US20020056329A1 - Sliding mechanisms and systems - Google Patents
Sliding mechanisms and systems Download PDFInfo
- Publication number
- US20020056329A1 US20020056329A1 US10/044,481 US4448102A US2002056329A1 US 20020056329 A1 US20020056329 A1 US 20020056329A1 US 4448102 A US4448102 A US 4448102A US 2002056329 A1 US2002056329 A1 US 2002056329A1
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- United States
- Prior art keywords
- coupler
- drive shaft
- cam member
- quick
- cam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/32—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles
- B60P3/34—Vehicles adapted to transport, to carry or to comprise special loads or objects comprising living accommodation for people, e.g. caravans, camping, or like vehicles the living accommodation being expansible, collapsible or capable of rearrangement
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18568—Reciprocating or oscillating to or from alternating rotary
- Y10T74/188—Reciprocating or oscillating to or from alternating rotary including spur gear
- Y10T74/18808—Reciprocating or oscillating to or from alternating rotary including spur gear with rack
Definitions
- the present invention generally relates to a device for sliding objects in a controlled manner, and, more specifically, to a sliding mechanism for a “slide-out” compartment or room for a recreational vehicle, such as a camper, trailer, motor home, or the like.
- RVs such as travel trailers, campers, and motor homes offer users the opportunity to escape the rigors of everyday life and explore the world we live in. Resembling a small home on wheels, an RV is capable of transporting and comfortably sheltering people for extended periods of time. The primary benefit of such a vehicle is to enhance the camping or traveling experience by providing the comforts of home away from home. Additionally, the occupant is given the option of braving the elements, commonly known as “roughing it”, or retreating to the protection afforded by the RV. Thus, the spirit of “roughing it” may be maintained without deprivation of the full camping experience.
- RV's Although freely mobile, as the size of RV's increase, the ease of handling tends to decrease. Additionally, RV's have dimensional limits dictated by highway regulations or the specific configuration of truck bed that contains the camper. Responding to the need for more living space inside a smaller vehicle, numerous different RVs incorporate pop-up tops and/or slide-out rooms for selectively expanding the living area. Designed to be used only when the RV is parked, these rooms are retracted and stored in the interior of the vehicle during travel, and are slid outwardly when the vehicle is parked. Generally, upon parking the recreational vehicle, the pop-up tops or slide-out rooms are moved horizontally to an extended position to increase the useable interior space of the vehicle.
- slide-out rooms Several different devices have been proposed for use as slide-out rooms. Included among those proposed are expandable camper bodies and enclosures, and slidable room assemblies for RVs. Envisioned for recreational vehicle use, some older slide-out devices generally include accordion-like side walls laterally joined to a rigid end wall. Supporting the walls is a slidable frame carried on the main RV frame to slidably extend and retract from and within the main RV frame. Traditionally, a manually operated or motorized driving mechanism interconnects between the sliding frame and the main frame for expansion and retraction of the slide-out.
- Driving mechanisms for RV slide-out rooms function in many different forms. They tend to, however, generally share many of the same functional and structural characteristics.
- One variation of slide-out drive mechanisms involves the use of threaded drive screws to drive racks and pivoted cross-members that extend or retract the slide-out room.
- Another type of drive mechanism uses toothed geared drive assemblies having racks that expand or contract upon rotation of a toothed gear. Unfortunately, during the rigors of travel, the racks may become disengaged from the gears thereby preventing the slide-out room from being extended or retracted.
- the driving mechanism may not extend into the central isle of the camper, and therefore must be limited to the dimensional restrictions of the wing wall. Furthermore, people still desire access to the interior of the camper when the slide-out room is retracted. Consequently, the slide-out room and associated driving mechanism cannot substantially block the interior isle. As such, it would be beneficial to reduce the space required for the motor and drive mechanism of a slide-out room for motor homes, and especially campers and trailers.
- the sealing material is less durable than other portions of the RV, overtime, the larger sealers tend to deteriorate, thereby allowing wind, rain, sleet, or snow to creep into the drive mechanisms of the slide-out room or to damage the walls of the RV body.
- RV mechanisms for sliding a slide-out room on a recreational vehicle, such as a camper, trailer, motor home, or the like, that is compact, reliable, while reducing the possibility of infiltration of adverse weather conditions within the interior of the RV.
- a sliding systems that incorporates sliding mechanisms, driving mechanisms, and structural support elements within a single unit, that requires little space for installation and use, while being reliable.
- Another object of the present invention is to provide a sliding mechanism and system that that may be activated manually to extend and retract a slide-out compartment of a recreational vehicle.
- Yet another object of the present invention is to provide sliding mechanisms and systems that are capable being easily modified to accommodate for changes in the structural dimensions of the recreational vehicle.
- Still yet another object of the present invention is to provide a sliding mechanism and system that is capable of being utilized on various types of recreational.
- Another object of the present invention is to provide a sliding mechanism and system that minimizes the space required for both installation and use of the sliding mechanism on various types of recreational vehicles.
- Still another object of the present is to provide a sliding mechanism and system that cooperates with seals to prevent infiltration of adverse weather conditions within the interior of various types of recreational vehicle.
- a sliding mechanism for extending and retracting a slide-out compartment.
- the sliding mechanism includes a guide member having two securing flanges separated by a gap that is in communication with an interior channel.
- a slider rail is disposed within the interior channel and has a middle portion adapted with a plurality of holes formed therein. Extending from the middle portion are two securing members that cooperate with the securing flanges of the guide member to maintain slider rail within the interior channel as middle portion extends into the gap.
- a gear mechanism Disposed within the interior channel at one end of the guide element.
- gear mechanism drivingly engages with the plurality of holes in the middle portion of the slider rail to extend or retract the slide-out compartment.
- gear mechanism includes a gear shaft and a gear attached to the gear shaft.
- the gear includes a plurality of teeth that extend into the gap between the securing members to engage with the holes in the middle portion of the slider rail.
- the slider rail is continuously maintained in the interior channel and the teeth are in continuous engagement with the slider rail. This prevents the teeth from disengaging from the slider rail and being incapable of moving slideout compartment.
- the gear shaft is adapted to cooperate with one or more activation assemblies.
- the activation assembly is a manual activation assembly.
- the manual activation assembly includes a connector member that is adapted to attach to one end of the gear shaft. Located at another end of the connector member is a hand crank. As the hand crank is rotated, the connector member is rotated, thereby activating the gear mechanism to extend or retract the slide-out compartment.
- the activation assembly is a motorized activation assembly.
- the motorized activation assembly includes a quick-release arrangement that allows a motor to be engaged and disengaged through rotation of a cam lever. Motorized activation assembly allows a motor to communicate with the gear shaft to thereby allow the motor to extend and retract the slide-out compartment. Additionally, when the sliding mechanism includes two connected gear shaft, with a manual activation assembly coupled to one gear shaft and a motorized activation assembly coupled to the other gear shaft, activation of the quick-release arrangement releases engagement of the motor with one gear shaft thereby allowing operation of the manual activation assembly.
- the two gear shafts can be coupled together by a timing assembly.
- the timing assembly includes a detachable drive shaft that is capable of engaging and disengaging to the two gear shafts independently of each other.
- a system for extending and retracting a slide-out compartment incorporated within a recreational vehicle includes a base assembly that is adapted for fixably attachment to the recreational vehicle.
- the base assembly includes the guide element and a number of support elements that combine to provide structural support to both the slide-out compartment and the remaining parts of the recreational vehicle.
- the base assembly cooperates with the sliding mechanism to allow a slide-out compartment to be extended and retracted.
- two slider rails are attached together through two slider supports.
- FIG. 1 is a partial breakaway perspective view of one embodiment of a vehicle and camper within one embodiment of the sliding system of the present invention.
- FIG. 2 is a perspective view of one embodiment of a sliding system.
- FIG. 3 is an exploded perspective view of one embodiment of a base assembly of the sliding system of FIG. 2.
- FIG. 4 is an exploded perspective view of one embodiment of a sliding assembly of the sliding system of FIG. 2.
- FIGS. 5A and 5B are partial perspective views of embodiments of a slider rail for one embodiment of the sliding assembly of FIG. 4.
- FIG. 6 is an exploded perspective view of one embodiment of a roller assembly of the sliding system of FIG. 2.
- FIG. 7 is an exploded perspective view of one embodiment of a gear mechanism of the sliding system of FIG. 2.
- FIG. 8 is partial cross-sectional view of the gear mechanism of FIG. 7 installed in a base assembly of FIG. 3.
- FIG. 9 is a plan view of the sliding system of FIG. 2.
- FIG. 10 is an end view of one embodiment of a first end of a drive shaft of the sliding system of FIG. 2.
- FIG. 11 is an end view of one embodiment of a second end of a drive shaft of the sliding system of FIG. 2.
- FIG. 12 is an exploded perspective view of one embodiment of a motorized assembly that can be used with the sliding system of FIG. 2.
- FIG. 13 illustrates a cross-sectional view of one embodiment of a quick-release arrangement having a cam member in a cammed.
- FIG. 14 illustrates a cross-sectional view of the embodiment of a quick-release arrangement of FIG. 13 with the cam member in an uncammed.
- FIG. 15 is an exploded perspective view of a portion of the quick release arrangement of FIG. 13.
- FIG. 16 illustrates a cross-sectional view that depicts the relative positions of the cam member and a second end of a second gear, in the cammed orientation, of the quick-release arrangement of FIG. 13.
- FIG. 17 illustrates a cross-sectional view that depicts the relative positions of the cam member and a second end of a second gear, in the uncammed orientation, of the quick-release arrangement of FIG. 13.
- FIG. 18 is an exploded perspective view of another embodiment of a cam member that is adapted to be added to an existing motorized activation assembly.
- FIG. 19A is a cross-sectional view of another embodiment of a slider rail
- FIG. 19B is a cross-sectional view of another embodiment of a slider rail.
- the present invention relates to sliding mechanisms and systems which may be used to extend and retract a slide-out compartment incorporated within a recreational vehicle, such as but not limited to campers, trailers, motor homes, and the like.
- the sliding mechanism is configured to be compact, while being capable extending and retracting variously sized slide-out rooms or compartments to increase the living space within a recreational vehicle.
- the sliding mechanism and systems of the present incorporate numerous sliding and driving components into a single unit thereby making installation simpler and quicker, while maintaining structural support and providing additional structural support to the recreational vehicle.
- the sliding mechanisms and systems are capable of being installed on various recreational vehicles and at varying locations on the recreational vehicle without the need to substantially alter any portion of the mechanisms or components.
- the sliding mechanisms and systems of the present invention are interchangeable or may be used without modification for slide-out rooms or compartments on the right, left, front, or rear of the recreational vehicle.
- FIG. 1 depicts a vehicle 10 with a cab 12 and a vehicle bed (not shown) that supports a camper 18 .
- camper 18 has a forward portion 20 that extends over cab 12 of vehicle 10 and a rear portion 22 that extends beyond the rear of vehicle 10 .
- Camper 18 has a step configuration formed with a lower exterior wall 24 retained within the interior of the bed (not shown) and an upper exterior wall 26 that is located above the bed (not shown). Lower exterior wall 24 and upper exterior wall 26 are joined together by way of a wing wall 28 (FIG. 2) that extends over a side 16 of vehicle 10 .
- camper 18 includes a slide-out room or compartment 30 .
- slide-out compartment 30 is located intermediate between forward portion 20 and rear portion 22 of camper 18 .
- Slide-out compartment 30 may be located at the forward portion or rearward portion of the side of camper 18 .
- slide-out compartment 30 may be located at the front or rear of camper 18 .
- camper 18 may include a multiple number of slide-out compartments 30 which are located at the front, rear, and/or on both sides of camper 18 .
- slide-out compartment 30 is extended and retracted by way of a sliding system, as referenced by numeral 40 in FIG. 2.
- the configuration of sliding system 40 minimizes the space required for installation and usage of sliding system 40 to extend and retract slide-out compartment 30 , thereby increasing the available living area while providing the requisite strength and functionality to operate slide-out compartment 30 .
- Sliding system 40 includes a base assembly 42 , a gear mechanism 44 , and a slider assembly 46 .
- base assembly 42 is attached to wing wall 28 of camper 18 .
- Base assembly 42 is configured to both provide structural support for gear mechanism 44 and slider assembly 46 , while providing structural support to camper 18 .
- base assembly 42 is adapted to form the central unit of sliding system 40 upon which gear mechanism 44 and slider assembly 46 may be attached and to which portions of camper 18 are affixed.
- base assembly 42 includes support elements 50 that provide structural support to both sliding system 40 and camper 18 .
- Attached to support elements 50 are optional feet 52 (FIG. 3) that are capable of assisting in leveling and attaching support elements 50 to camper 18 .
- FIG. 2 also attached to support element 50 are a number of guide members 54 that cooperate with gear mechanism 44 and slider assembly 46 to allow slide-out room 30 to be retracted or extended as required.
- base assembly 42 is sized so that when support elements 50 are coupled to wing wall 28 , the location of support elements 50 on wing wall 28 coincides with the top of lower exterior wall 24 and the bottom portion of upper exterior wall 26 .
- Base assembly 42 and therefore support elements 50 , provide structural support to camper 18 .
- each support element 50 has a generally U-shaped cross-section having an outer portion 60 and an inner portion 62 that are separated by a base portion 64 .
- Outer portion 60 and inner portion 62 have a spaced apart relationship that allows attachment of guide members 54 , while giving strength to base assembly 42 .
- support elements 50 are capable of being attached to wing wall 28 , while also attaching to lower exterior wall 24 and upper exterior wall 26 .
