JP3134262U - Surface mount connector - Google Patents

Abstract

It is possible to reduce the size and mount each terminal piece on a circuit board while maintaining insulation from each other.
Each terminal piece is configured as a contact portion with a plug body facing one end of each terminal piece, and as a connection portion connected to a land formed on a circuit board at the other end side. The connecting portions 14 are formed so that the spaces between the connecting portions 14 are widened with respect to the spaces between the portions 13 and are connected to the opposing lands.
[Selection] Figure 5

Description

  The present invention relates to a small surface mount type connector that is mounted on a surface of a circuit board or the like and allows various signals and power to be exchanged by attaching and detaching plug terminals.

  For example, in a personal computer system, a personal computer and various peripheral devices or peripheral devices are interfaced by a small connector such as a USB (Universal Serial Bus) connector and a plug to exchange information signals and power. Yes. As shown in FIGS. 8 to 10, the small connector 100 generally supports a plurality of terminal pieces 101 arranged in parallel with each other on the insulating block body 102, and the terminal pieces 101 and the insulating block body 102 are supported. Covered with a shield case 103.

  In the small connector 100, each terminal piece 101 is formed in a strip shape as shown in FIGS. 9 and 11, and one end side is configured as a contact portion 101A with an opposite plug terminal (not shown) and the other end side is illustrated. As shown in FIG. 9, the connecting portion 101 </ b> B is connected to the opposite land 105 formed on the circuit board 104. The small connector 100 is supported by the insulating block body 102 with the terminal pieces 101 arranged in parallel with each other at a predetermined interval.

  In the small connector 100, the shield case 103 is generally formed in a substantially cylindrical shape, and one opening is configured as a plug insertion / removal opening 106 through which a plug terminal is inserted / removed as shown in FIGS. A space communicating with the opening 106 is configured as a plug fitting space 107 in which the contact portion 101A of each terminal piece 101 is extended. The shield case 103 accommodates each terminal piece 101 and the insulating block body 102 that supports them in the plug fitting space 107, and each terminal piece from the opening side facing the plug insertion / removal opening 106 as shown in FIG. The connecting portion 101B of 101 is exposed to the outside.

  The small connector 100 is bent in a substantially crank shape so that the connection portion 101B of each terminal piece 101 is located slightly below the bottom surface of the shield case 103. The small connector 100 protrudes from the bottom surface to the side of the shield case 103 and is integrally formed with a mounting portion 103A. For example, as shown in FIG. 9, the small connector 100 fixes the shield case 103 via the mounting portion 103 </ b> A with the plug fitting space 107 facing outward along the side edge portion of the circuit board 104. The small connector 100 is fixed by soldering onto the land 105 to which the connecting portion 101B of each terminal piece 101 is opposed.

  In the small connector 100, each terminal piece 101 needs to have a certain cross-sectional area in order to transmit a signal or the like in a good state, and in order to suppress the occurrence of crosstalk between the terminal pieces 101, a certain amount. It is necessary to arrange with spacing. In the small connector 100, the connection portion 101B of each terminal piece 101 is placed on the circuit board 104 in a state where the connection portion 101B is positioned on the opposing land 105, and mounted by performing a reflow soldering process or the like. In the small connector 100, it is necessary to maintain a pitch of about 0.4 mm at least in order to securely hold the mutual insulation and connect the terminal pieces 101.

  Therefore, in the small connector 100, the width dimension indicated by the dimension a in FIG. 10 is substantially defined by the shape dimension, the number of terminals used, and the mutual interval (pitch) indicated by the dimension b in FIG. In the small connector 100, there is a demand for reduction in size and thickness as well as cost, but it has been extremely difficult to realize it due to the structure described above.

  By the way, the small connector 100 is provided with an appropriate locking mechanism for holding the plug in a state where the plug is fitted in the plug fitting space portion 107 with a plug (not shown) inserted into and removed from the plug insertion / removal opening 106. . In the small connector 100, for example, a substantially U-shaped notch groove 108 is formed in the ceiling portion 103B of the shield case 103, and the tongue-like portion left by the notch groove 108 is formed in the plug fitting space 107. The lock piece 109 is formed by bending it into a generally heft shape so as to protrude.

  The small connector 100 is not shown, but when the plug in which a lock recess is formed in the housing corresponding to the lock piece 109 is fitted into the plug fitting space 107 through the plug insertion / removal opening 106, the lock piece 109 is The plug is held in a fitted state by being relatively engaged with the lock recess. In the small connector 100, such a locking mechanism prevents the plug from falling off from the plug fitting space 107, so that the connection between the devices is reliably maintained.

