JPH05291765A - Electronic circuit board mounter and its mounting method - Google Patents

Abstract

PURPOSE:To easily remove a board from a pin without the margin of the through hole of a board getting caught between the head of a mounting pin and a support by giving a projection to the introduction part of a pin for attachment of a board. CONSTITUTION:An introduction part 22 is equipped with a projection 24 which projects in the opposite direction to the groove 13 of a through hole 12a and the side face 24a of which forms the same face as the periphery of the head 21. In case of removing a board 11 from a pin 20, the board 11 is shifted horizontally in Z direction until the inside margin of the through hole 12 abuts on the side face 24a of the projection. Hereby, the positions of the through hole 12 of the board 11 and the head 21 of the pin 20 are decided easily, and the board 11 can be removed of the pin 20 without the margin of the through hole 12 getting caught between the head 21 and the support 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric circuit board mounting device and a mounting method thereof.

[0002]

2. Description of the Related Art In recent years, various means have been proposed as a method for fixing an electric circuit board inside a housing. There is a demand for a method different from the conventional screw-fastening method in order to reduce the number of work steps by facilitating the attachment of the electric circuit board to the housing and to improve the disassembly and assembly during maintenance management.

A conventional electric circuit board mounting device and its mounting method will be described below. In FIG. 1, 11 is an electric circuit board (hereinafter referred to as a board), 12 is a through hole through which a head of a mounting pin penetrates when the board 11 is mounted, 1
Reference numeral 3 is a groove having a width narrower than the diameter of the through hole 12. In FIG. 6, 31 is a head having a diameter smaller than the diameter of the through hole 12, 32 is an introducing portion having a diameter smaller than the width of the groove 13 of the pin 30, and 33 is a substrate 11 having a diameter larger than the through hole 12. It is a support part that supports.

The substrate 11 and the pins 3 configured as described above
A procedure for attaching the substrate 11 to the housing (not shown) using 0 will be described. As shown in FIG. 7, the head 31 of the pin 30 fixed to the housing of the board 11 is aligned with the through hole 12. In this state, the substrate 11 is supported by the supporting portion 33. Further, by horizontally moving the substrate 11 in the direction of the upper side of FIG.
Is also fixed from above by the head 31. By fixing the substrate 11 in the horizontal direction in this state, the substrate 11 is fixed to the housing. When removing the substrate 11, the substrate 11 is horizontally moved in the direction of B as shown in FIG. I do.

[0005]

However, in this prior art example, as shown in FIG. 9, the through hole 12 and the head portion 31 must be accurately positioned when removing the substrate 11, as shown in FIG.
Since the inner edge of the substrate enters between the head portion 31 and the support portion 33, the substrate 11 cannot be removed. Further, when this phenomenon occurs in some of the plurality of mounting pins provided on the housing, there is a problem that the substrate 11 is forcibly lifted and damaged. The present invention solves such a problem, and an object of the present invention is to provide an electric circuit board mounting device and a mounting method thereof, by which a substrate can be easily removed from a pin.

[0006]

In order to achieve the above object, an electric circuit board mounting device of the present invention has an introduction portion projecting in a direction opposite to a groove of a through hole, and the projecting surface is flush with the outer periphery of the head. By providing the projection to be formed, the inner edge of the through hole is prevented from entering between the head portion and the support portion when the electric circuit board is removed from the pin.

[0007]

With this configuration, when the electric circuit board is removed from the pin, the electric circuit board is horizontally moved so that the projecting surface of the lead-in portion of the pin abuts the inner edge of the through hole of the board, and then the electric circuit board is moved upward. By moving, the electric circuit board can be easily removed from the pins.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric circuit board mounting device and a mounting method thereof according to an embodiment of the present invention will be described below with reference to the drawings.

1 and 2, the substrate 11 has a through hole 12 through which a head portion 21 of a pin 20 fixed to a housing (not shown) penetrates, and a pin which is continuous with one end side of the through hole 12. 20 is provided with a groove 13 having a width narrower than the diameter of the through hole 12 into which the introducing portion 22 is introduced, and the pin 20 has a supporting portion 23 that supports the substrate 11 having a diameter larger than that of the through hole 12 provided in the lower portion.
And an introduction part 22 having a diameter smaller than the width of the groove 13 provided above the support part 23, and a head having a diameter smaller than that of the through hole 12 provided above the introduction part 22 and larger than the width of the groove 13. 21 and a protrusion 24 that protrudes in the introduction portion 22 in the direction opposite to the groove 13 of the through hole 12 and has a protrusion surface 24 a that is flush with the outer periphery of the head portion 21.

