A throttle valve return gear assembly and a throttle valve return mechanism

Abstract

The utility model provides a kind of throttle valve reset gear assembly and throttle valve reset gear assembly.The throttle valve reset gear assembly includes reset gear and magnet;Magnet is pressed in and installed in the magnet installation clamping groove being set at the top end of reset gear;The throttle valve reset gear assembly includes the throttle valve reset gear assembly, reset spring, throttle valve shaft, throttle valve piece and valve body;Reset spring is sleeved in the outer ring of reset gear sleeve.The utility model, the connecting structure of magnet and reset gear is relatively simple, and assembly operation is simple and convenient, can improve installation efficiency, reduce processing and manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile engine intake systems, and in particular to a throttle body reset gear assembly and a throttle body reset mechanism. Background Technology

[0002] The throttle body is an important component of a car engine. For example, the electronic throttle body uses an electronic throttle control system, which helps to improve the smoothness and economy of the car's driving and can effectively reduce emissions. At the same time, the system responds quickly and can achieve satisfactory handling performance.

[0003] In existing technologies, magnets are often installed in the electronic throttle body. The core function of these magnets is to work with sensors to provide feedback on the throttle position signal.

[0004] However, the existing method of magnet installation involves first injection molding the magnet insert to form a magnet injection-molded insert (i.e., a composite structural component in which a prefabricated magnet is used as an insert and integrally molded with a plastic substrate through an injection molding process), such as... Figure 13 As shown; then the magnet injection-molded insert is snapped onto the top of the reset gear. Specifically, the lower part of the magnet injection-molded insert has a claw; at the same time, the top of the reset gear has a pre-reserved installation limiting groove for the magnet injection-molded insert, and the radial inner wall of the installation limiting groove has several slots that match the claw. During installation, the claw is snapped into the slot, so that the magnet injection-molded insert is snapped into the top of the reset gear, thereby realizing the assembly and fixation of the magnet. Figure 12 The image shown is an exploded view of an existing electronic throttle valve.

[0005] Under the above structure and installation method, the assembly of magnets requires the use of insert injection molding process and claw structure, which is relatively complex and time-consuming.

[0006] Therefore, how to make the assembly and installation of magnets simpler has become a technical problem that needs to be solved. Utility Model Content

[0007] The purpose of this utility model is to provide a throttle body reset gear assembly and a throttle body reset mechanism, which mainly solves the technical problems of complex magnet assembly structure and time-consuming processing in the prior art.

[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0009] A throttle reset gear assembly includes a reset gear and a magnet; the magnet is press-fitted into a magnet mounting slot located at the top of the reset gear.

[0010] Furthermore, the slot of the magnet mounting slot is provided with a number of spaced oblique guide surfaces in the radial direction; with the central axis side of the magnet mounting slot as the inside, the height of the oblique guide surfaces decreases sequentially from the outside to the inside.

[0011] Furthermore, the bottom of the magnet mounting slot has an adhesive groove filled with adhesive; the adhesive groove is connected to the upper opening of the magnet mounting slot; the wall of the magnet mounting slot is also fixed to the magnet with adhesive.

[0012] Furthermore, it also includes a reset gear sleeve and a reset gear baffle;

[0013] The reset gear, reset gear sleeve, and reset gear baffle are injection molded as a single unit.

[0014] Furthermore, it includes the aforementioned throttle reset gear assembly, reset spring, throttle shaft, throttle plate, and valve body; the reset spring is sleeved on the outer ring of the reset gear sleeve.

[0015] Furthermore, the return spring is a waist drum spring.

[0016] Furthermore, a valve body stop is provided inside the valve body;

[0017] The reset gear is provided with a reset gear support foot. The two sides of the reset gear support foot are the first side side and the second side side, respectively. The first side side and the second side side of the reset gear support foot have the same shape and are arranged symmetrically.

[0018] The reset spring includes a first torsion arm and a second torsion arm. When the throttle plate is in the emergency position, the first torsion arm simultaneously contacts the first side of the reset gear support foot and one side of the valve body block, and the second torsion arm simultaneously contacts the second side of the reset gear support foot and the other side of the valve body block.

[0019] Furthermore, the throttle shaft is connected to the reset gear by welding, and the throttle plate is connected to the throttle shaft by throttle plate screws.

[0020] In view of the above technical features, the present invention has the following beneficial effects:

[0021] 1. By press-fitting the magnet into the slot at the top of the injection-molded reset gear, there is no need for additional connection operations between the magnet and the reset gear, nor is there a need for the processing step of injection molding the magnet insert into a magnet injection insert. This makes the installation of the magnet simpler, reduces the number of parts, and is more conducive to the production and manufacturing of the throttle body.