    The conventional small connector 110 shown in FIGS. 12 to 14 is an improvement of the locking mechanism of the small connector 100 described above. The small connector 110 includes a terminal piece 101 and an insulating block body 102 included in the small connector 100, but the shield case 111 is formed so that the width dimension w is larger than the width dimension a of the shield case 103 of the small connector 100.

  The shield case 111 houses a plurality of terminal pieces 101 supported by the insulating block body 102 in a plug fitting space 113 communicating with the plug insertion / removal opening 112. As shown in FIG. 13 and FIG. The lock lever fitting spaces 114A and 114B are formed by expanding both side portions of the arrangement region of the pieces 101. In the shield case 111, lock lever engagement holes 115A and 115B are formed in the ceiling 111A so as to face the lock lever fitting spaces 114A and 114B.

  As shown in FIG. 12, the plug body 116 is inserted into and removed from the plug insertion / removal opening 112 in the small connector 110. The plug body 116 is provided so as to protrude from the distal end surface of the plug body 117, and has a plurality of plug terminals 118 having a cross-sectional dimension substantially the same as the opening dimension of the plug fitting space 113 and facing each terminal piece 101. Provided. The plug body 116 is provided with lock levers 119A and 119B in the ceiling portion 116A corresponding to the lock lever engagement holes 115A and 115B on the small connector 110 side described above. Although not described in detail, the lock levers 119A and 119B are each formed by bending an elastic plate into a substantially square shape so that the apex portion protrudes from the ceiling portion 116A of the plug body 116.

  When the plug body 116 is pushed into the plug fitting space portion 113 from the plug insertion / removal opening 112, the lock levers 119A and 119B are pressed by the inner surface of the ceiling portion 111A and move in a state where the apex portion is elastically deformed. . When the plug body 116 is pushed into a predetermined position, the apex portions of the lock levers 119A and 119B are engaged with the lock lever engagement holes 115A and 115B so as to be engaged in the plug engagement space 113. Is retained. Thus, the small connector 110 and the plug body 116 are in a state in which the terminal piece 101 and the plug terminal 118 which are opposed to each other are in contact with each other, so that signals and the like are exchanged.

In the small connector 110, when each terminal piece 101 and the insulating block body 102 equivalent to the small connector 100 described above are used, as described above, depending on the shape and number of the terminal pieces 101, the number of used pieces, and the mutual interval (pitch). Since the outer dimensions are defined, as shown in FIG. 13 and FIG. 14, the width dimension provided at both side portions of the arrangement region of the terminal pieces 101 is the amount corresponding to the lock lever fitting spaces 114A and 114B of c1 and c2. The horizontal width dimension of the shield case 111, that is, the entire horizontal width dimension w is larger than the horizontal width dimension a of the small connector 100.

  In the small connector 110, for example, by narrowing the pitch of the terminal pieces 101, the space for the lock lever fitting space portions 114A and 114B can be reduced and the size can be reduced. However, in the small connector 110, when the terminal pieces 101 and the lands 105 facing each other are connected and mounted on the surface of the circuit board 104, the insulation between the terminal pieces 101 or between the lands 105 is reliably maintained. Therefore, there is a limit to downsizing by requiring 0.4 mm at the minimum.

  Patent Document 1 discloses a connector that can directly connect a memory card having terminals with different pitches and a flexible printed circuit board. The connector is provided with a connection terminal in which a conductor portion for a memory card having a wide pitch and a conductor portion for a flexible printed board having a narrow pitch are integrally formed.

  In Patent Document 2, a plurality of contacts arranged in an insulating housing are arranged at a narrow pitch in order to connect one end side to a connector on the other side, and wide to connect to a solder tab connecting an electric wire to the other end side. An electrical connector arranged in a pitch is disclosed.

Patent Document 3 discloses a multipolar connector in which a plurality of terminal members are combined with a body and a cover which are divided by narrowing the connecting portion side with the modular plug and widening the connecting portion side with the device internal side. Is disclosed.
JP 2002-117945 A JP 2002-203648 A JP 2002-216913 A

  Each of the connectors disclosed in the above-mentioned patent documents is a slightly large connector, and is not a small surface-mount connector that is surface-mounted on a circuit board by positioning and soldering the connecting portion on the land. . Therefore, each connector does not have a condition of maintaining a distance of at least 0.4 mm necessary for reliably holding the insulation between the terminal pieces or between the lands. Furthermore, the patent document does not provide a countermeasure for maintaining the distance between the terminal pieces described above and reducing the size while providing a lock mechanism for maintaining the connection state with the plug.

