Abstract: Disclosed herein is a vehicle dynamoelectric machine electrical system. The system includes, a housing having a boss, and at least one electrically insulative member in operable communication with the boss and capable of electrically isolating the housing from a bracket configured to mount the housing.

Abstract: Embodiments of hobby servo motor devices are disclosed. Embodiments include a hobby servo motor having a rotatable splined output shaft and a rotational enhancement mechanism that is rotatably engaged to the hobby servo motor splined output shaft. The rotational enhancement mechanism has an auxiliary shaft that is in-line with the hobby servo motor output shaft. Embodiments also include a support panel that is rigidly connected to the hobby servo motor and displaced from the hobby servo motor. The support panel has an aperture that receives and supports the auxiliary shaft.

Abstract: A motor mount assembly for an air cleaner is provided according to an embodiment of the invention. The motor mount assembly includes a motor ring adapted for receiving a motor, a mount ring adapted to be received in the air cleaner, and a plurality of mounting vanes extending between the motor ring and the mount ring. A mounting vane of the plurality of mounting vanes includes a proximal end and a distal end. The distal end is affixed to the motor ring and the proximal end is affixed to the mount ring.

Abstract: An electric motor has a rotor having an end portion and a recessed portion formed at the end portion. A rotational shaft is mounted to the rotor. A stator covers an outer peripheral portion of the rotor and forms a magnetic field that generates a torque around the rotational shaft to thereby rotate the rotational shaft and the rotor. A bearing rotatably supports the rotational shaft and is entirely spaced-apart from the end portion of the rotor in an axial direction of the rotational shaft. A slider is slidably mounted around the rotational shaft and supports rotation of the rotational shaft about a rotational axis thereof. The slider is interposed between the bearing and the rotor so that a portion of the slider is entirely contained in the recessed portion of the rotor and the remaining portion of the slider is disposed in the space between the bearing and the rotor and in contact with the bearing.

Abstract: A disc drive apparatus mounted with an improved clamping mechanism for driving a disc to rotate is composed of a rotor and a stator, which supports the rotor rotatable freely. The rotor includes a rotor yoke, a clamping section for clamping down a disc on the rotor yoke, a boss and a shaft. The rotor yoke is constituted by a regulating surface for regulating a position in an axial direction of the disc clamped down on the rotor yoke by the clamping section and a center hole. The boss is constituted by a base section in disciform having a through hole and an outer peripheral wall section in an annular shape extending outward around the base section with perpendicularly intersecting to the base section. The boss fastens the rotor yoke by engaging the center hole of the rotor yoke with an outer circumferential surface of the outer peripheral wall section at the bottom. The shaft is fixed to the boss by being inserted into the through hole of the boss.

Abstract: The present invention provides an apparatus for the horizontal stacking of laminations 10 and donuts to form a stator core. A stator generator frame 2 has multiple keybars 6 that run the axial length of the frame. The laminations 10 have grooves 12 there-in that engage the keybars to provide a secure fit of the laminations to the generator frame. By extending two or more of the keybars 6, these extensions 7 may be used as rails on which the laminations may be horizontally inserted into the stator frame.

Abstract: A regulator assembly mounting threaded aperture is formed on an inner wall surface of a rear bracket, and a receiving recess portion is recessed into an inner wall surface of the rear bracket around the regulator assembly mounting threaded aperture. A regulator assembly mounting penetrating aperture is disposed through a base of a regulator assembly, and an engaging protruding portion is disposed so as to project from the base around the regulator assembly mounting penetrating aperture. The regulator assembly is fixed to the rear bracket by engaging the engaging protruding portion in the receiving recess portion and fastening a regulator assembly mounting screw that has been passed through the regulator assembly mounting penetrating aperture into the regulator assembly mounting threaded aperture.

Abstract: In a starter having a motor comprising a rear bracket 23 mounted to a cylindrical motor housing opening portion, flanges 23a protruding outward from the outer circumferential portion 23c of the rear bracket and set bolts mounted to the flanges 23a and located on the outside of the motor housing, the rear bracket 23 is formed sphere-like with the inner side of the motor being convex and the central portion of the rear bracket is expanded toward the inner side of the motor compared with the outer circumferential portion 23c thereof. Even if the rear bracket 23 is subjected to impact due to “Kicking back”, the influence of the impact force is relaxed by the central portion displaced inward in advance and the rear bracket 23 is effectively prevented from being lifted up due to “Kicking back” in spite of an outer bolt type configuration.

