Throttle valve shell and throttle valve comprising same
By adopting a combination design of metal bushing and plastic shell, the problems of high weight and cost of throttle body are solved, achieving lightweighting and cost reduction of throttle body, while enhancing the bonding strength and preventing air leakage.
Patent Information
- Application Number
- CN202422654728.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The existing throttle body is relatively heavy, resulting in higher fuel consumption and higher production costs for vehicles.
The design employs a combination of a metal bushing and a plastic housing. The bushing is made of metal and the housing is made of plastic. Anti-movement structures are set on the contact surfaces to enhance the bonding strength, reduce overall weight and production costs.
It significantly reduces the weight of the throttle body by 40%, lowers production costs, improves bonding strength, prevents air leakage, and enhances fuel economy.
Smart Images
Figure CN223549346U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of engine technology. More specifically, this utility model relates to a throttle body and a throttle body including the throttle body. Background Technology
[0002] The throttle valve controls the amount of air entering the engine. It connects to the air filter at the top and the engine intake manifold at the bottom. Air from the air filter enters the engine intake manifold through the throttle valve and mixes with fuel to form a combustible mixture, which is then burned to generate power. By controlling the opening of the throttle valve, the amount of air entering the engine can be controlled, thereby achieving vehicle acceleration or deceleration.
[0003] Conventionally, a throttle body comprises a throttle body and an end cap fixed together, with a motor and gear transmission mechanism housed within the internal space formed by the throttle body and end cap. The throttle body includes an axial through-hole serving as an airflow passage, within which the throttle plate is received and fixed to the throttle shaft. The throttle shaft can rotate via the gear transmission mechanism under the drive of the motor, thereby rotating the throttle plate to open and close the airflow passage, i.e., controlling the throttle opening and thus controlling the amount of air entering the engine.
[0004] Throttle body housings are typically cast from a single piece of metal, making them heavy and costly to produce. This heavier throttle body results in heavier vehicles equipped with this type of throttle, which in turn leads to higher fuel consumption.
[0005] There is a need to improve the throttle body to enhance fuel economy and reduce production costs. Utility Model Content
[0006] This utility model aims to solve at least one aspect of the aforementioned problems existing in the prior art.
[0007] Therefore, this utility model proposes a throttle body housing, which includes an outer shell and a bushing. The bushing includes an annular portion and a first shaft hole portion and a second shaft hole portion extending outward from the annular portion in a diametrically opposed direction. The annular portion is used to receive the throttle plate of the throttle body, and the first and second shaft hole portions are used to receive the throttle shaft of the throttle body. The bushing is made of a metal material, and the outer shell is made of a plastic material and covers the outside of the bushing. Because plastic materials are lightweight and have low cost, this design can reduce the weight and production cost of the throttle body housing.
[0008] In a preferred embodiment, the outer surface of the bushing is provided with an anti-movement structure to prevent the bushing from moving relative to the housing. This allows for enhanced bonding strength between the housing and the bushing.
[0009] Preferably, a first anti-movement structure is provided on the outer surface of the annular portion.
[0010] Preferably, the first anti-movement structure includes at least one protruding portion that protrudes relative to the outer surface of the annular portion or at least one recessed portion that is recessed relative to the outer surface of the annular portion.
[0011] Preferably, the first anti-movement structure includes a plurality of protrusions or recesses, which are connected to each other circumferentially on the outer surface of the annular portion via connecting portions. In addition to allowing for enhanced bonding strength between the housing and the bushing, this also allows for prevention of air leakage through the gap formed between the housing and the bushing.
[0012] Preferably, the plurality of protrusions or recesses are evenly distributed circumferentially on the outer surface of the annular portion. This allows for improved stress distribution between the housing and the bushing and further enhances the bonding strength between them.
[0013] In a preferred embodiment, a second anti-movement structure is provided on the outer surface of the first shaft hole portion, and / or a third anti-movement structure is provided on the outer surface of the second shaft hole portion.
[0014] Preferably, the second anti-movement structure includes at least one annular groove recessed relative to the outer surface of the first shaft hole or at least one annular ridge protruding relative to the outer surface of the first shaft hole, and / or the third anti-movement structure includes at least one annular groove recessed relative to the outer surface of the second shaft hole or at least one annular ridge protruding relative to the outer surface of the second shaft hole.
