JPH08222869A - Wiring board fixing structure - Google Patents

Abstract

PURPOSE: To provide a wiring board fixing structure in which a wiring board can be efficiently and easily fixed to a holding means without causing damages, etc., to a soldered part by which a terminal is fixed to the wiring board. CONSTITUTION: A wiring board fixing structure is provided with a terminal composed of two L-shaped connecting sections 41 and 42, a wiring board 1 to which one connecting section 41 of the terminal 4 is fixed by soldering, etc., 1a, and holding means (case) which holds the wiring board 1 by fixing the other connecting section 42 of the terminal 4 with a screw member 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring board fixing structure for fixing a wiring board to a holding means with a screw member through a terminal provided on the wiring board.

[0002]

2. Description of the Related Art An example of a fixing structure for a wiring board of this type is shown in FIG. That is, the structure is such that a hard printed wiring board (hereinafter referred to as a wiring board) 1 is fixed to a case (holding means) 2 via a screw member 3 and a terminal 4. The terminal 4 is formed by bending one and the other connecting portions 41 and 42 at a substantially right angle (L shape), and the one connecting portion 41 is fixed to the wiring board 1 by soldering 1a or the like. A screw hole 42a is formed in the other connecting portion 42, and the screw member 3 is screwed into this screw hole 42a.

Further, the case 2 is provided with a boss 21 for connecting with the other connecting portion 42 of the terminal 4. A through hole 21 a is formed in the boss 21 so as to penetrate the case 2.
The male screw portion 3a of the screw member 3 is inserted through the screw la.

In the wiring board fixing structure constructed as described above, the other connecting portion 42 of the terminal 4 is brought into contact with the boss 21, the screw member 3 is inserted into the through hole 21a, and the male screw portion thereof is inserted. 3a is screwed into the screw hole 42a of the terminal 4 to be tightened, so that the wiring board 1 is fixed to the case 2
Fixed to.

[0005]

By the way, in the above-mentioned wiring board fixing structure, when the screw member 3 is screwed into the screw hole 42a of the terminal 4, the terminal 4 is inevitable.
3 is pushed by the screw member 3 and escapes in the direction away from the boss 21, so that the wiring board 1 is removed from the boss 2 as shown in FIG.
The screw member 3 is screwed in while being pressed to the 1 side.
Therefore, the screw member 3 is attached to the screw hole 42a with a driver or the like.
Since the work of screwing in and the work of pressing the wiring board 1 against the boss 21 must be performed at the same time, there is a problem that the work is troublesome and inefficient. Moreover, as shown in FIG. 3, if the wiring board 1 is merely pushed to the boss 21 side, the other connecting portion 42 of the terminal 4 is pushed by the screw member 3, and the terminal 4 uses one connecting portion 41 side as a fulcrum. hand,
It will rotate in the direction of arrow A. Therefore, there is a risk that the portion of the soldering 1a that fixes the one connection portion 41 to the wiring board 1 may be damaged.

The present invention has been made in order to solve the above-mentioned problems, and an object of the present invention is to enable a wiring board to be efficiently and easily fixed to a holding means, and also to use a soldering method for fixing a terminal to a wiring board. (EN) It is an object to provide a fixing structure for a wiring board, which is free from the risk of damage to a part.

[0007]

In order to achieve the above object, the present invention has a terminal in which one and the other connecting portions are formed in an L shape, and one connecting portion of this terminal is fixed by soldering or the like. In the fixing structure of the wiring board, the wiring board and the holding means for holding the wiring board by fixing the other connecting portion of the terminal with a screw member are provided on the other connecting portion of the terminal. Is provided with a screw hole into which the screw member is screwed, the holding means is provided with a through hole into which a male screw portion of the screw member can be inserted, the wiring board, and the other connecting portion of the terminal. A guide member for guiding to the position of the through hole and guiding the screw hole so that the screw hole fits into the through hole, and one of the other connecting parts when the other connecting part of the terminal reaches the position of the through hole. of And a locking member for locking the terminal on the side opposite to the connecting portion to prevent the terminal from moving in the direction away from the position of the through hole. It is characterized in that the wiring board is fixed to the holding means via the terminal by being inserted and screwed into the screw hole of the terminal.

[0008]

In the wiring board fixing structure constructed as described above, when the wiring board guided by the guide member is moved to the position of the through hole of the holding means, the other connecting portion of the terminal engages with the locking member. Stop. Therefore, the terminal does not move in the direction away from the through hole. Therefore, a screw member is inserted into the through hole, and the male screw portion is screwed into the screw hole of the terminal. At this time, since the terminal does not move away from the through hole, the screw member can be easily screwed into the screw hole of the other connecting portion. That is, it is not necessary to simultaneously perform the work of pressing the wiring board toward the through hole and the work of screwing the screw member into the screw hole, and it is possible to concentrate only on the work of screwing the screw member into the screw hole. The wiring board can be efficiently and easily fixed to the holding means.

Moreover, since the locking member locks the portion of the other connecting portion on the opposite side of the one connecting portion, the terminal rotates so that the portion on the one connecting portion side serves as a fulcrum. There is no displacement. Therefore, there is no possibility of causing damage or the like to the soldering portion for fixing one connection portion to the wiring board.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. However, elements common to the constituent elements of the conventional example shown in FIG. 3 are designated by the same reference numerals to simplify the description. The main difference of the embodiment described here from the conventional example shown in FIG. 3 is that a case (holding means) 2 is formed in a box shape, and a locking member 22 and a guide member 23 are provided in this case 2. It is a point.

