A vehicle rear protection device and a vehicle

Abstract

The present invention provides a vehicle rear protection device and a vehicle, belonging to the field of vehicle technology. The vehicle rear protection device includes a mounting seat, a rear protection body and a locking mechanism. One end of the rear protection body is hinged to the mounting seat. The mounting seat is provided with a plurality of locking matching parts arranged in an arc shape, and the center of the circle where the plurality of locking matching parts are located is located on the axis of the rotation trajectory of the other end of the rear protection body. The locking mechanism includes a locking body, an elastic member and a locking part arranged on the locking body. The locking body is arranged on the rear protection body, and the elastic member is used to drive the locking part to move so that at least part of the locking part is inserted into the corresponding locking matching part. The rear protection body can automatically flip upward to cross obstacles, and can automatically fix at a corresponding height after crossing the obstacle. There is no need to disassemble some parts, and no need to use additional disassembly tools. The only operation is to press down the rear protection body to swing it downward to the lowest position, which is convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and more particularly, to a vehicle rear protection device and a vehicle. Background Art

[0002] Engineering vehicles refer to vehicles used in construction projects. Generally, the bodies of such vehicles are relatively high. In order to effectively prevent pedestrians and vehicles behind from drilling under the vehicle during a collision, rear protection is generally provided at the rear of engineering vehicles. Due to the existence of the rear protection, two problems need to be considered. One is the problem that the rear protection affects the vehicle's passage due to a small ground clearance, and the other is the problem that the rear protection hinders the vehicle from towing a trailer due to a small ground clearance.

[0003] To solve the above two problems, it is necessary to make the rear protection adjustable in ground clearance and fixed at a certain height, so that the vehicle can pass through the obstacles on the road surface, and the rear protection fixed at a certain height position will not hinder the towing behind. The first structure of the existing rear protection is detachably connected to the rear frame. When encountering an obstacle on the road surface, it is necessary to remove the rear protection, then move the rear protection upward, and fix the height with bolts. The second structure of the rear protection is hinged to the rear frame and the angle is fixed by bolts. When encountering an obstacle on the road surface, it is necessary to first remove the bolts, then swing the rear protection upward, and then fix the angle with bolts, and finally fix the rear protection at a higher position. However, the operation of these two types of rear protection structures is relatively cumbersome when adjusting the height, and it is necessary to disassemble and assemble the bolts multiple times with other tools, which also has a certain degree of operation difficulty. Summary of the Invention

[0004] The present invention aims to solve the problems that the operation of adjusting the height of the existing rear protection is complex and has a certain degree of operation difficulty.

[0005] The present invention provides a vehicle rear protection device, which includes a mounting seat, a rear protection main body and a locking mechanism. One end of the rear protection main body is hinged to the mounting seat. The mounting seat is provided with a plurality of locking and cooperating parts arranged in an arc shape, and the center of the circle where the plurality of locking and cooperating parts are located is on the axis of the rotation trajectory of the other end of the rear protection main body. The locking mechanism includes a locking main body, an elastic member and a locking part arranged on the locking main body. The locking main body is arranged on the rear protection main body, and the elastic member is used to drive the locking part to move, so that at least part of the locking part is inserted into the corresponding locking and cooperating part.

[0006] The vehicle rear protection device provided by the present invention, compared with the prior art, has but is not limited to the following beneficial effects:

[0007] The entire vehicle rear protection device can be installed at the rear frame of the engineering vehicle through the mounting base. Before the engineering vehicle hits the road, the rear protection main body can be swung downward to the lowest position. During the process of the rear protection main body swinging to the lowest position, under the action of the elastic member, the elastic member will drive the locking portion to move along the locking main body until it is inserted into the locking engagement portion at the bottommost position. At this time, the rear protection main body is fixed at the lowest position, playing a basic protection function after hitting the road. After hitting the road, if there is an obstacle on the road surface, after the front part of the vehicle crosses the obstacle, the front side of the rear protection main body contacts the obstacle. Under the reaction force of the obstacle, the rear protection main body passively overcomes the elastic force of the elastic member, which also causes the locking portion to gradually overcome the elastic force of the elastic member and disengage from the locking engagement portion. At the same time, the rear protection main body realizes passive upward flipping, thereby realizing that the rear protection main body crosses the obstacle and ensuring the passing performance of the vehicle. Since the multiple locking engagement portions at different height positions are arranged in an arc shape, in other words, the centers of the multiple locking engagement portions can be regarded as being on a circle, and the center of the circle where they are located is located on the axis of the rotation trajectory of the rear protection main body. Thus, when the rear protection main body passively flips upward to cross the obstacle, the elastic member will also drive the locking portion to insert into the locking engagement portion at the corresponding height position, and the rear protection main body is automatically fixed again. The rear protection main body of the present invention can automatically flip upward to cross the obstacle and can be automatically fixed at the corresponding height after crossing the obstacle, without disassembling some components, and even more without the aid of additional disassembly tools. The only operation required is to simply press down the rear protection main body so that it swings downward to return to the lowest position, or, by lifting up the rear protection main body, it flips upward and is fixed at a higher position for the vehicle to tow a trailer, and the operation is convenient.

