JPH10177868A - Pressure contacting terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent slip off an electric wire out of a pressure contacting blade and enhance the reliability of electrical connection. SOLUTION: An electric wire pressing down part 25 is formed by cutting up in a facing state pressing down pieces 26, 26 from right sand left side plates 19, 19 of an electric wire connecting part 12, and when or after an electric wire D is pressure contacted, the pressing down pieces 26, 26 are bent at right angle and abutted each other, and cover upper part of the tip part of the electric wire D. Even if the electric wire D tends to slip off of a pressure contact part 21 by vibration or the like, move of the electric wire D is restricted with the electric wire pressing down part 25, and slip off is prevented. The contact of the electric wire D and the pressure contact part 21 is ensured, and the reliability of electrical connection is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press contact terminal.

[0002]

2. Description of the Related Art Hitherto, as this type of press contact terminal, the one shown in FIGS. 9 and 10 has been known. ID connector 1
Accommodates the press contact terminal 3 in the connector housing 2. The press contact terminal 3 has a fitting portion 3A with a mating terminal.
The pressure contact portions 4 are formed in a pair at the back of the base plate by cutting and raising from the bottom surface. When the electric wire D is pushed into the press contact portion 4, as shown in FIG. 10, a cut is made in the covering portion D2, and the core wire D1 comes into contact with the press contact portion 4, thereby achieving conduction.
The pressed wire D is pressed together with the covering portion D2 on a barrel portion 5 formed behind the press-contact portion 4 so as to be able to resist pulling. The part 4 is also prevented from falling off.

[0003]

However, in this type of press contact terminal, the distal end side of the electric wire D farther from the barrel portion 5 does not have the effect of the upward regulation by the barrel portion 5 and consequently the upward direction. Is prevented only by friction between the press contact portion 4 and the electric wire D. Therefore, when the vibration or the like is applied, or due to the return reaction force (see arrow A in FIG. 10) of the press contact portion 4 expanded by the press contact operation, the electric wire D
Has come out of the press contact portion 4 (see FIG. 9).

[0004] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a crimp terminal having high connection reliability of electric wires in a crimp portion.

[0005]

According to the first aspect of the present invention, a pair of press-contact portions for connecting to a leading end of an electric wire are arranged in a front and rear part, and A press contact terminal in which a press contact groove is formed in the press contact portion to allow the electric wire to be cut into the wire coating by being pushed in from above to enable conduction with the core wire, and the press contact terminal is arranged at a rear side of the press contact portion. A press-connecting terminal is characterized in that a pressing portion for regulating lifting of the front end portion of the electric wire is integrally formed at the front.

According to a second aspect of the present invention, in the first aspect, an insulation barrel is provided behind the rear pressure-contact portion to fasten and fix the electric wire from above the electric wire covering, A press contact terminal characterized in that the insulation barrel forms a wire fixing portion.

[0007]

According to the first aspect of the present invention, when the covered electric wire is pushed back and forth into a pair of press contact grooves, the covered portion is cut off, and the electric connection between the electric wire and the press contact terminal is established. Done. Here, since the pressing portion of the electric wire is provided in front of the pressure contact portion on the rear side, the front end portion of the electric wire does not float. For this reason, the lifting of the electric wire is restricted, and conduction reliability with respect to the electric wire can be obtained.

According to the second aspect, after the wire is pushed between the press contact portions, the wire and the press contact terminal are fixed by the wire fixing portion. Since the wire fixing portion is formed so as to resist the pulling of the wire, even if the wire is pulled backward after the wire is fixed to the press contact terminal, the press contact portion does not damage the wire. For this reason, the fixation of the electric wire and the press contact terminal is more reliably maintained. Further, since the insulation barrel is used as the wire fixing portion, the existing structure can be used to hold the wire, and the structure of the insulation displacement terminal can be modified to a minimum.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. The connector 30 includes a plurality of cavities 32 capable of accommodating the press-contact terminals 10 in a connector housing 31, and a terminal insertion port 33 of the cavity 32.
Is open at the rear end face of the connector housing 31.

FIG. 2 shows the press contact terminal 10 before the electric wire D is attached. The press contact terminal 10 is formed by sequentially cutting and bending a conductive metal plate, and roughly includes a terminal fitting portion 11 that is fitted and connected to a mating male terminal (not shown), and an electric wire. A wire connecting portion 12 in the form of a groove with an open top for pressing the end of D, and a wire fixing portion 1 which is fixed by caulking behind the pressed portion of the wire D
3 are sequentially formed from the front.

The terminal fitting portion 11 provided at the tip is formed in a rectangular cylindrical shape with a double ceiling surface, and has therein an elastic contact which can elastically contact a tab portion of a mating male terminal. Contact piece 1
5 are provided. Further, the lance 16 is formed by cutting and raising from the ceiling surface, and when the press contact terminal 10 is inserted into the cavity 32 of the connector housing 31,
When the lance 16 is hooked on the hooking portion in the cavity 32, the press contact terminal 10 can be locked in a retaining state. There is provided a stabilizer 17 for preventing insertion of the stabilizing member. The wire fixing portion 13 provided at the rear end forms an insulation barrel generally used for holding wires, and is formed at a position where a pair of left and right barrel pieces 13A, 13A are shifted from each other in the front-rear direction.

