A door hinge reinforcement structure, a door assembly, and a vehicle

By installing reinforcing plates and positioning components in the hinge mounting area of ​​the inner door panel and the inner panel flange, the problem of sagging deformation caused by poor door hinge installation was solved, thereby improving the strength of the hinge installation and increasing installation efficiency.

CN224432296UActive Publication Date: 2026-06-30ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHEJIANG ZEEKR INTELLIGENT TECH CO LTD
Filing Date
2025-06-19
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In the existing technology, poor installation of car door hinges can cause the car door to sag and deform, affecting the smoothness of opening and closing. In addition, the installation process is complicated and the hinge fasteners are prone to stress due to positional errors, which affects the service life.

Method used

Reinforcing plates and positioning components, including protrusions and connectors, are installed in the hinge mounting area of ​​the inner door panel and the inner panel flange. Precise installation is achieved through the cooperation of positioning grooves, which enhances the structural strength of the hinge mounting area, eliminates the need for additional positioning tooling, and improves installation efficiency.

Benefits of technology

It improves the strength and deformation resistance of the hinge installation, enhances the user experience of the car door, avoids stress effects caused by installation position deviations, and improves installation efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224432296U_ABST
    Figure CN224432296U_ABST
Patent Text Reader

Abstract

A door hinge reinforcement structure, a door assembly, and a vehicle are disclosed, relating to the field of vehicle component technology. The door hinge reinforcement structure includes a reinforcing plate and a positioning member. The reinforcing plate is connected to an inner panel and an inner panel flange. The positioning member is connected to the reinforcing plate and includes a protrusion and a connector. One end of the protrusion or the connector near the inner panel flange protrudes from the reinforcing plate and passes through and connects to a first positioning groove on the inner panel flange. This structure not only strengthens the hinge installation and improves the hinge's resistance to deformation but also increases installation efficiency and ensures installation quality.
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Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a door hinge reinforcement structure, a door assembly, and a vehicle. Background Technology

[0002] As one of the most frequently used vehicle parts, the lifespan of the car door directly affects the user experience. The car door is installed on the body sheet metal through hinges to realize the opening and closing of the door. After the door is opened, the hinge will directly bear the entire weight of the door. If the hinge is not installed well, the door is prone to sagging and deformation, affecting the smoothness of the door opening and closing, and in severe cases, it may cause the door to be unable to match the body.

[0003] In existing technologies, a reinforcing plate is usually installed at the hinge mounting point. To ensure that the reinforcing plate matches the hinge position, auxiliary tooling is required for positioning and installation during connection, which is relatively complicated. If there is an installation error between the hinge mounting holes on the door and the body sheet metal and they are not fully aligned, the hinge fasteners will be subjected to certain stress when installed in the mounting holes, which will affect the service life of the fasteners and prevent the hinges and their fasteners from properly supporting the door, thus affecting the user experience of the door. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a door hinge reinforcement structure, a door assembly, and a vehicle, which can improve the installation strength of the hinge to ensure the service life of the door, and can also improve installation efficiency and facilitate positioning and installation.

[0005] This utility model provides a door hinge reinforcement structure, which is installed on the inner panel and inner panel flange of the door in the area for connecting the hinge. It includes a reinforcing plate and a positioning member. The reinforcing plate is connected to the inner panel and the inner panel flange, and the positioning member is connected to the reinforcing plate. The positioning member includes a protrusion and a connecting member. One end of the protrusion or the connecting member near the inner panel flange protrudes from the reinforcing plate and passes through and is connected to a first positioning groove on the inner panel flange.

[0006] In one embodiment, a second positioning groove is provided on the reinforcing plate, and the protrusion cooperates with the second positioning groove. The thickness of the protrusion is configured to be greater than the thickness of the reinforcing plate. When the protrusion is embedded in the second positioning groove, both ends of the protrusion protrude from the reinforcing plate in the thickness direction, and one end of the protrusion passes through the second positioning groove and cooperates with the first positioning groove.

[0007] In one embodiment, when the protrusion is embedded in the first positioning groove, the end of the protrusion near the inner plate flange protrudes out of the first positioning groove and contacts the hinge.

