ES2565385T3 - Reclining chair sliding forward - Google Patents

Abstract

A chair to support a user sitting on a floor surface while the user sitting is performing tasks, comprising: a base (13): A seat (16) configured for forward-guided movement with respect to said base (13) , said seat including front and rear portions (18,19) connected by a central flexible region (20) that allows said front portion (18) to flex with respect to said rear portion (19) of the seat, including each of said front portions (18) of the seat and said rear portion (19) of the seat a face; a backrest (17) connected to said seat (16) on the pivot axis to pivot with respect to said seat (16) between the upright and reclined positions, wherein the movement of said backrest (17) from said upright position to said reclined position causes both said seat (16) and said pivot axis to move forward with respect to said base (13), and causes said front portion (18) of the seat to flex with respect to said rear portion (19) of the seat in said central flexible region (20), wherein the angle between said upper faces of said front portion (18) of the seat and said rear portion (19) of the seat is increased and the front edge of the front portion (18) from the seat move forward and also pivot down around the central flexible region (20).

Description

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DESCRIPTION

Reclining chair sliding forward Field of the invention

This invention relates to an improved reclining adjustable task chair of the type used in offices. Background of the invention

Modern reclining office chairs can be very comfortable for many people and, due to the advances in recline technology, they can be comfortable for users who sit in various positions from upright to reclined. However, the reclining mechanisms of common office chairs may not fully accommodate certain users who prefer to work in a reclined position with the body stretched in a straight way. For example, it is common to see a designer or computer programmer in an extremely reclined position where they have slid forward in a position where their seats are supported only by the front edge of their chair seat and their back is only supported in the upper back area by the support of your chair headrest. With its feet on the floor, the front edge of the seat is serving as a ledge for the user's seats to prevent them from sliding completely out of the chair. The user's back is arched in such a way that their upper back and head remain substantially vertical although their lower back and waist are relatively straight and significantly reclined. In this type of reclining body position (which is referenced throughout this application), the rear portion of the chair seat and the lower portion of the rear seat support are virtually unused because the user's body is not being supported. by them. In this position, the user's body may be in a position with an almost straight position (except for its arched upper back) still reclined almost 45 ° with respect to the floor although its rear chair support may only be partially reclined.

Typical reclining office chairs provide a substantially flat seat support and rear support surfaces that can adequately support the user when the user feels upright, but does not provide adequate contours and / or curvatures that support a user in the position of the reclining body described above. In addition, these typical office chairs do not move between the upright and reclined positions in a way that provides a proportional transition from the upright to reclined position that supports a user to the extent that they move from the upright to reclined body shape. described above.

Typical reclining office chairs also carry the user's head and shoulders significantly back to the extent that the user reclines. The result is, before the user can resume the work position again after assuming the shape of the reclined body noted above, that they must move their chair forward (rolling it on the base with wheels) to maintain the distance between their eyes and computer screens.

Typical reclining office chairs often provide an adjustable lumbar support device mounted on the chair's back support. However, to the extent that the user reclines, the typical lumbar support remains in the same relationship with the back support. To the extent that the user assumes the anterior reclined body shape and the front portion of the seat becomes the support of the seats, the user's upper legs are supported in a cantilever form between the edge of the seat and the floor and back The user's bottom is separated from the back of the chair and the lumbar supports. This can limit or eliminate the effectiveness of the lumbar support while increasing the pressure of the seats on the seat cornice.

Typical reclining office chairs often provide an adjustable headrest support device mounted on the chair's back support. However, in some chairs, to the extent that the user reclines, the headrest support remains in the same relationship with the back support. In a few other chairs, the head restraint is operated by a 4-bar joint to keep the head restraint substantially vertical as the back reclines. This type of headrest tends to bend the user's neck in such a way that the user's head moves forward with respect to the user's shoulders, effectively pressing the user's chin closer to his chest. The user in the previously annotated reclining body shape may attempt to solve this effect by sitting excessively reclined in a reclining chair that is only partially reclined. This keeps the user's upper back and head supported in a substantially vertical orientation with the head comfortably balanced. Unfortunately, the user sacrifices the right lower back and upper leg support to achieve this working position. The lumbar area of the user's back is like this! supported by the muscles in your back to the extent that it is loosened in the upper area of the rear portion of the seat and the lower portion of the back slightly reclined.

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U.S. Patent No. 677234 (Kelly) discloses a lounge chair that moves the seat and lower back forward as the back reclines. However, neither the seat nor the back of this chair fit the user's shape in the reclined body position noted above. Also, the user's upper back in this chair tends to fall from the user's computer monitor, moving the user's eyes significantly back.

U.S Patent No. 5,979,984 discloses a chair that moves the seat slightly forward pivotally the back support to the stationary base of the chair. Once again, however, the shape of the seat surface does not adequately conform to the shape of the user sitting in the reclined body position noted above. Similarly, the user's upper back in this chair tends to fall from the user's computer monitor and other objects seated on the user's work surface, moving the user's eyes significantly backwards.

US Patent Nos. 6820936 and 7922248 disclose each a seating surface with front and rear portions connected by an area of curvature where the angle of curvature increases proportionally to the angle of recline of the back. However, the seat and the back do not move forward as the back reclines, leaving the seat out of position, and the back (and any lumbar support) separated from the back of a person from the reclined position. previously noted.

EP-A2-0265782 discloses a chair that has an adjustable pelvis-hip support in relation to a front seat position.

EP-A1-2494887 discloses a rocking chair. The seat has a first section in the front and a second section in the back. The seat slides in the front-back direction and the second section can be tilted backwards with respect to the first section.

There is still a need for an office chair that provides sufficient support for the back and legs through a range of complete work posture by conforming to the profile of the user's body and bringing the user's body forward, thus keeping the eyes substantially at the same distance from the screen regardless of the amount of tilt

Summary of the invention

The present invention is defined by the independent claims. Specific embodiments are defined by the dependent claims.

In one embodiment, the back includes an upper portion and a lower portion that can pivot with respect to each other. When the back is moved to the reclined position, the angle between the front faces of the upper and lower back portions decreases.

