US20200080606A1 - Stator pad assembly - Google Patents
Stator pad assembly Download PDFInfo
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- US20200080606A1 US20200080606A1 US16/561,170 US201916561170A US2020080606A1 US 20200080606 A1 US20200080606 A1 US 20200080606A1 US 201916561170 A US201916561170 A US 201916561170A US 2020080606 A1 US2020080606 A1 US 2020080606A1
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- Prior art keywords
- stator
- slot
- lining
- plate
- pad assembly
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- Abandoned
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- 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
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- 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
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0056—Brake supports
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- 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
- F16D65/005—Components of axially engaging brakes not otherwise provided for
- F16D65/0068—Brake calipers
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- 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
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
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- 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
- F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
- F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
- F16D65/095—Pivots or supporting members therefor
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- 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
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/42—Slack adjusters mechanical non-automatic
- F16D65/44—Slack adjusters mechanical non-automatic by means of direct linear adjustment
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- 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
- F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
- F16D66/02—Apparatus for indicating wear
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- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0008—Brake supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
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- 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
- F16D2055/0004—Parts or details of disc brakes
- F16D2055/0016—Brake calipers
- F16D2055/0029—Retraction devices
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D2065/383—Slack adjusters for adjusting the spring force in spring-applied brakes
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- 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
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
- F16D2121/06—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure for releasing a normally applied brake
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/06—Pistons
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- 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
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/08—Seals, e.g. piston seals
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- 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
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- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
- F16D2125/10—Plural pistons interacting by fluid pressure, e.g. hydraulic force amplifiers using different sized pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F16D2127/00—Auxiliary mechanisms
- F16D2127/02—Release mechanisms
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0061—Joining
- F16D2250/0069—Adhesive bonding
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- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2250/00—Manufacturing; Assembly
- F16D2250/0084—Assembly or disassembly
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- 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
- F16D55/224—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 common actuating member for the braking members
- F16D55/225—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 common actuating member for the braking members the braking members being brake pads
- F16D55/226—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 common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes
- F16D55/2265—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 common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing
- F16D55/227—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 common actuating member for the braking members the braking members being brake pads in which the common actuating member is moved axially, e.g. floating caliper disc brakes the axial movement being guided by one or more pins engaging bores in the brake support or the brake housing by two or more pins
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- 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
- F16D65/0043—Brake maintenance and assembly, tools therefor
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- 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
- F16D65/183—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 with force-transmitting members arranged side by side acting on a spot type force-applying member
Definitions
- This invention relates to a stator pad assembly. More particularly, this invention relates to a stator pad assembly that includes a stator release slot and a tab.
- a second problem that is common in hydraulic calipers is removal and reinstallation of stator assemblies. Most designs require removal of the caliper in order to accomplish removal and replacement of the stator assemblies. Handling of the stators is generally a problem, especially if the caliper is not removed. There is generally not an effective way to get a hold of the stator. Again, this is also a slow process.
- stator assembly that offers one or more improvements over the prior art, such as ease of pushing a piston back.
- the stator pad assembly may include a backing plate including a plate slot extending to a plate slot end, the backing plate carrying a stator lining including a lining slot extending to a lining slot end, the lining slot being generally positioned with a portion of the plate slot such that the plate slot end and the lining slot end are of similar position, and the plate slot defining a tool-engaging surface adapted to receive a tool to thereby cause the stator pad assembly to travel.
- a method of servicing a stator pad assembly may include providing a brake including a housing having two pairs of torque pin holes, each pair of the torque pin holes receiving a respective torque pin, the torque pins carrying a pair of stator pad assemblies, each of the stator pad assemblies including a respective backing plate with a plate slot, each of the stator pad assemblies adapted to be acted on by a respective pair of piston assemblies in normal operation of the brake, inserting a tool in one of the plate slots to thereby force the respective backing plate against the respective pair of piston assemblies, removing one of the torque pins from the respective pair of torque pin holes, rotating at least one of the pair of stator pad assemblies about the other of the torque pins, and servicing the at least one of the pair of stator pad assemblies that was rotated in the step of rotating.
- stator pad assembly as above, that will allow for easy handling for removal and reinstallation.
- FIG. 1 is a perspective front view of a stator pad assembly having a release slot according to the concepts of the present invention.
