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WO2016006581A1 - Dispositif de frein à disque - Google Patents

Dispositif de frein à disque Download PDF

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Publication number
WO2016006581A1
WO2016006581A1 PCT/JP2015/069454 JP2015069454W WO2016006581A1 WO 2016006581 A1 WO2016006581 A1 WO 2016006581A1 JP 2015069454 W JP2015069454 W JP 2015069454W WO 2016006581 A1 WO2016006581 A1 WO 2016006581A1
Authority
WO
WIPO (PCT)
Prior art keywords
outer side
parking
disc brake
piston
caliper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2015/069454
Other languages
English (en)
Japanese (ja)
Inventor
利史 前原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akebono Brake Industry Co Ltd
Original Assignee
Akebono Brake Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Akebono Brake Industry Co Ltd filed Critical Akebono Brake Industry Co Ltd
Publication of WO2016006581A1 publication Critical patent/WO2016006581A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc brakes

Definitions

  • This invention relates to a disc brake device.
  • a disc brake device is used as a brake device to perform service braking not only on the front wheels of an automobile but also on the rear wheels because it has excellent heat dissipation and allows fine adjustment of braking force during driving. May be adopted.
  • a brake device for performing the parking brake is also provided separately from the disc brake device used for the service brake.
  • a drum brake device dedicated to a parking brake is disposed inside a disc brake device dedicated to a service brake (drum-in-hat structure),
  • a structure (a twin caliper structure) is employed in which a disc brake device dedicated to a parking brake is provided separately from a disc brake device dedicated to a service brake.
  • FIG. 20 is a schematic diagram of a conventional structure in which a disc brake device dedicated to service brakes and a disc brake device dedicated to parking brakes are provided separately.
  • an opposed piston type disc brake device 2 used for a service brake and a floating type disc brake device 3 used for a parking brake are provided around the rotor 1 rotating together with the wheels in a circumferentially separated state. It has been.
  • these two brake devices 2 and 3 are each supported and fixed to the knuckle 4 which comprises a suspension apparatus.
  • a caliper 5 constituting the opposed piston type disc brake device 2 is supported and fixed to a mounting portion (stay) 6a provided on the knuckle 4, and the floating disc brake device 3 is constituted.
  • a support 7 is supported and fixed to another mounting portion 6 b provided on the knuckle 4.
  • axial direction”, “radial direction”, and “circumferential direction” refer to “axial direction”, “radial direction”, and “circumferential direction”, respectively, related to the rotor.
  • the opposed piston type disc brake device 2 dedicated to the service brake and the floating type disc brake device 3 dedicated to the parking brake are provided separately. For this reason, when it sees as one brake device provided with two functions, a service brake and a parking brake, it is inevitable that the whole device will be increased in size and weight.
  • the knuckle 4 needs to be provided with mounting portions 6a and 6b for supporting and fixing the brake devices 2 and 3, respectively, the degree of freedom regarding the shape of the knuckle 4 is reduced.
  • the knuckle must be provided with a mounting part for fixing the damper, a mounting part for fixing the lower arm, etc., and ensuring the degree of freedom regarding the shape of the knuckle is a matter of designing the members around the knuckle. It becomes important in securing the degree of freedom.
  • an object of the present invention is to reduce the size and weight of a brake device having two functions of a service brake and a parking brake and improve the degree of freedom of the shape of the suspension device. It is to provide a disc brake device that realizes a possible structure.
  • a disc brake device having the following configurations (1) to (9).
  • An outer body portion and an inner body portion that are provided with a rotor that rotates together with a wheel are connected to both outer circumferential portions of the outer body portion and the inner body portion at positions radially outward from the outer peripheral edge of the rotor.
  • a main body portion including a pair of connecting portions, and a pair (two) or more first cylinder portions provided opposite to the outer body portion and the inner body portion, and both connections constituting the main body portion.
  • a second cylinder part that is open in the circumferential direction from the inner side part of one of the connecting parts, and that is open on both sides in the axial direction, and is fixed to the suspension device across the rotor An opposed piston caliper;
  • Each of the first cylinder parts is fitted in a liquid-tight and axially displaceable manner, and a first piston provided in the same number as each of the first cylinder parts, A second piston fitted in the second cylinder part so as to be capable of displacement along the axial direction; In the state which has a claw part at an outer side end part and a base part at an inner side end part, straddles the second cylinder part from the outside in the radial direction and is adjacent to the main body part along a circumferential direction.
  • a floating caliper supported so as to be axially displaceable with respect to the opposed piston caliper using a piston and at least one sliding pin; At least one pair of service pads supported so as to be able to be displaced along the axial direction with respect to the main body in a state of being disposed on both sides of the rotor; A portion between the outer side surface of the rotor and the inner side surface of the claw, and a pair of parking pads respectively disposed at a portion between the inner side surface of the rotor and the tip surface of the second piston, Of the two parking pads, the inner parking pad disposed between the inner side surface of the rotor and the front end surface of the second piston engages and supports the front end surface of the second piston. And a brake torque applied to the inner parking pad is supported by the second cylinder portion via the second piston.
