JPH0766839B2 - Device to prevent the cord from coming off in the connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a connector assembled by connecting a cord to a connector body, so that the connected cord is firmly attached to the connector body so as not to come out of the connector body. The present invention relates to an improvement of a cord retaining device that is connected to a cord.

[Prior Art] Conventionally, a cord retaining device in a connector is usually formed of a metal material or a synthetic resin material in a ring shape having a split in a circumferential direction or a ring shape without split. The cord clamp is inserted into the outer circumference of the outer skin at the end on the connection side of the cord, and the inner circumference of the cord clamp is integrally crimped to the outer circumference of the outer skin of the cord by pressing the cord clamp from the outer circumference. By locking the outer peripheral side of this cord clamp to the locking portion provided in the inner cavity of the connector body on the cord outlet side, the cord is integrally attached to the connector body, When the cord is pulled while it is connected to the mating connector, it does not come out of the connector body.

In addition, since the connector is used to connect office automation related equipment such as personal computers and word processors, as well as video and audio equipment, the generated EMI noise is
As a measure to prevent interference with other electronic devices, a core type filter (ferrite core) made by molding soft ferrite into a ring shape should be assembled and attached as it is inserted around the outer circumference of the cord connected to the connector body. It has become to.

[Problems to be Solved by the Invention] In the above-mentioned conventional means, in order to integrally attach the cord to the connector body, a cord clamp crimped on the outer periphery of the cord is integrally locked to the connector body. Therefore, it is necessary to mount the locking portion that engages with the cord clamp on the connector main body, and it is troublesome to mount the locking portion on the connector main body.

Moreover, if a core type filter is installed in the connector body as a measure against the EMI nozzle, the assembly part of the core type filter must be installed in the connector body together with the locking part of the cord clamp. Not only that, but the manufacturing of the connector body is made more difficult. Moreover, there is a problem that the connector body to be formed becomes large due to both the assembly portion of the core type filter and the locking portion of the cord clamp that are mounted on the connector body.

[Purpose] The present invention has been made in order to solve the above-mentioned problems that have occurred in the conventional means, and a core type filter to be attached to a connector body has a cord clamp integrally locked to the connector body. The cord clamp and the core type filter can be assembled to the connector body by a remarkably simple mechanism by being used as an engaging part and an assembling part that accommodates and holds the cord clamp. It is an object of the present invention to provide a new means that allows both a cord clamp and a core type filter to be assembled without making the connector body too long.

[Means for Reserving to Solve the Problems] In the present invention, as means for achieving the above-mentioned object, the connector main body is provided in the inner cavity of a tubular body integrally provided on the rear end side of the connector main body. The core-type filter inserted into the outer periphery of the cord to be connected to the cable is stored and held in a posture in which the axis of the cord is in the front-rear direction, and the core-type filter is inserted from the outer periphery to the rear end side of the center hole through which the cord passes. The outer peripheral side of a cord clamp formed in a sheath tubular shape whose inner peripheral side is reduced in diameter by pressure is press-fitted so that the inner peripheral side is in pressure contact with the outer periphery of the cord, and the cord clamp is crimped to the outer periphery of the cord. A cord retaining device for a connector is proposed in which a core type filter is coupled with the cord type clamp and the cord clamp is held in the body together with the core type filter. It is a thing.

Example Next, an example will be described in detail with reference to the drawings.

FIG. 1 is a plan view of a connector A for carrying out the present invention, and FIG. 2 is a cross-sectional plan view of the same. In FIG. 1, 1 is a connector body, 2 is a cord, 3 is a cord clamp, and 4 is a core type filter. Show.

The connector body 1 is a pole holding member 10 made of a synthetic resin material.
A plurality of contacts 11 made of a metal material to serve as connection terminals.
Are arranged side by side and held, and a metal sleeve 12 serving as an outer pole is fitted on the outer peripheral side of the pole holding member 10, and the metal sleeve
It is a normal one which is constructed by assembling and mounting a body 13 as a knob on the outer periphery of the rear end side (the right end side in FIG. 2) of 12. Then, as shown in FIG. 6, its body 13 is formed in a tubular shape having small diameter portions at both front and rear ends to have a small diameter, and the metal sleeve 12 and the pole holding member 10 are provided at the rear end side. Main part that is assembled so as to be integrally continuous to the outer periphery
130 and as shown in FIG. 7, the front half side is formed into a cylindrical shape having a large diameter and the rear half side is formed into a cone shape, and the front half side thereof can be freely attached to and detached from the outer periphery of the rear end side of the main body 130. By being fitted, the main body 130 has a cap portion 131 attached to the rear end side thereof in a cap shape, and a cord outlet 132 for pulling out the cord 2 to the outside is formed at the rear end portion of the lid portion 131. It is shaped.

