Reclining mechanism for portable reclining chair

Abstract

An actuation mechanism for a portable reclining chair includes a button housing disposed within an arm arranged adjacent an arm plate that is moveable relative to the arm plate. The actuation mechanism further includes a button at least partially disposed within the button housing, at least one spring disposed between the button and a surface of the button housing, and a locking pin. The at least one spring is configured to bias the button away from the surface of the button housing. The actuation mechanism is configured such that movement of the button towards the surface of the button housing causes the locking pin to be retracted from an aperture defined by the arm plate, thereby allowing the portable chair to be reclined.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Application No. 63 / 645,715, filed May 10, 2024, the entirety of which is incorporated by reference herein.TECHNICAL FIELD

[0002] This disclosure generally relates to a mechanism for controlling the recline position of a portable reclining chair.BACKGROUND

[0003] Portable chairs are useful for many activities, such as outdoor camping, sporting events, picnics, concerts, watersports, boating, etc. Many foldable chairs have a fixed backrest position, which can be uncomfortable for some users. Some chairs have a grooved / notched track system that allows users to adjust the backrest, but such designs are often cumbersome, unstable, and hard to use.SUMMARY

[0004] In some aspects, a portable reclining chair includes a foldable base, a seat, a backrest, an arm, an arm plate, and an actuation mechanism. The foldable base includes a first leg element and a second leg element. The arm plate is moveable relative to the arm. The actuation mechanism comprises a button housing attached to the arm and arranged adjacent the arm plate. The portable reclining chair further includes a button at least partially disposed within the button housing. The actuation mechanism is configured to allow the backrest to be reclined relative to the seat when the button is pressed.

[0005] In some aspects, an actuation mechanism for a portable reclining chair includes a button housing disposed within an arm arranged adjacent an arm plate that is moveable relative to the arm. The actuation mechanism further includes a locking pin, a button at least partially disposed within the button housing, and at least one spring that is (i) disposed between the button and a surface of the button housing and (ii) configured to bias the button away from the surface of the button housing. The actuation mechanism is configured such that movement of the button towards the surface of the button housing causes the locking pin to be retracted from an aperture defined by the arm plate, thereby allowing the portable reclining chair to be reclined.

[0006] Embodiments can include one or more of the following features.

[0007] In some embodiments, the actuation mechanism is configured such that the button moves toward a surface of the button housing when the button is pressed.

[0008] In some embodiments, the actuation mechanism further comprises (i) at least one spring disposed between the button and the surface of the button housing and (ii) a locking pin disposed within an aperture defined by the arm plate.

[0009] In some embodiments, the actuation mechanism includes a dowel pin disposed within a slot defined by the button, where the locking pin is coupled to the dowel pin.

[0010] In some embodiments, the at least one spring comprises a plurality of compression springs configured to bias the button away from the surface of the button housing.

[0011] In some embodiments, an upward force is exerted on the locking pin when the button is moved towards the surface of the button housing, and a downward force is exerted on the locking pin when the button is moved away from the surface of the button housing.

[0012] In some embodiments, the locking pin is positioned within a recess formed by the button such that lateral movement of the button does not impede vertical movement of the locking pin.

[0013] In some embodiments, movement of the button towards the surface of the button housing causes the locking pin to be retracted from the aperture defined by the arm plate.

[0014] In some embodiments, retraction of the locking pin from the aperture allows (i) movement of the arm relative to the arm plate and (ii) movement of the backrest relative to the seat.

[0015] In some embodiments, movement of the button towards the surface of the button housing causes a dowel pin to move along a slot defined by the button, which in turn causes the locking pin to be retracted from the aperture defined by the arm plate.

[0016] In some embodiments, movement of the arm relative to the arm plate is restricted when the locking pin is disposed within the aperture defined by the arm plate.

[0017] In some embodiments, the arm plate comprises a plurality of apertures configured to receive a locking pin of the actuation mechanism, the plurality of apertures corresponding to reclining positions of the portable reclining chair.

[0018] In some embodiments, the reclining positions of the portable reclining chair include a first position, a second position, and a third position, where the first position is an upright position, the second position is a relaxed position, and the third position is a reclined position.

[0019] In some embodiments, the portable reclining chair includes an elastic cord connected to the arm plate and to a bottom surface of the arm.

[0020] In some embodiments, a spring force of the elastic cord biases the portable reclining chair towards an upright position when a locking pin of the actuation mechanism is retracted from an aperture defined by the arm plate.

[0021] In some embodiments, the actuation mechanism is configured such that pressing the button retracts the locking pin of the actuation mechanism from the aperture defined by the arm plate.

[0022] In some embodiments, both ends of the elastic cord are secured within notches on a bottom surface of the arm, and a middle section of the elastic cord is held by a member extending from the arm plate.

[0023] In some embodiments, the member extending from the arm plate is a hook or fastener, such as a screw or a bolt coupled to the arm plate.

[0024] In some embodiments, the arm comprises a boss element configured to engage with a slot defined by the arm plate, thereby maintaining alignment of the portable reclining chair as the arm moves relative to the arm plate.

[0025] In some embodiments, the portable reclining chair includes one or more support elements affixed to a bottom surface of the button housing and configured to restrict lateral movement of a locking pin of the actuation mechanism.

[0026] In some embodiments, the portable reclining chair includes a second arm and a second actuation mechanism comprising (i) a second button housing attached to the second arm and (ii) a second button at least partially disposed within the second button housing.

[0027] In some embodiments, the button comprises a first button, and actuation of the first button and the second button allows the backrest to be reclined relative to the seat.

[0028] In some embodiments, the surface of the button housing is an inner surface of the button housing.

[0029] Embodiments can provide one or more of the following advantages.

[0030] The actuation mechanism described herein may improve user experience by allowing users to easily adjust the backrest position of the portable reclining chair with the push of a button. Moreover, because the same actuation mechanism can be used for both arms of the portable reclining chair, the embodiments described herein may result in greater manufacturing efficiency. Furthermore, using a spring-loaded locking pin to control the backrest position of the portable reclining chair may be safer and more reliable than conventional track-based reclining mechanisms. Additionally, using an elastic cord to bias the portable reclining chair to an upright position may reduce the force / effort required to adjust the chair's position.

[0031] The design of the portable reclining chair allows for a user-centric feedback loop. The push button is a visual indicator that captures the user's attention due to its prominent location on the armrest. When the button is pushed and subsequently released in the reclining process, the internal mechanism (e.g., the spring-loaded locking pin) of the chair generates a sound. With the locking pin retracted, the portable reclining chair can seamlessly glide from one position to another. As the locking pin is forced into one of the designated apertures on the arm plate, the user hears a snap or click. This sound provides feedback and assurance that the seat is securely locked in place so the user can confidently rest their weight against the chair.

[0032] The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other aspects, features, and advantages will be apparent from the description, the drawings, and the claims.DESCRIPTION OF DRAWINGS

[0033] FIG. 1 is a perspective view of a portable reclining chair and an actuation mechanism that allows the portable reclining chair to recline.

[0034] FIG. 2A is a perspective view of the actuation mechanism depicted in FIG. 1.

[0035] FIG. 2B is an exploded view of the actuation mechanism depicted in FIG. 1.

[0036] FIG. 3A is a side view of the actuation mechanism depicted in FIG. 1.

[0037] FIG. 3B is a cross-sectional view of the actuation mechanism depicted in FIG. 1.

[0038] FIG. 3C is a top view of the actuation mechanism depicted in FIG. 1.

[0039] FIGS. 4A-4C are side views of the actuation mechanism depicted in FIG. 1, showing the movement of a dowel pin and a locking pin as the actuation mechanism is engaged.

[0040] FIG. 5 is an enlarged view of a portion of an arm of the portable reclining chair depicted in FIG. 1, where some elements of the actuation mechanism are hidden.

[0041] FIG. 6A is a perspective view of an arm of the portable reclining chair depicted in FIG. 1, showing the position of the actuation mechanism relative to an arm plate of the arm.

[0042] FIG. 6B is a top view of the arm plate with various apertures configured to receive the locking pin of the actuation mechanism.

[0043] FIG. 7 is a cross-sectional view of the arm of the portable reclining chair depicted in FIG. 1.

[0044] FIG. 8 is a perspective view of an elastic cord that connects the arm plate depicted in FIG. 6B to an armrest of the arm depicted in FIG. 7.

