JPH0532943Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pole holding member made of a synthetic resin material that holds the contacts and forms a connector body in a multicore connector having a plurality of contacts.

As shown in Figure 1, the multi-core connector A, which is called a round connector or a mini-den connector, is usually made of a metal or synthetic resin tube to serve as a guide when connecting to a mating connector. a guide sleeve 1 formed into a shape, a pole holding member 2 molded into a plug shape from a synthetic resin material and assembled integrally or integrally with the guide sleeve 1; A plurality of pole holding holes 20 are formed as an arrangement state of...
A contact 3 that is inserted into and held in each of the
. . . , the connector main body a is assembled, and each rear end side (the first
Connect the terminals of each core wire 40 of code b to the right end side in the figure by soldering etc., and
It is assembled by assembling a body c formed of a synthetic resin or metal material onto the outer periphery of the rear end side by molding or fitting so as to cover the connection part with the cord b.

To assemble the contacts 3 to the pole holding member 2 of the multi-core connector A assembled in this way, normally, when the contacts 3 are molded from a metal material, a lance w, which is a harpoon-like locking piece, is attached to the outside. The pole holding hole 2 of the pole holding member 2 is formed so as to protrude from the pole holding member 2 into which the contact 3 is inserted and held.
An engaging portion y that engages with the lance w on the inner wall surface of the
is formed, and the contact 3 is inserted into the pole holding hole 20.
Insert it from the open opening on the rear end side and push it in. As a result, the abutment part provided on the contact 3 hits the step part provided on the inner wall surface of the pole holding hole 20, and it is fitted into the predetermined position. Once inserted, the lance w engages with the engaging portion y to prevent it from returning, and thereafter the contact 3 is held stationary relative to the pole holding member 2.

However, once the contact 3 is inserted into the pole holding hole 20, it cannot be removed from there, and this method cannot be used when there is a mistake in the connection of the core wire 40 of code B. Because there is no
The pole holding member 2 is divided into two parts, a first half member 2a and a second half member 2b, which are specially molded, and the male and female fitting portions formed in the abutting portions are fitted together. An engaging portion y that is coupled to the integral pole holding member 2 and that engages with the lance w is formed in the latter half member 2b, so that the pole holding member 2 remains intact even after the contact 3 is inserted. The contact 3 can be removed by dividing it into a front half member 2a and a rear half member 2b.

By the way, the pole holding member 2, which is molded separately into the first half member 2a and the second half member 2b, has a female fitting part formed in a cylindrical shape at the abutting part of one of the first half member 2a and the second half member 2b. When molding the first half member 2a and the second half member 2b, in order to make the fitting of the male fitting part formed in the shape of a plug or disk in the other abutting part tight. There is a problem in which the accuracy must be increased, and from this,
There is a problem in that the task of assembling the pole holding member 2 by fitting the male and female fitting portions together becomes troublesome. Furthermore, when the male and female fitting portions are fitted together to assemble the pole holding member 2, the pole holding holes 20 formed in the front half side of the pole holding hole 20 formed in the first half member 2a and the pole holding hole 20 formed in the second half member 2b are In order to align the cores and maintain proper continuity with the rear half of the cylindrical female fitting part, a protrusion is provided on a part of the inner peripheral surface of the plug-shaped male fitting part. By providing grooves on the outer circumferential surface of the part that engage these protrusions, and aligning the protrusions and grooves, the male and female mating parts The assembling work of the pole holding member 2 due to the fitting of the two parts becomes even more troublesome.

The present invention solves the above-mentioned problem that occurs in the pole holding member of a multi-core connector in which the first half member 2a and the second half member 2b are molded separately and assembled by fitting with male and female fitting parts. This was developed to solve the problem, and it is possible to form the male and female fitting parts so that they fit tightly together without requiring much precision in molding them, and,
Positioning when fitting them together can now be done in a state that can be seen from the outside until the final stage of fitting, and the mating parts of the male and female molds are elastically bound. It is an object of the present invention to provide a new means for firmly connecting the front half member and the rear half member.

In the present invention, as a means to achieve this objective, in a pole retaining member of a multi-core connector that is molded into a plug shape from a synthetic resin material and held in the inner cavity of a guide sleeve, the pole retaining member is attached to the front half of the connector. The first half member and the second half member are divided into two parts and molded separately, and the first half member and the second half member are made of
A female fitting part with a notch along the axial direction is formed in a part of the circumferential direction of the cylindrical wall on one of the abutting parts, and a plate that fits on the inner circumferential side of the cylindrical wall is formed on the other side. The present invention proposes a pole holding member in a multi-core connector, characterized in that a male fitting part is formed on the outer periphery of a shaped raised part, and a protruding part that fits into the aforementioned notch is formed.

Next, embodiments will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for constituent members having the same effect as those of the previous means.