[0008] In one embodiment, the connector protrudes from the end of the protrusion away from the inner plate flange.

[0009] In one embodiment, the protrusion has a fixing hole that passes through the protrusion and the connector, and the hinge fixing member passes through the fixing hole.

[0010] In one embodiment, the connector protrudes from the end of the protrusion near the inner plate flange, and a second positioning groove is provided on the reinforcing plate. The connector cooperates with the second positioning groove. When the connector is embedded in the second positioning groove, the reinforcing plate is at least partially attached to the inner plate and the end of the inner plate flange away from the hinge. The connector extends out of the second positioning groove and connects to the first positioning groove.

[0011] In one embodiment, the connector protrudes from both ends of the protrusion in the thickness direction of the protrusion.

[0012] In one embodiment, the connector has a fixing hole that passes through the protrusion and the connector, and the hinge fixing member passes through the fixing hole.

[0013] This utility model also proposes a car door assembly, including an inner panel and an inner panel flange, wherein the inner panel and the inner panel flange are connected at an included angle, and the inner panel and the inner panel flange are connected in the area where the hinge is installed by the above-mentioned car door hinge reinforcement structure.

[0014] This utility model also proposes a vehicle that includes the above-mentioned door hinge reinforcement structure, or includes the above-mentioned door assembly.

[0015] The beneficial effects of this utility model are as follows:

[0016] The reinforcing plate and positioning component are installed in the area of ​​the door where the hinge is installed, which increases the structural strength of the hinge installation area and thus strengthens the hinge structure. The protrusion or connector can cooperate with the first positioning groove on the inner panel flange, which can play a positioning role when installing the reinforcing plate. This eliminates the need for additional positioning fixtures to adjust the position of the reinforcing plate during installation, allowing the reinforcing plate to be installed in place in one go. This improves installation efficiency, avoids additional stress on the hinge due to deviation in installation position, helps to improve the problem of door sagging, and enhances the hinge's resistance to deformation. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the door and hinge in an embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram of the structure of an embodiment of the present invention, in conjunction with the inner panel and the inner panel flange.

[0021] Figure 4 This is an exploded view of an embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the structure of another embodiment of the present invention, which is in conjunction with the inner panel and the inner panel flange.

[0023] Figure 6 This is an exploded view of another embodiment of the present invention.

[0024] In the picture:

[0025] 10-Car door; 101-Hinge; 102-Body sheet metal; 11-Inner panel; 12-Inner panel flange; 13-First positioning groove; 20-Reinforcing plate; 21-Second positioning groove; 22-Connecting edge; 23-Reinforcing rib; 30-Positioning component; 31-Protrusion; 311-Cut surface; 312-Fixing hole; 32-Connecting component. Detailed Implementation

[0026] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0027] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0028] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0030] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0031] like Figure 1 As shown, the car door 10 of this utility model is installed on the body sheet metal 102 by hinges 101 to enable opening and closing. More specifically, there are two hinges 101, which are distributed along the Z direction (up and down direction) of the vehicle.

[0032] Reference Figure 3 and Figure 5 The door 10 includes an inner panel 11 and an inner panel flange 12. The inner panel flange 12 is connected to the inner panel 11 at a certain angle, and the hinge 101 is installed on the inner panel flange 12 by a fastener. Since the thickness of the inner panel flange 12 is limited, the support force for the fastener is insufficient. Therefore, a reinforcing structure needs to be arranged on the inner side of the inner panel 11 to improve the structural strength of the hinge 101 and its fastener.

[0033] Combination Figure 1 and Figure 2 This utility model proposes a door hinge reinforcement structure, which is installed on the inner panel 11 and inner panel flange 12 of the door 10 in the area for connecting the hinge 101. It includes a reinforcing plate 20 and a positioning member 30. The reinforcing plate 20 is connected to the inner panel 11 and inner panel flange 12, and the positioning member 30 is connected to the reinforcing plate 20. The positioning member 30 includes a protrusion 31 and a connector 32. One end of the protrusion 31 or the connector 32 near the inner panel flange 12 protrudes from the reinforcing plate 20 and passes through and is connected to the first positioning groove 13 on the inner panel flange 12.

