Brake system attachment assembly

Abstract

The invention relates to a brake system attachment assembly. In some examples, a brake system is configured to compress a brake disc stack to reduce and / or limit rotational movement of a wheel about a wheel axis. The braking system is configured to transmit a compressive force on the disc stack to a plate member, such as a backing plate. The plate member may be configured to transmit the compressive force to a support member, such as a torque tube, via one or more torque pads. The brake system includes a coupling system configured to couple the plate member with the support member. The coupling system includes a resilient member configured to exert a force on the pin in a direction opposite the compressive force to assist in retaining the locking tail of the pin in engagement with the support member.

Description

Technical Field

[0001] The present disclosure relates to a braking system for a vehicle. Background Art

[0002] Vehicles (such as aircraft) may use a wheel braking system including a multi-disc braking system. For example, the multi-disc braking system may include a disc stack including a plurality of rotor discs engaged with a wheel and a plurality of stator discs interleaved with the rotor discs. The rotor discs and the wheel are configured to rotate about an axis, while the stator discs remain stationary. To decelerate the rotational movement of the rotating wheel, the braking system may displace a piston against a pressure plate to compress the rotating rotor discs engaged with the wheel against the stationary stator discs, thereby generating a torque that decelerates the rotational movement of the wheel. In some examples, the rotor discs may be engaged with the wheel via rotor drive keys positioned on an inner surface of the wheel. In some examples, the stator discs may be engaged with a stationary torque tube via splines positioned on the stationary torque tube surrounding the axis. In some such examples, the braking system may be configured to compress the rotor discs and the stator discs between the piston and a backing plate supported by the torque tube. Summary of the Invention

[0003] The present disclosure describes example braking systems for reducing and / or substantially preventing wheel rotation. The braking system is configured to compress a brake disc stack to reduce and / or limit the rotational movement of the wheel about a wheel axis. The braking system is configured to transmit a compressive force on the disc stack to a plate member (e.g., a backing plate). The plate member is configured to transmit the compressive force to a support member (e.g., a torque tube) via one or more torque pads of the braking system. The braking system includes a coupling system configured to couple the plate member to the support member.

[0004] In some examples, a braking system includes: a plate member defining a plate passage extending from a first plate side of the plate member to a second plate side of the plate member; a support member defining a member passage extending from a first member side of the support member to a second member side of the support member; a pin including: a shank portion; a head portion coupled to a first end of the shank portion; and a locking tail coupled to a second end of the shank portion opposite the first end, wherein the shank portion is configured to extend from the plate passage to the member passage when the second plate side faces the first member side, and wherein when the shank portion extends from the plate passage to the member passage, the head portion is configured to be disposed within the plate passage and the locking tail is configured to engage the support member; and an elastic member configured to be disposed within the plate passage and between the head portion and the locking tail when the head portion is disposed within the plate passage and the locking tail engages the support member, wherein the elastic member is configured to apply a force on the pin in a direction from the support member to the plate member.

[0005] In some examples, a braking system includes: a backing plate that defines a plate channel extending in an axial direction from a first side of the backing plate to a second side of the backing plate; a pin that includes: a shank portion that extends through the plate channel, wherein the shank portion is configured to extend from the plate channel into a support member channel defined by a torque tube of the braking system and from a first side of the torque tube to a second side of the torque tube, wherein the second side of the backing plate is configured to face the first side of the torque tube, and wherein the backing plate is configured to transfer a compressive force from a disc stack of the braking system to the torque tube; and a head portion that is coupled to a first end of the shank portion; and a locking tail that is coupled to a second end of the shank portion opposite the first end, wherein the head portion is disposed within the plate channel and is configured to be disposed within the support member channel; a washer that surrounds the shank portion between the head portion and the locking tail and engages a boundary of the plate channel; and an elastic member that surrounds the shank portion between the washer and the head portion, wherein the elastic member is configured to transfer a force in a direction opposite to the compressive force on the head portion when the elastic member is compressed between the washer and the head portion.

[0006] In some examples, a technique includes: using a pin to extend a shank portion of the pin from a plate channel into a member channel, wherein the plate channel is defined by a plate member and extends from a first plate side of the plate member to a second plate side of the plate member, wherein the member channel is defined by a support member and extends from a first member side of the support member to a second member side of the support member, and wherein the second plate side faces the first member side; using the pin to position a head portion coupled to a first end of the shank portion within the plate channel when the shank portion of the pin extends from the plate channel into the member channel; using the pin to engage a locking tail with the support member when the shank portion of the pin extends from the plate channel into the member channel and the head portion is disposed within the plate channel, wherein the locking tail is coupled to a second end of the shank portion opposite the first end; and using an elastic member between the head portion and the locking tail to apply a force on the pin in a direction from the support member to the plate member when the head portion is disposed within the plate channel and the locking tail engages the support member.

[0007] Details of one or more examples are set forth in the accompanying drawings and the following description. Other features, objects, and advantages will be apparent from the description and drawings, and from the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a perspective view of an example wheel including a plurality of rotor drive keys on an inner surface of the wheel.

[0009] Figure 2 is a schematic cross-sectional view of an exemplary wheel including Figure 1 and a braking system.

[0010] Figure 3 is a plan view showing a part of a plate member and a support member of the braking system as viewed along a first axial direction of the braking system.

[0011] Figure 4 is a plan view showing a part of Figure 3 the braking system as viewed along a second axial direction of the braking system.

[0012] Figure 5 is a schematic cross-sectional view of the plate member and the support member, where the cutting plane is taken parallel to the page.

[0013] Figure 6 is a schematic cross-sectional view of a coupling system in which the plate member is in a first position relative to the support member, where the cutting plane is taken parallel to the page.

[0014] Figure 7 is a schematic cross-sectional view of Figure 6 the coupling system in which the plate member is in a second position relative to the support member, where the cutting plane is taken parallel to the page.

[0015] Figure 8 is a schematic perspective view of a locking tail in an unlocked configuration.

[0016] Figure 9 is a schematic perspective view of a locking recess of the support member.

[0017] Figure 10 is a schematic perspective view of Figure 8 the locking tail in a locked configuration.

[0018] Figure 11A is a front view of a part of the support member.

[0019] Figure 11B is Figure 11A a cross-sectional view of a part of the support member, where the cutting plane is indicated by Figure 11A A-A’ of

[0020] Figure 11C is Figure 11A a cross-sectional view of a part of the support member, where the cutting plane is indicated by Figure 11A B-B’ of

[0021] Figure 11D is Figure 11A , Figure 11B and Figure 11CRear view of a portion of a support member.

[0022] Figure 12 Is a schematic cross-sectional view of a first example of a coupling system, where the cutting plane is taken parallel to the page.

[0023] Figure 13 Is a schematic cross-sectional view of a second example of a coupling system, where the cutting plane is taken parallel to the page.

[0024] Figure 14 Is a flowchart illustrating an example method of coupling a plate member and a support member. Detailed Description

[0025] The present disclosure describes articles, systems, and techniques related to assemblies including a wheel and a braking system, and specifically describes an assembly configured to couple a first component (e.g., a backing plate) of a braking system to a second component (e.g., a torque tube) of the braking system. The wheel is configured to rotate about a wheel axis. The braking system includes a disk stack that includes one or more rotor disks and one or more stator disks. For example, the disk stack may include a plurality of rotor disks interleaved with a plurality of stator disks. The rotor disks are rotationally coupled to the wheel such that rotation of the wheel about the wheel axis causes rotation of the rotor disks about the wheel axis. The stator disks are configured to remain substantially stationary relative to the wheel and the rotor disks. The braking system is configured to compress the disk stack to cause engagement of friction surfaces on the rotating rotor disks and friction surfaces on the stationary stator disks, thereby reducing the rotational speed of the rotor disks about the wheel axis. The rotor disks are configured to engage the wheel such that a reduction in the rotational speed of the rotor disks causes a reduction in the speed of the wheel. The braking system may be configured to compress the disk stack against a plate member (e.g., a backing plate) supported by a support member (e.g., a torque tube).

[0026] In an example, the braking system is configured to compress the disk stack (e.g., using an actuator) between a pressure plate and a backing plate to cause engagement of friction surfaces within the disk stack. The braking system may be configured such that when the actuator applies a compressive force to compress the disk stack against the backing plate (e.g., to slow the wheel), the backing plate transmits at least a portion of the compressive force to the support member (e.g., a torque tube) via a torque pad. In an example, the braking system is configured such that a force applied by the actuator on the disk stack causes the disk stack to translate relative to the support member toward the plate member. The plate member may be configured to remain substantially stationary relative to the support member (e.g., move less than the disk stack) when the disk stack translates relative to the support member. Thus, the plate member may be configured to resist translation of the disk stack such that the disk stack is compressed by the actuator between the pressure plate and the plate member.

[0027] The braking system can be configured such that when the actuator applies a compressive force to compress the disk stack against the plate member (e.g., to slow down the wheel), the plate member transfers at least a portion of the compressive force to the support support member substantially through the torque pad. In an example, the torque pad is substantially disposed between the plate member and the support member. For example, the torque pad can include a pad surface configured to receive the compressive force from the plate member and a back surface configured to transmit the compressive force to the support member. In an example, the torque pad is configured to transfer the compressive force to a flange portion of the support member that extends in a direction radially outward from the wheel axis.

[0028] In some examples, the support member is configured to support the torque pad using a boss (e.g., a torque tube boss) or other portion of the support member. For example, the support member can be configured to support the torque pad using a flange portion of the support member. The support member can support the torque pad such that when the disk stack translates relative to the support member and the torque pad transfers the compressive force from the plate member to the support member, the torque pad remains substantially stationary relative to the support member (e.g., except for slight compression and / or pivoting). In an example, when the plate member transfers the compressive force to the torque pad, the pad surface of the torque pad is configured to contact and bear against the plate member, but the torque pad can be otherwise decoupled from the plate member. Similarly, the torque pad can be configured such that the pad surface engages the plate member to receive the compressive force, but the braking system otherwise does not have any additional devices, components, and / or fasteners extending between the pad surface and the plate member.

[0029] The braking system includes a coupling system that is configured to couple the plate member of the braking system and the support member of the braking system. In an example, the plate member is a backing plate of the braking system. The support member can be a torque tube of the braking system. In an example, the coupling system is configured to couple the plate member and a flange portion of the support member. In an example, the coupling system is configured to remain substantially unloaded when the plate member transfers the compressive force to the torque pad. For example, the coupling system can be configured such that when the plate member receives the compressive force from the disk stack, the plate member transfers substantially all of the compressive force to the support member (e.g., the torque tube) via the torque pad and substantially does not transfer the compressive force to the support member via the coupling system. In an example, the coupling system is configured to limit movement of the plate member relative to the support member in the axial direction of the wheel. For example, the braking system can be configured to transfer the compressive force to the plate member in a first axial direction of the wheel. The coupling system can be configured to limit movement of the plate member relative to the support member in at least a second axial direction opposite the first axial direction. In an example, the coupling system is configured to allow some movement of the plate member relative to the support member (e.g., movement caused by the compressive force and / or other operations of the braking system) while limiting movement of the plate member in the second axial direction.

[0030] The coupling system includes a pin that defines a handle portion. The pin includes: a head portion that is coupled to a first end of the handle portion; and a locking tail that is coupled to a second end of the handle portion. The handle portion is configured to extend from a plate member to a support member (e.g., from a backing plate to a torque tube) to couple the plate member and the support member. The locking tail and / or the head portion may be configured to limit movement of the plate member relative to the support member in a second axial direction when the handle portion extends from the plate member to the support member. The coupling system includes an elastic member (e.g., a spring member) that is configured to allow slight movement of the plate member relative to the support member in a first axial direction when the locking tail and / or the head portion limits movement of the plate member in the second axial direction. In an example, the elastic member is configured to apply a force (e.g., in the second axial direction) on the head portion to keep the pin substantially stationary relative to the support member when the plate member moves relative to the support member.

