JPS6048876B2 - flat cable connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flexible flat cable connector having a plurality of parallel conductors.

In recent years, the parallel conductor pitch of flat cables has become smaller and smaller, and this has led to higher density and miniaturization of the press-fit terminals of connectors for the purpose of press-fit connection, and high-precision press-fit connections. is now required. As a leading idea, the applicant has already provided a flat cable connector with an alignment block that corrects and aligns the posture of each press-fit terminal, and guides press-fitting into each flat cable conductor, thereby ensuring a secure press-fit connection. We have submitted a proposal to do so.

The present invention achieves the purpose of arranging fine-pitch press-fit terminals during press-fitting in this application, and is further improved to cope with miniaturization and higher density of the press-fit terminals, and further improves the press-fit connection of flat cable connectors. The aim is to make it highly reliable and also to simplify press-fit connection workability. The drawing shows an embodiment of a flat cable connector that is embodied to achieve the above object.

As shown in the figure, this flat cable connector consists of a terminal holding block B comprising a large number of press-fit terminals 5 planted on an insulating base 1, and a cover block A for press-fitting the flat cable 4. FIG. 1 shows an example of a base body 1 having two rows of press-fit terminal insertion holes 6, and the press-fit terminals 5 are partially omitted from the illustration. The cover block A is composed of a first plate 2 made of an insulating material and a second plate 3 disposed on the inner surface of the first plate so as to face the first plate.

The first and second plates 2 and 3 have a large number of press-fit terminal insertion holes 7 and 8 that correspond to each other and correspond to the press-fit terminals 5, respectively. Each of the large number of conductor press-fit terminals 5 planted on the base 1 is inserted into the conductor press-fit terminal insertion hole 8 of the second plate 3 and aligned in the hole, while the conductor press-fit terminal of the first plate 2 is inserted. inserted into the hole 7 and the insertion hole 8 of the second plate 3
In the process of being inserted into the insertion hole 7 of the first plate 2, the flat cable 4 is pierced through the sheathing of the flat cable 4 interposed between the plates 2 and 3, and each conductor 4' is press-fitted into each press-fit terminal 5. It is configured.

The base body 1 and the second plate 3 are located at both ends thereof. , they are fitted into each other to form the structure 10.

This fitting structure allows the second plate 3 to move a certain amount in the axial direction of the insertion holes 7 and 8. Under this movable fit, the press-fit terminal insertion hole 8 of the second plate 3 and the press-fit terminal Z5 planted on the base body 1 are inserted. In the above fitting, the tip of the press-fit terminal 5 is connected to the second plate 3.
When the second terminal is inserted into the press-fit terminal insertion hole 8 and enclosed,
The plate 3 is prevented from being removed, and the tip end of the terminal and the inner wall of the insertion hole 8 of the second plate 3 come into frictional contact with each other due to their elasticity, thereby maintaining the above-mentioned enclosed state.

The drawings show a specific example of the above-mentioned fitting structure. As shown in the figure, engaging legs 12 extending in the hole axis direction are integrally provided at both ends of the second plate 3, and the engaging legs 12 are slidably engaged with moving guides 11 provided symmetrically at both ends of the base body 1. The structure allows the second plate 3 to move in the direction of the hole axis according to the sliding engagement with the moving guide 11, and at the upper limit of the movement stroke, the engaging leg 12 meets the locking portion provided at its free end. 12a is engaged with the lower surface of the guide forming wall 13 to prevent the second plate 3 from detaching.

During the movement stroke, the inserted state of the press-fit terminal insertion hole 8 of the second plate 3 and the press-fit terminal 5 of the base 1 is maintained, and the press-fit terminal is inserted at the upper limit locking position of the second plate 3. The tip of the press-fit terminal 5 is contained within the hole 8 . The engaging leg 12 is integrally molded with the second plate 3 and has appropriate bending elasticity, and is elastically displaced during the insertion process into the moving guide 11 due to the bending elasticity, and the locking portion 12a guides the locking portion 12a. It restores itself to the position released from the forming wall 13 and engages with the downwardly directed step 13' of said wall 13. Although the figure shows a case where the lower surface of the wall 13 is used as an engagement step, the step may be formed on the side surface of the wall 13. The moving guide 11 is shown as a vertical slot, and guide forming walls 13 forming the slot are protruded in the middle and on the left and right sides thereof. The left and right guide forming walls 13a also function as engagement walls for the first plate 2. At both ends of the first plate 2, engagement legs 14 that fit into the guide forming walls 13a are symmetrically provided vertically. The engagement leg 14 is integrally molded with the first plate 2 and has appropriate flexibility. The engaging leg 14 is connected to the guide forming wall 1 by an engaging portion 14a provided at its lower end.
It engages with the downward step 13'' of the second plate 3a to prevent it from coming off upward in the figure, and maintains the facing state with the upper surface of the second plate 3.

The engaging leg 14 is engaged with the stepped portion 13'' and is fitted into a moving guide 11' formed on the outer surface of the guide forming wall 13a, and while slidingly engaged with the guide 11', the engaging leg 14 is engaged with the step portion 13''. The second plate 3 is moved in the same direction as the second plate 3 is moved downward (in the direction overlapping the base 1), and the press-fit terminal 5 is moved in the same direction as the second plate 3. It is inserted into the insertion hole 7 of the first plate 2 through the insertion hole 8. In this process, the sheath of the flat cable 4 interposed between the first and second plates 2 and 3 is pierced by the tip of each press-fit terminal 5. The engaging leg 14 is shaped like a rectangular frame and is elastically expanded by the guide forming wall 13, and the guide forming wall 13 is fitted inside the engaging leg 14 to achieve the locking. Although the structure obtained above has been described, it is also possible to have the same structure as the engaging leg 12 of the second plate I/3, and it is also possible to make the engaging leg 12 have the same frame shape as the engaging leg 14 of the first plate 2. be.

