JPH0452944Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a connector that linearly connects cords to each other in the axial direction thereof.

[Prior Art] In general, a conventional connector includes a casing having a core wire insertion hole into which a core wire of each cord is inserted, and a terminal installed in the casing to connect the core wires.

In addition, in Utility Model Application No. 56-147586, the metal contact piece of a socket for a wedge-based light bulb is provided with opposing locking pieces with the tips cut out, and a boss on the bottom of the body is press-fitted into the hole between the locking pieces. A structure for attaching it is disclosed.

[Problems to be Solved by the Invention] However, when attaching terminals to connectors according to the prior art, the following problems occurred.

That is, conventionally, a structure in which a terminal is attached to a casing with an adhesive is known. However, in such a case, the terminal is likely to peel off from the casing due to pressure when the cord is press-fitted into the terminal itself, external impact to the casing itself, or the like.

Furthermore, according to the mounting structure of Utility Model Application Publication No. 56-147586, in order to press fit the hole into the boss, the locking pieces are raised facing each other and spread out like a skirt around the boss. It was hot. Furthermore, during press-fitting, upward bending stress is applied to the remaining pieces other than the locking piece, which tends to cause bending.

Therefore, even if the above mounting structure is applied to a connector, the holder cannot be pushed all the way to the bottom across the slit terminal because the pair of locking pieces that extend like a skirt around the boss will get in the way. It was hot. Moreover, since the spread state of the locking piece changes slightly depending on the degree of press-fitting, the holder cannot be brought into close contact with the casing, and even if a relief is provided on the lower surface of the holder, it must be made large. In any case, it was found that this hindered reliable cable connection.

Furthermore, when connecting cords in a straight line in the axial direction, it is desirable to arrange multiple terminals in parallel so that they do not expand in the width direction as much as possible, but this point has not been resolved at all. . Even if it were assumed that the width of the terminal was made narrower as a solution to this problem, the above-mentioned bending during press-fitting would only be facilitated, and installation without backlash would not be possible. In particular, due to the press-fitting of the center portion into the boss, it was easily predicted that the slit terminal portion at the end in the axial direction would be misaligned.

Therefore, the present invention was developed in view of the above-mentioned circumstances, and it is an object of the present invention to provide a linear connection connector in which an elongated flat contact piece can be firmly press-fitted without increasing the dimension of the casing in the width direction. That is the purpose.

[Means for Solving the Problems] The linear connection connector according to the present invention includes a narrow flat connecting portion, a wide extending portion extending flat from both ends of the connecting portion, and each extending portion. A plurality of slit terminals each consisting of a pair of slit terminals raised from the tip, a substantially arcuate hole drilled in the center of the connecting portion, a narrow elongated hole intersecting the arcuate hole, and these slit terminals. A fitting hole consisting of a recessed part formed at the intersection of each hole, and a plurality of slit terminals are arranged in such a way that the narrow connection part and the wide extension part are brought closer to each other and shifted in the cord axis direction. a terminal installation recess provided on the top surface of the bottom of the casing in which the connection part and extension part of each slit terminal are respectively installed; A cylindrical protrusion that fits into the fitting hole and presses against the recessed part when placed in the installation recess, and a core wire of the cord inserted from the axial direction is pushed into the slit terminal part and connected to the casing. A holder is attached to the top surface of the bottom of the cord in close contact with the holder, and a jacket pressing means is provided on the holder and holds the jacket of the cord between it and the casing in the axial direction of the cord.

[Function] The corresponding arc-shaped hole of the slit terminal is pushed into the cylindrical protrusion without generating bending stress. The sagging portion that occurs at the intersection of the arcuate hole and the elongated hole is larger than the thickness of the terminal and does not protrude toward the surface, so it digs into the protrusion instead of expanding as if it were wrapped around the protrusion.

In the slit terminal, the center part of the narrow flat connecting part bites into the protrusion through the fitting hole, and the connecting part and the extending part are locked and fixed in the terminal installation recess. Each slit terminal is assembled in such a manner that the connecting portion of one slit terminal is combined with the wide extension portion of the other slit terminal, and the width of the slit terminal as a whole is narrow and is installed along the cord axis direction.

[Embodiment of the invention] An embodiment of the invention will be described below with reference to FIGS. 1 to 5.

First, FIG. 1 shows an exploded perspective view of a linear connection connector to which the present invention is applied.

