Tow hook connecting assembly

Abstract

The utility model discloses a tow hook connecting assembly which comprises a mounting back plate, a connecting plate and a connecting sleeve, the mounting back plate is detachably mounted at a set position, the connecting sleeve is arranged on the connecting plate, and the connecting plate is detachably mounted on the mounting back plate; according to the trailer hook connecting assembly disclosed by the utility model, the connecting sleeve is mounted by arranging middle structures such as the mounting back plate and the connecting plate, so that a load generated during trailer is dispersed through the connecting plate and then is transmitted to the mounting back plate for secondary dispersion of the load, the stress on an anti-collision beam is greatly reduced, and the service life of the anti-collision beam is prolonged. The anti-collision beam is effectively prevented from being stressed excessively, deformation or breakage of the anti-collision beam is avoided, and the performance of the anti-collision beam is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive design and manufacturing technology, and relates to a trailer hitch connection assembly. Background Technology

[0002] A tow hook is used to tow vehicles, including RVs, suitcases, etc., and can also be used to prevent rear-end collisions and request assistance when a vehicle is stuck. This function typically involves two parts: the tow hook itself, usually stored in the trunk and temporarily mounted on the tow hook assembly when needed; and the tow hook assembly, which is usually fixed to the vehicle's front and rear bumper beams. According to national standards, a front tow hook is mandatory, while a rear tow hook is optional.

[0003] Currently, trailer hitch assemblies are primarily fixed to the front and rear bumper beams in two ways: First, the sleeve connecting to the trailer hitch is directly welded to the bumper beam, with reinforcements strengthening the area. Second, holes are drilled directly in the bumper beam, and the sleeve connecting the trailer hitch is fixed to a bracket or mounting plate. The sleeve passes through the hole in the bumper beam from back to front, and then the bracket or mounting plate is fixed to the bumper beam. Regardless of the method, when the trailer hitch is subjected to the traction force of the trailer, the load is directly transferred to the bumper beam, which easily causes deformation due to stress concentration.

[0004] To solve the above problems, a trailer hitch connection structure is needed that can effectively reduce the load generated during trailer towing, thereby significantly reducing the stress on the crash beam and preventing deformation or breakage of the crash beam due to excessive stress, which would affect the performance of the crash beam. Utility Model Content

[0005] In view of this, the present invention provides a trailer hook connection assembly, which installs the connecting sleeve by setting intermediate structures such as the mounting back plate and the connecting plate. This allows the load generated during towing to be first dispersed through the connecting plate and then transferred to the mounting back plate for secondary load dispersion. This significantly reduces the stress on the anti-collision beam, effectively preventing excessive stress on the anti-collision beam, avoiding deformation or breakage of the anti-collision beam, and improving the performance of the anti-collision beam.

[0006] This utility model discloses a trailer hitch connection assembly, including a mounting back plate, a connecting plate, and a connecting sleeve. The mounting back plate is detachably installed in a set position, the connecting sleeve is disposed on the connecting plate, and the connecting plate is detachably installed on the mounting back plate.

[0007] Furthermore, the connecting sleeve is angled to the mounting back plate.

[0008] Furthermore, it also includes a first connector and a second connector. The first connector is used to connect the mounting backplate and the connecting plate. The second connector is used to install the mounting backplate to a set position. Multiple first connectors are provided, and multiple first connectors are provided along the circumference of the connecting plate at a position near the periphery of the connecting plate. Multiple second connectors are provided, and multiple second connectors are provided away from the first connectors.

[0009] Furthermore, the periphery of the mounting back plate and the periphery of the connecting plate are attached to each other to form a mounting cavity.

[0010] Furthermore, it also includes a connecting pad, which is sleeved on the first connector and located between the mounting back plate and the connecting plate. The outer wall surface of the mounting back plate and the inner wall surface of the connecting plate are respectively attached to the two ends of the connecting pad along the axial direction.

[0011] Furthermore, the mounting chamber includes a front chamber and / or a rear chamber, with the front chamber disposed on the connecting plate and the rear chamber disposed on the mounting back plate. That is, the mounting chamber can be a single front chamber or a single rear chamber, or it can be a single chamber formed by the merging of the front and rear chambers. The main function of the mounting chamber is to provide space for the installation of the connecting sleeve and the second connecting member.

