JP6834739B2 - Connector device - Google Patents

Description

In the invention described in the scope of the patent claim of the present application, the circuit board is provided with a fitting port for inserting a plug connector to which a cable such as a plurality of coaxial cables is mounted and a connection fitting portion of the plug connector. The present invention relates to a connector device including a receptacle connector to be attached and used for making a plurality of cables attached to a plug connector electrically connected to a circuit board to which the receptacle connector is attached.

A circuit board to which various electric components are mounted in a state in which cables such as a plurality of coaxial cables that transmit various electric signals and voltages are relatively thin and are put together so as to form a cable group. In many cases, a connector device that acts as an intermediary for electrical connection of a plurality of cables to a circuit board is used for being electrically connected to the cable. Such a connector device is provided with, for example, a plug connector to which the plurality of cables are mounted and a fitting port portion which is electrically connected to and arranged with a circuit board and into which a connection fitting portion of the plug connector is inserted. It is configured to include the receptacle connector provided.

In a connector device used for electrically connecting a plurality of cables to a circuit board, a plurality of plug-side contacts to which a plurality of cables are connected are arranged in an array at a connection fitting portion of the plug connector. On the other hand, a plurality of receptacle-side contacts connected to the wiring portion provided on the circuit board are arranged and provided inside the fitting port portion of the receptacle connector. Then, when the connection fitting portion of the plug connector is inserted into the fitting opening portion of the receptacle connector, the plurality of receptacle side contacts are connected in a state of pressing contact with each of the plurality of plug side contacts, whereby a plurality of cables are connected. Is electrically connected to the wiring portion provided on the circuit board via the plug connector and the receptacle connector.

As described above, in the connector device in which the connection fitting part of the plug connector to which multiple cables are mounted is inserted into the fitting port of the receptacle connector to be attached to the circuit board, the wires of the plurality of cables are further thinned and the circuit board is further thinned. It is desired that the plug connector and the receptacle connector be made smaller and thinner, respectively, as the size and weight of the plug connector are further reduced. Therefore, in the case of the receptacle connector, the wiring portion of the circuit board is properly and surely set for each of the plurality of receptacle side contacts under the condition that the overall size is reduced and the arrangement interval of the plurality of receptacle side contacts is extremely small. In addition, in the case of a plug connector, the connection fitting part was inserted into the fitting port of the receptacle connector and fitted to the receptacle connector while the overall size was reduced. It is required to be able to maintain a stable state.

Under such circumstances, conventionally, it is a connector device including a plug connector and a receptacle connector and used for electrical connection of a plurality of cables to a circuit board, and the receptacle connector is a pair. A plurality of receptacles arranged in a receptacle-side insulating housing provided with a fitting port for inserting a plug connector connection fitting on one of the mutually opposed end faces and arranged on a circuit board. The side contacts are assumed to include a plurality of first contacts and a plurality of second contacts arranged alternately, and the connection terminals of the plurality of first contacts are connected to each other of the receptacle side insulating housing. A circuit board is connected to the circuit board by projecting from one of the opposing end faces to the outside, and the connection terminals of the plurality of second contacts project to the outside from the other of the mutually opposed end faces of the receptacle-side insulating housing. Those connected to a substrate have been proposed (see, for example, Patent Document 1). Further, it is a connector device including a plug connector and a receptacle connector and used for electrical connection of a plurality of cables to a circuit board. The plug connector has a connection fitting portion of the receptacle connector as a fitting port. Also proposed is provided with a fitting maintaining means that engages with the receptacle connector to maintain the fitting state of the plug connector with the receptacle connector when inserted (see, for example, Patent Document 2).

The connector device (cable connector) shown in Patent Document 1 is arranged on a circuit board (printed circuit board) in a configuration including a plug connector (P) and a receptacle connector (receptacle connector (R)). A fitting port (receptacle side space) into which a plug connector connection fitting part (plug protrusion (15)) is inserted into one of a pair of mutually opposed end face portions in the receptacle side insulating housing (receptacle side holding member (51)). The opening (52) is provided, and a plurality of receptacle-side contacts arranged in the receptacle-side insulating housing are provided, and a plurality of first contacts (receptacle contacts (50)) and a plurality of alternately arranged first contacts (receptacle contacts (50)) are provided. It is supposed to include a second contact (receptacle contact (50')). Then, each of the plurality of first contacts is provided on the circuit board with its connection terminal portion (lead portion (50c)) protruding outward from the other of the pair of mutually opposed end face portions in the receptacle side insulating housing. It is assumed that it is electrically connected to the wiring part (signal pattern) by soldering or the like, and each of the plurality of second contacts connects the connection terminal part (lead part (50c')) to the receptacle side. It is supposed that one of the pair of mutually opposed end face portions of the insulating housing protrudes to the outside and is electrically connected to the wiring portion (signal pattern) provided on the circuit board by soldering or the like.

As described above, a plurality of first contacts and a plurality of second contacts in which a plurality of receptacle-side contacts arranged in an array on the receptacle-side insulating housing arranged on the circuit board are alternately arranged are included. The connection terminals of the first contact and the connection terminals of the plurality of second contacts project to the outside from one and the other of the mutually opposed end faces of the receptacle-side insulating housing. By doing so, even if the arrangement spacing of the plurality of receptacle side contacts is made extremely small, the wiring portion provided on the circuit board of each connection terminal portion of the plurality of first contacts The connection is properly performed without being hindered by the connection terminals of the plurality of second contacts, and with the wiring portion provided on the circuit board of the connection terminals of the plurality of second contacts. The connection is properly performed without being hindered by the connection terminals of the plurality of first contacts.

Further, in the connector device (electric connector assembly) shown in Patent Document 2, the plug connector is a conductive shell on the plug side when the plug connector (1) and the receptacle connector (2) are provided. The connection fitting (fitting protrusion (11b)) rotatably attached to the (conductive shell (13)) and provided on the plug-side insulating housing (main body housing (11)) is inserted into the receptacle connector. When the plug connector is engaged with the receptacle connector, it is rotated toward the receptacle connector side and engages with the lock portion (23b) provided on the receptacle side conductive shell (conductive shell (23)). As a result, a fitting maintenance member (fitting rotation arm (14)) for maintaining the fitting state of the plug connector with the receptacle connector is provided. Then, in the mating maintenance member, it engages with the lock portion (23b) provided in the conductive shell (conductive shell (23)) on the receptacle side, and is in a mated state with the receptacle connector of the plug connector. When the state is maintained, the connection fitting portion provided on the plug-side insulating housing in the receptacle-side insulating housing (main body housing (21)) of the receptacle connector is moved from the end face portion on the side opposite to the side to which it is inserted to the outside. A cover portion that covers a connection terminal portion (solder connection portion (22a)) that is a connection portion with a circuit board (main printed wiring board (B)) of each of a plurality of protruding receptacle side contacts (conductive contact (22)). (Conductive cover (14d)) is provided.

