DE102009003089A1 - Holding device for releasable attachment to a car seat and method for their disassembly and assembly - Google Patents

Abstract

The present invention relates to a holding device for releasable attachment to a headrest holder of a car seat with a receiving unit for receiving at least one article, in particular a garment, and a fastening device with at least one engagement element and a spreading element. According to the invention, the engagement element has a winding with an inner diameter and a free opening, wherein the inner diameter and the free opening are substantially equal to or greater than a width of the headrest mount provided therefor. Furthermore, the present invention relates to a method for attaching such a holding device to a headrest mount, in which an engagement element is brought into connection with the headrest mount and is clamped by a spreading element, wherein according to the invention the headrest mount is wrapped by the engagement element.

Description

The The present invention relates to a releasable holding device Attachment to a headrest mount of a car seat, with a receiving unit for receiving at least one object, in particular a garment, and a fastening device with at least one engagement element and a spreading element; such as a method of attaching such a holding device to a Headrest mount, in which an engagement element with the headrest mount and over an expansion element is clamped.

From the DE 297 00 423 U1 is a holding device, in particular a clothes holder, with a receiving element having at least one means for receiving at least one garment and at least one support element for mounting the holding device to a vehicle seat known. Each support element is associated with at least one fastening means which is designed for releasable attachment to a headrest mount of a vehicle seat. The disadvantage here is that the fasteners must be made very solid in order to withstand the stresses, especially when holding multiple garments can. Furthermore, the holding device, in particular in the region of the fastening means, consists of a plurality of individual parts which have to be connected to one another within the scope of a complex production process. As a result, the increased cost of materials and the complex manufacturing process result in significant production costs. Furthermore, it proves disadvantageous that in known holding devices, in particular the heavily stressed fasteners for cost reduction are made of plastic and cancel as a result of fatigue after repeated use or at higher loads, for example, several garments. A compensation of this problem is possible in known solutions exclusively at the expense of manufacturing costs.

It is therefore an object of the present invention, a holding device for releasable attachment to a headrest mount to create a car seat, which produce inexpensive as well as a sturdy and wear-free connection with one Ensures headrest support of a car seat, as well as being quickly assembled and disassembled.

The Task is solved by a holding device for releasable Attachment to a headrest mount of a car seat and by a method for fixing such a holding device with the features of the independent claims.

According to the invention the holding device for releasably attaching to a Headrest mount of a car seat a pickup unit for receiving at least one article, in particular a garment and a fastening device. The fastening device comprises at least one engagement element and a spreading element. The Engagement element has a winding with an inner diameter and a free opening, wherein the inner diameter and the free opening is substantially equal to or larger a width of the provided headrest mount are. Advantageously, the holding device can be very fast be mounted on the headrest mount of the car seat, by the engagement element initially twisted in such a way Headrest mount is aligned that the headrest mount through introduced the free opening of the engagement element can be. By the rotation of the engagement element relative to the headrest mount the engagement element over its turn form-fitting with the headrest mount connected. The fixation of the holding device on the headrest mount takes place by the expansion element, which the engagement element with the purpose for NEN headrest mount in Transverse strained. In addition to the quick and easy installation a further significant advantage of the invention is that the turn of the engagement element very inexpensive workpiece einteilein be made of a, in particular made of spring steel wire can. The engagement element thus provides in contrast to the prior Technique a very durable and stable connection between holding device and headrest mount of car seat that despite Minimal use of material due to the winding of the engagement element high forces can absorb in the transverse direction, in the application represents the main load direction.

As well It brings advantages when the engagement element and / or the receiving unit are resilient. This will be particular achieved in that the engagement element and / or the receiving unit made of spring steel. This is advantageously a more stable connection between holding device and headrest mount ensures that the engagement element with the headrest mount is resiliently clamped.

It is particularly advantageous if the free opening and / or the inner diameter of the turn of the engagement element is slightly smaller than a width of the headrest mount provided for this purpose. Thus, during assembly of the holding device, the turn of the engagement element can be clipped onto the headrest mount, which results in a more stable connection between the engagement element and the headrest mount provided therefor, as well as an immediate fixation of the one causes the handle element on the headrest mount.

