JP3787031B2 - Multi-pole connector cable - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a multipolar connector cable, and more particularly to a multipolar connector cable for an information processing apparatus in which a cable drawing direction can be freely set.
[0002]
[Prior art]
In an information processing apparatus such as a personal computer, many I / O (Input / Output) cables are used to connect a computer body and peripheral devices such as a CRT monitor, a printer, and a scanner. Since these I / O cables need to transmit a lot of information in a short time, multi-core cables (for example, 15-core and 25-core) are generally used, and due to the need for equipment connection and compatibility. A multi-pole connector standardized by a certain standard (for example, D-Sub15 pin, D-Sub25 pin, etc.) is used.
[0003]
FIG. 7 shows an example of a connector portion of such a conventional multipolar connector cable 9. In the multipolar connector cable shown in the figure, a multipolar connector member 11 is disposed at one end of a connector body 50, and a protective member 25 for preventing disconnection of an internal wire due to a sudden bending of the multicore cable 30 from the other end. It is taken out protected.
[0004]
Inside the body 50, each wire corresponding to each pin of the connector member 11 is joined by a method such as soldering, and the connector member 11, the internal wire, the multi-core cable 30, the protection member 25, etc. are fixedly held. Therefore, it is integrally formed by, for example, insert molding or a method of screwing the cover member divided in the upper and lower directions.
[0005]
Further, in order to prevent inadvertent dropout of the connector after the connector cable is connected, both sides of the connector body are provided with dropout prevention means such as a locking screw 7 between the connector portion of the connected device.
[0006]
[Problems to be solved by the invention]
By the way, when such a multi-core connector cable is used, the larger the number of cores, the thicker the cable itself is, and the more difficult it is to bend. A space CL corresponding to the number of cores of the connector cable (allowable bending radius R) as shown in FIG. 8 is required in the vicinity of the portion in the direction of taking out the multi-core cable (usually the back side of the device).
[0007]
While such a space is a useless space that restricts the arrangement of equipment and invalidates the area that is originally effective, when the cable is forcibly bent without taking this space, the cable is configured inside the bent portion. Unreasonable pulling force and bending occurred in many wires, causing internal disconnection.
[0008]
As a method of reducing this space, for example, the direction of taking out the multi-core cable from the connector body is changed from the conventional direction, that is, from the direction perpendicular to the connector mounting surface to the horizontal direction (for example, the direction of the locking screw 7 in FIG. There is a method of configuring the connector cable by changing it or changing it in the direction of 45 degrees.
[0009]
However, with such a method, the situation around the connector of the peripheral device to be connected, such as the arrangement of adjacent connectors and the positional relationship with the surrounding cover member, the angle of the connector mounting surface, the processing of the locking screw, etc. is checked and confirmed. It was necessary to prepare and select a connector cable one by one.
[0010]
As means for dealing with such problems, for example, a method disclosed in Japanese Patent Application Laid-Open No. 50-88581 is known. This is because the spherical rotating body is integrally attached to the outer side of the cable sheath of the terminal portion of the multicore cable, and the portion of the connector cover that contacts the spherical rotating body is formed as a concave body that makes surface contact with the spherical rotating body. The axial direction can be freely changed with respect to the contact arrangement surface.
[0011]
In the known example, since the rotation coupling is formed by fitting the spherical surfaces, the orientation of the multicore cable relative to the connector cover can be freely changed. However, when this coupling is rotated to orient the multi-core cable in an arbitrary direction, each wire constituting the multi-core cable is swung around the core of the spherical rotating body in the connector cover.
[0012]
For this reason, every time the orientation direction of the cable is changed, the wire is swung in the connector cover, and as a result, there is a risk of disconnection from a connection portion (for example, a soldering portion) between the connector pin and each wire that is weakest to the external force in the connector. it was high. In addition, when there is no margin in the wire length in the cover, the situation of receiving a tensile force due to the orientation of the cable also occurs, so the length of each wire needs a margin that does not apply a tensile force even at the maximum orientation angle, This has contributed to an increase in the size of the entire connector.