Abstract: A vehicular alternator is provided which can suppress the vibration of a circuit board. The vehicular alternator has a rectifier that includes a plurality of diodes forming a full-wave rectifier circuit, a pair of negative and positive terminal side heat sinks that hold the diodes, and a circuit board connecting the diodes and a stator coil to one another, wherein the negative and positive terminal side heat sinks and the circuit board are mounted on a casing at a plurality of mounting portions, which are superposed with one another in an axial direction of a shaft, by using mounting members. Between adjacent ones of the mounting portions, there are formed abutment portions in which the circuit board is superposed on and placed in abutment with the negative terminal side heat sink or the positive terminal side heat sink, and the abutment portions are fixed to each other by rivets.

Abstract: A fixing structure capable of adjusting the dimensions in the vertical direction of a vibration generating device including a circuit board in combination with the circuit board without reducing the size or the diameter of the vibration generation device. A fixing holder in a holder shape for holding or including at least a part of the outer circumference of a vibration generating device has an inner circumferential surface substantially identical to the external shape of the vibration generating device. Groove-like rail parts are provided partially in the outer circumferential surface of the holder at the opposite ends thereof in the same linear direction, and the side end part of a notched circuit board or a part on the housing side of the apparatus is inserted into each of the groove-like rail parts, thus holding and securing the vibration generating device at an arbitrary vertical position against the surface of the circuit board in the apparatus.

Abstract: A motor-mounting structure includes a case (101,102) containing a motor (2) in which a bearing portion (22) is projected from an end surface (211) of a main body (21), and a pair of brackets (11, 12) provided on the case (101, 102) and configured to pinch the bearing portion (22) of the motor (2). Elastic pinching arms (11a, 11a) are provided on a leading end portion of one of the pair of brackets and configured to elastically pinch the bearing portion. An interval (11b) between the elastic pinching arms (11a, 11a) is set to be smaller than outer diameter of the bearing portion (22).

Abstract: A motor may include a bearing made of resin for rotatably supporting one end part of the rotor shaft, and an urging member attached to a bearing holder and abutted with a pressurization face of the bearing to urge the bearing toward a side of the rotor shaft. A molding material injection gate trace (projection) which has been used when the bearing is resin-molded is positioned at a center portion of the pressurization face. The molding material injection gate trace may be positioned in a recessed part which is formed at a roughly center portion of the pressurization face of the bearing. Further, the urging member may include an urging piece which is formed by cutting a center portion of a metal plate in a ring shape and an opening part is formed in the urging piece.

Abstract: A sensor fastening method and a sensor fastening frame for use therewith are provided. The sensor fastening frame is coupled to a motor stator of a brushless motor having distributed coils and extends over the distributed coils to allow the sensor fastening frame to rotate about the axle of a motor rotor, without interference with the distributed coils. At least a sensor is fastened in position to the sensor fastening frame proximate to one end of the axle of the motor stator for positioning the sensor to detect magnetic field variations of the motor rotor.

Abstract: An axial fan motor comprising: a fan having a rotating shaft and composed of a hub and a plurality of vanes provided around the hub, the fan rotating to generate an air flow; a stator substrate set comprising a stator core, which drives the fan, an insulator, and a substrate; and a venturi having a sleeve, into an inner peripheral side of which a bearing is inserted to support the rotating shaft and to an outer peripheral side of which the stator core is fixed, the venturi being formed on one side thereof with an air suction opening and on the other side thereof with an air discharge mouth, wherein a space is provided between the stator core and the sleeve.

Abstract: A vibration motor having a tubular case, a shaft protruding from a front end of the case, a weight eccentrically fixed to an end of the shaft, and a metallic holder surrounding the case, the holder being surface-mounted on a wiring board by reflow-soldering, wherein the holder has a planate bottom placed on the wiring board, a pair of forward tilting prevention portions that extends up to a position facing the weight is formed at the bottom, a notch is provided on a center line extending along the bottom between the forward tilting prevention portions, and the notch extends from the front end of the forward tilting prevention portions beyond the position facing the weight.