In this way, the plug connector is provided with a rotatable mating maintenance member, and when the plug connector is in a mating state with the receptacle connector, the mating maintenance member is rotated toward the receptacle connector side. By engaging with the lock portion provided on the conductive shell on the receptacle side, the mating state of the plug connector with the receptacle connector is stably maintained. Further, at that time, the cover portion provided on the fitting maintenance member covers the connection terminal portion which is the connection portion with the circuit board in each of the plurality of receptacle side contacts, so that the plurality of receptacle sides are covered. An electromagnetic shielding action is provided on the connection terminal portion of each contact.

JP-A-2009-199891 Japanese Unexamined Patent Publication No. 2011-238410

A connector device including a plug connector and a receptacle connector described in Patent Document 1 as described above, which is used for electrical connection of a plurality of cables to a circuit board. A plurality of first contacts and a plurality of second contacts in which a plurality of receptacle-side contacts arranged in an array on a receptacle-side insulating housing arranged on a substrate are arranged alternately, and a plurality of first contacts are included. The respective connection terminals of the above and the respective connection terminals of the plurality of second contacts are assumed to protrude outward from one and the other of the mutually opposed end face portions of the receptacle side insulating housing. This is accompanied by inconvenience in terms of electromagnetic shielding for each connection terminal of the plurality of receptacle side contacts.

That is, with respect to the connection terminals of the plurality of first contacts and the plurality of first contacts among the plurality of second contacts constituting the plurality of receptacle-side contacts, it is possible to use the connector in the receptacle-side insulating housing. Since it is assumed that the connector is projected outward from the end face portion on the opposite side facing the end face portion provided with the fitting port into which the connection fitting portion of the plug connector is inserted, for example, a plug connector to be fitted to the receptacle connector is used. , Like the plug connector described in Patent Document 2, the fitting maintaining member provided with the cover portion is rotatably provided, so that the plug connector is in a fitted state with the receptacle connector. Originally, it shall be covered by a cover portion provided on the fitting maintenance member of the plug connector, whereby the electromagnetic shielding action of the cover portion provided on the fitting maintenance member of the plug connector shall be provided. Can be done. However, with respect to the connection terminals of the plurality of first contacts and the plurality of second contacts among the plurality of second contacts constituting the plurality of receptacle side contacts, even if the plugs are fitted to the receptacle connectors. Even when the connector is rotatably provided with a fitting maintenance member provided with a cover portion as in the plug connector described in Patent Document 2, the electromagnetic shielding action as described above is performed. Cannot be kept in a state where it is brought about.

This is because the connection terminal portions of the plurality of second contacts project outward from the end face portion of the receptacle side insulating housing provided with the fitting port portion into which the connection fitting portion of the plug connector is inserted. Therefore, under the condition that the plug connector is fitted with the receptacle connector, the connection fitting portion of the plug connector inserted into the fitting port portion of the receptacle side insulating housing is assumed to be arranged in close proximity to the plug. This is because it is not supposed to be covered by the cover portion provided on the fitting maintenance member in the connector. Further, from the arrangement portion of the connection terminal portion of each of the plurality of second contacts, the plug connector or the receptacle connector of the plurality of second contacts is fitted with the receptacle connector of the plurality of second contacts. It is also difficult and impractical to arrange an additional conductive member that exerts an electromagnetic shielding action on each connection terminal portion. Therefore, the electromagnetic shielding action is not provided to the connection terminals of the plurality of second contacts, and for example, undesired electromagnetic waves leak from the gaps around the connection terminals of the plurality of second contacts. There is a risk of doing so.

In view of these points, the invention described in the scope of the patent claim of the present application is to fit a plug connector to which a plurality of cables are mounted and the plug connector used for electrically connecting a plurality of cables to a circuit board. The receptacle connector is configured to include a receptacle connector, and the receptacle connector is provided with a fitting port for inserting a connection fitting portion of a plug connector into one of a pair of mutually opposed end face portions, and an insulating housing on the receptacle side arranged on a circuit board. A plurality of first contacts are provided, and the plurality of receptacle-side contacts arranged in the receptacle-side insulating housing are assumed to include a plurality of alternately arranged first contacts and a plurality of second contacts. Each connection terminal of the contact is connected to the circuit board by projecting from one of the mutually opposed end faces of the receptacle side insulating housing to the outside, and each connection terminal of the plurality of second contacts is insulated on the receptacle side. It is a connector device that projects from the other end face of the housing to the outside and is connected to the circuit board. Even if the overall size and thickness are reduced, the plug connector is a receptacle connector. Provided are those capable of providing an effective electromagnetic shielding action to each connection terminal portion of a plurality of receptacle-side contacts when placed in the mated state.

The connector device according to the invention according to any one of claims 1 to 6 in the claims of the present application (hereinafter referred to as the invention of the present application) has a plurality of plug-side contacts to which a plurality of cables are connected. A pair of facing each other with a plug-side insulating housing having an array of connection fittings and a plug connector with a plug-side conductive shell covering a portion of a plurality of plug-side contacts to which multiple cables are connected. A circuit that partially covers the receptacle-side insulating housing and the receptacle-side insulating housing that have end faces and are provided with a fitting port into which the connection fitting of the plug connector is inserted and are arranged on the circuit board. The conductive shell on the receptacle side, which is connected to the substrate and the ground potential is applied, and the connection fitting part of the plug connector, which is arranged in the insulating housing on the receptacle side and inserted into the insulating housing on the receptacle side through the fitting port. A plurality of receptacle-side contacts are provided so as to press-contact each of the plurality of plug-side contacts, and the plurality of receptacle-side contacts project from one of the mutually opposed end faces of the receptacle-side insulating housing to the outside of the receptacle-side insulating housing. A plurality of first contacts, each of which is intended to have a first connector portion connected to a circuit board, and each projecting from the other end face portion of the receptacle-side insulating housing to the outside of the receptacle-side insulating housing. A plurality of receptacle-side conductive shells are configured to include a receptacle connector comprising a plurality of second contacts allegedly having a second connection terminal portion connected to a substrate. A plurality of first connection terminal portions each of the first contacts are arranged so as to surround the outer side of the array, and the connection fitting portion of the plug connector is inserted into the receptacle-side insulating housing through the fitting opening portion. At that time, it is characterized by having a terminal shield portion that comes into contact with the conductive shell on the plug side.

