JP2973931B2 - Pin insertion tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin insertion tool suitable for use in connecting a printed board and a card ejector, for example.

[0002]

2. Description of the Related Art Conventionally, this kind of pin insertion tool is disclosed as a "spring pin insertion tool" in Japanese Utility Model Laid-Open Publication No. 61-14076, for example, and is configured as shown in FIGS. 4 (a) and 4 (b). ing. This will be described with reference to the same drawing. In the same drawing, a spring pin insertion tool indicated by reference numeral 1 includes upper and lower two levers 2 and 3, a pilot pin 4 and a guide pin 5.

The upper and lower levers 2 and 3 are close to each other.
They move forward and backward in the direction in which they are separated, and are urged by compression springs 6 in the direction in which they are separated from each other. The movement of the upper and lower levers 2 and 3 is restricted by a stopper pin 7.

The pilot pin 4 is held by the upper lever 2 so as to be able to advance and retreat, and is urged downward by a compression spring 8. In addition, a flange 4 a for preventing the pilot pin 4 from dropping from the upper lever 2 is provided integrally with the upper end of the pilot pin 4. A spring pin 11 for connecting a printed board 9 having a pin press-in hole 9a and a card ejector 10 having a pin insertion hole 10a is inserted and held in the pilot pin 4.

The guide pin 5 has a flange 5a at the lower end.
And is disposed on the axis of the pilot pin 4 and is fixed to the lower lever 3. A spring pin 11 is fitted and held on the guide pin 5 when the printed board 9 and the card ejector 10 are connected.

In order to connect the printed board 9 and the card ejector 10 by using the pin insertion tool having the above-described configuration, the upper and lower levers 2 and 3 print the guide pins 5 at the positions shown in FIG. The spring pin 11 is inserted and held in the pilot pin 4 while being made to face the pin press-in hole 9a of the substrate 9 and the pin insertion hole 10a of the card ejector 10, and is driven by driving means (not shown) as shown in FIG. This is performed by bringing the upper and lower levers 2 and 3 closer to each other.

That is, when the upper and lower levers 2 and 3 move toward each other against the resilience of the compression spring 6, the distal end surface of the pilot pin 4 comes into contact with the distal end surface of the guide pin 5, and the upper and lower levers further move. When the pilot pins 2 and 3 move in the same direction, the pilot pin 4 retreats against the resilience of the compression spring 8, and the upper lever 2 moves the spring pin 11 on the pilot pin 4 in the direction opposite to the retraction direction of the pilot pin 4. And then transferred to the guide pin 5.

At this time, the spring pin 11 is inserted into the pin insertion hole 11a of the card ejector 11, and is pressed into the pin press-in hole 9a of the printed board 9, so that the printed board 9 and the card ejector 10 are joined. .

[0009]

By the way, in the conventional pin insertion tool, when the printed board 9 and the card ejector 10 are connected (when the pins are inserted), the printed board 9 and the card ejector 10 as the pin receiving objects are positioned. It is not equipped with a function to perform pin insertion, and therefore requires pin insertion work while holding the pin insertion object by the operator,
There has been a problem that workability and productivity in pin insertion are reduced.

Further, since the spring pin 11 is guided along the outer peripheral surface of the guide pin 5 when the pin is inserted, when the spring pin 11 having a small diameter is used as the insertion pin, the guide pin 5 having an extremely small outer diameter is used. It is necessary to prepare the guide pin 5, and there is a problem that the guide pin 5 is easily broken and the reliability in quality is reduced.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pin insertion tool capable of improving workability and productivity in pin insertion and improving reliability in quality. It is assumed that.

[0012]

In order to achieve the above object, a pin insertion tool according to a first aspect of the present invention is held on a base so as to be able to advance and retreat, and a positioning pin for positioning a pin insertion object, and a positioning pin for the positioning pin. An operating rod that is disposed on the axis of the pin and is held by the base so as to be able to advance and retreat, and has a pressing pin that can press and insert an insertion pin into and out of the pin receiving object; is held in a pin holder having a through hole for guidable insert pin holding the pressing pin, the pin holder and the positioning pin
And a spring that urges each in the direction to stop.
Move the positioning pin to the opposite side of the pin holder.
The positioning pin can be moved in the
It has a configuration with a tapper screw .

[0013] Accordingly, press-fitting, the insertion of the insertion pin for the pin to be insert, as well as positioning pins to be insert into the base by the positioning pins to hold the insert pin into the through hole of the pin holder, the moving operation of the operating rod Is performed by pressing the insertion pin in the through-hole in the direction in which the positioning pin moves backward by the movement of the pressing pin.

Here, the positioning pin is opposite to the pin holder.
The movement to the side is performed to the stopper position. At this time,
To adjust the movement of the positioning pin to the side opposite to the pin holder,
It is done by pa's advance and retreat.

