JPS61116782A - Back board connector - 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 TECHNICAL FIELD This invention relates to a connector for coupling a companion printed circuit board (PCE) to a backplate.

The prior art back plate is a printed circuit board or metal plate that is vertically removably mounted on the top so that the attached PCB can be easily removed. One method of electrically coupling an attachment board to another attachment board, a back plate, and other circuits is to connect a first connector element attached to a back plate and a sixth connector element attached to an attachment board.
There is a two-piece multi-contact connector consisting of a second coupling connector element that fits between the side walls extending above the connector element. When the two elements are coupled, a plurality of rows of upwardly oriented contact struts between the sidewalls of the first element couple to a plurality of corresponding downwardly oriented fork-shaped contacts of the second element.

SUMMARY OF THE INVENTION The present inventor has provided a back plate-attached board connector with an additional contact piece attached to one side wall of the two connector elements and another contact piece attached to the opposing outer wall of the other connector element. It has been found that by providing this, additional connections for grounding, power supply, etc. current distribution can be appropriately achieved without increasing the overall thickness of the connector.

In a preferred embodiment, the back plate is provided with a groove in the side wall of the same carp-lid element and a plurality of elastic contact pieces extending from the groove. The contact piece has a laterally extending projection at the movable upper end of the sump which prevents it from penetrating too far into the area between the side walls, thereby preventing jamming. A recess in the side wall near the upper end of the groove is further provided to receive the movable end of the contact piece when it is flexed. One contact piece of the carp-lid element facing the back plate has a plurality of contact pieces arranged in the groove.

The contact piece of the other connector element is sufficiently canine to contact the contact piece portions of the single contact piece of the first connector element.

DESCRIPTION OF PREFERRED EMBODIMENTS The structure and operation of a preferred embodiment of the present invention will be described.

(Structure) Referring to FIG. 1, a two-piece connector 10 is shown for electrically coupling an attached printed circuit board 12 (schematically shown without electronic circuit elements) to a back plate 14. Connector 10 includes a lower back plate connector element 16 coupled to back plate 14 and an upper attached board connector element 20 coupled to attached board 12.
a plurality of corresponding fork-shaped signal contacts 22 mounted within the
Four rows of signal contact pins 18 are attached to the back plate 14 and pass upward through the back plate connector element 16 (
Figure 2].

Referring to FIGS. 2.3 and 5, the signal contact 22u! of the attached board connector element 20! Plastic nozzle 2
It becomes fork-shaped at the lower end 26 of the box frame 28 of 4,
It extends upward and is bent horizontally. The other end of the contact piece 22 passes through a hole in the plastic guide plate 30 and the attachment board 12, where it is soldered (FIG. 5). Guide plate 3
Aluminum reinforcing material 3 between 0 and 7/Using 24
2 is attached to cover the exposed portion of the contact piece 22 and form a structure for the attached board connector element 20. housing 2
A grounding contact piece 36 is provided on the outer surface of the side wall 34 of 2.
3, which is separate from housing 24 and is shown in more detail in FIG. The contact piece 36 is attached to the wall 34 of the housing 24 by a vertical protruding piece 37 attached when the housing 24 was molded and a horizontal protruding piece 39 bent upward after molding. The lower end of the contact piece 36 is inclined to form a guide surface 40. A laterally extending branch 38 of the contact piece 36 passes through a hole in the attachment board 12 and is soldered therein. It is made of phosphor bronze with 100 microinches of nickel overlaid with inch sheet metal.

Referring to Figures 2.4 and 5, back plate connector element 1
6 signal contact pins 18 are press-fitted into the back plate 14,
It can be seen that the back plate connector element 16 has a side wall abutment 42 disposed within a groove 44 in a right side wall 46 extending upwardly from the substrate 47. Each contact piece 42 is connected to the connecting portion 53 through the hole 5.
1 and extending to the groove 44.

Near the top of the substrate 47, the contact piece 50 bends from the contact area or gap 54 between the side walls 46, 56 to the fulcrum 52. From here it bends back into the contact area 54 and the contact point 48
and begins to bend back away from the contact area 54. A protruding piece 58 is provided at the upper movable end of each contact piece 50,
It extends laterally behind the overhang 60 of the side wall 46 . The recess 45 further extends into the side wall at the upper part of the groove 44. The contact piece 52 is made of copper alloy (C72500) and coated with 100 microinches of gold.
It has a weld fill in microinch nickel contact area 48 (FIG. 4).

In operation, the backplate connector element 16 is connected to the backplate by inserting the lower press-fit portion of the contact pin 18 and the contact piece 42 through the hole in the backplate 14. The attached board connector element 20 includes a guide, a screw 64 passing through the plate 30 and the reinforcement 32, an end 23 of the contact piece 22 and a branch piece 38 of the contact piece 36.
The auxiliary board 12 is connected to the auxiliary board 12 by a solder portion passing through the hole 62 of the auxiliary board 12. The armature 18.22 is used for signal transfer and the armature 36.42 is used for grounding.

