CN115441266A

CN115441266A - Electric connector unit

Info

Publication number: CN115441266A
Application number: CN202210620065.0A
Authority: CN
Inventors: 沈中桓
Original assignee: Tyco Electronics Japan GK
Current assignee: Tyco Electronics Japan GK
Priority date: 2021-06-04
Filing date: 2022-06-02
Publication date: 2022-12-06
Also published as: JP2022186344A; DE102022114198A1; KR20220164445A

Abstract

Provided is an electrical connector unit having a more suitable electromagnetic shield for electrically shielding a cable and a terminal connected to the cable. An electrical connector unit is provided with a connector and a cable connected to the connector, wherein the cable includes an inner cable bundle including a plurality of inner cables, a cable shield, and an insulating covering member surrounding the inner cable bundle and the cable shield, the connector includes a housing case and a connector shield provided in the housing case, and a linear shield extending from the cable shield as a part of the cable shield is attached to the connector shield.

Description

Electric connector unit

Technical Field

The present disclosure relates to an electrical connector unit. In particular, the present disclosure relates to an electrical connector unit having an electrically connected cable.

Background

Patent document 1 discloses a multipolar L-type connector for connecting a multicore cable to an electric device.

In the connector of the present invention, an electromagnetic shielding structure is provided to electrically shield a cable mounted on the connector and a terminal provided on the connector, in order to suppress radiation of electromagnetic waves to the outside or intrusion of electromagnetic waves from the outside due to signals transmitted to an electric device.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2018-45835.

Disclosure of Invention

Problems to be solved by the invention

The present inventors have noted that problems to be overcome in the structure of the electromagnetic shield of the conventional connector exist, and have found that it is necessary to take measures against the problems. Specifically, the following problems have been found.

For example, in the connector described in patent document 1, an outer conductor surrounding an outer peripheral side of an inner cable is electrically connected to a shield member provided in a connector housing having a terminal therein. In connection, the end of the insulating film covering the outer periphery of the outer conductor is removed, the end of the outer conductor is entirely folded back to the outside, and the copper tape is wound around the folded-back portion to perform termination processing of the cable. That is, in the terminal processing, the folded-back outer conductor is directly positioned on the insulating film. The shielding member is crimped or pressed against such a terminal processing portion, whereby the outer conductor is electrically connected to the shielding member.

However, since the insulating film of the cable used in the connector is generally formed of a heat-shrinkable material that shrinks with an increase in temperature, the outer diameter of the cable may decrease due to heat generation associated with operation of the electric device. Therefore, in connection by crimping or pressing the outer periphery of the cable as described above, there is a concern that contact failure may occur due to a reduction in the outer diameter of the cable caused by heat generation from the electric device, and the function of the electromagnetic shield may be impaired.

The present disclosure has been made in view of the above problems. That is, a main object of the present disclosure is to provide an electrical connector unit having a configuration of a more appropriate electromagnetic shield for electrically shielding an electrical cable and a terminal connected to the electrical cable.

Means for solving the problems

In order to achieve the above object, the present disclosure provides an electrical connector unit including a connector and a cable connected to the connector, the cable including an inner cable bundle including a plurality of inner cables, a cable shield, and an insulating coating member surrounding the inner cable bundle and the cable shield, the connector including a housing case and a connector shield provided in the housing case, and a linear shield drawn out from the cable shield as a part of the cable shield being attached to the connector shield.

ADVANTAGEOUS EFFECTS OF INVENTION

The electrical connector unit according to the present disclosure realizes a more suitable configuration of an electromagnetic shield for electrically shielding an electrical cable and a terminal connected to the electrical cable.

More specifically, in the electrical connector unit according to the present disclosure, the electromagnetic shield can be configured by attaching the linear shield drawn out from the cable shield provided in the cable to the connector shield provided in the housing case of the connector. Therefore, the cable shield and the connector shield are connected without directly interfering with the outer diameter of the cable, and it is possible to more suitably prevent the occurrence of a connection failure due to a change in the outer diameter dimension of the cable.

Drawings

Fig. 1 is a perspective view schematically showing an electrical connector unit according to an embodiment of the present disclosure.

Fig. 2 is a sectional view schematically showing a cable according to an embodiment of the present disclosure.

Fig. 3 is an exploded perspective view schematically showing an electrical connector unit according to an embodiment of the present disclosure.

Fig. 4 is a perspective view schematically showing a state in which a connector shield and a wire shield of an electrical connector unit according to an embodiment of the present disclosure are connected.

