JPH066470Y2 - Contact in multi-core connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to improvements in contacts in a multi-core connector having a plurality of contacts.

[Prior Art] A multi-core connector A, which is called a round connector or a mini-den connector, is usually made of a metal material or a metal material that serves as a guide when connecting to a mating connector, as shown in FIG. A guide sleeve 1 formed of a synthetic resin material into a tubular shape, and a pole holding member 2 which is molded into a plug shape from the synthetic resin material and is integrally or integrally assembled with the guide sleeve 1.
Each of the plurality of pole holding holes 20 formed in the pole holding member 2 in a predetermined arrangement state at the time of forming the pole holding member 2 is formed by bending a metal plate to form a pin-shaped contact terminal portion 30 at the tip. The connector main body a is assembled by fitting and holding the contacts 3 which are provided with the channel-shaped connection terminal portion 31 on the rear end side and are held therein. The terminals of the core wires 40 of the cord b are connected to the connection terminal portion 31 on the rear end side (the right end side in FIG. 1) of the plurality of contacts 3 held by ... A body c molded of a synthetic resin material or a metal material so as to cover the connection portion between the contacts 3 ... And the core wire 40 of the cord b is assembled by molding or fitting on the outer periphery on the rear end side. Assembled in That.

[Problems to be Solved by the Invention] The contact 3 used in the thus-assembled multicore connector A is assembled on the connector main body a while being held by the pole holding member 2, and is attached to the connection terminal portion on the rear end side of the contact 3. In the work of connecting the end of the core wire 40 of the cord b by soldering, the pole holding hole 2 provided in the pole holding member 2
When the end of the core wire 40 of the cord b to be connected is inserted into the inner cavity of the contact 3 which is fitted and held in the pole holding hole 20 from the opening on the rear end side of 0, It may be inserted too deeply so that the tip side of the core wire 40 protrudes from the pin-shaped contact terminal portion 30 at the tip of the contact 3, or the insertion is too shallow and the connection by soldering becomes uncertain. I have a problem to do.

Further, a body c, which covers the outer periphery of the base end side of the connector main body a in which the core wires 40 of the cord b have been connected, is molded by pouring a molten synthetic resin material around the connector main body a put in a mold. When assembling by
The poured synthetic resin material flows into the inside of the pole holding hole 20 that opens to the rear end surface of the pole holding member 2 and then passes through the inner hole of the contact 3 in the pole holding member 2 and the pole holding member 2
When the assembled multi-core connector A is connected to the mating connector, there is a problem in that the connection is defective by leaking to the front side of the and solidifying.

Further, in order to hold the contact 3 fitted in the pole holding hole 20 of the pole holding member 2 in the fitted state, the pole holding hole 2 is engaged with a lance mounted on the contact 3.
There is a problem that the engaging portion formed on the inner peripheral surface of No. 0 complicates the molding of the pole holding member 2.

By the way, as a means for preventing the resin material from leaking to the front side of the pole holding member 2 along the inner cavity of the pole holding hole 20 at the time of molding with a synthetic resin material, a practical method is used. As disclosed in Japanese Unexamined Patent Publication No. 46-40178, a means and an actual means for cutting and raising a stopper for blocking the inner cavity of a contact body formed in a channel shape from left and right side walls and a bottom wall. As disclosed in Japanese Unexamined Patent Publication No. 61-167382, there is known a means for cutting and raising a sealing piece for blocking an inner cavity of a contact body from a bottom plate. However, these means do not ensure that the end of the core wire of the cord is blocked because there is a gap on the left or right or top and bottom.

Further, as for the engaging portion which is formed so as to engage with the lance so as to hold the contact in the inserted and inserted position, as described in these publications, the conventional means has the inner circumference of the pole holding hole. It is formed in a protruding shape on the surface, and has a structure in which molding of the pole holding member is troublesome.

