GB1577776A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1577776A – Head-rest assemblies vehicle seats
– Google Patents

GB1577776A – Head-rest assemblies vehicle seats
– Google Patents
Head-rest assemblies vehicle seats

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Publication number
GB1577776A

GB1577776A
GB18866/77A
GB1886677A
GB1577776A
GB 1577776 A
GB1577776 A
GB 1577776A
GB 18866/77 A
GB18866/77 A
GB 18866/77A
GB 1886677 A
GB1886677 A
GB 1886677A
GB 1577776 A
GB1577776 A
GB 1577776A
Authority
GB
United Kingdom
Prior art keywords
head
rest
sleeve
intermediate element
leg
Prior art date
1976-06-24
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.)

Expired

Application number
GB18866/77A
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.)

Chrysler France SAS

Original Assignee
Chrysler France SAS
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.)
1976-06-24
Filing date
1977-05-05
Publication date
1980-10-29

1977-05-05
Application filed by Chrysler France SAS
filed
Critical
Chrysler France SAS

1980-10-29
Publication of GB1577776A
publication
Critical
patent/GB1577776A/en

Status
Expired
legal-status
Critical
Current

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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

B60N2/80—Head-rests

B60N2/806—Head-rests movable or adjustable

B60N2/809—Head-rests movable or adjustable vertically slidable

B60N2/812—Head-rests movable or adjustable vertically slidable characterised by their locking devices

B60N2/821—Head-rests movable or adjustable vertically slidable characterised by their locking devices with continuous positioning

B60N2/824—Head-rests movable or adjustable vertically slidable characterised by their locking devices with continuous positioning using springs

