A flexure mechanism for an interface device that interfaces a user with a computer system. An interface device includes a manipulandum physically contacted by the user. A five-bar closed-loop mechanism is coupled to the manipulandum to provide two rotary degrees of freedom to the manipulandum. The m
A flexure mechanism for an interface device that interfaces a user with a computer system. An interface device includes a manipulandum physically contacted by the user. A five-bar closed-loop mechanism is coupled to the manipulandum to provide two rotary degrees of freedom to the manipulandum. The mechanism includes members coupled to each other by flexible couplings allowing rotation of the members. In preferred embodiments, four or five of the members are coupled together by flexible couplings that allow bending, thereby forming a unitary piece, where the couplings are oriented along axes of rotation of the mechanism. A sensor senses a position of the manipulandum outputs a sensor signal, and in some embodiments actuators are coupled to the mechanism to output a force to the manipulandum in particular degrees of freedom. The manipulandum can be a joystick handle or portion of a sphere, where the device in one embodiment can be a handheld gamepad or similar controller.
대표청구항▼
A flexure mechanism for an interface device that interfaces a user with a computer system. An interface device includes a manipulandum physically contacted by the user. A five-bar closed-loop mechanism is coupled to the manipulandum to provide two rotary degrees of freedom to the manipulandum. The m
A flexure mechanism for an interface device that interfaces a user with a computer system. An interface device includes a manipulandum physically contacted by the user. A five-bar closed-loop mechanism is coupled to the manipulandum to provide two rotary degrees of freedom to the manipulandum. The mechanism includes members coupled to each other by flexible couplings allowing rotation of the members. In preferred embodiments, four or five of the members are coupled together by flexible couplings that allow bending, thereby forming a unitary piece, where the couplings are oriented along axes of rotation of the mechanism. A sensor senses a position of the manipulandum outputs a sensor signal, and in some embodiments actuators are coupled to the mechanism to output a force to the manipulandum in particular degrees of freedom. The manipulandum can be a joystick handle or portion of a sphere, where the device in one embodiment can be a handheld gamepad or similar controller. by partitioning by the partitioning member, the magnetic particles having a magnetization of at least 20.0 emu/g when a magnetic field of 500 Oe is applied to the magnetic particles, and the liquid dispersion containing 80 to 90 wt % of a single-color fluid and 10 to 20 wt % of magnetic particles, wherein the single-color fluid is a white fluid that includes at least titanium oxide and silicon oxide in which when the total weight of the white fluid is 100 wt %, the wt % of the titanium oxide in the white fluid is C, and the wt % of the silicon oxide is D, the weight ratio C/D is in the relationship of 1≤C/D≤2.5. 6. A magnetophoresis type display device as set forth in claim 5, wherein the magnetic particles have a magnetization of at least 8.0 emu/g when a magnetic field of 200 Oe is applied to the magnetic particles. 7. A magnetophoresis type display device as set forth in claim 5, wherein the viscosity of the single-color fluid is 200 to 800 cp at 25° C. 8. A magnetophoresis type display device as set forth in claim 5, further comprising a recording magnetic member able to move along the outer surface of the front panel sheet, the recording magnetic member having a magnetic force of an extent giving an effective magnetic flux density of 100 to 300 Gauss at the outer surface of the back panel sheet in the state when the recording magnetic member is brought into contact with the outer surface of the front panel sheet. 9. A magnetophoresis type display device as set forth in claim 5, further comprising an erasing magnetic member arranged at the outer surface of the back panel sheet, the erasing magnetic member having a magnetic force of an extent giving an effective magnetic flux density of 100 to 300 Gauss at the outer surface of the front panel sheet in the state when the erasing magnetic member is brought into contact with the outer surface of the back panel sheet. 10. A magnetophoresis type display device as set forth in claim 9, wherein the erasing magnetic member is arranged to be able to move along the outer surface of the back panel sheet. 