WO2023156098A1

WO2023156098A1 - Seat unit and vehicle comprising a seat unit

Info

Publication number: WO2023156098A1
Application number: PCT/EP2023/050819
Authority: WO
Inventors: Benno Schiefer
Original assignee: Siemens Mobility GmbH
Priority date: 2022-02-15
Filing date: 2023-01-16
Publication date: 2023-08-24
Also published as: EP4444576A1

Abstract

The invention relates, inter alia, to a seat unit having a pivot axis (S), about which at least one body support part (210) of the seat unit (20-23) can be pivoted. According to the invention, the pivot axis (S) is formed by an elongate carrier element (200) which is pushed with a carrier element end (202) onto or into a connection section (242) of a wall connection flange (240) suitable for fastening to a carrier wall.

Description

Seat unit and vehicle with seat unit

The invention relates to a seat unit with a pivot axis about which at least one body support part of the seat unit can be pivoted.

Seat units with pivot axes are described, for example, in the German utility model specification DE 20 2008 017 742 U1 and the international patent application WO 2008/144651 A1.

The invention is based on the object of specifying a seat unit with a pivot axis which can be used particularly advantageously in local passenger transport, for example.

This object is achieved according to the invention by a seat unit with the features according to patent claim 1 . Advantageous configurations of the seat unit are specified in the dependent claims.

According to the invention, it is provided that the pivot axis is formed by an elongate support element, which is pushed onto or pushed in with one end of the support element onto a connection section of a wall connection flange suitable for attachment to a support wall.

A significant advantage of the seat unit according to the invention is based on the insertion or sliding of the support element in or on the wall connection flange. Pushing in or pushing on results in an axial overlapping of the support element and wall connection flange and thus in a permanently mechanically stable connection to the support wall. A connection alone of the end face of the support element to the support wall or to a non-flange wall connection part, for example by a circumferential weld, as the inventors found, with permanent Mechanically aging very quickly under load and may tear under certain circumstances. This is particularly problematic when the seat unit is used in local passenger transport; This is due, among other things, to peak forces that can occur, for example, if heavy people do not see the seat unit. This is where the invention comes in, in that it provides an interface with an axial overlapping area, which is formed by sliding the support element end and the wall connection flange into one another.

It is advantageous if the wall connection flange has a wall connection section for resting on and attachment to the support wall. In addition, the wall connection flange preferably has a connection section which is integrally formed onto the wall connection section and extends perpendicularly away from the wall connection section—and thus perpendicularly from the support wall after assembly.

The connection section is preferably nozzle-shaped or designed as a connecting piece and suitable for receiving the carrier element by pushing it on or in.

Sliding on or in preferably takes place along the pivot axis about which the body support part of the seat unit can be pivoted.

In a preferred embodiment it is provided that the connection section is cylindrical.

In another preferred embodiment, it is provided that the connection section is conical and tapers outwards from the cross-section in the direction away from the wall connection section. In the case of such a configuration, the carrier element is preferably pushed on and thereby clamped on the connection section. In yet another preferred embodiment, it is provided that the connection section is hollow and conical on the inside and increases in cross section—in the direction away from the wall connection section. In the case of such an embodiment, the carrier element is preferably pushed in and thereby clamped to the connection section on the inside.

In order to prevent the carrier element from slipping axially on the connection section, it is considered advantageous if the end of the carrier element is shrunk, pressed or glued onto the connection section.

In order to avoid rotational twisting of the support element on the connection section, it is considered advantageous if the support element end is secured against rotational rotation by a non-rotationally symmetrical cross section of the support element end and a matching non-rotationally symmetrical cross section of the connection section.

Moreover, it is considered advantageous if the support element is cylindrical, regardless of the specific shape of the support element in cross section.

It is particularly advantageous if the end of the support element is secured against both axial displacement and rotary rotation by a form fit, preferably by at least one connecting element extending radially from the outside through the connection section in the direction of the support element. Such a connecting element can be formed by a screw, a bolt or a rivet.

It is particularly advantageous if the wall connection flange is formed by a one-piece molded piece, in particular a cast piece or a milled molded part. Such a one-piece design enables a particularly stable transition area between the wall connection section and the connection final section, so that it can be ensured in a particularly simple manner that the connection section is held securely and permanently by the wall connection section even if the seat unit is used in local passenger transport and if the force peaks mentioned occur.

The carrier element is preferably an extruded profile part.