The previously noted movement of the chair of the present invention provides good support for the rear and upper leg for a user from fully upright to an extreme reclined position. More particularly, the progressive curvature of the back support in the area just below the user's shoulders keeps the user's head and shoulders substantially erect while the user moves from a completely upright posture to a reclined, and the progressive curvature The back support in the area just below the user's shoulders keeps the support to the user's lower back while the user moves from a completely upright posture to a reclining posture. The curvature of the chair seat portion relieves pressure under the user's upper legs to the extent that the user moves from the fully upright position to a fully reclined.

In one embodiment, the angular orientation of the upper portion of the back remains substantially the same as the back moves to the reclined position. In another embodiment, the upper portion and the back are moved in a substantially vertical plane to the extent that the back moves to the reclined position, such that the distance between the upper portion of the back and a fixed object in front of The user's chair, such as a computer monitor, remains substantially the same.

In another embodiment, the chair includes a lumbar pressure arm and the back includes a lumbar support that has a surface to support the lower back area of the seated user. The lumbar support is mounted on a support arm, and the support arm is pivotally mounted on the back. The lumbar pressure arm is mounted on the chair and configured to engage the lumbar support arm to the extent that the back rotates from the upright position to a reclined position. The rotation of the backrest to the reclined position increases the coupling force of the lumbar support arm over the pressure arm, and consequently moves the lumbar support towards the lower back of the seated user. The adjustable lumbar support device can as!

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move forward with respect to the back of the chair to the extent that the user moves from a completely upright posture to a reclined to maintain the coupling with the user's back.

In yet another embodiment, the chair movements can be controlled with an electrically powered movement to move the user from the fully upright to intermediate positions or from the fully reclined position and returning back to the fully upright position with reduced effort.

Before that explains the embodiments of the invention in detail, it should be understood that the invention is not limited to the operation details or construction details and the provisions of the components set forth in the following description or illustrated in the drawings. The invention can be executed in various other embodiments and be practiced or carried out in alternative ways not expressly described herein. Also, it should be understood that the phraseology and thermology used here have the purpose of description and should not be considered as limiting. The use of "includes" and "comprises" and variations thereof means encompassing the items listed below and their equivalents as well! as well as additional items and their equivalents. In addition, enumeration can be used in the description of various embodiments. Unless expressly stated otherwise, the use of the enumeration should not be considered as limiting the invention to a specific order or to a number of components. The enumeration should not be considered as excluding the scope of the invention, nor should the use of the enumeration be considered as excluding the scope of the invention of any additional stage or components that could be combined with the stages or components listed.

Brief description of the drawings

Fig. 1 is a top left perspective view of a first embodiment of the reclining adjustable chair that slides forward.

Fig. 2 is a top left rear perspective view of a first embodiment of the reclining adjustable chair that slides forward.

Fig. 3 is a bottom left rear perspective view of a first embodiment of the adjustable reclining chair that slides forward (which has the side of the left structure removed).

Fig. 4 is a fully reclined front view of the first embodiment of the adjustable reclining chair that slides forward.

Fig. 5 is a fully reclined rear view of the first embodiment of the reclining adjustable chair that slides forward.

Fig. 6 is a side view of a first fully reclined embodiment of the adjustable reclining chair that slides forward

Fig. 7 is a top right perspective view of a first fully reclined embodiment of the adjustable reclining chair that slides forward

Fig. 8 is a bottom right perspective view of a first fully reclined embodiment of the adjustable reclining chair that slides forward

Fig. 9 is a left side view of a first fully reclined embodiment of the adjustable reclining chair that slides forward (which has the side of the left structure removed).

Fig. 10 is a left side view of a first fully erected embodiment of the adjustable reclining chair that slides forward (which has the side of the left structure removed).

Fig. 11 is a left side view of a first fully reclined embodiment of the adjustable reclining chair that slides forward.

Fig. 12 is a left side view of a second fully upright embodiment of the reclining adjustable chair that slides forward.

Fig. 13 is a left front top perspective view of a second fully reclined embodiment of the reclining adjustable chair that slides forward.

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Fig. 14 is a bottom left front perspective view of a second fully reclined realization of the reclining adjustable chair that slides forward.

Fig. 15 is a perspective view of a fragmentary bottom side of a second embodiment of the reclining adjustable chair that slides forward.

Fig. 16 is a fragmentary upper rear perspective view of a third embodiment of the reclining adjustable chair that slides forward.

Fig. 17 is a fragmentary lower right front perspective view of a third embodiment of the reclining adjustable chair that slides forward.

Fig. 18 is a perspective view of an adjustable roller glide of the third embodiment of the reclining adjustable chair that slides forward.

Fig. 19 is a left side view of a fourth fully upright embodiment of the reclining adjustable chair that slides forward.

Fig. 20 is a left side view of a fourth embodiment of the adjustable reclining chair that slides forward (shown reclined approximately a quarter of the recline path)

Fig. 21 is a left side view of a fourth embodiment of the adjustable reclining chair that slides forward (shown reclining approximately half of the recline path)

Fig. 22 is a left side view of a fourth embodiment of the reclining adjustable reclining chair (shown reclining approximately three-fourths of the recline travel)

Fig. 23 is a left side view of a fourth fully reclined embodiment of the adjustable reclining chair that slides forward

Fig. 24 is a bottom left perspective view of a fourth embodiment of the reclining adjustable chair that slides forward without a base with wheels.

Fig. 25 is a top left perspective view of a fourth embodiment of the reclining adjustable chair that slides forward without a base with wheels.

Fig. 26 is a top left perspective view of a fourth embodiment of the reclining adjustable chair that slides forward without a base with wheels.

Fig. 27 is a top left front perspective view of a fifth embodiment of the reclining adjustable chair that slides forward.

Fig. 28 is a left side view of a fifth completely upright embodiment of the reclining adjustable chair that slides forward.

Fig. 29 is a left side view of a fifth fully reclined embodiment of the adjustable reclining chair that slides forward.

Fig. 30 is a view on the left side hidden line of a fifth fully reclined embodiment of the reclining adjustable chair that slides forward.

Fig. 31 is a view in hidden left lateral line of a fifth fully reclined embodiment of the reclining adjustable chair that slides forward

Fig. 32 is a top left rear perspective view of a fifth fully reclined embodiment of the reclining adjustable chair that slides forward

Fig. 33 is a bottom left perspective view of a fifth embodiment of the reclining adjustable chair that slides forward (with the wheel base removed).

Fig. 34 is a left side view of a sixth completely upright embodiment of the reclining adjustable chair that slides forward.

