JP4652890B2 - Receptacle - Google Patents

Description

  The present invention relates to a receptacle for electrical connection. In particular, the present invention relates to a receptacle in which an opening from which a mating connector (plug) is inserted / extracted is covered with a shutter and an electrostatic countermeasure is taken.

  Recent electronic devices such as DSC (Digital Still Camera) and camera-equipped mobile phones are capable of capturing image data into a desktop personal computer. In such a small electronic device, a receptacle serving as an interface connector (or I / O connector) for transmitting image data is mounted. In many cases, an electronic device having this receptacle uses a connection table (also called a docking station) called a cradle.

  The cradle and the desktop personal computer are connected by, for example, a USB cable, a receptacle is mounted on the outer surface of the electronic device, a plug is mounted on the cradle, and the receptacle on the electronic device side and the plug on the cradle side are connected, Data can be transferred quickly and reliably between electronic devices and desktop computers. The simplest cradle can be a charger for a mobile phone. In recent years, a DC power supply terminal, an AV output terminal, and a USB connector are mounted on the cradle, and the receptacle and the plug are a so-called multiconnector that connects all these terminals.

  When the connector on the electronic device side (receptacle) and the connector on the cradle side (plug) are not connected, the contact on the electronic device side receptacle is exposed, so the opening of the receptacle is covered with a metal plate shutter, for example Prevents electrostatic breakdown inside electronic equipment due to human contact. In addition, the receptacle housing is shielded by a metal plate shell, and the shell is electrically connected to the shutter of the metal plate, thereby taking measures against EMI (Electro Magnetic Interference).

  As a receptacle for preventing electrostatic breakdown as described above, a receptacle has been invented that reduces the size and thickness of a connector with a shutter and makes it difficult for dust to enter (for example, see Patent Document 1).

In the connector with shutter according to Patent Document 1, a housing is formed with a fitting recess and a pair of bearing recesses, and a shutter that is slidable in the fitting direction within the fitting recess and the pair of bearing recesses is made of a synthetic resin first. It consists of one shutter and a metal second shutter. Then, the plate surface contour of the second shutter is shaped to fit within the plate surface contour of the first shutter and is locked to the first shutter. The pair of engagement shafts of the first shutter are engaged with a pair of coil springs housed in the pair of bearing recesses, and the first and second shutters are urged toward the front side. When the connector is not fitted, the first and second shutters cover the opening of the fitting recess to prevent electrostatic breakdown.
JP 2003-36921 A

  FIG. 10 is a perspective exploded view of a connector with a shutter in which a housing according to Patent Document 1 is simplified. FIG. 10 of the present application corresponds to FIG. In FIG. 10, a conventional connector 100 includes an insulating housing 6, an insulating first shutter 71, and a second shutter 72 formed of a thin metal plate. The connector 100 includes a pair of compression coil springs 8a and 8b, a pair of metal frame fittings 8c and 8d formed in a C shape, and a shell 9 formed of a thin metal plate.

  In FIG. 10, the housing 6 is formed with a fitting recess 61 opened to the front side, and a pair of bearing recesses 61a and 61b communicating with both sides of the fitting recess 61 and opened to the front side. . The fitting recess 61 is formed in a shape that allows the fitting protrusion of the mating plug to be fitted. The pair of compression coil springs 8a and 8b are accommodated in the pair of bearing recesses 61a and 61b, respectively. The fitting recess 61 is provided with a plurality of contacts (not shown).

  The first shutter 71 is formed in a long and thin plate shape, and is slidable in the fitting recess 61 and the pair of bearing recesses 61a and 61b. On both wings of the first shutter 71, a pair of engagement shafts 71a and 71b projecting in a columnar shape, and a pair of locking holes 71c and penetrating along the central axis of the pair of engagement shafts 71a and 71b. 71d is formed. The pair of compression coil springs 8a and 8b has front end portions engaged with outer peripheral portions of the pair of engagement shafts 71a and 71b.

  The second shutter 72 has a plate surface contour that is slightly smaller than the plate surface contour of the first shutter 71, and a pair of locking pieces 72 c and 72 d project from both wings of the second shutter 72. Yes. The pair of locking pieces 72c and 72d are press-fitted into the pair of locking holes 71c and 71d, so that the first shutter 71 and the second shutter 72 are integrated.

