JP6724674B2 - Surface mount connector - Google Patents

Description

The technology disclosed in the present specification relates to a surface mount connector mounted on a surface of a substrate.

Surface mount connectors that are mounted on the surface of a board are known. The surface mount connector includes a housing fixed to the surface of the board and a plurality of terminals supported by the housing. Each terminal has a contact portion that comes into contact with the mating terminal and a lead portion that is soldered to the substrate. The contact portion is located inside the housing, and the lead portion projects from the housing. The plurality of terminals are arranged along the longitudinal direction of the housing, and the lead portions protruding from the housing are also arranged along the longitudinal direction of the housing. For example, Patent Document 1 describes an example of a surface mount connector.

JP, 2005-16571, A

By providing the connector with a plurality of terminals, the longitudinal dimension of the housing is increased. When the dimension in the longitudinal direction becomes large, it becomes easy to be influenced by the deformation of the substrate (for example, warpage of the substrate). For example, when the substrate warps, the distance between the housing and the substrate changes along the length of the housing. At this time, as the dimension of the connector in the longitudinal direction increases, the amount of change in the distance in the longitudinal direction of the connector increases. When the distance between the housing and the board changes, the distance between the leads projecting from the housing and the board also becomes non-uniform, so that a connection failure occurs between some of the leads and the board. There is a risk. The present specification discloses a technique for suppressing a connection failure between a lead portion and a substrate in a surface mount connector having a plurality of terminals.

The surface mount connector disclosed in the present specification is mounted on the surface of a board, and a mating terminal is connected thereto. The surface mount connector includes a fixed housing fixed to the surface of the substrate, a movable housing swingably supported by the fixed housing, and a plurality of terminals supported by the fixed housing and the movable housing. Each of the plurality of terminals is held by a fixed housing and soldered to the board, a lead portion is held by the movable housing, and a contact portion is in contact with the mating terminal and a lead portion and a contact portion. And an elastic portion that is located between the elastic portions and is elastically deformable according to an external force. The fixed housing is divided into a plurality of pieces in the direction in which the plurality of terminals are arranged. The movable housing is arranged over a plurality of divided fixed housings.

In the above surface mount connector, the fixed housing fixed to the surface of the substrate is divided into a plurality in the direction in which the plurality of terminals are arranged. Therefore, the size of each of the divided fixed housings can be reduced in the direction in which the plurality of terminals are arranged. Therefore, even if the substrate is deformed, the change in the distance between the fixed housing and the substrate is suppressed in each of the divided fixed housings. That is, the change in the distance between the lead portion held by the fixed housing and the substrate is also suppressed. As a result, even if the surface mount connector has a large number of terminals, it is possible to suppress a defective connection between the lead portion and the substrate.

On the other hand, the contact parts of the plurality of terminals are held by the movable housing. The movable housing is arranged over a plurality of divided fixed housings. That is, the lead portions of the plurality of terminals are held by the plurality of divided fixed housings, while the contact portions of the plurality of terminals are held by the common movable housing. Therefore, even if the plurality of divided fixed housings are fixed along the deformed substrate surface, the contact portions of the plurality of terminals are correctly arranged by the movable housing without being affected by the influence. Therefore, even if the substrate is deformed, for example, the connection between the mating terminal and the contact portion can be easily performed.

The perspective view showing the schematic structure of the surface mount connector concerning an example. FIG. 3 is an exploded perspective view showing a schematic configuration of a surface mount connector according to an example. Sectional drawing (yz cross section) of the position shown in the III-III line of FIG. It is a figure which shows the state which the board deform|transformed, when the surface mount connector is mounted on the board surface, (a) shows the state which the surface mount connector which concerns on an Example is mounted on the board surface. , (B) show a state where the surface mount connector in which the fixed housing is not divided is mounted on the surface of the substrate. It is a figure showing the state where the surface mount connector of an example is mounted on the substrate surface, and shows the state where each of the fixed housings which were divided was fixed to the substrate surface at different angles.

The surface mount connector 10 according to this embodiment will be described. As shown in FIG. 1, the surface mount connector 10 includes fixed housings 20 a and 20 b, a movable housing 30, and a plurality of terminals 40. As an example, ten terminals 40 are provided in this embodiment. The fixed housings 20a and 20b are divided along the arrangement direction of the plurality of terminals 40, and have a first fixed housing 20a and a second fixed housing 20b. The first fixed housing 20a and the second fixed housing 20b are fixed to the surface of the substrate 2. The movable housing 30 is swingably supported by the first fixed housing 20a and the second fixed housing 20b. The terminal 40 is supported by both the first fixed housing 20a or the second fixed housing 20b and the movable housing 30. In the present embodiment, the surface of the substrate 2 on which the surface-mounted connector 10 is fixed is called the front surface, and the opposite surface is called the back surface.