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Fig. 35 is a front view of a sixth completely upright embodiment of the reclining adjustable chair that slides forward.

Fig. 36 is a rear view of a sixth completely upright embodiment of the reclining adjustable chair that slides forward.

Fig. 37 is a bottom left front perspective view of a sixth completely upright embodiment of the reclining adjustable chair that slides forward.

Fig. 38 is a bottom left rear perspective view of a sixth completely upright embodiment of the reclining adjustable chair that slides forward.

Fig. 39 is a fragmentary right partially concealed lateral line view of a sixth fully reclined embodiment of the reclining adjustable chair that slides forward.

Fig. 40 is a fragmentary right rear bottom perspective view of a sixth fully reclined embodiment of an adjustable reclining chair that slides forward.

Fig. 41 is a fragmentary front left lower perspective view of one of a sixth fully reclined embodiment of an adjustable reclining chair that slides forward.

Fig. 42 is a fragmentary right side view of the lumbar area of the sixth completely upright embodiment of an adjustable reclining chair that slides forward.

Fig. 43 is a fragmentary left front top perspective view of a sixth completely upright embodiment of an adjustable reclining chair that slides forward (with the upper seat plates removed).

Fig. 44 is a right front bottom perspective view of the seat assembly of the sixth fully reclined embodiment of an adjustable reclining chair that slides forward.

Fig. 45 is a left front top perspective view of the seat assembly of the sixth embodiment of an adjustable reclining chair that slides forward.

Fig. 46 is a top left front perspective view of the gliding roller frame assembly of the sixth embodiment of an adjustable reclining chair that slides forward.

Fig. 47 is a left front bottom perspective view of the glula roller frame assembly of the sixth embodiment of an adjustable reclining chair that slides forward.

Fig. 48 is a view of a partially hidden right side line of the gluttonous roller frame assembly of the sixth embodiment of an adjustable reclining chair that slides forward.

Fig. 49 is a fragmentary rear left lower perspective view of a sixth completely upright embodiment of an adjustable reclining chair that slides forward.

Fig. 50 is a fragmentary right front bottom perspective view of a completely upright sixth embodiment of an adjustable reclining chair that slides forward.

Fig. 51 is a fragmentary right bottom perspective view of a completely upright sixth embodiment of an adjustable reclining chair that slides forward.

Fig. 52 is a fragmentary left front perspective view of a sixth fully reclined embodiment of an adjustable reclining chair that slides forward.

Fig. 53 is a fragmentary right bottom perspective view of a seventh fully reclined embodiment of the reclining adjustable chair that slides forward.

Fig. 54 is a left side view of an eighth fully upright embodiment of an adjustable reclining chair that slides forward.

Fig. 55 is a fragmentary rear left bottom perspective view of an eighth fully upright embodiment of an adjustable reclining chair that slides forward

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Fig. 56 is a left side view of an eighth fully reclined embodiment of an adjustable reclining chair that slides forward.

Fig. 57 is a bottom left rear perspective view of an eighth fully reclined embodiment of an adjustable reclining chair that slides forward.

Fig. 58 is a top left rear perspective view of the reclining gliding bar assembly of the eighth embodiment of an adjustable reclining chair that slides forward.

Fig. 59 is a top left front perspective view of a ninth fully upright embodiment of the reclining adjustable chair that slides forward.

Fig. 60 is a left side view of a ninth completely upright embodiment of the adjustable reclining chair that slides forward.

Fig. 61 is a left side view of a ninth fully reclined embodiment of an adjustable reclining chair that slides forward.

Certain terminology will be used in the following description for convenience only as a reference, and is not limited. For example, with respect to the chair, "front" is the side of the chair shown in Fig. 4; the abbreviation "RH" means "right hand" and "LH" which means "left hand" as related by the user's right hand or the left hand to the extent that he or she is leaning on the chair while sitting and they face in the same direction of the "front" faces of the chair. The word "sliding" is used where "rolling" could also be used when rollers are involved. The word "pin" is sometimes used where the word "axis" could also be used for pivot connections. The words "internally" and "externally" shall refer to the directions towards and away from, respectively, the geometric center of the reclining adjustable chair that slides forward and the designated parts thereof. Said terminology shall include the words specifically mentioned, derived from them, and words of similar meaning.

Detailed description

Referring to FIG 1-10, a first embodiment of the reclining adjustable chair 10 A is shown that slides forward (hereinafter referred to as "chairs" for convenience) configured with an energy-driven reclining mechanism.

The chair 10A includes a base mount 13 with wheels that has an erect support post 14 projecting from it. The erect support post 14, in turn, mounts a gliding frame 15 thereon that supports the sliding seat 16 which is pivoting to a reclining rear support 17, to support a seated user / occupant. The base assembly 13 with wheels includes a set of adjustable wheels 38. Referring to FIG. 6, the seat 16 has a front portion 18 and rear 19 which are pivotally connected by means of the hinge 20. The back support 17 has upper portions 21 and lower 22 which are pivotally connected by middle of the hinge 23. The lower back support portion 22 is pivotally connected to the rear portion 19 of the seat in the pivot pins 24.

In one embodiment, the upper rear portion 21 is pivotally connected near the upper part thereof to the upper guide 25 by means of the pin 26. The upper guide 25 is slidably supported by the extension 27 of the frame 15 of the gluttony. The upper back portion 21 is pivotally connected near the hinge 23 to the middle guide 31 by means of the guide roller 32. The upper glutton 25 and the middle glutter roller 32 are slidably supported on the extension 27 of the glutton frame 15.

The front portion 18 of the seat is pivotally supported by the glues 28 which are slidably supported and guided by the gluttonic supports 29. The third portion 19 of the seat is pivotally and slidably supported close to the hinge 20 by the glues 30 which are slidably supported by the supports 39 gluttony of the frame 15 glutton. The rear portion 19 of the seat is also pivotable and slidably supported on the rollers 34 with the glides 33.

In this energy-powered embodiment, a linear actuator 35 includes the motor 41 and a screw 42. The front end of the linear actuator 35 is pivotally mounted to the frame 15 on the pins 36. The rear end of the linear actuator 35 is so pivot mounted to a nut 40, at the lower end of the extension arm 37 of the rear portion of the seat 19 near the rollers 34. The motor 41 can be powered by a battery 43, which can be connected with cables through a conventional forward-stop-reverse rocker switch (not shown) that is mounted on a support 44 of the arm by means of a flexible rope (not shown).