  The pair of frame fittings 8c and 8d are press-fitted and locked to both wings of the housing 6, thereby accommodating the pair of compression coil springs 8a and 8b in the housing 6 in a compressed state and elastically contacting the second shutter 72. And getting an electrical connection. The shell 9 is a quadrangular annular body 91 that covers the outer periphery excluding the front and rear surfaces of the housing 6, and a pair of covering pieces 91 a and 91 b in which both wings of the quadrangular annular body 91 are bent, and the rectangular annular body 61. A cover piece 91c bent upward from the bottom plate is formed. The pair of cover pieces 91a and 91b and the cover piece 91c form an opening into which the fitting convex portion of the mating plug can be inserted. The shell 9 shields the connector 100 by covering the housing 6.

  The connector with a shutter shown in FIG. 10 has many components, and it may be considered to simplify the configuration by devising the configuration and structure. A connector (receptacle) with a shutter having a simple configuration that is provided with countermeasures against static electricity and EMI is desired.

  Further, in the connector with shutter shown in FIG. 10, when the insertion depth of the mating plug is increased, that is, when the total length of the compression coil spring when not compressed is increased, the compression coil spring is compressed and the compression coil is compressed. There is a concern that the compression coil spring may be deformed and compressed by deviating from the axis of the spring. It is considered that when the connector mounting height is lowered, that is, when the outer diameter of the compression coil spring is reduced, the deformation and compression of the compression coil spring becomes more remarkable. For example, it is conceivable that the shutter does not reciprocate. In a low-profile connector with a shutter, a structure in which a compression coil spring can expand and contract correctly is required. These can be said to be the problems of the present invention.

  SUMMARY OF THE INVENTION In view of such problems, the present invention provides a receptacle with a shutter in which countermeasures against static electricity and EMI are taken, and a compression coil spring that biases the shutter correctly expands and contracts and has a simple configuration. For the purpose.

  In order to satisfy the above object, the inventor has a structure in which a part of the shell that shields the housing guides the inner diameter of the compression coil spring, and has invented the following receptacle with a shutter.

  (1) A housing in which a substantially rectangular parallelepiped header portion into which a mating plug is fitted protrudes from a frame portion, a plurality of contacts arranged in parallel in a direction opposite to each other by being locked to the header portion, A substantially rectangular tube-shaped shell having a first opening through which a mating plug is inserted and removed so as to surround the header portion, and a second opening in which the frame portion is disposed facing the first opening, A receptacle comprising: a shutter movable in a direction in which a mating plug is inserted and removed; and a pair of compression coil springs disposed on both blades of the shutter and biasing the shutter toward the first opening, The shell has a pair of guide pieces that extend to both wings of the first opening and bend at a substantially right angle, and extend from the first opening side to the second opening side, and the shutter has the pair of guiding pieces. Slidable pair of holes are provided, the pair of guide pieces, a receptacle for guiding the pair of holes and the inner diameter of the compression coil spring of the shutter.

  The receptacle according to the invention of (1) includes a housing that protrudes from a frame portion of a substantially rectangular parallelepiped header portion into which a mating plug is fitted. Moreover, it is provided with a plurality of contacts arranged in a pair in a direction opposite to each other while being locked to the header portion. Furthermore, a substantially rectangular tube-shaped shell having a first opening through which the mating plug is inserted and removed so as to surround the header part and a second opening in which the frame part is built facing the first opening is provided.

  Generally, a receptacle is defined as a fixed-side connector attached to a panel, and a male contact is usually inserted in a shell-type multipolar connector. For example, a male contact is defined as a contact that enters a female contact and makes an electrical connection on its outer surface, and includes a type such as a pin, a post, and a tab. However, since it is a connector into which a male contact is inserted, it is not a receptacle. For example, a female contact may be inserted into the receptacle, or a hermaphroditic contact may be inserted. The receptacle is connected to the plug. Here, the connection may be a mechanical and electrical connection.

  The receptacle according to the present invention may be, for example, a fixed connector attached to a frame of a DSC (so-called digital camera). The receptacle according to the present invention may be a shell-type multi-pole connector and includes a plurality of contacts. For example, the mating plug may be a connector mounted on a cradle, and the mating plug may be a connector attached to a cable end.

  The receptacle according to the present invention may be a connector for a printed circuit board to be mounted on a printed circuit board. As will be described later, a horizontally mounted connector in which a mating plug is coupled from a direction parallel to the component mounting surface of the printed circuit board. The connector may be a so-called side-type connector, or a vertically-mounted connector in which a mating plug is coupled from a direction orthogonal to the component mounting surface of the printed circuit board, a so-called top-type connector. Either the side type or the top type may be selected depending on the arrangement of the printed circuit boards.

