Seat reclining assembly

Abstract

A seat recline assembly is provided herein. A seat recline assembly includes a seat back pivotally connected to a seat base and a recline mechanism connected to the seat back and the seat base. The tilt mechanism may also include a flexible cross member connected with the actuator, a first spindle, and a second spindle. The first spindle may be connected with the actuator and the second spindle may be connected with the flexible cross member. Actuation of the actuator rotates the first and second spindles to actuate the seatback relative to the seat base. The tilt mechanism may also include a first self-locking mechanism connected between the actuator and the first spindle.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to seat recline assemblies, including seat recline assemblies that can include a flexible cross member that can connect with one or more primary shafts, for example, when actuating a seat back relative to a seat base. BACKGROUND

[0002] The prior art has provided vehicle seat assemblies. Vehicle seat assemblies can include seat recline assemblies, seat trim assemblies, and the like. SUMMARY

[0003] The present disclosure includes, but is not limited to, the following embodiments:

[0004] 1. A seat recline assembly comprising: a seat back pivotally connected to a seat base; and a recline mechanism connected to the seat back and the seat base, the recline mechanism further comprising: a flexible cross member connected with an actuator; and a first primary shaft connected with the actuator and a second primary shaft connected with the flexible cross member; wherein actuation of the actuator causes the first primary shaft and the second primary shaft to rotate to actuate the seat back relative to the seat base.

[0005] 2. The seat recline assembly of any of the preceding embodiments, wherein the recline mechanism further comprises a first self-locking mechanism connected between the actuator and the first primary shaft.

[0006] 3. The seat recline assembly of any of the preceding embodiments, wherein the recline mechanism further comprises a second self-locking mechanism connected between the flexible cross member and the second primary shaft.

[0007] 4. The seat recline assembly of any of the preceding embodiments, wherein the flexible cross member engages the second self-locking mechanism to rotate the second primary shaft.

[0008] 5. The seat recline assembly of any of the preceding embodiments, wherein the flexible cross member comprises an axis of rotation, and the flexible cross member deforms about the axis of rotation.

[0009] 6. The seat recline assembly of any of the preceding embodiments, wherein the flexible cross member comprises an inner portion and an outer portion; and the inner portion at least partially rotates within the outer portion.

[0010] 7. The seat recline assembly of any of the preceding embodiments, wherein the outer portion is rigid, and the inner portion is flexible.

[0011] 8. The seat recline assembly of any of the preceding embodiments, wherein the outer portion is a protective sheath.

[0012] 9. The seat recline assembly of any of the preceding embodiments, wherein the inner portion is a wrapped wire.

[0013] 10. The seat recline assembly of any of the preceding embodiments, wherein the first and second primary shafts are disposed perpendicular to the flexible cross member.

[0014] 11. The seat recline assembly of any of the preceding embodiments, wherein the actuator is a motor.

[0015] 12. The seat recline assembly of any of the preceding embodiments, wherein the first and second primary shafts rotate in unison.

[0016] 13. The seat recline assembly of any of the preceding embodiments, wherein the first and second primary shafts actuate the seat back via first and second receiving portions, respectively; and the first and second receiving portions are fixedly connected to the seat back.

[0017] 14. The seat recline assembly of any of the preceding embodiments, wherein when the actuator is engaged, the first and second primary shafts rotate to translate the first and second receiving portions along the first and second primary shafts, respectively.

[0018] 15. A method of actuating a seat, the method comprising: providing a seat back pivotally connected to a seat base via a recline mechanism, the recline mechanism including a flexible cross member that rotates via a motor, a first primary shaft that rotates via the motor, and a second primary shaft that rotates via the flexible cross member; rotating the first primary shaft via the motor; and rotating the second primary shaft via the flexible cross member; wherein rotation of the first and second primary shafts actuates the seat back relative to the seat base.

[0019] 16. The method of any of the preceding embodiments, further comprising simultaneously rotating the first and second primary shafts via the motor and the flexible cross member.

[0020] 17. The method of any of the preceding embodiments, further comprising providing a first self-locking mechanism operably connected between the motor and the first primary shaft; and providing a second self-locking mechanism operably connected between the flexible cross member and the second primary shaft.

[0021] 18. The method of any of the preceding embodiments, further comprising limiting rotation of the seat back relative to the seat base via the first self-locking mechanism and the second self-locking mechanism.

