JP2015204165A - Surface mounting connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a surface mounting connector in which positional deviation of contacts can be regulated by an alignment plate thermal influence of which is limited.SOLUTION: In a surface mounting connector 1 in which the bottom surface 2e of a housing 2 is in contact with a circuit board PB, and contacts 3 extend from the rear surface 2a toward the circuit board PB, an alignment plate 20 for holding all or a part of a portion extending downward of the contacts 3 is provided on the rear surface 2a of the housing 2. The alignment plate 20 includes a coupling portion 250b extending in the width direction in parallel with the rear surface 2a of the housing 2, and continuous to the rear surface 2a of the housing 2 at the opposite ends in the width direction. When the contact 3 is in the regular forming posture, the alignment plate 20 holds the corresponding contacts 3 entirely or partially.

Description

  The present invention relates to a surface mount connector that supports a contact fixed to a circuit board by soldering on a rear surface of a housing.

  As a technique for correcting the positional deviation of the contact of the surface mount connector, a technique described in Patent Document 1 is known. In the technique disclosed herein, the contact is accommodated in a positioning groove formed on the rear surface of the connector body, and the contact is held from the width direction by press-fitting protrusions provided on the left and right partition walls of the positioning course.

  In fact, according to this technique, since the tip portion of the contact is held by the positioning groove, the positional deviation of the contact is restricted, and as a result, the contacts are arranged in a line. However, since the positioning groove constitutes a part of the housing and is integrally formed on the rear surface of the housing, the influence of the thermal deformation of the housing directly reaches the positioning groove. As a result, deformations such as warping and twisting of the housing caused by heat in a high-temperature environment during solder mounting are directly transmitted to the positioning groove, thereby disturbing contact alignment.

Japanese Patent Laid-Open No. 7-201424

  The present invention has been made in view of such circumstances, and is a surface mount that can regulate the positional deviation of the contact by an alignment plate (including the positioning groove referred to above) with limited thermal influence. To provide a connector.

  In order to solve the above problems, a surface mount connector according to the present invention includes: (1) a box-shaped housing whose bottom surface is in contact with a circuit board, and a connecting portion that is held by the rear surface of the housing and that is connected to a solder mounting portion at the tip. A surface mount connector comprising a contact extending toward the circuit board while changing an angle in the middle of extension, and an alignment plate for accommodating a part of the connecting portion and aligning the contact on the rear surface of the housing, There is a state in which the alignment plate is slidable in the vertical direction along the rear surface, and a normal press-fitting position for holding the connection part in the sliding process, and a state in which the contact is bent in a normal forming posture. A standby position allowing acceptance, and the contact is aligned by sliding the alignment plate from the standby position to the normal press-fitting position. And it has a.

  According to this invention, the alignment plate is slidable along the rear surface of the housing. As a result, at least a gap that allows sliding is secured between the rear surface of the housing and the surface corresponding to the rear surface of the alignment plate. As a result, for example, even if the thermal influence received during solder mounting causes the housing to be warped and twisted, the deformation of the housing does not directly affect the alignment plate. Thereby, the surface mount connector which can control the positional deviation of a contact is obtained.

More preferably, in the surface mount connector according to the present invention, (2) the connecting portion includes a press-fit portion having a projecting portion in the width direction, and the alignment plate includes a pre-accommodating chamber that allows the press-fit portion to be received; A storage chamber having a post-accommodation chamber into which the press-fitting portion is press-fitted and connected to the pre-accommodation chamber; the press-fitting portion is in the pre-accommodation chamber at the standby position; It is a thing of (1) description which has the characteristic in the place in a backroom.

  According to the present invention, the alignment plate includes the accommodation chamber, accommodates the connecting portion of the contact bent in the normal forming posture, and slides from the pre-accommodation chamber to the rear accommodation chamber in this accommodated state. As a result, the contacts move in the state that the contacts are guided in the storage chambers, so that the positional movement of the contacts is regulated by the sliding movement of the alignment plates. Is suppressed.

  More preferably, the surface mount connector according to the present invention is (3) described in (2) characterized in that the post-accommodating chamber is provided with a groove into which the press-fitting portion is press-fitted.

  According to the present invention, the post-accommodation chamber is provided with a press-fitting groove. Thus, the alignment plate that has been slid from the standby position to the normal press-fitting position can receive the press-fitting portion of the connecting portion in the groove at the normal press-fitting position. As a result, a surface mount connector that can regulate the positional deviation of the contact is obtained.

