JPH1013062A - Pull-out tool with function for preventing printed circuit board from being pulled out - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a pull-out fitting to play a role of both pull-out function and pull-out preventive function, and to provide a pull-out tool with a pull-out prevention function that can be operated easily in a simple configuration. SOLUTION: When a pull-out fitting 3 is retained at the edge part of a printed circuit board 2 so that it can be rotated freely and a lever 3C is rotated, a protrusion 3A pushes the inside of an edge part 1A of an enclosure 1 and inserts the printed circuit board 2 into the enclosure 1, a hemispherical protrusion 3F enters a hole 2B and locks the printed circuit board 2 into the enclosure 1. Then, when the lever 3C is turned by a force for causing the hemispherical protrusion 3F to go over the hole 2B of the printed circuit board 2, locking for the enclosure 1 of the printed circuit board 2 is canceled and the protrusion 3B pushes the outside of the edge part 1A of the enclosure and the printed circuit board 2 is pulled out of the enclosure 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION When a printed circuit board is inserted into a connector mounted on a housing and the printed circuit board is removed from the connector, a pulling tool mounted on the printed circuit board is rotated to pull out the printed circuit board from the connector. The present invention relates to this pull-out tool, and when a large number of printed circuit boards are attached to a housing,
The present invention relates to a pull-out tool having a function of preventing a printed board from being detached so that each printed board can be easily detached from a housing.

[0002]

2. Description of the Related Art The construction of a printed circuit board extracting tool according to the prior art will be described with reference to an exploded perspective view of FIG. In addition,
FIG. 5 is technically the same as FIG. 1 of Japanese Utility Model Laid-Open No. 04-137093. 5 is a housing, 12 is a printed circuit board, 13
Is a puller, 14 is a stopper, 15 and 16 are pins, and 17 is a spring. The housing 1 has an end 1A whose corner is bent in an L-shape. Hole 1 at the end of printed circuit board 12
2A is opened, the pin 15 is inserted, and the puller 13 is held rotatably.

[0003] The extraction tool 13 includes a projection 13A, a projection 13A.
B and a lever 13C are formed, and a counterbore 13D is formed in the center. Also, the distance L from the projection 13A
1, a through hole 13F is formed in the side surface 13E at a distance L2 from the projection 13B, a slot 13G communicating with the counterbore 13D is formed in the side 13E, and the counterbore 1 is formed in the upper surface 13H.
A square hole 13J communicating with the 3D is opened.

[0004] The stopper 14 slides inside the pull-out tool 13, and a convex portion 14 A formed at the end protrudes from a square hole 13 J of the pull-out tool 13. The pin 15 is inserted into the hole 12A of the printed circuit board 12 and the through hole 13D of the extraction tool 13, and
The puller 13 is rotatably held with respect to the second end. The pin 16 is fixed to the side surface of the stopper 14, and guides the stopper 14 in the elongated hole 13 </ b> G of the extraction tool 13. The spring 17 is inserted into the counterbore 13D of the puller 13, and pushes the stopper 14 toward the protrusion 13B.

In FIG. 5, since the spring 17 pushes up the stopper 14 and the end of the stopper 14 and the projection 13A of the puller 13 sandwich the end 1A of the housing 1, the printed board 12
Does not move from the housing 1. When the convex portion 14A is pressed down,
The stopper 14 moves inside the extraction tool 13 and moves down. In addition, the stopper 14 guides the pin 16 by the long hole 13G, and determines the stop position of raising and lowering.

In FIG. 5, a protrusion 14A of a stopper 14 is provided.
When the lever 13C is rotated counterclockwise while the lever is lowered, the puller 13 rotates, and the protrusion 13B of the puller 13 is rotated.
Pushes the outside of the end 1A, the printed circuit board 12 moves rightward and is removed from the housing 1.

When the lever 13C is rotated clockwise, the projection 13A contacts the inside of the end 1A, and the printed board 12 is moved leftward by leverage, and the printed board 12 is inserted into the housing 1. When the protrusion 14A is opened, the stopper 4 automatically returns by the action of the return spring 17, and the inserted state of the printed circuit board 2 is maintained.

[0008]

The drawer shown in FIG. 5 has a complicated structure, and the lever must be rotated with the stopper kept down, so that the operation is troublesome. The present invention
The puller has both a pull-out function and a pull-out prevention function, and
An object of the present invention is to provide a pull-out tool having a simple structure and an easy-to-operate pull-out prevention function.

[0009]

In order to achieve this object, the present invention provides an end portion 1A having an L-shaped corner.
A pull-out tool for the printed circuit board 2 that enters and exits the housing 1, wherein the pull-out tool 3 forms a protrusion 3 </ b> A that contacts the inside of the end 1 </ b> A of the housing 1, and the outside of the end 1 </ b> A of the housing 1. Is formed, a lever 3C is formed on the opposite side of the projection 3B, and a through hole 3D is formed near the projection 3A to form a projection 3A.
A vertical groove 3E slightly larger than the thickness of the printed circuit board 2 is formed at the end including the through hole 3D, a hemispherical projection 3F protruding from the inner wall of the vertical groove 3E is provided, and a pin 5 is inserted into the through hole 3D for printing. When the puller 3 is rotatably held with respect to the end of the substrate 2 and the lever 3C is rotated in the first direction, the projection 3A pushes the inside of the end 1A of the housing 1 to transfer the printed circuit board 2 to the housing 1. The semi-spherical projection 3F enters the hole 2B of the printed circuit board 2 to lock the printed circuit board 2 to the housing 1, and the lever 3C is turned in the opposite direction to the first direction by the force of the semi-spherical projection 3F riding over the hole 2B of the printed circuit board 2. When the printed circuit board 2 is rotated in the second direction, the printed circuit board 2 is unlocked from the housing 1 and the projection 3B pushes the outside of the end 1A of the housing 1 to move the printed circuit board 2 to the housing 1.
Pull out from.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a configuration of a puller according to an embodiment of the present invention. In FIG. 1, 2 is a printed circuit board, 3 is a pull-out tool, and 5 is a pin. The housing 1 in FIG. 1 is the same as the housing 1 in FIG. A hole 2A is formed in the end of the printed circuit board 2, the pin 5 is inserted, and the pull-out tool 3 is held rotatably.

