JP2009153273A - Signal generator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a signal generator capable of improving vibration resistance at a connecting portion between an electrical cord and a terminal fitting, and eliminating troublesome work of applying adhesive to the connecting portion. <P>SOLUTION: In this signal generator 11, a signal generator body having a signal coil wound around an iron core and a permanent magnet magnetically jointed to the iron core is housed in an insulation case 12. Terminal fittings 16, 16 connected to the both sides of the signal coil are attached to a wall portion 12b of the insulation case 12. Cord holders 12g, 12h that retain a pair of electrical cords 17, 17 where core conductors are soldered respectively to the terminal portions 16a, 16a of a pair of the terminal fittings in such a state to run along the back face of the insulation case 12 are fixed to the wall portion 12b on the back face side of the insulation case 12. The cord holders have portions 12h, 12h that individually retain a pair of the electrical cords 17, 17 at a position adjacent to the terminal portions 16a, 16a of the terminal fitting. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a signal generator that constitutes a signal generator together with a rotor having an inductor.

  Inductor-type signal generators are often used to obtain rotation information of a mechanical device having a rotating shaft such as an engine. This type of signal generator is composed of a rotor having an inductor composed of a protrusion or a recess, and a signal generator that detects a rotor inductor and generates a pulse signal.

  For example, as shown in Patent Document 1, the signal emission is generated by an iron core having a magnetic pole portion facing a rotor inductor, a signal coil wound around the iron core, and one magnetic pole. Having a permanent magnet magnetically coupled to the iron core, a front side wall portion, a rear side wall portion, left and right side wall portions, and a ceiling wall portion, and a magnetic pole portion at the tip of the iron core as the front surface And an insulating case containing the signal-emitting body in the state where the side wall portion is penetrated and exposed to the outside.

  In the signal generator configured as described above, a pair of terminal fittings to which both ends of a signal coil are connected are attached to an insulating case, and a pair of electric cords for taking out a signal induced in the signal coil to the outside Are soldered to the terminal portions of the pair of terminal fittings.

  18 to 22 show the signal generator 1 disclosed in Patent Document 1. FIG. In these drawings, reference numeral 2 denotes a front side wall portion 2a, a rear side wall portion 2b, left and right side wall portions 2c, 2d, and a ceiling wall portion 2e. The base plate 4 made of a ferromagnetic material such as 4 is provided at the tip of the iron core of the signal generator body and is exposed to the outside through the front side wall portion 2a of the insulating case. A pair of terminal fittings attached to portions of the left and right side wall portions 2c and 2d near the ceiling wall portion 2e. The terminal fittings 6 and 6 are connected to both ends of the signal coil in the insulating case 2.

  The base plate 3 is provided in a state in which both wings protrude from the bottom 2f of the insulating case 2 to the left and right outwards, and is erected from an intermediate portion of the substrate 3a, and is inserted into the case 2. The base plate 3 is magnetically coupled to the permanent magnet by contacting the other magnetic pole of the permanent magnet of the signal generator main body with the upright plate portion 3b. Mounting holes 3c and 3c are formed at both ends of the base plate 3, and the signal generator 1 is fixed to the engine case or the like by screws passing through these mounting holes. It is made to oppose the surface provided with the inductor of the rotor (not shown) attached to the crankshaft etc. of the engine. The base plate 3 constitutes a part of a magnetic path of magnetic flux flowing through the permanent magnet and iron core of the signal generator main body and the rotor inductor.

  The back surface 2b of the insulating case 2 is provided with a cord holder 2g having a cord passage hole 2g1 (see FIG. 20) having a size capable of being press-fitted in a state where the pair of electric cords 7 and 7 are arranged. As shown in FIG. 2, the core wires of the electric cords 7 and 7 that are press-fitted and held in the cord passage hole 2g1 are inserted into U-shaped grooves 6a and 6a (see FIG. 20) provided in the terminal fittings 6 and 6, respectively. And soldered to the terminal fittings 6 and 6.

The signal generator 1 is an iron core when a rotor inductor (not shown) starts facing the magnetic pole portion 4 of the core of the signal generator main body accommodated in the insulating case 2 and ends the facing. A pulse signal having a different polarity is induced in the signal coil by a change in magnetic flux generated in the signal coil.
JP-A-11-98796

  In the conventional signal emission shown in FIGS. 18 to 22, as shown in FIGS. 21 and 22, the electric cords 7 and 7 are suspended between the terminal fittings 6 and 6 and the cord holder 2g. It is in a floating state. Therefore, when this signal emission is attached to a mechanical device such as an engine where intense vibration occurs, the electric cords 7 and 7 are vibrated between the terminal fittings 6 and 6 and the cord holder 2g. The stress concentrates on the roots of the soldered portions 7a and 7a between the cores of the electrical cords 7 and 7 and the terminal fittings 6 and 6, and the cores of the electrical cords 7 and 7 are rooted at the soldered portions 7a and 7a. There was a break in the part.

