A fender support and vehicle

Abstract

The application relates to a mudguard support and a vehicle, which comprises a mudguard support rod, a rubber bushing, a base bonding layer, one end of the mudguard support rod is used for connecting a mudguard; the rubber bushing is arranged on the surface of the other end of the mudguard support rod, a base is arranged on the mudguard support rod and is sleeved outside the rubber bushing; and a bonding layer formed by heat curing of an adhesive is arranged between the inner surface of the base and the outer surface of the rubber bushing. The application utilizes the tensioning force of the rubber bushing to realize certain fastening, utilizes the bonding layer to realize bonding and fixing of the rubber bushing and the inner surface of the base, and realizes fastening connection between the base and the mudguard support rod through the bonding force provided by the bonding layer, so that the problem that fatigue stress exists at the welding position and the mudguard is prone to being broken at the welding joint in subsequent use can be solved, the base does not need to be processed to be slotted, a fastening edge and a bolt assembly do not need to be designed, the structure is simpler, and the cost is lower.

Description

Technical Field

[0001] This application relates to the field of automotive parts technology, and in particular to a mudguard bracket and vehicle. Background Technology

[0002] In the field of road transportation, trucks play a vital role. A truck is a vehicle used to carry goods and has a good load-bearing capacity. The overall size of the truck is relatively large, and different models of trucks have different load capacities. As a structural component of a truck, mudguards play an important role. Mudguards are installed and fixed to the transport truck via mudguard brackets, effectively blocking mud and water kicked up by the wheels and preventing them from splashing onto the vehicle body.

[0003] A mudguard bracket mainly consists of a mudguard bracket rod and a base. The base is used to connect to the vehicle frame, and the mudguard bracket rod extends outward from the frame and connects to the mudguard. Existing mudguard brackets are typically made of metal and are generally manufactured in two parts. The mudguard bracket rod is made directly from steel tubing, while the base is manufactured through a casting process. The mudguard bracket rod and base are then connected to form the mudguard bracket. There are various methods for connecting the mudguard bracket rod and base.

[0004] For example, in some related technologies, the mudguard bracket rod and the base are welded together to complete the mudguard bracket manufacturing. This connection method results in a heavy mudguard bracket and high manufacturing costs. Furthermore, because it uses a welded connection, it is a rigid connection. Since trucks travel on complex and bumpy roads, this structural form is prone to fatigue stress at the weld joints. This makes the mudguard susceptible to breakage and damage at the weld joints during subsequent use, requiring replacement and wasting considerable materials.

[0005] For example, in some related technologies, the base is provided with a pipe hole matching the outer diameter of the steel pipe. A groove is machined on the side wall of the pipe hole, and a fastening edge is provided at the end of the groove. A fastening hole is correspondingly provided on the fastening edge. One end of the steel pipe extends into the pipe hole and is tightened and fixed by a bolt assembly provided in the fastening hole. A rubber bushing is provided between the steel pipe and the inner wall of the pipe hole. The rubber bushing can buffer the bumps and vibrations generated during truck operation, so that the bolt assembly can always firmly fix the steel pipe in the pipe hole. This avoids the problems of pin loosening and weld cracking caused by the bumps and vibrations of the truck in the prior art, and improves the service life of the mudguard bracket. The above connection method involves locking the mudguard support with fastening edges and bolt assemblies. The mudguard support is slotted and fastening edges are added. If the mudguard support and fastening edges are separate (i.e., the fastening edges are welded to the mudguard support), breakage and damage may occur at the weld joint. If the mudguard support and fastening edges are integrated (i.e., cast as a single piece), on the one hand, the mudguard support mold needs to be redesigned, resulting in high costs; on the other hand, additional bolt assemblies are required for fixing. In short, the design structure is complex, requiring several sets of mechanical parts to work together, leading to higher costs.

[0006] For example, in some related technologies, the rubber bushing is pre-vulcanized on the steel pipe and then directly pressed into the base; in the above connection method, the rubber bushing is pre-vulcanized on the steel pipe and then directly pressed into the base. The bushing and the steel pipe rely only on the tension force. Under long-term vibration conditions, the friction force is insufficient to support it and it is easy to fall off.

[0007] For example, in some related technologies, rubber is injected into the gap between the mudguard bracket rod and the base, and then vulcanized as a single piece. This connection method requires a dedicated injection mold, which is costly. Furthermore, the injected rubber cannot achieve tension through interference fit; relying solely on vulcanization adhesion, it is prone to detachment under long-term vibration conditions.

