Actuator structure, actuator assembly and vehicle

Abstract

The present application provides an actuator structure, an actuator assembly and a vehicle, wherein the actuator structure comprises: an actuator shaft, wherein the actuator shaft comprises a shaft portion, wherein the actuator shaft rotates around the axis of the shaft portion, wherein the outer wall of the shaft portion is provided with a first groove extending in the axial direction; and an actuator bushing, wherein the actuator bushing is sleeved on the outer side of the shaft portion, wherein the shaft portion and the actuator bushing can be relatively rotatable, and when the actuator shaft and the actuator bushing are relatively rotated, at least part of the structure of the first groove is exposed outside the actuator bushing. When in use, the actuator shaft portion rotates, and the accumulated impurities are scraped off and discharged through the groove, thereby increasing the service life of the product and reducing the maintenance cost of the product.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle parts, and in particular to an actuator structure, an actuator assembly and a vehicle. Background Art

[0002] In actual use, the use of unqualified methanol fuel and the use of lean-burn engines with larger exhaust and water displacement than equivalent methanol engines will produce more exhaust gas in contact with the engine body, and will produce corrosive salts to corrode the valve shaft and bushing; combined with the above reasons, corrosion products and impurities are easily accumulated on the valve shaft and bushing, causing the actuator to get stuck, the exhaust gas bypass volume is too large, and the supercharger cannot provide sufficient pressure and intake volume, which reduces the engine's power. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present application provides an actuator structure, an actuator assembly and a vehicle.

[0004] According to the first aspect of the embodiment of the present application, an actuator structure is provided, the actuator structure comprising: an actuator shaft, the actuator shaft comprising a shaft portion, the actuator shaft is used to rotate around the axis of the shaft portion, the outer wall of the shaft portion is provided with a first groove extending in the axial direction; an actuator bushing, the actuator bushing is sleeved on the outer side of the shaft portion, the shaft portion and the actuator bushing can be relatively rotatable, when the actuator shaft and the actuator bushing rotate relatively, at least part of the structure of the first groove is exposed outside the actuator bushing. When in use, the actuator shaft is driven to rotate, the actuator bushing remains stationary, and the actuator bushing rotates relatively with the actuator shaft, wherein, due to the accumulation of corrosion products and impurities outside the shaft portion and inside the bushing, the corrosion products and impurities are scraped off during the relative rotation process, and the scraped corrosion products and impurities are cleaned from the part of the first groove exposed outside the actuator bushing, thereby reducing impurities attached to the actuator structure and avoiding actuator jamming.

[0005] Furthermore, the actuator shaft can rotate between a first position and a second position relative to the actuator bushing; there are a plurality of first grooves, and a protrusion is formed between adjacent first grooves. When the actuator bushing is located at the first position, the orthographic projection of the protrusion on the actuator bushing is a first projection, and when the actuator bushing is located at the second position, the orthographic projection of the protrusion on the actuator bushing is a second projection, and the first projection and the second projection do not overlap. During the rotation process, in order to ensure that the inner wall of the actuator bushing corresponding to the arc portion of the sector where the protrusion is formed is cleaned, it is necessary that the radial edge of the protrusion can sweep over the complete protrusion during the rotation process, so the first projection and the second projection cannot have overlapping parts. If there is an overlap, the overlapping part cannot be cleaned in the corresponding area of ​​the inner wall of the actuator bushing during the rotation process. The above-mentioned setting can realize the cleaning of the protrusion area.

[0006] Furthermore, the actuator shaft can rotate between a first position and a second position relative to the actuator bushing; there are a plurality of first grooves, and protrusions are formed between adjacent first grooves. When the actuator bushing is located at the first position, the orthographic projection of the next protrusion along the rotation direction on the actuator bushing is the third projection, and when the actuator bushing is located at the second position, the orthographic projection of the protrusion on the actuator bushing is the second projection, and the third projection is tangent to the second projection. During the rotation process, in order to ensure that the inner wall of the actuator bushing corresponding to the arc portion of the sector where the first groove is located is cleaned, it is necessary that the radial edge of the protrusion can sweep across the complete first groove during the rotation process, so that the third projection is at least tangent to the first projection. When the third projection is tangent to the first projection, the cleaning of the area corresponding to the inner wall of the first groove on the actuator bushing can be achieved during the rotation process.

[0007] Furthermore, a second groove is provided at the axial end of the actuator bushing, and the second groove penetrates the actuator bushing in the thickness direction; when the actuator shaft and the actuator bushing rotate relative to each other, the first groove and the second groove are connected, so that at least part of the structure of the first groove is exposed outside the actuator bushing. The second groove forms an opening on the actuator bushing that is connected to the first groove, and serves as a cleaning channel for the corrosion products and impurities scraped off the first groove. Therefore, it is necessary to penetrate the actuator bushing in the thickness direction to realize that at least part of the structure of the first groove is exposed outside the actuator bushing.