  For this reason, in the conventional signal generation, it is necessary to apply an adhesive to the connecting portion between the electric cords 7 and 7 and the terminal fittings 6 and 6 in order to prevent the electric cord from being disconnected, which is troublesome.

  In the conventional signal generator, when the core wires of the electric cords 7 and 7 are soldered to the terminal portions of the terminal fittings 6 and 6, the soldering iron and the solder are held by hand and are electrically Since it is necessary to hold the core wires of the cords 7 and 7 so as not to be detached from the groove 6a of the terminal portion of the terminal fitting, it is inevitable that the soldering work is troublesome.

  An object of the present invention is to provide a signal generator that improves the vibration resistance of a connection portion between an electric cord and a terminal fitting, and can eliminate the troublesome work of applying an adhesive to the connection portion. .

  Another object of the present invention is to improve the vibration resistance of the connecting portion between the electric cord and the terminal fitting, so that the troublesome work of applying an adhesive to the connecting portion can be omitted, and the core wire of the electric cord can be removed. An object of the present invention is to provide a signal coil that can be easily soldered to a terminal portion of a terminal fitting.

The present invention provides a signal generator body having a signal coil wound around an iron core having a magnetic pole portion at the tip, a permanent magnet magnetically coupled to the iron core, and a state in which the magnetic pole portion at the tip of the iron core is exposed to the outside. In this case, it is intended for signal emission including an insulation case in which the signal emission main body is housed.
In the present invention, a pair of terminal fittings having one end connected to both ends of the signal coil in the insulating case and a terminal portion provided on the other end side, the terminal portion being led out from one side surface of the insulating case Is attached to the insulating case, and a cord holder for holding a pair of electric cords, the core wires of which are soldered to the terminal portions of the pair of terminal fittings, along the one side surface of the insulating case. It is fixed on one side. The said cord holder is comprised so that it may have a part which hold | maintains a pair of electric cord separately in the position adjacent to the terminal part of a pair of terminal metal fittings.

  As described above, a pair of terminal fittings are provided on one side surface of the insulating case, and a pair of electric cords whose core wires are soldered to the terminal portions of the pair of terminal fittings are adjacent to the terminal portions of the pair of terminal fittings. When a cord holder having a portion to be held individually at a position is fixed to the same side surface as the side surface of the insulating case provided with the terminal portions of the pair of terminal fittings, the electric cord is adjacent to the terminal portion of the terminal fitting. Therefore, when the electric cord vibrates, it is possible to prevent vibration from being transmitted to the soldered portion between the core wire of the electric cord and the terminal fitting. It is possible to prevent stress concentration from occurring in the soldering portion of the wire and disconnecting the core wire of the electric cord.

  In addition, as described above, when the pair of electric cords are individually held by the cord holder at positions adjacent to the terminal portions of the pair of terminal fittings, when the core wire of the electric cord is soldered to the terminal fittings, The cord holder can keep the core wire of the electrical cord engaged with the terminal part of the terminal fitting, and it is necessary to hold the core wire of the electrical cord against the terminal fitting with a jig or the like when soldering Since there is no, soldering work can be simplified.

  In a preferred aspect of the present invention, the cord holder is configured to hold the pair of electric cords in which the core wires are soldered to the terminal portions of the pair of terminal fittings at a position apart from the pair of terminal fittings. The cord holder and the pair of second cord holders that further individually hold the pair of electric cords held by the first cord holder at positions adjacent to the terminal portions of the pair of terminal fittings.

  The pair of second cord holders may be formed integrally with the insulating case, or may be integrally formed with the pair of terminal fittings. In the case of providing a pair of second cord holders for a pair of terminal fittings, for example, an insulating barrel for holding and holding an insulating coating of an electric cord on each of the pair of terminal fittings is provided, What is necessary is just to use it as a cord holder of 2.

  In another preferred aspect of the present invention, the cord holder has a first cord receiving groove having a size capable of press-fitting a pair of electric cords together, and is connected to the terminal portions of the pair of terminal fittings, respectively. A first cord holding portion that holds the pair of electric cords in a state of being collectively received in the first cord receiving groove at a position apart from the terminal portions of the pair of terminal fittings, and a first cord receiving groove A pair of second cord receiving grooves provided so as to branch from the ends of the pair of terminal fittings and extend to positions adjacent to the terminal portions of the pair of terminal fittings; A pair of second cord holding portions for branching and holding the pair of held electric cords in a state of being individually received in the pair of second cord receiving grooves, so that the whole has a Y-shape. Composed. In this case, the pair of second cord receiving grooves are provided so as to have a size capable of individually press-fitting the electric cord.

  When the cord holder is configured as described above, the entire portion of the pair of electric cords along the side surface of the insulating case can be restrained and held by the cord holder, so that the electric cord is suspended in the vicinity of the pair of terminal fittings. It prevents vibration in the floating state and prevents vibration from being transmitted to the soldered part between the core wire of the electrical cord and the terminal fitting. Can be surely prevented from breaking.