- the cross-sectional configuration of support element 50 may be varied as necessary dependent on the particular use thereof, such that support element 50 may have a cross-section in the configuration of a square, rectangular, oval, trapezoidal, or the like, or combinations thereof.
- inner portion 62 includes a plurality of feet fastening holes 66 through which optional feet 52 may be coupled thereto.
- both base portion 64 and outer portion 60 include numerous fastening holes 68 which are configured to allow portions of camper 18 to be attached to support element 50 .
- fastening holes 68 in outer portion 60 may be sized to allow fasteners to attach outer portion 60 to upper exterior wall 26
- fastening holes 68 in base portion 64 may be sized to allow fasteners to attach base assembly 42 to wing wall 28 . It will be appreciated that the number, size, and dimensions of feet fastening holes 66 and fastening holes 68 may be varied as needed.
- feet fastening holes 66 and fastening holes 68 may have various other configurations that are not illustrated in FIG. 3.
- feet fastening holes 66 and fastening holes 68 may be round, oval, elliptical, elongated, square, triangular, rectangular, or the like.
- Support element 50 may be composed of various types of materials, such as by way of example and not limitation, metals, composites, plastics, or the like, as long as the material used is capable of providing support to the other components of the present invention, while giving structural support to camper 18 .
- support element 50 is substantially composed of steel.
- feet 52 are releasably attached to support element 50 . It will be appreciated by one skilled in the art that feet 52 are an optional feature of sliding system 10 . Siding system 10 is equally effective without feet 52 . Feet 52 allow support element 50 to be leveled with respect to wing wall 28 and the other components and dimensions of camper 18 , such as lower and upper exterior walls 24 , 26 , respectively. Additionally, feet 52 are particularly useful as the camper ages, because feet 52 may be utilized to assist with eliminating problems such as the camper not being level. Furthermore, feet 52 may be used to compensate for defects in the construction of camper 18 that would otherwise affect the sliding motion of slider system 40 . In one embodiment, feet 52 have a generally L-shaped cross-section.
- feet 52 have a first foot portion 70 adapted to couple to support element 50 at feet fastening holes 66 , while a second foot portion 72 is adapted to couple to wing wall 28 .
- Each foot portion 70 , 72 includes a number of apertures 74 which are adapted to cooperate with numerous types of fastener (not shown) to allow secure attachment of feet 52 to either wing wall 28 or support element 50 .
- each aperture 74 has an ovular or slotted form to allow adjustment of support elements 50 and feet 52 .
- each foot 52 may have various other cross-sectional configuration, such as square, rectangular, or the like.
- feet 52 are integrally formed with support element 50 and washers slidably engages with a fastener to vary the distance between each second foot portion 72 and wing wall 28 .
- feet 52 are in the form of a post or cylindrical member that has a threaded portion encompassing the exterior surface thereof. The threaded portion cooperates with a complementary threaded portion formed in support element 50 , to thereby level base assembly 42 .
- feet 52 may have the form of a post or cylindrical member that is spring-loaded to maintain separation between wing wall 28 and second foot portion 72 .
- guide member 54 is attached to support element 50 .
- Guide member 54 separates and gives structural support to support elements 50 , thereby providing structural integrity to base assembly 42 .
- Guide member 54 additionally, cooperates with slider assembly 46 and gear mechanism 44 to allow slider assembly 46 to be extended and retracted during operation of sliding system 40 .
- guide member 54 shown in greater detail in FIG. 3, has a generally C-shaped cross-section.
- Guide member 54 has a first side 80 and a second side 82 separated by a base 84 . Extending from first side 80 and second side 82 is a first securing flange 86 and a second securing flange 88 , respectively. First and second securing flanges 86 , 88 , respectively, are sized such that a gap 90 remains therebetween.
- the configuration of guide member 54 defines a channel along the longitudinal length thereof. In this embodiment, as illustrated in FIG. 2, guide member 54 is adapted to cooperate with gear mechanism 44 and slider assembly 46 to allow slide-out compartment 30 to be extended and retracted.
- guide member 54 has a first end 124 and a second end 126 .
- a gear mount 94 Located at first end 124 of guide member 54 is a gear mount 94 .
- a roller mount 96 Located at second end 126 is a roller mount 96 .
- gear mount 94 may be located at second end 126 and roller mount 96 may be located at first end 124 .
- both gear mount 94 and roller mount 96 may be located at any longitudinal distance along guide element 54 .
- gear mount 94 is located at first end 124 and roller mount is located at second end 126 , however, base assembly 42 is rotated 180° from that shown in FIGS. 2 and when installed on camper 18 .
- Gear mount 94 includes two bushing protrusions 98 which extend from respective surfaces of first side 80 and second side 82 .
- An axial gear shaft hole 100 passes through bushing protrusion 98 and the associated first side 80 or second side 82 .
- Axial gear shaft holes 100 are adapted to cooperate with gear mechanism 44 , and allow free rotation thereof.
- Bushing protrusions 98 and axial gear shaft holes 100 are one embodiment of structure capable of performing the function of a connecting means for coupling gearing mechanism 44 to guide member 54 . It will be appreciated by one skilled in the art that various other configurations of connecting means are possible.
- connecting means could utilize gear shaft holes 100 that have the form of a slot that extends to the end of first side 80 or second side 82 , distal from base 84 .
- the slot is capped with a securing flange that closes the open end thereof and attaches gearing mechanism 44 to guide element 54 .
- bushing protrusions 98 are detachable and secured to guide member 54 by way of one or more fasteners.
- connecting means comprises of a hole that has an interior tapered form that frictionally retains gear mechanism 44 to guide member 54 .
- Roller mount 96 includes two axially coinciding roller shaft holes 102 formed in first side 80 and second side 82 .
- Roller shaft holes 102 are capable of cooperating with the components of roller assembly 96 .
- Roller shaft hole 102 is one structure capable of performing the function of connecting means for coupling roller assembly 96 to guide member 54 .
- connecting means are capable of performing the function thereof.
- roller shaft hole 102 may be tapered to cause a friction fit with roller assembly 96 .
- roller shaft hole 102 includes protrusions similar to those of bushing protrusions 98 .
- roller shaft hole 102 is a slot.
- sliding assembly 46 is disposed in the channel defined by guide member 54 and cooperates with securing flanges 86 , 88 (FIG. 2).
- Slider assembly 46 is attached to slide-out compartment 30 , as well as being slidably engaged with the channel defined by guide member 54 and gear mechanism 44 .
- Slider assembly 46 in cooperation with guide member 54 , provides the structural support and load bearing members that carry the weight and dissipate the forces resulting from extending and retracting slide-out compartment 30 .
- slider assembly 46 includes slider rails 110 that are coupled to slider supports 112 . While FIG. 4 depicts slider assembly 46 as having two slider rails 110 and two slider supports 112 , it will be appreciated that various other numbers of slider rails 110 and slider supports 112 could be used.
- slider rail 110 has a raised middle portion 114 , with a first securing member 116 and a second securing member 118 .
- First and second securing members 116 and 118 extend outwardly from the peripheral edges of middle portion 114 .
- Securing members 116 , 118 may have various widths, so long as they are capable of cooperating with securing flanges 86 , 88 of guide members 54 to retain slider rail 110 within the channel defined by guide member 54 .
- Middle portion 114 includes a number of slots 120 that are configured to cooperate with gear mechanism 44 to allow movement of slider assembly 46 .
- each slot 120 has a generally rectangular form.
- slot 120 may be round, oval, elliptical or any combination thereof. What is important is that slot 120 be configured to cooperate with gear mechanism 44 .
- one or more of slot 120 may include a curved section that is capable of accommodating a fastener (not shown) to attach slider rail 110 to a portion of slide-out compartment 30 .
- First end 124 and second end 126 of slider rail 110 have a number of retaining holes 128 formed therein.
- retaining holes 128 include an optional threaded portion to allow slider rail 110 to be attached to slider support 112 .
- slider support 112 may be bolted, welded, riveted, or glued to slider rail 110 during fabrication or manufacture.
- Slider rail 110 b includes a first element 130 and a second element 132 .
- a slot 133 is formed through the first element 130 and second element 132 that acts as slot 120 of slider rail 110 .
- slot 133 may only passes through second element 132 and first element 132 is a solid piece of material.
- first element 130 is fixably coupled to the central portion of second element 132 such that slots in each element align to form slot 133 . Additionally, fixation of first element 130 to second element 132 leaves the sides 134 , 135 of second element 132 exposed such that sides 134 , 135 are capable of cooperating with securing flanges 86 , 88 of guide members 54 to retain slider rail 110 within the channel defined by guide member 54 . It can be appreciated by one skilled in the art that there are various other configuration of slider rails 110 and 110 b that are possible.
- slider support 112 has a generally L-shaped configuration that comprises an upper portion 136 and a side portion 138 extending therefrom. Side portion 138 is substantially perpendicular to upper portion 136 . It will be appreciated, however, that side portion 138 may extend from upper portion 136 at various other angular orientations.
- upper portion 136 of slider support 112 includes two notches 140 that are adapted to cooperated with first and second ends 124 , 126 of slider rail 110 . Surrounding each notch 140 in slider support 112 are retaining holes 128 that are configured to cooperate with retaining holes 128 in slider rail 110 .
- notches 140 and retaining holes 128 may have various dimensions and sizes so long as they assist in securely retaining slider rail 110 to slider support 112 , i.e. allow fasteners to be disposed through retaining holes 128 in upper portion 136 and into retaining holes 128 of slider rail 110 .
- both upper portion 136 and side portion 138 of slider support 112 include a number of securing orifices 144 that are formed to accommodate a fastener (not show) used to attach slider support 112 to a portion of slide-out compartment 30 .
- Securing orifices 144 may have any desirable form, such as but not limited to, circular, angular, slot-like, or the like.
- the fasteners described herein may comprise of various types of fasteners, such as but not limited to, screw, bolts, split pins, and the like.
- slider rail 110 and slider support 112 may be varied as necessary depending on the particular use thereof.
- slider rail 110 and slider support 112 may have various other configurations such as square, rectangular, or the like.
- slider rail 110 and slider support 112 may be fabricated from various types of materials, such as for example, metals, composites, plastics, fibrous material, or the like, so long as the material has sufficient strength for extending and retracting slide-out room 30 .
- slider rail 110 and slider support 112 are substantially composed of a steel material.
- roller assembly 148 includes a roller shaft 150 and a roller 152 .
- Roller shaft 150 is sized to securely fit within roller shaft holes 102 and an axial hole 164 formed through roller 152 .
- Roller shaft holes 102 and axial hole 164 are sized and configured to allow roller 152 to rotate about roller shaft 150 .
- roller shaft 150 includes two fastening grooves 154 formed in the surface thereof, which are adapted to receive fastening clips 156 . Fastening clips 156 and fastening grooves 154 assist in retaining roller shaft 150 within roller shaft holes 102 .
- roller shaft 150 is capable of performing the function of roller shaft 150 , fastening clips 156 , and fastening grooves 154 .
- roller 152 is configured to cooperate with the underside of middle portion 114 of slider rail 110 so as to self center therein.
- roller shaft 150 may be retained within roller shaft holes 102 through a friction fit and roller 152 is configured to rotate axially around roller shaft 150 .
- roller shaft 150 includes pinholes that accommodate split pins or the like, which prevent retraction of roller shaft 150 from within roller shaft holes 102 .
- Roller shaft 150 may be manufactured from various types of material, such as by way of example and not by way of limitation, metals, composites, plastics, and the like. In one embodiment, roller shaft 150 is composed of steel.
- roller 152 has a generally cylindrical configuration that includes a larger diameter portion 160 and a smaller diameter portion 162 .
- Larger diameter portion 160 of roller 152 is configured to cooperate with slider rails 110 .
- roller 152 self-centers within the channel defined by guide member 54 upon insertion of roller shaft 150 through axial hole 164 .
- Larger diameter portion 160 and middle portion 114 of slider rail 110 are configured to cooperate so as to allow roller 152 to self center. Consequently, larger portion 160 self-centers on the underside of middle portion 114 of slider rail 110 to provide smooth sliding of slider rail 110 within the channel defined by guide element 54 .
- Roller 152 is rotatably mounted within the channel defined by guide member 54 as roller shaft 150 passes through roller shaft hole 102 and locates within roller mount 96 .
- roller 152 has a length sufficient to extend across the width of the channel defined by guide member 54 . As such, roller 152 abuts against first side 80 and second side 82 to reduce movement of guide member 54 during use. Additionally, since roller 152 abuts the sides 80 , 82 of guide member 54 , larger diameter portion 160 is always in engagement with middle portion 114 of slider rail 110 . It will be appreciated that roller 152 may take various other forms such as bearing rollers, or the like.
- Roller 152 may be composed of various types of material, such as by way of example and not by way of limitation, metal, composites, plastics, and the like. In one embodiment, roller 152 is formed from a plastic material.
- gear mechanism 44 is adapted to cooperate with slider rail 110 .
- gear mechanism 44 illustrated in FIG. 7, includes a gear shaft 170 and a gear 172 .
- Gear shaft 170 is sized to securely fit within gear holes 100 of guide member 54 with the aid of bushings 174 , while being capable of freely rotating within bushings 174 .
- gear shaft 170 has a generally cylindrical configuration.
- Gear shaft 170 has a first end 180 , a second end 182 , and an intermediate portion 176 disposed there between.
- First and second ends 180 , 182 are shaped to allow driving activation assemblies and timing mechanism to be engaged thereto.
- first and second ends 180 , 182 are generally square, while intermediate portion 176 is generally cylindrical.
- gear shaft 170 , first and second ends 180 , 182 , respectively, and intermediate portion 176 may have various other cross-sectional configurations, such as by example and not limitation, hexagonal, square, octagonal, triangular, oval, or the like.