The cord 2 is an ordinary one in which a plurality of core wires 20 ... Is covered with an outer skin 21, but in this example, the core wires 20 and 20 covered with the inner skin are juxtaposed in two lines and covered with the outer skin 21 and have a rectangular cross section. It is formed into a parallel cord. And
The front end side (the left end side in FIG. 2), which is the connection end, is inserted into the body 13 through the cord outlet 132 provided on the rear end side of the body 13 of the connector body 1 described above, and the outer cover 21 on the front end side is inserted. By connecting the tip end of each core wire 20 that has been stripped and exposed to the rear end portion of the contact 11 held on the pole holding member 10 through the connection terminal 200, the core wire 20 is connected to the connector body 1. There is.

The cord clamp 3 is made of synthetic resin or metal,
The sheath is formed in a cylindrical shape having a central hole 30 for inserting the cord 2 in the shaft core portion, but as shown in FIGS. 8 to 11, one end side in the axial direction is expanded in the circumferential direction. A bulging flange 31 is provided, and a center hole 30 for inserting the cord 2 is inserted.
As shown in FIG. 10, a rack-shaped engaging tooth portion 30a for engaging with the outer peripheral surface of the outer skin 21 of the cord 2 is formed on the inner peripheral surface of the. Further, the cord clamp 3 has a dividing surface along the axial direction, as shown in FIG. 12 and FIG.
It is divided into two pieces 3a and 3b that open and close like a shell, and these pieces 3a and 3b are connected by a hinge 32.

Then, as shown in FIG. 15, the cord clamp 3 is covered with the divided pieces 3a and 3b which are divided into two so as to sandwich the outer periphery of the outer cover 21 of the cord 2 from above and below, and the divided pieces 3a.
・ 3b is closed as shown in FIG. 16, so that the butted center hole 30 encloses the outer periphery of the outer skin 21 of the cord 2 as shown in FIG. Then, from this state, as shown in FIG. 18, the cord clamp 3 is provided with a flange portion from one axial end of the core type filter 4 to the center hole 40.
31 is pressed into the core type filter 4 until it abuts against the end face of the core type filter 4, and then the cord clamp 3 is compressed so as to reduce the diameter from the outer peripheral side to the inner peripheral face of the center hole 30. The engagement tooth portion 30a provided is crimped to the outer periphery of the outer cover 21 of the cord 2.

The core type filter 4 is an ordinary one formed by molding soft ferrite into a ring shape, and the center hole 40 of the core type filter 4 has a hole diameter covered with the outer circumference of the outer cover 21 of the cord 2 as described above. The outer diameter of the outer cover is smaller than that of the outer cover, and the cord clamp 3 in that state is press-fitted to the cord clamp 3 so as to perform the above-described crimping. Then, the core type filter 4 has a second
As shown in the figure, the main body 130 of the body 13 of the connector body 1
By inserting into the inside and setting the lid part 131 to the main body part 130, the main body part 130 is held in the inner cavity of the body 13 of the connector body 1.

The body 13 provided on the rear end side of the connector body 1 described above is provided so as to cover the outer periphery of the connection end portion of the cord 2 connected to the connector body 1, but as shown in FIG. The connection side end of the cord 2 is housed in the body 13 together with the core type filter 4 fitted on the outer periphery thereof, so that the core type filter 4 also serves as a storage chamber. I am doing it. In addition, the lid portion 131, which is attached to the rear end side of the main body portion 130 of the body 13 in a cap shape, has a second end on the rear end side of the central hole 40 of the core type filter 4 housed in the main body portion 130. As shown in the figure, when the cord clamp 3 is press-fitted and fitted, its main body part
By attaching the lid portion 131 to the rear end side of the 130, the rear end surface of the collar portion 31 of the cord clamp 3 is pressed by the inner end surface of the lid portion 131, and the cord clamp 3 is inserted into the core type filter 4.
Together with the connector body 1 can be integrally coupled.

In the illustrated embodiment, 133 ... Engaging projections 100 provided on the outer peripheral surface of the pole holding member 10 on the front end side of the main body portion 130 of the body 13 that is fitted to the outer periphery of the pole holding member 10.
Engaging holes formed so as to fit with the engaging holes 13 formed in the lid portion 131 on the outer periphery of the rear end side of the main body portion 130 of the body 13.
It is an engaging projection provided so that 5 can be fitted.

The embodiment apparatus configured as described above operates as follows.

