DE2332751A1 - ADJUSTABLE ARMCHAIR WITH TWO-PIECE BACKREST - Google Patents

Description

Irish message from 899 Lindau (Bodensee)

Rennerle 10 P.O. Box 3160

June 22nd 1973

The Berklin Corporation,

80 Progress Avenue, U / est Springfield, Massachusetts, USA

l / adjustable armchair with two-part backrest

The present invention relates to an adjustable armchair with a two-part backrest.

A main object of the invention is to provide an adjustable To provide an armchair that has a two-part backrest, one part of which is withdrawn when the chair is in an upright or sitting position and is automatically movable to a position in which it is

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Telegraph office hours Bank accounts: Postal checking account:

placed just above the other part of the backrest when the chair is reclined, around the neck and to support the head of a chair occupant.

It is a primary feature of the invention to provide an reclining armchair of the type described, wherein at Movement of the body-supporting component between the middle and fully reclined positions of the upper part of the two-part backrest in an extended position relative to the lower part of the backrest locked and clamped, making the two move together as one unit.

The invention is described in connection with the accompanying drawings.

It shows:

Fig. 1 is a fragmentary side view of an adjustable armchair incorporating the structure of the invention; the chair being shown in an upright or sitting position;

FIG. 2 is a side view of the hinge mechanism included in the chair of FIG. 1, the mechanism is shown in the middle tilted back or television position;

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FIG. 3 is a side view of the hinge mechanism from FIG. 2, the mechanism being shown in the fully reclined position.

In Fig. 1 an adjustable armchair is shown, the a supporting frame 10, a seat 12 and a two-part backrest 14, which includes a base 15 and has an upper part 16. The lower part 15 of the backrest is pivotally attached relative to the seat, while the upper part 16 of the backrest is pivotally attached relative to the lower part of the backrest.

The seat and the back support form a supportive body Subassembly that has a pivotable relation to the supporting frame 10.

The hinge mechanism is one of a pair of these, one on each side of the chair between the supporting one Frame and the respective adjacent sides of the seat and the backrest are attached.

The hinge mechanism rests on a transverse frame 18 which extends relative to and between the opposite sides of the supporting frame extends transversely and is attached to the sides.

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A substantially horizontally extending basic holder 20 is fixed at its front end to the transverse frame 18, for example by bolts 22, which extend through a flange 20 ¹ on the basic holder and through the transverse frame and have nuts 24 screwed thereon.

The base holder 20 is on its opposite or rear end to the supporting frame 10, for example by screws or bolts 26, attached.

Of course, it will be understood that the hinge mechanism can be otherwise attached to the supporting frame without deviate from the invention.

The base holder 20 extends lengthwise or in a dimension from the front to the back of the chair and a stop 28, which extends from the base holder next to his front end extends outward and serves to limit the downward movement of the hinge mechanism.

A seat holder 30 is stationary on the lower edge of the seat 12, for example by screws 31 or the like., attached.

An L-joint 32 is on one side of the lower part 15 of the

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The backrest is fastened, for example by screws 34, and contains a lowermost, forwardly extending foot part 32 ¹ , the forward-facing end of which is pivotably connected at 36 to the seat holder 30.

The seat 12 and the backrest 14 are pivotable to Movement relative to the supporting frame is absorbed by means of a primary pivot joint 38, which at 4G at its upper end is pivotably connected to the L-joint 32 and thereby to the back support 14 and at 42 its lower end is pivotably connected to the base holder 20 and thereby to the supporting frame 10.

In addition, the seat and back support are movable by secondary and tertiary pivot joints 44 and 46, respectively pivotally received relative to the supporting frame, as will be apparent.

A fully articulated two-piece legrest or leg support member, generally with is attached to the front end of the chair and includes a larger leg support portion 52 and a smaller leg support part 54, which is pivotably mounted on it next to its lower end.

The legrest component, which consists of one part instead of

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could consist of two parts is by means of a tax hinge attached to the front end of the seat 12 for movement between a retracted position (Fig. 1) and an extended position (Figures 2 and 3) and a number of positions therebetween.

In the fully upright or seated position of the chair (Fig. 1), the larger leg support portion 52 is flush with the forward pointing vertical U / and of the seat 12 arranged while the cooperating legrest part 54 extends from the lower end of the larger legrest part extends rearward to be hidden under the seat 12 invisibly.

When the larger leg support part 52 is raised and pushed forward is, the cooperating smaller legrest portion 54 is in a position in front of and in axial alignment moved with it.