- gear shaft 170 has a generally hexagonal form with two cylindrical portions that cooperate with bushings 174 to allow free rotation of gear shaft 170 .
- Gear 172 is adapted to cooperate with gear shaft 170 .
- gear 172 has a generally cylindrical form with a plurality of teeth 190 extending outwardly from a surface thereof. Teeth 190 are configured to cooperate with slots 120 formed in slider rail 110 , as shown in FIG. 8.
- gear 172 has an axial hole 192 that is sized to cooperate with the dimensions of gear shaft 170 .
- axial hole 194 has a generally cylindrical configuration, however, various other cross-sectional shapes are possible as long as axial hole 194 and intermediate portion 176 cooperate.
- gear 172 has a retaining hole 194 that passes through gear 172 and is sized to cooperate with a retaining hole 184 formed in gear shaft 170 .
- retaining holes 184 , 194 align to accommodate a securing pin (not shown).
- the securing pin prevents gear 172 from slipping relative to gear shaft 170 as gear shaft 170 rotates to extend or retract slide-out compartment 30 .
- gear shaft 170 and axial hole 192 may have complementary shapes such that the complementary shape limits any slippage which might occur between gear shaft 170 and axial hole 192 .
- Retention clips 156 cooperate with coinciding retaining grooves 198 formed in gear shaft 170 to retain gear shaft 170 within gear shaft holes 100 .
- gear 172 is disposed in the channel defined by guide member 54 and extends into gap 90 between securing flanges 86 , 88 . Teeth 190 , therefore, engage with slots 120 of slider rail 110 .
- gear 172 may be welded, brazed, or joined to gear shaft 170 .
- gear shaft 170 may include pinholes which accommodate split pins that prevent gear shaft 170 from being retracted from gear shaft holes 100 .
- gear shaft 170 may include two gears 172 that cooperate with a slider rail having two sets of slots.
- gear 172 may be retained on gear shaft 170 , solely through the combination of retaining hole 184 , 194 and a securing pin.
- gear shaft 150 is located through gear holes 100 that are located at second end 126 of guide element 54 .
- Gear 172 , gear shaft 170 , and bushing 174 may be manufactured from various types of material, such as by way of example and not by way of limitation, metal, composites, plastics, and the like.
- gear 172 , gear shaft 170 , and bushing 174 are fabricated from steel. While in this embodiment gear 172 , gear shaft 170 , and bushings 174 are composed of the same material, this is not required.
- sliding system 40 is depicted in a fully assembled and operational form.
- Support elements 50 are coupled to guide members 54 such that guide members 54 rest upon inner portions 62 of support elements 50 .
- the ends of guide members 54 are attached to outer portions 60 of support elements 50 .
- Support elements 50 and guide members 54 combine to form a square or rectangular base assembly 42 .
- gear mechanisms 44 are coupled to respective roller 152 , such that gear 172 is substantially centered within the channel defined by guide member 54 . It will be appreciated that when assembled, roller 152 is similarly centered within the channel defined by guide element 54 . Before slider rail 110 is attached, teeth 190 of gear 172 extend between securing flanges 86 , 88 , and await engagement with slots 120 of slider rail 110 .
- slider rail 110 is located within the channel defined by guide element 54 such that securing flanges 86 , 88 of guide element 54 contact securing members 116 , 118 to retain slider 110 .
- securing members 116 , 118 cooperate with wear guides 200 coupled to securing flanges 86 , 88 .
- Wear guides 200 separate securing flanges 86 , 88 from securing members 116 , 118 .
- Wear guides 200 minimize the effects of friction and reduce wear of the securing flanges 86 , 88 and securing members 116 , 118 . It will be appreciated that wear guides 200 may be fabricated from various materials such as plastics, or the like.
- middle portion 114 of slider 110 extends through gap 90 , thereby allowing slots 120 to engage teeth 190 of gears 172 .
- teeth 190 of gear 172 remain in contact with slots 120 of slider rail 110 throughout the life of sliding system 40 .
- gear 172 disengaging from slots 120 before, during, or after slide-out compartment 30 is extended or retracted. This eliminates the problem with prior sliding mechanisms and systems that disengage during travel of the recreational vehicle, thereby requiring costly repairs and maintenance.
- slider rail 110 is moved along the channel defined by guide element 54 until the detached end of slider rails 110 extends out of guide channel 92 .
- a second slider support 112 depicted in FIG. 9, is attached to slider rail 110 to thereby form slider assembly 46 .
- Slider supports 112 prevent over extraction of slider rails 110 from the channel defined by guide member 54 , thereby preventing over extension of slide-out compartment 30 during use.
- sliding system 40 utilizes two gear mechanisms 44 located at first ends 124 of guide members 54 .
- the combination of gear mechanism 44 is considered the gearing assembly of the present invention. It may be appreciated, however, that the gearing assembly may comprise of various other numbers of gear mechanism 44 . Additionally, the location of each gear mechanism 44 may be varied so that gear mechanism 44 , and so the gearing assembly, may be at any location along the length of guide members 54 .
- the sliding system 40 as depicted herein encompasses substantially all the structural support members, sliding members, and driving elements within the interior confines of base assembly 42 .
- sliding system 40 of the present invention is compact and has a height that is minimized to reduce the gap formed between the camper's exterior walls and the slider rails 110 of sliding system 40 .
- sliding system 40 reduces the area through which wind, rain, sleet, and snow can infiltrate during use if slide-out compartment 30 .
- sliding system 40 is simple to install on a camper, thereby reducing cost and time for fabricating campers with slide-out compartments. Furthermore, sliding system 40 reduces the required space for apparatus and devices that extend and retract slide-out compartments 30 .
- gear shafts 170 of gear mechanism 44 are connected by way of a timing assembly 205 .
- Timing assembly 205 includes a drive shaft 210 and a retaining spring 212 .
- spring 212 is depicted as being on the right side of sliding system 40 , it is contemplated that spring 212 could be on the left side and have equal effectiveness.
- Drive shaft 210 has a generally elongated form with a first end 214 and a second end 216 . Each end 214 , 216 of drive shaft 210 has a respective connector recess.
- first connector recess 218 and second connector recess 220 are depicted in FIGS. 10 and 11.
- Connector recesses 218 , 220 are adapted to cooperate with the respective ends of gear shaft 170 .
- first connector recess 218 has an interior configuration having six facets formed therein.
- second connector recess 220 has an interior configuration with twelve facets formed therein.
- Each interior configuration is capable of cooperating with either end of gear shaft 170 .
- timing assembly 205 could include two retaining springs, one on each gear shaft 170 of this embodiment of sliding system 40 .
- timing assembly 205 is capable of rotating either gear mechanism 44 on either side of sliding system 40 .
- One feature of the present invention is the ability of drive shaft 210 to be disengaged with respect to one gear shaft 170 attached to one guide element 54 , while remaining engaged with a second gear shaft 170 attached to a second guide element 54 . In this manner, the timing of sliding assembly 40 and gear mechanism 44 may be adjusted, thereby compensating for any misalignment between slide-out compartment 30 and camper 18 and reducing any binding and wearing of slider rails 110 and slide-out compartment 30 .
- drive shaft 210 is pushed toward gear shaft 170 having retaining spring 212 proximal thereto.
- second end 216 of drive shaft 210 disengages second connector recess 220 (FIG. 11) from a second gear shaft 170 .
- drive shaft 210 may be rotated to turn gear shaft 170 , thereby modifying the starting position of gear shaft 170 .
- drive shaft 210 is released and first connector recess 218 (FIG. 10) engages with gear shaft 170 as retaining spring 212 extends to an extended position.
- second connector recess 220 (FIG. 11) of drive shaft 210 has twelve facets as compared to first connector recess 218 (FIG. 10) which has six. That is, drive shaft 210 may be rotated in increments of ⁇ fraction (1/12) ⁇ th of a complete rotation. It will be appreciated that connector recesses 218 , 220 may be formed with a variety of different internal facets, thereby providing a different number of increments of rotation.
- a manual activation assembly 230 is depicted in FIG. 9.
- Manual activation assembly 230 includes a connector member 232 and a hand crank 234 .
- Hand crank 234 has a generally S-shaped form with a handle 236 at one end thereof and a shaped connector end 238 distal thereto. Shaped connector end 238 releasably couples to connector member 232 .
- Connector member 232 has a first end 240 adapted to hook to gear shaft 170 and a second end 242 that cooperates with shaped connector end 238 of hand crank 234 . As such, rotational movement of hand crank 234 is translated along connector member 232 to gear shaft 170 .
- Connector member 232 may have various lengths and dimensions, so long as it is capable of cooperating with gear shaft 170 and hand crank 234 .
- connector member 232 may have a length sufficient to pass through a portion of exterior walls 24 , 26 of camper 18 to engage with gear shaft 170 on either side of sliding system 40 .
- connector member 232 may be integrally formed with hand crank 234 .
- Connector member 232 and hand crank 234 may have various configurations as long as they are capable of cooperating and can translate rotational motion to gear shaft 170 .
- sliding system 44 may incorporate a motorized activation assembly 250 .
- motorized activation assembly 250 includes a gear reduction assembly 252 and a motor 254 .
- Motor 254 is engaged to gear reduction assembly 252 .
- motor 254 includes a drive shaft 330 extending from a body thereof.
- Motor 254 may take various forms such as an electric, pneumatic, oil, gasoline, or the like. As such, one skilled in the art can identify various types of motor that may be utilized to rotate second end 292 of second gear 260 , thereby rotating gear shaft 170 to extend and retract slide-out compartment 30 .
- Gear reduction assembly 252 includes a connector plate 256 , a first gear 258 , a second gear 260 , and a connector box 266 .
- connector plate 256 has a generally square shape with a first aperture 268 and a second aperture 270 formed therein.
- Connector plate 256 further includes a plurality of retaining holes 288 located about the peripheral edge of connector plate 256 that cooperate with a plurality of fasteners (not shown) to allow connector plate 256 to be coupled to guide member 54 .
- First gear 258 Cooperating with first aperture 268 is first gear 258 .
- First gear 258 has a first end 290 and a second end 292 with a plurality of teeth 294 located therebetween.
- First end 290 is adapted to be disposed within first apertures 268 of connector plate 256 , while second end 292 cooperates with connector box 266 .
- First end 290 includes an interior recess 296 that engages with gear shaft 170 , such that rotational movement of first gear 258 rotates gear shaft 170 .
- interior recess 296 may have various forms and dimensions, so long as it is capable of engaging with gear shaft 170 .
- Second gear 260 is engaged with both first gear 258 and connector plate 256 .
- Second gear 260 has a first end 300 , an elongated second end 302 , and a plurality of teeth 304 disposed therebetween.
- First end 300 cooperates with second aperture 270 of connector plate 256
- second end 302 cooperates with connector box 266 .
- Second end 302 is further adapted to cooperate with motor 254 so that rotational motion induced by motor 254 is translated to teeth 304 that are engaged with teeth 294 of first gear 258 .
- Second end 302 of second gear 260 may have various forms as known by one skilled in the art.
- Connector box 266 In communication with second end 292 of first gear 258 and second end 302 of second gear 260 is connector box 266 .
- Connector box 266 includes a body portion 280 , a flange 282 mounted to body portion 280 , and a cam lever 332 .
- Cam lever 332 is the only component of a quick release arrangement 330 (FIG. 13) that is visible.
- Attached to one end of body portion 280 is flange 282 .
- Flange 282 in one embodiment, has the same general configuration as connector plate 250 , i.e., includes a first aperture 268 , a second aperture 270 , and a plurality of retaining holes 274 formed about a periphery thereof.
- connector box 266 may have various other configurations, such as round, hexagonal, rectangular, octagonal, trapezoidal, or the like. Additionally, connector box 266 may be fabricated from various types of material, such as plastics, composites, metals, or the like.
- Body portion 280 of connector box 266 has a generally square cross-section with an interior 281 .
- Interior 281 of body portion 280 is adapted to accommodate structures described in U.S. patent application Ser. No. 08/887,197 entitled “Quick Release Arrangement for a Camper Jack System,” the disclosure of which is incorporated by this reference. Therefore, interior 281 includes quick release arrangement 330 (FIG. 13) that connects and releases the driving force of motor 254 to second end 302 of second gear 260 .
- FIG. 13 depicts a cross-sectional view of one embodiment of quick release arrangement 330 .
- a coupler 334 having a bore 335 therethrough is adapted at a top end 336 to engage a lower end 338 of motor drive shaft 340 .
- Motor drive shaft 340 is rotatable on its longitudinal axis but is fixed against vertical movement within body portion 280 .
- Motor drive shaft 340 extends a short distance from coupler 334 and passes through an opening surrounded by a stationary flange 352 into a compartment for coupling with motor 254 in motor housing 255 , such that motor drive shaft 340 is directionally rotated by motor 254 .
- Motor 254 resists movement in an opposite direction to the motor's directional setting, and so provides brake control as well as drive control to second end 302 of second gear 260 .
- Coupler 334 has a bottom end 342 adapted to slidably engage second end 292 of second gear 260 .
- Second gear 260 is also rotatable on its longitudinal axis but is fixed against longitudinal movement within connector box 266 .
- Coupler 334 is configured to securely engage motor drive shaft 340 and second end 302 of second gear 260 such that, when coupled, motor drive shaft 340 and second gear 260 rotate together through operation of motor 254 .
- coupler 334 is adapted to slide along the longitudinal axis of motor drive shaft 340 and second end 302 of second gear 260 .
- coupler 334 is constructed of a strong and durable metal material.
- quick release arrangement 330 is used with manual activation assembly 230 or some other manual activation means that do not generate as much torque, a very strong plastic or nylon material could be used, if desired.
