JPH04119972U - Printed circuit board insertion/extraction lever mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] Only when the insertion/extraction lever 1 is rotated to a specific operating position with respect to the printed circuit board a, the insertion/extraction lever is held in that position, and when the insertion/extraction lever is rotated, it is allowed to rotate freely. do. [Configuration] Insert/extract lever 1 with printed circuit board a sandwiched between groove 4
is rotatably attached to the shaft, and only when the insertion/extraction lever 1 is rotated to a specific operating position, the free rotation of the insertion/extraction lever 1 is prevented by frictional engagement with the printed circuit board a, and the operating position of the insertion/extraction lever 1 is changed. A protrusion 5 for holding is provided at an appropriate position within the groove 4.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention installs the printed circuit board inside the case or inserts the printed circuit board from inside the case. This invention relates to an insertion/extraction lever mechanism for taking out the .

0002

[Conventional technology]

Insert the printed circuit board into the case, connect it to the connector, and connect the printed circuit board inside the case. The insertion/extraction lever is used to facilitate the operation of detaching and removing the component board from the connector. For example, as shown in FIGS. 4 and 5, the printer is When inserting or removing printed circuit board a, there is a Using the installed insertion/extraction lever 1, insert the printed circuit board a into the case b as shown in Figure 4. After inserting, place the forked tip of the insertion/extraction lever 1 against the eaves b' on the front of the case b. By rotating the insertion/extraction lever 1 clockwise, one protrusion tip 3a of the forked portion 3 is removed. The shaft support 2 of the insertion/extraction lever 1 is rotated toward the case b by lever action using the fulcrum. , therefore, the printed circuit board a is further pushed into the case b in the inserted state, and its The connector is securely connected and set in case b by pushing it in, and the To take out the printed circuit board a from inside the case b, turn the insertion/extraction lever 1 counterclockwise. If it rotates in the clockwise direction, the lever action using the protrusion 3a of the forked tip portion 3 as a fulcrum will cause The pivot support 2 moves away from the case b, and its operation therefore causes the printer to move away from the case b. Board a is separated from the connector connection in case b, and the case is in the state shown in Figure 4. The printed circuit board a can be easily taken out from inside b. In addition, it is installed in case b. In order to secure the connected Punto board a, press the printed circuit board a as described above. It has also been implemented to have a locking mechanism act on the insertion/extraction lever that has finished operating.

0003

[Problem that the idea aims to solve]

In the case where the printed circuit board a is inserted or removed by rotating the insertion/extraction lever 1, It is necessary to make the rotation of lever 1 smooth and light, but in this case, the insertion/extraction lever 1 should rotate freely. As a result, due to vibration and the weight of the insertion/extraction lever 1, the For example, when inserting printed circuit board a into case b, the insertion/extraction lever cannot be maintained. After the insertion operation with the bar 1 in the state shown in FIG. 4, the above-mentioned Although it is desirable to perform push-fitting of the printed circuit board a as shown in FIG. Because of the free rotation, he was unable to maintain that posture and lost his posture as shown in Figure 6. Then, the push-in operation of the printed circuit board a is disabled, and the insertion/extraction lever 1 is rotated again. There was a hassle that required operation.

0004 In addition, in order to eliminate such inconvenience, the shaft support 2 of the insertion/extraction lever 1 is made so that it cannot rotate freely. When using a function shaft support, the structure becomes complicated, and when rotating the insertion/extraction lever, Requires great operating force.

[0005]

[Means to solve the problem]

The present invention eliminates the above-mentioned conventional inconveniences and allows the rotation of the insertion/extraction lever to be as smooth as necessary. In the installation, the free rotation of the insertion/extraction lever can be prevented by a simple means. Insert into the case by rotating the insertion/extraction lever rotatably attached to the corner of the main board. In the case where the printed circuit board is further pushed into the case and connected, the insertion and removal The lever is pivoted with the printed circuit board sandwiched between grooves, and the insertion/extraction lever is inserted into the position where the printed circuit board is inserted. A protrusion that frictionally engages with the printed circuit board to keep it in a state where the joint operation is ready to start. is provided in the groove.