Fig. 5A is a perspective view schematically showing a state before the connection of the connector shield and the wire shield of the electrical connector unit according to the embodiment of the present disclosure.

Fig. 5B is a perspective view schematically showing a state in which the connector shield and the wire shield of the electrical connector unit according to the embodiment of the present disclosure are connected.

Fig. 6 is a perspective view schematically showing a state in which a connector shield and a wire shield of an electrical connector unit according to an embodiment of the present disclosure are connected.

Fig. 7A is a perspective view schematically showing a configuration of an electromagnetic shield before fitting between a connector according to an embodiment of the present disclosure and a device connector.

Fig. 7B is a perspective view schematically showing a configuration of the electromagnetic shield after the connector according to the embodiment of the present disclosure is fitted to the device connector.

Detailed Description

Hereinafter, an electrical connector unit according to an embodiment of the present disclosure will be described in more detail with reference to the drawings. The various elements in the drawings are shown schematically and illustratively for the purpose of illustrating the disclosure, and may differ from material to material in appearance or size ratio, etc.

In the following description, terms indicating a specific direction or position are used as necessary. However, these terms are used to facilitate understanding of the invention with reference to the drawings, and the technical scope of the present disclosure is not limited by the meanings of these terms. In addition, the same reference numerals in the drawings denote the same or equivalent parts.

Additionally, descriptions of illustrative versions of the present disclosure are intended to be read in connection with the accompanying drawings (which are to be considered as part of the described descriptions). In the description relating to the versions of the present disclosure disclosed in the specification of the present application, the reference to direction or orientation is only for convenience of description and is not intended to limit the scope of the present disclosure. Relative terms such as "below," "above," "horizontal," "vertical," "upper," "lower," "top," "bottom," and derivatives thereof, as well as "horizontally," "downwardly," "upwardly," and the like, should be construed to refer to the orientation as then described or as shown. The relative terms are used for convenience of description only, and it is not necessary to configure or operate the apparatus in a specific direction unless otherwise explicitly described. In addition, terms such as "mounting", "attaching", "connecting", "coupling", and "mutual connection" and similar terms are used to describe a relationship in which structures are directly or indirectly fixed or mounted to each other through an intermediary member, or a movable or rigid mounting or a relationship thereof, unless otherwise explicitly described. Further, the features or benefits of the present disclosure are exemplified by reference to preferred versions. Such modes are described in sufficient detail to enable those skilled in the art to practice the present disclosure. In addition, it is to be understood that other styles can be utilized and that process, electrical, or mechanical changes can be made without departing from the scope of the present disclosure. Thus, the disclosure is expressly not limited to the preferred versions (alone or in combination with other features) exemplifying the non-limiting combination of features contemplated.

Features of the present disclosure relate to the construction of electromagnetic shields in electrical connector units. Here, in order to grasp the entirety of the electrical connector unit, an outline of the electrical connector unit will be described below with reference to the drawings.

Fig. 1 is a perspective view schematically showing an electrical connector unit 1000 according to an embodiment of the present disclosure. The electrical connector unit 1000 includes, as main constituent elements, a connector 100 and a cable 200 connected to the connector 100. The electrical connector unit 1000 is also configured to include a device connector 300 provided in a device. The device connector 300 is provided in a device (not shown) and is combined with the connector 100.

In the following description, the combined direction of the connector 100 and the device connector 300 is referred to as the "vertical direction", and the connector 100 is disposed at the upward position of the device connector 300 disposed at the downward position in the vertical direction.

In addition, "unit" in the present disclosure corresponds to a composite product or a combined product or the like having a plurality of constituent elements. Therefore, the electrical connector unit 1000 of the present disclosure can correspond to an electrical connector composite product or an electrical connector composite product configured to include at least the cable 200, the connector 100 attached to the end of the cable 200, and the device connector 300 combined with the connector 100.

In fig. 2, a cross-sectional view of a cable 200 according to an embodiment of the present disclosure is schematically shown. The cable 200 includes an inner cable bundle 240 including a plurality of inner cables 230, a cable shield 220, and an insulating covering member 210 (or covering member) surrounding the inner cable bundle 240 and the cable shield 220. As illustrated, each of the plurality of inner cables 230 can be formed by coating the outer periphery of a conductor 231 such as a pure copper wire or a tinned copper wire with an insulating inner cable coating film 232. The plurality of inner cables 230 constitute an inner cable bundle 240, and the outer periphery of the inner cable bundle 240 is surrounded by the conductive cable shield 220. The covering member 210 covers the outer circumference of the cable shield 220, defining the outer circumference of the cable 200. The related covering member 210 can also be referred to as a cable sheath.