Description

(54) IMPROVEMENTS IN OR RELATING TO A HEAD-REST ASSEMBLIES
FOR VEHICLE SEATS
(71) We, CHRYSLER FRANCE, a French
Body Corporate, of 136, Avenue des Champs Elystes-75008 Paris, France, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement :
The present invention relates to head-rest assemblies for seats, more particularly vehicle seats, of the type in which the height of the head-rest above the seat is adjustable.
According to the present invention, there is provided a head-rest assembly for a seat, comprising a head-rest, a pair of legs extending from the head-rest, a sleeve for each leg for mounting on the seat and an intermediate element interposed between at least one of the legs and its respective sleeve, said intermediate element being axially fixed with respect to said leg and axially slidable with respect to said sleeve, and said intermediate element being provided with axially spaced projections adapted to engage complementary axially spaced teeth provided in said sleeve and being rotatable relative to said sleeve about the axis of said leg between two positions, in one of which said complementary projections and teeth are engaged to axially lock said intermediate element with respect to said sleeve, and in the other of which the complementary projections and teeth are freed to permit said intermediate element to slide with respect to said sleeve to adjust the height of the head-rest, a return spring being provided to urge the complementary projections and teeth into engagement.
An embodiment of the present invention will now be described by way of example, reference being made to the accompanying drawings in which:
Figure 1 is a cross-sectional view, partially broken away, through a head-rest assembly according to the invention, mounted on a vehicle seat squab;
Figure 2 is an elevational view in the direction of arrow II of Figure 1 of certain broken-away portions, allowing the mounting details to be better seen; and
Figure 3 is an exploded perspective view showing various parts of the head-rest assembly and seat.
According to the form of embodiment illustrated, the head-rest assembly is of the type comprising a substantially U-shaped member 1, e.g. of steel tubular material, with the two legs la, lb thereof fitting by means of interposed mounting sleeves 2a, 2b, respectively, into two tubes 3a, 3b, e.g.
of steel, welded to the structure 4 of the seat back 5.
The fitting of the legs la, lb of the member 1 into the sleeves 2a, 2b, themselves inserted into the tubes 3a, 3b, is performed with interposition of intermediate elements 5a, 5b, respectively.
Each intermediate element 5a, 5b, is provided with teeth, tongues, pins or like projections 6 which, as will be explained later, are adapted to engage in axial locking relationship complementary teeth 7 provided in each sleeve 2a, 2b. Return springs 8a, 8b of the torsion type have one of their ends 9a, 9b inserted into orifices 10a, 10b in the legs la, lb of the U-shaped member 1, and their other ends 1 la, 1 lb, inserted into passages 12a, 12b provided in the corresponding intermediate elements 5a, 5b. In the example illustrated, each intermediate element 5a, 5b comprises a portion of tube
13a, 13b capped with a ring 14a, 14b of a larger diameter, the tube 13a, 1 3b being connected to the ring 14a, 14b, by radial tongues 15, thus providing passages 12a, 12b between the said tongues, the outer wall of tubes 13a, 13b and the inner wall of rings 14a,
14b.
In each leg la, lb there is also provided a transverse passage orifice 16a, 1 6b for a pin
17a, 17b, which, when mounted, is also inserted into apertures 18a, 1 8b provided in the intermediate elements 5a, 5b. The pin
17a, 17b axially locks the leg la, 1b with respect to the intermediate element 5a, 5b, while at the same time allowing a certain relative rotation between the intermediate element and the corresponding leg about its axis.
Each sleeve 2a, 2b has a split bottom end with teeth 19a, 19b separated by slots 20a, 20b allowing the sleeves 2a, 2b to be resiliently and tightly forced into the tubes 3a, 3b and locked at the end of their travel by the hookshaped teeth 19a, 19b as appears more particularly in Figure 1 and 2. Furthermore, a positioning projection 21a 21b allows each sleeve 2a, 2b to be accurately positioned in rotation in the corresponding tube 3a, 3b by a notch 22a, 22b provided in each tube 3a, 3b.
Two helical springs 23a, 23b are placed under the intermediate element tube 13a, 13b and bear upon the lower face of tubes 13a, 13b and against an abutment 24 (Figures 1 and 2) provided in each sleeve 2a, 2b, or alternatively against tubes 3a and 3b of the seat structure.
The U-shaped member 1 comprises at its upper portion a strengthening plate 25. In a known manner, upholstery 26 of the head-rest is moulded around the member 1 and the plate 25 and is formed, e.g., from synthetic foam material. The upholstery is asymmetrical with a more bulging face 27 and a less salient face 28, so that, by reversing the mounting position by one hundred and eighty degrees, either the face 28 as illustrated in full lines, or the face 27 as illustrated at 271 in thin lines (Figure 1) can be turned forward, so that the head-rest is not only adjustable in height, as shown by the positions 261, 2611, but also in depth according to whether the head-rest is turned one side or the other.
The mounting and use of the head-rest according to the invention are inferred from the foregoing explanations.
The sleeves 2a, 2b are first inserted into the tubes 3a, 3b until the resilient teeth l9a, l9b are locked under the lower edge of tubes 3a, 3b (Figures 1 and 2). A correct positioning in rotation is ensured by the interaction between the projections 21a, 21b inserted into the notches 22a, 22b.
Thereafter, the legs la, 1b are locked by means of the pins 17a, 17b on the intermediate elements 5a, 5b. The pins, by penetrating into the orifices 16a, 16b of the legs and the apertures 18a, 18b of the intermediate elements, ensure the axial locking of the legs of the U-shaped member 1 with respect to the intermediate elements while at the same time allowing a certain rotation of the intermediate elements about the mounting axis.
The ends 9a, 9b of the springs 8a, 8b are then inserted into the orifices 10a, 10b of legs la, lb, whereas their other end 1 lea, 1 lib is inserted into a passage 12a, 12b of the intermediate elements 5a, 5b ensuring the torsional return of the said intermediate elements about their mounting axis to a fixing position at one end of the apertures 18a, 18b. This fixing position is such that the tongues 6 of the intermediate elements are located opposite the rack teeth 7 provided within the sleeves 2a, 2b.
Thereafter, the springs 23a, 23b are placed in the sleeves 2a, 2b. The head-rest is then inserted, with its intermediate elements 5a, 5b axially locked on the legs la, ib, by rotating the intermediate elements against the action of the springs 8a, 8b from the fixing position to a second position limited by the other ends of the apertures 18a, 18b, so that the projections 6 are clear of the rack teeth 7. When the head-rcst is in the desired position in height, the intennediate elements 5a, 5b are released and the springs 8a, 8b rotate the intermcdiate elements so as to cause the projections 6 to engage the corresponding rack teeth 7, thus locking the headrest in the selected position in height In a modification of the head-rest assembly according to the invention, the vertical locking of the head-rest may be provided on only one leg such as for example la, in which case the non-lockable leg lb slides freely in a sleeve (not shown) inserted in the tube 3b and replacing the mating members 2b, 5b.
WHAT WE CLAIM IS 1. A head-rest assembly for a seat, comprising a head-rest, a pair of legs extending from the head-rest, a sleeve for each leg for mounting on the seat and an intermediate element interposed between at least one of the legs and its respective sleeve, said intermediate element being axially fixed with respect to said leg and axially slidable with respect to said sleeve, and said intermediate element being provided with axially spaced projections adapted to engage complementary axially spaced teeth provided in said sleeve and being rotatable relative to said sleeve about the axis of said leg between two positions, in one of which said complementary projections and teeth are engaged to axially lock said intermediate element with respect to said sleeve, and in the other of which the complementary projections and teeth are freed to permit said intermediate element to slide with respect to said sleeve to adjust the height of the head-rest, a return spring being provided to urge the complementary projections and teeth into engagement.
2. An assembly as claimed in Claim 1, wherein the projections on each intermediate element are formed as teeth or pins.
3. An assembly as claimed in Claim 1 or
Claim 2, wherein said intermediate element is axially fixed with respect to its respective leg by means of a pin extending transversely through apertures in said intermediate element and said leg, the apertures being such that said intermediate element is rotatable about said leg between said two positions.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (13)

