KR101007791B1 - Connector for printed circuit boards - Google Patents

Abstract

PURPOSE: A connector for a printed circuit board capable of increasing the mounting space of the other electronic components is provided to secure mechanical fix by broadening soldering area of a pair of lead unit. CONSTITUTION: Two contacts are accepted to a connector housing(2). A counterpart connector is a connector for a print wiring plate(1). A contactor and a supporting plate part are formed into one body. A pair of lead parts is formed by bending a plate part for lead. The connector housing includes two contact containing parts(5). The contactor is inserted into an empty part.

Description

Connector for printed wiring board {CONNECTOR FOR PRINTED CIRCUIT BOARDS}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector for surface mounting on a printed wiring board, and more particularly, to a connector for a top printed wiring board in which two contacts are accommodated in a connector housing, and a mating connector is fitted in a vertical direction with respect to the connector housing.

The connector surface-mounted on the printed wiring board solders the lead portion of the contact to the printed wiring board, and performs electrical connection and mechanical fixation. Therefore, the mechanical contact is weak in the connector having a small number of contacts, and the plug-out operation accompanying the mating connection of the mating connector is performed. There exists a possibility of peeling from a printed wiring board by external force, such as these.

Patent documents 1 to 3 disclose a surface mounting connector in which two contacts are accommodated in a connector housing.

In the conventional surface mount connector having two contacts, the contacts are all made of pin terminals, and in order to secure the creepage distance on the printed wiring board and the soldering area of the lead portion, the contact requires complicated bending processing, It was difficult to reduce the manufacturing cost of the. In addition, in order to replenish the soldered area of the lead portion and to secure mechanical fixation, in the connectors disclosed in Patent Documents 2 and 3, reinforcing metal members are fitted to both side ends of the connector housing, and the reinforcing metal members are mounted at the time of mounting. Is soldered together with the lead portion to the printed wiring board. When such a reinforcing metal member is used, the number of parts and manufacturing process increase by that, and manufacturing cost increases.

[Patent Document 1] Japanese Patent Application Laid-Open No. 10-308265 [Patent Document 2] Japanese Patent Application Laid-Open No. 10-172649 [Patent Document 3] Japanese Patent Application Laid-Open No. 2000-164110

The present invention solves the problem of the surface mount connector in which the two contacts are accommodated in the connector housing described above, reduces the mounting area on the printed wiring board by miniaturization and secures mechanical fixing by increasing the soldered area of the lead portion. The object of this invention is to provide the connector for printed wiring boards which can raise the holding force of a connector housing and a contact.

In order to solve the said subject, this invention has the following structures.

An invention according to claim 1 is a connector for surface-mounting on a printed wiring board, wherein two contacts are accommodated in a connector housing, and a mating connector is a connector for a top printed wiring board fitted in a vertical direction with respect to the connector housing. Punching the conductive metal thin plate, the contact portion and the support plate portion is formed in parallel with the base portion, while forming two lead plate portions extending in opposite directions to the contact portion and the support plate portion on both end portions of the base portion. And a pair of lead portions are formed by bending both lead plate portions in a substantially perpendicular transverse direction with respect to the base portion, and the connector housing includes the two contacts in parallel and separately spaced apart from each other. Two contact receptacles, each contact receptacle having the connector housing The opening part which is opened in a bottom part, and the insertion part into which the said contact part of the said contact is inserted, and the insertion hole into which the said support plate part is press-fitted is formed in parallel, and is spaced apart, The said part is connected to the said contact connector to the said contact part. The pair of lead portions, which are open upward from the top surface of the connector housing and are provided at both end portions of the base portion of the two contacts accommodated in the two contact receiving portions, for fitting connection, respectively. It extends laterally and is arrange | positioned inside the outer peripheral area of the said connector housing, It is characterized by the above-mentioned.

In the invention according to claim 2, in the connector for a printed wiring board according to claim 1, the base portion of the contact extends to both sides of the contact portion and the support plate portion, and the pair of lead portions are provided at both ends of the extension portion. It is characterized by being.