The same effect as described above can also be obtained by providing the engaging legs 12 on the base 1 side and the guide forming wall 13 on the second plate 3 side. As described above, the parallel pitch of the conductors 4' of the flat cable 4 is becoming smaller and thinner, and in response to this, the press-fit terminals 5 are also becoming more dense and finer.

These press-fit terminals 5 are easily deformed or displaced by a slight external force,
If these deformations or displacements occur even slightly, a normal press-fit connection with the conductor 4' cannot be obtained, resulting in a poor connection. The present invention achieves the purpose of aligning the press-fit terminals 5 during press-fitting work, while effectively preventing the above-mentioned deformation, displacement, etc., making the press-fitting connection using a flat cable connector more reliable, and improving the press-fitting connection workability. Achieve simplification of

Deformation and displacement of the press-fit terminal 5 may occur at many times when it comes into contact with the outside, such as during packaging, transportation, or at a press-fit site.

The second plate 3 maintains the alignment of the press-fit terminals 5 at all of these opportunities, effectively preventing deformation and displacement, and at the same time preparing the press-fit terminals 5 in advance. While the second plate 3 itself is prevented from coming off by fitting into the base body 1 by the engagement legs 12, the terminals can be immediately used for press-fitting work while the terminals are held by the second plate 3. Inclination of the second plate 3 itself is well prevented by the above-mentioned fitting structure and the frictional contact between the press-fit terminal 5 and the inner wall of the insertion hole 8. In addition, the collective strength of the large number of press-fit terminals effectively prevents displacement of the second plate 3. Therefore, relative displacement of the press-fit terminal 5 is also prevented. The press-fit terminal 5 is previously enclosed in the insertion hole 8 of the second plate 3, and can be formed in a complete press-fit position during the process of being pushed out from the insertion hole 8 of the second plate 3. Further, the base body 1 and the second plate 3 can be treated as one component,
This prevents parts from scattering and is advantageous for packaging, etc. It becomes more effective by placing the first plate 2 under a similar fit. The above-mentioned fitting structure is shown as a suitable example, and other known fitting structures can be applied as long as they achieve the same purpose.

Furthermore, the engagement leg 12 can be locked by tightly fitting into the guide 11 and can be prevented from coming off.

[Brief explanation of drawings]

The drawings illustrate embodiments of the invention. Figure 1 is an exploded perspective view of the flat cable press-fit connector, Figure 2 is a perspective view of the same showing how the second plate and base fit together, and Figure 3 shows how the first and second plates fit together with the base. FIG. 4 is a front view of the same. A.
...Terminal holding block, B...Cover block, 1
... Base, 2 ... First plate, 3 ... Second
Plate, 4... Flat cable, 5... Press-fit terminal, 7, 8... Press-fit terminal insertion hole, 10... Fitting structure, 11... Movement guide, 12... Engaging leg, 12a... Engaging portion, 13... Guide forming wall, 13
...Locking step.

Claims (1)

[Claims] 1. Consists of a terminal holding block made of a large number of conductor press-fit terminals planted on an insulating base, and a cover block made of an insulating material, and the cover block includes a first plate and a first plate. It consists of a second plate made of an insulating material facing each other on the inner surface side, and both plates are provided with a large number of conductor press-fit terminal insertion holes bored at corresponding positions, and a large number of conductor press-fit terminals planted in the base body. Each of the terminals is inserted into the conductor press-fit terminal insertion hole of the second plate, and while aligned in the hole, the terminal is inserted into the conductor press-fit terminal insertion hole of the first plate, and during the insertion process, the terminals are inserted between the two plates. In a flat cable connector configured such that a press-fit terminal penetrates the sheath of a flat cable and each conductor is press-fit into each press-fit terminal, the second plate and the base body are configured to move a fixed amount in the direction of the axis of the hole at both ends thereof. The flat cable has a fitting structure that allows the fitting, and is configured such that the press-fit terminal inserted into the press-fit terminal insertion hole of the second plate and the press-fit terminal planted in the base body are inserted while the two are movably fitted. connector. 2. In the invention described in item 1, the fitting structure allows a fixed amount of movement in the direction of the hole axis, and the engagement legs extending in the direction of the hole axis are integrally provided at both ends of one of the second plate or the base body, The engaging leg is slidably fitted to a moving guide provided at the other end, and as the moving guide slides, the second plate is allowed to move in the axial direction of the hole, and at the upper limit of the moving stroke, the second plate is allowed to move in the direction of the hole axis. The engaging leg is configured to engage with the guide forming wall to prevent the second plate from detaching, and the inserted state of the press-fit terminal insertion hole of the second plate and the press-fit terminal of the base body is maintained during the movement stroke. . A flat cable connector characterized in that the tip of the press-fit terminal is contained in the press-fit terminal insertion hole at the upper limit locking position of the second plate. 3. The flat cable connector according to item 2, wherein the tip of the press-fit terminal of the base body is contained in frictional contact with the inner wall of the press-fit terminal insertion hole of the second plate. 4. The flat cable connector according to the invention described in item 2, wherein the engaging legs are flexible and can be engaged and detached by themselves.