Patent Application
20140045381
This invention relates to a joint connector.
A wiring harness is arranged in a car so as to transmit data about conditions of a control devise or an engine, a driving speed or failure diagnosis through CAN (Control Area Network). Such wiring harness is connected electrically to a plurality of sub harnesses. The sub harness includes a joint connector for separating an electric circuit.
The joint connector includes a ferrite component to remove noise overlapped on the data for reducing bad effect on transmitting data, which controls various electric unit mounted in the car through CAN communication, by noise radiation (for example, see patent documents 1-3).
The joint connector shown in patent documents 1-3 includes a connector housing to be fitted with a mating connector, and a terminal received in the connector housing so as to be electrically connected with a terminal of the mating connector. The terminal is formed by electrically conductive sheet metal and including a bar shape busbar, and a plurality of needle shape terminal portions extending from the busbar so as to be connected with the terminal of the mating connector. The terminal is provided at the needle shape terminal portions with a ferrite component to be inserted to the needle shape terminal portions.
According to the above usual joint connector shown in patent document 1, there is a problem that a structure of the joint connector becomes complicated by providing a plurality of through holes, through which the needle shape terminals are inserted, at the ferrite component, so that strict dimension control is required, and resulted in increasing cost. Furthermore, there is troublesome that the ferrite component formed specifically is required.
A usual joint connector shown in the patent document 2 or 3 is provided at a needle shape terminal portion with a ferrite component. Thereby, an interval between the needle shape terminal portions is wider than an interval between terminals of usual general-purpose connector, so that there is a problem that the joint connector becomes larger than the general-purpose connector.
According to the above problems, an object of the present invention is to provide a joint connector which has an interval between needle shape terminal portions, which insert through each ferrite component, same as an interval between terminals of a general-purpose connector, so as to be electrically connectable with the usual general-purpose connector, and is miniaturized.
In order to overcome the above problems and attain the object, the present invention is to provide a joint connector, which includes a terminal, a ferrite core arranged at the terminal, and a connector housing receiving the terminal, and in which the terminal includes a busbar and a plurality of needle shape terminal portions extending from the busbar at an interval along a lengthwise of the busbar, and the ferrite core includes a first ferrite core arranged at abase end of the needle shape terminal portion and a second ferrite core arranged at an intermediate portion of the needle shape terminal portion, and the first ferrite core and the second ferrite core are arranged alternately at each of the plurality of needle shape terminal portions.
The joint connector is further specified that the interval between the needle shape terminal portions is formed same as an interval between terminals of a general-purpose connector.
The joint connector mentioned above is further specified that the housing includes an inner housing in which the terminal is arranged, and an outer housing having an inner housing receiving section receiving the inner housing, and the inner housing includes a busbar receiving section receiving the busbar of the terminal and a first ferrite core receiving section receiving the base end of the needle shape terminal portion of the terminal and the first ferrite core, and a second ferrite core receiving section receiving the intermediate portion of the needle shape terminal portion and the second ferrite core, and the first ferrite core receiving section and the second ferrite core receiving section are arranged alternately about the plurality of needle shape terminal portions, and a first projection which projects toward the first ferrite core receiving section and opens a through hole which the needle shape terminal portion is inserted, and a second projection which projects toward the second ferrite core receiving section and opens a through hole which the needle shape terminal portion is inserted.
According to the above-mentioned invention, the first ferrite core arranged at base end of the needle shape terminal portion and the second ferrite core arranged at the intermediate portion of the needle shape terminal portion are alternately provided about the plurality of needle shape terminal portions. Thereby, without changing dimensions of the first ferrite core and the second ferrite core, an interval between the needle shape terminal portions can be shortened. Therefore, the terminal including the needle shape terminal portions can be miniaturized and the joint connector can be miniaturized.