  The housing may have an insulating property and may be a housing made of a non-conductive material. For example, an engineering plastic is molded and a substantially rectangular parallelepiped header portion into which a mating plug is fitted is framed. An insulating housing having a desired shape protruding from the portion can be obtained.

  The contact has conductivity in order to be electrically connected to the contact provided on the counterpart plug, and is preferably made of a metal having conductivity. For example, the contact is formed of a metal plate having a low electrical resistance value such as a copper alloy. For example, the contact according to the present invention may be a plate contact made of a copper alloy plate.

  For example, a pair of side surfaces formed in opposite directions in the substantially rectangular parallelepiped header portion are provided with a plurality of vertically long grooves extending from the proximal end of the header portion to the vicinity of the distal end portion. The plurality of vertically long grooves penetrate the frame portion. Then, the contact is press-fitted into the groove from the frame portion side and is locked to the header portion. Thus, a connector in which a plurality of contacts are locked to a housing and arranged in parallel in a pair in opposite directions is called a dual in-line connector. The dual in-line connector has two rows of contacts.

  The plurality of contacts are slightly depressed and locked in a groove formed in the header portion, so that the contacts are not short-circuited even when a shutter made of a metal plate described later moves the header portion. .

  For example, the lead of the contact extending from the frame portion is bent at a right angle, and the tip of the lead is soldered to the printed circuit board, whereby the receptacle can be a side type connector. This receptacle can be used as a top type connector by soldering the tip of the contact lead extending from the frame portion to the printed circuit board.

  For example, by shifting the pitch of the lead tips of a plurality of contacts locked to one side surface of the header portion and the pitch of the lead tips of a plurality of contacts locked to the other side surface of the header portion by a half pitch The plurality of lead tips are arranged in a staggered shape. In addition, the mounting area of the receptacle on the printed circuit board can be reduced.

  The shell has conductivity and is preferably made of a metal having conductivity. For example, the shell is formed of a metal plate having a low electric resistance value such as a copper alloy. For example, a copper alloy plate has good workability, and a desired substantially rectangular tube-shaped shell having a first opening and a second opening can be obtained by bending or punching the copper alloy plate.

  The shell constitutes the outer shell of the receptacle, so that the receptacle is shielded. The receptacle of the present invention may be a connector designed to prevent radiation of electromagnetic interference from the outside to the inner conductor (contact) and from the inner conductor (contact). As will be described later, the effect of preventing electromagnetic interference is further enhanced by grounding a pair of locking pieces provided on both wings of the shell to the ground pattern of the printed circuit board.

  For example, a pair of locking holes (indent) is provided on one surface of the shell, a pair of locking projections (detent) is provided on one surface of the frame portion, and the pair of locking holes and the pair of locking projections are fitted. By combining, the shell and the housing may be securely held at a predetermined position. One surface of the shell may be provided with a pair of locking holes into which a pair of lock arms provided on the mating plug are fitted and locked. A plurality of bosses may be provided on the other surface opposite to one surface of the shell so that the shell does not come into full contact with the mounting surface of the printed circuit board. By providing the boss in this manner, a pattern can be formed on the mounting surface of the printed board facing the other surface of the shell.

  For example, in a state where the shell and the housing are assembled, the leading end surface of the header portion is flush with the first opening surface, and the rear surface of the frame portion facing the leading end surface of the header portion is the first portion except for a part of the frame portion. It may be flush with the two opening surfaces. On the rear surface of the frame portion and the second opening side of the shell, a notch groove may be provided in which lead portions of a plurality of contacts are extended and exposed.

  The receptacle according to the invention of (1) includes a shutter that can move in the direction in which the mating plug is inserted and removed from the shell. In addition, a pair of compression coil springs are provided on both blades of the shutter to urge the shutter toward the first opening.

  The shutter has conductivity and is preferably made of a metal having conductivity. For example, the shutter is preferably formed of a metal plate having a low electrical resistance value, such as a copper alloy, like the shell, but is not limited to a copper alloy plate. The shell is not limited to the copper alloy plate.

  For example, the shutter is formed in a flat plate shape, and its outer shape forms a rectangular outline slightly smaller than the outline of the inner wall of the shell. The shutter is urged by a pair of compression coil springs disposed on both wings of the shutter to close the first opening from the inside of the shell. And the electrostatic breakdown inside the electronic device by the contact of a human body is prevented. Further, dust is prevented from entering the receptacle.

  For example, the shutter is prevented from jumping out of the first opening by a pair of guide pieces extending to both wings of the first opening to be described later or one or more first bent pieces to be described later. The shutter is brought into contact with these guide pieces or the first bent piece, whereby the shutter and the shell are electrically connected, and the first opening and the four surfaces adjacent to the first opening are shielded, thereby The prevention effect is further increased.