- second end 302 of second gear 260 is configured to have beveled edges 341 that correspond to beveled edges 343 formed on a bottom end 342 of coupler 334 such that slidable engagement of coupler 334 and second gear 260 is facilitated.
- a spring 348 is positioned to bias coupler 334 to engage with second end 302 of second gear 260 . It will be appreciated that various other means for effecting the spring bias force could be used.
- flange 352 forms the stop for a top end of spring 348
- a protruding shoulder 350 formed on coupler 334 forms a stop for the bottom end of spring 348 .
- the biased coupler 334 is stopped by a cam member 354 pivotally supported within body portion 280 of connector box 266 . Cam member 354 is connected to cam lever 332 on the outside of connector box 266 .
- Cam member 354 is illustrated in the cammed orientation in FIG. 13 and in the uncammed orientation in FIG. 14.
- FIGS. 16 and 17 show the relative positions of cam member 354 and second end 302 of second gear 260 in, respectively, the cammed orientation and the uncammed orientation.
- the relative position of cam lever 332 on the exterior of connector box 266 is also illustrated in FIGS. 16 and 17.
- cam surface 356 is rotated towards motor drive shaft 340 as support surface 358 is rotated towards second end 302 of second gear 260 . Since cam surface 356 is farther than support surface 358 from the axis of rotation of cam member 354 , as cam member 354 pivots, cam surface 356 forces biased coupler 334 to be cammed against the spring bias force and made to slide along motor drive shaft 340 and, thus, to slide out of engagement with second gear 260 . As shown in FIGS. 13 and 16, cam surface 356 ends up supporting coupler 334 at a position slightly above second end 302 of second gear 260 . In this manner, motor 254 may be disconnected from gear mechanisms to allow manual activation of sliding system 10 , without any braking occurring from motor 254 .
- Cam member 254 is configured to partially encircle second gear 260 in both the cammed and uncammed orientation.
- support surface 358 of cam member 354 is located slightly below second end 302 of second gear 260 (FIGS. 13 and 16) such that biased-coupler 334 is supported in the engaged position with second gear 260 .
- the spring bias force normally affects coupling of motor drive shaft 340 and second gear 260 through coupler 334 such that both motor drive shaft 340 and second gear 290 are directionally driven, i.e., selectively rotated in a forward or reverse direction, by motor (not shown).
- cam member 354 is configured to have a rounded edge 360 between support surface 358 and cam surface 356 .
- Surfaces 356 , 358 are smooth and just slightly resilient to permit cam member 354 to smoothly pivot along bottom end 342 of coupler 334 .
- Suitable materials e.g., moldable nylon and plastic materials, are known in the art.
- cam member 354 is constructed from a very strong but resilient nylon or plastic material.
- One possible product is the plastic known as DELRIN, a product of E.I. du Pont D Nemours & Co., Inc.
- DELRIN a product of E.I. du Pont D Nemours & Co., Inc.
- this material and similar materials are readily available, moldable, durable and inexpensive.
- cam surface 356 is configured to have a slight slope 362 toward rounded edge 360 between cam surface 356 and support surface 358 . If cam lever 332 is operated only partially, the force of coupler 334 upon sloped surface of cam surface 356 will tend to cause cam member 354 to “flip” back into the uncammed orientation. In this manner, cam member 354 is prevented from resting in a relatively unsafe position that is between the fully cammed orientation and the fully uncammed orientation. When cam level 332 is operated fully, however, cam member 354 is very securely positioned in the cammed orientation.
- cam member 354 is adapted to be added to connector box 266 that is previously unprepared for use with quick release arrangement 330 .
- Cam member 354 is formed with receiving holes 370 for securely receiving a connecting end 372 of cam lever 332 on one side and a bolttype connector 372 on the opposite end.
- Bolt-type connector 374 in one embodiment, is made of a sturdy smooth material such as hard nylon or plastic.
- cam member 354 may then be positioned within connector box 266 with receiving holes 370 aligned with the holes in connector box 266 .
- the bolt-type connector 374 and connecting end 372 of cam lever 332 are passed through the holes in connector box 266 and into respective receiving holes 370 to thereby provide the pivotally supported cam member 354 of quick release arrangement 330 .
- cam member 354 small access holes 376 are provided within cam member 354 to connect with receiving holes 370 in a manner that permits the tip of a screwdriver or other small object to be inserted into access holes 376 such that the connecting end of cam lever 332 or bolt-type connector 374 may be pushed out of engagement with the respective receiving hole 370 .
- cam lever 332 and bolt-type connector 374 are composed of a strong but resilient nylon or plastic material.
- Quick release arrangement 330 of the present invention is very safe. Since coupler 334 is biased by spring 348 to remain engaged with second gear 260 , the spring bias force must be overcome by pivoting cam member 354 to effect camming, i.e., disengagement of second gear 260 from coupler 334 . Therefore, only rotational motion of cam lever 332 will overcome the spring bias force and effect camming.
- connector plate 256 and connector box 266 maintain first gear 258 and second gear 260 within first aperture 268 and second aperture 270 , respectively.
- Connector plate 256 and connector box 266 are separated from each other a predetermined distance through the combination of fasteners 310 and spacers 312 .
- Fasteners 310 pass through retaining holes 274 in flange 282 and into spacers 312 .
- Fasteners 310 extend into retaining holes 274 in connector plate 250 that includes, optionally, a threaded portion that engages with the threads of fasteners 310 .
- retaining holes 274 in connector plate 250 are devoid of threads and fasteners 310 pass therethough to attach to guide element (not shown).
- gear reduction assembly 252 may be bolted, welded, brazed, glued, or integrally formed with sliding system 40 .
- Both manual activation assembly 230 and motorized activation assembly 250 are structures capable of performing function of driving means for activating said gear mechanism to extend and retract the slide-out compartment. Other structures that are capable of performing the same function, in light of the teaching contained herein, are known by one skilled in the art. Additionally, the combination of manual activation assembly 230 and/or motorized activation assembly 250 with gear mechanism 44 is one structure capable of performing the function of moving means for extending and retracting the slide-out compartment. It will be appreciated that various other moving means are capable of performing the same function, and are known by one skilled in the art.
- slider rail 380 supports the majority of the weight associated with slide-out compartment 30 , thereby acting as a load-bearing member. When the size of slide-out compartment 30 increases, however, slider rail 110 carries more load and requires strengthening.
- One configuration that provides increased strength to slider rail 110 is depicted as slider rail 380 .
- the majority of the features discussed with respect to slider rail 110 also relates to slider rail 380 .
- slider rail 380 includes a lower slider rail 384 and an upper slider rail 386 , thereby forming a load-bearing member.
- Upper slider rail 382 and lower slider rail 384 are attached together at their respective middle portions 386 , 388 , thereby forming an I-beam structure.
- the I-beam construction as known in the art, is strong, rigid, and capable of providing the necessary support.
- a tubular member 390 may be fixably attached to slider rail 384 , such that strength is provided while retaining the capability of lower slider rail 384 to engage with gear mechanisms 44 .
- Tubular member 390 is depicted as having a square cross-section, however, it can be appreciated that one skilled in the art can identify various other cross-sectional shapes that are appropriate, such as but not limited to, oval, rectangular, trapezoidal, or the like.
- slider rail 380 is possible and other methods may be used to increase the strength of slider rail 380 .
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Abstract
Description
- This application is a divisional of U.S. patent application Ser. No. 09/448,410, filed Nov. 23, 1999, and entitled “Sliding Mechanisms and Systems” and claims the benefit thereof.
- 1. The Field of the Invention
- The present invention generally relates to a device for sliding objects in a controlled manner, and, more specifically, to a sliding mechanism for a “slide-out” compartment or room for a recreational vehicle, such as a camper, trailer, motor home, or the like.
- 2. The Prior State of the Art
- Recreational vehicles (RVs), such as travel trailers, campers, and motor homes offer users the opportunity to escape the rigors of everyday life and explore the world we live in. Resembling a small home on wheels, an RV is capable of transporting and comfortably sheltering people for extended periods of time. The primary benefit of such a vehicle is to enhance the camping or traveling experience by providing the comforts of home away from home. Additionally, the occupant is given the option of braving the elements, commonly known as “roughing it”, or retreating to the protection afforded by the RV. Thus, the spirit of “roughing it” may be maintained without deprivation of the full camping experience.
- Although freely mobile, as the size of RV's increase, the ease of handling tends to decrease. Additionally, RV's have dimensional limits dictated by highway regulations or the specific configuration of truck bed that contains the camper. Responding to the need for more living space inside a smaller vehicle, numerous different RVs incorporate pop-up tops and/or slide-out rooms for selectively expanding the living area. Designed to be used only when the RV is parked, these rooms are retracted and stored in the interior of the vehicle during travel, and are slid outwardly when the vehicle is parked. Generally, upon parking the recreational vehicle, the pop-up tops or slide-out rooms are moved horizontally to an extended position to increase the useable interior space of the vehicle.
- Several different devices have been proposed for use as slide-out rooms. Included among those proposed are expandable camper bodies and enclosures, and slidable room assemblies for RVs. Envisioned for recreational vehicle use, some older slide-out devices generally include accordion-like side walls laterally joined to a rigid end wall. Supporting the walls is a slidable frame carried on the main RV frame to slidably extend and retract from and within the main RV frame. Traditionally, a manually operated or motorized driving mechanism interconnects between the sliding frame and the main frame for expansion and retraction of the slide-out.
- The trend in the RV industry over the last several years concerning slide-out rooms has been to incorporate the entire slide-out assembly within the main frame of the RV. This trend, has led to the use of sliding tubes or beams that are attached to or integrally formed with the main frame of the RV. The associated driving mechanism is attached to the main frame or in close proximity thereto. However, the components forming the slide out mechanism tend to be scattered within the interior of the RV with the motor in one location, the driving mechanism encompassing another interior region, and the load bearing members extending across a substantial part of the interior of the RV. As such, the drive mechanisms and other components associated with these sliding mechanisms have become more complex and costly to install, repair, and/or replace.
- Driving mechanisms for RV slide-out rooms, that are currently available, function in many different forms. They tend to, however, generally share many of the same functional and structural characteristics. One variation of slide-out drive mechanisms involves the use of threaded drive screws to drive racks and pivoted cross-members that extend or retract the slide-out room. Another type of drive mechanism uses toothed geared drive assemblies having racks that expand or contract upon rotation of a toothed gear. Unfortunately, during the rigors of travel, the racks may become disengaged from the gears thereby preventing the slide-out room from being extended or retracted.
- Further efforts to provide drives for slide-out rooms have led to the use of hydraulic cylinders. Resembling horizontally installed hydraulic jacks, these mechanisms slidably force the room open as the hydraulic jack extends. Likewise, the hydraulic cylinder can slidably close the room. Although straightforward in design, hydraulic systems often tend to be fragile in nature and being subject to deleterious rigors of vibration in the transport of the RV over the roadway can experience a relatively short service life.
- Though these various devices solve many problems, they still require a significant amount of space within the recreational vehicle for the motor and drive mechanism. While motor home type RV's have substantial amounts of space to accommodate the required motors and driving mechanisms, the space within camper and trailer type RV's is at a premium and limits the application of currently slide-out room technology. For example, in motor home type slide-out rooms, the trend is to include a drive mechanism that extends from one side of the motor home to the other to provide the necessary load bearing strength. This technique is inoperable for camper type RV's because a camper slide-out room must slide out from a small wing wall that extends over the side of a pick-up. To allow an individual to use the camper, the driving mechanism may not extend into the central isle of the camper, and therefore must be limited to the dimensional restrictions of the wing wall. Furthermore, people still desire access to the interior of the camper when the slide-out room is retracted. Consequently, the slide-out room and associated driving mechanism cannot substantially block the interior isle. As such, it would be beneficial to reduce the space required for the motor and drive mechanism of a slide-out room for motor homes, and especially campers and trailers.
- Another problematic characteristic often shared by prior art drive mechanism designs is the intended location of the operating mechanism. Slide-out driving mechanisms are usually installed as original equipment during manufacture of the RV. Termed “OEM” equipment, the installation locations of these devices is often chosen without consideration of the fact that it may be desirable to subsequently gain access to such mechanisms for repair and/or replacement. As a result, the devices are often incorporated within the confines of the main frame of the RV making repairs costly and replacement nearly impossible.
- Additionally, with current slide-out room construction a relatively large gap is created between the slide-out room and the RV body when the slide-out room is extended. During use under adverse weather conditions, such as wind, rain, sleet, or snow, water tends to leak into the interior of the vehicle in the area between the slide-out room and the exterior wall of the vehicle. Current approaches to solving this problem involve filling the gap with a sealer to prevent infiltration of inclement weather. Unfortunately, since the gap between the bottom of the slide-out room and the RV body is large, the effectiveness of the sealer is limited. Furthermore, since the sealing material is less durable than other portions of the RV, overtime, the larger sealers tend to deteriorate, thereby allowing wind, rain, sleet, or snow to creep into the drive mechanisms of the slide-out room or to damage the walls of the RV body.
- Another problem with current RV mechanisms occurs once the RV has been in use for a period of time. During construction of an RV, the slide-out room is adjusted to properly fit the sidewalls and cooperate with the slide mechanisms. During use, however, the dimensions of the slide-out room and the body of the recreational vehicle may change due to a number of conditions. Current construction techniques and slide mechanisms make it difficult to readjust the fit of the slide-out room relative to the vehicle's sidewalls and floors, thereby providing inefficient sliding, binding, and damage to the sides and floor of both the slide-out room and the body of the recreational vehicle.
