A commercial vehicle front underguard assembly

Abstract

The application relates to a front lower protection assembly of a commercial vehicle and belongs to the technical field of front lower protection of commercial vehicles. The front lower protection assembly comprises a front lower protection cross beam, a folding front step, the folding front step is arranged below the top surface of the front lower protection cross beam, the folding front step is rotationally connected to the front lower protection cross beam in the horizontal direction, and the folding front step is used for unfolding or folding the folding front step; when the folding front step is in the unfolded state, the folding front step protrudes from the side wall of the front lower protection cross beam. When in the unfolded state, the folding front step protrudes from the side wall of the front lower protection cross beam, which is convenient for an operator to step on, can provide a stepping platform with appropriate and stable height for the operator, and is convenient for the operator to stand on the stepping platform to clean the front part of the commercial vehicle; and the folding front step is rotationally connected to the front lower protection cross beam in the horizontal direction, so that the Z-direction space of the commercial vehicle is not occupied, and inconvenience is avoided.

Description

Technical Field

[0001] This application relates to the field of front underrun protection technology for commercial vehicles, and particularly to a front underrun protection assembly for commercial vehicles. Background Technology

[0002] According to relevant regulations, commercial vehicles must be equipped with a front underrun protection device to protect smaller vehicles from underrunning during a collision. In practice, people often step on the front underrun protection to clean the windshield of the commercial vehicle. However, the current design of the front underrun protection beam is too high, making it inconvenient to step on and causing discomfort.

[0003] Currently, the main solution to improve the ease of getting in and out of the car with the bumper step is to add a flip-up curved tube bracket to the bumper. However, this would occupy the Z-axis space in front of the car, making it inconvenient for the arrangement of front car components and thus impractical. Summary of the Invention

[0004] This application provides a front underrun protection assembly for commercial vehicles to solve the problem in related technologies where the front underrun protection crossbeam of commercial vehicles is too high, making it inconvenient to step on and causing inconvenience for cleaning the front of the vehicle.

[0005] This application provides a front underrun protection assembly for commercial vehicles, including:

[0006] Front lower protective crossbeam;

[0007] A folding front step is provided below the top surface of the lower front protective beam and is rotatably connected to the lower front protective beam in the horizontal direction. The folding front step is used to unfold or fold the folding front step. When the folding front step is in the unfolded state, the folding front step protrudes from the side wall of the lower front protective beam.

[0008] In some embodiments, the lower front protective beam has a accommodating space along its length for accommodating the foldable front step.

[0009] In some embodiments, the folding front step includes a step plate and side plate assemblies rotatably connected to both sides of the step plate, wherein when the step plate is folded, the two side plate assemblies rotate in the same direction.

[0010] In some embodiments, the two ends of the side plate assembly are respectively hinged to the step plate and the front lower protective beam, and the side plate assembly includes a first side plate disposed on the top of the step plate and a second side plate disposed on the bottom of the step plate.

[0011] In some embodiments, one end of one of the side plate assemblies, away from the step plate, is provided with a torsion spring or an electric strut.

[0012] In some embodiments, the bottom of the step plate is provided with a limiting member for limiting and fixing the step plate.

[0013] In some embodiments, the limiting member is a spring locking pin, which includes a spring sheet fixed to the front lower protective crossbeam and a spring top pin snapped onto one end of the spring sheet. A limiting hole 23 for matching the spring top pin is provided on the side plate assembly.

[0014] In some embodiments, side step assemblies are provided at both ends of the front lower protective crossbeam.

[0015] In some embodiments, the side step assembly includes a first step bracket and a second step bracket spaced apart along the height direction. The first step bracket is fixed to the top surface of the end of the front lower protective beam, and the second step bracket is detachably connected to the front lower protective beam.

[0016] In some embodiments, the lower front protective crossbeam is provided with a mounting plate for securing it to the vehicle.

[0017] The beneficial effects of the technical solution provided in this application include:

[0018] This application provides a front lower protection assembly for a commercial vehicle, including a front lower protection crossbeam and a folding front step. The folding front step is disposed below the top surface of the front lower protection crossbeam and is rotatably connected to the front lower protection crossbeam in a horizontal direction, for unfolding or folding the folding front step. When the folding front step is in the unfolded state, the folding front step protrudes from the side wall of the front lower protection crossbeam.

