Throttle valve structure, engine assembly and vehicle

Abstract

The utility model relates to the technical field of engine components, and particularly discloses a throttle valve structure, an engine assembly and a vehicle. The throttle valve structure comprises a throttle valve body and a throttle valve blade, an air inlet channel is formed in the throttle valve body, the throttle valve blade is rotatably arranged in the air inlet channel, the throttle valve blade comprises a metal body and a plastic part wrapping the periphery of the metal body, and the metal body and the plastic part are connected in an embedded mode. The thickness of the part, close to the metal body, of the plastic part is gradually reduced to the thickness of the metal body in the direction close to the metal body. The throttle valve structure has the rigidity of metal and the flexibility of plastic and is small in torsional stress during rotation, and the plastic part has the characteristic that the plastic part is difficult to combine with ice, so that the probability that the throttle valve blade is adhered to the inner wall of the air inlet channel is reduced, and the normal opening and closing stability of the throttle valve blade is improved. In addition, due to the fact that the corrosion resistance of the plastic part is high, the service life of the throttle valve blade is prolonged.

Description

Throttle body structure, engine assembly and vehicle Technical Field

[0001] This application relates to the field of engine component technology, specifically to a throttle valve structure, engine assembly, and vehicle. Background Technology

[0002] The throttle valve is an important component in an internal combustion engine (such as a car engine). Its main function is to control the amount of air entering the engine cylinders, thereby regulating the engine's power output. When the throttle valve is working, it mainly relies on controlling the rotation of the throttle valve blades to control the airflow area, thus controlling the amount of air entering the engine cylinders.

[0003] However, current throttle body blades are generally made of metal. Metal throttle body blades experience greater torsional stress when the intake passage is icy and are prone to sticking to the inner wall of the intake passage, which prevents the throttle body blades from opening and closing properly. In addition, metal throttle body blades have poor corrosion resistance, resulting in a shorter service life. Summary of the Invention

[0004] In view of the above, it is necessary to propose a throttle valve structure, engine assembly, and vehicle to improve the stability and service life of the throttle valve blades during normal opening and closing.

[0005] This application provides a throttle valve structure, including a throttle valve body and a throttle valve blade. The throttle valve body has an intake channel, and the throttle valve blade is rotatably disposed in the intake channel. The throttle valve blade includes a metal body and a plastic part surrounding the metal body. The thickness of the portion of the plastic part near the metal body gradually decreases along the direction close to the metal body to the thickness of the metal body. The metal body and the plastic part are interlocked, and the metal body is configured to close the intake channel through the plastic part.

[0006] In some embodiments, the portion of the metal body extending into the plastic part has a fitting hole extending axially along the metal body, and a portion of the plastic part fills the fitting hole.

[0007] In some embodiments, the portion of the metal body extending into the plastic part is provided with an inserting protrusion, the inserting protrusion being embedded within the plastic part.

[0008] In some embodiments, a first mounting groove and a second mounting groove are respectively provided on opposite sides of the metal body. The first mounting groove and the second mounting groove both extend circumferentially along the metal body and communicate with the peripheral sidewall of the metal body. A protrusion is formed between the first mounting groove and the second mounting groove in the metal body. The first mounting groove and the second mounting groove are symmetrically arranged with the protrusion as the center. The plastic part and the protrusion are interlocked and fill the first mounting groove and the second mounting groove.

[0009] In some embodiments, there are two plastic parts, and two fixing protrusions are provided on the periphery of the metal body. The two fixing protrusions extend radially along the metal body and are symmetrically arranged with the metal body as the center. The two fixing protrusions are located between the two plastic parts, and both ends of each plastic part are connected to the two fixing protrusions respectively. The throttle structure also includes two clamping members. The two clamping members extend radially along the metal body and are rotatably connected to the throttle body. The metal body and the two fixing protrusions are clamped between the two clamping members.

[0010] In some embodiments, the thickness of the portion of the plastic part away from the metal body gradually decreases in the direction away from the metal body.

[0011] In some embodiments, the inner wall of the air intake channel, corresponding to the portion of the plastic part, is provided with a hydrophobic rough surface.

[0012] In some embodiments, the inner wall of the intake passage is provided with an annular protrusion, and the throttle valve blade is rotatably disposed within the annular protrusion.

