FIXING MEMBER AND MOUNTING STRUCTURE

Abstract

A fixing member of the present invention can be mounted to a fixed member that is fixed to a printed circuit board, and is used for fixing the fixed member to the printed circuit board, the fixing member including: a male connector portion inserted into an insertion opening formed in the printed circuit board; a plurality of arm portions provided at the male connector portion; lug portions provided at each tip end side of the arm portions and engaged with an opening edge of the insertion opening; and a lug-guiding portion extending out from a tip end portion of at least one lug portion to guide the lug portion to the insertion opening when the lug-guiding portion comes in contact with the opening edge and is further pressed.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a side sectional view showing insertion of an electronic component mounted to a fixing member into a printed circuit board in a state in which tip ends of lug portions of the fixing member are in contact with an edge of an opening in the printed circuit board, in a first embodiment.

FIG. 2 is a partial enlarged view of the first embodiment shown in FIG. 1.

FIGS. 3A, 3B, and 3C are a front view, a bottom view, and a side view, respectively, showing a male connector portion of a fixing member of a second embodiment in a state in which the male connector portion is not inserted.

FIGS. 4A, 4B, and 4C are a front view, a bottom view, and a side view, respectively, showing the male connector portion of the fixing member of the second embodiment during insertion.

FIGS. 5A, 5B, and 5C are a front view, a bottom view, and a side view, respectively, showing the male connector portion of the fixing member of the second embodiment after completion of insertion.

FIGS. 6A, 6B, and 6C are a front view, a bottom view, and a side view, respectively, showing a male connector portion of a fixing member of a third embodiment in a state in which the male connector portion is not inserted.

FIGS. 7A, 7B, and 7C are a front view, a bottom view, and a side view, respectively, showing the male connector portion of the fixing member of the third embodiment during insertion.

FIGS. 8A, 8B, and 8C are a front view, a rear[bottom?] view, and a side view, respectively, showing the male connector portion of the fixing member of the third embodiment completion of insertion.

FIG. 9 is a side sectional view showing insertion of an example of a conventional fixing member into a printed circuit board in a state in which tip ends of lug portions of the fixing member are in contact with an edge of an opening in the printed circuit board.

Claims

1. A fixing member that can be mounted to a fixed member that is fixed to a printed circuit board and that is used for fixing the fixed member to the printed circuit board, the fixing member comprising: a male connector portion that is inserted into an insertion opening formed in the printed circuit board;a plurality of arm portions provided at the male connector portion;a lug portion provided at respective tip end portions of the arm portions that is engaged with an opening edge of the insertion opening; anda lug-guiding portion extending out from a tip end portion of at least one lug portion toward another lug portion that guides the lug portion to the insertion opening when the lug-guiding portion comes into contact with the opening edge and is further pressed.

2. The fixing member of claim 1, wherein two of the arm portions are provided and the lug-guiding portion extends out from the tip end portion of the lug portion of at least one of the arm portions.

3. The fixing member of claim 2, wherein the lug-guiding portion extends out from the tip end portion of the lug portion of each of the two arm portions andthe lug-guiding portions are formed so as not to interfere with each other when the lug-guiding portions come in contact with the opening edge and guide the lug portions to the insertion opening.

4. A mounting structure comprising: the fixing member according to claim 1;a fixed member at which the fixing member is mounted and from which a terminal protrudes; anda printed circuit board having an insertion opening through which the male connector portion provided at the fixing member is inserted and an insertion hole through which the terminal of the fixed member is inserted, the fixed member being fixed by inserting the male connector portion through the insertion opening and by inserting the terminal through the insertion hole.

5. The mounting structure of claim 4, wherein dimensions of the lug-guiding portion of the fixing member are determined so that, when the male connector portion of the fixing member is pressed toward the insertion opening in the printed circuit board in a state in which the terminal of the fixed member is inserted into the insertion hole, the lug-guiding portion comes into contact with the opening edge and the lug portion is inserted into the insertion opening.

6. The mounting structure of claim 5, wherein the dimensions of the lug-guiding portion in the fixing member are determined based on an inclination angle of the male connector portion with respect to a direction normal to the insertion opening in the printed circuit board when the terminal of the fixed member is inserted into the insertion hole and the lug portion is in contact with the opening edge of the insertion opening.