JP5678331B1 - Connection parts for electronic parts and electrical parts - Google Patents

Abstract

By welding a rod-shaped branch conductor to a rod-shaped conductor, it is possible to easily and inexpensively connect an electronic component and an electric component according to the magnitude of the current capacity. A linear portion 11a of a rod-like conductor 11 electrically connecting electronic parts and electric parts is welded to a straight portion 12a of a rod-like branching conductor 12 along the longitudinal direction of the straight portion 11a. is there. [Selection] Figure 1

Description

  The present invention relates to a connecting member for electronic parts and electric parts in batteries, inverters, and other devices that require a large current.

  2. Description of the Related Art Conventionally, a connection member called a bus bar that electrically connects a plurality of electronic components and electrical components in a battery, an inverter, and other devices that require a large current has been widely used. This connecting member is designed to avoid interference with the electronic and electrical components in the controller, that is, to avoid the installation position of the electronic and electrical components, and both ends are connected to the terminals of the predetermined electronic and electrical components. Since it is necessary to arrange so as to be connectable, a conductive plate as a connecting member is used by being bent into a three-dimensional complicated shape. This connection member is obtained by bending a plate-shaped main body part having a predetermined thickness punched into a predetermined shape at a plurality of predetermined positions, and at the end of the main body part, a cable or a terminal of an electrical component is provided. A mounting hole for screw fixing is provided (see, for example, Patent Document 1).

  On the other hand, a plurality of external connection portions are integrally formed on a part of the bus bar which is a connection member as described above, and inductors for absorbing electrical noise included in the current flowing through the inverter to these external connection portions, There has been proposed one in which a capacitor terminal is subjected to micro resistance welding (see, for example, Patent Document 2).

JP 2003-45231 A JP 2008-193767 A

  However, since all of these conventional connecting members are formed into a three-dimensional predetermined shape by punching a conductive plate into a predetermined width and a predetermined shape and then bending the conductive plate, a large mold is required for punching. As a result, the manufacturing cost of the mold is increased, and the yield of the conductive plate is further deteriorated, so that the product cost is increased. Further, since the thickness of the conductive plate is small, when the current capacity is increased, it is necessary to increase the width of the material to be punched, and the installation space for the bus bar in the controller is increased. Furthermore, in the type of laminated bus bar in which insulating paper corresponding to the conductive plate size is interposed between a plurality of conductive plates, the cost of the insulating paper is increased.

  In addition, since the connecting member (bus bar) is a conductive plate, that is, a plate-like body, as described above, it is bent in the thickness direction so as to avoid the installation position of various electronic parts and electrical parts. It cannot be bent or twisted in a direction perpendicular to the direction. Therefore, there are cases where the both ends of the connecting member cannot be correctly drawn into the terminal positions of the electronic component and electrical component to be connected. In particular, in the case where a plurality of branch connection portions are integrally formed on a part of the plate-like connection member as described above, the position of the branch connection portion with respect to the connection member body is fixed, that is, the inductor, the capacitor, etc. Since there is no flexibility in positioning with respect to the electronic parts and electrical parts, even if the mounting position of the electronic parts and electrical parts to be connected is slightly shifted, the electrical connection of the branch connection part to the electronic parts and electrical parts is impossible. There was the inconvenience of becoming.

  Further, the branch connection portion also has a predetermined size that is integrally punched together with the connection member main body. Therefore, there is a limit in increasing the current capacity of the branch connection part, and there is a disadvantage that the expected noise reduction effect due to the inductance of the inductor connected to the branch connection part or the capacitance of the capacitor cannot be expected.

  The present invention has been made paying attention to such conventional problems, and the object of the present invention is to connect a rod-shaped conductor formed in a predetermined shape so as to avoid interference with electronic parts and electric parts. By connecting rod-shaped branch conductors that can be used to connect to other electronic parts and electrical parts in a timely manner, it is cheaper to connect the connection members that match the current electronic parts and electrical parts according to the current capacity. It is to be realized easily.