[0013] The throttle structure of this embodiment comprises a metal body and a plastic component surrounding the metal body, with the metal body and plastic component interlocking to create a stronger bond. This design combines the rigidity of metal with the flexibility of plastic. By gradually reducing the thickness of the plastic component near the metal body to the same thickness as the metal body, the force exerted on the edge of the plastic component during edge compression is reduced. When the intake passage freezes, the flexible plastic component reduces the torsional stress on the throttle blade during rotation. The gradually decreasing thickness of the plastic component near the metal body further reduces this torsional stress, ensuring sufficient compression space for the throttle blade. Furthermore, the plastic component's resistance to ice reduces the likelihood of the throttle blade sticking to the inner wall of the intake passage, thereby improving the stability of the throttle blade's normal opening and closing. In addition, since the plastic parts are the parts that directly contact the throttle body and the throttle blades, and the plastic parts are highly corrosion resistant, the service life of the throttle blades is improved.

[0014] This application also provides an engine assembly including the throttle valve structure described above.

[0015] The engine assembly of this application embodiment improves the stability and service life of the normal opening and closing of the throttle valve blades by setting the above-mentioned throttle valve structure, and improves the accuracy of controlling the output power of the engine assembly.

[0016] This application also provides a vehicle including the engine assembly described above.

[0017] The engine assembly of this application embodiment improves the stability and service life of the normal opening and closing of the throttle valve blades and enhances the accuracy of controlling the output power of the engine assembly by providing an engine assembly including the above-described throttle valve structure. Attached Figure Description

[0018] Figure 1 is a three-dimensional structural diagram of the throttle valve structure provided in the embodiment of this application.

[0019] Figure 2 is a partially enlarged schematic diagram of the hydrophobic rough surface in the throttle structure shown in Figure 1.

[0020] Figure 3 is a three-dimensional structural diagram of the throttle valve blade and clamping component in the throttle valve structure shown in Figure 1.

[0021] Figure 4 is a schematic diagram of the exploded structure of the throttle body blade in Figure 3.

[0022] Figure 5 is a cross-sectional view of the throttle blade along the VV direction in Figure 3.

[0023] Figure 6 is a cross-sectional schematic diagram of a throttle valve blade in another embodiment of this application.

[0024] Figure 7 shows the torsional stress distribution of the throttle blade in the throttle structure shown in Figure 1 and the existing all-metal throttle blade when ice forms on the inner wall of the intake passage.

[0025] Figure 8 is a structural schematic diagram of the vehicle provided in an embodiment of this application.

[0026] Explanation of main component symbols: Vehicle 1000, Engine assembly 100, Throttle structure 1, Throttle body 10, Intake passage 11, Annular protrusion 111, Hydrophobic rough surface 1111, Hydrophobic groove 1111a, Connecting hole 12, Throttle blade 20, Metal body 21, Protrusion 211, Fitting hole 2111, Fitting protrusion 2112, First mounting groove 212, Second mounting groove 213, Fixing protrusion 214, Plastic part 22, Clamping part 30, Axial direction F. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] The following will describe some embodiments of this application in detail with reference to the accompanying drawings.

[0031] Please refer to Figures 1 and 8. This application embodiment provides a throttle valve structure 1, applied to an engine assembly 100. The engine assembly 100 can be applied to vehicles 1000 such as hybrid vehicles, gasoline vehicles, and electric vehicles; obviously, this is not a limitation of this application embodiment.

[0032] Please refer to Figures 1, 3, 4, and 5. In this embodiment, the throttle structure 1 includes a throttle body 10 and a throttle blade 20. The throttle body 10 has an intake passage 11, and the throttle blade 20 is rotatably disposed in the intake passage 11. The throttle blade 20 includes a metal body 21 and a plastic part 22 surrounding the periphery of the metal body 21. The metal body 21 and the plastic part 22 are interlocked. The thickness of the portion of the plastic part 22 near the metal body 21 gradually decreases along the direction close to the metal body 21 to the thickness of the metal body 21. That is, the thickness of the portion of the plastic part 22 near the metal body 21 gradually decreases until the edge of the plastic part 22 near the metal body 21 is flush with the side of the metal body 21. The metal body 21 is configured to close the intake passage 11 through the plastic part 22. The periphery of the metal body 21 is the edge of the peripheral side of the metal body 21, including the peripheral sidewall of the metal body 21 and the portion of the metal body 21 near the peripheral sidewall.