[0022] 19. The method of any of the preceding embodiments, wherein the flexible cross member includes a flexible inner portion and a rigid outer portion, and the inner portion deforms to absorb forces.

[0023] 20. The method of any of the preceding embodiments, wherein the first primary axis and the second primary axis extend perpendicular to the flexible cross member. BRIEF DESCRIPTION OF DRAWINGS

[0024] While the claims are not limited to the specific examples described herein, an understanding of the various aspects can be obtained by a discussion of the various examples. The drawings are not necessarily to scale, and certain features can be exaggerated or hidden in the interest of clarity and conciseness. Additionally, the exemplary illustrations described herein are not exhaustive or otherwise limited in scope to the precise forms and configurations disclosed in the accompanying drawings and detailed description. The exemplary illustrations are described in detail through reference to the drawings, in which:

[0025] Figure 1 is a perspective view generally illustrating an embodiment of a seat recline assembly in accordance with the teachings of this disclosure.

[0026] Figure 2A is a perspective view generally illustrating an embodiment of a recline assembly in accordance with the teachings of this disclosure.

[0027] Figure 2B is a perspective view generally illustrating an embodiment of a recline assembly having a flexible cross member in accordance with the teachings of this disclosure.

[0028] Figure 3A is a side view generally illustrating an embodiment of a seat recline assembly having a seat back disposed in an upright position in accordance with the teachings of this disclosure.

[0029] Figure 3B is a side view generally illustrating an embodiment of a seat recline assembly having a seat back disposed in an intermediate position in accordance with the teachings of this disclosure.

[0030] Figure 3C is a side view generally illustrating an embodiment of a seat recline assembly having a seat back disposed in a reclined position in accordance with the teachings of this disclosure.

[0031] Figure 4A is a cross-sectional side view generally illustrating an embodiment of a first self-locking mechanism in accordance with the teachings of this disclosure.

[0032] Figure 4B FIG. 7 is a cross-sectional side view generally illustrating an embodiment of a second self-locking mechanism according to the teachings of this disclosure.

[0033] Figure 5A FIG. 8 is a cross-sectional side view generally illustrating an embodiment of a first end of a flexible cross member according to the teachings of this disclosure.

[0034] Figure 5B FIG. 9 is a cross-sectional side view generally illustrating an embodiment of a second end of a flexible cross member according to the teachings of this disclosure. DETAILED DESCRIPTION

[0035] Reference will now be made in detail embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings. While the present disclosure will be described in conjunction with embodiments and / or examples, it is understood that the present disclosure is not limited to these embodiments and / or examples. Rather, the present disclosure covers alternatives, modifications, and equivalents.

[0036] In embodiments, for example, as generally illustrated in Figures 1-3C the seat recline assembly 100 can include a seat back 102, a seat base 104, and / or a recline mechanism 106. The seat back 102 can be connected (e.g., rotatably connected) with the seat base 104 to facilitate actuation of the seat back 102 relative to the seat base 104. Additionally, the seat recline assembly 100 can be used in passenger vehicles (e.g., sedans, vans, SUVs, trucks, buses, trains, boats, ships, planes, not shown). The seat recline assembly 100 can be used in any other suitable situation or device, such as homes, office buildings, theaters, stadiums, recreational vehicles, commercial vehicles, and / or agricultural equipment, etc.

[0037] In some embodiments, as generally illustrated in Figure 1 the seat back 102 can be configured to move (e.g., adjust, recline, rotate, fold, collapse) and / or move back and forth along a track assembly (not shown) connected with the seat base 104. In embodiments, the seat base 104 can include or be connected with one or more other elements, components, and / or assemblies, such as a cushion or pad 108, a cushion / pad assembly, and / or a trim assembly. Additionally and / or alternatively, the seat back 102 can be connected to one or more other portions of the seat recline assembly and / or one or more portions of a vehicle (not shown). Moreover, the seat back 102 and the seat base 104 can be connected to each other via connectors, such as brackets, fasteners, and / or hinges.

