Supporting rod for automobile back door

Abstract

The utility model relates to the technical field of supporting rods, in particular to a supporting rod for an automobile back door. The supporting rod for the automobile back door comprises an inner sleeve, an outer sleeve, a first ball socket and a second ball socket, one end of the inner sleeve is connected into the outer sleeve to form a connecting pipe, a guide rod and a guide pipe are arranged in the connecting pipe, the guide rod and the guide pipe are connected through a guide assembly and a piston assembly, the guide rod and the guide pipe are sleeved with springs, and the first ball socket is connected with the guide rod through threads. The second ball socket is connected with the guide pipe through the circumferential rolling groove, the first ball socket and the second ball socket fix the spring outside the guide pipe in the axial direction, and the outer diameter of the guide pipe provides the axial guide function for the spring. Compared with a traditional supporting rod for a tail door, the supporting rod for the automobile back door has the advantages that the influence of temperature on an internal gas spring can be avoided; the influence of the temperature change on the force value can be avoided, and meanwhile, the guide function of the gas spring can be realized and the cost can be obviously reduced through the internal structural design.

Description

Technical Field

[0001] The utility model relates to a support rod, in particular to a support rod for an automobile rear door. Background Art

[0002] When a gas spring product is used for opening and closing an automobile tailgate, the pressure of the high-pressure gas inside the gas spring will change with the temperature, and the force value of the gas spring will also change accordingly, which will affect the comfort of operating the automobile rear door; the force value of a metal spring has the characteristic of not being affected by temperature changes, but a single metal spring requires a guide rod and a guide sleeve to provide an axial extension force value. If a gas spring is used inside as a guiding and supporting component, not only will the extension force of the product be affected by temperature, but also the cost and manufacturing difficulty of the gas strut are relatively high, and the gas leakage risk and long-term slow air leakage problem of the gas strut need to be considered. In the application process of an automobile tailgate, it will not only increase the cost, but also bring the influence and risk of gas leakage of the gas strut. Summary of the Utility Model

[0003] The utility model aims to solve the above defects and provides a support rod for an automobile rear door.

[0004] To overcome the defects in the background art, the technical solution adopted by the utility model to solve its technical problems is: this support rod for an automobile rear door includes an inner sleeve, an outer sleeve, a ball socket one and a ball socket two. One end of the inner sleeve is connected inside the outer sleeve to form a connecting pipe. A guide rod and a guide pipe are arranged inside the connecting pipe. The guide rod and the guide pipe are connected through a guiding component and a piston component. A spring is sleeved on the guide rod and the guide pipe. The ball socket one is connected to the guide rod through a thread, and the ball socket two is connected to the guide pipe through a circumferential rolling groove. The ball socket one and the ball socket two axially fix the spring outside the guide pipe, and the outer diameter of the guide pipe provides an axial guiding function for the spring.

[0005] According to another embodiment of the utility model, further includes that the outside of the spring is covered by the inner sleeve and the outer sleeve.

[0006] According to another embodiment of the utility model, further includes that the guiding component is fixed at one end of the guide pipe through a circumferential rolling groove and a sealing structure. The guiding component includes a guide sleeve, an oil storage seal, grease one and an iron ring. The inner diameter A of the right end of the oil storage seal is in interference fit with the guide rod. The left end of the oil storage seal is attached to the guide sleeve to form a sealed chamber structure. The grease one is located inside the oil storage seal to provide lubrication for the guide rod. The right end of the oil storage seal is attached to the circumferential rolling groove.

[0007] According to another embodiment of the utility model, further includes that the piston component is connected to the guide rod through riveting to form an integral body. The piston component includes a piston and a metal gasket. An empty groove clamped by the piston and the metal gasket contains grease two.

[0008] According to another embodiment of the present utility model, it further includes that the internal structure of the piston is a five-star structure, and the piston, the gasket and the inner wall of the guide tube form 5 small chambers, and the grease II is placed in the small chambers.