- FIG. 2 is a perspective rear view of the stator pad assembly according to the concepts of the present invention.
- FIG. 3 is a perspective view of the opposed stator pad assemblies in position with a caliper brake housing according to the concepts of the present invention.
- FIG. 4 is a perspective view of the opposed stator pad assemblies in position with the caliper brake housing, showing a tool in position in the release slot for pushing back the piston according to the concepts of the present invention.
- FIG. 5 is a perspective view of the opposed stator pad assemblies in position with the housing, showing each stator pad assembly rotated away from the caliper brake housing according to the concepts of the present invention.
- FIG. 6 is a perspective view of the caliper brake housing, spaced from a wheel rotor according to the concepts of the present invention.
- FIG. 7 is a perspective view of the opposed stator pad assemblies and caliper brake housing in position with the wheel rotor according to the concepts of the present invention.
- a stator pad assembly according to the concepts of the present invention is generally indicated by the numeral 10 .
- Stator pad assembly 10 which may also be described as stator assembly 10 , includes a backing plate, generally indicated by the numeral 12 , which carries a stator lining, generally indicated by the numeral 14 , which may also be described as a stator pad 14 .
- Stator pad 14 may be secured to backing plate 12 by way of an adhesive or other generally known means, Installation and removal of stator pad 14 may include utilizing integral molding holes 17 within backing plate 12 . Integral molding holes 17 generally serve as anchor points for stator pad 14 material.
- Backing plate 12 includes a slot 16 formed therein.
- Slot 16 may have a first end within a tab 38 of backing plate 12 , which will be further described herein below with respect to the function of tab 38 .
- Slot 16 which may also be referred to as release slot 16 , may be formed in the center or the central portion of the width of backing plate 12 . This may be described as slot 16 being aligned with the centerline of a pair of piston assemblies 18 , which may also be described as pistons 18 .
- a respective pair of piston assemblies 18 is provided for each stator assembly 10 and piston assemblies 18 are adapted to move stator assembly 10 to a braking position by way of hydraulic fluid.
- Slot 16 extends only into a portion of backing plate 12 . That is to say, slot 16 does not extend entirely through the length of backing plate 12 , such that slot 16 extends to an end 20 within backing plate 12 .
- End 20 may be a curved end, which may be in the particular shape of a semi-circle as shown in the Figures. In other embodiments, end 20 may be rectangular or rectangular with corner radii or another suitable shape.
- a pair of opposed stator pad assemblies 10 may be utilized, such that slot 16 from one stator assembly 10 faces inward toward slot 16 of the other stator assembly 10 .
- stator lining 14 includes a slot 22 formed therein.
- Slot 22 may be formed in the center or the central portion of the width of stator lining 14 . This may be described as slot 16 being formed in the centerline of the pair of piston assemblies 18 .
- Slot 22 extends only into a portion of stator lining 14 . That is to say, slot 22 does not extend entirely through the length of stator lining 14 , such that slot 22 extends to an end 24 within stator lining 14 .
- End 24 may be a curved end, which may be in the particular shape of a semi-circle. In other embodiments, end 24 may be rectangular or rectangular with corner radii or another suitable shape.
- slot 22 from one stator assembly 10 faces inward toward slot 22 of the other stator assembly 10 .
- end 24 may be of the same or similar shape as end 20 . That is to say, end 24 may aligned or substantially aligned with end 20 . This may be useful for providing a constant surface for contacting a distal end of a tool 26 with the constant surface, as will be further discussed herein below.
- End 24 of slot 22 may include a central wear slot 42 extending therefrom, which slot 42 is useful for knowing the condition of stator lining 14 , as further discussed below.
- Central wear slot 42 with slot 22 together extend entirely through the length of stator lining 14 .
- slot 22 itself does not extend entirely through the length of stator lining 14 . It should be readily appreciated that slot 22 is of a different shape than the central wear slot 42 .
- a pair of opposed stator pad assemblies 10 may be particularly suitable for use with a caliper brake, generally indicated by the numeral 30 , including piston assemblies 18 .
- Caliper brake 30 is adapted to provide braking function to a wheel rotor 36 , which is part of a wheel end assembly, which is generally indicated by the numeral 44 .
- Caliper brake 30 may be mounted to wheel end assembly 44 by way of bolts 46 .
