Abstract: A detection sensor according to an aspect of the invention includes a vibratable film constituted by a piezoelectric film, a case accommodating the vibratable film, and a circuit board. The vibratable film is configured to be irradiated with infrared rays and thereby generate first electric signals through a pyroelectric effect, and configured to be vibrated by sound waves and thereby generate second electric signals through a piezoelectric effect. The case includes a transmissive part. The transmissive part is configured to transmit at least infrared rays and disposed on one side in a first direction relative to the vibratable film to face the vibratable film. The first direction is a thickness direction of the vibratable film. The circuit board is fixed to the case and disposed on the other side in the first direction relative to the vibratable film. The circuit board has a sound hole to input therethrough sound waves.

Abstract: A speaker housing of the present invention is a speaker housing for housing a speaker unit, wherein a first rib and/or a second rib whose distance from the speaker unit continuously changes is provided inside the speaker housing, so that the distance from the speaker unit to the first rib and/or the second rib is not constant, resonance is dispersed, no remarkable resonance occurs, and deterioration of distortion can be reduced.

Abstract: A ground terminal including a first ring of a C-shape or a ring shape and contact springs. The contact springs extend from the first ring in a first direction and are spaced from each other in a circumferential direction of the first ring. Each contact spring curves or bends such as to project to an inner side in a corresponding one of second directions. The first direction is an axial direction of the first ring. The second directions are substantially orthogonal to the first direction. The inner side in each second direction is a side nearer an axial center of the first ring. Each contact spring includes a first end portion on a side nearer the first ring, and a wide portion including at least an apex portion of the contact spring and having a width dimension that is larger than a width dimension of the first end portion.

Abstract: A polycrystal having a physical property that enables an AC resistance value to drop sharply is used to reduce transmission loss of a high frequency signal being transmitted. A high frequency transmission device D1 is provided that includes a dielectric 100 and a transmission line 200 adapted for transmitting therethrough high frequency signals. At least part of the transmission line 200 is located on or inside the dielectric 100. At least part of the transmission line 200 is composed of a polycrystal composed of conductor fine particles. The polycrystal has a physical property such that, when a high frequency signal to be transmitted through the transmission line 200 is of frequencies within one or more specific frequency bands, the AC resistance value drops sharply.

Abstract: A linking structure including an interlocking member pivotable in a second direction, and a lever tiltably linked to the interlocking member. The interlocking member includes a blind elongated hole extending in a first direction; first to fourth edges of the elongated hole; a bottom closing the elongated hole and being contiguous with the edges; and first and second shaft holes in the first and second edges to extend communicatingly from the elongated hole to opposite sides in the second direction. The lever includes a base in the elongated hole; first and second juts extending from the base, being swingably received in the elongated hole, and being in abutment with, or opposed with a narrow clearance to, the first and second edges; and first and second rotation shafts extending from the base and being supported in the first and second shaft holes such as to be rotatable in the first direction.

Abstract: The waterproof microphone according to the present invention comprises: a case that includes a partition wall separating an internal space into two chambers, a front chamber and a rear chamber, a hole in the partition wall for allowing communication between the front chamber and the rear chamber, and opening portions in surfaces of the front chamber and the rear chamber that face the partition wall; a waterproof vibrating membrane covering the opening portion of the front chamber; a microphone unit attached to a surface of the partition wall on the rear chamber side; and a sealing member sealing the opening portion of the rear chamber and including an air hole allowing communication between the rear chamber and an external space.

Abstract: This disclosure provides a waterproof electronic component having good waterproofness and a method for assembling the waterproof electronic component. A repeater as a waterproof electronic component includes (i) a substrate having first through holes, (ii) a socket fixed to the substrate, (iii) a housing containing the substrate, (iv) a pin held by the housing and having a first end connected to the substrate, and (v) a sealing section with which an area surrounded by the substrate and the housing is filled, the housing including a support including a supportive wall section capable of supporting a fixation portion of the socket and a seat section having a seating surface on which the substrate is placed, the substrate being placed on the seat section, the socket being oriented in such a manner that at least a portion of an outer surface of the fixation portion is close to and faces the supportive wall section.

Abstract: A unidirectional microphone includes: a case having a shape of a bottomed cylinder and including a sound hole in a bottom thereof; a ring-shaped diaphragm fixed to the bottom in the case; a vibrating membrane stretched on the diaphragm; a backplate which has a shape of a bottomed cylinder and is housed in the case in a nested manner such that an air gap to serve as a sound propagation path is formed between the backplate and an inner surface of the case, the backplate including an aperture serving as a sound propagation path in a side face thereof; a spacer positioned between the diaphragm and the backplate to fix the diaphragm and the backplate, and including a notch serving as a sound propagation path in a portion thereof; and a base plate covering a top opening of the case and including a hole serving as a sound propagation path.

Abstract: A capacitive sensor including a substrate, detection and drive electrodes, and a controller. The substrate includes one or a plurality of insulating layers including first and second faces. The detection electrode includes mutually electrically connected detection lines arrayed at spaced intervals on the first face. The drive electrode includes mutually electrically connected drive lines each arranged on the first or second face and located between adjacent two of the detection lines. When a target approaches the detection electrode being charged and discharged by the controller, the approach causes a change in a first capacitance between the detection electrode and the target. When a target approaches the detection and drive electrodes while the controller is supplying drive pulses to the drive electrode, the approach causes a change in a second capacitance between the detection electrode and the drive electrode. The controller detects the target referring to changes in the first and second capacitances.