[Purpose] The present invention has been made in order to solve these problems that have occurred in the conventional means, and the cord b for the connection terminal portion 31 at the rear end of the contact 3 held by the pole holding member 2 is provided. The insertion of the core wire 40 in the work of connecting the core wire 40 is restricted to a constant insertion depth, and at the same time, the means for restricting the insertion depth of the core wire 40 is formed by molding the body c with a synthetic resin material. At the time of carrying out, it becomes a member for preventing the poured synthetic resin material from leaking out to the front end face side of the pole holding member 2 so as to surely prevent the resin material from leaking out, An object of the present invention is to provide a new means capable of forming an engaging portion provided to engage with a lance of a fitted mintact without making the structure of the pole holding member troublesome.

[Means for Solving the Problem] In the present invention, as means for achieving this object, a pin-shaped or sheath-shaped contact terminal portion is formed by bending from a metal plate to form a contact terminal portion on the front end side. In a contact of a multi-core connector in which a channel-shaped body portion and a connection terminal portion are formed in the rear side and held in the pole holding holes of the pole holding member, in the upper edges of the left and right side walls of the body portion, facing backward. The protruding lances are each shaped and installed in such a shape that they project outward to the left and right as they go rearward, and at the location behind them that is located on the front end side of the connection terminal part, the width of the side walls spans the left and right side walls. A weir plate with a height that is aligned with the upper edge of the weir plate is installed by cutting and raising it from the floor plate, and the bent pieces bent from the upper edges of the left and right side walls are superposed on the front side of the upper end side of the weir plate, The first half member and the second half member that integrally join the holding members by fitting And the front end face of the latter half member, which is joined to the rear end face of the first half member,
A multi-core connector characterized in that a contact fitted into a pole holding hole is set at a position corresponding to a rear end portion of the lance, and an engaging portion with the lance is formed by a front end surface of the latter half member. It is to raise a contact.

Example Next, an example will be described in detail with reference to the drawings. The same reference numerals are used for the constituent members having the same effects as those of the conventional means.

FIG. 2 is a vertical side view of a multi-core connector A embodying the present invention. In FIG. 2, a is a connector body, 1 is a guide sleeve, 2 is a pole holding member, 3 is a contact, b is a cord,
c indicates a body made of a synthetic resin material.

The connector body a is a metal material (may be a synthetic resin material)
In the inner cavity of the guide sleeve 1 formed in a cylindrical shape, the pole holding member 2 molded into a plug shape with a synthetic resin material is fitted in a state in which the contacts 3 are held in the pole holding holes 20 provided therein. It is of a normal form assembled by doing.

The pole holding member 2 is, as shown in FIG. 4, a front half member 2a having a female fitting portion 5 on the rear end face side, and a male fitting member on the front end face as shown in FIG. The latter half member 2b having the joint portion 6 is divided into two parts, which are separately molded with a synthetic resin material. The female fitting portion 5 formed on the rear surface side of the front half member 2a is, as shown in FIG.
A ring-shaped cylindrical wall 50 protruding toward the rear surface on the outer peripheral edge of the rear end surface 21, and a pair of cutout portions 51, 51 formed in a notch shape along the axial direction in a part of the cylindrical wall 50 in the circumferential direction. , A flat surface portion 500 formed on the inner peripheral surface side of the portion 50a of the cylindrical wall 50 located above the pair of cutout portions 51.

Further, a male fitting portion 6 provided on the front surface side of the latter half member 2b.
As shown in FIG. 5, the inner peripheral side of the cylindrical wall 50 of the female fitting portion 5 provided on the outer peripheral portion of the rear end surface of the front half member 2a in the portion excluding the outer edge portion of the front end surface 22. Board-shaped ridge 60 formed so as to project forward so as to be fitted to the front wall, and a pair of notches formed in the above-mentioned cylinder wall 50 on both left and right shoulders of the board-like ridge 60. Overhanging portions 61, 61 formed so as to be fitted into the respective 51, 51 and projecting to the outer peripheral side
And the portion 5 of the above-mentioned cylindrical wall 50 on the upper peripheral surface side of the plate-shaped ridge.
It is composed of a flat surface portion 50b formed on the inner peripheral side of 0a and a corresponding flat surface portion 62. Further, in the front half member 2a and the rear half member 2b, pole holding holes 20 ... Retaining the contacts 3 are formed in the front half member 20a and the rear half member 20b separately. The front half 20a of the pole holding hole 20 formed in 2a is formed such that the diameter of the rear half of the pole holding hole 20 is such that the lance w for forming the contact 3 therein can be received in an extended state as shown in FIG. Further, as shown in FIG. 6, the rear half 20b of the pole holding hole 20 formed in the rear half member 2b is formed to have a diameter for receiving the contact 3 in a compressed state of the lance w formed therein. As a result, when the contact 3 is inserted from the rear surface side (the right surface side in FIG. 6), the lance w protrudes at the front surface of the disc-shaped raised portion 60, and the contact hole 3 of the pole holding hole 20 is formed. Front of the second half 20b The front end surface of the disk-shaped raised portion 60 which has a front end face of the second half member 2b which is a peripheral portion of the opening portion as the engaging portion y of, are set to be a state of engagement there.