[0008] Furthermore, the number of the first grooves is multiple, and the multiple first grooves have the same shape; the actuator shaft can rotate between a first position and a second position relative to the actuator bushing; when the actuator shaft rotates between the first position and the second position, each first groove is connected to at least one second groove. Since the rotation angle of the actuator is limited during actual use, in order to increase the cleaning coverage area of ​​the inner wall of the bushing, multiple first grooves are provided to increase the area swept during the rotation process, thereby improving the cleaning efficiency, reducing the possibility of the actuator getting stuck, and reducing maintenance costs. At this time, there is no limit to the number of second grooves, and it is only necessary to ensure that the first groove is connected to the second groove during the rotation process, so as to ensure that each first groove has an opening connected to the outside world, thereby improving the efficiency of cleaning and discharging corrosion products and impurities.

[0009] Furthermore, the number of the first grooves is the same as the number of the second grooves and the shape is the same, or the number of the first grooves is the same as the number of the second grooves and the shape of the second groove is larger than the shape of the first groove. The first groove and the second groove have a fixed corresponding relationship, and the number of the first grooves is the same as the number of the second grooves to ensure that each first groove has a corresponding second groove as a discharge channel. Among them, the second groove can be the same shape as the first groove or larger than the shape of the first groove. When the shape of the second groove is the same as the first groove, each second groove is used as a discharge channel of a first groove at the same time. When the shape of the second groove is larger than the shape of the first groove, each second groove can be used as a discharge channel of two first grooves at a certain time, thereby improving the cleaning effect and the discharge efficiency of corrosion products and impurities near the second position when the actuator is restored to the first position.

[0010] Furthermore, the length of the second groove along the axial direction of the actuator bushing is less than or equal to 5 mm and greater than or equal to 3 mm. The length of the second groove along the axial direction of the actuator bushing is less than or equal to 5 mm to ensure that the structural strength of the actuator bushing is not problematic, and the length of the second groove along the axial direction of the actuator bushing is greater than or equal to 3 mm to obtain a better efficiency in discharging corrosion products and impurities.

[0011] Furthermore, the width of the first groove is greater than or equal to 3 mm and less than or equal to 5 mm; and / or, the depth of the first groove is greater than or equal to 0.5 mm and less than or equal to 3 mm. The width of the first groove is greater than or equal to 3 mm to reduce the number of first grooves required to cover the entire circumference during the cleaning process, thereby reducing the difficulty and complexity of production. The width of the first groove is less than or equal to 5 mm to ensure that the structural strength of the shaft portion does not have any accidental damage, and to ensure that the protrusions formed between the first grooves will not have any risk of structural fracture. The depth of the first groove is greater than or equal to 0.5 mm to increase the total amount of corrosion products and impurities that can be stored in the first groove, which can reduce the frequency of cleaning and save costs. The depth of the first groove is less than or equal to 3 mm to ensure that the structural strength of the shaft portion does not have any accidental damage, and to ensure that the protrusions formed between the first grooves will not have any risk of structural fracture.

[0012] Furthermore, the length of the first groove along the axis direction of the shaft portion is greater than or equal to the length of the actuator bushing along the axis direction of the shaft portion, so that at least a portion of the structure of the first groove is exposed outside the actuator bushing. By setting the first groove whose length along the axis direction of the shaft portion is greater than that of the actuator bushing, the first groove is always kept at least partially exposed outside the actuator bushing, thereby improving the cleaning efficiency.

[0013] Furthermore, the length of the part of the structure of the first groove exposed outside the actuator bushing in the axial direction of the shaft portion is greater than or equal to 2mm and less than or equal to 6mm. The length of the part of the structure of the first groove exposed outside the actuator bushing in the axial direction of the shaft portion is greater than or equal to 2mm so that sufficient corrosion products and impurities can be discharged at the same time to improve the cleaning efficiency. The length of the part of the structure of the first groove exposed outside the actuator bushing in the axial direction of the shaft portion is less than or equal to 6mm, which can save materials and improve the structural strength of the shaft portion. The part of the first groove beyond 6mm from the bushing has a low benefit in improving the cleaning efficiency and has a low cost performance. The part of the first groove that is too far away from the actuator bushing is discarded to improve the overall cost performance.

[0014] Furthermore, the extension direction of the first groove is parallel to the axial direction of the shaft portion; the first groove passes through the shaft portion. The first groove is set as a straight groove, which reduces the difficulty of the production process and reduces the cost.

[0015] Furthermore, the extension direction of the first groove forms a first angle with the axial direction of the shaft portion; the first groove passes through the shaft portion. The first groove is configured as an oblique groove, so as to obtain better impurity removal efficiency while maintaining a low processing difficulty.

[0016] Furthermore, the first angle is greater than or equal to 15° and / or less than or equal to 45°. The first angle is greater than or equal to 15° to improve the impurity removal efficiency, and the first angle is less than or equal to 45° to reduce the production difficulty, reduce the number of turns of the first groove around the shaft portion, and reduce the impact of multiple turns on the structural strength of the shaft portion.

[0017] Furthermore, the extension direction of the first groove forms a second angle with the tangent direction of the axial projection of the shaft portion; the first groove passes through the shaft portion. The first groove is configured as an arc groove to obtain better impurity removal efficiency.