[0008] Further, the locking engagement portion is a locking hole, and the locking portion is a locking pin;

[0009] The inner wall of the locking hole is provided with a conical guiding surface, and / or, one end of the locking pin away from the elastic member is provided with a spherical surface.

[0010] Further, the rear protection main body includes a protection bar and a connecting plate. Among them, one end of the connecting plate is hinged to the mounting base, the other end of the connecting plate is connected to the protection bar, and the locking main body is arranged on the connecting plate.

[0011] Further, two of the connecting plates are set as a group of connecting plates, the mounting base includes two mounting plates arranged at intervals, and a group of connecting plates is placed between the two mounting plates, and a group of connecting plates are respectively hinged to the two mounting plates;

[0012] Two symmetrically arranged locking parts are provided on the locking body. The elastic member is located between the two locking parts. The elastic member is used to drive the two locking parts on both sides to move away from each other, so that at least part of the two locking parts on both sides are respectively inserted into the corresponding locking and mating parts on the mounting plates on both sides.

[0013] Further, the locking body is arranged between a group of connecting plates, and through holes for the locking parts to pass through are provided on the connecting plates.

[0014] Further, the locking body includes a cylinder body. The two locking parts are respectively slidably connected to the cylinder body. First limiting steps are respectively provided at both ends of the inner wall of the cylinder body. Second limiting steps are provided at one ends of the two locking parts close to each other. The second limiting step and the elastic member are respectively located between the two first limiting steps.

[0015] Further, the cylinder body includes two half-cylinders, and the two half-cylinders are used for splicing into the cylinder body.

[0016] Further, flanging edges are respectively provided at the splicing ends of the two half-cylinders, and the two flanging edges are used for connection by fasteners.

[0017] Further, multiple groups of the connecting plates are arranged along the length direction of the protection bar, and a mounting seat is provided at one end of each group of connecting plates away from the protection bar.

[0018] The present invention also provides a vehicle, including a rear frame and the vehicle rear protection device as described above. The mounting seat of the vehicle rear protection device is installed at the rear frame.

[0019] Since the technical improvements and beneficial effects of the vehicle are the same as those of the vehicle rear protection device, the vehicle will not be described in detail herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural view of the vehicle rear protection device according to an embodiment of the present invention;

[0021] Figure 2 It is a front view of the vehicle rear protection device according to an embodiment of the present invention;

[0022] Figure 3 It is a schematic structural view of the mounting seat according to an embodiment of the present invention;

[0023] Figure 4 It is a schematic structural view of a group of connecting plates according to an embodiment of the present invention;

[0024] Figure 5 It is a schematic structural view of the locking mechanism according to an embodiment of the present invention;

[0025] Figure 6 Explosion schematic diagram of the locking mechanism according to an embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 1. Mounting base; 11. Mounting plate; 111. Mounting hole; 112. Locking cooperation part; 1121. Conical guiding surface; 2. Rear protection main body; 21. Protection bar; 22. Connecting plate; 221. Connecting hole; 222. Through hole; 3. Locking mechanism; 31. Cylinder body; 311. Half cylinder; 3111. Flanged edge; 32. Elastic member; 33. Locking part; 331. Spherical surface; 4. Rear vehicle frame; 5. Pin shaft. Detailed implementation manners

[0028] To make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention is provided in conjunction with the accompanying drawings.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0030] Moreover, in the accompanying drawings, the Z-axis represents the vertical direction, that is, the up and down position, and the positive direction of the Z-axis (that is, the arrow direction of the Z-axis) represents up, and the negative direction of the Z-axis (that is, the direction opposite to the positive direction of the Z-axis) represents down; the X-axis represents the longitudinal direction, that is, the front and rear position, and the positive direction of the X-axis (that is, the arrow direction of the X-axis) represents front, and the negative direction of the X-axis (that is, the direction opposite to the positive direction of the X-axis) represents rear; the Y-axis represents the transverse direction, that is, the left and right position, and the positive direction of the Y-axis (that is, the arrow direction of the Y-axis) represents left, and the negative direction of the Y-axis (that is, the direction opposite to the positive direction of the Y-axis) represents right.