The carrier element is preferably a tube and particularly preferably a tube with a non-circular cross-sectional contour.

The connection section integrally formed on the wall connection flange is preferably a connecting piece onto which the pipe is pushed.

The seat unit is preferably a sit-stand unit.

The body support part of the seat unit is preferably in a leaning position in which leaning against the body support part is possible, but the body support part blocks sitting on the seat unit, and in a seat position in which both leaning against the body support part and sitting on the seat unit is possible , adjustable .

The seat unit is preferably equipped with an electrically operated fixing device that can be placed in a fixing position in which the fixing device blocks a pivoting movement of a rotatable part of the seat unit, and in a release position in which the fixing device releases the pivoting movement. An advantage of this configuration can be seen in the fact that the fixing device makes it possible to release or limit the operation of the seat unit, for example centrally and/or locally.

In a first particularly preferred embodiment of the seat unit, it is provided that the rotatable part is the body support part and the at least one fixing device a pivoting of the body support zteile blocks or releases about the pivot axis. If, for example when the seat unit is used in a local public transport vehicle, the vehicle is to provide a high passenger capacity in order to be able to transport as many passengers as possible, particularly at peak times, the fixing device can be used to prevent the body support part from pivoting. For example, the seat unit can be fixed in the leaning position by a central electrical control, for example from the driver's cab of the vehicle; This is particularly advantageous when the leaning position takes up less space than the sitting position.

The fixing device is preferably suitable for fixing the body support part at least in the leaning position, in particular with a view to saving space at peak times.

However, it is particularly advantageous if the fixing device is suitable for fixing the body support part both in the leaning position and in the sitting position. Fixing the seat position is advantageous during use of the seat unit in order to prevent a passenger sitting on the seat unit from being pushed off the seat unit if another passenger intentionally or unintentionally, for example due to abrupt speed changes, presses against the body support part or bumps and this pivots in the direction of the leaning position.

The body support part can preferably be pivoted from the leaning position along a first pivoting direction into a first sitting position and from the leaning position along a second pivoting direction, which is opposite to the first pivoting direction, into a second sitting position. The pivot axis is preferably formed by an elongate support element which is suitable for direct or indirect attachment to a support wall.

Viewed in cross section, the contour of the support element preferably comprises an arc of a circle which delimits an imaginary circle and on which a holding element of the body support part bears to guide a rotation of the body support part.

In addition, the contour of the carrier element preferably includes a contour area that extends radially inward and delimits a receiving space that extends axially along the longitudinal axis of the carrier element outside of the carrier element and within the imaginary circle.

In an advantageous embodiment, the fixing device is arranged in the receiving space, which is delimited by the contour area extending radially inward and the imaginary circle.

Alternatively or additionally, it can be provided that a cavity is present inside the carrier element. If there is a cavity, the fixing device can be arranged in the cavity.

It is advantageous if the fixing device has at least one blocking element which can be moved axially along the pivot axis and in its blocking position blocks the pivoting movement of the body support part by axial engagement and in its release position releases a pivoting movement of the body support part.

In the latter embodiment, it is advantageous if a first blocking element of the fixing device is axially movable along the pivot axis and in its blocking position both the pivoting movement of the body support zTeil from the leaning position to the first seated position and the Pivoting movement of the body support can block zteile from the first seated position in the leaning position.

A second blocking element of the fixing device is preferably also movable axially along the pivot axis and, in its blocking position, can block both the pivoting movement of the body support from the leaning position into the second sitting position and the backward pivoting movement of the body support from the second sitting position into the leaning position.

The first and second blocking element can be formed in an advantageous manner by tines of a fork-shaped carriage which is axially displaceable.

Alternatively or additionally, it can be provided that at least one blocking element of the fixing device is radially movable and is set radially outwards in the blocking position and a pivoting movement of the body support is partially blocked by radial action and is set radially inwards in the release position and the pivoting movement of the body support is partially releases by radial separation.

The body support part preferably comprises a backrest pivot, a backrest rotatable about the backrest pivot and a retaining element (for example in the form of a retaining arm) holding the backrest pivot and pivotable about the pivot axis.

In a further embodiment of the seat unit, it is provided that the rotatable part (or at least one of the rotatable line in the case of several rotatable parts) is the backrest of the body support part, which can rotate about the backrest axis of rotation. In the latter case, it is advantageous if the at least one fixing device blocks or enables pivoting of the backrest about the axis of rotation of the backrest. Fixing the backrest in the seating position is advantageous while the seat unit is being used in order to prevent a passenger sitting on the seat unit from being pushed off the seat unit if another passenger presses against the backrest intentionally or unintentionally, for example due to abrupt changes in speed or bumps and swings it.

