JP2010242821A - Brake caliper mounting structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a brake caliper mounting structure of a vehicle, capable of facilitating the shortening and distribution of the parking brake cable, preventing the brake caliper from being damaged and enhancing the cooling performance for cooling the disc brake. <P>SOLUTION: As the brake caliper mounting structure of a vehicle, there is employed a construction in which a trailing-arm mounting arm portion 3B is projected forwardly of the vehicle from the axle 2 of a knuckle 3, an arm mount 3C is formed at the leading end of the trailing-arm mounting arm portion 3B, the one end of a trailing arm 18 is placed at the center in the vehicle widthwise direction of the trailing-arm mounting arm portion 3B and fixed to the arm mount 3C, a caliper mount 3D to which a brake caliper 9 is mounted is formed on the base of the trailing-arm mounting arm portion 3C of the knuckle 3, and the brake caliper 9 is put on the caliper mount 3D from the outside in the widthwise direction of the vehicle and is mounted thereto. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a structure for attaching a brake caliper to a knuckle provided in a trailing arm suspension of a vehicle.

  In vehicles that use a trailing arm type suspension, a configuration in which one end of the trailing arm and a brake caliper of a disc brake are attached to a knuckle that rotatably supports the axle is adopted. In order to prevent breakage caused by flying stones, etc., it was placed behind and above the knuckle.

  However, if the brake caliper is arranged behind or above the knuckle as described above, the length of the parking brake cable extending from the driver's seat becomes longer, and it is necessary to route the parking brake cable around the axle. There was a problem that the routing was complicated.

  Therefore, for example, Patent Document 1 proposes a configuration in which the brake caliper is attached to the trailing arm with an offset in the vehicle width direction in front of the knuckle axle.

JP 2008-143270 A

  However, when the brake caliper is attached to the front side of the knuckle, there are problems that the caliper is liable to be damaged by flying stones or the like, and that the disc brake including the brake caliper cannot be sufficiently cooled by the running wind.

  The present invention has been made in view of the above-mentioned problems, and its objectives are to shorten the parking brake cable and facilitate wiring, to prevent damage to the brake caliper, and to improve the cooling performance of the disc brake. An object of the present invention is to provide a vehicle brake cap mounting structure that can be used.

In order to achieve the above object, an invention according to claim 1 is directed to a vehicle in which a brake caliper of a disc brake is attached to a knuckle having a main body portion that rotatably supports an axle and an arm attachment portion to which one end of a trailing arm is attached. Brake caliper mounting structure
A trailing arm mounting arm portion projects forward from the axle of the knuckle toward the front of the vehicle, and the arm mounting portion is formed at the tip of the trailing arm mounting arm portion. One end of the trailing arm is arranged and fixed on the center side in the vehicle width direction with respect to the trailing arm mounting arm portion, and
A caliper attachment portion for attaching the brake caliper is formed at a base portion of the trailing arm attachment arm portion of the knuckle, and the brake caliper is attached to the caliper attachment portion from the outside in the vehicle width direction.

  According to a second aspect of the present invention, in the first aspect of the present invention, the parking brake cable extending from the brake caliper is routed and fixed to the center side in the vehicle width direction of the trailing arm. Brake caliper mounting structure for vehicles.

  A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the trailing arm mounting arm portion of the knuckle is disposed below the brake caliper.

  According to the first aspect of the present invention, the caliper mounting portion is formed at the base portion of the trailing arm mounting arm portion formed in front of the vehicle relative to the axle of the knuckle, and the brake caliper is mounted on the caliper mounting portion. Can be arranged in front of the vehicle with respect to the axle, facilitating the routing of the parking brake cable extending from the brake caliper, and shortening the length of the parking brake cable. Since the brake caliper is attached to the base portion of the trailing arm attachment arm portion of the knuckle, the rigidity of the base portion of the trailing arm attachment arm portion is enhanced by the brake caliper.

  In addition, one end of the trailing arm is attached to the tip of the trailing arm attachment arm of the knuckle, and the brake caliper is attached to the base of the trailing arm attachment arm, so the brake caliper can be attached and removed without providing a working hole in the trailing arm. It is possible to prevent the trailing arm from being lowered in rigidity by providing the working hole.

  Furthermore, since the brake caliper, the knuckle trailing arm mounting arm, and the trailing arm are arranged in order from the outside in the vehicle width direction to the inside in the wheel, the brake caliper is effectively protected from flying stones and the like. Damage can be prevented.

  In addition, traveling wind that flows toward the rear of the vehicle along the trailing arm can be guided to the brake caliper side by the knuckle arm mounting portion and the trailing arm mounting arm portion arranged on the brake caliper side of the trailing arm. The disc brake is effectively cooled by the traveling wind, and the temperature rise can be suppressed.

