DE102017201972A1 - Swiveling armrest with locking mechanism - Google Patents

Abstract

The invention relates to an armrest (10) for a motor vehicle, wherein the armrest (10) has a housing body (11) and an armrest (12) pivotally mounted on the housing body (11). At this arm support (12) a rotatably mounted bolt (20) with a bolt tongue (21) is provided, which cooperates in a locking position with a closing plate (13) on the housing body (11), whereby pivoting the arm support (12) away from the housing body (11) is blocked. According to the invention, at least one support bracket (30) is mounted on the arm support (12) which makes contact with the bolt (20) upon application of a force for pivoting the arm support (12) away from the housing body (11) in the locking position of the bolt (20). has and so a support force (40) in the direction of the armrest (12) on the bolt (20) applies.

Description

The invention relates to an armrest for a motor vehicle according to the preamble of claim 1, wherein the armrest has a housing body and a pivotally mounted on the housing body armrest.

Typically, for example, center consoles of motor vehicles on such an armrest, in which a padded armrest is pivotally mounted via a hinge. The armrest is in the closed position on a lower storage space and closes it in this way. The armrest can be swung up to gain access to the storage room.

In order to avoid damage when handling such armrests, various measures are known. For example, this describes US 7,100,242 B2 a body such as the armrest of a motor vehicle which is rotatable about a predetermined maximum rotation range via a hinge bracket rotatably mounted in a hinge. The armrest can be locked by stops in different positions of use. In particular, such a stop can also be an end stop, with considerable forces acting on the armrest when it is pivoted against an end stop. To prevent damage to the armrest at an end stop, the hinge bracket is mounted on a Entrastelement in the armrest. When a certain limit force is exceeded, the armrest releases from the hinge bracket and releases it so that damage to the hinge should be prevented.

The DE 202 07 285 U1 describes an armrest with a hinge that has two hinge parts. A first hinge part is pivotable relative to a second hinge part. Further, in the hinge, a body is provided, which is adapted for the elastic and damping reception of a force acting on the second hinge part from the first hinge part. In this way, a force acting on the hinge force can be intercepted, which is in particular a force which is applied to an armrest when it is in the lower closed position. Thus, it should be prevented that a hinge is damaged when a passenger of the motor vehicle is too strong relies on a closed armrest. Also the US 2003/0234554 A1 describes, for example, such a security mechanism.

Often, a latch mechanism is also provided on armrests to hold an arm rest in the closed position. This latch mechanism must be released to raise the armrest and access the center console. Typically, this must be done manually pressure on a specific grip surface on the locking mechanism to move a rotatably mounted on the armrest latch from a locking position in which it cooperates with a closing plate on the center console. When this is done, the armrest can be raised. When closing the armrest, the latch engages again in the locking position on the closing plate.

In this case, however, incorrect handling of the armrest can occur if the upper armrest is raised, for example, without the locking mechanism having previously been released. Even a partially released locking mechanism can be problematic when lifting the armrest. Such operations may result in a force applied to the latch by a striker plate, which may result in deformation, in particular, of the latch or latch joint.

However, the known safety measures on armrests do not offer suitable protection against such damage. In view of the cited prior art, the area of the armrests thus still offers room for improvement, in particular on center consoles of a motor vehicle.

The invention is therefore an object of the invention to improve an armrest for a motor vehicle with a locking mechanism to the effect that components of the locking mechanism are not damaged in case of improper handling of the armrest.

According to the invention the object is achieved by an armrest with the features of claim 1. It should be noted that the features listed in the following description and measures in any technically meaningful way can be combined with each other and show other embodiments of the invention. The description additionally characterizes and specifies the invention, in particular in connection with the figures.

The armrest according to the invention for a motor vehicle has a housing body and a pivotally mounted on the housing body armrest. The housing body may for example be part of a center console of the motor vehicle and comprise one or more cavities for stowing objects. In this case, the housing body is below and the armrest on top of the housing body. The terms "bottom" and "top" for this invention refer to the location of components or surfaces in the installation situation an armrest according to the invention in a motor vehicle.

On the arm support a rotatably mounted latch is provided with a locking tongue, which cooperates in a locking position with a closing plate on the housing body, whereby a pivoting of the armrest is blocked away from the housing body. This locking mechanism may be performed in a known manner and be manually operable to cancel the locking position and to be able to pivot the armrest away from the housing body when handled properly.

