Automobile turbocharging actuator

Abstract

The utility model relates to the technical field of actuators, and discloses an automobile turbocharging actuator which comprises an upper shell, a lower shell, a motor, a gear transmission mechanism, an output shaft, a spring damping assembly and an adjusting mechanism. The adjusting mechanism comprises an adjusting cap in threaded connection with the column body and a pressing rod, and the pressing rod is connected with the spring damping assembly. The gear transmission mechanism is composed of a driving gear, a transmission gear and an output gear. The spring damping assembly comprises a sliding sealing ring, an upper buffer spring, a clamping ring and a lower buffer spring. The spring damping assembly of the actuator can absorb impact force, reduce vibration of the output shaft and improve operation stability and positioning accuracy of the valve. The adjusting mechanism can flexibly adjust the pressure of the spring to meet the load requirements of different working conditions, and the problems existing in an existing actuator are effectively solved.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, specifically to an automotive turbocharger actuator. Background Technology

[0002] In the turbocharging system of a car engine, the turbocharger actuator plays a crucial role. It is mainly responsible for controlling the opening of the turbocharger's exhaust bypass valve or variable geometry turbine blades to regulate the boost pressure and ensure that the engine maintains good performance and fuel economy under different operating conditions.

[0003] Existing automotive turbocharger actuators, such as those comprising an upper housing, lower housing, motor, gear transmission mechanism, and output shaft (e.g., an electronic actuator disclosed in application number CN201910533508.0), exhibit several problems in practical use. Due to load fluctuations and complex external environmental disturbances during operation, the output shaft is prone to vibration. This not only reduces the smoothness of valve operation, resulting in inaccurate valve opening control and affecting engine boost performance, but may also lead to accelerated wear of internal actuator components, shortening the actuator's lifespan. Furthermore, existing actuators often struggle to flexibly adapt to different load requirements under varying operating conditions. When faced with complex and ever-changing automotive driving conditions, they fail to adequately match different working conditions, thus limiting further improvements in engine performance.

[0004] Based on the shortcomings of the existing technology, there is an urgent need for an automotive turbocharged actuator that can effectively absorb the impact force during actuator operation, reduce output shaft vibration, improve valve operation stability and positioning accuracy, and flexibly match the load requirements under different working conditions. Utility Model Content

[0005] In view of the shortcomings of the prior art, this utility model provides an automotive turbocharger actuator.

[0006] The technical solution adopted by this utility model is: an automotive turbocharger actuator, including an upper housing, a lower housing, a motor, a gear transmission mechanism and an output shaft. The upper housing has a shaft hole for the output shaft to extend from the column. It also includes a spring damping assembly and an adjustment mechanism for adjusting the pressure of the spring damping assembly.

[0007] The adjustment mechanism includes an adjustment cap threadedly connected to the column and a pressure rod connected to the adjustment cap. The pressure rod is connected to a spring damping assembly.

[0008] Furthermore, the gear transmission mechanism includes a drive gear connected to the output end of the motor, a transmission gear meshing with the drive gear, and an output gear meshing with the transmission gear, wherein the drive gear is located between the output gear and the drive gear.

[0009] Furthermore, the spring damping assembly includes a sliding sealing ring, an upper buffer spring, a retaining ring, and a lower buffer spring, which are sequentially fitted into the shaft hole from top to bottom. The shaft hole is provided with a step for positioning the retaining ring. The stepped ring of the output gear is provided with a connecting groove for the end of the lower buffer spring to be engaged. The lower buffer spring is fitted onto the tooth post of the output gear, and its upper end is connected to the retaining ring.

[0010] Furthermore, a spring sleeve is fitted on the output shaft, the sliding sealing ring is fitted outside the spring sleeve, one end of the upper buffer spring is connected to the sliding sealing ring, and the other end is connected to the positioning retaining ring.

[0011] Furthermore, the sliding sealing ring is provided with sealing grooves on both the outer and inner sides, and a sealing ring is provided in the sealing groove.

[0012] Furthermore, the sliding sealing ring is provided with a sliding groove, and the hemisphere at the top of the pressure rod slides in conjunction with the sliding groove.

