Convertible toddler chair and standing platform

Abstract

A toddler chair convertible to a standing platform including a foldable support frame with front and rear legs configured to stably support a standing platform and an elevated seat assembly for a toddler. The seat assembly includes a seating portion, a backrest portion, and a moveable elevating frame. The seating assembly is vertically moveable in relation to the support frame. The seating and backrest portions are moveable in relation to each other. A linkage interconnecting the seating portion and the support frame controls movement of the seating portion as the seat assembly is moved in relation to the support frame. In one configuration the seating assembly disposed generally above the platform and is operable as a seat for a child. In a second configuration, the seating portion is repositioned into general alignment with the backrest portion to allow a child to stand on the platform below.

Description

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application is a continuation of application 18 / 750,564, filed on June 21, 2024, application 19 / 029,671, filed on January 17, 2025, and claims priority benefit to provisional patent application 63 / 532,188 filed on August 11, 2023, and provisional patent application 63 / 929,161, filed on December 2, 2025, the entirety of which are incorporated by reference herein.FIELD OF THE INVENTION

[0002] The present disclosure is generally directed to portable seating for small children, and more particularly to a portable seat that may be quickly and conveniently converted for use as a highchair or a standing platform.BACKGROUND OF THE INVENTION

[0003] Portability and convenience of use of childcare accessories are increasingly important considerations among consumers. This is particularly important for chairs, stools, and other products designed primarily for use in the home where space is usually limited. To this end, many such products are designed to be easily adaptable to fulfill multiple needs with a single product and collapsed into a compact configuration when not in use.

[0004] Many learning activities for children occur in the home kitchen or other locations having elevated counters or work surfaces. Elevated work surfaces in most residential settings are typically located approximately 36 inches above the floor. In order for young children to view and access these elevated surfaces, an elevated step or platform is required. Young children may have difficulty maintaining stability and balance on a step stool. Optimal access to countertop surfaces for a young child requires a step height of 15 to 18 inches above the floor. These demands have given rise to a new device, the learning tower, which provides an optimally located standing platform and an elevated structure above the platform to provide stabilizing handholds or guards for the child.

[0005] Stability of a standing platform requires a substantial spatial footprint which presents problems for storage of the apparatus when not in use. The problem is compounded when the standing platform structure is single purpose and does not include adaptability to allow it to fulfill other needs for the child.

[0006] What is needed is a multi-purpose structure that can fulfill the standing platform need and a secondary need, such as an elevated toddler chair or highchair. Additional benefits will be realized by a combination standing platform and toddler chair that is foldable into a compact configuration for storage when not in use. Other features and advantages will be made apparent from the present specification. The teachings disclosed extend to those embodiments that fall within the scope of the claims, regardless of whether they accomplish one or more of the aforementioned needs.SUMMARY OF THE INVENTION

[0007] In one aspect, a toddler chair that is easily convertible to a standing platform without the need for tools is provided. The toddler chair includes a support frame having a front leg and a rear leg configured to stably support a standing platform and an elevated seat assembly for the toddler. The seat assembly includes a seating portion and a backrest portion connected to an elevating frame. The seat assembly may include an armrest. The seating assembly is vertically moveable in relation to the support frame. The seating and backrest portions are moveable in relation to each other. A linkage interconnecting the seating portion and the support frame controls movement of the seating portion as the seat assembly is moved in relation to the support frame. In one mode of use the seating assembly disposed generally above the platform and is operable as a seat for a child. In a second mode of use, the seating portion is repositioned into general alignment with the backrest portion to allow a child to stand on the platform below.

[0008] In another aspect, a convertible toddler standing platform and chair includes a front leg and a rear leg that are hingedly connected to allow the legs to be positioned in a compact arrangement when not in use. A moveable platform is pivotally coupled to the front leg. A pivoting linkage interconnects the platform and the rear leg. The platform and pivoting linkage allow the front and rear legs to be selectively positioned in an operable configuration for use and a folded configuration for storage. When configured for use, the platform is generally horizontally disposed between the front and rear leg with the distal legs ends spaced apart for stability. A travel stop is provided to engage the linkage and retain it and the platform in a stationary operable position. The pivot arrangement of the linkage is positioned slightly over-center when the travel stop is engaged to inhibit unintended reverse pivoting movement of the linkage while the standing platform / chair is in use. The over-center arrangement also minimizes stresses in any latching mechanism that may be provided to prevent accidental or unintentional movement from the operable configuration. Platform movement toward the folded configuration pivots the rear leg toward the front leg for a more compact stowable arrangement.

[0009] In another aspect of the invention, a toddler chair includes a support frame having a front leg and a rear leg configured to stably support a standing platform and an elevated seat assembly for a toddler. The front and rear legs are hingedly connected to allow the support frame to be arranged in a deployed configuration for use or a folded configuration for storage when not in use. The standing platform is pivotally coupled to the front leg and to the rear leg through an interconnecting pivoting linkage which coordinates movement of the support frame. When folded, the standing platform is repositioned to stabilize the folded frame and allow it to stand unsupported in a generally upright and stable manner.

[0010] In another aspect of the invention, a toddler chair includes a support frame having a front leg and a rear leg configured to stably support a standing platform and an elevated seat assembly for a toddler. The front and rear legs are hingedly connected to allow the support frame to be arranged in a deployed configuration for use or a folded configuration for storage when not in use. A moveable foot is provided on a distal end of the rear legs which extends the effective length of the rear legs and allows the platform to stably stand when in the folded configuration. The moveable foot is biased toward the extended position. The biasing force is easily overcome when the chair is moved to the unfolded configuration and angled relation of the rear leg to a floor surface moves the moveable foot into a retracted position.

