RU2437605C2 - Armchair with rocking back - Google Patents

Armchair with rocking back Download PDF

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Publication number
RU2437605C2
RU2437605C2 RU2009149691/12A RU2009149691A RU2437605C2 RU 2437605 C2 RU2437605 C2 RU 2437605C2 RU 2009149691/12 A RU2009149691/12 A RU 2009149691/12A RU 2009149691 A RU2009149691 A RU 2009149691A RU 2437605 C2 RU2437605 C2 RU 2437605C2
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RU
Russia
Prior art keywords
support
seat
back
position
backrest
Prior art date
Application number
RU2009149691/12A
Other languages
Russian (ru)
Other versions
RU2009149691A (en
Inventor
Фабио МАЛЕНОТТИ (IT)
Фабио МАЛЕНОТТИ
Original Assignee
Маленотти С.Р.Л.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to ITTO20070398 priority Critical patent/ITTO20070398A1/en
Priority to ITTO2007A000398 priority
Application filed by Маленотти С.Р.Л. filed Critical Маленотти С.Р.Л.
Publication of RU2009149691A publication Critical patent/RU2009149691A/en
Application granted granted Critical
Publication of RU2437605C2 publication Critical patent/RU2437605C2/en

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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03255Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest with a central column, e.g. rocking office chairs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03266Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with adjustable elasticity
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03261Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means
    • A47C1/03272Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest characterised by elastic means with coil springs
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C1/00Chairs adapted for special purposes
    • A47C1/02Reclining or easy chairs
    • A47C1/031Reclining or easy chairs having coupled concurrently adjustable supporting parts
    • A47C1/032Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest
    • A47C1/03294Reclining or easy chairs having coupled concurrently adjustable supporting parts the parts being movably-coupled seat and back-rest slidingly movable in the base frame, e.g. by rollers

Abstract

FIELD: personal use articles.
SUBSTANCE: invention relates to an armchair with a rocking back. The armchair comprises a support structure, a seat, a back with a support and an elastic facility. The seat is connected with a support structure by means of a joint in the form of a hingedly joined parallelogram that includes the first arm and the second arm, to ensure movement of the seat between the lowered position and the raised position. The back is installed so that it could slide between the vertical position and the position inclined backwards. Movement of the back into the backward inclined position causes seat displacement into the raised position and vice versa. The elastic facility tries to return the seat into the lowered position, and the back - into the vertical position. The seat is carried by a sliding support installed so that the inclination of the seat support backwards causes lowering of the sliding support, on which the seat is installed, relative to the seat support. The first hinged arm continues beyond its hinged axis above the fixed support structure and ends with the back end, being hingedly connected to the back support, which is hingedly connected around the transverse axis with the seat support.
EFFECT: invention is aimed at more convenient arrangement of a user in any possible position occupied by the armchair, and at convenience of seat position adjustment.
13 cl, 9 dwg

Description

The present invention relates to an armchair of this type, which comprises a support structure; a seat having a support connected to the support structure by means of an articulated parallelogram connection including at least one first shoulder and one second shoulder, each of which is pivotally connected to both the seat support and the support structure, due to wherein the seat can be moved between the lowered position and the raised position;

a backrest having a support mounted with the possibility of swinging between the actually vertical position and the backward deflected position, the backrest support being operatively connected to the seat support in such a way that moving the backrest to the deflected position causes the seat to move to the raised position, and vice versa, the backrest will be rejected upright by means of a force at least partially dependent on the weight of the person sitting on the seat;

elastic means installed between the support structure and one of the first and second shoulders or the seat support, which tends to deflect the seat to the lowered position and the backrest to the vertical position.

The chair of the type defined above is described and presented in document No. EP-A-0249584. This well-known solution presents the advantage of providing a certain type of automatic control of the force, which tends to deflect the backrest in a vertical position, respectively, to the person holding the chair. This feature is usually an important requirement for reclining seats. Many chairs designed for office use are equipped with a manually adjustable adjusting device that allows the user to adjust the force tending to deflect the backrest to a vertical position, and this force, in general, as indicated, should be greater, the greater the weight of the person occupying armchair. In the case of armchairs for “public places,” for example armchairs intended for use in conference rooms, auditoriums, theaters, and the like, it is obvious that it is impossible to provide a manual adjusting device as a result of contrasting its cost with the requirements of simplicity and low production costs, which are characteristics of seats of this type, and due to the impracticability of the fact that each new user of the chair will be able to perform the regulation action in accordance with his own weight. The chair presented in document EP-A-0249584 solves the aforementioned problem in such a way that each new chair user automatically creates such a force to return the chair to a vertical position, which is a function of the person’s weight.