In the connector device according to the present invention as described above, the receptacle connectors provided with the receptacle-side insulating housings arranged on the circuit board alternately form a plurality of receptacle-side contacts arranged in the receptacle-side insulating housings. A plurality of arranged first contacts and a plurality of second contacts have a plurality of first connection terminals each of the plurality of first contacts thereof having a plurality of first connection terminals, which are mutually opposed end faces of a receptacle-side insulating housing. It is assumed that one of them protrudes to the outside of the receptacle side insulating housing and is connected to the circuit board, and the plurality of second connection terminals each of the plurality of second contacts of them are connected to the receptacle side insulating housing. The terminal shield portion of the receptacle-side conductive shell is connected to the circuit board by projecting from the other end face portion of the receptacle side to the outside of the receptacle-side insulating housing, and the plurality of first contacts each of the plurality of first contacts have. A plurality of plug-side contacts in which a plurality of cables in the plug-side insulating housing provided in the plug connector are connected are arranged in a state of being arranged so as to surround it outside the arrangement of the connection terminal portions of 1. The arranged connection fitting portion is inserted into the fitting opening portion provided on one of the mutually opposed end face portions of the receptacle side insulating housing, and the plug connector is in a mating state with the receptacle connector. At this time, a plurality of receptacle-side contacts including a plurality of first contacts and a plurality of second contacts press contact with the plurality of plug-side contacts, respectively, and a plurality of contacts connected to the plurality of plug-side contacts, respectively. The cable is electrically connected to the circuit board through a plurality of plug-side contacts and a plurality of receptacle-side contacts.

At the same time, at this time, the terminal shield portion provided on the receptacle-side conductive shell to which the ground potential is applied is located outside the array of the plurality of first connection terminal portions each of the plurality of first contacts. The plug-side conductive shell that covers the portion to which the plurality of cables are connected in the plurality of plug-side contacts provided in the plug connector is brought into contact with the plug-side conductive shell. In this way, it is provided on the receptacle-side conductive shell to which the ground potential is applied, and is arranged so as to surround it outside the array of the plurality of first connection terminals, and hits the plug-side conductive shell. The contact-contact terminal shields provide an electromagnetic shielding effect on the plurality of first connection terminals each of the plurality of first contacts in the receptacle connector.

In particular, in the connector device according to the present invention according to claim 6 within the scope of the patent claim of the present application, the plug connector is rotatably provided with respect to the plug-side conductive shell and the plug-side conductive shell. When electrically connected to the sex shell and the connection fitting of the plug connector is inserted into the receptacle side insulating housing through the fitting port, it engages with the receptacle side conductive shell and fits the plug connector with the receptacle connector. A plurality of second connection terminals each provided with a mating retention member that maintains a state, and each of the plurality of second contacts provided on the receptacle connector when the mating retention member engages with a receptacle-side conductive shell. It is assumed to have a cover portion that covers the arrangement of the portions. The cover portion of the fitting maintenance member included in the plug connector covers the arrangement of the plurality of second connection terminal portions in the receptacle connector when the fitting maintenance member engages with the receptacle-side conductive shell. Therefore, it provides an electromagnetic shielding action on the plurality of second connection terminals each of the plurality of second contacts provided in the receptacle connector.

In the connector device according to the present invention, as described above, the receptacle connector provided with the receptacle-side insulating housing arranged on the circuit board has a plurality of first connection terminal portions each of the plurality of first contacts. It is assumed that one of the mutually opposed end faces of the receptacle-side insulating housing projects to the outside of the receptacle-side insulating housing and is connected to the circuit board, and a plurality of second connection terminals each of the plurality of second contacts are provided. , Multiple cables in the plug-side insulating housing provided by the plug connector are connected to each other, assuming that they are connected to the circuit board by projecting from the other end face of the receptacle-side insulating housing to the outside of the receptacle-side insulating housing. A connection fitting portion in which a plurality of plug-side contacts are arranged in an array is inserted into a fitting opening provided on one of the mutually opposed end faces of the receptacle-side insulating housing, and the plug connector is fitted with the receptacle connector. When the state is taken, the terminal shield portion of the receptacle-side conductive shell of the receptacle connector is arranged so as to surround it outside the array of the plurality of first connection terminal portions each of the plurality of first contacts. Underneath, it is assumed that the plug connector has a plurality of plug-side contacts that come into contact with the plug-side conductive shell that covers the connected portion of the plurality of cables, whereby the plurality of first contacts in the receptacle connector are brought into contact with each other. It provides an electromagnetic shielding action for each of the plurality of first connection terminals.

Therefore, according to the connector device according to the present invention, a plug connector to which a plurality of cables are mounted and a receptacle connector to which the plug connector is fitted are included, and the receptacle connector is one of a pair of mutually opposed end faces. A fitting port for inserting a connection fitting portion of a plug connector is provided in the circuit board to provide a receptacle-side insulating housing arranged on a circuit board, and a plurality of receptacle-side contacts arranged in an array on the receptacle-side insulating housing are alternately arranged. Under the condition that the plurality of first contacts and the plurality of second contacts arranged are included, the first connection terminal portion of each of the plurality of first contacts is the mutually opposed end face portion of the receptacle side insulating housing. A circuit board is connected to the circuit board by projecting from one of them to the outside, and a second connection terminal of each of the plurality of second contacts protrudes to the outside from the other of the mutually opposed end faces of the receptacle-side insulating housing. Even if it is supposed to be connected to the board and the overall size and thickness are reduced, when the plug connector is put into the mated state with the receptacle connector, the plurality of first contacts each have. It is possible to provide an effective electromagnetic shielding action on a plurality of first connection terminals.