  Usually, an insulation case for signal emission has at least a front side wall, a rear side wall, left and right side walls, and a ceiling wall, and the magnetic pole at the tip of the iron core is exposed to the outside through the front side wall. In this state, the signal generating body is configured to be housed inside.

  In a preferred aspect of the present invention, when the insulating case is configured as described above, one end is connected to both ends of the signal coil in the insulating case, and a pair of electrical cord core wires is soldered to the other end. A pair of terminal fittings formed with terminal portions are attached side by side in a state of penetrating the portion near the ceiling wall portion of the back side wall portion of the insulating case, and each terminal portion of the pair of terminal fittings is an insulating case It is derived | led-out outside from the back side wall part. In addition, a pair of electrical cords are placed on the outer surface of the rear side wall portion of the insulating case on a straight line extending in a direction perpendicular to the parallel arrangement direction of the pair of terminal fittings at a position equidistant from the terminal portions of the pair of terminal fittings. The first cord holder to be held together and the pair of electric cords that are led out from the first cord holder and extend to the pair of terminal fittings are individually held at positions adjacent to the terminal portions of the pair of terminal fittings. The pair of second cord holders are fixed, and the pair of electric cords are held by the first cord holder and the second cord holder in a state along the rear side wall portion of the insulating case.

  The first cord holder includes a cord passage hole or a cord passage groove having a size capable of press-fitting a pair of electric cords at once, and the pair of electric cords is bundled in the cord passage hole or the cord passage groove. And is preferably configured to be held in an accepted state.

  In a preferred aspect of the present invention, the second cord holder includes a U-shaped groove having a size capable of press-fitting a cord to be soldered to each terminal fitting, and each electric cord is press-fitted into the groove. Configured to hold in a state.

  In this case, each second cord holder may be provided integrally with the insulating case, or may be provided integrally with each terminal fitting.

  In another preferred aspect of the present invention, each second cord holder includes a cord press-fitting hole having an opening on each terminal fitting side and on the opposite side of each terminal fitting, and each cord is inserted into the cord press-fitting hole. It is configured to hold in a press-fitted state.

  A pair of terminal fittings having one end connected to both ends of the signal coil in the insulating case and soldered to the other end of the pair of electric cords are connected to the ceiling wall of the rear side wall of the insulating case. The cord holder fixed to the outer surface of the rear side wall portion of the insulating case when attached side by side in a state of penetrating the portion near the portion has a size capable of press-fitting a pair of electric cords together. A first cord holding portion provided with a first cord receiving groove extending along a straight line extending at a position equidistant from the terminal portion of the terminal fitting in a direction perpendicular to the parallel direction of the pair of terminal fittings; A first cord receiving groove includes a pair of second cord receiving grooves provided so as to branch from ends of the pair of terminal fittings and extend to positions adjacent to the terminal portions of the pair of terminal fittings. 1 code protection And a pair of second cord holding portions for branching and holding the pair of electric cords held by the portions individually received in the pair of second cord receiving grooves, and exhibiting a Y shape as a whole It may be configured as described above.

  Even in the case where the cord holder is configured as described above, since the entire portion along the outer surface of the rear side wall portion of the insulating case of the pair of electric cords can be restrained and held by the cord holder, the pair of terminal fittings It prevents the electric cord from vibrating in the air in the vicinity of the wire and prevents the vibration from being transmitted to the soldered part between the core wire of the electric cord and the terminal fitting. It is possible to reliably prevent the core wire of the electric cord from being disconnected at the soldering portion with the metal fitting.

  As described above, in the signal generator according to the present invention, a pair of terminal fittings are provided on one side surface of the insulating case, and a pair of electric cords whose core wires are soldered to the terminal portions of the pair of terminal fittings, respectively. A cord holder having a portion to be held at a position adjacent to the terminal portion of the terminal fitting is fixed to the same side as the side of the insulating case provided with the terminal portion of the pair of terminal fittings, and the electric cord is connected to the terminal of the terminal fitting. Since it is held by the cord holder at a position adjacent to the part, when the electric cord vibrates, it is possible to prevent vibration from being transmitted to the soldered part between the core wire of the electric cord and the terminal fitting. It is possible to prevent stress concentration from occurring in the soldered portion between the cord core wire and the terminal fitting, and the electrical cord core wire from being disconnected.

  According to the present invention, since the pair of electric cords are individually held by the cord holder at positions adjacent to the terminal portions of the pair of terminal fittings, when the core wire of the electric cord is soldered to the terminal fitting, The core wire can be held in a state of being engaged with the terminal portion of the terminal fitting. Therefore, when soldering the core wire of the electric cord to the terminal fitting, it is not necessary to hold the core wire against the terminal fitting with a jig or the like, so that the soldering operation can be simplified.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1 to 6 show a signal emitting electron 11 according to the first embodiment of the present invention. FIG. 1 is a side view of the signal emitting electron according to the present embodiment, and FIGS. It is the rear view and bottom view of an electron emission. FIG. 4 is a top view of the signal generator, and FIGS. 5 and 6 are a side view and a rear view, respectively, showing a state where an electric cord is connected to the signal generator according to this embodiment.