  More preferably, the surface mount connector according to the present invention is characterized in that (4) the alignment plate is integrally provided in the housing, and is slidable along the rear surface of the housing by a release operation. To (3).

  According to the present invention, the alignment plate is provided integrally with the housing, and can be slid through the release operation. The term “integral” includes the case where the alignment plate is molded separately from the housing and then assembled to the housing to be integrated, and also includes the case where the alignment plate is already integrally formed at the time of molding.

  More preferably, in the surface mount connector according to the present invention, (5) the alignment plate is integrally formed through a connecting portion connected to the housing, and is slid along the rear surface of the housing by an operation of separating the connecting portion. One of the items (1) to (3), which is characterized by being free.

  According to the present invention, the alignment plate is formed integrally with the housing, so that a surface mount connector with better workability and ease of assembly can be obtained as compared with the case where it is formed separately and assembled later.

  More preferably, in the surface mount connector according to the present invention, (6) the connecting portion is provided at an end portion in the width direction of the alignment plate, and a fixing portion appears at an end portion of the connecting portion after separation. The housing is characterized in that the housing is provided with a support portion having a groove for slidably guiding the fixing portion in the vertical direction along the rear surface of the housing.

  According to the present invention, the connecting portion engages with the support portion of the housing at the end portion in the width direction, and ensures vertical sliding freedom along the side surface of the housing. Thereby, the slide operation of the alignment plate can be stably performed in a state where the parallel posture with respect to the housing is maintained, and a surface mount connector provided with the alignment plate which is not easily affected by the thermal effect of the housing is obtained.

FIG. 1 is an external perspective view of a surface mount connector according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the surface mount connector. FIG. 3 is an external perspective view showing a normal forming state of the contact of the surface mount connector, where (A) is an upper contact and (B) is a lower contact. FIG. 4 is an external perspective view of the housing of the surface mount connector. FIG. 5 is an external perspective view of the housing with the alignment plate of the surface mount connector removed. FIG. 6 is an external perspective view of the alignment plate of the surface mount connector, where (A) is the front side and (B) is the back side. FIG. 7 is a six-side view of the alignment plate of the surface mount connector, where (A) is a top view, (B) is a front view, (C) is a bottom view, (D) is a back view, E) is a side view, and (F) is a side view. FIG. 8 is an enlarged view of a main part of the alignment plate of the surface mount connector. 9 is a cross-sectional view taken along the line IX-IX in FIG. 10A and 10B are process diagrams showing the operation of the alignment plate of the surface mount connector, in which FIG. 10A shows a state in which the contacts are bent to a normal forming position and the alignment plate is in a standby position, and FIG. A state where the connecting portion is disconnected, (C) is a state where the alignment plate is lowered to the normal press-fitting position and the terminals are press-fitted. FIG. 11 is an external perspective view showing a state where the surface mount connector is mounted on a circuit board.

<Surface Mount Connector> The surface mount connector 1 will be described with reference to the drawings. FIG. 1 is an external perspective view of a surface mount connector according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the surface mount connector. In addition, the direction shown in the description follows the direction instruction defined in the drawings.

  As shown in FIGS. 1 and 2, the surface mount connector 1 includes a non-conductive housing 2 and a conductive contact 3. The housing 2 has a box shape in which the bottom surface 2c is in contact with the circuit board PB. The front surface 2b has a plurality of rows of contact holes 23 for holding the contacts 3 on the rear surface 2a. Is formed. The contact 3 is provided with a contact portion 33 for contacting a contact of a corresponding connector (not shown) at one end, and a connection portion 32 for connecting to a terminal of the circuit board PB at the other end. The connecting portion 32 is bent 90 degrees outward at the tip and extends parallel to the circuit board PB, and is fixed to a corresponding terminal (not shown) with solder therebetween.

  As shown in FIGS. 1 and 2, the surface mount connector 1 includes reinforcing metal fittings 4 on the left and right side surfaces 2 e and 2 f of the housing 2 in order to reinforce the solder connection strength with the circuit board PB. The surface mount connector 1 includes an alignment plate 20 that can be slid in the vertical direction at a position separated from the rear surface 2 a of the housing 2 in order to suppress the positional fluctuation of the connection portion 32 of the contact 3.

