Patent Publication Number: US-2003227225-A1

Title: Vibrating actuator device

Description:
FIELD OF INDUSTRIAL USE  
       [0001] This invention is an improvement to a vibrating actuator mechanism that has the function of generating vibrations, as well as the sound functions of generating voice signals and buzzer sounds.  
       PRIOR TECHNOLOGY  
       [0002] Vibrating actuator devices are generally constituted as shown in FIG. 27, with a cylindrical housing  1  as a frame, a diaphragm  3  that has a voice coil  2  attached to its inner surface with voice coil  2  lead wires  2   a  ( 2   b ) extending to the outside of the housing  1 , the diaphragm  3  being fitted and fixed into the open end  1   a  of the housing  1  and the voice coil  2  lead wires  2   a  ( 2   b ) being fixed by soldering to terminal fittings  4   a  ( 4   b ) of the terminal seats  1   b  ( 1   c ) that project outward from the side wall of the housing  1 , with terminal fittings  4   a  ( 4   b ) serve as power feed terminals of electrical circuit.  
       [0003] To the electrical circuit, the vibrating device has a magnet  6  which is fixed a pole piece  5 , a yoke  7  that holds the magnet  6  together with the pole piece  5  separated from the pole piece  5  by a magnetic gap G. The yoke  7  is incorporated within the housing  1  and supported by thin-sheet suspensions  8   a ,  8   b , and the voice coil  2  is inserted into the magnetic gap G between the pole piece  5  and the yoke  7 , thus forming the magnetic circuit. Further, a cap  9  pierced with multiple sound holes  9   a ,  9   b  . . . covers the open end Id of the housing  1 .  
       [0004] Within the constitution of this vibrating actuator device, the two suspensions  8   a  ( 8   b ) that support the magnetic circuit are formed in a roughly circular disk shape, with a central inner ring  80  that is fitted and fixed to the outer periphery of the yoke, as shown in FIG. 28, and three arms  81  to  83  that extend outward, at equal intervals, around the outer periphery of the inner ring  80 .  
       [0005] Depending on the type of equipment in which this vibrating actuator device is mounted, and in connection with the mounting space within the external case of the equipment, the device must be assembled in a roughly rectangular housing that is relatively narrow in one direction. In assembling this vibrating actuator device, the suspensions described above have an external shape that is roughly circular and large, and so is difficult to assemble in a housing that is roughly rectangular and relatively narrow in one direction.  
       [0006] This invention is focused primarily on the shape of the suspensions and the assembly structure, and has the purpose of providing a vibrating actuator device that can be assembled in the magnetic circuit that is stable and has good vibration characteristics, even though the housing is roughly rectangular and relatively narrow in one direction.  
       [0007] In addition, this invention has the purpose of providing a vibrating actuator device that can be assembled in such a way that the lead wires of the voice coil are arranged in a stable manner and breakage of the lead wires can be prevented.  
       [0008] Moreover, this invention has the purpose of providing a vibrating actuator device that has a sturdy magnetic circuit and that can be assembled in such a way that it can display good vibration characteristics.  
       [0009] Further, this invention has the purpose of providing a vibrating actuator device that can be assembled in such a way that the width of the housing does not spread and good shock resistance is available.  
       [0010] In addition to the above, this invention has the purpose of providing a vibrating actuator device that has a magnetic circuit that maintains an even weight balance, and that can be assembled in such a way that it can display good vibration characteristics.  
       DESCRIPTION OF INVENTION  
       [0011] The vibrating actuator mechanism relating to claim 1 of this invention is one that has a housing in the form of a surrounding wall, an electromagnetic circuit with a magnetic gap between a pole piece and a yoke that holds a magnet that is integral with the pole piece, a diaphragm with a voice coil attached to its inner surface, a pair of facing leaf-spring suspensions that support the electromagnetic circuit that are set inside wall of the housing such that the electromagnetic circuit is able to vibrate, the diaphragm being set inside the wall of the housing such that the voice coil is inserted into the magnetic gap and is electrically connected to terminal fittings outside the wall of the housing by lead wires that lead out of the housing, in which there is a rectangular housing that is narrower in one direction, each of the suspensions having two arms that are located in the narrow space of the housing and the suspensions attach with main part that supports the electromagnetic circuit and the arms that extend gradually outward from attachment on the main part of the suspension, with the suspensions assembled on the electromagnetic circuit with their arms extending in the same directions and tips of the two arms of each suspension set the walls of narrow width of the housing, such that the electromagnetic circuit can vibrate in the two suspensions.  
       [0012] The vibrating actuator mechanism relating to claim 2 of this invention is one in which the suspensions are attached to the electromagnetic circuit with the same direction of extension for the arms of the two suspensions and the arm attachments in facing positions, and with the tips of the two arms of each suspension set in seats near the corners of the sides of the narrow widths of the housing, such that the electromagnetic circuit can vibrate in the two suspensions.  