  1 to 4, reference numeral 12 denotes an insulating case having a front side wall part 12a, a rear side wall part 12b, left and right side wall parts 12c and 12d, and a ceiling wall part 12e, and an opening is provided in a bottom part 12f. In the insulating case 12, a signal generator main body (not shown) and a part of a base plate 13 made of a ferromagnetic material such as iron are accommodated.

  The signal generator main body has a signal coil wound around an iron core having a magnetic pole portion at the tip and a permanent magnet magnetically coupled to the iron core, and exposes the magnetic pole portion 14 at the tip of the iron core to the outside. It is accommodated in the insulating case 12 in a state of being damaged. Since the configuration of the signal emitting main body is already known, a detailed description thereof will be omitted.

  The base plate 13 is disposed so that an intermediate portion thereof closes the opening of the bottom portion of the insulating case 12, and both the left and right wing portions are disposed in a state of protruding from the bottom portion 12f of the insulating case 12 to the left and right outwards. And an upright plate portion 13b erected at a right angle from an intermediate portion of the substrate portion 13a. The upright plate portion 13b is inserted into the insulating case from the opening of the bottom portion 12f of the insulating case 12, and the upright plate portion 13b is brought into contact with the other magnetic pole of the permanent magnet of the signal generator main body, whereby the base plate 13 is magnetically coupled to the permanent magnet. At both ends of the base plate 13, mounting holes 13c and 13c are formed.

  In the present embodiment, the insulating resin is injected into the insulating case 12 through the hole 13d provided in the base plate 13 and the opening at the bottom of the insulating case 12, so that the mold that covers the components housed in the insulating case 12 is covered. The part is formed.

  Reference numeral 15 denotes a plate-like base plate pressing portion that is formed so as to cover the outer surface of the central portion of the substrate portion 13a of the base plate 13 when the mold portion in the insulating case 12 is formed. The base plate pressing portion 15 is connected to the mold portion in the insulating case 12 by a resin filled in a hole 13d provided in the base plate 13, and includes a resin filled in the base plate pressing portion 15 and the hole 13d of the base plate. Thus, the base plate 13 is mechanically firmly coupled to the insulating case 12.

  In the present invention, a pair of terminal fittings 16 and 16 having one end connected to both ends of the signal coil in the insulating case 12 and provided with the terminal portions 16a and 16a on the other end side connect the terminal portions 16a and 16a, respectively. A pair of electrical cords attached to the insulation case 12 in a state of being led out from one side surface of the insulation case and having a core wire soldered to the terminal portions 16a and 16a of the pair of terminal fittings 16 and 16, respectively. A cord holder that is held along one side surface of the insulating case 12 is fixed to one side surface of the insulating case 12. The cord holder is provided with a portion for individually holding the pair of electric cords at positions adjacent to the terminal portions 16a and 16a of the pair of terminal fittings 16 and 16.

  In the present embodiment, the cord holder is disposed at a position away from between the pair of terminal fittings 16, 16, and a pair of core wires are soldered to the terminal portions 16 a, 16 a of the pair of terminal fittings 16, 16. A first cord holder 12g that collectively holds the electric cords 17 and 17 and a pair of electric cords 17 and 17 held by the first cord holder 12g are connected to the terminal portions 16a and 16a of the pair of terminal fittings 16 and 16, respectively. And a pair of second cord holders 12h and 12h that are individually held at positions adjacent to each other, and a pair of terminal fittings 16 and 16, a first cord holder 12g, and a second cord holder 12h and 12h, Are provided on the same side surface of the insulating case 12.

  In the present embodiment, the pair of terminal fittings 16, 16, the first cord holder 12 g, and the second cord holders 12 h, 12 h are attached to the back side wall portion of the insulating case 12. The pair of terminal fittings 16 and 16 are attached side by side in a state of penetrating the portion of the back side wall portion 12b of the insulating case 12 near the ceiling wall portion 12e. Further, the first cord holder 12g is positioned at an equal distance from the pair of terminal fittings 16 and 16 on the outer surface of the rear side wall portion 12b of the insulating case 12 with respect to the direction in which the pair of terminal fittings 16 and 16 are arranged. It is provided in a state of being positioned on a straight line O1-O1 (see FIG. 2) extending in a certain direction. The illustrated first cord holder 12g is formed of a U-shaped protrusion projecting from the back side wall portion of the insulating case 12, and a pair of electric cords 17 and 17 arranged side by side are provided inside the first cord holder 12g. A cord through hole 12g1 (see FIG. 3) having a size capable of being press-fitted in a lump is formed.