11. A magnetophoresis type display device as set forth in claim 5, wherein the thickness of the sealed space is 0.8 to 1.5 mm. 12. A magnetophoresis type display device as set forth in claim 5, wherein the magnetic particles contain 60 to 90 wt % of a magnetic material and 10 to 40 wt % of a synthetic resin and/or coloring agent, and the magnetic particles have a mean particle size of 50 to 200 μm. 13. A magnetophoresis type display device as set forth in claim 5, wherein the front panel sheet is comprised of polyethylene terephthalate. 14. A magnetophoresis type display device comprising: a transparent front panel sheet, a back panel sheet arranged with respect to the front panel sheet so as to form a sealed space with it, a partitioning member provided between the front panel sheet and the back panel sheet for partitioning the sealed space into a large number of cells, and a liquid dispersion containing magnetic particles to be sealed inside the cells formed by partitioning by the partitioning member, the magnetic particles having a magnetization of at least 20.0 emu/g when a magnetic field of 500 Oe is applied to the magnetic particles, and the liquid dispersion containing 80 to 90 wt % of a single-color fluid and 10 to 20 wt % of magnetic particles, wherein the single-color fluid is a white fluid that includes at least titanium oxide and silicon oxide in which when the total weight of the white fluid is 100 wt %, the wt % of the titanium oxide in the white fluid is C, and the wt % of the silicon oxide is D, the weight ratio C/D is in the relationship of 1≤C/D≤2.5 and the weight C+D is in the relationship of 3.0 wt %≤C+D≤6.0 wt %. 15. A magnetophoresis type display device comprising: a transparent front panel sheet, a back panel sheet arranged with respect to the front panel sheet so as to form a sealed space with it, a partitioning member provi ded between the front panel sheet and the back panel sheet for partitioning the sealed space into a large number of cells, and a liquid dispersion containing magnetic particles to be sealed inside the cells formed by partitioning by the partitioning member, the magnetic particles having a magnetization of at least 20.0 emu/g when a magnetic field of 500 Oe is applied to the magnetic particles, and the liquid dispersion containing 80 to 90 wt % of a single-color fluid and 10 to 20 wt % of magnetic particles, wherein the single-color fluid is a white fluid that includes at least isoparaffin and a mixture of a plurality of white inorganic oxides in which when the total weight of the white fluid is 100 wt %, the wt % of the isoparaffin in the white fluid is A and the wt % of the mixture of the white inorganic oxides is B, the weight ratio A/B is in the relationship of 1≤A/B≤20. 16. A magnetophoresis type display device comprising: a transparent front panel sheet, a back panel sheet arranged with respect to the front panel sheet so as to form a sealed space with it, a partitioning member provided between the front panel sheet and the back panel sheet for partitioning the sealed space into a large number of cells, and a liquid dispersion containing magnetic particles to be sealed inside the cells formed by partitioning by the partitioning member, the magnetic particles having a magnetization of at least 20.0 emu/g when a magnetic field of 500 Oe is applied to the magnetic particles, and the liquid dispersion containing 80 to 90 wt % of a single-color fluid and 10 to 20 wt % of magnetic particles, wherein the single-color fluid includes at least a dispersion medium and a single-color pigment in which when the total weight of the single-color fluid is 100 wt %, the wt % of the dispersion medium in the single color fluid is A', and the wt % of the single-color pigment is B', the weight ratio A'/B' is in the relationship of 10≤A'/B'≤20. 17. A magnetophoresis type display device comprising: a transparent front panel sheet, a back panel sheet arranged with respect to the front panel sheet so as to form a sealed space with it, a partitioning member provided between the front panel sheet and the back panel sheet for partitioning the sealed space into a large number of cells, and a liquid dispersion containing magnetic particles to be sealed inside the cells formed by partitioning by the partitioning member, the magnetic particles having a magnetization of at least 20.0 emu/g when a magnetic field of 500 Oe is applied to the magnetic particles, and the liquid dispersion containing 80 to 90 wt % of a single-color fluid and 10 to 20 wt % of magnetic particles, wherein the partitioning member is comprised of paper coated with a resin. 