  Accordingly, the present invention has been proposed for the purpose of providing a surface-mount connector that can be miniaturized and that can be mounted on a circuit board while the terminal pieces are insulated from each other.

A surface-mounting connector according to the present invention that achieves the above-described object includes a plurality of strip-shaped terminal pieces, an insulating block body, and a shield case. The surface mount type connector is configured such that each strip-shaped terminal piece is configured as a contact portion with a plug terminal facing each other, and connected to a land formed on the circuit board at the other end side, The contact portions are formed so as to be spaced apart from each other, and are connected to opposing lands on the circuit board. In the surface mount connector, an insulating block body formed of a synthetic resin material supports the terminal pieces arranged in parallel with each other at a predetermined interval. The surface mount type connector is a plug fitting space in which a shield case, which is formed in a generally cylindrical shape by a thin metal plate, communicates with a plug insertion / removal opening through which a plug terminal is inserted / removed to extend the contact portion of each terminal piece The terminal portion is configured to cover each terminal piece and the insulating block body, and the connecting portion of each terminal piece protrudes from the opening opposite to the plug insertion / removal opening.

  In the surface mount type connector according to the present invention configured as described above, the connecting portion and the land of the opposing terminal pieces are positioned and placed on the circuit board, and the connecting portion is subjected to, for example, a reflow soldering process. The lands are mounted on the circuit board by soldering. In the surface mount type connector, each terminal piece is formed with a space between each connection portion widened, so that insulation is maintained on the circuit board and soldering is performed. In the surface mount type connector, the overall size can be reduced by narrowing the pitch of the contact portions of each terminal piece. Also, in the surface mount type connector, the space efficiency in the plug fitting space is improved by narrowing the pitch of each contact portion, and the plug is inserted into and removed from the plug insertion / removal opening, for example, in an efficient space while maintaining the external dimensions. It is possible to provide a locking mechanism with the plug, and the like, so that multiple functions and high functions can be achieved.

  In the surface mount connector, the connection parts of the terminal pieces arranged next to each other are formed by shifting their positions alternately in the length direction, and connected to the pads formed by arranging them in a staggered pattern on the circuit board. Is done. In the surface mount type connector, each connection portion can secure a sufficient pitch in the front, rear, left, and right directions and connect to the opposing pads.

  The surface mount type connector is a terminal piece comprising a horizontal wall on the insulating block body, extending toward the plug insertion / removal opening in the plug fitting space of the shield case and supporting the contact portion of each terminal piece on the main surface. The support part is formed integrally. In the surface mount type connector, the terminal pieces arranged adjacent to each other are alternately supported by the upper and lower main surfaces of the terminal piece support portion at the respective contact portions. In the surface mount connector, the space efficiency of each contact portion in the plug fitting space portion is further improved by such a configuration, and miniaturization, multiple functions, and high functionality are achieved.

  In the surface mount type connector, the shield case is configured as a fitting area of a lock lever provided on the plug terminal on both sides of the arrangement area of the terminal pieces of the plug fitting space portion by improving the space efficiency. The surface mount connector has a locking mechanism that securely holds the plug terminal from both sides in the plug fitting space without forming a large opening that impairs the shielding characteristics of the shield case while reducing the overall size. By providing the plugs, it is possible to prevent the plugs from falling off and to securely connect the devices, and to suppress the occurrence of solder peeling between the connecting portion and the land due to grazing or the like during the plug insertion / removal operation.

  According to the surface mount connector according to the present invention configured as described above, each one end side is configured as a contact portion with the opposite plug terminal, and the other end side is connected to a land formed on the circuit board. Each terminal piece configured as a part is formed with the mutual interval of each connection part being expanded with respect to the mutual interval of each contact part, and is connected to the opposite land of the circuit board. On the other hand, the circuit board is connected with insulation from each other to improve the reliability. Further, according to the surface mount connector, the overall size can be reduced by narrowing the pitch of each contact portion.

Hereinafter, a small surface-mounted connector (hereinafter simply referred to as a connector) 1 shown as an embodiment of the present invention will be described in detail with reference to the drawings. The connector 1 has the same basic configuration and usage as the small connector 110 with a lock mechanism described above, and is used in a personal computer and various peripheral devices. As shown in FIGS. 1 and 2, the circuit board 2 of the main device is used. On the other hand, mounting is performed by a surface mounting method in which each terminal piece 10, which will be described later in detail, is soldered to each land 3.