The covering member 210 is formed of an insulating material, and if the advantage of the cable wiring is taken into consideration, the covering member is preferably a flexible insulating material. For example, the covering member 210 may be formed of polyvinyl chloride (PVC), polypropylene, a fluoropolymer, polyethylene, a polymer of the same kind as these, or the like.

Fig. 3 schematically illustrates an exploded perspective view of an electrical connector unit 1000 according to an embodiment of the present disclosure. The connector mainly includes a housing case 110 and a connector shield 120 provided in the housing case 110. In addition, the connector of the present disclosure may further include an inner housing 130 accommodating a terminal electrically connected to the inner cable. In the connector of the present disclosure, the housing case 110 is a case that defines the outside of the connector, and the inner case 130 is disposed inside the housing case 110. Therefore, the housing case 110 and the inner case 130 can be also referred to as an outer case and an inner case, respectively, due to the relative arrangement relationship.

The housing case 110 is an insulating member having a substantially box-like shape, and can have an opening region 112 on the device connector 300 side. In addition, an insertion through-hole 111 through which the cable 200 can pass may be formed in at least 1 side surface of the housing case 110. In the electrical connector unit 1000 of the present disclosure, the cable 200 combined with the connector 100 is extended from the housing case 110 to the outside through the insertion through-hole 111 (see fig. 1). The insertion through hole 111 may have a shape protruding in a cylindrical shape toward the outside of the housing case 110. Further, a screw for screwing with the nut 170 may be engraved on the outer periphery of the insertion through-hole 111, and the gap between the insertion through-hole 111 and the cable 200 may be closed by tightening the nut 170. Further, in order to more reliably stop water between the insertion through-hole 111 and the cable 200, the seal 150 and/or the jig 160 may be used between the nut 170 and the portion protruding in a cylindrical shape. One end of the cable 200 inserted through the housing case 110 is accommodated in the housing case 110. An inner cable bundle of a predetermined length extends from an end of the cable 200 toward the opening 112 of the housing case 110, and a tip of the inner cable bundle is electrically connected to a terminal (not shown). That is, the cable 200 inserted through the side surface of the housing case 110 has an inner cable bundle of a predetermined length extending downward from the end of the cable 200.

Although not shown, terminals connected to the inner cable harness inserted through the frame body case 110 may be accommodated in the inner case 130. The inner housing 130 may be formed of an insulating material (e.g., resin) and configured to be combined with a conductive housing 310 of the device connector 300, which will be described later. Further, the inner housing 130 is configured in such a manner as to support terminals connected to the inner cable. In a state where the device connector 300 and the connector are combined, each of the terminals in the inner housing 130 is electrically connected to each of the terminals provided in the device connector 300.

In one embodiment of the present disclosure, the device connector 300 is a connector provided to a device. The device connector of the present disclosure can be applied to various electronic devices, for example, devices such as motors used in industrial machines or industrial robots. As shown in fig. 3, the device connector 300 includes, as main components, a conductive housing 310 and an insulating housing 320 provided in the conductive housing 310. The conductive housing 310 includes a base portion 311 provided on the surface of a housing (not shown) of the device and a cylindrical protruding portion 312 configured to be combined with the opening region 112 of the housing case 110. The device connector 300 of the present disclosure is configured such that the conductive housing 310 is grounded. For example, the base portion 311 of the conductive housing 310 is disposed to be electrically connected to the surface of the housing of the device, thereby achieving grounding. In addition, the cylindrical protruding portion 312 is formed so as to protrude upward from the base portion 311. The open area 112 of the frame case 110 is combined with the cylindrical projection 312, whereby the terminal at the tip of the internal cable and the terminal accommodated in the insulating case 320 are electrically connected to each other. More specifically, the connector 100 is mounted to the device connector 300 by combining the housing case 110 and the conductive case 310 such that the opening region 112 of the housing case 110 surrounds the cylindrical protruding portion 312.

In the present disclosure, the conductive housing is formed of a conductive material. Although not particularly limited, the conductive case may be formed of a metal such as aluminum or an aluminum alloy, a resin plated with a conductive material on the surface, or the like. In particular, if importance is attached to excellent productivity and dimensional accuracy, the conductive housing of the present disclosure is preferably formed by isostatically casting an aluminum die cast.