When connecting the cord 2 to the connector body 1 and assembling it into the connector A, first, the lid portion 131 of the body 13 of the connector body 1 and the core type filter are preliminarily provided on the outer periphery of the connection end side of the cord 2 connected to the connector body 1. 4 is inserted and inserted, and in this state, the tip end side of each core wire 20 of the cord 2 is connected to the rear end side of the contacts 11 held by the pole holding member 10 of the connector body 1. Then, in this state, the metal sleeve 12 of the connector main body 1 and the pole holding member 10 held by the metal sleeve 12 are attached to the outer peripheral side of the body from the front end side thereof.
The main body part 130 of 13 is fitted and inserted, and the engagement hole 133 of the main body part 130 is engaged with the engagement protrusion 100 provided on the pole holding member 10, thereby the main body part 130.
Are assembled and coupled to the connector body 1.

Next, from this state, the main body part of the body 13 to which the core type filter 4 previously fitted on the outer periphery of the cord 2 is joined
Insert it into the lumen of 130. Then, in this state, at the portion pulled out from the rear end of the center hole 40 of the core type filter 4 of the cord 2, as shown in FIG. 15 to FIG. The divided cord clamp 3 is covered with the collar portion 31 facing backward (to the right in FIG. 2), and the tip side of the cord clamp 3 in that state is
As shown in FIG. 24, the core type filter 4 is pressed into the rear end of the center hole 40. This allows the cord clamp 3
Is a state in which the central hole 30 formed on the inner peripheral surfaces of the divided pieces 3a and 3b that have been closed together has a reduced diameter, is crimped onto the outer peripheral surface of the cord 2, and is integrally engaged with the cord 2. Becomes

Next, when this state is reached, the lid 131 of the body 13 previously fitted into the cord 2 is replaced with the main body 130 of the body 13.
, And the engaging hole 134 provided therein is fitted into the engaging protrusion 135 formed on the main body 130 of the body 13 to integrally join the lid 131 to the main body 130.

As a result, the lid 131 has the cord clamp 3 on its inner surface.
The rear end face is pressed, and the cord clamp 3 and the core type filter 4 are integrally connected to the connector body 1 and assembled.

Next, FIG. 20 to FIG. 25 show a modified example of the cord clamp 3.

The cord clamp 3 in this example corresponds to the case where the cord 2 connected to the connector body 1 is a round cord. The cord clamp 3 in this example is divided into two divided pieces 3a and 3b by the divided surface along the axial direction, and that they are connected to each other by a hinge 32 so as to be openable and closable in a shell-like manner. Although it is the same as the example shown in FIGS. 8 to 11, the central hole 30 forming the engaging tooth portion 30a on the inner peripheral surface corresponds to the cord 2 which is a round cord to be held in its inner cavity. Thus, the cord clamp 3 of the example shown in FIGS. 8 to 11 is formed in an elliptical shape in which the shorter diameter side is somewhat longer than the central hole 30.

Next, FIGS. 26 to 38 show another embodiment of the cord clamp 3. The cord clamp 3 in this example is
The divided pieces 3a and 3b in the above-mentioned example are formed separately, and the hinge 32 that connects them is omitted, and the rest of the configuration except this point is shown in FIG. 20 to FIG. The configuration of the example shown in FIG. 23 is the same as that of the example shown in FIG. 23. The components having the same effects are denoted by the same reference numerals, and detailed description thereof will be omitted.

Next, FIGS. 39 to 44 show another embodiment of the cord clamp 3.

In this example, while the example shown in FIG. 26 to FIG. 38 is intended for the round cord, the central hole 30 is flattened so as to be adapted to the case where the flat cord is intended. The remaining configuration except this point is the same as the example shown in FIG. 26 to FIG. 38, and the same reference numerals are used for the components having the same effect for the unchanged configuration. Is attached and detailed description is omitted.

Next, FIGS. 45 to 57 show a further different embodiment of the cord clamp 3.

In the cord clamp 3 of this example, when the two split pieces 3a and 3b split by the split surface along the axial direction are connected by a hinge 32 in a shell-like manner so that the hinge 32 can be opened and closed,
This is an example in which it is provided on the side of the flange portion 31 of each of the divided pieces 3a and 3b, and is opened and closed with a rotation axis line in a direction orthogonal to the divided surface. The rest of the configuration except this point is as described above. The configurations are the same as those of the respective embodiments, and the components having the same effects are denoted by the same reference numerals and detailed description thereof will be omitted.