[0038] According to embodiments, the reclining mechanism 106 can be generally disposed proximate an area where the seat back 102 is coupled with the seat base 104 (e.g., behind the seat back 102, below the seat base 104, etc.). Moreover, the reclining mechanism 106 can control positioning of the seat back 102 relative to the seat base 104 upon, for example, receipt of an occupant input via an arrangement disposed within / near the seat recline assembly 100. The reclining mechanism 106 (e.g., as shown in Figure 1 , Figure 2A , Figure 2B , Figure 3A , Figure 3B and Figure 3C ) can include a motor 110 and / or a flexible cross member 112. The motor 110 can be coupled with the flexible cross member 112 such that operation of the motor 110 rotationally engages the flexible cross member 112. Moreover, the flexible cross member 112 can extend along an axis, and the flexible cross member 112 can be configured to rotate about the axis. In an example, the motor 110 can be fixedly connected to a locking mechanism (e.g., a first self-locking mechanism 140). The flexible cross member 112 can extend generally in the Y direction.

[0039] In embodiments, the seat back 102 can include a first side 102A and / or a second side 102B that extend generally upright (e.g., in the Y direction). Moreover, the first side 102A can be disposed opposite the second side 102B. As generally shown, the reclining mechanism 106 can be at least partially connected between the first side 102A and the second side 102B of the seat back 102 (e.g., extending generally in the Z direction). Additionally, the seat back 102 can include one or more of a variety of support portions 102C extending between the first side 102A and the second side 102B. The support portions 102C can provide structural support for, among other things, a connected cushion member of the seat recline assembly 100, and / or the support portions 102C can provide structural support for the seat back 102 (e.g., a seat frame).

[0040] According to embodiments, for example in Figure 1 , Figure 2A and Figure 2BAs generally shown, the reclining mechanism 106 can include a first spindle 120 and / or a second spindle 122 to which the motor 110 and / or the flexible cross member 112 can be connected. Further, rotational movement of the flexible cross member 112 can cause the first spindle 120 and / or the second spindle 122 to rotate. The first spindle 120 and / or the second spindle 122 can extend in a longitudinal direction that is different from the flexible cross member 112. In embodiments, the first spindle 120 and / or the second spindle 122 can extend in a direction that is perpendicular or substantially perpendicular relative to the flexible cross member 112 (e.g., vertically). When the flexible cross member 112 is rotated via the motor 110, the flexible cross member 112 can engage / move at least one of the first spindle 120 and / or the second spindle 122 to actuate the seat back 102. The first spindle 120 and / or the second spindle 122 can include one or more threads that include a helical shape to allow the first spindle 120 and / or the second spindle 122 to drive a connecting member closer and / or further away from the flexible cross member 112 as the motor 110 rotates. Additionally, the first spindle 120 can be rotationally coupled with a first bracket 124 and / or the second spindle 122 can be rotationally coupled with a second bracket 126. The first bracket 124 and / or the second bracket 126 can include one or more of a variety of shapes and / or sizes. Further, the first bracket 124 and / or the second bracket 126 can be connected to / from the seat back 102 such that rotation of the spindles 120, 122 can move the brackets 124, 126 back and forth in a direction toward and / or away from the flexible cross member 112, which can, in turn, cause the seat back 102 to rotate relative to the seat base 104. According to embodiments, the motor 110 and the flexible cross member 112 can facilitate synchronous (e.g., or at least partially synchronous or simultaneous) movement of the first spindle 120 and / or the second spindle 122. The first bracket 124 and / or the second bracket 126 can be a loop linkage, such as a ring, a hoop, a hook, a band, a loop, a back loop, or any suitable shape configured to be disposed around the first spindle 120 and / or the second spindle 122, respectively. The motor 110 can activate / engage (e.g., rotate the first self-locking mechanism 140) to rotate the first spindle 120, and due to the helical interface between the first spindle 120 and the first bracket 124, the first bracket 124 translates along the first spindle 120. Additionally, the motor 110 can activate / engage to rotate the flexible cross member 112, causing rotation of the second spindle 122, and due to the helical interface between the second spindle 122 and the second bracket 126, the second bracket 126 translates along the second spindle 122.

[0041] In embodiments, the first spindle 120 and / or the second spindle 122 can be connected with the reclining mechanism 106 via a first self-locking mechanism 140 and / or a second self-locking mechanism 142, respectively. The first self-locking mechanism 140 and / or the second self-locking mechanism 142 can be configured to lock the position of the first spindle 120 and / or the second spindle 122, for example, during an emergency situation (e.g., when the seat reclining assembly can receive a sudden collision force). The first self-locking mechanism 140 and / or the second self-locking mechanism 142 can be configured to lock at a first locking stage and / or a second locking stage. According to embodiments, the flexible cross member 112 can be configured to absorb the collision force by bending and / or deforming (e.g., a twisting motion of the flexible cross member 112) without unlocking the self-locking mechanisms 140, 142 or compromising the functionality of the seat reclining assembly 100 (e.g., the motor 110, the flexible cross member 112, the self-locking mechanisms 140, 142).

