# US 2017/0288643 A1 · Displacement conversion mechanism and tunable filter device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0288643 A1 - Document ID: US20170288643A1 - Status: Published application - Kind: A1 - Application number: 15/394,965 - Filed: 2016-12-30 - Published: 2017-10-05 - Earliest claimed: 2016-03-29 - Assignees: Kabushiki Kaisha Toshiba - Applicants: Kabushiki Kaisha Toshiba - Inventors: Hiroshi TAKAHASHI; Junya Tanaka; Rie Katsuki; Hiroyuki Kayano; Noritsugu Shiokawa; Tamio Kawaguchi; Hiroaki Ikeuchi - Web page: https://patentgrep.com/patent/US20170288643A1 ## CPC - H03H 9/54: comprising resonators of piezoelectric or electrostrictive material (comprising resonators using surface acoustic waves H03H9/64) - H01P 1/20: Frequency-selective devices, e.g. filters - H01P 1/203: Strip line filters - H01P 1/2084: {with dielectric resonators} - H03H 9/17: having a single resonator (crystal tuning forks H03H9/21) - H04R 17/00: Piezoelectric transducers; Electrostrictive transducers (piezoelectric or electrostrictive elements in general H10N30/00; details of piezoelectric or electrostrictive motors, generators or positioners {H10N30/00}) - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) - H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K) ## Abstract A displacement conversion mechanism of an embodiment is a displacement conversion mechanism which is provided with a base, a displacement element which is in contact with the base and is displaced in a first direction, a first displacement portion which is in contact with the displacement element and can be displaced in the first direction, a second displacement portion which connects to an end of the first displacement portion at a first connection portion, and connects to the base at a second connection portion, and a third displacement portion which connects to the other end of the first displacement portion, connects to an end portion of the second displacement portion at a fourth connection portion, and can be displaced in a second direction intersecting with the first direction. ## Claims ### Claim 1 A displacement conversion mechanism, comprising: a base; a displacement element which is in contact with the base and displaces in a first direction; a first displacement portion which is in contact with the displacement element and is capable to displace in the first direction; a second displacement portion, having a first connection portion and a second connection portion, which connects to an end of the first displacement portion at the first connection portion, and connects to the base at the second connection portion; and a third displacement portion, having a third connection portion and a fourth connection portion, which connects to the other end of the first displacement portion at the third connection portion, and which connects to an end portion of the second displacement portion at the fourth connection portion, and the third displacement portion being capable to displace in a second direction intersecting with the first direction. ### Claim 2 (depends on 1) The displacement conversion mechanism according to claim 1: wherein the third displacement portion has a positioning member. ### Claim 3 (depends on 1) The displacement conversion mechanism according to claim 1: wherein the second connection portion is located between the first connection portion and the fourth connection portion. ### Claim 4 (depends on 1) The displacement conversion mechanism according to claim 1: wherein in the second displacement portion, a distance from the second connection portion to the fourth connection portion is longer than a distance from the first connection portion to the second connection potion. ### Claim 5 (depends on 2) The displacement conversion mechanism according to claim 2: wherein in the third displacement portion, a distance from the third connection portion to the positioning member is longer than a distance from the third connection portion to the fourth connection potion. ### Claim 6 (depends on 1) The displacement conversion mechanism according to claim 1: wherein in each of the first connection portion, the second connection portion, the third connection portion and the fourth connection portion, stiffness in the first direction is higher than stiffness in an otherwise direction. ### Claim 7 (depends on 1) The displacement conversion mechanism according to claim 1: wherein in each of the first connection portion, the second connection portion, the third connection portion and the fourth connection portion, stiffness in each of the first direction and the second direction is higher than stiffness in an otherwise direction. ### Claim 8 (depends on 1) The displacement conversion mechanism according to claim 1: wherein the displacement element is formed of a piezoelectric element or a laminated type piezoelectric element. ### Claim 9 (depends on 1) The displacement conversion mechanism according to claim 1, further comprising: an elastic member to give an elastic force between the base and the third displacement portion. ### Claim 10 (depends on 9) The displacement conversion mechanism according to claim 9: wherein the elastic force gives a pre-pressure to the displacement element in the first direction via the third displacement portion, the second displacement portion and the first displacement portion. ### Claim 11 (depends on 9) The displacement conversion mechanism according to claim 9: wherein a direction of the elastic force coincides with the second direction. ### Claim 12 (depends on 2) The displacement conversion mechanism according to claim 2: wherein the positioning member is formed of a dielectric body or a magnetic body or a conductor material. ### Claim 13 (depends on 1) A tunable filter device comprising the displacement conversion mechanism according to claim 1. ### Claim 14 (depends on 2) In a tunable filter device comprising the displacement conversion mechanism according to claim 2, the tunable filter device comprising: a substrate fixing portion; and a filter substrate having a circuit formed of a conductor film on a part of the substrate fixing portion; wherein the positioning member is opposite to the circuit, and the third displacement portion moves in accordance with a displacement of the displacement element, and thereby a distance between the positioning member and the circuit changes. ### Claim 15 (depends on 14) The tunable filter device according to claim 14: wherein the conductor film is formed of a superconductor, and the substrate fixing portion is a cold plate. ### Claim 16 (depends on 14) The tunable filter device according to claim 14, further comprising: a position sensor to measure a position of the positioning member; and a control device to determine a displacement amount of the displacement element based on position information of the position sensor.