JPH07502620A - Connector board locks and how to use them to attach connectors to circuit boards - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] connector board lock Background of the invention Electrical connectors are housings designed to be mounted directly against the top surface of a circuit board. The connector contacts have terminations that mate with conductive traces on the circuit board. White part. The connector housing has holes in a pair of housing flanges. and a pair of board locks through corresponding holes drilled in the circuit board. Can be held on the road plate. In most cases, the circuit board holes are plated; The plating is located on the walls of the hole and the top and bottom surfaces of the board around the hole. Covering additional parts and placing board holes and connector housings at ground potential do. By installing a boardlock, the electrical connection between the connector and the board is free. Soldered by soldering. Each boardlock is attached to the top of the flange. to the customer during processing and assembling it into the circuit board. It is preferable to have a part that securely locks onto the connector during shipping. moreover Each boardlock firmly contacts the plated wall of the circuit board hole at the 1ν number position. It is preferable to touch it. In addition, the boardlock can be removed from the circuit board during final assembly. Provides high resistance to pulling force. It is constructed at low cost and provides the above features. Boardlocks can be quite valuable.

Overview of the invention According to one embodiment of the invention, a low cost board lock includes a connector flange and It is inserted through a hole in the circuit board and holds the connector and board firmly together, Ensure electrical connection between them. The boardlock is connected to the first diameter connector flange. diameter board and a second, larger diameter board hole. It is measured. Boardlock is sheet metal that is bent around a vertical axis. formed from one piece and received in a hole in the flange and a hole in the larger board, respectively. forming a generally tubular upper and lower hole-receiving portion. a pair of water A flat separation slot extends partially around the hordelock from each edge of the sheet metal However, the edge area of the lower tubular part is bent with a large radius of curvature to accommodate large circuit boards. Allows for a tight fit in the hole. Tubular upper and lower parts or slots The vertical middle part of the boardrotata, which is not separated by the tubular lower part at least one radiation in the form of a bump centered in the hole of the board; It is preferable to have a shaped outward protrusion. The tubular lower part is the upper part of the finger Inclined upwardly and radially outward such that the surface substantially abuts the lower surface of the flange. Board with slits extending diagonally (+E to 1 and forming fingers of I) The lower portion of the lock is tapered and lies substantially below the lower board surface, which includes Boardlock because it has an inclined slit that forms the ramp to be soldered Any upward pull force on the top pressurizes the solder between the lamp and the bottom surface of the circuit board. do.

The novel features of the invention will be better understood from the following description, along with the claims. cormorant.

Brief description of the drawing FIG. 1 shows mounting on a circuit board through the use of a boardlock constructed in accordance with the present invention. FIG.

Figure 2 is a front, top perspective view of one of the easily installed boardlocks of Figure 2; It is a diagram.

FIG. 3 is a perspective view of the board lock in FIG. 2 seen from the upper left.

Figure 4 shows sheet metal being cut and bent to form the boardlock of Figure 2. FIG.

Figure 5 shows the boardlock of Figure 2 with one unbent top tab attached to the water. It is a front view.

FIG. 6 is a view taken along line 6-6 in FIG.

FIG. 7 is a view taken along line 7-7 in FIG.

FIG. 8 is a view taken along line 8-8 in FIG. 5.

Figure 9: Final soldering installed on connector housing and circuit board before operation 7 is a cross-sectional view of the boat lock of FIG. 6 with a folded tab; FIG.

FIG. 10 is a cross-sectional view perpendicular to the device of FIG. 9;

Figure 11 is an enlargement of the portion of Figure 9 with the boardlock completely soldered in place. It's a big picture.

Example FIG. 1 shows an assembly 10 of electrical connector 12 and circuit board 14. FIG.