As shown in FIG. 2, the first fixed housing 20a includes side surfaces 22a and 24a and a support portion 26a. In addition, in FIG. 2, the illustration of a recess 23 described later is omitted.

The side surfaces 22a, 24a are substantially rectangular plate shapes, and are fixed perpendicularly to the surface of the substrate 2 (that is, in the z direction in FIG. 1). The side surfaces 22a and 24a are arranged at regular intervals in the y direction. That is, the side surfaces 22a and 24a are arranged parallel to the x direction. The sides of the side surfaces 22a and 24a parallel to the substrate 2 (sides in the x direction) have dimensions larger than those of the sides perpendicular to the substrate 2 (sides in the z direction). The side surface 22a and the side surface 24a have substantially the same dimension in the x direction. The side surface 22a and the side surface 24a have different sizes in the z direction, and the side surface 22a is smaller than the side surface 24a. The side surface 22a and the side surface 24a are arranged so that the sides in the x direction match when viewed in the y direction.

The support portion 26a has a substantially rectangular parallelepiped shape, and is arranged between the side surface 22a and the side surface 24a. The support portion 26a is arranged near the ends of the side surfaces 22a and 24a (in the x direction (−) in FIG. 1) and is connected to the side surfaces 22a and 24a. That is, the side surface 22a and the side surface 24a are separated from each other by substantially the same distance as the dimension of the support portion 26a in the y direction.

The second fixed housing 20b has a symmetrical shape with the first fixed housing 20a. That is, the side surfaces 22b and 24b of the second fixed housing 20b and the support portion 26b have substantially the same shape as the side surfaces 22a and 24a and the support portion 26a of the first fixed housing 20a, respectively. The first fixed housing 20a differs from the first fixed housing 20a only in the configuration arranged near the end portion on the x direction (+) side. The side surface 22a and the side surface 22b are arranged on the same straight line parallel to the x direction, and the side surface 24a and the side surface 24b are arranged on the same straight line parallel to the x direction. That is, the first fixed housing 20a and the second fixed housing 20b are arranged on the same straight line parallel to the x direction. The first fixed housing 20a and the second fixed housing 20b are separated from each other. In the following specification, when it is not necessary to distinguish between the first fixed housing 20a and the second fixed housing 20b, they may be simply referred to as the fixed housing 20.

The movable housing 30 includes a first columnar section 32, a terminal accommodating section 34, a second columnar section 36, and a convex section 38. The first columnar portion 32 has a substantially rectangular parallelepiped shape and extends in the x direction. The dimension of the first columnar portion 32 in the x direction is smaller than the distance between the support portion 26a of the first fixed housing 20a and the support portion 26b of the second fixed housing 20b.

In the terminal accommodating portion 34, a plurality of plate-shaped members 35 are arranged in parallel at intervals in the x direction. The dimension of the member 35 in the z direction is larger than the dimension of the first columnar portion 32 in the z direction. The terminal accommodating portion 34 includes 12 members 35. Six of the members 35 are arranged at equal intervals with a distance smaller than the distance from the inside of the support portion 26a of the first fixed housing 20a to the end of the first fixed housing 20a on the x direction (+) side. A space 37 is provided between the adjacent members 35. The remaining six members 35 are arranged at equal intervals smaller than the distance from the end of the second fixed housing 20b on the (x) side in the x direction to the inside of the support portion 26b of the second fixed housing 20b. A space 37 is provided between the adjacent members 35. The outer surfaces of the members 35 arranged at both ends of the terminal accommodating portion 34 are arranged on the same plane (yz plane) as the end surface of the first columnar portion 32.

The second columnar portion 36 has a substantially rectangular parallelepiped shape and extends in the x direction. The dimension of the second columnar section 36 in the x direction is substantially the same as the dimension of the first columnar section 32 in the x direction. The dimension of the second columnar section 36 in the z direction is smaller than the dimension of the first columnar section 32 in the z direction. The second columnar portion 36 is embedded on the y direction (−) side of the terminal accommodating portion 34 (see FIG. 3 ). That is, the terminal accommodating portion 34 is arranged between the first columnar portion 32 and the second columnar portion 36.

The convex portions 38 are arranged at both ends of the first columnar portion 32 and the terminal accommodating portion 34 in the x direction. The convex portion 38 is arranged above the support portion 26a of the first fixed housing 20a and the support portion 26b of the second fixed housing 20b.