Two sets of front and rear press contact portions 2
1 is provided. As shown by a chain line in FIG. 2, each pressure contact portion 21 is formed by punching out a state in which a pressure contact groove 22 is provided in advance in a bottom plate of the electric wire connection portion 12, and is cut and raised from the bottom plate to form a mutual press contact portion 21. The intervals are arranged at a predetermined interval. As shown in FIG. 5, the width of the press contact groove 22 is set to a dimension slightly smaller than the diameter of the core wire D1 of the electric wire D.

As shown in FIG. 2, an electric wire holding portion 25 according to the present invention is connected to the front end of the electric wire connection portion 12 described above. The electric wire pressing portion 25 includes a pressing piece 26 extending from the upper edge of the front end side of the both side plates 19, 19 in the electric wire connecting portion 12, and after pressing the electric wire D, as shown in FIG. The holding piece 26 is bent at a right angle from the base end side, and a state in which the mutual tips are opposed to each other is obtained.

The present embodiment has the above structure,
Subsequently, the operation will be described. First, the electric wire D is attached to the press contact terminal 10. For this purpose, the electric wire D is press-fitted into the electric wire connection portion 12 in the direction indicated by the arrow in FIG. Then, as shown in FIG. 4, in the front and rear pressure contact portions 21, the electric wire D breaks the covering portion D2 at the side edge of each pressure contact groove 22, and the core wire D1 contacts the side edge of each pressure contact groove 22. Thus,
The electric wire D and the press contact terminal 10 are electrically connected at two front and rear press contact portions 21.

Here, when the above-mentioned pressure welding is completed or simultaneously with the pressure welding, the wire pressing portion 25 provided in front of the wire connection portion 12 and the wire fixing portion 13 provided behind are caulked. As shown in FIG. 5, the left and right holding pieces 26, 26 are bent at right angles from the base end side of the electric wire holding section 25, so that the leading ends thereof are opposed to each other. As a result, the distal end portion of the electric wire is pressed into
Even if the user tries to get out of the box, it is regulated by the holding piece 26 and does not get out.

In the electric wire fixing portion 13, as shown in FIG.
The barrel piece 13A is crimped around the electric wire D and fixed. Then, even if the wire D is pulled backward in a state where the press-contact terminal 10 is mounted on the connector housing 31, the contact state of the wire D at the wire connection portion 12 is not affected, and the contact state is maintained well. Then, the press contact terminal 10 to which the electric wire D is attached is inserted into the cavity 32 from the terminal insertion port 33 on the rear end face of the connector housing 31. At this time, since the wire pressing portion 25 is provided on the press contact terminal 10 itself, the wire D does not come out of the press contact portion 21 before the press contact terminal 10 is inserted into the connector housing 31, and a smooth assembling operation is performed. . Then, when the press contact terminal 10 is inserted to the proper position, the lance 16 is hooked on the engaging portion in the cavity 32, and the press contact terminal 10 is locked in a retaining state, and the assembling of the connector 10 is completed.

As described above, in the press contact terminal 10 of the present embodiment, the electric wire D does not come out of the press contact portion 21 even by vibration or the like, and a proper contact state with the core wire D1 is ensured, and the electric connection is established. Reliability is improved. Further, since the wire pressing portion 25 is provided on the press contact terminal 10 itself, there is no need to make a change on the connector housing side.
Existing connector housings can be used. Further, since the electric wire fixing portion 13 is formed as an insulation barrel, the electric wire can be held by using the existing structure, and the structure of the press contact terminal can be changed to a minimum necessary.

<Other Embodiments> The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) The electric wire pressing portion 25 of the present embodiment is provided on the front side of the front pressure contact portion 21.
1 and 21, and as shown in FIG.
, And in front of the front pressure contact portion 21.

(2) In the present embodiment, the wire holding pieces 26 are provided in pairs on the left and right sides of the wire connecting portion 12, but as shown in FIGS. A configuration in which only one side plate 19 is provided may be employed. (3) The present invention can be similarly applied to the male pressure contact terminal.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a connector according to an embodiment of the present invention.

FIG. 2 is a perspective view of a press contact terminal.

FIG. 3 is a perspective view of the press contact terminal after wire press contact.

FIG. 4 is a plan view thereof.

FIG. 5 is a sectional view taken along line VV in FIG. 3;

FIG. 6 is a perspective view showing a first modification;

FIG. 7 is a perspective view showing a second modification.

FIG. 8 is a perspective view showing a third modification.

FIG. 9 is a side sectional view of a conventional connector.

FIG. 10 is a front view of a press contact blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Press-contact terminal 11 ... Terminal fitting part 13 ... Wire fixing part 21 ... Press-contact part 22 ... Press-contact groove 25 ... Wire holding part D ... Wire D1 ... Core wire D2 ... Coating part

Claims (2)

[Claims] 1. A part of a pressure contact portion for connecting to a tip end portion of an electric wire is arranged in a pair in front and rear, and an electric wire is pushed into the press contact portion from above to cut into a wire covering to form a core wire. A press-contact terminal formed with a press-contact groove that allows conduction of the press-contact portion, in front of the press-contact portion disposed on the rear side,
A press-connecting terminal, wherein a pressing portion for regulating lifting of a tip end of an electric wire is integrally formed. 2. The insulation barrel according to claim 1, wherein an insulation barrel for fastening an electric wire from above the electric wire covering and fixing the electric wire is disposed behind the rear pressure contact portion. A press contact terminal characterized by forming a wire fixing portion.