Abstract: An electromagnetic actuator including a coil; a non-movable part constituted by a magnetic substance and disposed on one side relative to the coil; and a movable part including a permanent magnet on the other side relative to the coil. Applying a current to the coil alternately generates first and third driving forces to move the magnet and the movable part to one and the other sides in a first direction relative to the coil and the non-movable part. As the movable part moves from a neutral position to the one side in the first direction, a portion of the magnet positioned on the one side in the first direction relative to the first end of the first non-movable part gradually enlarges and is magnetically attracted toward the non-movable part.

Abstract: A sound collecting device that is located in a first space and collects sounds generated in a second space isolated from the first space by a predetermined plate, comprising a metal plate, a piezoelectric element fixed on an upper surface of the metal plate, a housing that has a tubular shape having opened upper and lower surfaces, and has an upper end surface adhesively attached to a lower surface of the metal plate and a lower end surface adhesively attached to the predetermined plate, and a vibration pickup terminal that is accommodated in the housing, and comprises a leg part adhesively attached to the lower surface of the metal plate, a shaft part extending downward from the leg part, and a tip part which is formed at a tip of the shaft part in the downward direction and comes into contact with the predetermined plate when the housing is adhesively attached to the predetermined plate.

Abstract: A sensor unit attachable to a hole of a housing, closed by an overlay on one side in the first direction, from the other side in the first direction. The sensor unit includes a body, a sensor, a vibration generator, a vibration damper, and a fixable part. The body includes a first portion and a second portion on the other side in the first direction relative to the first portion. The sensor provided at the body detects a contact of a detection target with the overlay. The vibration generator can vibrate the body and sensor. The fixable part is provided at the second portion of the body. With the first portion accommodated in the hole, the fixable part is fixed to the housing from the other side in the first direction via the vibration damper, and the vibration damper is at least partly interposed between the fixable part and housing.

Abstract: A seat belt fastened/unfastened state detection switch includes: a printed substrate that includes a circuit for detecting a fastened/unfastened state of a seat belt; a rotor that is rotatably attached to the printed substrate, includes a contact portion, the contact portion coming into contact with a tongue of the seat belt, and rotates in a forward direction in accordance with pushing of the tongue into a buckle; a spring that makes the rotor, the rotor being in a rotated state in the forward direction, rotate in a reverse direction in accordance with pulling of the tongue from the buckle; and an electric brush that is attached to a surface of the rotor, the surface facing the printed substrate, and includes a leg portion whose contact/non-contact state with respect to a conductive part of the circuit changes depending on a rotation state of the rotor.

Abstract: A strain sensor module comprises a base material, a sensor part including a plurality of sensor electrodes for detecting a strain formed on the base material and a lead-out wiring for connecting the plurality of sensor electrodes in series, and a terminal part which is electrically connected to an external circuit.

Abstract: An electronic component assembly including a fixing part fixable to a first face on a first-direction side of an adherend, an electronic component, and a housing. The adherend has a housing hole opening in the first face. The housing includes a fixed portion fixed to the fixing part and a housing body to house the electronic component. The housing body includes a first portion disposed on a second-direction side relative to the fixing part. The second direction is opposite to the first direction. The first portion of the housing body has a dimension in the second direction that is equal to, or smaller than, a dimension in the second direction of the housing hole of the adherend. The first portion of the housing body is configured to be housed in the housing hole of the adherend.

Abstract: A vibration application mechanism including a vibratable part, a load sensor to sense a load applied to the vibratable part, a vibration generator to vibrate the vibratable part, and a controller. The controller makes a first determination as to whether a load sensed by the load sensor has equaled or exceeded a first threshold value; if the first determination is such that the sensed load has equaled or exceeded the first threshold value, the controller drives the vibration generator and makes a second determination, during a predetermined period, as to whether a load sensed by the load sensor has fallen below a second threshold value, wherein the period starts when the sensed load has equaled or exceeded the first threshold value; and if the second determination is such that the sensed load has fallen below the second threshold value during the period, the controller does not drive the vibration generator.

Abstract: A linking structure including an interlocking member pivotable in a second direction, and a lever tiltably linked to the interlocking member. The interlocking member includes a blind elongated hole extending in a first direction; first to fourth edges of the elongated hole; a bottom closing the elongated hole and being contiguous with the edges; and first and second shaft holes in the first and second edges to extend communicatingly from the elongated hole to opposite sides in the second direction. The lever includes a base in the elongated hole; first and second juts extending from the base, being swingably received in the elongated hole, and being in abutment with, or opposed with a narrow clearance to, the first and second edges; and first and second rotation shafts extending from the base and being supported in the first and second shaft holes such as to be rotatable in the first direction.

Abstract: A sensing device including a sensitive part and a first sensor. The sensitive part includes a sealed internal space. At least part of the sensitive part is flexible and configured to be flexed, by a load applied on the sensitive part or by vibration of the sensitive part, so as to change an air pressure in the internal space. The first sensor borders the internal space or is at least partly housed in the internal space. The first sensor includes at least one sensing part configured to detect changes in the air pressure in the internal space.

Abstract: The fluid sensing device including a sensitive part, at least one obstacle, and a sensor. The sensitive part includes a flexible portion extending in a second direction substantially orthogonal to a first direction or fluid flow direction. The at least one obstacle extends in the second direction and is located in spaced relation to, and upstream of, the flexible portion. A collision of the fluid with the at least one obstacle generates vortexes in the fluid alternately on opposite sides in a third direction relative to the at least one obstacle, so that one or more of the vortexes collide with the flexible portion so as to distort at least part of the flexible portion. The third direction is substantially orthogonal to the first and second directions. The sensor includes at least one sensing part to detect the distortion of the flexible portion as a flow of the fluid.