JP3229997B2 - Package insertion / extraction mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for inserting and removing an electronic circuit package or the like mounted in a plug-in type on an information processing terminal or the like.

[0002]

2. Description of the Related Art A key point of a conventional lock mechanism for an electronic circuit package described in Japanese Patent Application Laid-Open No. 1-268098 will be described with reference to FIGS.

FIG. 5 is an exploded perspective view of a lock mechanism of a conventional electronic circuit package. A hole 5 for attaching a lever 54 to be described later is provided below the front end of the electronic circuit package 51.
2 is provided, and an engagement member 53 to which a stopper 64 described later is engaged is attached by a screw or the like. The engagement member 53 has key portions 53a at both ends and a concave portion 53b.

The electronic circuit package 51 is mounted on the lever 54.
Hole 55 for attaching lever 54 to arm 5, arm 5
6, and forked claw portions 57a and 57b are provided. The arm portion 56 has a square hole 5 into which the stopper 64 is inserted.
8 is provided, and a hole 59 that penetrates the square hole 58 and mounts the stopper 64 is provided. Further, at the upper end of the arm portion 56, a concave portion 56a and a convex portion 56b at both ends are provided. The lever 54 is provided with a groove 60 for fitting the same into the electronic circuit package 51. The front end of the electronic circuit package 51 is inserted into the groove 60, and the pin 62 is inserted into the hole 52 of the electronic circuit package 51 and the lever 54. The lever 54 is rotatably attached to the electronic circuit package 51 by being inserted into the hole 55.

The stopper 64 is provided with a forked foot 65, an arm 66, and a projection 67. The arm portion 66 is provided with an engagement protrusion 66a that engages with the engagement member 53. A stopper 64 is attached to the foot 65 with a pin 68.
Thus, a hole 69 for rotatably mounting the lever 54 is provided. The spring 70 is inserted into the forked foot 65 of the stopper 64 as shown by a broken line, and serves to rotate the stopper 64 about the pin 68 toward the electronic circuit package 51. The spring 70 has two arms 71 that are open in a free state.

In order to assemble the above-mentioned parts, first,
Insert the spring 70 into the bifurcated foot 65 of the stopper 64, deflect the two arms 71 of the spring 70 inward,
The stopper 64 and the spring 70 are inserted into the square hole 58 of the lever 54. Next, the pin 68 is inserted into the hole 59 of the lever 54 and the hole 69 of the stopper 64, and the stopper 64 is
4 to be rotatable.

Then, with the lever 54, the stopper 64 and the spring 70 integrated, the groove 60 of the lever 54 is fitted into the front surface of the electronic circuit package 51. Further, the pins 62 are inserted into the holes 55 of the lever 54 and the holes 52 of the electronic circuit package 51. The lever 54 is connected to the electronic circuit package 51
When rotated in the direction of
The engaging member 53 is fixed to the electronic circuit package 51 with a screw or the like such that the abutment with the key portion 53a of the engaging member 53.

FIGS. 6A to 6C are cross-sectional views showing a process of inserting and locking an electronic circuit package. In the state of (a), the lever 54 is rotated counterclockwise about the pin 62, and as shown in (b), the claw 57a of the lever 54 contacts the inside of the package slot protrusion 81 of the casing. Using the lever as a fulcrum, lever 5
The electronic circuit package 51 is inserted in the direction of the arrow while rotating the counterclockwise direction 4 further. Further, when the lever 54 is rotated counterclockwise, the electronic circuit package 51 is inserted into the casing as shown in FIG.
The engagement protrusion 66a of No. 4 engages with the key portion 53a of the engagement member 53, and the lock is completed.

FIGS. 6D to 6F are cross-sectional views showing the steps of unlocking and removing the electronic circuit package.
In the state of (d), when the protrusion 67 of the stopper 64 is rotated clockwise about the pin 68 with a fingertip as shown in (e), the engagement protrusion 66a of the stopper 64 is changed to the key 53a of the engagement member 53. Break away from Subsequently, when the arm portion 66 of the stopper 64 is pushed as shown in FIG.
Rotate clockwise around 2. Then, the claw portion 57b of the lever 54 is connected to the package slot protrusion 8 of the casing.
The lever 54 is further rotated clockwise by utilizing the principle of leverage, and the electronic circuit package 51 is removed via the pin 62 in the direction of the arrow.