  The circuit board 2 is formed with predetermined wiring patterns on the front and back main surfaces and mounted with various electronic components, circuit elements, etc., and solder balls are provided on the lands 3 to position and place the connectors 1 for reflowing. The connector 1 is surface-mounted by performing soldering or the like. Although details are omitted, the circuit board 2 has a minimum interval of 0.4 mm necessary for each land 3 to securely solder each terminal piece 10 of the connector 1 while maintaining mutual insulation. A pattern is formed. The circuit board 2 is also patterned with dummy lands and the like that are mechanically fixed by soldering a shield case 12 (to be described later) together with the lands 3 and grounded.

  The connector 1 is also connected to a personal computer and various peripheral devices or peripheral devices by attaching and detaching the plug body 4 having a lock mechanism, and exchanges information signals and power supplies. Since the plug body 4 is configured in the same manner as the plug body 116 described above, the details thereof will be omitted. However, the plug body 4 is provided so as to protrude from the distal end surface of the plug body, and a plurality of plug terminals opposed to the terminal pieces 10 are provided. And a locking mechanism that holds the fitted state. The plug body 4 is composed of parallel patterns in which plug terminals are formed on the main surface of the terminal substrate 5 at a predetermined interval.

  The plug body 4 is provided with lock levers 6A and 6B that omit the details of holding the fitting state with the connector 1 on both sides of the plug terminal. Each of the lock levers 6A and 6B is formed by bending an elastic plate into a substantially heft shape so that the apex portion protrudes from the ceiling portion, and the plug body 4 is pushed into the connector 1 to a predetermined amount to be described later. The plug body 4 is engaged with the lock hole on the connector 1 side to be engaged, that is, the connection state between the opposite plug terminal and the terminal piece 10 is maintained.

  Since the plug body 4 has the above-described lock levers 6A and 6B disposed on both sides of the plug terminal (terminal board 5), the plug body is formed on the terminal board 5 at a fine pitch by a miniaturization forming technique and thus the whole is small. Configured to be held in In the plug body 4, the plug terminals are smaller than the interval of 0.4 mm which is the minimum required for soldering the terminal pieces 10 while maintaining insulation from each other when the connector 1 is mounted on the circuit board 2. It forms in the terminal board | substrate 5 with a pitch.

  As shown in FIGS. 1 and 2, the connector 1 also places and positions each terminal piece 10, which will be described in detail later, on each land 3 with respect to the circuit board 2 of the main device, and performs reflow soldering processing. It is mounted by the surface mounting method to connect. As described above, the connector 1 also has a plug body 4 provided with the lock levers 6 </ b> A and 6 </ b> B on the ceiling part, and a lock part to be described later that holds the plug body 4 in a fitted state. Due to the characteristic configuration of each terminal piece 10, the connector 1 is formed in the same size as the small connector 100 even when the plug body 4 including the lock levers 6 </ b> A and 6 </ b> B described above is attached and detached.

  As shown in FIGS. 1 to 4, the connector 1 also includes a plurality of strip-shaped terminal pieces 10 </ b> A to 10 </ b> N (hereinafter collectively referred to as terminal pieces 10), an insulating block body 11, and a shield case 12. Composed. The connector 1 is also configured such that each terminal piece 10 is arranged and supported in parallel with the insulating block body 11 and the terminal piece 10 and the insulating block body 11 are covered with a shield case 12. As shown in FIGS. 1 and 4, the connector 1 is also soldered on each land 3 in which each terminal piece 10 is formed along the side edge of the circuit board 2.

As shown in FIGS. 2 and 5, the connector 1 is configured as a contact portion 13 in which each terminal piece 10 is formed in a narrow strip shape as shown in FIGS. 2 and 5, and one end side is connected to each opposing plug terminal of the plug body 4. The other end side is configured as a connection portion 14 that is electrically and mechanically fixed to each opposing land 3 of the circuit board 2. Each terminal piece 10 is arranged in parallel with each other and is provided integrally with the insulating block body 11 by an insert molding method.

  Although not described in detail, each terminal piece 10 is a comb-like intermediate body in which, for example, a metal thin plate material having elasticity is used as a raw material, and the tip side of each connection portion 14 is connected and integrated by a carrier portion (not shown). The intermediate body is set in a molding die of the insulating block body 11. When the insulating block body 11 is formed, the terminal pieces 10 are separated from each other in a state where the carrier portion is cut and integrated with the insulating block body 6. Of course, each terminal piece 10 is not limited to such a forming method.

  In order to mount each terminal piece 10 on the circuit board 2 corresponding to each plug terminal of the plug body 4 in which each contact portion 13 is formed as a plate-like portion having a predetermined length and the pitch is reduced. It is supported by the insulating block body 6 in a state parallel to each other with a pitch p1 smaller than the minimum required interval of 0.4 mm. As shown in FIGS. 2 and 4, each terminal piece 10 has an integrated connection portion 14 via a bent portion 15 in which each contact portion 13 is bent in a substantially heft shape in the height direction at the base end portion. To be connected to Each terminal piece 10 is insert-molded into the insulating block body 11 at each bent portion 15.

