Patent Publication Number: US-7912242-B2

Title: Speaker apparatus and terminal member

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to a speaker apparatus and a terminal member. 
     The present application claims priority from Japanese Application No. 2005-327178, the disclosure of which is incorporated herein by reference. 
     2. Description of the Related Art 
       FIG. 1  illustrates a conventional speaker apparatus  1   j  as disclosed in JP Patent H6-14383A. The speaker apparatus  1   j  is provided at its center with a center pole  2   j  made of a magnetic material. A yoke  3   j  including the center pole  2   j  is formed in an inverted T shape with a difference in level in cross section. A ring-shaped magnet  4   j , which has a constant thickness, is provided on the circular side face of the yoke  3   j  at a fixed distance from the center pole  2   j  . A ring-shaped plate  5   j  is placed on the top face (in  FIG. 1 ) of the magnet  4   j . The yoke  3   j , the magnet  4   j  and the plate  5   j  constitute a magnet circuit. A metal-made speaker frame  6   j , which is provided on the plate  5   j , is formed in a funnel shape having a flat portion  6 A formed in part of it. A damper  7   j  is bonded to the flat portion  6 A with an adhesive. An air space  8   j  is created between the center pole  2   j  and the inner peripheral face of the plate  5   j . In the air space  8   j , a cylindrical voice coil bobbin  9   j  is provided in the vicinity of the outer periphery of the center pole  2   j , and a voice coil  10   j  is wound on the voice coil bobbin  9   j . One end of the damper  7   j  is fixed to a portion of the side face of the voice coil bobbin  9   j  above the voice coil  10   j , and also a diaphragm  11   j  is fixed at its one end to a higher portion of the voice coil bobbin  9   j  in  FIG. 1 . The other end of the diaphragm  11   j  is attached to the edge of the frame  6 . 
     A terminal T as an external input terminal is placed on an extending portion  6 B which extends continuously from the flat portion  6 A toward the outside of the frame  6   j . The terminal T is connected to one end of a lead wire K which is connected at the other end to the voice coil  10   j  through the diaphragm  11   j , so that an audio signal received by the terminal T is sent through the lead wire K to the voice coil  10   j  . A dust-proof cap  13   j  is provided on the top face (in  FIG. 1 ) of the voice coil bobbin  9   j.    
       FIG. 2A  is a perspective view of the conventional speaker apparatus  1   j  shown in  FIG. 1 .  FIG. 2B  is an enlarged view of the terminal T in  FIG. 2A . In a typical speaker apparatus  1   j , as illustrated in  FIGS. 2A and 2B , the lead wire K and the extending portion  6 B of the frame  6   j  are joined together through an eyelet  14   j , provided on the extending portion  6 B, by solder hd to form a terminal T. One end of the lead wire K is connected through the diaphragm  11   j  to the voice coil  19   j  and the other end thereof extends through the extending portion  6 B. 
     JP Utility Model S64-5436B discloses an apparatus for fixedly attaching a speaker terminal plate to a frame. The apparatus has a frame including a raised member with a receiving hole and a guide groove, and also has a terminal plate having an engaging hook formed at its end. The terminal plate is fitted into the guide groove and the engaging hook is engaged with the receiving hole, in order to fix the terminal plate to the frame. 
     However, the manufacture of the speaker described in JP Patent H6-14383A needs complicated steps in which the extending portion  6 B is formed on the flat portion  6 A of the frame and then the terminal T is formed on the extending portion  6 B. The manufacture of the apparatus described in JP Utility Model S64-5436B needs steps of forming the raised member having the engaging hole and further the guide groove in the speaker frame, and additionally complicated attaching steps in which the terminal plate is inserted into the guide groove and the engaging hook is engaged with the receiving hole. For these reasons, it is desired that a speaker apparatus should have a more simple structure and offer improved workability in the mounting process. 
     SUMMARY OF THE INVENTION 
     It is an object of the present invention to address these problems. In particular, it is an object of the present invention to provide a speaker apparatus equipped with a terminal member having a simple structure and improved in workability of a mounting process thereof. 
     For this object, the present invention provides at least the following structure. 
     An aspect of the present invention provides a speaker apparatus comprising a speaker frame and a terminal member mounted on the speaker frame. The speaker frame has a slide hole and a receiving hole bored close to an end of the slide hole. The terminal member has a protrusion protruding from a contact face making contact with the speaker frame, and a claw protruding in a direction approximately at a right angle to a protruding direction of the protrusion. The claw has an engaging portion formed in an approximate projection shape to engage with the receiving hole formed close to the end of the slide hole. 