The axis of rotation of the backrest is preferably formed by an elongate backrest support element, to which the backrest is pivotably attached.

A cavity is preferably present in the interior of the backrest support element. The fixing device can be arranged in the cavity or outside of the cavity.

It is advantageous if the fixing device has at least one blocking element which can be moved axially along the axis of rotation of the backrest and blocks the pivoting movement of the backrest by axial engagement in its blocking position and releases the pivoting movement of the backrest in its release position.

It is advantageous if the blocking element can be moved axially along the axis of rotation of the backrest and, in its blocking position, engages in an associated receiving slot in the backrest, depending on the pivoting position of the backrest.

In one embodiment that is considered to be particularly advantageous, at least three receiving slots are provided in the backrest, namely a middle one for vertical alignment of the backrest when the body support is in the leaning position, and one each for pivoted alignment of the body support partly (e.g. one receiving slot each for the first and second seat position).

Provision can also be made in an advantageous manner for at least one blocking element of the fixing device to be moved radially is borrowed and is placed radially outwards in the blocking position and the pivoting movement of the backrest is blocked by radial action and is placed radially inwards in the release position and releases the pivoting movement of the backrest by radial separation.

The blocking element or at least one of the blocking elements can work in a frictionally engaged manner and cause the pivoting movement to be blocked in the blocked position by frictional engagement.

Alternatively, it can be provided that the blocking element or at least one of the blocking elements works in a form-fitting manner and causes the pivoting movement to be blocked in the blocking position by means of a form-fitting connection.

The backrest support element is preferably a tube, in particular an extruded profile part.

In a variant considered to be particularly advantageous, it is provided that the seat unit has at least two fixing devices, with a first (lower) fixing device partially blocking or releasing pivoting of the body support about the pivot axis and a second (upper) fixing device pivoting a backrest of the body support part around a backrest axis of rotation blocks or releases.

The lower fixture preferably includes one or more features as detailed above. The lower fixing device preferably serves to block the leaning position if space is to be saved in a vehicle when the vehicle is heavily loaded. In the seat positions, it preferably serves to prevent the body support from swinging back into the leaning position when a passenger is sitting on the seat unit.

The upper fixture preferably includes one or more features as detailed above. The upper fixing device is preferably used to block the backrest when a passenger is sitting on the seat unit.

In the leaning position, the body support part is preferably arranged vertically above the seat portion of the seat unit and thereby blocks sitting on the seat portion.

In the seated position, a holding element of the body support that can be pivoted about the pivot axis is preferably pivoted by an angle of between 10° and 45° relative to the vertical.

When viewed vertically from above, the body support member and seat portion are preferably offset horizontally.

The space required by the seat unit—viewed from top to bottom vertically—is preferably smaller in the leaning position than in the sitting position.

It is advantageous if the seat unit has at least one sensor that can determine whether the seat unit is unloaded or loaded. The fixing device or the fixing devices preferably block pivoting of the body support partially about the pivot axis and/or pivoting of the backrest about the backrest rotation axis when the seat unit is loaded, in order to prevent a passenger sitting on the seat unit from being pushed down.

It is particularly advantageous if, when the seat unit is unloaded, the fixing devices are set to the release position and the body support part is set to its leaning position and/or the backrest to its starting position, which it holds in the leaning position of the body support, for a period of time that reaches or exceeds a predetermined minimum period partly occupies , if necessary . be moved back automatically. Such a return movement can be achieved by an internal spring device or an electric drive of the seat unit can be effected.

In order to control the fixing device or the fixing devices, the seat unit is preferably equipped with a seat-specific control device which is connected to the sensor, evaluates its sensor signal and controls the fixing device or Fixing devices controlled depending on the sensor signal, as has been described in the previous paragraphs, ie depending on the respective occupancy state of the seat unit.

In addition to the body support part, the seat unit can have one or more others around the pivot axis or the support member having pivotable body support portions; if further pivotable body support parts are present, these are preferably also equipped with at least one fixing device, as has been described above.

The invention also relates to a vehicle. According to the invention it is provided that the vehicle is equipped with a seat unit as described above.

With regard to the advantages of the vehicle according to the invention and its advantageous configurations, reference is made to the above statements in connection with the seat unit according to the invention and its advantageous configurations.