  The pair of second cord holders 12h and 12h are arranged at positions adjacent to the terminal portions 16a and 16a of the terminal fittings 16 and 16 derived from the outer surface of the rear side wall portion 12b of the insulating case 12, respectively. It is provided in a state of being positioned closer to the terminal fittings 16 and 16 side. Each second cord holder 12h is provided with a groove 12h1 having a U-shaped cross section that is capable of press-fitting the electric cord 17 soldered to the terminal portion 16a of each terminal fitting 16. It is configured to hold it in a state of being press-fitted into 12h1. In the second holders 12h and 12h, the respective grooves 12h1 and 12h1 have left and right side wall parts 12c and 12d between the end part on the ceiling wall part 12e side and the end part on the bottom part 12f side on the back of the insulating case 12. It is provided so as to extend in parallel, and one end in the longitudinal direction of each groove 12h1 is opened on the corresponding terminal fitting 16 side, and the other end in the longitudinal direction of each groove 12h1 is opened on the opposite side to the terminal fitting 16. Yes. In order to prevent the cord from vibrating between each second cord holder 12h and the terminal portion 16a of the corresponding terminal fitting, the distance between each second cord holder 12h and the terminal portion 16a of the corresponding terminal fitting. Is set to be sufficiently small, or each second cord holder 12h is preferably provided in contact with the terminal portion 16a of the corresponding terminal fitting.

  The pair of electric cords 17 and 17 are subjected to press-fitting into the cord passage hole 12g1 of the first cord holder 12g after the insulation coating at the respective distal end portions is removed and the distal ends of the respective core wires are exposed, Passed through the hole. The electric cords 17 and 17 passed through the cord passage hole 12g1 of the first cord holder 12g are further press-fitted into the grooves 12h1 and 12h1 of the first cord holders 12h and 12h and held in the insulating case 12. The leading ends of the respective core wires are inserted into U-shaped grooves provided in the terminal portions 16a and 16a of the terminal fittings 16 and 16, respectively. In this state, the core wires of the electric cords 17 and 17 are soldered to the terminal portions 16a and 16a of the terminal fittings 16 and 16.

  As described above, in the signal generator 11 according to the present embodiment, a position adjacent to the pair of terminal fittings 16 and 16 in addition to the first holder 12g that collectively holds the pair of electric cords 17 and 17. A pair of second holders 12h and 12h for individually holding the pair of electric cords 17 and 17 are provided, and the electric cords 17 and 17 are disposed at positions adjacent to the terminal portions 16a and 16a of the terminal metal fitting. Since the electric cords 17 and 17 vibrate, it is possible to prevent vibration from being transmitted to the soldered portion between the electric cord core wire and the terminal fitting when the electric cords 17 and 17 vibrate. It is possible to prevent stress concentration from occurring in the soldered portion between the terminal and the metal fitting, and the core wire of the electric cord from being disconnected.

  Further, according to the present invention, the pair of electric cords 17 and 17 are individually held by the second cord holders 12h and 12h at positions adjacent to the terminal portions 16a and 16a of the pair of terminal fittings 16 and 16, respectively. Before the core wires of the cords 17 and 17 are soldered to the terminal fittings 16 and 16, the core wires of the electric cord can be held in an engaged state with the terminal portions of the terminal fittings. As described above, when the core wires of the electric cords 17 and 17 are held in a state of being engaged with the terminal portions of the terminal metal fittings, the core wires of the electric cords 17 and 17 are soldered to the terminal metal fittings 16 and 16 when the core wires are soldered. Since it is not necessary to hold down against the terminal fitting, the soldering operation can be simplified.

  Further, as in the present invention, when the terminal fittings 16, 16, the first cord holder 12g, and the second cord holders 12h, 12h are provided on the same surface of the insulating case, the first cords of the electric cords 17, 17 are provided. Since the length of the portion existing between the holder 12g and the terminal portions 16a and 16a of the terminal fittings 16 and 16 can be shortened, the vibration of the electric cord generated when the signal emission is subjected to vibration of the engine or the like. Can be suppressed.

  Further, in the conventional signal emission, as shown in FIG. 22, the terminal metal fitting 6 and the electric cord 7 are arranged so as to protrude outward from the left and right side surfaces of the insulating case, so that the width of the signal emission is small. In the present invention, the terminal metal fittings 16 and 16, the first cord holder 12g, and the second cord holders 12h and 12h are provided on the same surface of the insulating case, so that the electric cord 17 is insulated. Projecting outward from the left and right side surfaces of the case can be prevented, and the width of the signal emission can be reduced to make the signal emission compact.

  In the embodiment shown in FIGS. 1 to 6, the second cord holder 12h has grooves Uh-shaped grooves 12h1 and 12h1 having a size capable of press-fitting the electric cord 17 soldered to each terminal fitting 16. In addition, each electric cord 17 is configured to be held in a state of being press-fitted into the groove, but the second cord holder used in the present invention is not limited to the one shown in the above example.