[0018] Furthermore, the second angle is greater than or equal to 15° and / or less than or equal to 30°. The second angle is greater than or equal to 15° to improve the impurity removal efficiency, and the second angle is less than or equal to 45° to reduce the production difficulty, reduce the number of turns of the first groove around the shaft portion, and reduce the impact of multiple turns on the structural strength of the shaft portion.

[0019] According to the second aspect of the embodiment of the present application, an actuator assembly is provided, the actuator assembly comprising: a valve, a detection structure and an actuator structure; the actuator shaft comprises an actuator part fixedly connected to the shaft part; the actuator part is fixedly connected to the valve; the detection structure is fixedly connected to the shaft part. In actual use, when the detection structure detects that the air pressure in the supercharger is too high, an opening signal is sent to the actuator structure, and the actuator structure rotates to drive the valve to open, reduce the air pressure in the supercharger, and avoid the possibility of engine failures such as damage to turbine blades, compressor impellers and seals caused by supercharger overspeed, and even engine shutdown.

[0020] Furthermore, the detection structure includes: a transmission mechanism, including a connecting rod and a connecting rod bracket that are fixedly connected, wherein one end of the connecting rod bracket is fixed to the connecting rod, and the other end is fixedly connected to the rotating shaft portion. After receiving the opening signal of the detection structure, the connecting rod of the transmission mechanism is displaced, driving the connecting rod bracket to move, and then driving the rotating shaft portion to rotate, thereby realizing the opening of the valve.

[0021] Furthermore, the minimum distance between the connecting rod bracket and the actuator bushing is greater than or equal to 1 mm. A gap is provided between the connecting rod bracket and the actuator bushing for discharging corrosion products and impurities from a portion of the first groove close to the connecting rod bracket, and the length of the gap is greater than or equal to 1 mm to ensure that the impurities can be discharged from the gap without reducing the impurity cleaning efficiency due to blockage.

[0022] According to a third aspect of an embodiment of the present application, a vehicle is provided, comprising the actuator assembly as described above.

[0023] The technical solution provided by the embodiments of the present application may have the following beneficial effects:

[0024] In practical applications, the accumulated corrosion products and impurities are scraped off by the relative rotation of the actuator bushing and the actuator shaft, and the scraped corrosion products and impurities are cleaned off from the portion of the first groove exposed outside the actuator bushing, thereby reducing impurities attached to the actuator structure and avoiding actuator jamming.

[0025] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in the specification and constitute a part of this application, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application.

[0027] Figure 1 It is a structural diagram of an actuator assembly according to an embodiment of the present application.

[0028] Figure 2 It is a structural diagram of an actuator shaft according to an embodiment of the present application.

[0029] Figure 3 It is a first position structure diagram of an actuator structure according to an embodiment of the present application.

[0030] Figure 4 It is a second position structure diagram of the actuator structure shown in the present application according to an embodiment.

[0031] Figure 5 It is a structural diagram of the changing states of the actuator structure shown in the present application according to one embodiment.

[0032] Figure 6 It is a structural diagram of an actuator bushing according to an embodiment of the present application.

[0033] Figure 7 It is a structural diagram of an actuator shaft according to an embodiment of the present application.

[0034] Figure 8 It is a structural cross-sectional view of an actuator assembly according to an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 10. Actuator assembly, 11. Actuator structure, 12. Detection structure, 13. Valve, 100. Actuator shaft, 110. Shaft portion, 111. First position, 112. Second position, 120. First groove, 121. First angle, 130. Protrusion, 131. First projection, 132. Second projection, 133. Third projection, 140. Actuator portion, 200. Actuator bushing, 210. Second groove, 300. Transmission mechanism, 310. Connecting rod, 320. Connecting rod bracket, 330. Cavity, 340. Elastic member. DETAILED DESCRIPTION

[0037] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0038] The function of the actuator bypass valve is to adjust the boost pressure according to the intake volume demand of the engine to prevent the supercharger from overspeeding. After the boost pressure reaches the opening pressure of the spring, positive pressure is introduced from the air bleed nozzle to compress the spring and drive the pull rod to open the bypass valve. By controlling the opening and closing of the supercharger valve, the air entering the engine is controlled, the intake volume is increased, and the efficiency of the supercharger and the engine is increased.

[0039] The inventor found that, taking the 9L lean-burn methanol engine as an example, the exhaust volume and displacement of the lean-burn engine are larger than those of the equivalent methanol engine, so the engine body will be exposed to more exhaust gas. And based on the summary of the problems of the 13L test vehicle, if unqualified methanol fuel is used, corrosive salts will be generated to corrode the valve shaft and bushing; combined with the above reasons, corrosion products and impurities are easily accumulated on the valve shaft and bushing, causing the actuator to get stuck, the exhaust gas bypass volume is too large, and the supercharger cannot provide sufficient pressure and intake volume, which reduces the power of the engine.

[0040] In order to avoid the actuator from getting stuck, the inventor proposes an actuator assembly. The actuator assembly 10 can be applied to a vehicle.