The invention according to claim 3 is characterized in that the two lead plate portions of the contact are punched into a contour rectangle, and the lead plate portion is bent to form the pair of lead portions into a contour rectangle. .

The invention according to claim 4 is characterized in that the lead portion has a shape in which a cutout portion is formed at a corner of a front end portion of a contour rectangle.

The invention according to claims 5 and 7 specifies the contact portion of the contact in the form of a fork.

The invention according to claim 6 is surface-mounted on a narrow, elongated printed wiring board for mounting the LED of the LED liquid crystal TV according to claim 1 or 2 on the printed circuit board connector according to the present invention, for example, an LED array board. It is specific to doing.

The invention according to claim 8 is for surface-mounting the connector for a printed wiring board according to the present invention to a narrow and long printed wiring board for mounting an LED of an LED liquid crystal TV, for example, at both ends of the LED array board. It's specific.

As described above, according to the present invention, it is possible to miniaturize the entire connector and to reduce the mounting area on the printed wiring board, while increasing the soldering area of the pair of lead portions of each contact to secure mechanical fixing. Further, since the pair of lead portions extend in the outer lateral direction and are disposed inward of the outer circumferential region of the connector housing, the creepage distance between the lead portions can be ensured while reducing the mounting area on the printed wiring board. In addition, it is possible to increase the mounting space of other electronic components. Moreover, since the said contact can manufacture a conductive metal thin plate only by a punching process and simple bending process, material cost and manufacturing cost can be reduced significantly.

In addition, the contacts separately spaced and accommodated in the two contact receiving portions of the connector housing, the contact portion is inserted and fixed to the holding portion is held, and the support plate portion integrally installed in parallel with the contact portion Since it is pressed into the insertion hole and fixedly held, the holding force of the connector housing and the contact increases. Therefore, sufficient holding force is secured also against the insertion / extraction operation and other external force of the mating connector which is fitted in the vertical direction with respect to the connector housing. In addition, as described above, since the soldering area of the pair of lead portions of the contact is large and the mechanical fixing to the printed wiring board is sufficiently secured, there is no fear that the contact is peeled off from the printed wiring board by an external force.

The connector which concerns on this invention which has the above-mentioned structure is suitable for surface-mounting on the narrow and long printed wiring board which mounts LED of an LED liquid crystal TV, for example, the both ends of an LED array board.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view seen from the front upper side of the connector for printed wiring boards which concerns on this invention.
2 is a perspective view from below the bottom of the connector for a printed wiring board according to the present invention;
3 is a front view of a connector for a printed wiring board according to the present invention.
4 is a rear view of the connector for a printed wiring board according to the present invention.
5 is a plan view of a connector for a printed wiring board according to the present invention.
6 is a bottom view of the connector for a printed wiring board according to the present invention.
7 is a cross-sectional view taken along line 7-7 of FIG.
8 is a view showing a contact of a connector for a printed wiring board according to the present invention, (a) is a front view, (b) a left side view, and (c) a bottom view.
Fig. 9 is an explanatory diagram showing a punching processing step of a contact of a connector for a printed wiring board according to the present invention.
10 is a perspective view showing an example of use of the connector for a printed wiring board according to the present invention;
The enlarged perspective view of the principal part of the connector for printed wiring boards which concerns on this invention.
It is a principal part longitudinal side view which shows the fitting connection state of the connector for printed wiring boards and the partner connector which concerns on this invention.
Fig. 13 is an explanatory diagram showing a mounting surface of a connector for a printed wiring board according to the present invention.
It is explanatory drawing which shows the modification of the mounting surface of the connector for printed wiring boards which concerns on this invention.
It is explanatory drawing which shows the modification of a lead part shape with respect to the contact of the connector for printed wiring boards which concerns on this invention.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on drawing.