[0042] For example, but not limited to, as generally shown in Figure 4A the first self-locking mechanism 140 can include a first gear 144 (e.g., a wheel) and / or a second gear 146 (e.g., a worm gear). The first gear 144 and / or the second gear 146 can be disposed within the first self-locking mechanism 140. Additionally, the first gear 144 can be in contact (e.g., interlocked) with the second gear 146 such that a rotation of the second gear 146 causes a rotation of the first gear 144. As can be seen, the first gear 144 and the second gear 146 can rotate about a vertical axis. The contact between the first gear 144 and the second gear 146 can include a first locking stage. As shown, a rotation of the second gear 146 causes the first gear 144 to rotate, thereby causing a rotation of the first spindle 120.

[0043] Likewise, as shown in Figure 4B the second self-locking mechanism 142 can include a first gear 152 (e.g., a wheel) and / or a second gear 154 (e.g., a worm gear). The first gear 152 and / or the second gear 154 can be disposed within the second self-locking mechanism 142. Additionally, the first gear 152 can be in contact (e.g., interlocked) with the second gear 154 such that a rotation of the second gear 154 causes a rotation of the first gear 152. As can be seen, the first gear 152 and the second gear 154 can rotate about a vertical axis. The contact between the first gear 152 and the second gear 154 can include a second locking stage. As shown, a rotation of the second gear 154 causes the first gear 152 to rotate, thereby causing a rotation of the second spindle 122. The second locking stage can limit movement due to contact between the first spindle 120 and the first receiving member 180 and / or contact between the second spindle 122 and the second receiving member 182.

[0044] The first self-locking mechanism 140 and / or the second self-locking mechanism 142 can be configured as a spindle nut on a spindle, where the helix angle between the gears can guarantee self-locking, as demonstrated via Figure 4A and Figure 4B the first gear 144 and the second gear 146. Upon identifying, sensing, and / or experiencing an external force, which can be related to a collision or a crash, the first self-locking mechanism 140 can limit the rotation of the first spindle 120 relative to the first bracket 124, thereby at least partially limiting the movement of the seat back 102. Additionally, the second self-locking mechanism 142 can limit the rotation of the second spindle 122 relative to the second bracket 126, thereby at least partially limiting the movement of the seat back 102. In further examples, the first self-locking mechanism 140 and / or the second self-locking mechanism 142 can be operated simultaneously via the motor 110. Similarly, the activation of the second self-locking mechanism 142 can responsively trigger the activation of the first self-locking mechanism 140. Either of the first locking stage (e.g., the first self-locking mechanism 140) and / or the second locking stage (e.g., the second self-locking mechanism 142) can be configured to limit the movement of the seat back 102 relative to the seat base 104.

[0045] According to embodiments, as shown in Figure 2A , Figure 2B , Figure 3A , Figure 3B and Figure 3C , the motor 110 can be connected between the first self-locking mechanism 140 and / or the second self-locking mechanism 142. The motor 110 can include one or more of a variety of shapes, sizes, and / or configurations. For example, but not limited to, the motor 110 (e.g., actuator) can be generally circular, curved, and / or cylindrical, such that it can fit within the cross member and / or the back region of the seat back 102. The first end 112’ of the flexible cross member 112 can be inserted into the motor 110. Further, the first end 112’ can be directly driven via the motor 110. The second end 112’’ (e.g., opposite end) of the flexible cross member 112 can be connected with the second self-locking mechanism 142. The reclining mechanism 106 can include any number of cross members and / or cross member portions to provide additional support to the motor 110 and other components. For example, but not limited to, the reclining mechanism 106 can include a support cross member 170, which can extend from the first self-locking mechanism 140 to the second self-locking mechanism 142. The support cross member 170 can be directly connected to the self-locking mechanisms 140, 142 or located at an area proximate to the self-locking mechanisms 140, 142.