     Another aspect of the present invention provides a terminal member mounted on a receiving member by use of a slide hole bored in the receiving member. The terminal member comprises a protrusion protruding from a contact face making contact with the receiving member, and a claw formed in a direction approximately at a right angle to a protruding direction of the protrusion. The claw comprises an engaging portion that is formed in an approximate projection shape to engage with a receiving hole formed close to an end of the slide hole. 
     In an exemplary embodiment of such a speaker apparatus according to the present invention, a speaker apparatus comprises a speaker frame and a terminal member mounted on the speaker frame. The speaker frame has a slide hole and a receiving hole bored close to an end of the slide hole. The terminal member has a protrusion protruding from a contact face making contact with the speaker frame, and a claw protruding in a direction approximately at a right angle to a protruding direction of the protrusion. The claw has an engaging portion formed in an approximate projection shape and engaging with the receiving hole made close to the end of the slide hole. 
     In the speaker apparatus according to the present invention, the protrusion of the terminal member is inserted into the slide hole, and then the terminal member is slid along the slide hole. Then, the approximate-projection-shaped engaging portion formed on the claw engages with the receiving hole made close to the end of the slide hole, thus fixedly attaching the terminal member to the speaker frame. In consequence, it is possible to provide a speaker apparatus equipped with a terminal member having a simple structure and improved in workability of a mounting process thereof. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       These and other objects and advantages of the present invention will become clear from the following description with reference to the accompanying drawings, wherein: 
         FIG. 1  is a sectional view illustrating a conventional speaker apparatus; 
         FIG. 2A  is a perspective view of the conventional speaker apparatus shown in  FIG. 1 ; 
         FIG. 2B  is an enlarged-sectional view of a terminal member T shown in  FIG. 2A ; 
         FIG. 3  is a sectional view illustrating a speaker apparatus according to an embodiment of the present invention; 
         FIG. 4  is a perspective view illustrating a neighborhood of the terminal member of the speaker apparatus shown in FIG.  3 ; 
         FIG. 5  is a bottom plan view illustrating a speaker frame of the speaker apparatus shown in  FIG. 3 ; 
         FIG. 6  is a partially sectional view of the speaker frame shown in  FIG. 5 ; 
         FIG. 7A  is a top plan view illustrating the terminal member of the speaker apparatus shown in  FIG. 3 ; 
         FIG. 7B  is a front view of the terminal member in  FIG. 7A ; 
         FIG. 7C  is a rear view of the terminal member in  FIG. 7A ; 
         FIG. 8  is a side view of the terminal member in  FIG. 7A ; 
         FIG. 9  is a perspective view of the terminal member in  FIG. 7A ; 
         FIG. 10  is an explanation view illustrating a mounting operation of the terminal member in the speaker apparatus shown in  FIG. 4 ; and 
         FIG. 11  is the further explanation view illustrating the mounting operation of the terminal member shown in  FIG. 4 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     A speaker apparatus according to an embodiment of the present invention will be described below with reference to the accompanying drawings. 
       FIG. 3  is a sectional view illustrating the speaker apparatus according to an embodiment of the present invention, and  FIG. 4  is a perspective view illustrating a terminal member and the area around it to provide an explanation of the speaker apparatus in  FIG. 3 . A speaker apparatus  100  according to the present embodiment has a center pole  2 , a yoke  3 , a magnet  4 , a plate  5 , a speaker frame  6 , a damper  7 , a voice coil bobbin  9 , a voice coil  10 , a diaphragm  11 , an edge  12 , a cap  13 , a outer frame (speaker grille)  14 , a terminal member  200  and a lead wire  300 . The speaker frame  6  includes a receiving member of the terminal member  200  according to the present invention. 
     The speaker apparatus  100  of the present embodiment is provided with the magnetic-material-made center pole  2  at its center. The yoke  3  including the center pole  2  has an inverted T shape with a difference in level in cross section. The ring-shaped magnet  4 , which has a constant thickness, is provided on the circular side face of the yoke  3  at a fixed distance from the center pole  2 . The ring-shaped plate  5  is placed on the top face of the magnet  4  as shown in  FIG. 3 . The yoke  3 , the magnet  4  and the plate  5  constitute a magnetic circuit. 