  Each terminal piece 10 is formed such that each bent portion 15 is bent substantially in the shape of a letter in the height direction as described above and is also bent sideways. Each terminal piece 10 is formed by changing the amount of bending to the side of each bent portion 15 in accordance with the position where it is arranged as shown in FIG. In other words, each terminal piece 10 is configured such that the amount of bending to the side at each bent portion 15 gradually increases toward the one arranged on both sides of the one arranged on the central portion. It is formed.

  In each terminal piece 10, the connection portions 14 constitute the same surface, and the distance (pitch p <b> 2) between the contact portions 13 is larger than the pitch p <b> 1 of the contact portions 13 due to the configuration of the bent portions 15 described above. Formed. That is, each terminal piece 10 is an insulating block in a state parallel to each other with a pitch p2 substantially equal to or larger than the interval of 0.4 mm required for each connecting portion 14 to be mounted on the circuit board 2. Supported by the body 6.

  The connector 1 is formed by integrally forming a base portion 16 and a terminal piece support portion 17 of an insulating block body 6 of an insulating synthetic resin material. The insulating block 6 has a rectangular block shape with a base portion 16 having a predetermined thickness, and a shield case 12 is combined with the outer peripheral portion as will be described later. As shown in FIGS. 2 and 4, the insulating block body 6 supports each terminal piece 10 in the base portion 16, and the respective bent portions 15 pass through in the thickness direction so that they are parallel to each other and hold mutual insulation. To do. The insulating block body 6 is formed with a lateral width sufficient for the base portion 16 to support the terminal pieces 10 in which the connection portions 14 are expanded in the lateral direction as described above.

  The insulating block body 6 integrally forms a terminal piece support portion 17 made of a horizontal wall on the side surface of the base portion 16 from which the contact portion 13 side of each terminal piece 10 protrudes. The insulating block body 6 is composed of a horizontal wall portion that faces the terminal board 5 of the plug body 4 in which the terminal piece support portion 17 is fitted to the connector 1 in parallel with a predetermined distance, and protrudes from the base portion 16. The contact portion 13 of each terminal piece 10 is supported so that a part in the thickness direction is embedded in the main surface facing the terminal substrate 5. The insulating block body 6 is configured such that the contact portions 13 of the terminal pieces 10 are arranged on the terminal piece support portion 17 with the narrow pits p1 described above. In the insulating block body 6, the terminal piece support portion 17 is formed smaller than the lateral width of the base portion 16.

In the connector 1, the shield case 12 is formed of a thin metal plate material in a substantially rectangular tube shape as shown in FIGS. 1 and 4. The shield case 12 has a base portion 16 of the insulating block body 6 described above.
A plug fitting that has an inner space substantially equal to the outer shape of the plug body 4, that is, the terminal piece support portion 17 of the insulating block body 6, that is, the contact portion 13 of each terminal piece 10 extends through this inner space. The joint space portion 18 is configured. The shield case 12 is combined with the insulating block body 6 in the plug fitting space 18 via an appropriate caulking portion formed facing the base portion 16 of the insulating block body 6.

  As shown in FIG. 4, the shield case 12 stores the insulating block body 6 in the plug fitting space 18 in a state where the insulating block body 6 is moved to one side, and the plug body 4 is inserted into and removed from one opening facing the insulating block body 6. The plug insertion / removal opening 19 is configured. The shield case 12 is integrally formed with a plurality of tongue-like plug fitting guide pieces 20 having distal end portions slightly extended outwards at appropriate portions of the opening edge constituting the plug insertion / removal opening 19. In the shield case 12, these plug fitting guide pieces 20 can be easily fitted into the plug fitting space 18 through the plug insertion / removal opening 19 during the fitting operation of the plug body 4. To.

