Electronic throttle body

Abstract

An electronic throttle valve body comprises a valve body, a cover, a direct current motor, a driving device, a throttle valve shaft and a throttle valve piece. The direct current motor is fixedly arranged on the valve body, the cover covers the valve body, and the driving device is arranged between the lower surface of the cover and the valve body; the driving device comprises a direct-current motor gear on the direct-current motor, an intermediate gear and a reset gear, the direct-current motor gear is meshed with the intermediate gear, and the intermediate gear is meshed with the reset gear; the throttle valve shaft is fixedly connected with the reset gear; the throttle valve sheet is fixedly connected with the throttle valve shaft; the reset gear comprises a reset gear supporting foot, the throttle valve shaft is sleeved with a reset spring, and the reset spring is hung on the reset gear supporting foot. The problems that an insertion piece of an existing throttle body is often not firmly contacted with a direct-current motor pin, and a reset gear supporting foot is prone to breakage are solved.

Description

Technical Field

[0001] The invention relates to the field of automobile engine air intake systems, in particular to an electronic throttle body. Background Art

[0002] The electronic throttle body is an important component of the automobile engine. The use of an electronic throttle control system helps to improve the stability and economy of the car's driving and can effectively reduce emission pollution. At the same time, the system responds quickly and can achieve satisfactory handling performance.

[0003] In the prior art, the connector of the throttle body often does not contact firmly with the DC motor pin, and the reset gear support leg is easy to break. Summary of the invention

[0004] The present invention aims to provide an electronic throttle body, aiming to solve the problems that the connector of the existing throttle body often has loose contact with the DC motor pin and the reset gear support leg is easy to break.

[0005] In order to solve the above problems, the present invention is achieved through the following technical solutions:

[0006] An electronic throttle body comprises a valve body, a cover, a DC motor, a driving device, a throttle shaft and a throttle plate;

[0007] The DC motor is fixedly arranged on the valve body, the cover is closed on the valve body, and a driving device is arranged between the lower surface of the cover and the valve body;

[0008] The driving device comprises a DC motor gear, an intermediate gear and a reset gear on the DC motor, the DC motor gear is meshed with the intermediate gear, and the intermediate gear is meshed 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 shaft sleeve is provided with a reset spring, and the reset spring is hung on the reset gear support foot;

[0011] The DC motor is provided with a DC motor pin, the lower surface of the cover is provided with a socket, a plug sheet is provided in the socket, and a cover pin is also provided on the lower surface of the cover, the cover pin is provided in the socket and is electrically connected with the plug sheet; the DC motor pin is inserted into the plug sheet, thereby being electrically connected with the cover pin;

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

[0013] The cover and the valve body are connected by snap fasteners.

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

[0015] The reset gear insert is integrally formed with the reset gear by injection molding, and the reset gear insert support foot is injection molded inside the reset gear support foot.

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

[0017] A magnet is also provided, and the magnet is fixed on the reset gear.

[0018] The cover and the cover pin are injection molded as one piece.

[0019] The plug-in piece comprises a plug-in piece slot, the plug-in piece is provided with a bent hook, and the DC motor pin is inserted into the plug-in piece slot and clamped by the bent hook.

[0020] The connector piece is formed by punching.

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

[0022] Compared with the prior art, the present invention has the beneficial effects that the connector has a hook, which is conducive to the fixation of the connector, and the reset gear includes a metal insert, which is not easy to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 ;

[0024] Figure 2 The structure of the present invention is schematically shown in FIG. Figure 2 ;

[0025] Figure 3 The structure of the present invention is schematically shown in FIG. Figure 3 ;

[0026] Figure 4 The structure diagram of the cover and the connector of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 5 The structure diagram of the cover and the connector of the present invention is shown in FIG. Figure 2 ;

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

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

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

[0031] Fig. 9It is a schematic diagram of the structure of the reset gear insert of the present invention;

[0032] Fig.10 It is a schematic diagram of the reset gear structure of the present invention;

[0033] Fig.11 The structure of the connector of the present invention is shown in FIG. Figure 1 ;

[0034] Fig.12 The structure of the connector of the present invention is shown in FIG. Figure 2 . DETAILED DESCRIPTION

[0035] The present invention is further described below in conjunction with the accompanying drawings, which are only used for exemplary description and cannot be understood as limiting the present invention.

[0036] In order to more concisely describe the present embodiment, some parts known to those skilled in the art but not related to the main content of the present invention are omitted in the drawings or descriptions. In addition, for the convenience of description, some parts in the drawings are omitted, enlarged or reduced, but they do not represent the size or entire structure of the actual product.

[0037] The present 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 device, a throttle shaft 13 and a throttle plate 17.