  In the receptacle according to the invention of (1), the shell has a pair of guide pieces extending from both wings of the first opening, bent at a substantially right angle, and extending from the first opening side to the second opening side. The shutter is provided with a pair of slidable holes in the pair of guide pieces. The pair of guide pieces guide the pair of holes of the shutter and the inner diameter of the compression coil spring.

  For example, one surface of the shell may be a first side surface having a large area, and the other surface of the shell facing the first side surface may be a second side surface having substantially the same area as the first side surface. For example, the second side surface is disposed to face the mounting surface of the printed board. Then, third and fourth side surfaces having a small area are formed adjacent to the first side surface and the second side surface. The shell has a shape surrounded by the first to fourth side surfaces by bending a metal plate developed in a predetermined shape. The first opening and the second opening are rectangular.

  Here, the pair of guide pieces extends to both wings of the first opening and is bent at a substantially right angle. For example, in a developed metal plate that forms a shell, a T-shape is previously formed on each of the third and fourth side surfaces. The pair of T-shaped bent pieces may be bent at a right angle and face each other in the first opening. The pair of bent pieces are flush with the first opening surface.

  The pair of guide pieces extends from the first opening side to the second opening side. For example, the longer protruding piece of the T-shaped bent piece is bent at a right angle so that the inside of the shell is the first opening side. To the second opening side. The pair of guide pieces are arranged in parallel with each other in the shell.

  The pair of holes slidable on the pair of guide pieces are formed in a rectangular shape, for example. Further, for example, a rectangular hole through which the header part can enter and exit is provided in the central part of the shutter. For example, the cross-sectional shape of the guide piece may be rectangular, and the outer shape of the guide piece is formed slightly smaller than the inner diameter of the compression coil spring. And a pair of guide piece guides the internal diameter of a compression coil spring with the external shape.

  When the mating plug is inserted into the receptacle configured as described above, the shutter is guided by the pair of guide pieces and moved parallel to the second opening side. On the other hand, the pair of compression coil springs are compressed, but the outer shape guides the inner diameter of the compression coil spring, so that the compression coil spring is prevented from being deformed and compressed as in the prior art. The present invention realizes a structure in which a compression coil spring correctly expands and contracts in a low-profile receptacle with a shutter.

  The pair of compression coil springs are, of course, conductive metal bodies, and the compression coil springs are insulated as in the conventional case by always contacting the pair of guide pieces, that is, by always conducting to the shell. Thus, there is an effect that static electricity is not charged.

  The receptacle according to the present invention has a simplified structure as compared with the conventional one. For example, in the receptacle according to Patent Document 1, the shutter is constituted by a conductive shutter and an insulating shutter, whereas in the receptacle according to the present invention, the shutter is constituted only by a conductive shutter. Further, the receptacle according to the present invention eliminates the need for a pair of frame fittings used in the receptacle according to Patent Document 1. The receptacle according to the present invention has a simplified structure by integrally molding a pair of guide pieces and the like with a shell.

  (2) The shell has one or more first bent pieces that are in contact with the shutter on the first opening side, and the first bent pieces serve as a key for specifying the mating plug. The receptacle according to (1).

  For example, by changing the number of the first bent pieces and the position protruding into the first opening, it is possible to prevent erroneous insertion of a counterpart plug other than the specific counterpart plug. Further, the one or more first bent pieces may be a polarity key that allows insertion of the mating plug in one fixed direction.

  (3) The shell has a pair of second bent pieces opposed to the second opening side, and the pair of second bent pieces locks the tip portions of the pair of guide pieces (1) or (2) The receptacle according to the description.

  For example, the pair of second bent pieces extends in advance from the first side surface, and after the shutter, the pair of compression coil springs, and the housing with contacts are assembled in the shell, the pair of second bent pieces are bent. Then, it is locked to the tip portions of the pair of guide pieces. For example, a locking hole is formed at the tip of the pair of second bent pieces, and the tip of the guide piece is fitted and locked into the locking hole.

  In general, it is difficult to automate the assembly operation of the compression coil spring. As described above, the assembly operation is efficiently performed when the compression coil spring is assembled manually. Further, the pair of second bent pieces has a function of supporting the pair of guide pieces at both ends. And the bending of a pair of guide piece is prevented.

  (4) The receptacle according to any one of (1) to (3), wherein a pair of locking pieces mounted on a printed circuit board is provided on both wings of the shell.