Further, in the connector device according to the present invention, when the plug connector is put into the mated state with the receptacle connector, the electromagnetic shield for the plurality of second connection terminal portions each of the plurality of second contacts has. The action can be brought about by, for example, the cover portion of the fitting maintenance member provided on the plug connector. In such a case, as in the case of the connector device according to the present invention described in claim 6 in the claims of the present application, the plug connector is placed in a mated state with the receptacle connector. The cover portion of the fitting maintenance member provided with the above covers the arrangement of the plurality of second connection terminals in the receptacle connector when the fitting maintenance member engages with the receptacle-side conductive shell. It provides an electromagnetic shielding action on the plurality of second connection terminals each of the plurality of second contacts provided in the receptacle connector.

FIG. 5 is a perspective view showing a state in which a plug connector and a receptacle connector constituting an example of the connector device according to the present invention are separated from each other and a plurality of cables are attached to the plug connector. FIG. 5 is a plan view showing a state in which a plug connector and a receptacle connector constituting an example of the connector device according to the present invention are separated from each other and a plurality of cables are attached to the plug connector. The plug connector and the receptacle connector constituting an example of the connector device according to the present invention are shown in a state where a plurality of cables are attached to the plug connector and the fitting maintenance member is removed from the plug connector while being separated from each other. It is a perspective view. FIG. 5 is a perspective view showing a state in which a receptacle-side conductive shell including a receptacle connector constituting an example of the connector device according to the present invention is removed. It is sectional drawing which shows the VV line cross section in FIG. It is sectional drawing which shows the VI-VI line cross section in FIG. A plurality of cables are attached to the plug connector, and the fitting maintenance member provided in the plug connector takes a first stationary position in a mutual fitting state between the plug connector and the receptacle connector constituting an example of the connector device according to the present invention. It is a top view which shows a state. A plurality of cables are attached to the plug connector, and the fitting maintenance member provided in the plug connector takes a first stationary position in a mutual fitting state between the plug connector and the receptacle connector constituting an example of the connector device according to the present invention. It is a side view which shows by the state. A plurality of cables are attached to the plug connector, and the fitting maintenance member provided in the plug connector takes a second stationary position in a mutual fitting state between the plug connector and the receptacle connector constituting an example of the connector device according to the present invention. It is a top view which shows a state. It is sectional drawing which shows the X-ray cross section in FIG. It is sectional drawing which shows the XI-XI line cross section in FIG. A plurality of cables are attached to the plug connector and the plug connector is provided with a mutual fitting state of the plug connector and the receptacle connector constituting an example of the connector device according to the present invention, with the receptacle connector attached to the circuit board. It is a perspective view which shows the state which the connector maintenance member takes a 2nd stationary position.

The embodiment for carrying out the present invention will be described with reference to the examples of the present invention described below.

In FIGS. 1 (perspective view) and 2 (plan view), a plug connector 11 and a receptacle connector 12 constituting an example of the connector device according to the present invention are shown, and a plurality of cables 13 are attached to the plug connector 11. It is shown.

The plug connector 11 is provided so as to be rotatable with respect to the plug-side insulating housing 14 formed of an insulating material such as synthetic resin, the plug-side conductive shell 15 formed of the conductive material, and the plug-side conductive shell 15. It is provided with the fitted fitting maintaining member 16. In the plug-side insulating housing 14, a plurality of contacts 17 and a plurality of contacts 18, each of which is made of a conductive material, are alternately arranged along the longitudinal direction (longitudinal direction (left-right direction) of the plug connector 11). It is provided. These alternately arranged contacts 17 and 18 together form a plurality of plug-side contacts. That is, the plurality of plug-side contacts arranged in the plug-side insulating housing 14 are assumed to include the plurality of contacts 17 and the plurality of contacts 18. A plurality of cables 13 are connected to each of the plurality of plug-side contacts including the plurality of contacts 17 and the plurality of contacts 18. Each of the plurality of cables 13 includes, for example, as shown in FIG. 5, a central conductor connected to the contact 17 or the contact 18, a dielectric covering the central conductor, an outer conductor surrounding the dielectric, and the like. It consists of an outer skin that covers the outer conductor. The outer conductor is connected to the plug-side conductive shell 15 described later via a ground bar commonly provided on the plurality of cables 13.

The portion 14a of the plug-side insulating housing 14 in which the plurality of plug-side contacts including the plurality of contacts 17 and the plurality of contacts 18 are arranged in an array is a plate-shaped portion extending in the longitudinal direction of the plug-side insulating housing 14. , The connection fitting portion 19 is formed. The connection fitting portion 19 is inserted into the receptacle side insulating housing 20 of the receptacle connector 12 which constitutes an example of the connector device according to the present invention together with the plug connector 11 through a fitting port portion 21 provided therein. , The plug connector 11 and the receptacle connector 12 are in a mutually fitted state.

The plug-side conductive shell 15 is connected to a plurality of cables 13 in a plurality of plug-side contacts, respectively, as shown in FIG. 3, which shows the plug connector 11 as having the fitting maintaining member 16 provided therein removed. The portion is sandwiched and covered in the vertical direction in FIG. Then, the plug-side conductive shell 15 is formed with a pair of protruding portions 15a provided at both ends in the longitudinal direction (longitudinal direction (left-right direction) of the plug connector 11) with an array of a plurality of cables 13 interposed therebetween. Has been done.

The fitting maintenance member 16 provided on the plug-side conductive shell 15 so as to be rotatable with respect to the plug-side conductive shell 15 is formed by bending a rod-shaped body made of metal, for example, as shown in FIG. It is assumed that the frame-shaped portion 22 is provided and the cover portion 23 attached to the frame-shaped portion 22 is provided. Both ends of the frame-shaped portion 22 are engaged with a pair of protruding portions 15a formed at both ends in the longitudinal direction of the plug-side conductive shell 15, whereby the entire fitting maintenance member 16 is formed. , It is rotatably supported by the conductive shell 15 on the plug side. Further, the cover portion 23 is formed of a conductive plate-like body, and a plurality of elastic contact piece portions 23a and 23b are provided and fixed to the frame-shaped portion 22. Then, when the connection fitting portion 19 of the plug connector 11 is inserted into the receptacle-side insulating housing 20 of the receptacle connector 12 through the fitting opening portion 21 provided in the fitting maintenance member 16, the fitting maintenance member 16 is attached to the receptacle connector 12. It engages with the receptacle-side conductive shell 24 that partially covers the receptacle-side insulating housing 20, thereby maintaining the mating state of the plug connector 11 with the receptacle connector 12.