[0011] In another aspect of the invention, a toddler chair includes a support frame having a front leg and a rear leg configured to stably support a standing platform and an elevated seat assembly for a toddler. The seat assembly includes a seating portion and a backrest portion which are moveable in relation to each other and the frame. A linkage interconnecting the seating portion and the support frame controls movement of the seating portion as the seat assembly is moved in relation to the support frame. In one mode of use the seating assembly disposed generally above the platform and is operable as a seat for a child. In a second mode of use, the seating portion is repositioned into general alignment with the backrest portion to allow a child to stand on the platform below. The front and rear legs are hingedly connected to allow the support frame to be arranged in a deployed configuration for use or a folded configuration for storage when not in use. Movement of the standing platform and seat assembly are coordinated so that the frame may be folded and unfolded when the seat assembly is configured in either the seating mode or the standing mode.

[0012] In another aspect, a convertible standing platform and toddler chair apparatus includes a support frame having a front leg and a rear leg configured to stably support a standing platform and an elevated seat assembly for the toddler. The seat assembly includes a seating portion and a backrest portion connected by an elevating frame. The seating assembly is vertically moveable in relation to the support frame, the vertical movement reconfiguring the seat assembly for use as a toddler seat or for a standing platform. The seating and backrest portions are moveable in relation to each other. Moving the seating assembly toward the standing platform mode of use (raised elevating frame) moves the seating portion into alignment with the backrest portion and generally shifts the seat assembly rearwardly to allow the standing platform to be positioned closely adjacent to a cabinet supporting a countertop thereby allowing a child standing on the platform to access the countertop. Moving the seating assembly to the seating mode (lowered elevating frame) configures the seat assembly into a chair-like configuration for supporting a seated toddler.

[0013] In another aspect, a convertible standing platform and toddler chair apparatus includes one or more interlock mechanisms configured to preclude placing the standing platform and toddler chair in unintended operational configurations. An interlock mechanism is configured to prevent installation of a standing safety rail unless the apparatus is positioned in the standing platform configuration. The interlock mechanism may also prevent apparatus reconfiguration once the standing safety rail is installed.

[0014] In another aspect of the invention, a convertible standing platform and toddler chair apparatus includes a support frame having a front leg and a rear leg configured to stably support a standing platform and an elevated seat assembly for a toddler. The apparatus may further include an infant seat adapter to engage with the convertible standing platform and toddler chair apparatus and allow apparatus configuration as an infant highchair. An interlocking mechanism is provided and configured to prevent installation of the infant seat adapter unless the apparatus support frame is properly positioned. The interlock mechanism may also be configured to prevent movement of the support frame while the infant seat adapter is installed.

[0015] In another aspect of the invention, a convertible standing platform and toddler chair apparatus includes a support frame having a front leg and a rear leg configured to stably support a standing platform or a seat assembly for a toddler when so configured. The seat assembly includes a seating portion and a backrest portion connected to a moveable frame which may be raised and lower with respect to the legs. The backrest portion and moveable frame assembly is vertically moveable in relation to the support frame, movement thereof controlling the movement of the seating portion. A linkage interconnecting the seating portion, the moveable frame, and the support frame controls movement of the seating portion as the seat assembly is moved in relation to the support frame and interfaces with an interlock mechanism to coordinate the seating assembly configuration with accessory attachments to the convertible standing platform and toddler chair apparatus.

[0016] In another aspect of the invention, an interlock mechanism is provided comprising a telescoping member received by a leg of the convertible standing platform and toddler chair apparatus, the telescoping member being moveable between raised and lowered position, an inner slider disposed within the telescoping member and moveable between first and second positions, a lock device coupled to the inner slider, a first arm and a second arm hinged to the lock device and each moveable between generally opposing extended and retracted positions, a lock button disposed on the first arm and a lock tab disposed on the second tab, wherein the lock button and the lock tab are engageable with an aperture on the leg member to retain the telescoping member in a fixed position, and the inner slider position engaging the lock button or the lock button and lock tab dependent upon its position.

[0017] In another aspect of the invention, positioning the inner slider toward the first position while the telescoping member is in the raised position disengages the lock tab from the lock aperture and allows limited movement of the telescoping member.

[0018] In another aspect of the invention, a linkage coordinating movement of a seating panel with movement of the telescoping member, the linkage having a releasing structure configured to engage the lock button and move the first arm toward the retracted position as the telescoping member is moved toward the lowered position.

[0019] In another aspect of the invention, the seat linkage moves generally in a first direction as the telescoping member moves toward the raised position, continuing movement of the linkage in the first direction once the telescoping member reaches the raised position and begins moving toward the lowered position engages a travel stop thereby causing an over-center locking of the linkage which prevents further movement of the linkage in the first direction and retains the telescoping member stationary.

[0020] In another aspect of the invention, an interlocking method for managing the configuration of a convertible standing platform and toddler chair apparatus includes providing a base member having an interior channel configured to telescopically receive a telescoping member, the telescoping member being moveable between raised and lowered positions, an inner slider disposed within the telescoping member, the inner slider moveable between generally opposing first and second positions, and a lock device coupled to the inner slider, the lock device having a first arm and a second arm, each arm hinged to the inner slider and moveable between generally opposing extended and retracted positions, the first arm having a lock button, the second arm having a lock tab; moving the telescoping member to the raised position while the inner slider remains in the first position, movement of the telescoping member engaging the lock button in a receptacle on the base member to secure the telescoping member in at least the elevated position.