In a further advantageous embodiment of the invention, the Engagement element at least one, preferably two support areas on, so that in case of loading or when spreading the engagement element on the headrest mount via frictional engagement is fixed by pushing the support areas over the force is introduced into the headrest mount.

Especially It is advantageous if the support area in the direction of intended headrest bracket inclined is because thereby the engagement element with the designated Headrest holder is additionally braced. In this particularly preferred embodiment of the holding device would the inclined support area at the same time for spreading serve and consequently the engagement element with the headrest mount tense. Thus, advantageously, no additional Spreizelement of needs.

Advantageous In addition, it is when the turn of the engagement element substantially an angular range of 360 ° wraps around. Thus, one is very good positive connection between the engagement element and the provided headrest mount guaranteed. Furthermore, the engagement element at a wrap of 360 ° optionally made of a non-resilient Material exist, as it is still easy with the for provided headrest mount according to the invention Fixing method can be connected without being bent to have to.

In a further advantageous embodiment of the holding device wraps around the turn of the engagement element as an alternative to the previous Feature an angular range of more than 360 °, so the Engagement element with the provided headrest mount is verklippsbar. However, this requires the engagement element be resilient. Advantageously, thus would be an unintentional release of the positive locking Connection between engagement element and the provided headrest mount largely excluded.

Especially It is advantageous if the inner diameter and / or the free opening the winding in its size to different custom designed headrest mounts customizable are so that the application of the holding device does not arise limited to a car seat type. This could be done through flexible Plastic hoses take place on the winding and / or the support areas of the engagement element are pushed.

alternative can the engagement element for the different widths the provided headrest mounts Adapter sleeves have, for enlargement the width of the headrest mount on the headrest mounts can be mounted. Thus, in terms of easy assembly as well a firm connection between headrest mount and Engagement element always an ideal relationship between the inner diameter of the turn of the engaging member and the Width of the provided headrest mount guaranteed.

As well It is advantageous if the engagement element of a non-slip Material is made or coated with a non-slip material is, so that the engagement element even at low bracing forces firmly seated on the headrest mount.

Also it is advantageous if the engagement element is a tilt protection has, so that the engagement element is not unintentional due to occurring longitudinal forces of the Headrest bracket releases.

Advantageous In addition, if the fastening device is a spreading area in which the fastening device by the introduction of the expansion element can be fixed. As a spread area is therefore defines the area in which the causative for fixation Force is introduced.

Especially It is advantageous if the receiving unit a bracket to accommodate a garment, so that sensitive Clothing, in particular suits and costumes, Can be hung in the vehicle without creases. Alternatively or additionally, the receiving unit a Hook, a drink holder or a display holder exhibit.

Especially It is advantageous if the bracket of a flexible Material, in particular spring steel. Thus he can at the same time workpiece integrally at one of its ends an engagement element pronounced with the winding and the support areas have and a spreader with the headrest mount and / or a second bracket to be braced.

It also brings advantages when the expansion element for receiving a garment is convex and / or curved, since it can thus be arranged in the region of the receiving unit. When attaching to a car seat with two headrest mounts, each headrest bracket can thus each be assigned a bracket, wherein at one end of each bracket an engagement member for positive connection with the respective headrest mount would be arranged. The out to take a garment out formed spreading could thus be clamped in the area of the receiving unit between the two brackets, so that they are braced against each other and as a result their respective engagement elements are non-slip fixed on the corresponding headrest mounts.

In this regard, it is particularly advantageous if the expansion element has a groove, which corresponds to at least one bracket. Thus is in the case of a spread a tight fit between spreader and ironing guarantees, so that an unintentional Slipping and resulting despreading largely is excluded. Likewise, it is advantageous that in an alternative Training the groove of the expansion provided for it is to correspond with the headrest mount. This would hide the advantage that the expansion element can be relatively small, making it in the range of Engagement element could be arranged.

Advantageous It is also when at least one bracket with the spreader clipped, screwed and / or glued, because of the reduced Single number of parts facilitates the assembly. Alternatively you can for the same purpose, the spreader and the bracket in one piece be educated.

Advantageous It is also when the expansion element hinged to the bracket is fixed, allowing a simple splaying and loosening the fastening device is guaranteed.

In a further advantageous embodiment of the invention, the Iron on a clip for additional hanging commercial hangers on to already hung Garments do not necessarily wrap to have to.