  The pair of locking pieces may be solder-bonded to the printed board, or may be a solderless connection that is press-in connected to a plated through hole formed in the printed board.

  (5) The receptacle according to (4), which is a horizontally mounted connector to which the mating plug is coupled in a direction parallel to the component mounting surface of the printed circuit board.

  The receptacle according to the present invention may sometimes be a vertically mounted connector in which a mating plug is coupled from a direction orthogonal to the component mounting surface of the printed circuit board.

  The receptacle according to the present invention is composed of a housing, a plurality of contacts, a shell, a shutter, and a pair of compression coil springs. Has been simplified. In addition, since the shutter moves while being guided by the pair of guide pieces, a structure in which the compression coil spring expands and contracts correctly is realized.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 is an exploded perspective view showing an embodiment of a receptacle according to the present invention. FIG. 2 is a perspective external view of the receptacle according to the embodiment. FIG. 3 is a perspective external view of the receptacle according to the embodiment. FIG. 3 looks at the receptacle from a different direction than FIG. FIG. 4 is an internal configuration diagram of the receptacle according to the embodiment.

  FIG. 5 is a front view of the receptacle according to the embodiment. FIG. 6 is a bottom view of the receptacle according to the embodiment. 7 is a cross-sectional view taken along line YY in FIG. 8 is a cross-sectional view taken along the line ZZ in FIG. FIG. 9 is a perspective external view of the receptacle according to the embodiment. FIG. 9 looks at the receptacle from a different direction than FIG.

  First, the structure of the receptacle according to the present invention will be described. In FIG. 1, a receptacle 10 includes a housing 1 that projects a substantially rectangular parallelepiped header portion 1a into which a mating plug (not shown) is fitted from a frame portion 1b. The receptacle 10 includes a plurality of contacts 2 that are engaged with the header portion 1a and arranged in a pair in opposite directions. The receptacle 10 is a substantially rectangular tube-shaped shell having a first opening 3a through which a mating plug is inserted and removed so as to surround the header part 1a, and a second opening 3b in which a frame part 1b is installed facing the first opening 3a. 3 is provided.

  In FIG. 1, the housing 1 has an insulating property and is made of a non-conductive material. For example, it is possible to obtain an insulating housing 1 having a desired shape by molding engineering plastic and projecting a substantially rectangular parallelepiped header portion 1a into which a mating plug is fitted from the frame portion 1b. The contact 2 has conductivity in order to be electrically connected to a contact provided in the counterpart plug, and is preferably made of a metal having conductivity. For example, the contact 2 is formed of a metal plate having a low electric resistance value such as a copper alloy. The contact 2 is a plate contact made of a copper alloy plate.

  In FIG. 7, a plurality of vertically long grooves extending from the proximal end of the header portion 1a to the vicinity of the distal end portion are provided on the pair of side surfaces 11 and 12 formed in opposite directions in the header portion 1a (see FIG. 1). The plurality of vertically long grooves penetrate the frame portion 1b. The contact 2 is press-fitted into the groove from the frame portion 1b side and is locked to the header portion 1a. The plurality of contacts 2 are slightly depressed and locked in a groove formed in the header portion 1a, so that the contacts 2 are not short-circuited even when the shutter 4 made of a metal plate moves the header portion 1a. ing.

  In FIG. 7, the leads of the contacts 2a and 2b extending from the frame portion are bent at a right angle, and the leading ends of the leads are soldered to the printed circuit board 1p (see FIG. 2), so that the receptacle 10 is a side type. Connector. The receptacle 10 can be a top-type connector by soldering the tip ends of the leads of the contacts 2a and 2b extending from the frame portion 1b to the printed circuit board 1p.

  6 and 7, the pitch P of the lead tips of the plurality of contacts 2a locked to the side surface 11 of the header portion 1a and the lead tips of the plurality of contacts 2b locked to the side surface 12 of the header portion 1a. By shifting the pitch P by a half pitch (P / 2), the tip ends of the leads are arranged in a staggered shape. The mounting area of the receptacle 10 on the printed circuit board 1p (see FIG. 2) can be reduced.

  In FIG. 1, the shell 3 has conductivity and is preferably made of a metal having conductivity. The shell 3 is formed of a metal plate having a low electrical resistance value such as a copper alloy. The copper alloy plate has good workability, and the desired substantially rectangular tube-shaped shell 3 having the first opening 3a and the second opening 3b can be obtained by bending or punching the copper alloy plate.