Abstract: A mounting structure for a motor includes a central tube (16), a supporting plate (13) and a motor-stator (30). The central tube includes two positioning blocks (162). The supporting plate includes a mounting block (18). The motor-stator includes a printed circuit board (31) and a stator (33). The stator defines an axis hole (337) for receiving a portion of the tube therein and two positioning grooves (3332) in an inner surface thereof. The printed circuit board defines a cutout (311) therein. One of the stator and the tube is rotated from an unlocked position, where the positioning blocks are located just above the positioning grooves and the mounting block is received in the cutout, to a locked position, where a bottom surface of the positioning blocks abut against a top surface of the stator and the mounting block leaves the cutout and engages with the printed circuit board.

Abstract: In an armature for a brushless motor, a gap is provided between an inner circumferential surface of a cylinder portion of a cover and an outer circumferential surface in a radial direction of the armature. A plurality of non-magnetic spacers having a predetermined distance therebetween are provided in a circumferential direction so as to make contact with the inner circumferential surface of the cylinder portion and the outer circumferential surface of the armature.

Abstract: A retaining structure for motor elements includes an axial tube and a cap. The cap includes a stop and a coupling portion. At lease one motor element is received in the axial tube. The coupling portion of the cap is engaged with a coupling section of the axial tube for securely mounting the cap to the axial tube, with the stop of the cap covering an end of the axial tube to prevent the motor element from disengaging from the axial tube. In another example, the coupling portion of the cap engages with a coupling section on a stator.

Abstract: An electrical machine has a stator, a rotor, which features a rotor shaft, and at least one bearing for the rotor. The bearing is supported on a bearing block, which in its turn rests on an end face of the stator or on an insulating end disk positioned on an end face of the stator and/or is supported inside the stator.

Abstract: A metallic member 22 is integrated with a molded rotor 12, and a bearing 16 is held to the rotor 12 through this metallic member 22. At that time, a washer 24 is secured to the metallic member, and the rotating portion of the bearing is held by this washer, thereby improving holding property and durability of the bearing. A stopper plate 21 for limiting the displacement of the output shaft of a motor is used as the metallic member, thereby enabling holding property and durability of the bearing to increase without increasing the number of components. The base-end side of the metallic member 22 is integrally in-mold molded with the rotor 12, which enables the metallic member 22 to be firmly held.

Abstract: A brushless motor includes a substantially flat attachment plate and a circuit board. The attachment plate includes a plurality of motor attachment portions and a base portion arranged to interconnect the motor attachment portions. The circuit board is arranged on an upper surface of the base portion and includes a first area to which electronic parts are attached. The upper surfaces of the motor attachment portions are arranged higher than the upper surface of the base portion. The height of the upper surface of the circuit board in the first area is substantially equal to or greater than the height of the upper surfaces of the motor attachment portions.

Abstract: An axial impact liner comprises a bearing liner having a shear member and a pocket. A spring and a supply of oil may be included within the pocket. In the event of an axial load, such as from a bearing or main rotor failure, the axial impact liner can shear in the axial direction and absorb the energy of the axial load by forcing the shear member into the oil filled pocket and against the spring. The pocket comprises a volume capable of accommodating the full axial distance that the rotor could move.

Abstract: In a solder reflow process, a vibration motor is stably mounted on a circuit board by changing the design of a partial shape of a soldered motor holder without changing the design of a vibration motor body and securing a sufficient soldering area to completely perform solder bonding to prevent a soldered portion of a motor holder from peeling off the circuit board. A surface mount type vibration motor is provided, wherein the pedestals of a motor holder include the support plates that are in contact with stationary lands on a surface of a circuit board and extend in the axial direction of an output shaft, end portions of the support plates are arranged between the position of an eccentric weight and the end surface of the eccentric weight along the axial direction, and the support plates are not arranged just under an axis of said output shaft where the distance between the weight and the circuit board is minimum.

Abstract: According to the present invention, there is provided an automotive alternator which includes a rotor, a stator, a rolling bearing, and a bearing cover. The rotor includes a rotary shaft and works to create a rotating magnetic filed. The stator works to generate an AC power in the rotating magnetic field created by the rotor. The rolling bearing rotatably supports the rotary shaft of the rotor. The bearing cover covers an axial end of the rolling bearing. The bearing cover has flexibility in an axial direction of the rotary shaft and is fitted in place with the flexibility thereof.

