JP4382223B2 - Electrical connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electrical connector having large and small connection terminals attached thereto.
[0002]
[Prior art]
Conventionally, when a power supply line and a signal line are connected to the same electric device, when these current capacities are greatly different, it is usual to provide a connector separately.
[0003]
This is because the size of the connection terminal varies greatly depending on the size of the current capacity. If these connection terminals are mixed in one housing, the power line noise is likely to be superimposed on the signal line, and the assembly work is extremely difficult. It becomes.
[0004]
[Problems to be solved by the invention]
Therefore, in such a case, normally, two connectors for power supply and signal transmission must be used separately, and there is a drawback that the number of parts, the number of wires, the price, etc. increase.
[0005]
An object of the present invention is to solve the above-described problems and provide an electrical connector in which connection terminals having different current capacities are combined.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an electrical connector according to the present invention includes a large housing for accommodating a large connection terminal for power supply, a rear holder attached to a rear portion of the large housing, and a signal transmission smaller than the large connection terminal . In the electrical connector that accommodates the small connection terminal and is disposed in the large housing and includes a small housing smaller than the large housing , the rear holder is in a temporarily locked state with respect to the large housing and further moved forward. In the locked state, the large housing can be locked to the rear portion, and in the fully locked state, the large connection terminal inserted from the rear into the terminal receiving hole in the large housing in the temporarily locked state is used as the rear holder. The small housing is held while being locked by a provided locking arm .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiments shown in the drawings.
1 is a plan view of an electrical connector 1 according to a first embodiment in which two types of male connection terminals are accommodated, FIG. 2 is a side view, and FIG. 3 is a cross-sectional view taken along line AA in FIG. The electrical connector 1 includes a large housing 2 as shown in the front view of FIG. 4 and a rear holder 3 attached to the large housing 2 from the rear. In the terminal housing hole 4 at the top of the large housing 2, for example, a plurality of male large connection terminals 6 having a large current capacity for power supply and having the electric wire 5 connected to the rear end are accommodated.
[0008]
Then, the bottom of a large housing 2, a small compact housing 7 than the large housing 2 is inserted from the bottom wall to form an opening portion 2a of the large housing 2 in a large housing 2 is held by the rear holder 3. In the terminal housing hole 8 of the small housing 7, a plurality of male small connection terminals 10 having a current capacity smaller than that of the large connection terminal 6 and connected to the signal transmission wire 9 at the rear end are accommodated. These small connection terminals 10 are locked to the small housing 7 by locking claws 7a.
[0009]
Both the large connection terminal 6 and the small connection terminal 10 are arranged so that their tongue-like connection portions are oriented toward the mating electrical connector at the fitting portions of the housings 2 and 7 with the mating electrical connector. The small connection terminal 10 is located in front of the large connection terminal 6.
[0010]
The bottom wall of the rear holder 3 is provided with an opening through which the small housing 7 is inserted from below. Further, on both the wall of the front portion of a large housing 2, the lock engaging portion 11 for locking the mating electrical connector when mating with a mating electrical connector is provided, large connected to the upper A hole 12 for inserting a jig when the terminal 6 is extracted is provided.
[0011]
FIG. 5 is an explanatory view of the assembly process, in which the small housing 7 containing the small connection terminals 10 is inserted into the large housing 2. At this time, the small housing 7 and the large housing 2 are locked by locking means such as a locking protrusion and a locking groove (not shown). Next, the rear holder 3 is inserted from the rear of the large housing 2 and the rear holder 3 is temporarily locked to the large housing 2 by using the first claw portion 3a. When the large connection terminal 6 is pushed into the terminal accommodating hole 4 of the large housing 2 from the rear portion of the rear holder 3 at the stage of temporary locking, the state shown in FIG.
[0012]
Subsequently, when the rear holder 3 is pushed into the large housing 2, the rear holder 3 is brought into the final locking state shown in FIG. 3 with respect to the large housing 2 by the second claw portion 3b. In this case, each terminal accommodating holes 4 is inserted locking arm 3c that are provided in the rear holder 3, a large connector 6 engaged by the pawl portion formed on the locking arm 3c, the movement of a large connector 6 Is prevented.
[0013]
In this way, the large connection terminal 6 and the small connection terminal 10 having different current capacities can be easily accommodated in the same large housing 2, and the connection terminals 6 and 10 are partitioned by the separate housings 2 and 7, respectively. The connection terminals 6 and 10 are separated from each other by the housing 7 and the distance between them is increased, and the possibility of noise from the power supply wire 5 to the signal wire 9 is reduced.