  As shown in FIG. 2, the shell 3 constitutes the outer shell of the receptacle 10, so that the receptacle 10 is shielded. The receptacle 10 is a connector designed to prevent radiation of electromagnetic interference from the outside to the inner conductor (contact) and from the inner conductor (contact). By grounding a pair of locking pieces 3c and 3d (see FIG. 1) provided on both wings of the shell 3 to the ground pattern of the printed board 1p, the effect of preventing electromagnetic interference is further enhanced.

  In FIG. 1, a pair of locking holes 3 e and 3 f are provided in the first side surface 31 of the shell 3. On the other hand, a pair of locking projections 1e and 1f are provided on one surface of the frame portion 1b. By fitting the pair of locking holes 3e and 3f and the pair of locking protrusions 1e and 1f, the shell 3 and the housing 1 are securely held at positions determined from each other (see FIG. 2). In FIG. 1, a first side surface 31 of the shell 3 is provided with a pair of locking holes 3g and 3h in which a pair of lock arms (not shown) provided on the mating plug are fitted and locked. . A pair of bosses 3j and 3k are provided on the second side surface 32 opposite to the first side surface 31 of the shell 3 so that the shell 3 does not come into full contact with the mounting surface of the printed circuit board 1p (FIG. 9). reference). By providing the pair of bosses 3j and 3k, a pattern can be formed on the mounting surface of the printed board 1p facing the second side surface 32 of the shell 3 (see FIG. 2).

  In FIG. 2, in a state in which the shell 3 and the housing 1 are assembled, the front end surface of the header portion 1a is flush with the first opening surface 3a. On the other hand, as shown in FIG. 3, the rear surface of the frame portion 1b is flush with the second opening surface 3b except for a part of the frame portion 1b. Further, on the rear surface of the frame portion 1b and the second opening 3b side of the shell 3, a notch groove 13 is provided in which lead portions of the plurality of contacts 2 are extended and exposed (see FIG. 3).

  In FIG. 1, a receptacle 10 includes a shutter 4 that is movable in a shell 3 in a direction in which a mating plug (not shown) is inserted and removed. The receptacle 10 includes a pair of compression coil springs 5a and 5b that are disposed on both wings of the shutter 4 and bias the shutter 4 toward the first opening 3a. In addition, although the compression coil spring 5a and the compression coil spring 5b are the same, for convenience of explanation, a reference numeral is assigned for distinction.

  In FIG. 1, the shutter 4 has conductivity, and is preferably made of a metal having conductivity. For example, the shutter 4 is preferably formed of a metal plate having a low electrical resistance value, such as a copper alloy, like the shell 3, but is not limited to a copper alloy plate. The shell 3 is not limited to the copper alloy plate.

  As shown in FIG. 1, the shutter 4 is formed in a flat plate shape, and its outer shape forms a rectangular outline that is slightly smaller than the outline of the inner wall of the shell 3. The shutter 4 is urged by a pair of compression coil springs 5a and 5b arranged on both wings of the shutter 4 to close the first opening 3a from the inside of the shell 3 (see FIG. 2). And the electrostatic breakdown inside the electronic device by the contact of a human body is prevented. In addition, dust is prevented from entering the receptacle 10.

  In FIG. 2, the shutter 4 is prevented from jumping out from the first opening 3a by a pair of guide pieces 35, 36 extending to both wings of the first opening 3a or a pair of first bent pieces 37, 38. The shutter 4 is brought into contact with the guide pieces 35 and 36 or the first bent pieces 37 and 38, whereby the shutter 4 and the shell 3 are electrically connected to each other, and the shutter 4 is adjacent to the first opening 3a and the first opening 3a. By shielding the surface, the effect of preventing electromagnetic interference is further enhanced.

  In FIG. 5, the shell 3 has a pair of guide pieces 35 and 36 extending from both wings of the first opening 3a and bent at a substantially right angle and extending from the first opening 3a side to the second opening 3b side ( (See FIG. 4). The shutter 4 is provided with a pair of holes 4a and 4b slidable in a pair of guide pieces 35 and 36 (see FIG. 1). The pair of guide pieces 35 and 36 guide the inner diameters of the pair of holes 4a and 4b and the pair of compression coil springs 5a and 5b of the shutter 4 (see FIG. 4).