In FIG. 1, a projection 3A and a projection 3B are formed on the upper portion of the pulling tool 3. A lever 3C is formed on the opposite side of the projection 3B. A through hole 3D is formed in the vicinity of the projection 3A from the side. A vertical groove 3E slightly larger than the thickness of the printed circuit board 2 is formed at the end including the protrusion 3A and the through hole 3D. A hemispherical projection 3F protruding from the inner wall of the vertical groove 3E is provided. The pin 5 is inserted into the hole 2 </ b> A of the printed board 2 and the through hole 3 </ b> D of the removal tool 3, and holds the removal tool 3 rotatably with respect to the end of the printed board 2.

Next, according to the state change diagrams of FIG. 2 to FIG.
The operation of the extraction tool according to the present invention will be described. 2 is a view showing a state in which the printed circuit board 2 is inserted into the housing 1. FIG. 2A is a side view of a main part of FIG. 1, and FIG. 2A is a sectional view taken along the line XX of FIG.
When the lever 3C is rotated clockwise from the state of FIG. 1, the protrusion 3A pushes the inside of the end 1A of the housing 1 and moves the printed board 2 to the left by leverage. As shown in FIG. 2A, the hemispherical projection 3F enters the hole 2B of the printed circuit board 2,
The posture of the extraction tool 3 with respect to the printed circuit board 2 is maintained. In FIG. 2, the printed circuit board 2 is locked to the housing 1, and the printed circuit board 2 does not come off easily.

From the state shown in FIG.
When F rotates counterclockwise by the force of riding on the hole 2B of the printed circuit board 2, the state shown in FIG. 3 is obtained. That is, when the lever 3C is pulled up from the state of FIG. 2, the side piece including the hemispheric projection 3F is elastically deformed, and the hemispheric projection 3F is released from the hole 2B.

When the puller 3 is rotated by a predetermined angle from the state shown in FIG. 2, the projection 3B comes into contact with the outside of the end 1A. FIG.
This shows a state in which the protrusion 3B is in contact with the outside of the end 1A.
When the lever 3C is further rotated counterclockwise from the state shown in FIG. 3, the protrusion 3B pushes the end 1A, and the printed board 2 moves to the right side by the leverage, and the state shown in FIG. 4 is obtained.

In the state shown in FIG. 4, the printed circuit board 2 is
Can be removed from Lever 3 from the state of FIG.
If C is rotated clockwise, it will be in the locked state of FIG.

[0016]

According to the present invention, if the extraction tool is provided with a hemispherical projection, the hemispherical projection enters the hole of the printed circuit board to maintain the locked state, and if the hemispherical projection rotates the lever with the force of climbing over the hole, In addition, the printed circuit board can be pulled out of the housing, and a pull-out tool having a simple structure and easy operation can be provided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a printed board extracting tool according to the present invention.

FIG. 2 is an inserted state diagram of a printed circuit board according to the present invention.

FIG. 3 is a state change diagram of FIG. 2;

FIG. 4 is a state change diagram of FIG. 3;

FIG. 5 is a configuration diagram of a printed circuit board extracting tool according to the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 1A End part 2 Printed circuit board 2A hole 2B hole 3 Extraction tool 3A protrusion 3B protrusion 3C lever 3D through hole 3E Vertical groove 3F Hemisphere protrusion

Claims (1)

[Claims] 1. A pull-out tool for a printed circuit board (2) which enters and exits a housing (1) forming an end (1A) having an L-shaped bent corner, wherein said pull-out tool (3) is a housing. A first projection (3A) is formed inside the end (1A) of the body (1), and a second projection (3B) is formed outside the end (1A) of the housing (1). A lever (3C) is formed on the opposite side of the second projection (3B), and a through hole is formed near the first projection (3A).
(3D), a vertical groove (3E) slightly larger than the thickness of the printed circuit board (2) is formed at the end including the first protrusion (3A) and the through hole (3D), and the vertical groove (3E) is formed. Provide a hemispherical projection (3F) projecting from the inner wall, insert a pin (5) into the through hole (3D), hold the puller (3) rotatably against the end of the printed circuit board (2), and use the lever ( When 3C) is rotated in the first direction, the first protrusion (3A)
Presses the inside of the end (1A) of the housing (1) and presses the printed circuit board (2)
Into the housing (1), and the hemispherical projection (3F) is on the printed circuit board (2).
Into the hole (2B), lock the printed circuit board (2) to the housing (1), and push the lever (3C) into the hole (2B) on the printed circuit board (2) with the hemispherical projection (3F).
When the printed circuit board (2) is rotated in a second direction opposite to the first direction by a force that rides on the printed circuit board (2), the lock of the printed circuit board (2) with respect to the housing (1) is released. A removal tool with a function to prevent the printed circuit board from coming off, characterized in that the printed circuit board (2) is pulled out of the housing (1) by pushing the outside of the end (1A).