       [0013] The vibrating actuator mechanism relating to claim 3 of this invention is one in which the suspensions are attached to the electromagnetic circuit with the same direction of extension for the arms of the two suspensions and the arms of the two suspensions offset in degree of rotation relative to a perpendicular centerline through the suspension, and with the tips of the arms of the two suspensions set in different positions in the narrow walls of the housing, such that the electromagnetic circuit can vibrate in the two suspensions.  
       [0014] The vibrating actuator mechanism relating to claim 4 of this invention is one in which there are two suspensions having different vibration characteristics.  
       [0015] The vibrating actuator mechanism relating to claim 5 of this invention is one that has a housing that is narrower in one direction with a roughly elliptical, track-shaped inner wall, with grooves in the edge of the narrow wall of the housing to accommodate the lead wires of the voice coil and the voice coil lead wires from the edge of the diaphragm being laid in the grooves and connected to the terminal fittings.  
       [0016] The vibrating actuator mechanism relating to claim 6 of this invention is one that has a yoke that comprises a flat elliptical receptacle with a U-shaped cross section within which is a magnet that is fixed to and integral with a pole piece and a peripheral flange that extends out from the open edge of the receptacle; two suspensions each formed of a circular main part and two arms, which are fitted around the outer periphery of the receptacle in the order of first suspension, spacer ring, and second suspension, after which a stop ring is fitted over the receptacle to hold the second suspension in place to form an electromagnetic circuit assembled as a unit with the outer flange of the yoke, the stop ring and two suspensions.  
       [0017] The vibrating actuator mechanism relating to claim 7 of this invention is one in which the electromagnetic circuit is assembled in the housing by assembling a spacer ring that projects stopper outward from the position corresponding to the outside, and the stopper used to control lateral vibration together with the yoke, the suspensions, and the stop ring with linear edges on the outer edge corresponding to the projection base of the stopper, and then accommodating the stopper of the spacer ring in a concavity in the inner surface of the wall on the long side of the housing.  
       [0018] The vibrating actuator mechanism relating to claim 8 of this invention is one in which the electromagnetic circuit has a spacer ring and a yoke with matching semicircular cutouts on the outer edges, and is assembled by determining the position with the support pin of an assembly jig that fits the cutout edges of the yoke and spacer ring, and placing the suspensions and the spacer ring around the yoke.  
       [0019] The vibrating actuator mechanism relating to claim 9 of this invention is one that has a housing in the form of a surrounding wall, an electromagnetic circuit with a magnetic gap between a pole piece and a yoke that holds a magnet that is integral with the pole piece, a diaphragm with a voice coil attached to its inner surface, a pair of facing leaf-spring suspensions that support the electromagnetic circuit that are set inside wall of the housing such that the electromagnetic circuit is able to vibrate, the diaphragm being set inside the wall of the housing such that the voice coil is inserted into the magnetic gap and is electrically connected to terminal fittings outside the wall of the housing by lead wires that lead out of the housing, in which there is a housing that is narrower in one direction, two suspensions having main part that supports the electromagnetic circuit and attachment on the main part and two arms that are located in the narrow space of the housing, and the attachments attached symmetrically on the main part and the arms that extend outward from the attachment on the main part of the suspension in opposite directions, and the suspensions assembled on the electromagnetic circuit with their arms crossing in opposite directions and the tips of the two arms of each suspension set in the narrow walls of the housing, such that the electromagnetic circuit can vibrate in the two suspensions.  
       [0020] The vibrating actuator mechanism relating to claim 10 of this invention is one that has a housing that is narrower in one direction with a roughly elliptical, track-shaped inner wall, with grooves in the edge of the narrow wall of the housing to accommodate the lead wires of the voice coil and the voice coil lead wires from the edge of the diaphragm being laid in the grooves and connected to the terminal fittings.  
       [0021] The vibrating actuator mechanism relating to claim 11 of this invention is one in which there are two suspensions having different vibration characteristics.  
       [0022] The vibrating actuator mechanism relating to claim 12 of this invention is one that has a yoke that comprises a flat elliptical receptacle with a U-shaped cross section within which is a magnet that is fixed to and integral with a pole piece and a peripheral flange that extends out from the open edge of the receptacle; two suspensions each formed of a circular main part and two arms, which are fitted around the outer periphery of the receptacle in the order of first suspension, spacer ring, and second suspension, after which a stop ring is fitted over the receptacle to hold the second suspension in place to form an electromagnetic circuit assembled as a unit with the outer flange of the yoke, the stop ring and two suspensions.  
       [0023] The vibrating actuator mechanism relating to claim 13 of this invention is one in which the electromagnetic circuit is assembled in the housing by assembling a spacer ring that projects stopper outward from the position corresponding to the outside, and the stopper used to control lateral vibration together with the yoke, the suspensions, and the stop ring with linear edges on the outer edge corresponding to the projection base of the stopper, and then accommodating the stopper of the spacer ring in a concavity in the inner surface of the wall on the long side of the housing.  
       [0024] The vibrating actuator mechanism relating to claim 14 of this invention is one in which the electromagnetic circuit has a spacer ring, suspensions and a yoke with matching semicircular cutouts on the outer edges, and is assembled by determining the position with the support pin of an assembly jig that fits the cutout edges of the yoke, the suspensions, and spacer ring, and placing the suspensions and the spacer ring around the yoke. 
