JPH11214055A - Contact for pressure-contact type connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably connect a flat cable having a narrow pitch, while improving the mechanical strength by folding a terminal part at both sides thereof so as to have a U-shaped cross section through a groove for connection of a cable by pressing in. SOLUTION: A contact is formed of two kinds of contacts 2X, 2Y, and each contact part 21 and each terminal part 22 are connected to each other by contact pieces 23a , 23b so that one surface and the other surface are at a right angle. The terminal part 22 is folded at both ends thereof so as to have a U-shaped cross section via a groove for connection of a raw wire of a flat cable by pressure-contact. Contact parts 21 of the two kinds of contacts 2X, 2Y are arranged zigzag in a contact housing, and the two contacts are installed in a condition such that U-shaped opening thereof are directed opposite to each other. These contacts 2X, 2Y form a first pair, and a second pair is arranged with a displacement from the first pair by one pitch of the flat cable so as to form a connector. With this structure, a flat cable having a narrow pitch can be stably connected through pressure-contact.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact of a press-connecting connector which can press-connect a plurality of cables, for example, flat cables at high density.

[0002]

2. Description of the Related Art The present applicant has previously proposed a press-connecting connector as shown in FIGS. 4 to 7 as this type of press-connecting connector (Japanese Patent Publication No. 6-7498).

In FIG. 1, reference numeral 1 denotes a number of contacts 2
(2x, 2y) is a contact housing to be mounted,
Contact 2 (2x, 2y) is 4, as clearly shown in FIGS. 6 and 7, the contact portion 2 ₁ and the terminal unit 2 ₂ is one side by a connecting piece 2 _3a, 2 _3b of long and short two has a structure that is coupled to be on the other side and perpendicular, the contact portion 2 ₁ 2
Arranged in rows and mounted on the contact housing 1,
Contacts 2 of contacts 2 (2x, 2y) arranged in rows
_1, 2 the terminal unit 2 _2, 2 ₂ leading to ₁ is exposed from the lower end portion of the contact housing 1 (upper in the figure), as clearly shown in FIG. 5, is and staggered each two rows the first set parallel to each other and the terminal portions 2 ₂ (17), is made from the terminal unit 2 ₂ which of the second set (18). The terminal 2
_As is well known, a groove 2 is formed, for example, to which a flat cable strand can be connected by pressure contact.

[0004] The first set (17) arrangement pitch l ₁ of the terminal portion 2 of the _second set (18) is twice the pitch l ₂ of the strand 4A of the flat cable 4 as shown in FIG. 5 ie 2 It has a length corresponding to the pitch, and has a terminal portion 22 and a _second portion of the first set (17).
Set (18) terminal portion 2 ₂ of one another, are arranged offset one pitch l ₂ of the wire 4A. Reference numeral 5 denotes a first cable housing as a cable support portion, which has the same length and width as the contact housing 1 and has a height most of which is a terminal portion 2 ₂ projecting from the lower end surface of the contact housing 1. Formed slightly longer than the length of
The terminal portions 2 ₂ of the first set (17) and the second set (18)
Groove 7 which may each intersect the insertion hole 6 and therewith inserting the fitting the press-fit connection to the terminal portions 2 ₂ of the wire 4A
(7A, 7B) are formed. The insertion hole 6 penetrates the upper and lower end faces of the first cable housing 5, grooves 7A is a groove for exposing the terminal portions 2 ₂ of the first set (17), the front half portion of the first cable housing 5, grooves 7B Is the second set (1
In a groove for exposing the terminal portions 2 ₂ 8), a plurality of grooves 7A and the groove in the second half of the depth respectively predetermined depth for example the groove bottom of the terminal unit 2 ₂ from the top surface to the rear half portion is exposed, and the front half portion 7B are staggered, and the first half groove 7A and the second half partition wall 19B (the second half adjacent grooves 7B and 7B) are aligned.
), The groove 7B in the rear half and the partition 19A in the front half.
The step surfaces between the adjacent grooves (between the adjacent grooves 7A and 7A in the first half) are formed on the inclined surface 8, and the inclined surface 8 and the upper surface 9 of the partition wall 19B and the upper surface 9 of the partition wall 19A are edged. In order to form one blade for cutting between the wires 4A of the flat cable 4, it is formed in an inwardly curved arc surface. Reference numeral 10 denotes a second cable housing serving as a cable pressing portion, which has a plurality of projections 11A and 11B fitted on the lower surfaces facing the upper surface of the first cable housing 5 in the grooves 7A and 7B of the first cable housing 5. The protrusions 11A and 11B are formed with fitting grooves 12A and 12B into which the terminal portions 22 are fitted. The protrusion 11
A and 11B are shifted from each other by one pitch of the strand 4A,
Each of the wires 4A is arranged at a pitch of two pitches. In addition, end surfaces 13A and 13A of projections 11A and 11B
B has an arc surface curved inward to form another blade at the end edge for cutting the wire 4A between the flat cables 4.

