Fastening hook for a net partition in a motor vehicle

The fastening hook with undercuts at both ends of its hook element provides a secure and cost-effective solution to prevent disengagement during abrupt braking, enhancing the safety of motor vehicle net partitions.

WO2026062251A1PCT designated stage Publication Date: 2026-03-26VOLKSWAGEN AG
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Filing Date
2025-09-22
Publication Date
2026-03-26

AI Technical Summary

Technical Problem

Existing fastening hooks for motor vehicle net partitions are not cost-effective and secure enough to prevent unintentional disengagement during abrupt braking.

Method used

A fastening hook design featuring a base body with a hook element that includes a second opening with undercuts at both ends to prevent disengagement, utilizing a single-piece steel construction with specific undercut angles to ensure secure attachment to vehicle fastening elements.

Benefits of technology

The design effectively prevents unintentional disengagement during abrupt braking, ensuring a secure and cost-effective connection between the net partition and vehicle fastening elements.

✦ Generated by Eureka AI based on patent content.

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Abstract

A fastening hook (10, 100) for a net partition in a motor vehicle, comprising a main body (11); a first opening (12), which is arranged in the main body (11) and is designed to be connected to a fastening tab (104) of the net partition; a hook element (13), which is arranged in the main body (11) and is designed to be hung on a fastening element (102, 152) of the motor vehicle; wherein the hook element (13) comprises a second opening (14) which completely penetrates the main body (11); wherein the second opening (14) has, on a circumference (17) of the second opening, a free region (15) for hanging of the hook element (13), wherein the free region (15) completely penetrates the main body (11) in a radial direction (16) with respect to the second opening (14); wherein the second opening (14) has a first undercut (20) at a first end (18) of the free region (15) and a second undercut (21) at a second end (19) of the free region (15), such that the hook element (13) is prevented from being unhooked after the hook element (13) has been hung on the fastening element (102, 152).
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Description

[0001] K 34250 Wo

[0002] Description

[0003] Fastening hooks for a net partition in a motor vehicle

[0004] The present invention relates to a fastening hook for a net partition in a motor vehicle, a net partition for a motor vehicle and a motor vehicle.

[0005] Fastening hooks for cargo net partitions in motor vehicles are generally known. The cargo net partitions are attached in the rear seating area to the folded-down rear seats, to eyelets on the B-pillar, and to the ceiling or side panels. The cargo net partitions serve to secure the load and prevent it from being thrown forward into the driver and front passenger area during abrupt braking, and prevent unsecured luggage from sliding during acceleration. Fastening hooks are used in the lower part of the cargo net partition to attach it. These hooks are engaged in corresponding recesses with mounting brackets and / or eyelets. For example, DE102020133064A1 discloses a method for attaching a cable pull element to a force transmission element for an actuating mechanism of a movable vehicle component.From DE102005001400A1 a reference fastening arrangement for a seat, in particular a motor vehicle seat, is known, US2012 / 0228896A1 discloses a sunshade hook assembly or a sunshade hook which is connected to rear window sunshade devices in a vehicle.

[0006] In this context, it has now become apparent that there is a need to provide cost-effective and at the same time safe fastening hooks.

[0007] It is therefore an object of the present invention to provide a fastening hook for a net partition in a motor vehicle. In particular, it is an object of the present invention to provide a cost-effective and secure fastening hook for a net partition in a motor vehicle.

[0008] The aforementioned problem is solved by the claims. In particular, the problem is solved by a fastening hook for a net partition in a motor vehicle with the features of independent claim 1. Further advantages and details of the invention will become apparent from the dependent claims, the description, and the drawings. Features described in connection with the fastening hook according to the invention naturally also apply in connection with the invention according to K 34250 Wo

[0009] net partition, the system according to the invention and vice versa, so that with regard to the disclosure of the individual aspects of the invention, mutual reference is always made or can be made.