**WARNING** start of CLMS field may overlap end of DESC **. while at the same time allowing a certain relative rotation between the intermediate element and the corresponding leg about its axis. Each sleeve 2a, 2b has a split bottom end with teeth 19a, 19b separated by slots 20a, 20b allowing the sleeves 2a, 2b to be resiliently and tightly forced into the tubes 3a, 3b and locked at the end of their travel by the hookshaped teeth 19a, 19b as appears more particularly in Figure 1 and 2. Furthermore, a positioning projection 21a 21b allows each sleeve 2a, 2b to be accurately positioned in rotation in the corresponding tube 3a, 3b by a notch 22a, 22b provided in each tube 3a, 3b. Two helical springs 23a, 23b are placed under the intermediate element tube 13a, 13b and bear upon the lower face of tubes 13a, 13b and against an abutment 24 (Figures 1 and 2) provided in each sleeve 2a, 2b, or alternatively against tubes 3a and 3b of the seat structure. The U-shaped member 1 comprises at its upper portion a strengthening plate 25. In a known manner, upholstery 26 of the head-rest is moulded around the member 1 and the plate 25 and is formed, e.g., from synthetic foam material. The upholstery is asymmetrical with a more bulging face 27 and a less salient face 28, so that, by reversing the mounting position by one hundred and eighty degrees, either the face 28 as illustrated in full lines, or the face 27 as illustrated at 271 in thin lines (Figure 1) can be turned forward, so that the head-rest is not only adjustable in height, as shown by the positions 261, 2611, but also in depth according to whether the head-rest is turned one side or the other. The mounting and use of the head-rest according to the invention are inferred from the foregoing explanations. The sleeves 2a, 2b are first inserted into the tubes 3a, 3b until the resilient teeth l9a, l9b are locked under the lower edge of tubes 3a, 3b (Figures 1 and 2). A correct positioning in rotation is ensured by the interaction between the projections 21a, 21b inserted into the notches 22a, 22b. Thereafter, the legs la, 1b are locked by means of the pins 17a, 17b on the intermediate elements 5a, 5b. The pins, by penetrating into the orifices 16a, 16b of the legs and the apertures 18a, 18b of the intermediate elements, ensure the axial locking of the legs of the U-shaped member 1 with respect to the intermediate elements while at the same time allowing a certain rotation of the intermediate elements about the mounting axis. The ends 9a, 9b of the springs 8a, 8b are then inserted into the orifices 10a, 10b of legs la, lb, whereas their other end 1 lea, 1 lib is inserted into a passage 12a, 12b of the intermediate elements 5a, 5b ensuring the torsional return of the said intermediate elements about their mounting axis to a fixing position at one end of the apertures 18a, 18b. This fixing position is such that the tongues 6 of the intermediate elements are located opposite the rack teeth 7 provided within the sleeves 2a, 2b. Thereafter, the springs 23a, 23b are placed in the sleeves 2a, 2b. The head-rest is then inserted, with its intermediate elements 5a, 5b axially locked on the legs la, ib, by rotating the intermediate elements against the action of the springs 8a, 8b from the fixing position to a second position limited by the other ends of the apertures 18a, 18b, so that the projections 6 are clear of the rack teeth 7. When the head-rcst is in the desired position in height, the intennediate elements 5a, 5b are released and the springs 8a, 8b rotate the intermcdiate elements so as to cause the projections 6 to engage the corresponding rack teeth 7, thus locking the headrest in the selected position in height In a modification of the head-rest assembly according to the invention, the vertical locking of the head-rest may be provided on only one leg such as for example la, in which case the non-lockable leg lb slides freely in a sleeve (not shown) inserted in the tube 3b and replacing the mating members 2b, 5b. WHAT WE CLAIM IS