According to a second aspect of the present invention, there is provided the pin insertion tool according to the first aspect, wherein an annular groove communicating with the through-hole is formed in the pin holder, and an O-ring partially faces the through-hole in the annular groove. Is attached. Therefore, the insertion pin is detachably held in the through hole by partial contact of the O-ring.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a pin insertion tool according to an embodiment of the present invention. In the figure, a pin insertion tool indicated by reference numeral 21 includes a base 22, a positioning pin 23, an operation rod 24, and a pin holder 25.

The base 22 includes two upper and lower holding portions 22a and 22b, each of which is opposed to each other at a predetermined interval in the vertical direction.
A connecting portion 22c connecting these two holding portions 22a and 22b.
And a block having a U-shape in cross section.

The upper holding portion 22a of the holding portions 22a and 22b is provided with a through hole 26 that opens vertically and a pin mounting hole 27 that communicates with the through hole 26 and penetrates horizontally. In this pin mounting hole 27, a stopper pin 28 extending in a direction perpendicular to the opening direction of the through hole 26 is mounted.

Meanwhile, below the holding portion 22b, the through-holes 2
6 is provided with a through-hole 29 that opens in the same axial direction. In this through hole 29, a bush 30 having a flange 30a exposed to the outside is mounted.

The bush 30 has a screw hole 3 opening downward.
0b is provided in the screw hole 30b, and a stopper screw 31 that can advance and retreat in the axial direction of the through holes 26 and 29 is provided in the screw hole 30b.
Is screwed. Thereby, the movement of the positioning pin 23 to the side opposite to the pin holder 25 is restricted. The bush 30 is provided with a pin insertion hole 30c that opens in the same axial direction as the screw hole 30b and penetrates the flange 30a.

The positioning pin 23 is inserted into the pin insertion hole 30c and is held by the bush 30 so as to be able to advance and retreat. The printed board 32 having the pin press-in hole 32a and the pin insertion hole 3
The card ejector 33 with 3a is positioned at the time of connection. The lower end of the positioning pin 23 has a screw hole 3
A flange 23a which faces the inside of Ob and serves as a spring receiver is integrally provided. The positioning pin 23 is urged upward (pin holder side) by a compression spring 34.

The compression spring 34 is housed in the screw hole 30b and is elastically mounted between the stopper screw 31 and the flange 23a. The operating rod 24 includes a positioning pin 23
And the base 22 (the upper holding portion 22)
It is held in the through-hole 26 of FIG. An upper end of the operation rod 24 is integrally provided with a flange 24a serving as a spring, and a lower end is provided with a concave portion 24b opening downward and a screw hole 24c communicating with the concave portion 24b. I have. The outer peripheral surface of the operation rod 24 is provided with a concave groove 24 d extending in the rod axis direction and facing the tip of the stopper pin 28. Further, a pin mounting hole 24e communicating with the concave portion 24b and penetrating in a direction parallel to the pin mounting hole 27 is provided. A stopper pin 35 extending in a direction perpendicular to the axial direction of the concave portion 24b is mounted in the pin mounting hole 24e.

The operating rod 24 is urged upward by a compression spring 37. The compression spring 37 is elastically mounted on the end surface of the flange 24 a and the opening edge of the through hole 26. A pressing pin 38 which press-fits the spring pin 36 into the pin press-fitting hole 32 a of the printed circuit board 32 and inserts the spring pin 36 into the pin insertion hole 33 a of the card ejector 33 is screwed into the screw hole 24 c of the operation rod 24. ing.

The pressing pin 38 is disposed on the axis of the positioning pin 23 and is inserted through the recess 24b. The pressing pin 38 is integrally provided with a flange 38a which faces the recess 24b and serves as a spring receiver.

When the spring pin 36 is pressed into the pin press-in hole 32a by the pressing pin 38 and is inserted into the pin insertion hole 33a, the printed board 32 and the card ejector 33 are connected.

The pin holder 25 is held so as to be able to move forward and backward with a part of the pin holder 25 facing the recess 24b.
The pin holder 25 has a through hole 25a for holding a spring pin which can guide the pressing pin 38 in the axial direction of the positioning pin 25 and an annular groove 2 communicating with the through hole 25a.
5b is provided. The outer peripheral surface of the pin holder 25 is provided with a concave groove 25c extending in the axial direction of the through hole 25a and facing the stopper pin 35.

An O-ring 39 is mounted in the annular groove 25b of the pin holder 25, a part of which faces the inside of the through hole 25a. Due to the partial contact of the O-ring 39, the spring pin 36 is detachably held in the through hole 25a. That is, the spring pin 36 is held in the through hole 25 a of the pin holder 25 by the frictional force of the O-ring 39, and is separated from the pin holder 25 by the pressing force of the pressing pin 38.

The pin holder 25 is urged downward (positioning pin side) by a compression spring 40.

The compression spring 40 is disposed around the pressing pin 38 and is elastically mounted between the flange 38a and the pin holder 25.