[0005] As shown in FIG. 4, the lower surface of the contact housing 1 (upper in the figure), stacking a first cable housing 5 is inserted through the terminal portion 2 _second contact 2 which projects from the lower surface to the insertion hole 6, After the flat cable 4 is placed on the first cable housing 5 so that the wires 4A fit into the grooves 7A and 7B, the wires 4A and the projections 11 are placed thereon.
A and the second cable housing 10
When a force is applied downward, the first cable housing 5 and the second cable housing 10 cut between the strands 4A of the flat cable 4, and when the second cable housing 10 is further pushed down, FIGS. as shown in 7, grooves 7A and 7B of the wire 4A is wire 4A except press-fit connecting portion while being press-fit connection to the terminal portions 2 _{and second} contacts 2 first cable housing 5, the inclined surface 8 and the partition wall 1
It is formed curved along the shape of the upper surface 9A or 19B.

Reference numeral 14 denotes a stopper for fixing the contact housing 1 and the first cable housing 5 by driving the first cable housing 5 into the contact housing 1, and reference numeral 15 denotes a protrusion 16 of the second cable housing 10. The second cable housing 1
0 is a concave portion of the first cable housing 5 for guiding the first cable housing 5.

[0007]

The press contact type connector can connect a flat cable having a narrow pitch, for example, 0.635 mm pitch, to a contact with a strong press contact force, and causes insulation breakdown between adjacent terminal portions. It has the characteristic that it does not occur. However, recently, flat cables with a smaller pitch have emerged. In order to apply to a flat cable having a smaller pitch as described above, instead of the contact, for example, FIG.
As shown in, one using a contact forming a terminal portion 2 ₂ in narrow, upon cable connection, deformation and insufficient mechanical strength of the terminal portion, stable contact between the cable wires and the terminal portion Is not obtained.

The present invention has been made in view of the above-mentioned inconveniences, and it is an object of the present invention to provide a contact of a press-connecting connector which can stably press-connect a flat cable having a narrower pitch than that proposed previously.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a contact of a press-contact type connector in which a contact portion and a terminal portion are connected by a connecting piece, wherein the terminal portion press-fits a cable. It is characterized in that both sides are each bent through a connecting groove to form a U-shaped cross section.

Since the contact has a terminal portion formed in a U-shaped cross section, the contact pitch is narrower and the mechanical strength is improved as compared with the previously proposed one.
It is possible to stably press-connect a narrow-pitch flat cable.

[0011]

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an example of a contact of a press-contact type connector according to the present invention.

[0013] contacts 2, as shown in FIG. 1 (A) (B), 2 kinds of contact 2X, consists 2Y, by respective contact portion 2 ₁ and the terminal unit 2 ₂ coupling piece 2 _3a, 2 _3b The connecting piece _23a of the contact 2X is formed by connecting one surface thereof so as to be perpendicular to the other surface.
Longer than connecting piece 2 _3b of the contact 2Y. The above configuration is not particularly different from those proposed by the applicant earlier, while the terminal part 2 ₂ of the contact is formed in a flat plate shape, the terminal portion 2 _second contact 2 of the present invention
Is formed to have a U-shaped cross section by bending both sides via a groove for press-connecting the strands of the flat cable.