<Contact> The contact 3 will be described with reference to the drawings. FIG. 3 is an external perspective view showing a normal forming state of the contact of the surface mount connector according to the embodiment of the present invention, in which (A) is an upper contact and (B) is a lower contact.
The contact 3 is stamped from a rolled metal material by press molding, and a predetermined bending posture is obtained by repeating a predetermined bending process. In the case of the present embodiment, the contact 3 is pressed into the housing 2 and then bent into a predetermined shape.

As shown in FIG. 3A, the upper contact 3 is formed with an end portion of a contact portion 33 for making electrical and mechanical contact with a corresponding connector (not shown). 31, the connecting portion 34, and the connecting portion 32. The fixed portion 31 is formed with an overhang portion in the width direction, and is press-fitted into the press-fit portion 25 opened in a slit shape of the housing 2 here. The connecting portion 34 is bent downward by 90 degrees and extends linearly downward. The connecting portion 34 is continuous with the connecting portion 32 at the tip. The connecting portion 34 includes a press-fit portion 35 in which a protruding portion 350 is formed in the width direction near the lower end. The press-fit portion 35 includes an overhang portion 350 having the same thickness as the other portions of the contact. The connecting portion 34 is bent 90 degrees outward at the lower end and connected to the connecting portion 32. The connection part 32 is a part that is soldered to the terminal of the circuit board PB and extends in parallel to the circuit board PB.

  As shown in FIG. 3B, the lower contact 3 has the same configuration as the upper contact 3. The connecting portion 34 has a shorter extension than the connecting portion 34 of the upper contact 3, and is connected to the connecting portion 32 at the tip. The connecting portion 34 includes a press-fit portion 35 near the lower end.

  <Housing> The housing 2 will be described with reference to the drawings. FIG. 4 is an external perspective view of the housing of the surface mount connector according to the present embodiment. FIG. 5 is an external perspective view of the housing with the alignment plate of the surface mount connector removed. FIG. 6 is an external perspective view of the alignment plate of the surface mount connector, where (A) is the front side and (B) is the back side. FIG. 7 is a six-side view of the alignment plate of the surface mount connector, where (A) is a top view, (B) is a front view, (C) is a bottom view, (D) is a rear view, and (E). Is a side view, and (F) is a side view. FIG. 8 is an enlarged view of a main part of the alignment plate of the surface mount connector. 9 is a cross-sectional view taken along the line IX-IX in FIG.

  As shown in FIGS. 4 and 5, the housing 2 is an injection-molded product made of non-conductive synthetic resin, and includes an upper surface 2d, a bottom surface 2c, left and right side surfaces 2e and 2f, and front and rear surfaces 2b and 2a. It is a box body in which a hollow housing portion 27 is formed, and an opening 28 is formed on the front surface 2b so as to continue to the housing portion 27 inside. A corresponding connector (not shown) is fitted into the housing portion 27 through the opening 28 and is electrically and mechanically connected to a mating contact (not shown).

  The bottom surface 2c of the housing 2 is flat on the surface in contact with the circuit board PB, and the inside forms the bottom wall of the internal accommodating portion 27. As shown in FIGS. 4 and 5, the left and right side surfaces 2 e and 2 f of the housing 2 are provided with reinforcing bracket fixing portions 26 for holding the reinforcing bracket 4. A pair of reinforcing bracket fixing portions 26 are provided at opposing positions, and a groove 26a into which a press-fit portion 4a projecting in the width direction of the reinforcing bracket 4 is press-fitted is formed inside.

  As shown in FIG. 2, the front surface 2 b of the housing 2 is provided with an opening 28 connected to an internal accommodating portion 27 in which a corresponding connector (not shown) is accommodated. The opening 28 extends to fill the frame of the front surface 2b and continues to the inside accommodating portion 27 with its size. The accommodating portion 27 is a box-shaped space and is defined by upper and lower surfaces 2d and 2c, left and right surfaces 2e and 2f, and a rear surface 2a of the housing 2.

  In the housing 2, as shown in FIGS. 4 and 5, contact holes 23 for holding the fixing portions 31 of the contacts 3 are arranged in two rows and four rows on the rear surface 2 a. The upper and lower contact holes 23 are arranged with a gap in the left-right direction, and the connection portions 32 at the tips of the contacts 3 are arranged in a horizontal row. The present invention is not limited to this embodiment, and various arrangements of contact holes 23 are allowed.