[0021] In another aspect of the invention, an interlocking method for managing the configuration of a convertible standing platform and toddler chair apparatus includes providing a seat assembly with a seating panel, a seat linkage to coordinate movement of the seating panel between first orientation and a second orientation with movement of the telescoping member between the raised and lowered positions; moving the telescoping member from the lowered position toward the raised position thereby causing wherein the seat linkage to move generally in a first direction; moving the telescoping member toward the lowered position once it reaches the raised position as the seat linkage continues movement in the first direction; providing a travel stop which limits movement of the seat linkage in the first direction, engagement of the seat linkage with the travel stop positioning the telescoping member in a locked position in which over-center locking of the seat linkage prevents further movement of the seat linkage in the first direction thereby preventing further movement of the telescoping member toward the lowered position; and moving the inner slider to the second position, movement thereof moving the lock tab into engagement with the receptacle, engagement of the lock button and the lock tab preventing movement of the telescoping member from the locked position.

[0022] In another aspect of the invention, an interlocking method for managing the configuration of a convertible standing platform and toddler chair apparatus includes moving the inner slider to the first position thereby disengaging the lock tab from the aperture; moving the telescoping member from the locked position toward the raised position thereby causing the seat linkage to move generally in a second direction opposite from the first direction; and moving the telescoping member toward the lowered position as the seat linkage continues moving in the second direction, wherein the seat linkage is configured to disengage the lock button and allow continued movement of the extension member toward the lowered position. moving the extension member to the lowered position.

[0023] In another aspect of the invention, an interlocking method for managing the configuration of a convertible standing platform and toddler chair apparatus includes providing an actuator operably connected to the inner slider; providing a plurality of distinct accessories each selectively connectable to the convertible child support and having an insert tab configured to interface with the actuator; the insert tab for each distinct accessory configured to move the inner slider toward pre-determined position unique to the distinct accessory; and coupling one of the plurality of distinct accessories to the convertible child support by initiating engagement of the insert tab with the actuator wherein the interlock mechanism is prevented from full engagement by the insert tab with the actuator unless the extension member is correctly positioned for the designated accessory.

[0024] Other features and advantages of the present invention will be apparent from the following more detailed description of the preferred embodiment, taken in conjunction with the accompanying drawings which illustrate, by way of example, the principles of the invention.BRIEF DESCRIPTION OF DRAWINGS

[0025] The advantages of this invention will be apparent upon consideration of the following detailed disclosure of the invention, especially when taken in conjunction with the accompanying drawings wherein:

[0026] FIG. 1 is a perspective view of an embodiment of a toddler chair and standing platform configured as a standing platform and including a safety rail;

[0027] FIG. 2 is an elevation view of the toddler chair and standing platform of FIG. 1 with the safety rail removed;

[0028] FIG. 3 is a perspective view of the present invention shown configured in a toddler seat mode;

[0029] FIG. 4 is a side elevation view of the embodiment of FIG. 3 shown configured in a toddler seat mode;

[0030] FIG. 5 is a side elevation view of the embodiment of FIG. 3 shown in the toddler seat mode and folded position;

[0031] FIG. 6 is a side elevation view of the embodiment of FIG. 1 shown in the standing platform mode and folded position with the safety rail removed;

[0032] FIGS. 7 through 9 illustrate the toddler chair and standing platform as it is moved between the toddler seat mode and the standing platform mode;

[0033] FIGS. 10 through 12 provide a partial view of an embodiment of the folding and seat repositioning linkage as the invention is moved between the toddler seat mode and the standing platform mode;

[0034] FIGS. 13 and 14 show an embodiment of the folding joint enabling the frame to move between folded and unfolded positions;

[0035] FIGS. 15 and 16 show an embodiment of a moveable foot enabling the frame to stably stand while in the unfolded position and in the folded position;

[0036] FIGS. 17 and 18 are partial side views on an embodiment of an interlock linkage coordinating movement of the standing platform with movement of the elevating frame;

[0037] FIGS. 19 through 22 are partial views of an embodiment of an internal frame interlocking mechanism;

[0038] FIGS. 23 through 25 are partial views of the seat folding linkage and interface with the interlocking mechanism;

[0039] FIG. 26 illustrates installation of an accessory safety rail for use when the invention is configured in standing platform mode;

[0040] FIG. 27 illustrates installation of an accessory infant seat for use when the invention is configured in the toddler seat mode;

[0041] FIG. 28 is a sectional elevation view of the accessory infant seat shown in FIG. 27; and

[0042] FIG. 29 is a rear perspective view of the toddler chair and standing platform shown with the accessory infant seat installed.

[0043] Wherever possible, the same reference numbers will be used throughout the drawings to represent the same parts.DETAILED DESCRIPTION OF THE INVENTION

[0044] Referring to the figures, a convertible toddler chair and standing platform apparatus 10 is shown with a collapsible frame 15 comprising a front leg 20, a rear leg 30, and a platform panel 40. The front and rear leg are pivotally coupled at their proximal ends by hinge 18 and pivotable about a hinge axis 100 between an unfolded configuration (FIGS. 1-4) and a folded configuration (FIGS. 5-6). When unfolded, feet 25, 35 provided on the distal ends of the front and rear legs support the apparatus 10 on a floor or similar level surface.

[0045] In the folded position of collapsible frame 15 the distal ends of the front and rear legs 20, 30 are brought closely adjacent to reduce the space required for storage. Pivoting movement of the platform 40 moves its rearward end downwardly proximate to the distal ends of the front and rear legs 20, 30. The platform panel may be further configured so that when in the folded orientation, the rearward end may contact the floor surface and, in concert with the front leg foot 25, allow the folded apparatus to stand generally upright on a floor surface.