FIGS. 2 and 3 show the two types of contacts 2.
1 shows a press-fit type connector using X, 2Y.

[0015] the contact housing 1, the two contact 2X, contact portion 2 ₁ of the 2Y is mounted in two rows are alternately arranged, is mounted on the two rows contact portions 2 _1, 2 connected to the _first terminal part 2 _2, 2 ₂ are exposed from the lower end portion of the contact housing 1 (upper in the figure), a terminal portion 2 ₂ of the first pair parallel to each other are and staggered respectively two rows (17), consists terminal unit 2 ₂ which of the second set (18). Contact 2 of first set (17) and second set (18)
Are both mounted terminal unit 2 ₂ and the terminal portion 2 ₂ inside the contact 2 outside of the contact 2 is back-to-back with each other (the U-shaped opening opposite directions to orient each other) as.

[0016] first cable housing 5 as a cable support portion, said first set (17) and the second set (18) insertion hole 6 of the cross-section U-shaped for inserting the respective terminal portions 2 ₂ is formed ing. The other configurations of the connector are the same as those shown in FIGS. The insertion hole may be a square hole.

As shown in FIG. 2, the lower surface of the contact housing 1 (upper in the figure), a contact 2X projecting from the lower surface, a first cable housing 5 is inserted through the terminal portion 2 _second 2Y into the insertion hole 6 After stacking and placing the flat cable 4 on the first cable housing 5 so that the wires 4A fit into the grooves 7A and 7B, the wires 4A and the projections 11A and 11B of the second cable housing 10 are placed thereon. When the second cable housing 10 is placed so that the first cable housing 10 and the second cable housing 10
The cable housing 10 cuts between the wires 4A of the flat cable 4, and furthermore, the second cable housing 1
Depressing 0, in the same manner as shown in FIGS. 6 and 7, the wire 4A is wire 4A except press-fit connecting portion while being press-fit connection to the terminal portion 2 _second contact 2 of the first cable housing 5 Grooves 7A and 7B, inclined surface 8 and partition wall 19
A or 19B is curved along the shape of the upper surface.

[0018] Incidentally, the contact 2X, 2Y, the although the terminal portions 2 ₂ surface and the contact portion 2 ₁ of the surface is formed at right angles to each other, may be one formed in parallel with.

[0019]

The present invention has an effect that a flat cable having a narrower pitch than that previously proposed can be connected stably by pressure welding.

[Brief description of the drawings]

FIGS. 1A and 1B are perspective views of two types of contacts of a press-contact type connector according to the present invention.

FIG. 2 is an exploded perspective view of a press-contact type connector using the two types of contacts.

FIG. 3 is a plan view of the insulation displacement connector to which a flat cable is connected.

FIG. 4 is an exploded perspective view of the previously proposed press-connecting connector.

5 is a plan view of the press-connecting connector shown in FIG. 4 to which a flat cable is connected.

FIG. 6 is a sectional view taken along line AA of FIG. 5;

FIG. 7 is a sectional view taken along line BB of FIG. 5;

FIG. 8 is a perspective view of a main part of an example of a contact of a conventional press-connecting connector to which a narrow-pitch flat cable can be connected.

[Explanation of symbols]

2 (2X, 2Y) ... Contacts 2 ₁ ... contact portion 2 ₂ ... terminal unit 2 _3a, 2 _3b ... connecting portion

Claims (1)

[Claims] 1. A contact of a press-contact type connector in which a contact portion and a terminal portion are connected by a connecting piece, wherein the terminal portion is bent at both sides through a groove for press-fitting a cable and has a U-shaped cross section. A contact of a press-connecting connector characterized by being formed.