From JP 2007-54152 A1, a chair is known comprising a support structure; a seat having a support connected to the support structure by means of an articulated parallelogram connection including at least one first shoulder and at least one second shoulder, each of which is pivotally connected to the seat support and to the support structure to ensure movement of the seat between the lowered position and the raised position; a backrest with a support installed so that it can slide between a substantially vertical position and a position deflected backward, the backrest being functionally connected to the seat support in such a way that moving the backrest to the backward inclined position causes the seat to move to the raised position, and vice versa so that the back will be deflected to its vertical position by a force at least partially dependent on the weight of the person sitting on the seat; resilient means operably installed between the support structure and the first articulated shoulder or the second articulated shoulder or backrest support, which tends to return the seat to the lowered position and the backrest to a vertical position; wherein the seat carries a sliding support mounted in such a way that it can slide on the seat support in the longitudinal direction, and the sliding support is functionally connected to the back support in such a way that tilting the back support back causes the sliding support on which the seat is mounted to be lowered, with respect to the seat support, connected by means of a system in the form of an articulated parallelogram with a fixed support structure.

The purpose of the present invention is to further improve such a known chair with the addition to the advantageous characteristics described above of additional characteristics that are preferable in terms of ergonomics and create comfort for the user.

To achieve this goal, the subject invention is a chair in which, according to the invention, the first articulated shoulder is extended beyond its articulated axis above the fixed supporting structure and ends with a rear end articulated around the transverse axis with the backrest, the latter being further articulated around the transverse axis with seat support.

Thanks to the mentioned characteristics, when a person sitting in a chair leans against the back, causing it to deviate back, then, as in the case of a known solution, the force will be created to return the back to its vertical position depending on the person’s weight, but at the same time in this In this case, the seat also lowers, which ensures that the distance between the contact zones of the body of the occupant of the chair, the seat and the back is practically unchanged when the backrest is tilted so as to prevent or reduce the movement a significant slip of the back and back of a seated person. In the case of known armchairs, instead of what is indicated, there is a tendency to increase this distance when the backrest tends to increase, as a result of which this armchair “undresses” the one who sits in it, in the sense that there is a tendency for his shirt to slip out of his trousers on the back.

Other preferred characteristics of the chair according to the invention are defined in the attached claims.

The invention will now be described with reference to the accompanying drawings, which are given as an example only, not limiting, and in which:

figure 1 is a side view of an embodiment of the design of the chair according to the invention;

figure 2 and 3 is an enlarged view of a fragment according to figure 1, moreover, in two different operating conditions of the chair;

4 to 9 are, on an enlarged scale, schematic views of a fragment of a chair according to the invention in different operating states.

In figure 1, the chair as a whole is indicated by 1, while the chair, in particular, is intended for use in "public places". In any case, the invention can also be applied to armchairs intended for other purposes, for example, as armchairs for offices or armchairs for residential premises.

Chair 1 contains a seat 2 and a backrest 3, held in a manner that will be described in detail below, on the base structure 4.

In the example shown, the base structure 4 is a structure of this type, which contains one central vertical column 5 of this type, which contains a gas spring for adjusting the seat height, while its lower end extends into the housing provided in the center of the support 6 containing a large number of legs 7, which end with the turning wheels 8. At the upper end of the rod 9 of the gas spring connected to the column 5, a support box 10 is installed, made, for example, of a metal material.

In this description, the terms “longitudinal” and “longitudinally” are used in relation to the actually horizontal direction parallel to the vertical plane of symmetry of the chair indicated by arrow A in FIG. In the same way, the expression “transverse” and “transverse” is used with respect to the direction horizontal and perpendicular to the vertical plane of symmetry of the chair, that is, the direction perpendicular to the plane according to FIG.

