Abstract:
A wire harness includes an insulating member that contains a conductor therein, the conductor extending along one direction, and the insulating member having a front face and a back face that is opposed to the front face and a plurality of hook-shaped members and a plurality of loop-shaped members that are provided on at least one of the first face and the back face of the insulating member. The hook-shaped members are engageable to loop shaped members of a mating wire harness to be laminated to the wire harness. The loop-shaped members are engageable to hook shaped members of the mating wire harness.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     The present invention relates to a wire harness fitted to a car, or the like and a wire harness laminating method and, more particularly, a wire harness that can be installed even when front and back faces of the wire harness are reversed and can reduce a cord providing space and a wire harness laminating method.  
         [0002]     The progress in a car, a copying machine, a ticket machine, etc. equipped with electronic equipments has been notable in recent years. The wire harness is employed as the wiring system to transfer information and energy that are indispensable for these equipments.  
         [0003]     For example, several hundreds of high-performance electric wires are needed to operate precisely an engine, meters, lights, etc. of the car. The wire harness is employed to tie up such electric wires and information circuits compactly in a bundle.  
         [0004]     As the wire harness, normally there are the flat type in which core electric wires as conductors are aligned like a flat surface and the bundle type constituting a group of electric wires.  
         [0005]     Since the flat-type wire harness has a small thickness, such wire harness has advantages that it does not occupy much space, it makes the cord provision simple, and the like. Also, since the specification of the core electric wires is different according to the applied portion, the wire harnesses that fit in with the applied portions are often employed in a laminated fashion (see JP-UM-A-6-64324, for example).  
         [0006]     In JP-UM-A-6-64324, the flat harness and the flat harness fixing structure have a structure shown in  FIG. 11  and  FIG. 12  respectively.  
         [0007]     More particularly, as shown in  FIG. 11 , a flat harness  50  is formed by putting opposing surfaces of a conductive material  51 , which continues in one direction, between insulating films  52 . A laminated fabric  54  is adhered onto outer surfaces of the insulating films  52  via an adhesive agent  53  respectively. Also, female engagement portions  55  are implanted on the laminated fabric  54  on one side, and male engagement portions  56  are implanted on the laminated fabric  54  on the other side.  
         [0008]     In laminating the flat harnesses  50  having the above structure, as shown in  FIG. 12 , two sheets of flat harnesses  50 A,  50 B are laminated in such a way that the male engagement portions  56  on the second flat harness  50 B are engaged with the female engagement portions  55  on the first flat harness  50 A respectively. Then, three sheets of flat harnesses  50 A,  50 B,  50 C are laminated such that the male engagement portions  56  on the third flat harness  50 C are engaged with the female engagement portions  55  on the second flat harness  50 B respectively.  
         [0009]     However, in the flat harness laminated structure in JP-UM-A-6-64324, the problems described in the following exist. First, in this flat harness laminated structure in JP-UM-A-6-64324, the female engagement portions  55  and the male engagement portions  56  are provided to the surface of the flat harness  50  on one side and the surface on the other side respectively. Therefore, the female engagement portions  55  and the male engagement portions  56  on the flat harnesses  50 A,  50 B must be engaged to oppose mutually in laminating the flat harnesses  50 A,  50 B, etc. Accordingly, there is the problem that respective directions of the flat harnesses  50 A,  50 B are determined and thus the flat harnesses  50 A,  50 B cannot be used in a reversed mode of their front and back surfaces.  
         [0010]     Consequently, for example, when the worker holds the flat harness  50  to be laminated in his or her hand and then engages it with the first flat harness  50 A, first such worker must check which one of the female engagement portions  55  and the male engagement portions  56  appears on the surface of the first flat harness  50 A, and then the worker must check the type of fibres on the flat harness  50  in his or her hand to correspond to the appeared female engagement portions  55  or male engagement portions  56 .  
         [0011]     Normally the flat harnesses to be laminated are orderly managed such that the worker can conduct effectively the laminating operation as it is when he or she holds the flat harness in his or her hand, nevertheless for some reason the flat harness is placed in its reversed state. The worker assumes that the flat harness can be laminated immediately and pushes the flat harness in his or her hand against the opposing flat harness, but the female engagement portions  55  and the male engagement portions  56  do not meet face to face. Therefore, the worker must turn the flat harness in his or her hand upside down and then push it once again, so that such laminating operation takes a lot of time and effort.  