[0046] FIGS. 13 and 14 illustrate an embodiment of the folding hinge 18 which includes travel limiting features. Pivot guides 671, 672 are secured to the front leg 20 of the folding frame 15 and extend inwardly in a direction parallel to the frame folding axis. A housing 34 may be provided on the rearward leg 30 at the folding hinge 18. The housing 34 may include travel slots 342, 344 which are arcuately arranged about the folding hinge axis 100. The pivot guide 671, 672 extend away from their connection to the front leg a distance sufficient to project through the travel slots 342, 344. The interface pivot guides and travel slots interface to limit the pivoting movement or the rearward leg 30 in relation to the front leg 20. Pivot connection 655 may be integrated with pivot guide 672.

[0047] In order to allow the folded frame to stand stably when folded, an extendable foot 37 is provided on the distal end 35 of each rearward leg 30. The extendable foot 37 is moveable between generally opposing retracted (FIG. 15) and extended positions (FIG. 16) and may be pivotally connected to the leg at pivot 39. A housing 36 may be provided to receive the extendable foot 37 when it is in the retracted position and allow the distal end 35 of the rearward leg to support the frame on a floor or supporting surface. A biasing element 38 may be provided to bias the extendable foot into the extendable foot 37 toward the extended position. The biasing element 38 may be a compression spring, torsion spring, or other known resilient member capable of producing a biasing force on the extendable foot. One or more travel stops may be provided to limit extendable foot movement toward at least the extended position. When the frame 15 is folded closed and lifted from the supporting surface, the extendable foot 37 rotates to extend downwardly of the rearward leg, extending the effective length of the rearward leg 20 to allow the frame to stably stand while the frame is in the folded configuration. When the frame 15 is opened and positioned for use, the extendable foot 37 contacts the floor or supporting surface at an angle causing it to rotate against the spring bias toward the retracted position. The rotational movement positions the extendable foot 37 within the housing 36 and at least so that the distal end 35 of the rearward leg contacts the floor without interference by the extendable foot. The spring biasing force is selected to be sufficiently low so the weight of the chair easily overcomes the spring biasing force and allows the foot to rotate toward the retracted position.

[0048] A seat assembly 50 is provided and selectively configurable as a seat to support a toddler occupant (seating mode) or to reposition a portion of the seat to provide clearance for a toddler to stand comfortably on the platform panel 40 (standing mode). The seat assembly 50 includes a seating panel 54 and a backrest panel 56. An elevating frame 51 is moveably connected to frame 15 adjacent to the hinge 18. The elevating frame 51 is selectively positionable in generally opposing lowered (FIG. 1) and raised (FIG. 2) positions which reconfigure the seat into the corresponding seating and standing modes, respectively. The elevating frame 51 may include a downward extending telescoping member 55 which engages an interior channel 201 of the front leg 20 to facilitate raising and lowering of the elevating frame 51. The elevating frame 51 may also include an armrest 52. Elevating frame 51 may be generally U-shaped in a horizontal plane to extend behind the backrest pane 56 and forwardly on either side as armrests 52.

[0049] In the standing platform mode, the seat assembly, including the elevating frame 51, the seating panel 54 and the backrest panel 56, may be configured to create a guide barrier generally along three peripheral sides of the platform panel 40 and at a location above the platform panel surface to provide a handhold for stability of a child user of the standing platform. The telescoping motion of the elevating frame 51, preferably aligned with the angled orientation of the front leg 20, causes the backrest portion 56 which may be fixed to the elevating frame 51 to move upwardly and slightly rearwardly. This rearward motion shifts the guide barrier formed by the backrest and seating panels rearward in relation to the frame thereby allowing the entire standing platform apparatus to be more closely located adjacent to a cabinet face and offer better access for the child user to a countertop work surface.

[0050] Seating panel 54 and backrest panel 56 may be hingedly or pivotally connected allowing rotational movement of the seating panel 54 between a generally horizontal alignment generally parallel to platform 40 below and angled in relation to the backrest panel allowing its use as a seat to support a child (seating configuration, FIGS. 3, 4) and a generally upright orientation in which the seating panel surface is rotated downwardly and rearwardly to a position generally aligned with the backrest panel surface which allows a clear space above the platform panel 40 to allow a toddler to stand on the platform panel 40 below for use of the apparatus 10 as a standing platform or learning tower (standing configuration, FIGS. 1, 2). In this configuration, the seating panel and backrest panel surfaces form an upright barrier adjacent to the rear of the platform for a child user to lean against while standing on the platform and limits child movement toward the rearward end of the platform. The backrest panel 56 may be connected to the elevating frame 51 for movement therewith. The seating panel 54 may be hingedly or pivotally connected to the backrest panel 56 and may move about seatback hinge axis 101. The seatback hinge axis 101 is parallel to the folding axis 100, that is arranged generally transversely. The seating and backrest panels 54, 56 may be configured to limit the extent of downward rotational movement of the seating panel 54. Movement of the seating panel 54 is affected by raising and lowering the elevating frame 51 and attached backrest panel 56. Movement of the seating panel 54 may also be affected by user movement of the seating panel directly.

[0051] A seat linkage 60 interconnecting the foldable frame 15 and the seating panel 54 may be provided and configured to coordinate seating panel 54 movement with movement of the telescoping elevating frame 51 between elevated and lowered positions. The linkage 60 may include a primary link member 651 and a secondary link member 652. Primary link member 651 may be pivotally connected to the second pivot point 68 on seating panel 54 at a pivot connection 681. An elongate guide slot 654 may be provided in the primary link member generally opposite of the pivot connection 681. The guide slot engages a guide member 671 affixed on the front leg 20 of the foldable frame 15. The guide slot 654 may be configured to allow the guide member 671 to move in the slot corresponding to movement of the seating panel 54 between toddler seat mode (FIGS. 3 & 7) and standing platform mode (FIGS. 1 & 9). Primary link member 651 may be curved to improve fluidity of motion as the seating panel is moved.