The leg support member is suspended from the seat 12 by an arrangement including a tertiary pivot 46, a primary actuation hinge 56 and a secondary actuation hinge 58 includes.

The tertiary pivot joint 46 is pivotably mounted at 60 at its upper end on the seat holder 30 and is at 62 at its opposite lower end at the front

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The end of a lifting rod 64 to be described is pivotally mounted.

A drive link 66 is at the Schujenkpunkt 62 on its rear end pivotally mounted on the lifting rod 64 and is at 68 at its opposite front end on the approximate Witte of the primary actuating joint 56 mounted pivotably.

The primary operating hinge 56 is at 70 at its upper Pivotally mounted at the end of the seat holder 30 and at 72 at its opposite lower end to the lower one End of a tertiary actuation hinge 74.

The secondary operating hinge 58 is pivotally mounted on the seat holder 30 at 76 at its upper end under its Witte on the tertiary operating hinge 74 and at 80 at its opposite lower end on the lowest extreme tip of a primary lifting hinge 82.

The primary lift hinge 82 is pivotable at 84 at its opposite front end on a larger leg support plate 86, which serves as a support for the larger leg support part 52.

The primary lift hinge 82 is at 88 above its center

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pivotally mounted on a secondary lifting hinge 90.

The secondary lifting hinge 9G is at 92 at its upper end pivotally mounted on the upper end of the tertiary actuation hinge 74 and is pivotable at 94 at its opposite lower end to the lower end of a primary control joint 96 mounted.

The primary control joint 96 is pivotally mounted at 98 at its front end on a small leg support plate 100, which serves as a support for the smaller leg support part.

Larger and smaller leg support plates 86 and 100 are articulated to one another by means of a pivot connection 102.

EiVi secondary control joint 104, which is located between the larger leg support plate 86 and primary control pivot 96 is pivotable at 106 at one end thereof mounted on the larger leg support plate and is pivotable at 108 (see FIGS. 2 and 3) at its opposite end mounted on the primary control joint.

In the upright position of the chair, as shown in Fig. 1, with the legrest retracted, the leading edge of the tertiary actuator 74 abuts the

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trailing edge of the primary lifting joint 82 on to the region of the Rückujärtabeuiegung to limit the leg rest, is curved ujobei the trailing edge of the primary lifting joint at 110 (s _e FIGS. 2 and 3) to the front edge of the tertiary Betätigungagelenkes fitted receiving therein.

In the reclined positions of the chair, as seen in FIGS. 2 and 3, with the leg rest extended, is a tab portion 112 on the front edge of the primary actuation hinge 56 adjacent the lower end thereof in one Groove 114 received on the rear edge of the secondary actuation hinge 58 to reduce the area of extension of the Limit legrest "

The lift bar 64 connects to the leg brace hinge assembly with the supporting frame 10 by means of the tertiary pivot joint 46, u / elches at 62 pivotable on the front part the lifting rod is supported.

The lifting rod 64 rotates about a pivot point 116 at its rear part relative to the base holder 20.

The lower edge of the lifting bar is provided with a recess 118 next to its front end, which is suitable to abut the stop 28 on the base holder 20 in order to reduce the downward movement of the lifting rod over the desired limits

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to prevent beyond.

A friction plate 120 is pivotally mounted at 122 on the lift rod 64 and is arcuate Front edge 124 provided, which next to its upper extreme tip in an offset projection or flange 126 ends, which as a stop in the fully reclined position of the chair in a: recess 128 which is provided in the upper edge of the lifting rod 64, as can be seen in FIG.

Part of the lift bar 64 adjacent to the arcuate edge 124 of the friction plate 120 is deformed to provide an offset friction finger 130, the friction finger and the lift bar cooperate to allow the insertion of a portion of the friction plate 120 therebetween, one flat surface of the friction plate being flush with the inner flat surface of the lift bar 64 and the other flat surface of the friction plate is flush with the inner flat surface of the friction finger 130.

A bolt 132 extends laterally through the friction finger 130 and has a wing nut 134 that rests thereon screwed and tightened against a washer 136, the washer being of an appropriate size, to bridge the opening in the lifting rod 64, which is through

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the formation of the friction finger 130 is brought about, to lie flush against the outer flat surface of the lift bar.

The wing nut 134 is tightened against the washer 136, Therefore, the Raibungafinger 130 is pulled inwards to the frictional engagement between the friction plate 120 and the Increase lifting thong 64, and vice versa is done by loosening the Wing nut 134 the frictional engagement between the friction plate 120 and the lifting rod 64, the whole acting as an adjustable braking system, whereby the Force or weight required to both seat as well as the backrest in one of a number of reclined positions according to the commands of the seat occupant, is varied.