[0009] The beneficial effects of the present utility model are as follows: Compared with the traditional support rod for the tailgate of an automobile, this support rod for the back door of an automobile can avoid the influence of temperature on the internal gas spring; it can avoid the influence of the force value by temperature change, and at the same time, its internal structure design can not only realize the guiding function of the gas spring but also significantly reduce the cost. While ensuring the actual application of the automobile tailgate, it can improve the price competitiveness of the product. Description of the Drawings

[0010] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0011] Figure 1 is the structural schematic diagram of the present utility model;

[0012] Figure 2 is the structural schematic diagram of the cross-sectional view of the present utility model;

[0013] Figure 3 is the structural schematic diagram of the connection mode between the ball socket II and the guide tube;

[0014] Figure 4 is the structural schematic diagram of the ball socket II;

[0015] Figure 5 is the structural schematic diagram of the guide assembly;

[0016] Figure 6 is the structural schematic diagram of the storage oil seal;

[0017] Figure 7 is the structural schematic diagram of the piston assembly;

[0018] Figure 8 is the structural schematic diagram of the piston;

[0019] Among them: 1. Ball socket I; 2. Inner sleeve; 3. Outer sleeve; 4. Ball socket II; 5. Spring; 6. Guide rod; 7. Guide assembly; 8. Piston assembly; 9. Guide tube; 7-1. Guide sleeve; 7-2. Storage oil seal; 7-3. Grease I; 8-1. Piston; 8-2. Grease II; 8-3. Metal gasket. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the present utility model fall within the scope of protection of the present utility model.

[0021] As Figure 1-2 shown, the figure includes an inner sleeve 2, an outer sleeve 3, a ball socket one 1, and a ball socket two 4. One end of the inner sleeve 2 is connected inside the outer sleeve 3 to form a connecting pipe. A guide rod 6 and a guide pipe 9 are arranged inside the connecting pipe. The guide rod 6 and the guide pipe 9 are connected through a guide assembly 7 and a piston assembly 8. A spring 5 is sleeved on the guide rod 6 and the guide pipe 9. The ball socket one 1 is connected to the guide rod 6 by a thread, and the ball socket two 4 is connected to the guide pipe 9 through a circumferential groove. The ball socket one 1 and the ball socket two 4 axially fix the spring 5 outside the guide pipe 9, and the outer diameter of the guide pipe 9 provides an axial guiding effect for the spring 5. The structure of the ball socket two 4 is as Figure 4 shown, Figure 3 is a schematic diagram of the connection between the ball socket two 4 and the guide pipe 9 through a circumferential groove.

[0022] The outside of the spring 5 is covered by the inner sleeve 2 and the outer sleeve 3. The inner diameter dimension of the inner sleeve 2 provides an axial guiding effect for the spring 5 to prevent the spring from being distorted. The outer sleeve covers the remaining spring length to provide a protective effect during the compression process of the spring.

[0023] As Figure 5 , 6 shown, the guide assembly 7 is fixed to one end of the guide pipe 9 through a circumferential groove and a sealing structure. The guide assembly 7 includes a guide sleeve 7-1, an oil storage seal 7-2, and a grease one 7-3. The inner diameter A of the right end of the oil storage seal 7-2 is in interference fit with the guide rod 6. The left end of the oil storage seal 7-2 is in contact with the guide sleeve 7-1 to form a sealed chamber structure. The grease one 7-3 is located inside the oil storage seal 7-2 to provide lubrication for the guide rod 6. The right end of the oil storage seal 7-2 is in contact with the circumferential groove.

[0024] As Figure 7 , 8 shown, the piston assembly 8 is connected to the guide rod 6 by riveting to form a whole. The piston assembly 8 includes a piston 8-1 and a metal gasket 8-3. The empty groove clamped by the piston 8-1 and the metal gasket 8-3 contains a grease two 8-2.