[0052] Secondary link member 652 may include pivoting connections at opposing ends, a first connection 655 pivotally connected to the front leg 20 of the foldable frame 15 and a second connection 656 pivotally connected to first link member 651. The location of second connection 656 is proximate to pivot connection 681 and configured to coordinate with the primary link member 651 to rotate the seating panel 54 with vertical movement of the elevating frame 51. The pivoting connections of secondary link member 652 in combination with the positioning of primary link member so that an end of the guide slot 654 abuts the guide member 671 to stabilize support for the seating panel 54 when the seating panel is in the horizontal, seating configuration.

[0053] The configuration of the link members 651, 652, pivot locations, and guide slot 654 is configured to limit the range or rotational motion of the seating panel 54 as the telescoping member 55 of the elevating frame 51 is raised and lowered. Moving the telescoping member from the lowered position toward the raised position causes the seat linkage to move generally in a first direction. The guide slot 654 configuration and may permit additional vertical movement of the elevating frame 51 to an acme in the second direction and allow the seating panel 54 to rotate toward the standing position, continued rotation of the seating panel aligning the seat linkage over-center, accompanied by a slight movement of the elevating frame toward the first position. Once the telescoping member 55 reaches its acme, it may begin moving toward the lowered position while the seat linkages continues movement in the first direction.

[0054] A travel stop limits movement of the seat linkage in the first direction, engagement of the seat linkage with the travel stop positioning the telescoping member in a locked position in which over-center locking of the seat linkage prevents further movement of the seat linkage in the first direction thereby preventing further movement of the telescoping member toward the lowered position. The travel stop may be implemented by the configuration of the guide slot 654 interacting with guide member 671 to limit linkage movement. The over-center alignment of the link members when the elevating frame is raised locks the seating panel in the standing position configuration. The weight of the elevating frame 51 and backrest panel 56 holds position in an over-center alignment of the seat linkage 60.

[0055] A retention interlock mechanism 70 may also be provided on elevating frame 51 to secure the elevating frame in at least the raised position corresponding with positioning of the seating panel 54 in the seating configuration and the linkage arranged in the over-center lock. In an embodiment, the retention interlock mechanism 70 includes a leg lock device 220 which is pivotally coupled to the elevating frame and moveable between first (retracted) and second (extended) positions. A resilient member 228 is provided to bias the leg lock device toward the first position. A leg lock button 224 is provided distal from the pivot connection with the elevating frame configured to engage an aperture 202 on front leg 20 when the elevating frame is in a predetermined position to secure the elevating frame vertically. The predetermined position includes at least the raised position of the elevating platform 51. The seating panel seat linkage 60 may be arranged to interface with the position interlock mechanism 70 and depress the leg lock button 224 to release the interlock mechanism 70 under certain conditions, discussed further below.

[0056] Reconfiguring the seating panel 54 to provide a toddler chair requires lifting the elevating frame 51 slightly toward the second position while initiating rotating of the seating panel 54 toward the horizontal seating position which releases the over-center linkage alignment and allows continued movement of the seating panel 54 toward the seating configuration and lowering the elevating frame 51 toward the first position. The latching mechanism 70 may be configured to secure the elevating frame in the lowered configuration. Alternatively, a separate latching mechanism may be provided. A latching mechanism is not essential for the lowered elevating frame configuration since gravity works to maintain the elevating frame in the lowered configuration.

[0057] The retention interlock mechanism 70 may limit the conditions under which the elevating frame 51 can be raised and lowered. In an embodiment, the interlock mechanism 70 comprises an inner leg slider 210 moveably disposed in the telescoping extension member 55 of the elevating frame 51. In inner leg slider 210 is configured for bi-directional movement within the interior of the telescoping extension member 55. The leg lock device 220 may be connected to the inner leg slider for simultaneous translation within the telescoping extension member 55. A resilient member 205 is provided to bias the position of the inner leg slider 210 toward a first position.

[0058] In an alternate embodiment, the seat linkage 60 may comprise an integrated member 60A including a first pivot location 655, a second pivot location 681 and a guide slot 654 which engages guide member 671 to control the movement of the seating panel 54 as the elevating frame 51 is raised and lowered. The integrated member 60A may also include a cam surface 690 which interfaces with the leg lock button 228 of the leg lock device 220 to release the retention mechanism 70 and allow the inner leg slider to return to its first position corresponding to the lowered position of the elevating frame 51.

[0059] Actuation and movement of the leg lock device 220 may be effected by an actuator. The actuator may include a rail slider 230 moveably disposed within the armrest 52, the rail slider being moveable between generally opposing first and second positions. A cable 240 connected between the inner leg slider 210 and the rail slider 230 coordinates movement between the first and second positions and is configured so that the resilient member 205 also biases the rail slider 230 towards a first position. The rail slider 230 may be moved by an actuator insert provided on an accessory which is selectively coupled to the U-shaped frame armrests 52. The extent of rail slider movement of by interaction with the actuator insert is transferred to movement of the inner leg slider. Each accessory may be provided with an insert tab 92 having a length unique to the accessory to move the rail slider by a predetermined amount necessary for the accessory to be properly installed on the toddler chair and standing platform apparatus 10.

[0060] The seating panel 54 seat linkage 60 may be configured to release (depress) the leg lock button 224 allowing the elevating frame to be lowered. Lowering the elevating frame from this position causes movement in the linkage 60 to move. As first link member 651 moves to from the standing tower mode (FIG. 18), it engages the leg lock button 224, depressing it to release from engagement with the front leg 20 and allow the telescoping extension member 55 to slide telescope into the front leg interior channel 201 allowing the elevating frame be lowered and the as the seat base moved into the toddler seat mode configuration.