[0031] The handle portion is configured to extend through a plate passage defined by the plate member and a member passage defined by the support member. The plate passage may extend from a first plate side of the plate member (e.g., a side facing a stack of discs) to a second plate side of the plate member that is opposite the first plate side (e.g., a side facing away from the stack of discs). The member passage may extend from a first member side of the support member (e.g., a side of a flange portion configured to face the second plate side) to a second member side of the support member (e.g., a side of the flange portion facing away from the second plate side). In an example, the braking system is configured such that the second plate side faces substantially the first member side. The head portion may be configured to be recessed into the plate passage relative to the first plate side when the handle portion extends through the plate passage and the member passage. For example, when the first plate side includes a friction surface configured to contact the stack of discs, the head portion may be configured to be recessed into the plate passage relative to the friction surface.

[0032] The locking tail may be configured to contact the second member side of the support member when the handle portion extends through the plate passage and the member passage and the head portion is recessed within the plate passage. In an example, the locking tail is configured to be recessed into a locking recess of the member passage defined by the support member. In an example, the locking recess opens to the second member side of the support member. The locking tail may be configured to contact a boundary of the locking recess (“locking recess boundary”) to contact the second member side. In some examples, the locking tail is configured to establish a locked configuration and an unlocked configuration relative to the locking recess boundary. In an example, the locking tail may be configured to transition between the locked configuration and the unlocked configuration in response to a torque on the handle portion (e.g., when the handle portion causes the locking tail to rotate relative to the locking recess boundary).

[0033] When the head portion is disposed within the plate channel and the locking tail engages the second member side, the elastic member is configured to be disposed within the plate channel. The coupling system can be configured such that when the elastic member is positioned within the plate channel, the elastic member is disposed between the head portion and the locking tail. The elastic member is configured to apply a force on the pin in a direction from the support member to the plate member. For example, the elastic member can be configured to apply a force in a second axial direction when the stack of discs is configured to transfer a compressive force in a first axial direction to the plate member. In an example, the elastic member includes a first member end configured to apply a force on the pin and a second member end opposite the first member end. The boundary of the plate channel ("plate channel boundary") can be configured such that when the first member end moves relative to the plate member, the second end remains substantially stationary relative to the plate member, such that for example when the elastic member is in a compressed state, the elastic member applies a force on the pin.

[0034] In some examples, the coupling system includes a washer configured to engage the plate channel boundary such that the washer remains substantially stationary relative to the plate member. The elastic member can be configured such that when the first member end engages the head portion, the second member end engages the washer. Thus, the coupling system can be configured such that when the plate member moves in a first axial direction toward the support member (e.g., due to a compressive force and / or other operation of the braking system), the second end of the elastic member applies a force on the head portion in a second axial direction (e.g., due to expansion of the elastic member) to keep the head substantially stationary relative to the support member. The shank portion can be configured to transfer a force from the head portion to the locking tail in a second axial direction such that the locking tail remains engaged with the locking recess boundary.

[0035] In some examples, the locking tail is configured to pass through the plate channel and the member channel when the locking tail is in an unlocked configuration relative to the locking recess boundary. For example, in the unlocked configuration, the locking tail can be configured to pass from a first plate side to a second plate side via the plate channel and to pass from a first member side to a second member side via the member channel. Thus, in an example, the pin is configured such that in the unlocked configuration, the pin can be inserted from a first side of the plate in a first axial direction (e.g., the direction of the compression force of the braking system) through the plate channel and the member channel. Once the locking tail enters or extends beyond the locking recess, the pin can transfer torque to the locking tail (e.g., torque applied to the head portion) to cause the locking tail to transition from the unlocked configuration to the locked configuration such that the locking tail engages the locking recess boundary and restricts movement of the locking tail in a second axial direction. When the pin passes through the plate channel and the member channel in the first axial direction, the head portion can be used to compress the resilient member such that once the locking tail is placed in the locked configuration, the resilient member applies a force on the pin that tends to keep the locking tail seated within the locking recess. In some examples, the head portion defines a driver that is configured to receive torque from a driver tool (e.g., a screwdriver, a hex wrench, or other driver tool) to cause the locking tail to transition from the unlocked configuration to the locked configuration.

[0036] In some examples, the locking recess is configured to substantially prevent the locking tail from passing through the member channel from a first side of the member to a second side of the member or from a second side of the member to a first side of the member. The pin can be configured such that when the shank portion is inserted into the member channel in a second axial direction (e.g., a direction opposite to the compression force of the braking system), the locking tail is substantially seated within the locking recess. The shank portion can be configured to extend into the plate channel when the locking tail is substantially seated within the locking recess. In some examples, the head portion can be configured to be coupled to the shank portion (e.g., the head portion can be a C-shaped clip) such that the resilient member applies a force on the head portion and the shank portion transfers the force to the locking tail to keep the locking tail seated within the locking recess.

[0037] In some braking systems (such as those that do not include a locking recess), a coupling assembly connecting a plate member (e.g., a backing plate) and a support member (e.g., a torque tube) may require the installation of a retaining member (e.g., a cotter pin) to restrict movement of the pin relative to the support member and / or the plate member. The coupling assembly may require the pin to extend beyond the surface of the support member to allow the retaining member and the pin to be coupled (e.g., by an installer). Due to this extension, the support member may be configured to couple to the coupling assembly using one or more bosses protruding in the second axial direction, such that the extension of the pin does not interfere with the hub of the rotating wheel. The protrusion of the bosses may limit the thickness of the plate member (e.g., the thickness of the backing plate) and, accordingly, the amount of heat dissipation material (e.g., carbonaceous material) within the plate member. In the coupling system disclosed herein, a locking tail configured to be seated within the locking recess and / or a resilient member that tends to retain the locking tail within the locking recess may limit the need for the boss to protrude to accommodate the retaining member. Consequently, the coupling system disclosed herein may allow for an increase in the thickness of the plate member and an increase in the amount of heat dissipation material therein. This may improve heat transfer properties of the plate member during operation of the brake system, improve the operational life of the plate member, and / or provide other advantages.

[0038] The coupling systems disclosed herein can simplify the installation and / or removal of a plate member (e.g., a backing plate). The coupling systems can allow an installer to work primarily from one side of the torque tube, thereby substantially avoiding the need to manipulate the space between the torque tube and the outside of the wheel (e.g., when the brake system is positioned within the wheel cavity). For example, the disclosed coupling systems can limit and / or avoid the need to install a cotter pin (and / or its precise curvature) in the space between the torque tube and the outside of the wheel. In some examples, the coupling systems can eliminate the need for cotter pins and / or other fasteners for installation, thereby reducing the consumables required for installation.

[0039] Figure 1 is a perspective view illustrating an example wheel 10 configured to rotate about an axis of rotation A. In the example, the wheel 10 is part of an aircraft vehicle. In other examples, the wheel 10 may be part of any other vehicle, such as, for example, any land vehicle or other vehicle.

[0040] Figure 2 is a schematic cross-sectional view of an example wheel 10 and an example braking system 12 configured to use an actuator 14 to compress a disc stack 16 (eg, between a pressure plate 18 and a plate member 20 ) to decelerate rotation of the wheel 10 . Figure 2 The cross section is illustrated with a cutting plane perpendicular to the axis of rotation A.

[0041] exist Figure 1In the example shown, wheel 10 includes a rim 28 that defines an outer surface 30 and an inner surface 32. Rim 28 includes a well 34 and a hub 36. Inner surface 32 and hub 36 can define a wheel cavity 38 (e.g., a volume) between inner surface 32 and hub 36. In some examples, a tire (not shown) can be mounted on outer surface 30 of rim 28. Wheel 10 can include an inner bead seat 40 and an outer bead seat 42, which are configured to hold the tire on outer surface 30 of rim 28. In an example, wheel 10 can include an inner section 44 (e.g., including inner bead seat 40) and an outer section 46 (e.g., including outer bead seat 42). Wheel 10 and / or braking system 12 can define a first axial direction A1 that is substantially parallel to the axis of rotation A. Wheel 10 and / or braking system 12 can define a second axial direction A2 that is opposite to the first axial direction A1. Wheel 10 can be configured to travel in a direction DT that is substantially perpendicular to the axis of rotation A when wheel 10 rotates about the axis of rotation A. Wheel 10 and / or braking system 12 can define a radial direction R that is substantially perpendicular to the first axial direction A1 and the second axial direction A2 and extends in a direction from the axis of rotation A toward the inner surface 32 and / or the support member 64( Figure 2 ).

[0042] Wheel 10 includes a plurality of rotor drive keys 48 on inner surface 32 of wheel 10, such as rotor drive keys 50 and 52. In some examples, each rotor drive key of the plurality of rotor drive keys 48 can extend along a substantially axial direction of wheel 10 (e.g., along a direction parallel to the axis of rotation A). The plurality of rotor drive keys 48 (“rotor drive keys 48”) and inner surface 32 are configured to be substantially stationary relative to each other such that when wheel 10 (and inner surface 32) rotates about the axis of rotation A, each rotor drive key among the rotor drive keys (e.g., rotor drive keys 50, 52) rotates in a closed path about axis A. Thus, when wheel 10, inner surface 32, and rotor drive keys 48 rotate about the axis of rotation A, a force opposite to the direction of rotation acts on one or more of the rotor drive keys 48 to slow down or stop the rotation. As will be discussed, rotor drive keys 48 can be configured to receive torque from braking system 12( Figure 2 ), which is configured to reduce and / or stop the rotation of wheel 10. Rotor drive keys 48 can be integrally formed with inner surface 32 or can be separated from inner surface 32 and mechanically attached to the inner surface.

[0043] Figure 2 is a schematic cross-sectional view of wheel 10 illustrating a braking system 12 that is at least partially positioned within wheel cavity 38. Figure 2Illustrated is a rim 28 of a split rim wheel, where lug bolts 55 and lug nuts 56 connect an inner section 44 and an outer section 46. However, in other examples, the rim 28 may utilize other configurations (e.g., a one-piece rim). The axial assembly 58 is configured to support the wheel 10 while allowing the wheel 10 to rotate about an axis A using one or more bearings (such as bearings 60 and 62). For example, the bearings 60, 62 may define a substantially circular track around the axial assembly 58. In an example, the axis A extends through the axial assembly 58.

[0044] A support member 64 (e.g., a torque tube) is coupled to the axial assembly 58 such that when the wheel 10 rotates about the axial assembly 58 and the axis A, the support member 64 remains substantially rotationally stationary. The support member 64 may at least partially surround the exterior of the axial assembly 58. The axial assembly 58 may be mechanically coupled to a strut or some other part of the vehicle using, for example, bolts 57 and / or bolts 59 or some other fastening device. In some examples, the axial assembly 58 supports and / or houses electrical, pneumatic, hydraulic, and / or other connectors and / or sensors (such as a wheel speed sensor) required for the operation of one or more components of the braking system 12. The wheel 10 is shown and described to provide context for the braking system described herein. However, in other examples, the braking system described herein may be used with any suitable wheel assembly.