Then, the pole holding member 2 is formed by fitting the front half member 2a and the rear half member 2b thus formed with the female fitting portion 5 and the male fitting portion 6 formed at their abutting portions. As a result, the pole holding member 2 is integrally assembled.

FIG. 7 shows the contacts 3 according to the present invention which are inserted into the pole holding holes 20 of the pole holding member 2 ... The contact 3 has a form formed by bending a metal plate, and has a contact terminal portion 30 that is rounded in a pin shape on the front end surface (the left end side in the figure) (the contact terminal portion 30 is a sheath shape). In some cases, the body 32 and the connection terminal 31 at the rear end are formed in a channel shape with the floor plate 3a and the left and right side walls 3b and 3b. Then, on the body 32, the left and right side walls 3b are provided on both left and right sides.
A pair of lances w (engaging pieces), which are cut and raised from the upper edge of 3b and project outward, are formed so as to face each other in the left and right directions. The lance w may be provided on one of the left and right sides, or may be formed so as to be bent inward. Further, a floor plate 3a of the trunk portion formed in a channel shape continuous to the connection terminal portion 31 on the rear end side is provided in a portion of the trunk portion 32 which is located rearward of the portion where the lance w is formed.
With a width that extends between the inner wall surfaces of the left and right side walls 3b and 3b, and rises to a height that is aligned with the upper edges of the left and right side walls 3b and 3b to close the front end side of the inner cavity of the connection terminal 31. Vertical weir plate 3
3 on the front side of the barrier plate 33, the left and right side walls 3
Bending pieces 34.3 bent from b.3b and bent inward
4 is abutted so that the barrier plate 33 is held from the front side so as not to move forward. The bent pieces 34, 34 for blocking the forward movement of the barrier plate 33 are provided on the inner surface side of the left and right side walls 3b, 3b of the body portion of the connector 3 at the 12th position.
As shown in the figure, there may be a case where the front surface side is changed to a projection 34 ', 34', and the rear end surface is a flat surface along the left-right direction.

As shown in FIG. 2 and FIG. 6, the body portion 32 has a lateral width and a height corresponding to the pole holding hole 20 provided in the pole holding member 2 in a portion where the dam plate 33 is provided. It is formed so as to be aligned with the width and height of the portion, so that when the contact 3 is fitted and held in the pole holding hole 20 provided in the pole holding member 2, the pole holding hole 20 is A portion of the body 32 of the contact 3 where the dam plate 33 is provided closes the inner cavity like a plug, and the passage of the contact 3 before and after the inner space is blocked by the weir plate 33.

In the illustrated embodiment, 7 is a guide sleeve 1.
A cap fitted in the opening on the rear end side is provided with a through hole for inserting the cord b in the shaft core portion, and the cord b connected when assembled to the multi-core connector A as shown in FIG. It also serves as a cord retaining device that holds the cord so that it does not escape.