     
    
    
     BRIEF EXPLANATION OF THE DRAWINGS  
     [0025]FIG. 1 is a cross section (taken along line A-D-D of FIG. 3) that shows, from the long side, the internal constitution of the vibrating actuator device of the first example of implementation of this invention.  
     [0026]FIG. 2 is a cross section that shows, from the short side, the internal constitution of the vibrating actuator device in FIG. 1.  
     [0027]FIG. 3 is a plane view, from the diaphragm side, of the vibrating actuator device in FIG. 1.  
     [0028]FIG. 4 is a plane view, from the yoke side, of the vibrating actuator device in FIG. 1.  
     [0029]FIG. 5 is an oblique view of one example of the suspensions in the constitution of the vibrating actuator device in FIG. 1.  
     [0030]FIG. 6 is an oblique view of an example, different from that in FIG. 5, of the suspensions in the constitution of the vibrating actuator device in FIG. 1.  
     [0031]FIG. 7 is an explanatory detail that shows the seat for the suspensions in FIG. 5.  
     [0032]FIG. 8 is an explanatory detail that shows the spacer piece used in assembly of the suspensions in FIG. 6.  
     [0033]FIG. 9 is a plane view, from the yoke side, of the vibrating actuator device in a mode that differs from the first example of implementation of this invention.  
     [0034]FIG. 10 is an oblique view of the suspensions in the constitution of the vibrating actuator device in FIG. 9.  
     [0035]FIG. 11 is a plane view of the yoke in the constitution of the electromagnetic circuit of this actuator device.  
     [0036]FIG. 12 is a cross section taken along line A-A of the yoke in FIG. 11.  
     [0037]FIG. 13 is a cross section taken along line B-B of the yoke in FIG. 11.  
     [0038]FIG. 14 is a plane view of the suspension spacer ring in the constitution of this actuator device.  
     [0039]FIG. 15 is a cross section taken along line A-A of the spacer ring in FIG. 14.  
     [0040]FIG. 16 is a cross section taken along line B-B of the spacer ring in FIG. 14.  
     [0041]FIG. 17 is a plane view of the suspension stop ring in the constitution of this actuator device.  
     [0042]FIG. 18 is a side view of a terminal fitting in the constitution of this actuator device.  
     [0043]FIG. 19 is an explanatory detail that shows the assembly of the vibrating actuator device with the terminal fitting in FIG. 18 into the equipment.  
     [0044]FIG. 20 is a cross section that shows, from the long side, the internal constitution of the vibrating actuator device of a second example of implementation of this invention.  
     [0045]FIG. 21 is a plane view, from the yoke side, of the vibrating actuator device of FIG. 20.  
     [0046]FIG. 22 is a plane view of the housing in the constitution of the vibrating actuator device of FIG. 20.  
     [0047]FIG. 23 is a plane view of one of the springs making up the double suspension in the constitution of the vibrating actuator device of FIG. 20.  
     [0048]FIG. 24 is a plane view of the other of the springs making up the double suspension in the constitution of the vibrating actuator device of FIG. 20.  
     [0049]FIG. 25 is a plane view that shows another example of the yoke.  
     [0050]FIG. 26 is a cross section taken along line C-C of the yoke in FIG. 25.  
     [0051]FIG. 27 is a cross section of a conventional vibrating actuator device.  
     [0052]FIG. 28 is a plane view of one example of the suspension assembled in the conventional vibrating actuator device of FIG. 27.  
    
    
     OPTIMUM MODE OF IMPLEMENTATION OF INVENTION  
     [0053] &lt;First Example Of Implementation&gt; 
     [0054] The following explanation refers to FIGS.  1  to  19 . The vibrating actuator device of the example of implementation illustrated is of the floating type in which the electromagnetic circuit is made to vibrate by the reaction force against the force generated by the voice coil. By impressing on the voice coil a vibration signal that matches the resonant frequency of the electromagnetic circuit the electromagnetic circuit is made to vibrate at a frequency of 130 to 140 Hz and perform as a vibrator, and impressing a signal with a frequency of 800 Hz to 4 kHz makes just the diaphragm oscillate to perform the electro-kinetic function type of reproducing a call signal or communicant voice.  
     [0055] This vibrating actuator device is constituted in inverted form so that when it is mounted in a portable telephone or other equipment, the cap mounting side where there is little flux leakage faces the outside of the telephone case or the other equipment case, and the diaphragm mounting side where there is greater flux leakage faces the substrate of the circuit board. Further, the voice coil lead wires are run from the diaphragm mounting side to the cap mounting side so that the solder mound that electrically connects and fixes the voice coil lead wires to the terminal fittings does not interfere with contact between the terminal fittings and the power supply lands of the circuit board.  
     [0056] This basic mode is constituted with the framework of a housing  10  which is a surrounding wall as shown in FIGS. 1 and 2, within which are found an electromagnetic circuit E in which a yoke  13  supports a magnet  12  to which a pole piece  11  if fixed as a single unit so that a magnetic gap G is maintained between the yoke  13  and the pole piece  11 , and a diaphragm  15  that has a voice coil  14  attached to its inner surface. The electromagnetic circuit E is supported with a double suspension structure consisting of two suspensions  16   a ,  16   b , and each of the suspensions  16   a ,  16   b  is stretched between the inner surfaces of the walls of the housing  10 .  
