GB2103077A - Seats - Google Patents

Seats Download PDF

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Publication number
GB2103077A
GB2103077A GB08213156A GB8213156A GB2103077A GB 2103077 A GB2103077 A GB 2103077A GB 08213156 A GB08213156 A GB 08213156A GB 8213156 A GB8213156 A GB 8213156A GB 2103077 A GB2103077 A GB 2103077A
Authority
GB
United Kingdom
Prior art keywords
seat
seat part
pawl
angle
release
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
GB08213156A
Other versions
GB2103077B (en
Inventor
Jurgen Korth
Dietmar Muhlen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rentrop Hubbert & Wagner
Original Assignee
Rentrop Hubbert & Wagner
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.)
Filing date
Publication date
Application filed by Rentrop Hubbert & Wagner filed Critical Rentrop Hubbert & Wagner
Publication of GB2103077A publication Critical patent/GB2103077A/en
Application granted granted Critical
Publication of GB2103077B publication Critical patent/GB2103077B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1807—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic
    • B60N2/1835—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by the cinematic pivoting about an axis located in the front
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1885—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other with weight compensating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1892—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other characterised by a lock
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
    • B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
    • B60N2/16—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable
    • B60N2/18—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable height-adjustable the front or the rear portion of the seat being adjustable, e.g. independently of each other
    • B60N2/1896—Stepwise movement mechanisms, e.g. ratchets

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)
  • Chairs Characterized By Structure (AREA)

Abstract

A seat, particularly a motor vehicle seat has an arrangement for raising and lowering the rear of the seat part of the seat. The seat part is held in its selected position by means of a locking pawl 15 which can be moved into a disengaged position by means of an angle lever 25, one arm of which is linked to the associated pawl by a pin 27 passing through a guide slot 29 and the other arm of which is directly mounted on an angled release lever 21 which is manually operated. On disengagement of the pawls the rear of the seat part can be raised by means of a torsion spring or can be lowered against the bias of the torsion spring. <IMAGE>