- stator assembly 10 In the configuration of caliper brake 30 , when stator assemblies 10 require servicing, it is generally necessary to push back the respective pair of piston assemblies 18 with which stator assembly 10 is coupled. That is, stator assembly 10 needs to be moved toward the respective pair of piston assemblies 18 .
- a user may utilize tool 26 , which may be a screwdriver or crow bar or other suitable implement.
- a first end of tool 26 may be inserted into slot 16 and slot 22 .
- Tool 26 may be inserted until a distal end thereof contacts end 20 and/or end 24 .
- Slot 16 may be said to define a tool-engaging surface 28 in backing plate 12 .
- the user of tool 26 may contact tool 26 with tool-engaging surface 28 when tool 26 is inserted into slot 16 and slot 22 .
- the user Upon tool 26 contacting tool-engaging surface 28 , the user causes tool 26 to apply sufficient force on tool-engaging surface 28 to thereby cause stator assembly 10 to move against the pair of piston assemblies 18 . This thereby pushes back the pair of piston assemblies 18 .
- slot 16 and slot 22 are centrally located in the respective components.
- the force of tool 26 also acts centrally on the pair of piston assemblies 18 .
- this causes consistent movement of piston assemblies 18 and avoids cocking piston assemblies 18 and otherwise damaging piston assemblies 18 and respective components thereof.
- stator assemblies 10 of caliper brake 30 For servicing stator assemblies 10 of caliper brake 30 , the hydraulic pressure normally supplied to caliper brake 30 is deactivated. Thus, the force of tool 26 against stator assemblies 10 is able to push back the respective piston assembly 18 . This may also release any hydraulic pressure that may remain when caliper brake 30 is in the deactivated state. Once stator assemblies 10 move the respective piston assembly 18 by tool 26 as discussed above, piston assemblies 18 will remain in that position because no further hydraulic pressure is being supplied in this mode of caliper brake 30 .
- Caliper brake 30 includes a pair of torque pins 32 for securing stator assemblies 10 within a caliper brake housing 33 , which may also be referred to as housing 33 .
- a caliper brake housing 33 which may also be referred to as housing 33 .
- one of the torque pins 32 may be removed from the respective torque pin holes 34 of stator assemblies 10 and the respective torque pin holes 35 within housing 33 . This may also include removing a respective spring 37 positioned around torque pin 32 and between the pair of stator assemblies 10 .
- Stator assemblies 10 may then be rotated about the other torque pin 32 (and spring 37 ) that remains within caliper housing 33 .
- Stator assemblies 10 may be rotated away from caliper housing 33 of caliper brake 30 such that they can be accessed by a user for performing maintenance thereon. This maintenance may include replacing stator linings 14 .
- both of the torque pins 32 and both of the springs 37 may be removed to completely remove stator assemblies 10 from caliper brake 30 .
- stator assemblies 10 may be reassembled with caliper brake 30 in a reverse manner as described above, which includes reactivating the hydraulic pressure to piston assemblies 18 .
- caliper brake 30 a portion of wheel rotor 36 is positioned between the pair of stator assemblies 10 .
- backing plate 12 may include tab 38 as an extension of backing plate 12 .
- Tab 38 may particularly extend from a central position with respect to the width of backing plate 12 .
- tab 38 includes a portion of slot 16 , including a distal end of slot 16 .
- Tab 38 protrudes from backing plate 12 and extends far enough from backing plate 12 as to be outside of an outer perimeter of caliper housing 33 of brake 30 , as perhaps best seen in FIG. 7 .
- This extension of tab 38 outside of caliper housing 33 enables tab 38 to be easily grabbed by a user for rotation and/or removal of stator assemblies 10 .
- caliper housing 33 may include a slot 40 , which may also be described as a depression 40 , generally corresponding to the position of tab 38 , such that tab 38 serves as an even longer extension from caliper housing 33 .
- stator lining 14 may include one or more wear slots 42 formed therein. Any suitable number of wear slots 42 may be utilized.
- Stator assemblies 10 of brake 30 include three wear slots 42 —a central wear slot, and one wear slot on each side of stator lining 14 .