A cut-away lowermost part of the friction plate 120 forms a hinge part 138 which is pivotable at 140 the lower end of the secondary pivot joint 44, with the secondary pivot joint in turn at 142 at its upper end pivotably mounted on the seat holder 30.

A control joint 144 is pivotably mounted on the base holder 20 at 146 at its lower end and is attached to it at 148 its opposite or upper end on the friction plate

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120. The control link 144 works to lift the seat during the angular position of the body receiving member to steer into the fully reclined chair position.

The upper part 16 of the back support is through now to be described Arrangements operable with which to take up the body— the component, the supporting frame and the leg support operably connected for flexion between a retracted Position when the chair is in an upright position and one above the lower part 15 of the backrest lying position when the chair is tilted back, the upper part 16 of the back support and the leg support 50 at the same time reach their respective extended position.

The top 16 of the back support is attached to the upper ends of a pair of rods 150, one of which is shown in FIGS Only one of the drawings is shown, but each of which is attached to a support plate 152 at its lower end is. Instead of rods 150, a single support member or plate could be used.

The upper part of the back support between a retracted position wherein it is disposed in the lower part of the back support, when the chair is in a retracted position, as shown in FIG _o 1, and an extended

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Position movable, he marin above the upper end of the lower Part of the backrest is arranged when the chair is tilted back, as in Figs.

A first pivot joint 154 is at one end at 156 pivotally mounted at the top of the support plate 152 and at its opposite end at 158 on the top End of the L-joint 32.

A pivot joint 160 is at one end at 162 pivotally mounted at the lower end of the support plate 152 and at its opposite end at 164 at the approximate Center of the L-joint 32.

A first locking hinge 166 is pivotally mounted at one end on support plate 152 at pivot point 156 and at its opposite upper end at 168 at one end of a second locking hinge 170, which at his opposite lower end is pivotally mounted at 172 on the L-joint 32.

A connecting hinge 174 is pivotable at one end at 176 about the center of the first locking hinge and is pivotally mounted at its opposite end at 178 on one end of a lever 180, which at its opposite front end pivotable to the

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Seat plate 30 is mounted at pivot point 36.

A drive link 182 is pivotally mounted on the base bracket 20 at one end at 184 and at its opposite end End at 186 to the approximate center of the seat joint 180.

A first stop 188 on the support plate 152 can be at an edge of a second. Attack swivel joint 160 to prevent the upper part 16 of the back support from being withdrawn to prevent beyond a desired limit when the chair is in the upright position.

A second stop 190 on the support plate 152 can engage an edge of the first locking hinge 166 in order to to prevent the first locking hinge 166 and the second locking hinge 170 from being traversed, thereby reducing those Joints assume a locked or locked position, to prevent the backrest top 16 from moving beyond a desired limit when the chair is the tilted back position of Fig. 2 reached.

In Fig. 1, which shows the relative positions of the components of the Joints illustrated, when the chair is in the fully upright position, it will be seen that the leg support 50 is withdrawn, with the larger leg rest part

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is mounted flush with the front end of the seat 12 and the smaller legrest part 54 is arranged behind the same under the seat 12 and the upper part 16 of the headrest is retracted in the lower part 15 of the backrest. The lifting rod 64 lies in such a chair position in a generally horizontal position on stop 28 with friction finger 130 and bolt 132 are disposed adjacent the lower end of the arcuate edge of the friction plate 120.

To the middle tilted back position of FIG To achieve this upright position, the seat occupant presses on the lower part 15 of the back support to the rear to cause the seat and back support structure, to bend in substantially backward directions relative to / to the chair frame 18, by means of the mutually coordinated Shiuing flexures of the primary articular joint 38, the secondary Swivel joint and the tertiary pivot joint 46, as well as the drive joint 66, each on its respective Schiuen kp points.

By attaching the seat and the backrest in this way is the body supporting member from the upright or sitting position of Fig. 1 to the positions of Fig. 2 and 3 and / or any position in between can be moved and of course vice versa «

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In the course of the movement from the upright position in a tilted back position and with the leg rest extended, the swivel joints 38, 44 and 46 and the drive joint 66, soiüie the actuating joints 56 and 58 coincide in a counter-clockwise direction (as seen in Fig. 1), simultaneously with the movement of the seat- holder 30 and seat 12.