Description

SPECIFICATION Seats The present invention relates to a seat, particularly a motor vehicle seat, with an arrangement for raising and lowering the rear of the seat part of the seat.
There has been proposed an arrangement for raising the rear of the seat part of a vehicle seat comprising torsion springs which are tensioned as the seat part moves into a iower position. The support for the seat has in this arrangement two stays which are parallel at a distance from each other. On each of the stays in the vicinity of the rear of the seat part, one arm of an angle piece is hinged. The other arm of the angle piece is in the form of a toothed segment, which can be locked by a toothed pawl. The pawl is hinged on a plate joined with an associated side support, and the two angle pieces are fixed at their apices to a connecting tube. The two plates are rotatably mounted on the connecting tube, each torsion spring being connected at one end with the connecting tube, and at the other end with one of the two plates.Each of the two toothed pawls can be pivoted to a released position by means of an angle lever. Each angle lever is rotatably mounted on the associated plate, and the two angle levers are actuable by means of a rocking lever via crank gears.
The crank gears in this previously proposed arrangement complicate the overall construction and lead to increased weight and reduced reliability.
According to the invention, there is provided a seat comprising a seat part having a side support at each side, and a support assembly for raising the rear of the seat part, the support assembly comprising a plate attached to each side support, a connecting shaft extending between the plates, said plates being pivotally mounted on the shaft, an angle member at each side of the seat part, each angle member comprising two arms and an apex portion and being fixed at its apex portion on the tube, stay means pivotally supporting one of the arms of each angle member, the other arm of each angle member forming a toothed segment, a toothed pawl pivotally mounted on each respective plate and movable between a locked position in which the pawl engages the corresponding toothed segment to retain the segment, and a released position disengaged from the segment, torsion spring means operatively interposed between the two plates and the shaft to cause the rear of the seat part to be raised upon release of the pawls, movement of the rear of the seat part into a lowered position being against the bias of the torsion spring means, and release means for moving the pawls to their released positions, said release means comprising two angle levers, each pivotally mounted on a respective one of the plates and linked to the associated pawl, and each including an apex portion, and an angled release lever including a portion extending transversely of the seat said portion being firmly attached to the apices of the two angle levers.
Advantageously, one end of each angle lever carries a pin which is inserted through a slot in the plate and engages into a guide slot in the associated toothed pawl.
One arm of each angle lever is preferably subject to the action of a tension spring, one end of which is connected with the associated plate in such a way that upon release of the release lever, the toothed pawl engages with the toothed segment.
In one preferred practical embodiment, the side supports of the seat part at the front of the seat are joined to a seat supporting surface by means of guide rods.
In another preferred practical embodiment, the two side supports of the seat part are joined together by means of a central support which is supported at one end on a bearing joined to the seat supporting surface, the central support being articulated at its other end on the connecting shaft. The connecting shaft supports the torsion springs and thereby acts as a bearing for the central support, and therefore has two tasks to perform, as a consequence of which a special means of support is dispensed with. Also, as a consequence of this step, the overall weight of the seat is further decreased insofar as the connecting shaft performs two different roles.
Embodiments of the invention will now be described, by way of example only, with reference to the accompanying diagrammatic drawings, in which: Figure 1 is a fragmentary side elevation, partly in cross-section, of a vehicle seat according to the invention in a position in which the rear of the seat part is lowered; Figure 2 is a fragmentary side elevation, partly in cross-section, showing the seat in a position in which the rear of the seat part is raised; Figure 3 is an enlarged side elevation, showing part of the arrangement of Figure 2 in greater detail; Figure 4 is an enlarged elevation, similar to Figure 3, but showing a toothed pawl in its released condition; Figure 5 is a cross-section to an enlarged scale on line V-V of Figure 2; and Figure 6 is a fragmentary side elevation, partly in cross-section of a further embodiment of the seat.
Reference 1 (Figure 1) denotes a support for the seat and which comprises two parallel stays 2, 3 which are at a distance from each other. The seat part of the seat comprises two side supports 4, 5 on which a sitting area (not shown) is supported.
Reference 6 denotes a connecting shaft in the form of a tube which connects together two angle pieces 7, 8 at their apices, the angle pieces being fixed in a suitable manner on the connecting tube 6. One arm 9, 10 of each angle piece 7, 8 is articulated through a joint 11, 12 to the associated stay 2, 3. The other arm of each angle piece is constructed as a toothed segment 1 3,1 4 and co-operates with a respective toothed pawl 1 5, 1 6, these pawls, when in a locking position, engaging with the associated toothed segments 13,14.
Each toothed pawl 1 5, 1 6 is hinged at point 17, 18 on a plate 19, 20, these plates being connected with the associated side supports 4, 5 and being rotatably mounted on the connecting tube 6.
The two toothed pawls 1 5, 1 6 can be moved into a released position by a rocking release lever 21. This rocking release lever 21 is angled and includes a portion 22 extending transversely between the two plates 19, 20 and journalled in these plates. The portion 22 passes through a shaped elongate slot in the angle piece 7 to permit movement of the transverse portion 22 relative to the piece 7 during raising and lowering of the seat part. The transverse portion 22 is firmly connected with the apices 23 and 24 of two angle levers 25 and 26 and thereby the angle levers 25 and 26 are rotatably mounted on a respective one of plates 19,20.
At one end of the angle lever 25, 26, a pin 27, 28 is provided and extends through a slot in the associated plate 19, 20, into a guide slot 29, 30 in the associated pawl 1 5, 1 6.
One arm of each angle lever 25, 26 is acted upon by a tension spring 31,32 the other end of which, at point 33, 34, is connected with the associated plate 1 9, 20 in such a manner that on release of the rocking lever 21, the pawl 15,16 engages into the associated toothed segment 13,14.
References 35 and 36 (Figure 5) denote respective torsion springs which are tensioned upon the movement of the seat part into a lowered position. Each torsion spring 35, 36 is connected at one end with the connecting tube 6 and at the other end by means of pins 37, 38 with a respective one of the two plates 1 9, 20. As torsion springs are known per se as lifting means for seat adjustment devices, further details with be dispensed with.
The two side supports 4, 5 are connected at the front of the seat with a seat supporting surface in the form of the floor 41 of the motor vehicle by means of a central support 42 which is supported at one end on a bearing 43 connected to the vehicle floor 41. In this arrangement the central support 42 is rotatably articulated about the connecting tube.
In the embodiment shown in Figure 6, the two side supports 4, 5 of the seat part are connected at the front of the seat with the floor 41 of the motor vehicle by means of guide rods 39, 40.
The operation of the seat is as follows:- In the position in which the rear side of the seat part is lowered, the individual elements assume the position shown in Figure 1 of the drawing. In this position the two torsion springs 35, 36 are tensioned.
If the seat is to be used by a person whose length of body is comparatively small, the rear side of the seat part must be raised. To bring the rear side of the seat part into a raised position, the user moves the rocking lever 21 clockwise (as viewed in Figure 1). The consequence of this is that the two angle levers 25 and 26 are pivoted in the same direction directly by the transverse portion 22, so that the pins 27 and 28 move the two toothed pawls 1 5 and 16 along the guide slots 29 and 30, and thereby the teeth of the two toothed pawls 1 5 and 1 6 are moved out of engagement with the toothed segments 13, 14 as Figure 4 of the drawings shows.As a result the strain energy stored in the two torsion springs 35 and 36 is released and moves the two angle pieces 7 and 8, the connecting rod 6 connected with them, and also the plates 1 9 and 20 rotatably mounted on the latter, into the position shown in Figures 2 and 3 or an intermediate position.
If the rocking lever 21 is released then the tension springs 31,32 move the angle levers 25, 26 back anticlockwise, with the result that the two toothed pawls 1 5 and 1 6 are moved by the pins 27 and 28 back into the engagement position in which position they engage the corresponding toothed segments 13 and 14.
The tensioning of the two torsion springs 35 and 36 is effected by moving the rocking lever 21 clockwise and loading the sitting area of the seat part which, as a result, assumes the position shown in Figure 1 of the drawings, or an intermediate position.
In the embodiments described, as a result of the eliminating of a crank gear in each case between the rocking release lever and the two angle levers, the overall weight of the seat is considerably reduced, and in addition the reliability of operation and the freedom from breakdowns of the adjustment device are improved in relation to the previously proposed seat discussed earlier.

