JP2004031206A - Electric connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To connect a crimping contact at a cable end to a plate contact type male contact in a mating connector in the connection of a cable and the contact by a crimping structure, for example. <P>SOLUTION: An electric connector 1 electrically connecting a plate contact to the cable by being fitted to the plate contact type mating connector has a contact piece sliding and coming in contact with the plate contact on the tip side of the contact in an insulating housing 2, and the required number of crimping contact corresponding contacts 3 having connection pieces fitted to the crimping contact for the cable are installed on the contact rear end side. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electrical connector for connecting a cable and a contact by a crimping structure, for example, for connecting a crimping contact at an end of a cable to a flat contact type male contact in a mating connector.
[0002]
[Prior art]
Conventionally, as shown in FIG. 8, the end of the cable 22 is crimped to the rear end of the crimp contact 21 with a tool or the like, and the crimp contact 21 is attached to the male contact 23 a of the male connector 23. To fit the crimp contact 21, the connection opening 23 b of the male connector 23 is guided through each of a plurality of insertion holes 24 a provided from the one end opening of the female connector 24 into the connection opening 23 b and fixed. Is inserted and fitted.
[0003]
The male contacts 23a are usually square pins. The size is such that it does not buckle even if the crimp contact 21 is repeatedly inserted and removed.
[0004]
[Problems to be solved by the invention]
In recent years, the male-type contact 23a has become thinner and thinner due to the lightness, shortness, and size of the device and the like, and the possibility of buckling has appeared. Therefore, as shown in FIG. Is formed, and a male connector 20 having a male contact pin 26 provided thereon in parallel is known. The presence of the flat plate 25 eliminates the possibility of buckling even if it is repeatedly inserted and removed.
[0005]
However, in this contact connection structure, the female contact to be connected to the male contact pin 26 is a bellows type having a contact piece on the tip end side that is in sliding contact with the upper surface of the male contact pin 26. At the rear end side where the 22 is connected, a cable connection structure is often formed by soldering or pressure welding. Therefore, it becomes difficult to use a crimp-type contact that is easily connected by using a crimping tool.
[0006]
Further, in the case of a bellows-type female contact, in the case of a connection structure in which the cable 22 is soldered, there is a problem that the number of steps is increased and the cost is increased, and the clamp for fixing the cable is also a separate step. Further, in the case of a connection structure in which pressure is applied, there is a problem that it is not suitable for a high current such as a power supply and the cable fixing force is uneasy. The electric connector according to the present invention has been proposed to solve such a problem.
[0007]
[Means for Solving the Problems]
The gist of the present invention for solving the above-mentioned problems of the electrical connector is to provide an electrical connector that is fitted to a mating connector of a flat contact type to electrically connect the flat contact and the cable, and an insulating housing of the connector. A required number of crimp-compatible contacts, each having a contact piece sliding on the flat contact of the mating connector on the contact tip side and a joining piece fitting on the crimp contact for the cable on the rear end side of the contact, are additionally provided. That is being done.
[0008]
The insulating housing includes a connector housing for housing the front end side of the crimp-compatible contact in the contact hole and fitting to the mating connector, and a cable housing for housing the rear end side of the crimp-compatible contact in the internal space, The rear part of the connector housing and the front part of the cable housing are integrally fitted to each other.
[0009]
ADVANTAGE OF THE INVENTION According to the electrical connector which concerns on this invention, even if it is a mating connector of a flat contact type, it can connect using the crimp contact at the cable end part via the said electrical connector, without fear of buckling. become. Therefore, connection of the cable is facilitated.
Further, by forming the insulating housing into two pieces, a connector housing and a cable housing, and assembling them integrally, the bellows-type contact piece and the crimp contact joining piece are provided. It is possible to easily mount the crimp-compatible contact composed of
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the electrical connector 1 according to the present invention will be described with reference to the drawings. To facilitate understanding of the present invention, portions corresponding to the conventional example will be described with the same reference numerals as in the conventional example.
[0011]
The electrical connector 1 is for electrically connecting the flat contact 26 and a cable 22 such as a power supply when the mating connector 20 is a flat contact type as shown in FIG.