- slots 42 may extend all the way through the height or length of stator lining 14 . In other embodiments, slots 42 do not extend all the way through the height or length of stator lining 14 . As shown in FIG. 1 , slots 42 may not extend all the way through the depth or thickness of stator lining 14 . In other embodiments, slots 42 do extend all the way through the depth or thickness of stator lining 14 . Slots 42 are shown as linear shaped, but other suitable configurations may be utilized. Though, slot 22 is adapted to receive tool 26 , slots 42 are generally too narrow to fit tool 26 .
- stator linings 14 will wear and become less thick. Thus, slots 42 will become less deep.
- slot 42 will be worn from its original depth to a subsequent depth.
- Slots 42 may be designed for a particular depth, such that a user will be able to identify, based on the subsequent depth, that stator linings 14 should be replaced. Stator linings 14 can be replaced by a user upon this identification. Slots 42 may also be helpful for controlling vibration and noise of caliper brake 30 .
- stator pad assembly constructed as described herein accomplishes the objects of the present invention and otherwise substantially improves the art.
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Abstract
Description
- This application claims the benefit of U.S. Provisional Application No. 62/728,122, filed Sep. 7, 2018; U.S. Provisional Application No. 62/728,285, filed Sep. 7, 2018; and U.S. Provisional Application No. 62/728,448, filed Sep. 7, 2018, which are each incorporated herein by reference.
- This invention relates to a stator pad assembly. More particularly, this invention relates to a stator pad assembly that includes a stator release slot and a tab.
- To service a hydraulic caliper brake, it is generally necessary to push back the pistons of the brake. This is typically a cumbersome and relatively slow process. The common design for hydraulic caliper brakes provides no particular feature to aid the service technician in pushing the caliper pistons back. The typical method involves the use of C-clamps, which is slow and awkward.
- A second problem that is common in hydraulic calipers is removal and reinstallation of stator assemblies. Most designs require removal of the caliper in order to accomplish removal and replacement of the stator assemblies. Handling of the stators is generally a problem, especially if the caliper is not removed. There is generally not an effective way to get a hold of the stator. Again, this is also a slow process.
- There are existing designs that do not require removal of the caliper, but the stators are hard to handle without removal of the caliper. These designs lack an effective manner for holding and manipulating the components during removal and replacement.
- Thus, there is a need for a stator assembly that offers one or more improvements over the prior art, such as ease of pushing a piston back.
- In general, a stator pad assembly and corresponding methods are provided. In accordance with an aspect of the invention, the stator pad assembly may include a backing plate including a plate slot extending to a plate slot end, the backing plate carrying a stator lining including a lining slot extending to a lining slot end, the lining slot being generally positioned with a portion of the plate slot such that the plate slot end and the lining slot end are of similar position, and the plate slot defining a tool-engaging surface adapted to receive a tool to thereby cause the stator pad assembly to travel.
- In accordance with another aspect of the invention, a method of servicing a stator pad assembly may include providing a brake including a housing having two pairs of torque pin holes, each pair of the torque pin holes receiving a respective torque pin, the torque pins carrying a pair of stator pad assemblies, each of the stator pad assemblies including a respective backing plate with a plate slot, each of the stator pad assemblies adapted to be acted on by a respective pair of piston assemblies in normal operation of the brake, inserting a tool in one of the plate slots to thereby force the respective backing plate against the respective pair of piston assemblies, removing one of the torque pins from the respective pair of torque pin holes, rotating at least one of the pair of stator pad assemblies about the other of the torque pins, and servicing the at least one of the pair of stator pad assemblies that was rotated in the step of rotating.
- It is an object of one aspect of the present invention to provide a stator pad assembly allowing for ease of pushing a piston back without complicated tools or awkward motions.
- It is an object of another aspect of the present invention to provide a stator pad assembly, as above, that will allow for easy handling for removal and reinstallation.
- These and other objects of the present invention, as well as the advantages thereof over existing prior art forms, which will become apparent from the description to follow, are accomplished by the improvements hereinafter described and claimed.