Claims (6)

1. A seat comprising a seat part having a side support at each side, and a support assembly for raising the rear of the seat part, the support assembly comprising a plate attached to each side support, a connecting shaft extending between the plates, said plates being pivotally mounted on the shaft, an angle member at each side of the seat part, each angle member comprising two arms and an apex portion and being fixed at its apex portion on the tube, stay means pivotally supporting one of the arms of each angle member, the other arm of each angle member forming a toothed segment, a toothed pawl pivotally mounted on each respective plate and movable between a locked position in which the pawl engages the corresponding toothed segment to retain the segment, and a released position disengaged from the segment, torsion spring means operatively interposed between the two plates and the shaft to cause the rear of the seat part to be raised upon release of the pawls, movement of the rear of the seat part into a lowered position being against the bias of the torsion spring means, and release means for moving the pawls to their released positions, said release means comprising two angle levers, each pivotally mounted on a respective one of the plates and linked to the associated pawl, and each including an apex portion, and an angled release lever including a portion extending transversely of the seat part, said portion being firmly attached to the apices of the two angle levers.
2. A seat according to claim 1, wherein each pawl includes a guide slot, each plate includes a slot and each angle lever includes a pin, the pin extending through the slot in the plate into the guide slot in the associated pawl.
3. A seat according to claim 2, further comprising spring means acting between each angle lever and the associated plate to move the pawl into engagement with the toothed segment upon release of the release lever.
4. A seat according to any one of claims 1 to 3, further comprising guide rods connecting the side supports at the front of the seat part to a seat supporting surface.
5. A seat according to any one of claims 1 to 4, further comprising a central support extending longitudinally of the seat part, said central support supporting the side supports, and the central support being supported at one end on a seat supporting surface, and at the other end on the connecting shaft.
6. A seat substantially as hereinbefore described with reference to the accompanying drawings.
GB08213156A 1981-07-18 1982-05-06 Seats Expired GB2103077B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19818121177U DE8121177U1 (en) 1981-07-18 1981-07-18 SEAT, IN PARTICULAR MOTOR VEHICLE SEAT

Publications (2)

Publication Number Publication Date
GB2103077A true GB2103077A (en) 1983-02-16
GB2103077B GB2103077B (en) 1984-09-12

