Abstract:
The present invention relates to a link bar for capacitors of an audio system, comprising a conducting portion and a connecting portion for connecting electrical poles of the capacitors together. The connecting portion stretches between the conducting portion. The link bar can be connected with another link bar by overlapping the connecting portions which will have the same height as the conducting portion after overlapping. In using the link bar, the desired number of capacitors are chosen and the link bars are assembled by mutually contacting the connecting portions. The maker can use one single link bar to connect capacitors instead of several kinds with various specifications of link bars.

Description:
FIELD OF THE INVENTION 
     The present invention relates generally to a link bar for the capacitor of a car audio system. More particularly, the present invention relates to a conjunctive bar used for connecting plural capacitors of car audio system in parallel. 
     BACKGROUND OF INVENTION 
     Normally car&#39;s battery supplies a car&#39;s power system. However, the car&#39;s battery may be in shortage when car&#39;s audio system needs more power in higher current. This consequently reduces the voice quality of the audio system. It is the reason why a capacitor is placed in parallel between the amplifier of audio system and the battery to prevent the shortage of high current power supply. 
     A capacitor is capable of charging a large quantity of electric power, and discharges in short time if needed. Thus, a car is, in general, equipped with a capacitor to supply sufficient power needed by the amplifier of audio system, in particular, when the demand for power is large. For example, the audio system is playing a chapter with super bass melody. Moreover, this device can make the bass response of the audio system stronger. 
     Another object to install capacitor in a car&#39;s audio system is to filter out some signal. When the power source connects the amplifier of car&#39;s audio system, it usually simultaneously produces some zigzag wave signal. &#39;I&#39;he zigzag wave signal, then, causes some audible noise signal in the audio system, therefore affecting the voice quality. 
     According to the forgoing description about the capacitor of a car&#39;s audio system, it is the reason why almost every car is equipped with capacitor therein. In general, a single capacitor can not satisfy the watt power needed for car audio. To connect plural capacitors in parallel is, therefore, needed by constructing a link bar between them. There are several locking holes in link bar in order to lock up capacitors together in parallel. The conventional link bar is always designed an unchangeable number of holes, and can not be freely assembled to each other. 
     Under some conditions, it may be another trouble that the maker needs to create some other types of link bar with different number of holes to meet the condition that the number of desired capacitors differs from the present one. To assemble them after choosing a suitable link bar with correct number of holes is then the other work to get all capacitors been connected together. 
     For example, as users want to connect two capacitors in parallel, they must choose a link bar  10  shown in FIG.  1 . This link bar  10  has a bolt hole  11  in both ends provided for a bolt  12  to get through and lock on to one pole, positive or negative, of the capacitor  20  to connect these two capacitors  20  together. 
     Accordingly, as users would like to connect three capacitors in parallel, the condition changes and differs from that practiced as in FIG.  1 . The link bar  10   a  shown in FIG. 2 is then needed. This link bar  10   a  has three bolt hole  11  thereon and is locked to three capacitors in order to get these capacitors connected in parallel. Of course, users can connect other number, such as four or more, of capacitors together and, therefore, must select a specific link bar with the same number of holes to meet the need. As a result, the maker must create numeral specifications of link bars and manufacture the link bar with various numbers of holes to meet the need. Consequently, the cost raises for manufacturing these kinds of link bars. 
     Referring to FIG. 3, when assembling link bars to capacitors, it is necessary to add a terminal  13  to connect the electrical wire thereon by way of locking the terminal  13  together with the bolt hole of the end side of link bar  10  on the same pole of the capacitor  20 . 
     In the conventional method of assembling, the terminal  13  is locked together with link bar  10  to the same pole by means of leading a bolt  12 screwing into the terminal  13  the bolt hole  11  of link bar  10 . However, as the side wall  16  of link bar  10  is arc-shaped and can not contact tightly together with the end face  14  of the terminal  13  face to face, the side wall  16  and the end face  14  contact with each other in the situation of point to surface instead, that is, the end face  14  is not in fully contact with the side wall  16 , and there exists a clearance between them. This may result in a serious trouble that the terminal  13  will turn around the bolt hole  11  for lacking a stop force against it during locking procedure, This situation may be dangerous and cause a short circuit of the released positive and negative poles of the capacitor. 