  • the braking force by the service brake is such that the pressure oil is fed into the first cylinder parts, so that the first pistons are moved from the first cylinder parts. It is generated by being pushed out and pressing each service pad against the side surface of the rotor.
  • the braking force of the parking brake is such that the second piston pushes the parking pad on the inner side of the parking pads against the inner side surface of the rotor, and the floating force by the reaction force accompanying this pressing. This occurs when the mold caliper is displaced toward the inner side with respect to the opposed piston caliper, and the claw portion presses the parking pad on the outer side of the parking pads against the outer side surface of the rotor. That is, in the disc brake device having the above configuration (1), the braking force by the service brake is obtained only by the opposed piston type disc brake mechanism, whereas the braking force by the parking brake is obtained only by the floating type disc brake mechanism. It is done.
  • An outer side auxiliary sliding pin is inserted into a through hole formed in the axial direction with respect to the claw portion, and the outer side surface of the rotor and the inner side surface of the claw portion of the both parking pads.
  • the outer side parking pad disposed in the middle portion is engaged with the inner side end portion of the outer side auxiliary sliding pin, and the outer side end portion of the outer side auxiliary sliding pin is the main body portion.
  • the outer side cover portion provided in a state of projecting in the same direction substantially parallel to the second cylinder portion from the outer side portion of one of the connecting portions constituting the shaft is supported so as to be capable of displacement in the axial direction.
  • the disc brake device described in (1) above wherein a brake torque applied to the outer side parking pad is supported by the outer side cover portion via the outer side auxiliary sliding pin.
  • the outer side auxiliary sliding pin is for assisting the function of the sliding pin described in the above (1), and does not correspond to this sliding pin.
  • the sliding pin is slidably inserted into a guide hole opened on an inner side surface of the main body portion in a state of being fixed to the base portion constituting the floating caliper.
  • the disc brake device according to any one of (3) to (3).
  • the engagement position of the both parking pads with respect to the mating member is located on an extension line of the central axis of the second piston, as described in any one of (1) to (4) above Disc brake device.
  • both the parking pads are suspended and supported by a suspension pin that extends in the axial direction with respect to the floating caliper.
  • a thrust generating mechanism for converting a rotational motion into a linear motion is provided inside the second cylinder portion, and among the members constituting the thrust generating mechanism, a member that rotates when the parking brake is operated.
  • the disc brake device according to any one of (1) to (7), wherein a (for example, a spindle) is rotatably supported by the base portion that constitutes the floating caliper.
  • a for example, a spindle
  • an electric motor is installed in the floating caliper, and the thrust generation mechanism is driven using the electric motor as a drive source.
  • the single function of the disc brake device can exert two functions of the service brake and the parking brake.
  • the entire device can be reduced in size and weight, and the degree of freedom of the shape of the suspension device can be improved. That is, in the case of the present invention, the floating caliper constituting the floating disc brake mechanism is not supported by the dedicated support, but is opposed to the opposed piston caliper constituting the opposed piston disc brake mechanism. Thus, the opposed piston type disc brake mechanism and the floating type disc brake mechanism are integrated to form one disc brake device. For this reason, according to the present invention, since the support of the floating type disc brake mechanism can be omitted, the weight and cost of the apparatus can be reduced.
  • the second cylinder part constituting the floating type disc brake mechanism is integrally provided in a part of the opposed piston type caliper, it is fitted in the second cylinder part.
  • the floating caliper is supported so as to be axially displaceable with respect to the opposed piston caliper. Accordingly, the number of sliding pins used to support the floating caliper so as to be displaceable in the axial direction can be reduced to one in the smallest case, and among the opposed piston calipers, the floating caliper is A newly provided portion can be made small in order to support it so that it can be displaced in the axial direction (only the second cylinder portion can be formed in the minimum case).
  • a parking pad is engaged and supported on the front end surface of the second piston, and a brake torque applied to the parking pad is applied by the second cylinder part via the second piston. Since it is supported, it is not necessary to separately provide a part (torque receiving part) for supporting the brake torque applied to the parking pad in a part of the opposed piston type caliper.
  • the floating type caliper can be reduced in size and Weight reduction can be achieved.
  • a floating caliper having a cylinder portion is supported so as to be axially displaceable in a state adjacent to the opposed piston caliper in the circumferential direction, a part of the opposed piston caliper is used. In order to secure the rigidity of the opposed piston type caliper, it is necessary to increase the size of the opposed piston type caliper. There is.
  • the opposed piston caliper is provided with the second cylinder part that constitutes the floating type disc brake mechanism, so that the rigidity is sufficient without causing the above-described problem of upsizing. Can be secured. Furthermore, since the mounting portion necessary for the suspension device (knuckle) is only the portion for supporting and fixing the opposed piston type caliper, the degree of freedom regarding the shape of the suspension device can be improved. As a result, according to the present invention, compared to the case where dedicated devices for the service brake and the parking brake are provided, the overall device can be reduced in size and weight, and the degree of freedom of the shape of the suspension device is improved. it can.
  • FIG. 1 is a front view showing a disc brake device according to a first example of an embodiment of the present invention.