[0034] The reinforcing plate 20 and the positioning component 30 are installed in the area of ​​the door 10 where the hinge 101 is installed, which can increase the structural strength of the hinge 101 installation point and thus strengthen the structure of the hinge 101. The protrusion 31 or the connector 32 can cooperate with the first positioning groove 13 on the inner panel flange 12 and play a positioning role when installing the reinforcing plate 20. This eliminates the need for additional positioning fixtures to adjust the position of the reinforcing plate 20 during installation, allowing the reinforcing plate 20 to be installed in place at one time. This improves installation efficiency, avoids additional stress on the hinge 101 due to deviation in installation position, helps to improve the problem of the door 10 being prone to sagging, and enhances the deformation resistance of the hinge 101.

[0035] In one embodiment, combined with Figure 3 and Figure 4 The reinforcing plate 20 has a second positioning groove 21 that extends through the reinforcing plate 20 along its thickness direction. The thickness of the protrusion 31 is configured to be greater than the thickness of the reinforcing plate 20. The protrusion 31 cooperates with the second positioning groove 21. When the protrusion 31 is embedded in the second positioning groove 21, both ends of the protrusion 31 protrude from the reinforcing plate 20 in the thickness direction. The end of the protrusion 31 near the inner plate flange 12 can be fitted into the first positioning groove 13 to achieve connection with the inner plate flange 12. When the reinforcing plate 20 is connected to the inner plate 11, the positions of the second positioning groove 21 and the first positioning groove 13 correspond.

[0036] In this first embodiment, when the protrusion 31 is embedded in the first positioning groove 13, its end near the inner plate flange 12 is flush with the inner plate flange 12 to ensure the installation quality of the hinge 101.

[0037] In another example of this embodiment, when the protrusion 31 is embedded in the first positioning groove 13, one end of it near the inner panel flange 12 protrudes from the first positioning groove 13. When the hinge 101 is installed, the hinge 101 can contact the protrusion 31. The protrusion 31 can increase the structural thickness of the hinge 101 installation location as much as possible in a limited space, thereby ensuring the installation strength of the hinge 101. The protrusion 31 can also act as a gasket to increase the contact area between the fastener of the hinge 101 and the protrusion 31, thereby improving the structural strength of the fastener and preventing the fastener from deforming due to the weight of the door 10, so that the door 10 is less likely to sag after opening.

[0038] In the prior art, a shim is usually added to the fastener of the hinge 101 to improve the installation quality of the fastener, which is a relatively complicated process. By having the protrusion 31 protrude from the first positioning groove 13, there is no need to set a shim, which improves the installation efficiency.

[0039] In this first embodiment, the protrusion 31 and the reinforcing plate 20 are connected by welding (e.g., spot welding). More specifically, the protrusion 31 is first fixed in the second positioning groove 21 by welding, and then the reinforcing plate 20 is positioned by the cooperation between the protrusion 31 and the first positioning groove 13. The protrusion 31 is fixed in the first positioning groove 13 by welding, and then the reinforcing plate 20 is connected to the inner plate 11 and the inner plate flange 12 by welding (e.g., MIG welding) to form a whole.

[0040] In this example of Embodiment 1, as Figure 4 As shown, the cross-section of the protrusion 31 is polygonal, more specifically, the cross-section of the protrusion 31 is a regular polygon. The shapes of the first positioning groove 13 and the second positioning groove 21 match the protrusion 31. With this arrangement, the protrusion 31 can be embedded in the first positioning groove 13 and the second positioning groove 21 at a specific angle, thereby enabling the reinforcing plate 20 to be installed in place with the inner plate 11 and the inner plate flange 12 in one go.

[0041] For example, such as Figure 4 As shown, the protrusion 31 is made of a square plate, and the side of the protrusion 31 is provided with a cut surface 311 so that the cross section of the protrusion 31 is wide on one side and narrow on the other side, so that the protrusion 31 can be embedded in the first positioning groove 13 and the second positioning groove 21 at a specific angle, thereby improving the positioning accuracy and allowing the reinforcing plate 20, inner plate 11 and inner plate flange 12 to be installed in place at one time.