[0013]
The present invention has been made in view of the above problems, and provides a multipolar connector cable that narrows the necessary space around the connector, improves the degree of freedom of device arrangement, and reduces the size of the connector. For the purpose.
[0014]
[Means for Solving the Problems]
In order to solve the above problems, in the multipolar connector cable according to the present invention, the first and second cover members that can be joined and fixed to each other, and the multipolar connector member that is held and held at one end of the first and second cover members And two substantially cylinders fitted and held rotatably in two holes formed opposite to the other ends of the first and second cover members with an axis connecting the two holes as a rotation axis. And a T-shaped rotating clamp having a flange portion. The T-shaped rotation clamp has a first communication hole penetrating the two substantially cylindrical flange portions, and a second communication communicating from an intermediate portion of the communication holes toward the T-shaped leg portion. The cable inserted from the second communication hole is gripped by the T-shaped rotation clamp at the communication hole portion. The plurality of wires constituting the cable are peeled off from the covering of the cable that bundles and protects the wires in the vicinity of the intersection of the second communication hole and the first communication hole, and passes through the first communication hole. A multipolar connector cable is constructed by being guided to the internal space of the connector formed by the first and second cover members and joined to predetermined pins of the multipolar connector member.
[0015]
In the multipolar connector cable configured as described above, the T-shaped rotation clamp that grips the cable grips the cable with the T-shaped leg, and configures the cable through the upper communication hole (first communication hole). Each wire to be guided is led into a connector cover formed by the first and second cover members. Each wire is joined to a predetermined pin of the connector member inside the connector cover.
[0016]
A substantially cylindrical flange portion is formed at two end portions (both ends of the first communication hole) of the T-shaped upper portion facing each other on the same axis, and the cylindrical flange portions serve as the first and second covers. The two holes are formed so as to be opposed to the member, and are fitted and held so as to be rotatable about an axis connecting the two holes as a rotation axis. For this reason, it is possible to arbitrarily change the orientation direction of the cable extending outward from the T-shaped rotation clamp according to the rotation of the T-shaped rotation clamp. Therefore, the space can be greatly reduced, and the degree of freedom for equipment arrangement can be increased.
[0017]
In addition, since the change in the orientation direction of the cable is achieved by the rotation of the rotation shaft of the T-shaped rotation clamp, the internal wire is pulled or bent (swung) with this rotation. There is nothing. Further, since the cable is gripped by the leg portion (the T-shaped lower part) of the T-shaped rotation clamp, even when the cable is pulled from the outside, the pulling force is applied to the cylinder of the T-shaped rotation clamp. It is received by the flange portion, and this pulling force does not act on the internal wire. Therefore, it is possible to provide a multipolar connector cable with a smaller connector shape and less risk of disconnection or breakage.
[0018]
In addition, at least one of the first and second cover members has conductivity, and the clamp portion that holds the cable of the T-shaped rotation clamp clamps the shield layer provided on the cable and has a T-shape. It is preferable that the substantially cylindrical flange portion of the rotating clamp and the clamp portion that clamps the shield layer of the cable are electrically connected and have conductivity.
[0019]
With this configuration, the entire connector cable can have a shielding effect, and since the connector member is sandwiched and held by the cover member, the cover member, the T-shaped rotation clamp, the shield layer of the cable It is possible to shield up to the mating connector member through the ground potential.
[0020]
Further, the T-shaped rotation clamp and the first and second cover members have a predetermined relative angle with the first or second cover member when the T-shaped rotation clamp is rotated about the rotation shaft. It is desirable to form so as to abut at a position and limit the rotation angle so as not to rotate further.
[0021]
With this configuration, the cable or wire is not subjected to excessive rotational force, and the load of the wire that receives twist in the rotating shaft of the rotating clamp and in the cover can be effectively limited. . The predetermined angle is an angle set in advance according to the application and type of the cable used or the connected device, and is preferably set between 45 degrees and 90 degrees, for example.
[0022]
The T-shaped rotation clamp has a flange portion that fits with the case member and a clamp portion that clamps the shield layer of the cable formed of an integral metal member, and an outer portion of the metal member excluding the flange portion. Is preferably molded integrally with a resin material.