[0010] According to a first aspect of the present invention, a fastening hook for a net partition in a motor vehicle is provided, comprising: a base body; a first opening arranged in the base body and configured to be connected to a fastening tab of the net partition; a hook element arranged in the base body and configured to be hooked onto a fastening element of the motor vehicle; wherein the hook element comprises a second opening that completely penetrates the base body; wherein the second opening has a free area on a circumference of the second opening for hooking the hook element, the free area completely penetrating the base body in a direction radial to the second opening;wherein the second opening has a first undercut at a first end of the free area and a second undercut at a second end of the free area, such that the hook element is prevented from disengaging after the hook element has been hooked onto the fastening element.

[0011] The term "fastening hook" is to be understood broadly in this context and refers to a structural component designed to connect a net partition to a motor vehicle, in particular to the lower fastening elements located on the rear of the rear seats. The fastening hook can be a single piece or multiple pieces. It can be made of any material. Preferably, the fastening hook is made of steel and is a single piece.

[0012] The term "net partition" is to be understood broadly in this context and refers to a mesh fabric designed for use in a motor vehicle for load securing. Specifically, the net partition can be designed to be hooked onto the back of the folded-down rear seats, for example, using two fastening elements. It can also be designed to be suspended from the ceiling and / or side of the vehicle using two fastening elements. For attachment to the rear seats, the net partition can have fastening tabs in its lower section. In this context, a fastening tab refers to a strap that can be threaded into a first opening of the fastening hook for connection. The net partition can have a seam in the area between the fastening tab and the net, designed to tear open, at least partially, when a certain force is exceeded, causing the seam to elongate.The tearing action dissipates energy generated during abrupt braking and when objects are thrown against the K 34250 Wo mesh partition. For mounting the mesh partition on the side and / or ceiling, it may have openings into which corresponding hooks are inserted.

[0013] The term "base body" is to be understood broadly here and refers to a structural body that forms the basis of the fastening hook. This base body is modified with specifications, such as openings, which are described in more detail below.

[0014] The term "opening" is to be understood broadly in this context and refers in particular to free spaces within the basic body that completely penetrate it in one direction.

[0015] The term "hook element" is to be understood broadly here and refers to a structural element that has at least one undercut which, in conjunction with a corresponding fastening element, prevents movement of the hook element in at least one direction when hooked in. The hook element preferably has a hook underside shaped such that, when hooked in, it engages the fastening element in a locking position, thus preventing disengagement. In other words, the underside of the hook element may have a bulge or material accumulation extending radially outward from the second opening, which causes the hook element to move to a stop after being hooked into or inserted into a recess and a corresponding fastening element. This can advantageously also prevent unintentional disengagement.

[0016] The term "fastening element" in a motor vehicle is to be understood broadly in this context and may include a ring, an eyelet, or a bracket. The fastening element is preferably located in the rear of a rear seat of a motor vehicle or on a floor area of ​​a motor vehicle. The fastening element is preferably a U-shaped bracket that is positioned in a recess in the rear of the rear seat of the motor vehicle.

[0017] The U-shaped bracket preferably has a geometry that corresponds to an outer geometry or outer contour of the hook element, so that in a connected state in an end position, movement along a direction that is essentially perpendicular to a surface of the recess is prevented or blocked.

[0018] The recess in the rear seat or in a floor area preferably has a geometry that corresponds to an outer geometry or outer contour of the hook element K 34250 Wo, such that, in a connected state in an end position, movement along a direction that is essentially perpendicular to a surface of the recess is prevented or blocked. In other words, when installed, the hook element cannot be moved out of the fastening element by a translational movement. A rotary-pivoting movement is required for this.

[0019] In this context, the term "free area" refers to an open section that is moved over the U-shaped bracket of the fastener to engage the hook element. In other words, the free area corresponds to an opening for inserting the fastener. Put another way, the free area corresponds to a continuous slot that opens the second opening in a radial direction.

[0020] In this case, the first end of the free area refers to the end that, when hooked up, faces away from the fastening element.

[0021] The second end of the free area refers to the end that, when hooked in, faces the fastening element.