-
FIG. 1 is a perspective front view of a stator pad assembly having a release slot according to the concepts of the present invention. -
FIG. 2 is a perspective rear view of the stator pad assembly according to the concepts of the present invention. -
FIG. 3 is a perspective view of the opposed stator pad assemblies in position with a caliper brake housing according to the concepts of the present invention. -
FIG. 4 is a perspective view of the opposed stator pad assemblies in position with the caliper brake housing, showing a tool in position in the release slot for pushing back the piston according to the concepts of the present invention. -
FIG. 5 is a perspective view of the opposed stator pad assemblies in position with the housing, showing each stator pad assembly rotated away from the caliper brake housing according to the concepts of the present invention. -
FIG. 6 is a perspective view of the caliper brake housing, spaced from a wheel rotor according to the concepts of the present invention. -
FIG. 7 is a perspective view of the opposed stator pad assemblies and caliper brake housing in position with the wheel rotor according to the concepts of the present invention. - With reference to the Figures, a stator pad assembly according to the concepts of the present invention is generally indicated by the
numeral 10.Stator pad assembly 10, which may also be described asstator assembly 10, includes a backing plate, generally indicated by thenumeral 12, which carries a stator lining, generally indicated by thenumeral 14, which may also be described as astator pad 14.Stator pad 14 may be secured to backingplate 12 by way of an adhesive or other generally known means, Installation and removal ofstator pad 14 may include utilizingintegral molding holes 17 withinbacking plate 12.Integral molding holes 17 generally serve as anchor points forstator pad 14 material. -
Backing plate 12 includes aslot 16 formed therein.Slot 16 may have a first end within atab 38 ofbacking plate 12, which will be further described herein below with respect to the function oftab 38.Slot 16, which may also be referred to asrelease slot 16, may be formed in the center or the central portion of the width ofbacking plate 12. This may be described asslot 16 being aligned with the centerline of a pair ofpiston assemblies 18, which may also be described aspistons 18. A respective pair ofpiston assemblies 18 is provided for eachstator assembly 10 andpiston assemblies 18 are adapted to movestator assembly 10 to a braking position by way of hydraulic fluid. -
Slot 16 extends only into a portion ofbacking plate 12. That is to say,slot 16 does not extend entirely through the length ofbacking plate 12, such thatslot 16 extends to anend 20 withinbacking plate 12.End 20 may be a curved end, which may be in the particular shape of a semi-circle as shown in the Figures. In other embodiments,end 20 may be rectangular or rectangular with corner radii or another suitable shape. As best seen inFIGS. 3 and 4 , and as will be discussed further herein below, a pair of opposedstator pad assemblies 10 may be utilized, such thatslot 16 from onestator assembly 10 faces inward towardslot 16 of theother stator assembly 10. - In a corresponding position as
end 20 and a lower portion ofslot 16,stator lining 14 includes aslot 22 formed therein.Slot 22 may be formed in the center or the central portion of the width ofstator lining 14. This may be described asslot 16 being formed in the centerline of the pair ofpiston assemblies 18.Slot 22 extends only into a portion ofstator lining 14. That is to say,slot 22 does not extend entirely through the length ofstator lining 14, such thatslot 22 extends to anend 24 withinstator lining 14.End 24 may be a curved end, which may be in the particular shape of a semi-circle. In other embodiments,end 24 may be rectangular or rectangular with corner radii or another suitable shape. As best seen inFIGS. 3 and 4 , in the pair ofstator assemblies 10,slot 22 from onestator assembly 10 faces inward towardslot 22 of theother stator assembly 10. - In one or more embodiments,
end 24 may be of the same or similar shape asend 20. That is to say,end 24 may aligned or substantially aligned withend 20. This may be useful for providing a constant surface for contacting a distal end of atool 26 with the constant surface, as will be further discussed herein below. -
End 24 ofslot 22 may include acentral wear slot 42 extending therefrom, whichslot 42 is useful for knowing the condition ofstator lining 14, as further discussed below.Central wear slot 42 withslot 22 together extend entirely through the length ofstator lining 14. Though, as mentioned above,slot 22 itself does not extend entirely through the length ofstator lining 14. It should be readily appreciated thatslot 22 is of a different shape than thecentral wear slot 42. - A pair of opposed
stator pad assemblies 10 may be particularly suitable for use with a caliper brake, generally indicated by thenumeral 30, includingpiston assemblies 18.Caliper brake 30 is adapted to provide braking function to awheel rotor 36, which is part of a wheel end assembly, which is generally indicated by thenumeral 44.Caliper brake 30 may be mounted towheel end assembly 44 by way ofbolts 46. - In the configuration of
caliper brake 30, whenstator assemblies 10 require servicing, it is generally necessary to push back the respective pair ofpiston assemblies 18 with whichstator assembly 10 is coupled. That is,stator assembly 10 needs to be moved toward the respective pair ofpiston assemblies 18. - To achieve this movement of