[0046] In an embodiment, motor 110 can drive / rotate a first spindle 120 and / or a second spindle 122 to displace a first bracket 124 and / or a second bracket 126, respectively, thereby actuating a seat back 102 relative to the seat base 104. Furthermore, the first bracket 124 may include a first receiving member 180 that can at least partially receive the first spindle 120, and the second bracket 126 may include a second receiving member 182 that can at least partially receive the second spindle 122. Receiving members 180, 182 may include one or more of various shapes, sizes, and / or configurations. For example, but not limited to, receiving members 180, 182 may be annular linkage mechanisms, such as rings, hoops, hooks, belts, loops, loops, or any suitable shape, configured to be arranged about spindles 120, 122 respectively, such that when spindles 120, 122 are rotated via motor 110, receiving members 180, 182 translate along spindles 120, 122. Receiving members 180, 182 may be cylindrical to at least partially receive spindles 120, 122. Receiving members 180, 182 may include threaded inner surfaces that may mate with the threaded outer surfaces of spindles 120, 122. Therefore, when motor 110 and / or flexible lateral member 112 engages self-locking mechanisms 140, 142 to rotate spindles 120, 122, supports 124, 126 may move back and forth in a direction toward and / or away from self-locking mechanisms 140, 142 (e.g., generally up / down) to actuate seat backrest 102. Additionally, first support 124 may include a first aperture 184 and / or second support 126 may include a second aperture 186. First aperture 184 and / or second aperture 186 may be configured to receive one or more of various fasteners to connect first support 124 and / or second support 126 to seat backrest 102.

[0047] Additionally, the first support 124 may include a first end stop 188A and / or a second end stop 188B. The first end stop 188A and / or the second end stop 188B may correspond to the minimum / maximum range of motion of the seat back 102. For example, but not limited to, when the first receiving member 180 contacts the first end stop 188A, the seat back 102 may be positioned in an inclined position (e.g., as shown in the image). Figure 3C (The third position shown). When the first receiving member 180 contacts the second end stop 188B, the seat back 102 can be positioned in an upright position (e.g., as shown). Figure 3A The first position shown); and furthermore, when the first receiving member 180 is not in contact with the first end stop 188A or the second end stop 188B, the seat back 102 can be positioned in an intermediate position (e.g., a partially tilted second position between an upright position and a reclining position).

[0048] In another embodiment, when the second receiving member 182 contacts the first end stop 190A, the seat back 102 may be positioned in a third position corresponding to the tilted position. When the second receiving member 182 contacts the second end stop 190B, the seat back 102 may be positioned in a first position corresponding to the upright position; and furthermore, when the second receiving member 182 is not in contact with either the first end stop 190A or the second end stop 190B, the seat back 102 may be positioned in an intermediate position (e.g., a partially tilted third position between the upright and tilted positions).

[0049] Back Figure 2A and Figure 2B In the embodiment shown, the motor 110 can be configured in a first direction ( Figure 2A ) and / or the second direction ( Figure 2B Actuation of motor 110 in the first direction can rotate flexible transverse member 112 to at least partially engage self-locking mechanisms 140, 142 and / or spindles 120, 122. Actuation of motor 110 in the first direction can rotate / drive first spindle 120 and / or second spindle 122 clockwise, which can remove first support 124 and / or second support 126 from flexible transverse member 112 (e.g., Figure 2A (For example, moving the seat back 102 from a reclined position to a partially reclined position, or from a partially reclined position to an upright position).

[0050] Furthermore, actuation of motor 110 in the second direction can rotate flexible transverse member 112 to at least partially engage self-locking mechanisms 140, 142 and / or spindles 120, 122. Actuation of motor 110 in the second direction can rotate / drive first spindle 120 and / or second spindle 122 counterclockwise, which can move first support 124 and / or second support 126 toward flexible transverse member 112 (e.g., Figure 2B (For example, moving the seat back 102 from an upright position to a partially reclined position, or from a partially reclined position to a reclined position).

