pedal shaft 4. Is pivotally supported. One end of a return spring 9 wound around the outer periphery of the pedal shaft 4 is locked to the upper end of the pedal arm 3a of the brake pedal 3, and the other end of the return spring 9 is one of the pedal brackets 2 (see FIG. 2 on the right side wall 2C. Accordingly, the brake pedal 3 is urged counterclockwise in FIG. 1 about the pedal shaft 4 by the return spring 9, and when the driver does not perform the brake operation to depress the pedal 3 b of the brake pedal 3, Reference numeral 3 denotes a position indicated by a solid line in FIG.

  By the way, in the present embodiment, the pedal arm 3a of the brake pedal 3 has a shaft support portion in the left-right direction of the vehicle as shown in FIG. 2 (the place where the pedal shaft 4 is inserted above the pedal arm 3a). (The position substantially the same as the central position of the brake booster 5) is bent at one end in the vehicle width direction (left side in FIG. 2), and the pedal 3b attached to the lower end is The brake pedal 3 is offset in the left direction as shown in the figure with respect to the shaft support portion.

  Thus, the pedal lamp 2 is provided with a stop lamp switch 10 for detecting a depression operation of the brake pedal 3 and turning on a stop lamp (not shown). In the present embodiment, as shown in FIG. As described above, the stop lamp switch 10 is disposed on the back side (the vehicle front side) of the brake booster 5 at a position hidden by the brake booster 5 when viewed from the rear of the vehicle.

  Here, as shown in FIG. 2, the stop lamp switch 10 is provided on the back side of the booster mounting flange 2D on the side of the pedal bracket 2 where the pedal 3b of the brake pedal 3 is offset (the left side in FIG. 2). Side) along the surface of the side wall 2C and the surface of the mounting flange 2D. More specifically, as shown in FIG. 3, the stop lamp switch 10 is arranged at the corner of the bent portion bent at a right angle between the left side wall 2C of the pedal bracket 2 and the left booster mounting flange 2D. Has been. And, at the place where the stop lamp switch 10 is arranged, a separate mounting seat 11 as a stop lamp switch mounting portion is welded and attached to the side wall 2C and the booster mounting flange 2D. The side wall 2C of the bracket 2 and the booster mounting flange 2D are connected.

  The mounting seat 11 is disposed between the pedal shaft 4 of the pedal bracket 2 and the booster mounting flange 2D as shown in FIG. 1 in the vehicle longitudinal direction, and as shown in FIG. A circular mounting hole 12 is formed. A stop lamp switch 10 is inserted into the mounting hole 12 at its front end, and the stop lamp switch 10 is erected substantially vertically with its front end downward as shown in FIGS. The operating element 10a at the front end of the actuator 10a protrudes downward and freely.

  On the other hand, as shown in FIGS. 1 and 2, an operation lever 13 extending toward the actuator 10 a of the stop lamp switch 10 is attached to the left side surface of the upper end portion of the pedal arm 3 a of the brake pedal 3 near the pedal shaft 4. It has been. As will be described later, this operating lever 13 is for contacting / separating the actuator 10a of the stop lamp switch 10 to press or release the actuator 10a and to turn the stop lamp switch 10 on / off. is there. It should be noted that the stop lamp switch 10 used in the present embodiment is in an OFF state when the operating element 10a is pressed when the brake operation is not performed, and to the operating element 10a when the brake pedal 3 is depressed. The pressure is released and the switch is turned on. This operation is the same as that of the conventional stop lamp switch 110.

  In the brake device 1 configured as described above, the brake pedal 3 is in the solid line position in FIG. 1 when the driver does not perform a brake operation, and the operation lever 13 attached to the brake pedal 3 is moved to the stop lamp switch 10. The stop lamp switch 10 is in the OFF state by pressing the actuator 10a, and the stop lamp (not shown) is turned off.