[0045] FIGS. 9A-9C are perspective views of the portable reclining chair depicted in FIG. 1, showing the relative positions of the arm plate and the armrest for different reclining positions.

[0046] FIGS. 10A-10E are cross-sectional views of the portable reclining chair depicted in FIG. 1, showing the relative position of the locking pin as the armrest moves relative to the arm plate.

[0047] FIGS. 11A-11C are perspective views of an arm plate with a hook that secures the elastic cord to the arm plate.

[0048] FIG. 12 is a perspective view of the arm depicted in FIG. 7, showing the location of the arm relative to the arm plate depicted in FIGS. 11A-11C.

[0049] FIG. 13 is a bottom view of the arm depicted in FIG. 7, showing the relative positions of the locking pin of FIG. 2 and the elastic cord of FIG. 8.

[0050] FIGS. 14 and 15 are perspective views of the arm depicted in FIG. 7, showing how the elastic cord of FIG. 8 is secured within notches on the back surface of the arm.

[0051] Like reference numerals in the drawings indicate like elements.DETAILED DESCRIPTION

[0052] FIG. 1 is a perspective view of a portable reclining chair 100 that includes an actuation mechanism 114 (also referred to as an arm adjustment assembly or a push button mechanism) to allow a backrest 104 of the portable reclining chair 100 to recline relative to a seat 102 of the portable reclining chair 100. The seat 102 and the backrest 104 are made of a woven polyester webbing that supports the user's weight. As depicted in FIG. 1, the portable reclining chair 100 has a foldable frame that includes a front leg element 106-a and a rear leg element 106-b made of aircraft-grade aluminum. The front leg element 106-a and the rear leg element 106-b each include thermoplastic rubber (TPR) elements that provide a non-slip, sticky grip surface to keep the reclining chair 100 securely positioned while in use. These TPR elements also elevate the reclining chair 100 off the ground to protect the bottom surface of the front leg element 106-a and the rear leg element 106-b. To fold the portable reclining chair 100 for storage / transport, the seat 102 and the backrest 104 are brought together, which causes the leg elements 106 to collapse towards each other.

[0053] The portable reclining chair 100 includes a right arm 110-a and a left arm 110-b. The arms 110 are injection molded elements that hinge the chair frame and the leg elements 106 together. The arms 110 are rigidly coupled to the backrest 104. The arms 110 each include an actuation mechanism 114 that, when engaged, allows a user of the portable reclining chair 100 to adjust the position of the backrest 104 relative to the seat 102. As described in greater detail below, the actuation mechanism includes a button 204 (shown in FIG. 2B) that, when pressed, allows an armrest 706 (shown in FIG. 7) to move relative to an arm plate 602 (shown in FIG. 6A), which in turn allows the backrest 104 to move relative to the seat 102.

[0054] Referring to FIGS. 2A and 2B, the actuation mechanism 114 includes a button housing 202 disposed within the arm 110 of the portable reclining chair 100. A button 204 (also referred to as an actuator) is at least partially disposed within the button housing 202. A bottom ledge of the button housing 202 prevents the button 204 from leaving the button housing 202. Two springs 206 are disposed between the button 204 and an inner surface of the button housing 202. The springs 206 are configured to bias the button 204 away from the inner surface of the button housing 202. A lateral surface of the button 204 includes cylindrical protrusions 302 (shown in FIGS. 3A, 3C, 4A, and 4C) that engage with the springs 206. A dowel pin 208 is disposed within a slot 212 defined by the button 204. The dowel pin 208 is coupled to a locking pin 210 that moves up or down as the dowel pin 208 moves along the slot 212. Specifically, the dowel pin 208 is positioned within a bore that passes through a radial surface of the locking pin 210. The actuation mechanism 114 is functionally symmetric, meaning the same actuation mechanism 114 can be used for both the right arm 110-a and the left arm 110-b.

[0055] The recline feature of the portable reclining chair 100 is activated by the actuation mechanism 114, which actuates the locking pin 210 into a fixed arm plate 602 that is fastened to the chair frame. The arm plate 602 is designed with apertures 604 (also referred to as through holes) that capture the spring-loaded locking pin 210. The actuation mechanism 114 is a sub-assembly containing the button housing 202, the button 204, the locking pin 210, springs 206, and hardware to fasten these components together. This sub-assembly is then fastened to an armrest 706 that mates and slides freely on the arm plate 602.

[0056] Referring to FIGS. 3A-3C, the spring-loaded locking pin 210 is positioned within a recess 304 formed by the lateral surface of the button 204, such that lateral movement of the button 204 (towards the inner surface of the button housing 202) does not impede vertical movement of the locking pin 210. When the button 204 is pressed, the springs 206 are compressed by the lateral surface of the button 204 and the inner surface of the button housing 202. As the springs are compressed and the distance between the lateral surface of the button 204 and the inner surface of the button housing 202 decreases, the dowel pin 208 travels up the slot 212. When the button 204 is released, the springs 206 bias the lateral surface of the button 204 away from the inner surface of the button housing 202, causing the dowel pin 208 to travel down the slot 212.

[0057] FIGS. 4A-4C illustrate the relationship between the movement of the dowel pin 208 and the movement of the locking pin 210. In FIG. 4A, the dowel pin 208 is at the bottom of the slot 212. In FIG. 4C, the dowel pin 208 is at the top of the slot 212. When the button is pressed or released, the dowel pin 208 moves along the slot 212 defined by the button 204 (as depicted in FIG. 4B), causing the locking pin 210 to move upwards. Activating the button causes the dowel pin 208 to travel up the slot 212, which exerts an upward force on the locking pin 210. Releasing the button 204 causes the dowel pin 208 to travel down the slot 212, which exerts a downward force on the locking pin 210. The force provided by the user (when the button 204 is pressed) pulls the locking pin 210 up, and the force provided by the springs 206 (when the button 204 is released) pushes the locking pin 210 down.

[0058] Referring to FIG. 5, support elements 502 are positioned on opposite sides of the locking pin 210. The support elements 502, which are affixed to (or part of) the button housing 202, restrict horizontal / lateral movement of the locking pin 210 as it moves up and down. For purposes of illustration, some elements of the actuation mechanism 114 (e.g., the button housing 202 and the button 204) are hidden in FIG. 5.

[0059] FIG. 6A shows a perspective view of an arm 110 of the portable reclining chair 100. Each arm 110 of the portable reclining chair 100 includes an armrest 706 (which includes the actuation mechanism 114) and an arm plate 602 (also referred to as an arm plate or a lower assembly). For purposes of illustration, the armrest 706 is hidden in FIG. 6A. The arm plate 602, which is moveable relative to the armrest 706 and the actuation mechanism 114, connects the front leg element 106-a to the rear leg element 106-b.

[0060] Referring to FIG. 6B, there are three apertures 604 in the surface of the arm plate 602, each corresponding to a different reclining position 902 of the portable reclining chair 100 (as described with reference to FIGS. 9A-9C). When the spring-loaded locking pin 210 is disposed within one of the apertures 604, movement of the arm 110 is restricted. When the button 204 is pressed and the locking pin 210 is retracted, the armrest 706 of the arm 110 can freely slide back and forth along the arm plate 602. In this way, the actuation mechanism 114 can lock the portable reclining chair 100 into multiple different reclined positions (as shown in FIG. 9).

[0061] In the example of FIG. 6B, the arm plate 602 includes an aperture 606 through which a member 804 (e.g., a fastener, screw, or bolt) is threaded. As described with reference to FIG. 8 below, an elastic cord 802 is wrapped around the member 804, which secures the elastic cord 802 to the arm plate 602.

[0062] Referring to FIGS. 7 and 12, a molded boss element 702 is present on both inside walls of the arms 110 of the portable reclining chair 100. The boss element 702 engages with a slot 704 on the arm plate 602, which keeps the frame of the portable reclining chair 100 (e.g., the backrest 104, the seat 102, the arms 110, and the leg elements 106) aligned as the portable reclining chair 100 is folded or adjusted. The boss element 702 slides within the slot 704 as the portable reclining chair 100 is moved between different inclined positions.