The fitting maintenance member 16 has a plug-side conductivity as shown in FIGS. 5 and 6, respectively, which show the VV line cross section and the VIV line cross section in FIGS. 1, 2, and 2. A first stationary position that is a raised position with respect to the shell 15 and a second stationary position that is a prone position with respect to the plug-side conductive shell 15 as shown in FIGS. 9 to 11 described later. And selectively. The fitting maintenance member 16 engages with the receptacle-side conductive shell 24 when the connection fitting portion 19 of the plug connector 11 is inserted into the receptacle-side insulating housing 20 through the fitting opening portion 21 provided therein. When the plug connector 11 is in a state of being fitted with the receptacle connector 12, the fitting maintenance member 16 is assumed to take a second stationary position.

Further, the receptacle connector 12 which constitutes an example of the connector device according to the present invention together with the plug connector 11 includes a receptacle-side insulating housing 20 formed of an insulating material such as synthetic resin. As shown in FIG. 4 showing a state in which the receptacle-side conductive shell 24 including the receptacle connector 12 is removed, the receptacle-side insulating housing 20 has the above-mentioned plug connector 11 on one of the mutually opposed end faces thereof. A fitting port 21 into which the connection fitting portion 19 is inserted is provided, and a connection fitting portion accommodating space extends from the fitting port 21 to the inside of the receptacle-side insulating housing 20. In the following, regarding the receptacle connector 12, one side of the mutually opposed end face portion provided with the fitting port 21 in the receptacle side insulating housing 20 is the front side, and the other side of the mutually opposed end face portion which is the opposite side of the front side is the other side. The back side is used, and the upper side, lower side, left side and right side facing the front side are upper, lower, left and right, respectively. The receptacle-side insulating housing 20 is arranged and fixed to, for example, the circuit board 60 shown in FIG. 12, which will be described later, so that the entire receptacle connector 12 is attached to the circuit board 60.

The receptacle-side insulating housing 20 is provided with a plurality of first contacts 25 and a plurality of second contacts 26 arranged in an alternating arrangement as shown in FIG. The first contact 25 and the second contact 26 together form a plurality of receptacle-side contacts. That is, the plurality of receptacle-side contacts arranged in the receptacle-side insulating housing 20 include the plurality of first contacts 25 and the plurality of second contacts 26. As shown in FIG. 2, each of the plurality of first contacts 25 has a first connection terminal portion 27 connected to a terminal portion provided on the circuit board 60 in which the receptacle-side insulating housing 20 is arranged. The front end face portion (one of the mutually opposed end face portions) of the receptacle side insulating housing 20 is projected to the outside of the receptacle side insulating housing 20, and each of the plurality of second contacts 26 is a receptacle side insulating housing 20. The second connection terminal portion 28 connected to the terminal portion provided on the circuit board 60 to which the circuit board 60 is arranged is connected to the receptacle side insulating housing 20 from the back surface side end surface portion (the other side of the mutually opposed end surface portions) of the receptacle side insulating housing 20. It is projected to the outside of. As a result, an array of the first connection terminal portions 27 is formed on the outer side of the front end face portion of the receptacle side insulating housing 20, and also on the outer side of the back side end face portion of the receptacle side insulating housing 20. Means that an array of second connection terminal portions 28 is formed.

In the plurality of receptacle-side contacts including the plurality of first contacts 25 and the plurality of second contacts 26, the connection fitting portion 19 of the plug connector 11 is provided through the fitting opening portion 21 provided in the receptacle-side insulating housing 20. When it is inserted into the receptacle-side insulating housing 20, it presses and contacts a plurality of plug-side contacts in the connection fitting portion 19 of the plug connector 11 inserted into the receptacle-side insulating housing 20. At that time, the plurality of first contacts 25 included in the plurality of receptacle side contacts each press contact with the plurality of contacts 17 included in the plurality of plug side contacts, and the plurality of first contacts included in the plurality of receptacle side contacts are in press contact with each other. The contact 26 of 2 makes a pressing contact with each of the plurality of contacts 18 included in the plurality of plug-side contacts. As a result, a plurality of plug-side contacts in the connection fitting portion 19 of the plug connector 11 inserted into the receptacle-side insulating housing 20 are provided on the circuit board 60 to which the receptacle connector 12 is attached via the plurality of receptacle-side contacts. It is connected to the terminal part.

Further, the receptacle-side conductive shell 24 provided in the receptacle connector 12 includes a peripheral portion of the fitting port 21 in the front-side end face portion of the receptacle-side insulating housing 20, a rear end surface portion and a portion in the vicinity thereof, and both sides in the left-right direction. It is intended to cover the rest of the surface except for a part of the face and most of the bottom. That is, the receptacle-side conductive shell 24 partially covers the receptacle-side insulating housing 20. The receptacle-side conductive shell 24 is provided with a flat plate-shaped portion 30 that extends along the longitudinal direction of the receptacle-side insulating housing 20 and covers the upper flat portion 29 of the receptacle-side insulating housing 20.

The receptacle-side conductive shell 24 has a plurality of substrate connecting portions 32 that bend downward from both ends in the longitudinal direction of the flat plate-shaped portion 30, and each of the plurality of substrate connecting portions 32 has a plurality of substrate connecting portions 32. , It is assumed that the receptacle connector 12 is connected to the ground conductor portion provided on the circuit board 60 to which the receptacle connector 12 is attached, for example, by soldering. Further, the receptacle-side conductive shell 24 has a strip-shaped terminal shield portion 33 supported by a pair of connecting portions 31 that are bent downward from both ends in the longitudinal direction of the flat plate-shaped portion 30. There is. The terminal shield portion 33 is arranged so as to surround the array of the plurality of first connection terminal portions 27 outside the array of the plurality of first connection terminal portions 27 each of the plurality of first contacts 25. It is said that. As a result, the plurality of first connection terminal portions 27 and the plurality of second connection terminal portions 28 are connected to the terminal portions provided on the circuit board 60 on which the receptacle-side insulating housing 20 is arranged, and are also connected to each other. When the plurality of substrate connecting portions 32 of the receptacle-side conductive shell 24 are connected to the grounding conductor portions provided on the circuit board 60, the terminal shield portions 33 are the plurality of first on the circuit board 60. A plurality of first connection terminal portions 27 are surrounded and arranged outside the arrangement of the connection terminal portions 27.

