Automobile electric supporting rod device

Abstract

An automobile electric supporting rod device comprises a cylinder body, a front fixing mechanism, a transmission output mechanism, a driving motor system, a supporting rod telescopic adjusting mechanism, a rear fixing mechanism, a control mechanism and a power source access end, the driving motor system is connected with the transmission output mechanism, the front fixing mechanism is connected with the transmission output mechanism, and the control mechanism is electrically connected with the driving motor system. The power source access end is electrically connected with the control mechanism and the driving motor system, the supporting rod telescopic adjusting mechanism comprises a spiral spring and a lead screw transmission guide mechanism, the lead screw transmission guide mechanism comprises a lead screw and an ejector rod, the lead screw is arranged in the cylinder body through a guide rod, a guide cavity is formed in the guide rod, and the spiral spring is arranged on the guide rod in a sleeving mode; one end of the lead screw is connected with the transmission output mechanism through the coupling driven mechanism, the ejector rod is arranged at the other end of the lead screw, one end of the spiral spring abuts against the cylinder body, the other end of the spiral spring abuts against the guide rod, and the rear fixing mechanism is arranged at the other end of the ejector rod.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive electric strut device. Background Technology

[0002] In the automotive parts industry, struts are key components supporting body parts such as hoods and trunk lids. Traditional automotive struts are mainly divided into two categories: hydraulic and spring-loaded. Hydraulic struts rely on the damping effect of hydraulic oil to achieve support, but they have drawbacks such as easy aging and oil leakage of seals, significant changes in support force with temperature, and a short service life. Moreover, once a failure occurs, the repair cost is high. Spring-loaded struts provide support through the spring force; however, the spring force decreases with deformation, and the support stability drops significantly after long-term use. They also cannot be automatically controlled, requiring manual operation to open and close the hood or trunk lid, resulting in poor operational convenience. As the automotive industry rapidly develops towards intelligence and electrification, users' demands for the convenience and comfort of car use are constantly increasing, and the shortcomings of traditional struts are becoming increasingly prominent. For example, when opening a heavy hood, spring-loaded struts may become unstable due to insufficient spring force, posing a safety hazard; while the oil leakage problem of hydraulic struts will affect the cleanliness and reliability of the car. Meanwhile, the widespread adoption of automotive automated control systems necessitates that struts possess electrification, remote control, and automatic control capabilities to meet the intelligent interaction requirements of the entire vehicle. In summary, existing automotive struts are deficient in terms of automation, support stability, and service life, failing to meet the development needs of the modern automotive industry. Therefore, developing an electric, structurally stable, and highly controllable automotive strut device is of significant practical importance. Summary of the Invention

[0003] The purpose of this invention is to provide an electric automotive strut device to solve the problems of low automation and insufficient stability in existing automotive struts.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: an electric strut device for automobiles, characterized in that it includes a cylinder body, a front fixing mechanism, a transmission output mechanism, a drive motor system, a strut telescopic adjustment mechanism, a rear fixing mechanism, a control mechanism, and a power input terminal. The drive motor system is connected to the transmission output mechanism, the front fixing mechanism is connected to the transmission output mechanism, the control mechanism is electrically connected to the drive motor system, and the power input terminal is electrically connected to the control mechanism and the drive motor system. The strut telescopic adjustment mechanism includes a helical spring and a lead screw transmission guide mechanism. The lead screw transmission guide mechanism includes a lead screw and a push rod. The lead screw is disposed in the cylinder body via a guide rod. The guide rod has a movable guide cavity for the lead screw to reciprocate. The helical spring is sleeved on the guide rod. One end of the lead screw is connected to the transmission output mechanism via a coupling driven mechanism. The push rod is disposed at the other end of the lead screw relative to the coupling driven mechanism. One end of the helical spring abuts against the cylinder body, and the other end of the helical spring abuts against the guide rod. The rear fixing mechanism is disposed at the other end of the push rod relative to the lead screw.

[0005] Furthermore, the push rod is provided with a first annular cavity adapted to the lead screw and a second annular cavity adapted to the helical spring. The inner wall of the first annular cavity is provided with a hemispherical groove, and the hemispherical groove is provided with a ball that abuts against the lead screw.

[0006] The above technical solution guides the linear motion of the lead screw drive, ensuring stability during the extension and retraction of the push rod. It has a simple structure and a reasonable design.

[0007] Furthermore, the drive motor system adopts a DC motor, and its output shaft is connected to the power input end of the transmission output mechanism.

[0008] The above technical solution facilitates the transmission of rotational power to the lead screw, and the structure is simple and the design is reasonable.

[0009] Furthermore, the control mechanism can receive instructions from the vehicle's central control system or from an independent switch to control the forward and reverse rotation of the drive motor system.

[0010] The above technical solution makes it easy to control the extension or contraction of the strut, and the structure is simple and the design is reasonable.

[0011] Furthermore, both the front fixing mechanism and the rear fixing mechanism are ball joint structures.

