JPH0593067U - Printed wiring board - Google Patents

Abstract

(57) [Summary] [Purpose] Minimize the space for positioning the printed wiring board with respect to the mounting members. A protrusion 1b serving as a positioning pin is provided on the upper end of a fixed boss 1 provided upright on a case 6, and a square hole 2b is formed as a pin hole on the outer periphery of a screw hole 2a of a printed wiring board 2. 1b is fitted in the square hole 2b and positioned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a printed wiring board having a pin hole and a screw hole for positioning and fixing the mounting member.

[0002]

[Prior Art]

 When the printed wiring board is positioned and fixed to a mounting member such as a case, conventionally, as shown in FIG. 4, the printed wiring board 2 is mounted on, for example, two fixing bosses 1 provided upright on the side of the case which is the mounting member. It was placed and the screw 3 was inserted into a screw hole (not shown) formed in the printed wiring board 2 and screwed into a screw hole (not shown) formed on the fixed boss 1 side. At this time, in order to position the screw hole on the printed wiring board 2 side and the screw hole on the fixed boss 1 side, two positioning pins 4 are erected at predetermined positions on the case side, and the printed wiring board 2 side is fixed. Two pin holes 5 were formed at predetermined positions, and the positioning pin 4 was inserted into the pin hole 5. Or, the positioning was performed using a jig.

[0003]

[Problems to be solved by the device]

 However, according to the conventional printed wiring board 2 shown in FIG. 4 configured as described above, the pin hole 5 must be provided for positioning, and there is a problem that the mounting space is reduced. In addition, there is a drawback that it takes time and effort to perform positioning using jigs and tools.

The present invention has been made in view of the above points, and an object thereof is to provide a printed wiring board which can minimize the space for positioning.

[0005]

[Means for Solving the Problems]

 To achieve the above object, the present invention provides a print having a screw hole through which a screw for fixing to a mounting member is inserted and a pin hole through which a pin for positioning with respect to the mounting member is inserted. In the wiring board, the pin hole is formed adjacent to the screw hole.

[0006]

[Action]

 According to the above configuration, since the screw hole and the pin hole are formed adjacent to each other at substantially the same position, there is almost no dead space for positioning the printed wiring board, and the mounting space can be widened.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 show the configuration of an embodiment of the present invention. In these figures, parts corresponding to those of the conventional example shown in FIG. 4 are designated by the same reference numerals, and the description thereof will be omitted as appropriate. The feature of this embodiment is that the positioning pin 4 and the pin hole 5 shown in FIG. 4 are omitted, and a positioning function is added to the upper end of the fixed boss 1. That is, a protrusion 1b having a rectangular cross section as a pin is formed so as to protrude from the upper end on a part of the outer periphery of the screw hole 1a of the fixed boss 1 provided upright on the case 6, and the protrusion 1b serves as a positioning pin. did. Then, a square hole 2b as a pin hole into which the protrusion 1b is fitted is formed at a predetermined position on the outer periphery of the screw hole 2a formed in the printed wiring board 2 so as to communicate with the screw hole 2a. The height of the protruding portion 1b protruding from the upper end surface of the fixed boss 1 is set lower than the thickness of the printed wiring board 2, and the outer diameter of the fixed boss 1 is set smaller than the outer diameter of the head of the screw 3.

According to this embodiment, the protrusions 1b of the fixed boss 1 are fitted into the square holes 2b formed in the printed wiring board 2 for positioning, and the screws 3 are formed on the printed wiring board 2. It can be inserted into the screw hole 2a and easily screwed into the screw hole 1a of the fixed boss 1. At this time, since the protrusion 1b is within the range covered by the head of the screw 3, the mounting space for positioning is not reduced.

As shown in FIG. 3, a screw hole 2a formed in the printed wiring board 2 may be formed near the outer circumference so that the square hole 2b communicates with the outer circumference.

[0011]

[Effect of the device]

 As described above, according to the printed wiring board of the present invention, the pin hole for positioning the printed wiring board with respect to the mounting member is formed adjacent to the screw hole for fixing the printed wiring board to the mounting member. The dead space for positioning is eliminated, and the mounting space can be secured.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a configuration of a main part of an embodiment of a printed wiring board according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a plan view showing the configuration of the main part of another embodiment of the present invention.

FIG. 4 is a perspective view showing the configuration of an example of a conventional printed wiring board.

[Explanation of symbols]

 1b Pin (projection) 2 Printed wiring board 2a Screw hole 2b Pin hole (square hole) 3 Screw 6 Mounting member (case)

Claims (1)

[Scope of utility model registration request] 1. A printed wiring board having a screw hole through which a screw for fixing to a mounting member is inserted, and a pin hole through which a pin for positioning with respect to the mounting member is inserted, A printed wiring board formed adjacent to the screw hole.