18. A magnetophoresis type display device comprising: a transparent front panel sheet, a back panel sheet arranged with respect to the front panel sheet so as to form a sealed space with it, a partitioning member provided between the front panel sheet and the back panel sheet for partitioning the sealed space of a thickness of 0.8 to 1.5 mm into a large number of cells, and a liquid dispersion containing magnetic particles to be sealed inside the cells formed by partitioning by the partitioning member, the magnetic particles containing 60 to 90 wt % of a magnetic material and 10 to 40 wt % of a synthetic resin and/or coloring agent, the mean particle size of the magnetic particles being 50 to 200 μm, the magnetization of the magnetic particles when a 200 Oe magnetic field is applied to the magnetic particles being at least 8.0 emu/g, and the magnetization of the magnetic particles when a 500 Oe magnetic field is applied to the magnetic particles being at least 20.0 emu/g, the liquid dispersion containing 80 to 90 wt % of a single-color fluid and 10 to 20 wt % of magnetic particles, wherein the single-color fluid is a white fluid that includes at least titanium oxide and silico n oxide in which when the total weight of the white fluid is 100 wt %, the wt % of the titanium oxide in the white fluid is C, and the wt % of the silicon oxide is D, the weight ratio C/D is in the relationship of 1≤C/D≤2.5 and the weight C+D is in the relationship of 3.0 wt %≤C+D≤6.0 wt %. 19. A magnetophoresis type display device as set forth in claim 18, further comprising a recording magnetic member able to move along the outer surface of the front panel sheet, the recording magnetic member having a magnetic force of an extent giving an effective magnetic flux density of 100 to 300 Gauss at the outer surface of the back panel sheet in the state when the recording magnetic member is brought into contact with the outer surface of the front panel sheet. 20. A magnetophoresis type display device as set forth in claim 18, further comprising an erasing magnetic member arranged at the outer surface of the back panel sheet, the erasing magnetic member having a magnetic force of an extent giving an effective magnetic flux density of 100 to 300 Gauss at the outer surface of the front panel sheet in the state when the erasing magnetic member is brought into contact with the outer surface of the back panel sheet. 21. A magnetophoresis type display device as set forth in claim 20, wherein the erasing magnetic member is arranged to be able to move along the outer surface of the back panel sheet. 22. A magnetophoresis type color display device comprising: a transparent front panel sheet, a back panel sheet arranged with respect to the front panel sheet so as to form a sealed space with it, a partitioning member provided between the front panel sheet and the back panel sheet for partitioning the sealed space of a thickness of 0.8 to 1.5 mm into a large number of cells, a first liquid dispersion containing first colored magnetic particles to be sealed inside selected specific cells formed by partitioning by the partitioning member, and a second liquid dispersion containing second colored magnetic particles to be sealed inside selected specific cells in the cells in which the first liquid dispersion is not sealed and colored different from the first colored magnetic particles, the mean particle sizes of the first colored magnetic particles and the second colored magnetic particles being 50 to 200 μm and the magnetization of the magnetic particles when a 500 Oe magnetic field is applied to the magnetic particles being at least 20.0 emu/g, wherein the first liquid dispersion is a liquid comprised of a single-color fluid in which the first colored magnetic particles are dispersed, while the second liquid dispersion is a single-color fluid in which the second colored magnetic particles are dispersed, the single-color fluid is a white fluid that includes at least isoparaffin and a mixture of a plurality of white inorganic oxides in which when the total weight of the white fluid is 100 wt %, the wt % of the isoparaffin in the white fluid is A and the wt % of the mixture of the white inorganic oxides is B, weight ratio A/B is in the relationship of 10≤A/B≤20. 23. A magnetophoresis type display device as set forth in claim 22, wherein the viscosity of the single-color fluid is 200 to 800 cp at 25° C. 24. A magnetophoresis type display device as set forth in claim 22, further comprising a recording magnetic member able to move along the outer surface of the front panel sheet, the recording magnetic member having a magnetic force of an extent giving an effective magnetic flux density of 100 to 500 Gauss at the outer surface of the back panel sheet in the state when the recording magnetic member is brought into contact with the outer surface of the front panel sheet. 25. A magnetophoresis type display device as set forth in claim 22, further comprising an erasing magnetic member arranged at an outer surface of the back panel sheet, the erasing magnetic member having a magnetic force of an extent giving an effectiv
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