         [0012]     Also, the flat wire harness is constructed by laminating sequentially the insulating film  52 , the adhesive agent  53 , the laminated fabric  54 , and the female engagement portions  55  or the male engagement portions  56  on the front and back surfaces of the conductive material  51  respectively, and the overall structure is constructed like a flat plate. Therefore, in case such laminated flat harnesses  50  are fitted the body of the car, or the like, a cord providing space having a thickness equivalent to the number of laminated sheets is needed. Supposing that a number of flat harnesses are laminated by using the laminated structure in JP-UM-A-6-64324, such thickness occupies a space on the interior side correspondingly to narrower an interior space.  
       SUMMARY OF THE INVENTION  
       [0013]     It is an object of the present invention to provide a wire harness that can be used even when front and back surfaces of the wire harness are reversed and a wire harness laminating method.  
         [0014]     Also, it is another object of the present invention to provide a wire harness and a wire harness laminating method capable of reducing a cord providing space.  
         [0015]     (1) A flat type of a wire harness of the present invention plural sheets of which can be laminated, wherein the wire harness is constructed to contain an insulator portion to an inside of which a conductor continuing in one direction is provided, a number of hook-shaped members and a number of loop-shaped members are provided on either of front and back surfaces of the insulator portion, and the hook-shaped member and the loop-shaped members are engaged with the loop-shaped members and the hook-shaped members of an opposing wire harness to be laminated respectively.  
         [0016]     According to the wire harness having the above configuration, a number of hook-shaped members and a number of loop-shaped members are provided on either of the front and back surfaces of the insulator portion of the wire harness. Therefore, the same wire harness is reversed and then the hook-shaped members and the loop-shaped members of two sheets of wire harnesses can be engaged mutually. As a result, the wire harness can be used even when such wire harness is reversed.  
         [0017]     (2) In the present invention, in the wire harness according to (1), the insulator portion is formed to contain a plurality of conducting portions which are arranged at a predetermined interval and into insides of which the conductor is inserted respectively, and bridge portions which couple the conducting portions mutually and a thickness of which is smaller than the conducting portions, the hook-shaped members are implanted on either of front and back surfaces of the conducting portions, and the loop-shaped members are implanted on either of front and back surfaces of the bridge portions.  
         [0018]     According to the wire harness having the above configuration, a thickness of the bridge portions is smaller than that of the conducting portions, and two sheets of wire harnesses are laminated by engaging a number of hook-shaped members implanted on the conducting portions with the loop-shaped members implanted on the bridge portions. As a result, a total thickness can be reduced by a half of a thickness difference between the conducting portion and the bridge portion rather than the case where the conducting portions are brought into contact with each other, and thus a cord providing space can be reduced.  
         [0019]     (3) In the present invention, in the wire harness according to (1), the insulator portion is formed to contain a plurality of conducting portions which are arranged at a predetermined interval and into insides of which the conductor is inserted respectively, and bridge portions which couple the conducting portions mutually and a thickness of which is smaller than the conducting portions, the hook-shaped members are implanted on both front and back surfaces of the conducting portions, and the loop-shaped members are implanted on both front and back surfaces of the bridge portions.  
         [0020]     According to the wire harness having the above configuration, the hook-shaped members and the loop-shaped members are implanted on both the front surface and the back surface of the conducting portions and the bridge portions of the wire harnesses respectively. Therefore, plural sheets of wire harnesses can be laminated only by pushing them after the wire harnesses are arranged to overlap the conducting portions and the bridge portions respectively. As a result, since there is no need to check which one of the front surface and the back surface of the wire harnesses in his or her hand is prepared to laminate, such an advantage can be achieved that the fitting operation can be applied in a situation that the wire harness is reversed and also such fitting operation can be facilitated.  
         [0021]     (4) A wire harness laminating method of the present invention of laminating the wire harness set forth (2) or (3), wherein plural sheets of wire harnesses are laminated by opposing the conducting portions and the bridge portions of respective wire harnesses to each other to shift the laminated wire harnesses mutually in mutual width directions, then overlapping both wire harnesses with each other, and then engaging the hook-shaped members on the conducting portions with the loop-shaped members on the bridge portions.  