- It would be an advance to provide RV mechanisms for sliding a slide-out room on a recreational vehicle, such as a camper, trailer, motor home, or the like, that is compact, reliable, while reducing the possibility of infiltration of adverse weather conditions within the interior of the RV. In particular, it would be and advance to provide a sliding systems that incorporates sliding mechanisms, driving mechanisms, and structural support elements within a single unit, that requires little space for installation and use, while being reliable.
- It is an object of the present invention to provide a sliding mechanism and system for moving a slide-out compartment of a recreational vehicle that is compact while maintaining the required strength and rigidity.
- It is another object of the present invention to provide a sliding mechanism and system that provides additional structural support to the exterior wall of a recreational vehicle.
- Another object of the present invention is to provide a sliding mechanism and system that that may be activated manually to extend and retract a slide-out compartment of a recreational vehicle.
- Yet another object of the present invention is to provide sliding mechanisms and systems that are capable being easily modified to accommodate for changes in the structural dimensions of the recreational vehicle.
- Still yet another object of the present invention is to provide a sliding mechanism and system that is capable of being utilized on various types of recreational.
- Another object of the present invention is to provide a sliding mechanism and system that minimizes the space required for both installation and use of the sliding mechanism on various types of recreational vehicles.
- Still another object of the present is to provide a sliding mechanism and system that cooperates with seals to prevent infiltration of adverse weather conditions within the interior of various types of recreational vehicle.
- Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims.
- To achieve the foregoing objects, and in accordance with the invention as embodied and broadly described herein, a sliding mechanism for extending and retracting a slide-out compartment is disclosed. The sliding mechanism includes a guide member having two securing flanges separated by a gap that is in communication with an interior channel. A slider rail is disposed within the interior channel and has a middle portion adapted with a plurality of holes formed therein. Extending from the middle portion are two securing members that cooperate with the securing flanges of the guide member to maintain slider rail within the interior channel as middle portion extends into the gap. Disposed within the interior channel at one end of the guide element is a gear mechanism. The gear mechanism drivingly engages with the plurality of holes in the middle portion of the slider rail to extend or retract the slide-out compartment. As such, in one embodiment, gear mechanism includes a gear shaft and a gear attached to the gear shaft. The gear includes a plurality of teeth that extend into the gap between the securing members to engage with the holes in the middle portion of the slider rail. In this configuration, the slider rail is continuously maintained in the interior channel and the teeth are in continuous engagement with the slider rail. This prevents the teeth from disengaging from the slider rail and being incapable of moving slideout compartment.
- According to another aspect of the present invention, the gear shaft is adapted to cooperate with one or more activation assemblies. In one embodiment, the activation assembly is a manual activation assembly. The manual activation assembly includes a connector member that is adapted to attach to one end of the gear shaft. Located at another end of the connector member is a hand crank. As the hand crank is rotated, the connector member is rotated, thereby activating the gear mechanism to extend or retract the slide-out compartment.
- In another embodiment, the activation assembly is a motorized activation assembly. The motorized activation assembly includes a quick-release arrangement that allows a motor to be engaged and disengaged through rotation of a cam lever. Motorized activation assembly allows a motor to communicate with the gear shaft to thereby allow the motor to extend and retract the slide-out compartment. Additionally, when the sliding mechanism includes two connected gear shaft, with a manual activation assembly coupled to one gear shaft and a motorized activation assembly coupled to the other gear shaft, activation of the quick-release arrangement releases engagement of the motor with one gear shaft thereby allowing operation of the manual activation assembly. In one embodiment, the two gear shafts can be coupled together by a timing assembly. The timing assembly includes a detachable drive shaft that is capable of engaging and disengaging to the two gear shafts independently of each other.
- In another embodiment of the present invention, a system for extending and retracting a slide-out compartment incorporated within a recreational vehicle is disclosed. The system includes a base assembly that is adapted for fixably attachment to the recreational vehicle. The base assembly includes the guide element and a number of support elements that combine to provide structural support to both the slide-out compartment and the remaining parts of the recreational vehicle. The base assembly cooperates with the sliding mechanism to allow a slide-out compartment to be extended and retracted. In one embodiment of the sliding system, two slider rails are attached together through two slider supports.
- In order that the manner in which the above recited and other advantages and objects of the invention are obtained, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope, the invention will be described with additional specificity and detail through the use of the accompanying drawings in which:
- FIG. 1 is a partial breakaway perspective view of one embodiment of a vehicle and camper within one embodiment of the sliding system of the present invention.
- FIG. 2 is a perspective view of one embodiment of a sliding system.
- FIG. 3 is an exploded perspective view of one embodiment of a base assembly of the sliding system of FIG. 2.
- FIG. 4 is an exploded perspective view of one embodiment of a sliding assembly of the sliding system of FIG. 2.
- FIGS. 5A and 5B are partial perspective views of embodiments of a slider rail for one embodiment of the sliding assembly of FIG. 4.
- FIG. 6 is an exploded perspective view of one embodiment of a roller assembly of the sliding system of FIG. 2.
- FIG. 7 is an exploded perspective view of one embodiment of a gear mechanism of the sliding system of FIG. 2.
- FIG. 8 is partial cross-sectional view of the gear mechanism of FIG. 7 installed in a base assembly of FIG. 3.
- FIG. 9 is a plan view of the sliding system of FIG. 2.
- FIG. 10 is an end view of one embodiment of a first end of a drive shaft of the sliding system of FIG. 2.
- FIG. 11 is an end view of one embodiment of a second end of a drive shaft of the sliding system of FIG. 2.
- FIG. 12 is an exploded perspective view of one embodiment of a motorized assembly that can be used with the sliding system of FIG. 2.
- FIG. 13 illustrates a cross-sectional view of one embodiment of a quick-release arrangement having a cam member in a cammed.
- FIG. 14 illustrates a cross-sectional view of the embodiment of a quick-release arrangement of FIG. 13 with the cam member in an uncammed.
- FIG. 15 is an exploded perspective view of a portion of the quick release arrangement of FIG. 13.
- FIG. 16 illustrates a cross-sectional view that depicts the relative positions of the cam member and a second end of a second gear, in the cammed orientation, of the quick-release arrangement of FIG. 13.
- FIG. 17 illustrates a cross-sectional view that depicts the relative positions of the cam member and a second end of a second gear, in the uncammed orientation, of the quick-release arrangement of FIG. 13.
- FIG. 18 is an exploded perspective view of another embodiment of a cam member that is adapted to be added to an existing motorized activation assembly.
- FIG. 19A is a cross-sectional view of another embodiment of a slider rail
- FIG. 19B is a cross-sectional view of another embodiment of a slider rail.
- The present invention relates to sliding mechanisms and systems which may be used to extend and retract a slide-out compartment incorporated within a recreational vehicle, such as but not limited to campers, trailers, motor homes, and the like. The sliding mechanism is configured to be compact, while being capable extending and retracting variously sized slide-out rooms or compartments to increase the living space within a recreational vehicle. Furthermore, the sliding mechanism and systems of the present incorporate numerous sliding and driving components into a single unit thereby making installation simpler and quicker, while maintaining structural support and providing additional structural support to the recreational vehicle. Additionally, the sliding mechanisms and systems are capable of being installed on various recreational vehicles and at varying locations on the recreational vehicle without the need to substantially alter any portion of the mechanisms or components. As such, the sliding mechanisms and systems of the present invention are interchangeable or may be used without modification for slide-out rooms or compartments on the right, left, front, or rear of the recreational vehicle.
- Generally, the sliding mechanisms and systems shall be described hereinafter with reference to a camper that is contained within the bed of a pick-up truck. The discussion relating to application of the present invention to campers should not be considered as limiting the application of the general principals of the invention to other types of recreational vehicle, such as trailers and motor homes. Additionally, reference is made herein to a single slide-out compartment; however, it can be appreciated by one skilled in the art that multiple slide-out compartments may be incorporated within a single recreational vehicle.
- FIG. 1 depicts a
vehicle 10 with acab 12 and a vehicle bed (not shown) that supports acamper 18. As shown,camper 18 has aforward portion 20 that extends overcab 12 ofvehicle 10 and arear portion 22 that extends beyond the rear ofvehicle 10.Camper 18 has a step configuration formed with alower exterior wall 24 retained within the interior of the bed (not shown) and anupper exterior wall 26 that is located above the bed (not shown). Lowerexterior wall 24 and upperexterior wall 26 are joined together by way of a wing wall 28 (FIG. 2) that extends over aside 16 ofvehicle 10. As depicted in FIG. 1, in oneembodiment camper 18 includes a slide-out room orcompartment 30. As illustrated, in one embodiment, slide-out compartment 30 is located intermediate betweenforward portion 20 andrear portion 22 ofcamper 18. Slide-out compartment 30, however, may be located at the forward portion or rearward portion of the side ofcamper 18. Alternatively, slide-out compartment 30 may be located at the front or rear ofcamper 18. Furthermore,camper 18 may include a multiple number of slide-outcompartments 30 which are located at the front, rear, and/or on both sides ofcamper 18. - According to one aspect of the present invention, slide-
out compartment 30 is extended and retracted by way of a sliding system, as referenced by numeral 40 in FIG. 2. The configuration of slidingsystem 40 minimizes the space required for installation and usage of slidingsystem 40 to extend and retract slide-out compartment 30, thereby increasing the available living area while providing the requisite strength and functionality to operate slide-out compartment 30. - Sliding
system 40 includes abase assembly 42, agear mechanism 44, and aslider assembly 46. As depicted in FIG. 2,base assembly 42 is attached towing wall 28 ofcamper 18.Base assembly 42 is configured to both provide structural support forgear mechanism 44 andslider assembly 46, while providing structural support tocamper 18. Additionally,base assembly 42 is adapted to form the central unit of slidingsystem 40 upon whichgear mechanism 44 andslider assembly 46 may be attached and to which portions ofcamper 18 are affixed. - One embodiment of
base assembly 42 includessupport elements 50 that provide structural support to both slidingsystem 40 andcamper 18. Attached to supportelements 50 are optional feet 52 (FIG. 3) that are capable of assisting in leveling and attachingsupport elements 50 tocamper 18. As illustrated in FIG. 2, also attached to supportelement 50 are a number ofguide members 54 that cooperate withgear mechanism 44 andslider assembly 46 to allow slide-out room 30 to be retracted or extended as required. - In the case of use with camper18 (FIG. 1),
base assembly 42 is sized so that whensupport elements 50 are coupled towing wall 28, the location ofsupport elements 50 onwing wall 28 coincides with the top oflower exterior wall 24 and the bottom portion of upperexterior wall 26.Base assembly 42, and therefore supportelements 50, provide structural support tocamper 18. - As depicted in both FIG. 2 and3, each
support element 50 has a generally U-shaped cross-section having anouter portion 60 and aninner portion 62 that are separated by abase portion 64.Outer portion 60 andinner portion 62 have a spaced apart relationship that allows attachment ofguide members 54, while giving strength tobase assembly 42. As shown in FIG. 2,support elements 50 are capable of being attached towing wall 28, while also attaching to lowerexterior wall 24 and upperexterior wall 26. As such, the cross-sectional configuration ofsupport element 50 may be varied as necessary dependent on the particular use thereof, such thatsupport element 50 may have a cross-section in the configuration of a square, rectangular, oval, trapezoidal, or the like, or combinations thereof. - As depicted in FIG. 3,
inner portion 62 includes a plurality of feet fastening holes 66 through whichoptional feet 52 may be coupled thereto. In one embodiment, bothbase portion 64 andouter portion 60 include numerous fastening holes 68 which are configured to allow portions ofcamper 18 to be attached to supportelement 50. By way of example, and not limitation, fastening holes 68 inouter portion 60 may be sized to allow fasteners to attachouter portion 60 toupper exterior wall 26, while fastening holes 68 inbase portion 64 may be sized to allow fasteners to attachbase assembly 42 towing wall 28. It will be appreciated that the number, size, and dimensions of feet fastening holes 66 and fastening holes 68 may be varied as needed. In addition,feet fastening holes 66 and fastening holes 68 may have various other configurations that are not illustrated in FIG. 3. By way of example and not limitation,feet fastening holes 66 and fastening holes 68 may be round, oval, elliptical, elongated, square, triangular, rectangular, or the like. -
Support element 50 may be composed of various types of materials, such as by way of example and not limitation, metals, composites, plastics, or the like, as long as the material used is capable of providing support to the other components of the present invention, while giving structural support tocamper 18. In one embodiment,support element 50 is substantially composed of steel. - In one embodiment,