It is advantageous if the wall connection flange is screwed to a vehicle side wall and the connection section and the carrier element extend perpendicularly to the longitudinal direction of the vehicle and perpendicularly (from the preferably perpendicular) vehicle side wall into the vehicle interior. Mounting on the vehicle side wall leads to a particularly ef fi cient use of the vehicle interior or is particularly space-saving. It is also advantageous if the vehicle has an electrical control device which can place an electrically actuable fixing device of the seat unit in a fixing position.

The vehicle is preferably a local public transport vehicle.

The vehicle is preferably a rail vehicle.

It is advantageous if the vehicle has a central electrical control device which is connected to the electrically actuable fixing device of the seat unit and can actuate it in such a way that pivoting of the body support from the leaning position into the sitting position is partially blocked.

The central electrical control device is preferably designed in such a way that it actuates the fixing device by means of a central electrical control signal depending on the time of day and/or the day of the week and/or depending on an actually determined, an assumed or an estimated occupancy of the vehicle with passengers, in such a way that that it blocks the body support part in the leaning position by means of the fixing device when there is a high occupation and otherwise leaves the pivoting into the sitting position unaffected.

The invention also relates to a method for fitting a seat unit as described above in a vehicle as described above and which may be, for example, a local public transport vehicle.

According to the invention is provided with respect to the method that the wall connection flange is attached to a support wall of the vehicle and the elongated support member - before or after attaching the wall connection flange to the support wall, one end of the support element is pushed onto the connection section of the wall connection flange or pushed into the connection section of the wall connection flange.

With regard to the advantages of the method according to the invention and its advantageous configurations, reference is made to the above statements in connection with the seat unit according to the invention and its advantageous configurations.

The invention is explained in more detail below on the basis of exemplary embodiments; show examples

Figure 1 in a schematic plan view from above

From an exemplary embodiment of a vehicle according to the invention, which is equipped with an exemplary embodiment for a standing seat unit according to the invention,

Fig. 2-5 different positions of the standing seat units according to FIG. 1 in more detail,

Fig. 6-12 an advantageous mechanical structure of an exemplary embodiment for a standing seat unit in more detail,

Figure 13-15 an exemplary embodiment for an arrangement of a positively working fixing device tion in a cavity of a support element forming the pivot axis or of a back support element forming the backrest axis,

16-18 an exemplary embodiment of an arrangement of a frictionally operating fixing device in a cavity of a support element forming the pivot axis or of a back support element forming the backrest axis, and

FIG. 19 shows an exemplary embodiment of a standing seat unit with a seat-specific control device, seat-specific sensors and a seat-specific actuating element.

For the sake of clarity, the figures always use the same reference symbols for identical or comparable components.

FIG. 1 shows a schematic plan view from above of an exemplary embodiment of a rail vehicle 10 according to the invention, which is equipped with a large number of standing seat units 20-23. The standing seat units 20-23 are preferably identical in construction, so that the following exemplary statements in connection with the standing seat unit 20 apply to all standing seat units 20-23 of the rail vehicle 10, at least can apply.

The standing seat unit 20 includes a support element 200 which is suitable for mounting on a support wall, for example the side wall 11 of the rail vehicle 10 . The carrier element 200 forms a pivot axis S, about which a body support part 210 of the standing seat unit 20 can be pivoted.

The body support part 210 comprises a backrest 211 which can be pivoted about a backrest axis of rotation D and a holder teelement 212 in the form of a holding arm or pendulum arm, which holds the backrest pivot axis D pivotable about the pivot axis S on the support element 200 .

FIG. 1 shows a first sitting position of the standing seat unit 20 in which the body support part 210 is pivoted forward along a travel direction F. Alternatively, the body support part 210 can also be pivoted counter to the direction of travel F and another or take a second sitting position, as is the case, for example, with the standing seat unit 21 in FIG.

In addition, the body support part 210 can be placed in a leaning position in which sitting on the standing seat unit 20 or is not possible on the support element 200 because the backrest 211 is located vertically above the support element 200 and thus covers the support element 200; such a leaning position is assumed by the body support part 210 of the standing seat units 22 and 23 in FIG.

The two seat positions mentioned and the leaning position can be fixed by means of an electrically actuatable, lower fixing device, which will be discussed in more detail below.