The movable housing 30 is housed in the first fixed housing 20a and the second fixed housing 20b. That is, it is arranged between the side surface 22a and the side surface 24a of the first fixed housing 20a and between the side surface 22b and the side surface 24b of the second fixed housing 20b. The dimension of the movable housing 30 in the y direction is smaller than the distance between the side surface 22a and the side surface 24a of the first fixed housing 20a and smaller than the distance between the side surface 22b and the side surface 24b of the second fixed housing 20b. Has been done. The dimension of the movable housing 30 in the x direction excluding the convex portion 38 is smaller than the distance between the support portion 26a of the first fixed housing 20a and the support portion 26b of the second fixed housing 20b. The convex portion 38 is supported by the support portion 26a of the first fixed housing 20a and the support portion 26b of the second fixed housing 20b. Accordingly, the movable housing 30 is swingably supported by the first fixed housing 20a and the second fixed housing 20b.

The terminal 40 will be described with reference to FIG. As shown in FIG. 3, the terminal 40 includes a lead portion 42 that is solder-bonded to the substrate 2, a contact portion 45 that is in contact with a mating terminal, and an elastic portion 44 that is located between the lead portion 42 and the contact portion 45. Equipped with. The lead portion 42 is located on one end side of the terminal 40, and the contact portion 45 is located on the other end side of the terminal 40. Note that FIG. 3 illustrates only one of the ten terminals included in the surface mount connector 10, but the other nine terminals have the same configuration. Further, in FIG. 3, the two fixed housings 20 a and 20 b are not distinguished and are described as the fixed housing 20.

The lead portion 42 extends outward from the side surface 22 of the fixed housing 20 substantially in parallel to the substrate 2. The lead portion 42 is soldered to the substrate 2. A fitting portion 43 is provided between the lead portion 42 and the elastic portion 44. The width dimension (dimension in the x direction) of the fitting portion 43 is made larger than the width dimension of the other portion of the lead portion 42 (see FIG. 2 ). On the outer surface of the side surface 22 of the fixed housing 20, a recess 23 having a shape corresponding to the fitting portion 43 is provided at a position corresponding to the fitting portion 43. The lead portion 42 is held by the fixed housing 20 by fitting the fitting portion 43 located at the base end of the lead portion 42 into the recess 23 of the fixed housing 20.

The contact portion 45 is arranged in the space 37 of the movable housing 30. The contact portion 45 is continuous with the engaging portion 49 located at the tip, the first portion 48 extending upward in the space 37 from the engaging portion 49, and the second portion extending downward in the space 37. And a portion 47. The locking portion 49 and the first portion 48 face the second portion 47. The holes 3 are provided in the substrate 2 below the first portion 48 and the second portion 47. The pin-shaped mating terminal (not shown) is inserted into the hole 3 from the back surface of the substrate 2 and contacts the contact portion 45 of the terminal 40. The mating terminal is arranged between the first portion 48 and the second portion 47 of the contact portion 45 and is sandwiched between the locking portion 49 and the second portion 47. That is, the terminals 40 are female terminals and the mating terminals are male terminals.

A fitting portion 50 is provided between the contact portion 45 and the elastic portion 44. The width dimension (dimension in the x direction) of the fitting portion 50 is made larger than the width dimensions of the other portions of the contact portion 45 (see FIG. 2 ). On the inner surface of the first columnar section 32 of the movable housing 30, a recess 33 having a shape corresponding to the fitting section 50 is provided at a position corresponding to the fitting section 50. The contact portion 45 is held by the movable housing 30 by fitting the fitting portion 50 located at the base end of the contact portion 45 into the recess 33 of the movable housing 30.

The elastic portion 44 is located between the lead portion 42 and the contact portion 45, and extends from the fitting portion 43 fixed to the fixed housing 20 to the fitting portion 50 fixed to the movable housing 30. The elastic portion 44 is elastically deformable and is not held by the fixed housing 20 and the movable housing 30. Therefore, the elastic portion 44 can be freely deformed, and allows the movable housing 30 to swing with respect to the fixed housing 20. Accordingly, even if vibration or the like is applied to the surface mount connector 10, the vibration or the like can be absorbed.

The relationship between the surface mount connector 10 and the board 2 when the board 2 is deformed will be described with reference to FIG. FIG. 4 shows a state in which the substrate 2 is deformed so that the surface of the substrate 2 is convex, and FIG. 4A shows the relationship between the surface mount connector 10 and the substrate 2 of this embodiment. There is. As a comparative example, FIG. 4B shows the relationship between the surface mount connector 100 in which the fixed housing is not divided and the substrate 2. The surface mount connector 100 includes a fixed housing 120 and a movable housing 130. Further, in FIG. 4, the shapes of the fixed housing 20 and the movable housing 30 are illustrated in a simplified manner, and the terminals 40 are omitted.

