Electronic throttle body

Abstract

An electronic throttle body includes a valve body, a cover, a DC motor, a drive unit, a throttle shaft, and a throttle plate. The DC motor is fixedly mounted on the valve body, the cover is fitted onto the valve body, and the drive unit is disposed between the lower surface of the cover and the valve body. The drive unit includes a DC motor gear, an intermediate gear, and a reset gear on the DC motor. The DC motor gear meshes with the intermediate gear, and the intermediate gear meshes with the reset gear. The throttle shaft is fixedly connected to the reset gear. The throttle plate is fixedly connected to the throttle shaft. The reset gear includes a reset gear support, and a reset spring is sleeved on the throttle shaft, with the reset spring hanging on the reset gear support. This invention solves the problems of existing throttle body connectors often having poor contact with the DC motor pins and the reset gear support being prone to breakage.

Description

Technical Field

[0001] This invention relates to the field of automotive engine intake systems, and in particular to an electronic throttle body. Background Technology

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

[0003] In existing technologies, the connector plate of the throttle body often does not make firm contact with the DC motor pin, and the reset gear support is prone to breakage. Summary of the Invention

[0004] The purpose of this invention is to provide an electronic throttle body that solves the problems of poor contact between the connector plate and the DC motor pin in existing throttle bodies, and the easy breakage of the reset gear support.

[0005] To solve the above problems, the present invention is achieved through the following technical solution:

[0006] An electronic throttle body includes a valve body, a cover, a DC motor, a drive unit, a throttle shaft, and a throttle plate;

[0007] A DC motor is fixedly mounted on the valve body, and a cover is placed on the valve body. A drive device is installed between the lower surface of the cover and the valve body.

[0008] The drive unit includes a DC motor gear, an intermediate gear, and a reset gear on a DC motor. The DC motor gear meshes with the intermediate gear, and the intermediate gear meshes with the reset gear.

[0009] The throttle shaft is fixedly connected to the reset gear; the throttle plate is fixedly connected to the throttle shaft.

[0010] The reset gear includes a reset gear support foot, and the throttle valve shaft sleeve is equipped with a reset spring, which is hung on the reset gear support foot.

[0011] The DC motor is equipped with a DC motor pin, and the lower surface of the cover is equipped with a connector, which contains a connector plate. The lower surface of the cover is also equipped with a cover pin, which is located in the connector and is electrically connected to the connector plate. The DC motor pin is inserted into the connector plate, thereby electrically connecting with the cover pin.

[0012] The reset gear is also equipped with a reset gear insert.

[0013] The cover and valve body are connected by snap-fit.

[0014] The reset gear insert includes a reset gear insert support, and the reset gear insert is a metal insert.

[0015] The reset gear insert is injection molded as a single unit with the reset gear, and the reset gear insert foot is injection molded inside the reset gear foot.

[0016] An upper spring seat and a lower spring seat are mounted on the throttle body shaft, and a return spring is mounted between the upper spring seat and the lower spring seat.

[0017] It is also equipped with a magnet, which is fixed to the reset gear.

[0018] The cover and the cover pin are injection molded as a single unit.

[0019] The connector includes a connector slot, the connector has a hook, and the DC motor pin is inserted into the connector slot and held by the hook.

[0020] The connector piece is stamped.

[0021] The DC motor is installed in the valve body and is connected to the valve body by the DC motor screw.

[0022] Compared with the prior art, the beneficial effects of the present invention are that the connector has a hook, which is conducive to fixing the connector, and the reset gear contains a metal insert, which is not easy to break. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0025] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0026] Figure 4 This is a schematic diagram of the structure of the cover and the insert of the present invention. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the structure of the cover and the insert of the present invention. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the DC motor structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the connection between the cover and the DC motor of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure connecting the cover of the present invention with the DC motor and the throttle shaft;

[0031] Figure 9This is a schematic diagram of the reset gear insert structure of the present invention;

[0032] Figure 10 This is a schematic diagram of the reset gear structure of the present invention;

[0033] Figure 11 This is a schematic diagram of the connector structure of the present invention. Figure 1 ;

[0034] Figure 12 This is a schematic diagram of the connector structure of the present invention. Figure 2 . Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings. The drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent.

[0036] To simplify the description of this embodiment, some components that are well-known to those skilled in the art but are not related to the main content of this invention may be omitted in the accompanying drawings or description. Additionally, for ease of description, some components in the drawings may be omitted, enlarged, or reduced, but these do not represent the actual product dimensions or the complete structure.

[0037] This invention discloses an electronic throttle body, such as Figure 1-12 As shown, it includes a valve body 15, a cover 5, a DC motor 1, a drive unit, a throttle shaft 13, and a throttle plate 17.

[0038] like Figure 1-5 As shown, the DC motor 1 is fixedly mounted on the valve body 15 by DC motor screws 3, and the cover 5 is fitted onto the valve body 15. A drive device is disposed between the lower surface of the cover 5 and the valve body 15. Preferably, the cover 5 and the valve body 15 are connected by a snap-fit ​​6.

[0039] Furthermore, such as Figure 2 As shown, the drive device includes a DC motor gear 2, an intermediate gear 8, and a reset gear 9 on a DC motor 1. The DC motor gear 2 and the intermediate gear 8 mesh, and the intermediate gear 8 meshes with the reset gear 9.