[0038] like Figure 1-5 As shown, the DC motor 1 is fixedly arranged on the valve body 15 by means of the DC motor screws 3, the cover 5 is covered on the valve body 15, and a driving device is arranged 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 means of a buckle 6.

[0039] Furthermore, if Figure 2 As shown, the driving device includes a DC motor gear 2, an intermediate gear 8 and a reset gear 9 on the DC motor 1. The DC motor gear 2 is meshed with the intermediate gear 8, and the intermediate gear 8 is meshed 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 Fig. 9 , Fig.10 As shown, the reset gear 9 includes a reset gear support foot 91 , and the throttle shaft 13 is sleeved with a reset spring 11 , which is hung on the reset gear support foot 91 .

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

[0043] Preferably, an upper spring seat 10 and a lower spring seat 12 are sleeved on the throttle shaft 13 , and the return spring 11 is sleeved 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 provided with a DC motor pin 101, the lower surface of the cover 5 is provided with a socket, the socket is provided with a plug sheet 4, and the lower surface of the cover 5 is also provided with a cover pin 51, which is provided in the socket and electrically connected to the plug sheet 4; the DC motor pin 101 is inserted into the plug sheet 4, thereby being electrically connected to the cover pin 51. In this way, the DC motor 1 is connected to an external power supply. The cover 5 and the cover pin 51 are injection molded as one piece.

[0045] Preferably, if Fig.11 , Fig.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 clamped by the hook 41, so that the contact is more secure.

[0046] A magnet 7 is also provided, and the magnet 7 is fixed on the reset gear 9 by adhesive bonding.

[0047] When the present invention is in use, when the DC motor 1 is working, the motor gear 2, the intermediate gear 8, and the reset gear 9 are driven by gears, so that the reset gear 9 drives the throttle shaft 13 to rotate, and the throttle shaft 13 drives the throttle plate 17 to rotate. The throttle body air intake 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 to reset the throttle plate 17.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made according to the content of the patent application scope of the present invention should be within the technical scope of the present invention.

Claims

1. An electronic throttle body, comprising a valve body (15), a cover (5), a DC motor (1), a drive device, a throttle shaft (13) and a throttle plate (17); characterized in that: The DC motor (1) is fixedly mounted on the valve body (15), the cover (5) is covered on the valve body (15), and a 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), an intermediate gear (8) and a reset gear (9) on the DC motor (1); the DC motor gear (2) and the intermediate gear (8) are meshed, and the intermediate gear (8) is meshed with the reset gear (9); The throttle shaft (13) is fixedly connected to the reset gear (9); the throttle plate (17) is fixedly connected to the throttle shaft (13); The reset gear (9) comprises a reset gear support foot (91), the throttle shaft (13) is sleeved with a reset spring (11), and the reset spring (11) is hung on the reset gear support foot (91); The DC motor (1) is provided with a DC motor plug pin (101); the lower surface of the cover (5) is provided with a socket, a plug sheet (4) is provided in the socket, and a cover plug pin (51) is also provided on the lower surface of the cover (5); the cover plug pin (51) is provided in the socket and is electrically connected to the plug sheet (4); the DC motor plug pin (101) is inserted into the plug sheet (4) to be electrically connected to the cover plug pin (51); The reset gear (9) is also provided with a reset gear insert (92).

2. The electronic throttle body according to claim 1, characterized in that: The cover and (5) the valve body (15) are connected by the buckle (6).

3. The electronic throttle body according to claim 1, characterized in that: The reset gear insert (92) includes a reset gear insert support foot (921), and the reset gear insert (92) is a metal insert.

4. The electronic throttle body according to claim 3, characterized in that: The reset gear insert (92) and the reset gear (9) are integrally molded by injection molding, and the reset gear insert support foot (921) is injection molded inside the reset gear support foot (91).

5. The electronic throttle body according to claim 1, characterized in that: An upper spring seat (10) and a lower spring seat (12) are sleeved on the throttle shaft (13), and a return spring (11) is sleeved between the upper spring seat (10) and the lower spring seat (12).

6. The electronic throttle body according to claim 1, characterized in that: A magnet (7) is also provided, and the magnet (7) is fixed on the reset gear (9).

7. The electronic throttle body according to claim 1, characterized in that: The cover (5) and the cover pin (51) are injection molded as one piece.

8. The electronic throttle body according to claim 1, characterized in that: The plug-in plate (4) comprises a plug-in plate slot (42), the plug-in plate (4) has a bent hook (41), and the DC motor pin (101) is inserted into the plug-in plate slot (42) and clamped by the bent hook (41).

9. The electronic throttle body according to claim 8, characterized in that: The connector piece (4) is formed by stamping.

10. The electronic throttle body according to claim 10, characterized in that: The DC motor (1) is installed in the valve body (15), and the DC motor (1) is connected to the valve body (15) via the DC motor screw (3).

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