[0008] In addition, the existing domestic commercial vehicle mudguard brackets and bases are protected against corrosion using processes such as electrophoresis and spray painting, which require the paint surface to be cured in a high-temperature environment of (140-160℃) × (1-2h).

[0009] Currently, most domestic commercial vehicle mudguard bracket rubber liners are made of natural rubber (NR), which has excellent resilience and compression set recovery properties, making it a reliable liner and suspension material. However, it cannot withstand high temperatures; typically, its performance degradation limit is 140℃ × (1-2 h). In other words, existing rubber liners can withstand a maximum of one high-temperature curing process of electrophoretic paint. Summary of the Invention

[0010] This application provides a mudguard bracket and a vehicle, with a flexible interconnection using rubber bushings, which is low in cost and has good reliability under long-term vibration fatigue conditions.

[0011] In a first aspect, a mudguard bracket is provided, comprising:

[0012] A mudguard bracket rod, one end of which is used to connect to a mudguard;

[0013] A rubber bushing is disposed on the other end surface of the mudguard bracket rod;

[0014] The base is mounted on the mudguard bracket rod and sleeved on the rubber bushing.

[0015] Furthermore, an adhesive layer formed by heat curing an adhesive is provided between the inner surface of the base and the outer surface of the rubber bushing.

[0016] In some embodiments, the cross-sectional profile of the rubber bushing is tapered, and the taper β is 2° to 10°.

[0017] In some embodiments, the outer wall surface of the rubber bushing has a plurality of first grooves for storing adhesive.

[0018] In some embodiments, the first trench is a circumferential trench;

[0019] Alternatively, the first groove may be an axial groove;

[0020] Alternatively, one part of the first groove is a circumferential groove, and the other part of the first groove is an axial groove.

[0021] In some embodiments, the adhesive includes one or more of EP curing adhesive and polyester resin-based adhesive.

[0022] In some embodiments, a second groove is provided on the inner wall of the tail of the base along its circumference;

[0023] The outer wall surface of the tail of the rubber bushing is provided with a boss that matches the second groove, and the boss is engaged in the second groove.

[0024] In some embodiments, a boss is provided on the outer wall surface of the rubber bushing head, which abuts against the inner wall of the base.

[0025] In some embodiments, a sealing mechanism is also provided between the rubber bushing and the base to prevent paint or electrophoretic liquid from entering the adhesive between the rubber bushing and the base.

[0026] In some embodiments, the sealing mechanism includes the boss located on the outer wall surface of the tail and head of the rubber bushing, and a second groove adapted to the boss.

[0027] In a second aspect, a vehicle is provided, which includes a mudguard and a mudguard bracket as described in any of the above, wherein one end of the mudguard bracket rod is connected to the mudguard.

[0028] The beneficial effects of the technical solution provided in this application include:

[0029] The mudguard bracket provided in this application embodiment has a rubber bushing formed by molding and vulcanizing one end of the mudguard bracket rod. An adhesive is then placed between the outer surface of the rubber bushing and the inner surface of the base. The adhesive is used to bond the outer surface of the rubber bushing to the inner surface of the base. After the adhesive is heated and cured, an adhesive layer is formed.

[0030] Compared to the rigid connection method of welding the mudguard bracket rod and the base, the mudguard bracket provided in this application embodiment has a rubber bushing between the base and the mudguard bracket rod, which realizes a flexible connection between the base and the mudguard bracket rod. This can solve the problem that fatigue stress is easy to exist at the weld joint when using the welding method, which makes the mudguard easy to break and be damaged at the weld joint during subsequent use.

[0031] Compared to the locking method using fastening edges and bolt assemblies, which involves machining a groove on the side wall of the pipe hole, setting a fastening edge at the end of the groove, and corresponding fastening holes on the fastening edge, with one end of the steel pipe extending into the pipe hole and being tightened and fixed by bolt assemblies set in the fastening holes, the mudguard bracket provided in this application embodiment has a rubber bushing between the base and the mudguard bracket rod. On the one hand, the tension force of the rubber bushing can achieve a certain fastening effect between the base and the mudguard bracket rod; on the other hand, the rubber bushing is also bonded to the inner surface of the base through an adhesive layer, which can provide sufficient adhesive force to prevent the mudguard bracket rod from easily coming out of the base, thereby achieving a tight connection between the base and the mudguard bracket rod. Therefore, this application does not require machining grooves in the pipe hole of the base, designing fastening edges, or using bolt assemblies for fixing, etc. It can be seen that the structure of this application is relatively simpler and less expensive.