feet 52 are releasably attached to supportelement 50. It will be appreciated by one skilled in the art thatfeet 52 are an optional feature of slidingsystem 10.Siding system 10 is equally effective withoutfeet 52.Feet 52 allowsupport element 50 to be leveled with respect towing wall 28 and the other components and dimensions ofcamper 18, such as lower and upperexterior walls feet 52 are particularly useful as the camper ages, becausefeet 52 may be utilized to assist with eliminating problems such as the camper not being level. Furthermore,feet 52 may be used to compensate for defects in the construction ofcamper 18 that would otherwise affect the sliding motion ofslider system 40. In one embodiment,feet 52 have a generally L-shaped cross-section. As depicted in FIG. 3,feet 52 have afirst foot portion 70 adapted to couple to supportelement 50 at feet fastening holes 66, while asecond foot portion 72 is adapted to couple towing wall 28. Eachfoot portion apertures 74 which are adapted to cooperate with numerous types of fastener (not shown) to allow secure attachment offeet 52 to eitherwing wall 28 orsupport element 50. Additionally, in one embodiment, eachaperture 74 has an ovular or slotted form to allow adjustment ofsupport elements 50 andfeet 52. - In view of the teaching contained herein, one skilled in the art can identify various other configurations of
feet 52 which are capable of performing the function thereof. By way of example and not imitation, eachfoot 52 may have various other cross-sectional configuration, such as square, rectangular, or the like. Additionally, in an another configuration,feet 52 are integrally formed withsupport element 50 and washers slidably engages with a fastener to vary the distance between eachsecond foot portion 72 andwing wall 28. In another configuration,feet 52 are in the form of a post or cylindrical member that has a threaded portion encompassing the exterior surface thereof. The threaded portion cooperates with a complementary threaded portion formed insupport element 50, to therebylevel base assembly 42. In yet another configuration,feet 52 may have the form of a post or cylindrical member that is spring-loaded to maintain separation betweenwing wall 28 andsecond foot portion 72. - As shown in FIG. 2,
guide member 54 is attached to supportelement 50.Guide member 54 separates and gives structural support to supportelements 50, thereby providing structural integrity tobase assembly 42.Guide member 54, additionally, cooperates withslider assembly 46 andgear mechanism 44 to allowslider assembly 46 to be extended and retracted during operation of slidingsystem 40. - In one embodiment,
guide member 54, shown in greater detail in FIG. 3, has a generally C-shaped cross-section.Guide member 54 has afirst side 80 and asecond side 82 separated by abase 84. Extending fromfirst side 80 andsecond side 82 is a first securingflange 86 and asecond securing flange 88, respectively. First and second securingflanges gap 90 remains therebetween. It will be appreciated that the configuration ofguide member 54 defines a channel along the longitudinal length thereof. In this embodiment, as illustrated in FIG. 2,guide member 54 is adapted to cooperate withgear mechanism 44 andslider assembly 46 to allow slide-out compartment 30 to be extended and retracted. - Referring back to FIG. 3,
guide member 54 has afirst end 124 and asecond end 126. Located atfirst end 124 ofguide member 54 is agear mount 94. Atsecond end 126 is aroller mount 96. It can be appreciated by one skilled in the art, however, that gear mount 94 may be located atsecond end 126 and roller mount 96 may be located atfirst end 124. Similarly, it can be appreciated that bothgear mount 94 and roller mount 96 may be located at any longitudinal distance alongguide element 54. Furthermore, in another embodiment ofbase assembly 42,gear mount 94 is located atfirst end 124 and roller mount is located atsecond end 126, however,base assembly 42 is rotated 180° from that shown in FIGS. 2 and when installed oncamper 18. -
Gear mount 94 includes twobushing protrusions 98 which extend from respective surfaces offirst side 80 andsecond side 82. An axialgear shaft hole 100 passes throughbushing protrusion 98 and the associatedfirst side 80 orsecond side 82. Axial gear shaft holes 100 are adapted to cooperate withgear mechanism 44, and allow free rotation thereof. Bushingprotrusions 98 and axial gear shaft holes 100 are one embodiment of structure capable of performing the function of a connecting means for couplinggearing mechanism 44 to guidemember 54. It will be appreciated by one skilled in the art that various other configurations of connecting means are possible. For example, connecting means could utilize gear shaft holes 100 that have the form of a slot that extends to the end offirst side 80 orsecond side 82, distal frombase 84. In this embodiment, the slot is capped with a securing flange that closes the open end thereof and attaches gearingmechanism 44 to guideelement 54. In another embodiment,bushing protrusions 98 are detachable and secured to guidemember 54 by way of one or more fasteners. In yet another embodiment, connecting means comprises of a hole that has an interior tapered form that frictionally retainsgear mechanism 44 to guidemember 54. -
Roller mount 96 includes two axially coinciding roller shaft holes 102 formed infirst side 80 andsecond side 82. Roller shaft holes 102 are capable of cooperating with the components ofroller assembly 96.Roller shaft hole 102 is one structure capable of performing the function of connecting means for couplingroller assembly 96 to guidemember 54. It will be appreciated that various other configurations of connecting means are capable of performing the function thereof. For example,roller shaft hole 102 may be tapered to cause a friction fit withroller assembly 96. In another embodiment of connecting means,roller shaft hole 102 includes protrusions similar to those of bushingprotrusions 98. In yet another embodiment of connecting means,roller shaft hole 102 is a slot. - As depicted in FIG. 2, sliding
assembly 46 is disposed in the channel defined byguide member 54 and cooperates with securingflanges 86, 88 (FIG. 2).Slider assembly 46 is attached to slide-out compartment 30, as well as being slidably engaged with the channel defined byguide member 54 andgear mechanism 44.Slider assembly 46, in cooperation withguide member 54, provides the structural support and load bearing members that carry the weight and dissipate the forces resulting from extending and retracting slide-out compartment 30. As depicted in FIG. 4,slider assembly 46 includes slider rails 110 that are coupled to slider supports 112. While FIG. 4 depictsslider assembly 46 as having twoslider rails 110 and two slider supports 112, it will be appreciated that various other numbers ofslider rails 110 and slider supports 112 could be used. - In one embodiment of
slider rail 110, as illustrated in FIG. 5A,slider rail 110 has a raisedmiddle portion 114, with a first securingmember 116 and asecond securing member 118. First and second securingmembers middle portion 114. Securingmembers flanges guide members 54 to retainslider rail 110 within the channel defined byguide member 54.Middle portion 114 includes a number ofslots 120 that are configured to cooperate withgear mechanism 44 to allow movement ofslider assembly 46. In one embodiment, eachslot 120 has a generally rectangular form. It will be appreciated, however, that various other configurations are capable of performing the function thereof. By way of example and not limitation,slot 120 may be round, oval, elliptical or any combination thereof. What is important is thatslot 120 be configured to cooperate withgear mechanism 44. In addition, as shown in FIG. 5A, one or more ofslot 120 may include a curved section that is capable of accommodating a fastener (not shown) to attachslider rail 110 to a portion of slide-out compartment 30.First end 124 andsecond end 126 ofslider rail 110 have a number of retainingholes 128 formed therein. In one embodiment, retainingholes 128 include an optional threaded portion to allowslider rail 110 to be attached toslider support 112. Alternatively,slider support 112 may be bolted, welded, riveted, or glued toslider rail 110 during fabrication or manufacture. - Referring now to FIG. 5b, an alternate embodiment of a
slider rail 110 b is depicted.Slider rail 110 b includes afirst element 130 and asecond element 132. Aslot 133 is formed through thefirst element 130 andsecond element 132 that acts asslot 120 ofslider rail 110. Alternatively, slot 133 may only passes throughsecond element 132 andfirst element 132 is a solid piece of material. - The first element is adapted to act as
middle portion 114, while the second element acts as securingmember first element 130 is fixably coupled to the central portion ofsecond element 132 such that slots in each element align to formslot 133. Additionally, fixation offirst element 130 tosecond element 132 leaves thesides second element 132 exposed such thatsides flanges guide members 54 to retainslider rail 110 within the channel defined byguide member 54. It can be appreciated by one skilled in the art that there are various other configuration ofslider rails - Returning to FIG. 4, in one embodiment,
slider support 112 has a generally L-shaped configuration that comprises anupper portion 136 and aside portion 138 extending therefrom.Side portion 138 is substantially perpendicular toupper portion 136. It will be appreciated, however, thatside portion 138 may extend fromupper portion 136 at various other angular orientations. In one embodiment,upper portion 136 ofslider support 112 includes twonotches 140 that are adapted to cooperated with first and second ends 124, 126 ofslider rail 110. Surrounding eachnotch 140 inslider support 112 are retainingholes 128 that are configured to cooperate with retainingholes 128 inslider rail 110. As such,notches 140 and retainingholes 128 may have various dimensions and sizes so long as they assist in securely retainingslider rail 110 toslider support 112, i.e. allow fasteners to be disposed through retainingholes 128 inupper portion 136 and into retainingholes 128 ofslider rail 110. - In one embodiment, both
upper portion 136 andside portion 138 ofslider support 112 include a number of securingorifices 144 that are formed to accommodate a fastener (not show) used to attachslider support 112 to a portion of slide-out compartment 30. Securingorifices 144, therefore, may have any desirable form, such as but not limited to, circular, angular, slot-like, or the like. Additionally, the fasteners described herein may comprise of various types of fasteners, such as but not limited to, screw, bolts, split pins, and the like. - The cross-sectional configuration of
slider rail 110 andslider support 112 may be varied as necessary depending on the particular use thereof. By way of example and not limitation,slider rail 110 andslider support 112 may have various other configurations such as square, rectangular, or the like. Additionally,slider rail 110 andslider support 112 may be fabricated from various types of materials, such as for example, metals, composites, plastics, fibrous material, or the like, so long as the material has sufficient strength for extending and retracting slide-out room 30. In one embodiment,slider rail 110 andslider support 112 are substantially composed of a steel material. - In use of
slider system 10,slider rail 110 cooperates withroller assembly 148 as depicted in FIG. 6.Roller assembly 148 includes aroller shaft 150 and aroller 152.Roller shaft 150 is sized to securely fit within roller shaft holes 102 and anaxial hole 164 formed throughroller 152. Roller shaft holes 102 andaxial hole 164 are sized and configured to allowroller 152 to rotate aboutroller shaft 150. In one embodiment,roller shaft 150 includes twofastening grooves 154 formed in the surface thereof, which are adapted to receive fastening clips 156. Fastening clips 156 andfastening grooves 154 assist in retainingroller shaft 150 within roller shaft holes 102. Various other structures are capable of performing the function ofroller shaft 150, fastening clips 156, andfastening grooves 154. For example, in anotherembodiment roller 152 is configured to cooperate with the underside ofmiddle portion 114 ofslider rail 110 so as to self center therein. In another embodiment,roller shaft 150 may be retained within roller shaft holes 102 through a friction fit androller 152 is configured to rotate axially aroundroller shaft 150. In yet another embodiment,roller shaft 150 includes pinholes that accommodate split pins or the like, which prevent retraction ofroller shaft 150 from within roller shaft holes 102. -
Roller shaft 150 may be manufactured from various types of material, such as by way of example and not by way of limitation, metals, composites, plastics, and the like. In one embodiment,roller shaft 150 is composed of steel. - In one embodiment,
roller 152 has a generally cylindrical configuration that includes alarger diameter portion 160 and asmaller diameter portion 162.Larger diameter portion 160 ofroller 152 is configured to cooperate with slider rails 110. In addition,roller 152 self-centers within the channel defined byguide member 54 upon insertion ofroller shaft 150 throughaxial hole 164.Larger diameter portion 160 andmiddle portion 114 ofslider rail 110 are configured to cooperate so as to allowroller 152 to self center. Consequently,larger portion 160 self-centers on the underside ofmiddle portion 114 ofslider rail 110 to provide smooth sliding ofslider rail 110 within the channel defined byguide element 54. -
Roller 152 is rotatably mounted within the channel defined byguide member 54 asroller shaft 150 passes throughroller shaft hole 102 and locates withinroller mount 96. In this embodiment,roller 152 has a length sufficient to extend across the width of the channel defined byguide member 54. As such,roller 152 abuts againstfirst side 80 andsecond side 82 to reduce movement ofguide member 54 during use. Additionally, sinceroller 152 abuts thesides guide member 54,larger diameter portion 160 is always in engagement withmiddle portion 114 ofslider rail 110. It will be appreciated thatroller 152 may take various other forms such as bearing rollers, or the like. -
Roller 152 may be composed of various types of material, such as by way of example and not by way of limitation, metal, composites, plastics, and the like. In one embodiment,roller 152 is formed from a plastic material. - As depicted in FIGS. 7 and 8,
gear mechanism 44 is adapted to cooperate withslider rail 110. One embodiment ofgear mechanism 44, illustrated in FIG. 7, includes agear shaft 170 and agear 172.Gear shaft 170 is sized to securely fit within gear holes 100 ofguide member 54 with the aid ofbushings 174, while being capable of freely rotating withinbushings 174. As depicted, in one embodiment,gear shaft 170 has a generally cylindrical configuration.Gear shaft 170 has afirst end 180, asecond end 182, and anintermediate portion 176 disposed there between. First and second ends 180, 182, respectively, are shaped to allow driving activation assemblies and timing mechanism to be engaged thereto. As shown, in this embodiment, first and second ends 180, 182 are generally square, whileintermediate portion 176 is generally cylindrical. It will be appreciated by one skilled in the art that gearshaft 170, first and second ends 180, 182, respectively, andintermediate portion 176 may have various other cross-sectional configurations, such as by example and not limitation, hexagonal, square, octagonal, triangular, oval, or the like. In another embodiment,gear shaft 170 has a generally hexagonal form with two cylindrical portions that cooperate withbushings 174 to allow free rotation ofgear shaft 170. -