[0045] In Figure 2 In the example shown, the braking system 12 is disposed within the wheel 10 (e.g., the wheel cavity 38) and is configured to engage the support member 64 and the rotor drive key 50. The braking system 12 is configured to generate a torque to resist the rotation of the wheel 10 about the axis A and transfer the torque to the rotor drive key 50, thereby reducing and / or eliminating the rotation of the wheel 10 about the axis A. The braking system 12 includes a disc stack 16 that includes one or more rotor discs (e.g., rotor discs 66, 68, 70, 72) and one or more stator discs (e.g., stator discs 74, 76, 78). The rotor discs 66, 68, 70, 72 and / or the stator discs 74, 76, 78 may have any suitable configuration. For example, the rotor discs 66, 68, 70, 72 and / or the stator discs 74, 76, 78 may each be a substantially annular disc that surrounds the axial assembly 58. The stator discs 74, 76, 78 are coupled to the support member 64 via splines 80 and remain rotationally stationary with the support member 64 (and the axial assembly 58) when the wheel 10 rotates. The rotor discs 66, 68, 70, 72 are rotationally coupled to the rotor drive key 50 and the inner surface 32 and rotate substantially synchronously with the wheel 10 about the axis A.

[0046] Actuator 14 is configured to compress the stack of disks 16 to bring the friction surfaces of the rotor disks 66, 68, 70, 72 into contact with the friction surfaces of the stator disks 74, 76, 78, thereby generating a shear force between the disks. The shear force causes the rotor disks 66, 68, 70, 72 to apply a torque on the rotor drive key 50 in a direction opposite to the rotation of the wheel 10. In the example, actuator 14 is configured to translate the piston 84 (e.g., translate substantially parallel to axis A) to compress the stack of disks 16. Actuator 14 can use any suitable process to translate the piston 84. In some examples, actuator 14 is configured to translate the piston 84 by supplying and / or discharging pressurized hydraulic fluid to or from the piston chamber. Additionally or alternatively, in some examples, actuator 14 is configured to translate the piston 84 by motion (e.g., rotational motion) generated by an electric motor.

[0047] In the example, actuator 14 is configured to compress the stack of disks 16 using the pressure plate 18 and / or the plate member 20. In the example, the plate member 20 is the backing plate of the braking system 12. For example, actuator 14 can be configured to apply an actuator force FA (e.g., using the piston 84) to compress the stack of disks 16 substantially between the pressure plate 18 and the plate member 20. In the example, the plate member 20 can also be supported by the support member 64. For example, the plate member 20 can be configured to be substantially stationary relative to the support member 64. When the wheel 10 rotates around the support member 64, the wheel 10 can rotate around the plate member 20. The braking system 12 can be configured such that the actuator force FA applied by the actuator 14 on the stack of disks 16 causes the stack of disks 16 to translate towards the plate member 20. For example, the actuator force FA can cause the rotor disks 66, 68, 70, 72 to translate towards the plate member 20 on the rotor drive key 50 and cause the stator disks 74, 76, 78 to translate towards the plate member 20 on the spline 80.

[0048] The plate member 20 is configured to resist the translation of the stack of disks 16 and apply a reaction force on the stack of disks 16 that is opposite to the actuator force FA applied by the actuator 14, such that the stack of disks 16 is compressed by the actuator 14 between the pressure plate 18 and the plate member 20. When the support member 64 supports the plate member 20, the plate member 20 can transfer the compressive force to the support member 64 in response to the actuator force FA. For example, the compressive force can be a force having substantially the same directionality as the actuator force FA and a magnitude equal to at least a portion of the actuator force FA.

[0049] The brake system 12 may include a torque pad 90 that is configured to transfer a compressive force from the plate member 20 to the support member 64. The torque pad 90 is supported by a boss 92 of the brake system 12. In an example, the boss 92 is a torque tube boss supported and / or defined by the support member 64. The brake system 12 may be configured such that the plate member 20 transfers a compressive force to the torque pad 90, and the torque pad 90 transfers the compressive force to the support member 64 via the boss 92. In an example, the torque pad 90 is configured to be inserted into a pit (e.g., pit 122( Figure 3 )) of the plate member 20 when the boss 92 supports the torque pad 90. In some examples, the plate 20 may be configured to transfer torque to the torque pad 90, the boss 92, the torque tube 64.

[0050] The brake system 12 includes a coupling system 95 (shown in dashed lines in Figure 2 ) that is configured to couple the plate member 20 and the support member 64. In an example, the coupling system 95 is configured to couple the plate member 20 and a flange portion 103 of the support member 64 (“support member flange portion 103”). The coupling system 95 may be configured to remain substantially unloaded when the plate member 20 transfers a compressive force to the support member 64 in response to an actuator force FA. For example, the coupling system 95 may be configured such that when the plate member 20 receives a compressive force from the disk stack 16, the plate member 20 transfers substantially all of the compressive force to the support member 64 (e.g., support member flange portion 103) via the torque pad 90 and / or one or more other torque pads, and transfers substantially no compressive force to the support member 64 via the coupling system 95.

[0051] The coupling system 95 is configured to restrict movement of the plate member 20 relative to the support member 64 in the axial direction of the wheel. For example, the brake system 12 may be configured to transfer a compressive force from the disk stack 16 to the plate member 20 in a first axial direction A1. The coupling system 95 may be configured to restrict movement of the plate member 20 relative to the support member 64 in at least a second axial direction A2. In an example, the coupling system 95 is configured to allow some movement of the plate member 20 relative to the support member 64 in the first axial direction A1 and / or the second axial direction A2 (e.g., movement caused by the compressive force and / or other operations of the brake system 12), while restricting the maximum displacement of the plate member 20 from the support member 64 in at least the second direction A2. The coupling system 95 may include a pin member (e.g., pin 97( Figure 5 )) that is configured to restrict the maximum displacement of the plate member 20 from the support member 64 in at least the second direction A2. The coupling system 95 may include an elastic member (e.g., elastic member 126( Figure 5 )) that is configured to substantially hold the pin member substantially stationary relative to the support member 64 when the plate member 20 moves relative to the support member 64.

[0052] Thus, the braking system 12 can be used to reduce and / or eliminate the rotation of the wheel 10 using the compressive force applied by the actuator 14 on the disk stack 16. The plate member 20 can be configured to resist the compressive force, thereby causing compression of the disk stack 16. The support member 64 can be configured to support the plate member 20 such that when the actuator 14 applies a compressive force on the disk stack 16, the support member 64 is stressed (e.g., substantially parallel to the axis A). The coupling system 95 is configured to allow some movement of the plate member 20 relative to the support member 64 in the first axial direction A1 and / or the second axial direction A2 while restricting the maximum displacement of the plate member 20 from the support member 64 in at least the second direction A2.

[0053] The wheel 10 can be used with any kind of private, commercial, or military aircraft or other types of vehicles. The wheel 10 can be mounted to the vehicle via, for example, an axial assembly 58. The axial assembly 58 can be mounted on a strut of a landing gear (not shown) or other suitable component of the vehicle to connect the wheel 10 to the vehicle. The wheel 10 can rotate about the axis A and the axial assembly 58 to impart motion to the vehicle. The wheel 10 is shown and described to provide context for the braking system described herein; however, in other examples, the braking system described herein can be used with any suitable wheel assembly.

[0054] Figure 3 An exemplary end view of a portion of the braking system 12 as viewed in the direction of the first axial direction A1 is illustrated. In Figure 3 , the first axial direction A1 points into the page, and the second axial direction A2 points out of the page. Figure 4 An exemplary end view of a portion of the braking system 12 as viewed in the direction of the axial direction A2 is illustrated. In Figure 4 , the second axial direction A2 points into the page, and the first axial direction A1 points out of the page. Figure 5 An exemplary plan view of a portion of the braking system 12 is illustrated, where the support member 64, the plate member 20, and the washer 138 are illustrated in cross-section, where the cutting plane is taken parallel to the page and passes through the plate member 20, the support member 64, the washer 138, and the axis of rotation A. Figure 3 , Figure 4 and Figure 5 are illustrated according to the indicated first axial direction A1, second axial direction A2, and radial direction R.

[0055] In the example, the support member 64 includes a support member body 106 that defines a longitudinal portion 105 of the support member (“longitudinal portion 105 of the support member”) and a flange portion 103 of the support member. In the example, the longitudinal portion 105 of the support member supports and / or defines one or more splines, such as spline 80 and second spline 81. The flange portion 103 of the support member can support one or more torque pads positioned between the plate member 20 and the flange portion 103 of the support member, such as torque pad 90 and second torque pad 108. In Figure 3 this example, the flange portion 103 of the support member is hidden behind the plate member 20 and is shown in dashed lines. The torque pads 90, 108 are hidden behind the plate member 20 and are illustrated in dashed lines. In Figure 4 this example, the longitudinal portion 105 of the support member, the spline 80, and the second spline 81 are hidden behind the flange portion 103 of the support member and the plate member 20 and are shown in dashed lines.

[0056] In the example, the longitudinal portion 105 of the support member is configured to extend in a direction substantially parallel to the axis of rotation A (e.g., substantially parallel to the first axial direction A1 and / or the second axial direction A2). In some examples, the longitudinal portion 105 of the support member is configured to surround the axis of rotation A. For example, the longitudinal portion 105 of the support member can define a substantially annular body that surrounds the axis of rotation A. The longitudinal portion 105 of the support member can support and / or define one or more splines, such as spline 80 and second spline 81.

[0057] In the example, the flange portion 103 of the support member extends radially outward from the longitudinal portion 105 of the support member (e.g., substantially along the radial direction R). In some examples, the flange portion 103 of the support member defines one or more bosses (e.g., boss 92( Figure 2 )) that support the torque pads 90, 108. In some examples, the torque pads 90, 108 of the braking system 12 and / or other torque pads can be radially displaced (e.g., substantially along the radial direction R) from the axis A about a perimeter P defined by the support member 64 (e.g., the flange portion 103 of the support member). In some examples, the braking system 12 is configured such that the torque pads 90, 108 of the braking system 12 and / or other torque pads define a substantially circumferential pattern about the axis A. In some examples, the torque pads 90, 108 of the braking system 12 and / or other torque pads can be spaced apart such that the spacing distance (e.g., arc length) between adjacent torque pads is substantially equal about the axis A. In some examples, the torque pads 90, 108 of the braking system 12 and / or other torque pads can be spaced apart such that the spacing distance (e.g., arc length) between adjacent torque pads varies about the axis A. The spacing distance and / or arc length can be defined in a plane substantially perpendicular to the axis A.

[0058] The plate member 20 defines a first side 102 (“first plate side 102”) and a second side 104 (“second plate side 104”) that is substantially opposite the first plate side 102. In an example, a body 21 of the plate member 20 (“plate member body 21”) defines the first plate side 102 and / or the second plate side 104. In an example, the plate member 20 is configured such that at least a portion of the plate member body 21 is located between the first plate side 102 and the second plate side 104. The support member 64 (e.g., support member flange portion 103) defines a first side 110 (“first member side 110”) and a second side 112 (“second member side 112”) that is substantially opposite the first member side 110. In an example, a support member body 106 defines the first member side 110 and / or the second member side 112.

[0059] In an example, the support member 64 is configured such that at least a portion of the support member body 106 is located between the first member side 110 and the second member side 112. In an example, the braking system 12 is configured such that (as Figure 5 depicted) when the coupling system 95 couples the support member 64 (e.g., support member flange portion 103) and the plate member 20, the second plate side 104 faces substantially the first member side 110. The coupling system 95 extends between the plate member 20 and the support member 64 (e.g., support member flange portion 103).