[0032] Compared to methods that involve pre-curing the rubber bushing onto the steel pipe and then directly pressing it into the base, where the bushing and steel pipe rely solely on tension, the mudguard bracket provided in this application embodiment further includes an adhesive layer that bonds the rubber bushing to the inner surface of the base. This adhesive layer provides sufficient bonding force to prevent the mudguard bracket rod from easily detaching from the base, thus achieving a secure connection between the base and the mudguard bracket rod.

[0033] Compared to the method of injecting rubber into the gap between the mudguard bracket rod and the base, followed by integral vulcanization, this application utilizes the tension force of the rubber bushing to achieve a certain fastening effect, while simultaneously using an adhesive layer to bond and fix the rubber bushing to the inner surface of the base. The adhesive force provided by the adhesive layer achieves a secure connection between the base and the mudguard bracket rod. Therefore, this application eliminates the need for a dedicated injection mold, reducing costs, and provides a stronger fixing effect than vulcanization adhesion, solving the problem of easy detachment under long-term vibration conditions when relying solely on vulcanization adhesion.

[0034] Furthermore, the mudguard bracket provided in this application uses a thermosetting adhesive for its bonding layer. This means the adhesive cures upon heating. The reason for this is that the required curing temperature and bonding strength vary depending on the system and formulation. Generally, adhesives that cure at room temperature have a short processing window and are not resistant to high temperatures, easily failing at high temperatures. If a room-temperature adhesive is used in the mudguard bracket, the 140°C baking required for the anti-corrosion paint surface will cause the adhesive to fail. High-temperature curing adhesives, on the other hand, require higher curing temperatures and exhibit more reliable strength and toughness compared to room-temperature adhesives. Therefore, this application uses a thermosetting adhesive, but it is in a viscous state before curing and needs to be cured at high temperatures before entering the electrophoresis or painting process to prevent the viscous adhesive from contaminating the electrophoresis solution or the bonding surface, thus reducing the bonding effect. After electrophoresis or painting, it undergoes another high-temperature curing process.

[0035] Because existing domestic commercial vehicle mudguard brackets and bases employ electrophoresis and spray painting processes for corrosion protection, requiring a high-temperature environment of (140-160℃) × (1-2h) to cure the paint surface, this application selects the heat-curing temperature of the adhesive based on the high-temperature environment of the curing paint surface. For example, when the high-temperature environment of the curing paint surface is (140-160℃) × (1-2h), an adhesive with a heat-curing temperature of approximately 140-160℃ can be selected.

[0036] Two high-temperature curing processes waste energy and may cause the rubber bushing to age and significantly degrade in performance due to the double high temperatures. Therefore, this application provides bosses on the outer wall surfaces of the tail and head of the rubber bushing, and a second groove is formed circumferentially on the inner wall of the tail of the base. The bosses at the tail of the rubber bushing engage with the second groove, and the bosses at the head of the rubber bushing abut against the inner wall of the base. This allows the bosses and the second groove to not only lock the rubber bushing and the base together, but also to seal the adhesive between the rubber bushing and the base, thus preventing paint or electrophoretic liquid from entering. This eliminates the need for additional components.

[0037] Because the adhesive is in a viscous flow state before curing, it may flow after being applied to the surface of the rubber bushing before curing. On the one hand, this flow reduces the amount of adhesive that bonds and cures between the rubber bushing and the base, resulting in insufficient adhesion of the bonded layer and reduced reliability under long-term vibration fatigue conditions. On the other hand, if the adhesive flows onto the mudguard support rod and cures under heat, it may increase the difficulty of assembling the mudguard support rod and the mudguard, and also affect the appearance of the mudguard support rod. Therefore, this application provides several first grooves on the outer wall of the rubber bushing for storing the adhesive. After the adhesive is applied to the surface of the rubber bushing, it can flow into the first grooves to store it. When the rubber bushing is compressed and tightened between the mudguard support rod and the base, the adhesive is squeezed and pushed out through the first grooves, ensuring that all gaps between the rubber bushing and the base are filled completely. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a schematic diagram of the mudguard bracket structure provided in the embodiments of this application;

[0040] Figure 2 A schematic diagram of the mudguard bracket structure provided in the embodiments of this application (the base and the rubber bushing are not fixed);

[0041] Figure 3 A cross-sectional view of the rubber bushing provided in an embodiment of this application;

[0042] Figure 4 This is a schematic diagram of the base structure provided in an embodiment of this application.