[0013] The beneficial effects of this utility model are:

[0014] 1. Improved Valve Operation Smoothness and Positioning Accuracy: This application, by incorporating a spring damping assembly, effectively absorbs the impact force during actuator operation. When the load fluctuates or encounters external disturbances, the vibration of the output shaft is significantly reduced. The spring damping assembly absorbs the impact force during actuator operation, reducing output shaft vibration caused by load fluctuations or external disturbances, thereby improving the smoothness of valve operation and positioning accuracy.

[0015] 2. Flexible matching of different working conditions and load requirements: Through the set adjustment mechanism, including the adjustment cap connected to the column thread and the pressure rod connected to the adjustment cap, the buffer pressure of the spring damping component can be adjusted, so that the actuator can better adapt to various complex working conditions.

[0016] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the internal components of this utility model.

[0020] Figure 4 for Figure 2 Enlarged diagram of point A in the middle.

[0021] Figure 1-4 In the middle: 1. Upper housing; 2. Lower housing; 3. Motor; 4. Output shaft; 5. Shaft hole; 6. Adjusting cap; 7. Pressure rod; 8. Drive gear; 9. Transmission gear; 10. Output gear; 11. Sliding sealing ring; 12. Upper buffer spring; 13. Snap ring; 14. Lower buffer spring; 15. Step; 16. Connecting groove; 17. Gear column; 18. Spring sleeve; 19. Sealing groove; 20. Sealing ring; 21. Slide groove; 22. Hemisphere; 23. Column. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0024] This utility model provides an automotive turbocharger actuator.

[0025] In this embodiment, refer to Figure 1-4 The automotive turbocharger actuator includes an upper housing 1, a lower housing 2, a motor 3, a gear transmission mechanism, and an output shaft 4. The upper housing has a shaft hole 5 for the output shaft to extend from the column 23. It also includes a spring damping assembly and an adjustment mechanism for adjusting the pressure of the spring damping assembly.

[0026] The adjustment mechanism includes an adjustment cap 6 threadedly connected to the column 23 and a pressure rod 7 connected to the adjustment cap 6. The pressure rod 7 is connected to the spring damping assembly.

[0027] In the above technical solution, a spring damping assembly and an adjusting mechanism are incorporated. The spring damping assembly absorbs the impact force generated during actuator operation, greatly reducing the vibration of the output shaft caused by load fluctuations or external disturbances, and significantly improving the smoothness and positioning accuracy of valve operation. The adjusting mechanism can flexibly adjust the pressure of the spring damping assembly according to different working conditions, enhancing the actuator's adaptability to complex working conditions.

[0028] Specifically, the gear transmission mechanism includes a drive gear 8 connected to the output end of the motor, a transmission gear 9 meshing with the drive gear 8, and an output gear 10 meshing with the transmission gear. The drive gear is located between the output gear and the drive gear.

[0029] In this embodiment, a gear transmission mechanism consisting of a drive gear, a transmission gear, and an output gear achieves efficient transmission of motor power. Positioning the drive gear between the output gear and the drive gear effectively reduces the overall size.

[0030] Specifically, the spring damping assembly includes a sliding sealing ring 11, an upper buffer spring 12, a retaining ring 13, and a lower buffer spring 14, which are sequentially fitted into the shaft hole from top to bottom. The shaft hole is provided with a step 15 for positioning the retaining ring. The stepped ring of the output gear is provided with a connecting groove 16 for the end of the lower buffer spring to be engaged. The lower buffer spring is fitted onto the tooth post 17 of the output gear, and its upper end is connected to the retaining ring.

[0031] In this embodiment, the spring damping assembly adopts a combined structure of a sliding sealing ring, an upper buffer spring, a retaining ring, and a lower buffer spring. The upper and lower buffer springs work together to absorb the vibration energy of the output shaft from all directions, further enhancing the damping effect. The fit between the retaining ring and the shaft hole step and the output gear connecting groove enables precise positioning and installation of the spring assembly, ensuring the stability and reliability of the structure and guaranteeing the stable performance of the damping function.