[0022] 2. In this utility model, the return spring is a drum-shaped spring; the drum-shaped spring is a special spring that is thicker in the middle and thinner at both ends. The design of the thicker middle structure concentrates the stress in the middle section when the spring is compressed or stretched, while the force on the ends is more gradual, reducing local wear and extending the service life of the spring. The design of the thinner ends facilitates precise installation and positioning, and is less prone to displacement or tilting during operation, making it especially suitable for high-frequency vibration scenarios.

[0023] 3. In the throttle reset gear assembly of this utility model, the reset gear, reset gear sleeve, and reset gear baffle are injection molded as a single unit. The reset spring is installed simply by mounting it onto the reset gear sleeve. Because the reset gear, reset gear sleeve, and reset gear baffle are injection molded as a single unit, there is no need for a separate connection operation between the reset gear and the reset gear sleeve. The reset gear sleeve performs the function and role of the existing spring seat, making the installation of the throttle reset gear assembly simpler, reducing the number of parts, and facilitating throttle body manufacturing. Furthermore, eliminating the need for a separate connection operation between the reset gear sleeve and the reset gear baffle further reduces the number of parts, further facilitating throttle body manufacturing and improving installation convenience. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram (including magnet) of the throttle reset gear assembly in specific embodiment 1.

[0025] Figure 2 This is a three-dimensional structural diagram of the throttle reset gear assembly after the magnet is removed in specific embodiment 1.

[0026] Figure 3 This is a cross-sectional view (including the magnet) of the throttle reset gear assembly in specific embodiment 1.

[0027] Figure 4 This is a cross-sectional view (excluding magnets) of the throttle reset gear assembly in specific embodiment 1.

[0028] Figure 5 This is a top view of the throttle reset gear assembly after the magnet has been removed in specific embodiment 1.

[0029] Figure 6 This is a schematic diagram of the throttle reset mechanism in specific embodiment 1. Figure 1 (Includes throttle body shaft, throttle plate and return spring).

[0030] Figure 7 This is a schematic diagram of the throttle reset mechanism in specific embodiment 1. Figure 2 (Including throttle body shaft and throttle plate).

[0031] Figure 8This is a schematic diagram of the throttle reset mechanism in specific embodiment 1. Figure 3 (Including throttle body shaft and throttle plate).

[0032] Figure 9 This is a schematic diagram of the throttle reset mechanism in specific embodiment 1. Figure 4 (Including throttle body shaft and throttle plate).

[0033] Figure 10 This is a schematic diagram showing the relative positions of the throttle body and valve plate in the emergency position.

[0034] Figure 11 This is a cross-sectional view of a throttle valve containing the reset mechanism described in Embodiment 1 (showing the valve body stop, reset gear support, first torsion arm, and second torsion arm).

[0035] Figure 12 This is an exploded view of the throttle body in the prior art (showing the upper spring seat, lower spring seat, and magnet injection-molded insert).

[0036] Figure 13 This is a schematic diagram of the structure of a magnet injection molded insert in the prior art.

[0037] In the diagram: 1-Reset gear, 2-Second torsion arm, 3-Reset gear baffle, 4-Throttle plate, 5-Throttle plate screw, 6-Throttle shaft, 7-Reset gear sleeve, 8-First torsion arm, 9-Reset spring, 10-Reset gear support, 11-First side of reset gear support, 12-Second side of reset gear support, 13-Valve body, 14-DC motor screw, 15-DC motor, 16-Valve body stop, 17-Magnet, 18-Magnet mounting slot, 181-Beveled guide surface, 182-Glue groove, 183-Longitudinal groove;

[0038] In the prior art: 20-upper spring seat, 21-reset spring, 22-lower spring seat, 23-reset gear, 24-magnet injection molded insert, 241-magnet, 242-claw. Detailed Implementation

[0039] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0040] This utility model provides a throttle body reset gear assembly and a throttle body reset mechanism. Figures 6 to 9This is a schematic diagram of the structure of the throttle body reset mechanism (the valve body is not shown in the diagram); correspondingly, the reset gear assembly in this throttle body reset mechanism is as follows: Figures 1 to 5 As shown.

[0041] like Figures 6 to 11 In this embodiment, the throttle reset mechanism includes a throttle reset gear assembly, a reset spring 9, a throttle shaft 6, a throttle plate 4, and a valve body 13.

[0042] See Figures 1 to 5 In this embodiment, the throttle reset gear assembly includes a reset gear 1 and a magnet 17; the magnet 17 is press-fitted into a magnet mounting slot 18 located at the top of the reset gear 1.

