JPH0455420Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Summary] This connector is mainly used to electrically connect a flat cable and a printed circuit board, and the purpose is to reduce the height without increasing the stiffness of the contact part. A fixing part press-fitted into the insulator, a substantially U-shaped cable pressure contact part with one end exposed outside the insulator, and the other end extending from a cutout of the fixing part,
A pressure-welding side connector, which has a leaf spring shape and is coaxial with the pressure-welding part, and has a contact part with a mating connector housed in a cavity inside the insulator; a contact portion that contacts the contact portion of the pressure welding side connector, a terminal portion whose other end is at a different axial position from the axis of the contact portion and is exposed to the outside of the insulator, and an intermediate portion between the contact and the terminal portion that is axially The terminal side connector is configured to be connected to a fixed part that is press-fitted into the insulator and a terminal-side connector.

[Industrial Application Field] This invention mainly relates to a two-piece type connector that electrically connects a flat cable and a printed circuit board.

Normally, a flat cable is press-connected to the contacts of a connector, but the contacts to which the flat cable is press-connected are arranged in a staggered manner because the pitch between adjacent wires of the flat cable is short. On the other hand, since the terminal insertion portions of the printed circuit board are arranged in multiple rows at the same position, it is necessary to perform pitch conversion between the pressure contact side and the terminal side in this connector.

[Conventional technology]

FIG. 5 shows an external view of a conventional flat cable connector. Reference numeral 17 denotes a pressure-welding side connector, in which the flat cable 13 is fitted with a cover 16 to be pressure-welded to the contact. Reference numeral 18 denotes a terminal side connector into which a plurality of terminals 14 (some of which are omitted) are inserted into a printed circuit board (not shown). The flat cable 13 and the printed circuit board are electrically connected by connecting the pressure contact side connector 17 and the terminal side connector 18.

FIG. 6 shows the contacts in the pressure welding side connector 17.

This contact has a U-shaped pressure contact part 11a that pressure contacts the flat cable 13, a fixed part 11b that is press-fitted into the insulator, and extends downward from the fixed part 11b. The contact portion 11c extends upward in a different manner. In this way, the conventional structure is such that the pitch is changed by the contacts of the pressure-welding side connector 17.

FIG. 7 shows a cross-sectional view of the connection state between the pressure contact side connector 17 and the terminal side connector 18.

As explained with reference to FIG. 6, the pressure contact 11 is formed so that the pressure contact portion 11a and the contact portion 11c have different axes, and pitch conversion is performed here. Therefore, the contact 14 on the terminal side has a straight shape. The elastic force is generated by the elastic force of the contact portion of the contact side contact of the pressure contact side and the terminal side contact. In addition, 12 is an insulator on the pressure welding side,
15 is an insulator on the terminal side.

[The problem that the idea attempts to solve]

In conventional connectors, the pitch conversion is performed at the contact part of the pressure contact, and because the structure extends downward from the fixed part and is folded back upward, this part inevitably becomes longer in the vertical direction. As a result, the overall height of the connector was high.

In order to solve this problem, it may be possible to shorten the length of the contact part, but this increases the stiffness of the contact part, resulting in a large change in contact force with a small displacement, and lowering reliability.

It is also conceivable to provide a contact portion extending directly downward from the fixed portion, but due to pitch conversion, the fixed portion becomes larger in the axial direction and the width between adjacent contacts becomes shorter. As a result, the thickness of the insulator between them becomes thinner, and the fixing force of the contact that presses the cable becomes weaker, so this structure cannot be adopted either.

The present invention aims to solve the above-mentioned problems and to provide a connector which can realize a low profile without deteriorating the fixing force of the contacts on the pressure welding side and the reliability of the contact portion.

[Means to solve the problem]

In order to solve the above problems, the present invention consists of an insulator and a plurality of contacts that are press-fitted into the insulator. Cable pressure welding part that is exposed to the outside and connects to the cable,
The other end has an elastic leaf spring shape extending from a cutout of the fixing part and is coaxial with the pressure contact part;
A pressure welding side connector having a contact portion with a mating connector housed in a cavity in the insulator, an insulator, and a plurality of contacts press-fitted into the insulator, and the insulator The contact has a hollow part into which an insulator is inserted, and the contact has an elastic leaf spring-like contact part at one end that is accommodated in the hollow part in the insulator and comes into contact with the contact part when the pressure-welding side connector is inserted. , a terminal having a terminal portion at the other end that is located at a different axial position from the axis of the contact portion and exposed to the outside of the insulator, and a fixed portion that converts the axis and is press-fitted into the insulator at an intermediate portion between the contact portion and the terminal portion. To provide a cable connector characterized by comprising a side connector.

[Effect]

According to the above means, first, the pressure-connecting side connector is formed such that the contact portion of the contact extends directly downward from the fixed portion. Further, the fixing part has a notch, and the contact part extends from the notch, so that the contact part protrudes from above. Therefore, the length of the contact portion in the vertical direction is shortened.

Furthermore, since leaf spring material is also used for the contact portions of the contacts of the terminal-side connector, the stiffness does not increase even if each contact portion is shorter than conventional ones.

Pitch conversion is performed by the contacts of the terminal-side connector, and although the fixing portion becomes larger in the width direction, there is no problem even if the fixing force is weaker than that of the contacts on the pressure-connecting side that press-connect the cable.

〔Example〕

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

FIG. 1 is a cross-sectional perspective view of the pressure-connecting connector in a state in which a flat cable is pressure-connected.