[0063] FIG. 8 is a perspective view of the elastic cord (e.g., bungee cord) 802 that connects the arm plate 602 depicted in FIG. 6B to the armrest 706 of the arm 110-b depicted in FIG. 7. FIG. 13 is a bottom view of the elastic cord 802, showing the position of the elastic cord 802 relative to the armrest 706 and the locking pin 210. The elastic cord 802 has two ends that are knotted and secured within notches 1402 (e.g., grooves) in the armrest 706. As depicted in FIGS. 14 and 15, the notches 1402 in the armrest 706 are covered by a panel 1502, which is fastened to the back surface of the armrest 706. The middle section of the elastic cord 802 is held by a member 804 extending from a surface of the arm plate 602. In the example of FIG. 8, the member 804 is a screw positioned within a threaded / tapped hole in the arm plate 602.

[0064] The elastic cord 802 exerts a spring force that pulls the back of the armrest 706 towards the back of the arm plate 602 (and thus biases the backrest 104 toward an upright position). When the locking pin 210 is disposed within one of the apertures defined by the arm plate 602, this spring force is counteracted by a contact force between the locking pin 210 and the arm plate 602. When the locking pin 210 is retracted from the arm plate 602, the spring force biases the portable reclining chair 100 towards an upright position 902-a (as depicted in FIG. 9A). The spring-loaded retraction provided by the elastic cord 802 is a utility improvement that naturally returns the chair 100 upright, which is helpful because the chair 100 is easier to fold while it is in the upright position 902-a.

[0065] The spring force exerted by the elastic cord 802 varies with the distance between the arm plate 602 and the armrest 706. This distance is smallest when the backrest 104 is in the upright position 902-a and greatest when the backrest 104 is in a reclined position 902-c (as depicted in FIG. 9C). Hence, the spring force applied by the elastic cord 802 is smallest (e.g., the tension in the elastic cord 802 is at a minimum) when the portable reclining chair 100 is in the upright position 902-a. Conversely, the spring force applied by the elastic cord 802 is the greatest (e.g., the tension in the elastic cord 802 is at a maximum) when the portable reclining chair 100 is in a reclined position 902-c.

[0066] FIGS. 9A-9C are perspective views of the portable reclining chair 100 depicted in FIG. 1, showing the relative positions of the arm plate 602 and the armrest 706 for different reclining positions 900 of the portable reclining chair 100. When the locking pin 210 is disposed within aperture 604-a (as depicted in FIG. 9A), the backrest 104 remains in an upright position 902-a. In this position, the tension in the elastic cord 802 is at a minimum. When the locking pin 210 is disposed within aperture 604-b (as depicted in FIG. 9B), the backrest 104 remains in a relaxed position 902-b. When the locking pin 210 is disposed within aperture 604-c (as depicted in FIG. 9C), the backrest 104 remains in a reclined position 902-c. In this position, the tension in the elastic cord 802 is at a maximum.

[0067] To recline the chair 100, the user presses the button 204 of the actuation mechanism 114 to retract the locking pin 210 from one of the apertures 604 in the arm plate 602, and then applies pressure to the backrest 104 (e.g., by leaning back), which in turn causes the backrest 104 to recline relative to the seat 102 and causes the armrest 706 (including the actuation mechanism 114) to slide rearwardly relative to the arm plate 602.

[0068] FIGS. 10A-10E are exploded cross-sectional views of the portable reclining chair 100 depicted in FIG. 1, showing the relative position of the locking pin 210 as the armrest 706 moves relative to the arm plate 602 of the arm 110-b. In FIG. 10A, the portable reclining chair 100 is in an upright position 902-a, and the locking pin 210 is disposed within the aperture 604-a. To move the portable reclining chair 100 to a reclined position, the user presses the button 204 of the actuation mechanism 114 and applies a rearward force to the seat back 104. As a result, the locking pin 210 is retracted from the aperture 604-a in the arm plate 602 (as shown in FIG. 10B) and slides rearwardly along a top surface of the arm plate 602, allowing the portable reclining chair 100 to move from the upright position 902-a toward a relaxed position 902-b. Assuming the user has released the button 402, when the portable reclining chair 100 reaches the relaxed position 902-b shown in FIG. 10C, the locking pin 210 automatically extends into the aperture 604-b (due to the downward spring force applied to the locking pin 210), thereby locking the portable reclining chair 100 in the relaxed position 902-b. To move the chair to a further reclined position, the user once again presses the button 204 of the actuation mechanism 114 and applies a rearward force to the seat back 104. As shown in FIG. 10D, the locking pin 210 then retracts from the aperture 604-b in the arm plate 602 and slides along the upper surface of the arm plate 602 as the user moves the portable reclining chair 100 from the relaxed position 902-b toward a reclined position 902-c. Assuming the user has released the button 402, when the portable reclining chair 100 reaches the reclined position 902-c shown in FIG. 10E, the locking pin 210 automatically extends into the aperture 604-c to lock the portable reclining chair 100 in the reclined position 902-c.

[0069] Referring again to FIG. 10A, the portable reclining chair 100 begins in the upright position 902-a. In this position, tension in the elastic cord 802 is at a minimum. At rest, the force applied by the springs 206 pushes the button 204 away from the button housing 202, which keeps the locking pin 210 positioned within the aperture 604-a. To adjust the recline position of the portable reclining chair 100, the actuation mechanism 114 is engaged (e.g., the button 204 is pressed), which counteracts the force applied by the springs 206. As the button 204 moves towards the inner surface of the button housing 202, the dowel pin 208 moves along the slot 212 defined by the button 204, and the locking pin 210 is retracted from the aperture 604-a.

[0070] Once the locking pin 210 is fully retracted from the arm plate 602, the armrest 706 is free to move with respect to the arm plate 602. As described with reference to FIG. 8, the spring force of the elastic cord 802 biases the portable reclining chair 100 towards the upright position 902-a. To counteract the spring force of the elastic cord 802, the user leans their weight against the backrest 104, causing the backrest 104 (and the armrest 706) to move relative to the arm plate 602. As the armrest 706 glides (e.g., moves) along the arm plate 602, the boss element 702 slides along the slot 704 on the arm plate 602, keeping the frame of the portable reclining chair 100 in alignment.

[0071] When the button 204 is released and the locking pin 210 is not positioned over one of the apertures 604 (as depicted in FIG. 10B), the surface of the arm plate 602 exerts an upward force on the locking pin 210, which counteracts the downward force of the springs 206. As a result, the button 204 remains activated (e.g., the locking pin 210 stays retracted and the dowel pin 208 remains at the top of the slot 212). Once the locking pin 210 reaches the aperture 604-b, the springs 206 push the button 204 away from the inner surface of the button housing 202, and the locking pin 210 is forced into the aperture 604-b.

[0072] With the locking pin 210 securely disposed within the aperture 604-b, the backrest 104 remains in the relaxed position 902-b (as depicted in FIG. 10C). To adjust the recline position of the portable reclining chair 100, the actuation mechanism 114 is re-engaged (e.g., the button 204 is pressed again), which counteracts the force applied by the springs 206. As the button 204 moves towards the inner surface of the button housing 202, the dowel pin 208 moves along the slot 212 defined by the button 204, and the locking pin 210 is retracted from the aperture 604-b.

[0073] Once the locking pin 210 is fully retracted from the arm plate 602, the armrest 706 is free to move with respect to the arm plate 602. With the locking pin 210 retracted, the spring force of the elastic cord 802 biases the portable reclining chair 100 towards the upright position 902-a. To counteract the spring force of the elastic cord 802, the user leans their weight against the backrest 104, causing the backrest 104 (and the armrest 706) to move relative to the arm plate 602. As the armrest 706 moves along the arm plate 602, the boss element 702 slides along the slot 704 on the arm plate 602, keeping the frame of the portable reclining chair 100 in alignment.

[0074] When the button 204 is released and the locking pin 210 is not positioned over one of the apertures 604 (as depicted in FIG. 10D), the surface of the arm plate 602 exerts an upward force on the locking pin 210, which counteracts the downward force of the springs 206. As a result, the button 204 remains activated and the springs 206 remain compressed. Once the locking pin 210 reaches the aperture 604-c, the springs 206 push the button 204 away from the inner surface of the button housing 202, and the locking pin 210 travels downward into the aperture 604-c. With the locking pin 210 securely disposed within the aperture 604-c, the backrest 104 remains in the reclined position 902-c (as depicted in FIG. 10E). In this position, tension in the elastic cord 802 is at a maximum.