[0060] For example, Figure 6 illustrates a coupling system 95 in which the plate member 20 is in a first position relative to the support member 64, where the support member 64, the plate member 20, the elastic member 126, and the washer 138 are illustrated as cross-sections, where the cutting plane is taken parallel to the page and passes through the plate member 20, the support member 64, the washer 138, and the elastic member 126. Figure 7 illustrates a coupling system 95 in which the plate member 20 is in a second position relative to the support member 64, where the support member 64, the plate member 20, the elastic member 126, and the washer 138 are illustrated as cross-sections, where the cutting plane is taken parallel to the page and passes through the plate member 20, the support member 64, the washer 138, and the elastic member 126. Figure 6 and Figure 7 is illustrated in accordance with the shown first axial direction A1, second axial direction A2, and radial direction R.

[0061] The plate member 20 defines a plate passage 98 that extends from a first plate side 102 to a second plate side 104. In an example, the plate member body 21 defines a first opening 107 (“first plate opening 107”) that opens from the plate passage 98 to the first plate side 102. The plate member body 21 may define a second opening 109 (“second plate opening 109”) that opens from the plate passage 98 to the second plate side 104. In an example, the plate passage 98 is bounded by a boundary 111 (“plate passage boundary 111”) defined by the plate member body 21. In an example, the plate passage 98 and / or the plate passage boundary 111 define a passage axis PA that extends through the plate passage 98. The plate passage boundary 111 may surround the passage axis PA. In an example, the passage axis PA intersects the first plate opening 107 and the second plate opening 109. In some examples, when the support member 64 (e.g., the longitudinal portion 105 of the support member) supports the plate member 20, the passage axis PA is substantially parallel to the first axial direction A1 and / or the second axial direction A2.

[0062] The support member 64 (e.g., the flange portion 103 of the support member) defines a member passage 116 that extends from a first member side 110 to a second member side 112. In an example, the support member body 106 defines a first opening 113 (“first member opening 107”) that opens from the member passage 116 to the first member side 110. The support member body 106 may define a second opening 115 (“second member opening 115”) that opens from the member passage 116 to the second member side 112. In an example, the member passage 116 is bounded by a boundary 117 (“member passage boundary 117”) defined by the support member body 106. In an example, the member passage 116 and / or the member passage boundary 117 define a member passage axis MA that extends through the member passage 116. The member passage boundary 117 may surround the member passage axis MA. In an example, the member passage axis MA intersects the first member opening 113 and the second member opening 115. In some examples, when the second plate side 104 is substantially facing the first member side 110 and / or when the coupling system 95 couples the support member 64 (e.g., the flange portion 103 of the support member) and the plate member 20, the member passage axis MA is substantially parallel to the first axial direction A1 and / or the second axial direction A2.

[0063] In some examples, the braking system 12 is configured such that when the second plate side 104 is generally facing the first member side 110 and / or when the coupling system 95 couples the support member 64 (e.g., the support member flange portion 103) and the plate member 20, the member channel axis MA extends through the plate channel 98 and the member channel 116. The braking system 12 can be configured such that when the member channel axis MA extends through the plate channel 98 and the member channel 116, the member channel axis MA intersects the first plate opening 107 and the second member opening 115. In an example, when the member channel axis MA extends through the plate channel 98 and the member channel 116, the plate channel boundary 111 and the member channel boundary 117 surround the member channel axis MA.

[0064] In some examples, the braking system 12 is configured such that when the second plate side 104 is generally facing the first member side 110 and / or when the coupling system 95 couples the support member 64 (e.g., the support member flange portion 103) and the plate member 20, the plate channel axis PA extends through the plate channel 98 and the member channel 116. The braking system 12 can be configured such that when the plate channel axis PA extends through the plate channel 98 and the member channel 116, the plate channel axis PA intersects the first plate opening 107 and the second member opening 115. In an example, when the plate channel axis PA extends through the plate channel 98 and the member channel 116, the plate channel boundary 111 and the member channel boundary 117 surround the plate channel axis PA.

[0065] The coupling system 95 is configured to couple the plate member 20 and the support member flange portion 103. The coupling system 95 includes a pin 97 that includes: a shank portion 99; a head portion 96 that is coupled to a first end of the shank portion 99; and a locking tail 114 that is coupled to a second end of the shank portion 99 that is opposite the first end. The shank portion 99 is configured to extend from the plate channel 98 to the member channel 116. In an example, the shank portion 99 defines a longitudinal axis L ( Figure 6 ) that extends between the head portion 96 and the locking tail 114. In some examples. The first plate opening 107, the plate channel boundary 111, and the second plate opening 109 are configured such that the locking tail 114 can pass through the first plate opening 107, the plate channel boundary 111, and the second plate opening 109 in a first axial direction A1 such that, for example, the pin 97 can be inserted through the plate channel 98 and the member channel 116 in the first axial direction A1 (e.g., by an installer).

[0066] As will be discussed, in some examples, the coupling system 95 is configured to restrict the locking tail (e.g., the locking tail 177 ( Figure 12 )) from passing through the member channel (e.g., the member channel 158 ( Figure 12)) In these examples, the coupling system can be configured such that the handle portion 99 can be inserted through the member channel in the second axial direction A2 (e.g., by the installer).

[0067] The pin 97 can be configured such that when the handle portion 99 extends from the plate channel 98 into the member channel 116, the head portion 96 is disposed (e.g., positioned) within the plate channel 98. The pin 97 can be configured such that when the handle portion 99 extends from the plate channel 98 into the member channel 116, the locking tail 114 engages (e.g., contacts) a portion of the support member 64 (e.g., the support member flange portion 103). The locking tail 114 can be configured to be at least partially disposed (e.g., positioned) within the member channel 116 when the locking tail 114 engages that portion of the support member 64. In an example, the head portion 96 and / or the plate channel 98 are configured such that when the head portion 96 is disposed within the plate channel 98, the head portion 96 is recessed (e.g., recessed in the first axial direction A1) relative to the first plate side 102. The member channel 116 and / or the locking tail 114 can be configured such that when the locking tail 114 is disposed within the member channel 116, the locking tail 114 is recessed (e.g., recessed in the second axial direction A2) relative to the second member side 112.

[0068] In an example, the member channel 116 includes a locking recess 118 that is configured to receive the locking tail 114. The locking recess 118 can be defined by the support member body 106. In an example, the locking recess 118 is bounded by a boundary 124 (“locking recess boundary 124”) that is defined by the support member body 106. The locking recess 118 can be a part of the member channel 116. The locking recess boundary 124 can be a part of the member channel boundary 117. In an example, the locking recess boundary 124 defines a second member opening 115 and / or the second member opening 115 leads to the locking recess 118. The pin 97 can be configured such that when the locking tail 114 engages the support member 64, the locking tail 114 is disposed substantially against at least a portion of the locking recess boundary 124 within the locking recess 118 (e.g., the bearing surfaces 144, 146( Figure 6 )) disposed. In an example, the pin 97 (e.g., the handle portion 99) is configured such that when the head portion 96 is disposed within the plate channel 98, the locking tail 114 is disposed against the locking recess boundary 124.

[0069] Engaging the locking tail 114 with the support member 64 (e.g., the support member flange portion 103) can obviate the need to restrict the movement of the pin 97 relative to the support member 64 with a retaining member (e.g., a split pin). This can limit and / or eliminate the need to use one or more support member bosses (e.g., torque tube bosses) that project along the second axial direction A2 to support the pin 97 (which may require, for example, restricting and / or avoiding the pin from extending towards the wheel 10). Limiting and / or eliminating the need for one or more support member bosses for supporting the pin 97 can allow for an increase in the thickness of the plate member 20 (e.g., the thickness along the first axial direction A1 and / or the second axial direction A2) and an increase in the amount of heat dissipating material including the plate member 20 (e.g., the plate member body 21). This can improve the heat transfer performance of the plate member 20 during operation of the braking system 12, increase the operating life of the plate member 20 and / or provide other advantages.

[0070] The coupling system 95 includes an elastic member 126 that is configured to apply a force FS on the pin 97, e.g., to help maintain the engagement of the locking tail 114 with the support member body 106. In an example, the elastic member 126 is configured to maintain the engagement of the locking tail 114 with the support member body 106 (e.g., the locking recess boundary 124) when the plate member 20 (e.g., the plate member body 21) moves relative to the support member body 106. The shank portion 99 can be configured to transmit the force FS to the locking tail 114 such that the locking tail 114 applies a force FL on the support member body 106 (e.g., the locking recess boundary 124). The locking tail 114 can be configured to engage (e.g., contact and / or frictionally engage) the support member body 106 and / or the locking recess boundary 124 when the shank portion 99 transmits the force FS to the locking tail 114 and / or the locking tail 114 applies the force FL on the support member body 106.

[0071] In an example, the elastic member 126 can be configured to apply the force FS on the head portion 96. The head portion 96 can be configured to transmit the force FS to the shank portion 99. In an example, the elastic member 126 can be configured to be disposed within the plate channel 98 (e.g., positioned therein) when the head portion 96 is disposed within the plate channel 98. The elastic member 126 can be configured to be disposed between the head portion 96 and the locking tail 114 when the head portion 96 is disposed within the plate channel 98, the locking tail 114 is disposed within the member channel 116 (e.g., the locking recess 118) and / or the shank portion 99 extends from the plate channel 98 to the member channel 116.

[0072] The resilient member 126 can be configured to apply a force FS on the pin 97 in a direction from the support member 64 (e.g., the support member flange portion 103) toward the plate member 20 (e.g., along the second axial direction A2). In some examples, the braking system 12 is configured to apply a compressive force on the plate member 20 along the first axial direction A1 (e.g., via the disc stack 16( Figure 2 )) and the resilient member 126 is configured to apply the force FS along the second axial direction A2. In an example, the resilient member 126 is configured to keep at least a portion of the pin 97 (e.g., the head portion 96, the shank portion 99, and / or the locking tail 114) substantially stationary relative to the support member body 106 when the plate member body 21 moves relative to the support member body 106 (e.g., by applying the force FS).

[0073] For example, Figure 6 A coupling system 95 is depicted in which the plate member 20 is in a first position relative to the support member 64 such that the second plate side 104 and the first member surface 110 define a displacement D1 between the plate member body 21 and the support member body 106. Figure 7 A coupling system 95 is depicted in which the plate member 20 is in a second position relative to the support member 64 such that the second plate side 104 and the first member surface 110 define a displacement D2 between the plate member body 21 and the support member body 106. The displacement D2 is less than the displacement D1. The plate member 20 can be configured to move toward the support member 64 (e.g., transition from the displacement D1 to the displacement D2) when the braking system 12 compresses the disc stack 16 and / or during other operations of the braking system 12 or the wheel 10( Figure 1 ). For example, the plate member 20 can be configured to move toward the support member 64 when the first plate side 102 receives a compressive force from the disc stack 16.

[0074] The resilient member 126 can be configured to continue to apply the force FS when the plate member 20 is in a first position relative to the support member 64( Figure 6 ), when the plate member 20 is in a second position relative to the support member 64( Figure 7 ), when the plate member 20 transitions from the first position to the second position, and / or when the plate member 20 transitions from the second position to the first position. When the plate member 20 is in the first position, in the second position, transitioning from the first position to the second position, and / or transitioning from the second position to the first position, the resilient member 126 can apply the force FS to keep the locking tail 114 engaged with the support member body 106.