Connector 12 is connected to a lower surface facing the upper surface of a circuit board element or circuit board. Housing 1 comprising a pair of flange elements or flanges 20.22 having surfaces It has 6. A pair of identical board locks 24, 26 each have a connector flange and extends through aligned holes 30.32 in the circuit board, mechanically and normally Connect them together electrically. This connector 12 is a contact of another connector. A conductive trace (not shown) on the top surface of the circuit board and bonding end 36 mating with the (without contact) and has a terminal end 38 which is ultimately soldered thereto. This is a type of connector that nails the tact 34. "Top", "Bottom", "Vertical" etc. Terms such as are used only to facilitate the description of the present invention. It should be noted that the parts can be used in any direction with respect to gravity. be.

FIG. 2 shows the board lock 24 in detail. Boardlock 24 is originally flat. It is formed from a piece of sheet metal that is recessed into hollow tubular top and bottom holes. 40.42. The tubular upper portion 40 is It is designed to sit snugly within the flange hole, while the tubular lower part 4 2 is designed to fit snugly into the hole in the circuit board. tubular upper part 40 is a pair of adjacent flange holes designed to press firmly against the wall of the hole. The tubular lower portion has a substantially vertical edge portion or edges 44, 46, and the lower tubular portion a pair of adjacent lower edges 5 designed to press tightly against the walls of the hole; It has 0.52. Each edge does not need to be sharp, the top can be bent and rounded. It should be noted that The boardlock has five tabs 54 on the top. and they press against the top surface of the connector flange. The tubular lower portion 42 has a flap. A pair of fingers 56 designed to substantially contact the lower surface of the lunge. 58 to prevent it from being pulled upwardly from the board lock or connector flange. do. In addition, the tubular lower part is the vertical intermediate region of the boardrock, i.e. 62 along with a bump 60 inside the tubular lower portion in the large circuit board hole. Helps set the mind. Boardlock facilitates boardlock insertion1 What should be done with the bottom tapered portion 62 and 64 of χ1? Each bottom tapered part has a slit like 66. Nu to form a pair of generally upwardly facing ramps or contacts 70.72. and can come into contact with the solder used in the final assembly. these The characteristics of each are explained below.

Figure 4 is die cut from a larger sheet and bent into the shape shown in Figure 2. A sheet metal 74 piece is shown. Sheet metal moves from tubular bottom section to tubular top section It has a separation slot 76.78 of 1.chi..l separating a portion of the . Separation slot 7 6.78 defines a pair of upper edge regions 80.82 separated from a pair of underlined regions. leave. Each edge area has a corresponding slot from the boardlock vertical edge 88.89. and extends to the bottom 90 of the tray. The bottoms 90 of the slots are widely spaced and tubular. A wide vertical medium that joins the top and bottom sections and makes up about one-third of the sheet metal. A gap 62 is left.

FIG. 8 shows the configuration of FIG. 2 with respect to the flange and holes 30.32 in the circuit board. A bottom view of the boardlock is shown. Since the tubular upper part is bent with a drawing radius R1, It can be seen that the tubular upper portion extends approximately circularly. The wall and corner of the flange hole They are in contact at portions 100, 102 and vertical intermediate portions 62. The tubular lower portion 42 is , having an intermediate section that is a substantially vertical extension of the intermediate section of the tubular upper section. But long , the underlined regions 84 and 86 each extend substantially straight and form a circuit board. is bent to leave a corner portion 104, 106 that joins the wall of hole 32 of .

The average radius of curvature of the underlined region 86 is much larger than the .14 radius of curvature of the upper portion 40. big. The radius of curvature of region 86 is defined by the point 110 at the bottom of the separation slot, by the edge. A virtual circle located on the point 104 formed by and the midpoint 112 between the other two points. The radius of curvature is considered to be 14. The bump 60 is connected to the bump 60 and the edge 104 . 106 to provide contact at three points and determine the location of the tubular lower portion 42 in the hole in the circuit board. , so the board lock is held from tilting. That is, the axis is Hold vertical and consistent with respect to flanges and board holes. Bump 60? Otherwise, the lower part of the vertical intermediate section would be pressed towards the wall of the hole.