In order to achieve the above object, the connecting member of the electronic component and the electric component according to the present invention is connected to the straight portion of the rod-shaped conductor that is a non-punched product that electrically connects the electronic component and the electric component. parts along the longitudinal direction of the linear portion of the rod-shaped branch conductor is a non-perforated product is welded, the shape of the rod-shaped conductors and the rod-shaped branch conductor and said round bar der Rukoto. With this configuration, even if multiple electronic components and electrical components may be mixed in a narrow area, they are connected between the electronic components and electrical components to be connected so as to avoid interference with other electronic components and electrical components. It is possible to branch and connect other electronic components and electric parts to be connected to the middle of the rod-shaped conductor reliably and in a timely manner through the rod-shaped branch conductor so as to maintain an intended insulation distance. Further, since a sufficient welding area or welding space can be secured between the rod-shaped conductor and the rod-shaped branching conductor, welding can be performed at a portion where the rod-shaped conductor and the rod-shaped branching conductor are in linear contact with each other, and the welding strength is sufficiently increased. be able to.

Moreover, the connecting member of the electronic component or the electric component according to the present invention is characterized in that the whole of the rod-shaped branch conductor is made of metal.

The electronic component according to the present invention, electrical components of the connecting member portion to be welded together of the rod-shaped conductors and the rod-shaped branch conductor characterized by comprising processed into a planar shape. With this configuration, the contact area and welding area of the rod-shaped branch conductor with respect to the rod-shaped conductor can be increased, so that it is possible to suppress current loss (power loss) passing through these contact surfaces and to achieve the desired connection strength. Can be secured.

In addition, the connection member of the electronic component or the electrical component according to the present invention is: (a) the thickness of the rod-shaped branch conductor is different from the thickness of the rod-shaped conductor; (b) the rod-shaped branch conductor is the rod-shaped conductor. It is characterized by comprising at least one of a metal different from the body. By providing (a) above, it is possible to supply current (electric power) that matches the load capacity (current capacity) of electronic parts and electrical parts through the rod-shaped branching conductor, thereby reducing the amount of conductive material used and saving it. It will contribute to resource recycling. In addition, by providing the (b), it is possible to branch a current that matches the load capacity of the electronic component and the electric component, and further, it is possible to use it according to the corrosion resistance, strength, and weight (weight reduction).

  According to the present invention, a current is branched and supplied from a rod-shaped conductor to one or a plurality of other electronic components and electric components via a rod-shaped branch conductor in addition to a predetermined electronic component or electric component to be connected. This can be realized easily and inexpensively by a simple method of connecting the rod-shaped branch conductor to the rod-shaped conductor in advance or timely by retrofitting.

  The present invention has been briefly described above. The best mode for carrying out the present invention will be described below in detail with reference to the accompanying drawings.

It is a perspective view which shows the connection member of the electronic component which concerns on embodiment of this invention, and an electrical component. It is sectional drawing which shows the structural example of the welding part of the linear part of the rod-shaped conductor in FIG. 1, and the linear part of a rod-shaped branch conductor. It is a perspective view which shows the connection member of the electronic component which concerns on other embodiment of this invention, and an electrical equipment component. It is a perspective view of the connecting terminal part concerning other embodiments of the present invention.

FIG. 1 is a perspective view showing a connection member for an electronic component or an electrical component according to an embodiment of the present invention. The connecting member of the electronic component and the electric component of the present embodiment is a bus bar in which a rod-shaped branch conductor 12 is welded to a rod-shaped conductor 11 that electrically connects two electronic components A and B to be connected. The rod-shaped conductor 11 and the rod-shaped branch conductor 12 are formed in a predetermined cross-sectional shape such as a round bar or a square bar using copper as a whole as a material. The bar-shaped conductor 11 and the bar-shaped branch conductor 12 have the same thickness. The bar-shaped conductor 11 and the bar-shaped branch conductor 12 may have different thicknesses or different cross-sectional shapes. Both the rod-shaped conductor 11 and the rod-shaped branched conductor 12 are non-punched products.

  The rod-shaped conductor 11 includes a straight portion 11a, a bent portion 11b formed by bending one end of the straight portion 11a in the horizontal direction, and a bent portion 11c formed by bending the other end of the straight portion 11a vertically upward. It consists of. These bent portions 11b and 11c have hardness and thickness that can be bent using jigs at both ends while keeping the straight portion 11a horizontal.