[0075] In an example, the resilient member 126 is configured to substantially maintain the position of the head portion 96 relative to the support member body 106 (e.g., the first member surface 110) when the plate member 20 transitions from the first position to the second position and / or from the second position to the first position (e.g., using the force FS). The resilient member 126 can be configured to substantially maintain the position of the shank portion 99 relative to the support member body 106 (e.g., the first member surface 110) when the plate member 20 transitions from the first position to the second position and / or from the second position to the first position. The resilient member 126 can be configured to substantially maintain the position of the locking tail 114 relative to the support member body 106 (e.g., the second member surface 112 and / or the locking recess boundary 124) when the plate member 20 transitions from the first position to the second position and / or from the second position to the first position.

[0076] It should be understood that the magnitude of the force FS applied by the resilient member 126 can vary when the plate member 20 establishes the first position, the second position, or transitions between the first and second positions. For example, the resilient member 126 can be configured to apply a force FS having a first magnitude when the plate member 20 is in the first position ( Figure 6 ), and be configured to apply a force FS having a second magnitude different from the first magnitude when the plate member 20 is in the second position ( Figure 7 ). In some examples, the resilient member 126 is configured to expand when the plate member 20 transitions from the first position to the second position. In some examples, the second magnitude is less than the first magnitude. The resilient member 126 can be a substantially elastically deformable element that exhibits a change in shape when a force is applied to the resilient member 126 (e.g., a force that causes the resilient member 126 to compress and / or the resilient member 126 to expand), and substantially reverses the change in shape when the force is removed. The resilient member 126 can include, for example, a coil spring, a leaf spring, and / or another resilient member. In some examples, the resilient member 126 can be configured to at least partially surround the shank portion 99 (e.g., when the shank portion 99 extends into the plate channel 98).

[0077] In some examples, the resilient member 126 defines a first end 128 (“first member end 128”) and a second end 130 (“second member end 130”) that is opposite the first member end 128. The resilient member 126 can be configured to apply a force FS using the first member end 128 and apply a force FS2 to the plate member body 21 (e.g., the plate channel boundary 111) in a direction opposite to the force FS using the second member end 130. In an example, the coupling system 95 is configured to keep the second member end 130 substantially stationary relative to the plate member body 21 when the first member end 128 (and / or the pin 97) moves relative to the plate member body 21. In an example, the plate channel boundary 111 is configured to keep the second member end 130 substantially stationary relative to the plate member 20 when the first member end 128 moves relative to the plate member 20.

[0078] For example, the plate channel boundary 111 can define a first dimension A1 in a first portion 132 of the plate channel 98 and a second dimension A2 in a second portion 134 of the plate channel 98. The second dimension A2 can be smaller than the first dimension A1. The plate channel boundary 111 can substantially define a bearing surface 136 between the first portion 132 and the second portion 134. In an example, the bearing surface 136 is the surface defined by the plate channel boundary 111 when the plate channel boundary 111 transitions from the first dimension A1 to the second dimension A2. The bearing surface 136 can be configured to keep the second member end 130 substantially stationary relative to the plate member 20 when the first member end 128 moves relative to the plate member 20. In an example, the bearing surface 136 is configured to receive the force FS2 applied by the second member end 130. In an example, the first dimension A1 is substantially parallel to the second dimension A2. In some examples, the first dimension A1 and the second dimension A2 are substantially parallel to the radial direction R.

[0079] The first plate opening 107 can define the dimension A1. The second plate opening 109 can define the dimension A2. In an example, the first dimension A1 and / or the second dimension A2 are substantially perpendicular to the member channel axis MA. In an example, the second portion 134 is located between the first portion 132 and the second plate opening 109. The first portion 132 can be between the second portion 134 and the first plate opening 107. In some examples, the plate channel boundary 111 is configured such that the first portion 132 and the second portion 134 substantially define a counterbore.

[0080] The head portion 96 can be configured to be disposed within the plate channel 98 when the handle portion 99 extends between the plate channel 98 and the member channel 116 and the locking tail 114 engages the locking recess boundary 124. In an example, the head portion 96 is configured to be disposed within the plate channel 98 such that the head portion 96 (e.g., along the first axial direction A1) is recessed relative to the first plate side 102. For example, the head portion 96 may include a head face 119 that is configured to face away from the handle portion 99 and / or the locking tail 114. The pin 97 (e.g., the handle portion 99) can be configured such that when the locking tail 114 engages the locking recess boundary 124, the head face 119 of the head portion 96 is displaced from the first plate side 102 along the first axial direction A1.

[0081] In some examples, the coupling system 95 includes a washer 138 that is configured to engage the plate channel boundary 111. The washer 138 can be configured to engage the plate channel boundary 111 such that the washer 138 remains substantially stationary relative to the plate member 20. In some examples, the washer 138 is configured to engage the bearing surface 136. In an example, the elastic member 126 is configured to engage the washer 138 when the washer 138 engages the plate channel boundary 111. The washer 138 can be configured to receive a force FS2 from the elastic member 126 (e.g., the second member end 130) and transfer the force FS2 to the plate member body 21 (e.g., the plate member boundary 111).

[0082] In an example, the washer 138 is configured to at least partially surround the handle portion 99 and / or the channel axis PA when the washer 138 engages the plate channel boundary 111. The washer 138 can be configured to be disposed between the head portion 96 and the locking tail 114 when the head portion 96 is disposed within the plate channel 98, the locking tail 114 is disposed within the member channel 116 (e.g., the locking recess 118), and / or the handle portion 99 extends from the plate channel 98 to the member channel 116. In some examples, the washer 138 (e.g., the body of the washer 138) defines a hole 140 (e.g., a washer hole). The washer 138 can be configured such that when the washer 138 is disposed between the head portion 96 and the locking tail 114, the handle portion 99 and / or the channel axis PA extends through the hole 140.

[0083] In an example, the locking tail 114 is configured to establish a locked configuration relative to the locking recess boundary 124 and an unlocked configuration relative to the locking recess boundary 124. The pin 97 can be configured such that when the handle portion 99 extends through at least the member channel 116, the locking tail 114 engages the locking recess boundary 124 in the locked configuration, such that for example the locking recess boundary 124 resists displacement of the pin 97 in the second axial direction A2. The pin 97 can be configured such that when the handle portion 99 extends through at least the member channel 116, the locking tail 114 is substantially unable to engage the locking recess boundary 124 in the unlocked configuration, such that for example the locking recess boundary 124 substantially permits displacement of the pin 97 in the second axial direction A2. In an example, the pin 97 is configured (e.g., by transferring torque from the handle portion 99 to the locking tail 114) to transition the locking tail 114 between the locked configuration and the unlocked configuration.

[0084] In some examples, the head face 119 defines a driver 121 configured to receive torque. In an example, the driver 121 is configured to engage a tool (e.g., a screwdriver, hex wrench, or other driver tool) and receive torque from the tool. The driver 121 can be configured such that when the driver 121 receives torque, the head portion 96 transfers the torque to the handle portion 99. The handle portion 99 can transfer the torque to the locking tail 114 to, for example, transition the locking tail 114 between the unlocked configuration and the locked configuration. In an example, the torque is a torque substantially about the longitudinal axis L of the handle portion 99. In an example, the head portion 119, the handle portion 99, and / or the locking tail 114 are configured to rotate substantially about the longitudinal axis L defined by the handle portion 99 when the driver 121 receives torque.

[0085] Thus, the coupling system 95 can be configured such that the pin 97 can be inserted (e.g., by an installer) in the plate channel 98 and the member channel 116 in the first direction A1, with the locking tail 114 in the unlocked configuration. When the pin 97 is inserted, the insertion can cause compression of the elastic member 126. The insertion can continue until the locking tail 114 enters or passes over the locking recess 118. Torque applied to the locking tail 114 (e.g., caused by torque applied by the installer to the head portion 96) can cause the locking tail 114 to transition from the unlocked configuration to the locked configuration such that the locking tail 114 engages the locking recess boundary 124. The elastic member 126 can apply a force FS on the pin 97 (e.g., the head portion 96) to maintain the locking tail 114 in engagement with the locking recess boundary 124.

[0086] As an example, Figure 8 illustrates a schematic perspective view of the locking tail 114 in an unlocked configuration relative to Figure 9 the depicted locking recess boundary 124. Figure 9A schematic perspective view of the locking recess boundary 124 defined by the support member body 106 is illustrated, wherein the member channel axis MA passes through the first member opening 113 and the second member opening 115. Figure 9 , the locking recess boundary 124, the component channel boundary 117, and the portion of the first component opening 113 that is hidden by the support component body 106 are depicted with dashed lines. Figure 10 Illustrated relative to Figure 9 Schematic perspective view of the locking tail 114 with the locking recess boundary 124 in the locked configuration.

[0087] Figure 11A A schematic end view of a portion of a support member body 106 defining a depicted locking recess boundary 124 according to first, second, and radial directions A1, A2, and R as shown, is illustrated, wherein the first axial direction A1 points outward from the page and the second axial direction A2 points into the page. Figure 11B The diagram illustrates a first direction A1, a second direction A2 and a radial direction R as shown. Figure 11A A schematic cross-sectional view of a portion of the support member body 106, wherein the radial direction R points outward from the page and the section plane is at Figure 11A It is represented as A-A'. Figure 11C The first direction A1, the second direction A2, the radial direction R and Figure 11A The section plane represented as B-B' in Figure 11A and Figure 11B Schematic cross-sectional view of a portion of the support member body 106.

[0088] Figure 11D The diagram illustrates a first direction A1, a second direction A2 and a radial direction R as shown. Figure 11A 、 Figure 11B and Figure 11C Schematic end view of a portion of a support member body 106 , wherein a first axial direction A1 points into the page and a second axial direction A2 points out from the page.

[0089] The locking tail 114 can be configured to unlock when the locking tail 114 is in an unlocked configuration relative to the locking recess boundary 124 (e.g., Figure 8As shown, it passes through the component channel 116 in the direction from the first component side 110 to the second component side 112 (e.g., along the first axial direction A1) and enters the locking recess 118. In an example, when the locking recess boundary 124 defines the second component opening 115, the locking tail 114 is configured to pass through the first component opening 113 in the direction from the first component side 110 to the second component side 112 and enter the locking recess 118. In an example, the locking recess boundary 124 is configured to define one or more bearing surfaces 142, such as bearing surface 144 and bearing surface 146. The bearing surfaces 144, 146 can be configured such that when the locking tail 114 is in the unlocked configuration relative to the locking recess boundary 124 (as Figure 8 shown), the locking tail 114 can be displaced from a first point P1 displaced from the bearing surfaces 144, 146 along the second axial direction A2 through the component channel 116 and the locking recess 118 along the first axial direction A1 to a second point P2 displaced from the bearing surfaces 144, 146 along the first axial direction A1. In an example, the first point P1 and the second point P2 are located on the component channel axis MA. In an example, the first point P1 is displaced from the first component side 110 along the second axial direction A2. The second point P2 can be displaced from the second component side 112 along the first axial direction A1.

[0090] The bearing surfaces 144, 146 can define steps and / or protrusions extending in a direction away from the component channel axis MA. In an example, the bearing surfaces 144, 146 are recessed from the second component side 112. For example, the bearing surfaces 144, 146 can be displaced by a depth DP from the second component side 112 (e.g., along the second axial direction A2). The locking recess boundary 124 can define the depth DP such that when the locking tail 114 contacts the bearing surfaces 144, 146, the locking tail 114 is recessed (e.g., displaced along the second axial direction A2) or is substantially flush with the second component surface 112. In some examples, the locking recess boundary 124 defines the bearing surface 144 and / or the bearing surface 146 such that a direction vector located on and / or substantially parallel to the bearing surface forms an acute angle with the component channel axis MA, such as an acute angle greater than about 20 degrees, greater than about 40 degrees, and / or greater than 60 degrees when the component channel axis MA extends through the first component opening 113 and the second component opening 115. In some examples, when the component channel axis MA extends through the first component opening 113 and the second component opening 115, the bearing surfaces 144, 146 are substantially perpendicular to the component channel axis MA.