[0012]
As shown in FIG. 1, the electrical connector 1 includes an insulating housing 2 forming a housing of the connector, and a plurality of crimp-compatible contacts 3 disposed in parallel with the insulating housing 2.
[0013]
As shown in FIGS. 1 and 2, the insulating housing 2 of the connector 1 houses a contact piece 3a on the tip end of the crimp-compatible contact 3 in a contact hole 4a and fits into a mating connector 20. And a cable housing 5 for accommodating the joint piece 3b on the rear end side of the contact 3 for crimping in the internal space 5a.
[0014]
As shown in FIG. 3, the connector housing 4 has contact holes 4 a disposed in parallel in a space on the distal end side thereof, and the connector housing 4 can be inserted into the upper and lower surfaces of the housing when the connector housing 4 is fitted to the cable housing 5. Two locking portions 4b for stopping are provided. In addition, an engagement arm 4c projects from the housing side edge on the rear end side, and fits into an engagement hole 5f of the cable housing 5 described later.
[0015]
As shown in FIG. 4, the cable housing 5 has a space 5b on the front end side for fitting the rear end of the connector housing 4, and the fitting arm 4c is fitted therein. A hole 5c is provided. A required number of rectangular through holes 5d facing the space 5b and penetrating to the rear side are provided. At the rear end side, a part to which the crimp contact 21 is attached is provided, and is separated by a wall 5e provided at a required interval. On the upper and lower surfaces of the housing 5, a fitting hole 5f penetrating from the space portion 5b to the outside is formed, and the engaging portion 4b is engaged with the fitting hole 5f.
[0016]
As shown in FIG. 5, the crimp-compatible contact 3 has a bellows-type contact piece 3a formed on the front end side thereof for sliding contact with the flat plate contact 26 of the mating connector 20, and has a flat and rectangular cross-section on the rear end side. A piece 3b is formed. Further, the end face 3c of the flat portion left unbent at one end of the joining piece 3b prevents the bent portion 3d from being bent by a pressing force at the time of fitting by a crimping contact 6 described later which is crimped to the cable 22. There is for.
[0017]
In order to incorporate the crimpable contact 3 into the insulating housing 2, first, the contact piece 3a is inserted into the connector housing 4 from behind the contact hole 4a and press-fitted, and the crimpable contact 3 is assembled. .
[0018]
Next, with respect to the cable housing 5, the joining piece 3b of the crimp-compatible contact 3 is aligned with the rectangular through hole 5d, and the engaging arm 4c of the connector housing 4 is fitted into the engaging hole 5c. Align and insert each. As shown in FIG. 1, the joining piece 3b protrudes into the internal space 5a, and the locking portion 4b engages with the engaging hole 5f to prevent it from falling off.
[0019]
Thus, as shown in FIGS. 1 and 2, the rear part of the connector housing 4 and the front part of the cable housing 5 are integrally fitted to each other to form the insulating housing 2.
[0020]
As shown in FIG. 6, a crimp contact 6 for crimping the end of a cable 22 such as a power cable with a tool or the like includes a grasping portion 6a for grasping the cable 22, a crimping portion 6b for crimping a core wire, and the joining piece 3b. An engaging portion 6c formed so as to be engaged and a detachment prevention protrusion 6d are formed.
[0021]
In this way, to electrically connect the mating connector 20 using the electric connector 1 of the present invention, as shown in FIG. 6 is inserted from the back of the internal space 5a, fitted to the joining piece 3b, and connected. Since the joining piece 3b is flat and has a much larger cross-sectional area than each of the pins of the conventional example, there is no danger of buckling. Also, even if the end face 3c receives a pressing force in the forward and backward directions at the time of connection, the housing for the connector is used. 4, the end surface 3c abuts against the end surface 4d of the housing to obtain a reaction force, so that the bent portion 3d is not bent.
[0022]
After attaching the crimp contact 6 to the electrical connector 1, the lid member 7 is closed to the internal space 5a as shown in FIG. The guide projection 7a protruding from the lid member 7 is inserted into a guide hole 5g (see FIG. 4B) of the cable housing 5, and the locking projection 7b is similarly fitted into a locking hole 5h of the housing 5 (FIG. 4). (See (B)) and locked. By attaching the lid member 7 to the cable housing 5, the detachment prevention protrusion 6 d of the crimp contact 6 is locked to a part of the lid member 7, and the cable 22 is prevented from coming off in the front-rear direction.