[0031] It should be noted at the same time that the above-mentioned meanings represented by the Z-axis, X-axis and Y-axis are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0032] See Figure 1 and Figure 2, a vehicle rear protection device according to an embodiment of the present invention includes a mounting seat 1, a rear protection main body 2 and a locking mechanism 3. One end of the rear protection main body 2 is hinged to the mounting seat 1. The mounting seat 1 is provided with a plurality of locking cooperation parts 112 arranged in an arc shape, and the center of the circle where the plurality of locking cooperation parts 112 are located is on the axis of the rotation track of the other end of the rear protection main body 2. The locking mechanism 3 includes a locking main body, an elastic member 32 and a locking portion 33 provided on the locking main body. The locking main body is provided on the rear protection main body 2. The elastic member 32 is used to drive the locking portion 33 to move so that at least part of the locking portion 33 is inserted into the corresponding locking cooperation part 112.

[0033] In this embodiment, the entire vehicle rear protection device can be installed at the rear frame 4 of the engineering vehicle through the mounting seat 1. Before the engineering vehicle hits the road, the rear protection main body 2 can be swung downward to the lowest position. During the process of the rear protection main body 2 swinging to the lowest position, under the action of the elastic member 32, the elastic member 32 will drive the locking portion 33 to move along the locking main body until it is inserted into the lowermost locking cooperation part 112. At this time, the rear protection main body 2 is fixed at the lowest position, playing a basic protection function after hitting the road.

[0034] After hitting the road, if there is an obstacle on the road surface, after the front part of the vehicle crosses the obstacle, the front side of the rear protection main body 2 contacts the obstacle. Under the reaction force of the obstacle, the rear protection main body 2 is passively overcome the elastic force of the elastic member 32, which also makes the locking portion 33 gradually overcome the elastic force of the elastic member 32 and disengage from the locking cooperation part 112, and at the same time realizes the passive upward flipping of the rear protection main body 2, thereby realizing the rear protection main body 2 crossing the obstacle and ensuring the passability of the vehicle. Since the plurality of locking cooperation parts 112 at different height positions are arranged in an arc shape, in other words, the centers of the plurality of locking cooperation parts can be regarded as on a circle, and the center of the circle where they are located is on the axis of the rotation track of the rear protection main body 2. Thus, when the rear protection main body 2 is passively flipped upward to cross the obstacle, the elastic member 32 will also drive the locking portion 33 to be inserted into the locking cooperation part 112 at the corresponding height position, and the rear protection main body 2 is automatically fixed again.

[0035] The rear protection main body 2 of this embodiment can automatically flip upward to cross the obstacle, and can be automatically fixed at the corresponding height after crossing the obstacle, without disassembling some parts, and even more without the help of additional disassembly tools. The only operation is to simply press down the rear protection main body 2 to make it swing downward to return to the lowest position, or, by lifting the rear protection main body 2 upward to make it flip upward and fixed at a higher position for the vehicle to tow a trailer, the operation is convenient.

[0036] Among them, the mounting base 1 may be provided with a mounting hole 111, and one end of the rear protection main body 2 is provided with a connection hole 221. The mounting hole 111 and the connection hole 221 are connected by a pin shaft 5, thereby realizing the hinged relationship between the rear protection main body 2 and the mounting base 1. The elastic member 32 may be a spring.

[0037] Among them, when the rear protection main body 2 swings down to the lowest position, one end of the rear protection main body 2 refers to its top end, and the other end of the rear protection main body 2 refers to its bottom end.

[0038] See Figures 1 - 6 , optionally, the locking and mating part 112 is a locking hole, and the locking part 33 is a locking pin;

[0039] The inner wall of the locking hole is provided with a conical guide surface 1121, or / and, the end of the locking pin away from the elastic member 32 is provided with a spherical surface 331.

[0040] In this embodiment, the locking and mating part 112 is a hole structure, denoted as a locking hole, and the locking part 33 is a plug structure, denoted as a locking pin. In order to ensure that the locking pin can slide out or into the locking hole as the rear protection main body 2 rotates, the inner wall of the locking hole can be set as a conical guide surface 1121; or, the end of the locking pin away from the elastic member 32 is set as a spherical surface 331; or, both the inner wall of the locking hole is set as a conical guide surface 1121 and the end of the locking pin away from the elastic member 32 is set as a spherical surface 331, so that it is easier and smoother to enter and exit the locking hole. Among them, the locking hole can be either a through hole or a blind hole.

