Various embodiments relate to valve assemblies and fluid systems for vehicle seat assemblies.
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the various described embodiments. However, it will be apparent to one of ordinary skill in the art that the various described embodiments may be practiced without these specific details. In other instances, well-known methods, procedures, components, circuits, and networks have not been described in detail so as not to unnecessarily obscure aspects of the embodiments.
It is to be understood that the disclosed embodiments are merely exemplary and that various and alternative forms are possible. The figures are not necessarily to scale; some features may be exaggerated or minimized to show details of particular components. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ embodiments according to the disclosure.
“One or more” includes a function being performed by one element, a function being performed by more than one element, e.g., in a distributed fashion, several functions being performed by one element, several functions being performed by several elements, or any combination of the above.
It will also be understood that, although the terms first, second, etc. are, in some instances, used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first contact could be termed a second contact, and, similarly, a second contact could be termed a first contact, without departing from the scope of the various described embodiments. The first contact and the second contact are both contacts, but they are not the same contact.
The terminology used in the description of the various described embodiments herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used in the description of the various described embodiments and the appended claims, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term “and/or” as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms “includes,” “including,” “comprises,” and/or “comprising,” when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
As used herein, the term “if” is, optionally, construed to mean “when” or “upon” or “in response to determining” or “in response to detecting,” depending on the context. Similarly, the phrase “if it is determined” or “if [a stated condition or event] is detected” is, optionally, construed to mean “upon determining” or “in response to determining” or “upon detecting [the stated condition or event]” or “in response to detecting [the stated condition or event],” depending on the context.
The terminology controller may be provided as one or more controllers or control modules for the various components and systems. The controller and control system may include any number of controllers, and may be integrated into a single controller, or have various modules. Some or all of the controllers may be connected by a controller area network (CAN) or other system. It is recognized that any controller, circuit, or other electrical device disclosed herein may include any number of microprocessors, integrated circuits, memory devices (e.g., FLASH, random access memory (RAM), read only memory (ROM), electrically programmable read only memory (EPROM), electrically erasable programmable read only memory (EEPROM), or other suitable variants thereof) and software which co-act with one another to perform operation(s) disclosed herein. In addition, any one or more of the electrical devices as disclosed herein may be configured to execute a computer program that is embodied in a non-transitory computer readable medium that is programmed to perform any number of the functions as disclosed herein.
The seat back 34 includes a frame 36 to provide structural support to cushioning and trim components 38 that are installed on the frame 36. The seat assembly 30 also provides various comfort and adjustment features, such as massage or pressure distribution. The seat assembly 30 may include a plurality of actuators such as air bladders 40 for imparting a pressurized effect upon the occupant. The air bladders 40 are supported in the seat assembly 30. The air bladders 40 may be supported directly, or indirectly upon the frame 36 of the seat back to face the seating surface of the seat back 34 and to impart the pressurized effect upon the seating surface. Likewise, the air bladders 40 may supported upon foam, a cushion, a trim component, or a suitable additional reactionary surface material. Although two air bladders 40 are illustrated, any combination or array of actuators 40 may be provided along the seating surface of the seat back 34. Likewise, a plurality of the actuators 40 may also be provided to impart the pressurized effect upon a seating surface of the seat bottom 32.
In order to operate the actuators 40, and provide a source of pressurized fluid, such as air, to the actuators, the seat assembly 30 includes a compressor 42. The compressor 42 is illustrated schematically beneath the seat bottom 32. The compressor 42 may be located anywhere within the seat assembly 30. The seat assembly 30 also includes a valve assembly 44 in fluid communication with the compressor 42 to receive the pressurized air from the compressor 42. The valve assembly 44 is also in fluid communication with the plurality of actuators 40 to relay the pressurized air to the actuators 40 as a pneumatic system. A controller 46 is also provided in the seat assembly 30 in electrical communication with the compressor 42 and the valve assembly 44 to control operation of the valve assembly 44.