[0043] In the diagram: 1. Mudguard support rod; 2. Rubber bushing; 3. Base; 4. Adhesive layer; 5. First groove; 6. Second groove; 7. Boss. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] See Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown in the figure, this application embodiment provides a mudguard bracket, which includes a mudguard bracket rod 1, a rubber bushing 2, a base 3, and an adhesive layer 4. One end of the mudguard bracket rod 1 is used to connect to the mudguard; the rubber bushing 2 is disposed on the other end surface of the mudguard bracket rod 1; the base 3 passes through the mudguard bracket rod 1 and is sleeved on the rubber bushing 2; the base 3 is used to connect to the vehicle frame, and an adhesive layer 4 formed by heat curing an adhesive is provided between the inner surface of the base 3 and the outer surface of the rubber bushing 2.

[0046] The mudguard bracket provided in this application embodiment has a rubber bushing 2 formed by molding and vulcanizing one end of the mudguard bracket rod 1. An adhesive is then placed between the outer surface of the rubber bushing 2 and the inner surface of the base 3. The outer surface of the rubber bushing 2 and the inner surface of the base 3 are bonded together by the adhesive. After the adhesive is heated and cured, an adhesive layer 4 is formed.

[0047] Compared to the rigid connection method of welding the mudguard bracket rod and the base, the mudguard bracket provided in this application embodiment has a rubber bushing 2 between the base 3 and the mudguard bracket rod 1, which realizes a flexible connection between the base 3 and the mudguard bracket rod 1. This can solve the problem that fatigue stress is easy to exist at the weld joint when using the welding method, which makes the mudguard easy to break and be damaged at the weld joint during subsequent use.

[0048] Compared to the locking method using fastening edges and bolt assemblies, which involves machining a groove on the side wall of the pipe hole, setting a fastening edge at the end of the groove, and setting a corresponding fastening hole on the fastening edge, with one end of the steel pipe extending into the pipe hole and being tightened and fixed by bolt assemblies set in the fastening holes, the mudguard bracket provided in this application embodiment has a rubber bushing 2 between the base 3 and the mudguard bracket rod 1. On the one hand, the tension force of the rubber bushing 2 can achieve a certain fastening effect between the base 3 and the mudguard bracket rod 1; on the other hand, the rubber bushing 2 is also bonded and fixed to the inner surface of the base 3 by an adhesive layer 4. The adhesive layer 4 can provide sufficient adhesive force to prevent the mudguard bracket rod 1 from easily coming out of the base 3, thereby achieving a tight connection between the base 3 and the mudguard bracket rod 1. Therefore, this application does not require machining grooves in the pipe hole of the base, nor does it require designing fastening edges, nor does it require using bolt assemblies for fixing, etc. It can be seen that the structure of this application is relatively simpler and less expensive.

[0049] Compared to methods that involve pre-curing the rubber bushing onto the steel pipe and then directly pressing it into the base, where the bushing and steel pipe rely solely on tension, the mudguard bracket provided in this application embodiment further includes a rubber bushing 2 that is bonded to the inner surface of the base 3 via an adhesive layer 4. The adhesive layer 4 provides sufficient adhesive force to prevent the mudguard bracket rod 1 from easily detaching from the base 3, thereby achieving a secure connection between the base 3 and the mudguard bracket rod 1.

[0050] Compared to the method of injecting rubber into the gap between the mudguard bracket rod and the base, followed by integral vulcanization, this application utilizes the tension force of the rubber bushing 2 to achieve a certain fastening effect, while using the adhesive layer 4 to bond and fix the rubber bushing 2 to the inner surface of the base 3. The adhesive force provided by the adhesive layer 4 achieves a tight connection between the base 3 and the mudguard bracket rod 1. Therefore, this application eliminates the need for a dedicated injection mold, reducing costs, and provides a stronger fixing effect than vulcanization adhesion, solving the problem of easy detachment under long-term vibration conditions when relying solely on vulcanization adhesion.