Especially It is advantageous that the holding device has a longitudinal and has a transverse direction and that for fixing the fastening device the spreader at least one engagement element with the for provided headrest bracket braced in the transverse direction. This ensures that the holding device special firm is fixable on the headrest mount and at the same time can absorb high loads.

In a method according to the invention for fastening a holding device on a headrest mount is an engagement member with the headrest mount in conjunction brought and braced over a spreading element. advantageously, in this case, the headrest mount from the engagement element entwined, making a very stable and at the same time fast and easy to install positive and frictional connection arises between the holding device and the engagement element.

Especially It is advantageous if, for mounting the holding device, the engagement element in a first step relative to the headrest mount so it is twisted that the headrest mount into a free opening a turn of the engagement element can be introduced. After the headrest mount in a second step introduced into the free opening of the Eingriffsele management was, the engaging element in a third step in the opposite Turned back direction, leaving the turn of the engaging element the headrest mount in longitudinal and transverse direction wraps around in a form-fitting manner. For fixing the holding device In a fourth step, the engagement element by means of spreading clamped frictionally with the headrest bracket. Advantageously, in this mounting method, the headrest not attached to the headrest mount from the car seat be done so that the disassembly and assembly very quickly can be.

As well it is advantageous if the headrest mount substantially wrapped in an angular range of 360 ° of the winding will, leaving a firm connection between headrest mount and the engagement element is ensured.

Especially It is advantageous if two headrest mounts attached by means of one respective engagement element bracket and between the two brackets of the holding device the spreader is clamped so that both engagement elements with the headrest mounts are braced. Thus is an undesirable twisting or tilting of the holding device largely excluded by interference.

Further Advantages of the invention are in the following embodiments described. It shows:

1 a rear view of an engaging member and a headrest mount, wherein the engagement member is detached from the headrest mount;

2 a rear view of an attached to a headrest mount engagement element, wherein the winding wraps around an angle of substantially 360 °;

3 a side view of an engaging member, wherein the support portions are inclined in the direction of the headrest mount provided therefor;

4 a rear view of an attached to a headrest mount engagement element, wherein the winding encloses an angular range of more than 360 °;

5 a rear view of an engagement member which is fixed to a headrest mount with adapter sleeve;

6 a rear view of an attached to a headrest mount engagement element with an adapter sleeve;

7 a side view and a plan view of an engagement element with a spreader in conjunction with a headrest mount;

8th a rear view of a holding device attached to a car seat and

9 a plan view and a section through a holding device attached to a car seat.

1 shows an engagement element 1 and a headrest mount 2 , wherein the engagement element 1 from the headrest bracket 2 is solved. The engagement element 1 has a turn 3 with an inner diameter 4 and a free opening 5 on. The inner diameter 4 and the free opening 5 of the engagement element 1 are substantially equal to or greater than a width 6 the headrest mount 2 , Is the engaging element 1 made of a resilient material, in particular spring steel, the free opening 5 and / or the inner diameter 4 the turn 3 alternatively also slightly smaller than the width 6 the designated headrest mount 2 be. Advantageously, thus in the assembled state, a very tight fit of the engagement member 1 on the headrest mount 2 causes, as the engagement element 1 by its slightly smaller turn with the headrest mount 2 is clipped and thereby immediately a frictional connection between the headrest bracket and engagement element is made. The engagement element 1 also has two support areas 7a . 7b on, at each end of the turn 3 are arranged.

For mounting the engagement element 1 on the headrest mount 2 must be the engaging element 1 initially relative to the headrest mount 2 be twisted so that the headrest mount 2 into the free opening 5 the turn 3 of the engagement element 1 can be introduced (see 1 ). After that, the engagement element 1 with the headrest mount 2 and, as in 2 represented relative to the headrest mount 2 twisted so that the support areas 7a . 7b of the engagement element 1 largely parallel to the headrest mount 2 are aligned. In this mounted state wraps around the winding 3 of the engagement element 1 the headrest mount 2 essentially in an angular range of 360 °, so that between engaging element 1 and headrest mount 2 in transverse and longitudinal direction a positive connection is made.