According to the above-mentioned invention, the interval between the needle shape terminal portions is formed same as the interval between terminals of the general-purpose connector. The joint connector can be connected with the general-purpose connector. Thus, the joint connector which is miniaturized and has capability of general-purpose can be provided.
According to the above-mentioned invention, the busbar of the terminal is received in the busbar receiving section of the first inner housing, and the first ferrite core is received in the first ferrite core receiving section, and the second ferrite core is received in the second ferrite core receiving section of the second inner housing, and the first ferrite core receiving section and the second ferrite core receiving section are provided alternately about the plurality of needle shape terminal portion. Thereby, without changing dimensions of the first ferrite core and the second ferrite core, an interval between the needle shape terminal portions can be shortened with a relative simple structure. Therefore, the joint connector, which is miniaturized with a simple structure, can be provided.
The terminal 3 is formed into a comb shape by an electrically conductive metal sheet as shown in
In the busbar 28, a plurality of holes 31 (10 pieces for example) is arranged at even intervals along a lengthwise direction of the busbar 28. Engaging projections 32, 32 which are engaged with an inner wall of a busbar receiving section 12 of a later-described first inner housing 6 are provided at both ends along the lengthwise direction of the busbar 28. Projecting height of the engaging projection is configured to increase toward the needle shape terminal portions 29.
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The first projection 23, as shown in
The through hole 24 is formed into a round shape so as to insert the needle shape terminal portion 29 of the terminal 3. Two rows of the through holes 24 are arranged so as to insert each of the needle shape terminal portions 29 of the two terminals 3a, 3b.
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A distance between the inner surfaces 13, 13 is configured to be slightly wider than a width of the second inner housing 7 and be wide so that the convex portions 26, 26 of the second inner housing 7 push the inner surfaces 13, 13.
The press portion 16 includes a plurality of second projections 17 (5 pieces in the embodiment) preventing rattle motion of the second ferrite core 10b received in the second ferrite core receiving section 36; and a plurality of through holes 19 (6 holes in the embodiment) arranged at both sides of the second projection 17 so as to insert the needle shape terminal portion 29 of the terminal 3 therethrough.
The second projection 17 is configured to have a projection height so as to abut on the second ferrite core 10b received in the second ferrite core receiving section 36. The second projection 17 is provided with a through hole 18 which each of needle shape terminal portion 29 even-numbered from the end of the two terminal 3 is inserted through. The through hole 18 is formed into a round shape having a diameter so as to insert the needle shape terminal portion 29. Dimensional relation between the second projection 17 and the second ferrite core 10b can be adjusted suitably in any cases of abutting to each and not abutting.
The through hole 19 of the press portion 16 is formed into a round shape so as to insert the needle shape terminal portion 29 odd-numbered from the end of the terminal 3.
The ferrite core 10 includes the first ferrite core 10a and the second ferrite core 10b. As shown in
In the embodiment, the first ferrite core 10a is the ferrite core received in the first ferrite core receiving section 21 of the first inner housing 6, and the second ferrite core 10b is the ferrite core received in the second ferrite core receiving section 36 of the second inner housing 7. That is the same ferrite core is applied to the first ferrite core 10a and the second ferrite core 10b.
Each of the needle shape terminal portion 29 odd-numbered from the end of the terminal 3a, 3b is inserted through the first ferrite core 10a received in the first ferrite core receiving section 21 of the first inner housing 6. Each of the needle shape terminal portion 29 even-numbered from the end of the terminal 3a, 3b is inserted through the second ferrite core 10b received in the second ferrite core receiving section 36 of the second inner housing 7.
Assembling process of the joint connector 1 structured above will be described hereafter. The outer housing 5, the first inner housing 6, the second inner housing 7, the terminals 3a, 3b, the first ferrite core 10a, and the second ferrite core 10b are separately and previously manufactured.