         [0022]     According to the wire harness laminating method having the above configuration, plural sheets of wire harnesses are laminated by engaging a number of hook-shaped members implanted on the conducting portions, a thickness of each of which is smaller than the conducting portion of the wire harness, with the loop-shaped members implanted on the bridge portions. As a result, a total thickness can be reduced by a half of a thickness difference between the conducting portion and the bridge portion rather than the case where the conducting portions are brought into contact with each other, and thus a cord providing space can be reduced.  
         [0023]     According to the present invention, there is also provided a wire harness, comprising:  
         [0024]     an insulating member that contains a conductor therein, the conductor extending along one direction, and the insulating member having a front face and a back face that is opposed to the front face; and  
         [0025]     a plurality of hook-shaped members and a plurality of loop-shaped members that are provided on at least one of the first face and the back face of the insulating member,  
         [0026]     wherein the hook-shaped members are engageable to loop shaped members of a mating wire harness to be laminated to the wire harness; and  
         [0027]     wherein the loop-shaped members are engageable to hook shaped members of the mating wire harness.  
         [0028]     Preferably, the insulating member includes a plurality of conducting portions and a plurality of bridge portions that couple the conducting portions. The conducting portions are arranged at a predetermined interval and have a plurality of the conductors respectively. The thickness of the bridge portions is smaller than that of the conducting portions. The hook-shaped members are provided on at least one of front faces and back faces of the conducting portions. The loop-shaped members are provided on at least one of front face and back face of the bridge portions.  
         [0029]     Preferably, The hook-shaped members are provided on both the front faces and the back faces of the conducting portions. The loop-shaped members are provided on both the front faces and the back faces of the bridge portions.  
         [0030]     Preferably, the hook-shaped members are provided on either the front faces or the back faces of the conducting portions. The loop-shaped members are provided on either the front faces or the back faces of the bridge portions.  
         [0031]     According to the present invention, there is also provided a method of laminating at least two wire harnesses, comprising:  
         [0032]     arranging the at least two wire harnesses that are opposed to and shifted to each other so that the conducting portions of the respective wire harnesses are opposed to the bridge portions of the respective wire harnesses; and  
         [0033]     laminating the at least two wire harness to each other so that the hook-shaped members on the conducting portions are engaged with the loop-shaped members on the bridge portions.  
         [0034]     According to the wire harness laminated structure and the wire harness laminating method of the present invention, the wire harness laminated structure can be used even when front and back surfaces of the wire harness are reversed, and also the cord providing space can be reduced. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0035]     The above objects and advantages of the present invention will become more apparent by describing in detail preferred exemplary embodiments thereof with reference to the accompanying drawings, wherein:  
         [0036]      FIG. 1  is a perspective view showing a first embodiment of a wire harness according to the present invention;  
         [0037]      FIG. 2  is a front view showing the wire harness of the first embodiment;  
         [0038]      FIG. 3  is an exploded front view showing a wire harness laminating method of the first embodiment;  
         [0039]      FIG. 4  is a front view showing a wire harness laminated state of the first embodiment;  
         [0040]      FIG. 5  is a front view showing a second embodiment of a wire harness according to the present invention;  
         [0041]      FIG. 6  is an exploded front view showing a wire harness laminating method of the second embodiment;  
         [0042]      FIG. 7  is a front view showing a third embodiment of a wire harness according to the present invention;  
         [0043]      FIG. 8  is an exploded front view showing a wire harness laminating method of the third embodiment;  
         [0044]      FIG. 9  is an exploded front view showing a wire harness laminating method according to a variation of the present invention;  
         [0045]      FIG. 10  is an exploded front view showing a wire harness laminating method according to another variation of the present invention;  
         [0046]      FIG. 11  is a longitudinal sectional view showing a wire harness in the related art; and  
         [0047]      FIG. 12  is a longitudinal sectional view showing a wire harness laminated structure in the related art.  
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0048]     Preferred embodiments according to the present invention will be explained with reference to the drawings hereinafter.  
         [0049]     A flat type wire harness  10  according to a first embodiment is shown in  FIG. 1  and  FIG. 2  respectively, and a wire harness laminating method of laminating a plurality of the wire harnesses  10  is shown in  FIG. 3  and  FIG. 4  respectively.  