[0019] In practical use, the main function of this front lower protective assembly is to provide convenient steps for getting on and off the vehicle while ensuring the structural strength of the vehicle's front end. It can also be folded away when not needed to optimize the vehicle's external profile and reduce wind resistance and potential collision risks during driving. The front lower protective beam is the main load-bearing structure of the assembly, responsible for supporting the entire protective assembly and ensuring its stability and safety during vehicle operation. The folding front step is positioned below the top surface of the front lower protective beam and can be connected to the beam by horizontal rotation, enabling it to be unfolded or folded. When unfolded, the folding front step protrudes from the side wall of the front lower protective beam, providing a suitable and stable platform for operators to stand on and clean the front of the commercial vehicle. Furthermore, the folding front step's horizontal rotation connection to the front lower protective beam does not occupy the vehicle's Z-axis space or affect the spatial arrangement of other components, avoiding inconvenience. Attached Figure Description

[0020] 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.

[0021] Figure 1 This is a schematic diagram of the overall structure of the front lower guard assembly provided in an embodiment of this application;

[0022] Figure 2 This is a schematic diagram of the front lower guard assembly with the folding front step in the folded state.

[0023] Figure 3 Exploded view of the front lower guard assembly;

[0024] Figure 4 This is a schematic diagram showing the front underrun protection assembly connected to the vehicle body.

[0025] Figure 5 for Figure 4 A diagram from another perspective;

[0026] Figure 6 This is a schematic diagram showing the unfolded and folded states of the folding front step and the torsion spring connection.

[0027] Figure 7 This diagram illustrates the unfolded and folded states of the folding front step and the electric strut connection.

[0028] Figure 8 This is a schematic diagram of the limiting component;

[0029] Figure 9 This is a schematic diagram showing the fixing of the limiting component to the side panel assembly.

[0030] Figure label:

[0031] 1. Front lower protective crossbeam; 2. Folding front step; 3. Torsion spring; 4. Electric strut; 5. Limiting component; 6. Side step assembly; 7. Mounting plate; 8. Body; 21. Step plate; 22. Side plate assembly; 23. Limiting hole; 51. Spring pin; 52. Spring plate; 53. Self-tapping screw; 61. First step bracket; 62. Second step bracket; 221. First side plate; 222. Second side plate. Detailed Implementation

[0032] 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.

[0033] This application provides a front underrun protection assembly for commercial vehicles, which solves the problem in related technologies where the front underrun protection crossbeam of commercial vehicles is too high, making it inconvenient to step on and causing inconvenience for cleaning the front of the vehicle.

[0034] See Figure 1 and Figure 4 As shown, this application embodiment provides a front lower protection assembly for a commercial vehicle, including a front lower protection crossbeam 1 and a folding front step 2. The folding front step 2 is disposed below the top surface of the front lower protection crossbeam 1, and the folding front step 2 is rotatably connected to the front lower protection crossbeam 1 in the horizontal direction, so as to enable the folding front step 2 to be unfolded or folded. When the folding front step 2 is in the unfolded state, the folding front step 2 protrudes from the side wall of the front lower protection crossbeam 1.

[0035] In practical use, the main function of this front lower protection assembly is to provide convenient steps for getting on and off the vehicle while ensuring the structural strength of the vehicle's front end. It can also be folded away when not needed to optimize the vehicle's external profile and reduce wind resistance and potential collision risks during driving. The front lower protection beam 1 is the main load-bearing structure of the assembly, responsible for supporting the entire protection assembly and ensuring its stability and safety during vehicle operation. The folding front step 2 is positioned below the top surface of the front lower protection beam 1 and can be horizontally rotated to connect to the front lower protection beam 1, enabling it to be unfolded or folded. When unfolded, the folding front step 2 protrudes from the side wall of the front lower protection beam 1, facilitating operator access and providing a suitable and stable platform for cleaning the front of the commercial vehicle. Furthermore, the folding front step 2's horizontal rotation connection to the front lower protection beam 1 does not occupy the vehicle's Z-axis space or affect the spatial arrangement of other components, avoiding inconvenience.