[0075] To return the backrest 104 to the upright position 902-a (or the relaxed position 902-b), the user can simply press the button 402 without applying any force to the backrest 104. Due to the tension in the elastic cord 802, the backrest 104 is automatically pulled towards the upright position 902-a. As the portable reclining chair 100 moves towards the upright position 902-a, the tension in the elastic cord 802 is reduced.

[0076] The devices and mechanisms described above are examples of the innovative aspects disclosed herein. However, other embodiments and alternatives, including those listed below, are also within the scope of the present disclosure.

[0077] While the arm plate 602 is described as having three apertures 604, the arm plate 602 can have fewer than three apertures 604 or more than three apertures 604 positioned along the arm plate 602.

[0078] While the button 204 is described as having a dowel pin 208 that restricts movement of the arm 110 relative to the arm plate 602, other mechanisms are contemplated within the scope of the present disclosure. For example, at rest, a pressurized or compressed vessel housed within the arm 110 of the portable reclining chair 100 may compress the arm 110 and the arm plate 602 together, thereby restricting movement of the arm 110 relative to the arm plate 602. When the button 204 is pressed, a surface of the button 204 may counteract the force exerted by the pressurized / compressed vessel, allowing the arm 110 to move freely along the arm plate 602.

[0079] In some implementations, additional components can be snapped or clipped onto the frame of the portable reclining chair 100. For example, a detachable leg rest and / or cupholder can be attached to the front leg element 106-a, or a sunshade accessory can be clipped onto the backrest 104. The arm plate 602 may have additional or alternative apertures 604 to support such customization.

[0080] In the foregoing description, the arm plate 602 is connected to the armrest 706 by an elastic cord 802. However, in other embodiments, an extension spring (e.g., a metal extension spring), piston mechanism, or rubber band can be used to bias the portable reclining chair 100 to an upright position 902-a. Also, while the elastic cord 802 is described as a single strand with two ends, the elastic cord 802 may alternatively be implemented as a continuous loop with no ends. In some implementations, rather than having both ends of the elastic cord 802 secured to the bottom surface of the armrest 706 (as shown in FIG. 8), one end of the elastic cord 802 may be secured to the arm plate 602 and the other end may be secured to the armrest 706.

[0081] Furthermore, while the elastic cord 802 is depicted in FIG. 8 as being wrapped around a fastener (e.g., a screw or bolt) attached to the arm plate 602, other types of structures can alternatively or additionally be used to hold the elastic cord 802. As shown in FIGS. 11A-11C, for example, an arm plate 1102 includes a hook 1108 around which the elastic cord 802 can be secured. The hook 1108 serves to maintain tension in the elastic cord 802 as the arm plate 1102 is moved relative to the armrest 706. The hook 1108 can be formed using various techniques, such as bending, stamping, molding, machining, etc. Apart from the hook 1108, the arm plate 1102 can be structurally and functionally equivalent to the arm plate 602 described above.

[0082] While the hook 1108 illustrated in FIGS. 11A-11C is integral with the arm plate 1102, in other cases the hook 1108 can be part of an insert that is attached to (e.g., snapped onto) the arm plate 1102.

[0083] In some embodiments, the armrest 706 may include a corresponding hook 1108 or member 804 that secures the elastic cord 802 to the armrest 706.

[0084] Other mechanisms for securing the elastic cord 802 to the arm plate and the armrest are also possible.

[0085] While the boss element 702 is described as a molded feature that engages with the slot 704 in the arm plate 602, in some implementations the boss element 702 is an etched feature or a clip-on component. Alternatively, the boss element 702 can be located on the arm plate 602, and the slot 704 can be located on the armrest 706.

[0086] While the actuation mechanism 114 is depicted as having two compression springs that bias the button 204 away from the button housing 202, the actuation mechanism 114 may include fewer than two springs 206 (e.g., one central spring) or more than two springs 206. Also, while the protrusions 302 depicted on the lateral surface of the button 204 are cylindrical, in other implementations the protrusions 302 may have a rectangular or elliptical cross-section. Alternatively, the button 204 may be devoid of protrusions 302, and the springs 206 may reside within an indent or recess in the lateral surface of the button 204.

[0087] In the foregoing description, the button 204 is located on the side of the arm 110-b. In other implementations, however, the button 204 is positioned on the top of the armrest 706. In such cases, a torsional spring can be used to bias the button 204 away from a bottom surface of the button housing 202.

[0088] In some implementations, each arm 110 of the portable reclining chair 100 has a respective actuation mechanism 114, such that the reclining position of the backrest 104 can be adjusted by simultaneously pressing one button 204 on the right arm 110-a and another button 204 on the left arm 110-b. In other implementations, only one arm 110 has an actuation mechanism, in which case the reclining position of the backrest 104 can be adjusted with a single button 204.

[0089] While the arms 110 of the portable reclining chair 100 are described as being injection molded, in some implementations one or both of the arms 110 may be compression molded, blow molded, 3D printed, casted, or manufactured using a computer numerical control (CNC) machine.

[0090] While the backrest 104 and the seat 102 of the portable reclining chair 100 are described as being made of polyester webbing, other materials (such as nylon mesh fabric) can also be used. Likewise, while the frame and leg elements 106 of the portable reclining chair 100 are described as being made of aluminum, other materials (such as plastic, polyvinyl chloride, or other synthetic resins) can be used.

[0091] A number of embodiments have been described. Nevertheless, it is understood that various modifications can be made without departing from the spirit and scope of the present disclosure. Accordingly, other embodiments are within the scope of the following claims.

Examples

Embodiment Construction

[0052]FIG. 1 is a perspective view of a portable reclining chair 100 that includes an actuation mechanism 114 (also referred to as an arm adjustment assembly or a push button mechanism) to allow a backrest 104 of the portable reclining chair 100 to recline relative to a seat 102 of the portable reclining chair 100. The seat 102 and the backrest 104 are made of a woven polyester webbing that supports the user's weight. As depicted in FIG. 1, the portable reclining chair 100 has a foldable frame that includes a front leg element 106-a and a rear leg element 106-b made of aircraft-grade aluminum. The front leg element 106-a and the rear leg element 106-b each include thermoplastic rubber (TPR) elements that provide a non-slip, sticky grip surface to keep the reclining chair 100 securely positioned while in use. These TPR elements also elevate the reclining chair 100 off the ground to protect the bottom surface of the front leg element 106-a and the rear leg element 106-b. To fold the p...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Provisional Application No. 63 / 645,715, filed May 10, 2024, the entirety of which is incorporated by reference herein.TECHNICAL FIELD

[0002] This disclosure generally relates to a mechanism for controlling the recline position of a portable reclining chair.BACKGROUND

[0003] Portable chairs are useful for many activities, such as outdoor camping, sporting events, picnics, concerts, watersports, boating, etc. Many foldable chairs have a fixed backrest position, which can be uncomfortable for some users. Some chairs have a grooved / notched track system that allows users to adjust the backrest, but such designs are often cumbersome, unstable, and hard to use.SUMMARY

[0004] In some aspects, a portable reclining chair includes a foldable base, a seat, a backrest, an arm, an arm plate, and an actuation mechanism. The foldable base includes a first leg element and a second leg element. The arm plate is moveable relative to the arm. The actuation mechanism comprises a button housing attached to the arm and arranged adjacent the arm plate. The portable reclining chair further includes a button at least partially disposed within the button housing. The actuation mechanism is configured to allow the backrest to be reclined relative to the seat when the button is pressed.

[0005] In some aspects, an actuation mechanism for a portable reclining chair includes a button housing disposed within an arm arranged adjacent an arm plate that is moveable relative to the arm. The actuation mechanism further includes a locking pin, a button at least partially disposed within the button housing, and at least one spring that is (i) disposed between the button and a surface of the button housing and (ii) configured to bias the button away from the surface of the button housing. The actuation mechanism is configured such that movement of the button towards the surface of the button housing causes the locking pin to be retracted from an aperture defined by the arm plate, thereby allowing the portable reclining chair to be reclined.

[0006] Embodiments can include one or more of the following features.

[0007] In some embodiments, the actuation mechanism is configured such that the button moves toward a surface of the button housing when the button is pressed.