The tertiary pivot joint 46 is twisted, twisted the drive link 66 also moves to push the primary actuation link 56 forward and upward, which in turn the tertiary operating hinge 74 pushes forward and upward, thereby causing a corresponding movement of the secondary Actuating hinge 58 and the primary lifting hinge 82 to cause, whereby the larger leg support plate 86 and the larger leg support portion 52 can be excited toward a generally horizontal position.

Likewise, when the tertiary actuation joint 74 is rotated, rotation is imparted to the secondary lifting joint 90, whereby the control joints 96 and 104 are moved forward and outward to push the smaller leg support plate 100, at 102 relative to the larger leg support plate 86.

A smooth rocking motion of the smaller leg support plate 100

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is ensured by the secondary steering joint 104, which works to force forward movement of the primary control joint 96 and the smaller leg support plate 100 in axial alignment with the larger legrest plate 86, with the larger legrest part 52 and the smaller leg support portion 54 are brought and grounded in axial alignment with one another to form a unit the chair is in a middle reclined position, as illustrated for example in FIG. 2, or in βϊπβγ fully reclined position, as illustrated for example in FIG. 3.

In Fig. 2 it can be seen that the lifting rod 64 their in general by the sequence of movements just described have not changed the horizontal position relative to the base holder 20 and will continue on the stop 28 to lie, even if the leg support member is now fully extended, so that the larger leg support plate 86 and the smaller leg support plate 100 are axially aligned.

It should be noted here that the seat occupant, if he so wished, the body-supporting component in any inclined position between the positions of Fig. 1 and Fig. 2 may have attached, with a simultaneous partial extension of the leg support 50, wherein adequate leg support through the larger leg

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support part 52 is provided.

In order to achieve the fully reclined position of FIG. 3 from the inclined position of FIG. 2, the Apply additional backward pressure to the seat occupant to press on the lower part 15 of the backrest by pushing it with your hands on the frame 10 of the chair, ujorauf the front end of the lifting rod 64 through the tertiary Swivel joint 46 via the Schiuenkverbindungs 62 upwards pressed u / ird to cause the lifting bar on your to swing rear end on their pivot point 116.

If the lower part 15 of the backrest is adjusted further in angle, the seat 12 and the seat holder 3G are ^{pressed backwards and upwards by the foot part 32 1 of} the L-joint 32 via their pivot connection 36.

UIf the seat holder 30 moves backwards and upwards, the lower end of the hinge part 138 of the friction plate 120 via its pivot connection 140 through the secondary Pivot 44 pushed upward, whereupon the friction plate 120 is on its pivot point 122 relative to the lifting rod 64 will pivot until the flange 126 of the friction plate is in the recess 128 in the top edge of the lift bar will intervene, whereupon further rotation of the friction plate 120 is prevented, the chair now the

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v / has reached the fully reclined position.

In the course of the movement from the upright position to a reclined position, with the upper part 16 of the backrest extended, the seat joint 180 is rotated in a clockwise direction by the drive link, as shown in the drawings, with the seat joint in turn first on the connecting hinge 166 pushes to pivot it in a clockwise direction, thereby pushing the support plate 152 to move backward and upward by means of the pivot hinges 154 and 160 relative to the L-hinge 32 to swing.

Such rocking motion of the support plate 152 continues when the chair is reclined to move the top 16 of the backrest up to a desired position, wherein upon reaching the central reclined position of FIG Upper edge of the lower part 15 of the backrest is arranged.

Upon reaching the intermediate reclined position an edge of the first Festdßllgelenkes 166 engages the second stop 190 on the support plate 152 to exclude a crossing of the first fixing joint 166 and the second fixing joint 170, so those joints a

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Assume locked or locked position to the movement of the upper part 16 of the backrest on a
To prevent desired limit out when the chair reaches the reclined position of FIG.

During the movement of the chair from the middle position to the fully reclined position, the upper part of the backrest remains in an extended position,
above the lower part of the backrest, if a locked component or a component that is locked in position simply swings with the L-joint 32 when the component supporting the body is tilted back and is held by locking joints 170 and 170, whereby the locking is limited by the stop 190 will"

At the same time remains at B _buje g _{Un it} gd chair from the fully reclined position to the middle back inclined position of the lower part of the back support again as a locked by the parking joints 166 and 170 firmly seized in position component, wherein the determination by the stop 190 limits is.

When the chair is moved from the middle position to the upright position, the support plate 152 moves pivoted down in the opposite direction to bring the upper part of the backrest into a retracted position in the

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Bring back the lower part of the backrest.

It will be understood that although the two-piece backrest and its actuating arrangement is illustrated, the FIGS
Connection to a specific hinge works to prevent reclining of the chair and extension of the leg support, any suitable mechanism for effecting such reclining and extension of the leg support
can take its place.