Abstract: A flat vibration motor with a structure for coupling a stator portion and a base portion thereof is provided. The flat vibration motor includes a rotor portion, a stator portion, a fixing mount, and a base portion. The rotor portion generates vibrating force when rotating. The stator portion houses and couples with the rotor portion to allow the rotor portion to rotate. The fixing mount extends from the stator portion and includes a plurality of fixing arms formed to extend upward therefrom. The base portion includes a terminal for supplying electricity to the stator portion, and a plurality of fixing grooves formed thereon for respectively coupling with the fixing arms. The structure prevents a disruption of an electrical connection between a terminal and a control circuit board caused by a shift or disengagement in a coupling between the base portion and the stator portion.

Abstract: The invention relates to a stator of an electric motor, comprising a laminated stator core (1) which is provided with electrical insulation (8) composed of plastic, and a stator bushing (3) which can be pressed into a central axial opening (2) in the laminated stator core (1), forms a bearing seat for a rotor shaft (10) and is composed of metal. In order to reduce the manufacturing complexity, with the aim at the same time to reduce the amount of noise developed and to improve the electrical insulation of the bearing seat, the invention proposes that the laminated stator core (1) and the metallic stator bushing (3) which is pressed into the laminated stator core (1) are at least partially surrounded by a extrusion coating (8), which is composed of plastic and forms the insulation (8).

Abstract: [Problems] A surface mount-type vibration motor and an installation structure for a surface mount-type vibration motor, where soldered portions are prevented from separating from a circuit board without requiring any design change in a vibration motor body. [Means for Solving the Problem] A section where a motor holding section 31 of a motor holder 30 and motor support sections 32 of the motor holder 30 are connected is bent in an arc shape having elasticity to form the motor holder 30, the motor holding section 31 holding a vibration motor body 2 to which an elastic holder 8 is attached, the motor support sections 32 being arranged along a circuit board 3. First contact sections 52 and second contact sections 53 are formed in the connection section such that distal ends of the first and second contact sections are of a band-like shape projecting toward the inside of the vibration motor body 2.

Abstract: An electric motor assembly in a vehicle powertrain is provided with a generally annular stator fit within an interior cavity of the powertrain defined by a housing. Roll pins are fit between the housing and the stator. The stator may have a plurality of first geometric features and the housing a plurality of second geometric features. The first geometric features are be configured to align with the second geometric features when the stator is fit within the cavity, with the roll pins fit between the housing and the stator at the aligned first and second geometric features. A method of assembling the electric motor assembly is also provided.

Abstract: A motor unit for use with a motor-driven device may include a motor main body, having a stator and a turning shaft protruding from the stator; and a mounting plate for installing the motor main body on the motor driven device to which driving power of the motor main body is transmitted. The mounting plate may be structured by cutting a metal plate, and the mounting plate may include a tabular base plate and a stator support The tabular base plate may have a connecting section for connection to the motor-driven device, and the stator support rises from the tabular base plate and may be fixed to the stator.

Abstract: An electromagnetic exciter includes a casing having a cylindrical side wall with first and second end openings. A suspension supports a magnetic circuit assembly vibratably in the cylindrical side wall. The suspension has a ring-shaped outer section integrally formed along the peripheral edge of the second end opening of the cylindrical side wall, an inner section provided at the radial center of the cylindrical side wall, and a connecting section that interconnects the inner and outer sections. The inner, outer and connecting sections are integrally molded with the casing.

Abstract: In a compressor and driving motor assembly, the driving motor is a hybrid permanent magnet motor and/or has a rotor mounted directly on the drive shaft of the compressor, the drive shaft acting as a cantilever supporting the rotor.

Abstract: A compact fan motor including a motor body having a tubular case accommodating a rotor, a permanent magnet, and brushes, and a pair of spring terminals that are connected to the brushes, sticks out from a peripheral wall of the tubular case, and has elasticity in a direction perpendicular to an axis of rotation of a shaft; an impeller fixed to the shaft sticking out from a front end of the tubular case; a holder having a case accommodating portion that is provided in a housing accommodating the motor body and impeller and has an inner wall surface extending in the direction of the axis of rotation of the shaft, and a motor body insertion opening provided at an edge of the case accommodating portion; and a pair of conductors provided on the inner wall surface of the holder while contacting with the spring terminals.