     [0057] The diaphragm  15  is stretched within the walls of the housing  10  with the voice coil  14  inserted into the magnetic gap G; the lead wires  14   a  ( 14   b ) that lead out of the housing  10  from the voice coil  14  are electrically connected to the terminal fittings  17   a  ( 17   b ) that are found outside the wall of the housing  10 , and a cap  18  that is perforated with a number of openings covers the open end of the housing  10 .  
     [0058] As shown in FIGS. 3 and 4, the housing  10  is of normal width in one direction (hereafter “the long side (X direction)”) in connection with vibration transmission efficiency, but is relatively narrow in the other direction (hereafter “the short side (Y direction)”) in connection with the space for mounting, and the inner periphery has the shape of a roughly elliptical track. On this housing  10 , terminal fittings  17   a ,  17   b  are mounted on terminal seats  100   a ,  100   b  separated by a central slit  100   c  for use as positive and negative poles and provided on the outer housing  10 .  
     [0059] There are on this housing  10  concave grooves  10   a ,  10   b  in the wall on the narrow side, through which the lead wires  14   a ,  14   b  of the voice coil  14  are laid. These concave grooves  10   a ,  10   b  run in an arc from the inner periphery of the housing  10  and connect to the slit  100   c  of the terminal seats  100   a ,  100   b . There are also, on the inside walls on the long side (X direction), concavities  10   c ,  10   d  that receive projecting stoppers on the spacer ring to prevent lateral vibration, as described hereafter.  
     [0060] In addition, in the space on the narrow side of the housing  10  there are seats in the inner wall for attachment of the suspensions to be described hereafter. Around the inner edge of the wall there is a step  10   e  (see FIG. 1) into which the outer edge of the mounting side of the diagram  15  is fitted. The outer edge of the wall on the covered side also has a step  10   f  that fits with the standing rim of the cap  18 .  
     [0061] The electromagnetic circuit E that is accommodated inside this housing  10  has a spacer ring  19  and a stop ring  20  as shown in FIGS. 1 and 2, and is supported by a double suspension structure that has two suspensions that fit around the outside of the yoke  13 . This double suspension structure includes suspensions  16   a ,  16   b  as shown in FIGS. 4, 5 and  6 , or another suspensions  16   a ′,  16   b ′ as shown in FIGS. 9 and 10.  
     [0062] Each suspension  16   a ,  16   b  or  16   a ′,  16   b ′ (corresponding components of both structures will be keyed with the same codes hereafter) are located within the space of the short side (Y direction) of the housing  10  as common structures; has attachments  161   a ,  161   b ,  161   a ′,  161   b ′ in symmetrical positions that connect with the outer edge of the circular main portions  160 ,  160 ′ that support the electromagnetic circuit E; has two arms  162   a ,  162   b ,  162   a ′,  162   b ′ that become gradually more distant from the main parts  160 ,  160 ′ as they extend away from the attachments  161   a ,  161   b ,  161   a ′,  161   b ′; has tips  163   a ,  163   b ,  163   a ′,  163   b ′ on the arms  162   a ,  162   b ,  162   a ′,  162   b ′ that attach to the walls of the housing  10 ; and is made of leaf spring material.  
     [0063] As shown in FIG. 5, the suspensions  16   a ,  16   b  have arms  162   a ,  162   b  that extend in the same direction and are assembled on the electromagnetic circuit E with the attachments  161   a ,  161   b  in corresponding positions. The tips  163   a ,  163   b  of the corresponding arms  162   a ,  162   b  of the suspensions  16   a ,  16   b  are assembled by fitting into narrow seats near the corners of the sides of different width of the housing  10 . The tips  163   a ,  163   b  of the arms  162   a ,  162   b  of the suspensions  16   a ,  16   b  can face opposite directions (see FIG. 5) or they can face the same direction (see FIG. 6).  
     [0064] The suspensions  16   a ,  16   b  shown in FIG. 5 fit into the two steps  101   a,    101   b  of the narrow seats  101  ( 102 ) near the corner of the sides of different widths of the housing  10 , as shown in FIG. 7, and the tips  163   a ,  163   b  of arms  162   a ,  162   b  that face in different directions on the same side are installed by fixing each by adhesion to the appropriate step  101   a,    101   b.    
     [0065] For the suspensions  16   a ,  16   b  shown in FIG. 6 there is a spacer piece  103  that has stop pins  103   a ,  103   b  rising from the spacer block  103   c , as shown in FIG. 8, and the stop pins  103   a ,  103   b  are fitted into the stop holes  164   a ,  164   b  formed in the tips  163   a ,  163   b  located on the same sides of the arms  162   a ,  162   b . By this means the spacer block  103   c , intervening between the tips  163   a ,  163   b , is placed into a seat (not illustrated) near the corner of the sides of different widths of the housing  10  and adhered.  