  FIG. 7 shows signal emission according to the second embodiment of the present invention. In the example shown in FIG. 7, each second cord holder 12 h ′ is connected to the terminal portion 16 a side of each terminal fitting 16. In addition, each terminal fitting 16 is formed in a cylindrical shape provided with a through hole 12h1 'having an opening on the side opposite to the terminal portion 16a. In this case, the through hole 12h1 ′ is formed in a size that allows the electric cord 17 to be press-fitted.

  Further, in the above embodiment, the first cord holder 12g has the shape having the cord passage hole 12g1, but the shape of the first cord holder 12g used in the present invention is limited to that shown in the above embodiment. Not.

  FIG. 8 shows a third embodiment of the present invention. In this embodiment, the first cord holder 12g ′ has an opening 12g1a ′ opened in a direction perpendicular to the back surface of the insulating case 12 in the width direction. Is formed in a shape provided with a cord passage groove 12g1 'at the center.

  9 to 12 show a fourth embodiment of the present invention. In this embodiment, one cord holder 20 is fixed to the back side wall portion 12 b of the insulating case 12. The illustrated cord holder 20 has a first cord receiving groove 20a1 having a size capable of press-fitting a pair of electric cords 17 and 17 at a time, and is separated from the terminal portions 16a and 16a of the terminal fittings 16 and 16. The pair of electric cords 17 along the straight line O1-O1 extending in a direction perpendicular to the juxtaposition direction of the terminal fittings 16 and 16 at a position equidistant from the terminal portions 16a and 16a of the terminal fittings 16 and 16 at the position. , 17 in the first cord receiving groove 20a1 in a state of being collectively received and a pair of terminal fittings 16, 16 of the first cord receiving groove 20a1. A pair of second cord receiving grooves 20b1 and 20b1 provided so as to branch from the end on the side and extend symmetrically to positions adjacent to the terminal portions 16a and 16a of the pair of terminal fittings 16 and 16, respectively. A pair of second code holding portion 20b which, whole and a 20b is configured to exhibit a Y-shape. The pair of second cord receiving grooves 20b1 and 20b1 have a size capable of individually press-fitting the pair of electric cords 17 and 17, respectively, and are paired and held together by the first cord holding portion 20a. The electric cords 17 and 17 are branched so as to be held in a state of being individually received in the pair of second cord receiving grooves 20b1 and 20b1. The cord holder 20 is formed integrally with the back side wall portion of the insulating case 12 when the insulating case 12 is molded.

  In the present embodiment, the pair of electric cords 17, 17 are press-fitted into the first cord receiving groove 20 a 1 provided in the first cord holding portion 20 a and held together, and then branched, The two cord holding portions 20b and 20b are individually held by being press-fitted into the second cord receiving grooves 20b1 and 20b1. Since the electric cords 17 and 17 are individually held at positions adjacent to the terminal portions 16a and 16a of the terminal fittings 16 and 16 by the second cord holding portions 20b and 20b, the core wires and terminals of the electric cords 17 and 17 are provided. It is possible to prevent vibration from being transmitted to the soldered portions of the metal fittings 16 and 16 with the terminal portions 16a and 16a.

  In the present embodiment, almost the entire portion of the pair of electrical cords 17, 17 along the outer surface of the rear side wall portion of the insulating case can be restrained and held by the cord holder 20. The electric cords 17 and 17 are prevented from vibrating in the vicinity in the air, and vibration is transmitted to the soldered portions between the core wires 17a and 17a of the electric cords 17 and 17 and the terminal portions 16a and 16a of the terminal fittings. Can be surely prevented.

  13 to 17 show a fifth embodiment of the present invention. In this embodiment, a pair of second cord holders for holding an electric cord at a position adjacent to the terminal portions 16a 'and 16a' of the pair of terminal fittings 16 'and 16' are provided integrally with the pair of terminal fittings, respectively. ing. As shown in the developed view of FIG. 13, the terminal fitting 16 ′ used in the present embodiment includes a first band plate portion 21 a having a width that is slightly narrower than the outer diameter of the insulating coating of the electric cord 17, and the electric cord. A second strip plate portion 21b extending from the central portion of one longitudinal end of the first strip plate portion 21a with a width dimension substantially equal to the outer diameter of the 17 core wires, and the width direction of the first strip plate portion 21a A pair of first barrel forming plate portions 21c, 21c protruding from both ends of the first pair, and a pair of second barrel forming plate portions 21d, 21d protruding from both ends in the width direction of the second strip plate portion 21b, A first extension 21e extending from the other end in the longitudinal direction of the first strip 21a, a second extension 21f extending from the tip of the second strip 21b, and a first extension At the tip of the hole 20g penetrating the portion 21e and the second extension 20f Is formed as shown in FIGS. 14 to 16 by bending the conductive plate 21 punched into a shape having a for vignetting notches 21h.