[0061] The convertible toddler chair and standing platform apparatus 10 may include an accessory safety rail 90 that is selectively attachable to the U-shaped frame armrests 52 to encircle a child standing on the standing platform. The accessory safety rail is intended to be used only when the apparatus is configured as a standing platform. The interlock mechanism may be configured to prevent installation of the safety rail unless the standing platform apparatus is properly configured, specifically the elevating frame 51 being in the raised position. The safety rail 90 may include actuator inserts 92 which are slidingly received into ends of the armrests 52 where they engage rail sliders disposed in opposing armrests on each side of the seating space. The actuator inserts are configured with a specific dimensional configuration to displace the rail slider by a predetermined amount as the inserts are installed into the armrests. In order for the actuator inserts 92 to be fully received by the receptacle ends 521 of armrests 52 and latched into position, the rail slider 230 must be allowed to be displaced by at least the length of the actuator inserts 92. The cable 240 linking the rail slider 230 and the inner leg slider 210 causes the inner leg slider to be displaced by the same amount. Actuator inserts 92 may include a latching mechanism 94 with a release 96 to retain the actuator insert in the fully engaged position. In an embodiment, the latching mechanism may engage with a receptacle in the armrest 52 to retain the safety rail 90 in a fixed, fully engaged position. The release 96 may momentarily disengage the latching mechanism to allow the safety rail 90 to be removed.

[0062] The leg lock device 220 comprises a first arm 222 hingedly coupled to the inner leg slider 210, a second arm 223 also hingedly coupled to the inner leg slider 210. The first arm 222 includes a leg lock button (projection) 224 disposed opposite of the hinge connection. The second arm 223 includes a leg lock tab 226 disposed opposite of the hinged connection. The first and second arms move generally about a shared movement axis. The first arm 222 is moveable between generally opposing first (extended) and second (retracted) positions. The second arm is also moveable between generally opposing first and second positions. A resilient member 228 is disposed between the first and second arms 222, 223 to bias their movement in opposite directions so that the first arm 222 is biased toward the second position and the second arm 223 is biased toward the first position. The inner rail slider includes a cam 250 configured to drive the second arm 223 of the leg lock device 220 toward the second position (extended) as the inner leg slider approached the second position. As the second arm moves toward the second position, the resilient member 228 compresses and ultimately urges the first arm 222 toward the second position. If the elevating frame 51 is raised, the leg lock projection 224 may extend through aperture 202 on the front leg interior channel 201 to lock the elevating frame in position.

[0063] If the elevating frame 51 is not fully raised, the leg lock buttons 224 are not aligned with aperture 202 and the first and second arms are thus prevented from fully moving to the second position. As the inner leg slider moves toward the second position and the cam 250 urges the first and second arms 222, 223 of the leg lock device 220 toward the extended positions, but the leg lock button will not permit full range of motion of the first arm 222 unless it is aligned with the aperture. Resistance to further movement of the cam 250 on the inner leg slider limits inner leg slider movement toward the second position and consequently rail slider movement. The limitation thus prevents the safety rail from being fully installed unless the elevating frame is in the fully raised configuration.

[0064] Insertion of the actuator inserts 92 fully into the ends of armrests 52 and latched into position shifts the rail slider 230 to its second position and moves the inner leg slider 210 to its second position. In this position of the inner leg slider, the second leg 223 is moved toward the second position by interaction with the cam 250 which overcomes the biasing force of the resilient member 228. The leg lock tab 226 extends through aperture 202 in addition to the leg lock button 224. The aperture 202 is configured so that when both the leg lock button 224 and the leg lock tab 226 project into the aperture 202, no vertical movement of the elevating frame 51 is permitted. Removing the actuator inserts 92, such as by removal of the safety rail 90, releases the inner leg slider 210 and allows it to return to its first position, disengaging cam 250 from the second arm 223, allowing the second arm 223 to move toward the first position under the biasing force of the resilient element 228 and thereby allowing the leg lock tab 226 to retract from the aperture 202. When the leg lock tab 226 is not present in the aperture, slight movement of the elevating frame is permitted. The slight upward movement of the elevating frame is required to release the seat panel linkage from its overcenter lock so the elevating frame can be lowered. This design requires that the standing platform guard rail 90 be removed before the standing platform frame can be moved from the standing platform (elevated) configuration. If the platform safety rail 90 remains in position, the leg lock tab 226 is not released from its projecting position. When the leg lock tab 226 is projecting, the elevating frame 51 is inhibited from movement in the raising direction, which is necessary to move the linkage 60 from its over-center locking arrangement and release the elevating frame so that it may be lowered. With the leg lock tab 226 released (by removing the platform guard rail which releases the inner leg slider), it retracts allowing the elevating frame to be raised and reposition linkage from over-center lock.

[0065] Installing the standing platform safety rail 90 requires the elevating frame to be fully raised so that the leg lock button projects through the aperture in the front leg. If the elevating platform is not fully raised, the leg lock button 224 and leg lock tab 226 will be constrained by the front leg interior channel 201 of the front leg 20. The resilient member 228 between the first and second arms will collapse as first arm and second arm engage cam 250 and are moved outwardly. Continued upward movement of the inner leg slider 210 causes cam 250 to continue urging outward movement of the first arm 222 and the second arm 223. Once the resilient member 228 is fully collapsed, the first and second arms will not move further outwardly. Friction between the arms 222, 223 and the cam 250 prevents any additional upward movement of the inner leg slider. When this occurs, continued upward movement of the inner leg slider 210 is constrained. Cable 240 connecting the inner leg slider and the rail slider is configured to limit the coordinate movement of the rail slider 230 with the inner leg slider 210 and will prevent full movement of the rail slider if the inner leg slider movement is limited. Consequently, the insert tab 92 on the safety rail 90 cannot be fully engaged and locked into place unless the elevating frame 51 is fully raised. Only when the safety rail is fully engaged can the latching mechanism 94 secure the safety rail in position.