Additionally, in one embodiment of the present disclosure, the device connector 300 may have a filler for water stopping (124971248312461\12531. The filler can be provided, for example, at the outer periphery of the cylindrical protruding portion 312 combined with the connector 100 and/or at the joint of the base portion 311 and the device. This can fill up gaps that may occur at the combined position of the connector 100, the device connector 300, and the device, and can appropriately prevent water from being applied to the electric components such as the internal cable and the terminal.

In addition, in one embodiment of the present disclosure, in order to maintain the assembled state of the connector and the device connector 300, the locking lever 140 may be used. As shown in fig. 3, the lock lever 140 has a substantially U-shape, and may be configured to be combined with a side surface of the housing case 110 from a direction facing the insertion through-hole 111. The lock lever 140 has arm portions 141 at both ends, and an engaging portion 142 at an end of each arm portion 141. The housing case 110 has engaged portions configured to receive the engaging portions 142 of the locking levers 140 on the side surfaces engaged with the both ends of the locking levers 140. In addition, the conductive housing 310 of the device connector 300 may have a pair of protrusions 313 protruding from the base 311 in the upward direction and formed to engage with the arm portion 141 of the locking lever 140. At the tip of each protrusion 313, a hook 313a protruding toward the cylindrical protrusion 312 may be provided. In a state where the connector and the device connector 300 are assembled, the arm portion 141 of the locking lever 140 is inserted so as to pass between the protruding portion 313 and the cylindrical protruding portion 312 of the conductive housing 310, and the hooking portion 313a is hooked to the arm portion 141. Further, the locking portion 142 of the arm portion 141 is engaged with the locked portion of the housing case 110, and the connector 100 and the device connector 300 are locked in a fitted state.

In the present disclosure, the insulating members such as the housing case 110, the inner case 130, the insulating case 320, and the lock lever 140 may be formed of an insulating nonconductive material. These insulating members may include a resin material having insulating properties. Although not particularly limited, the insulating member concerned can contain at least 1 thermosetting resin selected from the group consisting of, for example, epoxy resin, phenol resin, silicone resin, and unsaturated polyester resin. In addition, the different members may be formed of different resin materials.

The electrical connector unit of the present disclosure is characterized in a shielding configuration for electrically shielding an electrical cable and a terminal connected to the electrical cable. In particular, the electrical connector unit of the present disclosure features a configuration of the shield that does not directly interfere with the covered component of the cable. Hereinafter, a shield structure in the electrical connector unit of the present disclosure will be described.

In the electrical connector unit 1000 of one embodiment of the present disclosure, the connector shield 120 is provided in such a manner as to function as a shield member for a terminal connected to the top end of an internal cable. Furthermore, the connector shield 120 can also be used in order to ensure shielding properties for an internal cable extending from an end of the cable 200 and a terminal connected to a tip end of the internal cable. In one embodiment, the connector shield 120 may be formed in such a manner as to cover the internal cables and terminals extending from the end of the cable 200 from above.

In addition, in one embodiment of the present disclosure, the connector shield 120 can be mounted with respect to the inner housing 130 that houses the terminal connected to the top end of the inner cable. More specifically, the connector shield 120 may be disposed on the upper surface of the inner housing 130 so as to cover the inner cable connected to the terminal inside the inner housing 130 (see fig. 7A). Further, a protrusion 131 for fixing the connector shield 120 may be formed on an outer side surface of the inner housing 130. Further, the connector shield may be configured to hook into the protrusion 131. As illustrated, the connector shield is bent downward and extends along the side surface of the inner housing, and has an engagement portion 124 at its distal end that engages with the projection 131. With this configuration, the connector shield 120 is held by the protrusion 131 of the inner housing 130, so that a space for the inner cable to be inserted therethrough can be formed between the connector shield 120 and the upper surface of the inner housing 130.