     SUMMARY OF THE INVENTION 
     Accordingly, the present invention provides mainly a link bar for capacitors of car audio system which is capable of assembling with each other and overlaps one another on both ends of link bar to construct a series of link bars, which, then, benefits users to compose link bars in different desired numbers of locking holes and obtain the flexibility of assembling and cost reduction by manufacturing only one single type of link bar. 
     In order to meet the object of the present invention, a link bar of the present invention comprises a conducting portion and a connecting portion for connecting electricity poles of said capacitors together. The connecting portion which stretches outward from both ends of the conducting portion can be connected with each other by overlapping the same, and has the same height as the conducting portion after overlapping the connecting portion for the users to utilize the desired number. 
     Another object of the present invention is to reduce the wobbling condition of the terminal during locking process. 
     To obtain the result the present invention has, at least, a flat surface that can tightly contact with the surface of the terminal in order to provide a supporting force to prevent the terminal from rotating during locking process. 
    
    
     These and other features of the present invention will become more fully apparent from the following description and dependent claims taken in conjunction with the accompanying drawings. 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The present invention is illustrated by the following drawings which are given by way of illustration only, and thus are not limitive of the present invention, and in which: 
     FIG. 1 is a perspective view of conventional link bars that connect two capacitors together. 
     FIG. 2 is a perspective view of another conventional link bars that connect three capacitors together. 
     FIG. 3 is an enlarged perspective view of conventional link bars and their bolt holes depicting that the side surface of the link bar can not fully contact the end surface. 
     FIG. 4 is a perspective view of the detailed structure of the embodiment of the present invention. 
     FIG. 5 is a perspective view of FIG. 4 depicting the link bar that is assembled with another one turned to opposite side. 
     FIG. 6 is a perspective view of the present invention, depicting the practicing of link bars connecting two capacitors in parallel. 
     FIG. 7 is a perspective view of the present invention, depicting the practicing of link bars connecting three capacitors in parallel. 
     FIG. 8 is a perspective view of another embodiment of the present invention. 
     FIGS. 9A and 9B are perspective views of FIG. 4, depicting the contacting status between the face of connecting part and the face of the terminal. 
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Embodiments of the present invention provide a link bar which can be mutually assembled with each other, which has connecting portion at both ends for locking on to connecting portion of the capacitor, and which can construct a series of link bars by overlapping the connecting portions thereof respectively. Therefore, this combines several capacitors in parallel and provides a flexible way to connect capacitors together easily for users who would like to connect a certain number of capacitors together. 
     The structure, assembling procedure and the usage of forgoing link bar is further described below. Firstly, referring to FIG. 4, it shows the perspective view of the structure of the present link bar. As illustrated in FIG. 4, the link bar  30  includes, at least, a conductor  31  consisting of a conducting portion  33  and tilt plates  34  stretching outward from both ends of conducting portion  33 , and connecting portions  32  that stretch outward with a half height of the conducting portion  33  and has a locking hole  37  thereon provided for a locking part to go through and then lock the connecting portion  32  to one electric pole of the capacitor. Accordingly, the length of the conducting portion  33  is about half the distance between the electric poles of two capacitors. The connecting portion  32  has the outline of pentagon, or multilateral shape. In addition, there is an end face  35  on its four sides having different length. 