Abstract: A vibration motor having mounting hardware with a width dimension able to be kept within a thickness of a motor case, that is, a vibration motor provided with a vibration motor body attaching an eccentric weight to a motor shaft sticking out from a bearing part of a motor case and attaching a pair of motor terminals to a plastic end cap closing an opening of the motor case and with mounting hardware carrying this vibration motor body and to be set on a board, wherein the mounting hardware has a raised bottom flat-shaped part facing a barrel circumference of the motor case, oriented in an axial direction, and to be bonded to mounting patterns on the board, a collar-shaped support piece extending from this raised bottom flat-shaped part and fit over the bearing part in the axial direction, and a plug-in support piece extending from the raised bottom flat-shaped part to the opening side and plugged into first and second positioning slots provided in the plastic end cap in the axial direction.

Abstract: A motor assembly to minimize deformation of a vibration-proof member and to achieve stable motor mounting configuration, as well as an image forming apparatus employing the motor assembly, are disclosed. The motor assembly includes a motor, a fixing member to which the motor is fixed, a vibration-proof member provided between the motor and the fixing member to prevent vibration of the motor from being transmitted to the fixing member, and a reinforcing piece having a predetermined strength to prevent relative movement between the motor and the fixing member.

Abstract: A method is disclosed for enhancing the operational capacity of a hobby servo having an internal potentiometer and internal components that limit a rotational capacity. The method comprises disconnecting the internal potentiometer, modifying the internal components to increase the rotational capacity, and connecting the hobby servo to an external potentiometer. The method further comprises operably connecting the hobby servo to an auxiliary shaft that is displaced from the hobby servo, connecting the external potentiometer to the auxiliary shaft, and utilizing feedback from the external potentiometer.

Abstract: The disclosed system, device and method for an electric motor generally includes a hollow shaft having a first end and a second end. An electromagnet is coupled to the hollow shaft, where the electromagnet is suitably configured to emit an electromagnetic field, and where the electromagnet is disposed between the first end and the second end of the hollow shaft. A drum substantially encases the electromagnet, where the drum is coupled to rotate about an axis of the hollow shaft in response to the electromagnetic field emitted by the electromagnet.

Abstract: A magnetic pre-pressurizing section for pre-pressurizing the inner ring of the bearing in the axial direction by a difference of magnetic forces of permanent magnets of the two rotors is arranged. The magnetic pre-pressurizing section is constructed by a difference of a magnetizing amount for forming permanent magnets 8b, 9b arranged in the respective rotors. The magnetic pre-pressurizing section is also constructed by a difference of distances of an air gap L1 of a stator 2 and a permanent magnet 8b1, and an air gap L2 of the stator 2 and a permanent magnet 9b1. The magnetic pre-pressurizing section is also constructed by a difference of thicknesses of the rotating axis direction of a permanent magnet 8b1 and a permanent magnet 9b2 arranged in the respective rotors.

Abstract: A motor holder receives a motor main body and includes a plurality of ribs, which are provided to an inner peripheral surface of the motor holder and are engaged with an outer peripheral surface of a motor yoke to hold the motor main body. The ribs are arranged symmetrically about a reference line, which is perpendicular to a rotational axis of a rotatable shaft and passes through a rotational center of the rotatable shaft and a circumferential center of each of the two power supply brushes.

Abstract: A vibration damping sleeve for a stator assembly having radial vibration isolator features at both ends is provided. At one end, the vibration damping sleeve comprises a groove for a damping element such as an annular gasket while a plurality of beams circumferentially disposed are at the other end. The plurality of beams may comprise mounting flanges for mounting the stator to a housing support.

Abstract: A cutout portion is formed at an outer peripheral side of a stator placing portion provided in a bearing bush for placing a core back portion of a stator. A connecting wire portion of a coil of the stator is inserted through a gap formed between the cut-out portion and the core back portion. The connecting wire portion is, therefore, prevented from being caught between a lower surface of the core back portion and an upper surface of the stator placing portion when the stator is secured on the stator placing portion by a first fixing member.

Abstract: A motor end bell assembly includes an end bell having an opening in a face of the end bell for accessing terminals of the motor. An additional aperture in the end bell facilitates passage of a power cord through the end bell. A cover at least partially closes the opening and is formed as a single piece of material. The cover includes a tab for at least partially closing the aperture.