Fig. 4 is a perspective view schematically showing a state in which the connector shield 120 and the linear shield 221 are connected to each other in the electrical connector unit of the present disclosure. As illustrated, in the cable 200 of the present disclosure, the cable shield 220 is configured to have a linear shield 221 protruding from the cable shield 220 toward the connector 100. The linear shield 221 may extend outward from one end of the cable 200, and at least a part of the linear shield 221 may be exposed to the outside of the insulating cover member 210. In one embodiment, a wire shield extending from the cable shield as part of the cable shield 220 may be mounted to the connector shield. That is, the linear shield 221 extending from the end of the cable 200 is attached to the connector shield 120 in the housing case 110. That is, in the electrical connector unit 1000 of the present disclosure, the cable shield 220 is connected to the connector shield 120 by the linear shield 221 protruding to the outside of the cover member 210 toward the connector unit. With the above configuration, it is possible to perform the connection of the cable shield 220 and the connector shield 120 without directly interfering with the outer diameter of the cable 200. Therefore, it is possible to more suitably prevent the occurrence of a connection failure due to a change in the outer diameter dimension of the cable. Further, in the above-described structure, the cable shield and the connector shield 120 can be electrically connected without using another member such as a copper foil or a crimp terminal interposed between the cable shield and the connector shield 120. Therefore, in the electrical connector unit according to the present disclosure, when the cable and the shield element in the connector are connected to each other, a more suitable configuration of the electromagnetic shield can be achieved without requiring a separate connecting member.

Further, in the electrical connector unit according to the embodiment of the present disclosure, the linear shield 221 may be formed so as to bridge the cable shield 220 and the connector shield 120. In other words, the linear shield 221 can be not located on the surface of the cover member 210 but bridged between the end of the cable shield 220 and the connector shield 120. More specifically, the linear shield 221 is not positioned on the outer surface of the covered member 210, but electrically conducts the cable shield 220 and the connector shield 120. This means that, in the electrical connector unit of the present disclosure, the connection of the cable shield 220 and the connector shield 120 that does not directly interfere with the outer diameter of the cable can be achieved by using the linear shield 221. Therefore, in the electrical connector unit of the present disclosure, a more suitable configuration of the electromagnetic shield member that is not affected by the variation in the outer diameter dimension of the cable is achieved.

As is understood from the above description, "linear shield" in the present disclosure means a shield member of an elongated shape extending from an end of the cable shield 220. Therefore, the linear shield of the present disclosure can correspond to, for example, a long-sized linear shield member or a strip-shaped linear shield member. In addition, the "linear shape" in the present disclosure is not limited to a linear shape in a plan view, and may be a shape having a curved shape, and the thickness thereof may not necessarily be constant. Further, the linear shield is not limited to the single wire, and may be formed of a bundle, a twisted wire, a braided wire, a twisted wire, or the like, which is formed of a plurality of shield elements. In the present disclosure, the linear shield does not necessarily need to be coated with an insulating material (for example, a resin member such as polyvinyl chloride or polyethylene).

In the electrical connector unit of the present disclosure, the cable shield 220 is formed of a conductive material for electrically shielding the inner cable bundle. The conductive material used for the cable shield 220 is preferably a flexible conductive material because of its advantage in wiring to devices and the like disposed in a narrow space. In particular, the cable shield 220 according to one embodiment of the present disclosure is preferably a braid (wire) formed of a plurality of conductive wires (wired lines) such as conductive strands or fibers having excellent durability and flexibility. Although not particularly limited, the braid used for the cable shield of the present disclosure may be formed of a material having excellent conductivity, such as copper, a copper alloy, aluminum, or an aluminum alloy. In addition, a conductive plating layer such as tin plating, nickel plating, or silver plating may be formed on the surface of the material in order to prevent oxidation or rust.

In the case where the cable shield 220 is a braid, the linear shield 221 can be configured by bundling the ends of the conductive strands or fibers forming the braid. In other words, the wire-shaped shield 221 may be a stranded wire formed by stranding at least a portion of conductive wires forming a braid at an end of the cable shield 220. That is, the wire-shaped shield can be formed by unwinding the conductive wire material constituting the braid, taking out a part of the conductive wire material, and collecting the same. Alternatively, the cable shield 220 may be configured such that a part of the conductive wire material constituting the braid is extended, and the linear shield 221 may be provided by drawing the relevant part of the conductive wire material from the end of the cable 200. Further, the linear shield 221 may be formed of an untwisted wire composed of at least a part of the conductive wire forming the braid. As described above, by using a braid as the cable shield 220, it can be possible to more easily form the wire shield. Further, since the wire shield 221 extends outward from the braid, which is the cable shield 220 in the cover member 210, the connection with the connector shield 120 is not directly positioned on the outer periphery of the cable, and does not interfere with the outer diameter of the cable. Therefore, with the electrical connector unit of the present disclosure, it can become possible to constitute a more suitable electromagnetic shield that is not affected by variations in the outer diameter dimension of the cable.