  • FIG. 2 is a rear view showing the disc brake device shown in FIG. 3 is a left side view showing the disc brake device shown in FIG. 4 is a right side view showing the disc brake device shown in FIG.
  • FIG. 5 is a plan view showing the disc brake device shown in FIG.
  • FIG. 6 is a perspective view showing the disk brake device shown in FIG. 1 as viewed radially outward and from the outer side.
  • FIG. 7 is a perspective view showing the disk brake device shown in FIG. 1 as viewed from the radially inner side and the inner side.
  • FIG. 8 is an exploded perspective view of the disc brake device shown in FIG.
  • FIG. 9 is an exploded perspective view of the disc brake device shown in FIG. 1 as viewed from the outside in the radial direction and from the outer side with the pads omitted.
  • FIG. 9 is an exploded perspective view of the disc brake device shown in FIG. 1 as viewed from the radially inner side and the inner side with each pad omitted.
  • FIG. 10 is a cross-sectional view taken along line AOOA in FIG. 11 is a cross-sectional view taken along the line BB in FIG.
  • FIG. 12 is a perspective view corresponding to FIG. 6, showing a second example of the embodiment of the present invention.
  • FIG. 13 is a perspective view corresponding to FIG. 7, showing a second example of the embodiment of the present invention.
  • FIG. 14 is an exploded perspective view corresponding to FIG. 8, showing a second example of the embodiment of the present invention.
  • FIG. 15 is an exploded perspective view corresponding to FIG. 9 and showing a second example of the embodiment of the present invention.
  • FIG. 16 is a cross-sectional view corresponding to FIG. 11, showing a second example of the embodiment of the present invention.
  • FIG. 17 is a sectional view corresponding to FIG. 11 and showing a third example of the embodiment of the present invention.
  • FIG. 18 is a perspective view corresponding to FIG. 6 and showing a fourth example of the embodiment of the present invention.
  • FIG. 19 is an exploded perspective view corresponding to FIG. 8, showing a fourth example of the embodiment of the present invention.
  • FIG. 20 is a schematic diagram showing a brake device having a conventional structure for exerting two functions of a service brake and a parking brake.
  • the disc brake device 8 of the first example is a hybrid type having both functions of a service brake and a parking brake.
  • the disc brake device 8 includes an opposed piston caliper 9, a floating caliper 10, four first pistons 11a and 11b (two outer first pistons 11a and two inner first pistons 11b. ), One second piston 12, a pair of service pads 13a, 13b (outer side service pad 13a, inner side service pad 13b), and a pair of parking pads 14a, 14b (outer side parking) Pad 14a and inner side parking pad 14b).
  • the opposed piston type caliper 9 is supported so that both the service pads 13a and 13b can move in the axial direction (front and back direction in FIGS. 1 and 2, left and right direction in FIGS.
  • the Such an opposed piston type caliper 9 is formed by casting (including die-cast molding) from a light alloy such as an iron-based alloy or an aluminum alloy, and includes a main body portion 15 and a second cylinder portion 16. .
  • the main body portion 15 includes an outer body portion 17 and an inner body portion 18 provided with the rotor 1 interposed therebetween, and one side in the circumferential direction of the outer body portion 17 and the inner body portion 18 (on the right side in FIGS.
  • the outer body part 17 and the inner body part 18 are provided in two pieces, respectively, and are the first cylinder part described in the claims, respectively, the outer side first cylinder part 20a and the inner side first cylinder part 20b. And comprising.
  • outer-side first cylinder portion 20a and the inner-side first cylinder portion 20b provided in the outer body portion 17 and the inner body portion 18 in a state of facing each other are respectively claimed.
  • the second cylinder portion 16 has a substantially cylindrical shape and is open on both sides in the axial direction.
  • the connecting portions 19a and 19b constituting the main body portion 15 the inner side of the connecting portion 19a on one circumferential side.
  • the main body portion 15 is provided integrally with the portion projecting from the portion to one side in the circumferential direction.
  • Such a second cylinder portion 16 constitutes a floating disc brake mechanism, and the floating caliper 10 that also constitutes a floating disc brake mechanism is not provided with a cylinder portion.
  • the cylinder portion that should originally be provided in the floating caliper is provided in the opposed piston caliper.
  • both the connecting portions 19a and 19b protrude radially outward from the outer peripheral surfaces of the outer body portion 17 and the inner body portion 18, and among the protruding portions, A pair of engaging grooves 21 and 21 are formed on the side surfaces facing each other along the circumferential direction.
  • pad clips 22 and 22 are attached to the both engaging concave grooves 21 and 21, respectively.
  • Each of these pad clips 22 and 22 is formed by bending an elastic metal plate having corrosion resistance such as stainless spring steel into a substantially U shape.
  • a pair of axially projecting ends are provided at both circumferential ends.
  • Anchor wall portions 23 and 23 are respectively provided.
  • the opposed piston type caliper 9 having such a configuration is supported and fixed to a mounting portion constituting the knuckle 4 (see FIG. 20) by a pair of mounting seats 24, 24 provided on the inner body portion 18. .
