Universal bumper assembly for heavy-duty vehicle

Abstract

The utility model discloses a universal bumper assembly for a heavy-duty vehicle, which relates to the field of bumpers and comprises a bumper, step assemblies are respectively mounted at two ends of the bumper, each step assembly comprises a second-stage step, a first-stage step and a mounting seat connected between the first-stage step and the second-stage step, one side of the second-level step is fixed to the end of the bumper, the bottom of the second-level step is fixed to the mounting base, the bottom of the mounting base is connected with the upper end of the first-level step, and a pedal is arranged at the lower end of the first-level step. The technical defect that a pedal of a bumper assembly in the prior art is unstable is overcome, safety of a driver and passengers when the driver and the passengers get on and off a vehicle is improved, and cost is reduced at the same time.

Description

Technical Field

[0001] The utility model relates to the field of bumpers, in particular to a universal bumper assembly for heavy-duty vehicles. Background Art

[0002] In the automotive field, especially for heavy-duty vehicles, the vehicle's bumper and pedal guard constitute the main exterior structure of the vehicle. When designing the external functional parts of the cab of a heavy-duty vehicle, the structure is required to have its functionality and be easy to install and disassemble with a simple structure. During driving, various complex working conditions are considered, and good vehicle passing performance is required, while also meeting the cab occupants' needs for getting on and off the vehicle well.

[0003] The bumper assembly is a key functional component of a heavy-duty vehicle, which includes the front bumper and foot pedals. The front bumper is located at the front of the vehicle, protecting the front of the vehicle and improving the overall appearance of the vehicle. The foot pedals are usually installed on the side of the vehicle, providing a platform for passengers to get on and off easily. At present, there are two common ways to fix the foot pedals: one is to connect them through steel wire ropes, and the other is to use a driving cylinder to support them.

[0004] However, both methods have obvious defects. Foot pedals connected by wire ropes are prone to shaking when passengers get on and off the vehicle due to their inherent connection method, causing instability and even increasing the risk of falling, which will pose a threat to the safety of passengers. Another method is to use foot pedals supported by drive cylinders. Although it is more stable, its structure is more complicated and the cost is higher. Moreover, once the air pressure of the drive cylinder is insufficient, it cannot reliably support the passengers, causing the foot pedal to shake, which will also affect the safety of the passengers. Utility Model Content

[0005] The embodiment of the present application provides a universal heavy-duty vehicle bumper assembly to solve the technical defect of unstable foot pedal of the bumper assembly in the prior art, thereby improving the safety of drivers and passengers when getting on and off the vehicle and reducing costs.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: a universal heavy-duty vehicle bumper assembly, including a bumper, with step assemblies installed at both ends of the bumper, respectively. The step assembly includes a secondary step, a primary step, and a mounting seat connected between the primary step and the secondary step, wherein one side of the secondary step is fixed to the end of the bumper, the bottom of the secondary step is fixed to the mounting seat, the bottom of the mounting seat is connected to the upper end of the primary step, and the lower end of the primary step has a pedal.

[0007] When entering the cab, the driver and passengers first step on the footrest of the first step and then step on the footrest of the second step. Since the second step is fixed to the end of the bumper, it has higher stability and safety. Moreover, the first step is installed under the second step by hoisting, which makes the structure lighter and reduces costs.

[0008] Furthermore, the bumper includes a left bumper section, a middle bumper section, and a right bumper section.

[0009] Furthermore, the left section of the bumper is fixed to the middle section of the bumper by bolts, and the right section of the bumper is fixed to the middle section of the bumper by bolts; thereby, the disassembly and assembly of the bumper can be made more convenient.

[0010] Furthermore, the left end of the left section of the bumper is fixed to the secondary step of the corresponding step assembly by bolts, and the right end of the right section of the bumper is fixed to the secondary step of the corresponding step assembly by bolts.

[0011] Furthermore, the mounting seat includes an upper mounting seat and a lower mounting seat, the upper mounting seat is fixed to the secondary step, and the lower mounting seat is fixed to the upper mounting seat by bolts; the upper end of the primary step is fixed to the lower mounting seat.

[0012] Furthermore, the lower mounting seat is provided with through holes running through the left and right sides thereof, in which a rotating shaft is installed, and the rotating shaft runs through the upper end of the first step; thus, when the first step is subjected to a frontal force, the first step can swing backward relative to the mounting seat, thereby improving the vehicle's passability.

[0013] Furthermore, the lower mounting seat is also provided with pin holes running through the left and right sides thereof, in which a movable locking pin and a movable locking pin sleeve capable of axially fixing the movable locking pin are installed, and the movable locking pin sleeve has two fixed positions. When the movable locking pin is fixed relative to one of the fixed positions of the movable locking pin sleeve, the upper end of the first-stage step can be blocked by the end of the movable locking pin, thereby preventing it from rotating relative to the mounting seat; thereby, the locking of the first-stage step is achieved, thereby having greater stability.

[0014] Furthermore, a return spring is embedded in the outer periphery of the rotating shaft; when the first step is subjected to a frontal force and swings backward, the return spring can realize automatic return of the first step.