In the case of the present invention, the seat 2 carries a sliding structure 2a that is mounted in such a way that it can slide in a direction substantially parallel to the longitudinal direction A on the seat support 2b. The seat support 2b, in turn, is connected to the support box 10 through a system in the form of an articulated parallelogram, which in the illustrated embodiment includes two front articulated arms 11 and one rear articulated arm 12. Two front articulated arms 11 are located on two sides of the box 10 and pivotally connected around the transverse axis 13 to the seat support 2b and around the transverse axis 14 to the support box 10. The rear articulated arm 12 is pivotally connected around the transverse axis 15 to the seat support 2b and the wok yz a transverse axis 16 to the supporting box 10.

As shown in FIGS. 2 and 3, the backrest 3 of the chair according to the invention is held by a support 17, in the example shown, formed by a shoulder that holds the backrest panel 3 at one end and is branched into two branches 17a at the opposite end (only visible in the drawings one of them), the ends of which are pivotally mounted around the aforementioned transverse axis 15 on the seat support 2b. Each of the two front articulated arms 11 is extended from the lateral side of the support box 10 by the articulated axis 14 up to the articulated bracket 18. The articulated bracket 18 is pivotally connected around the axis 19 (see FIGS. 2 and 3) with the supporting arm 17 of the backrest 3, and also connected around the axis 20 at both of the rear ends of the two articulated arms 11. Two side arms 11 are also connected to each other by means of a transverse pin 21, which engages with an arcuate slot 22 made in each side wall of the box 10. Finally, the knee-shaped shoulder 23 has one end, articulated connected around the axis 20 to the bracket 18, and its opposite end is pivotally connected around the transverse axis 24 to the sliding support 2a of the seat.

In this description and in the attached drawings, the characteristic design of each of the panels of the seat 2 and back 3 is not presented, since it can be obtained by any known method and therefore does not fall within the scope of the present invention.

As shown in FIG. 4, a transverse pin 21 connected to two articulated shoulders 11 carries a cover 25 on its upper end which is supported by a coil spring 26, the axis of which is indicated by 27 and which is mounted inside the support box 10 and is supported by its lower end on the bottom wall of the box. The spring 26 tends to deflect the finger 21 in the direction of the maximum lifting position, in which the finger 21 is in contact with the upper end of each of the slots 22 made in the box 10. Since the finger 21 is held by two articulated arms 11, the maximum lifting position of the finger 21 corresponds to the maximum forward rotation of the articulated arms 11 and, therefore, of the rear articulated arm 12, which together with the arms 11 forms a system in the form of an articulated parallelogram that connects the seat support 2b to polar box 10. Said state is represented in Figure 2, while it corresponds to the position, took a seat and a backrest, when the chair is unoccupied, or even if it is busy, but the person occupying the chair, does not create pressure on the back. Therefore, in the resting state of the chair, which is shown in FIG. 2, the axis 20 for connecting the rear ends of the articulated arms 11 with the bracket 18 is in its maximum lift position, which, through the bracket 18, determines the position of the maximum forward rotation of the support arm 17 of the backrest 3. How can see, the device is such that in the said state, the backrest 3 is actually in a vertical position. Once again, it should be noted that in the aforementioned resting state, the sliding support 2a is in the position of maximum advancement in the longitudinal direction A with respect to the seat support 2b.

If, starting from the rest state shown in Figs. 1 and 2, a person sitting on the seat 2 rests his back on the back 3, exerting pressure on it, which tends to cause it to deviate in the back direction, such a deviation in the back direction of the support arm 17 of the backrest causes an upward deflection (counterclockwise, as seen in FIGS. 1-3) of the articulated arms 11, 12, since the support 17 moves in such a way as to displace its articulated axis 15 upward. Consequently, the backward movement of the back with an inclination leads to the raising of the seat 2. This movement should be less opposed by the spring 26, which is compressed, following the displacement in the lower direction of the finger 21 in the slots 22, and to a predominantly weight of the person sitting in the chair. The weight of the person actually tends to cause the hinged shoulders 11, 12 to turn down (in a clockwise direction, if you look at figure 1, 3), followed by turning the back up (in a clockwise direction). Consequently, the person occupying the chair, exerting pressure on the back in the rear direction, experiences a resistance force that tends to deflect the back to a vertical position, which is a function of the weight of the seated person. Thus, the chair according to the invention differs from this point of view, as has already been worked out in document No. EP-A-0249584, in the type of automatic control of the force, which deflects the backrest in a vertical position in accordance with the weight of the seated person. The requirements of comfort and ergonomics actually make it necessary for a heavier person to experience a greater reaction from the back, tracking backward movement.