Conventional valve assemblies 44 include a plurality of valves to perform a plurality of functions. Such pneumatic functions often include inflation and deflation, which can be utilized for massage, adjustment, comfort or the like. Valve assemblies 44 often have a dedicated valve per each function. Therefore, an increase in function often requires a significant increase in size, weight, and cost. Compactness is a goal of valve assemblies 44 in order to fit the valve assembly 44 within the seat assembly 30. Each valve within a valve assembly 44 often includes a solenoid, which each add significant cost and weight to the seat assembly 30. Additionally, weight reduction is often a goal in order to maximize fuel efficiency and/or energy efficiency of the associated vehicle. Therefore, a pneumatic system design may utilize a compromise or tradeoff between functionality and size/weight/cost.
The valve assembly 44 is illustrated schematically in
The valve assembly 44 includes a multiplier assembly 52 to multiply a quantity of functional outputs of the valve block 48. The multiplier assembly 52 includes a plurality of fluid outlets 54 that is a multiplied factor of the quantity of outputs of the valve block 48. For example, the multiplier assembly 52 is a doubler, and therefore, the quantity of multiplier outlets 54 is double the quantity of the valve block outlets 50. The multiplier assembly 52 may be a multiplier of any factor, such as a tripler. The multiplier assembly 52 provides a doubled function without doubling the size of the valve block 48, thereby providing a reduction in size, weight, and cost in contrast to providing two valve blocks 48.
The multiplier assembly 52 includes a manifold 56 with a plurality of inlets 58 each corresponding to one of the valve bank outlets 50. Each multiplier inlet 58 receives pressurized air from the corresponding valve bank outlet 50. A pair of multiplier outlets 54 are aligned with each multiplier inlet 58 to provide two different outlets 54 for each inlet 58.
With reference again to
In a second position of the valve body 60, such as an upper position in
By doubling the functional output of the valve bank 48, a doubled output of the valve bank 48 may be utilized. For example, each of the multiplier outputs 54 may be in fluid communication to actuate different air bladders 40. The multiplier assembly 52 may be adjustable to two different modes. The modes may be arranged as modes that are not typically performed at the same time, for example the first position may be an adjustment mode for adjusting different zones in the seat assembly 30 by inflation and deflation. The adjustment operations may include lower lumbar, middle lumbar, high lumbar, thoracis, shoulder, left bolster, right bolster, and the like. Conversely, the second position may align with a massage mode for massaging various massage bladders 40 by inflation and deflation.
The multiplier assembly 52 performs as a valve switch multiplier assembly 52. The multiplier assembly 52 includes an actuator to actuate the valve body 60. The actuator may be linear, rotary (such as a rotary stepper motor), mechanical, pneumatic, electrical, a screw drive, or the like.
Another linear actuator 96 is illustrated in
The multiplier assembly 110 also includes an outlet housing portion 118. The outlet housing portion 118 includes a substrate 120 that forms an outlet manifold with a plurality of ports 122 extending away from the substrate 120 as outlets 122. The outlets 122 are provided incrementally spaced and in a linear array. Each outlet 122 is provided with radial symmetry for attachment of tubing to convey fluid from the manifold of the multiplier assembly 110. The outlets 122 have a quantity that is a multiplied factor of the inlets 116. For example, there are two outlets 122 for each inlet 116.
A cavity 124 is provided in each substrate 114, 120 to collectively provide a fluid chamber for the manifold formed collectively by the inlet housing portion 112 and the outlet housing portion 118. Each of the housing portions 112, 118 may be formed from a structural material, such as a structural polymer. A plurality of retainers 126 are provided on the substrate 114 of the inlet housing portion 112. Each retainer 126 includes a flexible body with a central receptacle. A corresponding plurality of retainers 127 extend from the substrate 120 of the outlet housing portion 118. Each retainer 127 includes a leading edge and an abutment edge. During assembly of the housing portions 112, 118, the leading edge of the retainers 127 engage the flexible bodies of the retainers 126 to deflect the retainers 126 until the abutment edge aligns with the receptacle, whereby the flexible members retract with the abutment edge within the receptacle to retain the fasteners 127 within the retainers 126.