FIG. 10 shows connector flange 20 and mounting in holes 30. The board lock 24 is shown. The flange has upper and lower surfaces 120.122 and the circuit board has upper and lower surfaces +24.126. Boardlock is the best First attached to the flange 20, the connector is placed with a board rotor and shipped to the customer. be loaded. The customer drilled a hole in the circuit board and installed the board so that the board lock went into the hole in the circuit board. Press down on the connector with the drawstring. two fingers 56.58 are the pair of slits 130 below each separation slot 76, 78 (FIG. 4), respectively. formed by As seen in Figure 10, each finger has its upper end The part 132 is located further away from the shaft 134 of the hordelock than the lower end of the swinger. It is bent in such a way that it The top edge of each finger is located at the top edge of the hole in the circuit board. , located substantially in contact with the lower surface of the flange. Do you want board lock? When pushed downward by the flange and circuit board, the hordelock Lock the position against upward pull.

Hole 32 in the circuit board or hole in the flange (at least 5% clearance) The fact that the upper end 132 of the finger presses on its hole 30 (preferably) Provide space on the bottom surface of the flange beyond.

As seen in FIG. 4, slits 66-69 are located in each bottom tapered portion 62,64 Formed on both sides. As seen in FIG. 2, the lower portion of each slit 66 The underlined region 86 located above the cut 66 is bent away from the shaft 134. forming a bottom tab 140 that This is an upward facing ramp or contact. 70.72. Referring to FIG. 11, the contact portion 72 facing the upper no. The lower surface of the circuit board 14 at the intersection 114 with the hole 32 +2 Located just below 6. After the connector that connects the board is installed, turn it on. The circuit board is wave soldered 1-1, and the lower tubular portion 42 is connected to the circuit by soldering. The gap between the walls of the hole 32 in the plate is filled. 1 trapped solder piece +50 is connected to the contact portion 72 by being located under or near it. located between the inner portions 144.

When an upward force is applied to the boardlock 24, the trapped portion 150 A pressurizing force is applied between the contact portion 72 and the board lower surface 126. Tin-lead solder for shearing It is weak against pressure, but strong against pressure. Quite a lot of soldering will cause the board lock to turn. This pressure on the solder is applied when it is pulled upwards with respect to the circuit board. It can provide substantially more resistance to pulling forces than unloaded solder. produces solder. to the inclined part or contact part 72 at a considerable angle A from the horizontal position. Preferably, the angle is about 22° and at least about 15°. That's preferable. Such an inclination is such that a portion of the contact portion 72 is approximately 0.054 to 0. ．． Located just below the bottom surface of the circuit board for boards in the 0.70 inch range We guarantee that you will.

An example is a tab 54 with a bent bottom and a 0.185 inch (4.7 mm) top. A boardlock of the shown construction is described having an overall height between . baud Drocks are designed for holes and holes in circuit boards that have a diameter of 0.109 inches (2.77 mm). and 0.089 inch (2,26 mm) diameter flange holes. It was measured. The relative shapes of some of the boardrocks are shown in the figure.

Thus, the present invention mechanically and electrically secures the connector housing to the circuit board. Circuit board surface mount connector with a low cost board lock that connects to the surface of the circuit board I will provide a. The boardlock has opposing vertical edges and a vertical midsection. Formed from top metal pieces, the boardlock is separated into tubular upper and lower parts at least one separation slot extending approximately from each vertical edge; Preferably, it extends horizontally. A tubular lower section is located below each isolation slot. and the average radius of curvature is larger than the edge area of the tubular upper part located above the slot. What to do with the edge area that is curved in. This may be due to the lower tubular section or large straight corners of the circuit board. diameter hole to allow for proper placement. The lower tubular part is like a bump. A protrusion is formed in the vertical middle part or the middle part in such a manner that the tube in the hole in the circuit board is It defines the center of the lower part of the shape. The tubular lower part is located in the hole in the large circuit board so that the upper end of the finger can contact the lower surface of the housing flange. The boardlock is bent upwards about the axis of the boardlock and the radiating points are at the bottom of the circuit board. It has a tapered lower part with a slit forming a contact located just below the surface. and provide compression resistance of the solder between them and the upward movement of the boardlock from the circuit board. Prevent the withdrawal of the

Although specific embodiments of the invention have been described herein, modifications and variations will occur to those skilled in the art. It is recognized and understood that such modifications and variations may be readily made, and that the scope of the claims does not cover such variations and It is a heki that is interpreted to cover the equivalent of .

