JPH088526Y2 - Connection structure of flat cable and connector - Google Patents

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to a structure for reliably joining a flat cable and a connector at a connection portion between them.

[Prior art]

A configuration of a conventional flat cable and a connector to which the flat cable is electrically connected is shown in FIGS. 13 to 23. Of these, FIGS. 13 to 15 show flat cables, respectively. FIG. 13 is a plan view thereof, FIG. 14 is a front view, and FIG. 15 is a right side view. Further, FIGS. 16 to 18 show connectors respectively, FIG. 16 is a plan view thereof, FIG. 17 is a front view, and FIG.
FIG. 17 is a sectional view taken along line XVIII-XVIII in FIG. As shown in the figure, this flat cable 50 includes three core wires 51 (generally made of copper or copper alloy) formed in a thin strip shape, and a resin covering material 52 adhered around the core wires 51.
It consists of and. The flat cable 50 is formed without the covering material 52 only at its end, or is formed as shown by removing the covering material 52 at the end portion before joining with the connector. On the other hand, the connector 53 is composed of a resin-molded holding body 55 and a terminal 54 also made of copper or copper alloy. This can be insert molding,
Alternatively, after holding body 55 is molded separately,
Manufactured by press fitting 54. The same number of terminals 54 as the core wires 51 of the flat cable 50 are arranged at the same pitch. As shown in the figure, the board width is generally the core wire.
Substantially the same as 51, the plate thickness is formed thicker than the core wire 51. 19 to 22 show flat cable 50 and connector 53
FIG. 19 is a plan view, FIG. 20 is a front view, FIG. 21 is a sectional view taken along the line XXI-XXI of FIG. 20, and FIG.
FIG. XXII-XXII line sectional view of FIG. In the case of the above configuration, spot welding, ultrasonic welding, laser welding, soldering, or the like is used to form the joint 56 between the core wire 51 and the terminal 54. By the way, since the flat cable 50 is long and flexible, as shown in FIG. 23, the flat cable 50 may be joined to the connector 53 in a state where the core is displaced. Also, after joining,
Inspections are being performed to see if any misalignment has occurred. Therefore, in order to avoid such a situation, a dedicated jig is conventionally used to align both members.

[Problems to be solved by the device]

However, since it is necessary to use such a jig, the number of steps required for attaching / removing the parts is increased, and the movement of the joining tool is restricted by the jig, which makes the joining work difficult. Separately from this, when the flat cable 50 and the connector 53 are joined and the cable 50 moves, an unreasonable force is applied in the vicinity of the joining portion 56, and the flatness of the plate is thinner than that of the connector terminal 54. The core wire 51 of the cable 50 may break. In addition, it is necessary to perform an extra inspection after the joining to see whether or not the misalignment of the joining portion 56 as shown in FIG. 23 has occurred. All such problems result from the flat cable 50 and the connector 53 not being positioned by themselves. Therefore, the technical problem to be solved by the present invention is to configure the flat cable and the connector so that they can be positioned, so that they can be easily joined without using a dedicated jig. Improves the reliability of the joint by preventing the core wire from breaking even if the cable moves after the joint, and also eliminates misalignment of the joint to simplify the inspection after the joint (reduce the inspection man-hours). It is to plan.

[Means, actions and effects for solving the problems]

In order to solve the above technical problems, the flat cable and the connector according to the present invention are configured to have the following features as their connection structure. That is, the holding body of the connector is formed with a positioning recess into which the tip of the core wire of the flat cable is fitted, and a clip portion which sandwiches the covering material at the lateral position of the core wire at the end of the covering material of the flat cable. With this configuration, when the flat cable core wire and the connector terminal are overlapped and joined, the tip of the flat cable core wire fits into the positioning recess, and at the same time, the end of the flat cable covering material is clipped at the side position of the core wire. Sandwiched between parts. Therefore, it is possible to easily position the end of the coating material of the flat cable with respect to the holder of the connector without using a jig, and at the same time, even if the flat cable moves after the joining, all the force is applied to the joining portion. Since this can be prevented, it is possible to achieve the ease and certainty of joining the flat cable and the connector. Further, the connection structure of the flat cable and the connector may be configured as follows. That is, the holding body of the connector may be formed with a wrapping portion that wraps around the end portion of the covering material of the flat cable in front of the terminal protruding from the holding body. In this configuration, the end portion of the covering material of the flat cable is wrapped by the wrapping portion formed in the holding body of the connector and positioned, so that the flat cable and the connector can be easily joined as in the above configuration. Both reliability and reliability can be achieved. Further, in any of the above configurations, since the misalignment of the joint portion is eliminated, the number of inspection steps after the joint can be reduced.