     Since the structure and the outline of the present invention, the link bar  30 , are suitably designed, any connecting portion  32  of the link bar  30  can be assembled together by overlapping connecting portion  32  with another one to form a series of link bars. As shown in FIG. 5, the assembling method is firstly to choose one link bar which is upward placed, referred to link bar  30   a  thereafter, and the other link bar which is downward placed, referred to link bar  30   a  thereafter. When assembling them, to correctly put the connecting portion of the link bar  30   b , referred to connecting portion  32   b  thereafter, on the connecting portion of link bar  30   a , referred to connecting portion  32   a  thereafter, enables both of the locking hole  37  to precisely match each other and thus forms a link bar with three locking holes  37 . It is obvious that the other connecting portion of the link bar  30   a  and the link bar  30   b  also can be mutually connected to other link bars. Therefore, another kind of combined link bar can be assembled by users as required. When overlapping two connecting portion, the tilt plate  34  and the end face  35  of the downward connecting portion  32   b  are contacting with the end face  35  and the tilt plate  34  of upward connecting portion  32   a . At this moment, the height of these two connecting parts, upward connecting portion  32   a  and downward connecting portion  32   b , after piling up is equal to the height of the conducting portion  33  so as to prevent the uneven situation while assembling them to the capacitor. 
     Besides, it becomes very flexible and versatile in utilization that the serial link bar having locking holes needed to fit capacitors is composed of selecting the needed number of link bar in series. For example, when users would like to connect two capacitors  20  in parallel, simply locking the locking hole  37  already existing on the link bar itself to the electric poles of the capacitor  20  by putting locking part  38  through the locking hole  37 , as is illustrated in FIG.  6 . When applying more than two capacitors  20  is needed, for example, three capacitors  20 , it is no need to take a link bar which is specially made to have three locking holes  37  on it, as in FIG.  2 . 
     Under this condition, referring now to FIG. 5, applying two link bars  30  of the present invention and getting them assembled can do it. A composed serial link bar  40  with three locking holes  37  on it is then easily composed. The next procedure is to separately lock these three locking holes  37  to those three electric poles of capacitor  20  in turn. Referring to FIG. 7, these three capacitors  20  are eventually connected in parallel. 
     Needless to say, if users would like to connect four or more capacitors  20 , it is easy to achieve the requirement by fetching several link bars which have the total number of locking holes  37  the same as that of capacitor  20  and getting them assembled as described above. By the way introduced as forgoing, the maker just need to manufacture one single type of link bar and easily make it suitable to be applied on various numbers of capacitor  20 . To make many kind of capacitor  20  is no longer needed, the manufacturing fee and cost are thus lowered. 
     There are some variations on the connecting portion  32 , for example, referring to FIG. 4, to make the surface of the connecting portion  32  to a rough surface  39 . Referring now to FIG. 8, after practicing this, the grasp force between these two connecting portions  32  increases. 
     When assembling link bars to capacitors  20 , it is always needed to add a terminal  13  on the end of the connecting portion  32  in order to electrically connect a wire. At this moment, the connecting portion  32  of the present invention have four end faces  35  thereon and contact face to face with the end face  14  of the terminal  13  very tightly so that there is no clearance between the end face  35  and the end face  14 . Referring to FIGS. 9A and 9B, with the supporting of the end face  14 , the terminal  13  is free from rotating during locking process. It is important that the length of the end face  35  is longer than that of the end face  14  in order to secure that the full area of the end face  14  can contact the end face  35  so as to offer sufficient supporting force and that the terminal  13  does not rotate. In order to broaden the application, the length of the end face  35  differs and is designed to meet the length of the end face  14 . 
     EFFECTS OF THE INVENTION 
     1. The link bar of the present invention can be mutually assembled to form a serial link bar which has the desired number of locking holes for connecting capacitors and the cost for manufacturing one single type of link bar can be reduced. 
     2. There is an end surface on the connecting portion of the link bar and it contacts the other end surface by means of face to face, therefore, meets to each other tightly and has no clearance between both end surfaces, which prevents the connection during locking process from wobbling. 
     Numerous variations and modifications will suggest themselves to persons skilled in the arts, other than those already described, without departing the basic inventive concepts. Although the present invention has been described with respect to typical preferred embodiments thereof, it should be understood that the present inventions is not limited to these embodiments, and various changes or modifications may be made without departing from the scope of the present invention as defined by the appended claims.