As is understood from the above description, the linear shield 221 of the present disclosure may be configured in such a manner that at least a portion of the cable shield 220 protrudes from the end of the cable 200 and is interconnected with the connector shield 120. Therefore, in the present disclosure, the cable shield 220 and the wire shield 221 may be integrally configured. This means that the wire-like shield 221 is not constructed separately from the cable shield 220, but can be constructed from at least a part of the cable shield 220. From such a point of view, the cable used in the present disclosure can also be considered as a cable of the type without a drain member provided without a drain member (12489125241255224102. In view of the above, in the electrical connector unit of the present disclosure, it is possible to achieve a more suitable configuration of the electromagnetic shield as follows: when connecting the cable shield with the connector shield, no additional components are necessarily required.

The connector shield 120 used in the electrical connector unit of the present disclosure may be formed of a conductive material such as a metal or a soft magnetic material, or a material having conductivity on the surface thereof by plating or the like. Although not limited, the connector shield 120 may be formed of a conductive plate-like member, and may be formed by punching and/or bending a metal thin plate, for example.

Fig. 5A schematically illustrates a state before the connection between the connector shield 120 and the linear shield of the electrical connector unit according to the embodiment of the present disclosure. In addition, fig. 5B is a perspective view schematically showing a state in which the connector shield 120 and the wire shield 221 of the electrical connector unit are connected to each other. Further, fig. 6 schematically shows the configuration of the electromagnetic shield in the case where a braid is used as the cable shield 220. As shown in fig. 5A, the connector shield 120 may have a shield arm 121 provided so as to protrude toward the insertion through direction of the cable 200. Further, as shown in fig. 5B and 6, in one embodiment of the present disclosure, the wire shield 221 may be mounted with respect to the shield arm 121 protruding from the connector shield 120. That is, the shield arm 121 extends toward the end of the cable 200 inserted into the housing case 110 and is connected to the linear shield 221. This means that the shield arms 121 and the wire-like shield 221 can bridge between the cable shield 220 and the connector shield 120. By forming the shield arm 121, the linear shield 221 can be further shortened. Therefore, with this configuration, the durability of the wire-shaped shield is further improved, and it is possible to configure a more suitable electromagnetic shield.

As shown in fig. 5A and 6, the connector shield 120 used in the electrical connector unit according to the embodiment of the present disclosure may have a cylindrical portion 122. In this embodiment, the wire-like shield 221 may be crimped at the barrel portion 122. More specifically, the conductive cylindrical portion 122 formed at the portion of the connector shield 120 connected to the linear shield 221 integrally includes a plate portion 122a and a pair of crimping pieces 122b formed so as to sandwich the plate portion 122 a. The wire-like shield 221 overlaps the plate portion 122a so as to be accommodated between the pair of crimping pieces 122b. Next, pressure is applied to the outer periphery of the cylindrical portion 122, and the crimping piece 122b is bent and caulked so as to enclose the linear shield 221 (jawshows 322241712427. Thereby, the linear shield 221 is press-connected so as to be pressed by the plate portion 122a, and the continuity between the connector shield 120 and the cable shield 220 is ensured. With the above-described structure, the wire shield 221 can be connected to the connector shield 120 by a simple operation of crimping, and therefore, the work efficiency in manufacturing the electrical connector unit can be improved. Further, by using the cylindrical portion 122, the wire-shaped shield 221 is crimped so that the outer periphery thereof is covered with the conductive member, and a more suitable electromagnetic shield that can more reliably connect the cable shield 220 and the connector shield 120 can be configured.

Further, in one embodiment of the present disclosure, the cylindrical portion 122 may be provided at an end portion of the shield arm 121. More specifically, as shown in fig. 5A, the shield arm 121 can have a pair of crimping pieces 122b at the end portions thereof provided in such a manner as to project toward both outer sides in the width direction of the shield arm 121, respectively. In this structure, the wire-shaped shield 221 is overlapped with the shield arm 121, and the crimping piece 122b provided at the end of the shield arm 121 is caulked and crimped. The connection between the linear shield 221 and the shield arm 121 can be made on either the upper surface or the lower surface of the shield arm 121. However, from the viewpoint of space saving of the connector, it is more preferable to connect the shield arm 121 to the lower surface thereof. In such a configuration, the cylindrical portion 122 can be an open cylindrical portion in which the crimping pieces 122b are provided so as to face obliquely downward. However, the cylindrical portion does not necessarily need to be an open cylindrical form, and a closed cylindrical portion may be provided.

Further, in the electrical connector unit of the present disclosure, the connection pattern of the connector shield 120, the shield arm 121, or the barrel portion 122 and the wire-shaped shield 221 is not limited to the crimping. In the connection, other fixing patterns that ensure continuity, such as welding, or a combination of a plurality of fixing patterns, may be used.