[0015] Preferably, the second anti-movement structure includes a plurality of annular grooves or a plurality of annular ridges that are not connected to each other in the axial direction of the first shaft hole portion, and / or the third anti-movement structure includes a plurality of annular grooves or a plurality of annular ridges that are not connected to each other in the axial direction of the second shaft hole portion. In addition to allowing for enhanced bonding strength between the housing and the bushing, this also allows for preventing air leakage through the gap formed between the housing and the bushing.
[0016] This utility model also proposes a throttle valve, which includes a throttle valve shaft and a throttle valve plate fixed to the throttle valve shaft. The throttle valve also includes the aforementioned throttle valve housing. The throttle valve shaft is received in the first shaft hole portion and the second shaft hole portion, and the throttle valve plate is received in the annular portion. Attached Figure Description
[0017] The present invention will now be described in detail with reference to the accompanying drawings and through non-limiting embodiments, wherein:
[0018] Figure 1 This is a perspective view of a throttle body according to an exemplary embodiment of the present invention;
[0019] Figure 2 yes Figure 1 The diagram shows a longitudinal sectional view of a throttle body according to an exemplary embodiment of the present invention, including the throttle body.
[0020] Figure 3 yes Figure 2 A perspective view of the outer shell of the throttle body shown; and
[0021] Figure 4 yes Figure 2 The diagram shows a perspective view of the bushing of the throttle body.
[0022] The accompanying drawings are schematic only and are not necessarily drawn to scale. They only show those parts necessary to illustrate the present invention, while other parts may be omitted or simply mentioned. The present invention may include other parts or components besides those shown in the drawings. Detailed Implementation
[0023] In the following description, numerous specific details are set forth to enable those skilled in the art to gain a more complete understanding of the present invention. However, it will be apparent to those skilled in the art that implementations of the present invention may not include some of these specific details. Furthermore, it should be understood that the present invention is not limited to the specific embodiments described. Rather, the present invention can be conceived to be practiced with any combination of the following features and elements, regardless of whether they relate to different embodiments. Therefore, the following features, embodiments, and advantages are for illustrative purposes only and should not be construed as elements or limitations of the claims unless expressly set forth in the claims.
[0024] Figure 1 A throttle valve 100 according to an exemplary embodiment of the present invention is shown in perspective. Figure 1 As shown, the throttle body 100 includes a throttle body 1 and an end cap 2 according to an exemplary embodiment of the present invention, the throttle body 1 and the end cap 2 being fixed together. A motor and a gear transmission mechanism (not shown) are housed within the internal space formed by the throttle body 1 and the end cap 2. The throttle body 1 includes an axial through-hole 3 serving as an airflow passage and a radially extending throttle shaft hole 4. A throttle shaft 5 is received in the throttle shaft hole 4 and is rotatable via the gear transmission mechanism under the drive of the motor. A throttle plate 6 is received in the axial through-hole 3 and fixed to the throttle shaft 5, thereby being rotatable under the drive of the motor to open and close the airflow passage, thereby controlling the amount of air entering the engine.
[0025] This utility model proposes a novel throttle body 1. Figure 2 A longitudinal sectional view of a throttle body 1, showing an exemplary embodiment of the present invention, is shown. The throttle body 1 includes an outer shell 10 and a bushing 20.
[0026] like Figure 4 As shown, the bushing 20 includes an annular portion 21 and a first shaft hole portion 22 and a second shaft hole portion 23 extending outward from the annular portion 21 in a diametrically opposed manner. The annular portion 21 is used to receive the throttle plate 6. The first shaft hole portion 22 and the second shaft hole portion 23 are formed therein with the aforementioned throttle shaft hole 4 for receiving the throttle shaft 5.
[0027] The bushing 20 is made of a metal material, such as aluminum alloy commonly used in the art, so as not to reduce the service life and performance of the throttle body 100. The outer shell 10 is made of a plastic material and covers the bushing 20. For example, in manufacturing the throttle body 1, the bushing 20 is first placed in a mold, then molten plastic is poured into the mold, and after the plastic solidifies to form the outer shell 10, a one-piece throttle body 1 is formed. By using a plastic material to manufacture the outer shell 10, the weight of the entire throttle body 100 can be significantly reduced, advantageously by up to 40%. Furthermore, the reduced use of metal material also reduces production costs.