[0025] As Figure 8As shown, the internal structure of the piston 8-1 is a five-star structure. The piston 8-1, the gasket 8-3 and the inner wall of the guide tube 9 form five small chambers, and the grease II 8-2 is placed in the small chambers. The internal structure of the piston 8-1 is a five-star structure, which forms five small chambers with the gasket 8-3 and the inner wall of the guide tube 9. Grease is filled inside to provide lubrication for the reciprocating movement of the piston. Thus, the metal spring provides a stable axial support force, without noise or abnormal sound, and is not affected by temperature changes. Embodiment

[0026] First, the piston assembly 8 integrally combines the piston 8-1 and the metal gasket 8-3 with the guide rod 6 by riveting, preventing the separation of the guide rod and the guide tube during the extension of the support rod and providing a certain tensile strength. The outer diameter of the piston 8-1 has an interference fit with the inner diameter of the guide tube 9, and together with the guide sleeve 7-1, provides guidance for the guide rod 6;

[0027] Second, the guide rod 6 inside is connected to the guide tube 9 through the guide assembly 7 and the piston assembly 8. The guide assembly 7 includes a guide sleeve 7-1, an oil storage seal 7-2 and grease I 7-3. The guide assembly 7 is fixed at one end of the guide tube through a circumferential rolling groove and a sealing structure to provide a guiding function; the inner diameter A of the right end of the oil storage seal 7-2 has an interference fit with the guide rod 6, and the left end is attached to the guide sleeve 7-1 to form a sealed chamber, which is filled with grease I 7-3 to lubricate the guide rod;

[0028] Second, a spring 5 is sleeved on the guide rod 6 and the guide tube 9. The outer diameter of the guide tube provides an axial guiding effect for the spring 5 to prevent the spring from being distorted;

[0029] Second, the outside of the spring 5 is covered by an inner sleeve 2 and an outer sleeve 3. The inner diameter of the inner sleeve 2 provides an axial guiding effect for the spring 5 to prevent the spring from being distorted, and the outer sleeve covers the remaining length of the spring to provide a protective effect during the compression of the spring.

[0030] Finally, the ball socket I 1 is connected to the guide rod 6 by threads, and the guide tube 9 is connected to the ball socket II 4 through a circumferential rolling groove. The two ball sockets axially fix the spring 5 outside the guide tube 9.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A support rod for a car back door, comprising an inner sleeve (2), an outer sleeve (3), a first ball socket (1) and a second ball socket (4), wherein one end of the inner sleeve (2) is connected to the outer sleeve (3) to form a connecting pipe, characterized in that: A guide rod (6) and a guide tube (9) are arranged in the connecting tube. The guide rod (6) and the guide tube (9) are connected via a guide assembly (7) and a piston assembly (8). A spring (5) is sleeved on the guide rod (6) and the guide tube (9). The first ball socket (1) is connected to the guide rod (6) via a thread, and the second ball socket (4) is connected to the guide tube (9) via a circumferential rolling groove. The first ball socket (1) and the second ball socket (4) axially fix the spring (5) outside the guide tube (9). The outer diameter of the guide tube (9) provides an axial guiding effect for the spring (5).

2. A support rod for a car back door as claimed in claim 1, characterized in that: The outside of the spring (5) is covered by an inner sleeve (2) and an outer sleeve (3).

3. The support rod for a car back door as claimed in claim 1, characterized in that: The guide assembly (7) is fixed to one end of the guide tube (9) via a circumferential rolling groove and a sealing structure. The guide assembly (7) comprises a guide sleeve (7-1), an oil storage seal (7-2) and a grease 1 (7-3). The hollow inner diameter A of the right end of the oil storage seal (7-2) is interference-fitted with the guide rod (6). The left end of the oil storage seal (7-2) is fitted with the guide sleeve (7-1) to form a closed chamber structure. The grease 1 (7-3) is located in the oil storage seal (7-2) to provide lubrication for the guide rod (6). The right end of the oil storage seal (7-2) is fitted with the circumferential rolling groove.

4. The support rod for a car back door as claimed in claim 1, characterized in that: The piston assembly (8) is connected to the guide rod (6) by riveting to form a whole. The piston assembly (8) comprises a piston (8-1) and a metal gasket (8-3). Grease 2 (8-2) is contained in the hollow groove clamped by the piston (8-1) and the metal gasket (8-3).

5. A support rod for a car back door as claimed in claim 4, characterized in that: The internal structure of the piston (8-1) is a five-star structure. The piston (8-1), the gasket (8-3) and the inner wall of the guide tube (9) form five small chambers, and the grease (8-2) is placed in the small chambers.

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