Referring now to
With reference now to
The valve block switching mechanism 110 can turn the eleven-function modular valve bank 48 into a twenty-two function valve bank 48, 110 without doubling the size of the valve bank 48. The doubled functionality is provided by adding one more actuator, instead of eleven more actuators. Referring again to
The multiplier assembly 150 includes an inlet housing portion 152. The inlet housing portion 152 includes a substrate 154 that forms an inlet manifold with a plurality of ports 156 extending from the substrate 154 as inlets 156. The inlets 156 are provided incrementally spaced and in a linear array. Each inlet 156 is provided with radial symmetry for attachment of tubing to convey fluid into the manifold of the multiplier assembly 150.
The multiplier assembly 150 also includes an outlet housing portion 158. The outlet housing portion 158 includes a substrate 160 that forms an outlet manifold with a two series of ports 161, 162 extending away from the substrate 160 as outlets 161, 162. The outlets 161. 162 are provided incrementally spaced and in a linear array. Each outlet 161, 162 is provided with radial symmetry for attachment of tubing to convey fluid from the manifold of the multiplier assembly 150. The outlets 161, 162 have a quantity that is a multiplied factor of the inlets 156. For example, there are two outlets 161, 162 for each inlet 156.
A plurality of sidewalls 164 extend from the base or substrate 154 of the inlet housing portion 152 to engage a plurality of sidewalls 166 that extend from the base or substrate 160 of the outlet housing portion 158. A cavity 168 is provide collectively within the substrates 154, 160 and the sidewalls 164, 166 to provide a fluid chamber for the manifolds. Each of the housing portions 152, 158 may be formed from a structural material, such as a structural polymer. During assembly of the housing portions 152, 158, the sidewalls 166 of the outlet housing portion 158 are inserted into the sidewalls 164 of the inlet housing portion 152. The sidewalls 166 are sealed to the sidewalls 164 by fasteners, adhesives, welding or the like.
The multiplier assembly 150 includes a valve bar 170 received within the cavity 168 in the housing portions 152, 158. The valve bar 170 cooperates with the housing portions 152, 158 to pivot and translate relative to the manifolds in the housing portions 152, 158. A plurality of radial extensions 172 extend from the valve bar 170 as paddles 172. An elastomeric seal 174 is provided on each of the radial extensions 172.
The first inlet housing portion 152 includes a slot 176 formed therethrough. The slot 176 is angled relative to an axial direction of the valve bar 170. A pin 178 extends radially outward from the valve bar 170. The pin 178 is received in the slot 176. The angled slot 176 provides cam surfaces whereby the pin 178 is a cam follower to convert linear motion to rotary motion. For example, as the valve bar is shifted linearly from a lower position in
At the lower position of the valve bar 170 in
The multiplier assembly 190 includes a valve bar 214 received within the chamber 194. A series of seals 216 are mounted to the valve bar 214. According to an embodiment, the seals 216 may each be provided as O-rings 216. In a first mode, depicted by an upward position of the valve bar 214 in
According to a first clause, an assembly is provided in combination with or without any of the successive clauses. The assembly comprises a manifold with an inlet, and a plurality of outlets in fluid communication with the inlet. A valve is in cooperation with the plurality of outlets and operable to a plurality of positions wherein in each of the plurality of positions, one of the plurality of outlets is open and others of the plurality of outlets are closed.
According to a second clause, a system comprises the assembly in combination with or without any of the preceding or successive clauses. A source of pressurized fluid is in fluid communication with the inlet of the manifold.