  Thus, when the driver depresses the brake pedal 3 and the brake pedal 3 rotates about the pedal shaft 4 in the direction of the arrow in FIG. 1 to the broken line position, the operation lever 13 attached to the brake pedal 3 is operated. Is spaced downward from the stop lamp switch 10 to release the pressure on the actuator 10a, so that the stop lamp switch 10 is turned on and a stop lamp (not shown) is lit. When the driver lifts his or her foot from the pedal 3b of the brake pedal 3, the brake pedal 3 is rotated counterclockwise in FIG. 1 about the pedal shaft 4 by the urging force of the return spring 9, and the solid line position in FIG. The operation lever 13 attached thereto contacts the stop lamp switch 10 and pushes the operating element 10a, so that the stop lamp switch 10 is turned off and the stop lamp (not shown) is turned off.

  As described above, in the brake device 1 according to the present invention, since the stop lamp switch 10 is disposed on the back side of the brake booster 5, the stop lamp switch 10 can be laid out at a position away from the driver's foot. It is possible to prevent the driver's foot from hitting the switch 10. Further, the stop lamp switch 10 can be arranged in a compact manner while keeping the amount of protrusion of the stop lamp switch 10 from the pedal bracket 2 small.

  In addition, the brake lamp switch 10 can be protected by the brake booster 5, and workability is improved because the stop lamp switch 10 does not protrude when the brake device 1 is mounted on the vehicle body.

  Furthermore, in the brake device 1 according to the present invention, the actuator 10a is located between the pedal shaft 4 and the booster mounting flange 2D in the vehicle front-rear direction of the pedal bracket 2 with respect to the mounting seat 11 as the stop lamp switch mounting portion. Therefore, the operating range and operating conditions of the stop lamp switch 10 are the same as those of the conventional lamp, and the conventional lamp can be used as it is.

  Further, the operation lever 13 attached to the brake pedal 3 can prevent the driver's foot from entering the stop lamp switch 10 from below, and the brake lamp switch 10 can be effectively protected. .

  In this embodiment, when the brake pedal 3 is depressed, the mounting seat 11 of the pedal bracket 2 is disposed at the corner where the side wall 2C of the pedal bracket 2 and the booster mounting flange 2D intersect, and the pedal bracket 2 is supported by the mounting seat 11. Since the side wall 2C and the booster mounting flange 2D are connected to each other, the mounting bracket 11 increases the rigidity of the pedal bracket 2. In particular, in the present embodiment, since the mounting seat 11 is provided on the side of the offset side where the stress of the pedal bracket 2 is increased when the brake pedal 3 is depressed, the rigidity of the pedal bracket 2 is enhanced and its deformation is prevented. Effect is obtained.

DESCRIPTION OF SYMBOLS 1 Vehicle brake device 2 Pedal bracket 2C Side wall of pedal bracket 2D Booster mounting flange of pedal bracket 3 Brake pedal 3a Pedal arm 3b Pedal 4 Pedal shaft 5 Brake booster 6 Master cylinder 10 Stop lamp switch 11 Mounting seat (stop lamp switch mounting part )
13 Control lever 20 Dash panel

Claims (4)

The brake bracket is mounted on the pedal bracket attached to the dash panel so that the upper end of the brake pedal can be pivoted by the pedal shaft, and a brake booster that reduces the depression force on the brake pedal is disposed in the vehicle interior. In the vehicular brake device in which a stop lamp switch for detecting movement and lighting a stop lamp is attached to the pedal bracket,
A brake device for a vehicle, wherein the stop lamp switch is arranged on the back side of the brake booster.   An operation for disposing the stop lamp switch mounting portion of the pedal bracket between the pedal shaft of the brake pedal and the booster mounting flange in the vehicle front-rear direction and for turning the stop lamp switch on and off by contacting and separating from the stop lamp switch 2. The vehicle brake device according to claim 1, wherein a lever is attached to a pedal arm of the brake pedal.   The stop lamp switch mounting portion of the pedal bracket is disposed at a corner where the side wall of the pedal bracket and the booster mounting flange intersect, and the side wall of the pedal bracket and the booster mounting flange are connected by the stop lamp switch mounting portion. The brake device for vehicles according to claim 2 characterized by things. The pedal provided at the lower end of the pedal arm of the brake pedal is offset in the vehicle width direction with respect to the brake booster, and the stop lamp switch mounting portion of the pedal bracket is set on the side portion where the pedal is offset. The vehicle brake device according to claim 2, wherein the vehicle brake device is provided.

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