Thus, when the cord clamp 3 of this embodiment is crimped to the outer peripheral surface of the outer skin 21 of the cord 2 connected to the connector body 1, the cord clamp 3 is attached to the end of the connecting cord 2 on the connecting side.
As shown in FIG. 55, the space between the pair of hinges 32, 32 of the cord clamp 3 in the expanded state is preliminarily fitted and set in the state shown in FIG. Connection work and body for contact 11 of…
Assembly work of 13 main body parts 130 and core type filter 4
After completing the assembling work, the core type filter 4 to code 2
When the cord is pulled out, the cord clamp 3 is slid with respect to the cord 2 so that the two divided pieces 3a and 3b are closed and held on the outer peripheral surface of the outer skin 21 of the cord 2 at a predetermined position. They are joined together, and as shown in FIG. 49, they are press-fitted into the rear end of the center hole 40 of the core type filter 4 so that they are fitted together.

Next, FIGS. 58 to 63 show a modification of the above-described embodiment.

In this embodiment, the divided pieces 3a and 3b of the cord clamp 3 formed by dividing the cord clamp into two halves are joined by hinges 32 and 32 provided at the end portion on the side where the collar portion 31 is provided. The configuration of the divided pieces 3a and 3b itself is the same as that of the example shown in FIGS. 45 to 58, but the cord 2 connected to the connector body 1 is a flat cord. This is an example of forming a flat shape so as to adapt to the case.

When the cord clamp 3 of this example is also crimped to the cord 2, the space formed by the pair of hinges 32, 32 is previously attached to the cord 2 in the unfolded state as shown in FIG. It is necessary to insert it. In addition,
Although not shown in the drawing, the cord clamp 3 is not divided into two parts or three parts by a division surface along the axial direction, and is made of a flexible material so that it is attached to the shaft core portion. When the shaft 2 is formed in a single cylindrical shape having a central hole 30 through which the cord 2 penetrates, the central hole 30 through which the cord 2 penetrates through the shaft core is made of a metal material or a synthetic resin material having a spring property.
A core-type filter 4 formed into a cylindrical shaft having
A suitable number of slit-shaped tears along the axial direction that allow the bending of the outer peripheral side to the reduced diameter side by pressing from the outer peripheral side are provided in the portion to be press-fitted into the center hole 40 of the cord 2 and fitted into the outer periphery of the cord 2. In such a state, the inner peripheral surface of the center hole 30 may be pressed onto the outer periphery of the outer skin of the cord 2 by press fitting the center hole 40 of the core type filter 4.

[Effects of the Invention] As described above, the device for preventing the cord from coming off in the connector according to the present invention is provided in the inner cavity of the tubular body 13 integrally provided on the rear end side of the connector body 1, and in the connector body 1. The core type filter 4 which is inserted into the outer periphery of the cord 2 to be connected to store and holds the core is provided at the rear end side of the center hole 40 of the cord clamp 3 and the outer periphery of the cord clamp 3 in which the inner periphery side is fitted to the outer periphery of the cord 2. Since the cord clamp 3 is press-fitted, the cord clamp 3 is press-fitted onto the outer periphery of the cord 2 and is integrally coupled with the cord clamp 3 to form a locking portion and an assembly portion of the cord clamp 3. The cord clamp 3 and the core type filter 4 can be assembled to the connector body 1 by a remarkably simple mechanism, and the cord clamp 3 and the core type filter 4 can be attached to the connector body 1. Person and so assembled as short as the length of the cord clamp 3 min.

[Brief description of drawings]