[0012] Furthermore, the middle part of the connecting plate extends forward to form the front cavity, the rear end of the connecting sleeve is located in the front cavity, and the front end of the connecting sleeve extends forward along its own axis and passes through the connecting plate.

[0013] Furthermore, the middle part of the mounting back plate extends rearward to form the rear cavity, and the rear cavity is provided with a plurality of mounting holes, and a plurality of second connectors are inserted one-to-one through the plurality of mounting holes.

[0014] Furthermore, multiple reinforcing ribs are provided between the outer surface of the rear end of the connecting sleeve and the inner wall surface of the front cavity.

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

[0016] This utility model provides a trailer hitch connection assembly. By incorporating intermediate structures such as a mounting back plate and a connecting plate to install the connecting sleeve, the load generated during towing is first dispersed through the connecting plate and then transferred to the mounting back plate for secondary load dispersion. This significantly reduces the stress on the crash beam, effectively preventing excessive stress, deformation, or breakage, and improving the crash beam's performance. The mounting back plate allows for the installation of the entire trailer hitch connection assembly onto the vehicle's crash beam without the need for holes to insert the connecting sleeve, ensuring the integrity of the crash beam structure. The integrated prefabricated structure also facilitates later maintenance and repair. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of structure one in an embodiment of this utility model;

[0018] Figure 2 This is a front view of structure one in an embodiment of this utility model;

[0019] Figure 3 for Figure 2 Sectional view at point AA;

[0020] Figure 4 This is a rear view of structure one in an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of structure two in an embodiment of this utility model;

[0022] Figure 6 This is a front view of structure two in an embodiment of this utility model;

[0023] Figure 7 for Figure 6 Sectional view at CC;

[0024] Figure 8 This is a side view of structure two in an embodiment of this utility model;

[0025] Figure 9 This is a schematic diagram of structure three in an embodiment of this utility model;

[0026] Figure 10 This is a front view of structure three in an embodiment of this utility model;

[0027] Figure 11 for Figure 10 Sectional view at point BB;

[0028] Figure 12 This is a side view of structure three in an embodiment of this utility model;

[0029] Figure 13 This is a schematic diagram of the arrangement of the reinforcing ribs in an embodiment of this utility model;

[0030] Reference numerals: 1. Mounting back plate; 2. Connecting plate; 3. Connecting sleeve; 4. Connecting pad; 5. Mounting hole; 6. First connector; 7. Second connector; 8. Front cavity; 9. Rear cavity; 10. Reinforcing rib. Detailed Implementation

[0031] It should be noted that in the description of this specification, the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, 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. In this embodiment, "front" and "rear" are relative to a set position. The direction away from the set position is the front, and the direction closer to the set position is the rear. The set position is the anti-collision beam of the vehicle body (either the front or rear anti-collision beam is acceptable). Of course, it can also be other beam structures of the vehicle body, which is understandable to those skilled in the art and will not be elaborated here.

[0032] As shown in the figure, an embodiment of this utility model discloses a trailer hitch connection assembly, including a mounting back plate 1, a connecting plate 2, and a connecting sleeve 3. The mounting back plate 1 is detachably installed in a designated position, and the connecting sleeve 3 is disposed on the connecting plate 2. The connecting plate 2 is detachably installed on the mounting back plate 1. In this embodiment, the connecting sleeve 3 is not conventionally installed directly on the vehicle's anti-collision beam. Instead, it is first redistributed on both sides by the mounting back plate 1 and the connecting plate 2 before being transferred to the anti-collision beam. When towing is carried out, the load generated by the towing vehicle is first transferred to the connecting plate 2 through the connecting sleeve 3. The connecting plate 2 distributes the load for the first time, and then transfers it to the mounting back plate 1. The mounting back plate 1 distributes the load a second time before finally transferring it to the anti-collision beam. This structure can quickly distribute the load, significantly reducing the stress on the anti-collision beam, effectively preventing excessive stress on the anti-collision beam, avoiding deformation or breakage of the anti-collision beam, and effectively ensuring the performance of the anti-collision beam. Meanwhile, the trailer hook connection assembly in this embodiment has an overall assembled structure, making disassembly and assembly more convenient and facilitating later repair, maintenance, and replacement. The connecting sleeve in this embodiment is used to connect the trailer hook. The connecting sleeve has a channel along its central axis for installing the trailer hook. This channel can be threaded or other mounting structures suitable for connecting the trailer hook, which will not be elaborated here.