This positive connection is fixed immediately without additional assembly step, if, as mentioned above, the inner diameter 4 of the engagement element 1 slightly smaller than the width 6 the headrest mount 2 as well as the engagement element 1 made of a resilient material. Alternatively or redundantly, the engagement element 1 also over the support areas 7a . 7b with the headrest mount 2 be fixed in accordance with 3 at least one of the support areas 7a . 7b of the engagement element 1 at an angle α, β in the direction of the provided headrest mount 2 is inclined. Thus, the engagement element 1 with the headrest mount 2 over the three bases, support area 7a , Winding 3 and support area 7b , Are clamped, so that a positive and frictional connection is formed.

Furthermore, it is advantageous if the winding 3 of the engagement element 1 according to 4 an angle range of more than 360 ° wraps around. Again, the engagement element must 1 advantageously of a resilient material, in particular spring steel exist. Thus, during assembly of the engagement element 1 according to the inventive method by clipping a positive connection with the headrest mount 2 be made in the longitudinal and transverse directions, so that an unintentional release of the engagement member 1 from the headrest bracket 2 is largely excluded by tilting. At the same time, however, the looped angle range is maximally so great that always a problem-free installation of the engagement element 1 on the headrest mount 2 is guaranteed.

For an optimal positive and frictional connection between the engagement element 1 and headrest mount 2 allowed the width 6 the headrest mount 2 only slightly smaller than the inner diameter 4 of the engagement element 1 , For relatively thin headrest mounts 2 It is advantageous if the inner diameter 4 and / or the free opening 5 the turn 3 in size to different headrest mounts 2 are customizable. This can be like in 5 and 6 represented by adapter sleeves 8th respectively. At the in 5 illustrated embodiment of the adapter sleeve 8th this will increase the width 6 the headrest mount 2 respectively to reduce the inner diameter 4 the turn 3 of the engagement element 1 on the headrest mount 2 assembled. For this purpose, the adapter sleeve 8th in a particularly preferred embodiment of an elastic and non-slip material, in particular rubber or plastic, and have a longitudinal slot over which the adapter sleeve 8th on the headrest mount 2 is aufgeklippst. Age natively, it is also conceivable that the adapter sleeve 8th longitudinally no slot and with disassembled headrest on the headrest mount 2 is plugged.

Alternatively, the adapter sleeve 8th according to 6 a flexible hose that is on the engaging element 1 is deferred so that the support areas 7a . 7b as well as the winding 3 from the adapter sleeve 8th be enclosed. Analogous to the previous embodiment, the width is also here 6 the headrest mount 2 enlarged respectively the inner diameter 4 the turn 3 of the engagement element 1 reduced, so that in terms of a play-free connection between engagement element 1 and headrest mount 2 an ideal ratio between the inner diameter 4 the turn 3 and the width 6 the headrest mount 2 is present. It is particularly advantageous if the engagement element 1 and / or the adapter sleeve 8th made of a non-slip material and / or coated with a non-slip material. This ensures that the engaging element is engaged 1 slipping of the holding device 12 and inadvertent release from the headrest mount 2 is largely excluded.

Alternatively to the previous embodiments, in which the fixation of the engagement element 1 on the headrest mount 2 through a slightly smaller inner diameter 4 , by a wrap angle of the winding 3 of more than 360 ° and / or by the direction of the headrest mount 2 inclined support areas 7a . 7b takes place, the tension of the engagement element 1 with the headrest mount 2 in the 7 illustrated embodiment by a spreader 9 causes. For this purpose, the fastening device has a spreading area 10 on, in which the engagement element 1 in a particularly preferred embodiment consists of spring steel. Furthermore, the engagement element 1 in the spread area 10 from the headrest bracket 2 tilted away, leaving the spreader 9 in the spread area 10 movable on the engagement element 1 is stored, the engagement element 1 with the headrest mount 2 braced. For this purpose, the spreading element 9 in the direction of the support area 7a pressed. In the present embodiment, the bracing is carried out primarily by the expansion element 9 , the support area 7b and the turn 3 , In the plan view of 7 it can be seen that the expansion element 9 in the following a tilt protection 11a . 11b having. In the expanded state, it is thus largely ruled out that the engagement element 1 due to interference with the headrest mount 2 twisted and thus unwanted solves.