[0036] Normally, operators stand on the top surface of the front lower protective beam 1 to clean the vehicle in front. However, because the front lower protective beam 1 is quite high, it is not convenient for operators to stand on the top surface of the front lower protective beam 1. The folding front step 2 protrudes from the side wall of the front lower protective beam 1 and is lower than the top surface of the front lower protective beam 1, which makes it convenient for operators to step on it and stand on the folding front step 2 to clean the vehicle in front.

[0037] In some alternative embodiments, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, Figure 4 and Figure 5 The diagram shows the front lower protection assembly being connected and fixed to the vehicle body 8. The front lower protection assembly includes a front lower protection crossbeam 1 and a folding front step 2. The folding front step 2 is positioned below the top surface of the front lower protection crossbeam 1 and is rotatably connected to the front lower protection crossbeam 1 in the horizontal direction. It is used to unfold or fold the folding front step 2. When the folding front step 2 is in the unfolded state, the folding front step 2 protrudes from the side wall of the front lower protection crossbeam 1.

[0038] In practical use, the main function of this front lower protection assembly is to provide convenient steps for getting on and off the vehicle while ensuring the structural strength of the vehicle's front end. It can also be folded away when not needed to optimize the vehicle's external profile and reduce wind resistance and potential collision risks during driving. The front lower protection beam 1 is the main load-bearing structure of the assembly, responsible for supporting the entire protection assembly and ensuring its stability and safety during vehicle operation. The folding front step 2 is positioned below the top surface of the front lower protection beam 1 and can be horizontally rotated to connect to the front lower protection beam 1, enabling it to be unfolded or folded. When unfolded, the folding front step 2 protrudes from the side wall of the front lower protection beam 1, facilitating operator access and providing a suitable and stable platform for cleaning the front of the commercial vehicle. Furthermore, the folding front step 2's horizontal rotation connection to the front lower protection beam 1 does not occupy the vehicle's Z-axis space or affect the spatial arrangement of other components, avoiding inconvenience.

[0039] The front lower protective beam 1 has a longitudinally extending space to accommodate the folding front step 2. The front lower protective beam 1 is the main load-bearing structure of the assembly, responsible for supporting the entire protective assembly and ensuring its stability and safety during vehicle operation. The longitudinally extending space within the front lower protective beam 1 allows the folding front step 2 to be stored when not in use, maintaining a clean vehicle appearance and not interfering with the normal layout of the vehicle in front. Furthermore, the folding front step 2, when retracted into the front lower protective beam 1, ensures its stability and safety when unfolded.

[0040] In some alternative embodiments, such as Figures 1 to 3As shown, the folding front step 2 includes a step plate 21 and side plate assemblies 22 rotatably connected to both sides of the step plate 21. When the step plate 21 is folded, the two side plate assemblies 22 rotate in the same direction. The folding front step 2 is positioned below the top surface of the lower front protective beam 1 and can be rotatably connected to the lower front protective beam 1 in the horizontal direction to achieve the unfolding or folding function. When in the unfolded state, the folding front step 2 protrudes from the side wall of the lower front protective beam 1, providing a convenient standing platform for getting on and off the vehicle. The folding front step 2 includes a step plate 21 and side plate assemblies 22. Both sides of the step plate 21 are connected to the lower front protective beam 1 through the side plate assemblies 22. When rotated, the two side plate assemblies 22 rotate in the same direction, ensuring that when the folding front step 2 is folded, its folding rotation direction faces one side, without occupying too much length space within the lower front protective beam 1.

[0041] In some alternative embodiments, such as Figure 6 As shown, the two ends of the side plate assembly 22 are hinged to the step plate 21 and the front lower protective beam 1, respectively. The side plate assembly 22 includes a first side plate 221 disposed at the top of the step plate 21 and a second side plate 222 disposed at the bottom of the step plate 21. The two sides of the step plate 21 are connected to the front lower protective beam 1 through the side plate assembly 22. The two ends of the side plate assembly 22 are hinged to the step plate 21 and the front lower protective beam 1, respectively, and include the first side plate 221 and the second side plate 222, which are located at the top and bottom of the step plate 21, respectively, to ensure the stable rotation of the step plate 21.