[0033] The throttle structure 1 of this embodiment includes a metal body 21 and a plastic part 22 wrapped around the periphery of the metal body 21 by setting the throttle blade 20. The metal body 21 and the plastic part 22 are interlocked with each other, making the metal body 21 and the plastic part 22 more firmly bonded. The throttle blade 20 has both the rigidity of metal and the flexibility of plastic. By setting the thickness of the part of the plastic part 22 near the metal body 21 to gradually decrease along the direction close to the metal body 21 to the thickness of the metal body 21, the force exerted on the edge of the plastic part 22 when the part of the plastic part 22 near the metal body 21 is reduced. When the intake passage 11 freezes, the flexible plastic part 22 reduces the torsional stress of the throttle body 20 during rotation. The gradually decreasing thickness of the plastic part 22 near the metal body 21 further reduces the torsional stress of the throttle body 20 during rotation, ensuring sufficient compression space for the throttle body 20. Furthermore, the plastic part 22 has the characteristic of being difficult for ice to adhere to, thus reducing the probability of the throttle body 20 sticking to the inner wall of the intake passage 11, thereby improving the stability of the normal opening and closing of the throttle body 20. In addition, since the plastic part 22 is the part that directly contacts the throttle body 10, and the plastic part 22 has strong corrosion resistance, the service life of the throttle body 20 is improved.

[0034] In this embodiment, the metal body 21 is made of stainless steel or aluminum alloy. Stainless steel or aluminum alloy has good ductility and corrosion resistance, thereby improving the ease of manufacturing the metal body 21 and increasing the service life of the throttle blade 20.

[0035] In this embodiment, the plastic part 22 is made of highly corrosion-resistant rubber, thereby further improving the service life of the throttle blade 20.

[0036] In this embodiment, the throttle body blade 20 is manufactured using a metal bonding process, in which the plastic part 22 is injection molded around the metal body 21, thereby forming a single integral structure between the plastic part 22 and the metal body 21. This improves the bonding strength between the plastic part 22 and the metal body 21.

[0037] In this embodiment, the thickness of the portion of the plastic part 22 away from the metal body 21 gradually decreases along the direction away from the metal body 21. This design increases the flexibility of the edges of the plastic part 22, thereby reducing the torsional stress of the throttle vane 20 during rotation, further ensuring that the throttle vane 20 has sufficient compression space, and improving the stability of the normal opening and closing of the throttle vane 20.

[0038] Please refer to Figure 1. In this embodiment, the inner wall of the intake channel 11 is provided with an annular protrusion 111. The annular protrusion 111 is coaxial with the intake channel 11, and the throttle blade 20 is rotatably disposed in the annular protrusion 111.

[0039] Because the throttle body 10 needs to consider the assembly requirements with other components of the engine assembly 100 during manufacturing, the diameter of the intake passage 11 cannot be equivalent to the diameter of the throttle blade 20. This results in a larger gap between the throttle blade 20 and the inner wall of the intake passage 11, leading to poor sealing of the throttle blade 20. By providing an annular protrusion 111, the diameter of the annular protrusion 111 can be made approximately the same as the diameter of the throttle blade 20, thereby reducing the gap between the throttle blade 20 and the annular protrusion 111, and thus improving the sealing of the throttle blade 20.

[0040] Referring to Figure 2, in this embodiment, the inner wall of the air intake channel 11 corresponding to the plastic part 22 is provided with a hydrophobic rough surface 1111.

[0041] Specifically, at least a portion of the hydrophobic rough surface 1111 is disposed on the inner wall of the annular protrusion 111. The hydrophobic rough surface 1111 can be formed by creating micron-level hydrophobic grooves 1111a on the inner wall of the annular protrusion 111 through techniques such as laser etching, chemical etching, or electrochemical processing, thereby forming a rough structure of the hydrophobic rough surface 1111. By setting the hydrophobic rough surface 1111, the hydrophobic performance is improved, thereby reducing the probability of icing occurring on the inner wall of the air intake channel 11 corresponding to the plastic part 22.

[0042] Please refer to Figures 1, 4, and 5. In this embodiment, the portion of the metal body 21 that extends into the plastic part 22 has a fitting hole 2111 extending along the axial direction F of the metal body 21, and a portion of the plastic part 22 fills the fitting hole 2111. This arrangement improves the firmness of the bond between the plastic part 22 and the metal body 21.

[0043] In this embodiment, there are multiple interlocking holes 2111, which are evenly arranged along the circumference of the metal body 21. By providing multiple interlocking holes 2111, the firmness of the bond between the plastic part 22 and the metal body 21 is further improved.

[0044] Referring to Figure 6, in some other embodiments, the portion of the metal body 21 extending into the plastic part 22 is provided with an inserting protrusion 2112, which is embedded within the plastic part 22. This arrangement improves the firmness of the bond between the plastic part 22 and the metal body 21.