[0051] Furthermore, the mudguard bracket provided in this application uses a thermosetting adhesive for its adhesive layer 4. This means the adhesive cures upon heating. The reason for this is that the required curing temperature and bonding strength vary depending on the system and formulation. Generally, adhesives that cure at room temperature have a short processing window and are not resistant to high temperatures, easily failing at high temperatures. If a room-temperature adhesive is used in the mudguard bracket, the 140°C baking required for the anti-corrosion paint surface will cause the adhesive to fail. High-temperature curing adhesives, on the other hand, require higher curing temperatures and exhibit more reliable strength and toughness compared to room-temperature adhesives. Therefore, this application uses a thermosetting adhesive, but it is in a viscous state before curing and needs to be cured at high temperatures before entering the electrophoresis or painting process to prevent the viscous adhesive from contaminating the electrophoresis solution or the bonding surface, thus reducing the bonding effect. After electrophoresis or painting, it undergoes another high-temperature curing process.

[0052] Because existing domestic commercial vehicle mudguard brackets and bases employ electrophoresis and spray painting processes for corrosion protection, requiring a high-temperature environment of (140-160℃) × (1-2h) to cure the paint surface, this application selects the heat-curing temperature of the adhesive based on the high-temperature environment of the curing paint surface. For example, when the high-temperature environment of the curing paint surface is (140-160℃) × (1-2h), an adhesive with a heat-curing temperature of approximately 140-160℃ can be selected.

[0053] It should be noted that the mudguard support rod 1 of this application can be made of steel pipe. Of course, other existing pipe fittings can also be used as long as they can play the same role.

[0054] It should be noted that, in addition to straight steel pipes, the mudguard support rod 1 of this application can also be made of various curved pipes.

[0055] It should be noted that, in addition to using steel pipes of equal diameter, the mudguard support rod 1 of this application can also be made of various elliptical or irregular cross-sections. At the same time, the cross-sections of the inner cavities of the rubber bushing 2 and the base 3 are also changed to match.

[0056] See Figure 3 As shown, the cross-sectional profile of the rubber bushing 2 is tapered. This tapered shape ensures locking in one direction and also serves a positioning function during assembly, preventing over-pressing. The taper β is 2° to 10°. For example, in a preferred embodiment, the taper β is 3°. It should be noted that the base 3 has the same taper as the rubber bushing 2 to ensure a proper fit between the rubber bushing 2 and the base 3.

[0057] Since the adhesive is in a viscous flow state before curing, it may flow after being applied to the surface of the rubber bushing 2 and before curing. On the one hand, due to the flow of the adhesive, less adhesive is used to bond and cure between the rubber bushing 2 and the base 3, resulting in insufficient adhesion of the bonded layer 4 and reducing reliability under long-term vibration fatigue conditions. On the other hand, the adhesive flows onto the mudguard support rod 1 and cures under heat, which may increase the difficulty of assembling the mudguard support rod 1 with the mudguard and also affect the appearance of the mudguard support rod 1. Therefore, in order to solve this problem, several first grooves 5 for storing adhesive are provided on the outer wall surface of the rubber bushing 2. After the adhesive is applied to the surface of the rubber bushing 2, the adhesive can flow into the first groove 5 to complete the storage of the adhesive. When the rubber bushing 2 is compressed and tightened between the mudguard bracket rod 1 and the base 3, the adhesive is squeezed and pushed out through the first groove 5, ensuring that all gaps between the rubber bushing 2 and the base 3 are filled.

[0058] It should be noted that, since the rubber bushing 2 has a certain elasticity and is compressed and tightened between the mudguard bracket rod 1 and the base 3, the first groove 5 can also prevent the rubber bushing 2 from being over-compressed during the pressing process.

[0059] The extension direction of the first groove 5 can be determined according to actual needs.

[0060] For example, the first groove 5 may extend along the circumference of the rubber bushing 2 on the outer wall surface of the rubber bushing 2, that is, the first groove 5 is a circumferential groove.

[0061] For example, as an example, the first groove 5 can extend along the axial direction of the rubber bushing 2 on the outer wall surface of the rubber bushing 2, that is, the first groove 5 is an axial groove; it should be noted that if the rubber bushing 2 is tapered, then the angle between the extension direction and the axial direction of the rubber bushing 2 is equal to the taper β, such as... Figure 2 and Figure 3 As shown.

[0062] The number of the first grooves 5 can be determined according to actual needs, such as one or more.

[0063] If there are multiple first grooves 5, all of the first grooves 5 can be circumferential grooves. Of course, all of the first grooves 5 can also be axial grooves.