FIG. 2 is a longitudinal sectional side view of a multicore connector A that can implement the present invention, in which a represents the connector body;
1 is a guide sleeve, 2 is a pole holding member, 3 is a contact, b is a cord, and c is a body made of a synthetic resin material.

The connector body a has a pole holding member 2 formed in the shape of a plug made of a synthetic resin material in the inner cavity of a guide sleeve 1 formed in a cylindrical shape from a metal material (sometimes a synthetic resin material). It is of a normal form and is assembled by fitting the contacts 3 while holding them into the holding holes 20.

As shown in FIG. 4, the pole holding member 2 includes a front half member 2a having a female fitting portion 5 on the rear end surface side.
As shown in FIG. 5, it is divided into two parts, a rear part 2b having a male fitting part 6 on the front end surface, and each part is molded separately from a synthetic resin material.

As shown in FIG. 4, the front half member 2a has a ring-shaped cylindrical wall 50 that protrudes toward the rear surface at the outer peripheral edge of the rear end surface 21, and the cylindrical wall 20 is directed in the circumferential direction. In a part of the cylindrical wall 50, cutouts 51 along the axial direction are arranged so as to occupy two positions out of three positions in which the cylindrical wall 50 is arranged approximately three times in the circumferential direction. They are designed to face each other. As shown in FIG. 4, a portion 50a of the cylindrical wall 50 located above the pair of notches 51, 51 has an inner circumferential side facing the pair of notches 51, 51. A plane 5 that crosses the cylinder wall 50 so as to be suspended between the upper edges of the
00, thereby forming a female fitting portion 5 on the outer circumferential side of the rear end surface 21.

Further, as shown in FIG. 5, the second half member 2b has a front end surface 22 and a female fitting portion 5 provided on the outer periphery of the rear end surface of the first half member 2a. A disk-shaped raised portion 60 is formed to protrude forward so as to fit into each other, and a pair of notches 51 provided in the above-mentioned cylinder wall 50 are formed on both left and right shoulders of the disk-shaped raised portion 60. .
It is formed on a flat surface 62 corresponding to the flat surface 500 formed on the inner peripheral side of 0a, thereby forming a male fitting portion 6. Note that the female fitting portion 5 and the male fitting portion 6 formed at the abutting portions of the first half member 2a and the second half member 2b are exchanged so that the male fitting portion 6 is formed on the first half member 2a. It may be formed by

In addition, the pole holding holes 20 formed in the pole holding member 2 are formed in the front half member 2a and the latter half member 2b, dividing them into the front half side 20a and the rear half side 20b. The diameter of the rear half of the front half side 20a of the pole holding hole 20 formed in 2a is formed to a diameter that allows the lance w in which the contact 3 is formed in each to be received in an overhanging state, as shown in FIG. Also, the second half member 2
As shown in FIG. 6, the rear half side 20b of the pole holding hole 20 formed in b is formed to have a diameter that accepts the lance w in which the contacts 3 are respectively formed in a squeezed state, and thereby, contact 3
When the lance w is inserted from the rear side (the right side in FIG. 6), the lance w protrudes from the front of the plate-shaped raised portion 60, and the lance w protrudes from the front of the rear half 20b of the pole holding hole 20. A disc-shaped raised portion 6 forming the front end surface of the rear half member 2b, which is the peripheral portion of the side opening.
The front end surface of 0 is used as an engaging portion y, and the state is such that it is engaged there.

Therefore, the female fitting portion 5 formed on the first half member 2a and the male fitting portion 6 formed on the second half member 2b are shaped so that their fitting is somewhat effective. There is.

FIG. 7 shows the pole holding hole 20 of the pole holding member 2...
The contacts 3 are shown to be inserted into and held in the respective parts. The contact 3 is formed by bending and forming a metal plate, and has a pin-shaped part 30 that becomes a contact terminal on the front end side (left end side in the figure), and a channel-shaped part on the rear end side. Connection terminal part 3
1 is formed. A pair of lances w (engaging pieces), which are cut from a metal plate and protrude outward, are formed on both left and right sides of the intermediate body so as to face each other in the left and right directions.

In the illustrated embodiment, reference numeral 7 denotes a cap that is fitted into the open opening on the rear end side of the guide sleeve 1, and has a through hole in the shaft core portion through which the cord b is inserted. When assembled to the core connector A, it also serves as a cord detachment prevention device that holds the connected cord B so that it does not escape.

The pole holding member of the multicore connector according to the present invention configured as described above operates as follows.