  The shield case 12 extends toward the plug insertion / removal opening 19 so that the terminal piece support portion 17 divides the plug fitting space portion 18 into upper and lower space portions in a state where the insulating block body 6 is accommodated. . The shield case 12 is arranged such that the contact portions 13 of the terminal pieces 10 supported by the terminal piece support portions 17 are arranged in the horizontal direction in the plug fitting space portion 18 with the tip portions facing the plug insertion / removal openings 19. So that

  As shown in FIG. 4, in the shield case 12, the other opening facing the plug insertion / removal opening 19 of the plug fitting space 18 forms a terminal piece extraction opening 21. In the shield case 12, the connection portions 14 of the terminal pieces 10 having the bent portions 15 penetrating the base portion 16 of the insulating block body 6 from the terminal piece lead-out openings 21 are arranged in parallel with each other in the lateral direction and outward. Pull out. The shield case 12 is formed integrally with a ridge-shaped convex portion from the opening edge constituting the terminal piece extraction opening 21, and this convex portion is used as a shield piece 22 as shown in FIG. 4 and pulled out from the terminal piece extraction opening 21. It is bent so as to be close to the upper part of the connecting part 14 so as to cover the connecting part of each connecting part 14 and the land 3 facing each other.

  The shield case 12 is integrally formed with attachment pieces 23A and 23B that project laterally from the bottom surface. As described above, the shield case 12 has the mounting pieces 23A and 23B soldered to the dummy lands formed on the circuit board 2 when the terminal pieces 10 are soldered to the opposing lands 3, thereby connecting the connector 1 to the shield case 12. The circuit board 2 is fixed and the ground connection is performed.

  As described above, the shield case 12 is formed as a space portion in which the plug fitting space portion 18 is slightly larger than the lateral width of the terminal piece support portion 17 of the insulating block body 11 and substantially equal to the outer shape of the base portion 16. Therefore, the shield case 12 has left and right gaps communicating with the plug insertion / removal openings 19 between the terminal piece support portions 17 in a state in which the insulating block body 11 is housed in the plug fitting space portion 18, and these gaps are formed. Are configured as lock lever fitting spaces 24A, 24B.

  As shown in FIG. 1 and FIG. 2, the shield case 12 has a pair of lock lever engagement holes 26 </ b> A spaced apart from each other in the width direction in the ceiling portion 25 facing the lock lever fitting space portions 24 </ b> A and 24 </ b> B. 26B is formed. The lock lever engagement holes 26A, 26B are each formed by a rectangular opening, and the lock levers 6A, 6B provided in the plug body 4 are opposed to each other when the plug body 4 is fitted in the plug fitting space 18. Engage each other. In this case, in the shield case 12, the lock levers 6 </ b> A and 6 </ b> B engage the respective apexes from the inside of the plug fitting space 18 with the lock lever engagement holes 26 </ b> A and 26 </ b> B. Therefore, even if the shield case 12 is formed with the lock lever engagement holes 26A and 26B in the ceiling portion 25, the shield characteristics are not greatly impaired.

  In the shield case 12, the lock lever fitting space portions 24A and 24B are formed in the plug fitting space portion 18 on both sides of the terminal pieces 10 supported by the terminal piece support portion 17 as described above. . In the shield case 12, as described above, each terminal piece 10 forms each contact portion 13 at a narrow pitch p1, and each connection portion 14 is formed at a pitch p2 equivalent to the conventional connectors 100 and 110. Thus, the lock lever fitting spaces 24A and 24B are formed using the pitch difference. Therefore, the shield case 12 is formed in the same size as the conventional connector 100 that does not have a lock mechanism.

  The connector 1 is formed by combining a shield case 12 with an insulating block body 11 in which a plurality of terminal pieces 10 are integrated as described above. In the connector 1, the connection portions 14 of the terminal pieces 10 are drawn out from the terminal lead-out openings 21 of the shield case 12. In the connector 1, with respect to the circuit board 2, the connection portions 14 of the terminal pieces 10 are positioned on the opposing lands 3 to which solder balls or the like are joined, and the mounting pieces 23 of the shield case 12 are positioned on the opposing dummy lands. Mounted. The connector 1 is mounted on the circuit board 2 by reflow soldering so that the plug insertion / removal opening 19 faces outward as shown in FIG.

  In the connector 1, since the connection portions 14 of the terminal pieces 10 are drawn out from the terminal lead opening 21 in a state of being arranged with a sufficient pitch, the opposing connection portions 14 and the lands 3 are kept insulated from each other. And it is firmly fixed in a stable state. In the connector 1, this improves the reliability of the soldered portion.

  In the connector 1, the plug body 4 is fitted into the plug fitting space 18 through the plug insertion / removal opening 19. In the connector 1, the plug body 4 is smoothly fitted into the plug fitting space 18 by each plug fitting guide piece 20 formed at the opening edge of the plug insertion / removal opening 19. In the connector 1, the fitted plug body 4 enters the inside of the plug fitting space 18 while elastically deforming the lock levers 6 </ b> A and 6 </ b> B, and these lock levers 6 </ b> A and 6 </ b> B are formed in the ceiling portion 25. By engaging the apex portion relative to the lock lever engagement holes 26 </ b> A and 26 </ b> B, the fitting state of the plug body 4 is maintained.