Abstract: A rotor has a rim that diverges from its peripheral portion. Accordingly, the rim more securely couples with a shaft. More specifically, the rotor has a support member with a peripheral portion and an interior rim. The interior rim defines a central opening and, as noted above, diverges from the peripheral portion. The rotor also has a shaft coupled within the central opening of the support member.

Abstract: A fan housing. The fan housing mounted on a frame of a system includes a main body, a first section, a second section and a fixing portion. Both the first and second sections are disposed on the main body. A gap is formed between the first and second sections. The fixing portion is formed in the gap.

Abstract: A motor magnetic pre-stressing apparatus includes a stator and a rotor. The rotor is pivoted with the stator. The stator includes a lower insulating frame and a magnetic-guiding ring, and the magnetic-guiding ring is installed on the lower insulating frame. The rotor has a magnetic element, and the magnetic element has even radial magnetic poles. Thereby, by utilizing the attraction between magnetic-guiding ring and the magnetic element, a magnetic pre-stressing force is generated to absorb the rotor downwards so that the rotor rotates stably and smoothly.

Abstract: Since the rotating unit is disposed so that the drive part, which constitutes the rotating unit, is located in the inner side of the bent portion with the curved surface of the Cableveyor in the side of the straight axis, there is no problem occurs by locating the drive part connected with the rotating unit in the inner side of the bent portion of the Cableveyor. Therefore, the dead space formed in the inner side of the bent portion of the Cableveyor can be used effectively.

Abstract: An anti-twist device retains an actuating motor (10), which is placed in a force-fitting and/or form-fitting manner onto the projecting driveshaft (22) of a pivotable shut-off flap (62) of a gas transport tube (34), in particular of an HVAC tube or flue gas tube for a building, in a longitudinally moveable manner. Arranged at an adjustable axial distance (a) from the driveshaft (22) is at least one clamp (36) which secures the actuating motor (10). The parallel limbs (46) of the preferably substantially U-shaped clamp (36) are of resilient design, wherein in each case one end-side, inwardly projecting latching lug (48) is formed for holding down the actuating motor (10).

Abstract: A vehicle alternator has a rotor fixed to a rotary shaft, a stator placed around the rotor so that the stator faces an outer periphery of the rotor, and a frame accommodating the rotor and stator. The frame has a drive frame and a rear frame. The drive frame has stay parts. One stay part projects toward the outside of the vehicle alternator, and has a U-shaped hole formed at a front thereof. A circular part with a cut part is formed in the stay part. The circular part with the cut part is coaxial with the U-shaped hole and is larger in diameter and central angle than the U-shaped hole. The stay part is fastened to a mounting bracket of an internal combustion engine while the cut part of the circular part in the stay part is fitted to a step part formed in a fixing bolt.

Abstract: A spindle motor, which includes a bearing to rotatably support a rotating shaft, a bearing holder to securely hold the bearing therein, a base to securely support the bearing holder thereon, a thrust washer aligned at the upper end thereof with the upper end of the base in the same horizontal plane and supporting the rotating shaft in a thrusting direction, a thrust washer cover to receive the thrust washer, and a bearing holder support securely installed between the thrust washer cover and the base and supporting the bearing holder. The bearing holder support is secured to the bearing holder and covers both the lower end of the bearing and part of the lower end of the bearing holder. The bearing holder support includes a protrusion inserted into a depression formed on the lower end of the bearing holder and an edge caulked to the base.

Abstract: A support (200) is described for fixing an electric motor (3) to a tub (6) of a washing machine (1) or similar household appliance. The electric motor (3) is of the type with external rotor (70), for driving in rotation a drum (2) supported in the tub (6); the electric motor (3) is provided with a control circuit board (100) associated with a heat dissipator (33). The heat dissipator (33) is integrally formed with the support (33).

Abstract: A fan motor includes a frame (10) and a motor (30). The frame includes a supporting plate (13) and a central tube (16). A pair of arms (181) extends upwardly from the supporting plate and spaces from each other to form a gap (184) therebetween. Each arm has a barb (182) at a top end thereof. The motor includes a circuit board (31) and a stator (33). The stator defines an axial hole (338) for receiving the central tube therein. The circuit board defines a fixing hole (312) therein corresponding to the pair of arms. The pair of arms extend through the fixing hole with the barbs of the pair of arms abutting on the circuit board. A pin (191) is inserted into the gap between the pair of the arms.