Gear 172 is adapted to cooperate withgear shaft 170. In one embodiment depicted in FIG. 7,gear 172 has a generally cylindrical form with a plurality ofteeth 190 extending outwardly from a surface thereof.Teeth 190 are configured to cooperate withslots 120 formed inslider rail 110, as shown in FIG. 8. Returning to FIG. 7,gear 172 has anaxial hole 192 that is sized to cooperate with the dimensions ofgear shaft 170. In this embodiment,axial hole 194 has a generally cylindrical configuration, however, various other cross-sectional shapes are possible as long asaxial hole 194 andintermediate portion 176 cooperate. - In addition,
gear 172 has a retaininghole 194 that passes throughgear 172 and is sized to cooperate with a retaininghole 184 formed ingear shaft 170. As shown in FIG. 8, whengear 172 is mounted ongear shaft 170, retainingholes gear 172 from slipping relative to gearshaft 170 asgear shaft 170 rotates to extend or retract slide-out compartment 30. Alternatively, as shown in FIG. 7,gear shaft 170 andaxial hole 192 may have complementary shapes such that the complementary shape limits any slippage which might occur betweengear shaft 170 andaxial hole 192. Retention clips 156 cooperate with coinciding retaininggrooves 198 formed ingear shaft 170 to retaingear shaft 170 within gear shaft holes 100. As illustrated in FIG. 8,gear 172 is disposed in the channel defined byguide member 54 and extends intogap 90 between securingflanges Teeth 190, therefore, engage withslots 120 ofslider rail 110. - It will be appreciated by one skilled in the art that various other configurations of
gear mechanism 44 are capable of performing the function thereof. For example,gear 172 may be welded, brazed, or joined to gearshaft 170. In another embodiment,gear shaft 170 may include pinholes which accommodate split pins that preventgear shaft 170 from being retracted from gear shaft holes 100. In another embodiment,gear shaft 170 may include twogears 172 that cooperate with a slider rail having two sets of slots. In still another embodiment,gear 172 may be retained ongear shaft 170, solely through the combination of retaininghole gear shaft 150 is located throughgear holes 100 that are located atsecond end 126 ofguide element 54. -
Gear 172,gear shaft 170, andbushing 174, may be manufactured from various types of material, such as by way of example and not by way of limitation, metal, composites, plastics, and the like. In one embodiment,gear 172,gear shaft 170, andbushing 174, are fabricated from steel. While in thisembodiment gear 172,gear shaft 170, andbushings 174 are composed of the same material, this is not required. - Referring back to FIG. 2, sliding
system 40 is depicted in a fully assembled and operational form.Support elements 50 are coupled to guidemembers 54 such thatguide members 54 rest uponinner portions 62 ofsupport elements 50. Simultaneously, the ends ofguide members 54 are attached toouter portions 60 ofsupport elements 50.Support elements 50 andguide members 54 combine to form a square orrectangular base assembly 42. - As shown in FIG. 8, upon manufacture of
base assembly 42,gear mechanisms 44 are coupled torespective roller 152, such thatgear 172 is substantially centered within the channel defined byguide member 54. It will be appreciated that when assembled,roller 152 is similarly centered within the channel defined byguide element 54. Beforeslider rail 110 is attached,teeth 190 ofgear 172 extend between securingflanges slots 120 ofslider rail 110. - Once slider rails110 are fixably attached to slider supports 112,
slider rail 110 is located within the channel defined byguide element 54 such that securingflanges guide element 54contact securing members slider 110. In one embodiment, securingmembers flanges separate securing flanges members flanges members - As securing
members flanges middle portion 114 ofslider 110 extends throughgap 90, thereby allowingslots 120 to engageteeth 190 ofgears 172. In this configuration,teeth 190 ofgear 172 remain in contact withslots 120 ofslider rail 110 throughout the life of slidingsystem 40. There is, therefore, no possibility ofgear 172 disengaging fromslots 120 before, during, or after slide-out compartment 30 is extended or retracted. This eliminates the problem with prior sliding mechanisms and systems that disengage during travel of the recreational vehicle, thereby requiring costly repairs and maintenance. - During assembly,
slider rail 110 is moved along the channel defined byguide element 54 until the detached end of slider rails 110 extends out ofguide channel 92. When this occurs, asecond slider support 112, depicted in FIG. 9, is attached toslider rail 110 to thereby formslider assembly 46. Slider supports 112 prevent over extraction ofslider rails 110 from the channel defined byguide member 54, thereby preventing over extension of slide-out compartment 30 during use. - As shown in FIG. 9, in one embodiment, sliding
system 40 utilizes twogear mechanisms 44 located at first ends 124 ofguide members 54. The combination ofgear mechanism 44 is considered the gearing assembly of the present invention. It may be appreciated, however, that the gearing assembly may comprise of various other numbers ofgear mechanism 44. Additionally, the location of eachgear mechanism 44 may be varied so thatgear mechanism 44, and so the gearing assembly, may be at any location along the length ofguide members 54. - The sliding
system 40 as depicted herein encompasses substantially all the structural support members, sliding members, and driving elements within the interior confines ofbase assembly 42. As such, slidingsystem 40 of the present invention is compact and has a height that is minimized to reduce the gap formed between the camper's exterior walls and the slider rails 110 of slidingsystem 40. By so doing, slidingsystem 40 reduces the area through which wind, rain, sleet, and snow can infiltrate during use if slide-out compartment 30. - Additionally, since all the components are attached to
base assembly 64, shown in FIG. 1, slidingsystem 40 is simple to install on a camper, thereby reducing cost and time for fabricating campers with slide-out compartments. Furthermore, slidingsystem 40 reduces the required space for apparatus and devices that extend and retract slide-out compartments 30. - According to another aspect of the present invention, as depicted in FIG. 9,
gear shafts 170 ofgear mechanism 44 are connected by way of atiming assembly 205. Timingassembly 205 includes adrive shaft 210 and a retainingspring 212. Althoughspring 212 is depicted as being on the right side of slidingsystem 40, it is contemplated thatspring 212 could be on the left side and have equal effectiveness. Driveshaft 210 has a generally elongated form with afirst end 214 and asecond end 216. Eachend drive shaft 210 has a respective connector recess. One embodiment offirst connector recess 218 andsecond connector recess 220 are depicted in FIGS. 10 and 11. Connector recesses 218, 220 are adapted to cooperate with the respective ends ofgear shaft 170. As shown in FIG. 10,first connector recess 218 has an interior configuration having six facets formed therein. In contrast, as illustrated in FIG. 11,second connector recess 220 has an interior configuration with twelve facets formed therein. Each interior configuration is capable of cooperating with either end ofgear shaft 170. It will be appreciated by one skilled in the art that various other configurations oftiming assembly 205 are possible. For example,timing assembly 205 could include two retaining springs, one on eachgear shaft 170 of this embodiment of slidingsystem 40. In another example,timing assembly 205 is capable of rotating eithergear mechanism 44 on either side of slidingsystem 40. - One feature of the present invention is the ability of
drive shaft 210 to be disengaged with respect to onegear shaft 170 attached to oneguide element 54, while remaining engaged with asecond gear shaft 170 attached to asecond guide element 54. In this manner, the timing of slidingassembly 40 andgear mechanism 44 may be adjusted, thereby compensating for any misalignment between slide-out compartment 30 andcamper 18 and reducing any binding and wearing ofslider rails 110 and slide-out compartment 30. - To
time sliding system 40,drive shaft 210 is pushed towardgear shaft 170 having retainingspring 212 proximal thereto. As retainingspring 212 depresses,second end 216 ofdrive shaft 210 disengages second connector recess 220 (FIG. 11) from asecond gear shaft 170. Upon being disengaged,drive shaft 210 may be rotated to turngear shaft 170, thereby modifying the starting position ofgear shaft 170. Upon achieving the desired rotation totime gear shaft 170,drive shaft 210 is released and first connector recess 218 (FIG. 10) engages withgear shaft 170 as retainingspring 212 extends to an extended position. - This configuration also allows the user to compensate for deviations in the squareness of slide-
out compartment 30 andcamper 18 because second connector recess 220 (FIG. 11) ofdrive shaft 210 has twelve facets as compared to first connector recess 218 (FIG. 10) which has six. That is,drive shaft 210 may be rotated in increments of {fraction (1/12)}th of a complete rotation. It will be appreciated that connector recesses 218, 220 may be formed with a variety of different internal facets, thereby providing a different number of increments of rotation. - To extend or retract slide-
out compartment 30 it is necessary to utilize an activation assembly, such as a manual activation assembly or a motorized activation assembly.Slider system 40 is configured to work with either one. Amanual activation assembly 230 is depicted in FIG. 9.Manual activation assembly 230 includes aconnector member 232 and a hand crank 234. Hand crank 234 has a generally S-shaped form with ahandle 236 at one end thereof and a shapedconnector end 238 distal thereto.Shaped connector end 238 releasably couples toconnector member 232.Connector member 232 has afirst end 240 adapted to hook togear shaft 170 and asecond end 242 that cooperates with shapedconnector end 238 of hand crank 234. As such, rotational movement of hand crank 234 is translated alongconnector member 232 to gearshaft 170. -
Connector member 232 may have various lengths and dimensions, so long as it is capable of cooperating withgear shaft 170 and hand crank 234. For example,connector member 232 may have a length sufficient to pass through a portion ofexterior walls camper 18 to engage withgear shaft 170 on either side of slidingsystem 40. Alternatively,connector member 232 may be integrally formed with hand crank 234.Connector member 232 and hand crank 234 may have various configurations as long as they are capable of cooperating and can translate rotational motion to gearshaft 170. - Alternative to, or in combination with
manual activation assembly 230, slidingsystem 44 may incorporate amotorized activation assembly 250. One embodiment of which is illustrated in FIG. 12. One embodiment ofmotorized activation assembly 250 includes agear reduction assembly 252 and amotor 254.Motor 254 is engaged to gearreduction assembly 252. As schematically depicted in FIG. 12,motor 254 includes adrive shaft 330 extending from a body thereof.Motor 254 may take various forms such as an electric, pneumatic, oil, gasoline, or the like. As such, one skilled in the art can identify various types of motor that may be utilized to rotatesecond end 292 ofsecond gear 260, thereby rotatinggear shaft 170 to extend and retract slide-out compartment 30. -
Gear reduction assembly 252 includes aconnector plate 256, afirst gear 258, asecond gear 260, and aconnector box 266. In one embodiment,connector plate 256 has a generally square shape with afirst aperture 268 and asecond aperture 270 formed therein.Connector plate 256 further includes a plurality of retaining holes 288 located about the peripheral edge ofconnector plate 256 that cooperate with a plurality of fasteners (not shown) to allowconnector plate 256 to be coupled to guidemember 54. - Cooperating with
first aperture 268 isfirst gear 258.First gear 258 has afirst end 290 and asecond end 292 with a plurality ofteeth 294 located therebetween.First end 290 is adapted to be disposed withinfirst apertures 268 ofconnector plate 256, whilesecond end 292 cooperates withconnector box 266.First end 290 includes aninterior recess 296 that engages withgear shaft 170, such that rotational movement offirst gear 258 rotatesgear shaft 170. As such,interior recess 296 may have various forms and dimensions, so long as it is capable of engaging withgear shaft 170. -
Second gear 260 is engaged with bothfirst gear 258 andconnector plate 256.Second gear 260 has afirst end 300, an elongatedsecond end 302, and a plurality ofteeth 304 disposed therebetween.First end 300 cooperates withsecond aperture 270 ofconnector plate 256, whilesecond end 302 cooperates withconnector box 266.Second end 302 is further adapted to cooperate withmotor 254 so that rotational motion induced bymotor 254 is translated toteeth 304 that are engaged withteeth 294 offirst gear 258.Second end 302 ofsecond gear 260 may have various forms as known by one skilled in the art. - In communication with
second end 292 offirst gear 258 andsecond end 302 ofsecond gear 260 isconnector box 266.Connector box 266 includes abody portion 280, aflange 282 mounted tobody portion 280, and acam lever 332.Cam lever 332 is the only component of a quick release arrangement 330 (FIG. 13) that is visible. Attached to one end ofbody portion 280 isflange 282.Flange 282, in one embodiment, has the same general configuration asconnector plate 250, i.e., includes afirst aperture 268, asecond aperture 270, and a plurality of retainingholes 274 formed about a periphery thereof. It will be appreciated by one skilled in the art thatconnector box 266 may have various other configurations, such as round, hexagonal, rectangular, octagonal, trapezoidal, or the like. Additionally,connector box 266 may be fabricated from various types of material, such as plastics, composites, metals, or the like. -
Body portion 280 ofconnector box 266 has a generally square cross-section with an interior 281. Interior 281 ofbody portion 280 is adapted to accommodate structures described in U.S. patent application Ser. No. 08/887,197 entitled “Quick Release Arrangement for a Camper Jack System,” the disclosure of which is incorporated by this reference. Therefore, interior 281 includes quick release arrangement 330 (FIG. 13) that connects and releases the driving force ofmotor 254 tosecond end 302 ofsecond gear 260. - FIG. 13 depicts a cross-sectional view of one embodiment of
quick release arrangement 330. Acoupler 334 having abore 335 therethrough is adapted at a top end 336 to engage alower end 338 ofmotor drive shaft 340.Motor drive shaft 340 is rotatable on its longitudinal axis but is fixed against vertical movement withinbody portion 280.Motor drive shaft 340 extends a short distance fromcoupler 334 and passes through an opening surrounded by astationary flange 352 into a compartment for coupling withmotor 254 in motor housing 255, such thatmotor drive shaft 340 is directionally rotated bymotor 254.Motor 254 resists movement in an opposite direction to the motor's directional setting, and so provides brake control as well as drive control tosecond end 302 ofsecond gear 260. -