[0014]
FIG. 6 is a plan view of a mating electrical connector 21 according to a second embodiment in which female connection terminals corresponding to the large connection terminal 6 and the small connection terminal 10 of the first embodiment are housed, and FIG. FIGS. 8A and 8B are sectional views taken along line B-B in FIG. 6, and the electrical connector 21 is fitted to the electrical connector 1 of the first embodiment.
[0015]
The electrical connector 21 includes a large housing 22 and a rear holder 23 as shown in the front view of FIG. 9, and a female large connection terminal 25 having an electric wire 24 connected to the rear end is provided in a terminal receiving hole 26 at the upper portion of the large housing 22. Has been inserted. Similarly, a small housing 30 in which a female small connection terminal 28 having an electric wire 27 connected to the rear end is accommodated in a terminal accommodating hole 29 is fixed to the lower portion of the large housing 22. That is, the large connecting terminal 25 to the top of the large housing 22 is inserted with the rear holder 23, a small housing 30 is mounted to a mounting portion provided in the lower portion of the large housing 22, a large housing 22 by a small housing 30 rear holder 23 It is fixed to.
[0016]
Further, on both sides of the large housing 22 are provided lock arms 31 for locking with the lock engaging portion 11 of the mating connector. Further, the hole 32 provided in the upper portion of the large housing 22 is for inserting a main body jig when the large connection terminal 25 is inspected, and the hole 33 is a jig for extracting the large connection terminal 25. Is for inserting.
[0017]
FIG. 10 is an explanatory view of the assembly process of the electrical connector 21, and after the small housing 30 is attached to the large housing 22, the rear holder 23 is temporarily locked to the large housing 22 using the first claw portion 23 a of the rear holder 23. To do.
[0018]
At this stage, the large connection terminal 25 is inserted into the large housing 22, and then the rear holder 23 is pushed in, and finally locked to the large housing 22 by the second claw portion 23b as shown in FIG. At this time, the large connection terminals 25 are individually locked in the terminal receiving holes 26 of the large housing 22 by the locking arms 23 c of the rear holder 23.
[0019]
When fitting the electrical connector 1 of the first embodiment and an electrical connector 21 of the second embodiment, more wires 5 and 24 are electrically connected to a large connecting terminal 6 and a large connecting terminals 25, small at the same time more wires 9, 27 are electrically connected to the connecting terminal 10 and the small connecting terminal 28. At the same time, the lock engaging portion 11 and the lock arm 31 are locked, and the two electrical connectors 1 and 21 cannot be separated in an emergency.
[0020]
In the first and second embodiments described above, the round electric wires 5, 9, 24, 27 are crimped to the connection terminals 6, 10, 25, 28. Instead, the connection terminals 6, 10, , 25, 28 can be connected to a flat cable having a foil-like conductor.
[0021]
In the first and second embodiments described above, it has been described that one small housing 7 and 30 is combined with each of the large housings 2 and 22 , but there may be a plurality of small housings 7 and 30. Good. Furthermore, there is no problem even if these small housings 7 and 30 are not of the same type.
[0022]
【The invention's effect】
As described above, the electrical connector according to the present invention can be made into one connector by assembling the small housing containing the small connection terminals into the large housing containing the large connection terminals, and the number of parts is reduced. Assembly wiring processing becomes easy.
[Brief description of the drawings]
FIG. 1 is a plan view of a first embodiment.
FIG. 2 is a side view.
FIG. 3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a front view of the large housing in a state where the small housing is assembled.
FIG. 5 is an explanatory diagram of an assembly process.
FIG. 6 is a plan view of a second embodiment.
FIG. 7 is a side view.
8 is a cross-sectional view taken along line BB in FIG.
FIG. 9 is a front view of the large housing in a state where the small housing is assembled.
FIG. 10 is an explanatory diagram of an assembly process.
[Explanation of symbols]
1,21 Electrical connector 2,22 Large housing 3,23 Rear holder 5,9,24,27 Electric wire 6,10,25,28 Connection terminal 7,30 Small housing

Claims (2)

A large housing for accommodating a large connection terminal for a power supply, a rear holder attached to the rear portion of the large housing , a small connection terminal for signal transmission smaller than the large connection terminal , and disposed in the large housing In the electrical connector provided with a small housing smaller than the large housing , the rear holder can be locked to the rear portion of the large housing in a temporarily locked state with respect to the large housing and in a final locked state moved further forward. In the main locking state, the large connection terminal inserted from the rear into the terminal receiving hole in the large housing in the temporary locking state is locked by a locking arm provided in the rear holder, and the small housing is An electrical connector characterized by holding . The electrical connector of claim 1 wherein the compact housing, characterized in that the assembled and inserted into the large housing.

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