  The surrounding wall in which the contact hole 23 of the rear surface 2a of the housing 2 is formed has an uneven structure in the front-rear direction, while ensuring the wall thickness around the contact hole 234, the sink of the housing 2 at the time of injection molding, This is to suppress deformation. Of course, the present invention does not limit the wall surface structure of the housing to the structure of this embodiment.

As shown in FIGS. 4 and 5, the housing 2 has a base 22, 260 for supporting the bending position when the contact 3 is formed on the rear surface 2 a. Provided. As shown in FIGS. 4 and 5, the base 22 of the upper contact 3 is directly provided on the rear surface 2 a of the housing 2, and the base 260 of the lower contact 3 is positioned below the rear surface 2 a of the housing 2. Provided on the upper surface of the alignment plate 20.

  As shown in FIGS. 4 and 5, the housing 2 includes a support portion 21 that bulges outward in a substantially lower half of the side edge of the rear surface 2 a. The support part 21 is a polygon in a side view and is provided with a pair of left and right so as to extend in parallel to each other. As shown in FIGS. 4 and 5, the support portion 21 includes an overhanging portion 29 whose inner surfaces that face each other are substantially flat and project inward at the lower end. The overhang portion 29 includes a groove 21a penetrating in the vertical direction at the center in the front-rear direction.

  As shown in FIG. 4, the support portion 21 holds the alignment plate 20 while facing each other. As shown in FIG. 4, the alignment plate 20 is connected to the support portion 21 by connecting portions 250 b provided at both ends of the alignment plate 20. The alignment plate 20 is integrally formed as a part of the housing 2 through the connecting portion 250b.

  <Alignment Plate> As shown in FIG. 4, the alignment plate 20 aligns the tips of the contacts 3 in which the accommodation chamber 220 having a concavo-convex structure in the front-rear direction continues in the width direction. The alignment is adjusted simultaneously in the left-right direction, the up-down direction, and the front-rear direction. In the case of this embodiment, the alignment plate 20 is obtained by integral injection molding as a part of the housing 2. At the time of molding, the injected resin is cast into the alignment plate 20 main body through connecting portions 250b located at both ends of the alignment plate 20 and continuing to the support portion 21 of the housing 2.

  As shown in FIG. 4, the alignment plate 20 is in a standby position when the contact 3 is bent in the normal forming posture, and the entire thickness direction of the contact 3 is accommodated in the accommodation chamber 220. The alignment plate 20 is slidably supported by the support portions 21 provided at both end edges of the rear surface 2a of the housing 2 and separated from the housing 2 when the contacts 3 are bent in the normal forming posture. . The alignment plate 20 is slid downward in a state in which the contacts 3 are accommodated, and press-fits the contacts 3 at a normal press-fitting position.

  Since the alignment plate 20 is separated from the housing 2, it is difficult to be directly affected by the thermal deformation of the housing 2, and the deformation of the housing 2 is suppressed even in a high temperature environment exposed during solder mounting. In this state, the vicinity of the tip of the contact 3 can be aligned at a correct position.

  <Details of Alignment Plate> As shown in FIG. 6 and FIG. 7, the alignment plate 20 includes a main body 210 in which concave storage chambers 220 are continuous in the left-right direction, and supports formed at both ends in the left-right direction of the main body 210. Part 250. The concave storage chamber 220 is provided not only on the front surface but also on the back surface in substantially the same state. Thereby, since a thermal balance is adjusted, the warping and deformation of the alignment plate 20 itself are suppressed.

  As shown in FIGS. 6 and 7, the main body 210 includes a storage chamber 220 for storing the contacts 3 in a line in the left-right direction. The storage chamber 220 has a concave shape formed in the main body 210 and has a depth corresponding to the thickness of the contact 3. The accommodation chamber 220 includes a front accommodation chamber 220a having a home base shape when viewed from the front and a rear accommodation chamber 220b having a rectangular shape when viewed from the front, and both spaces are connected to each other. In both the pre-accommodation chamber 220a and the post-accommodation chamber 220b, as shown in FIG. 9, a taper for facilitating reception of the contact 3 and the press-fit portion 35 of the contact 3 is formed on the longitudinal wall in the front-rear direction.

