Lightweight cantilever type automobile tailboard lifting arm

Abstract

The utility model discloses a lightweight cantilever type automobile tailboard lifting arm, and relates to the field of automobile tailboards. The device comprises two vertical arms, a connecting pipe is connected between the two vertical arms, a limiting ring is connected outside the connecting pipe, a fixing piece is arranged on one side of the limiting ring, a gasket is sleeved on the outer surface of the fixing piece, and a protective box is connected on one side of the outer surface of the fixing piece. The fixing piece, the fixing groove and the protection box are arranged, the fixing piece is limited through the fixing groove, rotation of the connecting pipe is avoided, threads on the protection box are meshed with threads on the fixing piece by rotating the protection box, meanwhile, the fastening nut is driven to be meshed with threads at one end of the connecting pipe, and the loosening possibility of the fastening nut is reduced; and meanwhile, the connecting position of the fastening nut and the connecting pipe is sealed through the protection box, and the situation that the connecting position of the fastening nut and the connecting pipe is in contact with rainwater, and consequently rust is caused is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile tailgate, concretely to a lightweight cantilever type automobile tailgate lifting arm. BACKGROUND

[0002] The lifting arm structure of the conventional cantilever type tailgate is mostly formed by cutting and machining steel and then assembling and welding, and the structure mainly comprises left and right vertical arms and a connecting pipe, and there are mainly three vertical arm structures, namely, thick steel plate integral cutting type, tailor-welded type and stamping forming welded type, the thick steel plate integral type vertical arm structure lifting arm is formed by using thick steel plate plasma cutting, machining and then welding with an ear plate and a connecting pipe, and the tailor-welded type vertical arm structure lifting arm is formed by welding a processed rectangular pipe, a thin steel plate and a shaft sleeve, and then connected into a whole by a connecting pipe.

[0003] After searching, a kind of hydraulic tailgate lifting arm structure of cargo vehicle of application No. 202223281231.3 is found, when vertical arm body and cross rib need to be repaired and replaced, the device can be removed by rotating the fixed nut on both sides of cross rib, after replacement, by aligning and inserting the vertical arm head upper limit slot into the threaded joint upper protruding block, and the fixed nut is tightened, so that the easy-to-disassemble and lifting functions are realized, but the lifting arm is in outdoor environment for a long time, the threads on threaded joint and fixed nut are prone to rust, in rusted and rusted state, it is difficult to disassemble fixed nut, and threaded joint and fixed nut lack rust-proof treatment. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims to provide a lightweight cantilever type automobile tailgate lifting arm to solve the technical problems in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a lightweight cantilever type automobile tailgate lifting arm, comprising a vertical arm, the vertical arm is provided with two, two vertical arms are connected with a connecting pipe, the connecting pipe is externally connected with a limiting ring, one side of the limiting ring is provided with a fixed sheet, the outer surface of the fixed sheet is sleeved with a gasket, one side of the outer surface of the fixed sheet is connected with a protective box, the protective box is internally connected with a fastening nut through a connecting plate, one side of the protective box is provided with an oil supply pipe.

[0006] Further, the vertical arm is provided with a fixed slot and a connecting hole on both sides.

[0007] By adopting the technical scheme, when installing, the gasket is sleeved on the connecting pipe close to one side of the limiting ring, and after being placed, the fixing sheet is aligned with the fixing groove, one end of the connecting pipe is inserted into the connecting hole, another gasket is sleeved on the fixing sheet close to one side of the vertical arm, finally the protective box is aligned with the fixing sheet, the protective box is rotated to tighten the fastening nut, so that the connecting pipe is fixed, and the connecting part of the fastening nut and the connecting pipe is sealed, rusting of the connecting part of the fastening nut and the connecting pipe is avoided, and the connecting pipe is difficult to disassemble, thereby facilitating later maintenance.

[0008] Further, the connecting pipe is detachably connected with the connecting hole, and threads are arranged at two ends of the connecting pipe.

[0009] By adopting the technical scheme, the outer diameter of the non-threaded part of the connecting pipe is equal to the inner diameter of the connecting hole, and the outer diameter of the threaded part at two ends of the connecting pipe is smaller than that of the non-threaded part, so that the connecting pipe is convenient to install and disassemble, the threads at two ends of the connecting pipe are the same as those of the fastening nut, and the connecting pipe is combined with the two vertical arms into an integral whole through the threads and the fastening nut.