As shown in FIG. 4A, the surface mount connector 10 has a plurality of terminals 40, and thus has a large dimension in the x direction. Therefore, when the board 2 is deformed so that the surface of the board 2 becomes convex when viewed from the y direction, both ends of the surface mount connector 10 in the x direction are easily separated from the board. As shown in FIG. 4B, when the fixed housing 120 is not divided and only one fixed housing 120 is provided for the surface mount connector 100, the end portion of the fixed housing 120 (that is, the surface mount connector 100 is The distance L2 between the edge portion) and the substrate 2 becomes large. On the other hand, as shown in FIG. 4A, when the fixed housing 20 is divided (that is, when the first fixed housing 20a and the second fixed housing 20b are provided), it is adjacent to the first fixed housing 20a. The distance L1 between the end of the second fixed housing 20b on the opposite side (that is, the end on the right side in FIG. 4A) and the substrate 2 is smaller than the distance L2. In this way, when the fixed housing 20 is divided into the two fixed housings 20a and 20b, when the substrate 2 is deformed, the change in the distance between the two fixed housings 20a and 20b and the substrate 2 is reduced. You can Therefore, it is possible to suppress the connection failure between the lead portion 42 and the substrate 2.

Further, in the surface mount connector 10 of this embodiment, the fixed housing 20 is divided, and one movable housing 30 is supported by the two divided fixed housings 20a and 20b. Even if the fixed housing is divided and the movable housing is divided according to the fixed housing, the distance between the end of the surface mount connector and the substrate (for example, L1 and L2 in FIG. 4) can be reduced. However, when the fixed housings are divided, the plurality of fixed housings may be fixed to the substrate at different angles due to the tolerance that occurs when fixing the plurality of fixed housings to the substrate 2. When the plurality of fixed housings are fixed at different angles and the movable housing is divided in accordance with the fixed housing, the plurality of movable housings are also arranged at different angles together with the fixed housing. If the movable housings are arranged at different angles in one surface mount connector, the contact portions of the plurality of terminals supported by the movable connector are not arranged in a straight line. Then, it becomes difficult to insert the counterpart terminal into the terminal of the surface mount connector. As shown in FIG. 5, in the surface mount connector 10 of this embodiment, the fixed housing 20 is divided into two fixed housings 20a and 20b, while the movable housing 30 is not divided. Therefore, even if the two fixed housings 20a and 20b are arranged at different angles due to the tolerances that occur when they are fixed, the movable housing 30 is arranged linearly within the two fixed housings 20a and 20b, and the contact portions of the plurality of terminals 40 are arranged. 45 is also arranged on the same straight line. Therefore, the counterpart terminal can be easily inserted.

Although the fixed housing 20 is divided into two in the present embodiment, the present invention is not limited to such a configuration. It suffices that two or more fixed housings that are divided support a common movable housing. For example, the fixed housing may be divided into three or more. Further, although the ten terminals 40 are provided in the present embodiment, the present invention is not limited to such a configuration. The surface mount connector can be configured to include a desired number of terminals 40, and may include more than 10 terminals 40 or less than 10.

The technical elements described in the present specification or the drawings exert technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technique illustrated in the present specification or the drawings achieves a plurality of purposes at the same time, and achieving the one purpose among them has technical utility.

2: substrate 10: surface mount connector 20: fixed housing 22, 24: side surface 26: support portion 30: movable housing 32: first columnar portion 34: terminal accommodating portion 36: second columnar portion 38: convex portion 40: terminal 42 : Lead parts 43, 50: Fitting part 44: Elastic part 45: Contact part 49: Locking part

Claims (1)

A surface-mount connector that is mounted on the surface of a board and is connected with a mating terminal
A fixed housing fixed to the substrate surface,
A movable housing swingably supported by the fixed housing,
A plurality of terminals supported by the fixed housing and the movable housing,
Each of the plurality of terminals is
A lead portion held by the fixed housing and solder-bonded to the substrate,
A contact portion that is held by the movable housing and is in contact with the mating terminal;
An elastic portion that is located between the lead portion and the contact portion and is elastically deformable in response to an external force,
The fixed housing is divided into a plurality in the direction in which the plurality of terminals are arranged,
The surface mount connector, wherein the movable housing is arranged over a plurality of divided fixed housings.

Images