[0010]

In the conventional locking mechanism for an electronic circuit package, the structure of the lever and the stopper is complicated, the number of parts is large, and the engaging member must be fixed to the electronic circuit package. Since it cannot be obtained, the manufacturing process is complicated.

Therefore, the present invention improves on the drawbacks of the prior art, and has a simple structure, a small number of parts, and
It is an object of the present invention to provide a package insertion / extraction mechanism with a simple manufacturing process.

[0012]

The present invention employs the following means to solve the above-mentioned problems.

(1) A package provided with a hole, a casing provided with a package slot and a package slot protrusion, a hole, a front claw engaging with the inside of the package slot protrusion, and the package slot protrusion. A lever provided with a rear claw portion and a lever lock portion engaging with the outside of the arm, an arm provided with a hole at one end and the other end, and a lock arm provided with a hole, a lever lock portion, and a protrusion, respectively. And a pin inserted into the hole of the lever, the one hole of the arm and the hole of the package, and a pin inserted into the other hole of the arm and the hole of the lock arm. .

(2) The package insertion / extraction mechanism according to (1), wherein the lever has a recess into which one end of the arm can be inserted, and the arm has a recess and a groove which can be fitted into the package.

(3) The package insertion / extraction mechanism according to (2), wherein the protrusion provided on the arm is fitted with the recess provided on the lock arm.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a perspective view of a lock mechanism of an electronic circuit package according to the present embodiment. The electronic circuit package 23 is provided with a hole 24 for attaching a lever 20 and an arm 21 described later. The lever 20
A hole 27 for attaching the lever 20 to the electronic circuit package 23, a bifurcated front claw portion 31 and a rear claw portion 32, a lever lock portion 33, and a concave portion 39 into which one end of the arm 21 described later can be inserted are formed. ing. Arm 21
Serves to connect the lever 20 and a lock arm 22 described later. The arm 21 has an electronic circuit package 2
3 is a hole 2 at one end for attaching this arm 21
8. Hole 2 at the other end for connection with lock arm 22
9 and a central groove 40 into which the electronic circuit package 23 is fitted. The lock arm 22 has a hole 30 for connecting to the arm 21, a lever lock portion 34, and a protrusion 35 for releasing the lock.

To assemble the above-mentioned parts, first,
The concave portion 36 of the lock arm 22 is fitted into the convex portion 37 of the arm 21, and the pin 26 is inserted into the holes 29 and 30. next,
The hole 28 of the arm 21 is replaced with the hole 24 of the electronic circuit package 23.
The concave portion 38 of the arm 21 is fitted into the electronic circuit package 23 so that At this time, the groove 4 of the arm 21
0 is inserted into the electronic circuit package 23. Subsequently, the concave portion 41 of the lever 20 is fitted into the electronic circuit package 23 so that the hole 27 of the lever 20 is aligned with the hole 24 of the electronic circuit package 23 and the hole 28 of the arm 21. Further, the lever 20, the arm 21, and the electronic circuit package 23 are fixed by inserting the pin 25 into the holes 27, 28, 24.

FIG. 2 is a perspective view showing a state in which an electronic circuit package employing the above-described lock mechanism is inserted into a casing. Package slot 4 of casing 42
3, an electronic circuit package 23 is mounted. The electronic circuit package 23 is mounted on a back board (not shown) and is shown in a locked state.

FIG. 3 is a sectional view showing a process of inserting and locking the electronic circuit package. 3A shows a state before the electronic circuit package 23 is inserted, and the front claw portion 31 of the lever 20 is located above the package slot protrusion 44. From this position, push the A side of the lever 20 and push the pin 25
Rotate lever 20 counterclockwise around
No. 0 front abutment portion 31 abuts the inside of the package slot projection portion 44, and using the fulcrum as a fulcrum, pushes the A surface of the lever 20 in the counterclockwise direction using the principle of leverage to move the electronic circuit package 23 in the arrow A direction. Insert (B) shows a state where the lever 20 is rotated until it stops. (C)
Shows a state in which the lock arm 22 is rotated clockwise about the pin 26 from the state shown in FIG. Lever lock part 33 of lever 20
And the lever lock portion 34 of the lock arm 22 are easily locked, and the lever 20 is fixed even if a force is generated to pull out the electronic circuit package 23 in the direction of arrow B.