1 to 19 show a first embodiment of the present invention.
The figure is a plan view of the entire connector body for carrying out the present invention, FIG. 2 is a vertical side view of the same, FIG. 3 is a bottom view of the same, and FIG.
The figure is a front view of the same as above, a partially cutaway rear view of the same as that of FIG. 5, FIG. 6 is a perspective view of a main body portion of the same body, and FIG. 7 is a perspective view of a lid portion of the same body as above. The figure shows a side view of the same cord clamp, FIG. 9 is a rear view of the same cord clamp, FIG. 10 is a vertical side view of the same cord clamp, FIG. 11 is a front view of the same cord clamp, and FIG. 12 is the same as above. Fig. 13 is a plan view of the cord clamp in an unfolded state, Fig. 13 is a side view of the cord clamp in the same state as above, Fig. 14 and Fig. 13 is a rear view of the cord clamp in the above condition, and Fig. 15, Fig. 16, Fig. 17 and Fig. 17 are the same. Same as above, an explanatory view of the process of fitting the cord clamp to the outer peripheral surface of the cord, FIG. 18 is a vertical sectional side view of the cord clamped to the outer peripheral surface of the cord, and FIG. 19 is a front view of the same. . 20 to 25 show a modified example of the cord clamp of the same connector, and FIG. 20 is a side view of the cord clamp.
FIG. 21 is a rear view of the same cord clamp, FIG. 22 is a vertical side view of the same cord clamp, FIG. 23 is a front view of the same cord clamp, and FIG. 24 is crimped to the outer peripheral surface of the cord of the same cord clamp. FIG. 25 is a vertical sectional side view of the same state, and FIG. 25 is a front view of the same cord clamp as above. FIGS. 26 to 38 show another embodiment of the cord clamp in the same connector, FIG. 26 is a side view of the cord clamp, FIG. 27 is a rear view of the same cord clamp, and FIG.
Figure is a vertical side view of the same cord clamp, Figure 29 is a front view of the same cord clamp, Figure 30 is a vertical side view of the same cord clamp in the unfolded state, and Figure 31 is a plan view of the same cord clamp as above. , Fig. 32 is a side view of the same cord clamp as above, Fig. 33 is a front view of the same cord clamp as above, and Figs. 34, 35 and 36 are the outer cords of the above cord clamp. FIG. 37 is an explanatory side view of the fitting process, FIG. 37 is a vertical sectional side view of the cord of the same cord clamped on the outer peripheral surface of the cord, and FIG. 38 is a partially cutaway front view of the cord clamp of the same cord clamp. 39 to 44 show a modified example of the cord clamp in the above embodiment, FIG. 39 is a side view of the cord clamp, FIG. 40 is a rear view of the same, FIG. 41 is a vertical side view of the same, FIG. 42 is a front view of the above cord, FIG. 43 is a vertical cross-sectional side view of the cord of the cord clamped on the outer peripheral surface, and FIG. 44 is a partially cutaway front view of the cord clamp of the same cord. 45 to 57 show further different embodiments of the cord clamp in the same connector, FIG. 45 is a side view of the cord clamp, FIG. 46 is a rear view of the same cord clamp, and FIG. 47 is the same cord clamp. FIG. 48 is a front view of the cord clamp of the same as above, FIG. 49 is a vertical side view of the cord clamp of the same as above, FIG. 50 is a plan view of the cord clamp of the same as above, and FIG. Same as above, side view of the above cord clamp, FIG. 52 is a front view of above cord clamp, same as above, FIG. 53 and FIG. 54, and FIG.
Fig. 55 is an explanatory view of the process of fitting the cord clamp to the outer peripheral surface of the cord, Fig. 56 is a vertical cross-sectional side view of the cord clamp of the same cord clamped to the outer peripheral surface of the cord, and Fig. 57 is the same state as above. It is a partially broken front view. 58 to 63 show a modification of the cord clamp of the above-mentioned embodiment, FIG. 58 is a side view of the cord clamp, and FIG.
The figure shows the rear view of the same cord clamp, Fig. 60 shows the vertical side view of the same cord clamp, Fig. 61 shows the front view of the same cord clamp, and Fig. 62 shows the cord clamped on the outer peripheral surface of the same cord clamp. Fig. 63 is a vertical sectional side view, and Fig. 63 is a partially cutaway front view of the above state. Description of reference numerals A ... Connector, 1 ... Connector body 10 ... Electrode holding member, 11 ... Contact 12 ... Metal sleeve, 13 ... Body 100 ... Engaging protrusion, 130 ... Main body 131 ... Lid, 132 ... Cord outlet 133 … Engagement hole, 134… Engagement projection 135… Engagement hole, 2… Cord 20… Core wire, 21… Outer skin 200… Connection terminal, 3… Cord clamp 3a ・ 3b… Dividing piece, 30… Center hole 30a… Engagement Tooth part, 31 ... Collar part 32 ... Hinge, 4 ... Core type filter 40 ... Center hole

Claims (1)

[Claims] 1. A core type filter 4 fitted into the outer periphery of a cord 2 to be connected to the connector body 1 is inserted into the inner cavity of a cylindrical body 13 integrally provided on the rear end side of the connector body 1. Is stored and held in the front-rear direction, and is formed at the rear end side of the central hole 40 through which the cord 2 of the core type filter 4 penetrates so as to have a cylindrical sleeve shape in which the inner peripheral side is reduced in diameter by pressure from the outer peripheral side. The outer peripheral side of the cord clamp 3 is press-fitted so that the inner peripheral side of the cord clamp 3 is in pressure contact with the outer periphery of the cord 2, and the cord clamp 3 is crimped to the outer periphery of the cord 2 and coupled to the core type filter 4. The body of the cord clamp 3 together with the core type filter 4
Device to prevent the cord from coming off in the connector that is retained inside 13.