[0010] Further, the fixing sheet and the fixing groove are each provided with twelve, which are arranged in two groups with six in each group, and the fixing sheets and the fixing grooves in each group are arranged in a circular array.

[0011] By adopting the technical scheme, the fixing sheet is limited by the fixing groove, so that the connecting pipe is prevented from rotating, and the tail plate is further prevented from falling to threaten goods and personnel, and the safety of the device is greatly improved.

[0012] Further, threads are arranged on one side of the outer surface of the fixing sheet and the inner wall of the protective box, and the fixing sheet is threadedly connected with the protective box.

[0013] By adopting the technical scheme, the threads on the outer surface of the fixing sheet are the same as those on the inner wall of the protective box, and the fixing sheet is connected with the protective box, so that the possibility of loosening of the fastening nut is reduced, the fastening degree between the vertical arm and the connecting pipe is further enhanced, and the connecting part of the fastening nut and the connecting pipe is sealed by the protective box, so that the connecting part is prevented from being in contact with rainwater to cause rusting.

[0014] Further, the oil delivery pipe is provided with a sealing cover at one end.

[0015] By adopting the technical scheme, after the protective box is tightened, the antirust oil is extracted by using a syringe, and is injected into the protective box through the oil delivery pipe, so that the antirust oil fills the protective box, the threads on the connecting pipe, the threads on the inner wall of the protective box, the threads at one end of the connecting pipe and the threads on the fastening nut are infiltrated to block air, the antirust performance is further improved, and after being filled, the oil delivery pipe is sealed by the sealing cover to prevent dust from entering.

[0016] Further, the number of the gaskets is four, two in each group, and the two gaskets in each group are located on two sides of the vertical arm.

[0017] By adopting the above technical scheme, the gasket is made of rubber, the friction between the protective box and the limiting ring and the vertical arm is reduced through the gasket, thereby reducing the abrasion, and the sealing property of the protective box is improved, and the leakage of rust-proof oil is avoided.

[0018] Further, the protective box is provided with a hexagonal torsion block on one side.

[0019] By adopting the above technical scheme, when the protective box needs to be disassembled, the hexagonal torsion block is sleeved with the impact socket, and the hexagonal torsion block is twisted by using the air gun, so that the protective box and the fastening nut are loosened, and the disassembly is more quick and labor-saving.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] 1. The utility model discloses a fixing piece, a fixed groove and a protective box are arranged, during installation, the fixing piece is limited through the fixed groove, the self-rotation of the connecting pipe is avoided, the threat of the tail plate sliding to goods and personnel is further avoided, the safety of the device is greatly improved, the thread on the protective box is engaged with the thread on the fixing piece through the rotation of the protective box, the thread engagement between the fastening nut and one end of the connecting pipe is driven, the possibility of the fastening nut loosening is reduced, the fastening degree between the vertical arm and the connecting pipe is further enhanced, and the connecting portion of the fastening nut and the connecting pipe is sealed through the protective box, so that rust is avoided due to the contact of the connecting portion of the fastening nut and the connecting pipe with rainwater.

[0022] 2. The utility model discloses an oil pipe, a sealing ring and a sealing cover, after the protective box is tightened, the rust-proof oil is extracted through the syringe, is injected into the protective box through the oil pipe, so that the protective box is filled with the rust-proof oil, after being filled, the oil pipe is sealed through the sealing cover, dust is prevented from entering, the rust-proof oil is immersed and air is blocked on the thread on the connecting pipe, the thread in the protective box, the thread on one end of the connecting pipe and the thread on the fastening nut, and the rust-proof performance is further improved. DRAWINGS

[0023] Figure 1 It is a structural schematic view of the utility model;

[0024] Figure 2 It is a structural schematic view of the connecting rod and the fixed groove of the utility model;

[0025] Figure 3 It is a structural schematic view when the connecting pipe of the utility model is inserted into the connecting hole;

[0026] Figure 4 It is a sectional structure schematic view of the protective box of the utility model.

[0027] In the diagram: 1. Vertical arm; 2. Fixing groove; 3. Connecting hole; 4. Connecting pipe; 5. Limiting ring; 6. Fixing plate; 7. Gasket; 8. Protective box; 9. Connecting plate; 10. Fastening nut; 11. Oil pipe; 12. Sealing cap; 13. Hexagonal toggle block. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] The embodiments of this utility model will be described below based on its overall structure.