  The rod-shaped conductor 11 is a passage of a large current. When the frequency of the current is high, the rod-shaped conductor 11 is caused to flow from the skin effect that current flows in a concentrated manner on the surface (skin) side of the rod-shaped conductor 11. A hollow round bar can be used, or the center can be made of an aluminum material that is lighter and stronger than copper. In order to increase the current capacity, it is desirable to increase the cross-sectional area. However, even with the same cross-sectional area, the round bar has a larger current capacity than the square bar, and the heat dissipation effect is excellent.

  Further, the caulking portions 13b and 14b of the terminal members 13 and 14 are caulked and fixed to both ends of the rod-shaped conductor 11, that is, the respective end portions of the bent portions 11b and 11c. These terminal members 13 and 14 have tongue pieces 13a and 14a at their ends, and are inserted into these tongue pieces 13a and 14a through screw shafts (not shown) that serve as terminals (not shown) of the electronic components A and B. Mounting holes 15 and 16 are formed. Therefore, the electronic components A and B can be electrically connected via the terminal members 13 and 14 and the rod-shaped conductor 11 by screwing the nuts into the screw shafts inserted through the mounting holes 15 and 16. In addition, it is good also as a terminal part by crushing the edge part 34 of a rod-shaped conductor and drilling the attachment hole 35, without using a single terminal member (refer FIG. 4).

  The terminal members 13 and 14 are preferably formed using a conductive material such as copper or aluminum. From the viewpoint of increasing the strength of the terminal members 13 and 14 as conductors, the copper is tin-plated, nickel-plated, or Stainless steel is preferred. If the surfaces of the terminal members 13 and 14 are plated, a conductive terminal having high conductivity or high heat resistance can be obtained.

  On the other hand, the bar-shaped branching conductor 12 can be a round bar or a square bar if necessary. Further, a conductive material such as aluminum can be used as the rod-shaped branching conductor 12 instead of copper. The rod-shaped branching conductor 12 is bent in an L shape in the horizontal direction, and the linear portions 12a and 12b are continuous. These straight portions 12a and 12b are shorter than the straight portion 11a of the rod-like conductor 11, and the straight portion 12a is brought into contact with the straight portion 11a along the longitudinal direction thereof and is melt-welded. More specifically, flat cut surfaces P and Q are formed in the portions to be welded of the straight portions 11a and 12a as shown in FIG. 2, and these cut surfaces P and Q are brought into contact with each other by fusion welding. .

  On the other hand, a terminal member 17 is caulked and fixed to the end of the straight portion 12 b of the rod-shaped branch conductor 12. The terminal member 17 has a tongue piece 17a, and a mounting hole 18 to be inserted into a screw shaft (not shown) to be a terminal (not shown) of the electronic component C is inserted into the tongue piece 17a. Therefore, the electronic component C and the electronic components A and B can be electrically connected via the terminal member 17 by tightening the nut to the screw shaft inserted through the mounting hole 18. In order to connect the electronic component C, the rod-shaped branch conductor 12 is welded to the rod-shaped conductor 11 in advance by wiring before wiring or after wiring. The terminal member 17 is made of a conductive material such as copper or aluminum, and when aluminum is used, it is desirable that the surface be plated with nickel. Further, the end portion 34 of the rod-shaped branch conductor may be crushed without using a single terminal member, and a mounting hole 35 may be formed to form a terminal portion (see FIG. 4).

  In addition, in the welding part of the said linear parts 11a and 12a, these linear parts 11a and 12a are in a line contact state mutually, and the current capacity in this contact part is small. For this reason, the flat cut surfaces P and Q are formed in the site | part which welds among the straight parts 11a and 12a as mentioned above, and these cut surfaces P and Q are made to contact at the time of welding.

  As a result, the straight portions 11a and 12a are in close contact with each other at the large cut surfaces P and Q, and the current density of current flowing from one of the straight portions 11a and 12a to the other through the cut surfaces P and Q is increased. be able to. And by close welding at the cut surfaces P and Q and welding between the straight portions 11a and 12a, the current capacity between these can be further increased to reduce current loss (power loss), and the mutual connection strength can be increased. Can also be increased.

  The rod-shaped conductor 11 shown in FIG. 1 is used as a current path of an AC-AC converter that connects a converter circuit A and an inverter circuit B in an inverter device, for example. Specifically, the electric component A is a converter, the electric component B is an inverter, and the electric component C is a pulsating current prevention capacitor, and a motor that supplies an AC power to a motor by performing variable voltage / variable frequency processing with an inverter device including them It can be used as a drive circuit.