As shown in FIG. 9, the rear chamber 220b is formed with grooves 230 extending in the vertical direction on opposing wall surfaces. The groove 230 starts from the lower side and continues to the middle of the rear chamber 220b. The press-fit portion 35 of the contact 3 accommodated in the pre-accommodation chamber 220a of the alignment plate 20 at the standby position.
In the process in which the alignment plate 20 is slid to the normal press-fitting position, the entire overhang 350 is fitted into the groove 230. As the alignment plate 20 slides from the standby position to the normal press-fitting position, the press-fitting portion 35 of the contact 3 moves from the pre-accommodation chamber 220a to the rear-accommodation chamber 220b, and the press-fitting portion 35 is press-fitted into the groove 230 in the rear accommodation chamber 220b. The

  As shown in FIG. 6, the alignment plate 20 is connected to a separation portion 21 b of the support portion 21 provided on the rear surface 2 a of the housing 2 with a support portion 250 provided on the left and right ends of the main body 210. The support portion 250 of the alignment plate 20 includes a connecting portion 250b whose tip is connected to the support portion 21 of the housing 2, and a fixing portion 250a on which the base end of the connecting portion 250b is set. The fixing portion 250 a is provided on the side surface of the main body 210 of the alignment plate 20 and functions as a guide post along the groove 21 a of the support portion 21 of the housing 2 after the connection portion 250 b is cut off.

As shown in FIG. 6, the connecting portion 20 is a convex piece having a rectangular cross section, and can be easily separated from the support portion 21 of the housing 2. Separation may be performed by a cut-off method using a blade, or may be performed by a fusing method using heat such as laser.
As shown in FIG. 6, the fixing portion 250 a is a convex piece having a rectangular cross section, which is larger than the connecting portion 250 b and has a smaller projected area than the side surface of the main body 210 of the alignment plate 20. After the connecting portion 250b is separated from the support portion 21 of the housing 2, the fixing portion 250a constitutes the left and right end portions of the alignment plate 20 and is slidably fitted into the groove 21a of the support portion 21 of the housing 2. Function as.

  On the upper surface of the main body 210 of the alignment plate 20, as shown in FIGS. 6 and 7, when the lower contact 3 is formed, four bases 260 are provided apart from each other in the left-right direction to support the bending position. . The base 260 is formed of a curved surface that follows the forming curve of the contact 3.

  As shown in FIG. 9, the groove 230 of the rear chamber 220b is concave and includes a bottom wall and side walls. The bottom wall is formed so as to be smoothly connected to the vertical wall of the pre-accommodation chamber 220a. The side wall constituting the groove 230 is formed with a taper for guiding the press-fit portion 35 of the contact 3 into the opening of the pre-accommodating chamber 220a. The press-fitting may be performed by a method of adjusting the clearance between the bottom wall of the groove 230 provided in the opposing vertical wall of the rear chamber 220b and the maximum width of the press-fitting portion 35 of the contact 3, and at this time, the opposite The bottom wall may be inclined so that the dimension between the bottom walls of the two grooves 230 decreases along the press-fitting direction. Further, the thickness of the groove 230 sandwiching the press-fitting portion 35 and the thickness of the press-fitting portion 35 of the contact 3 may be adjusted, or both of these adjustments may be made together.

  <Assembly> Assembly of the surface mount connector 1 will be described with reference to the drawings. FIG. 10 is a process diagram showing the operation of the alignment plate of the surface mount connector according to the embodiment of the present invention, in which (A) is a state in which the contacts are bent to a normal forming posture and the alignment plate is in the standby position; B) is a state where the connecting portion of the alignment plate is disconnected, and (C) is a state where the alignment plate is lowered to the normal press-fitting position to press-fit the contacts.

  The assembly of the surface mount connector 1 will be described in three steps as shown in FIG. As shown in FIG. 10A, the contact 3 is inserted into the contact hole 23 from the front surface 2b of the housing 2, and a fixed portion 31 of the contact 3 is formed in a slit shape provided at the back of the contact hole 23 on the rear surface 2a of the housing 2. Is press-fitted into the press-fitting portion 25 opened at the same time.

As shown in FIG. 10B, the contact 3 is bent at the distal end side of the connecting portion 34 connected to the connecting portion 32 upward by approximately 90 degrees, and then the proximal end side of the connecting portion 34 is bent downward by approximately 90 degrees. It is done. Thereby, a regular forming posture is obtained. At this time, the base 22 provided in the housing 2 supports the bending position of the upper contact 3, and the base 260 provided in the alignment plate 20 supports the bending position of the lower contact 3. The connecting portion 34 of the contact 3 is bent at an angle larger than 90 degrees along the inclined portion 260a, and is returned to a position where the bending angle is approximately 90 degrees by the action of the spring back. The connecting portion 34 of the contact 3 is accommodated in the accommodating chamber 220 of the alignment plate 20, and the press-fitting portion 35 of the connecting portion 34 is accommodated in the pre-accommodating chamber 220 a of the aligning plate 20 in the standby position. In this state, the contact 3 is gently held by the alignment plate 20 by adjusting the clearance of the contact surface. The alignment plate 20 placed in the standby position in which the contacts 3 are gently held is separated from the housing 2 by the connecting portion 250 b of the alignment plate 20. Even after the separation, the alignment plate 20 is held by the contacts 3.