[0023]
By configuring in this way, it is robust against the pulling force applied to the cable, and the shielding effect (electrical contact property, equipotentiality) can be ensured. In addition, the metal part except the flange part of the T-shaped rotation clamp is molded with a resin material, and the mold part and the cover part are in contact with each other so that the metal part and the cover do not rotate more than a predetermined angle. The member can be formed without complicating the shape of the member, and an excessive rotational force can be absorbed by the contact portion between the case and the mold without being applied to the cable or the wire.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the multipolar connector cable according to the present invention will be described with reference to the drawings. FIG. 1 is an external view (perspective view) of the multipolar connector cable 1, and FIGS. 2 and 3 are a front sectional view and a side sectional view. The multipolar connector cable is configured to have connector portions at both ends of the cable. However, since the description is duplicated, the following description will be made on one of these connector portions.
[0025]
First, in FIG. 1, this multipolar connector cable 1 has a multipolar connector member 11 such as a D-Sub 15 pin at one end and is fitted and held at the other end so as to be rotatable in the direction indicated by the arrow in the figure. The connector 2 includes a T-shaped rotation clamp 20 and a multi-core cable 30 connecting the connectors. Further, locking screws 7 are provided on both sides of the multipolar connector member 11 to prevent the connector joint from falling off.
[0026]
The cover 5 that forms the outer shape of the connector 2 is composed of first and second cover members 5a and 5b that are divided vertically at the center of the cover, and an example is shown in which both are formed of a conductive material. For example, it is preferable to use a molded product manufactured by aluminum die casting, metal press molding, or the like. In addition, instead of the metal material as described above, for example, it can be achieved by molding by injection molding using a conductive plastic or by depositing a metal thin film on the molded plastic material. Such a conductive cover is called a shield cover because it has a shielding effect against external noise.
[0027]
As shown in FIGS. 2 and 3, a multipolar connector member 11 is disposed and held at one end of the cover members 5a and 5b so that the flange portion 11a is sandwiched between the cover members 5a and 5b. A T-shaped rotation clamp 20 is fitted and held at the other end of the connector cover so as to be rotatable about an axis indicated by I in the drawing.
[0028]
Hereinafter, the T-shaped rotation clamp 20 will be described in more detail with reference to FIGS. 4 and 5. Among these, FIG. 5 shows the assembled state of the multicore cable 30 before overmolding with a resin material, the wires 35 constituting the multicore cable 30 and the cable clamp 21. FIG. 4 shows a state after overmolding with a resin material in the state of FIG.
[0029]
A T-shaped cable clamp 21 formed of a metal material and having substantially cylindrical flanges 21a and 21a at both ends on the same axis of the T-shaped upper portion is formed in a hollow cylindrical shape and is provided on a T-shaped leg portion. The multicore cable 30 is inserted through the second communication hole 21d, the cable is clamped at the end 21b, and the shield layer 31 and the cable clamp are bonded by pressure to be electrically connected.
[0030]
In the vicinity of the intersection of the T-shape, the insulation coating including the shield layer of the cable is peeled off, and the inner wires 35 are substantially cylindrical flanges provided at the left and right ends of the T-shape from the first communication hole 21c (center cylindrical portion). It is guided to the outside of the cable clamp 21 through 21a and 21a.
[0031]
Then, the subassembly of the T-shaped rotation clamp, in which the cable is clamped (the shield layer is crimped and joined) and the internal wire is taken out, has a substantially cylindrical shape at both ends as shown in FIG. It is overmolded with a resin material by insert molding or the like leaving the flange portions 21a and 21a.
[0032]
As shown in FIGS. 2 and 3, the T-shaped rotation clamp formed as described above is bonded to each corresponding pin of the connector member 11 by soldering or the like after terminal processing of each wire end. The substantially cylindrical flange portions 21a and 21a at both ends are fitted and held in circular holes 5c provided in the cover members 5a and 5b. The upper and lower cover members 5 a and 5 b are joined and fixed by screws 6 in order to sandwich and hold the T-shaped rotation clamp 20, the connector member 11, the locking screw 7, and the like.
