RESET MECHANISM FOR ELECTRONIC THROTTLE BODY

Abstract

A reset mechanism for an electronic throttle body comprising a valve, a throttle shaft, a reset gear, an upper spring seat, a lower spring seat, and a reset spring. A support leg is installed in the reset gear. The upper spring seat, the reset spring, and the lower spring seat are sleeved outside the reset gear. Two ends of the reset spring are fixed to the upper spring seat and the lower spring seat, respectively. The upper spring seat has an upper support leg surface attached to a first side of a valve limiting block and a side of the support leg. The lower spring seat has a lower support leg surface attached to a second side of the valve limiting block and another side of the support leg.

Claims

1. A reset mechanism for an electronic throttle body, comprising a valve, a throttle shaft, a reset gear, an upper spring seat, a lower spring seat, and a reset spring, wherein the reset gear is provided with a support leg, and the support leg has two sides; the upper spring seat, the reset spring, and the lower spring seat are successively sleeved outside the reset gear; one torsion arm of the reset spring is fixed on the upper spring seat, and the other torsion arm is fixed on the lower spring seat; the upper spring seat has a support leg surface that corresponds to one side of the support leg, and the lower spring seat has a support leg surface that corresponds to the other side of the support leg; the throttle shaft passes through the lower spring seat, the reset spring and the upper spring seat, then is connected to the reset gear; the valve has a limiting block which has a first side and a second side; in a default state, the support leg surface of the upper spring seat is attached both to the first side of the valve limiting block and to one side of the support leg of the reset gear; the support leg surface of the lower spring seat is attached both to the second side of the valve limit block and to the other side of the support leg of the reset gear.

2. The reset mechanism for an electronic throttle body according to claim 1, wherein the reset gear comprises a gear part, and a rotating part connected below the gear part, wherein the rotating part is provided with a support leg in the axial direction, and the support leg has two sides; and the upper spring seat, the reset spring, and the lower spring seat are successively sleeved outside the rotating part of the reset gear.

3. The reset mechanism for an electronic throttle body according to claim 1, wherein one torsion arm of the reset spring is hung in the groove of the upper spring seat for fixation, and the other torsion arm is hung in the groove of the lower spring seat for fixation.

4. The reset mechanism for an electronic throttle body according to claim 2, wherein one torsion arm of the reset spring is hung in the groove of the upper spring seat for fixation, and the other torsion arm is hung in the groove of the lower spring seat for fixation.

Description

DESCRIPTION OF FIGURES

[0010] FIG. 1 shows the structure of a reset mechanism for the electronic throttle body (1).

[0011] FIG. 2 shows the structure of a reset mechanism for the electronic throttle body (2).

[0012] FIG. 3 shows the structure of a reset gear with a limiting surface in the current technology.

[0013] FIG. 4 shows the structure of a coupling ring with a limiting surface in the current technology.

[0014] FIG. 5 shows the matching structure of the limiting surface of the coupling ring and the limiting surface of the valve in the current technology.

[0015] FIG. 6 shows the structure of the reset mechanism for the electronic throttle body (except the valve) in the present invention.

[0016] FIG. 7 shows the structure of the reset mechanism for the electronic throttle body with the reset gear, and the upper and lower spring seats in the present invention.

[0017] FIG. 8 shows the use structure of the reset mechanism for the electronic throttle body in the present invention.

DETAILED DESCRIPTION OF THE INVENTION

[0018] As shown in FIGS. 6, 7, and 8, the present invention provides a reset mechanism for an electronic throttle body, which comprises a valve (19), a throttle shaft (20), a reset gear (21), an upper spring seat (11), a lower spring seat (13), and a reset spring (12). The reset gear (21) is composed of a gear part (211) and a rotating part (212) connected under the gear part (211). A support leg (14) is installed in the axial direction outside the rotating part (212), and the support leg (14) has two sides. The upper spring seat (11), the reset spring (12), and the lower spring seat (13) are successively sleeved outside the rotating part (212) of the reset gear (21), wherein one torsion arm of the reset spring (12) is fixed on the upper spring seat (11), and the other torsion arm is fixed on the lower spring seat (13). The upper spring seat (11) has a support leg surface (16), the support leg surface (16) corresponds one side of the support leg (14); the lower spring seat (13) has a support leg surface (15), and the support leg surface (15) corresponds to the other side of the support leg (14). The throttle shaft (20) sequentially passes through the lower spring seat (13), the reset spring (12), and the upper spring seat (11); then is connected to the reset gear (21) (the welding method can be used, and during welding, the default opening angle of the valve plate can be obtained by turning the throttle shaft (20)). The valve (19) is installed into the above structure. The valve (19) has a limiting block which has a first side (17) and a second side (18). In the default state, the support leg surface (16) of the upper spring seat is attached to both the first side (17) of the valve limiting block and one side of the support leg (14) in the reset gear (21). The support leg surface (15) of the lower spring seat is attached to both the second side (18) of the valve limiting block and the other side of the support leg (14) in the reset gear (21).

[0019] When in use, if the reset gear (21) rotates in the axial closing direction, the support leg surface (16) of the upper spring seat will instantly break away from the support leg (14) of the reset gear (21). At the same time, the support leg surface (15) of the lower spring seat will also instantly break away from the second side (18) of the valve limiting block. After the closing action is completed, it will be reset by the spring restoring force. On the contrary, if the reset gear (21) rotates in the axial opening direction, the support leg surface (15) of the lower spring seat-will instantly break away from the support leg (14) of the reset gear (21). At the same time, the support leg surface (16) of the upper spring seat will also instantly break away from the first side (17) of the valve-limiting block. After the opening action is completed, it will be reset by the spring restoring force.

[0020] In the present invention, one torsion arm (12) of the return spring (12) is hung in the groove (21) of the upper spring seat (11), and the other torsion arm is hung in the groove (22) of the lower spring seat (13).

[0021] In the present invention, a support leg (14) is installed in the axial direction outside the rotating part (212), and the support leg (14) has two sides. The rotating part (212) can also be provided two support legs in the axial direction, and each leg has an outward side.

[0022] In the present invention, the valve (19) is provided with a limiting block, which has a first side (17) and a second side (18). It can also be that each of two valve limiting blocks has an outward side.

[0023] The mechanism of the present invention has a simple structure and can be made with a simplified manufacturing process and can easily and accurately control the default position of the throttle body.

[0024] The above are only the preferred embodiments of the invention, but the invention is not intended to be limited thereby. That is to say, all equivalent changes and modifications made according to the content of the patent application scope of the invention shall be those which are technical for the invention.