In Fig. 1, 1 is a contact, 2 is an insulator,
3 is a flat cable that is pressed into contact with the contact 1. Actually, the flat cable is connected to contact 1.
By fitting the upper insulating cover placed above the flat cable to the insulator 2, the contact 1 breaks through the sheathing of the flat cable and comes into contact with the internal electric wire, but the insulating cover is omitted here.

The contact 1 includes a press-contacting part 1a exposed above the insulator 2, a fixing part 1b having a protruding part and press-fitted into the insulator 2, and a leaf-spring-shaped mating part 1b located in the hollow part of the insulator 2. (Terminal side) It consists of a connector and a contact portion 1c that makes contact with its elastic force.

Such contacts 1 are fixed to an insulator 2 in a staggered manner with a pitch of 1.27 mm.

FIG. 2 is a cross-sectional perspective view of the terminal side connector.
4 is a contact, and 5 is an insulator.

The contacts 4 are located in the cavity of the insulator 5, and the contacts 1 are arranged in a staggered manner as shown in FIG.
leaf spring-like contact parts 4a which are also arranged in a staggered manner to make contact with the contact parts 1c of the insulator 5; The terminal portion 4c is bent and exposed downward. This contact 4 is pitch-converted at the fixed portion, so that the terminal portions 4c are aligned with the contact portions 4a which are arranged in a staggered manner without shifting the upper and lower rows.

In this embodiment, since the connector is a right angle type connector, the terminal portion 4c has a bent shape, but the same applies to a straight type connector.

FIG. 3 shows a cross-sectional perspective view of the connection state between the pressure-connecting side connector and the terminal side connector.

The contact parts are connected to each other by inserting the protrusion of the insulator 2 of the pressure-connecting connector into the recess of the insulator 5 of the terminal connector. At this time, the contact portion 1c,
4a are in contact with each other with elastic force. Therefore, even if the length of the contact part is shorter, the stiffness does not become higher than that of a conventional pressure-welding side connector in which contact is made by the elastic force of the contact part.

FIGS. 4a and 4b are cross-sectional views of the state shown in FIG. 3 viewed from the direction of arrow A and the direction of arrow B, and also show the insulating cover 6.

The connection state is as described in FIG. 3, and as can be seen from this figure, the fixed portion 1b of the contact 1 is provided with a notch portion 1d, from which the contact portion 1c extends. Therefore, the contact 1 can be formed as low as the height c of the notch 1d. Furthermore, the fixed portion 4b of the contact 4, which was unclear in FIG. 2, is also clearly shown here, and it can be clearly seen that the pitch has been converted.

In Fig. 4a, the distance D between adjacent contacts 1 is
The pitch is 2.54 mm, and contact 1 is installed at a position shifted in the depth direction of the page between these two. The pitch change in the fixed part 4b of the contact 4 corresponding to the contact 1' (not shown) is performed so that it is shifted to the left side in the drawing, so that the contact part 4c' is overlapped with the contact part 4c of the contact 4 on the left side shown in the drawing. exposed.

According to this embodiment, the height of the conventional case, which was 13.5 mm when the pressure welding side and the terminal side are connected, becomes 8.6 mm, resulting in a significant reduction in height.

〔effect〕

According to the cable connector of the present invention, the stiffness of the contact part is increased, and reliability is not deteriorated.
It becomes possible to achieve a significant reduction in height.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional perspective view of the pressure welding side connector of the present invention, Fig. 2 is a cross-sectional perspective view of the terminal side connector of the present invention, and Fig. 3 is a state in which the connector of Fig. 1 and the connector of Fig. 2 are connected. 4a and 4b are sectional views of FIG. 3 viewed from directions A and B, FIG. 5 is an external view of a conventional flat cable connector, and FIG. 6 is a conventional pressure welding side connector. FIG. 7 is a cross-sectional view of a conventional pressure welding side connector and a terminal side connector in a connected state. Explanation of symbols, 1... Press contact, 2...
Pressure welding side insulator, 3...Flat cable, 4...
Terminal side contact, 5... Terminal side insulator, 6...
insulation cover.

Claims (1)

[Claims for Utility Model Registration] Consisting of an insulator 2 and a plurality of contacts 1 press-fitted into the insulator 2, the contacts 1
However, in the middle part there is a fixing part 1 that is press-fitted into the insulator 2.
b. A cable press-contact part 1a that is exposed outside the insulator and connects to the cable at one end, and a leaf spring-like elastic body extending from a cutout part 1d of the fixing part 1b at the other end and located coaxially with the press-contact part 1a. a press-contact side connector which is located in the insulator and has a contact portion 1c with a mating connector accommodated in a cavity inside the insulator; an insulator 5; and a plurality of contacts 4 press-fitted into the insulator 5; 5 has a cavity portion into which the insulator 2 of the pressure welding side connector is inserted;
The contact 4 has an elastic plate spring-like contact portion 4a that is accommodated in the cavity in the insulator 5 at one end and comes into contact with the contact portion 1c when the pressure-connecting connector is inserted, and a contact portion 4a that has an elastic shape and contacts at the other end. A terminal having a terminal part 4c which is located at an axial position different from the axis of the part 4a and exposed to the outside of the insulator, and a fixed part 4b which is press-fitted into the insulator 5 with the axis changed to an intermediate part between the contact part 4a and the terminal part 4c. A cable connector comprising a side connector.