The connection between the printed circuit board 32 and the card ejector 33 using the pin insertion tool having the above-described structure is performed as follows. First, FIG.
The spring pin 36 is held in the through hole 25a of the pin holder 25 by the O-ring 39 as shown by a solid line in FIG.

[0031] Next, FIG. (B) pins press-fit positioning pins 23 as shown by the solid line in the hole 32a and the pin insertion hole 3
The printed board 32 and the card ejector 33 are positioned with respect to the base 22 facing 3a.

[0032] Then, by moving operating the operating rod 24 as shown in FIG. (C) and (d) downward, the press-fitting the spring pin 36 in the through hole 25a in the pin press-fitting hole 32a, It is inserted into the pin insertion hole 33a.

[0033] That is, the spring pin 36 through hole 2
5a, the printed board 32 and the card ejector 33 are positioned by the positioning pins 23, and then the operating rod 24 is moved downward against the resilience of the compression spring 37 to move the operating rod 24. With the operation, the pressing pin 38 and the pin holder 25 move in the same direction. When the pin holder 25 comes into contact with the card ejector 33 on the bush 30 by the downward movement of the operation rod 24, the pin holder 25 moves upward against the resilience of the compression spring 40, and is pressed by the movement of the pin holder 25. The pin 38 presses the spring pin 36 in the direction of press-fitting the pin press-fit hole 32a (the direction of inserting the spring pin 36 into the pin insertion hole 33a).

At this time, the positioning pin 23 in the pin insertion hole 33a (the pin press-in hole 32a) is pressed against the resilience of the compression spring 34 so that the pin insertion hole 33a (the pin press-in hole 32a).
To move down and out of contact with the stopper screw 31,
The spring pin 36 in the through-hole 25a is pushed out of the through-hole 25a, is inserted into the pin insertion hole 33a, and is pressed into the pin press-in hole 32a.
And the card ejector 33 are connected.

In this embodiment, a printed board 32 having a pin insertion hole 32a as a pin insertion object and a card ejector 33 having a pin insertion hole 33a are used, and a spring pin 36 is used as an insertion pin.
Although the present invention is not limited to this, the present invention is not limited to this, and as shown in FIGS. 3A and 3B, it is constituted by a plate 51 having a pin press-in hole 51a as a pin insertion object and inserted. Even if it is constituted by the support 52 having the screw hole 52a as a pin, there is no problem at all.

In this case, the support 5 from the plate 51
The height position setting of the stopper screw 31 is performed in place of the usual technique in which a stepped support 62 having a screw hole 62a is screwed to a plate 61 as shown in FIG.
Can be adjusted by adjusting the height position.

[0037]

According to the present invention, as described above,
Pressing and inserting the insertion pin into the insertion
The pin insert is positioned on the base by the
Hold the insertion pin in the through hole of the pin holder, and
The insertion of the push pin by the
Pressing the input pin in the direction in which the positioning pin retracts
It is done by. Therefore, pin insertion as before
Since it is not necessary to insert the pin while holding the object,
Increased workability and productivity in pin insertion
Wear.

Further, since the insertion pin can be guided along the inner peripheral surface of the through hole in the pin holder when the pin is inserted, breakage of the components can be prevented even when a small diameter insertion pin is used. Also, the reliability in quality can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a pin insertion tool according to an embodiment of the present invention.

FIGS. 2A to 2D are cross-sectional views for explaining pin insertion using a pin insertion tool according to an embodiment of the present invention.

FIGS. 3A and 3B are a perspective view and a sectional view showing an example of attaching a post to a plate by a pin insertion tool according to an embodiment of the present invention, and FIG. It is sectional drawing which shows an example.

4A and 4B are cross-sectional views showing a conventional pin insertion tool.

[Explanation of symbols]

 21 Pin Insertion Tool 22 Base 23 Positioning Pin 24 Operating Rod 25 Pin Holder 25a Through Hole 32 Printed Circuit Board 32a Pin Press-In Hole 33 Card Ejector 33a Pin Insertion Hole 34 Compression Spring 36 Spring Pin 38 Pressing Pin 40 Compression Spring

Claims (2)

(57) [Claims] 1. A positioning pin which is held on a base so as to be able to move forward and backward and positions a pin insertion object, and which is disposed on the axis of the positioning pin and is held by the base so as to be able to advance and retreat, and An operation rod having a pressing pin capable of press-fitting and inserting an insertion pin into an object, and a pin holder having a through hole for holding the insertion pin which is held by the operation rod so as to be able to move forward and backward and which can guide the pressing pin.
When, the pin holder and the positioning pins, stops, respectively
A spring for urging in a direction to stop the movement in the opposite side of the pin holder of the positioning pins
The position of the positioning pin that can be moved in the
A pin insertion tool comprising a topper screw . 2. The pin holder communicates with the through hole.
An O-ring forming an annular groove, a part of which in the annular groove faces the through hole;
2. The pin insertion device according to claim 1, wherein a pin is inserted.
Utensils.