The rail vehicle 10 also includes a central device 30, which is connected to the standing seat units 20-23 via electrical connecting lines (not shown) and is able to activate the lower fixing devices of the standing seat units 20-23 by means of a central control signal ST in order to To block the pivoting of the body support part 210 from the leaning position (see standing seat units 22 and 23) into one of the sitting positions (see standing seat units 20 or 21).

The central device 30 can be housed in an advantageous manner in a driver's cab 12 of the rail vehicle 10 and a central actuation of the fixing devices by an input E on the part of the vehicle driver, for example by pressing an activation button.

It is considered to be particularly advantageous if the central device 30 is designed in such a way that it automatically actuates the fixing devices depending on whether the rail vehicle 10 is actually occupied, assumed or estimated to have passengers. The central device 30 can operate the fixing devices, for example depending on the time of day and/or the day of the week, on the basis of the utilization of the rail vehicle 10 that is known to be expected.

In concrete terms, it is advantageous if, when the rail vehicle 10 is heavily loaded with passengers, the standing seat units 20-23 are fixed in their leaning position so that as much space as possible is available for passengers in the interior of the rail vehicle 10 . If, on the other hand, the utilization of the rail vehicle 10 is only moderate, the standing seat units 20-23 can be released so that passengers can bring the standing seat units 20-23 into the first or second seat position and sit down comfortably on them.

In addition to the mentioned body support part 210, the standing seat unit 20 can have one or more further body support parts 230, each of which can also be pivoted individually and each can be pivoted into a sitting position or a leaning position. The further body support parts 230 can preferably also be fixed with fixing devices, the explanations in connection with the body support part 210 thus apply to further body support parts 230 of the standing seat unit 20 accordingly.

In the exemplary embodiment according to FIG. 1, the standing seat units 20 to 23 are only mounted on the side wall 11 of the rail vehicle. Alternatively or additionally, corresponding standing seat units can also be attached to the other side wall 13 , a rear wall 14 , an inner wall 15 or inner partition walls not shown .

FIG. 2 shows the standing seat unit 20 according to FIG. 1 in more detail in a three-dimensional representation obliquely from the side. One can see the lower pivot axis S, about which the holding element 212 of the body support part 210 is mounted pivotably. The support member 212 carries a concealed elongate back support member that defines the seat back pivot axis D of the body support portion 210 .

In Figure 2 it can be seen that in the leaning position of the body support part 210 shown there, the backrest 211 is aligned vertically and is located vertically above the support element 200 covered with a pad 201 and the pivot axis S, so that sitting on the support element 200 is blocked is .

It can also be seen that the backrest 211 is aligned parallel to the holding element 212, which is also aligned vertically when the body support part 210 is in the leaning position.

FIG. 3 shows the position of the standing seat unit 21 according to FIG. 1 in more detail in a three-dimensional representation. It can be seen that the backrest 211 also has a predetermined orientation, for example a vertical orientation, in the sitting position. The vertical alignment of the backrest 211 , for example, is possible by pivoting the backrest 211 relative to the holding element 212 about the axis of rotation D of the backrest.

FIGS. 4 and 5 show in more detail the leaning position of the standing seat unit 23 according to FIG. 1 and the sitting position of the standing seat unit 20 according to FIG. 1 when it is occupied by people. FIG. 6 shows an example of components of the standing seat unit 20 according to FIG. The carrier element 200 can be seen, which is preferably a tubular extruded profile part without an outer padding sheath.

For mounting on a support wall, for example the side wall 11 according to FIG. 1, a wall connection section 241 of a wall connection flange 240 is screwed to the support wall. Before or after the wall connection flange 240 is screwed on, a support element end 202 of the support element 200 is pushed onto or pushed into a connection section 242 of the wall connection flange 240 . The connecting section 242 is preferably in the form of a cylindrical connecting piece.

It is considered particularly advantageous if the carrier element end 202 of the carrier element 200 is shrunk, pressed or glued onto the connection section 242 .

The connection section 242 of the wall connection flange 240 is preferably integrally formed on the wall connection section 241 of the wall connection flange 240 . The wall connection flange 240 is preferably formed by a cast part or a one-piece milled part.

The wall connection section 241 is preferably at least partially flat or has a surface section 241a with a bearing surface AF, which can be placed flat on the support wall and screwed onto it by means of screws 241b (cf. FIG. 2).

The connection section 242 designed as a connecting piece preferably extends perpendicularly from the bearing surface AF of the surface section 241a and thus—after installation—perpendicularly away from the support wall.