[0066] The convertible toddler chair and standing platform apparatus 10 may include an accessory infant seat 150 that adapts the toddler seat configuration to accommodate an infant occupant. The accessory infant seat is intended to be used only when the apparatus is configured as a toddler chair. The interlock mechanism may be configured to prevent installation of the infant seat 150 unless the toddler seat apparatus is properly configured, specifically the elevating frame 51 being in the lowered position. The infant seat 150 may include actuator inserts 92 which are slidingly received into receptacle ends 521 of the armrests 52 where they engage rail sliders disposed in opposing armrests on each side of the seating space. The actuator inserts 92 are configured with a specific dimensional configuration to displace the rail slider by a predetermined amount as the inserts are installed into the armrests. Compared to the safety rail, the actuator inserts 92 on the infant seat are shorted in length and upon insertion into receptacle ends 521 of armrests displace the rail sliders less than that of the safety rail actuator inserts. The reduced displacement leaves the inner leg slider 210 in an intermediate position between the first and second positions, and more significantly, does not allow the leg lock button 224 and leg lock tab 226 to be aligned with aperture 202 on the front leg interior channel 201.

[0067] To assure that the accessory infant seat 150 is installed only when the convertible toddler chair and standing platform apparatus 10, the infant seat may include a blocking flange 152 which is positioned to fit within a space 59 between the seating panel 54 and the backrest panel 56. This is best illustrated in FIGS. 27 - 29. The movement of the seating and backrest panels is configured so the space 59 can received the blocking flange when the toddler chair and standing platform apparatus 10 is in the toddler chair configuration and the elevating frame is in the lowered position. In positions of the elevating frame 51 other than fully lowered, the seating panel 54 blocks movement of the blocking flange 152 fully rearward thereby preventing the actuator inserts 92 on the infant seat from fully engaging and latching into the receptacle ends 521. When the infant seat 150 is installed, movement of the elevating frame is prevented by interference between the blocking flange 152 and the seating panel as it moves to close the space 59 as the elevating frame is raised.

[0068] The actuator inserts 92 of the accessory infant seat 150 may include a latching mechanism 94 with a release 96 to retain the actuator insert in the fully engaged position, similar to the mechanism used with the safety rail. In an embodiment, the latching mechanism may engage with a receptacle in the armrest 52 to retain the infant seat 150 in a fixed, fully engaged position. The release 96 may momentarily disengage the latching mechanism to allow the infant seat 150 to be removed.

[0069] While the exemplary embodiments illustrated in the figures and described herein are presently preferred, it should be understood that these embodiments are offered by way of example only. Accordingly, the present application is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims. The order or sequence of any processes or method steps may be varied or re- sequenced according to alternative embodiments.

[0070] It is important to note that the construction and arrangement of the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in the claims. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present application.

Claims

1. An interlock mechanism for a convertible child support comprising:a leg member having an interior channel configured to telescopically receive a telescoping member, the telescoping member being moveable between raised and lowered positions;an inner slider disposed within the telescoping member, the inner slider moveable between generally opposing first and second positions;a lock device coupled to the inner slider, the lock device having a first arm and a second arm, each arm hinged to the inner slider and moveable between generally opposing extended and retracted positions, the first arm having a lock button, the second arm having a lock tab; a first resilient member coupling the inner slider and the telescoping member, the first resilient member biasing the inner slider toward the first position; anda second resilient member configured to urge the first and second arms toward the extended and retracted positions, respectively; wherein the leg member further comprises a lock aperture, the lock aperture being engagable by the lock button and the lock tab when the telescoping member is in the elevated position and the inner slider is in the second position; and wherein the telescoping member is inhibited from telescoping movement by simultaneous engagement of the lock button and the lock tab in the lock aperture.

2. The interlock mechanism of claim 1, wherein moving the inner slider toward the first position while the telescoping member is near the raised position disengages the lock tab from the lock aperture, disengagement of the lock tab from the lock aperture enabling a limited releasing movement of the telescoping member.

3. The interlock mechanism of claim 1, further comprising a linkage coordinating movement of a seating panel with movement of the telescoping member, the linkage having a releasing structure configured to engage the lock button and move the first arm toward the retracted position as the telescoping member is moved toward the lowered position.

4. The interlock mechanism of claim 3, wherein the linkage moves generally in a first direction as the telescoping member moves toward the raised position, continuing movement of the linkage in the first direction once the telescoping member reaches the raised position and begins moving toward the lowered position engages a travel stop thereby causing an over-center locking of the linkage which prevents further movement of the linkage in the first direction and retains the telescoping member stationary.

5. The interlock mechanism of claim 1, further comprising an actuator operably connected to move the inner slider between the first and second positions.

6. The interlock mechanism of claim 5, wherein the convertible child support further comprises a seat assembly with a seating panel, movement of the seating panel between a first orientation and a second orientation synchronized with movement of the telescoping member between the raised and lowered positions, the first orientation of the seating panel corresponding to the lowered position of the telescoping member.