[0041] In other embodiments, the locking and mating part 112 can also be a groove structure, and the opposite side walls of the groove structure are provided with guide surfaces for the locking part 33 to enter or slide out.

[0042] It should be noted that the fixation of the rear protection main body 2 is relative, and it can still continue to rotate when the external force on the rear protection main body 2 is large.

[0043] See Figure 1 and Figure 2 , optionally, the rear protection main body 2 includes a protection bar 21 and a connection plate 22. Among them, one end of the connection plate 22 is hinged to the mounting base 1, the other end of the connection plate 22 is connected to the protection bar 21, and the locking main body is arranged on the connection plate 22.

[0044] In this embodiment, specifically, the rotation of the connection plate 22 drives the height adjustment of the protection bar 21. The length direction of the protection bar 21 is horizontal, so that even if a rear vehicle collides, there is a large contact area with the protection bar 21.

[0045] Wherein, when the rear protection main body 2 swings downward to the lowest position, one end of the rear protection main body 2 specifically refers to the top end of the connecting plate 22, and the other end of the rear protection main body 2 specifically refers to the bottom end of the protection bar 21.

[0046] See Figures 1 - 6 , optionally, the two connecting plates 22 are set as a group of connecting plates 22, the mounting seat 1 includes two mounting plates 11 arranged at intervals, a group of connecting plates 22 is placed between the two mounting plates 11, and a group of connecting plates 22 are respectively hinged to the two mounting plates 11;

[0047] Two symmetrically arranged locking parts 33 are arranged on the locking main body, the elastic member 32 is located between the two locking parts 33, and the elastic member 32 is used to drive the two locking parts 33 on both sides to move away from each other, so that at least part of the two locking parts 33 on both sides are respectively inserted into the corresponding locking and matching parts 112 on the two mounting plates 11 on both sides.

[0048] In this embodiment, the two mounting plates 11 of the mounting seat 1 can be directly fixed to the rear vehicle frame 4 at intervals, or the two connecting plates 22 can be connected and fixed by a cross plate in advance, and then the mounting seat 1 is integrally fixed to the rear vehicle frame 4. A group of connecting plates 22 is located between the two mounting plates 11. In this way, the two locking parts 33 on the left and right sides of the elastic member 32, specifically the two locking pins on both sides, can be inserted into the locking holes at the corresponding height positions under the action of elastic force, so as to fix the rear protection main body 2.

[0049] See Figures 1 - 6 , optionally, the locking main body is arranged between a group of connecting plates 22, and through holes 222 for the locking parts 33 to pass through are arranged on the connecting plates 22.

[0050] In this embodiment, the locking main body is specifically arranged between a group of connecting plates 22, and through holes 222 are arranged on the connecting plates 22 for the locking pins to pass through. Moreover, the distance from the mounting hole 111 to the locking and matching part 112 is equal to the distance from the connecting hole 221 to the through hole 222. In this way, it is ensured that the rotation trajectory of the locking part 33 coaxially arranged in the through hole 222 is on the circle where the multiple locking and matching parts 112 are located.

[0051] Wherein, the locking main body can be fixed between a group of connecting plates 22, which will not occupy extra space and can also strengthen the structural strength between a group of connecting plates 22; or / and, the pre-tightening force of the elastic member 32 enables the end of the locking pin to pass through the corresponding through hole 222, and the installation of the locking mechanism 3 can also be realized.

[0052] See Figure 5 and Figure 6, optionally, the locking body includes a cylinder 31, two of the locking portions 33 are respectively slidably connected to the cylinder 31, first limiting steps are respectively arranged at both ends of the inner wall of the cylinder 31, a second limiting step is arranged at one end of the two locking portions 33 close to each other, and the second limiting step and the elastic member 32 are respectively located between the two first limiting steps.

[0053] In this embodiment, second limiting steps are respectively arranged at one ends of the two locking pins close to each other, and first limiting steps are respectively arranged at both ends of the inner wall of the cylinder 31. Through the first limiting steps, the locking pins can be prevented from completely coming out of the cylinder 31.

[0054] See Figure 5 and Figure 6 , optionally, the cylinder 31 includes two half cylinders 311, and the two half cylinders 311 are used for splicing into the cylinder 31.

[0055] In this embodiment, the cylinder 31 is composed of two spliced half cylinders 311. The spliced structure of the cylinder 31 facilitates the installation of the elastic member 32 and the two locking pins into the cylinder 31.

[0056] See Figure 5 and Figure 6 , optionally, the splicing ends of the two half cylinders 311 are respectively provided with outward flanges 3111, and the two outward flanges 3111 are used for connection by fasteners.