[0041] like Figure 1As shown, the actuator assembly 10 includes a valve 13, a detection structure 12 and an actuator structure 11. The detection structure 12 is connected to the actuator structure to drive the actuator structure 11 to move; the valve 13 and the actuator structure 11 are fixedly connected and can move according to the movement of the actuator structure 11. In actual use, when the detection structure 12 detects that the air pressure in the supercharger is too high, the detection structure 12 drives the actuator structure 11 to move, so that the actuator structure 11 drives the valve 13 to open, reduce the air pressure in the supercharger, and avoid the possibility of engine failures such as damage to turbine blades, compressor impellers and seals caused by supercharger overspeed or even engine shutdown.

[0042] like Figure 1 As shown, the actuator structure 11 includes an actuator shaft 100 and an actuator bushing 200 .

[0043] The actuator shaft 100 includes a shaft portion 110, and the actuator shaft 100 can rotate around the axis of the shaft portion 110. The outer wall of the shaft portion 110 is provided with a first groove 120 extending in the axial direction. The actuator bushing 200 is sleeved on the outer side of the shaft portion 110, and the shaft portion 110 and the actuator bushing 200 can be relatively rotatable. When the actuator shaft 100 and the actuator bushing 200 rotate relatively, at least part of the structure of the first groove 120 is exposed outside the actuator bushing 200.

[0044] Through the above arrangement, the actuator shaft 100 is driven to rotate, the actuator bushing 200 remains stationary, and the actuator bushing 200 rotates relative to the actuator shaft 100. In the process of relative rotation, corrosion products and impurities are scraped off due to the accumulation of corrosion products and impurities outside the shaft portion 110 and inside the bushing, and the scraped corrosion products and impurities are accumulated in the first groove 120. In the case of excessive accumulation of corrosion products and impurities accumulated in the first groove 120, part of the corrosion products and impurities exposed to the outside of the actuator bushing 200 near the first groove 120 are squeezed and pushed by the newly scraped corrosion products and impurities, and the part exposed to the outside of the actuator bushing 200 through the first groove 120 leaves the first groove 120; or, after the valve 13 is opened, due to the high-pressure airflow flowing out of the valve 13, part of the high-pressure airflow flows through the first groove 120, driving the corrosion products and impurities to move in the direction away from the valve 13, and finally leaving the first groove 120 through the part exposed to the outside of the actuator bushing 200 through the first groove 120. The scraped corrosion products and impurities are cleaned up through the first groove 120, the impurities attached to the actuator structure 11 are reduced, and the actuator is prevented from getting stuck. In addition, the above-mentioned "at least part of the structure of the first groove 120 is exposed outside the actuator bushing 200" specifically means that at least part of the structure of the first groove 120 is connected to the outside at any time, and the connection method is to be exposed outside the actuator bushing 200.

[0045] Combination Figure 3 , Figure 4 and Figure 5 As shown, if necessary, combined Figure 1 and Figure 2 As shown, the actuator shaft 100 can rotate relative to the actuator bushing 200 between a first position 111 and a second position 112. Figure 5 In FIG. 1 , the structure of the actuator shaft 100 in the first position 111 is represented by a solid line, and the structure of the actuator shaft 100 in the second position 112 is represented by a dotted line. Figure 2-Figure 5 In the figure, the structure of the actuator bushing 200 is simply depicted and represented by only one line. However, in actual situations, the actuator bushing 200 is a columnar structure with thickness.

[0046] In this embodiment, there are a plurality of first grooves 120, and protrusions 130 are formed between adjacent first grooves 120. When the actuator bushing 200 is located at the first position 111, the orthographic projection of the protrusion 130 on the actuator bushing 200 is a first projection 131; when the actuator bushing 200 is located at the second position 112, the orthographic projection of the protrusion 130 on the actuator bushing 200 is a second projection 132. The first projection 131 and the second projection 132 do not overlap.

[0047] It should be noted that, in actual use, the actuator assembly 10 includes an open state and a closed state. When the actuator assembly 10 is in the open state, the actuator shaft 100 is located at the second position 112, and the valve 13 is in the open state; when the actuator assembly 10 is in the closed state, the actuator shaft 100 is located at the first position 111, and the valve 13 is in the closed state.

[0048] Through the above arrangement, during the rotation process, in order to ensure that the inner wall of the actuator bushing 200 corresponding to the arc part of the sector where the protrusion 130 is formed is cleaned, it is necessary that the radial edge of the protrusion 130 can sweep over the complete protrusion 130 during the rotation process, so the first projection 131 and the second projection 132 cannot have overlapping parts. If there is an overlap, it is impossible to clean the corresponding area of ​​the inner wall of the actuator bushing 200 of the overlapping part during the rotation process. To achieve the cleaning of the protrusion 130 area. It should be noted that the tangency mentioned above does not count as overlap. In other words, when the first projection 131 and the second projection 132 are tangent, the edge of the first projection 131 and the edge of the second projection 132 have an overlapping part, but at this time the first projection 131 and the second projection 132 are not counted as the overlap mentioned above.