[0051] According to embodiments, the flexible cross member 112 can be configured to bend, flex, deform, and / or rotate. Generally, the flexible cross member 112 can be configured to bend and / or flex when the self-locking mechanisms 140, 142 control / limit rotation of the seat back 102. The flexible cross member 112 can include an inner portion 112A and an outer portion 112B. The inner portion 112A can be configured to rotate / twist with actuation / engagement of the motor 110 and, in addition, can not cause rotation / twist of the outer portion 112B. The inner portion 112A can not be fixedly connected with the outer portion 112B such that the inner portion 112A can rotate without rotating the outer portion 112B. Due to the possibility of the seat recline assembly 100 experiencing external crash forces, the first end 112’ and the second end 112” can rotate / twist different amounts due to the flexible nature of the flexible cross member 112 to absorb such external crash forces. For example, the first end 112’ of the flexible cross member 112 can rotate to a first extent and / or the second end 112” of the flexible cross member 112 can rotate to a second extent. The first extent and the second extent of rotation can be different and, in embodiments, the second end 112” of the flexible cross member 112 can rotate less than the first end 112’ of the flexible cross member 112. In addition, the first end 112’ of the flexible cross member 112 and the second end 112” of the flexible cross member 112 can rotate different amounts / degrees without compromising the functionality of the flexible cross member 112 and / or the self-locking mechanisms 140, 142. The flexible cross member 112 can facilitate a whiplash score (e.g., such as a score related to the Neck Disability Index (NDI)) of the seat recline assembly 100 to be greater than about 1.6.

[0052] According to examples, the inner portion 112A can be mechanically coupled with the second self-locking mechanism 142 and / or the second main shaft 122 such that rotation of the inner portion 112A can cause rotation of the second main shaft 122. Engagement / actuation of the motor 110 can cause rotation of the inner portion 112A.

[0053] As can be seen in Figure 5A The first end 112’ of the inner portion 112A can be connected with a first receiving interface 192, which is connected with the motor 110, where the motor 110 can be further coupled with the first self-locking mechanism 140. The first receiving interface 192 can be configured to at least partially receive a portion of the flexible cross member 112.

[0054] As can be seen in Figure 5A and Figure 5BAs generally shown, a first end 112’ of the inner portion 112A can be connected with the first receiving interface 192, and a second end 112” (e.g., opposite end) of the inner portion 112A can be connected with the second self-locking mechanism 142 via the second receiving interface 194. The second receiving interface 194 can extend from the second gear 154, and / or the second receiving interface 194 can be an aperture for at least partially receiving the flexible cross member 112.

[0055] According to embodiments, the inner portion 112A of the flexible cross member 112 can include a spiral flock around an exterior of the inner portion 112A (e.g., which can facilitate low friction rotation). In examples, a first width of the inner portion 112A (e.g., generally in a middle region of the flexible cross member) can be greater than a second width of the inner portion 112A at the first end 112’ and / or the second end 112”. Due to the absorbent nature of the flexible cross member 112, the flexible cross member 112 can generally increase a natural frequency of the seat recline assembly 100 (e.g., increase a modal by about 7 Hz).

[0056] According to embodiments, the inner portion 112A can be composed of and / or include a steel material (e.g., a spiral wound wire) that is adapted to twist / bend while transmitting torque. Further, the outer portion 112B can include a protective sheath, and / or can help prevent the inner portion 112A from being damaged. The outer portion 112B can include a non-flexible material that can protect the inner portion 112A, for example, the outer portion 112B can include a plastic material. The inner portion 112A and / or the outer portion 112B can include a variety of shapes, sizes, and / or configurations. For example, but not limited to, the inner portion 112A can include a generally rectangular / square profile (e.g., cross-section) at its ends 112’, 112”, and / or the outer portion 112B can include a generally circular profile (e.g., cross-section) at its middle portion.

[0057] In examples, when the flexible cross member 112 is driven via the motor 110, the inner portion 112A can bend, flex, and / or deform while the outer portion 112B remains rigid. The inner portion 112A can bend / rotate about its rotational axis to absorb forces exerted on the flexible cross member 112 while engaging the second self-locking mechanism 142. The flexible cross member 112 can be configured for power transmission. For example, but not limited to, the flexible cross member 112 can bend / deform rotationally, i.e., the first end 112’ can rotate simultaneously with the second end 112” due to the flexible nature of the inner portion 112A (e.g., in a crash situation where forces are exerted onto the seat back 102).