[0015] Furthermore, a rubber pad is provided at the bottom of the lower mounting seat, and the rubber pad is installed between the upper end of the first step and the lower mounting seat; thereby, during the automatic return of the first step, the rubber pad can play a role in buffering, shock absorption and limiting.

[0016] Furthermore, the foot treads of the first-level step and the second-level step are both provided with a multi-row anti-skid structure of round holes; thereby, the first-level step and the second-level step can have better anti-skid performance.

[0017] It can be seen from the above technical solutions that the utility model has at least the following technical effects or advantages:

[0018] When entering the cab, the driver and passengers first step on the footrest of the first step and then step on the footrest of the second step. Since the second step is fixed to the end of the bumper, it has higher stability and safety. Moreover, the first step is installed under the second step by hoisting, which makes the structure lighter and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the utility model, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the sections of the bumper in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the step assembly in the utility model;

[0023] Figure 4 It is an exploded view of the step assembly in the utility model;

[0024] Figure 5 It is a schematic diagram when the movable locking pin is in the first limit position;

[0025] Figure 6 It is a schematic diagram when the movable locking pin is in the second limit position;

[0026] Figure 7 is a cross-sectional schematic diagram of a step assembly;

[0027] Figure 8 The figure is a schematic diagram of the swing of a first step;

[0028] Fig. 9 It is a schematic diagram of the anti-skid structure of the round hole in the utility model.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. Left section of bumper, 2. Middle section of bumper, 3. Right section of bumper, 4. Step assembly, 5. First-level step, 6. Second-level step, 7. Lower mounting seat, 8. Movable locking pin bushing, 9. Movable locking pin, 10. Rotating shaft, 11. Return spring, 12. Rubber pad, 13. Upper mounting seat, 14. Round hole anti-slip structure. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0031] The utility model discloses a universal heavy-duty vehicle bumper assembly, such as Figure 1 As shown, it includes a bumper, and a step assembly 4 is respectively installed at both ends of the bumper. The step assembly 4 is composed of two levels of steps, namely a secondary step 6 and a primary step 5. The primary step 5 is connected to the secondary step 6 through a mounting seat. Among them, one side of the secondary step 6 is connected and fixed to the end of the bumper to ensure the overall stability. At the same time, the bottom of the secondary step 6 is fixed to the mounting seat, and the bottom of the mounting seat is connected to the upper end of the primary step 5. In addition, a pedal is provided at the lower end of the primary step 5, and the upper surface of the pedal is the footrest surface of the primary step 5.

[0032] When entering the cab, the driver and passengers first step on the footrest surface of the first-level step 5 and then step on the footrest surface of the second-level step 6. Since the second-level step 6 is fixed to the end of the bumper, it has higher stability and safety. Moreover, the first-level step 5 is installed under the second-level step 6 by hoisting, which makes the structure lighter and reduces costs.

[0033] like Figure 1 , Figure 2 As shown, the bumper includes a left bumper section 1, a middle bumper section 2, and a right bumper section 3. The left bumper section 1 is fixed to the middle bumper section 2 by bolts, and the right bumper section 3 is fixed to the middle bumper section 2 by bolts. In addition, the left end of the left bumper section 1 is fixed to the secondary step 6 of the corresponding step assembly 4 by bolts, and the right end of the right bumper section 3 is fixed to the secondary step 6 of the corresponding step assembly 4 by bolts. This makes it easier to disassemble and assemble the bumper and the secondary step 6.

[0034] like Figure 3 As shown, the mounting seat includes an upper mounting seat 13 and a lower mounting seat 7. The bottom of the upper mounting seat 13 and the top of the lower mounting seat 7 are both provided with holes that penetrate from top to bottom. Thus, the upper mounting seat 13 and the lower mounting seat 7 can be fixed by bolts and nuts. In addition, in this embodiment, the upper mounting seat 13 is fixed to the secondary step 6, and the upper end of the primary step 5 is fixed to the lower mounting seat 7. Figure 4As shown, the lower mounting seat 7 is provided with through holes running through the left and right sides thereof, in which a rotating shaft 10 is installed, and the rotating shaft 10 runs through the upper end of the first step 5. Therefore, when the first step 5 is subjected to a frontal force, the first step 5 can swing backward relative to the mounting seat, thereby improving the passability of the vehicle.

[0035] In addition, the lower mounting seat 7 is also provided with pin holes running through the left and right sides thereof, in which a movable locking pin 9 and a movable locking pin sleeve 8 capable of axially fixing the movable locking pin 9 are installed. The movable locking pin sleeve 8 has two fixed positions. When the movable locking pin 9 is fixed relative to a fixed position (i.e., the first limit position) of the movable locking pin sleeve 8, the upper end of the first step 5 can be blocked by the end of the movable locking pin 9, thereby preventing it from rotating relative to the mounting seat.

