IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0249956
(2005-10-13)
|
등록번호 |
US-7675283
(2010-04-21)
|
우선권정보 |
JP-2004-299519(2004-10-14) |
발명자
/ 주소 |
- Hino, Haruyoshi
- Murota, Keiko
- Shirazawa, Hideki
- Terada, Junji
- Ono, Tomohiro
|
출원인 / 주소 |
- Yamaha Hatsudoki Kabushiki Kaisha
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
13 |
초록
▼
A relative position detection device is designed with multiple Hall Effect sensors. In one embodiment, the multiple Hall Effect sensors comprise two different types of Hall Effect sensors. The two different types can be linear and digital. The output of the sensors is used to determine the position
A relative position detection device is designed with multiple Hall Effect sensors. In one embodiment, the multiple Hall Effect sensors comprise two different types of Hall Effect sensors. The two different types can be linear and digital. The output of the sensors is used to determine the position an accelerator control, such as a twist grip, and to control an engine or motor in accordance with the operator demand evidenced by the position of the accelerator control.
대표청구항
▼
What is claimed is: 1. A relative position detection device comprising a first member, a second member being capable of displacement in a relative displacement direction relative to the first member, the first member comprising a magnetic portion, the magnetic portion generating a magnetic field, t
What is claimed is: 1. A relative position detection device comprising a first member, a second member being capable of displacement in a relative displacement direction relative to the first member, the first member comprising a magnetic portion, the magnetic portion generating a magnetic field, the second member comprising a first Hall Effect sensor, the first Hall Effect sensor being positioned within the magnetic field without any intervening magnetic material positioned directly between the first Hall Effect sensor and the magnetic portion of the first member, the first Hall Effect sensor adapted to output a detection signal from a flux density of the magnetic field generated by the magnetic portion, the magnetic portion comprising an S-pole section and an N-pole section that are arranged along the first member side by side in the relative displacement direction, and the first Hall Effect sensor being configured to sense the flux density of the magnetic field at all times throughout a full range in which the first member and the second member displace relative to each other, the detection device further comprising a second Hall effect sensor configured to detect movement of the first member. 2. The device of claim 1 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 3. The device of claim 1, wherein the first Hall Effect sensor is a digital Hall Effect sensor. 4. The device of claim 3 further comprising a magnetic metal plate and the first Hall Effect sensor being disposed between the metal plate and the magnetic portion. 5. The device of claim 4 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 6. The device of claim 3 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 7. The device of claim 1, wherein the second member comprises the second Hall Effect sensor, the second Hall Effect sensor being adapted to detect a change of the flux density of the magnetic field generated by the magnetic portion, and wherein the second Hall Effect sensor is located in a range within which the flux density of the magnetic field of the magnetic portion changes in a generally linear manner. 8. The device of claim 7 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 9. The device of claim 7 further comprising a magnetic metal plate and the first Hall Effect sensor being disposed between the metal plate and the magnetic portion. 10. The device of claim 9 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 11. The device of claim 1 further comprising a magnetic metal plate and the first Hall Effect sensor being disposed between the metal plate and the magnetic portion. 12. The device of claim 11 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 13. The device of claim 1, wherein the second Hall effect sensor is a linear Hall effect sensor. 14. The device of claim 13, wherein the first Hall effect sensor is a digital Hall effect sensor. 15. A relative position detection device comprising a first member, a second member being capable of displacement relative to the first member in a relative displacement direction, the first member comprising a magnetic portion, the magnetic portion generating a magnetic field, the second member comprising a first Hall Effect sensor, the first Hall Effect sensor being positioned within the magnetic field without any intervening magnetic material positioned directly between the first Hall Effect sensor and the magnetic portion of the first member, the first Hall Effect sensor adapted to output a detection signal of a reference position from a flux density of the magnetic field generated by the magnetic portion, the magnetic portion comprising an S-pole section and an N-pole section that are arranged along the first member side by side in the relative displacement direction, and the first Hall Effect sensor being configured to sense the flux density of the magnetic field at all times throughout a full range in which the first member and the second member displace relative to each other, wherein the first Hall Effect sensor is a digital Hall Effect sensor, and wherein the second member further comprises a second Hall Effect sensor that is adapted to detecting a change of the flux density of the magnetic field generated by the magnetic portion, and the second Hall Effect sensor is located in a range within which the flux density of the magnetic field of the magnetic portion changes in a generally linear manner. 16. The device of claim 15 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 17. The device of claim 16 further comprising a magnetic metal plate and the first Hall Effect sensor being disposed between the metal plate and the magnetic portion. 18. The device of claim 17 in combination with a handlebar, one of the magnetic portion and the first Hall Effect sensor being fixed to the handlebar and the other to an accelerator grip mounted to the handlebar for rotation relative to the handlebar, the relative position detection device being mounted in such a manner that a completely-closed position of the accelerator grip is defined as the reference position. 19. A relative position detection device comprising a first member mounted to a handlebar assembly, the first member comprising at least a first magnetic portion, the first magnetic portion generating a magnetic field, the first magnetic portion comprising an S-pole section and an N-pole section that are arranged along the first member side by side in a relative displacement direction between the first member and the second member, a second member also mounted to the handlebar assembly, the second member comprising a detecting portion positioned such that there is no intervening magnetic material positioned directly between the detecting portion of the second member and the first magnetic portion of the first member, the second member comprising first means for detecting relative movement between the first member and the second member and outputting a reference position signal, the second member further comprising second means for detecting relative movement between the first member and the second member and outputting a signal that changes throughout a range of movement of the first member relative to the second member. 20. The device of claim 19, wherein the first means is positioned so as to remain within a detectable portion of the magnetic field throughout a range of motion of the first member relative to the second member.
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