According to the invention at least one support bracket is attached to the arm support, which has contact with the bolt when applying a force for pivoting the armrest away from the housing body in the locking position of the bolt and so applies a supporting force in the direction of the armrest on the bolt. In case of improper handling of the armrest, the support bracket thus exerts a supplementary support force from this direction on the bolt. Under an improper handling of the armrest is understood in the context of this invention that a force for lifting the armrest is applied to this, although the bolt is still completely or at least partially in the locking position, so that the interaction of the bolt tongue of the bolt with the closing plate the housing body prevents a proper lifting of the armrest.

The support bracket is attached to the same component on which a manual force is exerted for lifting the armrest, namely on the armrest. Therefore, together with the armrest, the support bracket is also raised, which acts on a suitable location on the bolt, so as to exert a supporting force in the direction of the armrest on him. The support bracket can be designed in different ways and attack at different points on the bolt or have contact with him.

In one embodiment of the invention, upon application of a force for pivoting the armrest away from the housing body in the locking position of the latch, the support bar has contact, in particular on the side facing the latch tongue, away from the armrest. This means that the support bracket contacts the locking tongue on a surface which is remote from the pivot of the bolt and the closing plate, so that from the support bracket, a force can be applied to the bolt tongue, which acts counter to the force applied by the closing plate force. The support bracket acts from below on the bolt tongue and can support it from below. In this way, in particular the bearing forces, which act in the region of the rotary joint of the bolt, because bearing forces, which arise by the tensile force on the armrest in the pivot of the bolt can be reduced by the opposite support force. This relieves the pivot, reducing the risk of damage.

The bolt tongue is a particularly suitable contact point for the support bracket, since the force of the closing plate acts on it, which can be lifted so completely or at least in large part by the opposite support force of the support bracket. However, the support bracket can also act at other locations of the bolt. For example, the bolt below or above the bolt tongue could have a projection on which the support bracket attacks. A support force in these areas would relieve the bolt tongue and the pivot of the bolt.

The at least one support bracket can be, for example, a hook-shaped component which engages under the bolt tongue or another area of the bolt. There may also be two such hooks to engage under a portion of the latch from opposite sides. Depending on the arrangement and shape of the bolt, it may also be only one or two projections in the side walls of the armrest, which are arranged under the bolt tongue lying between these side walls or another region of the bolt.

In a preferred embodiment of the invention, the support bracket is U-shaped and surrounds in the locking position, at least the bolt tongue. Since such a support bracket is connected via its two side webs fixed to the armrest, while the bolt is rotatably mounted on the armrest, the bolt tongue for locking and unlocking operations between the side webs of the U-shaped support bracket can move. The dimensions are therefore suitably chosen accordingly. However, in one possible embodiment of the invention, the support bracket has no contact with the bolt tongue unless the armrest is raised improperly without first releasing the latch mechanism. Thus, no unwanted friction between the support bracket and the bolt tongue takes place in normal operation. This could otherwise affect the sense of quality in the handling of the armrest.

In a U-shaped support bracket can therefore lie in an embodiment of the invention, the central web of the support bracket in the locked position of the bolt at a distance below the bolt tongue. However, this distance is then very small and is of the order of 0.1 to 0.5 mm. This distance can be overcome once the Armrest is raised without the latch mechanism was previously solved. This is possible, for example, if the construction of the armrest with the locking mechanism is chosen so that the support bracket in this case can be raised slightly further than the bolt, which is blocked by its interaction with the closing plate. For example, the contact between the support bracket and bolt tongue can be made as soon as a game within the pivot of the bolt has been overcome.

Alternatively, it may be provided in another embodiment that the at least one support bracket already has easy contact with the underside of the bolt tongue even with proper handling of the armrest. The bolt tongue is then preferably designed so that it easily slides along at this contact point in their movement between locking and unlocking position. For this purpose, the bolt tongue, for example, on the side of the contact point S between the support bracket and the bolt tongue have at least one bevelled surface.

The position of a contact point S between the support bracket and the bolt tongue is preferably selected so that reduce the forces on the components of the locking mechanism advantageous in improper handling of the armrest. For this purpose, the contact point S is preferably located directly below the contact point R between the bolt tongue and the closing plate. This means that a horizontal distance X between the contact point S from the support bracket to the bolt tongue and the contact point R from the bolt tongue to the closing plate is zero. In this case, the horizontal distance X is defined in the installed state of the armrest. In this embodiment of the invention, the support force of the support bracket has the same lever arm with respect to the pivot joint as the force on the bolt tongue, which is generated by the tensile force on the armrest. However, the support force acts in the opposite direction. Thus, the resulting bearing forces in the hinge can be significantly reduced.

Often, however, the design of an armrest of a motor vehicle does not allow an embodiment in which the support bracket can engage directly under the point of contact between the bolt tongue and the closing plate. In alternative embodiments of the invention, therefore, a horizontal distance X between the contact point S from the support bracket to the bolt tongue and the contact point R from the bolt tongue to the closing plate may also be greater than zero. For example, the contact point S of the support bracket to the bolt tongue while in the locking direction of the bolt seen before the contact point R of the bolt tongue to the closing plate. But he can also be behind it.

While the support bracket does not engage directly under the point of contact R from the bolt tongue to the striker plate, the support force has a different lever arm with respect to the hinge than the force on the bolt tongue created by the pulling force on the armrest. As a result, a bearing force remains in the hinge. With appropriate design of the locking mechanism, however, this bearing force can be substantially reduced even in these embodiments. For this purpose, the horizontal distance X can be chosen as small as possible. It is particularly advantageous if the distance X is substantially smaller than a vertical distance Y between the pivot of the bolt and the contact point R. For example, the distance X is about 20% of the magnitude of Y, but may be even smaller , The amounts mentioned are of course only to be understood as examples. Further, the vertical distance Y is defined in the installed state of the armrest.

In one embodiment of the invention, the contact point S is in the locking direction of the bolt seen in front of the contact point R. The locking direction is in this case the direction in which moves the bolt tongue for locking on the closing plate. Seen in this direction on the closing plate, the support bracket is then in front of the closing plate.

In order to integrate the support bracket without affecting the operation or an attractive appearance in the armrest, the housing body may have corresponding recesses for receiving the support bracket. For example, may be formed on the outside of the housing body, an inwardly directed receiving area in which the support bracket is received when the armrest is in the closed position. In this way, it can be lifted together with the armrest, but is received in the closed rest position of the armrest within the housing body. So that the support bracket is not visible from the outside, the bolt below the bolt tongue may have a covering area which covers the support bracket at least in this area. Thus, the entire armrest, despite the additional component in the form of the support bracket on an attractive appearance. The operation of the support bracket is not visible from the outside, but the support bracket unfolds only within the armrest its beneficial effect.

• 3 eine schematische Seitenansicht einer Armlehne gemäß einer Ausführungsform der Erfindung,
• 4 eine vergrößerte Detailansicht eines erfindungsgemäßen Stützbügels,
• 5 eine vergrößerte Detailansicht einer ersten Ausführungsform eines erfindungsgemäßen Riegels mit den daran angreifenden Kräften;
• 6 eine vergrößerte Detailansicht einer zweiten Ausführungsform eines erfindungsgemäßen Riegels mit den daran angreifenden Kräften; und
• 8 den Kraftverlauf bei einer Armlehne der Erfindung.

1 showed a schematic representation of an armrest according to the prior art, wherein 2 an armrest with a latch for an armrest according to 1 shows. 7 shows a force curve of an armrest according to the prior art. Further advantageous embodiments of Invention are disclosed in the subclaims and the following description of the figures. Show it

• 3 a schematic side view of an armrest according to an embodiment of the invention,
• 4 an enlarged detail view of a support bracket according to the invention,
• 5 an enlarged detail of a first embodiment of a bolt according to the invention with the forces acting thereon;
• 6 an enlarged detail of a second embodiment of a bolt according to the invention with the forces acting thereon; and
• 8th the force curve in an armrest of the invention.

In the different figures, the same parts are always provided with the same reference numerals, which is why these are usually described only once.

In 1 is an armrest 10 ' represented for motor vehicles, as it is known in the same or similar manner from the prior art and thus brings certain problems. The armrest 10 ' has a lower housing body 11 on, in particular, has a cavity in order to store objects therein. At this housing body 11 is an armrest at the top 12 pivoted. This is about a joint 14 realized. If it is a center armrest, this is arranged between two seats, so that passengers of the motor vehicle can rest on this armrest. The armrest 12 is therefore usually upholstered.

To access the cavity in the housing body 11 to get the upper armrest 12 over the joint 14 be swung upwards. The joint 14 is expediently in the direction of travel of the motor vehicle behind, so that the armrest 12 is pivoted to the rear when lifting. For this purpose, a person attacks the armrest 12 at its front end 15 and pull her up. In the embodiment of the 1 However, a locking mechanism is provided which blocks this movement in the locked position and thus prevented.

This locking mechanism has a latch 20 on which one over a joint 23 rotatable on the armrest 12 is stored. These are areas of the bolt 20 in the 1 only shown in phantom to show that they are located within the armrest body. The externally visible parts, however, are shown with solid connecting lines. 1 shows the bar 20 in the locking position, in which he movement of the armrest 12 prevented upwards.

The bolt 20 is, for example, angular, with the hinge 23 is at the apex of this angle. At the end of a first leg of this angle is a bolt tongue 21 , which with a closing plate 13 interacts with the housing body 11 connected or formed on this. This connection between the housing body 11 and the closing plate 13 is in the 1 however, it is well known to those skilled in the art that various forms of striker plates can be used for this purpose.

In the illustrated locking position of the locking mechanism is the bolt tongue 21 below the closing plate 13 , Will now be a manual upward force on a front area 15 the armrest 12 exercised, the armrest can 12 not be raised, as the closing plate 13 the bolt tongue 21 gets in the way. This tensile force is up in the 1 through an arrow 50 characterized. To the armrest 12 being able to lift is the other leg of the angled latch 20 as a kind of operating handle 22 trained, which manually from below against the armrest 12 can be pulled. A passenger of the motor vehicle puts his arm on the armrest 12 and can with the fingers of the hand so under the armrest 12 grab that he has the operating handle 22 can pull up in this area. This causes the bolt to rotate 20 in the joint 23 and the bolt tongue 21 is under the closing plate 13 pulled away. In this unlocked position of the bolt 20 can the armrest 12 over the joint 14 be swung upwards. If it is pivoted back down, the bolt tongue 21 snaps back below the strike plate 13 one. This is typically a return mechanism with, for example, at least one spring 24 provided, which from the inside of the operating handle 22 rests and the bolt 20 pushes back into the locked position.

However, if the locking mechanism is not released in the manner described before a tensile force 50 on the front area 15 the armrest 12 is applied results from the blocking of the bolt tongue 21 a force on the bolt tongue 21 in the opposite direction. This power is in the 1 through an arrow 60 characterized. Because the armrest 12 is pulled up, the latch 20 however by the closing plate 13 is subjected to a pulling force down, at the same time results in a force on the hinge 23 of the bolt. Thus, it can cause improper handling of the armrest to damage the bolt tongue 21 and / or the joint 23 come. Also the closing plate 13 can be damaged.

2 shows an armrest 12 according to the 1 and a bar shown separately 20 , The swivel joint for rotatably supporting the bolt 20 on the armrest 12 For example, by two lateral bolts 23 at the bar 20 and two corresponding side shots on the armrest 12 educated. Of these is in the 2 a recording 23 ' shown. Bolts 23 of the bolt 20 are rotatable in the recordings 23 ' the armrest 12 stored so that the latch 20 is rotatable in a plane that is the plane of the drawing 2 equivalent. In case of improper handling of the armrest 12 There are different forces on the components of the locking mechanism, which can lead to damage this. 2 shows a force 60 on the bolt tongue 21 , which from the traction 50 upwards on the armrest results. Furthermore, there is a force 70 from above on the recordings 23 ' on the armrest 12 because the bolts 23 of the bolt 20 be pulled down. Consequently, a force also occurs 70 ' up on the bars 23 at the bar 20 on.

The tensile force 50 However, it acts at a greater distance L to the joint 14 the armrest 12 as the forces 70 and 70 ' on the joint 23 . 23 ' of the bolt 20 because the joint 23 . 23 ' of the bolt 20 at a lesser distance I to this joint 14 lies. The forces on the hinge 23 . 23 ' of the bolt 20 are therefore greater than the actual tensile force on the armrest 12 ,

3 shows an armrest 10 in an embodiment with a locking mechanism, as basically in the 1 and 2 is described. This is a bar 20 shown again in the locking position, in which he manual lifting the armrest 12 blocked. However, the locking mechanism has the improvement according to the invention that components of the locking mechanism are not damaged in case of improper handling of the armrest. This is especially true for the hinge 23 . 23 ' , This is indicated by the armrest 12 a downwardly directed support bracket 30 on. This support bracket 30 is U-shaped and is made by two side bars 32 and 33 formed by a lower center bar 31 are interconnected, as the enlarged detail view of the 4 can be seen. The bolt 20 is for better representation of the support bracket in the 4 not shown, taking a picture 23 ' is shown on the armrest, in which the bolt would be supported by bolts.

The central pier 31 of the support bracket 30 is in the 3 in cross-section below the bolt tongue 21 shown. Here are the support bracket 30 and thus the central web 31 in the locking direction 80 seen in front of the closing plate 13 , This means in the side view of 3 that the contact point S between the support bracket 30 and the bolt tongue 21 to the left of the closing plate 13 and thus to the left of the contact point R between the bolt tongue 21 and the closing plate 13 lies.

Due to the arrangement of the support bracket 30 in relation to the bolt 20 can the bolt tongue 21 between the side bars 32 . 33 of the support bracket 30 move back and forth. The support bracket 30 is in the locked position, for example, at a small distance below the bolt tongue 21 , so the bolt tongue 21 this movement without friction to the support bracket 30 can perform. If already in the locking position contact between the support bracket 30 and the bolt tongue 21 takes place, the bottom of the bolt tongue can 21 be made beveled, as is the embodiment of the 3 provides. So this contact takes place only when the bolt tongue 21 for the locking in its end position below the closing plate 13 has arrived.

Will the armrest 12 in the direction of traction 50 lifted, the small distance between the support bracket 30 and the bottom of the bolt tongue 21 optionally initially reduced, which, for example, due to a game within the pivot 23 . 23 ' or by component deformation. When the support bracket 30 the bolt tongue 21 contacted from below, a force acts 60 from the closing plate 13 from the top of the bolt tongue 21 , This, however, acts as a supportive force 40 of the support bracket opposite.

5 shows in an enlarged view again the forces acting on improper handling of the armrest according to the invention on the various components, ie when the armrest 12 with a tensile force 50 is pulled up while the bolt tongue 21 below the closing plate 13 in the locked position. Furthermore, in 5 the locking direction is also indicated by an arrow 80. The central pier 31 of the support bracket engages directly below the contact point R between the bolt tongue 21 and the closing plate, ie the relevant contact point S lies directly below the contact point R , The horizontal distance between these two contact points is thus equal to zero, so that the force 60 and the opposite supportive force 40 the same lever arm with respect to the swivel joint 23 . 23 ' to have. The two forces 40 . 60 in the hinge 23 . 23 ' generated bearing forces thus cancel each other.

6 shows an alternative embodiment in which the central web 31 of the support bracket not directly below the contact point R attacks, but the relevant point of contact S lies at a horizontal distance X to the contact point R , The contact point S lies in the locking direction 80 seen before the contact point R , However, the distance X is relatively small. In particular, it is significantly smaller than the vertical distance Y between the hinge 23 , 23 'and the contact point R , This creates a bearing force 70 " in the hinge 23 . 23 ' , However, since Y is much larger than X (ie Y >> X), this bearing force 70 "is far less than the original tensile force 50 on the armrest and the support force 40 of the support bracket. This is how the swivel joint works 23 . 23 ' only a fraction of the original force 50 exposed, especially when X goes to zero.

7 shows again the force curve at an armrest 10 ' according to the prior art. It will be on the armrest 12 applied tensile force 50 by the bolt on the closing plate of the locking mechanism or the housing body 11 directed. This becomes a reaction force 60 on the bolt tongue 21 generated.

The 8th shows, however, the advantageous force curve in an armrest 10 according to the invention with a support bracket 30 , This directs the power 50 through the support bar on the bottom of the bolt tongue 21 where she is the force 60 counteracts.

Overall, it is so through the additional support bracket 30 on the armrest 12 achieves a reduction of forces on the components of the locking mechanism, which leads to a reduction of the risk of damage to these components in case of improper handling of the armrest. However, the support bracket does not have to be formed as shown in the figures, but it can also have other shapes and attack at other locations on the bolt. For example, below or above the bolt tongue 21 a projection on the latch 20 be provided, like the bolt tongue 21 in the direction of the closing plate 13 shows, but not the lock is used. At this projection, a support bracket could also attack to deploy a support force toward the armrest on the bolt. This would also relieve the bolt tongue.

Furthermore, a support bracket would not have a U-shape, but other forms would be considered within the meaning of the invention as a support bracket. For example, one or more of the side engaging under the bolt tongue components could be provided on the armrest.

In addition, the hinge is located 23 . 23 ' in the embodiments of the 5 and 6 almost directly above the contact point R , However, it may also have a different position, ie in the locking direction in front of or behind the contact point R lie.

Although the invention is described with reference to an armrest, it is within the meaning of the invention that lids which can close other storage rooms or other spaces can also be provided with a mechanism according to the invention. In this respect, the inventive concept includes any mechanically influenced lid.

LIST OF REFERENCE NUMBERS

10.10 '

armrest

11

housing body

12

armrest

13

closing plate

14

Joint of the armrest

15

Front area of the armrest

16

Pick-up area on the housing body

20

bars

21

bolt tongue

22

operating handle

23

Swivel, bolt

23 '

Swivel, recording

24

feather

25

coverage

30

support bracket

31

center web

32.33

side web

40

supporting force

50

Traction on armrest

60

Force on bolt tongue

70,70 ', 70 "

Force on bolt swivel

80

locking direction

S

Contact point between support bracket and bolt tongue

R

Contact point between bolt tongue and closing plate

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 7100242 B2 [0003]
• DE 20207285 U1 [0004]
• US 2003/0234554 A1 [0004]

Claims (10)

Armrest (10) for a motor vehicle, wherein the armrest (10) has a housing body (11) and an armrest (12) pivotably mounted on the housing body (11), and a latch (20) rotatably mounted on said arm support (12) a locking tongue (21) is provided, which cooperates in a locking position with a closing plate (13) on the housing body (11), whereby a pivoting of the arm support (12) away from the housing body (11) is blocked, characterized in that at the Arm support (12) at least one support bracket (30) is mounted, which upon application of a force for pivoting the armrest (12) away from the housing body (11) in the locking position of the bolt (20) contact with the latch (20) and so on a support force (40) in the direction of the arm support (12) on the latch (20) applies. Armrest after Claim 1 characterized in that said at least one support bracket (30), upon application of a force for pivoting the arm support (12) away from the housing body (11) in the locking position of the latch (20), contacts the latch tongue (21) on the side; which is remote from the armrest (12). Armrest after Claim 1 or 2 , characterized in that the support bracket (30) is U-shaped and in the locking position of the bolt (21) engages around at least the bolt tongue (21). Armrest according to one of the preceding claims, characterized by a central web (31) of the support bracket (30), which in the locking position of the bolt (20) at a distance below the bolt tongue (21). Armrest according to one of the preceding claims, characterized in that a horizontal distance X between the point of contact S from the support bracket (30) to the bolt tongue (21) and the contact point R from the bolt tongue (21) to the closing plate (13) is zero , Armrest after one of the previous ones Claims 1 to 4 , characterized in that a horizontal distance X between the contact point S from the support bracket (30) to the bolt tongue (21) and the contact point R from the bolt tongue (21) to the closing plate (13) is greater than zero. Armrest after Claim 6 characterized in that the point of contact S from the support bracket (30) to the bolt tongue (21) in the locking direction of the bolt (20) seen in front of the contact point R of the bolt tongue (21) to the closing plate (13). Armrest after one of the previous ones Claims 6 or 7 , characterized in that the distance X is substantially smaller than a vertical distance Y between the pivot (23, 23 ') and the contact point R. Armrest according to one of the preceding claims, characterized in that on the outside of the housing body (12) an inwardly directed receiving area (16) is formed, in which the support bracket (30) is received when the arm support (12) in the closed Position on the housing body (11) is located. Armrest according to one of the preceding claims, characterized in that the bolt (20) below the locking tongue (21) has a covering region (25) which covers the support bracket (30) at least in regions.

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