[0058] Returning to the embodiment shown in Figure 3A , Figure 3B and Figure 3C , the seat back 102 can be moved between a first position, a second position, and / or a third position. Figure 3A The seat back 102 is shown disposed in a first position corresponding to an upright position, with the first receiving member 180 in contact with the second end stop 188B. In the upright position, the seat back 102 can form an angle a1 with respect to a portion of the seat base 104. For example, the angle a1 can be about 100 degrees or greater or less. As the motor 110 is rotated in the clockwise direction, the angle between the seat back 102 and the seat base 104 can increase. The seat back 102 can be transitioned to a second position, such as shown in Figure 3B , for example, a partially reclined position. In the second position, i.e., the partially reclined position, the seat back 102 can form an angle a2 with respect to a portion of the seat base 104. The angle a2 is greater than the angle a1. For example, the angle a2 can be about 110 degrees or greater or less. When the seat back 102 is disposed in the second position, the first receiving member 180 can not be in contact with the first end stop 188A and the second end stop 188B.

[0059] According to embodiments, as the motor 110 is rotated in the clockwise direction, the seat back 102 can be transitioned to a third position, such as shown in Figure 3C , for example, a fully reclined position. As the motor 110 is rotated in the clockwise direction, the angle between the seat back 102 and the seat base 104 can increase. In the fully reclined position, the seat back can form an angle a3 with respect to a portion of the seat base 104. The angle a3 is greater than the angle a2. For example, the angle a3 can be about 120 degrees or greater or less. In the third position, the first receiving member 180 can be in contact with the first end stop 188A.

[0060] In embodiments, the seat back 102 can be transitioned between the third position and the second position, and then further transitioned to the first position by rotating the motor 110 in the counterclockwise direction. As the seat back 102 is moved between the first position, the second position, and the third position, the seat recline assembly 100 can include a first resilient member 196 and / or a second resilient member 198 connected between the seat back 102 and the seat base 104 to assist in gradual transitioning between the plurality of positions, for example, as generally shown in Figure 1 . Additionally, the first resilient member 196 and / or the second resilient member 198 can be configured to reduce a free play between the seat back 102 and the seat base 104. The first resilient member 196 and / or the second resilient member 198 can be in the form of a spring element.

[0061] The present disclosure also includes, but is not limited to, the following embodiments:

[0062] 1. A seat recline assembly comprising: a seat back pivotally connected to a seat base; and a recline mechanism connected to the seat back, the recline mechanism further comprising: a flexible cross member; a first primary shaft and a second primary shaft connected with the flexible cross member; and a motor coupled to the flexible cross member; wherein the motor rotates the flexible cross member to engage at least one of the first primary shaft and the second primary shaft to actuate the seat back relative to the seat base.

[0063] 2. The seat recline assembly of any of the preceding embodiments, wherein the recline mechanism further comprises a self-locking mechanism connected between the flexible cross member and at least one of the first primary shaft and the second primary shaft.

[0064] Various examples / embodiments for various apparatuses, systems, and / or methods are described herein. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, functioning, manufacture, and use of the examples / embodiments described in this specification and illustrated in the various drawings. It will be appreciated, however, by those having ordinary skill in the art that the examples / embodiments can be practiced without such specific details. In other instances, well-known operations, components, and elements have not been described in detail in order to avoid obscuring the examples / embodiments being described in this specification. It will be appreciated that the examples / embodiments described herein are non-limiting examples, and as such, it will be recognized that the particular structural and functional details disclosed herein are representative in nature and are not necessarily limiting, as such details can vary considerably.

[0065] Reference throughout this specification to "example", "in example", "according to example", "various embodiments", "according to embodiment", "in embodiment", or "embodiment", etc., means a particular feature, structure, or characteristic described in connection with at least one example / embodiment. Thus, the appearance of the phrase "example", "in example", "according to example", "in various embodiments", "according to embodiment", "in embodiment", or "embodiment", etc., in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, particular features, structures, or characteristics can be combined in any suitable manner in one or more examples / embodiments. Thus, the particular feature, structure, or characteristic in conjunction with one example / embodiment can be combined with features, structures, functionalities, and / or characteristics of one or more other examples / embodiments, in whole or in part, without departing from the scope of the present disclosure. Additionally, many modifications can be made to adapt a particular situation or material to the teachings of the present disclosure without departing from the scope of the present disclosure.

[0066] It should be understood that a recitation of a single element does not necessarily mean a restriction to a single such element, but can include one or more such elements. Any directional references, e.g., positive, negative, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above, below, vertical, horizontal, clockwise, and counterclockwise, are merely used for identification purposes to aid the reader and are not intended to be restrictive in any manner.

