Automobile back door supporting rod

Abstract

The utility model provides an automobile back door supporting rod which comprises a cylinder body, a stroke rod, a protection structure of the stroke rod, connecting seats and connecting pieces, the stroke rod and the protection structure of the stroke rod are installed on the cylinder body, the connecting seats are fixedly installed on the cylinder body, the stroke rod and the protection structure of the stroke rod, and the connecting pieces are movably installed on the two connecting seats. A sealing protection structure is creatively introduced, the design ensures that the stroke rod is still comprehensively protected after being unfolded and is not directly exposed to the external environment, the sealing performance of the stroke rod is remarkably improved through the protection structure, the problems of oil leakage, gas leakage and the like are effectively prevented, external collision can be resisted, and the service life of the stroke rod is prolonged. And the flatness of the sealing surface is prevented from being damaged due to external force impact, so that the stability and the reliability of the back door supporting rod are ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of automotive support rods, and particularly relates to an automotive back door support rod. Background Art

[0002] With the continuous development of automotive technology and consumers' pursuit of the convenience and safety of automotive use, as an important part of the automotive back door system, the performance and reliability of automotive back door support rods have been increasingly emphasized. An automotive back door support rod, also known as a gas spring or a gas strut, is a device that uses gas to generate elastic force for support and connection. Its main function is to provide stable control force when the back door is opened, forced, limited, etc., to ensure the smooth and safe opening and closing of the back door.

[0003] A traditional automotive back door support rod consists of four parts: a piston and a stroke rod, a cylinder block, a working medium (gas), and a joint. The magnitude of its elastic force can be set by adjusting the air pressure or changing the diameter of the piston rod to meet the requirements of different vehicle models and back door weights.

[0004] However, due to the relatively small overall diameter of the stroke rod of the automotive back door support rod and its exposure to the external environment after deployment, this design makes the stroke rod extremely vulnerable to damage when encountering accidental external bumps. Once a depression appears on the surface of the stroke rod, it will not only greatly weaken the connection sealing performance between it and the cylinder block, but more importantly, this depression will damage the flatness of the sealing surface, resulting in poor sealing. Such seal failure may cause serious consequences, such as oil leakage, air leakage, etc., which not only affect the normal operation of the back door support rod, but also pose a potential threat to the safety and performance of the vehicle.

[0005] Therefore, it is very necessary to invent an automotive back door support rod. Content of the Utility Model

[0006] To solve the above technical problems, the utility model provides an automotive back door support rod, which includes a cylinder block, a stroke rod and its protection structure, a connection seat and a connecting piece. The cylinder block is installed with the stroke rod and its protection structure, and the connection seats are fixedly installed on both the cylinder block and the stroke rod and its protection structure. The connecting piece is movably installed on the two connection seats;

[0007] The stroke rod and its protection structure include a mounting plate, a stroke rod, a sealing cover, a telescopic spring and a reinforcing piece. There are two mounting plates in total. The two mounting plates are respectively fixedly connected to the cylinder block or the stroke rod, and the stroke rod is connected to the cylinder block; one of the mounting plates is fixedly installed with the connection seat, and the two mounting plates are connected by the sealing cover and the telescopic spring; the reinforcing piece is fixedly installed on the inner surface of the sealing cover.

[0008] Preferably, an active ball cavity allowing the ball head of the connecting member to be movably installed is provided on the connecting seat, and the connecting member is composed of a ball head, a screw rod, and a screw head.

[0009] Preferably, the stroke rod penetrates through one of the mounting plates in a sealed manner. This mounting plate is fixedly installed on the cylinder block, and the other mounting plate is fixedly connected to the stroke rod.

[0010] Preferably, the sealing cover is located outside the telescopic spring and the reinforcing piece. The telescopic spring is located outside the reinforcing piece, and the telescopic spring is located outside the stroke rod.

[0011] Preferably, the sealing cover is a rubber corrugated cover. Several of the reinforcing pieces fixedly installed on the inner side of the sealing cover are circular thin plate structures, and the reinforcing pieces do not affect the telescopic movement of the sealing cover and the telescopic spring.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] On the basis of inheriting the functions of traditional rear door support rods, the present utility model creatively introduces a sealing protection structure. This novel design ensures that the stroke rod is still fully protected after being deployed and is not directly exposed to the external environment. Through elaborate structural design, this protection structure not only significantly improves the sealing performance of the stroke rod, effectively preventing problems such as oil leakage and air leakage, but also can resist external bumps, avoiding damage to the flatness of the sealing surface caused by external force impact, thereby ensuring the stability and reliability of the rear door support rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the overall structural schematic diagram of the present utility model.

