METHODS AND SYSTEMS FOR ROUTING CONDUCTORS IN ELECTRO-MECHANICAL MACHINES
An apparatus for routing conductors, such as signal carrying conductors, from within an electro-mechanical machine housing to a location outside the housing is provided. The apparatus includes a base for fitting in a first opening in the housing and securing a lower portion of the apparatus to the housing. The apparatus also includes a channel for carrying the conductors, which may be formed in a shape corresponding to a profile of a portion of the housing. The apparatus includes a fastener, such as a snap-type mechanical fastener, for securing the apparatus to the housing.
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The present invention generally relates to electrical systems and, more particularly, to routing conductors in electro-mechanical machines. In one example, the present invention provides a channel for routing conductors in a electric motor suitable for use in a hybrid vehicle.
BACKGROUNDElectro-mechanical machines are widespread. Rotating electro-mechanical machines, such as electrical motors and dynamoelectric machines (for example, alternators and generators), are particularly prevalent. Rotating electro-mechanical machines usually include a stationary member, known as a “stator,” about which a rotating member, known as a “rotor,” turns. An example of an electric motor 100 is illustrated in
Often, electrical motors include one or more feedback elements for providing status information associated with motor operation. For example, electrical motors may include electromagnetic feedback devices, such as a “resolver,” for providing positional information associated with the rotor and stator. As illustrated in
Information from feedback devices, such as resolvers and thermistors, is usually in the form of low voltage signals, which are carried by conductors from the feedback devices within the motor housing to various converters, processors, and gauges external to the housing. Typically, these conductors are routed along the inside of the motor housing and secured using an adhesive, such as epoxy. This routing technique, however, has several drawbacks. For example, the technique is usually performed manually and is difficult to implement with consistency in the production process. In addition, using epoxy to secure the conductors to the housing provides the conductors little, if any, protection from hostile conditions (e.g., high temperatures) within the motor. Moreover, motor housings are typically closely packed with various components and provide extremely limited space for routing conductors.
SUMMARYSystems, apparatus, and methods consistent with the present invention may obviate one or more of the above and/or other issues and drawbacks. Consistent with an aspect of the invention, a channel may be provided for routing conductors in an electro-mechanical machine.
Consistent with the present invention, an apparatus for routing conductors from within an electro-mechanical machine housing to a location outside the electro-mechanical machine housing may be provided. The apparatus may comprise: a base for fitting in a first opening in the housing; a routing channel for carrying the conductors; and a fastener for securing the apparatus to the housing.
Consistent with the present invention, an electro-mechanical system may be provided. The system may comprise: an electro-mechanical machine including a housing, wherein the housing includes a first opening; a feedback device, coupled to the electro-mechanical machine and located within the housing, providing through at least one conductor status information related to a status of the electro-mechanical machine; an external device for receiving from the conductor the status information; and a routing element that attaches to the housing so as to route the conductors from the feedback device within the housing to the external device through the first opening.
Consistent with the present invention, a method of routing conductors from within an electro-mechanical device to an external location may be provided. The method may comprise: generating a routing element in a shape corresponding to a portion of a housing of the electro-mechanical device; configuring the housing of the electro-mechanical device to accept the routing element; inserting the conductors through the routing element such that the conductors enter, from within the housing, a bottom portion of the routing element and exit, to the external location, a top portion of the routing element; and fastening the routing element to the housing of the electro-mechanical device.
The foregoing background and summary are not intended to be comprehensive, but instead serve to help artisans of ordinary skill understand implementations consistent with the present invention as set forth in the appended claims. In addition, the foregoing background and summary are not intended to provide any independent limitations on the claimed invention or equivalents thereof.
The accompanying drawings show features of implementations consistent with the present invention and, together with the corresponding written description, help explain principles associated with the invention. In the drawings:
The following description refers to the accompanying drawings, in which, in the absence of a contrary representation, the same numbers in different drawings represent similar elements. The implementations set forth in the following description do not represent all implementations consistent with the claimed invention. Instead, they are merely some examples of systems and methods consistent with the invention. Other implementations and embodiments may be used and structural and procedural changes may be made without departing from the scope of present invention.