[0023]
Then, as shown in FIG. 7, the electric connector 1 to which the cable 22 is connected is fitted and connected to a mating connector 20 of a flat contact type, and the male contact pin 26 and the crimp contact 6 are connected to a crimp-compatible contact. An electrical connection is achieved via 3.
[0024]
【The invention's effect】
As described above, the electrical connector according to the present invention is an electrical connector that fits with a mating connector of a flat contact type and electrically connects the flat contact and the cable, and the insulating housing of the connector includes: A required number of crimp-compatible contacts having a contact piece slidingly contacting the flat plate contact of the mating connector on the contact tip side and a joining piece fitting on the cable crimp contact on the contact rear end side are provided in parallel. Therefore, even with a mating connector of a flat contact type, it is possible to use a crimp contact at a cable end without buckling of a joining piece of a crimp-compatible contact, and to easily connect a cable to a contact. Become.
[0025]
The insulating housing includes a connector housing for housing the front end side of the crimp-compatible contact in the contact hole and fitting to the mating connector, and a cable housing for housing the rear end side of the crimp-compatible contact in the internal space, Since the rear part of the connector housing and the front part of the cable housing are integrally fitted together, not only is it easy to incorporate the crimp-compatible contact, but also a reaction force portion of the joint piece is formed. Thus, an excellent effect that the crimp contact can be firmly inserted and fitted can be obtained.
[Brief description of the drawings]
FIG. 1 is a sectional view (A) of an electric connector 1 according to the present invention, and a sectional view (B) showing a fitting portion of an insulating housing.
FIG. 2 is a rear view (A), a plan view (B), and a front view (C) of the insulating housing 2 in the electrical connector 1 according to the present invention.
FIG. 3 is a rear view (A), a plan view (B), a side view (C), and a front view (D) of the connector housing 4 in the electrical connector 1 according to the present invention.
FIG. 4 is a rear view (A), a plan view (B), a side view (C), and a front view (D) of the cable housing 5 in the electrical connector 1 according to the present invention.
FIG. 5 is a plan view (A) and a front view (B) of a crimp-compatible contact 3 in the electrical connector 1 according to the present invention. FIG.
6A is a plan view of the crimp contact 6 attached to the carrier 8, FIG. 6B is a front view of the crimp contact 6 cut from the carrier 8, and FIG. FIG. 3D is a cross-sectional view (D) along the line BB.
FIGS. 7A and 7B are explanatory views showing a use state of the electric connector 1. FIGS.
FIG. 8 is an explanatory diagram showing a usage state of a female connector according to a conventional example.
9 is a sectional view (A), a plan view (B), and a bottom view (C) of the mating connector 23. FIG.
[Explanation of symbols]
1 electrical connector, 2 insulated housing,
3 Contact for crimping, 3a Contact piece,
3b rear end side, 3c end face,
3d bend, 4 connector housing,
4a contact hole, 4b locking part,
4c engaging arm, 5 cable housing,
5a internal space, 5a internal space,
5c fitting hole, 5d through hole,
5e wall, 5f engagement hole,
5g guide hole, 5h locking hole,
6 crimp contact, 6a gripper,
6b crimping part, 6c engaging part,
6d slip-off prevention projection, 7 lid member,
20 mating connector, 22 cable,
25 plate, 26 plate contact.

Claims (2)

An electrical connector for electrically connecting a flat contact and a cable by fitting to a mating connector of a flat contact type,
In the insulating housing of the connector,
A required number of crimp-compatible contacts having a contact piece slidingly contacting the flat plate contact of the mating connector on the contact tip side and a joining piece fitting on the cable crimp contact on the contact rear end side are provided in parallel. thing,
An electrical connector characterized by the following: The insulation housing
A connector housing for accommodating the tip side of the crimp-compatible contact in the contact hole and fitting to the mating connector;
It is a cable housing that stores the rear end of the crimp-compatible contact in the internal space,
The connector housing is formed by integrally fitting a rear portion of the connector housing and a front portion of the cable housing,
The electrical connector according to claim 1, wherein:

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