[0022] In this context, the term undercut refers to a recess that is located laterally offset within the second opening at the first or second end of the free area and can hinder or restrict relative movement between the fastening hook and the fastening element.

[0023] The fastening hook according to the invention is based on the understanding that, when engaged, it must prevent unintentional disengagement. The second undercut is required for attaching the mesh partition. It ensures a connection between the mesh partition and the fastening tab. In the event of abrupt braking, for example in a rear-end collision, the first undercut prevents the fastening element, such as the bracket, from simply slipping out of the second opening. In a rear-end collision, the seam in the mesh partition tears, resulting in an intended elongation in this area. As a result of this elongation and / or the rebound of the mesh partition, the fastening hook can move unintentionally around the bracket. In the worst case, this can cause the bracket to be moved relatively far out of the free area of ​​the second opening.The fastening hook detaches from the connection. The first undercut solves this problem by capturing the bracket in this kinematic application and preventing it from moving out of the second opening. It should be noted here that "relative movement out" is intended to indicate that the bracket of the fastening element is considered fixed and the fastening hook is considered movable. This arrangement of a first undercut and a second undercut advantageously allows the safety and functionality of the fastening hook to be efficiently increased with a simple geometry.

[0024] According to an optional embodiment of the fastening hook, the first undercut has an undercut angle in the range of 45° to 90°.

[0025] The term undercut angle, in this context, refers to an angle measured from a plane running parallel through the first or second end of the free area. An undercut angle of 0°, for example, would mean no undercut. An undercut angle of 90° would indicate a right-angled indentation behind the free end. An undercut angle greater than 90° would mean the undercut would have an indentation extending towards the free area.

[0026] In this way, it is advantageous to prevent the connection between the fastening hook and the fastening element from coming loose during abrupt braking.

[0027] According to another possible embodiment of the fastening hook, the first undercut has an undercut angle in the range of 60° to 90°, preferably from 80° to 90°.

[0028] In this way, it is advantageous to prevent the connection between the fastening hook and the fastening element from coming loose during abrupt braking.

[0029] Furthermore, according to one embodiment of the fastening hook, the second undercut can have an undercut angle in the range of 90° to 125°.

[0030] In this way, loosening of the connection in the engaged state can be advantageously prevented. Furthermore, loosening of the connection during abrupt braking is prevented, since the fastening element, for example, the bracket, advantageously moves from the second undercut to the first undercut on a side opposite the free area and is held there.

[0031] Furthermore, according to one embodiment of the fastening hook, the second undercut can have an undercut angle in the range of 100° to 125°, preferably 115° to 125°. K 34250 Wo

[0032] The steep undercut angle creates a recess oriented towards the free area. Such a pronounced undercut guides the fastener away from the free area during abrupt braking, to the opposite side, and from there into the first undercut. This second undercut thus prevents the fastener from slipping out of the free area and facilitates its movement into the first undercut. This ensures a secure connection between the fastener and the mounting hook in the event of sudden braking.

[0033] According to one possible embodiment, the fastening hook is a single piece.

[0034] In other words, no multi-part assembly is required here. "One-piece" in this context refers to a single, integral, or monolithic design.

[0035] In this way, a fastening hook can be provided in an advantageously cost-effective and reliable manner, preventing unintentional unhooking during abrupt braking.

[0036] According to an optional embodiment of the fastening hook, a transition of the fastening hook between the first end and the first undercut has an arc-shaped contour in a top view of the fastening hook and / or the first undercut has an arc-shaped contour in a top view of the fastening hook and / or the second undercut has an arc-shaped contour in a top view of the fastening hook.

[0037] The arc-shaped contour allows for smooth movement when hooking and, during abrupt braking, provides better guidance from the second undercut to the first undercut. This results in improved guiding properties, especially with a cylindrically shaped fastener, such as a cylindrical bracket.