Submission of Translation of Written Amendment (Article 184-8 of the Patent Law) May 23, 1994 to W

Claims (14)

[Claims] 1. including at least one flange that attaches to the surface of the circuit board, the flange and The board has a housing having aligned generally cylindrical holes, and the flange and extending along the vertical axis through said holes in the board and locking them In connectors that both include one board lock, the holes in said board are connected to said flange. has a larger diameter than the hole in the The board lock is received in a hole in the flange and a hole in the board, respectively. bent to form a portion that is received into the nearly tubular upper and lower holes. It is made up of a metal sheet, and the part that can be received in each hole is the corresponding hole. having a pair of generally vertical edges pressing against the wall and received by each generally tubular board the sections have vertical axes, and the boardlock is connected to the sections of the tubular upper and lower sections. a pair of separating slots located at the vertical edge, each separating slot extending partially from one of the slots substantially horizontally in a circumferential direction of the sheet; separates the tubular upper and lower portions into upper and lower edge regions, each upper edge The lower edge regions are located above one of the slots, and each lower edge region is located above one of the slots. each lower edge region of the tubular lower portion is located below the tubular upper portion; have a larger average radius of curvature than the respective corresponding upper edge regions of Characteristic connectors. 2. The boardlock has a vertical intermediate portion located approximately midway between the vertical edge regions. the vertical intermediate portion of the tubular lower portion has a protrusion, the protrusion projecting further from said axis than said vertical intermediate area surrounding it The connector according to claim 1. 3. 3. The protrusion according to claim 2, wherein the protrusion is located in the form of a bump in the vertical intermediate portion. Connector included. 4. The metal sheet is located below the tubular lower portion and is tapered and Can be inserted downward through the circuit board, each tapered section including at least two separate portions extending downwardly toward the vertical axis of said boardlock. a bottom tapered portion extending in a direction; each tapered portion having an edge and a slit extending generally horizontally to the edge; The slit has a contact portion located below it and facing generally upward. It has a bottom tab that has The tubular lower portion is located in the hole of the circuit board, and the board is connected to the upper and lower portions. a surface with each slit edge located slightly below the lower surface of the circuit board; a portion of each board surface, the board covering the wall of the hole in the board; including metal plating extending over the circuit board, and the solder connects the plating of the circuit board to the board. and the trapped portion of the solder is connected to the bottom tab of the bottom tab. located between the upwardly facing contact portion and the lower board surface; upward withdrawal of the solder is prevented by compression of the trapped portion of the solder. 2. The connector according to claim 1. 5. the upwardly facing contact portion of the tap is at least 15° above the edge; 5. The connector according to claim 4, wherein the connector extends obliquely in one direction. 6. the tubular upper portion and the front where the boardlock is located in the hole in the flange; with the tubular lower portion located in the hole of the board; a pair of said tubular lower portions along said respective separation slots forming fingers; Each finger has a substantially vertical slit, with its upper end being closer to the shaft than its lower end. bent to be located away from The upper end of each finger is located in a hole in the circuit board and substantially extends from the flange. The connector of claim 1 adjacent the lower surface. 7. Connect the flange of the connector housing having the first diameter through hole to the circuit board. form a boardlock from pieces of sheet metal, have an axis, and also have a vertical an intermediate portion and a vertical edge located on a side of said shaft substantially opposite said intermediate portion; Form a boardlock by bending a piece of sheet metal into a generally tubular shape having a Pushing the bent boardlock down through the lunge and circuit board hole In a method of mounting on a circuit board by The step of forming a hole in the circuit board has a diameter smaller than the first diameter of the hole in the flange. The step of forming a second diameter hole, which is also larger, and forming the board lock is forming at least one generally horizontal separation slot in the sheet metal; a generally tubular upper portion located in said flange hole and said circuit board hole, respectively; Separate the sheet metal into the lower part; Bend the tubular lower portion so that the lower edge region located below the separation slot a larger average curvature than the upper edge area of said boardlock located above the separation slot; bent to a radius such that each tubular portion is firmly attached to a corresponding one wall of the hole. A method for attaching a flange of a connector to a circuit board, the flange of a connector being coupled to a circuit board. 