[0042] In this example of Embodiment 1, as Figure 2 As shown, the connector 32 protrudes from the end of the protrusion 31 away from the inner plate flange 12. The connector 32 and the protrusion 31 are integrally formed or formed by welding. The connector 32 and the protrusion 31 cooperate to connect with the fixing part of the hinge 101.

[0043] For example, combined Figure 4 The protrusion 31 has a fixing hole 312, which passes through the protrusion 31 and the connector 32. The fixing hole 312 can cooperate with the fixing part of the hinge 101 so that the fixing part passes through the protrusion 31 and the connector 32. The cooperation between the protrusion 31 and the connector 32 can support the fixing part, thereby increasing the contact area between the fixing part and the positioning part 30, which helps to ensure the structural strength of the fixing part.

[0044] For example, the fastener is a bolt, and the fixing hole 312 is a screw hole.

[0045] In this example of Embodiment 1, the positioning element 30 is made of cast iron to provide good structural strength.

[0046] In another embodiment, such as Figure 6As shown, the connector 32 protrudes from the end of the protrusion 31 near the inner plate flange 12. The reinforcing plate 20 has a second positioning groove 21, which penetrates the reinforcing plate 20 along the thickness direction. The connector 32 cooperates with the second positioning groove 21. When the connector 32 is embedded in the second positioning groove 21, the reinforcing plate 20 and the inner plate 11 and the end of the inner plate flange 12 away from the hinge 101 are at least partially in contact. The connector 32 passes through the second positioning groove 21 and cooperates with the first positioning groove 13.

[0047] In this example of Embodiment 1, combined with Figure 2 and Figure 6 The connector 32 protrudes from both ends of the protrusion 31 in the thickness direction. The connector 32 can be connected to the fixing part of the hinge 101 to increase the contact area with the fixing part.

[0048] In this first embodiment, the protrusion 31 and the connector 32 are integrally formed. During installation, the connector 32 is inserted into the second positioning groove 21 and welded to fix it. Then, the positioning of the reinforcing plate 20 is achieved by the cooperation between the connector 32 and the first positioning groove 13. The connector 32 is fixed in the first positioning groove 13 by welding. Then, the reinforcing plate 20 is welded to the inner plate 11 and the inner plate flange 12 to form a whole.

[0049] In this example of Embodiment 1, combined with Figure 2 and Figure 6 The connector 32 is a columnar component. This design reduces cost and helps to reduce the overall weight of the positioning component 30.

[0050] In this example of Embodiment 1, as Figure 6 As shown, the connector 32 has a fixing hole 312, which passes through the protrusion 31 and the connector 32. The fixing hole 312 can cooperate with the fixing member of the hinge 101 to install and fix the hinge 101 by inserting the fixing member into the fixing hole 312. The protrusion 31 is used to increase the structural strength of the inner plate 11 and the inner plate flange 12. The connector 32 can not only play the role of positioning the reinforcing plate 20, but also cooperate with the fixing member to realize the installation of the hinge 101. The connector 32 can increase the contact area between the fixing member and the fixing member, which is conducive to ensuring the structural strength of the fixing member.

[0051] For example, the thickness of the hole wall of the fixing hole 312 to the outer wall of the connector 32 is 3.5 mm, so as to provide a good connection and increase the strength of the fastener of the hinge 101.

[0052] In one embodiment, such as Figure 2 As shown, the reinforcing plate 20 includes a connecting edge 22, which is used to connect with the inner plate 11 and the inner plate flange 12 by welding.

[0053] For example, such as Figure 3 As shown, the reinforcing plate 20 is provided with reinforcing ribs 23 to increase the structural strength of the reinforcing plate 20.

[0054] Understandably, since the door 10 is connected by two hinges 101 distributed vertically, the aforementioned door hinge reinforcement structure is set to be two, in order to cooperate with the mounting area of ​​the hinge 101.