     [0066] The suspensions  16   a ′,  16   b ′, as shown in FIGS. 9 and 10, have arms  162   a ′,  162   b ′ that extend in the same direction with the arms  162   a ′,  162   b ′ offset by rotation around perpendicular centerline Z through the suspensions  16   a ′,  16   b ′, and are assembled on the electromagnetic circuit so that the tips  163   a ′,  163   b ′ of the arms  162   a ′,  162   b ′ can be installed in different positions along the narrow wall of the housing.  
     [0067] The suspensions  16   a ′,  16   b ′ have stop holes  164   a ′,  164   b ′ in the tips  163   a ′,  163   b ′ of the arms  162   a ′,  162   b ′, and the tips  163   a ′,  163   b ′ of the arms  162   a ′,  162   b ′ fit into seats  104   a ,  104   b ,  104   c ,  104   d  of different depths in the inner walls of the housing  10 . Stop pins  105   a ,  105   b ,  105   c ,  105   d  that project from the center of the bottom of seats  104   a ,  104   b ,  104   c ,  104   d  fit and fasten the stop holes  164   a ′,  164   b ′; The suspensions  16   a ′,  16   b ′ are fastened at different locations in the narrow wall of the housing  10  by means of these stop pins.  
     [0068] The suspensions  16   a ,  16   b ,  16   a ′,  16   b ′ can be given different vibration characteristics in order to prevent the energy from vibration of the electromagnetic circuit E from being lost in the arms  162   a ,  162   a ,  162   b ,  162   b ,  162   a ′,  162   a ′,  162   b ′  162   b ′. It is possible when assembling the suspensions  16   a ,  16   b ,  16   a ′,  16   b ′ to have either arms  162   a ,  162   b  or arms  162   a ′,  162   b ′ of one suspension  16   a  or  16   a ′ adhered firmly at the tips  163   a ,  163   b  or  163   a ′,  163   b ′, while the tips  163   a ,  163   b  or  163   a ′,  163   b ′ of arms  162   a ,  162   b  or  162   a ′,  162   b ′ of the other suspension  16   b  or  16   b ′ is attached more flexibly.  
     [0069] Otherwise, it is possible to have one metallic suspension and the other suspension based on a polymer or paper material, or to have both suspensions of the same material but vary the thickness or shape of the suspensions or their arms, and thus have two suspensions with different vibration characteristics.  
     [0070] The yoke  13  that is the base for the electromagnetic circuit E, as shown in FIGS. 11 through 13, is made up of a flat receptacle with a concave cross section within which is fixed a magnet  12  that includes a circular pole piece  11 , an outer flange  131  that extends from the open edge of the receptacle  130 . The outer edge of this yoke  13  is cut out to match the projections of stoppers  191   a ,  191   b  on a spacer ring  19 , and the straight cut edges  132   a ,  132   b  are beveled. There are also projecting pieces  134   a ,  134   b  with semi-circular cutouts  133   a ,  133   b  which are positioned by support pins of the assembly jig during assembly of the electromagnetic circuit.  
     [0071] The spacer ring  19  sandwiched between the suspensions  16   a ,  16   b , as shown in FIGS. 14 through 16, is formed with a ring base  190  of the desired thickness, and stoppers  191   a ,  191   b  to control lateral vibration that project from the sides of the ring base  190  corresponding to the long sides of the housing (the X direction). These stoppers  191   a ,  191   b  are formed with steps  192   a ,  192   b  that engage one of the suspensions by rising an amount corresponding to the thickness of the suspension. The projecting pieces  194   a ,  194   b  with semi-circular cutouts  193   a ,  193   b  which are positioned by support pins of the assembly jig during assembly of the electromagnetic circuit, extend in the direction of the short sides of the housing (the Y direction).  
     [0072] The stop ring  20  of the suspension  16   b  is shaped like an  0  ring, except that it has straight-line cutouts  200   a ,  200   b  on the outer edge that correspond to the stopper projections of the of the spacer ring, as shown in FIG. 17. This stop ring  20 , like other structural parts, can have semi-circular cutouts to be positioned by support pins of the assembly jig during assembly of the electromagnetic circuit.  
     [0073] These structural parts are assembled firmly on the electromagnetic circuit E in the example of implementation shown in FIGS. 1 and 2 by fitting the first suspension  16   a  around the outside of the receptacle  130  until it is in contact with the outer flange  131 , then adding the spacer ring  19  and the second suspension  16   b  in that order, then fitting the stop ring  20  around the outside of the receptacle  130  to hold the second suspension  16   b  in place, so that the two suspensions are assembled firmly as a single unit between the outer flange  131  of the yoke  13  and the stop ring  20 .  
     [0074] When the first suspension  16   a , spacer ring  19  and second suspension  16   b  are fitted in order on the receptacle  130  of the yoke  13 , support pins of an assembly jig (not illustrated) are used to align the semicircular cutouts  133   a ,  133   b ,  193   a ,  193   b  on the various structural parts in the proper positions. By this means it is possible to assemble the structural parts while maintaining an even weight balance overall, even if the structural parts are not circular in shape.  