  In the terminal fitting 16 'shown in FIG. 14 to FIG. 16, the first barrel forming plate portion 21c raised from the both ends in the width direction of the first strip plate portion 21a by being bent at right angles to the same side. , 21c constitutes an insulating barrel that holds and holds the insulation coating of the electric cord 17, and the insulating barrel and the first strip plate portion 21a form a U-shaped cord receiving groove for press-fitting and holding the core wire of the electric cord. The 2nd cord holder which has inside is constituted. Also, the second band plate portion 21b and the second barrel forming plate portion that is bent up from both ends in the width direction of the band plate portion to the same side as the first barrel forming plate portions 21c and 21c and raised. 21d and 21d constitute a terminal portion 16a 'to which the core wire of the electric cord is soldered. Further, the first extension portion 21e and the second extension portion 21f are bent to the opposite side of the first barrel forming plate portions 21c and 21c and the second barrel forming plate portions 21d and 21d. When the insulating case 12 is molded, the extension portions 21e and 21f are inserted into the back side wall portion 12b of the insulating case 12 as shown in FIG. Combined with the case. One extension portion 21f penetrates the back side wall portion 12b of the insulating case and is introduced into the insulating case, and a signal coil terminal 22 (not shown) is inserted into a notch portion 21h provided at the tip (one end of the terminal fitting). And soldered. The hole 21g provided in the extension portion 21e is provided in order to increase the bonding strength between the extension portion 21e and the insulating case by filling a part of the resin constituting the insulating case into the hole.

  Each electric cord 17 is held in a state of being press-fitted into a groove portion of a second cord holder constituted by insulating barrels (21c, 21c) provided integrally with each terminal fitting 16 '. In this case, by inserting the electric cord between the insulating barrels (21c, 21c) and then deforming the insulating barrel so as to narrow the interval between the insulating barrels, the electric cord at a position adjacent to the terminal portion 16a 'is used. Can be held more reliably.

It is a side view of the signal emission concerning the 1st embodiment of the present invention. It is a rear view of the signal emission concerning the 1st embodiment of the present invention. It is a bottom view of the signal emission according to the first embodiment of the present invention. It is a top view of the signal emission according to the first embodiment of the present invention. It is the side view which showed the state which connected the electric cord to the signal generator concerning the 1st Embodiment of this invention. It is the rear view which showed the state which connected the electric cord to the signal generator concerning the 1st Embodiment of this invention. It is a bottom view of the signal emission according to the second embodiment of the present invention. It is a top view of the signal emission according to the third embodiment of the present invention. It is a side view of the signal emission according to the fourth embodiment of the present invention. It is a rear view of the signal emission concerning the 4th Embodiment of this invention. It is a side view in the state where the electric cord of the signal generation concerning the 4th embodiment of the present invention was connected. It is a rear view in the state where the electric cord of the signal generation concerning the 4th embodiment of the present invention was connected. It is an expanded view of the metal plate pierce | punched in order to comprise the terminal metal fitting used in the 5th Embodiment of this invention. It is a top view of the terminal metal fitting used in the embodiment. It is a right view of the terminal metal fitting used in the embodiment. It is a left view of the terminal metal fitting used in the embodiment. It is the front view which showed the state which connected the electric cord to the terminal metal fitting attached to the insulation case in the embodiment with a part of back side wall part of the insulated case cut. It is a side view of the conventional signal emission. It is a rear view of the conventional signal emission. It is a bottom view of the conventional signal emission. It is the side view which showed the state which connected the electric cord to the conventional signal generator. It is the rear view which showed the state which connected the electric cord to the conventional signal generator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Signal emission 12 Insulation case 12a Front side wall part 12b Rear side wall part 12c Side wall part 12d Side wall part 12e Ceiling wall part 12f Bottom part 12g 1st code holder 12h 2nd code holder 13 Base plate 16, 16 'Terminal metal fitting 17 Electric cord 20 cord holder 20a first cord holding portion 20b second cord holding portion

Claims (10)