[0030] Example 1: A lightweight cantilevered car tailgate lifting arm, such as Figures 1-4 As shown, the device includes two vertical arms 1, connected by a connecting pipe 4. A limit ring 5 is connected to the outside of the connecting pipe 4. A fixing plate 6 is located on one side of the limit ring 5, and a gasket 7 is fitted onto the outer surface of the fixing plate 6. A protective box 8 is connected to one side of the outer surface of the fixing plate 6. A fastening nut 10 is connected inside the protective box 8 via a connecting plate 9. An oil supply pipe 11 is located on one side of the protective box 8. Fixing grooves 2 and connecting holes 3 are provided on both sides of the vertical arms 1. During installation, the gasket 7 is first fitted onto the connecting pipe 4, tightly against one side of the limit ring 5. After placement, the fixing plate 6 is aligned with the fixing groove 2, and one end of the connecting pipe 4 is inserted into the connecting hole 3. Then, the other gasket 7 is fitted onto the fixing plate 6, tightly against one side of the vertical arm 1. Finally, the protective box 8 is aligned with the fixing plate 6, and the protective box 8 is rotated to tighten the fastening nut 10, thereby fixing the connecting pipe 4 and sealing the connection between the fastening nut 10 and the connecting pipe 4. This prevents rusting and makes disassembly difficult, facilitating future maintenance.

[0031] See Figure 2 and Figure 3 In the above embodiment, the connecting pipe 4 is detachably connected to the connecting hole 3, and the two ends of the connecting pipe 4 are threaded. The outer diameter of the unthreaded part of the connecting pipe 4 is equal to the inner diameter of the connecting hole 3, and the outer diameter of the threaded part at both ends is smaller than the outer diameter of the unthreaded part, which facilitates the installation and disassembly of the connecting pipe 4. The threads at both ends of the connecting pipe 4 are the same as the threads of the fastening nut 10. The two vertical arms 1 and the connecting pipe 4 are connected to the fastening nut 10 through the threads, thereby combining the two vertical arms 1 and the connecting pipe 4 into a whole.

[0032] See Figure 2 and Figure 3In the above embodiment, the fixing piece 6 and the fixing groove 2 are each provided with twelve, two groups of six, and the fixing piece 6 and the fixing groove 2 are arranged in a ring array, the fixing piece 6 is limited by the fixing groove 2, the self-rotation of the connecting pipe 4 is avoided, the threat of the tail plate falling to the goods and personnel is further avoided, and the safety of the device is greatly improved.

[0033] Referring to Figure 2 Figure 3 and Figure 4 In the above embodiment, the outer surface of the fixing piece 6 and the inner wall of the protective box 8 are provided with threads, and the fixing piece 6 and the protective box 8 are threadedly connected. The threads on the outer surface of the fixing piece 6 and the threads on the inner wall of the protective box 8 are the same, and the two are connected, which can reduce the possibility of loosening of the fastening nut 10, further enhance the firmness between the vertical arm 1 and the connecting pipe 4, and at the same time seal the connection between the fastening nut 10 and the connecting pipe 4 through the protective box 8, to avoid rust caused by contact between the connection between the fastening nut 10 and the connecting pipe 4 and rainwater.

[0034] Referring to Figure 1 , Figure 2 and Figure 4 In the above embodiment, one end of the oil delivery pipe 11 is provided with a sealing cover 12. After the protective box 8 is tightened, the protective box 8 is filled with rust-proof oil by using a syringe to extract the rust-proof oil and injecting it into the protective box 8 through the oil delivery pipe 11, so that the rust-proof oil fills the protective box 8, and the threads on the connecting pipe 4, the threads on the inner wall of the protective box 8, the threads on one end of the connecting pipe 4 and the threads on the fastening nut 10 are immersed to block air, further improving the rust-proof performance. After filling, the oil delivery pipe 11 is sealed by the sealing cover 12 to prevent dust from entering.

[0035] Referring to Figure 2 In the above embodiment, the number of gaskets 7 is four, two for each group, and each group of two gaskets 7 is located on both sides of the vertical arm 1. The gaskets 7 are made of rubber, which reduces the friction between the protective box 8 and the limiting ring 5 and the vertical arm 1, thereby reducing wear and tear, and at the same time increasing the sealing performance of the protective box 8 to avoid leakage of rust-proof oil.