1. A head-rest assembly for a seat, comprising a head-rest, a pair of legs extending from the head-rest, a sleeve for each leg for mounting on the seat and an intermediate element interposed between at least one of the legs and its respective sleeve, said intermediate element being axially fixed with respect to said leg and axially slidable with respect to said sleeve, and said intermediate element being provided with axially spaced projections adapted to engage complementary axially spaced teeth provided in said sleeve and being rotatable relative to said sleeve about the axis of said leg between two positions, in one of which said complementary projections and teeth are engaged to axially lock said intermediate element with respect to said sleeve, and in the other of which the complementary projections and teeth are freed to permit said intermediate element to slide with respect to said sleeve to adjust the height of the head-rest, a return spring being provided to urge the complementary projections and teeth into engagement.

2. An assembly as claimed in Claim 1, wherein the projections on each intermediate element are formed as teeth or pins.

3. An assembly as claimed in Claim 1 or
Claim 2, wherein said intermediate element is axially fixed with respect to its respective leg by means of a pin extending transversely through apertures in said intermediate element and said leg, the apertures being such that said intermediate element is rotatable about said leg between said two positions.

4. An assembly as claimed in any one of
the preceding claims, wherein the return spring is a torsion spring having one end inserted into an orifice in said leg and the other end introduced into a passage provided in said intermediate element.

5. An assembly as claimed in any one of the preceding claims, further comprising a helical compression spring mounted under said intermediate element for abutting against a portion of the seat or abutting against said sleeve to compensate at least partially for the weight of the head-rest.

6. An assembly as claimed in any one of the preceding claims, wherein said sleeve is adapted to engage a portion of the seat resiliently and is provided with means to lock the sleeve in axial and angular position with respect to the seat.

7. An assembly as claimed in any one of the preceding claims, wherein the legs are formed by legs of an inverted U-shaped member and a plate is provided to strengthen an upper portion of the inverted U-shaped member, the plate and the upper portion being embedded in the head-rest.