[0091] In an example, the locking tail 114 and / or the bearing surfaces 144, 146 are configured such that when the locking tail 114 is in the locked configuration relative to the locking recess boundary 124 (as Figure 10As shown), movement of the locking tail 114 along the second axial direction A2 is restricted and / or substantially prevented. The bearing surfaces 144, 146 can be configured to contact the locking tail 114 to restrict and / or substantially prevent movement of the locking tail 114 along the second axial direction A2. For example, the bearing surfaces 144, 146 can be configured to contact the locking tail 114 when the locking tail is in a locked configuration relative to the locking recess boundary 124 (as Figure 10 shown) and located at the second point P2 to restrict and / or substantially prevent movement of the locking tail 114 from the second point P2 to the first point P1.

[0092] Accordingly, the locking tail 114 and / or the locking recess boundary 124 can be configured such that when the locking tail 114 is in an unlocked configuration, the locking tail 114 can move along the first axial direction A1 through the member channel 116 from the first point P1 to the second point P2 (e.g., caused by movement of the handle portion 99). The locking tail 114 can transition from the Figure 8 unlocked configuration at the second point P2 (e.g., due to torque applied by the handle portion 99) to the Figure 10 locked configuration. When the locking tail 114 is in the locked configuration, the bearing surfaces 144, 146 can contact the locking tail 114 to restrict and / or substantially prevent movement of the locking tail 114 along the second axial direction from the second point P2 to the first point P1. In an example, the handle portion 99 transmits a force FS ( Figure 6 , Figure 7 ) to the locking tail 114 such that the locking tail 114 applies a force FL on the bearing surfaces 144, 146, so that the contact between the locking tail 114 and the bearing surfaces 144, 146 is substantially maintained.

[0093] In an example, the locking tail 114 is defined by a body 148 (“locking tail body 148”) coupled to the handle portion 99. The locking tail 148 may define a first side 150 (“first tail side 150”) and a second side 152 (“second tail side 152”) that is substantially opposite the first tail side 152. In some examples, the locking tail 148 is a substantially elongated member having a first tail side 150 and a second tail side 152, the first tail side substantially defining and / or including a first end of the elongated body and the second tail side substantially defining and / or including a second end of the elongated body opposite the first end. In an example, the locking tail 114 is configured such that at least a portion of the locking tail body 148 is between the first tail side 150 and the second tail side 152. In an example, the locking tail body 148 defines a first cross-sectional dimension T1 (e.g., width) between the first tail side 150 and the second tail side 152. In some examples, the locking tail body 148 defines a second cross-sectional dimension T2 (e.g., height) that is orthogonal to and less than the first cross-sectional dimension T1.

[0094] The support member body 106 and / or the member channel boundary 117 may define a third cross-sectional dimension T3 (e.g., width) of the first member opening 113. In some examples, the support member body 106 and / or the member channel boundary 117 define a fourth cross-sectional dimension T4 (e.g., height) of the first member opening 113 that is orthogonal to and less than the third cross-sectional dimension T3.

[0095] The locking tail 114 and / or the member channel boundary 117 may be configured such that when the first cross-sectional dimension T1 and the third cross-sectional dimension T3 define a first angle (which may include an angle of substantially zero degrees when the first cross-sectional dimension T1 is substantially parallel to the third cross-sectional dimension T3), the locking tail 114 may pass through the first member opening 113 and the member channel 116. The locking tail 114 and / or the member channel boundary 117 may be configured such that when the intersection of the first cross-sectional dimension T1 and the third cross-sectional dimension T3 defines a second angle different from the first angle, the support member body 106 substantially prevents the locking tail 114 from passing through the first member opening 113 and the member channel 116. In an example, the first angle and / or the second angle is the angle between a direction vector parallel to or coincident with the first cross-sectional dimension T1 and a direction vector parallel to or coincident with the third cross-sectional dimension T3.

[0096] The support member body 106, the member channel boundary 117, and / or the locking recess boundary 124 may define a fifth cross-sectional dimension T5 (e.g., width) of the second member opening 115. In an example, the support member body 106, the member channel boundary 117, and / or the locking recess boundary 124 define a sixth cross-sectional dimension T6 (e.g., height) of the second member opening 115, which is orthogonal to and smaller than the fifth cross-sectional dimension T5. In an example, the depth DP is a dimension of the locking recess 118 that is substantially perpendicular to the fifth cross-sectional dimension T5 and / or the sixth cross-sectional dimension T6.

[0097] The locking tail 114, the member channel boundary 117, and / or the locking recess boundary 124 may be configured such that when the first cross-sectional dimension T1 and the fifth cross-sectional dimension T5 define a third angle (which may include an angle of substantially zero degrees when the first cross-sectional dimension T1 is substantially parallel to the fifth cross-sectional dimension T5), the locking tail 114 may enter the locking recess 118 and / or pass through the second member opening 115. The locking tail 114, the member channel boundary 117, and / or the locking recess boundary 124 may be configured such that when the intersection of the first cross-sectional dimension T1 and the fifth cross-sectional dimension T5 defines a fourth angle different from the third angle, the support member body 106 substantially prevents the locking tail 114 from entering the locking recess 118 and / or passing through the second member opening 115. In an example, the third angle and / or the fourth angle is the angle between a direction vector parallel to or coincident with the first cross-sectional dimension T1 and a direction vector parallel to or coincident with the fifth cross-sectional dimension T5. In some examples, when the bearing surfaces 144, 146 contact the locking tail 114 (e.g., when the locking tail 114 is disposed within the locking recess 118), the first cross-sectional dimension T1 and the fifth cross-sectional dimension T5 define the fourth angle.

[0098] In an example, the first cross-sectional dimension T1 is smaller than the third cross-sectional dimension T3 and larger than the fourth cross-sectional dimension T4. The first cross-sectional dimension T1 may be smaller than the fifth cross-sectional dimension T5 and larger than the sixth cross-sectional area T6. In some examples, the locking tail body 148 defines a tail depth DT that is perpendicular to the first cross-sectional dimension T1 and the second cross-sectional dimension T2. The tail depth DT may be smaller than the depth DP defined by the locking recess boundary 124. In some examples, the first cross-sectional dimension T1 is smaller than the first dimension A1 and / or the second dimension A2 ( Figure 6 ).

[0099] In some examples, the locking recess is configured to substantially prevent the locking tail from passing through the member channel from the first side of the member to the second side of the member or from the second side of the member to the first side of the member. The pin may be configured such that when the handle portion is inserted into the member channel in a second axial direction (e.g., a direction opposite to the compression force of the braking system), the locking tail is substantially disposed within the locking recess. The handle portion may be configured to extend into the plate channel when the locking tail is substantially disposed within the locking recess. The head portion may be configured to be coupled to the handle portion (e.g., the head portion may be a C-shaped clip) such that the elastic member applies a force on the head portion and the handle portion transfers the force to the locking tail to keep the locking tail disposed within the locking recess.

[0100] In some examples, the coupling system 95 is configured to restrict the locking tail from passing through the member channel in a first axial direction A1. The coupling system 95 may be configured such that the handle portion can pass through the member channel in a second axial direction A2 until the locking tail is substantially disposed against the locking recess boundary. The handle portion may be configured to extend into the plate channel when the locking tail is substantially disposed against the locking recess boundary. The coupling system 95 may include a head portion that is configured to be coupled to the handle portion (e.g., within the plate channel) such that the elastic member 126 applies a force FS on the head portion and the handle portion transfers the force FS to the locking tail.

[0101] For example, Figure 12 An example of a coupling system 95 including a pin 154 extending from a plate channel 156 to a member channel 158 is illustrated. Figure 12 An example of a coupling system 95 is illustrated where the support member 64, the plate member 20, the elastic member 126, and the washer 138 are illustrated in cross-section where the cutting plane is taken parallel to the page and passes through the plate member 20, the support member 64, the washer 138, and the elastic member 126. The plate channel boundary 160 defines the plate channel 156, the first plate opening 162, and the second plate opening 164. The member channel boundary 166 defines the member channel 158, the first member opening 168, and the second member opening 170. The member channel boundary 166 includes a locking recess boundary 172 that defines a locking recess 174 and a bearing surface 175. The pin 154 includes a handle portion 176, a head portion 178, and a locking tail 177. Figure 12A cross-section of the support member 64 , plate member 20 , resilient member 126 , and gasket 138 is depicted, with the section plane taken parallel to the page and passing through the plate member 20 , support member 64 , gasket 138 , and resilient member 126 . Pin 154, plate channel 156, component channel 158, plate channel boundary 160, first plate opening 162, second plate opening 164, component channel boundary 166, component channel 158, first component opening 168, second component opening 170, locking recess boundary 172, bearing surface 175, locking recess 174, handle portion 176, head portion 178 and locking tail 177 are examples of pin 97, plate channel 98, component channel 116, plate channel boundary 111, first plate opening 107, second plate opening 109, component channel boundary 117, component channel 116, first component opening 113, second component opening 115, locking recess boundary 124, bearing surfaces 144, 146, locking recess 118, handle portion 99, head portion 96 and locking tail 114, respectively.

[0102] The second component opening 170, the component channel boundary 166, and the first component opening 168 are configured to allow the shank portion 176 to pass through the second component opening 170, the component channel boundary 166, and the first component opening 168 along the second axial direction A2 (e.g., a direction from the second component surface 112 to the first component surface 110) until the locking tail 177 engages the locking recess boundary 172 (e.g., the bearing surface 175). The locking recess boundary 172 is configured to substantially prevent the shank portion 176 and the locking tail 177 from further passing along the second axial direction A2 when the locking tail 177 engages the locking recess boundary 172. For example, the locking recess boundary 172 can be configured to prevent the locking tail 177 from exiting the locking recess 174 by moving along the second axial direction A2. Thus, the coupling system 95 can be configured such that the shank portion 176 can be inserted through the component channel 158 and the plate channel 156 in the second axial direction A2 (eg, by an installer) until the locking tail 177 engages the locking recess boundary 172 .

[0103] The head portion 178 and the shank portion 176 can be configured as substantially separable components of the coupling system 95. In an example, the head portion 178 is configured to both engage with and disengage from the shank portion 176. The head portion 178 can be configured to remain substantially stationary when the head portion 178 engages with the shank portion 176. For example, the head portion 178 can include a C-clamp or other fastening component that is configured such that an installer can fasten the head portion 178 and the shank portion 176. Thus, the coupling system 95 can be configured such that after the shank portion 176 is inserted (e.g., by an installer) in a second axial direction A2 through the member passage 158 and the plate passage 156, the head portion 178 can be fastened (e.g., by an installer) to the shank portion. In an example, the resilient member 126 is configured to apply a force FS ( Figure 6 ) on the head portion 178 when the head portion 178 engages with the shank portion 176. The head portion 178 can be configured to transfer the force FS ( Figure 6 ) from the resilient member 126 to the shank portion 176 when the head portion 178 engages with the shank portion 176.