  • the structure of the pad clip 22 is described in detail in Japanese Patent Application Laid-Open No. 2008-304026, etc., and is not the gist of the present invention, and thus detailed description thereof is omitted.
  • the service pads 13a and 13b constituting the opposed piston type disc brake mechanism are a lining (friction material) 25 and a metal back plate (supporting the back surface of the lining 25).
  • Pressure plate 26 is provided.
  • a pair of engaging projections 27, 27 projecting on both sides in the circumferential direction are provided at the radially outer end,
  • a pair of projecting portions 28, 28 projecting on both sides in the circumferential direction are provided at the side portion.
  • both engaging grooves 21, 21 are engaged via the clips 22, 22. Further, in this state, the overhang portions 28, 28 abut or face each other against the anchor wall portions 23, 23. Thereby, both the service pads 13a and 13b are supported so as to be displaceable along the axial direction with respect to the opposed piston caliper 9 (main body portion 15), and are added to both the service pads 13a and 13b. Brake torque is supported by the anchor walls 23, 23.
  • the second piston 12 made of an aluminum alloy constituting a floating type disc brake mechanism is fitted so as to be able to be displaced along the axial direction.
  • the second piston 12 has a cylindrical shape with a bottom, and includes a cylindrical portion 29 and a bottom portion 30.
  • the bottom portion 30 is disposed on the outer side and is fitted in the second cylinder portion 16. It is disguised.
  • the inner peripheral surface of the cylindrical portion 29 is formed in a stepped shape, and has an inner-side large-diameter portion 31 and an outer-side small-diameter portion 32.
  • a dust cover 33a is provided between a portion of the cylindrical portion 29 constituting the second piston 12 exposed to the outer side from the second cylinder portion 16 and an outer side end surface of the second cylinder portion 16. It is installed as if it is overhanging.
  • the floating caliper 10 that constitutes a floating disc brake mechanism together with the second piston 12 is cast from a light alloy such as an iron-based alloy or an aluminum-based alloy (including die-cast molding), or the like.
  • the non-metallic material is formed into an inverted U-shape as a whole, and has a shape in which a cylinder is omitted from a caliper constituting a general floating disk brake device having a conventional structure.
  • Such a floating caliper 10 of the first example is provided at a claw portion 34 provided at an outer side end portion, a substantially cylindrical base portion 35 provided at an inner side end portion, and an axially intermediate portion. And a bridge portion 36 for connecting the claw portion 34 and the base portion 35.
  • one arm portion 37 is provided at the other circumferential end of the base portion 35, and a through hole 38 penetrating in the axial direction is formed at the distal end portion of the arm portion 37. .
  • a stepped hole 39 penetrating in the axial direction is formed in the base portion 35, and a sleeve having a substantially L-shaped cross section is formed in a large diameter hole portion 40 provided at an outer side end portion of the stepped hole 39. 41 is fitted and fixed.
  • the sleeve 41 includes a support cylinder portion 42 and an outward flange 43 provided at an inner side end, and an inner side surface of the outward flange 43 is brought into contact with the bottom surface of the large-diameter hole 40.
  • the outer peripheral surface of the outward flange 43 is fitted and fixed to the inner peripheral surface of the large-diameter hole 40.
  • a female spline portion 44 is formed on the inner peripheral surface of the support cylinder portion 42 in the axial direction.
  • a window portion 45 penetrating in the radial direction is formed in the circumferential center portion of the bridge portion 36.
  • the floating caliper 10 having such a configuration is supported to be displaceable along the axial direction with respect to the opposed piston caliper 9.
  • the bolt 46 inserted through the through hole 38 formed in the arm portion 37 from the outer side opens to the base end portion (inner side end portion) of the sliding pin 47.
  • the sliding pin 47 is fixedly coupled to the arm portion 37 by being screwed into the screw hole.
  • or intermediate part of this sliding pin 47 are slidably inserted in the guide hole 48 opened to the inner side surface of the said connection part 19a.
  • the outer side half (front half) of the support cylinder part 42 constituting the sleeve 41 fitted and fixed to the base part 35 is axially arranged inside the cylindrical part 29 constituting the second piston 12.
  • the floating caliper 10 uses the single sliding pin 47 and the second piston 12 (and the sleeve 41) to the opposed piston caliper 9. It is supported so that it can be displaced along the axial direction.
  • a portion of the sliding pin 47 exposed to the inner side from the guide hole 48 is covered with a dust boot 50.
  • a dust cover 33b is mounted between the two.
  • a thrust generating mechanism for converting rotational motion into linear motion is provided inside the cylindrical portion 29 constituting the second piston 12 (inside the second cylinder portion 16).
  • Screw mechanism 52 is provided inside the cylindrical portion 29 constituting the second piston 12 (inside the second cylinder portion 16).
  • the thrust generating mechanism 52 includes a spindle 54 having a male threaded portion 53 on the outer peripheral surface, a female threaded portion 55 on the inner peripheral surface, and a nut 56 screwed into the spindle 54.
  • the male spline portion 57 formed on the outer peripheral surface of the nut 56 engages with the female spline portion 44 formed on the inner peripheral surface of the sleeve 41 so that relative rotation is impossible and axial displacement is possible. is doing.