[Effects of the Invention] As described above, in the contact of the multi-core connector according to the present invention configured as described above, the lances w and w mounted on the contact 3 have the pole holding holes of the latter half member 2b of the pole holding member 2. When it comes out from the rear half side 20b of 20 to the front side of the rear half member 2b, it expands to the left and right and engages with the front end face of the latter half member 2b. Barrier plate 33 provided on the body 32 of the contact 3
However, since the inner cavity of the latter half 20b of the pole holding hole 20 of the latter half member 2b is dammed with almost no gap, the contact 3 for connecting the core wire 40 of the cord b is formed.
When it is inserted into the connection terminal portion 31, the insertion of the core wire 40 can be properly regulated. In addition, this barrier plate 33 is a bent piece 34.3 that overlaps with the front surface of its upper end side.
Since it is reinforced by the load from the rear by 4, the resin material can be surely prevented from leaking to the front surface side of the pole holding member 2 when the resin material is molded.

Then, in order to hold the contact 3 fitted in the pole holding hole 20 of the pole holding member 2 in the fitted state, the contact 3
Since the engaging portions y and y formed on the pole holding member 2 so as to be engaged with the lances w and w of the pole holding member 2 are formed with the front end face of the latter half member 2b of the pole holding member 2, the pole holding member 2 is held. The shape of the hole 20 is simplified and the pole holding member 2 is easily formed.

[Brief description of drawings]

FIG. 1 is a vertical side view of a conventional means, FIG. 2 is a vertical side view of a multicore connector according to the present invention, FIG. 3 is a front view of the same as above, and FIG. 4 is a front half member of a pole holding member of the same above. Fig. 5 is a perspective view seen from the rear side, Fig. 5 is a perspective view seen from the front side of the latter half member of the pole holding member of the above, and Fig. 6 is a front view of the former half member and the latter half member of the pole holding member above are fitted together. FIG. 7 is a perspective view of the contact according to the present invention, FIG. 8 is a vertical sectional side view of the same contact, FIG. 9 is a plan view of the same as above, FIG. 10 is a side view of the same as above, and FIG. The drawing is a front view of the same as above, and FIG. 12 is a plan view of another embodiment of the same. Description of reference symbols A ... Multi-core connector, a ... Connector body b ... Code, c ... Body w ... Lance, y ... Engagement portion 1 ... Guide sleeve, 2 ... Pole holding member 2a ... ... 1st half member, 2b ... 2nd half member 20 ... pole holding hole, 20a ... 1st half side 20b ... 2nd half side, 21 ... rear end face 22 ... front end face, 3 ... contact 3a ... floor plate, 3b ... Side wall 30 ... Contact terminal part, 31 ... Connection terminal part 32 ... Body part, 33 ... Dam plate 34 ... Bend piece, 34 '... Protrusion 40 ... Core wire, 5 ... Female type fitting Part 50 ... Cylinder wall, 50a ... Part 50b ... Flat part, 500 ... Flat part 51 ... Notched part, 6 ... Male fitting part 60 ... Plate-shaped raised part, 61 ... Tension Outer part 62 ... Flat part, 7 ... Cap

Claims (1)

[Scope of utility model registration request] 1. A metal plate is bent to form a pin-shaped or sheath-shaped contact terminal portion 30 on the front end side, and a channel-shaped body portion 32 and a connection terminal portion 31 are formed behind it to form a pole. In the contact 3 of the multi-core connector which is held in the pole holding hole 20 of the holding member 2, the left and right side walls 3b of the body portion 32
Lance w, which protrudes rearward at the upper edge of 3b
Are formed in such a shape that they project to the outside on the left and right as they go rearward, and at the location located on the front end side of the connection terminal portion 31 behind them, with a width across the left and right side walls 3b and 3b. A weir plate 33 having a height aligned with the upper edges of the side walls 3b and 3b,
The pole holding member 2 is installed by cutting and raising from the floor plate 3a, and folding pieces 34, 34 bent from the upper edges of the left and right side walls 3b, 3b are superposed on the front side of the upper end side of the barrier plate 33. A contact 3 in which the front end face of the latter half member 2b which is divided into a first half member 2a and a latter half member 2b which are integrally joined by fitting and which is joined to the rear end face of the first half member 2a is inserted into the pole holding hole 20.
Set to the position corresponding to the rear end of the lance w
A contact in a multi-core connector, characterized in that an engaging portion y, y with the lance w, w is formed by a front end surface of the latter half portion 2b.