System 200 may represent any electro-mechanical system in which an electro-mechanical machine is used. Non-limiting examples include automotive, material handling, marine, power generator, and lawn/garden systems and subsystems For example, system 200 may include an electrical system (for example, a charging system) in a vehicle. System 200 may include various components and accessories (not shown), depending on the application. For example, system 200 may include one or more batteries, starters, switches, fuses, lamps, radios, sensors, gauges, etc. System 200 may include one or more DC components and/or one or more AC components (single- or poly-phase).
Electro-mechanical machine 210 may include a variety of machines, such as machines that convert electrical energy into mechanical energy (e.g., AC and DC motors), machines that convert mechanical energy into electrical energy (i.e., dynamoelectric machines), meters, torquers, etc. In one embodiment, electro-mechanical machine 210 may include an electrical motor (either AC or DC) suitable for providing propulsion power. Electro-mechanical machine 210 may include or be coupled to various components known in the art, such as a housing, stator assemblies, solenoid assemblies, controllers, pulleys, belts, springs, gears, brushes, casings, brackets, valves, seals, pins, sensors, terminals, external fan assemblies, apertures, regulators, rectifiers, conductors, etc. Electro-mechanical machine 210 may also include one or more resolvers and thermistors that generate low voltage signals representing positional and temperature information.
In one particular implementation, system 200 may include a hybrid vehicle system. As used herein the term “hybrid” refers to the use of two or more sources of power. Non-limiting examples of hybrid vehicle systems include gasoline-electric systems, diesel-electric systems, steam (piston or turbine)—electric systems, and nuclear-electric systems. In such an implementation, electro-mechanical machine 220 may include an electric motor suitable for use in a hybrid drive system. In addition to electro-mechanical machine 210, system 200 may also include an additional power source (not shown), such as an internal combustion engine. Electro-mechanical machine 210 and the additional power source(s) may operate in a parallel configuration, in which both power sources provide propulsion simultaneously, or a series configuration, in which electro-mechanical machine 210 provides propulsion and the additional power source is used to power electro-mechanical machine 210. Additionally, when implemented in a hybrid vehicle application, system 200 may include various hybrid components known in the art, such as a batteries, fuel tanks, control elements, generators, a transmission, a drive train, etc.
Conductor routing element 220 may route conductors 240 from within electro-mechanical machine 210 to external devices 230. As used herein, the term “conductor” refers to any medium capable of transporting electrical energy and/or communications signals, such as an elongated strand of drawn metal (i.e., a wire) or fiber optic cable. Non-limiting examples of conductors include elongated strands (insulated or non-insulated) of platinum, silver, iron, copper, aluminum, gold, brass alloys, and bronze alloys. In one example, conductors 240 may include a plurality of conductors bundled in an insulated ribbon. Conductors 240 may be coupled to various components, such as feedback devices (e.g., resolvers, thermistors, etc.), within electro-mechanical machine 210. Conductors 240 may be destined to one or more external devices 230, which are discussed below.
Conductor routing element 220 may be constructed from various materials, such as glass-filled nylon, polypthalamade (PPA), acrylonitrile-butadiene-styrene, polyacetals, thermoplastic polyimides, polyaryletherketones, liquid crystal polymers, or any other suitable material. The particular material may vary depending on the application. The particular material may be chosen based on its flexibility and rigidity. For example, the material may need to withstand given pull forces and allow a full range of clip flexibility. The material may also be chosen based on temperature ratings. For example, the material may need to withstand temperatures of 150-180 Celsius. In one particular implementation, conductor routing element 220 may be formed from 13% glass-filled nylon. Other materials may be used and conductor routing element 220 may even be formed from a plurality of different materials.
Conductor routing element 220 may be formed using various techniques known in the art, such as molding, casting, etc. The particular forming technique used will depend on the application requirements.
Conductor routing element 220 may route, form, and protect conductors 240 originating from within electro-mechanical machine 210 and destined for external device 230. Conductor routing element 220 may attach to electro-mechanical machine 210 by way of electro-mechanical machine housing 215. Details of an exemplary implementation of conductor routing element 220, as well as its attachment to electro-mechanical machine housing 215, are provided below in connection with
Referring again to
As illustrated in
Referring to
The shape and arrangement of slot 350 and fastening opening 360 are not limited to the examples illustrated in
Referring again to
Body portion 320 may be formed so as to carry conductors from within housing 215 to a location external to the housing. As illustrated in
Body portion 320 may carry one or more conductors in channel 328, which is formed between inner face 322, outer face 324, and side face 326. In one example, channel 328 may be sized to accommodate a ribbon-type conductor bundle including seven (7) signal carrying conductors and/or ground wires. The particular shape and size of channel 328 (and therefore inner face 322, outer face 324, side face 326, and any optional additional side face) will vary depending on the application.