FIG. 4 is a sectional view showing the process of unlocking and removing the electronic circuit package. (A) shows a locked state before the electronic circuit package 23 is removed. (B)
Indicates a state when the lock is released. From the state (a), a fingertip is put on the protrusion 35 of the lock arm 22 and the lock arm 22 is rotated counterclockwise around the pin 26 as a fulcrum to easily lock the lock arm 22. Release can be performed. (C)
Shows the operation after the lock is released. The lever 20 is pushed in the B direction, the lever 20 is rotated clockwise about the pin 25, and the rear claw portion 32 of the lever 20 abuts on the outside of the package slot protrusion 44, and the lever is used as a fulcrum. The electronic circuit package 23 is pulled out in the direction of arrow B by utilizing.

In FIG. 2, two sets of lock mechanisms each including a lever 20, an arm 21, and a lock arm 22 are used. However, one set of lock mechanisms may be used, and the other may use only the lever 20. it can. Further, by attaching only the lever 23 with the pin 25 to an electronic circuit package in which a package holder or a package fixing screw is used, the electronic circuit package can be inserted into and removed from the casing.

[0023]

As is apparent from the above description, the present invention has the following advantages.

(1) The structure of the lever, arm and lock arm is simple.

(2) The number of parts is reduced as compared with the prior art.

(3) Since there is no need to perform complicated processing on the package, the manufacturing process is simple.

[Brief description of the drawings]

FIG. 1 is a perspective view of a lock mechanism of an electronic circuit package according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which an electronic circuit package employing one embodiment of the present invention is inserted into a casing.

FIGS. 3A to 3C are cross-sectional views illustrating a process of inserting and locking an electronic circuit package into a casing according to an embodiment of the present invention, which are shown in order of FIGS.

FIGS. 4A to 4C are cross-sectional views showing a process of unlocking an electronic circuit package and removing the same from a casing according to an embodiment of the present invention; FIGS.

FIG. 5 is an exploded perspective view of a lock mechanism of a conventional electronic circuit package.

FIG. 6 is a cross-sectional view showing a process of inserting and removing an electronic circuit package employing a conventional lock mechanism into and from a casing, and locking and unlocking the casing. ) And unlocking and removal from the casing are shown sequentially in (d) to (f).

[Explanation of symbols]

 Reference Signs List 20 lever 21 arm 22 lock arm 23 electronic circuit package 24 hole 25 pin 26 pin 27 hole 28 hole 29 hole 30 hole 31 front claw portion 32 rear claw portion 33 lever lock portion 34 lever lock portion 35 protrusion 36 recess portion 37 protrusion 38 Recess 39 recess 40 groove 41 recess 42 casing 43 package slot 44 package slot protrusion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H05K 7/14

Claims (3)

(57) [Claims] 1. A package provided with a hole, a casing provided with a package slot and a package slot protrusion, a hole, a front claw engaged with the inside of the package slot protrusion, and a package slot protrusion. A lever provided with a rear claw portion and a lever lock portion engaged with the outside, an arm provided with a hole at one end and the other end, and a lock arm provided with a hole, a lever lock portion and a protrusion, respectively. A pin inserted into the hole of the lever, the one hole of the arm and the hole of the package, and a pin inserted into the other hole of the arm and the hole of the lock arm. Package insertion / extraction mechanism. 2. The package insertion / removal according to claim 1, wherein the lever has a concave portion into which one end of the arm can be inserted, and the arm has a concave portion and a groove which can be fitted into the package. mechanism. 3. The package insertion / extraction mechanism according to claim 2, wherein a concave portion provided on said lock arm is fitted into a convex portion provided on said arm.