[0104] Compared with the second plate opening 109 and / or the plate passage 98 (e.g., Figure 6 ), the head portion 178 can allow for a reduction in the size (e.g., a reduction in cross-sectional diameter) of the second plate opening 164 and / or the plate passage 156. Additionally, compared with the first member opening 113 and / or the member passage 116 (e.g., Figure 6 ), the head portion 178 can allow for a reduction in the size of the first member opening 168 and / or the member passage 158. For example, the reduction in the size of the second plate opening 164, the plate passage 156, the first member opening 168, and / or the member passage 158 may be due to the avoidance of the necessity and / or ability of the locking tail 177 to pass through the plate passage 156 and the member passage 158 in a first axial direction A1. Instead, as discussed, the shank portion 176 can extend through the plate passage 156 and the member passage 158 in a second axial direction A2 such that the locking tail 114 is located within the locking recess 174, and the head portion 178 can then be engaged (e.g., by an installer) to the shank portion 176. The reduction in the size of the second plate opening 164, the plate passage 156, the first member opening 168, and / or the member passage 158 can reduce stress concentration in the plate member 20 and / or the support member 64 (e.g., the support member flange portion 103) during the operation of the braking system 12 and / or provide other advantages.

[0105] It should be understood that although the head portion 96 and the locking tail 114 are shown combined in Figures 3 to 7 , and the head portion 178 and the locking tail 177 are shown in Figure 12Coupling system 95 may include either head portion 96 or head portion 178 and either locking tail 114 or locking tail 177 .

[0106] In some examples, the coupling system 95 includes a head portion 178 in combination with the locking tail 114. For example, Figure 13 A coupling system 95 is illustrated that includes a pin 181 including a head portion 178 in combination with a locking tail 114 . Figure 13 Coupling system 95 is illustrated with plate member 20 , resilient member 126 , and gasket 138 illustrated as a cross-section, with a cutting plane taken parallel to the page and passing through plate member 20 , gasket 138 , and resilient member 126 .

[0107] The pin 181 can allow the coupling system 95 to be substantially assembled independently of the access support member 106. For example, the pin 181 can be configured such that the shank portion 176 can be extended through the plate passage 156 (e.g., in the second axial direction A2, for example, via the second plate opening 164) prior to installing the resilient member 126 and / or the head portion 178. In an example, the shank portion 176 has a sufficient length (e.g., in the first axial direction A1 and / or the second axial direction A2) such that when the shank portion 176 is extended through the plate passage 156, the shank portion 176 extends beyond (e.g., protrudes beyond) the first plate side 102 in the second axial direction A2. For example, the pin 181 can define an end 183 that is configured to extend beyond the first plate side 102 in the second axial direction A2 when the shank portion 176 is extended beyond the first plate side 102 in the second axial direction A2. Pin 181 can be configured such that resilient member 126 and / or head portion 178 can be installed when handle portion 176 extends beyond (e.g., protrudes from) first plate side 102. Thus, pin 181 can allow coupling system 95 to be substantially assembled substantially independent of any access to support member 106.

[0108] The pin 181 can be configured (e.g., by transferring torque from the handle portion 176 to the locking tail 114) to transition the locking tail 114 between a locked configuration and an unlocked configuration. In some examples, the pin 181 defines a driver 179 configured to receive torque. The driver 179 can be defined at the end 183. In an example, the driver 179 is configured to engage a tool (e.g., a screwdriver, a hex wrench, or other driver tool) and receive torque from the tool. The driver 179 can be configured to cause the handle portion 176 and the head portion 96 to transfer torque to the locking tail 114 to, for example, transition the locking tail 114 between the unlocked configuration and the locked configuration. In an example, the torque is a torque substantially about the longitudinal axis L of the handle portion 176. In an example, the handle portion 176 and / or the locking tail 114 are configured to rotate substantially about the longitudinal axis L when the driver 179 receives torque.

[0109] In an example, the braking system 12 can include a plurality of coupling systems, including the coupling system 95. Other coupling systems of the plurality of coupling systems can be configured similarly to the coupling system 95. In some examples, the plurality of coupling systems can be radially displaced from the axis A about a perimeter P defined by a support member 64 (e.g., the support member flange portion 103). In some examples, the braking system 12 is configured such that the plurality of coupling systems define a substantially circumferential pattern about the axis A. In some examples, the plurality of coupling systems can be spaced apart such that the spacing distance (e.g., arc length) between adjacent coupling systems is substantially equal about the axis A. In some examples, the plurality of coupling systems can be spaced apart such that the spacing distance (e.g., arc length) between adjacent coupling systems varies about the axis A. The spacing distance and / or the arc length can be defined in a plane substantially perpendicular to the axis A.

[0110] The disk stack 16 can include components other than Figures 2 to 11D those depicted and / or described above. For example, the disk stack 16 can include one or more rotor drive inserts configured to be at least partially inserted into drive slots of the rotor disks 66, 68, 70, 72. As another example, the disk stack 16 can include one or more spline inserts configured to be at least partially inserted into spline slots of the stator disks 74, 76, 78. As used herein, the disk stack 16 can include one or more rotor disks, such as the rotor disks 66, 68, 70, 72; one or more stator disks, such as the stator disks 74, 76, 78; and other components configured to rotate and / or translate as a substantially rigid body with at least one of the rotor disks and / or the stator disks.

[0111] The brake discs described herein (including rotor discs 66, 68, 70, 72 and stator discs 74, 76, 78) can be made of any suitable material. In some examples, the brake discs described herein can be made of metal or metal alloy (such as steel alloy). In some examples, the brake discs can be made using ceramic materials (such as ceramic composites). In some examples, the brake discs can be made of carbon-carbon composite materials. In some examples, the brake discs can be made using carbon-carbon composite materials having high thermal stability, high wear resistance, and / or stable friction characteristics. The brake discs can include carbon materials having multiple carbon fibers and a dense material. The carbon fibers can be arranged as a single layer or multiple layer structure in a woven or non-woven fabric.

[0112] As used herein, when a first part of a system (e.g., braking system 12) is substantially parallel to a second part of the system or an axis defined by the system, this can mean that the first part is parallel or nearly parallel to the second part or axis to the extent permitted by manufacturing tolerances. In some examples, when the first part is substantially parallel to the second part or axis, this can mean that a first vector defined by a first component of the system and a second vector defined by a second component or axis define an angle less than 10 degrees, in some examples less than 5 degrees, and in some examples less than 1 degree. When the first part of the system is substantially perpendicular to the second part of the system or an axis defined by the system, this can mean that the first part is perpendicular or nearly perpendicular to the second part or axis to the extent permitted by manufacturing tolerances. In some examples, when the first part is substantially perpendicular to the second part or axis, this can mean that a first vector defined by a first component of the system and a second vector defined by a second component define an angle of at least 80 degrees, in some examples at least 85 degrees, and in some examples at least 89 degrees.

[0113] As used herein, when a first part of a system (e.g., braking system 12) supports a second part of the system, this means that when the second part applies a first force on the first part, the first part responds to the first force by applying a second force on the second part. The first force and / or the second force can be a contact force and / or a long-range force. For example, the first force and / or the second force can be a mechanical force, a magnetic force, a gravitational force, or some other type of force. The first part of the system can be a part of the system or a part of a component of the system. The second part of the system can be another part of the system or another part of the same component or a different component. In some examples, when the first part of the system supports the second part of the system, this can mean that the second part is mechanically supported by the first part and / or mechanically connected to the first part.

[0114] Figure 14A flowchart exemplifying an example technique for joining a plate member and a support member using a joining system. Although the technique is described with reference to the plate member 20 and the support member 64 described herein, the technique can also be used for other components in other examples.

[0115] The technique includes: extending pins 97, 154, 181 of the joining system 95 from plate channels 98, 156 defined by the plate member 20 into member channels 116, 158 (1402) defined by the support member 64. The technique can include: extending pins 97, 154, 181 along a first axial direction A1 through first plate openings 107, 162 defined by a first plate side 102, through second plate openings 109, 164 defined by a second plate side 104, through first member openings 113, 168 defined by a first member side 110, and into locking recesses 118, 174. In an example, the technique includes: extending pins 97, 154, 181 along a second axial direction A2 through locking recesses 118, 174, first member openings 113, 168, second plate openings 109, 164, and into plate channels 98, 156. In an example, the technique includes: fastening a head portion 178 to a shank portion 176 of the pin 154.

[0116] The technique includes: engaging locking tails 114, 177 with the support member 64 using pins 97, 154, 181 (1404). In an example, when the locking tails 114, 177 engage the support member 64, the locking tails 114, 177 are disposed within the locking recesses 118, 174. When the locking tails 114, 177 engage the support member 64, the locking tails 114, 177 can engage (e.g., contact) locking recess boundaries 124, 172. In an example, when the locking tails 114, 177 engage the support member 64, the locking tails 114, 177 engage (e.g., contact) load-bearing surfaces 144, 146, 175.

[0117] The technique includes: applying a force FS on pins 97, 154, 181 using an elastic member 126 (1406). The elastic member 126 can apply the force FS on head portions 96, 178 of the pins 97, 154, 181. When the elastic member 126 applies the force FS, the head portions 96, 178 of the pins 97, 154, 181 can transfer the force FS to the shank portions 99, 176. When the elastic member 126 applies the force FS, the shank portions 99, 176 can transfer the force FS to the locking tails 114, 177. When the shank portions 99, 176 transfer the force FS, the locking tails 114, 177 can apply a force FL on the locking recess boundaries 124, 172. In an example, extending the pins 97, 154, 181 from the plate channels 98 into the member channels 116 includes: compressing the elastic member 126 using the head portion 96.

[0118] In some examples, the technique includes: using pins 97, 181 to pass a locking tail 114 through a plate channel 98 and into a locking recess 118 in a first direction A1, wherein the locking tail 114 is in an unlocked configuration relative to a locking recess boundary 124. The technique can include: using pins 97, 181 to transition the locking tail 114 from the unlocked configuration to a locked configuration relative to the locking recess boundary 124 to cause the locking tail 114 to engage the locking recess boundary 124. In an example, transitioning the locking tail 114 from the unlocked configuration to the locked configuration includes: using handle portions 99, 176 to transmit torque to the locking tail 114 about a longitudinal axis L. In an example, using handle portions 99, 176 to transmit torque includes: using a head face 119 to receive the torque.

[0119] In some examples, the technique includes: using pins 154, 181 to pass a handle portion 176 through a plate channel 156 at least through the plate channel 98 in a second direction A2. The technique can include: transitioning the locking tail 114 from the unlocked configuration to the locked configuration by using the handle portion 176 to transmit torque to the locking tail 114 about the longitudinal axis L. In an example, using the handle portion 176 to transmit torque includes: using a driver 183 to receive the torque.

[0120] In some examples, applying a force FS on pins 97, 154 includes: using an elastic member 126 to apply a force FS2 on plate channel boundaries 111, 160. In an example, the elastic member 126 applies the force FS2 on a washer 138, and the washer 138 transmits the force FS2 to the plate channel boundaries 111, 160. In some examples, the washer 138 transmits the force FS2 to the plate channel boundaries 111, 160 via a load bearing surface 136 defined by the plate channel boundaries 111, 160.

[0121] The present disclosure includes the following embodiments.

[0122] Example 1: A braking system, the braking system comprising: a plate member defining a plate passage extending from a first plate side of the plate member to a second plate side of the plate member; a support member defining a member passage extending from a first member side of the support member to a second member side of the support member; a pin, the pin comprising: a shank portion; a head portion coupled to a first end of the shank portion; and a locking tail coupled to a second end of the shank portion opposite the first end, wherein the shank portion is configured to extend from the plate passage to the member passage when the second plate side faces the first member side, and wherein when the shank portion extends from the plate passage to the member passage, the head portion is configured to be disposed within the plate passage and the locking tail is configured to engage the support member; and an elastic member configured to be disposed within the plate passage and between the head portion and the locking tail when the head portion is disposed within the plate passage and the locking tail engages the support member, wherein the elastic member is configured to apply a force on the pin in a direction from the support member to the plate member.