7. The interlock mechanism of claim 6, further comprising an accessory for the convertible child support with an insert tab, the accessory configured for installation when the telescoping member is one of the raised position or the lowered position, the accessory insert tab interfacing with the actuator to position the insert tab and move the inner slider toward pre-determined position, the interlock mechanism prevented full engagement of the selected accessory insert tab with the actuator unless the telescoping member is correctly positioned for the accessory.

8. The interlock mechanism of claim 7, wherein the insert tab length for the accessory installable when the telescoping member is in the raised position differs from insert tab length for the accessory installable when the telescoping member is in the lowered position.

9. The interlock mechanism of claim 8, wherein the accessory is a guard rail.

10. The interlock mechanism of claim 8, wherein the accessory is an infant seat.

11. The interlock mechanism of claim 10, wherein the infant seat includes a blocking flange positioned to inhibit movement of the seating panel from the first orientation when the infant seat is installed.

12. An interlock method for managing the configuration of a convertible child comprising:providing a base member having an interior channel configured to telescopically receive a telescoping member, the telescoping member being moveable between raised and lowered positions;providing an inner slider disposed within the telescoping member, the inner slider moveable between generally opposing first and second positions;providing a lock device coupled to the inner slider, the lock device having a first arm and a second arm, each arm hinged to the inner slider and moveable between generally opposing extended and retracted positions, the first arm having a lock button, the second arm having a lock tab; andmoving the telescoping member to the raised position while the inner slider remains in the first position, movement of the telescoping member engaging the lock button in a receptacle on the base member to secure the telescoping member in at least the elevated position.

13. The interlock method of claim 12, further comprising the steps of:providing a seat assembly with a seating panel; providing a seat linkage to coordinate movement of the seating panel between first orientation and a second orientation with movement of the telescoping member between the raised and lowered positions;moving the telescoping member from the lowered position toward the raised position thereby causing wherein the seat linkage to move generally in a first direction;moving the telescoping member toward the lowered position once it reaches the raised position as the seat linkage continues movement in the first direction; providing a travel stop which limits movement of the seat linkage in the first direction, engagement of the seat linkage with the travel stop positioning the telescoping member in a locked position in which over-center locking of the seat linkage prevents further movement of the seat linkage in the first direction thereby preventing further movement of the telescoping member toward the lowered position; and moving the inner slider to the second position, movement thereof moving the lock tab into engagement with the receptacle, engagement of the lock button and the lock tab preventing movement of the telescoping member from the locked position.

14. The interlock method of claim 13, further comprising the steps of:moving the inner slider to the first position thereby disengaging the lock tab from the aperture;moving the telescoping member from the locked position toward the raised position thereby causing the seat linkage to move generally in a second direction opposite from the first direction; andmoving the telescoping member toward the lowered position as the seat linkage continues moving in the second direction, wherein the seat linkage is configured to disengage the lock button and allow continued movement of the extension member toward the lowered position. moving the extension member to the lowered position.

15. The interlock method of claim 14, further comprising the steps of:providing an actuator operably connected to the inner slider;providing a plurality of distinct accessories each selectively connectable to the convertible child support and having an insert tab configured to interface with the actuator; the insert tab for each distinct accessory configured to move the inner slider toward pre-determined position unique to the distinct accessory; andcoupling one of the plurality of distinct accessories to the convertible child support by initiating engagement of the insert tab with the actuator;wherein the interlock mechanism is prevented from full engagement by the insert tab with the actuator unless the extension member is correctly positioned for the designated accessory.

16. The interlock method of claim 13, further comprising the steps of:providing an accessory having a blocking flange;moving the telescoping member to the lowered position; andcoupling the accessory to the convertible child support, wherein the blocking flange prevents movement of the seating panel from the second orientation toward the first orientation.

17. An interlock mechanism for a convertible child support comprising:a leg member having an interior channel configured to telescopically receive an telescoping member, the telescoping member being moveable between raised and lowered positions;a seating panel with a linkage synchronizing movement of the seating panel between a first orientation and a second orientation with movement of the extension member between the raised and lowered positions;an inner slider disposed within the extension member, the inner slider moveable by an actuator between generally opposing first and second positions;a lock device coupled to the inner slider, the lock device having a first arm and a second arm, each arm hinged to the inner slider and moveable between generally opposing extended and retracted positions, the first arm having a lock button, the second arm having a lock tab; a first resilient member coupling the inner slider and the extension member, the first resilient member biasing the inner slider toward the first position; anda second resilient member configured to urge the first and second arms toward the extended and retracted positions, respectively; wherein moving the telescoping member from the lowered position toward the raised position moves the seat linkage generally in a first direction and engages the lock button; wherein moving the telescoping member toward the lowered position once it reaches the raised position continues to move the seat linkage in the first direction to engage a travel stop, engagement thereof by the seat linkage positions the telescoping member in a locked position in which over-center locking of the seat linkage prevents further movement of the seat linkage in the first direction thereby preventing further movement of the telescoping member toward the lowered position; and wherein the lock tab is engaged to prevent telescoping member movement from the locked position.

18. The interlock mechanism of claim 17, wherein moving the inner slider toward the first position while the telescoping member is in the locked position disengages the lock tab from the lock aperture.

19. The interlock mechanism of claim 18, further comprising an accessory for the convertible child support with an insert tab having a length, the accessory configured for installation when the telescoping member is one of the raised position or the lowered position, the insert tab interfacing with the actuator to position the insert tab and move the inner slider toward pre-determined position, the interlock mechanism prevented full engagement of the selected accessory insert tab with the actuator unless the telescoping member is correctly positioned for the accessory.

20. The interlock mechanism of claim 19, wherein the accessory is selected from a group comprising a guard rail used when the telescoping member is in the locked position and an infant seat used when the telescoping member is in the lowered position.

Images