[0032] Specifically, a spring sleeve 18 is also fitted on the output shaft, and the sliding sealing ring is fitted outside the spring sleeve 18. One end of the upper buffer spring is connected to the sliding sealing ring, and the other end is connected to the positioning retaining ring.

[0033] In this embodiment, a spring sleeve is added to the output shaft, and a sliding sealing ring is fitted over the spring sleeve. An upper buffer spring is connected to both. The spring sleeve serves to protect the output shaft and position the sliding sealing ring.

[0034] Specifically, the sliding sealing ring is provided with sealing grooves 19 on both the outer and inner sides, and sealing rings 20 are provided in the sealing grooves.

[0035] In this embodiment, sealing grooves are provided on both the outer and inner sides of the sliding sealing ring, and sealing rings are installed thereon. This effectively prevents foreign objects such as dust and impurities from entering the actuator, avoiding wear or damage to internal components. Simultaneously, it prevents lubricating oil leakage, ensuring proper lubrication of internal components, extending the actuator's service life, and improving its operational reliability and stability.

[0036] Specifically, the sliding sealing ring is provided with a sliding groove 21, and the hemisphere 22 at the top of the pressure rod slides in cooperation with the sliding groove 21.

[0037] In this embodiment, a groove is provided on the sliding sealing ring, and the hemisphere at the top of the pressure rod slides in cooperation with it. The groove and the hemisphere are adapted to each other, serving to position the pressure rod. The hemisphere at the top of the pressure rod reduces friction between the pressure rod and the sliding sealing ring.

[0038] The specific adjustment principle of the adjustment mechanism is as follows: During adjustment, the operator rotates the adjustment cap. Due to the threaded transmission, the adjustment cap moves axially along the column, causing the pressure rod to move synchronously. The top of the pressure rod engages with the sliding groove of the sliding sealing ring in the spring damping assembly. The movement of the pressure rod will push the sliding sealing ring axially along the shaft hole.

[0039] The sliding sealing ring then compresses or releases the upper and lower buffer springs. When the springs are compressed, their elastic potential energy increases, increasing the buffering resistance to the output shaft vibration and increasing the pressure on the spring damping assembly; conversely, when the springs are extended, the pressure decreases.

[0040] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A turbocharger actuator for an automobile, comprising an upper housing, a lower housing, a motor, a gear transmission mechanism and an output shaft, a shaft hole for the output shaft to extend out is arranged on the column of the upper housing, characterized in that: The spring damping assembly and an adjusting mechanism for adjusting the pressure of the spring damping assembly are further included; The adjusting mechanism comprises an adjusting cap screwed with the column and a pressing rod connected with the adjusting cap, and the pressing rod is connected with the spring damping assembly; The gear transmission mechanism comprises a driving gear connected with the motor output end, a transmission gear meshed with the driving gear, and an output gear meshed with the transmission gear, and the driving gear is located between the output gear and the driving gear; The spring damping assembly comprises a sliding sealing ring, an upper buffer spring, a snap ring and a lower buffer spring which are sequentially sleeved in the shaft hole from top to bottom, the shaft hole is provided with a step for positioning the snap ring, the step ring of the output gear is provided with a connecting groove for the end of the lower buffer spring to be clamped, and the lower buffer spring is sleeved on the tooth column of the output gear and connected with the snap ring at the upper end.

2. The automotive turbocharger actuator of claim 1, wherein: A spring sleeve is further sleeved on the output shaft, the sliding sealing ring is sleeved outside the spring sleeve, one end of the upper buffer spring is connected with the sliding sealing ring, and the other end is connected with the positioning snap ring.

3. The automotive turbocharger actuator of claim 2, wherein: The sliding sealing ring is provided with a sealing groove on the outer side and the inner side, and a sealing ring is arranged in the sealing groove.

4. The automotive turbocharger actuator of claim 1, wherein: The sliding sealing ring is provided with a sliding groove, and the hemispherical body at the top of the pressing rod is in sliding fit with the sliding groove.

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