     The frame  6  provided on the plate  5  is formed in a funnel shape with a flat portion  6 A formed in part of it. The damper  7  is bonded to the flat portion  6 A with an adhesive, for example. An air space  8  is created between the center pole  2  and the inner peripheral face of the plate  5 . In the air space  8 , the cylindrical voice coil bobbin  9  is provided in the vicinity of the outer periphery of the center pole  2 , and the voice coil  10  is wound on the voice coil bobbin  9 . The damper  7  is fixedly attached at its one end to a portion of the side face of the voice coil bobbin  9  above the voice coil  10 , and also the diaphragm  11  is fixedly attached to a higher portion of the voice coil bobbin  9  as shown in  FIG. 3 . The outer peripheral end of the diaphragm  11  is attached via the edge  12  to the frame  6 , with allowance for vibration. The dust-proof cap  13  is provided on the top face of the voice coil bobbin  9 . The outer frame (speaker grille)  14  is provided on the front and outer end of the frame  6 . A protective member  15  is provided on the rear (back face) of the speaker apparatus  100  so as to cover the magnetic circuit. 
     The terminal member  200  is mounted on the flat portion  6 A of the frame  6 . The lead wire  300  is electrically connected at one end to the terminal member  200 , and at the other end to the voice coil  10  placed inside the frame  6  through the diaphragm  11 . 
     The terminal member  200  according to the present embodiment is fabricated independently of the frame  6 , and is then attached to the frame  6 . The frame  6  and the terminal member  200  have a fixing structure with each other, respectively, as described later. In the mounting process, the terminal member  200  and the frame  6  are fixedly joined together by the fixing structure. The provision of the fixing structure according to the present invention prevents the terminal member  200  from being removed from the frame  6  by an external force or the like. The frame  6  and the terminal member  200  will be described in detail later. 
     [Speaker Frame  6 ] 
       FIG. 5  is a back view for illustrating the speaker frame of the speaker apparatus shown in  FIG. 3 .  FIG. 6  is a partially sectional view of the speaker frame shown in  FIG. 5 . 
     As illustrated in  FIG. 3  to  FIG. 6 , the frame  6   h  as a plurality of frame arms  6   a  supporting the diaphragm  11  and the like, and a plurality of open-type frame-openings  6   b . The frame  6  in the present embodiment has four frame arms  6   a  and four frame-openings  6   b  as shown in  FIG. 5 . The terminal member  200  is mounted on at least one of the frame arms  6   a . Specifically, the frame  6  has the flat portion  6 A formed in the vicinity of the central portion of the frame arm  6   a , and the terminal member  200  is mounted on the flat portion  6 A. 
     A receiving hole portion  60  in which the terminal member  200  is mounted is formed in the flat portion  6 A of the frame  6 . More specifically, the receiving hole portion  60  is formed in a position corresponding to the protruding portion of the terminal member  200 . 
     The receiving hole portion  60  is constituted of a plurality of holes, for example, slide holes  61 , receiving holes  62  formed close to the ends of the respective slide holes  61 , and a third slide hole  63 . 
     For example, as illustrated in  FIGS. 4 and 5 , the receiving hole portion  60  has a first slide hole  61 A, a second slide hole  61 B, a first receiving hole  62 A, a second receiving hole  62 B, and a third slide hole  63 . The slide holes  61  ( 61 A,  16 B) represent an embodiment of the slide hole according to the present invention. The receiving holes  62  ( 62 A,  62 B) represent an embodiment of the receiving hole according to the present invention. 
     Each of the slide holes  61  receives a protrusion of the terminal member  200 . The slide hole  61  has a first hole  611  and a second hole  612 , which are connected to each other, as shown in  FIG. 5 . Specifically, the first hole  611  is formed in a shape into which the protrusion  213  and a claw  215  of the terminal member  200  are inserted as described later. The second hole  612 , which extends continuously from the first hole  611 , has the long axis direction restricted in the sliding direction of the terminal member  200  with the insertion of the protrusion  213 , and has approximately the same width as that of the protrusion  213 . 
     Each of the receiving holes  62  is formed in the vicinity of the end of the slide hole  61 , which specifically is formed close to the end of the second hole  612 . As described later, the receiving hole  62  engages with an engaging portion  216  formed on the claw of the protrusion of the terminal member  200 . 
     The third slide hole  63  engages with a protrusion (third claw)  211 A formed on the terminal member  200  when the terminal member  200  is slid and fastened as described later. Each of the structural components will be described in detail later. 