[0045] In other embodiments, the metal body 21 may also have a fitting hole 2111 and a fitting protrusion 2112. The fitting hole 2111 and the fitting protrusion 2112 are arranged radially along the metal body 21, so that the metal body 21 and the plastic part 22 are fitted together, thereby improving the bonding force between the metal body 21 and the plastic part 22, and further improving the firmness of the bond between the plastic part 22 and the metal body 21.

[0046] Of course, in some other embodiments, the insertion hole 2111 and the insertion protrusion 2112 may also be arranged in a cross pattern along the circumference of the metal body 21, and this application embodiment does not specifically limit this.

[0047] Referring to Figures 4 and 5, in this embodiment, a first mounting groove 212 and a second mounting groove 213 are respectively provided on opposite sides of the metal body 21. Both the first mounting groove 212 and the second mounting groove 213 extend circumferentially along the metal body 21 and communicate with the peripheral sidewall of the metal body 21. A protrusion 211 is formed between the first mounting groove 212 and the second mounting groove 213 on the metal body 21. The first mounting groove 212 and the second mounting groove 213 are symmetrically arranged with the protrusion 211 as the center. The plastic part 22 and the protrusion 211 are interlocked and fill the first mounting groove 212 and the second mounting groove 213.

[0048] By providing the first assembly groove 212 and the second assembly groove 213, it is convenient to accurately inject the plastic part 22 onto the periphery of the metal body 21 without making the plastic part 22 too thick, which would affect its flexibility. In addition, the first assembly groove 212 and the second assembly groove 213 also have a positioning function, thereby further improving the firmness and accuracy of the connection between the plastic part 22 and the metal body 21.

[0049] In this embodiment, the fitting hole 2111 is formed on the protrusion 211. In some other embodiments, when the metal body 21 is provided with a fitting protrusion 2112, the fitting protrusion 2112 is also provided on the protrusion 211.

[0050] Please refer to Figures 1, 3 and 4. In this embodiment, there are two plastic parts 22. The periphery of the metal body 21 is provided with two fixing protrusions 214. The two fixing protrusions 214 extend radially along the metal body 21 and are symmetrically arranged with the metal body 21 as the center. The two fixing protrusions 214 are located between the two plastic parts 22. The two ends of each plastic part 22 are respectively connected to the two fixing protrusions 214.

[0051] The throttle body structure 1 also includes two clamping members 30, which extend radially along the metal body 21 and are rotatably connected to the throttle body 10. The metal body 21 and two fixed protrusions 214 are clamped between the two clamping members 30.

[0052] Specifically, two fixed protrusions 214 divide the first mounting groove 212, the second mounting groove 213, and the protrusion 211 into two equal parts. Two plastic parts 22 are respectively engaged with and fill the corresponding first mounting groove 212 and the corresponding second mounting groove 213 with the two protrusions 211. Two clamping parts 30 are fixedly connected to the metal body 21 by bolts (not shown). The two ends of the two clamping parts 30 pass through the connecting holes 12 opened in the throttle body 10, thereby rotatably connecting with the throttle body 10.

[0053] By providing two clamping members 30 to clamp the metal body 21 and rotatably connect it to the throttle body 10, the ease of installing the throttle vane 20 and the ease of rotatably connecting the throttle vane 20 to the throttle body 10 are improved. Furthermore, since directly clamping the plastic part 22 with the two clamping members 30 could easily damage it, by providing two fixing protrusions 214 and using the two clamping members 30 to clamp the metal body 21 and the two fixing protrusions 214, the area of ​​rigid contact between the two clamping members 30 and the throttle vane 20 is increased. This improves the firmness of the two clamping members 30 in fixing the throttle vane 20. Moreover, since the two clamping members 30 do not contact the plastic part 22, the probability of damaging the plastic part 22 is reduced, thereby increasing the service life of the throttle vane 20.

[0054] Please refer to Figure 7. Figure A in Figure 7 shows the torsional stress distribution of the throttle blade 20 when ice forms on the inner wall of the intake passage 11 in this embodiment. Figure B in Figure 7 shows the torsional stress distribution of the all-metal throttle blade when ice forms on the inner wall of the intake passage 11. It can be seen that the torsional stress of the throttle blade 20 in this embodiment is much smaller than that of the all-metal throttle blade, thereby improving the stability of the normal opening and closing of the throttle blade 20.