  • the outer side end portion of the nut 56 is internally fitted and fixed to the small diameter portion 32 provided at the outer side end portion of the cylindrical portion 29 constituting the second piston 12.
  • a flange portion 58 projecting radially outward is provided at an axially intermediate portion of the spindle 54, and provided at an inner side surface of the flange portion 58 and an axially intermediate portion of the stepped hole 39.
  • a thrust needle bearing 60 is provided between the bottom surface of the medium diameter hole 59. Further, with the intermediate portion of the spindle 54 rotatably supported inside the small diameter hole portion 61 of the stepped hole 39, the inner side end portion of the spindle 54 protrudes toward the inner side of the base portion 35. ing.
  • an electric motor 63 and a speed reduction mechanism 64 are housed in a casing 62 that is supported and fixed on the inner side surface of the base 35 constituting the floating caliper 10.
  • a final gear 65 that constitutes the speed reduction mechanism 64 is fixed to a portion of the inner side end portion of the spindle 54 that protrudes from the inner side surface of the base portion 35.
  • the nut 56 constituting the thrust generating mechanism 52 is displaced relative to the spindle 54 in the axial direction, so that the second piston 12 is moved to the second cylinder. It can be displaced in the axial direction within the portion 16. That is, in the case of the first example, the second piston 12 is not displaced in the axial direction based on the introduction of the hydraulic pressure, but is mechanically displaced in the axial direction using the thrust generating mechanism 52. It is configured like this.
  • the parking pads 14a and 14b constituting the floating disc brake mechanism are disposed between the outer side surface of the rotor 1 and the inner side surface of the claw portion 34. A portion and a portion between the inner side surface of the rotor 1 and the tip end surface of the second piston 12 are disposed.
  • the parking pads 14a and 14b arranged in this way are composed of linings 66a and 66b and metal back plates 67a and 67b that support the back surfaces of the linings 66a and 66b.
  • an inner parking pad 14b disposed between the inner side surface of the rotor 1 and the front end surface of the second piston 12 among the parking pads 14a and 14b.
  • the second piston 12 is engaged with and supported by the distal end surface.
  • a substantially cylindrical engaging projection 68b is formed on the inner side surface (back surface) of the back plate 67b constituting the inner parking pad 14b.
  • this engagement convex part 68b is internally fitted and fixed to the engagement concave part 69b formed in the center part of the outer side surface (tip surface of the second piston 12) of the bottom 30 constituting the second piston 12. Inserted without notice).
  • the brake torque applied to the inner parking pad 14b is supported by the second cylinder portion 16 via the second piston 12.
  • an outer side parking pad 14a arranged between the outer side surface of the rotor 1 and the inner side surface of the claw portion 34 of the parking pads 14a and 14b is an inner portion of the claw portion 34. It is engaged and supported with respect to the side surface.
  • a substantially cylindrical engaging convex portion 68a is formed on the outer side surface (back surface) of the back plate 67a constituting the outer side parking pad 14a.
  • this engagement convex part 68a is internally fitted and fixed (inserted without rattling) in the engagement concave part 69a formed in the inner side surface of the said nail
  • the brake torque applied to the outer side parking pad 14 a is supported by the opposed piston caliper 9 via the claw portion 34 and the sliding pin 47.
  • the engagement portion between the inner-side parking pad 14b and the second piston 12 and the engagement portion between the outer-side parking pad 14a and the claw portion 34 are
  • the second piston 12 is arranged on an extension line of the central axis of the second piston 12. Therefore, a rotational force acts on both the parking pads 14a and 14b based on the brake torque applied during braking. Therefore, in the case of the first example, in order to prevent the rotation of both the parking pads 14 a and 14 b, both the parking pads 14 a and 14 b are connected to the floating caliper 10 by one hanging pin. 70 is supported by suspension. As shown in FIG.
  • the suspension pin 70 is supported in a mounting hole 71 formed in the axial direction in the bridge portion 36 constituting the floating caliper 10. And support holes 72a and 72b formed in the radial direction outer end part of both said back board 67a and 67b are penetrated by the axial direction in the part exposed to the said window part 45 among the said suspending pins 70.
  • a clip 73 is provided inside the window portion 45.
  • the clip 73 is made of an elastic metal plate having corrosion resistance such as stainless spring steel, and has a substantially V-shaped cross section.
  • the clip 73 is supported by the suspension pin 70 so as not to fall off.
  • 14b are elastically pressed away from each other. This prevents the linings 66a and 66b constituting both the parking pads 14a and 14b from being dragged against the side surface of the rotor 1 when the parking brake is released.
  • the electric motor 63 is energized.
  • the nut 56 constituting the thrust generating mechanism 52 is displaced relative to the spindle 54 in the axial direction.
  • the inner side parking pad 14b is pressed against the inner side surface of the rotor 1 by the second piston 12, and the floating caliper 10 is moved against the opposed piston type caliper 9 by a reaction force caused by the pressing.
  • the outer side parking pad 14 a is pressed against the outer side surface of the rotor 1 by the claw portion 34.