     [Terminal Member  200 ] 
       FIGS. 7A to 7C  illustrate the terminal member of the speaker apparatus shown in  FIG. 3 .  FIG. 7A  is a top plan view of the terminal member,  FIG. 7B  is a front view thereof, and  FIG. 7C  is its rear view.  FIG. 8  is a side view of the terminal member shown in  FIGS. 7A to 7C . Further,  FIG. 9  is a perspective view of the terminal member shown in  FIGS. 7A to 7C . The terminal member will be described below with reference to  FIGS. 7A to 9 . 
     The terminal member  200  is attached to the frame  6  as described above. The terminal member  200  has a base member (substrate)  210 , terminal plates  220  and connectors  230 . 
     The base member  210  is formed in an approximate flat-plate shape, for example. Specifically, the base member  210  has a central base  211 , and arms  212  ( 212 A,  212 B) respectively extending outward from the central base  211  in opposite longitudinal directions. More specifically, the central base  211  is formed in an approximate trapezoid shape, and the connectors  230  are provided on the central base  211 . The central base  211  has a claw  211 A extending outward from the face  210   a  making contact with the speaker frame. The claw  211 A is formed in an approximate L shape curving in the slide direction sd 1 . A tapered face  211 B is formed on the upper face of the end of the claw  211 A as shown in  FIG. 9 . 
     Each of the arms  212  ( 212 A,  212 B), which respectively extends outward from the central base  211  in the opposite longitudinal directions, has a protrusion  213  protruding in the vicinity of the end thereof from the face  210   a  making contact with the speaker frame. Specifically, the first protrusion  213 A is formed on the first arm  212 A and the second protrusion  213 B is formed on the second arm  212 B. 
     The protrusions  213  ( 213 A,  213 B) are formed in an approximately tubular shape and through holes  214  ( 214 A,  214 B) are respectively formed in the vicinity of central portions of the tubular shapes. As described later, the lead wire  300 , which is connected at one end to the voice coil  10  placed inside the frame  6  and at the other end to the terminal member  200  mounted on the outside of the frame  6 , is led out through the through hole  214  and then connected to the terminal member  200 . 
     The claw  215  is formed on each of the arms  212  ( 212 A,  212 B) and extends out in a direction approximately perpendicular to the protruding direction of the protrusion  213 . Specifically, as illustrated in  FIG. 7A  to  FIG. 9 , the first protrusion  212 A includes the first claw  215 A of the shape protruding in a direction approximately perpendicular to the slide direction, and the second protrusion  212 B includes the second claw  215 B of the shape protruding in the direction approximately opposite to the extension of the first claw  215 A. The first claw  215 A and the second claw  215 B respectively extend from the side faces of the protrusions  213  in opposite directions (toward the outside of the terminal member  200 ). 
     Each of the claws  215  is provided with an engaging portion  216  engaging with the receiving hole  62  of the frame  6 . The engaging portion  216  in the present embodiment is formed in an approximate upwardly-directed projection shape (in  FIG. 7A ) and approximately close to the end of the claw  215 , for example. 
     For the base member  210 , the structural components (e.g., the central base  211 , the arms  212 , the protrusions  213 , the through holes  214 , the claws  215  and the engaging portions  216 ) are integrally formed with the same materials. Various flexible materials such as elastomer, rubber or a resin material can be desirably used to form the base member  210 . 
     Each of the terminal plates  220  is formed, for example, of a metal material, and provides electrical connection between the lead wire  300  led out to the rear face and the connector  230 . The terminal plate  220  has an anchor  221  allowing for the fixed attachment of the lead wire  300 . What is required is for the anchor  221  to reliably hold the lead wire  300 , and therefore the shape and the like of the anchor  221  are not limited specially. The anchor  221  in the present embodiment is formed close to the end of the terminal plate  220  as an approximate U-shaped raised portion as shown in  FIG. 7B , for example. The lead wire  300  is fitted into the U-shaped recess and then soldered thereto so as to be joined to the anchor  221 . The terminal plate  220  has a through hole  222  bored in axis alignment with the through hole  214  of the base member  210 . The lead wire  300  is inserted through the through holes  222  and  214 . 
     When the two connectors  230  ( 230 A,  230 B) are provided, the terminal plate  220  is divided into two terminal plates  220 A and  220 B respectively connected to the connectors  230 A and  230 B. The terminal plate  220 A has the anchor  221 A formed thereon and the through hole  222 A formed therein, and the terminal plate  220 B has the anchor  221 B formed thereon and the through hole  222 B formed therein. 