8th shows a rear view of a particularly preferred embodiment of a holding device 12 for releasable attachment to a headrest mount 2a . 2 B a car seat 13 with a recording unit 14 for receiving at least one garment. Each headrest bracket 2a . 2 B is in each case an engagement element 1a . 1b assigned, at one of its ends in a hanger 15a . 15b pass. The two brackets are curved to accommodate garments and workpiece two parts. To unintentional release of the holding device 12 from the car seat 13 largely exclude, according to 9 both straps 15a . 15b in the area of the recording unit 14 each at one of its ends a tilt protection 11a . 11b on. The coat hanger 15a has in addition to hanging commercially available hangers a peg 17 in order to avoid a forced hanging already hung on external hangers garments can.

The two engagement elements 1a . 1b are mutually mirrored, so that the engagement element 1a with his strap 15a for mounting on the headrest mount 2a is rotated to the right and the engagement element 1b with his strap 15b for mounting on the headrest mount 2 B is turned to the left. This has the advantage that when the anti-tip device is engaged 11a . 11b an unintentional release of the holding device 12 from the car seat 13 is largely excluded. Alternatively, the engagement elements 1a . 1b be congruent, so that for de- and Mon days of the holding device 12 both engagement elements 1a . 1b have to be turned in the identical direction. This would have the advantage of easier mounting of the holding device 12 at the car seat 13 result.

For fixing the holding device 12 is between the temples 15a and 15b a spreading element 9 curious, so that the engaging elements 1a . 1b with the headrest mounts 2a . 2 B tense. Out 9 it can be seen that by the expansion element 9 the coat hanger 15a from the car seat 13 is pushed away as well as the strap 15b in the opposite direction to the car seat 13 is pushed. It is particularly advantageous that the bracket 15a . 15b , hence the spread area 10 (please refer 7 ) of the holding device 12 form, are formed of a flexible material, in particular spring steel. As the spreader 9 in the illustrated preferred embodiment at the same time part of the receiving unit 14 is, has the spreader 9 a convex and curved shape on, so that it together with the temples 15a . 15b is suitable for receiving garments. Furthermore, the spreading element 9 at its peripheral edge a groove 16 on top, with the straps 15a . 15b corresponds. Thus, a slipping of the hanger 15a . 15b in relation to the expansion element 9 largely excluded.

In a continuative, in the figures Not illustrated embodiment of the invention, it is also conceivable that at least one bracket 15a . 15b with the expansion element 9 clipped, screwed and / or glued. Alternatively, the spreader could 9 with one of the hangers 15a . 15b also be formed in one piece. Likewise, a lighter assembly of the holder device would 12 by a hinged expansion element 9 be favored, for example, by hinges on one of the hangers 15a . 15b is appropriate.

The The present invention is not limited to that shown and described Embodiment limited. Modifications in the The scope of the claims are also possible like a combination of features, even if they are in different embodiments are shown and described.

1

engaging member

2

Headrest mount

3

convolution

4

inner diameter

5

Free opening

6

width

7

support areas

8th

adapter sleeves

9

spreader

10

expansion area

11

tilt protection

12

holder

13

car seat

14

recording unit

15

hanger

16

groove

17

insertion flap

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• DE 29700423 U1 [0002]

Claims (25)