[0049] When the actuator bushing 200 is located at the first position 111, the orthographic projection of the next protrusion 130 along the rotation direction on the actuator bushing 200 is the third projection 133. When the actuator bushing 200 is located at the second position 112, the orthographic projection of the protrusion 130 on the actuator bushing 200 is the second projection 132. The third projection 133 is tangent to the second projection 132.

[0050] Through the above arrangement, in order to ensure that the inner wall of the actuator bushing 200 corresponding to the arc portion of the sector where the first groove 120 is located is cleaned during the rotation process, the radial edge of the protrusion 130 needs to be able to sweep the entire first groove 120 during the rotation process, so the third projection 133 is at least tangent to the first projection 131. In the case where the third projection 133 is tangent to the first projection 131, the area corresponding to the inner wall of the actuator bushing 200 of the first groove 120 can be cleaned during the rotation process.

[0051] like Figure 6 As shown, it is necessary to combine Figure 2-Figure 5 The content shown. The axial end of the actuator bushing 200 is provided with a second groove 210, and the second groove 210 penetrates the actuator bushing 200 in the thickness direction. When the actuator shaft 100 and the actuator bushing 200 rotate relative to each other, the first groove 120 and the second groove 210 are connected, so that at least part of the structure of the first groove 120 is exposed outside the actuator bushing 200. The second groove 210 forms an opening on the actuator bushing 200 that is connected to the first groove 120. In actual use, during the rotation process, the edge of the protrusion 130 can scrape off the corrosion products and impurities of the actuator bushing 200 and accumulate in the first groove 120. The corrosion products and impurities accumulated in the first groove 120 are accumulated in the first groove 120. When the corrosion products and impurities accumulated in the first groove 120 accumulate too much, part of the corrosion products and impurities near the first groove 120 exposed to the outside of the actuator bushing 200 are squeezed and pushed by the newly scraped corrosion products and impurities and move to the opening of the first groove 120; or, after the valve 13 is opened, due to the high-pressure airflow flowing out of the valve 13, part of the high-pressure airflow flows through the first groove 120, driving the corrosion products and impurities to move away from the valve 13, and finally move to the opening of the first groove 120. Since the actuator bushing 200 is sleeved on the outside of the actuator shaft 100, the second groove 210 needs to penetrate the actuator bushing 200 in the thickness direction to expose at least part of the structure of the first groove 120 to the outside of the actuator bushing 200. Through the above arrangement, the corrosion products and impurities moved to the opening can be pushed from the opening of the first groove 120 through the second groove 210 to leave the actuator structure 11, and finally be removed.

[0052] In this embodiment, the first grooves 120 have the same shape. When the actuator shaft 100 rotates between the first position 111 and the second position 112 , each first groove 120 is connected to at least one second groove 210 .

[0053] Through the above arrangement, since the rotation angle of the actuator is limited during actual use, in order to increase the cleaning coverage area of ​​the inner wall of the bushing, multiple first grooves 120 are provided to increase the area swept during the rotation process, thereby improving the cleaning efficiency, reducing the possibility of the actuator being stuck, and reducing maintenance costs. At this time, there is no limit to the number of second grooves 210, and it is only necessary to ensure that the first grooves 120 are connected to the second grooves 210 during the rotation process, so as to ensure that each first groove 120 has an opening connected to the outside world, thereby improving the efficiency of cleaning and discharging corrosion products and impurities.

[0054] Further, such as Figure 2-Figure 5 As shown, the number of the first grooves 120 and the second grooves 210 are the same and have the same shape.

[0055] exist Figure 3-Figure 5 In the illustrated embodiment, the number of the first grooves 120 and the number of the second grooves 210 are the same, that is, four.

[0056] exist Figure 1 and Figure 2 In the illustrated embodiment, the number of the first grooves 120 and the number of the second grooves 210 are the same and both are 6. Each first groove 120 has a fixed corresponding relationship with each second groove 210. The number of the first grooves 120 and the number of the second grooves 210 are the same to ensure that each first groove 120 has a corresponding second groove 210 as a discharge channel. Among them, the second groove 210 can be the same shape as the first groove 120 or larger than the shape of the first groove 120. When the second groove 210 is the same shape as the first groove 120, each second groove 210 is used as a discharge channel of a first groove 120 at the same time. When the shape of the second groove 210 is larger than the shape of the first groove 120, each second groove 210 can be used as a discharge channel of two first grooves 120 at a certain time, thereby improving the cleaning effect and the discharge efficiency of corrosion products and impurities near the second position 112 when the actuator is restored to the first position 111.

[0057] Of course, in other embodiments, the number of the first grooves 120 and the number of the second grooves 210 may be set to different values, as long as the shape of the second groove 210 is larger than that of the first groove 120 .

[0058] Furthermore, the length of the second groove 210 along the axial direction of the actuator bushing 200 is less than or equal to 5 mm and greater than or equal to 3 mm. In the above configuration, the length of the second groove 210 along the axial direction of the actuator bushing 200 is less than or equal to 5 mm to ensure that the structural strength of the actuator bushing 200 is not problematic, and the length of the second groove 210 along the axial direction of the actuator bushing 200 is greater than or equal to 3 mm to obtain a better efficiency in discharging corrosion products and impurities.