In one exemplary configuration, as depicted in
As mentioned above, inner face 322 and outer face 324 may run substantially parallel to each other and may be joined by a side face 326.
Referring back to
Consistent with the present invention, head portion 330 may include a fastening portion 335 for securing routing element 220 to housing 215. Fastening portion 335 may include any suitable structure or and/or medium for securing routing element 220 to housing 215. In one embodiment, fastening portion 335 may include one or more moveable and/or deformable components for mechanically fastening routing element 220 to housing 215. Fastening portion 335 may also include unmovable and/or non-deformable components (e.g., a screw or other rigid mechanical fastener) for mechanically fastening routing element to housing 215.
In alternative embodiments, fastening portion 335 may include or utilize an adhesive to secure routing element 220 to housing 215. In such alternative embodiments, fastening opening 360 may be unnecessary. Fastening portion 335 may be formed in various shapes and designs, depending on the particular application.
As illustrated in
In operation, the tapered tip portions (348, 348′) of the fastening members (343 and 343′) are inserted into fastening opening 360 of housing 215. As the fastening members are inserted into opening 360, the fastening members compress to allow head region 342 to pass through fastening opening 360. Once head region 342 passes through opening 360, the fastening members (343 and 343′) return or “snap” back to their original position, locking fastening portion 335 to housing 215.
Fastening portion 335 is not limited to the illustrated configuration, and various alternative shapes, sizes, and configurations may be used. For example, fastening portion 335 may include several (e.g., 3 or 4) fastening members. In addition, the shape of the fastening member shafts (e.g., 346, 346′) may be cylindrical, hemispherical, semi-circular, rectangular, etc. Also, the lobes (e.g., 347, 347′) may be arrow-shaped, mushroom-shaped, cone-shaped, pyramid shaped, etc. Further, the fastening members (e.g., 343, 343′) may not be joined at a base and instead be completely separated by continuous space 344.
As discussed above, the various dimensions of conductor routing element 220 may vary depending on the particular application.
For purposes of explanation only, aspects of system 200, including conductor routing element 220, are described with reference to the elements and components illustrated in
Method 500 may begin by forming conductor routing element 220 (step 510). Forming conductor routing element 220 may include thermoforming, injection molding, pressure forming, forging, casting and/or machining. Routing element 220 may be formed in the configuration described above in connection with
Method 500 may also include configuring the electro-mechanical machine to accept routing element 220 (step 520). Configuring the electro-mechanical machine may include, for example, forming a housing (e.g., 215) of the electro-mechanical machine. Forming the housing may include forging, casting and/or machining the housing to include one or more openings, such as slot 350 and fastening opening 360, for receiving conductor routing element 220. For clarity of explanation, the following discussion of method 500 refers to housing 215.
After conductor routing element 220 and housing 215 are appropriately formed, conductors requiring routing (e.g., 240, 440) may be inserted into channel 328 of routing element 220 (step 530). This phase may optionally include inserting or routing conductors through cut-out 323 of routing element 220.
Once the conductors are inserted in channel 328 of routing element 220, base portion 310 may be fitted over bottom portion 354 of housing 215 (step 540). Routing element 220 may then pivot on base portion 310 such that the tapered tip portions (348, 348′) of the fastening members (343 and 343′) are inserted into fastening opening 360 of housing 215 (step 550). As the fastening members are inserted into opening 360, the fastening members compress to allow head region 341 to pass through fastening opening 360. After head region 342 passes through opening 360, the fastening members (343 and 343′) “snap” back to their original position, locking fastening portion 335 to housing 215. Once routing element 220 is fastened to the electro-mechanical machine, the conductors may be routed out of routing element 220 to one or more external locations, such as external devices 230 (560).
Furthermore, the illustrated steps of
Also, all or part of method 500 may be performed with or without operator intervention. In one example, method 500 may be performed automatically by one or more automated machines or tools during an assembly process. In other examples, one or more steps of method 500 may be performed manually.