         [0050]     The wire harness  10  includes cylindrical conducting portions  11  arranged in three rows, for example, and serving as an insulator portion made of a synthetic resin, or the like, and bridge portions  12  for coupling these conducting portions  11 . The wire harness  10  is manufactured to have a predetermined length. Although not shown, a core electric wire as a predetermined conducting portion is contained in the inside of the conducting portion  11  to continue in one direction. The bridge portion  12  is formed like a thin plate whose thickness is smaller than a diameter of the conducting portion  11 . This bridge portion  12  is provided on a line that connects both centers of neighboring conducting portions  11 , and is provided to continue along the longitudinal direction of the conducting portion  11 . In this case, the conducting portions  11  arranged in two rows or less or four rows or more may be employed, and also a shape is not limited to the cylindrical shape. For example, a prism shape, or the like may be employed.  
         [0051]     In  FIG. 1  and  FIG. 2 , supposing that the upper side is the front face side and the lower side is the back face side, a number of hook-shaped members  13  and a number of loop-shaped members  14  are implanted on the back face of the wire harness  10 .  
         [0052]     More particularly, a number of hook-shaped members  13  are implanted on the conducting portion  11  as a constituent member of the wire harness  10  along the longitudinal direction of the conducting portion  11 . A number of loop-shaped members  14  are implanted on the bridge portion  12  along the longitudinal direction of the bridge portion  12 . As the hook-shaped members  13  and the loop-shaped members  14 , the so-called Magic Tape (registered trademark) is employed.  
         [0053]     In laminating two sheets of wire harness  10  constructed as above, as shown in  FIG. 3 , first the back face of the first wire harness  10 A and the front lo face of the second wire harness  10 B are arranged to oppose to each other. In other words, the first wire harness  10 A is arranged by reversing the above wire harness  10  to direct the hook-shaped members  13  and the loop-shaped members  14  of the first wire harness  10 A upward, while the second wire harness  10 B is arranged to direct the hook-shaped members  13  and the loop-shaped members  14  of the second wire harness  10 B downward.  
         [0054]     At this time, the wire harness  10 A and the wire harness  10 B are arranged to shift in their width direction such that the conducting portions  11  of the wire harness  10 A are overlapped with the bridge portions  12  of the wire harness  10 B respectively and also the bridge portions  12  of the wire harness  10 A are overlapped with the conducting portions  11  of the wire harness  10 B respectively. Then, when the wire harness  10 A and the wire harness  10 B are pushed in the directions indicated with arrows A, B mutually, the hook-shaped members  13  on the conducting portions  11  engage with the loop-shaped members  14  on the bridge portions  12  respectively. Thus, as shown in  FIG. 4 , both wire harnesses  10 A,  10 B are laminated. In this case, two sheets of laminated wire harnesses  10 A,  10 B are put into the interior finishing member, or the like and then fitted under the roof, or the like of the car.  
         [0055]     According to the first embodiment, following advantages can be achieved.  
         [0056]     In other words, two sheets of wire harnesses  10 A,  10 B have the conducting portions  11  and the bridge portions  12  a thickness of each of which is thinner than the conducting portion  11  respectively. Also, in laminating the wire harness  10 A and the wire harness  10 B, these wire harnesses are shifted mutually in their width direction to overlap the conducting portions  11  and the bridge portions  12  of the wire harness  10 B with the bridge portions  12  and the conducting portions  11  of the wire harness  10 A respectively. As a result, when the wire harnesses  10 A,  10 B are laminated, a total thickness can be reduced by a half of a thickness difference between the conducting portion  11  and the bridge portion  12  rather than the case where the conducting portions  11  are brought into contact with each other, and thus a cord providing space can be reduced.  
         [0057]     Also, because the hook-shaped members  13  and the loop- shaped members  14  are implanted on the conducting portions  11  and the bridge portions  12  on the back face of the wire harness  10  respectively, the loop-shaped members  14  may be implanted on the bridge portions  12  subsequently without a reversal of the wire harness  10  after the hook-shaped members  13  are implanted on the hook-shaped members  13 . As a result, a time and effect can be reduced, and the implantation of the hook- shaped members  13  and the loop-shaped members  14  can be facilitated.  
         [0058]     Next, a second embodiment of the present invention will be explained with reference to  FIG. 5  and  FIG. 6  hereunder.  
         [0059]     A wire harness  20  of the present embodiment is that the loop-shaped members  14  are implanted on the front face and also the hook-shaped members  13  are implanted on the back face.  