  The rod-shaped branching conductor 12 is welded to the rod-shaped conductor 11 in advance or welded by a retrofitting method in order to connect the electronic component C as a pulsating flow prevention capacitor. As a result, it becomes possible to cope with additional connection of the pulsation prevention capacitor and other necessary electronic components, and the rod-shaped conductor 11 and the rod-shaped branch conductor 12 can be reliably positioned and welded to the connection terminals of the respective electronic components. it can. For welding between the straight portions 11a and 12a, various welding techniques such as gas welding, arc welding, electron beam welding, and laser welding can be used. Further, since both the rod-like conductor 11 and the rod-like branching conductor 12 are round bars, the heat generated based on the current loss can be efficiently dissipated to the periphery as compared with a connecting member made of a conventional conductive plate. In addition, there is an advantage that the desired shape can be easily formed.

  FIG. 3 is a perspective view showing another embodiment of the present invention. In this embodiment, a connecting member (bus bar) in which rod-shaped branch conductors 26 and 27 are connected to a rod-shaped conductor 21 that electrically connects two electronic components D and E is shown. The rod-shaped conductor 21 and the rod-shaped branch conductors 26 and 27 have the same thickness. The rod-shaped conductor 21 is a rod-shaped conductive material made of copper, and includes a straight portion 21a, a bent portion 21b bent vertically upward at one end of the straight portion 21a, and a horizontal direction at the other end of the straight portion 21a. And a bent portion 21c that is bent into two. Each of the bent portions 21b and 21c has a hardness and a thickness that can keep the straight portion 21a horizontal and bend or screw-bend both ends using a jig. The rod-shaped conductor 21 may be made of a conductive material such as aluminum.

  Terminal members 22 and 23 are caulked and fixed to the end portions of the bent portions 21b and 21c. The terminal members 22 and 23 are provided with mounting holes 24 and 25 that are inserted into screw shafts (not shown) serving as terminals (not shown) of the electronic components D and E in the tongue pieces 22a and 23a at the end portions. ing. Accordingly, the terminal members 22 and 23 and the electronic components D and E can be electrically connected by tightening nuts (not shown) into the screw shafts inserted through the mounting holes 24 and 25. In addition, it is good also as a terminal part by crushing the edge part 34 of a rod-shaped conductor and drilling the attachment hole 35, without using a single terminal member (refer FIG. 4).

  On the other hand, the rod-shaped branching conductors 26 and 27 are made of copper round bars, and are bent in the horizontal direction so that the straight portions 26a and 26b and the straight portions 27a and 27b are continuous to form an L shape. These linear portions 26a and 27a are melt welded to the linear portion 21a of the rod-shaped conductor 21 along the longitudinal direction thereof. More specifically, flat cut surfaces such as P and Q in FIG. 2 are formed in the portions to be welded of the straight portions 21a, 26a, and 27a, and these cut surfaces are brought into contact with each other by fusion welding. Also, terminal members 30 and 31 are caulked and fixed to the straight portions 26b and 27b, respectively. The rod-shaped branch conductors 26 and 27 may be made of a conductive material such as aluminum.

  Further, the terminal members 30 and 31 have tongue pieces 30a and 31a, respectively, and screw shaft insertion mounting holes 32 and 33 serving as terminals of the electronic components F and G are formed therein. Therefore, the electronic components F and G and the electronic components D and E can be electrically connected via the terminal members 30 and 31 by tightening nuts on the screw shafts inserted into the mounting holes 30 and 31. Become. In addition, it is good also as a terminal part by crushing the edge part 34 of a rod-shaped branching conductor and drilling the attachment hole 35, without using a single terminal member (refer FIG. 4).

  Even in this embodiment, the portions where the straight portions 21a of the rod-shaped conductor 21 and the straight portions 26a and 27a of the conductive branch conductors 26 and 27 are opposed to each other are defined as the flat cut surfaces P and Q as described above. By abutting, the contact area can be enlarged, and the current capacity of the current passing through the cut surfaces P and Q can be increased. In this case, the desired welding strength can be secured by the fusion welding between the straight portions 21a of the rod-like conductor 21 and the straight portions 26a and 27a of the conductive branch conductors 26 and 27.