[0033]
In this way, the T-shaped rotation clamp is configured to cover a plurality of wires connected to each pin of the multipolar connector member 11 through the first communication hole 21c having two flange ends opposed to each other on the same axis. , 5b is guided to the inner space of the shield cover 5 and the shield cover 5 and the cable 30 are electrically connected around the axis I connecting the centers of the two flanges as a rotation axis, and within a predetermined angle range. And are arranged so as to be relatively rotatable.
[0034]
By the way, this rotatable angle is preferably at least 45 degrees in order to achieve the reduction of the space required for bending the cable and the freedom of equipment arrangement. On the other hand, this rotation does not cause the internal wire to be swung in the cover as in the conventional case, such as pulling or bending, but because it is twisted in the T-shaped rotation clamp, the insulation layer deteriorates and the metal wire In consideration of fatigue and the like, it is preferably 90 degrees or less.
[0035]
In addition, the required rotation angle often varies depending on the application and type of the connector cable used or the peripheral device to be connected. Therefore, it is preferable that the pivotable angle is appropriately set within a range of 45 degrees to 90 degrees in consideration of these requirements.
[0036]
FIG. 6 shows an example in which the rotation angle limit is provided at ± 90 degrees around the perpendicular to the connector mounting surface. The rotation angle is limited by contacting the shield cover 5 and the resin mold portion 22 of the T-shaped rotation clamp 20. In other words, the shape of the T-shaped rotation clamp 20 including the shield cover 5 (cover members 5a and 5b) and the resin mold portion 22 is designed so that they come into contact with each other at such a set angle.
[0037]
Therefore, the set angle as described above can be achieved by appropriately changing the shape of both of them as required. In this embodiment, an example of setting the rotation angle of ± 90 degrees with respect to the central axis is shown. However, in this example, for example, one cover member (for example, the upper cover member in the figure) of the shield cover 5 is changed. It is also possible to configure so as not to rotate upward (that is, in a single swing).
[0038]
【The invention's effect】
As described above, in the multipolar connector cable according to the present invention, the first and second cover members that can be joined and fixed to each other, and the multipolar connector member that is sandwiched and held at one end of the first and second cover members, Two substantially cylindrical shapes that are fitted and held rotatably in two holes formed opposite to the other ends of the first and second cover members, with an axis connecting the two holes as a rotation axis. And a T-shaped rotation clamp having a flange portion. The T-shaped rotation clamp has a first communication hole penetrating the two substantially cylindrical flange portions, and a second communication communicating from an intermediate portion of the communication holes toward the T-shaped leg portion. A cable having a hole and inserted from the second communication hole is held by the T-shaped rotation clamp at the communication hole portion. The plurality of wires constituting the cable are peeled off from the covering of the cable that bundles and protects the wires in the vicinity of the intersection of the second communication hole and the first communication hole, and passes through the first communication hole. A multipolar connector cable is constructed by being guided to the internal space of the connector formed by the first and second cover members and joined to predetermined pins of the multipolar connector member.
[0039]
For this reason, it is possible to arbitrarily change the orientation direction of the cable extending outward from the T-shaped rotation clamp according to the rotation of the T-shaped rotation clamp with respect to the connector having the multipolar connector member. . Therefore, the space required around the multipolar connector can be greatly reduced according to the minimum bending radius of the cable, and the degree of freedom in equipment arrangement can be increased.
[0040]
In addition, since the change of the orientation direction of the cable is achieved by the rotation of the rotation shaft of the T-shaped rotation clamp, the cable is pulled inside the cover, for example, the inner wire is pulled or bent. There is no such thing as being shaken. Further, since the cable is gripped by the leg portion (the T-shaped lower part) of the T-shaped rotation clamp, even when the cable is pulled from the outside, the pulling force is applied to the cylinder of the T-shaped rotation clamp. It is received by the flange portion, and this pulling force does not act on the internal wire. Therefore, it is possible to provide a multipolar connector cable with a smaller connector shape and less risk of disconnection or breakage.
[0041]
At least one of the first and second cover members has conductivity, and the clamp portion that holds the cable of the T-shaped rotation clamp clamps the shield layer provided on the cable and also performs the T-shaped rotation. By configuring the substantially cylindrical flange part of the dynamic clamp and the clamp part that clamps the shield layer of the cable to be electrically connected and have conductivity, the entire connector cable can have a shielding effect. Through the cover member, the T-shaped rotation clamp, and the cable shield layer, the entire connector member can be shielded with the ground potential.