[0043] like Figure 2 As shown, the inner wall of the magnet mounting slot 18 has several radially spaced oblique guide surfaces 181. With the central axis of the magnet mounting slot 18 as the inner side, the height of the oblique guide surfaces 181 decreases sequentially from the outside to the inside. That is, the closer to the inner side of the magnet mounting slot 18, the lower the height of the oblique guide surfaces 181. Thus, during the magnet installation operation, the lower end of the magnet 17 can move downwards along the oblique guide surfaces 181 and be smoothly pressed into the lower magnet mounting slot 18. The oblique guide surfaces 181 serve to guide the magnet downwards during the pressing process.

[0044] Preferably, such as Figure 1 As shown, in this embodiment, four beveled guide surfaces 181 of the same size are evenly distributed radially in the slot of the magnet mounting slot 18. The four beveled guide surfaces 181 are evenly spaced radially. The four guide surfaces can form symmetrical contact points, which can balance the pressing force and play a precise guiding role in the downward movement of the magnet 17, thus preventing the magnet 17 from shifting during the pressing process.

[0045] In this embodiment, the magnet is connected to the reset gear by an interference fit. After connection, the magnet 17 is interference-fitted into the magnet mounting slot 18. Unlike the injection-molded insert and claw connection structure in the prior art, this embodiment does not require a slot structure matching the claw on the reset gear 1, nor does it require pre-molding the magnet into a magnet injection-molded insert using an injection molding process. This relatively reduces the number of processing steps and the processing difficulty, and can reduce processing costs and improve product manufacturing efficiency.

[0046] Preferably, such as Figures 3 to 5 As shown, in this embodiment, four glue grooves 182 for filling glue are radially formed at the bottom of the magnet mounting slot 18. Each glue groove 182 communicates with the upper opening of the magnet mounting slot 18 via a longitudinal groove 183 on the side wall of the magnet mounting slot 18. The upper end of the longitudinal groove 183 is open, and the lower end of the longitudinal groove 183 communicates with the glue groove 182. Figure 3 As shown, in the installed state, the glue groove 182 is located below the magnet 17, while the longitudinal groove 183 is located between the side wall of the magnet 17 and the side wall of the magnet mounting slot 18. Before pressing the magnet 17 into the magnet mounting slot 18, glue can be pre-filled into the glue groove 182 (so that the glue overflows the groove opening). Then, the magnet 17 is pressed down into the magnet mounting slot 18. As the magnet 17 is pressed down, some of the excess glue can flow upward along the longitudinal groove 183 towards the upper opening of the glue groove 182, finally filling the space between the side wall of the magnet 17 and the side wall of the magnet mounting slot 18. If there is too much glue, causing it to overflow from the upper opening of the glue groove 182, the overflowing part can be wiped away. After the glue is fixed, the glue groove 182 is full of glue, and the groove wall of the magnet mounting slot 18 and the magnet 17 are further fixed by the glue, thus further enhancing the connection strength between the magnet 17 and the gear 1. In the above structure, the setting of the glue groove 182 is beneficial to reserving space for glue filling during the assembly process.

[0047] Preferably, see appendix. Figures 1 to 9 In this embodiment, the reset gear 1, the reset gear sleeve 7, and the reset gear baffle 3 are injection molded as a single unit. In this embodiment, the reset spring 9 is sleeved on the outer ring of the reset gear sleeve 7 and located between the reset gear 1 and the reset gear baffle 3, with the lower end of the reset spring 9 abutting against the upper end of the reset gear baffle 3.

[0048] In existing technology, the throttle valve often contains a spring seat (e.g.) Figure 12 The upper spring seat 20 and the lower spring seat 22 are shown in the figure. The return spring 21 is mounted on the spring seat (which is spliced ​​together from the upper spring seat 20 and the lower spring seat 22). The return gear 23 is connected to the upper spring seat 20 to form a return gear assembly. The number of parts is large and the installation is complicated, which is not conducive to production and manufacturing.

[0049] Different from Figure 12 In this embodiment, the reset gear 1, reset gear sleeve 7, and reset gear baffle 3 are injection molded as a single unit. Installation is completed simply by fitting the reset spring 9 onto the reset gear sleeve 7. Because the reset gear 1, reset gear sleeve 7, and reset gear baffle 3 are injection molded as a single unit, there is no need for a connection operation between the reset gear 1 and the reset gear sleeve 7. The reset gear sleeve 7 performs the function and role of the existing spring seat, making the installation of the throttle valve simpler, reducing the number of parts, and facilitating throttle valve manufacturing. Furthermore, eliminating the need for a connection operation between the reset gear sleeve 7 and the reset gear baffle 3 further reduces the number of parts, further facilitating throttle valve manufacturing and improving the ease of throttle valve installation.

