JP3687886B2 - Board mounted connector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a board-mounted connector for realizing electrical interconnection with another circuit board, card, electronic device or the like mounted on a circuit board and placed on the top surface side thereof.
[0002]
[Prior art]
Examples of this type of connector are disclosed in Japanese Patent Laid-Open Nos. 6-68941 and 8-162227. The disclosed board mounted connector includes a housing and a plurality of contacts supported thereon. The contact is a part supported by the housing, a connection part extending to one side of the contact and mounted on the surface of the circuit board, and a contact part for making electrical contact with a connected body such as a card or other connector device. Have A contact part contains the part which provides the elastic force for making elastic contact with respect to the to-be-connected body mounted in the top side.
[0003]
Problems to be Solved by the Invention
In recent years, this type of connector is required to be small and low in profile. Although the connector disclosed in the above-mentioned publication has a shape that can satisfy a certain degree of requirement, a sufficient spring elastic force cannot be obtained at the contact portion of the contact, and a request for further miniaturization and reduction in height (1 mm or less, for example, (Fitting height of about 0.8 mm) cannot be supported. It is an object of the present invention to provide a board-mounted connector that can satisfy such requirements, and in particular, to provide a connector that can realize stable elastic contact with sufficient elastic force while being small and low in profile. To do.
[0004]
[Means for Solving the Problems]
The present invention includes a support portion mounted on a circuit board and supported by a housing, a connection portion located on one side of the support portion and connected to the circuit board, and located on the opposite side of the support portion. In the board-mounted connector having a plurality of contacts having a contact portion that elastically contacts with an object to be connected placed on the surface side on the metal plate surface, each of the contact portions of the plurality of contacts is separated from the support portion. A downward projecting portion that extends downward at a distant position and forms a convex shape downward, and a curved portion that curves to the top side while forming a convex shape downward again on the front side that is extended from the downward projecting portion And an arm portion including a contact protrusion that extends from the bending portion toward the rear apex and contacts the connected body in the vicinity of the tip, and the contact protrusion includes the downward protrusion and the bending portion. To form a convex shape that curves upward. Characterized in that it is provided on the side position after exceeding the top of the part.
[0005]
Preferably, the contact has a narrow neck portion at least at a part between the support portion and the curved portion.
[0006]
Preferably, the constricted portion includes the downward projecting portion.
[0007]
Preferably, the support portion is insert-molded and supported by the housing.
[0008]
Preferably, an inflection portion that is bent relatively abruptly is provided between the bending portion and the arm portion.
[0009]
Preferably, the housing includes protective end walls for protecting the contact portions on both outer sides of the row of the contact portions of the plurality of contacts, and a concave portion is provided in a bottom intermediate portion of the protective end walls. It is formed.
[0010]
The housing may be provided with a plurality of partition walls that partition between contact portions of the adjacent contacts.
[0011]
Further, the housing extends in parallel to the plurality of contact rows, supports a main portion, and a pair of end walls extending from both ends of the main portion to both outer sides of the contact portion; It is effective that a pair of end walls are connected to each other, and a connecting portion that surrounds the contact portion together with the support portion and the end wall is provided.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
A board mounted connector which is a preferred embodiment of the present invention will be described below with reference to the accompanying drawings.
[0013]
1A and 1B are diagrams showing an embodiment of a board-mounted connector according to the present invention, wherein FIG. 1A is a front view, FIG. 1B is a bottom view, and FIG. 1C is a side view. FIG. 2 is a cross-sectional view taken along line AA in FIG.
[0014]
According to FIGS. 1 and 2, the board mounted connector 10 includes an insulating housing 20 and a plurality of contacts 30 supported thereon. The housing 20 is substantially U-shaped, and has a main portion 21 extending in parallel with the row of contacts 30 and end walls 22 extending on one side from both ends thereof. The end walls 22 are located on both outer sides of the plurality of contacts 30. A recess 24 is provided at an intermediate position on the bottom surface of the end wall 22. The contact 30 is insert-molded and supported and fixed to the housing 20 in the main portion 21. Positioning posts 23a and 23b for positioning the board mounted connector 10 when they are placed on a circuit board (not shown) are formed at positions near both ends of the bottom surface of the main portion 21.
[0015]
According to FIG. 2, the contact 30 is a substantially L-shaped support portion 31 located in the main portion 21, extends from the support portion 31 to the front side, and extends from a midway position in the height direction of the main portion 21 of the housing 20. The contact portion 32 and the surface mount type connecting portion 33 extending rearward along the bottom surface of the main portion 21 are provided. Although the contact part 32 has a characteristic shape, the detail is mentioned later. The end wall 22 of the housing 20 described above has a length that substantially matches the contact portion 32 as shown in the figure, and simply protects the contact portion 32 until the board-mounted connector 10 is mounted on the circuit board. Act to do. Further, after the mounting on the circuit board, the end wall 22 abuts on the circuit board in the vicinity of the tip and acts to maintain the posture of the housing 20.