With regard to anti-twist protection, it is considered advantageous if the cross section of the connection section 242 the wall connection flange 240 and the cross section of the support member 200 is not circular or. not rotationally symmetrical or are congruent only partially rotationally symmetrical.

Support element end 202 can also be secured against both axial displacement and rotational rotation by a form fit, for example by at least one connecting element extending radially from the outside through connecting section 242 in the direction of support element 200, for example in the form of a screw or a rivet .

In addition, FIG. 6 shows a lower fixing device 300 which is suitable for fixing the holding element 212 of the body support part 210 . If the lower fixing device 300 is in its fixing position, pivoting of the holding element 212 of the body support part 210 is blocked; if, on the other hand, the lower fixing device 300 is in its release position, the holding element 212 can pivot.

In addition, FIG. 6 shows a second lower fixing device 301, which enables a release or a blocking of a pivoting movement of the further body support zteile 230 according to Figure 1 allows. The further explanations in connection with the lower fixing device 300 , which is assigned to the body support part 210 , apply correspondingly to the further lower fixing device 301 , which is assigned to the further body support part 230 .

FIG. 6 also shows other components of the standing seat unit 20, for example torsion springs 250, which return the body support parts to the leaning position when the associated fixing devices are inactive or inactive. allow this . FIG. 7 shows the carrier element 200 according to FIG.

In addition, FIG. 7 shows the cross section of the carrier element 200 in greater detail. It can be seen that the contour of the carrier element 200 seen in cross section comprises:

- An arc of a circle B200 provided with a groove, which delimits an imaginary circle K200 and on which the holding element 212 of the body support 210 bears, and

a radially inwardly extending contour region 1200 which delimits a receiving space R200 extending axially along the longitudinal axis of the carrier element outside of the carrier element 200 and within the imaginary circle K200.

The lower fixing devices 300 and 301 are arranged in the receiving space R200 , which is delimited by the contour area 1200 extending radially inwards and the imaginary circle K200 .

FIG. 8 shows the lower fixing device 300 according to FIG. 6 in more detail. It can be seen that the fixing device 300 has an electrically actuable magnetic drive 310 which can be activated by means of the central control signal ST. The magnetic drive 310 is designed to be able to move a fork-shaped fixing carriage 320 in the axial direction along the pivot axis S: If the central control signal ST is present, the fork-shaped fixing carriage 320 is extended to the right in Figure 8 by the magnetic drive 310, otherwise to the right retracted on the left.

The fixing carriage 320 comprises two blocking elements 321 and 322 aligned along the pivot axis S, which are each formed by a fork of the fixing carriage 320 . A stop 260 attached to the carrier element 200 serves to limit the axial movement of the fixing carriage 320 .

FIG. 8 shows the release position of the lower fixing device 300 in which the holding element 212 can be pivoted about the pivot axis S.

FIG. 9 shows the carrier element 200 and the receiving space R200 formed between the carrier element 200 and the holding element 212 in more detail. The two blocking elements 321 and 322 can be seen, which are pushed out in the axial direction and in the direction of the holding element 212 and enclose a stop section 212a of the holding element 212 between them. In the position of the two blocking elements 321 and 322 shown in FIG. 9, rotation of the holding element 212 about the pivot axis S is not possible, so that the vertical leaning position of the holding element 212 is fixed.

FIG. 10 shows the arrangement according to FIG. 9 after the two blocking elements 321 and 322 have been axially displaced or have been withdrawn and thus release the stop portion 212a of the holding element 212 . The holding element 212 can thus be pivoted clockwise—as shown in FIG. 10—or counterclockwise in order to pivot the body support part 210 into one of the two possible sitting positions.

As soon as the holding element 212 or the body support part 210 has assumed its end position in one of the sitting positions of the standing seat unit 20, the lower locking device 300 is activated again and the blocking elements 321 and 322 are extended, as shown in FIG. 11 by way of example. It is therefore no longer possible for the body support part 210 to pivot back from the respective sitting position into the leaning position. The fact that the pivoting back is blocked is prevents a passenger sitting on the standing seat unit 20 from being pushed off the latter, for example even when another passenger presses against the body support part 210 .

In addition to the lower fixing device 300 , the standing seat unit 20 is equipped with an upper fixing device 400 , which allows or blocks the backrest 211 from pivoting about the backrest axis of rotation D.

FIG. 12 shows an example of the release position of the upper fixing device 400, in which an axially displaceable blocking element 410 is separated from receiving slots 420, 421 and 422, which are provided in the backrest 211.