  The alignment plate 20 is in contact with the side surface of the contact 3 with the adjusted clearance in a state in which the press-fit portion 35 of the contact 3 is accommodated in the pre-accommodating chamber 220a. Is held in. Thereby, even after the alignment plate 20 is separated from the housing 2, the alignment plate 20 is not detached from the contact 3.

  As shown in FIG. 10C, the alignment plate 20 is pushed down from the standby position to the normal press-fitting position. At this time, the alignment plate 20 slides downward in a state where the fixing portions 250 a at the left and right end portions are engaged with the grooves 21 a of the support portion 21 of the housing 2 and are supported by the support portion 21 of the housing 2. At this time, the base 22 provided in the housing 2 and the base 260 provided in the alignment plate 20 both prevent the contact 3 from being dragged and moved by the slide of the alignment plate 20. In some cases, the lower surface of the connecting portion 32 at the tip of the contact 3 may be supported by another support means to ensure the suppression effect. As a result, the positional deviation of the contact 3 due to the contact 3 being dragged by the slide operation of the alignment plate 20 and moving downward is suppressed.

  As shown in FIG. 10C, the press-fitting portion 35 of the contact 3 moves from the pre-accommodation chamber 220a to the post-accommodation chamber 220b by moving the alignment plate 20 from the standby position to the normal fitting position. Is press-fitted into the groove 230. As a result, the contacts 3 are held on the alignment plate 20 in a state where the tips are aligned, so that the surface mount connector 1 in which the positional deflection of the connecting portions 32 at the tips of the contacts 3 is adjusted is obtained. Since the vicinity of the tip of the contact 3 is held by the alignment plate 20, the surface mount connector 1 in which the suppression of the deflection width at the tip of the contact 3 acts effectively can be obtained.

  As shown in FIG. 10C, the alignment plate 20 slides at a position away from the housing 2 and is disconnected by the connecting portion 250b, so that a direct thermal influence exerted from the housing 2 is suppressed. . The alignment plate 20 is formed with a storage chamber 220 in which the contact 3 is stored on the front surface side, but a similar concave structure is formed on the back surface side along the left-right direction. Thereby, since the thermal balance between the front surface side and the back surface side of the alignment plate 20 itself is ensured, even if the alignment plate 20 is exposed to a high temperature environment, warpage and deformation are suppressed.

<Mounting on Circuit Board> The mounting of the surface mount connector 1 on the circuit board PB will be described with reference to the drawings. FIG. 11 is an external perspective view showing a state in which the surface mount connector according to the embodiment of the present invention is mounted on the circuit board.
As shown in FIG. 11, the surface mount connector 1 is soldered to the circuit board PB by the connection portion 32 of the contact 3 extending from the rear surface 2 a of the housing 2 and the reinforcing metal fittings 4 provided on the left and right side surfaces 2 e and 2 f of the housing 2. It is fixed. The connection part 32 is connected to a terminal (not shown) printed on the circuit board PB.

In the case of the present embodiment, eight connecting portions 32 are arranged in a line in the left-right direction, and the tip of the connecting portion 34 connected to the base portion is held in the storage chamber 220 of the alignment plate 20. When exposed to a high temperature atmosphere at the time of solder mounting, the housing 2 may be warped or twisted due to thermal deformation. However, the surface mount connector 1 according to the present embodiment has contacts 3 that are aligned plates 20. When in the aligned state, the alignment plate 20 is separated from the housing 2, so that the thermal effect of the housing 2 is suppressed by the separation. In addition, since the alignment plate 20 itself has the same structure on the front and back surfaces, the warpage and deformation are suppressed.