[0042]
Further, the T-shaped rotation clamp and the first and second cover members have a predetermined relative angle with the first or second cover member when the T-shaped rotation clamp is rotated about the rotation shaft. It is desirable to form so as to abut at a position and limit the rotation angle so as not to rotate further. With this configuration, the cable or wire is not subjected to excessive rotational force, and the load of the wire that receives twist in the rotating shaft of the rotating clamp and in the cover can be effectively limited. .
[0043]
In addition, the T-shaped rotation clamp is formed by forming a flange portion that fits into the case member and a clamp portion that clamps the shield layer of the cable with an integral metal member, and an outer portion of the metal member excluding the flange portion. Is preferably molded integrally with a resin material. By configuring in this way, it is robust against the pulling force applied to the cable, and the shielding effect (electrical contact property, equipotentiality) can be ensured. In addition, the metal part except the flange part of the T-shaped rotation clamp is molded with a resin material, and the mold part and the cover part are in contact with each other so that the metal part and the cover do not rotate more than a predetermined angle. The member can be formed without complicating the shape of the member, and an excessive rotational force can be absorbed by the mold portion without being applied to the cable or the wire.
[Brief description of the drawings]
FIG. 1 is an external view (perspective view) of a multipolar connector cable according to the present invention.
FIG. 2 is a front sectional view showing an internal configuration of a connector portion of the multipolar connector cable.
FIG. 3 is a side sectional view showing an internal configuration of a connector portion of the multipolar connector cable.
FIG. 4 is an explanatory view showing a T-shaped rotation clamp of the multipolar connector cable.
FIG. 5 is an explanatory view showing an internal structure of the T-shaped rotation clamp.
FIG. 6 is an explanatory view for explaining a rotating action of the multipolar connector cable.
FIG. 7 is an external view of a conventional multipolar connector cable.
FIG. 8 is an explanatory diagram for explaining a state in which a conventional multipolar connector cable is connected to a CRT monitor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Multipolar connector cable 5a, 5b 1st and 2nd cover member 5c Hole 11 Multipolar connector member 20 T-shaped rotation clamp 21a T-shaped rotation clamp substantially cylindrical flange part 21b T-shaped rotation Clamping portion 21c of dynamic clamp First communication hole 21d Second communication hole 30 Cable 31 Cable shield layer 35 Wire

Claims (3)

First and second cover members that can be joined and fixed to each other;
A multipolar connector member sandwiched and held at one end of the first and second cover members;
Two substantially cylindrical shapes that are fitted and held so as to be rotatable about an axis connecting the two holes in two holes formed opposite to the other ends of the first and second cover members. A T-shaped rotation clamp having a flange portion,
The T-shaped rotation clamp has a first communication hole that passes through the two flange portions, and a second communication hole that communicates from an intermediate portion of the communication hole toward the T-shaped leg portion. And
The cable inserted from the second communication hole is gripped by the T-shaped rotation clamp at the second communication hole, and a plurality of wires constituting the cable are connected to the second communication hole and the second communication hole. The cable covering for bundling and protecting the wires in the vicinity of the intersection with the first communication hole is peeled off, led to the internal space formed by the first and second cover members through the first communication hole; A multipolar connector cable, wherein the multipolar connector cable is configured to be joined to predetermined pins of the multipolar connector member. At least one of the first and second cover members has conductivity,
The clamp part that holds the cable of the T-shaped rotation clamp clamps a shield layer provided on the cable,
The multipolar connector cable according to claim 1, wherein the flange portion and the clamp portion of the T-shaped rotation clamp are electrically connected to each other and have conductivity. The T-shaped rotation clamp and the first and second cover members are
The T-shaped rotation clamp is formed so as to abut against the first or second cover member at a predetermined relative angular position when the rotation shaft is rotated about the rotation axis, and to limit the rotation angle. The multipolar connector cable according to claim 1, wherein the multipolar connector cable is characterized in that:

Images