[0036] Specifically in this embodiment, Figures 4 to 6 On the one hand, both the left and right sides of the first step 5 have side edges, wherein the side edge of one side of the upper end of the first step 5 is higher than the side edge of the other side. On the other hand, the two fixing positions of the movable lock pin sleeve 8 are grooves, and the two grooves are located at different axial positions of the movable lock pin sleeve 8. Correspondingly, the middle part of the movable lock pin 9 has a radially protruding protrusion, such as Figure 5 As shown, the protrusion is located in a groove of the movable lock pin sleeve 8 (first limit), and one end of the movable lock pin 9 extends out of one side of the lower mounting seat 7, thereby blocking the side edge of the upper end of the first step plate 5. This achieves the locking of the first step 5 with greater stability. Figure 6 As shown, when the movable locking pin is located in another groove of the movable sleeve 8 (second limit), the other end of the movable locking pin 9 locks the interior of the lower mounting seat 7, thereby canceling the activity restriction on the first step 5.

[0037] When the protrusion is located in a groove of the movable locking pin sleeve 8, one end of the movable locking pin 9 can extend out of one side of the lower mounting seat 7, thereby blocking the side edge of the upper end of the first step 5, thereby achieving the locking of the first step 5 with greater stability.

[0038] On the other hand, a return spring 11 is embedded in the outer circumference of the rotating shaft 10. The return spring 11 is a torsion spring. When the first step 5 is subjected to a positive force and swings backward, the first step 5 can be automatically returned by the return spring 11. In addition, a rubber pad 12 is provided at the bottom of the lower mounting seat 7. The rubber pad 12 is located between the upper end of the first step 5 and the lower mounting seat 7. Its function is to avoid direct collision between the upper end of the first step 5 and the lower mounting seat 7 during the return of the first step 5, thereby playing a role of buffering, shock absorption and limiting.

[0039] like Fig. 9As described above, the foot treads of the first-level step 5 and the second-level step 6 are both provided with a plurality of rows of round hole anti-skid structures 15. Thus, the first-level step 5 and the second-level step 6 can have good anti-skid performance.

[0040] In the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the purpose of describing the present invention rather than requiring the present invention to be constructed or operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "connected" and "connected" in the present invention should be understood in a broad sense, for example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in their embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novelties disclosed herein.

Claims

1. A general-purpose heavy-duty vehicle bumper assembly, comprising a bumper, with step assemblies (4) mounted on both ends of the bumper, characterized in that: The step assembly (4) comprises a secondary step (6), a primary step (5) and a mounting seat connected between the primary step (5) and the secondary step (6), wherein one side of the secondary step (6) is fixed to the end of the bumper, the bottom of the secondary step (6) is fixed to the mounting seat, the bottom of the mounting seat is connected to the upper end of the primary step (5), and the lower end of the primary step (5) has a pedal; The mounting seat comprises an upper mounting seat (13) and a lower mounting seat (7); The lower mounting seat (7) is provided with through holes penetrating the left and right sides thereof, a rotating shaft (10) is installed in the through holes, and the rotating shaft (10) penetrates the upper end of the first step (5); The lower mounting seat (7) is also provided with pin holes running through the left and right sides thereof, and a movable locking pin (9) and a movable locking pin shaft sleeve (8) capable of axially fixing the movable locking pin (9) are installed in the pin holes, and the movable locking pin shaft sleeve (8) has two fixing positions. When the movable locking pin (9) is fixed relative to one of the fixing positions of the movable locking pin shaft sleeve (8), the upper end of the first step (5) can be blocked by the end of the movable locking pin (9).

2. A universal heavy-duty vehicle bumper assembly according to claim 1, characterized in that: The bumper comprises a left bumper section (1), a middle bumper section (2) and a right bumper section (3).

3. A universal heavy-duty vehicle bumper assembly according to claim 2, characterized in that: The left section (1) of the bumper is fixed to the middle section (2) of the bumper by bolts, and the right section (3) of the bumper is fixed to the middle section (2) of the bumper by bolts.

4. A universal heavy-duty vehicle bumper assembly according to claim 3, characterized in that: The left end of the left section (1) of the bumper is fixed to the secondary step (6) of the corresponding step assembly (4) through bolts, and the right end of the right section (3) of the bumper is fixed to the secondary step (6) of the corresponding step assembly (4) through bolts.

5. A universal heavy-duty vehicle bumper assembly according to claim 1, characterized in that: The upper mounting seat (13) is fixed to the secondary step (6), and the lower mounting seat (7) is fixed to the upper mounting seat (13) by bolts; the upper end of the primary step (5) is fixed to the lower mounting seat (7).

6. A universal heavy-duty vehicle bumper assembly according to claim 1, characterized in that: A return spring (11) is nested on the outer circumference of the rotating shaft (10).

7. A universal heavy-duty vehicle bumper assembly according to claim 5, characterized in that: A rubber pad (12) is provided at the bottom of the lower mounting seat (7), and the rubber pad (12) is installed between the upper end of the first step (5) and the lower mounting seat (7).

8. A universal heavy-duty vehicle bumper assembly according to claim 1, characterized in that: The foot tread surfaces of the first-stage step (5) and the second-stage step (6) are both provided with a plurality of rows of round hole anti-slip structures (14).

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