As shown in FIGS. 4 and 5, the first half member 2a and the second half member 2b, which are molded separately, are connected to a female fitting part 5 and a male mold part molded at their abutting parts. When assembled into the pole holding member 2 by fitting into the fitting part 6, the notches 51, 51 provided in the cylindrical wall 50 forming the female fitting part 5 and the male part The protruding parts 61, 61 provided on the disc-shaped raised part 60 forming the fitting part 6 are positioned so that they fit into each other, and in this state, the female fitting part 5 and the male fitting part 5 are aligned. Assembly is performed by fitting the fitting portion 6 together.

At this time, the first half side 20a of the pole holding hole 20 of the first half member 2a after assembly and the pole holding hole 2 of the second half member 2b.
The fitting between the above-mentioned notch 51 and the overhang 61, in which the fitting is positioned so that the latter half side 20b of 0 is in a state where they are correctly continuous, can be visually observed from the outside until the final stage. It will be done in the state.

For this reason, unlike the previous positioning means by fitting the protrusion provided on the inner peripheral surface of the female fitting part with the groove provided on the outer peripheral surface of the male fitting part, it is not visible from the outside. Since the fitting is performed in the correct position, there is no need to force the fitting in a state where there is an error, and the male and female fitting parts 5 and 6 can be fitted correctly and smoothly. to be able to perform the following tasks.

Further, when the female fitting portion 5 and the male fitting portion 6 are fitted together, the cylindrical wall 5 forming the female fitting portion 5 is
0 is deformed to open in the radial direction due to the notches 51, 51 in a part of the circumferential direction. Even if the diameter is large, it will fit with strong push,
After fitting, the cylindrical wall 50 with its enlarged diameter tries to restore itself due to its elasticity and tightens.
Make the fit strong.

Therefore, when molding the female and male fitting parts 5 and 6, it is possible to mold the fitting parts 5 and 6 without requiring much precision, making the fitting work easy, and making it possible to form a state in which they are firmly connected after fitting. It becomes like this.

As explained above, the pole holding member in the multicore connector according to the present invention is formed into a plug shape from a synthetic resin material and held in the inner cavity of the guide sleeve 1. The member 2 is divided into the first half member 2a and the second half member 2b.
Separated and molded separately, and those first half members 2a
In the second half member 2b, a female fitting part 5 in which a cutout part 51 along the axial direction is formed in a part of the circumferential direction of the cylinder wall 50 is formed on one of the abutting parts, and on the other side, the fitting part 5 is molded. This is because the male fitting part 6 is formed by forming a protruding part 61 that fits into the aforementioned notch on the outer periphery of a disk-shaped raised part 60 that fits into the inner peripheral side of the wall 50. The female and male fitting portions 5 and 6 formed at the abutting portions of the first half member 2a and the second half member 2b of the pole holding member 2 are tightly fitted together without requiring much precision in shaping them. In addition, the positioning when fitting them together can be done in a state that can be seen from the outside until the final stage of fitting.
The fitted male and female fitting portions are elastically bound, thereby making it possible to firmly connect the front half member and the rear half member.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the conventional means, Fig. 2 is a longitudinal sectional side view of a multi-core connector implementing the present invention, Fig. 3 is a front view of the same, and Fig. 4 is a front view of the front half member of the pole holding member of the same. Fig. 5 is a perspective view of the latter half of the pole holding member as seen from the front side;
FIG. 6 is a cross-sectional plan view of the same pole holding member in a state before the first half member and the second half member are fitted together, and FIG.
The figure is a perspective view of the same contact as above. Explanation of drawing symbols, A...Multi-core connector, a...
Connector body, b...cord, c...body, w
...Lance, y...Engaging portion, 1...Guide sleeve, 2...Pole holding member, 2a...First half member, 2b
...Second half member, 20...Pole holding hole, 20a...First half side, 20b...Second half side, 21...Rear end surface, 22
...Front end surface, 3...Contact, 30...Pin-shaped part, 31...Connection terminal part, 40...Core wire, 5...
Female fitting part, 50...tube wall, 50a...portion,
500...Plane, 51...Notch, 6...Male fitting part, 60...Plate-shaped protuberance, 61...Protrusion, 62...Plane, 7...Cap.

Claims (1)

[Scope of utility model registration request] In the pole holding member 2 of a multicore connector, which is molded into a plug shape from a synthetic resin material and held in the inner cavity of the guide sleeve 1, the pole holding member 2 is attached to the front half member 2.
The first half member 2a and the second half member 2b are specially molded into two parts, and the first half member 2a and the second half member 2b have a cylindrical wall 50 at one of the butt parts.
A female fitting part 5 having a notch 51 along the axial direction is formed in a part of the circumferential direction, and the cylindrical wall 50 is formed on the other side.
A multi-core connector characterized in that a male fitting part 6 is formed on the outer periphery of a disk-shaped raised part 60 which fits into the inner circumferential side of the connector, and a protruding part 61 which fits into the aforementioned notch part is formed. Pole holding member.