  In the connector 1, the plug body 4 is pressed onto the terminal piece support portion 17 of the insulating block body 11 in which the terminal substrate 5 is extended into the plug fitting space portion 18 by the elastic force of the lock levers 6A and 6B. To fit. In the connector 1, the contact portion 13 of each terminal piece 10 supported on the terminal piece support portion 17 is kept in contact with the plug terminals facing each other, and information signals, power supplies, etc. are exchanged.

  In the connector 1, the lock lever fitting space portions 24 </ b> A and 24 </ b> B are located on both sides of each terminal piece 10 supported by the terminal piece support portion 17 in the plug fitting space portion 18 of the shield case 12 as described above. The plug body 4 fitted into the plug fitting space 18 in the lock lever fitting spaces 24A and 24B engages the lock levers 6A and 6B in the lock lever engaging holes 26A and 26B and is locked. Retained. In the connector 1, the contact state between the contact portions 13 of the respective terminal pieces 10 and the plug terminals is applied with the elastic force of the lock levers 6 </ b> A and 6 </ b> B from both sides, whereby a more stable connection is performed.

In the connector 1, the lock lever fitting space portions 24A and 24B are formed in the plug fitting space portion 18 on both sides of the terminal pieces 10 to which the lock levers 6A and 6B are fitted. As in the small connector 100 described above, the engagement hole of the lock lever 6 may be formed above the plug fitting space 18. In the connector 1, the lock lever fitting space portions 24 </ b> A and 24 </ b> B are not necessary in the case of such a configuration, and the size can be reduced by narrowing the pitch of the contact portions 13 of each terminal piece 10. In the connector 1, the space secured in the plug fitting space 18 can be used to maintain the same shape and mount an appropriate additional function to achieve multiple functions and high functionality. Become.

  The connector 30 shown as the second embodiment in FIGS. 6 and 7 is characterized by a structure that is further miniaturized by skillfully combining a plurality of terminal pieces 31 with the insulating block body 32. Yes. Since the basic configuration of the connector 30 is the same as that of the connector 1 described above, description thereof is omitted by attaching the same reference numerals to the corresponding portions.

  In the connector 30, each terminal piece 31 has the one end side as a contact portion 33 with the plug body 4 and the other end side via a bent portion 35 as in the case of each terminal piece 10 of the connector 1 described above. It is configured as a connection portion 34 with the land 3 facing the substrate 2. In addition, the connector 30 has a terminal insertion in which each terminal piece 31 is soldered on the bottom surface side of the circuit board 2 through the terminal hole formed in the opposing land 3 by bending the connection portion 34 in the height direction. Although shown as a surface mount connector of a type, a surface dip type similar to the connector 1 described above may be used.

  Also in the connector 30, as shown in FIG. 7, each terminal piece 31 is formed in a bent portion 35 so as to be bent in a substantially square shape in the height direction and also bent in the lateral direction. As shown in the figure, each terminal piece 31 also gradually increases in the amount of lateral bending at each bent portion 35 as it goes toward what is arranged on both sides of what is arranged in the central portion. It is formed as follows. In each terminal piece 31, the bending position of the connection part 34 is formed so that every other piece may be moved back and forth in the length direction.

  In the connector 30, each terminal piece 31 has the connection portion 34 formed in the above-described structure, so that every other land 3 of the circuit board 2 through which the connection portion 34 passes is shifted back and forth in a staggered manner. Formed in an array. In the connector 30, as shown in FIG. 6, the terminal pieces 31 </ b> A and 31 </ b> B that are directly adjacent to each other are connected to the opposite lands 3 of the circuit board 2 with the connection portions 34 </ b> A and 34 </ b> B displaced forward and backward, Even if the pitch is narrowed, it is possible to maintain a sufficient distance in the front, rear, left and right. In the connector 30, it is possible to enlarge the terminal hole formed in the land 3, so that the circuit board 2 does not require precise processing accuracy and the mechanical strength can be measured.

  In the connector 30, as described above, each terminal piece 31 is bent in the side surface direction and the height direction at the bent portion 35, but is formed with different bending angles in the height direction as well as the side surface direction. . That is, in each terminal piece 31, as shown in FIG. 6, every other bending portion 35 is alternately bent so as to have a large bending angle and a small bending angle, thereby forming the contact portion. 33 has a structure arranged in a zigzag manner in the vertical direction.