  • the rotor 1 is strongly clamped from both sides in the axial direction and braking is performed.
  • the braking force by the parking brake can be obtained only by the floating disc brake mechanism.
  • the two functions of the service brake and the parking brake can be exhibited by itself.
  • the overall size and weight of the apparatus can be reduced, and the degree of freedom of the knuckle shape can be improved. That is, in the case of the first example, the floating caliper 10 constituting the floating disc brake mechanism is not supported by a dedicated support, but is opposed to the opposed piston type constituting the opposed piston type disc brake mechanism. By supporting the caliper 9, the opposed piston type disc brake mechanism and the floating type disc brake mechanism are integrated to form one disc brake device 8. For this reason, in the case of the first example, since the support of the floating type disc brake mechanism can be omitted, it is possible to reduce the weight and cost of the device.
  • the second cylinder portion 16 constituting the floating type disc brake mechanism is provided integrally with a part of the opposed piston type caliper 9, so that the second cylinder portion
  • the floating caliper 10 is supported to be displaceable in the axial direction with respect to the opposed piston caliper 9 by using the second piston 12 fitted in 16. Therefore, even when the number of sliding pins 47 used to support the floating caliper 10 so as to be displaceable in the axial direction is one, the rotation of the floating caliper 10 can be effectively prevented.
  • the second cylinder part 16 is the only part that is separately provided to support the floating type caliper 10 so as to be displaceable in the axial direction. it can.
  • the inner side parking pad 14b is engaged and supported on the front end surface of the second piston 12, and the brake torque applied to the inner side parking pad 14b is applied to the inner side parking pad 14b. It is supported by the second cylinder part 16 via the two pistons 12.
  • the outer side parking pad 14a is engaged and supported on the inner side surface of the claw portion 34, and the brake torque applied to the outer side parking pad 14a is transmitted through the claw portion 34 to the floating type. It is supported by the caliper 10 (main body portion 15). For this reason, it is not necessary to separately provide a part (torque receiving part) for supporting the brake torque applied to both the parking pads 14a and 14b in a part of the opposed piston type caliper 9.
  • the floating type caliper 10 is provided. Can be reduced in size and weight.
  • a floating caliper having a cylinder portion is supported so as to be axially displaceable in a state adjacent to the opposed piston caliper in the circumferential direction, a part of the opposed piston caliper is used. In order to secure the rigidity of the opposed piston type caliper, it is necessary to increase the size of the opposed piston type caliper. There is.
  • the second cylinder portion 16 constituting the floating disc brake mechanism is provided in the opposed piston type caliper 9, there is no problem of the enlargement as described above. In addition, sufficient rigidity can be secured. Furthermore, since the mounting portion necessary for the suspension device (knuckle) is only the portion for supporting and fixing the opposed piston type caliper 9 (the portion for fixing the mounting seats 24, 24), the degree of freedom regarding the shape of the suspension device is increased. It can be improved. As a result, according to the disc brake device 8 of the first example, the entire device can be reduced in size and weight as compared with the case where dedicated devices for the service brake and the parking brake are provided, and the suspension device. The degree of freedom of the shape can be improved.
  • the support structure of the outer side parking pad 14a is different from the structure of the first example of the above-described embodiment. That is, in the case of the second example, the opposed piston type caliper 9a is formed from the outer side portion of the main body portion 15 and the second cylinder portion 16, and the connecting portion 19a on one side in the circumferential direction constituting the main body portion 15.
  • the outer side cover portion 74 is provided so as to project in the same direction as the second cylinder portion 16 in a parallel manner. The protruding amount of the outer side cover portion 74 in the circumferential direction is such that the entire claw portion 34a constituting the floating caliper 10a is covered from the outer side by the outer side cover portion 74.
  • a through hole 75 penetrating in the axial direction is formed in the claw portion 34a, and a recess 76 is formed in the opening edge of the through hole 75 in the inner side surface of the claw portion 34a. Is formed.
  • the outer side auxiliary sliding pin 77 is inserted into the through hole 75.
  • the outer side auxiliary sliding pin 77 has a stepped columnar shape, and is provided with a large-diameter portion 78 having the largest outer diameter at the inner side end, and has the smallest outer diameter at the outer side end.
  • a small-diameter portion 79 is provided, and a medium-diameter portion 80 is provided between the large-diameter portion 78 and the small-diameter portion 79.
  • the large-diameter portion 78 is disposed inside the concave portion 76, and the inner-side end portion of the large-diameter portion 78 is disposed in a state protruding from the concave portion 76 (the inner side surface of the claw portion 34a).
  • the medium diameter portion 80 is inserted into the through hole 75 without rattling.
  • An engagement recess 81 is formed on the inner side end surface of the outer side auxiliary sliding pin 77, and the outer side surface of the back plate 67 a that constitutes the outer side parking pad 14 a with respect to the engagement recess 81 ( Engagement projections 68a formed on the back surface are engaged.
  • a portion of the outer side end portion of the outer side auxiliary sliding pin 77 that protrudes from the outer side surface of the claw portion 34a is axially inserted into a support recess 82 that opens to the inner side surface of the outer side cover portion 74. It is inserted and supported so that it can be displaced.
