JPS6018868Y2 - Printed circuit board pulling device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement in a printed circuit board extraction device.

As shown in FIG. 1, in the conventional device of this type, a U-shaped handle 2 is fixed to the end of each of a plurality of printed circuit boards 1 on the opposite side from the connector connecting portion 1a, for example, by screwing, and is attached to a housing or the like. The substrate holder 5, which rotates around the fulcrum shaft 4 of the support 3 to be attached, is erected and brought into contact with the handle 2,
The printed circuit board 1 is held by pressing the printed circuit board 1 in the board insertion direction with an elastic body 6 such as rubber.

When the printed circuit board 1 is to be pulled out, the circuit board holder 5 is rotated in the direction of arrow A in FIG. As shown in the figure, the printed circuit boards 1 are individually pulled out by manually grasping the handle 2 and pulling the printed circuit boards 1 in the direction B in the figure.

However, in the conventional device as described above, the handle 2 needs to protrude a predetermined distance from the printed circuit board 1 due to the requirement for manual operation, and this protruding distance takes up extra space for the casing, etc., resulting in high This poses a major obstacle to high-density packaging, making it difficult to apply to small electronic devices.

Further, in order to achieve miniaturization, the protruding distance of the handle may be reduced, but this makes it difficult to grasp when pulling out, which is undesirable as it reduces operability.

This invention was made in view of the above circumstances, and
The object is to provide a printed circuit board pulling device which can hold a printed circuit board, minimizes the board holding space, and provides good operability when pulling out the printed circuit board.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

In these figures, the same parts as those in FIG. 1 are designated by the same reference numerals, and the explanation thereof will be omitted.

In this device, a plurality of printed circuit boards 1 connected to a connector (not shown) can be individually pulled out, and a board holding plate can be moved around a fulcrum shaft 4 of a support 3 attached to a housing etc. 5 is rotated to stand up and contributes to holding a plurality of printed circuit boards 1, which is the same as in FIG.

The difference between FIGS. 2 and 3 from FIG. 1 lies in the relationship between the handle portion provided at the end of the printed circuit board 1 opposite to the connector connection portion 1a.

This point will be discussed in detail below.

First, a plurality of holes 11 are bored a predetermined distance inside the end of the printed circuit board 1 in parallel to the end surface of the board.

On the other hand, the screw 1 is passed through the hole 11 from the back side of the printed circuit board 1.
There is an engaging body 13 fixed by 2, which has a hexagonal shape, for example, and has both end faces formed into circular recesses 14, as shown in cross section in FIG. A cutout 15 is formed so as to communicate with the substrate surface.

Reference numeral 17 denotes a handle to be engaged with the engaging body 13, which is formed by bending both ends of a U-shaped plate at right angles to form a base portion 18, and by bending the middle body portion to form a U-shape. Grip part 1 shaped like
9.

Furthermore, a retaining protrusion 20 that engages with the depressed portion 14 of the engaging body 13 is protruded from the opposing side wall portion located between the base portion 18 and the grip portion 19 .

Next, in particular, the assembly of the handle 17 and the operation of the printed circuit board pulling device as described above will be described.

First, in assembling the handle 17, the engaging protrusion 20 of the handle 17 is inserted from the lower side of the engaging body 13 into the recessed part 14 through the cutout part 15.

Further, after the engaging body 13 is positioned over the hole 11 of the printed circuit board 1, the screw 12 is inserted into the hole 11 from the back side of the printed circuit board 1 and screwed into the engaging body 13, thereby fixing the engaging body 13.

Next, the operation of this device will be described.

First, the printed circuit boards 11 are sequentially inserted and connected to a plurality of connectors (not shown).

After that, the fulcrum shaft 4 of the U-shaped support 3 is attached to the housing etc.
The substrate holder 5, which rotates around , is brought into contact with the grip part 19 of the handle 17, which has already been set in the upright state, via the elastic body 6, while being rotated to stand up.

Therefore, when the board holder 5 is pressed in the board insertion direction in this state, the base parts 1 and 8 bent at right angles to the grip part 19 are brought into close contact parallel to the surface of the printed circuit board 1, and the engaging protrusions 20 is only slightly narrower than the diameter of the concave portion 14, so when the grip portion 19 is perpendicular to the printed circuit board 1, the engaging protrusion 20 is in contact with the wall of the concave portion 14. will be stopped.

Therefore, the printed circuit board 1 can be held by the board holder 5 without taking up much extra space by the grips 17.

Note that the upper end portion of the substrate holder 6 is locked with a suitable member.

Next, when pulling out the printed circuit board 1, first, the circuit board holder 5 is rotated in the direction of arrow A and separated from the handle 17.

Then, the handle 17 falls down naturally and becomes ready for pulling out operation.

In this case, if the handle 17 does not fall down naturally, it may be turned down artificially.

Then, the gripping portion 1a of the handle 17, which is parallel to the printed circuit board 1, is manually grasped as shown in FIG. Let's do it.

Note that the present invention is not limited to the above embodiments.

For example, as shown in FIG.
0', an engagement hole 14' that engages with the engagement protrusion 20' is provided on the handle 17 side, and when the handle 17 is raised, the printed circuit board 1
It may be provided with a base portion 18' that comes into close contact with the base portion 18'.

Further, a configuration in which the substrate holder 5 can be attached and detached from the fulcrum shaft 4 can be realized relatively easily, and the shape of the engaging body 13 may be arbitrary, and may even be a complete cylindrical body.

In addition, the present invention can be modified in various ways without departing from its gist.

As detailed above, according to the present invention, the handle is provided with a grip that stands up when holding the printed circuit board and is perpendicular to the printed circuit board, so the handle can hold the printed circuit board without taking up extra space. .

For example, when comparing FIG. 1 (conventional) and FIG. 2 (present invention), it is found that in the conventional case, the handle is fixed, so the amount of protrusion from the end of the printed circuit board is large, Ll, but in the present invention In this case, since the grip portion of the handle stands up on the holding portion, the amount of protrusion from the printed circuit board is L2, which can be made very small.

As a result, high-density packaging can be achieved, making it fully applicable to small electronic devices.

In addition, when the board is pulled out, the handle either falls down naturally or with a simple operation, and as a result it protrudes largely from the edge of the board, the gripping part of the handle protrudes enough to grip the board, and as a result, the handle can be pulled out. Easy to operate.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a conventional device, and Figs. 2 to 4 show an embodiment of the printed circuit board pulling device according to the present invention. Cutaway perspective view, 3rd
4 is a sectional view of the engaging body shown in FIG. 2, and FIG. 5 is a partially cutaway exploded perspective view showing another example of the engaging body and handle. , FIG. 6 is a perspective view showing the device shown in FIG. 1 when it is pulled out, and FIG. 7 is a perspective view showing the device shown in FIG. 2 when it is pulled out. 1...Printed board, 3...Support, 4.
...Fully shaft, 5...Substrate holder, 6...
...Elastic body, 13...Engagement body, 14...
...Defected part, 15... Defected part, 17...
...Handle, 18...Base, 19...
Gripping portion, 20...Engaging protrusion.

Claims (1)

[Scope of utility model registration request] In a printed circuit board extraction device that also serves to hold a printed circuit board connected to a connector, an engaging body is attached to an end of the printed circuit board opposite to the connector connection part, and when the printed circuit board is engaged with the engaging body and is raised, the printed circuit board is pulled out. a handle that is substantially perpendicular to the printed circuit board and is parallel to the printed circuit board when the printed circuit board is pulled out; A printed circuit board extraction device comprising: a circuit board holder that is rotated and separated from the handle when the circuit board is pulled out.