Fig. 7A and 7B are perspective views schematically showing the configuration of the electromagnetic shield before (fig. 7A) and after (fig. 7B) fitting of the connector according to the embodiment of the present disclosure with the device connector 300. In one embodiment of the present disclosure, if the connector and the device connector 300 are combined with each other, the connector shield 120 is electrically connected to the conductive housing 310 of the device connector 300. That is, in a state where the connector is combined with the device connector 300, the connector shield 120 is formed in contact with the conductive housing 310 so as to be conductive. Further, as described above, the conductive housing 310 is configured to be electrically connected to a device and grounded. Accordingly, the connector shield 120 is electrically connected to the conductive housing 310, so that grounding of the connector shield 120 is performed. Therefore, by the operation of combining the connector with the device connector, the connector shield 120 is electrically conducted to the conductive housing 310, and the shielding property of the terminal in the connector can be secured. For example, the connector shield 120 may be formed so as to contact the cylindrical protruding portion 312 of the conductive housing 310 in a fitted state. With this configuration, it is possible to realize a more appropriate configuration of the electromagnetic shield that can more easily configure the shield by the fitting operation of the electrical connector unit and the device connector.

Further, as shown in fig. 7A, the connector shield 120 may further include a plate spring portion 123. The plate spring portion 123 may be configured to contact the conductive housing 310 in a state where the connector is combined with the device connector 300. More specifically, as illustrated, the connector shield 120 may have a plate spring bent downward and extending. The plate spring portion 123 may be inserted between the cylindrical protruding portion 312 of the conductive housing 310 and the insulating housing 320 when the connector and the device connector are combined. The plate spring portion 123 elastically contacts the inside of the cylindrical protrusion 312, so that the connector shield 120 and the conductive housing 310 are electrically connected to each other. As described above, the plate spring portion 123 having elasticity is sandwiched between the conductive case 310 and the insulating case 320, and thus the plate spring portion 123 and the conductive case 310 can be more reliably connected, and a more suitable configuration of the electromagnetic shield can be provided.

In addition, in the electrical connector unit according to the embodiment of the present disclosure, the following configuration may be adopted: when the connector is combined with device connector 300, connector shield 120 contacts conductive shell 310 before the terminals of the connector are electrically connected with the terminals of device connector 300. For example, the cylindrical protruding portion 312 of the conductive housing 310 may be provided with a ridge portion 312a to be electrically connected to the connector shield 120 before the terminal is connected. Alternatively, the plate spring portion 123 of the connector unit may be configured to be electrically conducted with the conductive housing 310 before the terminals are connected. With this configuration, the shielding member is grounded before the terminal is turned on, and it becomes possible to more suitably suppress the occurrence of electrostatic discharge.

In addition, in one embodiment of the present disclosure, the connector shield 120 and the conductive housing 310 may be formed to substantially surround the inner housing 130 of the connector in a fitted state of the connector and the device connector 300. In other words, it can be constituted in the following manner: the connector is combined with the device connector 300 so that the terminals in the inner housing 130 and the insulative housing 320 are shielded by the connector shield 120 and the conductive housing 310. This means that the terminals of the connector-and-device connector 300 can be accommodated in the shielding space formed by the connector shield 120 and the conductive housing 310. With the above configuration, the electrical connector unit of the present disclosure can realize a more suitable configuration of the electromagnetic shield in the fitted state of the connector and the device connector.

With the above-described configuration, as illustrated in fig. 7B, in a state where the connector of the present disclosure is combined with the device connector 300, the cable shield 220 of the present disclosure is electrically connected to the conductive housing 310 via the wire shield 221 and the connector shield 120. That is, in the fitted state of the connector and the device connector 300, the cable shield 220, the connector shield 120, and the conductive housing 310 are electrically conducted with each other. This means that the connector, the cable, and the shield member provided in the device connector according to the present disclosure can be appropriately grounded via the conductive housing in the fitted state. Therefore, the electrical connector unit of the present disclosure can provide a more appropriate configuration of the electromagnetic shield that can appropriately shield the cable and the terminal in the connector by the above-described configuration.

In addition, in one embodiment of the present disclosure, the device connector may be a motor side connector provided to the motor device. For example, the electrical connector unit of the present disclosure can be applied to motor apparatuses such as industrial machines and industrial robots. In one embodiment of the present disclosure, the electrical connector unit applied to the motor device may be a power/signal composite electrical connector unit including an internal cable for supplying a power voltage for driving or braking the device, and an internal cable for transmitting a signal from a device such as a sensor mounted on the device.