     [0075] When this electromagnetic circuit E is installed within the housing  10 , the electromagnetic circuit E is supported by a double suspension structure consisting of two suspensions  16   a ,  16   b  that are fitted around the outside of the yoke  13  along with the spacer ring  19  and the stop ring  20  as described above, and the tips  163   a ,  163   b  of the arms  162   a ,  162   b  are attached inside the walls of the short sides (the Y direction) of the housing  10 .  
     [0076] At this stage of assembly of the electromagnetic circuit E, the stoppers  191   a ,  191   b  on the spacer ring  19  are accommodated, with a gap, in the concavities  10   c ,  10   d  on the inside walls on the long sides (the X direction) of the housing  10 . Because the linear edges  132   a ,  132   b ,  200   a ,  200   b  are formed on the yoke  13  and stop ring  20  corresponding to these projections, the stoppers  191   a ,  191   b  can be assembled as designated within the concavities  10   c ,  10   d.    
     [0077] By forming the yoke  13  in the shape shown in FIGS. 25 and 26, one can fix the suspensions  16   a ,  16   b  to the extended surfaces  13   a ,  13   b  by such means as laser welding. By forming the yoke  13  in the shape shown in FIGS. 25 and 26, the spacer ring  19  and the stop ring  20  are not needed when the suspensions  16   a ,  16   b  are fixed in place, and so it is possible to reduce the number of parts and cuts the cost.  
     [0078] Because the lead wires  14   a ,  14   b  of the voice coil  14  follow the arc-shaped grooves  10   a,    10   b  along the short side (the Y direction) of the housing  10  to the slit  100   c  between the terminal seats  100   a ,  100   b , they are emplaced stably, with no danger of wire breakage or peeling of the insulation. In addition, the diaphragm  15  and the cap  18  can be assembled in the usual manner.  
     [0079] With the vibrating actuator device constituted in this way, the electromagnetic circuit E can be installed within the walls of the housing  10  by means of two arms  162   a ,  162   b  located in the same space as the short side (the Y direction) of the housing  10 . Therefore, the electromagnetic circuit E can be installed even in a roughly rectangular housing  10  that is relatively narrow in one direction.  
     [0080] With this vibrating actuator device and the inverted mounting described above, the contact points that are electrically connected to the power feed lands of the circuit board were located on the diaphragm  15  mounting side, and the flat portions to which the voice coil  14  lead wires are electrically connected were located were the terminal fittings  17   a  ( 17   b ) on the cap  18  mounting side. Also, the lead wires  14   a , ( 14   b ) of the voice coil  14  that came out from the housing  10  were laid from the diaphragm  3  mounting side to the cap  9  mounting side, and electrically connected to the flat portions of the terminal fittings  17   a  ( 17   b ), one positive and one negative.  
     [0081] The terminal fittings  17   a  ( 17   b ) are made of a thin metallic sheet with good conductivity, such as phosphor bronze or titanium bronze, and as shown in FIG. 18; it has a box-shaped fitted bend  170  in its center, above which a riser portion  171  maintains a specified interval to the parallel plate portion  172  to which the lead wires are connected. A leaf spring  173  extends downward at a slant from the fitted bend  170  and is then rounded upward with a contact point  174  for connection to the power feed land.  
     [0082] With this terminal fitting  17   a  ( 17   b ), as shown in FIG. 19, as the contact point  174  is pressed against the power feed lands r 1  (r 2 ) on the circuit board P, there is a spring deformation of the contact point  174  and a reliable electrical contact is achieved.  
     [0083] &lt;Second Example Of Implementation&gt; 
     [0084] FIGS.  20  to  24 ,  2 ,  3 , and  11  to  19  show the vibrating actuator device of the second example of implementation of this invention. The second example of implementation of this invention is explained below. Now, the explanation of the second example of implementation is limited to those points which differ from the first example of implementation; constituent parts that are the same as in the first example of implementation are keyed with the same numbers, and duplicate explanations are omitted or simplified.  
     [0085] The points that differ between the second example of implementation and the first example of implementation are the structure of the housing and the structure of the double suspension.  
     [0086] The housing  21  of the second example of implementation, as shown in FIGS. 21 and 22, has four corners (all keyed with the same numbers) located in the narrow space of the housing  21  with suspension attachment seats  21   e ,  21   f ,  21   g ,  21   h  sunk to different depths (see FIG. 20) within the walls and stop pins  21   i ,  21   j ,  21   k ,  211  rising from the center of the bottom of each. On the side where the diaphragm  15  is mounted, a step  21  m that matches the outer edge is formed on the edge of the walls, and on the other side where the cap  19  is attached, there is a step  21   n  on the outer surface of the wall that matches the rising rim of the cap  18 .  
     [0087] The suspensions  22   a ,  22   b  are, as shown in FIG. 21, 23, and  24 , located in the short side (the Y direction), and attachments  221   a ,  221   b ,  221   a ′,  221   b ′ on outer edges of circular main parts  220 ,  220 ′ that support the electromagnetic circuit E are equipped symmetric position. Additionally, each of the suspensions  22   a ,  22   b  have two arms  222   a ,  222   b , or  222   a ′,  222   b ′ that extend in opposite direction of the circumference of the main parts  220 ,  220 ′.  