     The connector  230  has one end connectable to a speaker cable or the like which is connected to external equipment, such as an amplifier, for sending an audio signal to the speaker apparatus, for example. The connector  230  is placed on the outside of the frame  6 . The connector  230  is constituted of a push terminal or a screw terminal, for example. The connector  230  in the present embodiment is constituted of a push terminal. The type of the connector  230  is not limited to the above types. For example, the connector  230  may be constituted of any of a spade terminal, a fast-on terminal and a bullet terminal. Alternatively, the connector  230  may have the socket plug-in structure. 
     [Operations for Mounting the Terminal Member  200 ] 
       FIG. 10  and  FIG. 11  illustrate the operations of fabricating the speaker apparatus  100  shown in  FIG. 4 . A description will be given of the operations of fabricating the speaker apparatus of the above-described structure, in particular, the operations of mounting the terminal member  200  on the speaker frame  6 , with reference to  FIG. 4  to  FIG. 11 . 
     First, the positional relationship between the frame  6  and the terminal member  200  is determined such that the mounted hole portion  60  formed in the flat portion  6 A on the rear face of the frame  6  is aligned with the protruding portion of the terminal member  200 , as shown in  FIG. 4 . Specifically, the position relationship of the terminal member  200  is determined such that the first protrusion  213 A, the second protrusion  213 B and the third claw  211 A are respectively aligned with the first slide hole  61 A, the second slide hole  61 B and the third slide hole  63 . 
     Then, as shown in  FIG. 10 , the protrusions  213 A,  213 B and the third claw  211 A are respectively fitted into the first slide hole  61 A, the second slide hole  61 B and the third slide hole  63 . Then, as shown in  FIG. 11 , the terminal member  200  is slid along the slide hole (outward in the radial direction of the frame  6 ) while the protrusions  213 A,  213 B and the third claw  211 A are inserted into the slide holes  61 A,  61 B and the third slide hole  63 . 
     After the terminal member  200  has been slid, the approximate-projection-shaped engaging portions  216 A,  216 B formed on the claws  215 A,  215 B and the receiving holes  62 A,  62 B formed close to the termination ends of the slide holes  61 A,  61 B engage with each other and are joined together, whereby the terminal member  200  is secured to the speaker frame  6 . That is, the arms  212 A,  212 B of the terminal member  200  are fastened to the frame  6 . At this point, the third claw  211 A of the terminal member  200  engage with the third slide hole  63 . That is, the central base  211  of the terminal member  200  is fastened to the frame  6 . 
     After the terminal member  200  has been attached to the frame  6  as shown in  FIG. 11 , the projections  213  of the terminal member  200  project into the inside of the frame  6  and the terminal plates  220  and the connectors  230  are located outside the frame  6 . 
     [Operations for Mounting the Lead Wire  300 ] 
     Next, a description will be given of the operations of fabricating the speaker apparatus  100 , in particular the operations of connecting the lead wire  300  to the terminal member  200  and the voice coil bobbin  9 , with reference to the accompanying drawings. For example, as shown in  FIG. 3 , when the lead wire  300  is mounted on the terminal member  200  which has been attached to the frame  6 , the operator first inserts his hand into the frame  6  from the frame-opening  6   b  as shown in  FIGS. 4 and 5 , then simply inserts the end of the lead wire  300  into the through hole  214  from the direction of the insertion end on the protrusion  213 , then draws the lead wire  300  through the through hole  214 , and then fixedly joins it to the anchor  221  by solder or the like. That is, the necessity for performing a soldering operation inside the frame  6  is eliminated, resulting in an effective connection operation for the lead wire  300 . 
     The present invention is not limited to the foregoing embodiment. For example, the terminal member  200  is attached to the flat portion  6 A of the frame  6  in the present embodiment, but the point of attachment is not so limited. For reasons of design or the like, a slide hole may be formed in a desired position on the frame  6  for attachment. 
     The claw  215  is placed in a direction at an approximately right angle to the slide direction, but the direction is not so limited. For example, the claw  215  may be of a shape protruding in the slide direction. 