[0016]
FIGS. 3A and 3B are views showing the contact together with the carrier strip, where FIG. 3A is a plan view and FIG. 3B is a front view. FIG. 4 is a partial bottom view showing the contact portion of the contact.
[0017]
According to FIG. 3, the contacts 30 are formed at a predetermined pitch with respect to the carrier strip 60, and are insert-molded in this state to realize the board-mounted connector 10 shown in FIGS. Shoulders 35 are formed along the edges of both ends at the boundary position between the support portion 31 and the contact portion 32 of each contact 30. The shoulder 35 is placed substantially in contact with the outer surface of the housing 20 when it is molded by an insert mold, and serves to stabilize the support of the contact 30 and maintain its position accurately.
[0018]
The contact portion 32 has a downward projecting portion 51 that forms a convex shape that extends downward from a position away from the support portion 31 and curves downward, and a convex shape that curves downward on the front side that extends from the downward projecting portion 51. , And an arm portion 53 that extends from the bending portion 52 in an inclined manner toward the rear apex side. In the vicinity of the tip of the arm portion 53, a contact protrusion 54 for contacting the connected body is provided. The arm portion 53 has a shape that rises relatively steeply from the curved portion 52, thereby defining the inflection portion 55. The distal end side of the arm portion 53 has a bifurcated shape, so that two contact protrusions 54 are provided for each contact 30. The contact protrusion 54 is a rear side beyond the top 56a of the convex portion 56 that is curved upwardly defined by the downward protrusion 51 and the curved portion 52, and slightly forward of the downward protrusion 51. Configured to be located in
[0019]
Further, as shown in FIG. 4, a constricted portion 57 is formed at a portion including the downward projecting portion 51 between the support portion 31 and the curved portion 52 of the contact portion 32. The narrowest part 58 of the constricted part 57 is located slightly in front of the downward projecting part 51.
[0020]
The contact portion 32 of the contact 30 according to the present embodiment can provide a sufficient elastic force for realizing a stable connection with the connected body even though the space occupied by the arrangement is relatively small. The urging force that presses the contact protrusion 54 against the connected body when the connected body is placed on the top surface side of the board-mounted connector 10 is approximately the contact portion 32 having the characteristic shape as described above. Provided by the spring elasticity obtained from the whole. In particular, it should be noted that when the body to be connected is placed, a force in the rotational direction that slightly moves the bending portion 52 to the top side acts on the contact portion 32 in addition to the normal spring repulsion force. It is. Therefore, the connector 10 can provide a highly reliable electrical connection with a mounting area being minimized and a relatively low profile.
[0021]
Another embodiment of the board mounted connector according to the present invention will be described with reference to FIGS. 5 is a perspective view of another embodiment of the board mounted connector according to the present invention, FIG. 6 is a plan view of the board mounted connector of FIG. 5, FIG. 7 is a front view of the board mounted connector of FIG. 9 is a bottom view of the board mounted connector, FIG. 9 is a right side view of the board mounted connector of FIG. 5, and FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG.
[0022]
According to FIGS. 5 to 10, the board mounted connector 110 includes an insulating housing 120 and a plurality of contacts 130 supported by the same, like the board mounted connector 10 shown in FIGS. 1 to 4.
[0023]
Here, the contact 130 has the same configuration as the contact 30 of the board-mounted connector 10 shown in FIGS. 1 to 4, and has a substantially L-shaped support portion 131 and a support portion located in the main portion 121 of the housing 120. A contact portion 132 extending from 131 to the front side and extending from an intermediate position in the height direction of the main portion 121 of the housing 120, and a surface mount type connecting portion 133 extending rearward along the bottom surface of the main portion 121. The contact 130 has the same configuration as the contact 30, and the configuration and operation of the support portion 131, the contact portion 132, and the connection portion 133 are the same as the configuration and operation of the support portion 31, the contact portion 32, and the connection portion 33. Therefore, the description thereof is omitted.