[0064] Alternatively, of all the first grooves 5, a portion of the first grooves 5 are circumferential grooves, and another portion of the first grooves 5 are axial grooves, for example... Figure 2 There is one circumferential groove and four axial grooves.

[0065] The adhesive can be an EP curing adhesive. For example, a single-component high-temperature EP curing adhesive with curing conditions of 150℃×1h, a spraying process atomization pressure of 0.3-0.5MPa, and an adhesive film thickness of 12-25μm.

[0066] The adhesive may also be a polyester resin-based adhesive, with a curing condition of 140-160℃×1h.

[0067] To further ensure a secure connection between the base 3 and the rubber bushing 2, see [link to relevant documentation]. Figure 2 , Figure 3 and Figure 4 As shown, a second groove 6 is provided on the inner wall of the tail of the base 3 along its circumference; a boss 7 adapted to the second groove 6 is provided on the outer wall of the tail of the rubber bushing 2, and the boss 7 is inserted into the second groove 6.

[0068] During assembly, the second groove 6 at the tail of the base 3 can be used to allow the boss 7 on the rubber bushing 2 to retract. After assembly, the boss 7 is engaged in the second groove 6, locking the rubber bushing 2 and preventing it from coming off the boss 7.

[0069] It should be noted that the size of the boss 7 relative to the outer diameter of the rubber bushing 2 can be determined according to actual needs. For example, the height of the boss 7 relative to the outer diameter of the rubber bushing 2 is ≥2mm.

[0070] Further, see Figure 3 As shown, a boss 7 is provided on the outer wall surface of the head of the rubber bushing 2, and the boss 7 abuts against the inner wall of the base 3.

[0071] A boss 7 is provided on the outer wall surface of the head of the rubber bushing 2, which can cooperate with the boss 7 on the outer wall surface of the tail of the rubber bushing 2 to jointly enhance the locking effect on the rubber bushing 2. It should be noted that whether the boss 7 on the outer wall surface of the head of the rubber bushing 2 has a corresponding second groove 6 can be designed according to actual needs.

[0072] Meanwhile, the two bosses 7 can also prevent the adhesive from flowing away from both ends along the axial direction of the rubber bushing 2 when applying the adhesive.

[0073] As described above, since thermosetting adhesives are in a viscous flow state before curing, if thermosetting adhesives are used in mudguard brackets, high-temperature curing is required before electrophoresis to prevent the viscous adhesive from contaminating the electrophoresis solution or the bonding surface, which would reduce the bonding effect. After electrophoresis or painting, another high-temperature curing process is required. This double high-temperature curing wastes energy, and the rubber bushing may age and experience significant performance degradation due to the double high-temperature treatment. Therefore, this application aims to solve the above problems.

[0074] A sealing mechanism is also provided between the rubber bushing 2 and the base 3 to prevent paint or electrophoretic liquid from entering the adhesive between the rubber bushing 2 and the base 3.

[0075] The sealing mechanism seals the adhesive between the rubber bushing 2 and the base 3, thereby preventing paint or electrophoretic liquid from entering.

[0076] Of course, the sealing mechanism can also prevent the adhesive between the rubber bushing 2 and the base 3 from flowing into the electrophoresis solution and contaminating it.

[0077] Specifically, the sealing mechanism includes the boss 7 located on the outer wall of the rubber bushing 2, and a second groove 6 adapted to the boss 7.

[0078] In other words, the sealing mechanism provided in this application can directly utilize the second groove 6 of the boss 7, so that the boss 7 and the second groove 6 not only have a locking function, but also a sealing function, thus eliminating the need for additional components.

[0079] The mudguard bracket provided in this application embodiment can be assembled using the following method:

[0080] 1) A vulcanized rubber bushing 2 is molded onto the cylindrical surface of one end of the mudguard bracket rod 1. In the free state, the outer diameter of the rubber bushing 2 must be ≥2mm relative to the inner diameter of the base 3.

[0081] 2) Clean the inner cavity of the base 3 and the surface of the rubber bushing 2. Specifically, ultrasonically vibrate in gasoline medium for 1 minute, air dry for 1 hour, and brush adhesive on the inner cavity and the surface of the rubber bushing 2. Use single-component high-temperature EP curing adhesive with a film thickness of 12-25μm and an atomization pressure of 0.3-0.5MPa.