As shown in
Successively, each of the needle shape terminal portions 29 odd-numbered from the end of terminal 3a, 3b is inserted through the through hole 24 of each of the plurality of first projections 23 of the second inner housing 7, and each of the needle shape terminal portions 29 even-numbered from the end of the terminal 3a, 3b is inserted through the through hole 25 of each of the plurality of second ferrite core receiving sections 36 of the second inner housing 7. Thereby, the second inner housing 7 is arranged on the first inner housing 6. The first ferrite core 10a and the second ferrite core 10b are arranged in two stages at interval along the lengthwise direction of the needle shape terminal portion 29. Thus, each of the needle shape terminal portions 29 odd-numbered is inserted through the first ferrite core 10a and each of the needle shape terminal portions 29 even-numbered is inserted through the second ferrite core 10b. Therefore, the interval between the needle shape terminal portions 29 in the case can be reduced smaller than the interval when a plurality of ferrite cores is arranged in the same plane.
Successively, each of the plurality of second ferrite cores 10b is received in each of the plurality of second ferrite core receiving sections 36 of the second inner housing 7. At the time, each of the needle shape terminal portions 29 even-numbered from the end of the terminal 3a, 3b is inserted through the second ferrite core 10b.
The first inner housing 6 and the second inner housing 7 are inserted into and fixed in the inner housing receiving section 38 of the outer housing 5. At the time, the lock projections 40, 40 of the first inner housing 6 is engaged with the lock hooks 14, 14 of the inner housing receiving section 38, and the convex portions 26, 26 push the inner surface 13 of the inner housing receiving section 38, so that the first inner housing 6 and the second inner housing 7 are securely fixed in the outer housing 5.
The joint connector 1 assembled as shown above is connected with the sub harness 61 having a plurality of electric wires 63 (22 wires in the embodiment) and the general-purpose connector 62 (male connector) joined at an end of the plurality of electric wires 63. At the time, the interval of the terminal of the general-purpose connector 62 and the interval of the terminal 3 of the joint connector according to the present invention are designed to be the same value. Thereby, the general-purpose connector 62 can be fitted into the connect portion 9 of the joint connector 1 so that terminals of the both connectors can be electrically connected.
In the embodiment, the joint connector 1 has 22 pins which is formed by two terminals 3a, 3b each having 11 pins of the needle shape terminal portions 29. As shown in
According to the embodiment, the joint connector 1 includes the terminal 3 provided with the ferrite core 10, and the connector housing 5 receiving the terminal 3. The terminal 3 includes the busbar 28 and the plurality of needle shape terminal portions 29 extending from the busbar 28 at intervals along the direction of the lengthwise of the busbar 28. The ferrite core 10 includes the first ferrite core 10a arranged at the base end 29a of the needle shape terminal portion 29 and the second ferrite core 10b arranged at the intermediate portion 29b of the needle shape terminal portion 29. The first ferrite core 10a and the second ferrite core 10b are arranged alternately at the plurality of needle shape terminal portions 29. Furthermore, the interval between the needle shape terminal portions 29 is formed same as the interval between the terminals of the general-purpose connector 62.
Thus, The first ferrite core 10a arranged at the base end 29a of the needle shape terminal portions 29 and the second ferrite core 10b arranged at the intermediate portion 29b of the needle shape terminal portions 29 are arranged alternately at the plurality of needle shape terminal portions 29, so that without change the dimensions of the first ferrite core 10a and the second ferrite core 10b, the intervals between the needle shape terminal portions 29 can be shortened. Therefore, the terminal 3 provided with the needle shape terminal portions 29 can be miniaturized, so that the joint connector 1 can be miniaturized.
The interval between the needle shape terminal portions 29 is formed same as the interval between the terminals of the general-purpose connector 62, so that the joint connection has general-purpose performance so as to connect with the general-purpose connector 62. Thus, the joint connector which is miniaturized and general-purpose, can be provided.
The present inventions are described based in the embodiments as mentioned above, but the present invention is not limited in above embodiments. Various change and modifications can be made with the scope of the present invention.