The main characteristic of the novelty according to the invention is that during the backward movement of the back with an inclination, the shoulder 23 will move, causing the lowering of the sliding seat support 2a in relation to the seat support 2b. Therefore, in the chair according to the invention, when the person occupying it rests on the back, causing it to deviate backward, the seat rises and lowers, so that the distance between the contact areas of the body of the seated person with the seat and the back remains virtually unchanged. The mentioned aspect provides a significant difference in relation to the known armchairs of this type with a back that can be tilted back so that the back is turned back with a simultaneous upward movement of this back at the back of a seated person, therefore, if you use the jargon, usually used in this area , the chair "undresses" the sitting man, that is, his shirt slips out of his trousers at the back. Since the backward movement of the backrest in the chair according to the invention causes both the raising and lowering of the body of the seated person, the aforementioned relative sliding movement between the back of the chair and the back is virtually eliminated or at least significantly reduced, resulting in greater comfort for the user.

As shown in FIGS. 4-9, an auxiliary assembly 28 is mounted on the transverse finger 21, including a housing 29 mounted on the finger 21 and attached to the stem 30, on which the cylindrical housing 31 provided with the end head 32 is slideably mounted. Between a spiral spring 33 is mounted in the axial direction with the head 32 of the cylindrical body 31 and the support 34 of the body 29. It should be noted that the auxiliary unit 28, including the body 29, the spring 33 and the sliding cylinder 31, are installed in a plane at a distance along the axis the transverse finger 21 from the plane in which the axis 27 of the spring 26 is located to prevent any collision between the spring 26 and the spring 33.

Auxiliary unit 28 can be rotated around axis 21 so as to provide three different operating positions, respectively presented in Figs. 4, 6 and 8. The operating position for auxiliary unit 28 is selected by means of a selector element 35, which is set so that it can be rotated around an axis 36 at the front of the support box 10, while it can be rotated around the axis 36 using a drive lever (not shown) provided on the side of the box 10 under the seat.

Axis 36 coincides with axis 14. On one side of the chair in the position corresponding to axis 14/36, there is a drive lever of the selector element 35, while on the other side of the chair is a conventional drive lever of the gas spring 9.

The selector element 35 has a spout 37 designed to resiliently connect to any of the three seats 38a, 38b, 38c defined by an elastic element formed by a shaped strip made of plastic and having a cross section with a configuration similar to a closed loop. By tracking the rotation transmitted through the aforementioned lever on the selector element 35, the spout 37 may engage with one of three seats 38a, 38b, 38c. The rotation of the selector element 35 will be transmitted to the auxiliary unit 28 by means of a shaped metal wire 39, one end of which is attached to the radial additional part 40 of the selector element 35, and the other to the housing 29 of the auxiliary unit 28. The metal wire 39 is configured so that it can compensate changing the distance between the two points to which its ends are attached to select various operating positions of the auxiliary node. In addition, the device is such that it is possible to adjust the selector element 35 even when the chair is occupied and the back is tilted back so that the finger 21 is in the lowered position inside the corresponding slots 22. In the case when the choice is made when the finger 21 is in the lowered position position, the connecting wire 39 will be subjected to elastic deformation, tracking maneuvering when selected, and automatically provides a new location of the auxiliary node, as soon as the finger 21 returns to the raised position.

When the spout 37 of the selector element 35 is located inside the seat 38a of the spring element 38, the auxiliary unit 28 is in the position shown in Fig.4. In this state, the spring 33 does not perform any function and tilting the backrest back causes the lowering of the finger 21 opposite to the action of the spring 26, and also, as can be seen, opposite to the action occurring due to the weight of the person occupying the seat (see FIG. 5).

When the selector element 35 is in the position shown in FIG. 6, with the spout 37 engaged with the seat 38b of the spring element 38, the selector element 28 is in such a position that the tooth 41 carried by the structure of the support box 10 directly enters in contact with the surface of the housing 28, while preventing the finger 21 from moving downward. Therefore, in this state, the back of the chair will be locked so that it cannot be tilted back. It should be noted that instead, in the state shown in FIG. 4, the tooth 41 does not collide with the housing 29 of the auxiliary unit 28 and will enter the cavity (not shown) made in the housing 29. As already mentioned, therefore, in the state presented in Fig.6, it is impossible to tilt the back back with tracking contact with the tooth 41 (see Fig.7).