[0059] The width of the first groove 120 is greater than or equal to 3 mm and less than or equal to 5 mm. In the above configuration, the width of the first groove 120 is greater than or equal to 3 mm, which can reduce the number of first grooves 120 required to cover the entire circumference during the cleaning process, thereby reducing the difficulty and complexity of production. The width of the first groove 120 is less than or equal to 5 mm to ensure that the structural strength of the shaft portion 110 does not have any accidents, and to ensure that the protrusions 130 formed between the first grooves 120 will not have the risk of structural fracture.

[0060] The depth of the first groove 120 is greater than or equal to 0.5 mm and less than or equal to 3 mm. In the above configuration, the depth of the first groove 120 is greater than or equal to 0.5 mm to increase the total amount of corrosion products and impurities that can be stored in the first groove 120, which can reduce the frequency of cleaning and save costs. The depth of the first groove 120 is less than or equal to 3 mm to ensure that the structural strength of the shaft portion 110 does not have accidents and ensure that the protrusions 130 formed between the first grooves 120 will not have the risk of structural fracture.

[0061] The length of the first groove 120 along the axis direction of the rotating shaft portion 110 is greater than or equal to the length of the actuator bushing 200 along the axis direction of the rotating shaft portion 110, so that at least part of the structure of the first groove 120 is exposed outside the actuator bushing 200. By setting the first groove 120 whose length along the axis direction of the rotating shaft portion 110 is greater than that of the actuator bushing 200, at this time, the actuator bushing 200 is contained in the actuator rotating shaft 100 in the length direction, that is, the first groove 120 always keeps at least part of the structure exposed outside the actuator bushing 200. As set above, since the first groove 120 always keeps at least part of the structure exposed outside the actuator bushing 200, whenever the actuator rotating shaft 100 rotates to scrape off new corrosion products and impurities, the part of the structure exposed outside the actuator bushing 200 from the first groove 120 can leave the first groove 120 in time, so as to keep the first groove 120 unobstructed, avoid blockage, and improve the cleaning efficiency.

[0062] The length of the part of the structure of the first groove 120 exposed outside the actuator bushing 200 in the axial direction of the shaft portion 110 is greater than or equal to 2 mm and less than or equal to 6 mm. In the above configuration, the length of the part of the structure of the first groove 120 exposed outside the actuator bushing 200 in the axial direction of the shaft portion 110 is greater than or equal to 2 mm so that sufficient corrosion products and impurities can be discharged at the same time to improve the cleaning efficiency. The length of the part of the structure of the first groove 120 exposed outside the actuator bushing 200 in the axial direction of the shaft portion 110 is less than or equal to 6 mm, which can save materials and improve the structural strength of the shaft portion 110. The part of the first groove 120 beyond 6 mm from the bushing has a low benefit in improving the cleaning efficiency and has a low cost performance. The part of the first groove 120 that is too far away from the actuator bushing 200 is discarded to improve the overall cost performance.

[0063] like Figure 7 As shown, in this embodiment, the extension direction of the first groove 120 forms a first angle 121 with the axial direction of the shaft portion 110 , and the first groove 120 passes through the shaft portion 110 .

[0064] Through the above arrangement, the first groove 120 is arranged as an oblique groove, so as to obtain better impurity removal efficiency while maintaining a low processing difficulty.

[0065] In this embodiment, the first angle 121 is greater than or equal to 15° and less than or equal to 45°. The inventor has determined through a large number of experiments that when the first angle 121 is greater than or equal to 15°, the impurity removal efficiency can be improved, and when the first angle 121 is less than or equal to 45°, the production difficulty can be reduced, the number of turns of the first groove 120 around the shaft portion 110 can be reduced, and the influence of multiple turns on the structural strength of the shaft portion 110 can be reduced.

[0066] Corresponding to the modification described above, of course, it should be noted that, in other embodiments, the first groove 120 can also be set as a straight groove or an arc groove. Specifically, when the first groove 120 is a straight groove, the extension direction of the first groove 120 is parallel to the axial direction of the shaft portion 110; the first groove 120 passes through the shaft portion 110. In this embodiment, the inventor has determined through a large number of experiments that when the first groove 120 is set as a straight groove, the difficulty requirements of the production process can be reduced and the cost can be reduced. Specifically, when the first groove 120 is an arc groove, the extension direction of the first groove 120 forms a second angle with the tangent direction of the axial projection of the shaft portion 110; the first groove 120 passes through the shaft portion 110. The first groove 120 is set as an arc groove to obtain better impurity removal efficiency. Wherein, the second angle is greater than or equal to 15° and less than or equal to 30°. In this embodiment, the inventors have determined through a large number of experiments that when the second angle is greater than or equal to 15°, the impurity removal efficiency can be improved, and when the second angle is less than or equal to 45°, the production difficulty can be reduced, the number of turns of the first groove 120 around the shaft portion 110 can be reduced, and the impact of multiple turns on the structural strength of the shaft portion 110 can be reduced.