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The operation of the first realization 10A of recline and return driven with energy of the reclining adjustable reclining chair is achieved by the user / occupant that operates a rocker switch, which can be mounted on a rest rest support 44 arm or other desired location. Switching "forward" (to recline) drives the motor 35, which in turn rotates the screw 32 such that the nut 40 is pulled by a forward thread. The forward movement of the nut 40 drives the extension arm 37 of the rear portion 19 of the seat along the glutton 33. In the illustrated embodiment, the trajectory of the glues 28 and 30 are controlled by the location of the supports 29 and 39 of glutton respectively which glide the front portion 18 of the seat of the rear portion 19 forward. The glutton supports 29 and 39 have an angle in a predetermined direction such that the front edge of the front portion of the seat 18 tilts progressively downwards as the hinge joint 20 rises.

To the extent that the seat 16 moves forward, the lower portion of the back support 17 is pulled forward by the pivotal connection between the lower rear support portion 22 and the rear portion 19 of the seat on the pivot pins 24 . To the extent that the lower portion 22 of the rear support 17 curves with respect to the upper portion 21 when pivoting around the hinge 23, the upper edge 46 of the upper portion 21 is consequently pulled down 32 which travels down into of the track 31 of the roller gluttony and the glutton 25 which travels down into the glutton support 47. The trajectory of the glutton 25 and the roller 32 are controlled by the location of the glutton support 47 and the glutton track 31 respectively. The chair is returned to a position from a reclined position to a position erected by the user / occupant that activates the "reverse" on the rocker introducer on the support 44 of the arm rest that moves the seat 16 and the support 17 of back new to their respective upright positions.

Referring to FIG. 11-15, a second embodiment of a reclining adjustable chair 10B that slides forward is illustrated. This second embodiment 10B is also an energy-driven version that operates as version 10A except that version 10B includes angularly adjustable glide support braces 50 and 51 that control the trajectory of the gulas 28 and 30 respectively.

For example, the gliding support 50 may be pivotally mounted on the gliding frame 15 on the pivot pin 52 and may be slidably supported on the gliding frame 15 by a shoulder screw 53. As illustrated, the extension arm 54 of the gliding support 50 is pivotally connected to the lower end 55 of the cross-connecting rod 56. The transverse connection bar56 has an internally threaded T portion 57 in which the adjusting screw 58 can be turned. The adjustment screw 58 has the knob 59 exposed to the front end to allow easy adjustment.

The gliding support 51 is pivotally mounted on the March 15 glutton on the pivot pin 62 and is slidably supported on the frame 15 by a screw 63. The extension arm 64 of the gliding support 51 is pivotally connected to the lower end 65 to a cross-connect bar 66. The cross-connecting rod 66 has an internally threaded T-portion 67 in which the adjustment screw 68 can be rotated. Adjusting the screw 68 has the knob 69 exposed at the front end to allow easy adjustment. By adjusting / turning the knobs 56, 69 the cross-linking bars 56, 66 move the glide support braces 50, 51 which change the trajectory of the glues 28,30.

FIGS. 16-18 illustrate a third embodiment of the reclining adjustable chair 10C that slides forward. This embodiment is generally the same as in the second embodiment, and additionally includes the rollers 72 in the glula support 70.71 to reduce the glula fiction when the glues 28.30 are controlled. Glutton 77 includes rollers 78 to reduce glutton friction on glutton 75.

FIGS. 19-26 illustrate a fourth embodiment of the adjustable reclining chair 10D that slides forward. This embodiment is not motor driven. The recline movements are in general the same as those described above in relation to the 10A mode and therefore will not be described again in detail, except that in this embodiment the movement is driven by gravity and the weight of the user / occupant while compression spring 80 assists the user / occupant in the return path to be upright. Figures 19-13 illustrate a sequence of 5 positions along the recline / return path.

As illustrated, the chair 10D includes a base mount 13 with wheels that has an erect support post 14 projecting therefrom. The upright support post 14 in turn mounts a gliding frame 100 thereon that supports the sliding seat 116 that is pivoted to a reclining back support 117, to support the seated user / occupant. The base assembly 13 with wheels includes a set of adjustable wheels 38. The seat 116 has front portions 81 and rear 82 that are pivotally connected by the hinge 85. The back support 117 has upper portion 84 and lower portion 83 that are pivotally connected by the hinge 87. The rear support portion 83 Bottom is pivotally connected to rear seat portion 82 in pivot pins 86

The upper rear portion 84 is pivotally connected near the top thereof to the connector 89 through the past 88. The connector 89 is pivotally connected to the support 104 of the portion

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rear of the seat in the pin 90 at the lower end thereof. The lower rear portion 83 is pivotally connected to the guide extension 106 at the lower end thereof. The guide extension 106 has the rollers 112 that are slidably connected to the guide track 93. The front portion 81 of the seat is pivotally supported by the guide extension 102 through the support support 103. The guide extension 102 has the rollers 113 which are slidably coupled in the guide track 101. The rear portion 82 of the seat has the supports 118 securely attached to the rollers 105. The rollers 105 are slidably coupled to the guide track 94. The rear portion 82 of the seat has the support 108 near the hinge 85. The support 108 has the roller 114 which rolls on the track 111 guide the track bar 107.

The guide frame 100 has the support posts 105 pivotally mounted therein. Guide pins 110 securely attach to support posts 115 at junction point 116 at the front end thereof. The rear portion 82 of the seat has the support extensions 117 securely attached thereto. The support extensions 117 have a crossbar 119 pivotally attached thereto. The transverse bar 109 has the gaps 120 through which the pin 110 is slidably coupled. The compression spring 80 is guided therethrough by the pin 110 and is contained between the support posts 115 and the transverse bar 119.

The upper rear portion 84 has the armrest support 95 attached thereto. As illustrated, the armrest 97 is of an adjustable height attached to the armrest support 95 in the groove 96.

Figs. 27-33 describe a fifth embodiment of the reclining adjustable chair 10E that slides forward. Similar to the previous embodiment, this embodiment is not motor driven. Except as described below, the recline movements generally operate in the same manner as described in relation to embodiment 10A, but driven by gravity and the user / occupant while a compression spring (not shown in these illustrations but which it is applied in a similar manner to compression spring 80 in the fourth embodiment) assists the user / occupant in the return path from back to back upright.