The receiving slots 420 , 421 and 422 can be formed, for example, in a backrest support element 211a of the backrest 211 which is hollow on the inside.

In the position of the blocking element 410 shown in FIG. 12, the backrest 211 can be pivoted about the backrest axis of rotation D, which, due to gravity, leads to a vertical alignment of the backrest 211 or to pivoting due to gravity up to—if present—a stop on the backrest. The backrest 211 can be blocked by moving the blocking element 410 into the central receiving slot 421 .

As soon as the body support part 210 or whose holding element 212 has been pivoted into the seated position and the lower fixing device 300 zteile the seated position of the body support

210 fixed, the upper fixing device 400 is preferably also activated and the blocking element 410 is pushed into the receiving slot 420 or 422 that matches the j eweilen seat position, so that the backrest can be rotated further

211 is blocked about the axis of rotation of the backrest D and its alignment caused by gravity is fixed. FIGS. 13 to 15 show, by way of example, that the lower fixing device 300 does not have to be arranged outside of the cavity H200 of the carrier element 200, but can alternatively also be arranged in the cavity H200 itself. 13 to 15 show an example of a blocking element 370, which can be moved in and out radially and is extended radially to block a pivoting movement of the holding element 212, for example into a recess A212 in the holding element 212, and is retracted radially to release it.

Figures 16 to 18 show an example of an arrangement of a lower fixing device 300 in the cavity H200 of the support element 200, a fixing or release of a pivoting movement of the holding element 212 taking place by friction using a retracted or extended friction element 380.

The fixing devices shown in FIGS. 13 to 18 can also be used to fix the backrest 211 by being inserted into a cavity of a backrest support element 211a (see FIG. 12), which forms the backrest pivot axis D.

FIG. 19 shows an example of a particularly preferred development of the standing seat unit 20 described above. In the further development according to FIG. 19, one or more sensors, for example two sensors 500 and 510, are integrated in the backrest 211, which detect leaning against the backrest 211 and, when the backrest 211 is unloaded, transmit a free signal FS 1 or Create FS2 . Also in the area of the pivot axis S or A sensor 520 may be attached to the carrier element 200, which detects sitting on the standing seat unit 20 and generates a free signal FS3 when the carrier element 200 is unloaded. The sensors 500 , 510 and 520 are connected to a seat-specific control device 550 via lines that are not shown.

The seat's own control device 550 stands with the lower one

Fixing device 300 and the upper fixing device 400 in Connection and also controls this depending on the sensor signals of the sensors 500 , 510 and 520 .

If the seat's own control device 550 determines that a transition has taken place from a loaded state of the standing seat unit 20 , which it recognizes from the presence of at least one occupied signal or the absence of at least one of the free signals FS 1, FS2 or FS3 recognizes in an unloaded state in which all three free signals FS 1, FS2 or FS3 are present, it starts a timer (timer).

If the seat's own control device 550 subsequently determines that the unloaded state lasts for a specified minimum period of time, which begins when the timer starts, it releases the fixing devices 300 and 400 for a specified release period of time, so that the body support part 210 is in the leaning position - for example driven by the associated torsion spring 250 - can swing back. The seat's own control device 550 then preferably returns the fixing devices to the fixing position.

In order to enable unlocking on the passenger side, the seat's own control device 550 is preferably connected to an actuating element 560 (actuating switch or sensor 15 working without contact), with which a passenger can unlock or Can request release of the standing seat unit 20 by generating a request signal AS.

If there is a request signal AS, the seat's own control device 550 preferably places the fixing devices 300 and 400 in the release position, but only if there is no central control signal ST from the central device 30 or is present from the driver's cab 12, with which a pivoting of the body support part 210 out of the leaning position is blocked.

It is particularly advantageous if the seat's own control device 550 only takes the request signal AS into account if if no central control signal ST of the central device 30 or. from the driver's cab 12 and the body support part 210 is also in the leaning position, which can be detected by means of a position sensor 570 (see leaning position signal ALS in FIG. 19).

In addition to the body support part 210, the standing seat unit can have one or more other body support parts 230 that can be pivoted about the pivot axis S; if further pivotable body support parts 230 are present, these are preferably also equipped with at least one fixing device 300 and/or 400 and/or sensors and/or seat-specific control device and/or seat-specific actuating element, as has been described above.