  According to the second aspect of the present invention, the brake caliper is attached to the caliper attaching portion formed at the base of the trailing arm attaching arm portion of the knuckle, and the parking brake cable extending from the brake caliper is connected to the center of the trailing arm in the vehicle width direction. Since the parking brake cable can be routed along the inside of the trailing arm, the parking brake cable can be easily routed and protected by the trailing arm. Can do.

  According to the third aspect of the invention, since the trailing arm mounting arm portion of the knuckle is disposed below the brake caliper, the lower portion of the brake caliper can be protected by the trailing arm mounting arm portion.

It is a disassembled perspective view of the trailing arm type suspension principal part. It is the figure which looked at the left rear-wheel part which shows the brake caliper attachment structure which concerns on this invention from the vehicle width direction center side. It is the figure which looked at the left rear-wheel part which shows the brake caliper mounting structure which concerns on this invention from the downward direction.

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

  FIG. 1 is an exploded perspective view of a main part of a trailing arm suspension, FIG. 2 is a view of a left rear wheel portion showing a brake caliper mounting structure according to the present invention as seen from the center side in the vehicle width direction, and FIG. It is the figure which looked at from the bottom.

  The trailing arm type suspension shown in FIG. 1 suspends a rear wheel 1 (see FIGS. 2 and 3) of a vehicle on the vehicle body side, and is a differential (not shown) disposed at the center in the vehicle width direction of the vehicle body. A pair of left and right axles 2 (only one is shown in FIGS. 2 and 3) extending left and right from the apparatus are rotatably supported by a knuckle 3. That is, as shown in FIG. 1, a circular insertion hole 4 is formed in the main body 3 </ b> A that rotatably supports the axle 2 of the knuckle 3, and there are four bolts around the insertion hole 4. An insertion hole 5 is formed. A hub 6 is attached to an end portion of the axle 2 that protrudes outward from the knuckle 3, and the axle 2 is fitted and held in the insertion hole 4 formed in the main body 3 </ b> A of the knuckle 3. 6 is rotatably supported via a bearing (not shown). A cylindrical boss 6a projects from the center of the hub 6, and five bolts 7 project from the boss 6a horizontally outward.

  By the way, the disc brake is configured to include the brake disc 8 and the brake caliper 9, and a circular hole 10 is formed at the center of the brake disc 8 and around it (a portion corresponding to the bolt 7 of the hub 6). Five bolt insertion holes 11 are formed.

  In FIG. 1, a dust cover 13 for covering the 12 brake disc 8 from the inside is also a hub for attaching the dust cover 12 to the knuckle 3. The dust cover 12 has a circular hole shape through which the axle 2 is inserted. An insertion hole 14 is formed, and four bolt insertion holes 15 are formed around it (location corresponding to the bolt insertion hole 5 formed in the knuckle 3). Similarly, a circular hole (not shown) through which the axle 2 is inserted is formed at the center of the hub 13, and four screw holes 16 (only three are shown in FIG. 1) are formed around the hole. Has been. A dust cover 12 and a hub 13 are sequentially stacked on the outer side of the main body 3A of the knuckle 3, and are inserted from the center in the vehicle width direction into bolt insertion holes 5 and 14 formed in the knuckle 3 and the dust cover 12, respectively. The dust cover 12 is attached so as to be sandwiched between the knuckle 3 and the hub 13 by screwing the bolts 17 to be screwed into the screw holes 16 formed in the hub 13.

  Thus, a cylindrical boss 6 a protruding from the hub 6 connected to the axle 2 is fitted from the inside into a circular hole 10 formed at the center of the brake disk 8, and protrudes from the hub 6. The five bolts 7 are passed through the five bolt insertion holes 11 formed in the brake disc 8 from the inside. The five bolts 7 protruding outward from the brake disk 8 are passed through bolt insertion holes (not shown) formed in the wheel 1A of the rear wheel 1 shown in FIGS. The brake disc 8 and the rear wheel 1 are attached to the hub 6 by tightening a nut (not shown) that is screwed to the end of the hub 6. The rear wheel 1 is configured by fitting a rubber tire 1B around the outer periphery of the wheel 1A.

  On the other hand, a trailing arm mounting arm portion 3B is integrally projected toward the front of the vehicle from the axle 2 of the knuckle 3, and an arm mounting portion is provided at the tip of the trailing arm mounting arm portion 3B. 3C is formed. Bosses 3a and 3b are formed above and below the arm attachment portion 3C, and screw holes (not shown) are formed in the bosses 3a and 3b, respectively.