The chair 10E includes a base assembly 13 with wheels that has an upright support post 14 that projects from it. The upright support post 14 in turn mounts on this a guide frame 135 that supports a sliding seat 170 that is pivoted to a reclining back support 171, to support the seated user / occupant. The base assembly 13 with wheels includes a set of adjustable wheels 38. The seat 170 has front portions 125 and rear 127 that are pivotally connected by means of hinge 126. The back support 171 has upper portions 128 and lower 129 that are pivotally connected by hinge 135. The portion Lower rear support 129 is pivotally connected to the rear portion 127 of the seat in pivot pins 133.

The upper rear portion 128 is pivotally connected close to the lower part thereof to the connector 130 by means of the pin 131 on the extension arm 155 of the upper rear portion. The connector 130 is pivotally connected to the recliner connector 134 on the pin 140 at the lower end thereof. The recliner connector 134 is pivotally connected to the upper end thereof to the lower back support 137 in the pin 152 and is pivotally connected to the lower end thereof to guide the frame 135 in the pin 139.

The front portion 125 of the seat may have a securely attached support support 141 extending downwardly therefrom. As shown, the support support 141 is pivotally connected to the guide bar 143 in the pin 144. The path of the guide bar 143 can be controlled by the location and angle of the guide block 165 and the rollers 166. The guide block 165 is mounted to the guide frame 135 and can be angularly adjustable with respect to the guide frame to enable changes in the path of the guide bar143. The rear portion 127 of the seat has the supports 162 securely attached having the rollers 151. The rollers 151 are slidably coupled to the guide track 150. The rear portion 127 of the seat has the support 142 mounted close to the hinge 126. The support 142 has the roller 145 which rolls on the bar 147 of the guide track. The bar 146 of the guide track is pivotally mounted to the transverse frame 167 on the pin 147 and is adjustablely supported by means of the knob screw 14.

The back support 171 includes the frame portions 128, 129 which are illustrated as being open in the area 132. During use, the back support 131 may be covered by a support fabric or membrane that is secured to the portions 128, 129 frame and covering area 132.

Figs. 34-48 describe a sixth embodiment of the adjustable reclining chair 10F that slides forward. This embodiment is not motor driven. Except as described below, the recline movements generally operate in the same manner as described in relation to embodiment 10A, but are driven by gravity and the user / occupant while a gas compression spring 28 helps the user. / occupant on the return trip from resting to standing.

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As illustrated, the chair 10F includes a base mount 13 with wheels that has an erect support post 14 projecting from it. The upright support post 14 in turn mounts on it the frame 235 of the roller guide that supports the assembly 270 of the sliding seat pivotally connected thereto a support 271 with a reclining back, to support a seated user / occupant . The support post 14 may include a conventional height-adjustable gas spring (not shown) that is height adjustable by actuating a protruding button 290 upwardly at the top thereof. As shown, the support is 291 is pivotally mounted on the roller guide frame 235 on the pin 292. The support 291 has the lever 293 securely attached to the bottom thereof. The support 291 has the extension 294 towards the side located above the button 290. The momentary lifting of the lever 293 presses the button 290 down which releases an internal gas spring valve adjustable to the conventional height in the post 14, which allows post 14 to be changed to the height of the seat desired by the user.

The upper face of the seat assembly 270 may be covered by a layer of cushioning foam and fabric, which are not shown. As in the previously described embodiments, the base assembly 13 with wheels may include a set of orientable wheels 38. The seat 270 has front portions 225 and rear 227 that are pivotally connected to the hinge 226. The rear support 271 has the upper portions 228 and lower 229 are pivotally connected by the hinge 287. The rear support portion 229 Bottom is pivotally connected to the rear portion 227 of the seat in the pin 233 of the pivot on the support 262 of the seat support.

The upper rear portion 228 is pivotally connected near the lower end thereof to the upper end of a connector 230 by means of the pivot pin 231 on the extension passage 252 of the upper back portion 28. The lower end of the connector 230 is pivotally connected to the connector 234 on the pin 240. As shown in Fig. 40, the connector 234 is pivotally connected at the lower end thereof to a support 237 of the back 229 lower on the pin 252 and pivotally connected at the upper end thereof to the rear end of the connector 299 on the pivot 239. The connector 299 is connected to the seat support support 262 of the rear portion of the seat 227 on the pivot 190 at the front end of it. The support 237 is also pivotally connected to the guide bar 248 in the pin 218. The guide bar 248 is supported and guided by the rollers 246 in the vicinity of the 35 of the roller guide. The connector 230 can be adjustable in length when it optionally has three parts: the upper connector 230A, the lower connector 230B and the sleeve connector 230C. In the illustrated embodiment, the upper connector 230A has a threaded lower end RH, a lower connector 230 has the threaded upper end LH. The 230C sleeve connector has the upper case RH threaded end and a case LH threaded lower end

The front portion 225 of the seat has the support support 241 securely attached close to the front end thereof. The support 241 is pivotally connected to the guide bar 243 in the pin 244. The path of the guide bar 243 is controlled by the guide block 265 and the guide rollers 266. The rear portion 227 of the seat has the support 262 securely attached having the roller 251. The roller 251 is slidably coupled to the guide track 250. Track 250 may include niche 267 at the end back. The user's weight pressure pushes the 271 downward causing the roller 251 to engage with the niche 267 when the 271 is the most posterior location. The rear portion 227 of the seat has the support 242 securely attached close to the lower rear edge thereof. The guide bar 236 is pivotally mounted on the support 242 on the pin 247. The path of the bar 236 is controlled by the rollers 245 mounted on the guide block 265.

The rear portion 227 of the seat near the edge of the lower rear side thereof has the support 227 securely attached to the ball pivot 276 at its rearmost end. The frame 235 of the roller guide has the support 275 securely attached that projects forward from the upper side thereof. The support 275 has the ball pivot 274 attached at the front end thereof. The gas compression spring 280 is pivotally attached to the ball pivot 276 at the end 273 backward and the forward end 272 is pivotally attached to the pivot 274.

The rear seat portion 227 near the edge to the side has a securely attached arm rest support 269 that extends outwardly therefrom. The assembly 268 of the arm rest can be securely attached to the support 269 of the arm rest and can extend upwards thereof. The rear portion 227 of the seat includes the plate 253. The plate 253 includes the opening 254 and the cornice 256. The cornice 256 supports the cutting plate 257 for improved damping of the user seats.