[0028] To enhance the bonding strength between the housing 10 and the bushing 20, it is preferable to provide an anti-movement structure on the outer surface of the bushing 20 to prevent movement of the bushing 20 relative to the housing 10. Figure 4 In the exemplary embodiment of the bushing 20 shown, a first anti-movement structure 24 is provided on the outer surface of the annular portion 21, a second anti-movement structure 25 is provided on the outer surface of the first shaft hole portion 22, and a third anti-movement structure 26 is provided on the outer surface of the second shaft hole portion 23. It should be understood that only one or two of these anti-movement structures may be provided.
[0029] exist Figure 4 In the exemplary embodiment shown, the first anti-movement structure 24 includes a plurality of protrusions 27 that protrude relative to the outer surface of the annular portion 21. During the manufacturing process of the throttle body 1, the protrusions 27 are embedded in the plastic material forming the outer shell 10, thereby enhancing the bonding strength between the outer shell 10 and the bushing 20.
[0030] Preferably, these protrusions 27 are connected to each other circumferentially on the outer surface of the annular portion 21 via connecting portions 27'. This also allows air leakage to be prevented through the gap formed between the housing 10 and the bushing 20, which may occur when the temperature of the throttle valve 100 rises, causing different thermal expansion between the housing 10 and the bushing 20. More preferably, these protrusions 27 are evenly distributed circumferentially on the outer surface of the annular portion 21. This allows for further enhancement of the bonding strength between the housing 10 and the bushing 20. The protrusions 27 shown in the figure are generally rectangular in shape.
[0031] Although Figure 4 The diagram shows the first anti-movement structure 24 including a protrusion 27; however, it should be understood that, alternatively, the first anti-movement structure 24 may also include a plurality of recesses that are recessed relative to the outer surface of the annular portion 21. During the manufacturing process of the throttle body 1, the plastic material forming the outer shell 10 can be embedded into these recesses, thereby enhancing the bonding strength between the outer shell 10 and the bushing 20.
[0032] It should also be understood that the number of protrusions 27 or recesses may be more or fewer than shown in the figures, or even only one protrusion 27 or recess may be provided. When multiple protrusions 27 or recesses are provided, preferably, the multiple protrusions 27 or recesses are connected to each other circumferentially on the outer surface of the annular portion 21; however, it should be understood that they may also not be connected. The protrusions 27 or recesses may take any suitable shape.
[0033] like Figure 4 As shown, the second anti-movement structure 25 includes a plurality of annular ridges 28 that protrude relative to the outer surface of the first shaft hole portion 22, and the third anti-movement structure 26 includes a plurality of annular grooves 29 that are recessed relative to the outer surface of the second shaft hole portion 23.
[0034] Preferably, the plurality of annular ridges 28 are not connected to each other axially in the first shaft hole portion 22, and the plurality of annular grooves 29 are not connected to each other axially in the second shaft hole portion 23. This arrangement not only enhances the bonding strength between the housing 10 and the bushing 20, but also prevents air leakage through the gap formed between the housing 10 and the bushing 20. The annular ridges 28 or annular grooves 29 shown in the figures have an arc-shaped cross-section, but it should be understood that they can take any suitable shape.
[0035] Figure 4 The second anti-movement structure 25 is shown to include an annular ridge 28, while the third anti-movement structure 26 includes an annular groove 29. However, it should be understood that either an annular ridge or an annular groove is feasible; for example, both the second anti-movement structure 25 and the third anti-movement structure 26 may include an annular ridge or an annular groove; or the second anti-movement structure 25 may include an annular groove, while the third anti-movement structure 26 may include an annular ridge.