  By the way, a trailing arm 18 is arranged in the vehicle front-rear direction on the center side (inside) in the vehicle width direction with respect to the trailing arm mounting arm portion 3B of the knuckle 3, and the front end of the trailing arm 18 is supported by a shaft 19. It is pivotally supported on the vehicle body side so as to be rotatable. The trailing end of the trailing arm 18 is overlapped with the arm attachment portion 3C of the knuckle 3 from the inside, and is attached to the arm by a bolt 20 screwed into the screw holes formed in the bosses 3a and 3b of the arm attachment portion 3C from the inside. It is attached to the inner surface of the part 3C.

  As shown in FIG. 1, support brackets 3c, 3d, and 3e are integrally formed on the top and bottom of the main body 3A of the knuckle 3 and on the bottom of the trailing arm attachment arm 3B, respectively. The other ends of the suspension arms 21, 22, and 23, which are pivotally supported at one end on the vehicle body (suspension frame), are pivotally connected to .about.3e. The suspension arm 22 is further suspended from the vehicle body via a rear cushion (shock absorber) 24.

  A caliper mounting portion 3D for mounting the brake caliper 9 is formed at the base of the trailing arm mounting arm portion 3B of the knuckle 3, and bosses 3f and 3g are formed above and below the caliper mounting portion 3D. Bolt insertion holes 25 (see FIG. 1) are respectively formed in the bosses 3f and 3g. Although not shown, the brake caliper 9 incorporates a brake pad that sandwiches the brake disk 8 from both sides to generate a required braking force, and a master cylinder that drives the brake pad hydraulically. As shown in FIGS. 2 and 3, a parking brake cable 26 for driving the master cylinder extends from the brake caliper 9 so as to generate a required braking force during parking.

  Thus, the brake caliper 9 is attached to the caliper attachment portion 3D by the bolts 27 inserted from the inside into the bolt insertion holes 25 formed in the bosses 3f and 3g of the caliper attachment portion 3D of the knuckle 3. Here, as shown in FIG. 2, the trailing arm attachment arm 3 </ b> B of the knuckle 3 to which the rear end of the trailing arm 18 is attached is disposed below the brake caliper 9. The parking brake cable 26 extending from the brake caliper 9 is routed along the center side (inner side) in the vehicle width direction of the trailing arm 18 as shown in FIG. It is fixed to the trailing arm 18.

  Here, as shown in FIG. 2, the brake caliper 9 is arranged at a position where the lower part of the brake caliper 9 overlaps the trailing arm attachment arm 3 </ b> B of the knuckle 3 in the side view of the vehicle, and the lower part of the brake caliper 9 is attached to the trailing arm. It is arranged in the internal space of the wheel 1A that is on the vehicle outer side than the arm portion 3B. Further, the trailing arm mounting arm 3B is disposed at a position overlapping the wheel 1A of the rear wheel 1, and can thereby be disposed in the internal space of the wheel 1A, so that the trailing arm mounting arm 3B of the knuckle 3 is provided. And the rear wheel 1 can be avoided, the trailing arm 18 can be disposed near the rear wheel 1, and the brake caliper 9 can be protected by reducing the opening in front of the vehicle.

  Further, as shown in FIG. 2, the brake caliper 9 has a lower end portion disposed in the range of the height of the trailing arm 18 in the vertical direction.

  By the way, the main body 3A of the knuckle 3 that rotatably supports the axle 2 is disposed in the internal space of the wheel 1A of the rear wheel 1 as shown in FIG. Further, the trailing arm mounting arm portion 3B of the knuckle 3 is obliquely forward from the main body portion 3A of the knuckle 3 toward the vehicle width direction center side (inside) until the tip arm mounting portion 3C is arranged outside the wheel 1A. It extends to. A trailing arm 18 and a brake caliper 9 are disposed on both sides of the trailing arm attachment arm 3B. Specifically, the trailing arm 18 is disposed on the center side (inside) in the vehicle width direction of the trailing arm attachment arm 3B, and the brake caliper 9 is disposed on the outside in the vehicle width direction of the trailing arm attachment arm 3B. Yes.

  In the above description, the trailing arm suspension for suspending one rear wheel 1 on the vehicle body and the mounting structure of the brake caliper 9 of the disc brake provided on the trailing arm have been described. Since the structure for mounting the brake caliper of the disc suspension and the disc brake provided on the suspension has the same configuration, illustration and description thereof are omitted.