In a state where a signal coil wound around an iron core having a magnetic pole at the tip, a signal generator body having a permanent magnet magnetically coupled to the iron core, and a magnetic pole at the tip of the iron core are exposed to the outside In signal emission with an insulation case containing the signal emission main body inside,
A pair of terminal fittings having one end connected to both ends of the signal coil in the insulating case and a terminal portion provided on the other end side, the terminal portion being led out from one side surface of the insulating case Attached to the insulation case,
A cord holder that holds a pair of electric cords, each of which has a core wire soldered to the terminal portion of the pair of terminal fittings, along the one side surface of the insulating case is fixed to the one side surface of the insulating case And
The cord holder has a portion for individually holding the pair of electric cords at positions adjacent to the terminal portions of the pair of terminal fittings;
A signal generator characterized by.   The cord holder is a first cord holder that collectively holds a pair of electric cords that are located away from the pair of terminal fittings and core wires are soldered to the terminal portions of the pair of terminal fittings, respectively. The pair of second cord holders that further individually hold the pair of electric cords held by the first cord holder at positions adjacent to the terminal portions of the pair of terminal fittings. Signal emission.   The signal generator according to claim 2, wherein the pair of second cord holders are provided integrally with the pair of terminal fittings, respectively. The cord holder includes a first cord receiving groove having a size capable of press-fitting the pair of electric cords in a lump, and the pair of electric cords connected to the pair of terminal fittings is connected to the pair of electric cords, respectively. A first cord holding portion that holds the first cord receiving groove in a state of being collectively received in the first cord receiving groove at a position away from the terminal portion of the terminal fitting, and the pair of terminal fitting sides of the first cord receiving groove A pair of second cord receiving grooves provided so as to branch from the ends of the pair of terminals and to extend to positions adjacent to the terminal portions of the pair of terminal fittings, and are held by the first cord holding portion. And a pair of second cord holding portions for branching and holding the pair of electric cords in a state of being individually received in the pair of second cord receiving grooves, the whole being configured to have a Y shape. ,
The pair of second cord receiving grooves have a size capable of individually press-fitting the electric cord;
The signal electron generator according to claim 1. A signal generator body having a signal coil wound around an iron core having a magnetic pole at the tip, a permanent magnet magnetically coupled to the iron core, a front side wall, a rear side wall, left and right side walls, and a ceiling wall And an insulating case in which the signal generator body is housed in a state where the magnetic pole portion at the tip of the iron core penetrates the front side wall portion and is exposed to the outside, and the magnetic pole at the tip of the iron core In the signal emission that is exposed to the outside through the front side wall of the insulating case,
A pair of terminal fittings having one end connected to both ends of the signal coil in the insulating case and a terminal portion for soldering a core wire of a pair of electric cords to the other end are formed on the rear side wall of the insulating case. Each terminal part of the pair of terminal fittings is led out from the back side wall part of the insulating case and attached side by side in a state of penetrating the portion of the part near the ceiling wall part,
On the outer surface of the back side wall portion of the insulating case, the pair of terminal fittings is located at a distance equidistant from the terminal portions of the pair of terminal fittings on a straight line extending in a direction perpendicular to the parallel arrangement direction of the pair of terminal fittings. A first cord holder that holds electric cords in a lump, and the pair of electric cords that are led out from the first cord holder and extend toward the pair of terminal fittings are adjacent to the terminal portions of the pair of terminal fittings, respectively. A pair of second cord holders that are held individually at a position to be fixed,
The pair of electric cords are held by the first cord holder and the second cord holder in a state along the rear side wall portion of the insulating case,
A signal generator characterized by.   The first cord holder includes a cord passage hole or a cord passage groove having a size capable of collectively press-fitting the pair of electric cords, and the pair of electric cords is placed in the cord passage hole or the cord passage groove. 6. The signal generator according to claim 5, wherein the signal generator is configured to be held in a state of being collectively received.   Each of the second cord holders has a U-shaped groove having a size capable of press-fitting an electric cord to be soldered to the terminal portion of each terminal fitting, and each electric cord is press-fitted into the groove. 7. The signal generator according to claim 5, wherein the signal generator is configured to be held.   Each second cord holder includes a cord press-fitting hole having an opening on the terminal portion side of each terminal fitting and on the side opposite to the terminal portion of each terminal fitting, and each cord is press-fitted into the cord press-fitting hole. The signal emission according to claim 5 or 6 configured to be held in a state.   The signal generator according to claim 7, wherein the pair of second cord holders are respectively provided integrally with the pair of terminal fittings. A signal generator body having a signal coil wound around an iron core having a magnetic pole at the tip, a permanent magnet magnetically coupled to the iron core, a front side wall, a rear side wall, left and right side walls, and a ceiling wall And an insulating case in which the signal generator body is housed in a state where the magnetic pole portion at the tip of the iron core penetrates the front side wall portion and is exposed to the outside, and the magnetic pole at the tip of the iron core In the signal emission that is exposed to the outside through the front side wall of the insulating case,
A pair of terminal fittings having one end connected to both ends of the signal coil in the insulating case and a terminal portion for soldering a core wire of a pair of electric cords to the other end are formed on the rear side wall of the insulating case. Each terminal part of the pair of terminal fittings is led out from the back side wall part of the insulating case and attached side by side in a state of penetrating the portion of the part near the ceiling wall part,
A cord holder that holds the pair of electric cords along the back side wall of the insulating case is fixed to the outer surface of the back side wall of the insulating case.
The cord holder has a size that allows the pair of electric cords to be press-fitted in a lump, and is positioned equidistant from the pair of terminal fittings in a direction perpendicular to the parallel arrangement direction of the pair of terminal fittings. A first cord holding portion having a first cord receiving groove extending along an extending straight line, and branching from an end portion of the first cord receiving groove on the pair of terminal fittings side of the pair of terminal fittings. A pair of second cord receiving grooves provided so as to extend to positions adjacent to the terminal portions, respectively, and a pair of electric cords held by the first cord holding portion are branched to make the pair of second cords A pair of second cord holding portions that are held in a state of being individually received in the cord receiving grooves, and are configured to be entirely Y-shaped,
A signal generator characterized by.

Images