[0036] Each annular ridge or annular groove shown in the figure is continuous, but it should be understood that they can also be discontinuous, i.e., broken. The number of annular ridges or annular grooves can be more or less than shown in the figure, or even only one annular ridge or annular groove may be provided. In the case of multiple annular ridges or annular grooves, preferably, the multiple annular ridges or annular grooves are not connected to each other axially in the first shaft hole portion 22 or the second shaft hole portion 23, so as to prevent air leakage through the gap formed between the housing 10 and the bushing 20; however, it should be understood that they can also be connected.
[0037] like Figure 3 As shown, since the housing 10 is made of plastic material covering the bushing 20, the inner wall of the housing 10 has a profile complementary to the outer surface of the bushing 20. For example, at positions corresponding to the protrusions 27 of the bushing 20, the inner wall of the housing 10 has a recessed structure 12; at positions corresponding to the annular ridges 28 of the bushing 20, the inner wall of the housing 10 has an annular groove 13; and at positions corresponding to the annular grooves 29 of the bushing 20, the inner wall of the housing 10 has an annular ridge 14. Conventionally, the housing 10 also includes a plurality of mounting holes 11 for connection to an air filter and an engine intake manifold.
[0038] While the present invention has been disclosed above with reference to preferred embodiments, it is not limited thereto. Any variations and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope defined in the claims.
Claims
1. A throttle body (1), characterized in that, The throttle housing (1) includes an outer shell (10) and a bushing (20). The bushing (20) includes an annular portion (21) and a first shaft hole portion (22) and a second shaft hole portion (23) extending outward from the annular portion (21) in the diametrical direction opposite to each other. The annular portion (21) is used to receive the throttle plate (6) of the throttle valve (100). The first shaft hole portion (22) and the second shaft hole portion (23) are used to receive the throttle shaft (5) of the throttle valve (100). The bushing (20) is made of metal material. The outer shell (10) is made of plastic material and covers the bushing (20). An anti-movement structure is provided on the outer surface of the bushing (20) to prevent the bushing (20) from moving relative to the outer shell (10).
2. The throttle body (1) according to claim 1, characterized in that, A first anti-movement structure (24) is provided on the outer surface of the annular portion (21).
3. The throttle body (1) according to claim 2, characterized in that, The first anti-movement structure (24) includes at least one protruding portion (27) that protrudes relative to the outer surface of the annular portion (21) or at least one recessed portion that is recessed relative to the outer surface of the annular portion (21).
4. The throttle body (1) according to claim 3, characterized in that, The first anti-movement structure (24) includes a plurality of protrusions (27) or a plurality of recesses, which are connected to each other in the circumferential direction of the outer surface of the annular portion (21) by a connecting portion.
5. The throttle body (1) according to claim 4, characterized in that, The plurality of protrusions (27) or the plurality of recesses are evenly distributed in the circumferential direction on the outer surface of the annular portion (21).
6. The throttle body (1) according to any one of claims 1 to 5, characterized in that, A second anti-movement structure (25) is provided on the outer surface of the first shaft hole portion (22), and / or a third anti-movement structure (26) is provided on the outer surface of the second shaft hole portion (23).
7. The throttle body (1) according to claim 6, characterized in that, The second anti-movement structure (25) includes at least one annular groove recessed relative to the outer surface of the first shaft hole portion (22) or at least one annular ridge protruding relative to the outer surface of the first shaft hole portion (22), and / or the third anti-movement structure (26) includes at least one annular groove recessed relative to the outer surface of the second shaft hole portion (23) or at least one annular ridge protruding relative to the outer surface of the second shaft hole portion (23).
8. The throttle body (1) according to claim 7, characterized in that, The second anti-movement structure (25) includes a plurality of annular grooves or a plurality of annular ridges that are not connected to each other in the axial direction of the first shaft hole portion (22), and / or the third anti-movement structure (26) includes a plurality of annular grooves or a plurality of annular ridges that are not connected to each other in the axial direction of the second shaft hole portion (23).
9. A throttle valve (100), the throttle valve (100) comprising a throttle valve shaft (5) and a throttle valve plate (6) fixed to the throttle valve shaft (5), characterized in that, The throttle valve (100) further includes a throttle valve housing (1) according to any one of claims 1 to 8, the throttle valve shaft (5) being received in the first shaft hole portion (22) and the second shaft hole portion (23), and the throttle valve plate (6) being received in the annular portion (21).