Coupler 334 has abottom end 342 adapted to slidably engagesecond end 292 ofsecond gear 260.Second gear 260 is also rotatable on its longitudinal axis but is fixed against longitudinal movement withinconnector box 266.Coupler 334 is configured to securely engagemotor drive shaft 340 andsecond end 302 ofsecond gear 260 such that, when coupled,motor drive shaft 340 andsecond gear 260 rotate together through operation ofmotor 254. At the same time,coupler 334 is adapted to slide along the longitudinal axis ofmotor drive shaft 340 andsecond end 302 ofsecond gear 260. - It will be appreciated that various means for affecting the slidable engagement of
coupler 334,motor drive shaft 340 andsecond gear 260 could be used. For example, as shown in FIG. 15, bore 335 throughcoupler 334 is configured to have notchedcorners 345 to thereby engage withcomers 315 of the substantially square-shapedsecond end 302 ofsecond gear 260 andmotor drive shaft 340 such that coupled rotation will occur while still permittingcoupler 334 to slide longitudinally alongmotor drive shaft 340 andsecond end 302 ofsecond gear 260. To withstand the torque generated by operation ofmotor 254,coupler 334 is constructed of a strong and durable metal material. Alternatively, in the event thatquick release arrangement 330 is used withmanual activation assembly 230 or some other manual activation means that do not generate as much torque, a very strong plastic or nylon material could be used, if desired. - In addition to the notched
comers 345 withinbore 335 ofcoupler 334,second end 302 ofsecond gear 260 is configured to have bevelededges 341 that correspond tobeveled edges 343 formed on abottom end 342 ofcoupler 334 such that slidable engagement ofcoupler 334 andsecond gear 260 is facilitated. - A
spring 348 is positioned to biascoupler 334 to engage withsecond end 302 ofsecond gear 260. It will be appreciated that various other means for effecting the spring bias force could be used. In one embodiment illustrated in FIG. 13,flange 352 forms the stop for a top end ofspring 348, while aprotruding shoulder 350 formed oncoupler 334 forms a stop for the bottom end ofspring 348. Thebiased coupler 334, in turn, is stopped by acam member 354 pivotally supported withinbody portion 280 ofconnector box 266.Cam member 354 is connected tocam lever 332 on the outside ofconnector box 266. -
Cam member 354 is illustrated in the cammed orientation in FIG. 13 and in the uncammed orientation in FIG. 14. FIGS. 16 and 17 show the relative positions ofcam member 354 andsecond end 302 ofsecond gear 260 in, respectively, the cammed orientation and the uncammed orientation. The relative position ofcam lever 332 on the exterior ofconnector box 266 is also illustrated in FIGS. 16 and 17. - As shown in FIGS. 13 and 16, when
cam member 354 is pivoted approximately 90° into the cammed orientation,cam surface 356 is rotated towardsmotor drive shaft 340 assupport surface 358 is rotated towardssecond end 302 ofsecond gear 260. Sincecam surface 356 is farther thansupport surface 358 from the axis of rotation ofcam member 354, ascam member 354 pivots,cam surface 356 forces biasedcoupler 334 to be cammed against the spring bias force and made to slide alongmotor drive shaft 340 and, thus, to slide out of engagement withsecond gear 260. As shown in FIGS. 13 and 16,cam surface 356 ends up supportingcoupler 334 at a position slightly abovesecond end 302 ofsecond gear 260. In this manner,motor 254 may be disconnected from gear mechanisms to allow manual activation of slidingsystem 10, without any braking occurring frommotor 254. -
Cam member 254 is configured to partially encirclesecond gear 260 in both the cammed and uncammed orientation. When uncammed,support surface 358 ofcam member 354 is located slightly belowsecond end 302 of second gear 260 (FIGS. 13 and 16) such that biased-coupler 334 is supported in the engaged position withsecond gear 260. Thus, whencam member 354 is uncammed, the spring bias force normally affects coupling ofmotor drive shaft 340 andsecond gear 260 throughcoupler 334 such that bothmotor drive shaft 340 andsecond gear 290 are directionally driven, i.e., selectively rotated in a forward or reverse direction, by motor (not shown). - Since
coupler 334 is biased byspring 348 to remain engaged withsecond gear 260, the spring bias force must be overcome by the pivotingcam member 354 to effect camming, i.e., disengagement ofsecond gear 260 fromcoupler 334. Spring tension is adjusted as, for example, by selecting the thickness and flexibility of thematerial forming spring 348, to ensure that inadvertent release, i.e., inadvertent camming, due to normal vibration and jolting and jarring and, especially, the normal vibration and bouncing and bumping that occurs during travel of the camper, is prevented because the spring bias force is not overcome by these occurrences. On the other hand, whencam member 354 is in the cammed orientation (FIG. 16), there is a slightly increased force oncam surface 358 applied byspring 348 that is tightened ascoupler 334 was cammed.Cam member 354 must be constructed to securely supportcoupler 334 in the cammed direction. - As best shown in FIGS. 16 and 17, in one embodiment,
cam member 354 is configured to have a roundededge 360 betweensupport surface 358 andcam surface 356.Surfaces cam member 354 to smoothly pivot alongbottom end 342 ofcoupler 334. Suitable materials, e.g., moldable nylon and plastic materials, are known in the art. In one embodiment,cam member 354 is constructed from a very strong but resilient nylon or plastic material. One possible product is the plastic known as DELRIN, a product of E.I. du Pont D Nemours & Co., Inc. In addition, this material and similar materials are readily available, moldable, durable and inexpensive. As best shown in FIG. 16,cam surface 356 is configured to have aslight slope 362 toward roundededge 360 betweencam surface 356 andsupport surface 358. Ifcam lever 332 is operated only partially, the force ofcoupler 334 upon sloped surface ofcam surface 356 will tend to causecam member 354 to “flip” back into the uncammed orientation. In this manner,cam member 354 is prevented from resting in a relatively unsafe position that is between the fully cammed orientation and the fully uncammed orientation. Whencam level 332 is operated fully, however,cam member 354 is very securely positioned in the cammed orientation. - It will be appreciated that various means for pivotally supporting
cam member 354 withinconnector box 266 could be used. A shown in FIG. 18, one embodiment ofcam member 354 is adapted to be added toconnector box 266 that is previously unprepared for use withquick release arrangement 330.Cam member 354 is formed with receivingholes 370 for securely receiving a connectingend 372 ofcam lever 332 on one side and abolttype connector 372 on the opposite end. Bolt-type connector 374, in one embodiment, is made of a sturdy smooth material such as hard nylon or plastic. It will be appreciated that holes may be provided or may be made inconnector box 266 to correspond to receivingholes 370 andcam member 354 may then be positioned withinconnector box 266 with receivingholes 370 aligned with the holes inconnector box 266. The bolt-type connector 374 and connectingend 372 ofcam lever 332 are passed through the holes inconnector box 266 and into respective receivingholes 370 to thereby provide the pivotally supportedcam member 354 ofquick release arrangement 330. In addition, for ease of removal ofcam member 354,small access holes 376 are provided withincam member 354 to connect with receivingholes 370 in a manner that permits the tip of a screwdriver or other small object to be inserted intoaccess holes 376 such that the connecting end ofcam lever 332 or bolt-type connector 374 may be pushed out of engagement with therespective receiving hole 370. In one embodiment,cam lever 332 and bolt-type connector 374 are composed of a strong but resilient nylon or plastic material. -
Quick release arrangement 330 of the present invention is very safe. Sincecoupler 334 is biased byspring 348 to remain engaged withsecond gear 260, the spring bias force must be overcome by pivotingcam member 354 to effect camming, i.e., disengagement ofsecond gear 260 fromcoupler 334. Therefore, only rotational motion ofcam lever 332 will overcome the spring bias force and effect camming. - Referring again to FIG. 12,
connector plate 256 andconnector box 266 maintainfirst gear 258 andsecond gear 260 withinfirst aperture 268 andsecond aperture 270, respectively.Connector plate 256 andconnector box 266 are separated from each other a predetermined distance through the combination offasteners 310 andspacers 312.Fasteners 310 pass through retainingholes 274 inflange 282 and intospacers 312.Fasteners 310 extend into retainingholes 274 inconnector plate 250 that includes, optionally, a threaded portion that engages with the threads offasteners 310. Alternatively, retainingholes 274 inconnector plate 250 are devoid of threads andfasteners 310 pass therethough to attach to guide element (not shown). Various other means are applicable for attachingconnector plate 256 toconnector box 266. Additionally, there are various other means for attachinggear reduction assembly 252 to guide element (not shown) or other portion of slidingsystem 40. For example,gear reduction assembly 252 may be bolted, welded, brazed, glued, or integrally formed with slidingsystem 40. - Both
manual activation assembly 230 andmotorized activation assembly 250 are structures capable of performing function of driving means for activating said gear mechanism to extend and retract the slide-out compartment. Other structures that are capable of performing the same function, in light of the teaching contained herein, are known by one skilled in the art. Additionally, the combination ofmanual activation assembly 230 and/ormotorized activation assembly 250 withgear mechanism 44 is one structure capable of performing the function of moving means for extending and retracting the slide-out compartment. It will be appreciated that various other moving means are capable of performing the same function, and are known by one skilled in the art. - Referring now to FIGS. 19A and 19B, a alternate embodiment of a
slider rail 380 is depicted.Slider rail 110, as previously discussed above, supports the majority of the weight associated with slide-out compartment 30, thereby acting as a load-bearing member. When the size of slide-out compartment 30 increases, however,slider rail 110 carries more load and requires strengthening. One configuration that provides increased strength toslider rail 110 is depicted asslider rail 380. The majority of the features discussed with respect toslider rail 110 also relates toslider rail 380. As shown,slider rail 380 includes alower slider rail 384 and anupper slider rail 386, thereby forming a load-bearing member.Upper slider rail 382 andlower slider rail 384 are attached together at their respectivemiddle portions 386, 388, thereby forming an I-beam structure. The I-beam construction, as known in the art, is strong, rigid, and capable of providing the necessary support. - Alternatively, as shown in FIG. 19B, a
tubular member 390 may be fixably attached toslider rail 384, such that strength is provided while retaining the capability oflower slider rail 384 to engage withgear mechanisms 44.Tubular member 390 is depicted as having a square cross-section, however, it can be appreciated that one skilled in the art can identify various other cross-sectional shapes that are appropriate, such as but not limited to, oval, rectangular, trapezoidal, or the like. - Generally, it will be appreciated that various other configurations of
slider rail 380 are possible and other methods may be used to increase the strength ofslider rail 380. - The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. All changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (20)
Priority Applications (6)
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US10/044,481 US20020056329A1 (en) | 1999-11-23 | 2002-01-11 | Sliding mechanisms and systems |
US10/308,646 US6981728B2 (en) | 1999-11-23 | 2002-12-02 | Sliding mechanisms and systems |
CA 2416176 CA2416176A1 (en) | 2002-01-11 | 2003-01-13 | Sliding mechanisms and systems |
US10/909,991 US7052064B2 (en) | 1999-11-23 | 2004-08-03 | Sliding mechanisms and systems |
US11/112,168 US7052065B2 (en) | 1999-11-23 | 2005-04-22 | Sliding mechanisms and systems |
US11/112,427 US7234747B2 (en) | 1999-11-23 | 2005-04-22 | Sliding mechanisms and systems |
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US09/448,410 US6338523B1 (en) | 1999-11-23 | 1999-11-23 | Sliding mechanisms and systems |
US10/044,481 US20020056329A1 (en) | 1999-11-23 | 2002-01-11 | Sliding mechanisms and systems |
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US09/448,410 Division US6338523B1 (en) | 1999-11-23 | 1999-11-23 | Sliding mechanisms and systems |
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US10/909,991 Expired - Lifetime US7052064B2 (en) | 1999-11-23 | 2004-08-03 | Sliding mechanisms and systems |
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-
1999
- 1999-11-23 US US09/448,410 patent/US6338523B1/en not_active Expired - Lifetime
-
2000
- 2000-10-10 CA CA002323031A patent/CA2323031C/en not_active Expired - Fee Related
-
2002
- 2002-01-11 US US10/044,481 patent/US20020056329A1/en not_active Abandoned
-
2004
- 2004-08-03 US US10/909,991 patent/US7052064B2/en not_active Expired - Lifetime
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US20040066060A1 (en) * | 1999-11-23 | 2004-04-08 | Happijac Company | Sliding mechanisms and systems |
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US20060290159A1 (en) * | 2003-07-31 | 2006-12-28 | Rasmussen C M | System for Lifting Various Objects in a Vehicle |
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US20060181110A1 (en) * | 2003-07-31 | 2006-08-17 | Happijac Company | Bed that moves vertically and converts into a couch |
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US6871897B1 (en) | 2004-01-02 | 2005-03-29 | Barker Manufacturing Co. | Low profile slideout assembly |
US20050230989A1 (en) * | 2004-04-20 | 2005-10-20 | Lippert Components, Inc. | Wall slide |
US20050239586A1 (en) * | 2004-04-27 | 2005-10-27 | Nebel Michael W | Bed lift |
US20070089554A1 (en) * | 2005-10-21 | 2007-04-26 | Gieskes Koenraad A | Tetrahedron rack and pinion drive |
US20100199791A1 (en) * | 2005-10-21 | 2010-08-12 | Universal Instruments Corporation | Tetrahedron rack and pinion drive |
US20100116851A1 (en) * | 2008-11-07 | 2010-05-13 | Hilti Aktiengesellschaft | Squeeze-out dispenser |
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Also Published As
Publication number | Publication date |
---|---|
CA2323031A1 (en) | 2001-05-23 |
CA2323031C (en) | 2008-01-08 |
US20050006924A1 (en) | 2005-01-13 |
US7052064B2 (en) | 2006-05-30 |
US6338523B1 (en) | 2002-01-15 |
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Legal Events
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AS | Assignment |
Owner name: HAPPIJAC COMPANY, UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RASMUSSEN, C. MARTIN;REEL/FRAME:014940/0328 Effective date: 20040326 |
|
STCB | Information on status: application discontinuation |
Free format text: EXPRESSLY ABANDONED -- DURING PUBLICATION PROCESS |
|
AS | Assignment |
Owner name: RECREATION SYSTEMS INC. DBA HAPPIJAC COMPANY, UTAH Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:RASMUSSEN, AARON J;RASMUSSEN, C MARTIN;RASMUSSEN, S ELIZABETH;AND OTHERS;REEL/FRAME:017870/0774;SIGNING DATES FROM 20060610 TO 20060612 |
|
AS | Assignment |
Owner name: LIPPERT COMPONENTS, INC., INDIANA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:RECREATION SYSTEMS INC. DBA HAPPIJAC COMPANY;REEL/FRAME:017921/0977 Effective date: 20060612 |