         [0060]     As shown in  FIG. 5 , the wire harness  20  is formed to have the conducting portions  11  and the bridge portions  12 . Also, the hook-shaped members  13  are implanted on the back face of the conducting portions  11 , and the loop-shaped members  14  are implanted on the front face of the bridge portions  12 .  
         [0061]     In laminating two sheets of wire harnesses  20  constructed as above, as shown in  FIG. 6 , first the front face of a first wire harnesses  20 A and the back face of a second wire harnesses  20 B are arranged to oppose to each other. That is, the first wire harnesses  20 A is arranged to direct the loop- shaped members  14  upward and the second wire harnesses  20 B is arranged to direct the hook-shaped members  13  downward.  
         [0062]     At this time, the wire harness  20 A and the wire harness  20 B are arranged to shift in their width direction such that the conducting portions  11  of the wire harness  20 A are overlapped with the bridge portions  12  of the wire harness  20 B respectively and also the bridge portions  12  of the wire harness  20 A are overlapped with the conducting portions  11  of the wire harness  20 B respectively. Then, when the wire harness  20 A and the wire harness  20 B are pushed mutually in the directions indicated with arrows A, B, the hook-shaped members  13  on the conducting portions  11  engage with the loop-shaped members  14  on the bridge portions  12  respectively. Thus, both wire harnesses  20 A,  20 B are laminated mutually.  
         [0063]     According to the second embodiment described above, the hook-shaped members  13  are implanted on the back faces of the conducting portions  11  of the first wire harness  20 A. Therefore, the laminated wire harnesses  20 A,  20 B can be fitted to the interior finishing member of the roof, or the like of the car merely by pushing the hook-shaped members  13  against the flocked portion, or the like of the car. As a result, in addition to the advantage of the first embodiment such that a cord providing space can be reduced, such an advantage can be achieved that the laminated wire harnesses can be fixed without use of a separate fixing member.  
         [0064]     Next, a third embodiment of the present invention will be explained with reference to  FIG. 7  and  FIG. 8  hereunder.  
         [0065]     A wire harness  30  of the present embodiment is that the hook-shaped members  13  and the loop-shaped members  14  are implanted on both front and back faces.  
         [0066]     As shown in  FIG. 7 , the wire harness  30  is formed to have the conducting portions  11  and the bridge portions  12 . Also, the hook-shaped members  13  are implanted on both front and back faces of the conducting portions  11 , and the loop-shaped members  14  are implanted on both front and back faces of the bridge portions  12 .  
         [0067]     In laminating three sheets of wire harnesses  30  constructed as above, as shown in  FIG. 8 , first a first wire harnesses  30 A and a second wire harnesses  30 B are arranged to oppose to each other.  
         [0068]     At this time, the wire harness  30 A and the wire harness  30 B are arranged to shift in their width direction such that the conducting portions  11  of the wire harness  30 A are overlapped with the bridge portions  12  of the wire harness  30 B respectively and also the bridge portions  12  of the wire harness  30 A are overlapped with the conducting portions  11  of the wire harness  30 B respectively. Then, when the wire harness  30 A and the wire harness  30 B are pushed mutually in the directions indicated with arrows A, B, the hook-shaped members  13  on the conducting portions  11  engage with the loop-shaped members  14  on the bridge portions  12  respectively. Thus, both wire harnesses  30 A,  30 B are laminated mutually.  
         [0069]     Then, a third wire harness  30 C is opposed to two sheets of laminated wire harnesses  30 A,  30 B to shift in its width direction such that the conducting portions  11  of the wire harness  30 B are overlapped with the bridge portions  12  of the wire harness  30 C respectively and also the bridge portions  12  of the wire harness  30 B are overlapped with the conducting portions  11  of the wire harness  30 C respectively. Then, as described above, when the wire harness  30 A, the wire harness  30 B, and the wire harness  30 C are pushed mutually in the directions indicated with arrows A, B, the hook-shaped members  13  on the conducting portions  11  engage with the loop-shaped members  14  on the bridge portions  12  respectively. Thus, the wire harness  30 C is stacked on two sheets of laminated wire harnesses  30 A,  30 B are laminated.  