[0006]

[Effect]

In the present invention, when press-fitting the printed circuit board a to the case b, As shown in 1, insert the forked part 3 of the insertion/extraction lever 1 against the upper eaves b' of the case b. When the removal lever 1 rotates, the printed circuit board a is pulled out by lever action using one of the protrusions 3a as a fulcrum. When it is in the operating position where it can be pushed into the case b, the protrusion 5 provided in the groove 4 is Because it is connected to the printed circuit board a, the insertion/extraction rail for the printed circuit board a is created by frictional engagement. Free rotation of the bar 1 is prevented, and the insertion/extraction lever 1 is maintained in the above posture.

[0007] Next, as shown in FIG. 3, rotate the insertion/extraction lever 1 clockwise to remove the printed circuit board a. A pushing operation is performed, and at this time, the printed circuit board a and the protrusion 5 are pressed together by the rotational force. The frictional engagement between the insertion and removal lever 1 is released, and the insertion/extraction lever 1 rotates freely, allowing the print board to move smoothly and easily. The coupling operation is performed by pushing the plate a, and as described above, the insertion/extraction lever 1 is At the starting operation position during the push-in operation of the component board a, its free rotation is prevented and the rotation is stopped. During dynamic operation, the block is released and a freely rotating state is achieved.

[0008]

【Example】

An embodiment of the present invention will be described with reference to FIGS. 1 to 3.

[0009] 1 is rotatably mounted on a shaft 2 with the corner of the printed circuit board a sandwiched between grooves 4. The insertion/extraction lever is shown.

0010 The groove 4 of the insertion/extraction lever 1 allows the insertion/extraction lever 1 to rotate freely relative to the printed circuit board a. A protrusion 5 is provided on one of the inner wall surfaces of the groove 4 to slightly protrude into the groove. Therefore, the width of the groove 4 at the portion where the protrusion 5 is provided is narrow, and the protrusion 5 is When connected to the board 1, the insertion/extraction lever 1 cannot freely rotate with respect to the printed circuit board a. Become.

[0011] When the insertion/extraction lever 1 is rotated about the shaft 2, the protrusion 5 is -1 rotation position is the starting state of the coupling operation by pushing the printed circuit board a against the case b. It is provided at a position that contacts the corner of the printed circuit board a only when the insertion/extraction lever is pressed. -1 is rotated from the starting position so that the protrusion 5 separates from the printed circuit board a. Ta.

0012 In the illustrated example, the protrusion 5 is shown as having a flat surface shape, but its shape may be arbitrary. Ru.

[0013]

[Effect of the idea]

According to the present invention, the groove allows the insertion/extraction lever to pivot freely relative to the printed circuit board. A very simple design with a protrusion that frictionally engages the printed circuit board at a predetermined position within the groove. The means prevents the free rotation of the insertion/extraction lever at a predetermined position, thereby changing its operating position. In addition, the insertion/extraction lever can be rotated freely during operation, so it is easy to insert/extract. It has the effect of making the extraction lever operation light and easy, and also making it easier to attach and detach the printed circuit board. Ru.

[Brief explanation of drawings]

[Figure 1] Side view of the retention state of the insertion/extraction lever in the mechanism of the present invention

[Figure 2] Side view of the rotating state of the insertion/extraction lever as above

[Figure 3] Cross-sectional view along line III-III in Figure 1

[Figure 4] Side view showing the conventional printed circuit board insertion operation

[Figure 5] Side view showing the operation of removing the printed circuit board as above.

[Fig. 6] Side view showing an inconvenient state of the insertion/extraction lever in the conventional example

[Explanation of symbols]

1 Insertion/extraction lever 2 Axial support 4
Groove a Printed circuit board b Case

Claims (1)

[Scope of utility model registration request] [Claim 1] A printed circuit board inserted into a case is further pushed into the case by rotating an insertion/extraction lever pivotally attached to a corner of the printed circuit board, and the insertion/extraction lever is a groove. A printed circuit board insertion/extraction lever that is pivoted with a printed circuit board in between and has a protrusion in a groove that frictionally engages with the printed circuit board so as to hold the insertion/extraction lever in a state where the insertion/extraction lever is ready to start the push-in engagement operation of the printed circuit board. mechanism.