[0057] In this embodiment, after the two half cylinders 311 are butted, the two outward flanges 3111 can be connected and fixed by fasteners such as bolts or screws.

[0058] See Figure 1 and Figure 2 , optionally, multiple groups of the connecting plates 22 are arranged along the length direction of the protective bar 21, and one of the mounting seats 1 is arranged at one end of each group of the connecting plates 22 away from the protective bar 21.

[0059] In this embodiment, multiple groups of the connecting plates 22 are connected to the rear vehicle frame 4 through multiple mounting seats 1, which can ensure the balance of the protective bar 21 and the stability during flipping.

[0060] A vehicle according to another embodiment of the present invention includes a rear vehicle frame 4 and the vehicle rear protection device as described above, and the mounting seat 1 of the vehicle rear protection device is mounted at the rear vehicle frame 4.

[0061] Since the technical improvements and beneficial effects of the vehicle are the same as those of the vehicle rear protection device, the vehicle will not be described in detail herein.

[0062] In this embodiment, the vehicle can be an engineering vehicle or a vehicle such as a pickup truck.

[0063] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0064] Although the present invention is disclosed as above, the scope of protection of the present invention is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will all fall within the scope of protection of the present invention.

Claims

1. A vehicle rear protection device, characterized in that, It includes a mounting base (1), a rear protection main body (2) and a locking mechanism (3). One end of the rear protection main body (2) is hinged to the mounting base (1). The mounting base (1) is provided with a plurality of locking and cooperating parts (112) arranged in an arc shape, and the center of the circle where the plurality of locking and cooperating parts (112) are located is on the axis of the rotation track of the other end of the rear protection main body (2). The locking mechanism (3) includes a locking main body, an elastic member (32) and a locking part (33) provided on the locking main body. The locking main body is arranged on the rear protection main body (2). The elastic member (32) is used to drive the locking part (33) to move so that at least part of the locking part (33) is inserted into the corresponding locking and cooperating part (112). The rear protection main body (2) includes a protection bar (21) and a connecting plate (22). One end of the connecting plate (22) is hinged to the mounting base (1), and the other end of the connecting plate (22) is connected to the protection bar (21). The locking main body is arranged on the connecting plate (22). Two of the connecting plates (22) are set as a group of connecting plates (22). The mounting base (1) includes two mounting plates (11) arranged at intervals. A group of connecting plates (22) is placed between the two mounting plates (11), and a group of connecting plates (22) are respectively hinged to the two mounting plates (11). Two symmetrically arranged locking parts (33) are provided on the locking main body. The elastic member (32) is located between the two locking parts (33). The elastic member (32) is used to drive the two locking parts (33) on both sides to move away from each other so that at least part of the two locking parts (33) on both sides are respectively inserted into the corresponding locking and cooperating parts (112) on the two mounting plates (11) on both sides. The locking main body includes a cylinder body (31). The two locking parts are respectively slidably connected to the cylinder body (31). First limiting steps are respectively arranged at both ends of the inner wall of the cylinder body (31). A second limiting step is arranged at one end of the two locking parts close to each other. The second limiting step and the elastic member (32) are respectively located between the two first limiting steps.

2. The vehicle rear protection device according to claim 1, characterized in that, The locking and cooperating part (112) is a locking hole, and the locking part (33) is a locking pin. The inner wall of the locking hole is set as a conical guiding surface (1121), or / and, the end of the locking pin away from the elastic member (32) is set as a spherical surface (331).

3. The vehicle rear protection device according to claim 1, characterized in that, The locking main body is arranged between a group of connecting plates (22), and through holes (222) for the locking parts (33) to pass through are arranged on the connecting plates (22).

4. The vehicle rear protection device according to claim 1, characterized in that, The cylinder body (31) includes two half-cylinder bodies (311), and the two half-cylinder bodies (311) are used for splicing into the cylinder body (31).

5. The vehicle rear protection device according to claim 4, characterized in that, Outward flanges (3111) are respectively arranged at the splicing ends of the two half-cylinder bodies (311), and the two outward flanges (3111) are used for connection by fasteners.

6. The vehicle rear protection device according to claim 1, characterized in that, A plurality of groups of the connecting plates (22) are arranged along the length direction of the protective bar (21), and one of the mounting seats (1) is provided at one end of each group of the connecting plates (22) away from the protective bar (21).

7. A vehicle, characterized in that, It includes a rear vehicle frame (4) and the vehicle rear protection device according to any one of claims 1-6, and the mounting seat (1) of the vehicle rear protection device is mounted at the rear vehicle frame (4).

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