[0038] Furthermore, according to one embodiment of the fastening hook, the second opening between the first undercut and the second undercut can have a kinked contour on a side opposite the free area in a top view of the fastening hook, wherein the kinked contour has a kink angle between a part facing the first undercut and a part facing the second undercut in the range of 10° to 30°, preferably 20° to 30°. K 34250 Wo

[0039] Compared to a straight contour between the first and second undercuts, this design offers advantageously better guiding properties in the event of abrupt braking. This has a positive effect on safety.

[0040] According to a second aspect of the invention, a net partition wall is provided with at least one fastening hook as described above.

[0041] According to a third aspect of the invention, a system is provided comprising a motor vehicle with a fastening hook and / or a net partition described above.

[0042] Advantages described in detail with respect to the fastening hook according to the first aspect of the invention apply equally to the net partition according to the second aspect of the invention and the system according to the third aspect of the invention, and vice versa.

[0043] Further advantages, features, and details of the invention will become apparent from the following description, in which exemplary embodiments of the invention are described in detail with reference to the drawings. The features mentioned in the claims and in the description can be essential to the invention individually or in any combination. A fastening hook according to the invention and an installation situation are explained in more detail below. The following are shown schematically:

[0044] Figure 1 shows a top view of a fastening hook,

[0045] Figure 2 shows an installation situation for a fastening hook, and

[0046] Figure 3 shows a side view of an installation situation for a fastening hook.

[0047] Fig. 1 shows a fastening hook 10. The fastening hook 10 is a single piece made of steel. It serves to fasten the lower side of a mesh partition (not shown) in a motor vehicle (not shown). The fastening hook 10 comprises a base body 11. A first opening 12 is arranged in the upper region of the base body 11. The first opening 12 completely penetrates the base body 11. The first opening 12 is designed to thread a fastening tab 104 (not shown) of a mesh partition (not shown) through it. A hook element 13 is arranged in the lower region of the base body 11. The hook element K 34250 Wo

[0048] The 13 is designed to be hooked into a fastening element 102 (not shown) of a motor vehicle (not shown). The base body 11 has a second opening 14. The second opening 14 penetrates the base body 11 completely in one direction. The second opening 14 has a free area 15 on one circumference 17 of the second opening 14. The free area 15 penetrates the base body 11 completely outwards in a radial direction 16. The free area 15 serves to hook or guide the fastening hook 10 around the fastening element 102 (not shown). The free area 15 has a first end 18 and a second end 19. A first undercut 20 is arranged above the first end 18. This first undercut 20 prevents unintentional disengagement in the event of abrupt braking. A second undercut 21 is arranged below the second end 19.The second undercut 21 allows the fastening hook 10 to be engaged in the fastening element 102. The first undercut 20 has an undercut angle 22 of 90°. The second undercut 21 has an undercut angle 23 of approximately 130°. The transition 24 between the first end 18 and the first undercut 20 is arcuate. The transition 25 between the second end 19 and the second undercut 21 is arcuate. Between the first undercut 20 and the second undercut 21, the circumference 17 of the second opening 14 has a kinked contour 26 with a kink angle 27 of approximately 35°. Alternatively, a straight contour could also be present here.

[0049] Fig. 2 shows an installation situation for a fastening hook 100. The fastening hook 100 is hooked into a fastening element 102. In this case, the fastening element 102 is a U-shaped bracket. The fastening element 102 is arranged in a recess 103 on the rear of a rear seat 101 in a motor vehicle. For the installation of the cargo net partition, the rear seat or bench is folded down. It typically contains two fastening elements 102 into which the corresponding fastening hooks 100 are hooked. The geometry of the recess 103 is adapted to the outer contour of the hook element 13, so that the fastening hook 100 can only be hooked in and out by a twisting motion. In its upper region, the fastening hook 100 is connected to the fastening tab 104 of the cargo net partition (not shown).

[0050] Fig. 3 shows a side view of an installation situation for a fastening hook 150. The fastening hook 150 is hooked onto the fastening element 152. The fastening element 152 is located on the rear side 151 of a rear seat. Furthermore, a fastening tab 153 is threaded into the fastening hook 150. It is also clearly visible that the fastening hook 150 is only secured by a K 34250 Wo

[0051] The swivel movement can be removed from the fastening element 152. Alternatively, the fastening element 151 can also be arranged on a side wall of the motor vehicle.