In the figure, 1 is a casing, and the casing 1 has a substantially elongated rectangular parallelepiped shape, has an open top surface, and has openings 2 and 3 formed in each end surface. The casing 1
is a first cord retaining portion 4 communicating with the opening 2;
and a second cord retaining portion 5 communicating with the opening 3.
and a cord connecting portion 6 located between the first and second cord retaining portions 4 and 5. The first and second cord retaining portions 4 and 5 are narrower than the cord connecting portion 6, and are partitioned by step walls 7 and 8.

On the bottom surfaces of the first and second cord removal prevention parts 4 and 5, removal prevention protrusions 9, . . . are formed. As shown in FIG. 2, each retaining protrusion 9 is composed of a tapered surface 9A raised inward and a vertical surface 9B. Each side wall 10 of the first and second cord retaining parts 4, 5 is composed of a thick part 11 located on the side of the openings 2, 3, and a thin part 12 extending to the thick part 11. At the lower part of the thin wall portion 12, an engagement step portion 14 is formed by forming a thin wall portion 13 which is further thinner.

The cord connecting portion 6 is composed of a first chamber 15 and a second chamber 16, and a protrusion 17 is formed between the first chamber 15 and the second chamber 16. 15, and a pair of engagement recesses 18, . . . 19, .
Terminal installation recesses 20, . . . are formed on the bottom surface of the cord connecting portion 6. Recess for installing each terminal 2
0, as shown in FIG. , the wide portion 23 is formed within the second chamber 16. As shown in the figure, these terminal installation recesses 20, . . . have a narrow part 21 and a wide part 22, 23
are formed so that they are adjacent to each other. Here, a cylindrical protrusion 24 is formed approximately at the center of each terminal installation recess 20 .

Terminals 25 are installed in each of the terminal installation recesses 20. The terminal 25 is connected to the connecting portion 2 in the form of a narrow flat plate.
6, wide extending portions 27, 28 extending in a flat plate shape at both ends of the connecting portion 26, and the extending portions 27, 28.
The slit terminal portions 29 and 30 stand up at right angles from the slit terminal portions 29 and 30, forming a U-shape. The terminal installation recess 20 has the same width as the narrow width part 21, and the extension parts 27 and 28 have the same width as the wide width parts 22 and 23. A slit 31 is formed in the center of each of the slit terminal portions 29 and 30, and the slit 31
1 is composed of a vertical groove 32 and a guide groove 33 extending into the vertical groove 32 and gradually becoming wider than the vertical groove 32.

Here, a fitting hole 34 is formed in the center of the connecting portion 26 of each terminal 25 to fit into the protrusion 24 of the terminal installation recess 20. As shown in FIG. 3, the fitting hole 34 includes an elongated hole 35, an arcuate hole 36 formed in the center of the elongated hole 35, and a sag formed at the connection point between the arcuate hole 36 and the elongated hole 35. Part 37,
It is composed of...

To form the fitting hole 34, first, an arcuate hole 36 is punched out as shown by the dashed line in FIG. The diameter of the arcuate hole 36 is made to be approximately the same size as the outer shape of the protrusion 24 or slightly smaller. Next, a long hole 35 is punched out as shown by the two-dot chain line. The elongated hole 35 has a width narrower than the diameter of the protrusion. These arcuate holes 36
By punching out the elongated holes 35, the recessed portions 37, . . . shown in FIG. 3 are formed at the connection points A, . These sagging portions 37,
... protrudes slightly inward from the inner periphery of the arcuate hole 36, is located within the thickness of the connecting portion 26, and can be directed slightly downward from the bottom surface as shown.

Further, numerals 38 and 39 in FIG. 1 indicate first and second holders. These first and second holders 38 and 39 are
A connection holder portion 40 and a presser holder portion 42 extending from the connection holder portion 40 via a hinge portion 41.
The connection holder portion 40 is comprised of a narrow portion 42 and a wide portion 43. The connection holder portion 40 has a pair of opposing side plates 44,
..., an end plate 45, a top plate 46, and a bottom plate 47 to form a substantially rectangular parallelepiped shape.
As shown in the figure, it serves as a cord insertion opening 48. Here, the narrow part 42 of the first holder 38 is fitted into the first chamber 15 from above,
Further, the narrow portion 42 of the second holder 39 is fitted into the second chamber 16 from above. Therefore, the bottom plate 47 of both narrow width parts 42 has a recess 49 into which the protrusion 24 is fitted, and fittings 50 and 5 into which the slit terminal parts 29 and 30 of the terminal 25 are fitted.
1 is formed. In addition, each of the narrow portions 42,
Engagement projections 52, . . . 53, . . . that engage with the engagement recesses 18, . There is. Furthermore, the cord removal prevention portion 10 is provided on the inner surface of the side wall of the wide portion 43 and the holding holder portion 42A.
An engagement protrusion 54 that engages with the engagement step 14 is formed.