According to a third clause, the system in combination with or without any of the preceding or successive clauses, further comprises a compressor. A valve is in fluid cooperation with the compressor to receive pressurized fluid from the compressor, and is in fluid communication with the inlet of the manifold to convey the pressurized fluid to the manifold.
According to a fourth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises at least one actuator in fluid communication with the plurality of outlets of the manifold to receive a pressurized fluid distributed through the manifold.
According to a fifth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a plurality of actuators each in fluid communication with one of the plurality of outlets of the manifold to receive a pressurized fluid distributed through the corresponding outlet of the manifold.
According to a sixth clause, a seat assembly comprises a seat bottom, a seat back, the assembly in combination with or without any of the preceding or successive clauses, and an actuator oriented in the seat bottom or the seat back. The actuator is in fluid communication with the plurality of outlets of the manifold to receive a pressurized fluid distributed through the manifold.
According to a seventh clause, an assembly in combination with or without any of the preceding or successive clauses comprises a series of manifolds, each with an inlet, and a plurality of outlets in fluid communication with the inlet. A series of valves is each in cooperation with the plurality of outlets of one of the series of manifolds and operable to a plurality of positions wherein in each of the plurality of positions, one of the plurality of outlets is open and others of the plurality of outlets are closed.
According to an eighth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a housing. The housing comprises the series of manifolds therein.
According to a ninth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises an actuator in cooperation with the series of valves to actuate the series of valves to the plurality of positions.
According to a tenth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a valve bar in cooperation with the series of valves, and movable relative to the series of manifold. The valve bar is in cooperation with the actuator to shift the series of valves to the plurality of positions.
According to an eleventh clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a linear actuator, and the valve bar is translatable relative to the series of manifolds.
According to a twelfth clause, the assembly is in combination with or without any of the preceding or successive clauses wherein the valve bar further comprises the series of valves.
According to a thirteenth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a plurality of seals in cooperation with the valve bar and the series of manifolds to direct fluid to one subset of the plurality of outlets while isolating others of the plurality of outlets.
According to a fourteenth clause, the assembly is in combination with or without any of the preceding or successive clauses wherein the valve bar is pivotal relative to the series of manifolds. The seals extend radially from the valve bar.
According to a fifteenth clause, the assembly is in combination with or without any of the preceding or successive clauses wherein the actuator further comprises a rotary actuator.
According to a sixteenth clause, the assembly is in combination with or without any of the preceding or successive clauses wherein the valve bar further comprises a shaft that cooperates with the series of manifolds to pivot and translate relative to the series of manifolds.
According to a seventeenth clause, the assembly is in combination with or without any of the preceding or successive clauses wherein the shaft further comprises a cam or a follower. The series of manifolds further comprises a cam or a follower in cooperation with the cam or the follower of the shaft. The actuator further comprises a linear actuator to translate the shaft relative to the series of manifolds such that the cam and the follower pivot the shaft relative to the series of manifolds.
According to an eighteenth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a housing with the manifolds therein, wherein the shaft is received within the housing to pivot and translate relative to the series of manifolds, and wherein an angled slot is formed in the housing. A pin extends from the shaft into the angled slot to limit movement of the shaft relative to the housing and to rotate the shaft as the shaft is translated by the actuator, or to translate the shaft as the shaft is rotated by the actuator.
According to a nineteenth clause, the assembly in combination with or without any of the preceding or successive clauses further comprises a housing. The housing comprises a base, a plurality of mating sidewalls extending from the base, and the series of manifolds therein.
According to a twentieth clause, the assembly is in combination with or without any of the preceding or successive clauses wherein the plurality of outlets is arranged as a linear array.
According to a twenty-first clause, any of the preceding clauses in any combination.
While various embodiments are described above, it is not intended that these embodiments describe all possible forms according to the disclosure. In that regard, the words used in the specification are words of description rather than limitation, and it is understood that various changes may be made without departing from the spirit and scope of the disclosure. Additionally, the features of various implementing embodiments may be combined to form further embodiments according to the disclosure.