[0033] In this embodiment, the connecting sleeve 3 is angled to the mounting back plate 1. Angled setting means that the axis of the connecting sleeve 3 is at an angle to the plane where the mounting back plate 1 is located after installation. This setting ensures that a suitable towing angle can be formed regardless of the structure of the crash beam or its location within the crash beam. For example, if only one trailer hitch assembly is provided, it can be positioned in the middle of the crash beam at a 90° angle (i.e., the connecting sleeve 3 is perpendicular to the mounting back plate 1). In this case, the crash beam experiences optimal force during towing, which is understandable to those skilled in the art and will not be elaborated upon here.

[0034] This embodiment also includes a first connector 6 and a second connector 7. The first connector 6 is used to connect the mounting back plate 1 and the connecting plate 2. The second connector 7 is used to install the mounting back plate 1 to a set position. Multiple first connectors 6 are provided, arranged circumferentially around the connecting plate 2 near its periphery. Multiple second connectors 7 are also provided, positioned away from the first connectors 6. In this embodiment, the first connector 6 and the second connector 7 are components for detachable connection. Those skilled in the art can select specific models and types according to actual conditions. In this embodiment, bolts are preferred due to their good tensile strength, low cost, and ease of acquisition. The number of first connectors 6 and second connectors 7 can also be selected according to actual needs; in this embodiment, four are provided for each. The first connector 6 is positioned close to the periphery to avoid the anti-collision beam, making installation more convenient. It also optimizes the force transmission path, allowing for better load distribution and retransmission during load dispersion. The second connector 7 needs to consider both installation and force transmission, so in this embodiment, the second connector 7 is distributed in a dispersed manner. The specific distribution can be adjusted according to the stress conditions. Furthermore, to enable the first connector 6 to connect the connecting plate 2 and the mounting back plate 1, through holes are provided near the periphery of both the connecting plate 2 and the mounting back plate 1. This is understandable to those skilled in the art and will not be elaborated here.

[0035] In this embodiment, based on the aforementioned structure, the trailer hook connection assembly can be configured as at least three structures: Structure 1, Structure 2, and Structure 3. The three structures are further described below with reference to the accompanying drawings.

[0036] In this embodiment, the first structure also includes a connecting pad 4. The connecting pad 4 is sleeved on the first connecting member 6 and located between the mounting back plate 1 and the connecting plate 2. The outer wall surface of the mounting back plate 1 and the inner wall surface of the connecting plate 2 respectively fit into the axial ends of the connecting pad 4. In the first structure, both the connecting plate 2 and the mounting back plate 1 are flat castings. The connecting plate 2 has a through hole, and the connecting sleeve 3 passes through the through hole and is fixedly installed on the connecting plate 2 by welding. At the same time, in order to ensure structural strength, a reinforcing plate is set in the area where the connecting sleeve 3 is set on the front end face of the connecting plate 2. In the first structure, the connecting pad 4 is used to form a cavity between the mounting back plate 1 and the connecting plate 2, providing space for the connecting sleeve 3 and the second connecting member 7. The trailer hook connection assembly using the first structure has high structural strength, can achieve lightweight design, and achieves the effect of light weight, high strength, and sufficient connection force transmission.