1 to 7 show the connector for a printed wiring board according to the present invention. The connector 1 for a printed wiring board is a surface mount type base connector, and two contacts 21 and 21 are accommodated in the connector housing 2.

The connector housing 2 is formed of an insulating material such as nylon resin, forms a rectangular parallelepiped having a short contour shape, is substantially equal in width and height, and is formed long in the front and rear direction, and has a mating connector (described later on the front side) A concave portion 3 to which the lock arm 34 (see FIG. 12) of the 31 is coupled is formed, and a locking projection 4 of the lock arm 34 protrudes from the upper end of the inner side of the concave portion 3. It is. In the connector housing 2, two contact receiving portions 5, 5 are arranged in parallel in the front-rear direction. As shown in FIG. 7, the contact receiving portions 5 and 5 include the compensating portions 6 and 6 into which the contact portions 22 and 22 of the contacts 21 and 21 to be described later are fitted, and the contacts 21. , The insertion holes 7 and 7 into which the supporting plate portions 23 and 23 of the support plate 21 are press-fitted are formed in parallel and spaced apart in the front-rear direction, respectively. Each component part 6 and the insertion hole 7 are opening 8 and 9 in the bottom part of the connector housing 2, and the component part 6 has the mating connector 31 with respect to the connector housing 2. In order to fit-fit in the up-down direction, it has the top opening 10 opened upward from the top surface of the connector housing 2.

As shown in Figs. 8 and 9, the two contacts 21 and 21 are manufactured by punching and bending a conductive metal thin plate such as a brass plate. First, as shown in FIG. 9, the fork-shaped contact part 22 and the elongate support plate part 23 are paralleled and integrated with the base part 24 by the punching process of the metal thin plate of a raw material in one process of a press. At the same time, the base portion 24 extends to both sides of the contact portion 22 and the support plate portion 23, and the opposite end portions 24a and 24a extend in opposite directions to the contact portion 22 and the support plate portion 23. The contact blanks A formed by the two lead plate portions 25 and 25 extending to each other are punched out. In addition, the code | symbol B of FIG. 9 is a joint at the time of continuously processing the contact blank A by a press.

The two lead plate portions 25, 25 of the punched contact blanks A are bent in a crosswise direction perpendicular to the base portion 24 to form a pair of lead portions 26, 26. Thus, the contact 21 shown in FIG. 8 is completed. At the same time as the punching process of the contact blank A, the contact portion 22 has locking projections 27 and 27 at the contact portion 22, and the locking projections 28 and 28 and the locking tongue at the support plate 23. 29 are provided, respectively, and when the contact 21 is accommodated in the contact housing 2, it penetrates into the inner wall of the housing and prevents the contact 21 from falling off.

Although the pair of lead parts 26 and 26 of the contact 21 basically has a contour shape as a quadrangular shape as shown to Fig.15 (a), although big soldering area can be ensured, When the external force is applied to the lead portion 26, it is considered that the stress is concentrated at the corners of the square front ends, so that the front ends of the square as shown in Figs. 8 and 15 (b). By setting it as the shape which formed the cutout part 30 in the corner part, it is made to distribute a stress as uniformly as possible. In addition, about the shape of the lead part 26, it is possible to select various shapes. For example, (c) of FIG. 15 is a circular arc shape of the front-end part, FIG. 15 (d) is a shape which formed one recessed part in the front-end part corner, and FIG. The modification which made the shape which formed two recessed parts in the edge part is shown.

As described above, the contact 21 produced by the punching process and the simple bending process in a single step has a short development length L shown in FIG. 9, so that the material cost can be reduced and the manufacturing cost can be reduced. .