  • a dust boot 83 is provided between the outer peripheral surface of the intermediate portion of the outer side auxiliary sliding pin 77 and the peripheral portion of the support recess 82 on the inner side surface of the outer side cover portion 74. Is provided.
  • the brake torque applied to the outer side parking pad 14a is supported by the outer side cover 74 through the outer side auxiliary sliding pin 77.
  • the floating caliper 10a is supplementarily supported by the outer side auxiliary sliding pin 77 so that the opposed piston type caliper 9a.
  • it is supported so as to be displaceable in the axial direction. For this reason, the support rigidity of the floating caliper 10a can be increased.
  • the outer side parking pad engaged with the engaging recess 81 is provided. It is possible to prevent the outer side surface of 14a from directly contacting the inner side surface of the claw portion 34a. For this reason, since the finishing process to the inner side surface of the claw part 34a can be made unnecessary, the processing cost can be reduced. About another structure and an effect, it is the same as that of the case of the 1st example of embodiment mentioned above.
  • FIG. 1 A third example of the embodiment of the present invention will be described with reference to FIG. Also in the case of the third example, as in the structure of the second example of the above embodiment, the outer piston-side caliper 9a is provided with the outer side cover 74a, but in the case of the third example, The structure of the outer auxiliary sliding pin 77a is different from that of the second example of the above embodiment. That is, in the case of the third example, the outer side auxiliary sliding pin 77a has a shape such that the large-diameter portion 78 is omitted from the outer side auxiliary sliding pin 77 of the second example of the embodiment. The inner side end of the outer side auxiliary sliding pin 77a is not engaged with the outer side parking pad 14a.
  • the engagement convex portion 68a formed on the outer side parking pad 14a is directly engaged with the inner side opening portion of the through hole 75a formed in the claw portion 34a in order to insert the outer side auxiliary sliding pin 77a. Inserted without rattling).
  • an outward flange portion 85 is formed at a portion exposed from the outer side surface of the claw portion 34a at an intermediate portion of the outer side auxiliary sliding pin 77a.
  • An annular recess formed at the edge of the opening of the support recess 82 for inserting the small diameter portion 79 of the outer auxiliary sliding pin 77a in the inner side surface of the outer cover 74a. 86 is inserted inside.
  • a dust boot 83a is bridged between a portion exposed from the outer side surface of the claw portion 34a at an intermediate portion of the outer side auxiliary sliding pin 77a and the outer side surface of the claw portion 34a. It is installed.
  • the brake torque applied to the outer side parking pad 14a is not directly transmitted to the outer side auxiliary sliding pin 77a, but via the claw portion 34a. It is transmitted and supported by the outer side cover 74a.
  • the brake torque applied to the outer side parking pad 14a is not directly transmitted to the outer side auxiliary sliding pin 77a, but via the claw portion 34a. It is transmitted and supported by the outer side cover 74a.
  • the opposed piston type caliper 9b includes the main body portion 15, the second cylinder portion 16, the outer side cover portion 74, the circumferential end portion of the outer side cover portion 74, and the second end portion.
  • the cylinder part 16 is comprised from the reinforcement connection part 84 with which the circumferential direction one end part continued.
  • a claw part 34 and a bridge part 36 constituting the floating caliper 10b are arranged in a space surrounded on three sides by the main body part 15, the outer side cover part 74, and the reinforcing connecting part 84.
  • a pair of arm portions 37 and 37a having through holes 38 and 38a are provided on the base portion 35a constituting the floating caliper 10b so as to protrude on both sides in the circumferential direction. Is provided. Then, sliding pins 47 and 47a are coupled and fixed to these arms 37 and 37a using bolts 46 and 46a, respectively.
  • the sliding pin 47 on the other side in the circumferential direction has a tip portion or an intermediate portion thereof in the circumferential direction as in the case of each example of the above embodiment. It is slidably inserted into a guide hole 48 opened on the inner side surface of the connecting portion 19a on one side.
  • the tip portion or the intermediate portion thereof is slidably inserted into the guide hole 48a opened on the inner side surface of the reinforcing connecting portion 84.
  • the floating caliper 10b uses the pair of sliding pins 47 and 47a and the second piston 12 to form the opposed piston caliper 9b. On the other hand, it is supported so as to be displaceable in the axial direction. For this reason, the supporting rigidity of the floating caliper 10b can be increased as compared with the case of the first example of the embodiment described above. About another structure and an effect, it is the same as that of the case of the 1st example of embodiment mentioned above.
  • a main body portion (15) including one or more sets of first cylinder portions (20a, 20b), and one of the connection portions (19a, 19b) constituting the main body portion (15) ( 19a) is provided in a state of projecting in the circumferential direction from the inner side portion, and has a second cylinder portion (16) that is open on both sides in the axial direction, and is fixed to the suspension device in a state of straddling the rotor (1).
  • Each first cylinder part (20a, 20b) is fitted in a liquid-tight manner and capable of displacement along the axial direction, and the same number as each of these first cylinder parts (20a, 20b) is provided.
