KR830002147Y1 - Insertion Resistance Toggle Link Connector - Google Patents

Abstract

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Description

Insertion Resistance Toggle Link Connector

1 is a perspective view with a partial ablation cross section of an embodiment with a single channel in a toggle rod.

1A is a perspective view with a partially cutaway cross section of another embodiment of the connector of the present invention with two channels in a toggle rod and a running surface therebetween;

Figure 1b is a perspective view with a partially cutaway section of another embodiment of the connector of the present invention wherein the first end of the spring inserted into the groove of the toggle rod is pointed.

FIG. 2 is a sectional view along line 2-2 of FIG. 1a.

3A, 3B, and 3C are cross-sectional views of the first embodiment, showing various spring positions.

4a, 4b, 4c, 4d, 4e are cross-sectional views showing various spring positions as an embodiment of FIG. 1a.

5 is a partial cross-sectional view of the toggle rod of FIG. 1A showing the programmed spring positions.

The present invention relates to a non-resistance piece connector block, and more specifically, a non-resistance toggle type having a pair of rotary links for actuating a plurality of spring terminals along both sides of a slot formed in an electrically insulating housing. A link connector block. The spring in the first position provides strong electrical contact with the circuit board and in the second position allows the circuit board to be removed from the slot without friction.

Many attempts have been made to provide a connector block that prevents friction on the terminal strip and consequent wear caused when inserting and removing circuit boards from the connector. U.S. Patent No. 29,223 (Reissue) describes the use of inclined planes on connectors to achieve non-insertion resistance, while U.S. Patent No. 4,085,990 describes a cam follower in contact with an internal electrical contact. Connector is described. In this connector, the printed circuit board can be inserted into the connector without contacting the electrical contacts as each cam follower engages a high point on the cam surface.

U.S. Patent No. 3,793,609 obtains a low insertion force using an actuator that withdraws the contacts before insertion of the circuit board. In addition, US Pat. No. 3,744,005 uses a cam bar that is continuously engaged to each terminal to move the contact portions on the terminals to make contact with the contacts on the circuit board.

In addition, U.S. Patent Nos. 4,060,300, 4,050,758, 3,980,377, 4,118,094, 3,818,419, and 4,077,688 utilize various cam operations to provide a non-insertion resistance connector.

Recent US Pat. No. 4,119,357 uses different elastic portions on the spring terminals to achieve a non-insertion resistance.

The invention of all of the patents issued has one or more of the following limitations.

(1) insufficient contact movement on the contact surface

(2) High inertia force required to actuate connector contacts

(3) Complex structures required for the manufacture of connector blocks

(4) Inability to program ground terminals, power terminals and signal terminals to operate separately

(5) The connector block cannot be miniaturized

(6) insufficient force on the contact surface

Therefore, there is a need for a non-resistive connector that eliminates these defects, and the present invention provides a novel low insertion type connector block that does not have these prior art defects.

The connector of the present invention has two electrically insulating housings molded from conventional electrically insulating plastic materials.

The housing has a long slot sized to accommodate the edges of the circuit board, and the circuit board is guided into the housing by the guide member in the housing.

One or one toggle rod is disposed parallel to the slot of the housing, and in one embodiment the toggle rod has a single long channel for receiving the round first end of the spring or the bearing of the spring.

The first end of the spring is a bent bearing which is inserted into the channel of the toggle rod. The middle part of the spring is S-shaped and the outer surface of its upper loop contacts the electrical contact element of the circuit board. The second end of the spring is fixed in the bottom of the housing and serves as an electrical contact with another electrical device. As the toggle rod rotates, the spring moves into contact with the circuit board contacts, and when rotated in reverse, the spring contact surface deviates from the circuit board. It also acts as a toggle rod to move the spring past its neutral position, ensuring that the spring is locked in the desired open or closed position.

In FIG. 1, the housing 10 is molded from an electrically insulating plastic material such as reinforced nylon, reinforced polyester or reinforced polyphenylene sulfide. The housing 10 has a slot 11 of a suitable size to accommodate the circuit board 18. The circuit board 18 slides into the connector slot from above, ie from the open side of the connector. The circuit board has a contact strip 20 aligned with a contact spring! 2 disposed in the housing. One or more toggle rods 14 are provided parallel to the slots 11 of the housing 10. This toggle rod is made of the same reinforced nylon, polyester or polyphenylene sulfide as the housing material.