If the selector element 35 is brought to the position shown in Fig. 8, the head 32 of the cylindrical body 31 extends to support the seat 42 made on the bottom of the support box 10, so that when the back is tilted back, the subsequent lowering of the finger 21 causes compression of the spring 26, and the lowering of the housing 29, as well as the sliding of the rod 30 inside the cylindrical housing 31, followed by compression of the coil spring 33. Therefore, in the said state, the spring 33 complements the spring 26 when creating an action against false back moving rearwardly. The specified option can be selected in the case of a very difficult user, requiring the application of a force opposite to the back, which one spring 26 cannot provide.

Therefore, as you can see, the chair according to the invention, along with ensuring the proper movement of the body of the person who occupies it, during the movement of the backrest deflection also provides the ability to select a number of different working conditions so as to meet different user requirements.

In addition, as can be seen in the attached drawings, the backward movement of the backrest also causes the seat to rise, which, however, also occurs with a slight tilt of the seat backward (to an insignificant degree with respect to the backrest) so as to provide maximum comfort for the user.

An additional useful feature of the chair according to the invention is that all the mechanisms forming part of the seat and back support structure are enclosed in a support box, inter alia, including an auxiliary unit 28 with an auxiliary spring 33, which can assist the main spring 26 to generate force backrest reactions when this is desired.

In addition, the relative location of the various axles of articulation of the articulated arms forming the supporting structure of the seat and backrest is chosen in such a way as to provide maximum comfort to the user. In addition, the use of connecting rod elements, such as a bracket 18 or a rear articulated arm 12, instead of more traditional joints with a finger and a slot provides an improvement in terms of reducing friction.

Of course, without neglecting the principle of the invention, the construction details and embodiments of the invention can be greatly expanded with respect to what is described and presented here only as an example, but without deviating from the scope of the present invention.

Claims (13)

