Throttle operating device

1. A throttle operating device comprising:

a fixing member which is fixed to a vicinity of a grip formed at a tip of a handlebar of a transport;

a throttle lever which is attached and extending from the fixing member, and the throttle lever configured to be rotated while the grip is gripped; and

a detection sensor which is disposed on the fixing member and is configured to detect a rotational operation angle of the throttle lever, wherein:

a drive source of the transport is configured to be controlled based on the rotational operation angle of the throttle lever detected by the detection sensor; and

the throttle lever is configured to be rotated in a forward direction and a reverse direction relative to an initial position; and

when the throttle lever is rotated in the forward direction, the drive source of the transport can be controlled.

2. The throttle operating device according to claim 1 , further comprising:

a shaft member which is connected to the throttle lever and rotates around an axis in response to a rotational operation of the throttle lever; and

a magnet which is attached to the shaft member, wherein

the detection sensor is attached at a position corresponding to the magnet, is configured to detect the rotational operation angle of the throttle lever based on a magnetic change of the magnet rotating in response to the throttle lever, and is configured to detect the rotational operation of the throttle lever in the forward direction and the reverse direction.

3. The throttle operating device according to claim 2 , wherein

a cover member covering an opening of the fixing member is provided and the detection sensor is attached to the cover member at a position corresponding to the magnet.

4. The throttle operating device according to claim 1 , further comprising:

a shaft member which is connected to the throttle lever and rotates around an axis in response to a rotational operation of the throttle lever;

a rotating member which is connected to the shaft member and rotates in response to the rotational operation of the throttle lever; and

a return spring which urges the throttle lever to the initial position when the throttle lever is rotated, wherein:

a first locking portion configured to lock one end of the return spring and a second locking portion configured to lock the other end of the return spring are formed in the rotating member;

when the throttle lever is rotated in the forward direction, the one end of the return spring is locked to the first locking portion and pivots in response to a rotation of the rotating member and the other end of the return spring is locked and fixed to the fixing member; and

when the throttle lever is rotated in the reverse direction, the other end of the return spring is locked to the second locking portion and pivots in response to the rotation of the rotating member and the one end of the return spring is locked and fixed to the fixing member.

5. The throttle operating device according to claim 4 , wherein:

the fixing member has:

a first fixing portion which locks and fixes the one end of the return spring when the throttle lever is rotated in the reverse direction;

a second fixing portion which locks and fixes the other end of the return spring when the throttle lever is rotated in the forward direction; and

a clearance is provided between the one end of the return spring and the first fixing portion, or between the other end of the return spring and the second fixing portion.

6. The throttle operating device according to claim 1 , further comprising:

a resistance force applying unit configured to generate friction during a rotational operation of the throttle lever in the forward direction and the reverse direction to apply a resistance force.

7. The throttle operating device according to claim 1 , wherein

an operating load of the throttle lever in the reverse direction is set to be larger than an operating load of the throttle lever in the forward direction.

8. The throttle operating device according to claim 7 , further comprising:

an operating load generating unit which generates a predetermined operating load when the throttle lever is rotated in the reverse direction and does not generate the operating load when the throttle lever is rotated in the forward direction.

9. The throttle operating device according to claim 8 further comprising:

a shaft member which is connected to the throttle lever and rotates around an axis in response to the rotational operation of the throttle lever; and

a rotating member which is connected to the shaft member and rotates in response to the rotational operation of the throttle lever, wherein

the operating load generating unit is configured to rotate together with the rotating member and generate the operating load.

10. The throttle operating device according to claim 8 , wherein

the operating load generating unit includes:

a displacement unit which is displaced in response to the rotational operation of the throttle lever in the reverse direction; and

an urging unit which generates an urging force in response to a displacement of the displacement unit.

11. The throttle operating device according to claim 8 , further comprising:

a return spring which urges the throttle lever to the initial position when the throttle lever is rotated in the forward direction and the reverse direction, wherein

an urging force due to the return spring and the operating load due to the operating load generating unit are generated when the throttle lever is rotated in the reverse direction.

12. The throttle operating device according to claim 1 , further comprising:

a shaft member which is connected to the throttle lever and rotates around an axis in response to a rotational operation of the throttle lever;

a return spring which is attached to the shaft member and urges the throttle lever to the initial position when the throttle lever is rotated; and

an operating portion which is located between one end and the other end of the return spring and is configured to rotate in response to the rotational operation of the throttle lever, wherein:

when the throttle lever is rotated in the forward direction, the one end of the return spring is pressed and pivoted by the operating portion while the other end of the return spring is fixed to obtain an urging force; and

when the throttle lever is rotated in the reverse direction, the other end of the return spring is pressed and pivoted by the operating portion while the one end of the return spring is fixed to obtain an urging force.

13. The throttle operating device according to claim 12 , further comprising:

a first cover part which covers one end side of the return spring; and

a second cover part which covers the other end side of the return spring, wherein

the operating portion is configured to be pivoted by pressing the first cover part or the second cover part according to the rotational operation of the throttle lever.

14. The throttle operating device according to claim 13 , wherein:

the operating portion has:

a first pressing surface which presses the first cover part; and

a second pressing surface which presses the second cover part; and

at least one of the first pressing surface and the second pressing surface includes an edge surface of a notch formed in the operating portion.

15. The throttle operating device according to claim 1 , further comprising:

a shaft member which is connected to the throttle lever and rotates around an axis in response to a rotational operation of the throttle lever;

a return spring for forward rotation which is attached to the shaft member and urges the throttle lever to the initial position when the throttle lever rotates in the forward direction; and

a return spring for reverse rotation which is attached to the shaft member and urges the throttle lever to the initial position when the throttle lever rotates in the reverse direction.

16. The throttle operating device according to claim 15 , wherein:

the detection sensor is configured to detect the rotational operation angle of the throttle lever in the forward direction and the reverse direction by detecting a change in a magnetic force of a magnet attached to the shaft member; and

the return spring for forward rotation and the return spring for reverse rotation are respectively disposed at positions sandwiching the magnet.

17. The throttle operating device according to claim 15 , further comprising:

a neutral position holding unit which holds the shaft member in a neutral position.