Next, the effect will be explained.

First, from the state shown in FIG. 1, the protrusions 24, . . . are press-fitted into the fitting holes 34 of the terminals 25, .
Fixed inside. At this time, the fitting holes 34, 34
Since the recessed portions 37, . Therefore, since the protrusion is prevented from coming out of the fitting hole, the terminal 25,
25 is firmly fixed to the casing.

Thereafter, the second code P is inserted into the second holder 39. In this embodiment, since two terminals 25, 25 are installed, two core wires are inserted as the second cord P. At this time, these two core wires are connected to the slit terminal portion 30 of the terminals 25, 25,
It is located directly above 30.

Then, use pliers or the like to remove the second holder 39.
When the cord is strongly pushed into the cord connecting portion 6, the core wire of the cord fits into the vertical groove 32 of each terminal 25, 25, and is electrically connected to the terminal 25, 25. Thereby, the core wire of the second cord is electrically connected to the core wire R of the first cord Q, which has already been completed in the same manner as above, as shown in FIG. Holder 3
8 and 39 are in close contact with the bottom upper surface of the casing 1.

Note that the fitting hole 34 has a long hole 35 and an arcuate hole 3.
It was formed by punching consisting of two steps in step 6.
These may be performed in one step.

[Effects of the Invention] As explained above, the linear connection connector according to the present invention provides the following effects.

Since the arc-shaped hole of the fitting hole is made into an arc shape to correspond to the cylindrical protrusion, and the recessed part is made to protrude from the arc surface, bending stress is not generated in the narrow flat plate-shaped connection part during installation. Moreover, since the sagging portion does not expand toward the surface side, the slit terminal, which is made as narrow as possible, can be securely fixed.

In addition to the above-mentioned fixation, since the slit terminal is fitted into the terminal installation recess, displacement in the horizontal direction within the casing can be prevented, and the slit terminal is firmly fixed within the casing.

By arranging a plurality of slit terminals in the casing by shifting the adjacent narrow flat plate-like connecting portions and the thick extending portions in the axial direction, and installing the narrow slit terminals as described above, the width of the casing The dimension in the direction can be made compact, and the connector for straight connection can be put to practical use.

[Brief explanation of the drawing]

1 to 5 relate to an embodiment of the linear connection connector according to the present invention, in which FIG. 1 is an exploded perspective view, FIG. 2 is a sectional view, and FIG. 3 is a fitting hole and a protrusion. FIG. 4 is a plan view of the casing, and FIG. 5 is a diagram showing the order of fitting hole forming. 1...Casing, 20...Recess for terminal installation,
24...Cylindrical protrusion, 25...Slit terminal, 2
6... Connection part, 27, 28... Extension part, 29, 3
0...Slit terminal part, 34...Fitting hole, 35...
...Long hole, 37... Recessed part, 38, 39... Holder.

Claims (1)

[Scope of utility model registration request] a plurality of slit terminals comprising a narrow flat connecting part, a wide extending part extending flat from both ends of the connecting part, and a pair of slit terminal parts rising from the tip of each extending part; a fitting hole formed in the center of the connecting portion and consisting of a substantially circular arc-shaped hole, a narrow long hole intersecting the arc-shaped hole, and a recessed portion formed at the intersection of these holes; A casing in which a plurality of slit terminals are arranged with narrow connecting portions and wide extending portions close to each other and shifted in the cord axis direction; a terminal installation recess in which a slit terminal is installed, and a slit terminal protruding from the center of each terminal installation recess, so that when a slit terminal is placed in the terminal installation recess, it fits into the fitting hole and the terminal a cylindrical protrusion with which the parts are in pressure contact; a holder that connects the core wire of the cord inserted from the axial direction by pushing it into the slit terminal part and is attached to the top surface of the bottom of the casing; A connector for linear connection comprising an outer cover holding means for holding the outer cover between the outer cover and the casing in the axial direction of the cord.