Abstract: Provided is a liquid-surface detection device in which a holder, which turns concurrently with movement of a float arm that moves based on a change in a liquid surface, is securely and rotatably mounted on a frame. A liquid-surface detection device includes a holder that includes an upper piece and a lower piece, and a frame that includes a bearing, a first groove, and a second groove. When mounting the holder onto the frame, the first groove guides the lower piece to the second groove, and the second groove further guides the lower piece to the bearing part so that the bearing part of the frame is disposed between the upper piece and the lower piece of the holder.

Abstract: Provided are a pressure detection device having a fail-safe structure for minimizing leaking out of a fluid targeted for pressure detection, and a method for producing the same. A pressure detection device is provided with: a fluid inflow member having a flow path; a pressure sensor for detecting the pressure of the fluid that has flowed into the flow path; a base plate unit having a first resin section surrounding the pressure sensor; a lid section which is bonded to the first resin section so as to cover the pressure sensor from above, and forms a sealed space in the interior of which the pressure sensor is located; a terminal unit; and a resin cover section for bonding the fluid inflow member, the base plate unit, the lid section, and the terminal unit. The lid section is bonded to the first resin section and is pushed on from above by the resin cover section.

Abstract: A liquid level detection device is configured so as to reduce or eliminate the contact between electrical cords led out of a detection section. A liquid level detection device is provided with: a detection section which detects the position of a liquid surface on the basis of the rotation of a rotation section rotating as a float is displaced; a plate-like mounting plate section, one surface of which is a mounting surface to which the detection section is mounted; a flange section which is mounted to a tank for containing liquid; and first and second electrical cords which are led out of the detection section toward the flange section. A branch section which comprises a through-hole is provided in the mounting plate section. The second electrical cord passes through the branch section and is routed around from the mounting surface side of the mounting plate section to the back surface side thereof.

Abstract: Provided is a liquid-surface detection device in which a holder is securely and rotatably supported on a frame.

Abstract: Provided are a pressure detection device having a fail-safe structure for minimizing leaking out of a fluid targeted for pressure detection, and a method for producing the same. A pressure detection device is provided with: a fluid inflow member having a flow path; a pressure sensor for detecting the pressure of the fluid that has flowed into the flow path; a base plate unit having a first resin section surrounding the pressure sensor; a lid section which is bonded to the first resin section so as to cover the pressure sensor from above, and forms a sealed space in the interior of which the pressure sensor is located; a terminal unit; and a resin cover section for bonding the fluid inflow member, the base plate unit, the lid section, and the terminal unit. The lid section is bonded to the first resin section and is pushed on from above by the resin cover section .

Abstract: A liquid level detection device is configured so as to reduce or eliminate the contact between electrical cords led out of a detection section. A liquid level detection device is provided with: a detection section which detects the position of a liquid surface on the basis of the rotation of a rotation section rotating as a float is displaced; a plate-like mounting plate section, one surface of which is a mounting surface to which the detection section is mounted; a flange section which is mounted to a tank for containing liquid; and first and second electrical cords which are led out of the detection section toward the flange section. A branch section which comprises a through-hole is provided in the mounting plate section. The second electrical cord passes through the branch section and is routed around from the mounting surface side of the mounting plate section to the back surface side thereof.

Abstract: A liquid level detection device which protects at least a detection element, uses a less number of parts, can be easily assembled, and has reduced cost. A liquid level detection device (1) comprising: a float arm (2) which is provided with a float (2a) operating by following the displacement of a liquid level; a magnet (4) displaced as the float arm (2) operates; and a detection element (5) for detecting a change in the magnetism of the magnet (4). The liquid level detection device (1) also comprises; a first case body (8) consisting of a resin and covering the detection element (5); and a second case body (9) consisting of a resin and covering the first case body (8).

Abstract: The present invention provides an inexpensive small-sized liquid level detector. A liquid level detector 1 includes a float moving in accordance with variations in liquid level, a hard circuit board 5, resistors 12a and 12b provided on the circuit board 5, a first sliding path 14 made of a plurality of electrodes 13 provided on the circuit board 5 and connected to the resistors 12a and 12b, and a first contact 6 coming into contact with the first sliding path 14, and the liquid level detector 1 outputs an electrical signal based on the resistances of the resistors 12a and 12b which are varied by the first contact 6 coming into contact with at least one of the plurality of electrodes 13 forming the first sliding path 14 in accordance with a variation of the float.

Abstract: The present invention provides an inexpensive small-sized liquid level detector. A liquid level detector 1 includes a float moving in accordance with variations in liquid level, a hard circuit board 5, resistors 12a and 12b provided on the circuit board 5, a first sliding path 14 made of a plurality of electrodes 13 provided on the circuit board 5 and connected to the resistors 12a and 12b, and a first contact 6 coming into contact with the first sliding path 14, and the liquid level detector 1 outputs an electrical signal based on the resistances of the resistors 12a and 12b which are varied by the first contact 6 coming into contact with at least one of the plurality of electrodes 13 forming the first sliding path 14 in accordance with a variation of the float.