The back support 271 includes the frame portions 228, 229 that define the open area 232. In use, the back support 271 may have a support fabric or membrane (not shown) secured to the frame portions 228,229 and the covering area 232.

As shown in Figs. 40 and 42, the back support 271 includes the arm 288 pivotally connected to the extension 255 in the pin 231 and is suspended downwardly therefrom. The arm 288 has the support 286 mounted slidably / securely near the lower end thereof. Support 286 supports the

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lumbar pressure pad 289. The support 286 has two halves 286A and 286B that fix the arm 288 between them by means of the adjustable fixing force of the screw-knob 285 thus making the height of the lumbar pressure pad 289 adjustable on the arm 288.

The connector 234 has the spring arm 284 mounted on it at the lower end thereof. The upper end of the spring arm 284 includes the elongate groove 283. In the upper end portion of the spring arm 284, the roller support 282 is mounted adjustable thereto. The roller support 282 has a threaded recess to which the screw-knob 281 is attached when passing through the elongated groove 283, fixing the spring arm 284 between them by an adjustable fixing force of the screw-knob 283, making this way the height of the support 282 of the adjustable roller on the spring arm 284. The roller support 282 includes the roller 278. The roller 278 makes contact with the face 279 towards the back of the arm 288.

The pivots on the connector 234, the lower back 229, the connector 299 and the support 262 form a 4 bar connector that controls the orientation of the connector 234, which maintains the orientation of the connector 234 substantially the same, regardless of the angle of inclination of the 229 lower back support. Therefore, to the extent that the lower back 229 recline, the face 279 of the arm 288 is forced against the roller 278. This action causes the spring arm 284 to resist backward movement at the upper end thereof and force the arm 288 to pivot forward with respect to the lower back 229, which carries the lumbar pressure pad 289 forward a greater extent than the forward displacement of the 270, thereby increasing the support pressure of the lumbar area of the Username. The extent of the forward arc displacement of the arm 288 is determined by the height at which the roller 288 makes contact with the face 279.

During the movements of inclination and return to the upright position, the seat 270 and the back support 271 are driven forward and backward by the actions initiated by the user. To the extent that the back support 271 reclines, the rear portion 227 of the seat moves forward and also pivots down about an axis defined by the roller 251 and the front portion 225 of the seat causes it to move forward , and also pivots down around the axis of the hinge 226 to increase the angle between the upper surfaces of the front portion 225 of the seat and the rear portion 227 of the seat.

More particularly, to the extent that the user pushes the support 271 back to recline it, the lower back 229 pivots downwardly around the axis 233 causing the pin 218 and the rearward end of the glutton bar 248 pivots downward around the shaft 233, such that in the lower back 229 pivots with respect to 270. In an alternative embodiment, the pivot can occur in a different structure of a pivot pin, which includes a flexible material, a flexible portion of the material such like a live hinge, or other type of hinge mechanism. In the illustrated embodiment, the gula bar 248 applies pressure to the rollers 246 which glide the gula bar 248 in a forward and downward path that causes the chair 270 and the axis 233 to move forward. The forward movement of the chair 270 and the shaft 233 result in the pressure of the action of the bar 248 gliding against the rollers 246 to the extent that the lower back 229 arches down. To the extent that the seat 270 moves forward it is generally guided by the roller 251 (shown in Fig. 44) along the track 250 on the roller guide 235 structure. Since the seat 270 moves forward, the rod 236 glues that is pivotally attached to the rear portion 227 of the seat, is carried along and follows a path controlled by the rollers 245 in the frame 235 of the guide roller. The trajectory of the bar 236 glues to the extent that it moves through the rollers 245 causes the rear portion 227 of the seat to pivot down about the axis 233 as the seat 270 moves forward. Furthermore, as the seat 270 moves forward, the glutton bar 243, which is pivotally attached to the front portion 225 of the seat, is carried along and follows a path controlled by the rollers 265 in the glutton frame 235 of roller. The trajectory of the bar 243 glues as it moves through the rollers 265 causes the front portion 225 of the seat to pivot down around the hinge 226 to the extent that the seat 270 moves forward.

As the lower back 229 reclines, pivoting downwardly around the axis 233, the upper back 228 pivots around the axis 287 to decrease the angle between the front surfaces of the upper back 228 and the lower back 229 respectively. More particularly, since the connector 234 remains in substantially the same orientation, the connector 230, which is connected between the connector 234 and the extension 255 of the upper back 228, maintains the upper back 228 in substantially the same orientation along its entire path. of displacement to the extent that it pivots around the axis 287 with respect to the lower back 229 in recline. Figures 60, 61 illustrate that in similar operating embodiments 10F, 10G, 10H and 10J axis 287 (or 487) remains substantially horizontal stationary on base 13 as long as seat 270 and axis 233 move towards ahead. In one embodiment, the initial force required to recline the lower back 229 is increased when the seat 271 is fully rearward due to the additional force required to drive the roller 251 out of the niche 267 on the track 250. The extension of the angle of inclination of the lower back 229 can be controlled by the distance at which the bar 248 is allowed to move. The arc displacement of the rear portion 227 of the seat is controlled by the path of the bar 236 glutton. The arc displacement of the front portion 225 of the seat is controlled by the path of the bar 243.

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Figs. 49-53 describe a seventh embodiment of the reclining adjustable 10G chair that slides forward. The structure and basic movements of the chair 10G are approximately identical to the chair 10F except that the movements are energized by means of an electric line actuator 380 that replaces the gas spring 280. The roller gula frame 335 includes all the components of the roller gula frame 235 except that the support 275 and the ball pivot 274 are replaced by the support 375 and the pivot pin 374. The rear seat portion 327 includes all components of the rear seat portion 227 except that the support 277 and the ball pivot 276 are replaced by the support 377 and the pivot pin 376. Linear actuator 380 includes body portion 310 and drive bar 396. The body portion 310 includes the engine 394 and the screw housing 395. The linear actuator 380 is pivotally connected to the support 377 in the pivot pin 376 near the end 397 towards the back of the torch housing 395 thereof. The drive bar 396 is pivotally attached to the support 375 in the pivot pin 374 at the front end thereof. The operation of the linear actuator 380 is conventional because, the shaft (not shown) of the motor 394 rotates a tightening screw (not shown) inside the toner housing 395. The end (not shown) toward the back of the drive bar 396 includes a threaded nut that is coupled with the tightening screw. Rotation of the tightening screw in one direction extends the drive rod 396 out of the portion 310 of the body. Rotation of the screw in the opposite direction retracts the drive rod 396 inward toward the portion 310 of the body.