[0036] Example two: In order to make the protective box more quickly and labor-saving when disassembled, example two is improved on the basis of example one, referring to Figure 1 , Figure 2 and Figure 4 One side of the protective box 8 is provided with a hexagonal torsion block 13. When the protective box 8 needs to be disassembled, the hexagonal torsion block 13 is covered by a batch head, and the hexagonal torsion block 13 is twisted by using a pneumatic wrench, so that the protective box 8 and the fastening nut 10 are loosened, making the disassembly more quickly and labor-saving.

[0037] The utility model discloses an implementation principle is: when assembling, the staff first holds up one end of connecting pipe 4, and the gasket 7 is sleeved into fixed sheet 6, so that the gasket 7 one side and the one side of limiting ring 5 are pasted, then fixed sheet 6 is aligned fixed groove 2, and fixed sheet 6 and connecting pipe 4 one end are inserted into fixed groove 2 and connecting hole 3 respectively, so that the gasket 7 other side and vertical arm 1 are pasted tightly, at this time, another gasket 7 is sleeved into fixed sheet 6, and the gasket 7 one side and vertical arm 1 other side are pasted, and then the thread on the protection box 8 is aligned the thread on fixed sheet 6, and protection box 8 is rotated, and is engaged, and simultaneously under the drive of protection box 8, connecting plate 9 drives fastening nut 10 and the thread engagement of connecting pipe 4 one end connection, and connecting pipe 4 and vertical arm 1 are fixed, and protection box 8 seals fastening nut 10 and connecting pipe 4 connection, after sealing, through oil pipe 11, rust preventive oil is injected into protection box 8, and is filled, and the thread on connecting pipe 4, the thread in protection box 8 inner wall, the thread on the one end of connecting pipe 4 and fastening nut 10 are immersed and air is blocked, and rustproof performance is further improved, finally, using sealing cover 12, oil pipe 11 is sealed, and the above operation is repeated, and the installation of connecting pipe 4 other end is completed, until two vertical arm 1 and connecting pipe 4 are combined into an entirety.

[0038] Although the embodiments of the utility model have been shown and described, the specific embodiments are only the explanation of the utility model, and are not the limitation of the utility model, and the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable way, and the person skilled in the art can make the modification, replacement and change of the embodiment without the creative contribution after reading the specification without departing from the principles and the purpose of the utility model, but as long as in the claim range of the utility model, it is protected by the patent law.

Claims

1. A lightweight cantilevered tailgate lifting arm for a vehicle comprising a vertical arm (1) characterised in that: The vertical arm (1) is provided with two, two connecting pipes (4) are connected between the vertical arm (1), the connecting pipe (4) is externally connected with a limiting ring (5), one side of the limiting ring (5) is provided with a fixed sheet (6), the outer surface of the fixed sheet (6) is sleeved with a gasket (7), one side of the outer surface of the fixed sheet (6) is connected with a protective box (8), the protective box (8) is internally connected with a fastening nut (10) through a connecting plate (9), one side of the protective box (8) is provided with an oil pipe (11).

2. The lightweight cantilevered lift arm for a tailgate of a vehicle of claim 1, wherein: The vertical arm (1) is provided with a fixed groove (2) and a connecting hole (3) on both sides.

3. The lightweight cantilevered vehicle tailgate lift arm of claim 2, wherein: The connecting pipe (4) is detachably connected with the connecting hole (3), and the connecting pipe (4) is provided with threads at both ends.

4. The lightweight cantilevered vehicle tailgate lift arm of claim 2, wherein: The fixed sheet (6) and the fixed groove (2) are each provided with twelve, six for a group, a total of two groups, and each group of fixed sheets (6) and fixed grooves (2) are arranged in an annular array.

5. The lightweight cantilevered vehicle tailgate lift arm of claim 1, wherein: The outer surface of the fixed sheet (6) is provided with threads on one side, and the fixed sheet (6) is threadedly connected with the protective box (8).

6. The lightweight cantilevered vehicle tailgate lift arm of claim 1, wherein: One end of the oil pipe (11) is provided with a sealing cover (12).

7. The lightweight cantilevered vehicle tailgate lift arm of claim 1, wherein: The number of gaskets (7) is four, two for a group, a total of two groups, and each group of two gaskets (7) is located on both sides of the vertical arm (1).

8. The lightweight cantilevered vehicle tailgate lift arm of claim 1, wherein: One side of the protective box (8) is provided with a hexagonal torsion block (13).

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