In such a power/signal composite electrical connector unit, a terminal for transmitting a signal and a terminal for supplying a power voltage can be arranged adjacent to each other, and when the device is operated, there is a possibility that the terminals interfere with each other. Therefore, the use of the above-described configuration of the electromagnetic shield in the electrical connector unit of the present disclosure appropriately separates the inter-terminal and the inner cable bundle connected to each terminal, so that mutual interference can be reduced or eliminated. That is, the electromagnetic shield of the present disclosure may be configured to electrically shield each of the power supply internal cable harness and the terminal, and the signal internal cable harness and the terminal (see fig. 7B). In addition, the electromagnetic shield may be provided to electrically shield the internal cable harness and the terminal for either the power supply or the signal, and the electromagnetic shield may be applied only to the terminal and the internal cable harness related to the signal transmission, for example. In the electrical connector unit according to the embodiment of the present disclosure, the cable 200 including the cable shield 220 and the covering member 210 may be configured as each of the power supply internal cable harness and the signal internal cable harness, and may be separately inserted from the 2 insertion through holes 111 provided in the housing case 110 (see fig. 1). In another embodiment, a composite cable may be formed by bundling the power supply cable and the signal cable, and the composite cable may be inserted through the housing case 110.

The embodiments of the present invention have been described above, but the present invention is not limited to these, and various modifications based on the knowledge of those skilled in the art can be made to the combination of the above-described components without departing from the spirit of the claims.

Industrial applicability

The electrical connector unit having the electromagnetic shield structure of the present disclosure can be suitably used in various technical fields requiring electrical connection.

Description of the symbols

1000. Electric connector unit

100. Connector with a locking member

110. Frame casing

111. Insert through hole

112. Opening area

120. Connector shield

121. Shielding arm

122. Barrel part

122a plate part

122b crimping piece

123. Plate spring part

124. Engaging part

130. Inner casing

131. Protrusion

140. Locking rod

141. Arm part

142. Stop part

150. Sealing element

160. Clamp apparatus

170. Nut cap

200. Cable with a protective layer

210. Coated member

220. Cable shield

221. Wire-like shield

230. Inner cable

231. Conducting wire

232. Inner cable coating

240. Inner cable harness

300. Device connector

310. Conductive shell

311. Base part

312. Cylindrical protrusion

312a bump

313. Projection part

313a hook

400. An insulating housing.

Claims

1. An electrical connector unit having a connector and a cable connected to the connector, wherein,

the cable includes an inner cable bundle including a plurality of inner cables, a cable shield, and an insulating covering member surrounding the inner cable bundle and the cable shield,

the connector includes a housing body and a connector shield provided in the housing body,

a wire-like shield protruding from the cable shield as part of the cable shield is attached to the connector shield.

2. The electrical connector unit according to claim 1, wherein the cable shield is a braid, and the wire-like shield is constituted by bundling ends of conductive strands or fibers forming the braid.

3. The electrical connector unit according to claim 1 or 2, wherein the wire-like shield is not positioned on the surface of the covered member but is bridged between an end of the cable shield and the connector shield.

4. The electrical connector unit according to any one of claims 1 to 3, wherein the wire-like shield is mounted with respect to a shield arm protruding from the connector shield.

5. The electrical connector unit according to any one of claims 1 to 4, wherein the connector shield has a barrel portion to which the wire-like shield is crimped.

6. The electrical connector unit of any one of claims 1 to 5,

also provided is a device connector arranged on the device,

the connector shield is electrically connected to the conductive housing of the device connector if the connector and the device connector are combined with each other.

7. The electrical connector unit according to claim 6, wherein in the combined state, the cable shield, the connector shield and the conductive housing are electrically connected to each other via the wire-like shield.

8. The electrical connector unit according to claim 6 or 7, wherein the connector shield includes a plate spring portion that is in contact with the conductive housing in the assembled state.

9. The electrical connector unit according to any one of claims 6 to 8, wherein the device connector is a motor-side connector provided to a motor device.

10. The electrical connector unit according to any one of claims 1 to 9,

the connector further includes an inner housing provided in the housing and having a terminal electrically connected to the cable,

the connector shield is mounted relative to the inner housing.

11. The electrical connector unit of any one of claims 6 to 9,

the device connector further has an insulating housing within the conductive housing,

the inner housing and the insulating housing are surrounded by the conductive housing and the connector shield.