  <Principle> In order to improve the coplanarity of the contacts 3 of the surface mount connector 1, an alignment plate 20 is formed on the rear surface of the housing 2, and the contacts 3 extending from the housing 2 toward the circuit board PB are aligned here. The technology is conventionally known. However, in this method, deformation of the housing 2 under a high temperature environment appears on the alignment plate 20 as it is, and in this case, the contact 3 is held in a state where warpage or twisting occurs. Therefore, even if the contact 3 has a coplanarity adjusted before the high temperature load, the contact 3 having warpage or twisting is disposed after the high temperature load.

  The present invention suppresses the influence of the thermal deformation of the housing 2 so that the state in which the coplanarity of the contact 3 is adjusted can be maintained even when the housing 3 is exposed to a high temperature environment during solder mounting. 20 is provided. The principle is that the housing 2 having a relatively large structure that is susceptible to thermal deformation in a high temperature environment and the alignment plate 20 that is relatively small in structure and less susceptible to thermal deformation are separated in a finished product state. Then, the adjusted coplanarity state is maintained by cutting off the influence of the thermal deformation of the housing 2 on the alignment plate 20 holding the contact 3 having the adjusted coplanarity. In particular, since the alignment of the connecting portion 32 at the tip of the contact 3 connected to the terminal of the circuit board PB in the solder mounting process requires high accuracy, the surface mount connector 1 according to the present embodiment has the tip of the contact 3 at the tip. The alignment plate 20 is assembled in the vicinity of the connection portion 32 in order to reduce the positional fluctuation of the connection portion 32.

<Effect> The surface mount connector 1 according to the present embodiment can exhibit the following effects.
(1) Since the surface mount connector 1 according to this embodiment includes the alignment plate 20, the contact 3 can be held in an aligned state. In particular, the alignment plate 20 has a connection portion at the tip of the contact 3. Since the vicinity of 32 is held, the surface mount connector 1 provided with the connection part 32 in which coplanarity is adjusted is obtained.
(2) Since the surface mount connector 1 according to the present embodiment is in a finished product state and the alignment plate 20 is separated from the housing 2, the alignment plate 20 which is not easily affected by thermal deformation of the housing 2 is obtained. . As a result, the surface-mounted connector 1 including the alignment plate 20 in which the coplanarity of the contact 3 can be maintained even when exposed to a high temperature environment during solder mounting can be obtained.

(3) The alignment plate 20 is formed integrally with the housing 2, and when the contact 3 is formed in the normal forming posture, the alignment plate 20 is in the standby position and is separated from the housing 2 to the press-fitting position that holds the contact 3. Since it is slid along the rear surface of the housing 2, the surface mount connector 1 that does not increase man-hours such as separately forming and assembling the alignment plate 20 can be obtained.
(4) The alignment plate 20 is provided with a structure on the front surface side that accommodates the contacts 3 on the back surface side where the contacts 3 are not accommodated. As described above, since the thermal balance is considered on the front and back surfaces of the alignment plate 20, the surface mount connector provided with the alignment plate 20 in which deformation such as warpage is suppressed even when exposed to a high temperature environment. 1 is obtained.

(5) The alignment plate 20 includes a dedicated jig because the press-fitting portion 35 of the contact 3 in the normal forming posture can be fitted into the groove 230 in the rear chamber 220b by a sliding operation along the housing 2. Thus, the surface mount connector 1 including the alignment plate 20 that can easily hold the contacts 3 can be obtained.
(6) The pre-accommodating chamber 220a of the alignment plate 20 includes an opening for receiving the press-fit portion 35 of the contact 3 bent in a normal forming posture, and the opening has a taper for inviting reception. Provided. Thereby, the surface mount connector 1 provided with the alignment board 20 which can perform the bending process to the regular forming attitude | position of the contact 3 smoothly is obtained.

(7) Near the lower edge of the contact hole 23 of the housing 2, the bases 22 and 260 for supporting the bending position of the contact 3 during bending are provided. Thereby, the surface mount connector 1 provided with the contact 3 in which the accuracy of the bending position of the contact 3 is adjusted is obtained.
(8) The bases 22 and 260 that support the bending position of the contact 3 provided at the lower edge of the contact hole 23 of the housing 2 are provided with inclined portions 22a and 260a. As a result, the contact 3 can be bent to an angle slightly larger than 90 degrees in consideration of the effect of springback, so that the surface mount connector 1 capable of adjusting the contact 3 to a normal forming posture is obtained.