[0050] Preferably, in this embodiment, the return spring 9 used is drum-shaped, a drum spring. The design of the drum spring with a thicker middle section concentrates stress in the middle section when the spring is compressed or stretched, resulting in more even force distribution at both ends, reducing local wear and extending the service life of the spring. The thinner design at both ends facilitates precise installation and positioning, and is less prone to displacement or tilting during operation, making it particularly suitable for high-frequency vibration scenarios.

[0051] Preferably, the valve body 13 is provided with a valve body stop 16; the throttle shaft 6 is connected to the reset gear 1 by welding, and the throttle plate 4 is connected to the throttle shaft 6 by the throttle plate screw 5.

[0052] The reset gear 1 is provided with a reset gear support 10. The two sides of the reset gear support 10 are the first side 11 and the second side 12 of the reset gear support, respectively. The first side 11 and the second side 12 of the reset gear support have the same shape and are arranged symmetrically.

[0053] like Figure 11 The figure shown is a cross-sectional view of a throttle body containing the throttle body reset mechanism described in Embodiment 1. This throttle body includes a DC motor 15 and a valve body 13. The DC motor 15 is mounted in the valve body 13 and is connected to the valve body 13 via a DC motor screw 14.

[0054] The return spring 9 includes a first torsion arm 8 and a second torsion arm 2, which are used when the throttle plate 4 is in the emergency position (e.g.) Figure 10 As shown), Figure 11 As shown, the first torsion arm 8 is in contact with one side of the first side 11 of the reset gear support and one side of the valve body stop 16, and the second torsion arm 2 is in contact with the other side of the second side 12 of the reset gear support and the other side of the valve body stop 16.

[0055] When the throttle is in use, the DC motor 15 drives the reset gear 1 to rotate, which in turn drives the throttle shaft 6 to rotate. The throttle shaft 6 then drives the throttle plate 4 to rotate, thus adjusting the intake air volume of the throttle body. When the DC motor 15 is de-energized, the reset spring 9 retracts, causing the reset gear 1 to reset and rotate, thereby returning the throttle plate 4 to its emergency position.

[0056] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0057] 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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A throttle body reset gear assembly, characterized in that: It includes a reset gear (1) and a magnet (17); the magnet (17) is press-fitted into a magnet mounting slot (18) located at the top of the reset gear (1).

2. The throttle reset gear assembly according to claim 1, characterized in that: The slot of the magnet mounting slot (18) is provided with a number of spaced oblique guide surfaces (181) in the radial direction. With the central axis side of the magnet mounting slot (18) as the inside, the height of the oblique guide surface (181) decreases sequentially from the outside to the inside.

3. A throttle reset gear assembly according to claim 2, characterized in that: The bottom of the magnet mounting slot (18) has an adhesive groove (182) filled with adhesive; the adhesive groove (182) is connected to the upper opening of the magnet mounting slot (18); the wall of the magnet mounting slot (18) is also fixed to the magnet (17) with adhesive.

4. A throttle reset gear assembly according to claim 3, characterized in that: It also includes a reset gear sleeve (7) and a reset gear baffle (3); The reset gear (1), reset gear sleeve (7) and reset gear baffle (3) are injection molded as a single unit.

5. A throttle valve reset mechanism, characterized in that: Includes the throttle reset gear assembly, reset spring (9), throttle shaft (6), throttle plate (4) and valve body (13) as described in any one of claims 1-4; The reset spring (9) is sleeved on the outer ring of the reset gear sleeve (7).

6. A throttle valve reset mechanism according to claim 5, characterized in that: The reset spring (9) is a waist drum spring.

7. A throttle valve reset mechanism according to claim 6, characterized in that: The valve body (13) is provided with a valve body stop (16). The reset gear (1) is provided with a reset gear support (10). The two sides of the reset gear support (10) are the first side (11) and the second side (12) of the reset gear support, respectively. The first side (11) and the second side (12) of the reset gear support have the same shape and are arranged symmetrically. The reset spring (9) includes a first torsion arm (8) and a second torsion arm (2). When the throttle plate (4) is in the emergency position, the first torsion arm (8) simultaneously contacts the first side (11) of the reset gear support foot and one side of the valve body block (16), and the second torsion arm (2) simultaneously contacts the second side (12) of the reset gear support foot and the other side of the valve body block (16).

8. A throttle valve reset mechanism according to claim 7, characterized in that: The throttle shaft (6) is connected to the reset gear (1) by welding, and the throttle plate (4) is connected to the throttle shaft (6) by the throttle plate screw (5).

Images