[0067] Combination Figure 1 and Figure 5 As shown, the detection structure 12 includes a transmission mechanism 300, including a connecting rod 310 and a connecting rod bracket 320 that are fixedly connected, wherein one end of the connecting rod bracket 320 is fixed to the connecting rod 310, and the other end is fixedly connected to the rotating shaft portion 110. After receiving the opening signal of the detection structure 12, the connecting rod 310 of the transmission mechanism 300 is displaced, driving the connecting rod bracket 320 to move, and then driving the rotating shaft portion 110 and the actuator 140 to rotate, thereby realizing the opening of the valve 13.

[0068] Specifically, the transmission mechanism 300 further includes a cavity 330 and an elastic member 340 located in the cavity 330 . The cavity 330 is connected to the supercharger. The elastic member 340 can drive the connecting rod 310 to move.

[0069] The minimum distance between the connecting rod bracket 320 and the actuator bushing 200 is greater than or equal to 1 mm. A gap is provided between the connecting rod bracket 320 and the actuator bushing 200 for discharging corrosion products and impurities in the first groove 120 close to the connecting rod bracket 320. The length of the gap is greater than or equal to 1 mm to ensure that the impurities can be discharged from the gap without reducing the impurity cleaning efficiency due to blockage.

[0070] When the supercharger is working normally, the actuator assembly 10 is in the closed state, at which time, the actuator shaft 100 is in the first position 111, and the valve 13 is closed. When the supercharger pressure is too high, the actuator assembly 10 switches from the closed state to the open state. During this process, the detection structure 12 transmits an opening signal to the transmission mechanism 300, so that the actuator shaft 100 can rotate relative to the actuator bushing 200 and rotate from the first position 111 to the second position 112. The valve 13 is opened, which reduces the pressure of the supercharger and solves the problem of speed overspeed caused by excessive pressure in the supercharger. During the process of the actuator shaft 100 rotating from the first position 111 to the second position 112, the protrusions 130 formed between the first grooves 120 scrape off the corrosion products and impurities accumulated on the inner wall of the actuator bushing 200, and discharge the scraped corrosion products and impurities through the portion outside the actuator bushing 200 exposed by the first grooves 120, thereby reducing the corrosion products and impurities accumulated on the valve 13 shaft and bushing, reducing the wear of the shaft, protecting the supercharger, eliminating the risk of blockage between the tie rod bracket and the bushing, protecting the supercharger, and increasing the life of the supercharger.

[0071] When the pressure of the supercharger is reduced to below the threshold, the actuator assembly 10 switches from the open state to the closed state. During this process, the detection structure 12 transmits an open signal to the transmission mechanism 300, so that the actuator shaft 100 can rotate relative to the actuator bushing 200 and rotate from the second position 112 to the first position 111. The valve 13 is closed, and the pressure in the supercharger stops being reduced, which solves the problem of automatic reset after the excessive air pressure in the supercharger is reduced. During the process of the actuator shaft 100 rotating from the second position 112 to the first position 111, the protrusions 130 formed between the first grooves 120 scrape off the corrosion products and impurities accumulated on the inner wall of the actuator bushing 200, and the scraped corrosion products and impurities are discharged through the first grooves 120 that expose the part outside the actuator bushing 200, thereby reducing the corrosion products and impurities accumulated on the shaft and bushing of the valve 13, reducing the wear of the shaft, protecting the supercharger, eliminating the risk of blockage between the tie rod bracket and the bushing, protecting the supercharger, and improving the life of the supercharger.

[0072] Combination Figure 1 and Figure 8As shown, in this embodiment, the transmission mechanism 300 uses the cavity 330 and the connecting rod bracket 320 connected to the cavity 330 to achieve automatic position adjustment, thereby achieving automatic switching of the state of the actuator assembly 10. Specifically, the cavity 330 is connected to the inside of the supercharger, and an elastic member 340 is provided at the position where the cavity 330 and the connecting rod bracket 320 are fixed. The elastic member 340 extends toward the connecting rod bracket 320 after the air pressure in the cavity 330 rises to a threshold value, thereby pushing the connecting rod bracket 320 to move in a direction away from the cavity 330. Since the actuator bushing 200 is fixedly connected to other parts of the vehicle body, when the connecting rod bracket 320 moves in a direction away from the cavity 330, the end of the connecting rod bracket 320 away from the cavity 330 rotates. Since the actuator shaft 100 is fixed to the end of the connecting rod bracket 320 away from the cavity 330, the actuator shaft 100 can rotate driven by the connecting rod bracket 320, thereby driving the valve 13 to open. Of course, in other embodiments, a pressure sensor may be installed in the supercharger, and the pressure sensor is connected to the controller. The pressure sensor detects the pressure information in the supercharger and sends a pressure signal to the controller. When the pressure signal received by the controller is greater than a preset value, the controller controls the actuator shaft 100 to switch from the first position 111 to the second position 112, which is equivalent to controlling the actuator assembly 10 to switch from the closed state to the open state. When the pressure signal received by the controller drops to less than the preset value, the controller controls the actuator shaft 100 to switch from the second position 112 to the first position 111, which is equivalent to controlling the actuator assembly 10 to switch from the open state to the closed state.