[0042] In some alternative embodiments, such as Figure 1 , Figure 6 and Figure 7 As shown, one of the side panel assemblies 22 has a torsion spring 3 or an electric strut 4 at the end furthest from the step plate 21. Figure 1 and Figure 6 One of the side panel assemblies 22, at the end furthest from the step plate 21, is provided with a torsion spring 3. The torsion spring 3 is installed at the end of one of the side panel assemblies 22 furthest from the step plate 21 to provide assistance when the folding front step 2 is unfolded or folded, improving operational convenience. In some usage scenarios, such as... Figure 7 One of the side panel assemblies 22 is provided with an electric support rod 4 at the end away from the step plate 21. The electric support rod 4 is installed at the end of one of the side panel assemblies 22 away from the step plate 21 to improve the convenience of operation when automatically unfolding or folding the folding front step 2.

[0043] In some alternative embodiments, a limiting member 5 is provided at the bottom of the step plate 21 for limiting and fixing the step plate 21. The limiting member 5 is provided at the bottom of the step plate 21 to fix the folded front step 2 when it is in the folded state and prevent it from moving.

[0044] In some alternative embodiments, such as Figure 6 , Figure 8 and Figure 9 As shown, Figure 6 The diagram shows the two states of the foldable front step 2 when it is folded or unfolded. Figure 8 and Figure 9 This is a schematic diagram illustrating the locking and unlocking functions of the limiting component 5 for the folding front step 2. Figure 8 The limiting component 5 is a spring locking pin, which includes a spring plate 52 fixed to the front lower protective crossbeam 1 and a spring-loaded pin 51 snapped onto one end of the spring plate 52. A limiting hole 23 for matching the spring-loaded pin 51 is provided on the side plate assembly 22. The spring plate 52 is fixed by a self-tapping screw 53. The spring locking pin structure, including the spring plate 52 and the spring-loaded pin 51, works in conjunction with the limiting hole 23 on the side plate assembly 22. Figure 6 The diagram shows the folded and unfolded states of the step board 21, as follows: Figure 8 When the folding front step 2 needs to be unfolded, press the spring-loaded pin 51 to disengage it from the limiting hole 23 on the side panel assembly 22. Specifically, the limiting hole 23 can be located on the upper side panel, i.e., the first side panel 221. When unfolding the folding front step 2, press the spring-loaded pin 51 to disengage it from the limiting hole 23 on the first side panel 221, allowing for unfolding. After unfolding, the spring-loaded pin 51 will automatically return to its original position under the action of the spring plate 52. Figure 9 When it is necessary to fold up the folding front step 2, rotate the folding front step 2 so that the limiting hole 23 on the first side plate 221 is aligned with the spring pin 51 and is limited by the spring pin 51.

[0045] In some alternative embodiments, side step assemblies 6 are provided at both ends of the front lower protective beam 1. The side step assemblies 6 are installed at both ends of the front lower protective beam 1 to provide step points for passengers to get on and off the vehicle.

[0046] In some optional embodiments, the side step assembly 6 includes a first step bracket 61 and a second step bracket 62 spaced apart along the height direction. The first step bracket 61 is fixed to the top surface of the end of the front lower protective beam 1, and the second step bracket 62 is detachably connected to the front lower protective beam 1. The side step assembly 6 includes two step brackets, meaning it comprises two step brackets. Generally, commercial vehicles require three step brackets, with two on the vehicle body 8 and one additional one installed. However, the side step assembly 6 of this application, located at both ends of the front lower protective beam 1, includes a first step bracket 61 and a second step bracket 62. Thus, only one step bracket needs to be installed on the vehicle body 8, reducing the difficulty of vehicle assembly design. The second step bracket 62 is detachably connected to the front lower protective beam 1. In practical use, the second step bracket 62 can be detachably connected to the front lower protective beam 1 to adapt to different usage requirements.

[0047] In some alternative embodiments, a mounting plate 7 for securing the front lower protective beam 1 to the vehicle is provided. The mounting plate 7 on the front lower protective beam 1 further ensures the entire protective assembly is securely installed.

[0048] The commercial vehicle front underrun protection assembly of this application has the following significant advantages: It features a compact structure and ingenious design, achieving a perfect combination of safety protection and convenient entry and exit. The folding front step 2 allows it to be folded away when not in use, optimizing the vehicle's external profile and reducing wind resistance and potential collision risks during driving. The torsion spring 3 or electric strut 4 provides assistance when unfolding or folding the folding front step 2, improving operational convenience. The side step assembly 6 provides additional entry and exit points to adapt to different usage needs. The mounting plate 7 ensures a secure installation of the entire protection assembly onto the vehicle.