  In the connector 30, as shown in FIG. 6, the terminal piece 31 </ b> A increases the bending angle in the height direction of the bent portion 35 </ b> A, thereby bringing the contact portion 33 </ b> A into the terminal support portion 36 with respect to the insulating block body 32. Are integrated so as to be guided to the upper surface 36A side. In the connector 30, the terminal piece 31 </ b> B directly adjacent to the terminal piece 31 </ b> A reduces the bending angle in the height direction of the bent part 35 </ b> B, thereby making the contact part 33 </ b> B a terminal support part thereof with respect to the insulating block body 32. It integrates so that it may guide to the bottom face 36B side of 36.

In the connector 30, the contact structure 33 is supported by the top surface 36 </ b> A and the bottom surface 36 </ b> B every other one in the terminal support portion 36 of the insulating block body 32 by adopting the arrangement structure of the terminal pieces 31 described above. become. Therefore, in the connector 30, the pitch of each contact portion 33 can be set large, and connection with the plug terminal of the plug body 4 that is fitted in the plug fitting space portion 18 while maintaining mutual insulation. Will be done. Of course,
In the connector 30, the plug body 4 in which adjacent plug terminals are formed on the front and back main surfaces of the terminal substrate 5 is connected corresponding to the arrangement structure of the terminal pieces 31.

  In the connector 30, the pitch of the terminal pieces 31 supported by the terminal support portion 36 of the insulating block body 32 can be reduced by adopting the arrangement structure of the terminal pieces 31 described above. Thus, the connector 30 can be reduced in size as a whole by reducing the size of the shield case 12, and can be added to additional functions with the same shape to achieve multiple functions and high functions.

It is a figure explaining the usage pattern of the surface mount type connector shown as embodiment of this invention. It is an internal perspective view of a surface mount type connector. It is a front view of a surface mount type connector. It is sectional drawing of a surface mount type connector. It is a block diagram of the terminal piece with which a surface mount type connector is equipped. It is sectional drawing of the surface mount type connector shown as other embodiment. It is a block diagram of the terminal piece with which a surface mount type connector is equipped. It is a perspective view of the conventional surface mount type connector. It is an internal perspective view of the conventional surface mount connector. It is a front view of the conventional surface mount type connector. It is a block diagram of the connection terminal with which the conventional surface mount type connector is equipped. It is a figure explaining the usage pattern of the conventional surface mount type connector. It is a perspective view of the conventional surface mount type connector provided with the lock structure. It is a front view of the conventional surface mount connector provided with the lock structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector 2 Circuit board 3 Land 4 Plug body 5 Terminal board 6 Lock lever 10 Terminal piece 11 Insulation block body 12 Shield case 13 Contact part 14 Connection part 15 Bending part 16 Base part 17 Terminal piece support part 18 Plug fitting space part 19 Plug insertion / removal opening 20 Plug fitting guide piece 21 Terminal piece extraction opening 22 Shield piece 23 Mounting piece 24 Lock lever fitting space 25 Ceiling 26 Lock lever engagement hole 30 Connector 31 Terminal piece 32 Insulating block 33 Contact portion 34 Connection part 35 Bending part 36 Terminal support part

Claims (4)

A plurality of strip-shaped terminal pieces, each of which is configured as a contact portion with a plug terminal facing one end side, and which is connected to a land formed on the circuit board at the other end side,
An insulating block that supports the terminal pieces arranged in parallel with each other at a predetermined interval; and
A plug fitting space for extending the contact portion of each terminal piece in communication with a plug insertion / removal opening through which the plug terminal is inserted / removed is formed to cover each terminal piece and the insulating block body, and A shield case for projecting the connecting portion of each terminal piece from the side facing the insertion / removal opening;
The surface-mounting type wherein the terminal pieces are formed with the mutual intervals of the connection portions expanded with respect to the mutual intervals of the contact portions, and are connected to opposing lands of the circuit board. connector.   The connection portions of the terminal pieces arranged adjacent to each other are formed by shifting their positions alternately with respect to the length direction and connected to pads formed in a staggered arrangement on the circuit board. The surface-mount connector according to claim 1. A terminal piece support comprising a horizontal wall that extends toward the plug insertion / removal opening in the plug fitting space of the shield case and supports a contact portion of each terminal piece on a main surface of the insulating block body. The part is formed integrally,
The terminal pieces arranged adjacent to each other have their respective contact portions supported alternately on the upper and lower main surfaces of the terminal piece support portion, according to any one of claims 1 and 2. The surface mount connector described.   The said shield case was comprised as the fitting area | region of the lock lever which provided the both sides part of the arrangement | sequence area | region of each said terminal piece of the said plug fitting space part in the plug terminal. The surface mount connector according to any one of the preceding claims.

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