[0015] Figure 2 is the partial sectional structural schematic diagram of the stroke rod and its protection structure of the present utility model.

[0016] Figure 3 is the present utility model Figure 2 partial enlarged structural schematic diagram at position A.

[0017] In the figure:

[0018] Cylinder block 1, stroke rod and its protection structure 2, mounting plate 21, stroke rod 22, sealing cover 23, telescopic spring 24, reinforcing piece 25, connecting seat 3, connecting member 4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] To enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the embodiments, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] As shown in the attached Figure 1 to the attached Figure 3 figures:

[0022] The vehicle back door support rod provided by the present utility model includes a cylinder body 1, a stroke rod and its protection structure 2, a connection seat 3 and a connecting piece 4. The stroke rod and its protection structure 2 are installed on the cylinder body 1, and the connection seats 3 are fixedly installed on both the cylinder body 1 and the stroke rod and its protection structure 2. The connecting piece 4 is movably installed on the two connection seats 3.

[0023] The stroke rod and its protection structure 2 include a mounting plate 21, a stroke rod 22, a sealing cover 23, a telescopic spring 24, and a reinforcing piece 25. There are two mounting plates 21 in total. The two mounting plates 21 are respectively fixedly connected to the cylinder block 1 or the stroke rod 22, and the stroke rod 22 is connected to the cylinder block 1. A connecting seat 3 is fixedly installed on one of the mounting plates 21, and the two mounting plates 21 are connected by the sealing cover 23 and the telescopic spring 24. The reinforcing piece 25 is fixedly installed on the inner surface of the sealing cover 23. The design of the stroke rod and its protection structure 2 ensures that the stroke rod is still fully protected after deployment, not directly exposed to the external environment, can resist external bumps, and avoids damage to the flatness of the sealing surface caused by external force impact, thus ensuring the stability and reliability of the rear door support rod.

[0024] Embodiment 1:

[0025] Specifically, the connecting seat 3 is provided with a movable ball cavity that allows the ball head of the connecting member 4 to be movably installed. The connecting member 4 is composed of a ball head, a screw rod, and a screw head. The connecting seat 3 and the connecting member 4 are the joint structures of the support rod. The ball head part is matched with the movable ball cavity, and through the free rotation of the ball head in the movable ball cavity, the multi-angle flexible connection between the connecting member 4 and the connecting seat 3 is realized. This design not only improves the flexibility of the connection but also enhances the stability of the connection. The screw rod part is used to connect other components or structures, and the screw head provides a convenient tightening or loosening operation for installation or disassembly. The combination of the entire connecting member 4 and the connecting seat 3 ensures both the reliability of the connection and the adaptability and flexibility of the system.

[0026] Specifically, the stroke rod 22 is sealed through one of the mounting plates 21, realizing a sealed installation. This mounting plate 21 is firmly fixed on the cylinder block 1, ensuring the tight connection between the cylinder block 1 and the mounting plate 21. The other mounting plate 21 is tightly and fixedly connected to the stroke rod 22. This connection method not only ensures the stability and reliability of the stroke rod 22 but also enhances the sealing performance of the entire support rod. Through this design, the stroke rod 22 can smoothly expand and contract in the cylinder block 1 while avoiding gas or liquid leakage, ensuring the normal operation and safety of the rear door support rod.

[0027] Specifically, the outermost layer is the sealing cover 23, which is located outside the telescopic spring 24 and the reinforcing piece 25. Its main function is to isolate the external environment from the internal components, prevent impurities such as dust and moisture from invading, and ensure the normal operation of the internal components. Immediately following, inside the sealing cover 23, the telescopic spring 24 is ingeniously placed outside the reinforcing piece 25. The telescopic spring 24, as the main elastic element of the support rod, is responsible for providing the necessary elastic force and buffering to ensure the smoothness and fluency of the rear door during the opening and closing processes. The reinforcing piece 25, on the other hand, serves as a component to support and fix the telescopic spring 24, further enhancing the durability and reliability of the support rod by strengthening the rigidity and stability of the structure.