  In the above, according to the mounting structure of the brake caliper 9 according to the present invention, the caliper mounting portion 3D is formed at the base portion of the trailing arm mounting arm portion 3B formed in front of the vehicle with respect to the axle 2 of the knuckle 3, and the caliper Since the brake caliper 9 is attached to the attachment portion 3D, the brake caliper 9 can be arranged in front of the vehicle with respect to the axle 2. The parking brake cable 26 extending from the brake caliper 9 can be easily routed, and the parking brake cable The length of 26 can be shortened. Since the brake caliper 9 is attached to the base of the trailing arm attachment arm 3B of the knuckle 3, the brake caliper 9 increases the rigidity of the base of the trailing arm attachment arm 3B. In particular, in the present embodiment, the brake caliper 9 is fixed to the knuckle 3 by bolts 27 at two locations, the lower side being fixed to the boss 3g formed at the base of the trailing arm mounting arm 3B, and the upper side Is fixed to a boss 3f provided at the base of the support bracket 3c for supporting the suspension arm 21, so that the mounting rigidity of the brake caliper 9 is enhanced and the trailing arm mounting arm 3B is connected via the brake caliper 9. The trailing arm attachment arm 3B can be reinforced by connecting the arm attachment 3C.

  Since one end of the trailing arm 18 is attached to the tip of the trailing arm attachment arm 3B of the knuckle 3, and the brake caliper 9 is attached to the base of the trailing arm attachment arm 3B, a working hole is provided in the trailing arm 18. The brake caliper 9 can be attached and detached without any problem, and the rigidity of the trailing arm 18 can be prevented from being lowered due to the provision of the working hole.

  Further, as shown in FIG. 3, the brake caliper 9 is disposed in the internal space of the wheel 1 </ b> A of the rear wheel 1, and the vehicle width direction outer side and the vehicle front-rear direction are surrounded by the wheel 1 </ b> A of the rear wheel 1. In the wheel 1A, the brake caliper 9, the trailing arm mounting arm portion 3B of the knuckle 3 and the trailing arm 18 are arranged in order from the outer side to the inner side in the vehicle width direction. Can be protected to prevent damage. In the present embodiment, since the trailing arm mounting arm 3B of the knuckle 3 is disposed below the brake caliper 9, the trailing arm mounting arm 3B can protect the lower side of the brake caliper 9.

  Further, the traveling wind flowing toward the rear of the vehicle along the trailing arm 18 causes the brake caliper 9 side by the arm mounting portion 3C and the trailing arm mounting arm portion 3B of the knuckle 3 disposed on the brake caliper 9 side of the trailing arm 18. The traveling wind can effectively cool the disc brake and suppress the temperature rise. A guide portion for guiding the traveling wind toward the brake caliper 9 may be formed on the trailing arm 18.

  In the present embodiment, the brake caliper 9 is attached to the caliper attachment portion 3D formed at the base of the trailing arm attachment arm portion 3B of the knuckle 3, and the parking brake cable 26 extending from the brake caliper 9 is attached to the trailing arm 18. Since the parking brake cable 26 can be routed along the inside of the trailing arm 18, the parking brake cable 26 can be easily routed and the trailing arm can be routed. The parking brake cable 26 can be protected by 18.

1 Rear Wheel 1A Rear Wheel 1B Rear Wheel Tire 2 Axle 3 Knuckle 3A Knuckle Body 3B Knuckle Trailing Arm Mounting Arm 3C Knuckle Arm Mounting 3D Knuckle Caliper Mounting 3a, 3b Knuckle Boss 3c -3e Knuckle support bracket 3f, 3g Knuckle boss 4 Knuckle insertion hole 5 Knuckle bolt insertion hole 6 Hub 6a Hub boss 7 Bolt 8 Brake disc 9 Brake caliper 10 Brake disc circular hole 11 Brake disc bolt insertion hole 12 Dust Cover 13 Hub 14 Dust Cover Insertion Hole 15 Dust Cover Bolt Insertion Hole 16 Hub Screw Hole 17 Bolt 18 Trailing Arm 19 Axis 20 Bolt 21-23 Suspension Arm 24 Rear Cushion 25 Boss Bolt Insertion holes 26 parking brake cable 27 bolt 28 clamps

Claims (3)

A brake caliper mounting structure for a vehicle in which a brake caliper for a disc brake is attached to a knuckle having an arm mounting portion for mounting a main body portion for rotatably supporting an axle and one end of a trailing arm,
A trailing arm mounting arm portion projects forward from the axle of the knuckle toward the front of the vehicle, and the arm mounting portion is formed at the tip of the trailing arm mounting arm portion. One end of the trailing arm is arranged and fixed on the center side in the vehicle width direction with respect to the trailing arm mounting arm portion, and
A brake caliper mounting for a vehicle, wherein a caliper mounting portion for mounting the brake caliper is formed at a base portion of a trailing arm mounting arm portion of the knuckle, and a brake caliper is mounted on the caliper mounting portion in an overlapping manner from the outside in the vehicle width direction. Construction.   2. The brake caliper mounting structure for a vehicle according to claim 1, wherein a parking brake cable extending from the brake caliper is routed and fixed to a center side in the vehicle width direction of the trailing arm.   The brake caliper mounting structure for a vehicle according to claim 1 or 2, wherein a trailing arm mounting arm portion of the knuckle is disposed below the brake caliper.

Images