The terminal shield portion 33 is provided with a plurality of convex portions 34 and a soldering portion 35 forming a plurality of notched portions. When the connection fitting portion 19 of the plug connector 11 is inserted into the receptacle side insulating housing 20 through the fitting port 21 provided in the receptacle side insulating housing 20, the plurality of convex portions 34 are provided with the plug side conductivity of the plug connector 11. The plurality of cables 13 in the plurality of plug-side contacts of the sex shell 15 are pressed against the portions covering the connected portions. Further, the plurality of soldering portions 35 are provided for soldering connection to the ground conductor portion provided on the circuit board 60 of the terminal shield portion 33 arranged on the circuit board 60.

As shown in FIG. 5 showing a VV line cross section in FIG. 2, each of the plurality of first contacts 25 included in the plurality of receptacle-side contacts in the receptacle connector 11 is a pair of upper arms forming a bifurcated portion. It has a portion 41 and a lower arm portion 42. The upper arm portion 41 is formed with a contact portion 43 at the tip portion thereof, and the lower arm portion 42 is formed with a contact portion 44 at an intermediate portion thereof and both end portions sandwiching the contact portion 44. A first connection terminal portion 27 and a locking portion 46 held by the receptacle-side insulating housing 20 are formed therein.

Each of the plurality of first contacts 25 is formed by, for example, punching a conductive plate-like member having elasticity. When the entire receptacle connector 12 is attached to the circuit board 60, the connection terminal portion 27 formed at one end of the lower arm portion 42 is electrically soldered to the terminal portion of the circuit board 60, for example. Connected to.

Further, as shown in FIG. 6 showing the VI-VI line cross section in FIG. 2, each of the plurality of second contacts 26 included in the plurality of receptacle-side contacts in the receptacle connector 12 also forms a pair of bifurcated portions. It has an upper arm portion 47 and a lower arm portion 48. A contact portion 49 is formed at the tip portion of the upper arm portion 47, and a contact portion 50 and a second connection terminal portion 28 are formed at both end portions of the lower arm portion 48, respectively. At the same time, a locking portion 51 held by the receptacle-side insulating housing 20 is formed in the intermediate portion.

Each of the plurality of second contacts 26 is also formed by, for example, punching a conductive plate-shaped member having elasticity. When the entire receptacle connector 12 is attached to the circuit board 60, the connection terminal portion 28 formed at the other end of the lower arm portion 48 is, for example, soldered to the terminal portion of the circuit board 60 to generate electricity. Connected to.

7 (plan view) and 8 (side view) show that the plug connector 11 to which the plurality of cables 13 are mounted is placed in a state in which the fitting maintaining member 16 provided therein takes the first stationary position. Then, the connection fitting portion 19 (see FIG. 2) of the plug-side insulating housing 14 of the plug connector 11 is inserted into the receptacle-side insulating housing 20 through the fitting port 21 provided in the receptacle-side insulating housing 20 of the receptacle connector 12. , An example of the connector device according to the present invention in which the plug connector 11 and the receptacle connector 12 are in a mutually fitted state is shown.

When the connection fitting portion 19 of the plug connector 11 is inserted into the receptacle side insulating housing 20 through the fitting port 21 provided in the receptacle side insulating housing 20 of the receptacle connector 12, it is shown in FIG. 10 described later. As described above, the connection fitting portion 19 of the plug connector 11 is sandwiched between the pair of upper arm portions 41 and the lower arm portion 42 forming a bifurcated portion of each of the plurality of first contacts 25 of the receptacle connector 12. Be placed. Then, on the upper surface side of the connection fitting portion 19 of the plug connector 11, contact portions 43 formed on the pressure receiving contact portions 52 of the plurality of contacts 17 and the upper arm portion 41 of the corresponding first contact 25 are provided. Along with the press contact, the plug connector 11 is formed on the lower surface side of the connection fitting portion 19, each of the pressure receiving contact portions 53 of the plurality of contacts 17, and the lower arm portion 42 of the corresponding first contact 25. The contact portion 44 comes into pressure contact.

Further, when the connection fitting portion 19 of the plug connector 11 is inserted into the receptacle side insulating housing 20 through the fitting port 21 provided in the receptacle side insulating housing 20 of the receptacle connector 12, FIG. 11 will be described later. As shown, the connection fitting portion 19 of the plug connector 11 is also sandwiched by a pair of upper arm portions 47 and lower arm portions 48 that form a bifurcated portion of each of the plurality of second contacts 26 of the receptacle connector 12. Be in a state of being Then, on the lower surface side of the connection fitting portion 19 of the plug connector 11, contact portions 50 formed on the lower arm portions 48 of the second contact 26 corresponding to the pressure-receiving contact portions 54 of the plurality of contacts 18 are provided. A contact formed on the upper surface side of the connection fitting portion 19 of the plug connector 11 and on the pressure receiving contact portion 55 of each of the plurality of contacts 18 and on the upper arm portion 47 of the corresponding second contact 26. The portion 49 comes into pressure contact.

Further, when the connection fitting portion 19 of the plug connector 11 is inserted into the receptacle side insulating housing 20 through the fitting opening portion 21 provided in the receptacle side insulating housing 20 of the receptacle connector 12, the receptacle connector 12 is provided. The terminal shield portion 33 in the receptacle-side conductive shell 24 has a plurality of convex portions 34 (see FIG. 2) provided therein, and a plurality of plug-side contacts in the plug-side conductive shell 15 provided in the plug connector 11. It is assumed that the plurality of cables 13 in the above are pressed against the portions covering the connected portions, whereby the terminal shield portion 33 is placed in an electrically connected state with the plug-side conductive shell 15.

After that, with the plug connector 11 and the receptacle connector 12 in a mutually fitted state as described above, FIGS. 10 and 10 showing the X-X line cross section in FIGS. 9 and 9 and XI-XI in FIG. 9 As shown in FIG. 11 showing the line cross section, when the fitting maintenance member 16 provided in the plug connector 11 is moved from the first stationary position to the second stationary position, the fitting maintenance member 16 is moved. It engages with the receptacle-side conductive shell 24 of the receptacle connector 12, thereby maintaining the mating state of the plug connector 11 with the receptacle connector 12. In such a case, as shown in FIG. 12, the receptacle connector 12 has its receptacle-side insulating housing 20 arranged on the circuit board 60 and attached to the circuit board 60.