     [0088] The suspensions  22   a ,  22   b  have, in the arm tips  224   a ,  224   b ,  224   a ′,  224   b ′, holes  223   a ,  223   b ,  223   a ′,  223   b ′ that fit with the stop pins  21   i ,  21   j ,  21   k ,  211  in the seats  21   e ,  21   f ,  21   g ,  21   h , by which means they can be installed in the walls in the short side (the Y direction) of the housing  21 .  
     [0089] In addition, the suspensions  22   a  ( 22   b ) have linear edges  225   a ,  225   b ,  225   a ′,  225   b ′ that are cut on the outer rim to match the projecting pieces of the stoppers on the spacer ring, and semi-circular cutouts  226   a ,  226   b ,  226   a ′,  226   b ′ which are positioned by support pins of the assembly jig during assembly of the electromagnetic circuit. Of these, the linear edges  225   a ,  225   b ,  225   a ′,  225   b ′ are positioned along the long sides (the X direction) of the housing, and the semi-circular cutouts  226   a ,  226   b ,  226   a ′,  226   b ′ are made in the projecting pieces  227   a ,  227   b ,  227   a ′,  227 ′ that face the short sides (the Y direction) of the housing.  
     [0090] These parts are assembled firmly on the electromagnetic circuit E, as shown in FIG. 20 and also in FIG. 2, by first fitting the suspension  22   a  around the outside of the receptacle  130  until it is in contact with the outer flange  131  of the yoke  13 , then adding the spacer ring  19  and the second suspension  22   b  in that order, then fitting the stop ring  20  around the outside of the receptacle  130  to hold the second suspension  22   b  in place, so that the two suspensions are assembled firmly as a single unit between the outer flange  131  of the yoke  13  and the stop ring  20 .  
     [0091] When the electromagnetic circuit E is assembled, the arms  222   a ,  222   a ′,  222   b ,  222   b ′ are fitted around the receptacle  130  of the yoke  13  by positioning them within the space of the narrow width of the housing  21  facing opposite directions to cross each other, as shown in FIG. 21,  
     [0092] When the first suspension  22   a , spacer ring  19  and second suspension  22   b  are fitted in order on the receptacle  130  of the yoke  13 , support pins of an assembly jig (not illustrated) are used to align the semicircular cutouts  226   a ,  226   b ,  193   a ,  193   b  (see FIG. 14)  226   a ′,  226   b ′ on the various structural parts in the proper positions. By this means it is possible to assemble the structural parts while maintaining an even weight balance overall, even if the structural parts are not circular in shape.  
     [0093] When this electromagnetic circuit E is installed within the housing  21 , the electromagnetic circuit E is supported by a double suspension structure consisting of two suspensions that are fitted around the outside of the yoke  13  along with the spacer ring  19  and the stop ring  20  as described above, and the tips  224   a ,  224   b ,  224   a ′,  224   b ′ of the arms are attached inside the walls of the short sides (the Y direction) of the housing  21  by fitting the holes  223   a ,  223   b ,  223   a ′,  223   b ′ of the suspensions  22   a ,  22   b  over the stop pins  21   i ,  21   j ,  21   k ,  211  of the seats  21   e ,  21   f ,  21   g ,  21   h.    
     [0094] Two suspensions  22   a ,  22   b  with different vibration characteristics can be used to prevent the loss of energy by the vibration of the electromagnetic circuit E. With the suspensions  22   a ,  22   b , it is possible to firmly fix the tips  224   a ,  224   b  of one pair of arms  222   a ,  222   b , and fix more flexibly the tips  224   a ,′  224   b ′ of the other pair of arms  222   a ′,  222   b′.    
     [0095] At this stage of assembly of the electromagnetic circuit E, the stoppers  191   a ,  191   b  on the spacer ring  19  are accommodated, with a gap, in the concavities  10   c ,  10   d  on the inside walls on the long sides (the X direction) of the housing  21 . Because the linear edges  132   a ,  132   b  (see FIG. 11),  225   a ,  225   b ,  225   a ′,  225   b ′ (see FIGS. 23 and 24),  200   a ,  200   b  (see FIG. 17) are formed on the yoke  13 , the suspensions  22   a ,  22   b , and the stop ring  20  corresponding to these projections, the stoppers  191   a ,  191   b  can be assembled as designated within the concavities  10   c ,  10   d.    
     [0096] With the vibrating actuator device constituted in this way, the electromagnetic circuit E can be installed within the walls of the housing  21  by means of two arms  222   a ,  222   b ,  222   a ′,  222   b ′ located in the same space as the short side (the Y direction) of the housing  21 . Therefore, the electromagnetic circuit E can be installed even in a roughly rectangular housing  21  that is relatively narrow in one direction. At the same time, because the arms  222   a ,  222   a ′,  222   b ,  222   b ′ positioned within the same space as the short sides (the Y direction) of the housing  21  are assembled in opposite directions crossing each other, the electromagnetic circuit E can be supported with good stability and able to vibrate with good amplitude.  