[0024]
The housing 120 is formed by molding an insulating resin, and extends in parallel with the rows of contacts 130 in the same manner as the housing 20 shown in FIGS. 1 to 4. The main portion 121 supports the support portions 131 of the contacts 130. A pair of end walls 122 extending from both ends of the contact 130 to the outside of the contact portion 132 of the contact 130 and protecting the contact portion 132 are provided. However, unlike the housing 20, the housing 120 further includes a main portion 121 and a connecting portion 123 that surrounds the contact portion 132 together with the end wall 122 by connecting a pair of end walls 122. Since the connecting portion 123 exists, the contact portion 132 of the contact 130 is more reliably protected and the strength of the housing 120 itself is improved. The housing 120 is provided with a plurality of partition walls 126 that partition the contact portions 132 of the adjacent contacts 130. Interference and contact between the contact portions 132 of the adjacent contacts 130 are avoided by the partition wall 126. In this embodiment, the partition wall 126 is provided so as to connect the main part 121 and the connecting part 123, but if the interference and contact between the contact parts 132 of the adjacent contacts 130 can be avoided, There is no need to connect the connecting portion 123. Further, a recess 127 is provided on the bottom surface of the main portion 121 of the housing 120 and around the connection portion 133 of each contact 130 so as to surround the connection portion 133. A solder fillet is formed in the recess 127 when the connection portion 133 is soldered on a circuit board (not shown). 5 to 10, reference numeral 124 denotes a recess formed in the end wall 122, and reference numeral 125 denotes a positioning post for aligning the board-mounted connector 110 when it is placed on the circuit board.
[0025]
As described above, the board-mounted connector according to the preferred embodiment of the present invention has been described. However, this is merely an example, and various modifications and changes can be made by those skilled in the art.
[0026]
【The invention's effect】
According to the board-mounted connector of the present invention, each contact portion of the plurality of contacts extends downward at a position away from the support portion to form a convex downward projection, and again on the front side extended from the downward projection. An arm having a curved portion extending toward the top side while forming a convex shape toward the top, and a contact protrusion that extends from the curved portion to the rear top side so as to contact the body to be connected. The contact protrusion is provided at a rear position beyond the apex of the convexly curved portion defined by the downward protrusion and the curved portion. Therefore, a stable electrical connection with the connected body is provided with a relatively low profile.
[0027]
In addition, since the housing is provided with a plurality of partition walls for partitioning between the contact portions of the adjacent contacts, interference and contact between the contact portions of the adjacent contacts can be avoided by the partition walls.
[0028]
Further, the housing extends in parallel with the plurality of contact rows, supports a main portion, and a pair of end walls extending from both ends of the main portion to both outer sides of the contact portion; Since the contact portion is connected to the support portion and the end wall to connect the pair of end walls, the contact contact portion is more reliably protected and the strength of the housing itself is improved. Will do.
[Brief description of the drawings]
1A and 1B are diagrams showing an embodiment of a board-mounted connector according to the present invention, in which FIG. 1A is a front view, FIG. 1B is a bottom view, and FIG.
FIG. 2 is a cross-sectional view taken along line AA in FIG.
FIGS. 3A and 3B show a contact with a carrier strip, in which FIG. 3A is a plan view and FIG. 3B is a front view.
FIG. 4 is a partial bottom view showing a contact portion of a contact.
FIG. 5 is a perspective view of another embodiment of a board-mounted connector according to the present invention.
6 is a plan view of the board-mounted connector of FIG. 5. FIG.
7 is a front view of the board-mounted connector of FIG. 5. FIG.
8 is a bottom view of the board-mounted connector of FIG.
9 is a right side view of the board mounted connector of FIG.
10 is an enlarged cross-sectional view taken along line 10-10 of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Board mounted connector 20 Housing 30 Contact 31 Support part 32 Contact part 33 Connection part 51 Downward projecting part 52 Curved part 53 Arm part 54 Contact projecting part 56 Convex-shaped part 56a Top part

Claims (3)

A support part mounted on the circuit board and supported by the housing, a connection part located on one side of the support part and connected to the circuit board, and placed on the top surface side opposite to the support part. In a board-mounted connector having a plurality of contacts including a contact portion that elastically contacts a connected body to be connected with a metal plate surface,
The contact portion of each of the plurality of contacts extends downward at a position away from the support portion and forms a downward convex shape, and downward again on the front side extended from the downward projection. A curved portion extending curvedly toward the top side while forming a convex shape, and an arm portion including a contact protrusion that extends inclinedly from the curved portion toward the rear apex side and contacts the connected body in the vicinity of the tip. The contact protrusion is provided at a rear position beyond the top of the convexly curved portion defined by the downward protrusion and the curved portion at a position between the two. Board mounted connector. The board-mounted connector according to claim 1, wherein the housing is provided with a plurality of partition walls that partition between contact portions of the adjacent contacts. The housing extends in parallel to the plurality of contact rows, supports a support portion, a pair of end walls extending from both ends of the main portion to both outer sides of the contact portion, and the pair of pairs. The board-mounted connector according to claim 1, further comprising an end wall connected and a connecting portion surrounding the contact portion together with the support portion and the end wall.

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