As shown in FIG. 7, the contact 21 which has the said structure is inserted in and received in each contact accommodating part 5 from the bottom side of the connector housing 2. As shown in FIG. The fork-shaped contact part 22 is inserted into the complainant part 6 through the bottom opening 8, and guide-coupled to the guide engaging grooves 11 and 11 formed in the inner wall surface where the compensator part 6 opposes each other. At the same time, the locking projections 27 and 27 are held in the housing inner wall to be held and fixed. On the other hand, the support plate part 23 is press-fitted into the insertion hole 7 through the bottom opening 9, and it is hold | maintained and fixed by making the locking projections 28 and 28 and the locking tongue 29 into the housing inner wall surface. Therefore, the contact 21 is hold | maintained and fixed to the connector housing 2 via the contact part 22 and the support plate part 23, and the holding force of the connector housing 2 and the contact 21 is raised.

As described above, the base portions 24 and 24 of the two contacts 21 and 21 which are separately spaced and accommodated in the two contact receiving portions 5 and 5 are held at the bottom of the connector housing 2. Extends in the front-rear direction in parallel with each other, and the pair of lead portions 26, 26 provided at the extending end portions 24a, 24a of the respective base portions 24 extend in the outer transverse direction, respectively, and further extend the connector housing. It is arrange | positioned inside rather than the outer periphery area | region R (refer FIG. 13) of (2). Therefore, the mounting area on a printed wiring board can be made small. Moreover, the soldering area of each lead part 26 can be enlarged. In the bottom four corners of the connector housing 2, the four lead portions 26 are soldered, thereby sufficiently securing the mechanical fixing to the printed wiring board. Further, since the lead portions 26 and 26 of one contact 21 extend in the opposite transverse direction with respect to the lead portions 26 and 26 of the other contact 21, the lead portions of both contacts 21 and 21 are the same. Creepage distance between (26, 26) can also be ensured. In addition, the code | symbol 43 in FIG. 13 is the soldering part of the circuit pattern of the printed wiring board (LED array board) 40 mentioned later.

In addition, in the mounting of the pair of contacts 21 and 21 shown in FIG. 13, one lead portion 26 of each contact 21 is positioned on the boundary line of the outer circumferential region R of the connector housing 2. Although arrange | positioned along with it, as shown in FIG. 14, both the lead parts 26 and 26 of each contact 21 can also be arrange | positioned inside the outer periphery area | region R of the connector housing 2. As shown in FIG.

Fig. 10 shows a narrow, elongated printed wiring board, for example, an LED array board 40, in which a large number of the printed circuit board connector 1 according to the present invention having the above-described configuration is mounted in parallel with the LEDs 41 of the LED liquid crystal TV. The use example which surface-mounted to is shown. The LED array board 40 has a structure in which an insulating layer is formed on an elongated substrate made of aluminum alloy, and a circuit pattern is printed on an upper surface of the insulating layer, and an upper end corner and a lower end of the thin liquid crystal panel 42. It is arranged along the edge.

A socket connector (relative connector) 31 connected to ends of two electric wires 37 and 38 for power supply and signal is fitted to the connector 1 surface-mounted on both end portions of the LED array board 40. . As shown in FIG. 12, the socket connector 31 accommodates two socket contacts 33 and 33 which are crimp-connected to the ends of the two wires 37 and 38 to the socket housing 32 separately. It is. The lock arm 34 is provided in the front surface of the socket housing 32 so that the support leg 35 can move to a support point, and the locking hook 36 protrudes from the front end of the lock arm 34. As shown in FIG.

The socket connector 31 is fitted in the vertical direction with respect to the connector housing 2 of the connector 1, and the socket contacts 33 and 33 are controlled from the top openings 10 and 10 of the socket housing 2. The lock arm 34 is inserted into the portions 6, 6, and fitted with the fork-shaped contacts 22, 22 to be electrically connected to the contacts 21, 21, while the lock arm 34 is recessed in the socket housing 2. Coupled to (3) and engaging the catching projection (36) at the tip end with the catching projection (4), the socket housing (32) is held and held in the connector housing (2), and the socket connector (relative connector) (31) Is fitted to the connector 1 and connected. In this way, the socket connector 31 fitted and connected to the connector 1 is inserted into and pulled out of the connector housing 2 of the connector 1 in the up-down direction. Contacts 21, 21 are securely fixed to the printed wiring board (LED array board) 40 and have a large soldering area, and thus are firmly fixed to the socket connector 31 through the wires 37 and 38. It is possible to effectively prevent the connector 1 from being separated from the printed wiring board (LED array board) 40 by an external force such as an unexpected pulling or twisting.