1. Armchair (1), containing:
supporting structure (4);
a seat (2) having a support (2b) connected to the support structure (4, 10) by connecting (11, 12) in the form of an articulated parallelogram including at least one first shoulder (11) and, according to at least one second shoulder (12), each of which is pivotally connected to the seat support (2b) and to the support structure (10) to provide movement of the seat between the lowered position and the raised position;
a backrest (3) with a support (17) mounted so that it can slide between a substantially vertical position and a position deflected backward, while the backrest support (17) is operatively connected to the seat support (2b) so that the movement the backrest (3) in the backward inclined position causes the seat (2) to move to the raised position and vice versa, so that the backrest will be deflected into its vertical position by a force at least partially dependent on the weight of the person sitting on the seat (2);
elastic means (26) functionally installed between the support structure (10) and the first hinge arm (11) or the second hinge arm (12), or the backrest support (17), which tends to return the seat (2) to the lowered position and backrest (3 ) - in a vertical position;
wherein the seat (2) carries a sliding support (2a) mounted in such a way that it can slide on the seat support (2b) in the longitudinal direction, and the sliding support (2a) is functionally connected to the back support (17) in such a way that the inclination of the back support (17) back causes the sliding support (2a), on which the seat (2) is mounted, to lower the seat support (2b), connected by means of a system in the form of an articulated parallelogram with a fixed supporting structure (10), characterized in that the first articulated shoulder (11 ) extends beyond its hinge axis (14) above the fixed supporting structure (10) and ends with a rear end pivotally connected around the transverse axis (19, 20) with the back support (17), the latter being further pivotally connected around the transverse axis (15) ) with seat support (2b).
2. The chair according to claim 1, characterized in that the part of the first articulated shoulder (11), which is further extended beyond its articulated axis (14) above the fixed supporting structure (10), bears a transverse finger (21), which is given the direction in the slot (22) in the fixed support structure (10), and which presses on the return spring (26) installed between the transverse pin (21) and the fixed support structure (10).
3. The chair according to claim 1, characterized in that the backrest support (17) is also connected to the sliding support (2a) by means of an articulated arm (23).
4. Chair according to claim 1, characterized in that the rear end of the first articulated shoulder (11) is pivotally connected around the transverse axis (20) with an element (18) in the form of a bracket, the opposite end of which is pivotally connected around the transverse axis (19) above the support (17) backrests.
5. Chair according to claim 2, characterized in that the rear end of the first articulated shoulder (11) is pivotally connected around the transverse axis (20) with an element (18) in the form of a bracket, the opposite end of which is pivotally connected around the transverse axis (19) above the support (17) the backrest, and the fact that the hinge arm (23) that connects the backrest support (17) to the sliding support (2a) is pivotally connected around the transverse axis (20) on the element (18) in the form of a bracket.
6. The chair according to claim 1, characterized in that the first and second articulated shoulders (11, 12) are given such a configuration, and they are arranged in such a way that their upward rotation causes a slight inclination of the seat (2) back.
7. The chair according to claim 1, characterized in that the part of the stationary supporting structure to which the first and second articulated arms are pivotally connected (11, 12) has the shape of a box in which at least one guide slot (22) is made for the transverse pin (21) carried by the first articulated shoulder (11), while the box contains a spring (26) mounted between the fixed structure and the transverse pin (21).
8. The chair according to claim 7, characterized in that the first two articulated shoulders (11, 12) are provided, pivotally attached to the two sides of the support box (10) and connected by a transverse finger (21), which engages with two guide slots (22) made in the two sides of the box (10).
9. A chair according to claim 1, characterized in that the backrest support (17) is formed by a shoulder having one end connected to the backrest (3) and an opposite end that branches to two shoulders (17a), the ends of which are pivotally connected around a common transverse axis (15) with seat support (2b).
10. Chair according to claim 1, characterized in that an auxiliary unit (28) is connected to the fixed supporting structure (10), which can be selectively installed in the first position for the usual position of the chair, or in the second position in which it prevents the backrest from tilting back, or in the third position, in which the auxiliary elastic means (33), forming part of the auxiliary node (28), determines the additional reaction force, which is opposite to the movement of the back with a deviation back.
11. Chair according to claim 10, characterized in that the auxiliary unit is installed so that it can rotate around the axis of the transverse finger (21), rigidly connected to the first articulated shoulder, which causes the deformation of the first elastic means (26) associated with the stationary supporting structure of the chair, tracking backward deviation of the back.
12. Chair according to claim 11, characterized in that the auxiliary unit (28) has different operating positions around the axis of the transverse finger (21), and in that the operating position of the auxiliary unit (28) can be selected by means of a selector element (35), installed in such a way that it can rotate around the transverse axis (36) on the fixed supporting structure of the chair.
13. The chair according to claim 1, characterized in that the auxiliary elastic means is designed in the form of a spiral spring (33), which can be oriented together with the auxiliary node (28) around the axis of the transverse finger (21), and that in one of operating positions, a spring (33) is installed between the fixed supporting structure of the chair and the transverse finger (21) so as to respond to the movement of the chair tilt back.
RU2009149691/12A 2007-06-06 2008-06-05 Armchair with rocking back RU2437605C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ITTO20070398 ITTO20070398A1 (en) 2007-06-06 2007-06-06 "Chair with an oscillating backrest"
ITTO2007A000398 2007-06-06

Publications (2)

Publication Number Publication Date
RU2009149691A RU2009149691A (en) 2011-07-20
RU2437605C2 true RU2437605C2 (en) 2011-12-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2009149691/12A RU2437605C2 (en) 2007-06-06 2008-06-05 Armchair with rocking back

Country Status (10)

Country Link
US (1) US20100164263A1 (en)
EP (1) EP2139365B1 (en)
JP (1) JP2010528749A (en)
CN (1) CN101715310A (en)
AT (1) AT493048T (en)
BR (1) BRPI0812312A2 (en)
DE (1) DE602008004231D1 (en)
IT (1) ITTO20070398A1 (en)
RU (1) RU2437605C2 (en)
WO (1) WO2008149224A1 (en)

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WO2008149224A1 (en) 2008-12-11
ITTO20070398A1 (en) 2008-12-07
CN101715310A (en) 2010-05-26
JP2010528749A (en) 2010-08-26
AT493048T (en) 2011-01-15
RU2009149691A (en) 2011-07-20
DE602008004231D1 (en) 2011-02-10
US20100164263A1 (en) 2010-07-01
BRPI0812312A2 (en) 2014-11-25
EP2139365B1 (en) 2010-12-29

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