stator assembly 10, a user may utilizetool 26, which may be a screwdriver or crow bar or other suitable implement. A first end oftool 26 may be inserted intoslot 16 andslot 22.Tool 26 may be inserted until a distal end thereof contacts end 20 and/or end 24.Slot 16 may be said to define a tool-engagingsurface 28 inbacking plate 12. The user oftool 26 may contacttool 26 with tool-engagingsurface 28 whentool 26 is inserted intoslot 16 andslot 22. Upontool 26 contacting tool-engagingsurface 28, the user causestool 26 to apply sufficient force on tool-engagingsurface 28 to thereby causestator assembly 10 to move against the pair ofpiston assemblies 18. This thereby pushes back the pair ofpiston assemblies 18. - As suggested above,
slot 16 andslot 22 are centrally located in the respective components. Thus, the force oftool 26 also acts centrally on the pair ofpiston assemblies 18. Advantageously, this causes consistent movement ofpiston assemblies 18 and avoids cockingpiston assemblies 18 and otherwisedamaging piston assemblies 18 and respective components thereof. - For
servicing stator assemblies 10 ofcaliper brake 30, the hydraulic pressure normally supplied tocaliper brake 30 is deactivated. Thus, the force oftool 26 againststator assemblies 10 is able to push back therespective piston assembly 18. This may also release any hydraulic pressure that may remain whencaliper brake 30 is in the deactivated state. Oncestator assemblies 10 move therespective piston assembly 18 bytool 26 as discussed above,piston assemblies 18 will remain in that position because no further hydraulic pressure is being supplied in this mode ofcaliper brake 30. -
Caliper brake 30 includes a pair of torque pins 32 for securingstator assemblies 10 within acaliper brake housing 33, which may also be referred to ashousing 33. Forservicing stator assemblies 10 oncepiston assemblies 18 are moved, one of the torque pins 32 may be removed from the respective torque pin holes 34 ofstator assemblies 10 and the respective torque pin holes 35 withinhousing 33. This may also include removing arespective spring 37 positioned aroundtorque pin 32 and between the pair ofstator assemblies 10. -
Stator assemblies 10 may then be rotated about the other torque pin 32 (and spring 37) that remains withincaliper housing 33.Stator assemblies 10 may be rotated away fromcaliper housing 33 ofcaliper brake 30 such that they can be accessed by a user for performing maintenance thereon. This maintenance may include replacingstator linings 14. In other embodiments, both of the torque pins 32 and both of thesprings 37 may be removed to completely removestator assemblies 10 fromcaliper brake 30. - Once maintenance of
stator assemblies 10 is completed,stator assemblies 10 may be reassembled withcaliper brake 30 in a reverse manner as described above, which includes reactivating the hydraulic pressure topiston assemblies 18. In this normal, non-maintenance operation ofcaliper brake 30, a portion ofwheel rotor 36 is positioned between the pair ofstator assemblies 10. - As suggested above, for assisting with ease of servicing
stator assemblies 10, backingplate 12 may includetab 38 as an extension ofbacking plate 12.Tab 38 may particularly extend from a central position with respect to the width ofbacking plate 12. As discussed above,tab 38 includes a portion ofslot 16, including a distal end ofslot 16. -
Tab 38 protrudes from backingplate 12 and extends far enough from backingplate 12 as to be outside of an outer perimeter ofcaliper housing 33 ofbrake 30, as perhaps best seen inFIG. 7 . This extension oftab 38 outside ofcaliper housing 33 enablestab 38 to be easily grabbed by a user for rotation and/or removal ofstator assemblies 10. For additional ease,caliper housing 33 may include aslot 40, which may also be described as adepression 40, generally corresponding to the position oftab 38, such thattab 38 serves as an even longer extension fromcaliper housing 33. - For assisting a user with knowing when
stator assemblies 10 need servicing, stator lining 14 may include one ormore wear slots 42 formed therein. Any suitable number ofwear slots 42 may be utilized.Stator assemblies 10 ofbrake 30 include threewear slots 42—a central wear slot, and one wear slot on each side ofstator lining 14. - As shown in
FIG. 1 ,slots 42 may extend all the way through the height or length ofstator lining 14. In other embodiments,slots 42 do not extend all the way through the height or length ofstator lining 14. As shown inFIG. 1 ,slots 42 may not extend all the way through the depth or thickness ofstator lining 14. In other embodiments,slots 42 do extend all the way through the depth or thickness ofstator lining 14.Slots 42 are shown as linear shaped, but other suitable configurations may be utilized. Though,slot 22 is adapted to receivetool 26,slots 42 are generally too narrow to fittool 26. - In operation of
caliper brake 30,stator linings 14 will wear and become less thick. Thus,slots 42 will become less deep. During operation ofcaliper brake 30,slot 42 will be worn from its original depth to a subsequent depth.Slots 42 may be designed for a particular depth, such that a user will be able to identify, based on the subsequent depth, thatstator linings 14 should be replaced.Stator linings 14 can be replaced by a user upon this identification.Slots 42 may also be helpful for controlling vibration and noise ofcaliper brake 30. - It is thus evident that a stator pad assembly constructed as described herein accomplishes the objects of the present invention and otherwise substantially improves the art.