Holding device for releasable attachment to a headrest mount ( 2 ) of a car seat ( 13 ), with a recording unit ( 14 ) for receiving at least one article, in particular a garment, and a fastening device having at least one engagement element ( 1 ) and a spreading element ( 9 ), characterized in that the engagement element ( 1 ) a turn ( 3 ) with an inner diameter ( 4 ) and a free opening ( 5 ), wherein the inner diameter ( 4 ) and the free opening ( 5 ) substantially equal to or greater than a width ( 6 ) of the provided headrest mount ( 2 ). Holding device according to the preceding claim, characterized in that the engagement element ( 1 ) and / or the recording unit ( 14 ) are resilient. Holding device according to one or more of the preceding claims, characterized in that the free opening ( 5 ) and / or the inner diameter ( 4 ) of the winding ( 3 ) of the engagement element ( 1 ) is slightly smaller than a width ( 6 ) of the provided headrest mount ( 2 ). Holding device according to one or more of the preceding claims, characterized in that the engagement element ( 1 ) at least one, preferably two support areas ( 7 ) having. Holding device according to one or more of the preceding claims, characterized in that the support area ( 7 ) in the direction of the designated headrest mount ( 2 ) is inclined, so that the engagement element ( 1 ) with the provided headrest mount ( 2 ) is clamped. Holding device according to one or more of the preceding claims, characterized in that the winding ( 3 ) of the engagement element ( 1 ) wraps around an angle of 360 ° substantially. Holding device according to one or more of the preceding claims, characterized in that the winding ( 3 ) of the engagement element ( 1 ) wraps around an angular range of more than 360 °, so that the engagement element ( 1 ) with the provided headrest mount ( 2 ) is verklippsbar. Holding device according to one or more of the preceding claims, characterized in that the inner diameter ( 4 ) and / or the free opening ( 5 ) of the winding ( 3 ) in size to different provided headrest mounts ( 2 ) are customizable. Holding device according to one or more of the preceding claims, characterized in that the engagement element ( 1 ) for the different widths ( 6 ) of the provided headrest mounts ( 2 ) Adapter sleeves ( 8th ) having. Holding device according to one or more of the preceding claims, characterized in that the engagement element ( 1 ) is made of a non-slip material or coated with a non-slip material. Holding device according to one or more of the preceding claims, characterized in that the engagement element ( 1 ) a tilt protection ( 11 ) having. Holding device according to one or more of the preceding claims, characterized in that the fastening device has a spreading region ( 10 ) having. Holding device according to one or more of the preceding claims, characterized in that the receiving unit ( 14 ) at least one, preferably two hoops ( 15 ) for receiving a Kieldungsstücks. Holding device according to one or more of the preceding claims, characterized in that the bracket ( 15 ) is formed of a flexible material, in particular spring steel. Holding device according to one or more of the preceding claims, characterized in that the expansion element ( 9 ) is designed to receive a garment convex and / or curved. Holding device according to one or more of the preceding claims, characterized in that the expansion element ( 9 ) a groove ( 16 ) provided with at least one bracket ( 15 ) and / or a headrest mount ( 2 ) corresponds. Holding device according to one or more of the preceding claims, characterized in that at least one bracket ( 15 ) with the expansion element ( 9 ) clipped, screwed and / or glued. Holding device according to one or more of the preceding claims, characterized in that the expansion element ( 9 ) and at least one bracket ( 15 ) are integrally formed. Holding device according to one or more of the preceding claims, characterized in that the expansion element ( 9 ) hinged to at least one bracket ( 15 ) is attached. Holding device according to one or more of the preceding claims, characterized in that the bracket ( 15 ) a plug-in flap ( 17 ) for additional hanging commercial hangers. Holding device according to one or more of the preceding claims, characterized in that the holding device ( 12 ) has a longitudinal and a transverse direction and that for fixing the fastening device, the expansion element ( 9 ) at least one engagement element ( 1 ) with the provided headrest mount ( 2 ) braced in the transverse direction. Method for fastening a holding device ( 12 ) on a headrest mount ( 2 ), in which an engagement element ( 1 ) with the headrest mount ( 2 ) and via a spreading element ( 9 ), characterized in that the headrest mount ( 2 ) of the engagement element ( 1 ) is entwined. Method according to the preceding claim, characterized in that - the engagement element ( 1 ) in a first step relative to the headrest mount ( 2 ) is twisted so that the headrest mount ( 2 ) into a free opening ( 5 ) a turn ( 3 ) of the engagement element ( 1 ), - that the headrest support ( 2 ) in a second step into the free opening ( 5 ) of the engagement element ( 1 ), - that the engagement element ( 1 ) is turned back in the opposite direction in a third step and - that for fixing the holding device ( 12 ) in a fourth step the engagement element ( 1 ) by means of spreading element ( 9 ) with the headrest mount ( 2 ) is tightened. Method according to one or more of the preceding claims, characterized in that the headrest mount ( 2 ) substantially in an angular range of 360 ° from the winding ( 3 ) is entwined. Method according to one or more of the preceding claims, characterized in that on two headrest mounts ( 2a . 2 B ) by means of a respective engagement element ( 1a . 1b ) Hanger ( 15a . 15b ) and between the two temples ( 15a . 15b ) of the holding device ( 12 ) the spreading element ( 9 ) is clamped so that both engagement elements ( 1a . 1b ) with the headrest mounts ( 2a . 2 B ).