The foregoing description of possible implementations consistent with the present invention does not represent a comprehensive list of all such implementations or all variations of the implementations described. The description of only some implementations should not be construed as an intent to exclude other implementations. Artisans will understand how to implement the invention in the appended claims in many other ways, using equivalents and alternatives that do not depart from the scope of the following claims.
Claims
1. An apparatus for routing conductors from within an electro-mechanical machine housing to a location outside the electro-mechanical machine housing, the apparatus comprising:
- a base portion configured to fit over a bottom portion of an opening in the housing;
- a body portion including an inner face, an outer face, and a side face, wherein the inner face, the outer face, and the side face form a channel extending through the body portion that carries the conductors and corresponds in shape to a profile of a portion of the housing where the body is mounted; and
- a head portion including an output portion through which the channel extends and a fastener that fastens the apparatus to the housing, wherein the fastener includes a fastening member that compresses to fit through an opening in the housing and decompresses when inserted through the opening to secure the apparatus to the housing.
2. The apparatus of claim 1, wherein the inner face is substantially parallel to the outer face and separated from outer face by a distance, and wherein the side face is substantially perpendicular to the inner face and outer face.
3. The apparatus of claim 1, wherein the electro-mechanical machine includes an electrical motor.
4. The apparatus of claim 1, wherein the conductors include low-voltage signal carrying conductors coupled to a resolver in the housing of the electro-mechanical machine.
5. The apparatus of claim 1, wherein the conductors are coupled to a thermistor within the housing of the electro-mechanical machine.
6. The apparatus of claim 1, wherein the apparatus is constructed to withstand temperatures in the range of 150-180 C.
7. The apparatus of claim 1, wherein the apparatus is constructed from 13% glass-filled nylon.
8-24. (canceled)
25. An electro-mechanical system, comprising:
- an electro-mechanical machine including a housing, wherein the housing includes a first opening;
- a feedback device, coupled to the electro-mechanical machine and located within the housing, providing through at least one conductor status information related to a status of the electro-mechanical machine;
- an external device for receiving from the conductor the status information; and
- a routing element that attaches to the housing so as to route the conductors from the feedback device within the housing to the external device through the first opening.
26. The system of claim 25, wherein the electro-mechanical machine includes an electrical motor for use in a hybrid drive vehicle.
27. The system of claim 25, wherein the feedback device includes at least one of a thermistor and a resolver.
28. The system of claim 25, wherein the at least one conductor includes a ribbon-type bundle of conductors.
29. The system of claim 25, wherein the routing element comprises:
- base means for fitting in the first opening of the housing;
- channel means for carrying the conductors; and
- fastening means for securing the routing element to the housing.
30. The system of claim 29, wherein the housing of the electro-mechanical machine includes a second opening, and wherein the fastening means includes at least one moveable member for securing the routing element to the housing by way of the second opening.
31. The system of claim 25, wherein the routing element is formed in a shape corresponding to a profile of a portion of the housing.
32. The system of claim 25, wherein the routing element is constructed to withstand temperatures in the range of 150-180 C.
33. The system of claim 25, wherein the routing element is constructed from 13% glass-filled nylon.
34. A method of routing conductors from within an electro-mechanical device to an external location, the method comprising:
- generating a routing element in a shape corresponding to a portion of a housing of the electro-mechanical device;
- configuring the housing of the electro-mechanical device to accept the routing element;
- inserting the conductors through the routing element such that the conductors enter, from within the housing, a bottom portion of the routing element and exit, to the external location, a top portion of the routing element; and
- fastening the routing element to the housing of the electro-mechanical device.
35. The method of claim 34, wherein configuring the housing of the electro-mechanical device comprises:
- forming the housing of the electro-mechanical device to include at least one opening through which the conductors can be routed to the external location via the routing element.
36. The method of claim 35, wherein the configuring comprises forming the housing of the electro-mechanical device to include at least one opening that is used to fasten the routing element to the housing; and wherein the fastening comprises fastening the routing element to the housing of the electro-mechanical device using the at least one opening.
Type: Application
Filed: Dec 21, 2010
Publication Date: Sep 8, 2011
Applicant:
Inventor: Kyle Davidson (Fishers, IN)
Application Number: 12/974,488
International Classification: H02K 11/00 (20060101); H02K 15/00 (20060101); H02K 5/22 (20060101); H02K 5/02 (20060101);