         [0070]     According to the third embodiment described above, the hook-shaped members  13  and the loop-shaped members  14  are implanted on both front and back faces of the conducting portions  11  and the bridge portions  12  of the laminated wire harnesses  30 A,  30 B,  30 C respectively. Therefore, plural sheets of wire harnesses  30 A, and the like can be laminated only by pushing them after the wire harnesses are arranged to overlap the mutual conducting portions  11  and the mutual bridge portions  12  respectively, and thus it is not required of the worker to check which one of the front face and the back face of the wire harnesses  30 B, or the like in his or her hand is prepared to laminate. As a result, in addition to the advantage of the first embodiment such that a cord providing space can be reduced and the advantage of the second embodiment such that the fixing member can be omitted, such an advantage can be achieved that the fitting operation can be applied in a situation that the wire harness is reversed and also such fitting operation can be facilitated.  
         [0071]     In this case, the present invention is not limited to above embodiment, and variations and improvements can be applied appropriately. For example, in the above embodiments, the wire harnesses  10 ,  20 ,  30  having the same shape respectively are prepared and then laminated by arranging them such that the conducting portions  11  and the bridge portions  12  are overlapped with each other. But the present invention is not limited to the above. As shown in  FIG. 9  and  FIG. 10 , the wire harnesses in respective embodiments may be used appropriately in combination.  
         [0072]     In a wire harness laminating method shown in  FIG. 9 , the wire harness  10  of the first embodiment and the wire harness  20  of the second embodiment are combined mutually. That is, the wire harness  10  of the first embodiment and the wire harness  20  of the second embodiment are opposed to shift in the width direction and then arranged such that the conducting portions  11  and the bridge portions  12  of respective wire harnesses are overlapped with each other. Then, as described above, the wire harness  10  and the wire harness  20  are laminated by pushing them in the directions indicated with arrows A, B mutually.  
         [0073]     With this configuration, since the hook-shaped members  13  are implanted on the back faces of the conducting portions  11  in the wire harness  20  of the second embodiment, the wire harness  20  can be fitted to the interior finishing portion such as the roof, or the like of the car only by pushing the hook-shaped members  13  against the flocked portion if any. As a result, there is no need to prepare a separate fixing tool member that is used to fix the laminated wire harnesses  10 ,  20 . Also, even when two sheets of wire harnesses  10 ,  20  are jointed together and then fitted to the roof, or the like of the car, a cord providing space can be reduced because the conducting portions  11  and the bridge portions  12  are stacked mutually.  
         [0074]     Also, in a wire harness laminated structure shown in  FIG. 10 , the wire harness  30  of the third embodiment is put between the wire harness  10  of the first embodiment and the wire harness  30  of the second embodiment, and then laminated. In other words, the front face of the wire harness  20  and the back face of the wire harness  20  are opposed and then arranged such that the conducting portions  11  and the bridge portions  12  of respective wire harnesses are overlapped with each other, and then the hook-shaped members  13  on the conducting portions  11  and the loop-shaped members  14  on the bridge portions  12  are engaged with each other by pushing mutually the wire harnesses in the directions indicated with arrows A, B. Thus, the wire harness  20  and the wire harness  30  are jointed together.  
         [0075]     Then, the front face of the wire harness  30  and the back face of the wire harness  10  are opposed and then arranged such that the conducting portions  11  and the bridge portions  12  of respective wire harnesses are overlapped with each other, and then the hook-shaped members  13  on the conducting portions  11  and the loop-shaped members  14  on the bridge portions  12  are engaged with each other. Thus, the wire harness  20  and the wire harness  30  cab be jointed together. As a result, even when three sheets of wire harnesses  10 ,  20 ,  30  are jointed together and then fitted to the roof, or the like of the car, a cord providing space can be reduced because the conducting portions  11  and the bridge portions  12  are stacked mutually.  
         [0076]     Here, the invention of this application is not limited to the above embodiments. For example, in the above embodiments, the hook-shaped members  13  are implanted on the conducting portions  11  and also the loop-shaped members  14  are implanted on the bridge portions  12 . But the loop-shaped members  14  may be implanted on the conducting portions  11  and also the hook-shaped members  13  may be implanted on the bridge portions  12 .  
         [0077]     Although the invention has been illustrated and described for the particular preferred embodiments, it is apparent to a person skilled in the art that various changes and modifications can be made on the basis of the teachings of the invention. It is apparent that such changes and modifications are within the spirit, scope, and intention of the invention as defined by the appended claims.  
         [0078]     The present application is based on Japan Patent Application No. 2005-044235 filed on Feb. 21, 2005, the contents of which are incorporated herein for reference.