In the receptacle connector 12 attached to the circuit board 60, each of the plurality of board connection portions 32 (see FIG. 2) in the receptacle-side conductive shell 24 is attached to the ground conductor portion provided on the circuit board 60, for example. , A ground potential is applied to the receptacle-side conductive shell 24, which is connected by soldering, and first connection terminal portions 27 for each of the plurality of first contacts 25 are provided on the circuit board 60. The second connection terminal 28 of each of the plurality of second contacts 26 is connected to the terminal portion provided on the circuit board 60, and is connected to the terminal portion provided on the circuit board 60. The terminal shield portion 33 in the above is arranged on the circuit board 60 so as to surround the array of the plurality of first connection terminal portions 27 outside the array of the plurality of first connection terminal portions 27. The plurality of soldering portions 35 in the above are soldered and connected to the ground conductor portions provided on the circuit board 60.

The plug connector 11 is moved to the second stationary position, engages with the receptacle-side conductive shell 24 of the receptacle connector 12, and maintains the mated state of the plug connector 11 with the receptacle connector 12. In the provided fitting maintenance member 16, as shown in FIG. 12, the cover portion 23 covers the receptacle-side conductive shell 24 of the receptacle connector 12 as a whole. Then, each of the plurality of elastic contact piece portions 23a provided on the cover portion 23 presses and contacts the plug-side conductive shell 15 in the plug connector 11, and is in an electrically connected state with the plug-side conductive shell 15. At the same time, each of the plurality of elastic contact piece portions 23b (see FIG. 1) provided on the cover portion 23 presses and contacts the receptacle-side conductive shell 24, and is in an electrically connected state with the receptacle-side conductive shell 24. I'm sick. As a result, a ground potential is applied to the fitting maintenance member 16 including the plug-side conductive shell 15 and the cover portion 23 via the receptacle-side conductive shell 24.

In this way, when the receptacle connector 12 attached to the circuit board 60 and the plug connector 11 to which the plurality of cables 13 are attached are placed in a mutually fitted state, the plurality of connectors attached to the plug connector 11 are attached. Cable 13 includes a plurality of plug-side contacts including a plurality of contacts 17 and a plurality of contacts 18 in the plug connector 11 and a plurality of first contacts 25 and a plurality of second contacts 26 in the receptacle connector 12. However, it is assumed that the connector is connected to the terminal portion provided on the circuit board 60 through a plurality of receptacle-side contacts. Under such circumstances, the terminal shield portion 33 (see FIG. 1) in the receptacle-side conductive shell 24 provided in the receptacle connector 12 has a plurality of first contacts 25 in the receptacle connector 12 on the circuit board 60. The ground potential is applied while surrounding the arrangement of the plurality of first connection terminal portions 27, respectively, and being placed in an electrically connected state with the plug-side conductive shell 15 provided in the plug connector 11. By doing so, an electromagnetic shielding action is provided on the plurality of first connection terminal portions 27 each of the plurality of first contacts 25 in the receptacle connector 12. That is, the plurality of first connection terminal portions 27 arranged on the circuit board 60 are subjected to the electromagnetic shielding action by the terminal shield portion 33 in the receptacle-side conductive shell 24 to introduce electromagnetic noise from the outside or to the outside. It is supposed that the leakage of electromagnetic noise is prevented.

Further, on the circuit board 60, the arrangement of the plurality of second connection terminal portions 28 (see FIG. 2) each of the plurality of second contacts 26 in the receptacle connector 12 has the receptacle-side conductive shell 24 in the receptacle connector 12. Is covered by the cover portion 23 of the fitting maintenance member 16 provided in the plug connector 11, which is intended to cover the entire plug connector 11. Since the ground potential is applied to the fitting maintenance member 16 including the cover portion 23 via the receptacle-side conductive shell 24, a plurality of second connection terminal portions 28 arranged on the circuit board 60 However, it is assumed that the cover portion 23 of the fitting maintenance member 16 receives the electromagnetic shielding action to prevent the introduction of electromagnetic noise from the outside or the leakage of electromagnetic noise to the outside.

As described above, in the example of the connector device according to the present invention including the plug connector 11 and the receptacle connector 12, the receptacle connector 12 provided with the receptacle-side insulating housing 20 arranged on the circuit board 60. However, the plurality of first connection terminal portions 27 each of the plurality of first contacts 25 are connected to the receptacle side insulating housing 20 from the front side end surface portion (one of the mutually opposed end surface portions) of the receptacle side insulating housing 20. It is assumed that the plurality of second contacts 26 project to the outside and are connected to the circuit board 60, and the plurality of second connection terminal portions 28 each of the plurality of second contacts 26 are connected to the rear end surface portions (mutually opposed to each other) of the receptacle side insulating housing 20. A plurality of cables 13 in the plug-side insulating housing 14 included in the plug connector 11 are connected to each other, assuming that they are connected to the circuit board 60 by projecting from the other end surface portion) to the outside of the receptacle-side insulating housing 20. The connection fitting portion 19 in which the plurality of plug-side contacts (plural contacts 17 and 18) are arranged in an array is inserted into the fitting opening portion 21 provided on the front end surface portion of the receptacle-side insulating housing 20. When the plug connector 11 is in a mated state with the receptacle connector 12, the terminal shield portion 33 of the receptacle-side conductive shell 24 of the receptacle connector 12 has a plurality of first connections each of the plurality of first contacts 25. Under the arrangement of the terminal portions 27 surrounding the arrangement, the plug connector 11 abuts on the plug-side conductive shell 15 that covers the portion to which the plurality of cables 13 are connected in the plurality of plug-side contacts. It is supposed to be in contact, thereby providing an electromagnetic shielding action on the plurality of first connection terminal portions 27, which each of the plurality of first contacts 25 in the receptacle connector 12 has.

Therefore, according to the above-mentioned example of the connector device according to the present invention, the receptacle connector 12 is configured to include a plug connector 11 to which a plurality of cables 13 are mounted and a receptacle connector 12 to which the plug connector 11 is fitted. A fitting port 21 into which the connection fitting portion 19 of the plug connector 11 is inserted is provided on the front end surface portion, and the receptacle side insulating housing 20 is provided on the circuit board 60, and is arranged in the receptacle side insulating housing 20. The first of each of the plurality of first contacts 25, under the condition that the plurality of receptacle-side contacts made include the plurality of first contacts 25 and the plurality of second contacts 26 arranged alternately. The connection terminal portion 27 of the above is connected to the circuit board 60 by projecting from the front end surface portion of the receptacle-side insulating housing 20 to the outside, and the second connection terminal portion 28 of each of the plurality of second contacts 26 is a receptacle. The plug connector 11 is connected to the receptacle connector 12 even when the overall size and thickness are reduced by projecting from the rear end surface portion of the side insulating housing 20 to the outside and connecting to the circuit board 60. When placed in the mated state, it is possible to provide an effective electromagnetic shielding action on the plurality of first connection terminal portions 27 each of the plurality of first contacts 25.