[0067] References to joining, e.g., attaching, coupling, connecting, and the like, should be construed broadly and can include intermediate members between the elements joined, relative movement between elements joined, fixed joining, movable joining, operative joining, indirect contacting, and / or direct contacting. Thus, references to joining do not necessarily mean two elements directly connected / coupled in fixed relation to one another. Connections of electrical components, if any, can include mechanical connections, electrical connections, wired connections, and / or wireless connections, etc. The use of “for example,” “for instance,” and “such as” in this specification are used in their broadest context to mean “by way of illustration,” and no other interpretation is intended. The use of “and” and “or” should be construed to be inclusive, e.g., “and / or,” unless such a construction is inherently logically inconsistent. The use of “comprising,” “including,” containing,” and “characterized by” preceding the enumeration of elements in a claim are intended to be equivalent to “consisting of” in order to cover claims that are only limited to the enumerated elements.

[0068] While processes, systems, and methods can be described herein in terms of one or more steps in a particular order, it should be understood that these methods can be practiced via different orders of steps, via concurrent execution of certain steps, via additional steps, and / or via omission of certain described steps.

[0069] All matter contained in the above description or shown in the accompanying drawings should be interpreted as illustrative and not limiting. Changes in detail or structure can be made without departing from the disclosure.

[0070] It should be understood that the controllers, systems, and / or processors as described herein can include conventional processing devices known in the art that can execute preprogrammed instructions stored in associated memory, all in accordance with the functions described herein. To the extent that the methods described herein are embodied in software, the resulting software can be stored in associated memory and can also constitute the means for performing these methods. Such systems or processors can also be of the type having ROM, RAM, RAM and ROM, and / or a combination of non-volatile and volatile memory, such that any software can be stored and also allows for storage and processing of dynamically generated data and / or signals.

[0071] It should be further appreciated that an article of manufacture according to the present disclosure can include a non-transitory computer readable storage medium having encoded thereon a computer program for implementing the logic and other functionality described herein. The computer program can include code for executing the one or more methods disclosed herein. Such an embodiment can be configured to execute via one or more processors (e.g., multi-core processors) that are integrated on a single chip or distributed across multiple chips and connected via a communications network, and the communications network can be wired and / or wireless. Code for implementing one or more features described in connection with one or more embodiments can cause a plurality of transistors to change from a first state to a second state when executed by a processor. The particular pattern of change (e.g., which transistors change state and which do not) can be determined at least in part by the logic and / or code.

Claims

1. A seat recline assembly characterized by, The seat recline assembly comprises: a seat back pivotally connected to a seat base; and a recline mechanism connected to the seat back and the seat base, the recline mechanism further comprising: a flexible cross member connected with an actuator; and a first primary shaft connected with the actuator and a second primary shaft connected with the flexible cross member; wherein actuation of the actuator rotates the first and second primary shafts to actuate the seat back relative to the seat base.

2. The seat recline assembly of claim 1, wherein, The recline mechanism further comprises a first self-locking mechanism connected between the actuator and the first primary shaft.

3. The seat recline assembly of claim 2, wherein, The recline mechanism further comprises a second self-locking mechanism connected between the flexible cross member and the second primary shaft.

4. The seat recline assembly of claim 3, wherein, The flexible cross member engages the second self-locking mechanism to rotate the second primary shaft.

5. The seat recline assembly of claim 3, wherein, The flexible cross member comprises an axis of rotation, and the flexible cross member deforms about the axis of rotation.

6. The seat recline assembly of claim 1, wherein, The flexible cross member comprises an inner portion and an outer portion; and the inner portion at least partially rotates within the outer portion.

7. A seat recline assembly as claimed in claim 6, wherein, The outer portion is rigid, and the inner portion is flexible.

8. The seat recline assembly of claim 7, wherein, The outer portion is a protective sheath.

9. The seat recline assembly of claim 7, wherein, The inner portion is a wound wire.

10. The seat recline assembly of claim 1, wherein, The first and second primary shafts are disposed perpendicular to the flexible cross member.

11. The seat recline assembly of claim 1, wherein, The actuator is a motor.

12. The seat recline assembly of claim 1, wherein, The first and second primary shafts rotate synchronously.

13. The seat recline assembly of claim 1, wherein, The first and second primary shafts actuate the seat back via first and second receiving portions, respectively; and the first and second receiving portions are fixedly connected to the seat back.

14. The seat recline assembly of claim 13, wherein, When the actuator is engaged, the first and second primary shafts rotate to translate the first and second receiving portions along the first and second primary shafts, respectively.

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