The motor 394 is powered by the battery 343 which is connected by cables through a conventional forward-stop-reverse rocker switch (not shown) that is mounted on the armrest support 268 by means of a rope ( not shown) flexible. The operation of the energy-driven inclination and the return movements of the seventh embodiment 10G are achieved by the user / occupant who operates the rocker switch on the support 268 of the armrest. Operating the rocker switch "forward" (for recline) rotates the motor and the tightening screw in such a way that the nut on the drive bar 396 is pulled by thread backwards, retracting the retractable drive bar 396 pulls the portion 310 of the body forward, the seat 270 forward and the lower backrest 229 forward and downward, while simultaneously curving the upward surface of the seat 270 and the forward surface of the backrest 271. Actuating the rocker switch of "Reverse" (to return to the upright position) rotates the motor and the tightening screw in such a way that the nut on the drive bar 396 is pushed forward by thread, extending the drive bar 396. Extending the drive bar 396 pushes the portion 310 of the body backwards, the seat 270 backwards and the backrest 229 downwards backwards and upwards, although at the same time the curve is proportionally straightened in the upper surface of the seat 270 and the curve on the front surface of the backrest 271.

FIGS. 54-58 describe an eighth embodiment of the reclining adjustable chair 10H that slides forward. This embodiment is not motor driven. The reclined movements are driven by gravity and by the user / occupant while the gas compression spring 480 assists the user / occupant in the return path from the reclined to upright position.

The chair 10H includes a base mount 13 with wheels that has an erect support post 14 projecting from which includes a height-adjustable conventional gas spring (not shown). The upright support post 14 in turn mounts on this the roller glutton frame 435 that supports the sliding seat assembly 470 that has pivotally connected to it the reclining back support 471, to support a seated user / occupant .

The upper face of the seat assembly 470 will normally be covered by a layer of foam and fabric cushioning, which is not shown. The base assembly 13 with wheels includes a set of adjustable wheels 38. Seat 470 has front portions 425 rear and 427 that are pivotally connected by hinge 426.

The back support 471 has upper portions 428 and lower 429 that are pivotally connected to hinge pivot 487. The lower back support portion 429 is pivotally connected to the rear seat portion 427 in the pivot pin 433 on the seat support support 462 for angular displacement between the upright and reclined positions. The upper back portion 428 is pivotally connected near the lower end thereof to the upper end of the connector 430 by the pivot pin 431 on the extension arm 455 of the upper back portion 428. The glutton bar 448 includes a support 434 securely attached to the rear end thereof. The support 434 includes the pivot 440 near the upper end thereof. The connector 430 is pivotally connected to the rod 448 glutton on the pivot 440 at the lower end thereof. The lower back portion 429 is also pivotally connected to the glutton bar 448 on the pivot 418 to control the erect extension for angular recline displacement. The glutton bar 448 is supported and guided by the rollers 446 in the roller glutton frame 435.

The rod 448 glides between the pivots 440 and 418 the portion 429 of the lower back between the pivots 417 or 418, the connector 430 between the pivots 431 and 440 and the upper back 428 between the pivots 487, 431, form a connector of 4 bars that controls the orientation of the upper back 428. Due to the straight path of the 448 glutton bar,

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guided by the rollers 446, as described in the chair 10H, the orientation of the upper back 428 remains substantially the same regardless of the recline angle of the lower back support 429.

The front portion 425 of the seat is securely attached to the support support 441 near the front end thereof. The support 441 is pivotally connected to the rod 443 glutton on the pivot 444. The path of the rod 443 glutton is controlled by the block 465 glutton and the rollers 466 glutton. The rear seat portion 427 is securely attached to the support 462 and includes the glula roller 451 securely attached. The glula roller 451 is slidingly engaged in the glutton track 450. The rear portion 427 of the seat includes the support 442 near the lower rear edge thereof. The guide bar 436 is pivotally connected to the support 442 in the pivot 447. The trajectory of the guide bar 436 is supported and controlled by the rollers 445 mounted in the block 465 guinea pig.

The rear portion 427 of the seat near the lower rear edge thereof includes the support 477 which has the ball pivot 476 at its rearward end. The roller glutton frame 435 includes the support 475 projecting forward from the upper side thereof. The support 475 has the ball pivot 474 attached to the front end thereof. The gas compression spring 480 is pivotally attached to the ball pivot 476 at the end 473 rearward and the forward end 472 is pivotally attached to the ball pivot 474.

The rear portion 427 of the seat near the edge to the side includes a support 469 of the armrest assembly extending outwardly therefrom. The armrest support 469 is securely and height-adjustable attached to the armrest assembly 468 that extends upwardly therefrom.

The back support 471 includes the portions 428 and 429 frame that define the area 432 between them. In use, the back support 471 will have a support fabric or membrane (not shown) secured to the frame portions 428, 429 and the covering area 432.

The lower back portion 429 has the arm 488 pivotally attached to the pivot 453 and projects upwardly thereof. The arm 488 has the support 486 mounted close to the upper end thereof. The support 486 supports the lumbar pressure pad 489.

The spring arm 484 is securely mounting on the support 434 of the rod 448 in the lower end thereof. The roller mounting bracket 482 is mounted close to the upper end of the spring arm 484. The roller 478 is pivotally attached to the roller mounting support 482. The roller 478 makes contact with the face 479 towards the back of the arm 488.

To the extent that the lower back 429 reclines, the face 479 of the arm 488 is forced against the roller 478. This action causes the spring arm 488 to resist backward movement at the upper end thereof and forces the arm 488 to pivot forward with respect to the seat 470, which leads the lumbar pressure pad 489 forward to a greater extent than the forward movement of the seat 470, thereby increasing the support pressure on the user's lumbar area. The extension of the forward arc displacement of the arm 488 is terminated by the initial location (height) in which the roller 478 makes contact with the face 479.