That is, the case 2 is formed in a box shape by the bottom plate 24 and the side plate 25, and the bottom plate 24 has a guide member 23 having a U-shaped cross section for guiding the side edge portion of the wiring board 1.
23 are erected. And each guide member 23, 23
A cylindrical boss 21 is provided at a position where the terminal 4 of the wiring board 1 guided by the above contacts the bottom plate 24. The boss 21 is formed with a through hole 21 a that penetrates both the boss 21 and the bottom plate 24. This through hole 21a
Has a shaft center substantially aligned with the screw hole 42a of the terminal 4 and is formed in a size such that the male screw portion 3a of the screw member 3 can be inserted therethrough. The boss 21 and the guide member 23 are integrally formed with the case 2 by resin.

Further, the bottom plate 24 is provided with a locking member 22 for locking the terminal 4 near the boss 21. The locking member 22 is formed integrally with the case 2 by a resin forming the case 2, and a notch 22a for locking the tip of the other connecting portion 42 of the terminal 4 is formed in the head. ing. That is, the notch 22 a of the locking member 22 is formed on the one connecting portion 4 of the other connecting portion 42.
The part on the side opposite to 1 is locked, and the terminal 4 is
It is designed to prevent movement away from. Further, the head of the locking member 22 is formed with an inclined surface 22b for reaching the notch 22a without disturbing the movement of the terminal 4 when the terminal 4 moves vertically to the boss 21 side. Has been done.

In the wiring board fixing structure constructed as described above, when the wiring board 1 is moved to the boss 21 side of the case 2 along the guide member 23, the tip end portion 42b of the other connecting portion 42 of the terminal 4 is moved. Is a slope 22b of the locking member 22
Then, the head of the locking member 22 bends so as to escape from the terminal 4. Therefore, the terminal 4 easily moves to the boss 21, and the other connecting portion 42 of the terminal 4 is locked by the stepped engaging portion 22 a of the locking member 22. From this state, the through hole 21a formed in the boss 21
The screw member 3 is inserted into and the male screw portion 3a is screwed into the screw hole 42a of the terminal 4. At this time, Terminal 4
Is locked to the locking member 22, the terminal 4
Is not pushed by the screw member 3 to move away from the boss 21.

Therefore, according to the above-mentioned wiring board fixing structure, it is not necessary to simultaneously press the wiring board 1 toward the through hole 21a and screw the screw member 3 into the screw hole 42a. The wiring board 1 can be efficiently and easily fixed to the case 2 because it is possible to concentrate only on the operation of screwing the wiring board 3 into the screw hole 42a.

Moreover, since the locking member 22 locks the portion of the other connecting portion 42 opposite to the one connecting portion 41, the terminal 4 uses the portion on the one connecting portion 41 side as a fulcrum. There is no displacement to rotate. Therefore, there is no possibility that the portion of the soldering 1a that fixes the one connection portion 41 to the wiring board 1 is damaged.

Further, the guide members 23, 23 and the locking member 2
Since the wiring board 1 can be fixed to the case 2 with only two kinds of members such as 2 and 22, even if the screw member 3 comes off, for example, the wiring board 1
Will not drop out immediately.

[0017]

According to the present invention, by the locking member,
Since the wiring board and the terminal can be prevented from moving in the direction away from the through hole, the screw member can be easily screwed into the screw hole of the terminal. That is, it is not necessary to simultaneously perform the work of pressing the wiring board toward the through hole and the work of screwing the screw member into the screw hole, and it is possible to concentrate only on the work of screwing the screw member into the screw hole. The wiring board can be efficiently and easily fixed to the holding means.

Moreover, since the locking member locks the portion of the other connecting portion on the side opposite to the one connecting portion, the terminal rotates so that the portion on the one connecting portion side serves as a fulcrum. There is no displacement. Therefore, there is no possibility of damaging a portion such as soldering for fixing one connection portion to the wiring board.

[Brief description of drawings]

FIG. 1 is a sectional view of a wiring board fixing structure shown as an embodiment of the present invention.

FIG. 2 is a perspective view of a fixing structure of the wiring board.

FIG. 3 is a sectional view of a wiring board fixing structure shown as a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Wiring board 1a Soldering 2 Holding means (case) 3 Screw member 3a Male screw part 4 Terminal 21a Through hole 22 Locking member 23 Guide member 41 One connection part 42 Other connection part 42a Screw hole

Claims (1)

[Claims] 1. A terminal having one and the other connecting portions formed in an L-shape, a wiring board having one connecting portion of the terminal fixed by soldering, and the other connecting portion of the terminal with screw members. A fixing structure for a wiring board, comprising: holding means for holding the wiring board by fixing, wherein a screw hole into which the screw member is screwed is provided in the other connecting portion of the terminal, The means includes a through hole into which the male screw portion of the screw member can be inserted, and the wiring board that guides the other connecting portion of the terminal to the position of the through hole. When the guide member that guides the other terminal and the other connecting portion of the terminal reach the position of the through hole, the portion of the other connecting portion opposite to the one connecting portion is locked, and the terminal Is a through hole And a locking member for preventing movement in a direction away from the position, and by inserting the screw member into the through hole of the holding means and screwing the screw member into the screw hole of the terminal, A structure for fixing a wiring board, characterized in that the wiring board is fixed to a holding means by means of a wiring board.