[0008] In some embodiments, the actuation mechanism further comprises (i) at least one spring disposed between the button and the surface of the button housing and (ii) a locking pin disposed within an aperture defined by the arm plate.

[0009] In some embodiments, the actuation mechanism includes a dowel pin disposed within a slot defined by the button, where the locking pin is coupled to the dowel pin.

[0010] In some embodiments, the at least one spring comprises a plurality of compression springs configured to bias the button away from the surface of the button housing.

[0011] In some embodiments, an upward force is exerted on the locking pin when the button is moved towards the surface of the button housing, and a downward force is exerted on the locking pin when the button is moved away from the surface of the button housing.

[0012] In some embodiments, the locking pin is positioned within a recess formed by the button such that lateral movement of the button does not impede vertical movement of the locking pin.

[0013] In some embodiments, movement of the button towards the surface of the button housing causes the locking pin to be retracted from the aperture defined by the arm plate.

[0014] In some embodiments, retraction of the locking pin from the aperture allows (i) movement of the arm relative to the arm plate and (ii) movement of the backrest relative to the seat.

[0015] In some embodiments, movement of the button towards the surface of the button housing causes a dowel pin to move along a slot defined by the button, which in turn causes the locking pin to be retracted from the aperture defined by the arm plate.

[0016] In some embodiments, movement of the arm relative to the arm plate is restricted when the locking pin is disposed within the aperture defined by the arm plate.

[0017] In some embodiments, the arm plate comprises a plurality of apertures configured to receive a locking pin of the actuation mechanism, the plurality of apertures corresponding to reclining positions of the portable reclining chair.

[0018] In some embodiments, the reclining positions of the portable reclining chair include a first position, a second position, and a third position, where the first position is an upright position, the second position is a relaxed position, and the third position is a reclined position.

[0019] In some embodiments, the portable reclining chair includes an elastic cord connected to the arm plate and to a bottom surface of the arm.

[0020] In some embodiments, a spring force of the elastic cord biases the portable reclining chair towards an upright position when a locking pin of the actuation mechanism is retracted from an aperture defined by the arm plate.

[0021] In some embodiments, the actuation mechanism is configured such that pressing the button retracts the locking pin of the actuation mechanism from the aperture defined by the arm plate.

[0022] In some embodiments, both ends of the elastic cord are secured within notches on a bottom surface of the arm, and a middle section of the elastic cord is held by a member extending from the arm plate.

[0023] In some embodiments, the member extending from the arm plate is a hook or fastener, such as a screw or a bolt coupled to the arm plate.

[0024] In some embodiments, the arm comprises a boss element configured to engage with a slot defined by the arm plate, thereby maintaining alignment of the portable reclining chair as the arm moves relative to the arm plate.

[0025] In some embodiments, the portable reclining chair includes one or more support elements affixed to a bottom surface of the button housing and configured to restrict lateral movement of a locking pin of the actuation mechanism.

[0026] In some embodiments, the portable reclining chair includes a second arm and a second actuation mechanism comprising (i) a second button housing attached to the second arm and (ii) a second button at least partially disposed within the second button housing.

[0027] In some embodiments, the button comprises a first button, and actuation of the first button and the second button allows the backrest to be reclined relative to the seat.

[0028] In some embodiments, the surface of the button housing is an inner surface of the button housing.

[0029] Embodiments can provide one or more of the following advantages.

[0030] The actuation mechanism described herein may improve user experience by allowing users to easily adjust the backrest position of the portable reclining chair with the push of a button. Moreover, because the same actuation mechanism can be used for both arms of the portable reclining chair, the embodiments described herein may result in greater manufacturing efficiency. Furthermore, using a spring-loaded locking pin to control the backrest position of the portable reclining chair may be safer and more reliable than conventional track-based reclining mechanisms. Additionally, using an elastic cord to bias the portable reclining chair to an upright position may reduce the force / effort required to adjust the chair's position.

[0031] The design of the portable reclining chair allows for a user-centric feedback loop. The push button is a visual indicator that captures the user's attention due to its prominent location on the armrest. When the button is pushed and subsequently released in the reclining process, the internal mechanism (e.g., the spring-loaded locking pin) of the chair generates a sound. With the locking pin retracted, the portable reclining chair can seamlessly glide from one position to another. As the locking pin is forced into one of the designated apertures on the arm plate, the user hears a snap or click. This sound provides feedback and assurance that the seat is securely locked in place so the user can confidently rest their weight against the chair.

[0032] The details of one or more embodiments are set forth in the accompanying drawings and the description below. Other aspects, features, and advantages will be apparent from the description, the drawings, and the claims.DESCRIPTION OF DRAWINGS

[0033] FIG. 1 is a perspective view of a portable reclining chair and an actuation mechanism that allows the portable reclining chair to recline.

[0034] FIG. 2A is a perspective view of the actuation mechanism depicted in FIG. 1.

[0035] FIG. 2B is an exploded view of the actuation mechanism depicted in FIG. 1.

[0036] FIG. 3A is a side view of the actuation mechanism depicted in FIG. 1.

[0037] FIG. 3B is a cross-sectional view of the actuation mechanism depicted in FIG. 1.

[0038] FIG. 3C is a top view of the actuation mechanism depicted in FIG. 1.

[0039] FIGS. 4A-4C are side views of the actuation mechanism depicted in FIG. 1, showing the movement of a dowel pin and a locking pin as the actuation mechanism is engaged.

[0040] FIG. 5 is an enlarged view of a portion of an arm of the portable reclining chair depicted in FIG. 1, where some elements of the actuation mechanism are hidden.

[0041] FIG. 6A is a perspective view of an arm of the portable reclining chair depicted in FIG. 1, showing the position of the actuation mechanism relative to an arm plate of the arm.

[0042] FIG. 6B is a top view of the arm plate with various apertures configured to receive the locking pin of the actuation mechanism.

[0043] FIG. 7 is a cross-sectional view of the arm of the portable reclining chair depicted in FIG. 1.

[0044] FIG. 8 is a perspective view of an elastic cord that connects the arm plate depicted in FIG. 6B to an armrest of the arm depicted in FIG. 7.

[0045] FIGS. 9A-9C are perspective views of the portable reclining chair depicted in FIG. 1, showing the relative positions of the arm plate and the armrest for different reclining positions.

[0046] FIGS. 10A-10E are cross-sectional views of the portable reclining chair depicted in FIG. 1, showing the relative position of the locking pin as the armrest moves relative to the arm plate.

[0047] FIGS. 11A-11C are perspective views of an arm plate with a hook that secures the elastic cord to the arm plate.

[0048] FIG. 12 is a perspective view of the arm depicted in FIG. 7, showing the location of the arm relative to the arm plate depicted in FIGS. 11A-11C.

[0049] FIG. 13 is a bottom view of the arm depicted in FIG. 7, showing the relative positions of the locking pin of FIG. 2 and the elastic cord of FIG. 8.

[0050] FIGS. 14 and 15 are perspective views of the arm depicted in FIG. 7, showing how the elastic cord of FIG. 8 is secured within notches on the back surface of the arm.

[0051] Like reference numerals in the drawings indicate like elements.DETAILED DESCRIPTION

[0052] FIG. 1 is a perspective view of a portable reclining chair 100 that includes an actuation mechanism 114 (also referred to as an arm adjustment assembly or a push button mechanism) to allow a backrest 104 of the portable reclining chair 100 to recline relative to a seat 102 of the portable reclining chair 100. The seat 102 and the backrest 104 are made of a woven polyester webbing that supports the user's weight. As depicted in FIG. 1, the portable reclining chair 100 has a foldable frame that includes a front leg element 106-a and a rear leg element 106-b made of aircraft-grade aluminum. The front leg element 106-a and the rear leg element 106-b each include thermoplastic rubber (TPR) elements that provide a non-slip, sticky grip surface to keep the reclining chair 100 securely positioned while in use. These TPR elements also elevate the reclining chair 100 off the ground to protect the bottom surface of the front leg element 106-a and the rear leg element 106-b. To fold the portable reclining chair 100 for storage / transport, the seat 102 and the backrest 104 are brought together, which causes the leg elements 106 to collapse towards each other.