[0123] Example 2: The braking system according to Example 1, wherein the plate member is configured to transfer a compressive force from an actuator of the braking system to the support member, and wherein the elastic member is configured to apply the force on the pin in a direction opposite to the compressive force when the head portion is disposed within the plate passage, the locking tail engages the support member, and the plate member transfers the compressive force to the support member.

[0124] Example 3: The braking system according to Example 1 or Example 2, wherein the elastic member includes a first member end configured to apply the force on the pin and a second member end opposite the first member end, and wherein a boundary of the plate passage is configured to keep the second end substantially stationary relative to the plate member when the first member end moves relative to the plate member.

[0125] Example 4: The braking system according to any one of Examples 1 to 3, wherein the locking tail is configured to apply a force on the shank portion in a direction from the plate member to the support member when the locking tail engages the support member and the elastic member applies the force on the pin in the direction from the support member to the plate member.

[0126] Example 5: The braking system according to any one of Examples 1 to 4, the braking system further comprising a washer configured to at least partially surround the shank portion between the head portion and the locking tail, wherein the washer is configured to engage the boundary of the plate channel when the shank portion extends from the plate channel to the member channel, wherein the elastic member is configured to apply a second force to the washer in a direction from the plate member to the support member when the elastic member applies the force to the pin in the direction from the support member to the plate member.

[0127] Example 6: The braking system according to Example 5, wherein the plate member defines a bearing surface that extends from a first portion of the plate channel defining a first dimension to a second portion of the plate channel defining a second dimension smaller than the first dimension, wherein the washer is configured to engage the bearing surface when the washer engages the boundary of the plate channel.

[0128] Example 7: The braking system according to Example 5 or Example 6, wherein the elastic member is configured to compress between the washer and the head portion when the washer engages the boundary of the plate channel, the head portion is disposed within the plate channel, and the locking tail engages the support member.

[0129] Example 8: The braking system according to any one of Examples 1 to 7, wherein the member channel includes a locking recess defined by the support member, wherein the locking recess opens towards the second member side, and wherein the locking tail is configured to be disposed within the locking recess when the locking tail engages the support member and the head portion is disposed within the plate channel.

[0130] Example 9: The braking system according to Example 8, wherein the support member defines a first direction from the first member side to the second member side and a second direction opposite to the first direction, and wherein the locking recess is configured to restrict movement of the locking tail in the second direction through the member channel when the shank portion extends from the plate channel to the member channel.

[0131] Example 10: The braking system according to Example 9, wherein the locking tail is configured to establish an unlocked configuration relative to the locking recess and a locked configuration relative to the locking recess, wherein the locking recess is configured to allow movement of the locking tail in the first direction through the member channel when the locking tail is in the unlocked configuration, and wherein the locking recess is configured to restrict movement of the locking tail in the second direction through the member channel when the locking tail is in the locked configuration.

[0132] Example 11: The braking system according to Example 10, wherein the handle portion defines a longitudinal axis extending from the head portion to the locking tail, and wherein the locking tail is configured to transition between the unlocked configuration and the locked configuration when the handle portion transfers a torque about the longitudinal axis to the locking tail.

[0133] Example 12: The braking system according to any one of Examples 1 to 11, wherein the head portion is configured to engage and disengage from the handle portion, and wherein the head portion is configured to remain stationary relative to the handle portion when the head portion is engaged with the handle portion.

[0134] Example 13: The braking system according to any one of Examples 1 to 12, wherein the head portion defines a drive surface configured to face away from the handle portion when the handle portion extends from the plate channel to the member channel, and wherein the pin is configured to recess the drive surface into the plate channel relative to the first plate side when the handle portion extends from the plate channel to the member channel and the locking tail engages the support member.

[0135] Example 14: The braking system according to any one of Examples 1 to 13, wherein the locking tail is configured to pass through the plate channel at least in a direction from the first plate side to the second plate side.

[0136] Example 15: The braking system according to any one of Examples 1 to 14, the braking system further comprising: a stack of discs; an actuator, wherein the plate member is a backing plate and the support member is a torque tube, wherein the stack of discs is configured to transfer a compressive force from the actuator to the backing plate, wherein the backing plate is configured to transfer the compressive force to the torque tube, and wherein the elastic member is configured to apply the force on the pin in a direction opposite to the compressive force when the elastic member is disposed between the head portion and the locking tail and the locking tail engages the support member.

[0137] Example 16: A braking system, the braking system comprising: a backing plate defining a plate channel extending axially from a first side of the backing plate to a second side of the backing plate; a pin including: a shank portion extending through the plate channel, wherein the shank portion is configured to extend from the plate channel into a support member channel defined by a torque tube of the braking system and from a first side of the torque tube to a second side of the torque tube, wherein the second side of the backing plate is configured to face the first side of the torque tube, and wherein the backing plate is configured to transfer a compressive force from a disc stack of the braking system to the torque tube; a head portion coupled to a first end of the shank portion; and a locking tail coupled to a second end of the shank portion opposite the first end, wherein the head portion is disposed within the plate channel, and wherein the locking tail is configured to be disposed within the support member channel; a washer surrounding the shank portion between the head portion and the locking tail and engaging a boundary of the plate channel; and an elastic member surrounding the shank portion between the washer and the head portion, wherein the elastic member is configured to transfer a force in a direction opposite to the compressive force on the head portion when the elastic member is compressed between the washer and the head portion.

[0138] Example 17: The braking system according to Example 16, wherein: the locking tail is configured to establish an unlocked configuration relative to a locking recess of the torque tube and a locked configuration relative to the locking recess of the torque tube, the plate channel is configured to allow movement of the locking tail through the plate channel in a direction from the first side of the backing plate to the second side of the backing plate when the locking tail is in the unlocked configuration, and the plate channel is configured to restrict movement of the locking tail through the plate channel in the direction from the first side of the backing plate to the second side of the backing plate when the locking tail is in the locked configuration.

[0139] Example 18: The braking system according to Example 16 or Example 17, wherein the elastic member is configured to transfer a force in the direction of the compressive force on the washer when the elastic member is compressed between the washer and the head portion, and wherein the washer is configured to transfer the force to the boundary of the plate channel in the direction of the compressive force.

[0140] Example 19: A method, the method comprising: using a pin to extend a shank portion of the pin from a plate channel to a member channel, wherein the plate channel is defined by a plate member and extends from a first plate side of the plate member to a second plate side of the plate member, wherein the member channel is defined by a support member and extends from a first member side of the support member to a second member side of the support member, and wherein the second plate side faces the first member side; when the shank portion of the pin extends from the plate channel to the member channel, using the pin to position a head portion coupled to a first end of the shank portion within the plate channel; when the shank portion of the pin extends from the plate channel to the member channel and the head portion is disposed within the plate channel, using the pin to engage a locking tail with the support member, wherein the locking tail is coupled to a second end of the shank portion opposite the first end; and when the head portion is disposed in the plate channel and the locking tail engages the support member, using an elastic member between the head portion and the locking tail to apply a force on the pin in a direction from the support member to the plate member.

[0141] Example 20: The method according to Example 19, the method further comprising: using the elastic member to transmit a force to the head portion in a first direction; and using the elastic member to transmit a force to a washer engaging a boundary of the plate channel in a second direction opposite to the first direction.

[0142] Various embodiments have been described. These and other embodiments are within the scope of the following claims.

Claims

1. A braking system, the braking system comprising: a plate member defining a plate passage extending from a first plate side of the plate member to a second plate side of the plate member; a support member defining a member passage extending from a first member side of the support member to a second member side of the support member; a pin including: a shank portion; a head portion coupled to a first end of the shank portion; and a locking tail coupled to a second end of the shank portion opposite the first end, wherein the shank portion is configured to extend from the plate passage to the member passage when the second plate side faces the first member side, and wherein when the shank portion extends from the plate passage to the member passage, the head portion is configured to be disposed within the plate passage and the locking tail is configured to engage the support member; and an elastic member configured to be disposed within the plate passage and between the head portion and the locking tail when the head portion is disposed within the plate passage and the locking tail engages the support member, wherein the elastic member is configured to apply a force on the pin in a direction from the support member to the plate member.

2. The braking system according to claim 1, wherein the plate member is configured to transfer a compressive force from an actuator of the braking system to the support member, and wherein the elastic member is configured to apply the force on the pin in a direction opposite to the compressive force when the head portion is disposed within the plate passage, the locking tail engages the support member, and the plate member transfers the compressive force to the support member.

3. The braking system according to claim 1, wherein the elastic member includes a first member end configured to apply the force on the pin and a second member end opposite the first member end, and wherein a boundary of the plate passage is configured to keep the second end substantially stationary relative to the plate member when the first member end moves relative to the plate member.

4. The braking system according to claim 1, wherein the locking tail is configured to apply a force on the shank portion in a direction from the plate member to the support member when the locking tail engages the support member and the elastic member applies the force on the pin in the direction from the support member to the plate member.

5. The braking system according to claim 1, the braking system further comprising a washer configured to at least partially surround the shank portion between the head portion and the locking tail, wherein the washer is configured to engage a boundary of the plate passage when the shank portion extends from the plate passage to the member passage, and wherein the elastic member is configured to apply a second force on the washer in a direction from the plate member to the support member when the elastic member applies the force on the pin in the direction from the support member to the plate member.

6. The braking system according to claim 5, wherein the elastic member is configured to be compressed between the washer and the head portion when the washer engages the boundary of the plate channel, the head portion is disposed within the plate channel, and the locking tail engages the support member.

7. The braking system according to claim 1, wherein the member channel includes a locking recess defined by the support member, wherein the locking recess opens to the second member side, and wherein the locking tail is configured to be disposed within the locking recess when the locking tail engages the support member and the head portion is disposed within the plate channel.

8. The braking system according to claim 7, wherein the support member defines a first direction from the first member side to the second member side and a second direction opposite to the first direction, and wherein the locking recess is configured to limit movement of the locking tail through the member channel in the second direction when the shank portion extends from the plate channel into the member channel.

9. The braking system according to any one of claims 1 to 8, the braking system further comprising: a stack of discs; and an actuator, wherein the plate member is a backing plate and the support member is a torque tube, wherein the stack of discs is configured to transfer a compressive force from the actuator to the backing plate, wherein the backing plate is configured to transfer the compressive force to the torque tube, and wherein the elastic member is configured to apply the force on the pin in a direction opposite to the compressive force when the elastic member is disposed between the head portion and the locking tail and the locking tail engages the support member.

10. A method, the method comprising: extending a shank portion of a pin from a plate channel into a member channel using the pin, wherein the plate channel is defined by a plate member and extends from a first plate side of the plate member to a second plate side of the plate member, wherein the member channel is defined by a support member and extends from a first member side of the support member to a second member side of the support member, and wherein the second plate side faces the first member side; positioning a head portion coupled to a first end of the shank portion within the plate channel using the pin when the shank portion of the pin extends from the plate channel into the member channel; engaging a locking tail with the support member using the pin when the shank portion of the pin extends from the plate channel into the member channel and the head portion is disposed within the plate channel, wherein the locking tail is coupled to a second end of the shank portion opposite to the first end; and applying a force on the pin in a direction from the support member to the plate member using an elastic member between the head portion and the locking tail when the head portion is disposed in the plate channel and the locking tail engages the support member.

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