  The rod-shaped conductor 21 shown in FIG. 3 is used, for example, as a power ground line connecting a capacitor for removing noise, an inductor, and a surge absorber. Specifically, the electronic component D can be used as a surge absorber, the electronic component E as a capacitor, the electronic component F as an auxiliary capacitor, and the electronic component G as an inductor. A terminal such as a ground line side cable in a power supply circuit (not shown) is connected to the terminal member 23 of the rod-shaped conductor 21.

  As described above, the connection member of the electronic component and the electrical component according to the present embodiment is a rod-shaped branch along the longitudinal direction of the linear portion with respect to the linear portion of the rod-shaped conductor that electrically connects the electronic component and the electrical component. It is the structure which welded the linear part of the conductor. Therefore, even if a plurality of electronic components and electrical components may be mixed in a narrow area, the rod-shaped conductor connected between the connection target electronic components and electrical components so as to avoid interference with other electronic components and electrical components. It is possible to reliably branch and connect other connection target electronic parts and electrical parts through the rod-shaped branching conductor in the middle of the circuit so as to maintain the desired insulation distance. Moreover, since the rod-shaped conductor and the rod-shaped branch conductor are each welded at the straight portion, a sufficient welding area or welding space can be secured between them, and their welding strength is extremely high. Furthermore, a connection member that does not require a metal mold for manufacturing the connection member, does not cause material loss, and can be easily formed into an intended shape can be obtained simply and inexpensively. Connection can be made in a timely manner.

  Note that the thickness of the rod-shaped branch conductor may be the same as or different from the thickness of the rod-shaped conductor. When the thickness of the rod-shaped branch conductor is different from the thickness of the rod-shaped conductor, the current (electric power) can be supplied through the rod-shaped branch conductor according to the load capacity (current capacity) of the electronic parts and electrical parts. Contributes to volume reduction and resource saving.

  The rod-shaped branched conductor and the rod-shaped conductor may be the same metal (for example, copper and aluminum), or may be made of different metals (for example, copper and aluminum, copper and stainless steel). When the rod-shaped branch conductor is made of a metal different from the rod-shaped conductor, it is possible to branch a current that matches the load capacity of the electronic component or the electric component. In addition, it can be used in accordance with corrosion resistance, strength, and weight (weight reduction).

  The rod-shaped branch conductor and the rod-shaped conductor may be welded by brazing.

  In the present invention, a current can be branched and supplied from a rod-shaped conductor to one or a plurality of other electronic components and electric components via a rod-shaped branch conductor in addition to a predetermined connection target electronic component and electric component. A simple technique of connecting a rod-shaped branch conductor to a rod-shaped conductor by welding has the effect that it can be realized easily and inexpensively, and is useful as a connection member for electrically connecting electronic components and electrical components. .

11, 21 Bar-shaped conductors 11a, 21a, linear portions 11b, 11c, 21b, 21c Bending portions 12, 26, 27 Bar-shaped branched conductors 12a, 12b, 26a, 26b, 27a, 27b Linear portions 13, 14, 17, 22 , 23, 30, 31 Terminal member 13a, 14a, 17a, tongue 13b, 14b, 17b, 22b, 23b, 30b, 31b Caulking portion 15, 16, 18, 24, 25, 32, 33 Mounting hole

Claims (4)

A straight portion of a rod-like branch conductor that is a non-punched product along the longitudinal direction of the straight conductor that is a non-punched product that electrically connects an electronic component and an electrical component. There are welded, the electronic component shapes of the rod-shaped conductors and the rod-shaped branch conductor and said round bar der Rukoto, electrical components of the connecting member.   2. The connecting member for electronic parts and electric parts according to claim 1, wherein the whole of the rod-shaped branching conductor is made of metal. 3. A connecting member for an electronic component or an electrical component according to claim 1, wherein a portion of the rod-shaped conductor and the rod-shaped branched conductor that are welded to each other is processed into a planar shape. The connection member for electronic parts and electric parts according to claim 1, 2 or 3, comprising at least one of the following characteristics.
(A) The thickness of the rod-shaped branched conductor is different from the thickness of the rod-shaped conductor.
(B) The rod-shaped branched conductor is made of a metal different from the rod-shaped conductor.

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