Family

ID=6729569

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08213156A Expired GB2103077B (en) 1981-07-18 1982-05-06 Seats

Country Status (13)

Country Link
JP (1) JPS5819205A (en)
AU (1) AU8468182A (en)
BE (1) BE892903A (en)
BR (1) BR8202770A (en)
DE (1) DE8121177U1 (en)
ES (1) ES511524A0 (en)
FR (1) FR2509595A1 (en)
GB (1) GB2103077B (en)
IT (1) IT1159790B (en)
MX (1) MX154179A (en)
NL (1) NL8201368A (en)
SE (1) SE8202127L (en)
ZA (1) ZA824125B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582266A1 (en) * 1985-05-22 1986-11-28 Tubauto Device making it possible to adjust the height and inclination of the seat part of a seat with the aid of a central control
GB2196052A (en) * 1986-10-08 1988-04-20 Ikeda Bussan Co Seat recliner assembly
EP0425918A2 (en) * 1989-11-02 1991-05-08 Audi Ag Actuator lever for a vehicle seat
WO2002034563A1 (en) * 2000-10-24 2002-05-02 Volkswagen Aktiengesellschaft Articulated lever construction for a seat frame

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198325A (en) * 1983-04-27 1984-11-10 Ishida Scales Mfg Co Ltd Automatic zero-point adjusting method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749537A (en) * 1971-06-04 1973-07-31 Schriever Design Co Inc Mold base for injection molding apparatus
JPS5238468Y2 (en) * 1974-09-19 1977-09-01
DE2455648A1 (en) * 1974-11-25 1976-05-26 Volkswagenwerk Ag SEAT ARRANGEMENT FOR A VEHICLE WITH A SEAT WITH ADJUSTABLE SURFACE INCLINATION
FR2324482A1 (en) * 1975-09-19 1977-04-15 Faure Bertrand Vehicle seat with lifting mechanism - has handwheel operation to give easy adjustment of tilt angle of seat
DE2628351A1 (en) * 1976-06-24 1977-12-29 Rentrop Hubbert & Wagner Height adjustment for car seat - with rear edge on torsion spring with retaining ratchets and cams disengaged via hand lever
FR2398473A1 (en) * 1977-07-27 1979-02-23 Peugeot Height adjustable vehicle seat support - consists of plate, with toothed parts pivot mounted on bar and lever catch mechanism
DE2831291C2 (en) * 1978-07-17 1986-09-11 C. Rob. Hammerstein Gmbh, 5650 Solingen Vehicle seat
JPS5639929A (en) * 1980-06-23 1981-04-15 Aisin Seiki Co Ltd Device for adjusting height of automotive seat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2582266A1 (en) * 1985-05-22 1986-11-28 Tubauto Device making it possible to adjust the height and inclination of the seat part of a seat with the aid of a central control
GB2196052A (en) * 1986-10-08 1988-04-20 Ikeda Bussan Co Seat recliner assembly
GB2196052B (en) * 1986-10-08 1990-04-18 Ikeda Bussan Co Seat recliner assembly
EP0425918A2 (en) * 1989-11-02 1991-05-08 Audi Ag Actuator lever for a vehicle seat
EP0425918A3 (en) * 1989-11-02 1992-04-29 Audi Ag Actuator lever for a vehicle seat
WO2002034563A1 (en) * 2000-10-24 2002-05-02 Volkswagen Aktiengesellschaft Articulated lever construction for a seat frame

Also Published As

Publication number Publication date
BR8202770A (en) 1983-04-19
SE8202127L (en) 1983-01-19
ES8303907A1 (en) 1983-02-16
FR2509595A1 (en) 1983-01-21
IT8285590A0 (en) 1982-07-15
IT1159790B (en) 1987-03-04
FR2509595B1 (en) 1983-12-16
AU8468182A (en) 1983-01-27
GB2103077B (en) 1984-09-12
ZA824125B (en) 1983-05-25
BE892903A (en) 1982-08-16
JPS5819205A (en) 1983-02-04
DE8121177U1 (en) 1981-12-03
ES511524A0 (en) 1983-02-16
MX154179A (en) 1987-06-01
NL8201368A (en) 1983-02-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee