DE102019119932A1 - Underrun protection - Google Patents

Abstract

An underride guard (1), in particular for a truck, comprises at least one support (2) which can be mounted on a vehicle frame, on which a swivel arm (3) is rotatably mounted, on the end of which a baffle beam (5) is held, which is between a raised position and a lowered position can be moved, a support arm (7) being provided between the at least one carrier (2) and the swivel arm (3).

Description

The present invention relates to an underride protection, in particular for a truck, with at least one mount which can be mounted on a vehicle frame and on which a swivel arm is rotatably mounted, on the end of which an impact beam is held, which can be moved between a raised position and a lowered position.

The DE 10 2016 014 817 A1 discloses an underride protection device for a commercial vehicle, in which a protective element is arranged displaceably along support elements. In the event of a collision, an airbag is intended to deploy, in order to then slow it down when an impact is detected. Such underride protection is complex to manufacture and prone to errors due to the sensors.

Furthermore, it is known for an underrun protection device to provide support on the vehicle tire, as is shown in DE 10 2017 010 178 A1 is shown. In the case of a rear underrun protection device, however, this must be moved from a lowered position in which the vehicle is used without a trailer to a raised position if a trailer is to be coupled to the vehicle.

It is therefore an object of the present invention to provide an underrun protection device that can absorb high loads in the event of an impact and has a low weight.

This object is achieved with an underride guard with the features of claim 1.

The underride protection according to the invention comprises an impact beam which is held at the end on at least one swivel arm which can be moved between a raised position and a lowered position, a support arm being provided between at least one carrier and the swivel arm. In the event of an impact on the impact beam, force can be transferred via a joint mechanism which includes the swivel arm and the support arm, both of which are preferably held on the at least one carrier. As a result, the impact force is distributed to the swivel arm and the support arm, and the impact beam can absorb high forces with a low weight of the underrun protection.

The support arm is preferably connected to the swivel arm in a central region between the axis of rotation of the swivel arm on the carrier and the impact beam. Based on the length of the swivel arm, the support arm can be connected, for example, in a range between 30% to 70% of the length of the swivel arm in order to ensure good power transmission.

In a preferred embodiment, the support arm can be pivoted in a side view when the pivot arm is rotated in one direction of rotation in an opposite direction of rotation. If the swivel arm is rotated from the lowered position to a raised position and is pivoted counterclockwise, for example, the support arm is rotated in the opposite direction, that is to say clockwise. As a result, the underride protection can be arranged in a particularly compact manner in a raised position.

A curve guide is preferably formed on the support arm. The curve guide can include, for example, an elongated hole in which a guide pin engages, which is fixed on the swivel arm. This allows the guide pin to slide along the curve guide when the swivel arm is pivoted. Alternatively, the curve guide can also be provided on the swivel arm, which is penetrated by a guide pin on the support arm. In addition, it is also possible to establish a rotatable connection between the support arm and the swivel arm, and to provide a curve guide on the connection between the support arm and the carrier.

For a stable design of the support arm, the latter can have two spaced-apart plates which at least partially encompass the swivel arm. The support arm can comprise a spacer, for example a sleeve, in order to keep the two plates at a predetermined distance.

The support arm is preferably rotatably mounted on the at least one carrier. For a stable connection to the carrier, a connecting arm is mounted on the carrier between the axis of rotation of the support arm and the axis of rotation of the swivel arm. The connecting arm forms a frame-like stiffener with the two axes of rotation and the support, which can absorb high forces.

The underride protection according to the invention is preferably mounted on the rear of a vehicle. The underride guard can have two supports, which are designed, for example, as a mounting plate and can be mounted on the vehicle frame. With the underride guard, a test load of at least 180 kN can be intercepted according to the test procedure of the United Nations Economic Commission for Europe (UNECE), 03 series of amendments to UNECE Regulation No. 58 of June 18, 2016.

• 1 eine perspektivische Ansicht eines erfindungsgemäßen Unterfahrschutzes;
• 2 eine Seitenansicht des Unterfahrschutzes der 1 in der nach unten geklappten Position;
• 3 eine Seitenansicht des Unterfahrschutzes der 1 in einer nach oben geklappten Position, und
• 4 eine Rückansicht des Unterfahrschutzes der 1.

The invention is explained in more detail below using an exemplary embodiment with reference to the accompanying drawings. Show it:

• 1 a perspective view of an underrun protection according to the invention;
• 2nd a side view of the underride guard of 1 in the folded down position;
• 3rd a side view of the underride guard of 1 in an upward folded position, and
• 4th a rear view of the underride guard of 1 .

An underrun protection 1 can be mounted on a vehicle, especially on the rear of a truck that can be used with and without a trailer. The underrun protection comprises two beams 2nd , which are designed as mounting plates and can be fixed to a vehicle frame or vehicle frame. On every carrier 2nd is a swivel arm 3rd about an axis of rotation 4th stored. On every swivel arm 3rd is an impact beam at the end 5 Provided, which can be designed as a hollow profile and each form-fitting on one end on the swivel arm 3rd via a holder 6 the baffle beam is fixed 5 embraces. Other fastening mechanisms for the impact beam 5 can be used.

For high forces in the event of an accident and a load on the impact beam 5 To be able to take up is on each swivel arm 3rd a support arm 7 intended. The support arm 7 is about an axis of rotation 8th rotatable on the carrier 2nd held. In addition, the support arm 7 in a central area of the swivel arm 3rd that is between the axis of rotation 4th and the impact beam 5 with the swivel arm 3rd connected. For this is in the support arm 7 a curve 10th trained by a guide pin 11 is reached, in the middle area on the swivel arm 3rd is set.

Every support arm 7 comprises two spaced-apart plates which are spaced in the area of the carrier by a spacer 9 are held spaced apart in the form of a sleeve. The two plates of the support arm 7 grasp the swivel arm on the opposite side 3rd in the area of the guide pin 11 .

Furthermore is on the carrier 2nd a link arm 14 provided the the axis of rotation 8th of the support arm 7 with the axis of rotation 4th of the swivel arm 3rd connects. This results in a frame-like structure on the carrier 2nd with the axes of rotation 4th and 8th and the connecting arm 14 .

In 2nd is the underride guard 1 shown in a lowered position. The swivel arm 3rd is at an angle between 30 ° and 60 ° to the horizontal, for example between 40 ° and 50 °. The swivel arm can be moved from this folded down position 3rd raised, for example to couple a trailer to the vehicle. The raised position is in 3rd shown. The swivel arm is in the lowered position 3rd at a stop 12th on. The raised position can be secured by a mechanism.

When lifting the swivel arm 3rd become the swivel arm 3rd and the support arm 7 moved in opposite directions of rotation, and the guide pin 11 slides along the curve 10th in the support 7 . The swivel arm 3rd is almost horizontal in the folded up position, and the swivel arm 3rd is between the two plates of the support arm 7 compactly arranged.

Will the impact beam 5 impacted by an impact in the lowered position, the impact force is exerted by both the swing arm 3rd as well as from the support arm 7 recorded over the axes of rotation 4th and 8th as well as the guide pin 11 and the carrier 2nd form a stable joint mechanism.

In the illustrated embodiment, there are two carriers 2nd provided with a corresponding joint mechanism, optionally also three or more swivel arms 3rd can be provided.

In the illustrated embodiment, the curve is 10th on the support arm 7 trained to the guide pin 11 on the swivel arm 3rd to slide. It is of course also possible to use a curve on the support arm 7 provide that the axis of rotation 8th in a curve in the support arm 7 engages around the swivel arm 3rd to be able to move between a lowered and a raised position. The movement into the raised position can optionally be done via a spring element 13 , in particular a gas pressure spring, are supported.

It is also possible to take a curve instead of on the support arm 7 also on the swivel arm 3rd to provide the swivel arm 3rd together with the support arm 7 to be able to pivot.

Reference list

1

Underrun protection

2nd

carrier

3rd

Swivel arm

4th

Axis of rotation

5

Baffle

6

holder

7

Support arm

8th

Axis of rotation

9

Spacers

10th

Cornering

11

Guide pin

12th

attack

13

Spring element

14

Connecting arm

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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.

Patent literature cited

• DE 102016014817 A1 [0002]
• DE 102017010178 A1 [0003]

Claims (10)

Underride protection (1), in particular for a truck, with at least one support (2) that can be mounted on a vehicle frame, on which a swivel arm (3) is rotatably mounted, on the end of which a baffle beam (5) is held, which is between a raised position and a lowered position, characterized in that a support arm (7) is provided between the at least one carrier (2) and the swivel arm (3). Underride protection after Claim 1 , characterized in that the support arm (7) is connected to the swivel arm (3) in a central region between the axis of rotation (4) of the swivel arm (3) on the support (2) and the impact beam (5). Underride protection after Claim 1 or 2nd , characterized in that the support arm (7) seen in a side view when the pivot arm (3) is pivoted in one direction of rotation in an opposite direction of rotation. Underride protection according to one of the preceding claims, characterized in that a curve guide (10) is formed on the support arm (7). Underride protection after Claim 4 , characterized in that the curve guide (10) comprises an elongated hole into which a guide pin (11) engages, which is fixed to the swivel arm (3). Underride protection according to one of the preceding claims, characterized in that the support arm (7) has two spaced-apart plates which at least partially encompass the swivel arm (3). Underride protection according to one of the preceding claims, characterized in that the support arm (7) is rotatably mounted on the at least one carrier (2). Underride protection according to one of the preceding claims, characterized in that a connecting arm (14) is mounted on the carrier (2) between the axis of rotation (8) of the support arm (7) and the axis of rotation (4) of the swivel arm (3). Underride protection according to one of the preceding claims, characterized in that the at least one carrier (2) is designed as a mounting plate. Vehicle with an underride guard (1) according to one of the preceding claims, which is arranged at the rear.

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