The method of attaching the board 11 to the pins 20 of this embodiment is the same as the method shown in FIGS. 7 and 8 of the conventional example, but when the board 11 is removed from the pins 20, as shown in FIG. The inner surface of the through hole 12 is formed with the protrusion surface 24a of the protrusion 24.
The substrate 11 is horizontally moved in the direction of B until it touches. At this time, the through hole 12 of the substrate 11 and the head 21 of the pin 20 are automatically positioned. From this state, as shown in FIG. 5, the substrate 11 can be removed from the pin 20 by lifting the substrate 11 upward.

As described above, according to this embodiment, the substrate 11
When the inner edge of the through hole 12 abuts the projecting surface 24a of the protrusion 24 when removing, the positions of the through hole 12 of the substrate 11 and the head 21 of the pin 20 are easily determined, and the through hole 12
The substrate 11 can be easily removed from the pin 20 without the edge of the pin being caught between the head portion 21 of the pin 20 and the support portion 23.

[0012]

As is apparent from the above description of the embodiments, according to the electric circuit board mounting method of the present invention, the board is removed from the housing by providing the projections of the board mounting pins. In this case, the position of the through hole of the board and the head of the mounting pin can be easily determined by bringing the edge of the hole of the board into contact with the protrusion so that the edge of the through hole of the board is between the head of the mounting pin and the supporting portion. Provided is an electric circuit board mounting device and a mounting method thereof, which can easily remove a board from a pin without being caught.

[Brief description of drawings]

FIG. 1 is a perspective view showing a shape of a through hole of an electric circuit board of an embodiment of the present invention and a conventional electric circuit board mounting device.

FIG. 2A is a plan view showing a shape of a mounting pin of an electric circuit board mounting device according to an embodiment of the invention. FIG.

FIG. 3 is a perspective view showing a state in which the electric circuit board is fixed.

FIG. 4 is a perspective view showing a method for removing the electric circuit board.

FIG. 5 is a perspective view showing a state in which the electric circuit board is removed.

FIG. 6 (a) is a plan view showing the shape of a mounting pin used in a conventional electric circuit board mounting device. FIG.

FIG. 7 is a perspective view showing a method for fixing the electric circuit board.

FIG. 8 is a perspective view showing a state in which the electric circuit board is fixed.

FIG. 9 is a perspective view illustrating a problem when the electric circuit board is removed.

[Explanation of symbols]

 11 Electric Circuit Board 12 Through Hole 13 Groove 20 Pin 21 Head 22 Introduction Part 23 Supporting Part 24 Protrusion 24a Projecting Surface

Claims (2)

[Claims] 1. An electric circuit board on which an electronic component is mounted,
An electric circuit board mounting device mainly composed of pins for fixing the electric circuit board to a housing, wherein the electric circuit board has a through hole through which a head of the pin penetrates, and one end side of the through hole. A support part for supporting the electric circuit board having a diameter smaller than the diameter of the through hole into which the continuous introduction part of the pin is introduced, the pin supporting the electric circuit board having a diameter larger than that of the through hole provided in the lower part. And an introduction part having a diameter smaller than the width of the groove provided above the support part, and a head having a diameter smaller than the through hole provided above the introduction part and having a diameter larger than the width of the groove. An electric circuit board mounting device, comprising: a protrusion that protrudes in a direction opposite to the groove of the through hole and has a protrusion surface that is flush with the outer periphery of the head. 2. An electric circuit board mounting method for fixing an electric circuit board on which an electronic component is mounted to the housing by a pin fixed to the housing, wherein the electric circuit board has a head portion of the pin. A through hole that penetrates the groove and a groove that is narrower in diameter than the diameter of the through hole into which the introduction portion of the pin that is continuous with the one end side of the through hole are provided, and the pin is the through hole that is provided in the lower portion. With a support portion supporting the electric circuit board having a larger diameter, an introduction portion having a diameter smaller than the width of the groove provided above the support portion, and a diameter smaller than the through hole provided above the introduction portion. And a head having a diameter larger than the width of the groove,
The lead-in portion is provided with a protrusion that projects in the direction opposite to the groove of the through hole, and the projecting surface thereof forms the same plane as the outer periphery of the head, and when fixing the electric circuit board to the pin, the head A portion of the electric circuit board, the electric circuit board is moved downward to bring the lower surface of the electric circuit board into contact with the upper surface of the support portion, and then the electric circuit board is horizontally moved to move the introduction portion When the electric circuit board is introduced into the groove and fixed, and the electric circuit board is removed from the pin, the electric circuit board is horizontally moved to bring the protruding surface of the introduction portion into contact with the inner edge of the through hole, and then the electric circuit board. How to attach the electric circuit board by moving it upwards and removing it.