[0053] The portable reclining chair 100 includes a right arm 110-a and a left arm 110-b. The arms 110 are injection molded elements that hinge the chair frame and the leg elements 106 together. The arms 110 are rigidly coupled to the backrest 104. The arms 110 each include an actuation mechanism 114 that, when engaged, allows a user of the portable reclining chair 100 to adjust the position of the backrest 104 relative to the seat 102. As described in greater detail below, the actuation mechanism includes a button 204 (shown in FIG. 2B) that, when pressed, allows an armrest 706 (shown in FIG. 7) to move relative to an arm plate 602 (shown in FIG. 6A), which in turn allows the backrest 104 to move relative to the seat 102.

[0054] Referring to FIGS. 2A and 2B, the actuation mechanism 114 includes a button housing 202 disposed within the arm 110 of the portable reclining chair 100. A button 204 (also referred to as an actuator) is at least partially disposed within the button housing 202. A bottom ledge of the button housing 202 prevents the button 204 from leaving the button housing 202. Two springs 206 are disposed between the button 204 and an inner surface of the button housing 202. The springs 206 are configured to bias the button 204 away from the inner surface of the button housing 202. A lateral surface of the button 204 includes cylindrical protrusions 302 (shown in FIGS. 3A, 3C, 4A, and 4C) that engage with the springs 206. A dowel pin 208 is disposed within a slot 212 defined by the button 204. The dowel pin 208 is coupled to a locking pin 210 that moves up or down as the dowel pin 208 moves along the slot 212. Specifically, the dowel pin 208 is positioned within a bore that passes through a radial surface of the locking pin 210. The actuation mechanism 114 is functionally symmetric, meaning the same actuation mechanism 114 can be used for both the right arm 110-a and the left arm 110-b.

[0055] The recline feature of the portable reclining chair 100 is activated by the actuation mechanism 114, which actuates the locking pin 210 into a fixed arm plate 602 that is fastened to the chair frame. The arm plate 602 is designed with apertures 604 (also referred to as through holes) that capture the spring-loaded locking pin 210. The actuation mechanism 114 is a sub-assembly containing the button housing 202, the button 204, the locking pin 210, springs 206, and hardware to fasten these components together. This sub-assembly is then fastened to an armrest 706 that mates and slides freely on the arm plate 602.

[0056] Referring to FIGS. 3A-3C, the spring-loaded locking pin 210 is positioned within a recess 304 formed by the lateral surface of the button 204, such that lateral movement of the button 204 (towards the inner surface of the button housing 202) does not impede vertical movement of the locking pin 210. When the button 204 is pressed, the springs 206 are compressed by the lateral surface of the button 204 and the inner surface of the button housing 202. As the springs are compressed and the distance between the lateral surface of the button 204 and the inner surface of the button housing 202 decreases, the dowel pin 208 travels up the slot 212. When the button 204 is released, the springs 206 bias the lateral surface of the button 204 away from the inner surface of the button housing 202, causing the dowel pin 208 to travel down the slot 212.

[0057] FIGS. 4A-4C illustrate the relationship between the movement of the dowel pin 208 and the movement of the locking pin 210. In FIG. 4A, the dowel pin 208 is at the bottom of the slot 212. In FIG. 4C, the dowel pin 208 is at the top of the slot 212. When the button is pressed or released, the dowel pin 208 moves along the slot 212 defined by the button 204 (as depicted in FIG. 4B), causing the locking pin 210 to move upwards. Activating the button causes the dowel pin 208 to travel up the slot 212, which exerts an upward force on the locking pin 210. Releasing the button 204 causes the dowel pin 208 to travel down the slot 212, which exerts a downward force on the locking pin 210. The force provided by the user (when the button 204 is pressed) pulls the locking pin 210 up, and the force provided by the springs 206 (when the button 204 is released) pushes the locking pin 210 down.

[0058] Referring to FIG. 5, support elements 502 are positioned on opposite sides of the locking pin 210. The support elements 502, which are affixed to (or part of) the button housing 202, restrict horizontal / lateral movement of the locking pin 210 as it moves up and down. For purposes of illustration, some elements of the actuation mechanism 114 (e.g., the button housing 202 and the button 204) are hidden in FIG. 5.

[0059] FIG. 6A shows a perspective view of an arm 110 of the portable reclining chair 100. Each arm 110 of the portable reclining chair 100 includes an armrest 706 (which includes the actuation mechanism 114) and an arm plate 602 (also referred to as an arm plate or a lower assembly). For purposes of illustration, the armrest 706 is hidden in FIG. 6A. The arm plate 602, which is moveable relative to the armrest 706 and the actuation mechanism 114, connects the front leg element 106-a to the rear leg element 106-b.

[0060] Referring to FIG. 6B, there are three apertures 604 in the surface of the arm plate 602, each corresponding to a different reclining position 902 of the portable reclining chair 100 (as described with reference to FIGS. 9A-9C). When the spring-loaded locking pin 210 is disposed within one of the apertures 604, movement of the arm 110 is restricted. When the button 204 is pressed and the locking pin 210 is retracted, the armrest 706 of the arm 110 can freely slide back and forth along the arm plate 602. In this way, the actuation mechanism 114 can lock the portable reclining chair 100 into multiple different reclined positions (as shown in FIG. 9).

[0061] In the example of FIG. 6B, the arm plate 602 includes an aperture 606 through which a member 804 (e.g., a fastener, screw, or bolt) is threaded. As described with reference to FIG. 8 below, an elastic cord 802 is wrapped around the member 804, which secures the elastic cord 802 to the arm plate 602.

[0062] Referring to FIGS. 7 and 12, a molded boss element 702 is present on both inside walls of the arms 110 of the portable reclining chair 100. The boss element 702 engages with a slot 704 on the arm plate 602, which keeps the frame of the portable reclining chair 100 (e.g., the backrest 104, the seat 102, the arms 110, and the leg elements 106) aligned as the portable reclining chair 100 is folded or adjusted. The boss element 702 slides within the slot 704 as the portable reclining chair 100 is moved between different inclined positions.

[0063] FIG. 8 is a perspective view of the elastic cord (e.g., bungee cord) 802 that connects the arm plate 602 depicted in FIG. 6B to the armrest 706 of the arm 110-b depicted in FIG. 7. FIG. 13 is a bottom view of the elastic cord 802, showing the position of the elastic cord 802 relative to the armrest 706 and the locking pin 210. The elastic cord 802 has two ends that are knotted and secured within notches 1402 (e.g., grooves) in the armrest 706. As depicted in FIGS. 14 and 15, the notches 1402 in the armrest 706 are covered by a panel 1502, which is fastened to the back surface of the armrest 706. The middle section of the elastic cord 802 is held by a member 804 extending from a surface of the arm plate 602. In the example of FIG. 8, the member 804 is a screw positioned within a threaded / tapped hole in the arm plate 602.

[0064] The elastic cord 802 exerts a spring force that pulls the back of the armrest 706 towards the back of the arm plate 602 (and thus biases the backrest 104 toward an upright position). When the locking pin 210 is disposed within one of the apertures defined by the arm plate 602, this spring force is counteracted by a contact force between the locking pin 210 and the arm plate 602. When the locking pin 210 is retracted from the arm plate 602, the spring force biases the portable reclining chair 100 towards an upright position 902-a (as depicted in FIG. 9A). The spring-loaded retraction provided by the elastic cord 802 is a utility improvement that naturally returns the chair 100 upright, which is helpful because the chair 100 is easier to fold while it is in the upright position 902-a.

[0065] The spring force exerted by the elastic cord 802 varies with the distance between the arm plate 602 and the armrest 706. This distance is smallest when the backrest 104 is in the upright position 902-a and greatest when the backrest 104 is in a reclined position 902-c (as depicted in FIG. 9C). Hence, the spring force applied by the elastic cord 802 is smallest (e.g., the tension in the elastic cord 802 is at a minimum) when the portable reclining chair 100 is in the upright position 902-a. Conversely, the spring force applied by the elastic cord 802 is the greatest (e.g., the tension in the elastic cord 802 is at a maximum) when the portable reclining chair 100 is in a reclined position 902-c.