[0055] This utility model also proposes a car door assembly, including the aforementioned inner panel 11 and inner panel flange 12, the inner panel 11 and inner panel flange 12 are connected at a certain angle, and the inner panel 11 and inner panel flange 12 are connected to the aforementioned car door hinge reinforcement structure in the area where the hinge 101 is installed.

[0056] For example, the inner panel 11 and the inner panel flange 12 are integrally formed.

[0057] For example, the inner plate 11 and the inner plate flange 12 are made of steel plate structure.

[0058] Since the inner panel 11 and inner panel flange 12 of the car door are usually thinner plates, the contact area between the fastener and the plate is small when the hinge 101 is installed by the fastener. Under the influence of the weight of the car door itself, the plate and / or the fastener are easily deformed, causing the car door to sag. By arranging the door hinge reinforcement structure of this utility model in the hinge 101 installation area, the structural strength can be improved and the stiffness requirement of the car door against sag can be met.

[0059] This utility model also proposes a vehicle that includes the aforementioned door hinge reinforcement structure, or includes the aforementioned door assembly.

[0060] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A door hinge reinforcement structure, installed in the area of ​​the inner panel (11) and inner panel flange (12) of the door (10) for connecting the hinge (101), characterized in that, It includes a reinforcing plate (20) and a positioning member (30). The reinforcing plate (20) is connected to the inner plate (11) and the inner plate flange (12). The positioning member (30) is connected to the reinforcing plate (20). The positioning member (30) includes a protrusion (31) and a connector (32). The end of the protrusion (31) or the connector (32) near the inner plate flange (12) protrudes from the reinforcing plate (20) and passes through and is connected to the first positioning groove (13) on the inner plate flange (12).

2. The door hinge reinforcement structure according to claim 1, characterized in that, The reinforcing plate (20) is provided with a second positioning groove (21). The protrusion (31) cooperates with the second positioning groove (21). The thickness of the protrusion (31) is configured to be greater than the thickness of the reinforcing plate (20). When the protrusion (31) is embedded in the second positioning groove (21), both ends of the protrusion (31) protrude from the reinforcing plate (20) in the thickness direction. One end of the protrusion passes through the second positioning groove (21) and cooperates with the first positioning groove (13).

3. The door hinge reinforcement structure according to claim 1 or 2, characterized in that, When the protrusion (31) is embedded in the first positioning groove (13), the end of the protrusion (31) near the inner plate flange (12) protrudes out of the first positioning groove (13) and contacts the hinge (101).

4. The door hinge reinforcement structure according to claim 2, characterized in that, The connector (32) protrudes from the end of the protrusion (31) away from the inner plate flange (12).

5. The door hinge reinforcement structure according to claim 4, characterized in that, The protrusion (31) has a fixing hole (312) that passes through the protrusion (31) and the connector (32), and the fastener of the hinge (101) passes through the fixing hole (312).

6. The door hinge reinforcement structure according to claim 1, characterized in that, The connector (32) protrudes from the end of the protrusion (31) near the inner plate flange (12). The reinforcing plate (20) has a second positioning groove (21). The connector (32) cooperates with the second positioning groove (21). When the connector (32) is embedded in the second positioning groove (21), the reinforcing plate (20) is at least partially attached to the end of the inner plate (11) and the inner plate flange (12) away from the hinge (101). The connector (32) passes through the second positioning groove (21) and connects to the first positioning groove (13).

7. The door hinge reinforcement structure according to claim 6, characterized in that, The connector (32) protrudes from the protrusion (31) at both ends in the thickness direction of the protrusion (31).

8. The door hinge reinforcement structure according to claim 6 or 7, characterized in that, The connector (32) has a fixing hole (312) that passes through the protrusion (31) and the connector (32), and the fastener of the hinge (101) passes through the fixing hole (312).

9. A door assembly, characterized in that, It includes an inner panel (11) and an inner panel flange (12), the inner panel (11) and the inner panel flange (12) are connected at an angle, and the inner panel (11) and the inner panel flange (12) are connected in the area where the hinge (101) is installed with a door hinge reinforcement structure as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the door hinge reinforcement structure as described in any one of claims 1 to 8, or includes the door assembly as described in claim 9.