[0049] The front lower protection assembly of this application integrates a first step bracket 61 and a second step bracket 62, as well as a folding front step 2. This integrated setup using the front lower protection crossbeam 1 ensures the integrity of the overall structure and innovates the design concept of front lower protection for commercial vehicles. It helps to improve the overall assembly efficiency of the front lower protection and can help reduce the number of specific parts of the vehicle body 8, thereby reducing the overall production difficulty of the vehicle.

[0050] In summary, the commercial vehicle front underrun protection assembly of this application includes a front underrun protection crossbeam 1 and a folding front step 2. The folding front step 2 is disposed below the top surface of the front underrun protection crossbeam 1 and is rotatably connected to the front underrun protection crossbeam 1 in the horizontal direction, so as to enable the folding front step 2 to be unfolded or folded. When the folding front step 2 is in the unfolded state, the folding front step 2 protrudes from the side wall of the front underrun protection crossbeam 1.

[0051] In practical use, the main function of this front lower protection assembly is to provide convenient steps for getting on and off the vehicle while ensuring the structural strength of the vehicle's front end. It can also be folded away when not needed to optimize the vehicle's external profile and reduce wind resistance and potential collision risks during driving. The front lower protection beam 1 is the main load-bearing structure of the assembly, responsible for supporting the entire protection assembly and ensuring its stability and safety during vehicle operation. The folding front step 2 is positioned below the top surface of the front lower protection beam 1 and can be horizontally rotated to connect to the front lower protection beam 1, enabling it to be unfolded or folded. When unfolded, the folding front step 2 protrudes from the side wall of the front lower protection beam 1, facilitating operator access and providing a suitable and stable platform for cleaning the front of the commercial vehicle. Furthermore, the folding front step 2's horizontal rotation connection to the front lower protection beam 1 does not occupy the vehicle's Z-axis space or affect the spatial arrangement of other components, avoiding inconvenience.

[0052] The folding front step 2 includes a step plate 21 and side plate assemblies 22 rotatably connected to both sides of the step plate 21. When the step plate 21 is folded, the two side plate assemblies 22 rotate in the same direction. The folding front step 2 is positioned below the top surface of the lower front protective beam 1 and can be rotatably connected to the lower front protective beam 1 in the horizontal direction to achieve unfolding or folding functions. When unfolded, the folding front step 2 protrudes from the side wall of the lower front protective beam 1, providing a convenient standing platform for getting on and off the vehicle. The folding front step 2 includes a step plate 21 and side plate assemblies 22. Both sides of the step plate 21 are connected to the lower front protective beam 1 through the side plate assemblies 22. When rotated, the two side plate assemblies 22 rotate in the same direction, ensuring that when the folding front step 2 is folded, its folding rotation direction faces one side, without occupying too much length space within the lower front protective beam 1. The two ends of the side plate assembly 22 are respectively hinged to the step plate 21 and the front lower protective beam 1. The side plate assembly 22 includes a first side plate 221 disposed at the top of the step plate 21 and a second side plate 222 disposed at the bottom of the step plate 21. The two sides of the step plate 21 are connected to the front lower protective beam 1 through the side plate assembly 22. The two ends of the side plate assembly 22 are respectively hinged to the step plate 21 and the front lower protective beam 1, and include the first side plate 221 and the second side plate 222, which are located at the top and bottom of the step plate 21, respectively, to ensure the stable rotation of the step plate 21.

[0053] The front underrun protection assembly design of this application not only meets the basic safety requirements for front underrun protection of commercial vehicles, but also greatly improves the practicality and convenience of the vehicle through an integrated and modular design concept.

[0054] 1. Improved Assembly Efficiency: This application integrates the front lower protective beam 1, the folding front step 2, and the side step assembly 6 into a complete protective assembly module. This integrated design simplifies the assembly process, reduces assembly time, and improves production efficiency. Furthermore, the standardized interfaces between modules also reduce the error rate and rework rate during assembly.

[0055] 2. Reduced production difficulty and costs: Through integrated design, the number of body parts is reduced, which not only simplifies the body structure but also lowers production and procurement costs. Furthermore, the ease of replacement and maintenance of integrated modules also reduces the vehicle's long-term maintenance costs.

