JP2000077158A - Connector extracting tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an extracting tool to remove a connector with few terminals to be mounted to a substrate from the substrate. SOLUTION: This connector extracting tool is composed of a body 11, in which a knob 14 to be applied with a pressing force is provided and a columnar space part 17 having an opening part 15 with a small diameter is formed on another end part, a columnar holder 28, which has a collar part 30 sliding in the columnar space part of the body on one end and is provided with one or plural fine holding holes 29 between the one end and another end, an ejector pin 23 so provided that its one end is fixed inside the center part of the body 11, and its another end passes through the space part 17 of the body and the holding holes of the holder 28, and partially protrudes from the tip of the holder when the collar part 30 of the holder is positioned on the opening part 15 side of the body, and a coil spring 32, which is integrated in the space part 17 of the body, and is provided so as to press the collar part of the holder onto the opening part 15 side of the body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector removing tool for removing a small connector having a small number of terminals mounted on a board, such as about 1 to 4 terminals, from the board.

[0002]

2. Description of the Related Art Recently, a connector having a structure in which a small connector with a cable having a small number of terminals is directly pressed into a wiring hole of a printed circuit board (substrate) has been developed and commercialized. FIG. 5 shows an example of this small connector. FIG. 5A is a perspective view when the small connector is inserted into the board, and FIG. 5B is a longitudinal sectional view in a state where the terminals of the small connector are inserted into the board. This small connector has, for example, two terminals that are press-fitted into a through hole with an inner diameter of 0.8φ provided at a pitch of 2.54 mm on a printed circuit board. That is, in FIG.
Is a terminal of the connector 1 and is provided with a press-fit portion 3 for mounting and fixing the wiring hole 5 of the substrate 4. Reference numeral 6 denotes a cable connected to the terminal 2 of the connector 1. And substrate 4
In the state where the terminal 2 is press-fitted, the tip 7 of the terminal 2 may be in a state of being pulled in from the back surface 8 of the substrate 4 or protruding depending on the thickness of the substrate, as shown in FIG. The object is shown in a retracted state.

[0003]

When the connector 1 mounted on the board 4 is to be removed or replaced as described above, the cable 6 must be pulled out without stopping without pulling. In this case, a pulling force is applied to the cable 6, causing a problem that the cable 6 is disconnected. The present invention provides a connector removal tool that easily removes the connector 1 from the substrate 4 by pressing the tip of the terminal 2 from the back surface of the substrate 4 even when a small connector with a small number of terminals is mounted with high density. Is what you do.

[0004]

A connector removal tool according to the present invention is provided with a knob to which a pressing force is applied at one end and a column-shaped space for a component slide having a small-diameter opening at the other end. And a columnar holder having at one end a flange that slides in a columnar space of the body, and one or more small-diameter through holes provided between the one end and the other end. When one end is fixed substantially inside the center of the body, the other end passes through the space of the body and the through hole of the holder, and the flange of the holder is positioned on the opening side of the body, the holder is An ejector pin provided so as to partially protrude from the other end thereof, and an ejector pin provided in a space of the body, and provided so as to press a flange of the holder toward an opening of the body. Coil spring Those which are al configured.

[0005]

FIG. 1 is a top view of an embodiment of a connector removal tool according to the present invention, and FIG. 2 is a side longitudinal sectional view thereof, in which a relevant portion is inserted into a wiring hole 5 of a substrate 4. It shows the state. FIG. 3 is a perspective view of the connector removing tool of the present invention shown in FIGS. 1, 2 and 3, reference numeral 11 denotes a body, a first cylindrical body 12,
It is formed by a three-body structure of the second cylindrical body 13 and the knob 14. The first cylindrical body 12 has a small-diameter opening 15 at the front end, and a large-diameter opening 16 into which the front end of the second cylindrical body 13 is fitted at the rear end. When 13 is fitted, a columnar space portion 17 is formed in the middle portion. As described above, the second cylindrical body 13 has a front end formed with a small diameter that fits the rear end of the first cylindrical body 12, and a rear end formed with the male screw part 1 formed on the knob 14.
A female thread 19 that is screwed to the thread 8 is formed, and a partition 20 having a small-diameter insertion hole 21 provided therein is provided.

The knob 14 is provided with a pedestal portion 22 at the rear end thereof so as to be easily pressed, and the male screw portion 18 at the front end thereof is screwed to the female screw portion 19 of the second cylindrical body 13 as described above. . Reference numeral 23 denotes a linearly formed ejector pin. In this embodiment, two ejector pins are provided. Each of the ejector pins 23 is formed of a steel material having an outer diameter slightly smaller than the inner diameter of the wiring hole 5 of the substrate 4, for example, a 0.7φ line, such as stainless steel, and is formed wide at the rear end. The fixing portion 24 and the striated portion 25 are provided. The fixing portion 24 is provided with the partition portion 20 of the second cylindrical body 13.
It is fixed between the rear portion and the front end portion 26 of the knob 14, and is pressed and fixed via a collar 27 provided therebetween.