[0028] Specifically, the sealing cover 23 is a rubber corrugated cover. The corrugated structure has good elasticity and stretchability, which can effectively protect the internal telescopic spring 24 and the stroke rod 22, while preventing impurities such as dust and moisture from invading. Several of the reinforcing pieces 25 fixedly installed on the inner side of the sealing cover 23 are of circular thin sheet structure. The reinforcing pieces 25 can not only provide the necessary support to ensure the stable shape of the sealing cover 23, but also do not affect the telescopic movement of the sealing cover 23 and the telescopic spring 24.

[0029] Embodiment Two:

[0030] When the rear door needs to be opened, the stroke rod 22 extends outwards under the action of the telescopic spring 24, pushing the rear door upwards. At this time, the sealing cover 23, as an external protection structure, tightly wraps around the outside of the telescopic spring 24 and the stroke rod 22, effectively isolating impurities such as dust and moisture in the external environment, and ensuring the cleanliness and normal operation of the internal components. At the same time, the reinforcing piece 25 is fixed on the inner side of the sealing cover 23, providing the necessary support to ensure the stable shape of the sealing cover 23 and not interfering with the telescopic movement of the telescopic spring 24 and the stroke rod 22.

[0031] During the extension process of the stroke rod 22, the two mounting plates 21 are respectively fixed on the cylinder block 1 and the stroke rod 22 to ensure the stability and reliability of the stroke rod 22. At the same time, the connecting seat 3 is matched with the ball head part of the connecting piece 4 through the movable ball cavity to achieve the multi-angle flexible connection of the support rod with other components or structures. The screw part of the connecting piece 4 is used to connect other components, and the screw head part provides a convenient tightening or loosening operation for installation or disassembly.

[0032] When the rear door needs to be closed, the telescopic spring 24 is compressed, driving the stroke rod 22 to retract inwards. At this time, the sealing cover 23 and the reinforcing piece 25 continue to provide protection and support to ensure the stability and sealing performance of the support rod during the closing process.

[0033] During the whole working process, through the design of the sealing cover 23 and the reinforcing piece 25, the utility model effectively protects the telescopic spring 24 and the stroke rod 22, preventing erosion and damage from the external environment. At the same time, the combination of the connecting seat 3 and the connecting piece 4 realizes the flexible connection of the support rod with other components, improving the adaptability and reliability of the system.

[0034] Any technical solution that uses the technical solution described in the utility model, or is designed by those skilled in the art inspired by the technical solution of the utility model to achieve the above technical effects, shall fall within the protection scope of the utility model.

Claims

1. Automobile back door support rod, characterized in that: The invention comprises a cylinder body (1), a stroke rod and a protective structure thereof (2), a connecting seat (3) and a connecting piece (4); the stroke rod and the protective structure thereof (2) are mounted on the cylinder body (1); the connecting seat (3) is fixedly mounted on the cylinder body (1) and the stroke rod and the protective structure thereof (2); and the connecting piece (4) is movably mounted on two connecting seats (3); The travel rod and its protective structure (2) comprise a mounting plate (21), a travel rod (22), a sealing cover (23), a telescopic spring (24) and a reinforcing sheet (25). Two mounting plates (21) are provided in total. The two mounting plates (21) are respectively fixedly connected to the cylinder body (1) or the travel rod (22), and the travel rod (22) is connected to the cylinder body (1). The connecting seat (3) is fixedly mounted on one of the mounting plates (21). The two mounting plates (21) are connected to the telescopic spring (24) via the sealing cover (23). The reinforcing sheet (25) is fixedly mounted on the inner surface of the sealing cover (23).

2. The automobile back door support rod according to claim 1, characterized in that: The connecting seat (3) is provided with a movable ball cavity which allows the ball head of the connecting member (4) to be movably installed. The connecting member (4) is composed of a ball head, a screw rod and a screw head.

3. The automobile back door support rod according to claim 1, characterized in that: The travel rod (22) seals and passes through one of the mounting plates (21), which is fixedly mounted on the cylinder body (1), while the other mounting plate (21) is fixedly connected to the travel rod (22).

4. The automobile back door support rod according to claim 1, characterized in that: The sealing cover (23) is located outside the telescopic spring (24) and the reinforcing sheet (25), the telescopic spring (24) is located outside the reinforcing sheet (25), and the telescopic spring (24) is located outside the travel rod (22).

5. The automobile back door support rod according to claim 1, characterized in that: The sealing cover (23) is a rubber corrugated cover, and the plurality of reinforcing sheets (25) fixedly installed inside the sealing cover (23) are circular thin sheet structures. The reinforcing sheets (25) do not affect the telescopic movement of the sealing cover (23) and the telescopic spring (24).

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