Claims

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Claims (4)

Claims 1./Adjustable armchair, marked by : a frame (10) a body support member movably mounted on the frame (10) for placement between reclined and seated positions and including a seat (12) and a two-piece back support (14) having a top (16) and a bottom (15 ) having, a legrest (50) attached to the body supporting member for locating between extended and retracted positions, Pivot joints which attach the upper part (16) of the backrest (14) for advancement from a retracted position in the lower part (15) of the backrest, into an extended applicable position and for retraction from the extended applicable position to the retracted position, an arrangement that automatically actuates the joints when the body-receiving component moves between the seated position and the reclined position, and upon movement of the leg support (50) between retracted and extended positions, 409837/0233 -23- where the joints have a combined outward, upward and advancing the top (16) of the back support (14) provide that the upper part (16) of the backrest forward in working relation with the supporting surface of the lower part of the backrest brings when the body-supporting component leans back and the legrest is extended and a combined backward, downward and forward movement Provide the upper part (16) of the back support, as well as returning the upper part (16) of the backrest to the rear into the retracted position in the lower part (15) the back support when the chair is returned to its upright position. 2. Adjustable armchair, characterized by: A fixed frame and one that supports the body Component comprising a seat (12) and a two-part back support (14), the one supporting the body Component is attached to the stationary frame, for placement between an upright sitting position and a middle reclined position and a fully reclined position and reclined positions between, the two-piece back support operably connected upper - 24 - 409837/0233 and lower back support members (15, 16) including a leg support (50) resting on the body support member is attached for movement between retracted and extended positions, an arrangement for bending the legrest together with the Movement of the component supporting the body, an arrangement for advancing the upper part (16) of the Back support from a retracted position in the lower part (15) of the back support into an extended position the lower part of the back support lying position when moving the component supporting the body upright sitting position in the middle reclined position and for holding the upper part of the backrest in extended position during the movement of the body supporting component between the middle and υοΐΐ-constantly reclined position and the reclined positions in between and for bringing back the top the backrest in the retracted position when moving from the middle reclined position to the upright sitting position, wherein the assembly for moving the top of the back support includes a hinge operable with the top the backrest is connected, a lever pivotably connected to the hinge and the seat, - 25 - 409837/0233 and a drive member pivotally connected to the lever and the frame for guiding the top of the Back support in a generally curved direction as it moves relative to the base of the back support. 3 "l / reclining chair, marked by : a stationary frame (10), a body support member that includes a seat (12) and a two-piece back support (14) that extends on attached to the frame, for placement between an upright sitting position, a middle reclined position Position, a fully reclined position and reclined positions in between, a legrest (50) mounted on the body support member for movement between retracted and extended positions, an arrangement for causing movement of the leg support (50) concurrently with movement of the body supporter Component, wherein the two-part back support is an Obeifceil (16) and a Has lower part (15), an actuator assembly that includes the top and bottom - 26 - 409837/0233 attached to the backrest, for advancing from a retracted position in the lower part of the backrest to an extended position above and to return of the upper part of the backrest from the extended position into the retracted position, this being done automatically when the body-supporting component is pivoted between the upright sitting position and the reclined position in between and for holding of the upper part of the backrest in the extended position during movement between the middle and full reclined position, wherein the actuator assembly is connected to the frame and includes a drive member pivotally mounted thereon, a first joint member operable with the upper the backrest is connected and a connection between the drive member, the first joint member and the seat, 4. Adjustable armchair, characterized by: a stationary frame (10), a body support member including a seat (12) and a two-piece back support (14), the the body supporting component pivotable on the frame - 27 - 409837/0233 is attached, for placement between an upright seated Position, an intermediate reclined position, a fully reclined position, and reclined positions in between, the two-part back support (14), articulated upper and contains lower back support parts (16, 15), an arrangement that allows the top (16) of the back support to move relative to the bottom (15) of the back support attached, between a retracted position in the lower part of the backrest and an extended position from the lower part of the backrest to the outside, which happens automatically when the person supporting the body is pivoted Component between one of the seated and reclined positions, being the arrangement covering the top of the back support attached, is united with the frame and a drive member contains, which is pivotably mounted on it, a Feststallgalenk between the upper part and the lower part of the Back support, and a connection between the seat, the drive member and the Featstellgienk, where the feather joint is the upper part and the lower part of the Back brace locks against movement relative to each other, during the movement of the component supporting the body between the middle and fully reclined position. 409837/0233 Blank page