The linear portion 25 of the ejector pin 23
The first cylindrical body 12 is inserted through the small-diameter insertion hole 21 of the partition 20.
Is provided so as to protrude from the opening portion 15 through the space portion 17. 28 is the linear portion 2 of the ejector pin 23
5 is a holder having a small-diameter holding hole 29 for holding the flange 5, and a flange 30 slidable in the space 17 of the first cylindrical body 12 is provided at the rear end. 32 is the first cylindrical body 12
The holder 28 is provided to press the holder 28 toward the opening 15 of the first cylindrical body 12 in a normal state. In this normal state, the tip of the ejector pin 23 is slightly, for example, 1 to 2 mm.
It is provided to protrude from the tip of the degree holder 28. The first cylindrical body 12 and the second cylindrical body 13 are
It is fixed by six hexagon socket set screws 33.

Next, the operation and operation of the connector removal tool will be described. First, the tip of the ejector pin 23 projecting from the tip of the holder 28 is inserted into the wiring hole 5 into which the terminal 2 of the connector 1 to be removed from the back surface 8 of the board 4 is inserted, and the knob 14 of the body 1 is attached to the board. Press in four directions. This press causes the ejector pin 2
The distal end 34 of the connector 3 presses the distal end of the terminal 2 of the connector 1 (not shown) inserted into the wiring hole 5 and pushes the terminal 2 toward the surface 8 of the substrate 4. At this time, the tip portion 31 of the holder 28 is pressed against the surface 8 of the substrate 4, and the flange portion 30 corresponds to the degree of insertion of the ejector pin 23 into the wiring hole 5.
The holder 28 slides inside the space 17 and retreats inside the space 17 while compressing the coil spring 32. This state is as shown in FIG.

When the knob 14 is further depressed and the ejector pins 23 are inserted about the thickness of the substrate 4, the terminals 2 come out of the wiring holes 5 and the connector 1 is pulled out. During the removal operation, the ejector pin 23 is always held by the holder 27, so that the ejector pin 23
Since no bending pressure is applied in the horizontal direction, the wire is vertically inserted into the wiring hole 5 and a smooth removal operation can be performed. After removing the connector 1 from the substrate 4 and removing the ejector pin 23 from the wiring hole 5, the coil spring 32
The flange 28 of the holder 28 is pressed by the action of
The first cylindrical body 12 returns to the tip opening 15 side.

It is preferable that the removal tool be set so that the dimension of the ejector pin 23 projecting from the tip of the holder 28 at the time of maximum pressing is substantially equal to the thickness of the substrate 4. Further, in this embodiment, a removal tool for a connector having two terminals, that is, a tool using two ejector pins 23 and a holder 28 corresponding to the ejector pin 23 is shown. For removal of the connector to a certain extent, a removal tool having a similar structure in which the ejector pin 23 and the holder 28 are replaced can be used.

[0011]

As described above in detail, the connector removing tool according to the present invention is a small connector having a small number of terminals, which is mounted by press-fitting the terminals into the wiring holes of the printed circuit board.
It is a removal tool suitable for removing from a printed circuit board.Especially, when small connectors are closely spaced, a large number of connectors are arranged per unit area, the density is high, and it is difficult to remove with a finger of an operator. It is a connector removal tool that can be removed stably, and is extremely effective for removing a small connector with a small number of terminals from a board.

[Brief description of the drawings]

FIG. 1 is a top view showing an embodiment of a connector removal tool according to the present invention.

FIG. 2 is a side longitudinal sectional view showing one embodiment of the connector removal tool of the present invention.

FIG. 3 is a perspective view of an embodiment of the connector removal tool according to the present invention.

FIG. 4 is a longitudinal sectional view showing an operation state of an embodiment of the connector removal tool of the present invention.

FIG. 5 is a perspective view and a partial cross-sectional side view showing a relationship between a printed circuit board to be extracted by a connector extraction tool of the present invention and a small connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector 2 Terminal 3 Terminal press-fitting part 4 Printed circuit board 5 Wiring hole 6 Cable 7 Terminal tip 8 Backside of board 11 Body 12 First cylindrical body 13 Second cylindrical body 14 Knob 15 Opening of tip part of first cylindrical body 16 Opening at the rear end of the first cylindrical body 17 Column-shaped space of the first cylindrical body 18 Male screw part of the knob 19 Female screw part of the second cylindrical body 20 Partition part 21 Insertion hole of the partition part 22 Base part of the knob 23 Ejector pin 24 Ejector pin linear portion 25 Ejector pin fixing portion 26 Knob tip 27 Collar 28 Holder 29 Holder holding hole 30 Holder flange 31 Holder tip 32 Coil spring 33 Hexagon socket screw 34 Ejector pin Tip of

Claims (2)

[Claims] 1. A body in which a knob to which a pressing force is applied is provided at one end, and a column-shaped space for a component slide having a small-diameter opening is formed at the other end, and a column-shaped space of the body is formed at one end. A pillar-shaped holder having a flange that slides in the space, and having one or more small-diameter holding holes provided between the one end and the other end; one end fixed to substantially the center of the body; The other end is provided so as to partially project from the tip of the holder when the other end passes through the space of the body and the holding hole of the holder and the flange of the holder is located on the opening side of the body. A connector removal tool comprising: an ejector pin; and a coil spring which is housed in a space of the body and is provided so as to press a flange of the holder toward an opening of the body. 2. The body comprises a first cylindrical portion, a second cylindrical portion, and a knob, and the column-shaped space portion is provided between a rear end of the first cylindrical portion and a front end of the second cylindrical portion. The connector removal tool according to claim 1, wherein a fixing portion of the ejector pin is fixed between a partition provided inside the second cylindrical portion and a front end of the knob.