[0052] K 34250 Wo

[0053] Reference symbol list

[0054] 10, 100, 150 fastening hooks

[0055] 11 Basic shapes

[0056] 12 first opening

[0057] 13 hook element

[0058] 14 second opening

[0059] 15 free space

[0060] 16 radial direction

[0061] 17 Scope of second opening

[0062] 18 first end free area

[0063] 19 second end free area

[0064] 20 first undercut

[0065] 21 second undercut

[0066] 22 Undercut angles first undercut

[0067] 23 Undercut angle second undercut

[0068] 24 Transition from first end to first undercut

[0069] 25 Transition from second end to second undercut

[0070] 26 Bend contour

[0071] 27 Angle of deflection

[0072] 101, 151 Rear seat

[0073] 102, 152 Fastening element

[0074] 103 Recess on back for fastening element

[0075] 104, 153 Mounting tab

Claims

K 34250 Wo Patent claims 1. Fastening hooks (10, 100, 150) for a net partition in a motor vehicle, comprising a base body (11); a first opening (12) arranged in the base body (11) and configured to be connected to a fastening tab (104) of the net partition; a hook element (13) arranged in the base body (11) and configured to be hooked onto a fastening element (102, 152) of the motor vehicle; wherein the hook element (13) comprises a second opening (14) that completely penetrates the base body (11); wherein the second opening (14) has a free area (15) on a circumference of the second opening (17) for hooking the hook element (13), the free area (15) enclosing the base body (11) in a manner relative to the second opening (14) radial direction (16) completely penetrates; wherein the second opening (14) is at a first end (18) of the free area (15) has a first undercut (20) and a second undercut (21) at a second end (19) of the free area (15) so that the hook element (13) is prevented from unhooking after the hook element (13) has been hooked onto the fastening element (102, 152).

2. Fastening hook (10, 100, 150) according to claim 1, characterized in that the first undercut (20) has an undercut angle (22) in the range of 45° to 90°.

3. Fastening hook (10, 100, 150) according to claim 1 or 2, characterized in that the first undercut (20) has an undercut angle (22) in the range of 60° to 90°, preferably 80° to 90°. K 34250 Wo 4. Fastening hook (10, 100, 150) according to one of the preceding claims, characterized in that the second undercut (21) has an undercut angle (23) in the range of 90° to 125°.

5. Fastening hook (10, 100, 150) according to one of the preceding claims, characterized in that the second undercut (21) has an undercut angle (23) in the range of 100° to 125°, preferably from 115° to 125°.

6. Fastening hook (10, 100, 150) according to one of the preceding claims, characterized in that the fastening hook (10, 100, 150) is one piece.

7. Fastening hook (10, 100, 150) according to one of the preceding claims, characterized in that a transition (24) between the first end (18) and the first undercut (20) has an arc-shaped contour in a top view of the fastening hook (10, 100) and / or a transition (25) between the second end (19) and the second undercut (21) has an arc-shaped contour in a top view of the fastening hook (10, 100) and / or the first undercut (20) has an arc-shaped contour in a top view of the fastening hook (10, 100) and / or the second undercut (21) has an arc-shaped contour in a top view of the fastening hook (10, 100).

8. Fastening hook (10, 100, 150) according to one of the preceding claims, characterized in that the second opening (14) between the first undercut (20) and the second undercut (21) has a kinked contour (26) on a side opposite the free area (15) in a top view of the fastening hook (10, 100), wherein the kinked contour (26) has a kink angle (27) between a part facing the first undercut and a part facing the second undercut in the range of 10° to 30°, preferably from 20° to 30°.

9. Mesh partition wall with at least one fastening hook (10, 100, 150) according to one of claims 1 to 8. K 34250 Wo 10. System comprising a motor vehicle with a fastening hook (10, 100, 150) according to any one of claims 1 to 8 and / or a net partition according to claim 9.

Citation Information

Patent Citations

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