[0082] 3) The mudguard bracket rod 1 with rubber bushing 2 is pressed into the inner cavity of the base 3. At this time, the viscosity of the EP curing adhesive can play a lubricating role, reduce the accumulation of rubber, hinder the rebound, and promote the pressing into place. The rubber is compressed and tightened in the inner cavity of the base 3. The exposed surface is cleaned to remove residual adhesive.

[0083] 4) The entire mudguard bracket enters the electrophoresis process, and with the help of high temperature (140~150)℃×(1~2)h coating and drying process conditions, the rubber bushing 2 is cured and bonded to the inner cavity of the base 3.

[0084] The samples of this application and the samples of the direct press-fitting scheme after vulcanization used in related technologies were subjected to adhesive fatigue test and press-release force test.

[0085] Adhesive fatigue test: The assembled mudguard bracket test sample is fixed on the test fixture of the electro-hydraulic servo fatigue testing machine. The testing machine uses a flat indenter, which contacts the upper end of the mudguard bracket steel pipe. The fatigue test condition is set to a downward displacement of 2.5 mm and a frequency of 5 Hz. The fatigue test continues until the rubber bushing of the sample shows obvious tearing or detachment, and the number of fatigue cycles is recorded.

[0086] Compression test: Fix the mudguard bracket test sample on a 200kN universal test plate. The testing machine uses a flat plate indenter. The indenter contacts the upper end of the mudguard bracket steel pipe. Set a downward displacement of 2mm / min to push out the rubber bushing. Record the maximum force value of the sensor, which is the compression test.

[0087] The test results are shown in Table 1 below:

[0088]

[0089] This application also provides a vehicle including a mudguard and a mudguard bracket as mentioned in any of the above embodiments, wherein one end of the mudguard bracket rod 1 of the mudguard bracket is connected to the mudguard.

[0090] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0091] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0092] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A mudguard bracket, characterized in that, It includes: Mudguard bracket rod (1), one end of which is used to connect to the mudguard; A rubber bushing (2) is provided on the other end surface of the mudguard bracket rod (1); The base (3) is mounted on the mudguard bracket rod (1) and sleeved on the rubber bushing (2); In addition, an adhesive layer (4) formed by heat curing an adhesive is provided between the inner surface of the base (3) and the outer surface of the rubber bushing (2). The outer wall surface of the rubber bushing (2) is provided with a plurality of first grooves (5) for storing adhesive. When the adhesive is applied to the surface of the rubber bushing (2), the adhesive flows into the first grooves (5) to complete the storage of the adhesive. When the rubber bushing (2) is compressed and tightened between the mudguard bracket rod (1) and the base (3), the adhesive is squeezed and pushed out through the first grooves (5) to fill all the gaps between the rubber bushing (2) and the base (3). The mudguard bracket rod (1) with the rubber bushing (2) is pressed into the inner cavity of the base (3). At this time, the adhesive is not cured and is in a viscous state. The entire mudguard bracket enters the electrophoresis process. With the help of the high temperature coating and drying process, the rubber bushing (2) is cured at high temperature and bonded to the inner cavity of the base (3). A sealing mechanism is also provided between the rubber bushing (2) and the base (3) to prevent paint or electrophoretic liquid from entering the adhesive between the rubber bushing (2) and the base (3); The sealing mechanism includes: The second groove (6) is opened along its circumference on the inner wall of the tail of the base (3). A boss (7) adapted to the second groove (6) is provided on the outer wall surface of the tail of the rubber bushing (2), and the boss (7) is inserted into the second groove (6); The protrusion (7) is provided on the outer wall surface of the head of the rubber bushing (2), and the protrusion (7) abuts against the inner wall of the base (3).

2. The mudguard bracket as described in claim 1, characterized in that: The cross-sectional profile of the rubber bushing (2) is conical, and the taper β is 2°~10°.

3. The mudguard bracket as described in claim 1, characterized in that: The first trench (5) is a circumferential trench; Alternatively, the first groove (5) may be an axial groove; Alternatively, a portion of the first groove (5) may be a circumferential groove, and another portion of the first groove (5) may be an axial groove.

4. The mudguard bracket as described in claim 1, characterized in that: The adhesive includes one or more of EP curing adhesive and polyester resin-based adhesive.

5. A vehicle, characterized in that: It includes a mudguard and a mudguard bracket as described in any one of claims 1 to 4, wherein one end of the mudguard bracket rod (1) of the mudguard bracket is connected to the mudguard.

Images