8. said step of forming said separation slot from one of said vertical edges; two separating slots each extending substantially horizontally to a distance from the vertical midsection; forming a strip, the step of bending the lower portion forming a strip of the separation strip; Each lower edge area located below one of the lots is connected to the lower edge area located between said edge areas. Claim 7, further comprising the step of bending the part with a radius of curvature larger than the middle part of the part. the method of. 9. Claim 8 comprising forming a protrusion in the intermediate portion of the tubular lower portion. Method described. 10. forming a hole in the board and including a layer of metal on the wall of the hole in the board; A pair of substantially vertical finger-forming slits are formed at the lower edge of each separation slot. to form a pair of fingers, said fingers being tilted upwardly and radially outwardly. The plated board is bent so that the upper edge of the finger extends diagonally. claim located firmly on the wall of the hole and substantially on the lower surface of said flange. The method described in item 7. 11. a top edge and a bottom edge, and opposing, generally vertically extending edges; consisting of a sheet metal piece having an intermediate portion extending to the The sheet metal piece extends from one of said generally vertical edges to said vertical intermediate portion. a pair of generally horizontal separation slots extending generally horizontally apart; Place the sheet metal pieces above and below the separation slots, respectively. Separate the parts into parts that can be received in the upper and lower holes, and The curved portion has a vertical intermediate portion bent with substantially the same first radius of curvature, and an upper edge region of the portion substantially above the separation slot having the first radius of curvature; and a lower edge region of the lower portion has an average half radius of curvature greater than the first radius of curvature. located below each of said separation slots each bent in a diameter; the boardlock has an axis substantially centered on the first radius of curvature of the upper portion; , the intermediate portion of the lower portion has a protrusion protruding away from the shaft adjacent thereto; A board lock that secures a connector with a to a circuit board or the like. 12. The sheet metal piece has a pair of fingers at the lower edge of each separation slot. a pair of nearly vertical slits forming a the part received in the hole in the upper element is located in the hole in the upper element. each finger is located in a hole larger than that of the lower element, and when 12. The boardlock of claim 11 adjacent both a wall of the board and a bottom surface of the top element. . 13. a housing with a first hole of a first diameter; a lower housing around the hole; a connector having a housing surface and a first diameter at least 5% larger than the first diameter; a circuit board having a second hole with a diameter of 2; a boardlock having an axle and projecting through both holes; The boardlock has a tubular upper portion located in the first and second holes, respectively. and a lower tubular portion, the tubular lower portion projecting upwardly and outwardly and extending substantially forwardly. at least one fin having an upper edge located on the lower surface of the connector housing; combination of a circuit board with a connector and an electrical connector. 14. from a piece of sheet metal around which said boardlock is bent approximately around said axis; formed to form said tubular upper and lower portions, each portion having nearly vertical edges. a pair of sheet metal sections having a sheet metal section extending generally horizontally from one of the edges; separation slots, the separation slots extending over the tubular upper and lower portions; separated into edge and lower edge regions, each upper edge region being positioned above one of said slots; the tubular lower portion, each lower edge region being located below one of the slots; each said lower edge region of said tubular upper portion being smaller than a respective corresponding upper edge region of said tubular upper portion. 14. The combination according to claim 13, wherein the combination has a radius of curvature that is greater than the radius of curvature.