【Example】

The embodiment of the present invention shown in FIGS. 1 to 12 will be described in detail below. First, the first embodiment shown in FIGS. 1 to 6 will be described. 1 to 3 show the connector 21 in this configuration, FIG. 1 is its plan view, FIG. 2 is a front view, and FIG.
The figure is a left side view. As shown in the figure, at the tip of the holder 22, a connecting portion 24a having the same thickness as the terminal 23 is formed between the terminals 23, and the tip of the covering material of the flat cable is further provided at the tip. A clip portion 24 that is bifurcated toward the front so as to sandwich it is provided. In addition, at the position above the terminal 23 at the front end of the holding body 22, a positioning recess 25 into which the tip of the core wire of the flat cable is fitted.
Are formed. As shown in FIGS. 4 to 6, the flat cable 27 includes three core wires 29 and the core wires 29.
The coating material 28 is formed by projecting the end portions of 29. FIGS. 4 to 6 show a state in which the connector 21 having this structure is used to join the flat cable 27. FIGS. 4, 5, and 6 are a plan view, a front view, and a sectional view taken along the line VI-VI, respectively. As shown in the figure, with the core wire 29 of the flat cable 27 superposed on the terminal 23 of the connector 21, the tip of the core wire 29 fits into the positioning recess 25 formed in the holder 22 and the clip portion 24
Sandwiches the end of the covering material 28 of the flat cable 27. At this time, the core wire 29 of the flat cable 27 is superposed on the terminal 23 of the connector 21 without misalignment. Therefore, at that time, the positioning can be easily performed without using a jig or the like. Next, in this state, the core wire 29 is joined to the terminal 23 in the same manner as in the conventional case. After the joining, even if the cable 27 moves, the core wire 29 joined to the terminal 23 is not heavily loaded, so that the state can be surely maintained. Furthermore, since misalignment does not occur at the joint, the inspection after joining can be simplified. Next, the second embodiment shown in FIGS. 7 to 12 will be described. FIGS. 7 to 10 show the joined state of the flat cable and the connector in this embodiment. FIG. 7 is its plan view, FIG. 8 is a front view, and FIG. 9 is IX-IX of FIG. FIG. 10 is a sectional view taken along line XX in FIG. As shown in the figure, in this configuration, a flat cable 30 including a core wire 32 and a covering material 33 is used. On the other hand, the core wire 32 of the flat cable 30 is connected to the connector 31.
A wrapping portion 36 for holding the end portion of the covering material 33 of the flat cable 30 from both sides is formed in a state of being overlapped with the terminal 34. This holding portion 36 is a terminal with the holding body 35 of the connector 31.
They are connected on both outer sides of 34, and therefore the joint portion 39 between the terminal 34 and the core wire 32 is exposed. In this configuration, the flat cable 30 is inserted into the enclosing portion 36, and the core wire 32 and the terminal 34 are joined by a method similar to the conventional method, so that the joining can be performed easily and reliably. This wrapping portion can be modified as shown in FIGS. 11 and 12. FIG. 11 shows a wrapping portion 37 formed by connecting the underside of the flat cable 30 to the wrapping portion 36 shown in FIG.
FIG. 12 shows a holding portion 38 formed by connecting the upper side as well. However, the joint portion between the terminal 34 and the core wire 32 is in an exposed state as in the case shown in FIG. By configuring the holding portion as described above, the mounting can be easily performed while positioning, and even if the flat cable moves after the joining, it is possible to avoid applying a load to the joining portion. It is possible to make the joining state between the cable and the flat cable more reliable. Further, the misalignment of the joining portion is eliminated, and the inspection after joining can be simplified. In each of the above-described embodiments, the numbers and widths and thicknesses of the core wire and the terminals, the shapes and sizes of the engaging holes and the engaging protrusions, and the number are merely examples, and it goes without saying that various other configurations can be made. Yes.

[Brief description of drawings]

1 to 6 show a first embodiment of the present invention,
1 is a plan view of the connector, FIG. 2 is a front view thereof, and FIG.
The figure is a left side view, FIG. 4 is a plan view showing a joined state of a flat cable and a connector, FIG. 5 is its front view, FIG. 6 is a sectional view taken along line VI-VI of FIG. 5, and FIG. FIG. 12 shows a second embodiment of the present invention. FIG. 7 is a plan view showing a joined state of a flat cable and a connector, FIG. 8 is its front view, and FIG. 9 is IX-IX of FIG. A line sectional view, FIG. 10 is a sectional view taken along line XX of FIG. 8, FIG. 11 is a sectional view showing a first modification of the holding portion, and FIG. 12 is a sectional view showing a second modification of the holding portion. , Thirteenth
From FIG. 23 to FIG. 23 shows a conventional example, FIG. 13 is a plan view of a flat cable, FIG. 14 is its front view, FIG. 15 is a right side view, FIG. 16 is a plan view of a connector, and FIG. FIG. 18 is a front view thereof, FIG. 18 is a sectional view taken along line XVIII-XVIII of FIG. 17, and FIG. 19 is a plan view showing a joined state of a flat cable and a connector.
20 is a front view thereof, FIG. 21 is a sectional view taken along line XXI-XXI of FIG. 20, FIG. 22 is a sectional view taken along line XXII-XII of FIG. 20, and FIG. It is a top view which shows the state which arose and was joined. 21 …… Connector, 22 …… Holder, 23 …… Terminal, 24 …… Clip part, 25 …… Positioning recess, 26 …… Joint part, 27 ……
Flat cable, 28 …… coating material, 29 …… core wire, 30 ……
Flat cable, 31 ... Connector, 32 ... Core wire, 33 ...
… Coating material, 34 …… Terminal, 35 …… Holder, 36,37,38 …… Hugging part, 39 …… Joining part

Claims (2)

[Scope of utility model registration request] 1. A flat cable (27) having an end portion of a core wire (29) protruding from a covering material (28), and the core wire (29).
In a connection structure with a connector (21) formed by projecting a terminal (23) to be overlaid and joined to a holding body (22), the holding body (22) of the connector (21) includes the core wire (29).
And a clip portion (24) for sandwiching the covering material (28) at a position lateral to the core wire (29) at the end of the covering material (28). Characteristic flat cable and connector connection structure. 2. A flat cable (30) having an end portion of a core wire (32) protruding from a covering material (33), and the core wire (32).
In a connection structure with a connector (31) formed by projecting a terminal (34) to be overlapped and joined to a holding body (35), the holding body (35) of the connector (31) is the holding body (35).
The flat cable (30) is provided with a wrapping portion (36, 37, 38) for wrapping around the end of the covering material (33) of the flat cable (30) in front of the terminal (34) protruding from the terminal. Connection structure of flat cable and connector.