Finally, it should be mentioned that the features of all the exemplary embodiments described above can be combined with one another in any desired way in order to form further other exemplary embodiments of the invention. All features of subclaims can each be combined with each of the subordinate claims, each individually or in any combination with one or other subclaims, in order to obtain further other exemplary embodiments.

Claims

patent claims

1. Seat unit (20-23) with a pivot axis (S) about which at least one body support part (210) of the seat unit (20-23) can be pivoted, characterized in that the pivot axis (S) is formed by an elongate support element (200). is pushed with a support element end (202) onto or into a connection section (242) of a wall connection flange (240) suitable for attachment to a support wall.

2. Seat unit (20-23) according to claim 1, characterized in that

- the wall connection flange (240) has a wall connection section (241) for resting on and attachment to the support wall and

- The connection section (242) extends away perpendicularly from the wall connection section (241) - and thus after assembly perpendicularly from the support wall - and is integrally formed on the wall connection section (241).

3. Seat unit (20-23) according to claim 2, characterized in that the carrier element end (202) is shrunk onto the connection section (242), pressed on or glued on.

4. Seat unit (20-23) according to one of the preceding claims, characterized in that the support element end (202) is secured against rotational twisting by a non-rotationally symmetrical cross section of the support element end (202) and a matching non-rotationally symmetrical cross section of the connecting section (242).

5. Seat unit (20-23) according to one of the preceding claims, characterized in that the carrier element end (202) is secured by positive locking against axial displacement and against rotational rotation, specifically by at least one radially extending from the outside through the connection section ( 242) in the direction of the carrier element (200) extending connecting element.

6. Seat unit (20-23) according to one of the preceding claims, characterized in that the wall connection flange (240) is formed by a one-piece molded piece, in particular a cast piece or a milled molded part.

7. Seat unit (20-23) according to any one of the preceding claims 2 to 6, characterized in that

- The carrier element (200) is a tube, in particular an extruded profile part, and

- The connection section (242) is a connection piece which is integrally formed on the wall connection section (241) and onto which the pipe is pushed.

8. Seat unit (20-23) according to any one of the preceding claims, characterized in that the contour of the carrier element (200) seen in cross section

- An arc of a circle (B200) which delimits an imaginary circle (K200) and on which a holding element (212) of the body support part (210) bears to guide a rotation of the body support part (210), and

- Has a contour area (1200) extending radially inwards, which delimits an axially extending receiving space (R200) outside of the carrier element (200) and within the imaginary circle (K200).

9. Seat unit (20-23) according to any one of the preceding claims, characterized in that the seat unit (20-23) is a standing seat unit and the body support part (210) of the seat unit (20-23) in a leaning position in which leaning on the body support part (210) is possible, but the body support part (210) blocks sitting on the seat unit (20-23), and in a sitting position in which both leaning against the body support part (210) and sitting on the seat unit ( 20-23) is possible, is adjustable.

10. Seat unit (20-23) according to any one of the preceding claims, characterized in that

- the seat unit (20-23) has an electrically actuable fixing device (300),

- wherein the fixing device (300) moves into a fixing position in which the fixing device (300) blocks a pivoting movement of the body support part (210) and into a release position in which the fixing device (300) releases the pivoting movement of the body support part (210), can be asked.

11. Seat unit (20-23) according to claim 10, characterized in that the fixing device (300) is suitable for fixing the body support part (210) both in the leaning position and in the sitting position.

12. Seat unit (20-23) according to one of the preceding claims 10 to 11, characterized in that the fixing device (300) in the axially extending receiving space (R200) through the radially inwardly extending contour area (1200) and the fictitious circle (K200) is limited, is placed or is arranged within the carrier element (200).

13. Vehicle (10), characterized in that the vehicle is equipped with a seat unit (20-23) according to any one of the preceding claims.

14. Vehicle according to Claim 13, characterized in that the wall connection flange (240) is screwed to a vehicle side wall (11) and the connection section (242) and the carrier element (200) extend perpendicularly to the longitudinal direction of the vehicle and perpendicularly away from the vehicle side wall (11) in extend the vehicle interior.

15. A method of attaching a seat unit (20-23) according to any one of the preceding claims in a vehicle, characterized in that

- the wall connection flange (240) is attached to a supporting wall of the vehicle (10) and

- the elongate support element (200) - before or after attaching the wall connection flange (240) to the support wall - with one support element end (202) pushed onto the connection section (242) of the wall connection flange (240) or into the connection section (242) of the wall connection flange (240) is pushed in.