  In FIG. 3, one surface of the shell 3 is a first side surface 31 having a large area, and the other surface of the shell 3 facing the first side surface 31 is a second surface having substantially the same area as the first side surface 31. It is the side surface 32 (refer FIG. 6). The second side surface 32 is disposed to face the mounting surface of the printed circuit board 1p (see FIG. 2). Then, third and fourth side surfaces 33 and 34 having a small area are formed adjacent to the first side surface 31 and the second side surface 32 (see FIG. 5). For example, as shown in FIG. 5, the shell 3 has a shape surrounded by first to fourth side surfaces 31, 32, 33, and 34 by bending a metal plate developed into a predetermined shape. Yes. And the 1st opening 3a and the 2nd opening 3b are opened in a rectangle (refer FIG.2 and FIG.3).

  In FIG. 5, the pair of guide pieces 35 and 36 extends to both wings of the first opening 3a and is bent at a substantially right angle. For example, in the developed metal plate forming the shell 3, T-shaped bent pieces 35a and 36a are formed in advance on the third and fourth side surfaces 33 and 34, respectively, and this pair of T-shaped bent pieces 35a. 36a is bent at a right angle and faces each other in the first opening 3a. In FIG. 5, the pair of bent pieces 35a and 36a are flush with the first opening surface 3a.

  And as FIG. 4 shows, a pair of guide piece 35 * 36 has reached the 2nd opening 3b side from the 1st opening 3a side. In FIG. 5, the longer protruding pieces 35b and 36b of the T-shaped bent pieces 35a and 36a are bent at a right angle so that the inside of the shell 3 extends from the first opening 3a side to the second opening 3b side. ing. The pair of guide pieces 35 and 36 are arranged in parallel with each other in the shell 3.

  Next, the operation of the receptacle according to the present invention will be described with reference to the drawings.

  In FIG. 1 or FIG. 4, the pair of holes 4 a and 4 b slidable on the pair of guide pieces 35 and 36 are formed in a rectangular shape, for example. Further, for example, a rectangular hole 4c through which the header 1a can enter and exit is provided at the center of the shutter 4. The cross-sectional shape of the guide pieces 35 and 36 is a rectangle, and the outer shape of the guide pieces 35 and 36 is slightly smaller than the inner diameter of the pair of compression coil springs 5a and 5b. The pair of guide pieces 35 and 36 guide the inner diameters of the compression coil springs 5a and 5b by their outer shapes.

  When the mating plug is inserted into the receptacle 10 configured as described above, the shutter 4 is guided by the pair of guide pieces 35 and 36 and moves parallel to the second opening 3b side (see FIG. 8). On the other hand, although the pair of compression coil springs 5a and 5b are compressed, the outer shape guides the inner diameter of the compression coil springs 5a and 5b, so that the compression coil spring is prevented from being deformed and compressed as in the prior art. Is done. The present invention realizes a structure in which a compression coil spring correctly expands and contracts in a low-profile receptacle with a shutter.

  The pair of compression coil springs 5a and 5b is, of course, a metal body having conductivity, and is always in contact with the pair of guide pieces 35 and 36, that is, by being always conducted to the shell 3, as in the conventional case. In addition, the compression coil spring is insulated so that static electricity is not charged.

  The receptacle according to the present invention has a simplified structure as compared with the conventional one. For example, in the receptacle according to Patent Document 1, the shutter is constituted by a conductive shutter and an insulating shutter, whereas in the receptacle according to the present invention, the shutter is constituted only by a conductive shutter. Further, the receptacle according to the present invention eliminates the need for a pair of frame fittings used in the receptacle according to Patent Document 1. The receptacle according to the present invention has a simplified structure by integrally molding a pair of guide pieces and the like with a shell.

  As shown in FIG. 5, the shell 3 has a pair of first bent pieces 37 and 38 that are in contact with the shutter 4 on the first opening 3 a side. The pair of first bent pieces 37 and 38 is a key for identifying the mating plug.

  In the embodiment of FIG. 5, the pair of first bent pieces 37 and 38 as a key are arranged at the center, but for example, the number of the first bent pieces and the position where the first bent pieces are projected to the first opening 3a are changed. Thus, it is possible to prevent a mating plug other than the specific mating plug from being erroneously inserted. The first bent piece may be a polarity key that allows insertion of the mating plug in one fixed direction.

  In FIG. 3, the shell 3 has a pair of second bent pieces 3m and 3n facing the second opening 3b. The pair of second bent pieces 3m and 3n engages the tip portions of the pair of guide pieces 35 and 36 (see FIG. 4).

  For example, as shown in FIG. 1, the pair of second bent pieces 3m and 3n extends from the first side surface 31 in advance, and includes a shutter 4, a pair of compression coil springs 5a and 5b, and a housing with contacts 2. After 1 is assembled in the shell 3, the pair of second bent pieces 3m and 3n are bent and locked to the distal ends of the pair of guide pieces 35 and 36 (see FIG. 4). Locking holes are formed in the tip portions of the pair of second bent pieces 3m and 3n, and the tip portions of the guide pieces 35 and 36 are fitted and locked in the lock holes (see FIG. 3).