[0012] The above technical solution is designed to accommodate changes in the angle of moving parts of the vehicle, and the structure is simple and the design is reasonable. Beneficial effects

[0013] This utility model's electric automotive strut device uses electric drive and screw transmission to achieve automated extension and retraction of the strut, making it easy to operate. Through the cooperation of the front fixing mechanism, the rear fixing mechanism, and various internal mechanisms, the structural stability and support reliability of the strut are ensured during the extension and retraction process, effectively improving the support experience of components such as the car hood and trunk lid. It has high practical value and market promotion prospects. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the overall structure of the electric strut device for automobiles in an embodiment of this utility model;

[0015] Figure 2 is a cross-sectional structural diagram of the electric strut device for automobiles in an embodiment of this utility model;

[0016] Figure 3 is a schematic diagram of the retracted state structure of the automotive electric strut device in an embodiment of this utility model. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0018] like Figure 1-3 The illustrated automotive electric strut device includes a cylinder block 1, a front fixing mechanism 2, a transmission output mechanism 3, a drive motor system 4, a strut telescopic adjustment mechanism 5, a rear fixing mechanism 6, a control mechanism, and a power input terminal 7. The drive motor system 4 is connected to the transmission output mechanism 3, the front fixing mechanism 2 is connected to the transmission output mechanism 3, the control mechanism is electrically connected to the drive motor system 4, and the power input terminal 7 is electrically connected to both the control mechanism and the drive motor system 4. The strut telescopic adjustment mechanism 5 includes a helical spring 51 and a lead screw transmission guide mechanism, the lead screw transmission guide mechanism including a lead screw 52. The top rod 53 and the lead screw 52 are installed inside the cylinder 1 via the guide rod 54. The guide rod 54 is provided with a movable guide cavity 541 for the lead screw 52 to reciprocate. The helical spring 51 is sleeved on the guide rod 54. One end of the lead screw 52 is connected to the transmission output mechanism 3 via the coupling driven mechanism 55. The top rod 53 is located at the other end of the lead screw 52 relative to the coupling driven mechanism 55. One end of the helical spring 51 abuts against the cylinder 1, and the other end of the helical spring 51 abuts against the guide rod 54. The rear fixing mechanism 6 is located at the other end of the top rod 53 relative to the lead screw 52.

[0019] Furthermore, the push rod 53 is provided with a first annular cavity 531 adapted to the lead screw 52 and a second annular cavity 532 adapted to the helical spring. The inner wall of the first annular cavity 531 is provided with a hemispherical groove, and the hemispherical groove is provided with a ball 533 that abuts against the lead screw. This arrangement is used to guide the linear motion of the lead screw 52 and ensure the stability of the push rod 53 during the extension and retraction process.

[0020] Furthermore, the drive motor system 4 adopts a DC motor, and its output shaft is connected to the power input end of the transmission output mechanism. This arrangement facilitates the transmission of rotational power to the lead screw 52.

[0021] Furthermore, the control mechanism can receive instructions from the vehicle's central control system or from an independent switch to control the forward and reverse rotation of the drive motor system. This configuration facilitates the control of the extension or retraction of the strut.

[0022] Furthermore, both the front fixing mechanism 2 and the rear fixing mechanism 6 are ball joint structures. This arrangement facilitates the adaptation to changes in the angle of the moving parts of the vehicle, resulting in a simple structure and a reasonable design.

[0023] In this embodiment, the electric strut device for automobiles is powered on via the power input terminal. After receiving the control signal, the control mechanism sends a command to the drive motor system. The drive motor system starts and drives the lead screw transmission guide mechanism to move, realizing the relative extension and retraction between the front and rear fixing mechanisms, thereby completing the supporting or retracting action of the car's hood or trunk lid.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electric strut device for automobiles, characterized in that: The device includes a cylinder body, a front fixing mechanism, a transmission output mechanism, a drive motor system, a strut telescopic adjustment mechanism, a rear fixing mechanism, a control mechanism, and a power input terminal. The drive motor system is connected to the transmission output mechanism, the front fixing mechanism is connected to the transmission output mechanism, the control mechanism is electrically connected to the drive motor system, and the power input terminal is electrically connected to both the control mechanism and the drive motor system. The strut telescopic adjustment mechanism includes a helical spring and a lead screw transmission guide mechanism. The lead screw transmission guide mechanism includes a lead screw and a push rod. The lead screw is mounted inside the cylinder body via a guide rod, and the guide rod has a movable guide cavity for reciprocating movement of the lead screw. The helical spring is sleeved on the guide rod. One end of the lead screw is connected to the transmission output mechanism via a coupling driven mechanism. The push rod is located at the other end of the lead screw opposite to the coupling driven mechanism. One end of the helical spring abuts against the cylinder body, and the other end of the helical spring abuts against the guide rod. The rear fixing mechanism is located at the other end of the push rod opposite to the lead screw.

2. The electric strut device for automobiles according to claim 1, characterized in that: The top rod is provided with a first annular cavity adapted to the lead screw and a second annular cavity adapted to the helical spring. The inner wall of the first annular cavity is provided with a hemispherical groove, and the hemispherical groove is provided with a ball that abuts against the lead screw.

3. The automotive electric strut device according to claim 2, characterized in that: The drive motor system uses a DC motor, and its output shaft is connected to the power input end of the transmission output mechanism.

4. The automotive electric strut device according to claim 3, characterized in that: The control mechanism can receive instructions from the vehicle's central control system or from an independent switch to control the forward and reverse rotation of the drive motor system.

5. The automotive electric strut device according to claim 1, characterized in that: Both the front fixing mechanism and the rear fixing mechanism are ball joint structures.

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