     [0097] Potential For Industrial Use  
     [0098] As described above, the vibrating actuator device involved in claims 1 to 3 of this invention has a roughly rectangular housing that is relatively narrow in one direction, two suspensions positioned within the narrow space of this housing that each has a main part that supports the electromagnetic circuit with attachments at the outer edge to two arms that extend from the attachments at a gradually increasing distance from the main part, the arms of the two suspensions extending in the same direction and the suspensions being assembled on the electromagnetic circuit. The tips of the arms of each suspension are attached to the walls on the narrow sides of the housing so that the electromagnetic circuit can vibrate by the two suspensions. By this means it is possible to install the electromagnetic circuit and maintain excellent vibration characteristics with good stability, even in a roughly rectangular housing that is relatively narrow in one direction.  
     [0099] The vibrating actuator device involved in claim 4 of this invention has two suspensions with different vibration characteristics, so that it is possible to assemble it without the energy from vibration of the electromagnetic circuit being lost between the arms.  
     [0100] The vibrating actuator device involved in claim 5 of this invention has a housing that is relatively narrow in one direction so that the inner periphery has the shape of a roughly elliptical track and is equipped concave groove that accommodate voice coil lead wire in inner wall on narrow width of the housing, and the voice coil lead wires that extend from the edge of the diaphragm are laid within the concave grooves to connect to the terminal fittings. By this means, it can be assembled with wiring of good stability, there being no breakage of the lead wires or peeling of their insulation.  
     [0101] The vibrating actuator device involved in claim 6 of this invention has two suspensions with a spacer ring between them pressed between the outer flange of the yoke and a stop ring and fixed as a unit to provide an electromagnetic circuit with good structural strength. By this means it can be assembled so as to display excellent vibration characteristics.  
     [0102] The vibrating actuator device involved in claim 7 of this invention has a spacer ring with stoppers to control lateral vibration that project outward from corresponding positions of the periphery, assembled with a yoke, suspensions and a stop ring with linear cuts on the outer edges corresponding to the projecting pieces of the stoppers. The stoppers are accommodated in concavities in the inner wall on the long sides of the housing, allowing assembly of the electromagnetic circuit within the housing. By this means it can be assembled to provide good shock resistance without increasing the width of the housing.  
     [0103] Further, the vibrating actuator device involved in claim 8 of this invention has a yoke and suspensions with matching semi-circular cutouts in their outer edges, and the yoke and suspensions are assembled as the electromagnetic circuit by aligning the cutouts with the support pins of an assembly jig. By this means it is possible to assemble the structural parts while maintaining an even weight balance overall, and to display excellent vibration characteristics.  
     [0104] Further, the vibrating actuator device involved in claim 9 of this invention has a roughly rectangular housing that is relatively narrow in one direction, two suspensions positioned within the narrow space of this housing with arms that extend from in the same directions and faced opposite direction to cross each other, the suspensions being assembled on the electromagnetic circuit. The tips of the arms of each suspension are attached to the walls on the narrow sides of the housing so that the electromagnetic circuit can vibrate in the two suspensions. By this means it is possible to install the electromagnetic circuit and maintain excellent vibration characteristics with good stability, even in a roughly rectangular housing that is relatively narrow in one direction.  
     [0105] The vibrating actuator device involved in claim 10 of this invention has a housing that is relatively narrow in one direction so that the inner periphery has the shape of a roughly elliptical track and the housing is equipped concave groove that accommodate voice coil lead wire in inner wall on narrow width of the housing, and the voice coil lead wires that extend from the edge of the diaphragm are laid within the concave grooves to connect to the terminal fittings. By this means, it can be assembled with wiring of good stability, there being no breakage of the lead wires or peeling of their insulation  
     [0106] The vibrating actuator device involved in claim 11 of this invention has two suspensions with different vibration characteristics, so that it is possible to assemble it without the energy from vibration of the electromagnetic circuit being lost between the arms that cross each other.  
     [0107] The vibrating actuator device involved in claim 12 of this invention has two suspensions with a spacer ring between them pressed between the outer flange of the yoke and a stop ring and fixed as a unit to provide an electromagnetic circuit with good structural strength. By this means it can be assembled so as to display excellent vibration characteristics.  
     [0108] The vibrating actuator device involved in claim 13 of this invention has a spacer ring with stoppers to control lateral vibration that project outward from corresponding positions of the periphery, assembled with a yoke, suspensions and a stop ring with linear cuts on the outer edges corresponding to the projecting pieces of the stoppers. The stoppers are accommodated in concavities in the inner wall on the long sides of the housing, allowing assembly of the electromagnetic circuit within the housing. By this means it can be assembled to provide good shock resistance without increasing the width of the housing.  
     [0109] Further, the vibrating actuator device involved in claim 14 of this invention has a yoke, suspensions and a spacer ring with matching semi-circular cutouts in their outer edges, and the yoke, the suspensions and the spacer ring are assembled as the electromagnetic circuit by aligning the cutouts with the support pins of an assembly jig. By this means it is possible to assemble the structural parts while maintaining an even weight balance overall, and to display excellent vibration characteristics.