[0037] In structures two and three of this embodiment, the only difference is the arrangement of the connecting sleeve 3; the other structures are the same. In both structures two and three, the periphery of the mounting back plate 1 and the periphery of the connecting plate 2 are attached to each other to form a mounting chamber, which is composed of a front chamber 8 and a rear chamber 9. The middle portion of the connecting plate 2 extends forward to form the front chamber 8, the rear end of the connecting sleeve 3 is located within the front chamber 8, and the front end of the connecting sleeve 3 extends forward along its own axis and passes through the connecting plate 2. The middle portion of the mounting back plate 1 extends backward to form the rear chamber 9, which has multiple mounting holes 5. Multiple second connectors 7 are correspondingly inserted into these mounting holes 5 to achieve the installation of the mounting back plate 1 on the anti-collision beam. In this embodiment, although the mounting back plate 1 of structure one is a flat plate structure, the arrangement of the second connectors 7 is the same as in structures two and three: after setting the mounting holes 5, the second connectors 7 are inserted through the mounting holes 5 to achieve the fixed installation of the mounting back plate 1.

[0038] In structure two of this embodiment, the connecting sleeve 3 and the connecting plate 2 are separate structures. The connecting plate 2 has a corresponding through hole, and the connecting sleeve 3 passes through the through hole and is fixedly installed on the connecting plate 2 by welding. In structure three, the connecting sleeve 3 and the connecting plate 2 are integrally cast, and four reinforcing ribs 10 are provided between the outer surface of the rear end of the connecting sleeve 3 and the inner wall of the front cavity 8 to strengthen the structure at the location of the connecting sleeve 3. Both structure two and structure three have the advantages of low processing and assembly costs, no need for molds, simple shape, and high force transmission efficiency.

[0039] All three structures in this embodiment can achieve the purpose of flexible design. For example, when the model is modified, if the shape of the rear bumper changes significantly, the length of the trailer hitch connection assembly can be adjusted without changing the structure of the energy absorption box and the rear anti-collision beam, thereby matching the assembly clearance requirements of the rear bumper.

[0040] It should be noted that, in this embodiment, in order to clearly express structure one, the structure of the first connector 6 and the second connector 7 of structure one is omitted in the drawings, but the mounting hole 5 and the through holes near the periphery of the connecting plate 2 and the mounting back plate 1 are retained to show the setting position of each connector.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A trailer hitch connection assembly, characterized in that: It includes a mounting backplate, a connecting plate, and a connecting sleeve. The mounting backplate is detachably mounted in a set position, the connecting sleeve is disposed on the connecting plate, and the connecting plate is detachably mounted on the mounting backplate.

2. The trailer hitch connection assembly according to claim 1, characterized in that: The connecting sleeve is set at an angle to the mounting back plate.

3. The trailer hitch connection assembly according to claim 2, characterized in that: It also includes a first connector and a second connector. The first connector is used to connect the mounting backplate and the connecting plate. The second connector is used to install the mounting backplate to a set position. Multiple first connectors are provided, and multiple first connectors are provided along the circumference of the connecting plate at a position near the periphery of the connecting plate. Multiple second connectors are provided, and multiple second connectors are provided away from the first connectors.

4. The trailer hitch connection assembly according to claim 3, characterized in that: The periphery of the mounting back plate and the periphery of the connecting plate are attached to each other to form a mounting cavity.

5. The trailer hitch connection assembly according to claim 3, characterized in that: It also includes a connecting pad, which is sleeved on the first connector and located between the mounting back plate and the connecting plate. The outer wall surface of the mounting back plate and the inner wall surface of the connecting plate are respectively attached to the two ends of the connecting pad along the axial direction.

6. The trailer hitch connection assembly according to claim 4, characterized in that: The mounting chamber includes a front chamber and / or a rear chamber, the front chamber being disposed on the connecting plate and the rear chamber being disposed on the mounting back plate.

7. The trailer hitch connection assembly according to claim 6, characterized in that: The middle part of the connecting plate extends forward to form the front cavity, the rear end of the connecting sleeve is located in the front cavity, and the front end of the connecting sleeve extends forward along its own axis and passes through the connecting plate.

8. The trailer hitch connection assembly according to claim 6, characterized in that: The middle part of the mounting back plate extends rearward to form the rear cavity, which is provided with a plurality of mounting holes, and a plurality of second connectors are inserted one-to-one through the plurality of mounting holes.

9. The trailer hitch connection assembly according to claim 7, characterized in that: Multiple reinforcing ribs are provided between the outer surface of the rear end of the connecting sleeve and the inner wall of the front cavity.

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