Claims (15)
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US16/561,170 US20200080606A1 (en) | 2018-09-07 | 2019-09-05 | Stator pad assembly |
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US201862728448P | 2018-09-07 | 2018-09-07 | |
US201862728122P | 2018-09-07 | 2018-09-07 | |
US201862728285P | 2018-09-07 | 2018-09-07 | |
US16/561,170 US20200080606A1 (en) | 2018-09-07 | 2019-09-05 | Stator pad assembly |
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US20200080606A1 true US20200080606A1 (en) | 2020-03-12 |
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US16/561,201 Active 2039-09-23 US11156256B2 (en) | 2018-09-07 | 2019-09-05 | Hydraulic caliper assembly |
US16/561,228 Active 2040-02-19 US11293503B2 (en) | 2018-09-07 | 2019-09-05 | Spring applied hydraulic released brake |
US16/561,170 Abandoned US20200080606A1 (en) | 2018-09-07 | 2019-09-05 | Stator pad assembly |
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US16/561,201 Active 2039-09-23 US11156256B2 (en) | 2018-09-07 | 2019-09-05 | Hydraulic caliper assembly |
US16/561,228 Active 2040-02-19 US11293503B2 (en) | 2018-09-07 | 2019-09-05 | Spring applied hydraulic released brake |
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US (3) | US11156256B2 (en) |
AU (3) | AU2019226206A1 (en) |
CA (3) | CA3054045A1 (en) |
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KR20210105612A (en) * | 2020-02-19 | 2021-08-27 | 현대모비스 주식회사 | Brake apparatus for vehicle |
CN111795088A (en) * | 2020-05-25 | 2020-10-20 | 深圳市车质汇汽车配件有限公司 | Automobile brake caliper and manufacturing method thereof |
GB2614226A (en) * | 2021-09-14 | 2023-07-05 | Ap Racing Ltd | Braking system |
CN113719566A (en) * | 2021-11-01 | 2021-11-30 | 杭州斯格尔液压机械有限公司 | Disc type braking device suitable for new energy automobile |
CN216045120U (en) * | 2021-11-02 | 2022-03-15 | 蔚来汽车科技(安徽)有限公司 | Brake for vehicle and vehicle |
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-
2019
- 2019-09-02 ZA ZA2019/05783A patent/ZA201905783B/en unknown
- 2019-09-02 ZA ZA2019/05786A patent/ZA201905786B/en unknown
- 2019-09-02 ZA ZA2019/05784A patent/ZA201905784B/en unknown
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- 2019-09-05 AU AU2019226200A patent/AU2019226200A1/en not_active Abandoned
- 2019-09-05 AU AU2019226208A patent/AU2019226208A1/en not_active Abandoned
- 2019-09-05 US US16/561,170 patent/US20200080606A1/en not_active Abandoned
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AU2019226206A1 (en) | 2020-03-26 |
ZA201905786B (en) | 2020-07-29 |
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US20200080603A1 (en) | 2020-03-12 |
US11293503B2 (en) | 2022-04-05 |
ZA201905784B (en) | 2020-07-29 |
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