Further, in an example of the connector device according to the present invention, when the plug connector 11 is put into the mated state with the receptacle connector 12, a plurality of second connections each of the plurality of second contacts 26 have. The electromagnetic shielding action on the terminal portion 28 can be brought about by the cover portion 23 included in the fitting maintenance member 16 provided on the plug connector 11. In such a case, while the plug connector 11 is placed in the fitted state with the receptacle connector 12, the cover portion 23 of the fitting maintaining member 16 included in the plug connector 11 is provided, and the fitting maintaining member 16 is conductive on the receptacle side. When engaged with the sex shell 24, it is intended to cover the arrangement of the plurality of second connection terminals 28 in the receptacle connector 12, whereby the plurality of second contacts 26 provided in the receptacle connector 12 each have. It provides an electromagnetic shielding action on the plurality of second connection terminal portions 28.

The connector device according to the present invention as described above is configured to include a plug connector to which a plurality of cables are mounted and a receptacle connector to which the plug connector is fitted, and the receptacle connector is one of a pair of mutually opposed end faces. A fitting port for inserting a connection fitting portion of a plug connector is provided in the circuit board to provide a receptacle-side insulating housing arranged on a circuit board, and a plurality of receptacle-side contacts arranged in an array on the receptacle-side insulating housing are alternately arranged. Under the condition that the plurality of first contacts and the plurality of second contacts are included, the connection terminals of the plurality of first contacts are connected from one of the mutually opposed end faces of the receptacle side insulating housing. A connector that protrudes to the outside and is connected to the circuit board, and a connector portion of each of the plurality of second contacts protrudes to the outside from the other end face portion of the insulating housing on the receptacle side and is connected to the circuit board. Therefore, even when the overall size and thickness are reduced, when the plug connector is placed in the mated state with the receptacle connector, it is effective for each connection terminal of a plurality of receptacle side contacts. It can be widely applied to various electronic devices and the like as it can bring about an electromagnetic shielding action.

11 ... Plug connector, 12 ... Receptacle connector, 13 ... Cable, 14 ... Plug side insulating housing, 15 ... Plug side conductive shell, 16 ... Fitting maintenance member, 17, 18 ... Contact, 19 ... Connection fitting part, 20 ... Receptacle side insulating housing, 21 ... Fitting port part, 22 ... Frame-shaped part, 23 ... Cover part, 24 ... -Receptacle side conductive shell, 25 ... 1st contact, 26 ... 2nd contact, 27 ... 1st connection terminal, 28 ... 2nd connection terminal, 29 ...・ Upper flat part, 30 ・ ・ ・ flat plate part, 31 ・ ・ ・ connecting part, 32 ・ ・ ・ board connection part, 33 ・ ・ ・ terminal shield part, 34 ・ ・ ・ convex part, 35 ・ ・ ・ soldering part , 41, 47 ... upper arm part, 42, 48 ... lower arm part, 43, 44, 49, 50 ... contact part, 46, 51 ... locking part, 52, 53, 54, 55 ・ ・ ・ Pressure receiving contact part 60 ・ ・ ・ Circuit board

Claims (6)

A plug-side insulating housing having a connection fitting portion in which a plurality of plug-side contacts to which a plurality of cables are connected are arranged, and a plug covering the portion of the plurality of plug-side contacts to which the plurality of cables are connected. With a plug connector with a side conductive shell,
Receptacle-side insulating housing having a pair of mutually opposed end faces, one of which is provided with a fitting port into which the connection fitting of the plug connector is inserted, and arranged on a circuit board, the receptacle side. It is arranged in a receptacle-side conductive shell that partially covers the insulating housing and is connected to the circuit board to which a ground potential is applied, and the receptacle-side insulating housing, and is arranged in the receptacle-side insulating housing through the fitting port. A plurality of receptacle-side contacts are provided, each of which presses and contacts a plurality of plug-side contacts arranged in the connection fitting portion of the plug connector inserted, and each of the plurality of receptacle-side contacts is one of the mutually opposed end face portions. A plurality of first contacts having a first connection terminal portion that protrudes from the outside of the receptacle side insulating housing and is connected to the circuit board, and each of the receptacle side from the other of the mutually opposed end face portions. A receptacle connector comprising a plurality of second contacts, alleged to have a second connection terminal portion projecting to the outside of the insulating housing and connected to the circuit board.
Consists of including
The receptacle-side conductive shell is arranged so as to surround the array of the plurality of first connection terminals outside the array of the plurality of first connection terminals each of the plurality of first contacts. A connector device comprising a terminal shield portion that abuts and contacts the plug-side conductive shell when the connection fitting portion of the plug connector is inserted into the receptacle-side insulating housing through the fitting port portion. The connector device according to claim 1, wherein the terminal shield portion is provided with a convex portion that presses and contacts the plug-side conductive shell. A plurality of first connection terminal portions each of the plurality of first contacts and a plurality of second connection terminal portions each of the plurality of second contacts are connected to the terminal portions provided on the circuit board. The connector device according to claim 1, wherein the terminal shield portion is arranged on the circuit board. The connector device according to claim 3, wherein the terminal shield portion is provided with a soldered portion to be soldered to a ground conductor portion provided on the circuit board. The connector according to claim 3, wherein the terminal shield portion is bent and extended from a portion of the receptacle-side conductive shell that partially covers the receptacle-side insulating housing and is arranged on the circuit board. apparatus. The plug connector is rotatably provided with respect to the plug-side conductive shell and is electrically connected to the plug-side conductive shell, and the connection fitting portion of the plug connector is connected to the receptacle-side insulating housing. A fitting maintaining member that engages with the receptacle-side conductive shell to maintain the mating state of the plug connector with the receptacle connector when inserted through the fitting port is provided, and the fitting maintaining member is the above. The claim is characterized by having a cover portion that covers an arrangement of a plurality of second connection terminal portions each of the plurality of second contacts provided in the receptacle connector when engaged with a receptacle-side conductive shell. 1. The connector device according to 1.

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