[0055] In summary, the throttle structure 1 of this embodiment includes a metal body 21 and a plastic part 22 surrounding the metal body 21 by setting the throttle blade 20. The metal body 21 and the plastic part 22 are interlocked, making the metal body 21 and the plastic part 22 more firmly bonded. The throttle blade 20 has both the rigidity of metal and the flexibility of plastic. By setting the thickness of the part of the plastic part 22 near the metal body 21 to gradually decrease along the direction close to the metal body 21 to the thickness of the metal body 21, the force exerted on the edge of the plastic part 22 when the part of the plastic part 22 near the metal body 21 is reduced. When the intake passage 11 freezes, the flexible plastic part 22 reduces the torsional stress of the throttle body 20 during rotation. The gradually decreasing thickness of the plastic part 22 near the metal body 21 further reduces the torsional stress of the throttle body 20 during rotation, ensuring sufficient compression space for the throttle body 20. Furthermore, the plastic part 22 has the characteristic of being difficult for ice to adhere to, thus reducing the probability of the throttle body 20 sticking to the inner wall of the intake passage 11, thereby improving the stability of the normal opening and closing of the throttle body 20. In addition, since the plastic part 22 is the part that directly contacts the throttle body 10, and the plastic part 22 has strong corrosion resistance, the service life of the throttle body 20 is improved.

[0056] Please refer to Figure 8. This application embodiment also provides an engine assembly 100, including the throttle structure 1 as described above.

[0057] The engine assembly 100 of this application embodiment improves the stability and service life of the normal opening and closing of the throttle valve blade 20 by setting the throttle valve structure 1 described above, and also improves the accuracy of controlling the output power of the engine assembly 100.

[0058] Please refer to Figure 8. This application embodiment also provides a vehicle 1000, including the engine assembly 100 as described above.

[0059] The engine assembly 100 of this application embodiment improves the stability and service life of the normal opening and closing of the throttle valve blade 20 by providing an engine assembly 100 including the above-described throttle valve structure 1, and improves the accuracy of controlling the output power of the engine assembly 100.

[0060] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded in all respects as exemplary and not restrictive, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A throttle valve structure, characterized in that, The device includes a throttle body and a throttle blade. The throttle body has an intake channel, and the throttle blade is rotatably disposed in the intake channel. The throttle blade includes a metal body and a plastic part surrounding the metal body. The metal body and the plastic part are interlocked. The thickness of the portion of the plastic part near the metal body gradually decreases to the thickness of the metal body along the direction close to the metal body. The metal body is configured to close the intake channel through the plastic part.

2. The throttle valve structure as described in claim 1, characterized in that, The portion of the metal body extending into the plastic part has a fitting hole extending axially along the metal body, and a portion of the plastic part fills the fitting hole.

3. The throttle valve structure as described in claim 1 or 2, characterized in that, The portion of the metal body extending into the plastic part is provided with an inserting protrusion, which is embedded in the plastic part.

4. The throttle valve structure as described in claim 1, characterized in that, The metal body has a first assembly groove and a second assembly groove respectively on its opposite sides. The first assembly groove and the second assembly groove both extend circumferentially along the metal body and communicate with the peripheral sidewall of the metal body. The metal body forms a protrusion between the first assembly groove and the second assembly groove. The first assembly groove and the second assembly groove are symmetrically arranged with the protrusion as the center. The plastic part and the protrusion are interlocked and fill the first assembly groove and the second assembly groove.

5. The throttle valve structure as described in claim 1, characterized in that, The number of plastic parts is two. The metal body has two fixing protrusions on its periphery. The two fixing protrusions extend radially along the metal body and are symmetrically arranged with the metal body as the center. The two fixing protrusions are located between the two plastic parts. The two ends of each plastic part are respectively connected to the two fixing protrusions. The throttle valve structure also includes two clamping members. The two clamping members extend radially along the metal body and are rotatably connected to the throttle valve body. The metal body and the two fixing protrusions are clamped between the two clamping members.

6. The throttle valve structure as described in claim 1, characterized in that, The thickness of the portion of the plastic part away from the metal body gradually decreases in the direction away from the metal body.

7. The throttle valve structure as described in claim 1, characterized in that, The inner wall of the air intake channel, corresponding to the portion of the plastic part, has a hydrophobic rough surface.

8. The throttle valve structure as described in claim 1, characterized in that, The inner wall of the air intake channel is provided with an annular protrusion, and the throttle valve blade is rotatably disposed within the annular protrusion.

9. An engine assembly, characterized in that, Includes the throttle valve structure as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, Includes the engine assembly as described in claim 9.

Images