[0066] FIGS. 9A-9C are perspective views of the portable reclining chair 100 depicted in FIG. 1, showing the relative positions of the arm plate 602 and the armrest 706 for different reclining positions 900 of the portable reclining chair 100. When the locking pin 210 is disposed within aperture 604-a (as depicted in FIG. 9A), the backrest 104 remains in an upright position 902-a. In this position, the tension in the elastic cord 802 is at a minimum. When the locking pin 210 is disposed within aperture 604-b (as depicted in FIG. 9B), the backrest 104 remains in a relaxed position 902-b. When the locking pin 210 is disposed within aperture 604-c (as depicted in FIG. 9C), the backrest 104 remains in a reclined position 902-c. In this position, the tension in the elastic cord 802 is at a maximum.

[0067] To recline the chair 100, the user presses the button 204 of the actuation mechanism 114 to retract the locking pin 210 from one of the apertures 604 in the arm plate 602, and then applies pressure to the backrest 104 (e.g., by leaning back), which in turn causes the backrest 104 to recline relative to the seat 102 and causes the armrest 706 (including the actuation mechanism 114) to slide rearwardly relative to the arm plate 602.

[0068] FIGS. 10A-10E are exploded cross-sectional views of the portable reclining chair 100 depicted in FIG. 1, showing the relative position of the locking pin 210 as the armrest 706 moves relative to the arm plate 602 of the arm 110-b. In FIG. 10A, the portable reclining chair 100 is in an upright position 902-a, and the locking pin 210 is disposed within the aperture 604-a. To move the portable reclining chair 100 to a reclined position, the user presses the button 204 of the actuation mechanism 114 and applies a rearward force to the seat back 104. As a result, the locking pin 210 is retracted from the aperture 604-a in the arm plate 602 (as shown in FIG. 10B) and slides rearwardly along a top surface of the arm plate 602, allowing the portable reclining chair 100 to move from the upright position 902-a toward a relaxed position 902-b. Assuming the user has released the button 402, when the portable reclining chair 100 reaches the relaxed position 902-b shown in FIG. 10C, the locking pin 210 automatically extends into the aperture 604-b (due to the downward spring force applied to the locking pin 210), thereby locking the portable reclining chair 100 in the relaxed position 902-b. To move the chair to a further reclined position, the user once again presses the button 204 of the actuation mechanism 114 and applies a rearward force to the seat back 104. As shown in FIG. 10D, the locking pin 210 then retracts from the aperture 604-b in the arm plate 602 and slides along the upper surface of the arm plate 602 as the user moves the portable reclining chair 100 from the relaxed position 902-b toward a reclined position 902-c. Assuming the user has released the button 402, when the portable reclining chair 100 reaches the reclined position 902-c shown in FIG. 10E, the locking pin 210 automatically extends into the aperture 604-c to lock the portable reclining chair 100 in the reclined position 902-c.

[0069] Referring again to FIG. 10A, the portable reclining chair 100 begins in the upright position 902-a. In this position, tension in the elastic cord 802 is at a minimum. At rest, the force applied by the springs 206 pushes the button 204 away from the button housing 202, which keeps the locking pin 210 positioned within the aperture 604-a. To adjust the recline position of the portable reclining chair 100, the actuation mechanism 114 is engaged (e.g., the button 204 is pressed), which counteracts the force applied by the springs 206. As the button 204 moves towards the inner surface of the button housing 202, the dowel pin 208 moves along the slot 212 defined by the button 204, and the locking pin 210 is retracted from the aperture 604-a.

[0070] Once the locking pin 210 is fully retracted from the arm plate 602, the armrest 706 is free to move with respect to the arm plate 602. As described with reference to FIG. 8, the spring force of the elastic cord 802 biases the portable reclining chair 100 towards the upright position 902-a. To counteract the spring force of the elastic cord 802, the user leans their weight against the backrest 104, causing the backrest 104 (and the armrest 706) to move relative to the arm plate 602. As the armrest 706 glides (e.g., moves) along the arm plate 602, the boss element 702 slides along the slot 704 on the arm plate 602, keeping the frame of the portable reclining chair 100 in alignment.

[0071] When the button 204 is released and the locking pin 210 is not positioned over one of the apertures 604 (as depicted in FIG. 10B), the surface of the arm plate 602 exerts an upward force on the locking pin 210, which counteracts the downward force of the springs 206. As a result, the button 204 remains activated (e.g., the locking pin 210 stays retracted and the dowel pin 208 remains at the top of the slot 212). Once the locking pin 210 reaches the aperture 604-b, the springs 206 push the button 204 away from the inner surface of the button housing 202, and the locking pin 210 is forced into the aperture 604-b.

[0072] With the locking pin 210 securely disposed within the aperture 604-b, the backrest 104 remains in the relaxed position 902-b (as depicted in FIG. 10C). To adjust the recline position of the portable reclining chair 100, the actuation mechanism 114 is re-engaged (e.g., the button 204 is pressed again), which counteracts the force applied by the springs 206. As the button 204 moves towards the inner surface of the button housing 202, the dowel pin 208 moves along the slot 212 defined by the button 204, and the locking pin 210 is retracted from the aperture 604-b.

[0073] Once the locking pin 210 is fully retracted from the arm plate 602, the armrest 706 is free to move with respect to the arm plate 602. With the locking pin 210 retracted, the spring force of the elastic cord 802 biases the portable reclining chair 100 towards the upright position 902-a. To counteract the spring force of the elastic cord 802, the user leans their weight against the backrest 104, causing the backrest 104 (and the armrest 706) to move relative to the arm plate 602. As the armrest 706 moves along the arm plate 602, the boss element 702 slides along the slot 704 on the arm plate 602, keeping the frame of the portable reclining chair 100 in alignment.

[0074] When the button 204 is released and the locking pin 210 is not positioned over one of the apertures 604 (as depicted in FIG. 10D), the surface of the arm plate 602 exerts an upward force on the locking pin 210, which counteracts the downward force of the springs 206. As a result, the button 204 remains activated and the springs 206 remain compressed. Once the locking pin 210 reaches the aperture 604-c, the springs 206 push the button 204 away from the inner surface of the button housing 202, and the locking pin 210 travels downward into the aperture 604-c. With the locking pin 210 securely disposed within the aperture 604-c, the backrest 104 remains in the reclined position 902-c (as depicted in FIG. 10E). In this position, tension in the elastic cord 802 is at a maximum.

[0075] To return the backrest 104 to the upright position 902-a (or the relaxed position 902-b), the user can simply press the button 402 without applying any force to the backrest 104. Due to the tension in the elastic cord 802, the backrest 104 is automatically pulled towards the upright position 902-a. As the portable reclining chair 100 moves towards the upright position 902-a, the tension in the elastic cord 802 is reduced.

[0076] The devices and mechanisms described above are examples of the innovative aspects disclosed herein. However, other embodiments and alternatives, including those listed below, are also within the scope of the present disclosure.

[0077] While the arm plate 602 is described as having three apertures 604, the arm plate 602 can have fewer than three apertures 604 or more than three apertures 604 positioned along the arm plate 602.

[0078] While the button 204 is described as having a dowel pin 208 that restricts movement of the arm 110 relative to the arm plate 602, other mechanisms are contemplated within the scope of the present disclosure. For example, at rest, a pressurized or compressed vessel housed within the arm 110 of the portable reclining chair 100 may compress the arm 110 and the arm plate 602 together, thereby restricting movement of the arm 110 relative to the arm plate 602. When the button 204 is pressed, a surface of the button 204 may counteract the force exerted by the pressurized / compressed vessel, allowing the arm 110 to move freely along the arm plate 602.

[0079] In some implementations, additional components can be snapped or clipped onto the frame of the portable reclining chair 100. For example, a detachable leg rest and / or cupholder can be attached to the front leg element 106-a, or a sunshade accessory can be clipped onto the backrest 104. The arm plate 602 may have additional or alternative apertures 604 to support such customization.

[0080] In the foregoing description, the arm plate 602 is connected to the armrest 706 by an elastic cord 802. However, in other embodiments, an extension spring (e.g., a metal extension spring), piston mechanism, or rubber band can be used to bias the portable reclining chair 100 to an upright position 902-a. Also, while the elastic cord 802 is described as a single strand with two ends, the elastic cord 802 may alternatively be implemented as a continuous loop with no ends. In some implementations, rather than having both ends of the elastic cord 802 secured to the bottom surface of the armrest 706 (as shown in FIG. 8), one end of the elastic cord 802 may be secured to the arm plate 602 and the other end may be secured to the armrest 706.