     The foregoing embodiment has described a speaker apparatus having a cone-shaped diaphragm, but is not so limited. The speaker apparatus may have a diaphragm of various shapes such as a cone shape, a dome shape, a circular shape, an elliptical shape, for example. The foregoing embodiment has described a speaker with a drive system which is driven by application of electric current, but the drive system is not so limited. For example, various drive systems such as an electromagnetic drive system, an electrostatic drive system or a piezoelectric drive system may be adopted. Regarding the type of the magnetic circuit, a magnetic circuit with a magnet placed on either the inner or outer side may be used. 
     As described above, the frame  6  has the slide holes  61 , and the receiving holes  62  respectively bored close to the ends of the slide holes  61 . The terminal member  200  has the protrusions  213  protruding from the face thereof making contact with the speaker frame  6 , and the claws  215  protruding in a direction approximately at a right angle to the protruding direction of the protrusion  213 . On each of the claws  215 , the approximate-projection-shaped engaging portion  216  is formed for engaging with the receiving hole  62  formed close to the end of the slide hole  61 . As a result, when, for example, the terminal member  200  is mounted on the frame  5 , the protrusion  213  is slid along the slide hole  61  while being inserted into the slide hole  61 , and then the receiving hole  62  bored close to the end of the slide hole  61  is fixedly engaged with the approximate-projection-shaped engaging portion  216  formed on the claw  215 , thereby fastening the terminal member  200  to the speaker frame  6 . In short, it is possible to provide a speaker apparatus equipped with a terminal member having a simple structure and improved in workability in the mounting process, and provide the terminal member. 
     Further, the terminal member  200  has the protrusions  213 A,  213 B respectively provided close to the both ends of the terminal member  200 . The protrusion  213 A includes the claw  215 A protruding in a direction approximately perpendicular to the sliding direction of the terminal member  200 , while the protrusion  213 B includes the claw  215 B protruding in the direction approximately opposite to the claw  215 A. In consequence, the more reliable fastening of the terminal member  200  to the frame  6  is achieved. 
     On the other hand, the frame  6  has the slide holes  61 A,  61 B respectively bored in correspondence with the protrusions  213 A,  213 B. Then, the receiving holes  62 A,  62 B engaging with the claws  215 A,  215 B are respectively bored close to the ends of the slide holes  61 A,  61 B. In consequence, the more reliable fastening of the terminal member  200  to the frame  6  is achieved. 
     The terminal member  200  includes the third claw  211 A protruding in an approximately middle position between the protrusions  213 A,  213 B from the face making contact with the speaker frame  6 . The speaker frame  6  includes the third slide hole  63  engaging with the third claw  211 A of the terminal member  200 . The third claw  211 A is engaged with the third slide hole  63 , whereby the more reliable fastening of the terminal member  200  to the frame  6  is achieved The slide hole  61  of the frame  6  includes the first hole  611  shaped to engage with the protrusion  213  and the claw  215  of the terminal member  200 , and the second hole  612  which connects with the first hole  611 , has the long axis direction limited in the sliding direction of the terminal member  200  with the insertion of the protrusions  213 , and has approximately the same width as that of the protrusion  213 . The receiving hole  62  engaging with the claw  215  of the terminal member  200  is formed close to the end of the second hole  612 . As a result, the terminal member  200  according to the present invention is capable of being inserted into the slide holes  61  and receiving holes  62  which are a simple structure provided on the frame  6 , and being reliably fixed to the frame  6 . 
     The terminal member  200  includes the approximately-tubular-shaped protrusions  213  having the through holes  214 . The lead wire  300  connected at one end to the voice coil  10  inside the frame  6  and at the other end to the terminal member  200  placed outside the frame  6  is inserted through the through hole  214  and then is connected to the terminal member  200 . As a result, the lead wire  300  can be simply mounted. Further, the lead wire  300  after having inserted through the tubular shaped protrusion  213  is fixed to the anchor  221 . This design makes itpossibletopreventtheleadwire 300  from falling. In addition, in the case of using the protrusion  213  formed of a flexible material, even if the lead wire  300  is subjected to stress or strong vibrations, the lead wire  300  can be prevented from being broken, thus maintaining the stable conductive state of the lead wire  300 . 
     Further, the terminal member  200  in the present embodiment is constituted of the structural components molded integrally with each other by molding techniques such as injection molding, thus easily providing a terminal member  200  having protrusions  213 , through holes  214 , claws  215 , engaging portions  216  and the like according to the present invention. 
     While there has been described what are at present considered to be preferred embodiments of the present invention, it will be understood that various modifications may be made thereto, and it is intended that the appended claims cover all such modifications as fall within the true spirit and scope of the invention.