  In general, it is difficult to automate the assembly operation of the compression coil spring. As described above, the assembly operation is efficiently performed when the compression coil spring is assembled manually. The pair of second bent pieces 3m and 3n have a function of supporting the pair of guide pieces 35 and 36 at both ends. And a pair of guide pieces 35 and 36 are prevented from bending.

  Further, the receptacle 10 is provided with a pair of locking pieces 3c and 3d mounted on the printed board 1p on both wings of the shell 3 (see FIGS. 3 and 9). The pair of locking pieces 3c and 3d may be solder-bonded to the printed circuit board 1p, and is a solderless connection that is press-in connected to a plated through hole (not shown) formed in the printed circuit board 1p. Also good.

  The receptacle according to the present invention may be a horizontally mounted connector in which a mating plug is coupled in a direction parallel to the component mounting surface of the printed circuit board 1p (see FIG. 2), and sometimes the component mounting surface of the printed circuit board 1p. It may be a vertically mounted connector in which a mating plug is coupled from a direction perpendicular to the connector.

  The receptacle according to the present invention is composed of a housing, a plurality of contacts, a shell, a shutter, and a pair of compression coil springs. Has been simplified. In addition, since the shutter moves while being guided by the pair of guide pieces, a structure in which the compression coil spring expands and contracts correctly is realized.

1 is a perspective exploded view showing an embodiment of a receptacle according to the present invention. 2 is a perspective external view of a receptacle according to the embodiment. FIG. 2 is a perspective external view of a receptacle according to the embodiment. FIG. It is an internal block diagram of the receptacle by the said embodiment. It is a front view of the receptacle by the said embodiment. It is a bottom view of the receptacle by the said embodiment. FIG. 6 is a cross-sectional view taken along line YY in FIG. 5. It is ZZ arrow sectional drawing of FIG. 2 is a perspective external view of a receptacle according to the embodiment. FIG. 1 is a perspective exploded view of a connector with a shutter, illustrating a simplified housing according to the prior art.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 1a Header part 1b Frame part 2 * 2a * 2b Contact 3 Shell 3a 1st opening 3b 2nd opening 4 Shutter 4a * 4b A pair of hole 10 Receptacle 35 * 36 A pair of guide piece

Claims (5)

A substantially rectangular parallelepiped header portion to which the mating plug is fitted, and an insulating housing having a frame portion protruding from the header portion;
A plurality of contacts arranged in a pair in opposite directions locked to this header part,
The developed metal plate is bent, encloses the header portion, and has a substantially rectangular tube-shaped conductive shell that houses the frame portion;
A shutter having a plate-like conductivity that is arranged inside the shell and is movable in a direction in which the mating plug is inserted and removed;
A pair of electrically conductive compression coil springs disposed inside the shell and biasing the shutter; and
The shell is
A rectangular first opening through which the mating plug is inserted and removed;
A second opening opposite to the first opening, the second opening having a rectangular shape, the housing being inserted with the header portion at the top, and being substantially sealed off by the frame portion;
Part of the shell is bent from both short sides of the first opening toward each other toward the center of the first opening, and further bent to reach the second opening from the first opening. And a pair of guide pieces extending substantially parallel to the inside of the shell,
The shutter has a pair of holes in both wings through which the pair of guide pieces penetrates,
The shutter are both when moving conductively contact with while being guided by the pair of guide pieces,
The pair of compression coil springs is a receptacle in which the pair of guide pieces are housed, and are always in contact with the guide pieces so as to be electrically conductive and extend and contract to prevent deformation and compression. The shell has a pair of first bent pieces that are partly bent from both long sides of the first opening and in contact with the shutter.
The receptacle according to claim 1, wherein the first bent pieces serve as keys for identifying the mating plug. The shell has a pair of second bent pieces facing each other by bending a part of the shell from one long side of the second opening,
The receptacle according to claim 1 or 2, wherein the second bent pieces are engaged with the distal ends of the pair of guide pieces.   The receptacle according to any one of claims 1 to 3, wherein a pair of locking pieces mounted on the printed circuit board protrude from a bottom surface of the shell.   The receptacle according to claim 4, wherein the receptacle is a horizontally mounted connector to which the mating plug is coupled in a direction parallel to a component mounting surface of the printed circuit board.

Images