In the toggle rod of FIG. 1, a single 13 channel is formed along its entire length. In this channel a number of springs 12 are inserted. Each of the springs 12 is separated from the adjacent spring with the wall 32 in the electrically insulating housing interposed therebetween. The guide member 22 in the housing 10 accurately positions the printed circuit board 18 when the printed circuit board 18 is inserted into the housing through the slot 11.

The stop member 38 near the bottom of the housing prevents the circuit board from continuing to be inserted past a predetermined position.

The spring 12 has a curved surface that is a support surface engaging the channel of the toggle rod 14 at its upper end 40. This bearing end 40 of the spring 12 is driven in the channel 13 of the toggle rod 14 during operation. The second end of the spring exits from the housing through a hole 24 inserted into the passage 26 of the bottom of the housing 10 as a fixed end 44. The second end 44 of the spring may be a pluggable contact soldered to another circuit board or another electrical contact. The middle portion 42 of the spring is S-shaped, and the upper outer loop 50 forms a contact surface with the contact strip 20 of the circuit board 18. The spring 12 is made of brass, copper, phosphorous, copper-nickel or other conventional flexible current carrying materials.

As the toggle rod 14 rotates, the spring 12 moves in the longitudinal direction such that the upper loop 50 of the middle portion 42 contacts the contact strip 20 of the circuit board 18 (FIG. 3B). The spring then moves past the neutral position to move down on the surface of the contact strip 20 until the upper loop 50 of the spring moves slightly upwards (FIG. 3C). When the toggle rod 14 is turned upside down, the middle portion 42 of the spring 12 moves in an opposite direction and falls off the circuit board 18. After the spring has moved past its neutral position, it is fixed in its open position (Fig. 3a).

Thereafter, the circuit board 18 can be separated from the housing 10 without friction against the circuit board 18 or its contact strip 20.

FIG. 1a shows another embodiment of the present invention, which is different from the embodiment of FIG. 1 in that the toggle rod is modified. The toggle rod 14 has two channels together with the running surface 15 between the two channels 13a and 13b. When the upper loop 50 of the middle part 42 of the spring does not touch the circuit board (FIG. 4a), the upper bearing end 40 of the spring is located in the channel 13a at the beginning of rotation, thus operating this channel. It is called. When the toggle rod 14 moves in a circular motion, the middle portion of the spring 42 moves toward the circuit board to reach the circuit board (FIG. 4B) and moves downward (FIG. 4C) so that the corresponding contact on the circuit board is in contact. do. As the toggle rod further rotates, the bearing end 40 of the spring moves on the running surface 15 (FIG. 4D) and snaps into the channel 13b to lock in place (FIG. 4E). The upper loop 50 moves slightly upward when the spring is locked in its fixed position. If the toggle rod reverses in reverse order, the bearing end 40 of the spring moves back across the running surface 15 and is fixed in the channel 13a, where the middle portion 42 of the spring Falls off the substrate.

The second end 44 of the spring is fixed in the channel 26 during this operation.

The toggle rod channels of this embodiment may be programmed such that the series of springs 12 moves intermittently (figure 5) in increments of 10 ° each during rotation of the toggle rod. In this way, the ground terminal, power terminal and signal terminals can be contacted at different times as set and required by the program.

This embodiment requires a metal rod, such as a rigid steel or aluminum rod 16, to support the insulated cover of the programmed and replaceable toggle rod. However, the programmed rod does not require a separate rod since it can be preformed into the desired program shape.

FIG. 1b shows another embodiment in which only the shape of the upper first end and the toggle rod of the spring 12 differs from the above-described embodiments. In this embodiment, the toggle rod has a channel 13 into which the first end 40a of the spring 12 is inserted. When the toggle rod moves in a circular motion, the spring moves past the neutral position so that the middle portion 42 of the spring contacts the contact contact of the circuit board. Also, if the toggle rod is circularly reversed, the spring will move past the neutral position in the opposite direction and the middle portion of the spring will be separated from the circuit board.

Claims (1)

A connector for electrically contacting a printed circuit board, the connector comprising: an electrical insulated housing having a long slot for receiving the circuit board and a means for guiding the circuit board into the housing, and the slot of the housing. At least one toggle rod arranged in parallel, and a plurality of long bent spring-type metal terminals having first and second ends and an intermediate portion, the first end of each terminal being the toggle Disposed in the groove of the rod and the second end disposed in the other channels of the housing, each of the channels having at one end a hole for electrical contact between the second end of the terminal and the other electrical device, The intermediate portion of each terminal is in contact with and separated from the circuit board in the housing by the rotation of the toggle rod. No insertion resistance-type connector that.