[0040] like Figure 3 , Figure 8 As shown, the throttle shaft 13 is fixedly connected to the reset gear 9; the throttle plate 17 is fixedly connected to the throttle shaft 13 by the throttle plate screw 18.

[0041] like Figure 9 , Figure 10 As shown, the reset gear 9 includes a reset gear support 91, and the throttle shaft 13 is fitted with a reset spring 11, which is hung on the reset gear support 91.

[0042] Furthermore, the reset gear 9 is also provided with a reset gear insert 92, which includes a reset gear insert support 921. The reset gear insert 92 is a metal insert. The reset gear insert 92 and the reset gear 9 are injection molded as one piece, and the reset gear insert support 921 is injection molded inside the reset gear support 91. In this way, the reset gear support 91 is not easy to break.

[0043] Preferably, an upper spring seat 10 and a lower spring seat 12 are mounted on the throttle shaft 13, and a return spring 11 is mounted between the upper spring seat 10 and the lower spring seat 12.

[0044] like Figure 6 , Figure 7 As shown, the DC motor 1 is equipped with a DC motor pin 101, and the lower surface of the cover 5 is provided with a connector, inside which a connector plate 4 is provided. The lower surface of the cover 5 is also provided with a cover pin 51, which is disposed in the connector and electrically connected to the connector plate 4. The DC motor pin 101 is inserted into the connector plate 4, thereby electrically connecting to the cover pin 51. This connects the DC motor 1 to an external power supply. The cover 5 and the cover pin 51 are injection molded as a single unit.

[0045] Preferably, such as Figure 11 , Figure 12 As shown, the connector 4 includes a connector slot 42, and the connector 4 has a hook 41. The DC motor pin 101 is inserted into the connector slot 42 and held by the hook 41, resulting in a more secure contact.

[0046] A magnet 7 is also provided, which is glued to the reset gear 9.

[0047] When the present invention is in use, the DC motor 1 is working, and the motor gear 2, intermediate gear 8 and reset gear 9 drive the throttle shaft 13 to rotate. The throttle shaft 13 then drives the throttle plate 17 to rotate. The intake air volume of the throttle body is adjusted by the rotation of the throttle plate 17. When the power is off, the reset spring 11 drives the reset gear 9 to drive the throttle shaft 13 to rotate and reset the throttle plate 17.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. All equivalent changes and modifications made within the scope of the claims of this invention should be considered within the technical scope of this invention.

Claims

1. An electronic throttle body, comprising a valve body (15), a cover (5), a DC motor (1), a driving device, a throttle shaft (13) and a throttle plate (17), characterized in that: the DC motor (1) is fixedly arranged on the valve body (15), and the cover (5) covers the valve body (15), and the driving device is arranged between the lower surface of the cover (5) and the valve body (15); the driving device comprises a DC motor gear (2) on the DC motor (1), an intermediate gear (8) and a reset gear (9), the DC motor gear (2) and the intermediate gear (8) are engaged, and the intermediate gear (8) and the reset gear (9) are engaged; the throttle shaft (13) is fixedly connected with the reset gear (9), and the throttle plate (17) is fixedly connected with the throttle shaft (13); the reset gear (9) comprises a reset gear leg (91), the throttle shaft (13) is sleeved with a reset spring (11), and the reset spring (11) is hung on the reset gear leg (91); the DC motor (1) is provided with a DC motor pin (101), the lower surface of the cover (5) is provided with a plug-in seat, the plug-in seat is provided with a plug-in piece (4), the lower surface of the cover (5) is further provided with a cover pin (51), the cover pin (51) is arranged in the plug-in seat and is electrically connected with the plug-in piece (4); the DC motor pin (101) is inserted into the plug-in piece (4) to be electrically connected with the cover pin (51); the cover (5) and the cover pin (51) are integrally injection molded; the reset gear (9) is further provided with a reset gear insert (92); the reset gear insert (92) comprises a reset gear insert leg (921), the reset gear insert (92) is a metal insert; the reset gear insert (92) is integrally injection molded with the reset gear (9), and the reset gear insert leg (921) is injection molded in the reset gear leg (91).

2. The electronic throttle body of claim 1, wherein: The cover (5) and the valve body (15) are connected by a buckle (6).

3. The electronic throttle body of claim 1, wherein: The throttle shaft (13) is sleeved with an upper spring seat (10) and a lower spring seat (12), and the reset spring (11) is sleeved between the upper spring seat (10) and the lower spring seat (12).

4. The electronic throttle body of claim 1, wherein: A magnet (7) is further arranged and fixed on the reset gear (9).

5. The electronic throttle body of claim 1, wherein: The plug-in piece (4) comprises a plug-in piece slot (42), the plug-in piece (4) is provided with a hook (41), the DC motor pin (101) is inserted into the plug-in piece slot (42) and clamped by the hook (41).

6. The electronic throttle body of claim 5, wherein: The plug-in piece (4) is stamped.

7. The electronic throttle body of claim 1, wherein: The DC motor (1) is installed in the valve body (15), and the DC motor (1) is connected with the valve body (15) by a DC motor screw (3).

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