Before inserting the attached board connector element 20 into the contact area 54, the protruding piece 58 is brought into contact with the protruding part 60 by a predetermined force, and the contact point 48 is accurately set so as to be in an area where jamming may occur during insertion. This prevents it from entering the contact area 54.

When the attached board connector element 20 is inserted into the contact area 54FF3, the contact pins 18 are received between the fork-like branches 26. The upper end of the contact piece 42 is bent slightly in the opposite direction by the inclined surface 39 and received in the recess 45, and the contact piece 36 contacts the contact point 48 of the contact piece 42 as shown in FIG. The recess 45 is curved only at its lower end to prevent the necessary excessive pushing force, as would be required if the contact part 50 were supported at two ends.

In addition to providing a ground connection without taking up excess receiving capacity of the connector 10, the attachment board 12 is placed in close proximity to the row of signal contacts 22 to provide a single-circuit ground path that allows for even faster switching. Advantageously, a grounding branch 38 can be provided.

Other Embodiments Various embodiments of ponds are contemplated within the scope of the present invention.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a connector for coupling an attached printed circuit board to a back plate according to the present invention. FIG. 2 is a vertical cross-sectional view of the connector of FIG. 1 taken along line 2--2. FIG. 3 is a schematic cut-away perspective view showing a contact piece of the attached board connector element of the connector of FIG. 1 and a portion of the attached board connector element to which the contact piece is attached. FIG. 4 is a cut away perspective view showing the contact piece of the back plate connector element of the connector of FIG. 1 prior to placement in the groove in the side wall of the back plate connector element of the connector of FIG. 1; FIG. 5 is a vertical cross-sectional view taken directly at 5--5 in FIG. 1 showing the connection of the contact piece of FIG. 1 in use. 10 - Connector 36. 42 - Contact piece 12 - Attached circuit board 44 - Groove 14 - Back plate 48 - Contact point 16 - Back plate connector element 51 - Hole 20 - Attached board connector element 18. 20 - Contact piece 6 - Overhang 24 - Housing (5 people outside)

Claims (1)

[Scope of Claims] 1. A substrate of insulating material and a pair of insulating material extending upwardly from the substrate and forming contact areas between mutually spaced inwardly facing surfaces thereof. a first connector element including a first sidewall and a plurality of first contact pieces extending upwardly from the substrate in the contact region; a housing of an insulating material having a second sidewall that is aligned with the first contactpiece to join the first contactpiece when the housing is inserted between the first sidewalls; a second connector element including a plurality of downwardly facing second contact pieces, one of the first side walls having a third contact piece portion facing in a circular direction; one of the second side walls has an outwardly directed fourth contact portion for contacting the third contact portion; A connector for connecting an attached printed circuit board to a rear board, characterized in that 2. The first side wall to which the at least one third contact piece is attached has a groove and an opening to the groove on the inner surface, and a plurality of third contact pieces are arranged in the groove and contact the contact area. 2. The connector according to claim 1, wherein there are three contact pieces, and the third contact piece is elastic. 3. The contact piece extends into the contact area, the side wall has a protrusion proximate to the opening in the inwardly facing surface, and the width of the opening is a groove behind the protrusion. The third contact piece is bent away from the contact area to prevent the third contact piece from penetrating too far into the contact area, thereby preventing jamming. 3. A connector as claimed in claim 2, having a movable end having a laterally extending protrusion that interacts with the connector. 4. The connector according to claim 3, wherein a recess for receiving the movable end when the contact piece is deviated into the recess groove extends further into the side wall from the recess. . 5. The connector according to claim 2, wherein the groove communicates with a hole passing through the substrate, and the third contact piece passes through the hole. 6. Claim 5, wherein each of the third contact pieces has a plurality of third contact pieces that pass through the hole and are joined together under the hole by a connecting portion. Connector listed. 7. The contact piece portion extends into the contact area between the circularly facing surfaces, and the side wall has an overhang proximate to the opening in the inwardly facing surface so that the width of the opening is The third contact piece is bent away from the contact area so that the third contact piece is bent away from the contact area to prevent jamming from occurring. Claim 6 having a movable end having a laterally extending protrusion that interacts with said overhang to prevent
Connectors listed in. 8. Each of the contact pieces has a fulcrum above the corresponding hole, and the contact pieces are bent away from the contact area between the side walls and toward the contact area at the fulcrum. The connector according to claim 6, wherein the connector is bent in the opposite direction. 9. The connector according to claim 1, wherein the fourth contact piece includes a plurality of connecting portions that penetrate through holes in the attached board. 10. The connector according to claim 9, wherein the fourth contact piece has a protruding piece for attaching it to the surface of the second connector element. 11. The connector according to claim 2, wherein the fourth contact piece contacts the plurality of third contact pieces. 12. A lower portion where the fourth contact piece is brought into contact with the plurality of third contact piece parts, and is inclined such that the third contact piece parts are deviated away from the area during insertion. The connector according to claim 7, wherein the connector has: 13. The connector of claim 1, wherein an attached circuit board is coupled to one of the connector elements and a back plate is coupled to the other connector element.