Throttle mechanism

Abstract

The aim is to discourage users from readjusting the throttle valve using a simple method. [Solution] A throttle mechanism (15) comprising a throttle body (20) on which a throttle valve (23) is arranged, wherein the throttle body (20) comprises a rotating part (24) that rotates the throttle valve (23), a cover (50) that covers the rotating part (24), and an adjustment part (36) that adjusts the position of the rotating part (24), wherein a part of the adjustment part (36) is located outside the throttle body (20), and the cover (50) comprises a guard part (53) that covers a part of the adjustment part (36), the throttle mechanism.

Claims

1. In a throttle mechanism (15) comprising a throttle body (20) on which a throttle valve (23) is located, The throttle body (20) includes a rotating part (24) that rotates the throttle valve (23), A cover (50) that covers the rotating part (24), The device includes an adjustment unit (36) for adjusting the position of the rotating unit (24), A portion of the adjustment unit (36) is located outside the throttle body (20), The cover (50) includes a guard portion (53) that covers a part of the adjustment portion (36). Throttle mechanism.

2. The guard portion (53) extends toward the side away from the cover (50), The end of the guard portion (53) that is separated from the cover (50) is in contact with or close to the throttle body (20). The throttle mechanism according to claim 1.

3. The throttle body (20) is provided with a recessed recess (35), A portion of the adjustment section (36) is housed in the space created by the recess (35). The throttle mechanism according to claim 1.

4. The throttle body (20) is provided with a protrusion (26) adjacent to the recess (35), The convex portion (26) is positioned on the opposite side of the cover (50) with the concave portion (35) in between. The recess (35) is recessed downwards, and the upper end (26a) of the protrusion (26) is higher than the lower surface (53d) of the guard portion (53). The throttle mechanism according to claim 3.

5. The guard portion (53) comprises a first guard portion (53a) that covers the upper surface of the adjustment portion (36), and a second guard portion (53b) that extends from one end of the first guard portion (53a) to cover a part of the side of the adjustment portion (36). The throttle mechanism according to claim 4.

6. The cover (50) has a plurality of claw portions (54) that engage with the throttle body (20) arranged at intervals, and any of the claw portions (54) is positioned adjacent to the other end of the first guard (53a). The throttle mechanism according to claim 5.

7. The second guard portion (53b) extends along the tangent to the surface of the throttle body (20) located in the direction of extension of the second guard (53b), The throttle mechanism according to claim 6.

8. The upper end (54a1) of the claw portion (54) adjacent to the other end of the first guard portion (53a) and the upper end (53c) of the guard portion (53) are at the same height. The throttle mechanism according to claim 7.

9. The upper end (26a) of the protrusion (26) and the upper end (53c) of the guard portion (53) are at the same height. The throttle mechanism according to claims 4 to 8.

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