  • the main body portion has a claw portion (34) at the outer side end portion and a base portion (35) at the inner side end portion, straddles the second cylinder portion (16) from the outside in the radial direction and along the circumferential direction.
  • Floating caliper (10), At least one pair of service pads (13a, 13b) supported so as to be able to be displaced along the axial direction with respect to the main body (15) in a state of being disposed on both sides of the rotor (1); A portion between the outer side surface of the rotor (1) and the inner side surface of the claw portion (34), and a portion between the inner side surface of the rotor (1) and the front end surface of the second piston (12), respectively.
  • the outer side auxiliary sliding pin (77) is inserted into the through hole (75) formed in the axial direction with respect to the claw portion (34a), Of the parking pads (14a, 14b), the outer side parking pad (14a) disposed between the outer side surface of the rotor (1) and the inner side surface of the claw portion (34a) is The outer side auxiliary sliding pin (77) is engaged with the inner side end, and the outer side end of the outer side auxiliary sliding pin (77) is one of the connections constituting the main body (15).
  • a thrust generating mechanism (52) for converting rotational motion into linear motion is provided inside the second cylinder portion (16), and among the members constituting the thrust generating mechanism (52) Of the above [1] to [7], a member (spindle 54) that rotates when the parking brake is operated is rotatably supported by the base (35) that constitutes the floating caliper (10).
  • an electric motor (63) is installed in the floating caliper (10), and the thrust generating mechanism (52) is driven using the electric motor (63) as a drive source.
  • Disc brake device (8) as described.
  • the number of the 1st cylinder parts provided in an opposing piston type caliper is not limited to a total of four pieces, Two pieces, six pieces, etc. can be provided two or more.
  • the number of pads supported to be movable by the opposed piston caliper is not limited to two, and two or more pads can be provided.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

Selon l'invention, un étrier à pistons opposés (9) est constitué à partir d'un ensemble corps principal (15), et d'un second ensemble cylindre (16) disposée dans un état faisant saillie vers l'extérieur dans la direction périphérique à partir de la partie intérieure d'une partie de liaison (19a) constituant ledit ensemble corps principal (15). Dans un état dans lequel un étrier flottant (10) est disposé à travers le second ensemble cylindre (16) à partir de l'extérieur dans la direction radiale, et est adjacent à l'ensemble corps principal (15) dans la direction périphérique, un second piston (12) logé dans le second ensemble cylindre (16) et une broche coulissante (47) sont utilisés pour porter l'étrier flottant (10) de façon à permettre un déplacement axial par rapport à l'étrier de piston opposé (9).
PCT/JP2015/069454 2014-07-08 2015-07-06 Dispositif de frein à disque Ceased WO2016006581A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-140145 2014-07-08
JP2014140145A JP2016017558A (ja) 2014-07-08 2014-07-08 ディスクブレーキ装置

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WO2016006581A1 true WO2016006581A1 (fr) 2016-01-14

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Cited By (1)

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CN109372909A (zh) * 2018-04-08 2019-02-22 九江精密测试技术研究所 基于杠杆微动原理回转轴的机械锁紧装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7043353B2 (ja) * 2018-06-14 2022-03-29 曙ブレーキ工業株式会社 対向ピストン型ディスクブレーキ装置
KR102588379B1 (ko) * 2021-09-27 2023-10-12 현대모비스 주식회사 차량용 브레이크 장치

Citations (5)

* Cited by examiner, † Cited by third party
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JP2012072842A (ja) * 2010-09-29 2012-04-12 Akebono Brake Ind Co Ltd フローティング型ディスクブレーキ
JP2013019477A (ja) * 2011-07-12 2013-01-31 Akebono Brake Ind Co Ltd インフレータ式緊急ブレーキ
JP2013113411A (ja) * 2011-11-30 2013-06-10 Advics Co Ltd 車両の電動ブレーキ装置、及び車両の制動システム
WO2013121395A1 (fr) * 2012-02-16 2013-08-22 Freni Brembo S.P.A. Ensemble d'étrier de frein pour frein à disque de stationnement et de service
WO2014024313A1 (fr) * 2012-08-10 2014-02-13 日本軽金属株式会社 Étrier pour freins à disque

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012072842A (ja) * 2010-09-29 2012-04-12 Akebono Brake Ind Co Ltd フローティング型ディスクブレーキ
JP2013019477A (ja) * 2011-07-12 2013-01-31 Akebono Brake Ind Co Ltd インフレータ式緊急ブレーキ
JP2013113411A (ja) * 2011-11-30 2013-06-10 Advics Co Ltd 車両の電動ブレーキ装置、及び車両の制動システム
WO2013121395A1 (fr) * 2012-02-16 2013-08-22 Freni Brembo S.P.A. Ensemble d'étrier de frein pour frein à disque de stationnement et de service
WO2014024313A1 (fr) * 2012-08-10 2014-02-13 日本軽金属株式会社 Étrier pour freins à disque

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109372909A (zh) * 2018-04-08 2019-02-22 九江精密测试技术研究所 基于杠杆微动原理回转轴的机械锁紧装置

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