[0073] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the utility model applied for herein. The present application is intended to cover any variation, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not applied for in the present application. The specification and examples are to be regarded as exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0074] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

[0075] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An actuator structure, characterized in that: include: An actuator shaft, the actuator shaft comprising a shaft portion, the actuator shaft being used to rotate around the axis of the shaft portion, and an outer wall of the shaft portion being provided with a first groove extending in the axial direction; An actuator bushing, wherein the actuator bushing is sleeved on the outer side of the rotating shaft portion, and the rotating shaft portion and the actuator bushing can be relatively rotatable; When the actuator shaft and the actuator bushing rotate relative to each other, at least a portion of the structure of the first groove is exposed outside the actuator bushing; A second groove is provided at the axial end of the actuator bushing, and the second groove penetrates the actuator bushing along the thickness direction; When the actuator shaft and the actuator bushing rotate relatively, the first groove and the second groove are communicated, so that at least a part of the structure of the first groove is exposed outside the actuator bushing.

2. The actuator structure according to claim 1, characterized in that: The actuator shaft is rotatable relative to the actuator bushing between a first position and a second position; There are multiple first grooves, and protrusions are formed between adjacent first grooves. When the actuator shaft is located at the first position, the orthographic projection of the protrusion on the actuator bushing is the first projection. When the actuator shaft is located at the second position, the orthographic projection of the protrusion on the actuator bushing is the second projection. The first projection and the second projection do not overlap.

3. The actuator structure according to claim 1, characterized in that: The actuator shaft is rotatable relative to the actuator bushing between a first position and a second position; There are multiple first grooves, and protrusions are formed between adjacent first grooves. When the actuator shaft is located at the first position, the orthographic projection of the next protrusion along the rotation direction on the actuator bushing is the third projection. When the actuator shaft is located at the second position, the orthographic projection of the protrusion on the actuator bushing is the second projection, and the third projection is tangent to the second projection.

4. The actuator structure according to claim 1, characterized in that: There are multiple first grooves, and the multiple first grooves have the same shape; The actuator shaft is rotatable relative to the actuator bushing between a first position and a second position; when the actuator shaft rotates between the first position and the second position, each of the first grooves is communicated with at least one of the second grooves.

5. The actuator structure according to claim 1, characterized in that: The number of the first grooves is the same as the number of the second grooves and the shape is the same, or the number of the first grooves is the same as the number of the second grooves and the shape of the second groove is larger than that of the first groove.

6. The actuator structure according to claim 1, characterized in that: The length of the second groove along the axial direction of the actuator bushing is less than or equal to 5 mm and greater than or equal to 3 mm.

7. The actuator structure according to claim 1, characterized in that: The width of the first groove is greater than or equal to 3 mm and less than or equal to 5 mm; and / or, The depth of the first groove is greater than or equal to 0.5 mm and less than or equal to 3 mm.

8. The actuator structure according to claim 1, characterized in that: The length of the first groove along the axial direction of the shaft portion is greater than or equal to the length of the actuator bushing along the axial direction of the shaft portion, so that at least a portion of the structure of the first groove is exposed outside the actuator bushing.

9. The actuator structure according to claim 8, characterized in that: The length of the portion of the first groove exposed outside the actuator bushing in the axial direction of the rotating shaft portion is greater than or equal to 2 mm and less than or equal to 6 mm.

10. The actuator structure according to claim 1, characterized in that: The extending direction of the first groove is parallel to the axial direction of the shaft portion; the first groove passes through the shaft portion; or, The extending direction of the first groove forms a first angle with the axial direction of the shaft portion; the first groove passes through the shaft portion; or, An extension direction of the first groove forms a second angle with a tangent direction of an axial projection of the rotating shaft portion; and the first groove passes through the rotating shaft portion.

11. The actuator structure according to claim 10, characterized in that: When the extension direction of the first groove forms a first angle with the axial direction of the shaft portion, the first angle is greater than or equal to 15° and / or less than or equal to 45°; When the extension direction of the first groove forms a second angle with the tangent direction of the axial projection of the shaft portion, the second angle is greater than or equal to 15° and / or less than or equal to 30°.

12. An actuator assembly, characterized in that: include: A valve, a detection structure and an actuator structure as claimed in any one of claims 1 to 11; The actuator shaft includes an actuator portion fixedly connected to the shaft portion; The actuator is fixedly connected to the valve; The detection structure is fixedly connected to the rotating shaft portion.

13. The actuator assembly according to claim 12, used for connecting a supercharger, characterized in that: The detection structure comprises: The transmission mechanism comprises a connecting rod and a connecting rod bracket which are fixedly connected. One end of the connecting rod bracket is fixed to the connecting rod, and the other end is fixedly connected to the rotating shaft.

14. The actuator assembly according to claim 13, characterized in that: The minimum distance between the connecting rod bracket and the actuator bushing is greater than or equal to 1 mm.

15. A vehicle, characterized in that: Comprising an actuator assembly as described in any one of claims 12-14.

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