[0081] Furthermore, while the elastic cord 802 is depicted in FIG. 8 as being wrapped around a fastener (e.g., a screw or bolt) attached to the arm plate 602, other types of structures can alternatively or additionally be used to hold the elastic cord 802. As shown in FIGS. 11A-11C, for example, an arm plate 1102 includes a hook 1108 around which the elastic cord 802 can be secured. The hook 1108 serves to maintain tension in the elastic cord 802 as the arm plate 1102 is moved relative to the armrest 706. The hook 1108 can be formed using various techniques, such as bending, stamping, molding, machining, etc. Apart from the hook 1108, the arm plate 1102 can be structurally and functionally equivalent to the arm plate 602 described above.

[0082] While the hook 1108 illustrated in FIGS. 11A-11C is integral with the arm plate 1102, in other cases the hook 1108 can be part of an insert that is attached to (e.g., snapped onto) the arm plate 1102.

[0083] In some embodiments, the armrest 706 may include a corresponding hook 1108 or member 804 that secures the elastic cord 802 to the armrest 706.

[0084] Other mechanisms for securing the elastic cord 802 to the arm plate and the armrest are also possible.

[0085] While the boss element 702 is described as a molded feature that engages with the slot 704 in the arm plate 602, in some implementations the boss element 702 is an etched feature or a clip-on component. Alternatively, the boss element 702 can be located on the arm plate 602, and the slot 704 can be located on the armrest 706.

[0086] While the actuation mechanism 114 is depicted as having two compression springs that bias the button 204 away from the button housing 202, the actuation mechanism 114 may include fewer than two springs 206 (e.g., one central spring) or more than two springs 206. Also, while the protrusions 302 depicted on the lateral surface of the button 204 are cylindrical, in other implementations the protrusions 302 may have a rectangular or elliptical cross-section. Alternatively, the button 204 may be devoid of protrusions 302, and the springs 206 may reside within an indent or recess in the lateral surface of the button 204.

[0087] In the foregoing description, the button 204 is located on the side of the arm 110-b. In other implementations, however, the button 204 is positioned on the top of the armrest 706. In such cases, a torsional spring can be used to bias the button 204 away from a bottom surface of the button housing 202.

[0088] In some implementations, each arm 110 of the portable reclining chair 100 has a respective actuation mechanism 114, such that the reclining position of the backrest 104 can be adjusted by simultaneously pressing one button 204 on the right arm 110-a and another button 204 on the left arm 110-b. In other implementations, only one arm 110 has an actuation mechanism, in which case the reclining position of the backrest 104 can be adjusted with a single button 204.

[0089] While the arms 110 of the portable reclining chair 100 are described as being injection molded, in some implementations one or both of the arms 110 may be compression molded, blow molded, 3D printed, casted, or manufactured using a computer numerical control (CNC) machine.

[0090] While the backrest 104 and the seat 102 of the portable reclining chair 100 are described as being made of polyester webbing, other materials (such as nylon mesh fabric) can also be used. Likewise, while the frame and leg elements 106 of the portable reclining chair 100 are described as being made of aluminum, other materials (such as plastic, polyvinyl chloride, or other synthetic resins) can be used.

[0091] A number of embodiments have been described. Nevertheless, it is understood that various modifications can be made without departing from the spirit and scope of the present disclosure. Accordingly, other embodiments are within the scope of the following claims.

Examples

Embodiment Construction

[0052]FIG. 1 is a perspective view of a portable reclining chair 100 that includes an actuation mechanism 114 (also referred to as an arm adjustment assembly or a push button mechanism) to allow a backrest 104 of the portable reclining chair 100 to recline relative to a seat 102 of the portable reclining chair 100. The seat 102 and the backrest 104 are made of a woven polyester webbing that supports the user's weight. As depicted in FIG. 1, the portable reclining chair 100 has a foldable frame that includes a front leg element 106-a and a rear leg element 106-b made of aircraft-grade aluminum. The front leg element 106-a and the rear leg element 106-b each include thermoplastic rubber (TPR) elements that provide a non-slip, sticky grip surface to keep the reclining chair 100 securely positioned while in use. These TPR elements also elevate the reclining chair 100 off the ground to protect the bottom surface of the front leg element 106-a and the rear leg element 106-b. To fold the p...

Claims

1. A portable reclining chair, comprising:a foldable base comprising a first leg element and a second leg element;a seat;a backrest;an arm;an arm plate moveable relative to the arm; andan actuation mechanism comprising:a button housing attached to the arm and arranged adjacent the arm plate; anda button at least partially disposed within the button housing,wherein the actuation mechanism is configured to allow the backrest to be reclined relative to the seat when the button is pressed.

2. The portable reclining chair of claim 1, wherein the actuation mechanism is configured such that the button moves toward a surface of the button housing when the button is pressed.

3. The portable reclining chair of claim 2, wherein the actuation mechanism further comprises:at least one spring disposed between the button and the surface of the button housing; anda locking pin disposed within an aperture defined by the arm plate.

4. The portable reclining chair of claim 3, wherein the actuation mechanism further comprises a dowel pin disposed within a slot defined by the button, and wherein the locking pin is coupled to the dowel pin.

5. The portable reclining chair of claim 3, wherein the at least one spring comprises a plurality of compression springs configured to bias the button away from the surface of the button housing.

6. The portable reclining chair of claim 3, wherein:an upward force is exerted on the locking pin when the button is moved towards the surface of the button housing; anda downward force is exerted on the locking pin when the button is moved away from the surface of the button housing.

7. The portable reclining chair of claim 3, wherein the locking pin is positioned within a recess formed by the button such that lateral movement of the button does not impede vertical movement of the locking pin.

8. The portable reclining chair of claim 3, wherein movement of the button towards the surface of the button housing causes the locking pin to be retracted from the aperture defined by the arm plate.

9. The portable reclining chair of claim 8, wherein retraction of the locking pin from the aperture allows (i) movement of the arm relative to the arm plate and (ii) movement of the backrest relative to the seat.

10. The portable reclining chair of claim 8, wherein movement of the button towards the surface of the button housing causes a dowel pin to move along a slot defined by the button, which in turn causes the locking pin to be retracted from the aperture defined by the arm plate.

11. The portable reclining chair of claim 3, wherein movement of the arm relative to the arm plate is restricted when the locking pin is disposed within the aperture defined by the arm plate.

12. The portable reclining chair of claim 1, wherein the arm plate comprises a plurality of apertures that are configured to receive a locking pin of the actuation mechanism and that correspond to reclining positions of the portable reclining chair.

13. The portable reclining chair of claim 12, wherein:the reclining positions of the portable reclining chair include a first position, a second position, and a third position; andthe first position is an upright position, the second position is a relaxed position, and the third position is a reclined position.

14. The portable reclining chair of claim 1, further comprising an elastic cord or an extension spring connected to the arm plate and to a bottom surface of the arm.

15. The portable reclining chair of claim 14, wherein a spring force of the elastic cord or the extension spring biases the portable reclining chair towards an upright position when a locking pin of the actuation mechanism is retracted from an aperture defined by the arm plate.

16. The portable reclining chair of claim 15, wherein the actuation mechanism is configured such that pressing the button retracts the locking pin of the actuation mechanism from the aperture defined by the arm plate.

17. The portable reclining chair of claim 14, wherein:both ends of the elastic cord are secured within notches on a bottom surface of the arm; anda middle section of the elastic cord is held by a member extending from the arm plate.

18. The portable reclining chair of claim 17, wherein the member extending from the arm plate is a hook defined by a surface of the arm plate.

19. The portable reclining chair of claim 1, wherein the arm comprises a boss element configured to engage with a slot defined by the arm plate, thereby maintaining alignment of the portable reclining chair as the arm moves relative to the arm plate.

20. An actuation mechanism for a portable reclining chair, the actuation mechanism comprising:a button housing disposed within an arm arranged adjacent an arm plate of the portable reclining chair, the arm being moveable relative to the arm plate;a button at least partially disposed within the button housing;at least one spring (i) disposed between the button and a surface of the button housing and (ii) configured to bias the button away from the surface of the button housing; anda locking pin,wherein the actuation mechanism is configured such that movement of the button towards the surface of the button housing causes the locking pin to be retracted from an aperture defined by the arm plate, thereby allowing the portable reclining chair to be reclined.

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