During the recline and back-up race, the seat 470 and the back support 471 are propelled forward and backward respectively. The forward movement results from the pressure of the action of the rod 448 gliding against the rollers 446 to the extent that the lower back 429 arches downwards. The extension of the lower back recline angle 429 is controlled by the distance in the distance glider bar 448 being allowed to move. The arc displacement of the rear portion 427 of the seat is controlled by the trajectory of the bar 436. The arc displacement of the front portion 425 of the seat is controlled by the trajectory of the bar 443.

Figures 59-61 describe the ninth embodiment of the reclining adjustable chair 10J that slides forward. This embodiment is identical to embodiment 10F (Figs. 34-38) with the edition of the headrest support 215 extending forward from the upper portion 228 of the back support 271. In Figures 60 as 61, the vertical phantom line 217 is aligned with the pivot 233 and the vertical phantom line 266 is aligned with the pivot 287 indicating the horizontal locations of the pivots 233 and 287 with respect to the fully erected base 13 (fig. .60) and fully reclined (fig. 61).

The distance of the forward movement of the seat for the embodiments varies from 10 inches for the chair 10A to 6 inches for the chair 10F. The best range of forward movement is 5 to 7 inches. To maintain the user's viewing distance, the best performance for any of the above embodiments is achieved when the upper back portion of the seat does not move significantly backwards as the seat moves forward.

The above description is that of the current embodiments of the invention. The disclosure is presented for illustrative purposes and should not be construed as an exhaustive description of all embodiments of the invention to limit the scope of the claims of the specific elements illustrated or described in connection with these embodiments. For example, and without limitation, any of the individual element (s) of the described invention may be replaced by alternative elements that provide substantially functionality.

similar or provide another appropriate way of operation. This includes, for example, currently known alternative elements, such as those that could usually be known by a person moderately versed in the art, and alternative elements that could be developed in the future, such as those that a person skilled in the art could , after development, recognize as an alternative. In addition, the 10 embodiments of the description include a plurality and features that are described in concert and that could

Cooperatively provide a collection of benefits. The present invention is not limited only to those embodiments that include all these features or that provide all these benefits except to the extent to which they are expressly stated otherwise in the claims presented. Any reference to elements of the revindication in the singular, for example, using the articles "a" "one" "the" "said" should not be considered as limiting the element to the singular.

Claims (10)

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A chair to support a user sitting on a floor surface while the user sitting is performing tasks, comprising: a base (13): A seat (16) configured for the forward guided movement with respect to said base (13), said seat including front and rear portions (18,19) connected by a central flexible region (20) that allows said portion (18) front bending with respect to said rear portion (19) of the seat, each of said front portions (18) including the seat and said rear portion (19) of the seat being one face; a backrest (17) connected to said seat (16) on the pivot axis to pivot with respect to said seat (16) between the upright and reclined positions, wherein the movement of said backrest (17) from said upright position to said reclined position causes both said seat (16) and said pivot axis to move forward with respect to said base (13), and causes said portion ( 18) front of the seat flexes with respect to said rear portion (19) of the seat in said central flexible region (20), wherein the angle between said upper faces of said front portion (18) of the seat and said portion (19) Rear seat is increased and the front edge of the front portion (18) of the seat moves forward and also pivots down around the central flexible region (20). 2. A chair according to claim 1, wherein said forward guided movement of said seat (16) and said angular increase between said upright faces and said front portion (18) of the seat and said rear portion (19) of the seat they are proportional to said back rotation. 3. A chair according to claim 2, wherein said backrest (17) includes a lumbar support pad (289) mounted on it and wherein said lumbar support pad causes it to move relative to said backrest (17) in a direction towards the lower back of the occupant seated to the extent that said back rotates from said upright position to said reclined position. 4. A chair according to claim 2, wherein said backrest (17) has the upper and lower portions (21, 22) connected by a flexible region (23) between them, such that said upper portion (21) it can be flexed with respect to said lower portion (22) in said flexible region (23), each of said upper and lower portions including a surface facing forward, wherein the angle between said upper and lower portions decreases to the extent that said backrest (17) rotates from the upright to reclined position. 5. A chair according to claim 3, wherein said backrest has upper and lower portions (21, 22) connected by a flexible region (23) between them, such that said upper portion (21) can flex with respect to to said lower portion (22) in said flexible region (23), each of said upper and lower portions including a surface facing forward, wherein the angle between said surfaces facing forward of said upper and lower portions decreases to the extent that said portion (22) rotates from the upright position to reclined. A chair according to claim 5, wherein said upper portion (21) includes a headrest support structure (215) that generally extends upward and wherein said headrest support structure maintains its orientation in relation to said base (13) to the extent that the lower back portion (22) rotates from the upright position to reclined. 7. A chair according to claim 1, wherein said rear seat portion (19) includes at least one armrest structure (44) extending upwardly extending therefrom. A chair according to claim 5, wherein said upper back portion (21) includes at least one armrest structure (95, 97) that extends forward, extending therefrom. 9. A chair according to claim 2, wherein the movement of said backrest (17) with respect to said seat (16) from said reclined position to said upright position, the movement of the pivot axis backwards, and the decrease at the angle between said faces upwards of said seat portion are assisted by spring. 10. A chair according to claim 2, wherein the movement of said backrest (17) with respect to said seat (16) from said reclined position to said upright position, the movement of the pivot axis backwards, and the decrease at the angle between said faces upwards of said seat portion are driven by an electric motor. 5 11. A chair to support a user sitting on a floor surface while the seated user performs tasks, which includes: a base (13); a seat (16) configured for forward guided movement with respect to said base (13), said seat including front and rear portions (18, 19) connected by a hinge joint (20) that allows said portion (18) front of the seat pivot with respect to said rear portion (19) of the seat, each of said front portion (18) including the front seat and said rear portion (19) of the seat facing upwards; Y a backrest (17) connected to said seat (16) on a pivot axis for pivoting with respect to said seat (16) between the upright and reclined positions, wherein the movement of said backrest (17) from said upright position to said reclined position causes both said seat (16) and said pivot axis to move forward with respect to said base (13), and makes said portion (18) front of the seat pivot with respect to said rear portion (19) of the seat in said hinged joint (20), wherein the angle between said faces upward of said front seat portion (18) and said portion (19 ) Rear seat is increased and the front edge of the front portion (18) of the seat moves forward and also pivots down around the hinge joint (20).