(9) Since the left and right side surfaces 2e and 2f of the housing 3 are provided with the reinforcing metal fittings 4 for reinforcing the solder mounting connection strength with the circuit board PB, the surface mount connector 1 with enhanced solder mounting strength is obtained.
(10) The press-fitting mechanism between the alignment plate 20 that holds the contact 3 and the contact 3 is that the contact 3 is press-fitted into the press-fitting portion 35 having a protruding portion 350 that can be formed by press molding, and the alignment plate 20 is press-fitted. It is comprised from the storage chamber 220 provided with the groove | channel 230 of the cross-sectional concave shape which receives the part 35. FIG. Thus, the surface mount connector 1 provided with the press fit mechanism which consists of an easily processable structure is obtained.

(11) When the alignment plate 20 is slid from the standby position to the normal press-fitting position, the lower surface of the contact 3 is supported by the upper surfaces of the bases 22 and 260, so that the contact 3 is caught by the accommodation chamber 220 of the alignment plate 20. As a result of being dragged in the direction, the surface mount connector 1 is obtained in which the positional deviation of the connecting portion 23 at the tip of the contact 3 does not occur.

<Modification, etc.>
The technical scope of the present invention is not construed as being limited to the configurations, arrangements, materials, means, and the like shown in the present embodiment. This embodiment is only an example of an embodiment included in the technical scope of the present invention. Within the scope of the technical idea of the present invention, it is allowed to take a configuration, position, and shape other than the present embodiment.
In this embodiment, the alignment plate 20 is formed integrally with the housing 2, but is not limited to this. For example, it may be molded separately from the housing 2 and later assembled to the housing 2, and the assembling means is not limited. For example, it may be provided with an engaging means having a concavo-convex structure with the housing 2 or may be engaged by a claw structure. Further, there may be a method in which there is no engaging means and the alignment plate 20 is placed on the rear surface of the housing.
Even if such a modification is added, the above-described effects are generally exhibited.

DESCRIPTION OF SYMBOLS 1 Surface mount connector 2 Housing 2a Rear surface 2b Front surface 2c Bottom surface 2d Upper surface 2e, 2f Side surface 20 Alignment plate 210 Main body 220 Storage chamber 220a Storage front chamber 220b Storage rear chamber 230 Groove 250 Support portion 250a Fixing portion 250b Connecting portion 260 Base 260a Inclined portion 21 support part 21a groove 22 base 22a inclined part 23 contact hole 25 press-fit part 26 reinforcing bracket fixing part 3 contact 31 fixing part 32 connecting part 33 contact part 34 connecting part 35 press-fitting part 350 overhanging part 4 reinforcing metal fitting PB circuit board

Claims (6)

A box-shaped housing whose bottom surface is in contact with the circuit board, a contact held by the rear surface of the housing, and a connecting part connected to the solder mounting part at the front end extending toward the circuit board at a different angle while extending; and the housing A surface mount connector comprising an alignment plate for accommodating a part of the connecting portion on the rear surface and aligning the contacts,
There is a state in which the alignment plate is slidable in the vertical direction along the rear surface,
A normal press-fitting position for holding the connecting part in the sliding process;
A standby position allowing the connection portion to be received in a state where the contact is bent in a normal forming posture;
A surface mount connector characterized in that the alignment plate is slid from the standby position to the normal press-fitting position to align the contacts. The connecting portion includes a press-fit portion having a protruding portion in the width direction,
The alignment plate includes a storage chamber having a pre-accommodation chamber that allows the press-fit portion to be received and a post-accommodation chamber that is connected to the pre-accommodation chamber and into which the press-fit portion is press-fitted.
In the standby position, the press-fitting part is in the front chamber.
The surface mount connector according to claim 1, wherein the press-fitting portion is located in the rear chamber at the regular press-fitting position.   The surface mount connector according to claim 2, wherein the rear chamber is provided with a groove into which the press-fitting portion is press-fitted.   4. The surface mount connector according to claim 1, wherein the alignment plate is provided integrally with the housing and is slidable along a rear surface of the housing by a release operation. 5.   4. The alignment plate according to claim 1, wherein the alignment plate is integrally formed through a connecting portion connected to the housing, and is slidable along the rear surface of the housing by a cutting operation of the connecting portion. The surface mount connector described in the section.   The connecting portion is provided at an end portion of the alignment plate in the width direction, a fixing portion appears at an end portion of the connecting portion after separation, and the fixing portion is vertically moved along the rear surface of the housing in the housing. 6. The surface mount connector according to claim 5, further comprising a support portion having a groove for guiding in a slidable direction.

Images