1 connector (base connector)
2: connector housing
3: recess
4: Hanging projection
5: contact receiving part
6: complainant
7: insertion hole
8, 9: bottom opening
10: top opening
11: guide combined groove
21: Contact
22: contact portion (fork type)
23: support plate
24: base part
24a, 24a: Extension both ends of the base part 24
25: plate part for lead
26: lead part
27, 28: hanging projection
29: jam tongue
30: ablation
31: mating connector (socket connector)
32: socket housing
33: socket contact
34: lock arm
35: support leg
36: hook hook
37, 38: wire
40: LED array board (printed wiring board)
41: LED
42: liquid crystal panel

Claims (8)

A connector for surface-mounting on a printed wiring board, in which two contacts 21 and 21 are accommodated in the connector housing 2, and a connector for a printed wiring board in which the mating connector is fitted and connected up and down with respect to the connector housing 2 ( 1),
The contacts 21 and 21 are punched out of a thin conductive metal plate so that the contact portion 22 and the support plate portion 23 are parallel to each other to be integrally formed with the base portion 24, and both ends of the base portion 24 are formed. Two lead plate portions 25, 25 extending in the opposite directions to the contact portions 22, 22 and the support plate portion 23 are formed in the portion, and the lead portions 25, 25 for both leads are formed on the base portion. A pair of lead portions 26, 26 are formed by bending in a transverse direction perpendicular to the angle of 24.
The connector housing 2 has two contact receiving portions 5, 5 in which the two contacts 21, 21 are parallel and separately spaced apart, and each contact receiving portion 5 is An opening 6 at the bottom of the connector housing 2, in which a contact part 6 into which the contact part 22 of the contact 21 is fitted, and an insertion hole 7 into which the support plate part 23 is press-fitted in parallel And the spaced apart portion 6 is open 10 at the top surface of the connector housing 2 so as to fit the mating connector to the contact portion 22. The pair of lead portions 26 and 26 provided at both end portions of the base portion 24 of the two contacts 21 and 21 accommodated in the two contact receiving portions 5 and 5, respectively. Extends outward in the transverse direction and is disposed more inward than the outer circumferential region R of the connector housing 2; It is a connector for a printed circuit board, characterized in that. The base part 24 of the said contact 21 is extended to both sides of the said contact part 22 and the support plate part 23, The extension part couples of both ends of the said base part 24 ( A connector for a printed wiring board, characterized in that the pair of lead portions (26, 26) are provided at 24a, 24a. The method of claim 1 or 2, wherein the two lead plate portions 25 and 25 of the contact 21 are punched and molded into a contoured rectangular shape, and the lead plate portions 25 and 25 are bent. A connector for a printed wiring board, characterized in that the pair of lead portions (26, 26) are formed in a contour rectangle. The connector for a printed wiring board according to claim 3, wherein the lead portion (26) has a shape in which a cutout portion (30, 30) is formed at both corner portions of the front end portion of the contour rectangle. The connector for a printed wiring board according to claim 1 or 2, wherein the contact portion (22) of the contact (21) is formed in a fork shape. The printed wiring board connector according to claim 1 or 2, wherein the printed wiring board is a narrow, long, printed wiring board on which the LED (41) of the LED liquid crystal TV is mounted, and is surface-mounted on both end portions thereof. The connector for a printed wiring board according to claim 4, wherein the contact portion (22) of the contact (21) is formed in a fork shape. The connector for a printed wiring board according to claim 4, wherein the printed wiring board is a narrow, elongated printed wiring board on which the LED (41) of the LED liquid crystal TV is mounted, and is surface-mounted on both ends thereof.

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