[0056] 3. Optimized vehicle appearance and performance: The integrated design of the front underrun protection assembly makes the vehicle's appearance cleaner and more aesthetically pleasing. At the same time, thanks to the ingenious design of the folding front step 2 and side step assembly 6, convenient entry and exit are provided without affecting the vehicle's driving performance and safety.

[0057] The folding front step 2 design optimizes space utilization: It fully utilizes the space beneath the front lower protective beam 1, providing a stable platform without occupying additional vehicle space. This design makes the vehicle more space-efficient. It also improves operator convenience: the unfolding and folding function of the folding front step 2 allows operators to more easily clean and maintain the front of the commercial vehicle. Simultaneously, the moderate height of the step 21 reduces the difficulty and risk for operators getting on and off the vehicle. The application of torsion springs 3 or electric struts 4 assists in unfolding and folding the folding front step 2, making operation easier and more convenient. This not only improves efficiency but also reduces the workload of operators.

[0058] The side step assembly 6 is designed to adapt to different usage needs: the side step assembly includes a first step bracket 61 and a second step bracket 62 spaced apart along the height direction. This design allows the side step assembly 6 to accommodate passengers of different heights and operating habits. At the same time, the detachable connection of the second step bracket 62 increases the flexibility of use. Reduced assembly design difficulty: by simply installing a single step bracket on the vehicle body 8 and cooperating with the side step assembly 6 on the front lower protective crossbeam 1, complete step functionality can be achieved. This design simplifies the assembly process of the vehicle body 8, reducing design difficulty and cost.

[0059] The front lower protection assembly design of this application cleverly combines the front lower protection beam 1, the folding front step 2, and the side step assembly 6 through an integrated and modular approach, forming a safe and practical protection assembly module. This design not only improves vehicle assembly efficiency and production performance but also reduces production costs and maintenance difficulty. Furthermore, the innovative design of the folding front step 2 and the side step assembly 6 makes the vehicle more convenient and efficient to use.

[0060] 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.

[0061] 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.

[0062] 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 commercial vehicle front underguard assembly characterized by, The utility model relates to a commercial vehicle front lower guard assembly, which comprises the following components: a front lower guard crossbeam (1); a folding front step (2) arranged below the top surface of the front lower guard crossbeam (1) and connected to the front lower guard crossbeam (1) in a horizontal direction for unfolding or folding the folding front step (2), wherein the folding front step (2) protrudes from the side wall of the front lower guard crossbeam (1) when unfolded; a receiving space formed in the front lower guard crossbeam (1) along the length direction for accommodating the folding front step (2); the folding front step (2) comprises a step plate (21) and side plate assemblies (22) connected to both sides of the step plate (21), wherein the two side plate assemblies (22) rotate in the same direction when the step plate (21) is folded; the two ends of each side plate assembly (22) are hingedly connected to the step plate (21) and the front lower guard crossbeam (1), respectively, and the side plate assembly (22) comprises a first side plate (221) arranged on the top of the step plate (21) and a second side plate (222) arranged on the bottom of the step plate (21); one end of one side plate assembly (22) away from the step plate (21) is provided with a torsional spring (3) or an electric supporting rod (4).

2. The commercial vehicle front lower guard assembly according to claim 1, wherein: the bottom of the step plate (21) is provided with a limiting piece (5) for limiting and fixing the step plate (21).

3. The commercial vehicle front lower guard assembly according to claim 2, wherein: the limiting piece (5) is a spring lock pin, which comprises a spring sheet (52) fixed to the front lower guard crossbeam (1) and a spring top pin (51) clamped to one end of the spring sheet (52), and the side plate assembly (22) is provided with a limiting hole (23) matched with the spring top pin (51).

4. The commercial vehicle front lower guard assembly according to claim 1, wherein: both ends of the front lower guard crossbeam (1) are provided with side step assemblies (6).

5. The commercial vehicle front lower guard assembly according to claim 4, wherein: the side step assembly (6) comprises first and second step brackets (61, 62) arranged at intervals in the height direction, wherein the first step bracket (61) is fixed to the top surface of the end of the front lower guard crossbeam (1), and the second step bracket (62) is detachably connected to the front lower guard crossbeam (1).

6. The commercial vehicle front lower guard assembly according to claim 1, wherein: the front lower guard crossbeam (1) is provided with a mounting plate (7) for fixing to a vehicle.

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