8. An assembly as claimed in any one of the preceding claims, wherein the other leg is not provided with a said intermediate element and is freely slidable in its respective sleeve.

9. An assembly as claimed in any one of
Claims 1 to 7, wherein both legs are provided with a said intermediate element and either leg can be mounted in either sleeve so that the head-rest is reversible.

10. An assembly as claimed in Claim 9, wherein the head-rest is asymmetric having a more bulging face and a less salient face.

11. A combination of a vehicle seat and a head-rest assembly as claimed in any one of the preceding claims, wherein a pair of upstanding tubes are fixed to a structural part of the seat squab, each sleeve resiliently engaging a respective one of the tubes.

12. A head-rest assembly substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.

13. A combination of a vehicle seat and a head-rest assembly substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings.

GB18866/77A
1976-06-24
1977-05-05
Head-rest assemblies vehicle seats

Expired

GB1577776A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

FR7619260A

FR2355483A1
(en)

1976-06-24
1976-06-24

HEADREST FOR SEATS ESPECIALLY OF MOTOR VEHICLES

Publications (1)

Publication Number
Publication Date

GB1577776A
true

GB1577776A
(en)

1980-10-29

Family
ID=9174824
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB18866/77A
Expired

GB1577776A
(en)

1976-06-24
1977-05-05
Head-rest assemblies vehicle seats

Country Status (2)

Country
Link

FR
(1)

FR2355483A1
(en)

GB
(1)

GB1577776A
(en)

Cited By (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2207346A
(en)

1987-07-10
1989-02-01
Keiper Recaro Gmbh Co
Height adjustable head rest

DE29706460U1
(en)

1997-04-11
1997-07-10
Lienemann Johann

Device for supplementing a headrest

GB2393388A
(en)

2002-09-06
2004-03-31
Pro Cord Spa
Chair backrest

Families Citing this family (6)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS58135326U
(en)

1982-03-09
1983-09-12
アイシン精機株式会社

car seat frame

FR2557935B1
(en)

1984-01-06
1986-05-16
Itw De France

STEP-BY-STEP POSITIONING DEVICE WITH RETURN TO THE INITIAL POSITION OF TWO MECHANICAL ORGANS MOUNTED WITH RELATIVE MOVEMENT

DE3510863A1
(en)

1985-03-26
1986-10-09
Eugen Otto 4010 Hilden Butz

HEADREST

JPH066758Y2
(en)

1989-03-31
1994-02-23
池田物産株式会社

Headrest device

FR2734216B1
(en)

1995-05-16
1997-07-25
Matra Automobile

DEVICE FOR ADJUSTING THE HEIGHT OF A HEADREST ON THE BACKREST OF A SEAT, AND HEADREST SUPPORT BEING PART OF SUCH A DEVICE

US5788250A
(en)

1996-03-25
1998-08-04
Lear Corporation
Headrest guide sleeve

1976

1976-06-24
FR
FR7619260A
patent/FR2355483A1/en
active
Granted

1977

1977-05-05
GB
GB18866/77A
patent/GB1577776A/en
not_active
Expired

Cited By (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2207346A
(en)

1987-07-10
1989-02-01
Keiper Recaro Gmbh Co
Height adjustable head rest

GB2207346B
(en)

1987-07-10
1990-12-05
Keiper Recaro Gmbh Co
Headrest height adjuster

DE29706460U1
(en)

1997-04-11
1997-07-10
Lienemann Johann

Device for supplementing a headrest

GB2393388A
(en)

2002-09-06
2004-03-31
Pro Cord Spa
Chair backrest

GB2393388B
(en)

2002-09-06
2005-04-13
Pro Cord Spa
Chair backrest

Also Published As

Publication number
Publication date

FR2355483B1
(en)

1980-05-30

FR2355483A1
(en)

1978-01-20

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