JPH05191005A - Printed wiring board fixing material - Google Patents

Abstract

PURPOSE:To mount or dismount only the second printed wiring board along a guide member independent of the adjacent printed wiring board through the front part of an electronic device by a method wherein an insulative guide member is provided on the first printed wiring board. CONSTITUTION:An insulative guide member 11 is provided on the first printed wiring board 2, and a terminal 10 is fixed by the guide member 11. After the second printed wiring board 3 has been inserted along the guide member 11, a protrusion 12 is fitted into the fixing hole 13 provided on the second printed wiring board and thereby the second printed board 3 is fixed. In this case, the protrusion 12 expands because it has restoring property. Other protrusion 12 shrinks because it makes contact with a contact part 14. Also, the second printed wiring board 3 is easily deformed by finger pushing in the vicinity of the fixing hole 13 toward the right side, because the obliquely-cut sloping surface has no right-side part, the protrusion 12 comes off the hole 13, and the second printed wiring board 3 can be pulled out to the front of a cabinet 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed wiring board housed in an electronic device, and is capable of performing expansion, maintenance and inspection work for function expansion on the printed wiring board housed in the device. The present invention relates to a printed wiring board fixing member that has a function of connecting means when connecting another possible printed wiring board.

[0002]

2. Description of the Related Art Conventionally, an electronic device is mounted on a printed wiring board (hereinafter referred to as a first printed wiring board) housed therein, mainly for work such as expansion for function expansion and maintenance / inspection. One or a plurality of different printed wiring boards (hereinafter referred to as the second printed wiring board)
May be connected on the first printed wiring board.

Further, as the second printed wiring board,
As shown in FIG. 8, the size of the printed wiring board differs depending on its specifications and functions, and the number of printed wiring boards accommodated also differs. Further, although the number of cores of the connector for connecting the first printed wiring board and the second printed wiring board is not constant, for example, there may be a case where they are connected by about 2 to 4 pairs of connectors having a plurality of terminals of the same type. Many (two pairs in FIG. 8).

A conventional printed wiring board fixing member as described above will be described below with reference to the drawings.

FIG. 8 is a perspective view in which the second printed wiring board is fixed to the first printed wiring board using the conventional printed wiring board fixing member.

In a conventional connector, which is a printed wiring board fixing member, a first connector and a second connector are provided on a first printed wiring board and a second printed wiring board, respectively. For example, the function is expanded (in FIG. 8, the first connector is a male and the second connector is a female. Generally, in order to prevent the male pin from bending, the insertion side Is male and the receiving side is female).

Further, the first printed wiring board and the second printed wiring board are directly connected to each other by using a wire material such as a cable, for example, both ends of the wire material are soldered to the respective printed wiring boards. In some cases, connectors may be provided at both ends of the cable and receivers may be provided in the respective wiring boards for connection (not shown).

1 is a cabinet, 2 is a first printed wiring board, 3 is a second printed wiring board, 4 is a first printed wiring board for supplying signals and power to the second printed wiring board 3. The first connector 5 provided on the second printed circuit board 2 is the second connector 5 provided on the second printed wiring board 3.
Connector, 6 is a guide rail for accommodating the first printed wiring board 2 in the cabinet 1 and serves as a guide at the time of insertion / removal, 7 is a male terminal provided inside the second connector 5, and 8 is inside the first connector 4. The female terminal 9 is provided on the outer periphery of the second connector 5, and is a guide portion that serves as a guide when the second connector 5 is fitted to the first connector.

FIG. 9 is a perspective view showing a state in which the first printed wiring board 2 to which the second printed wiring board 3 is connected via the printed wiring board fixing member is accommodated in the cabinet 1.

As shown in the drawing, the first connector 4 and the second connector 5 are fitted and held from the direction of arrow C.

FIG. 10 shows a cabinet 1 in which a first printed wiring board 2 to which a second printed wiring board 3 is connected via a printed wiring board fixing member is accommodated, and is further adjacent to another first printed wiring board. It is a perspective view showing the state where wiring board 2 was stored.

In the figure, a printed wiring board similar to the first printed wiring board 2 is provided next to the second printed wiring board 3 in which the first connector 4 and the second connector 5 are held by fitting. In some cases, the guide rails 6 for accommodating the first printed wiring boards 2 need to be narrowed as much as possible in order not to increase the size of the cabinet 1. Is accommodated, or even when the first printed wiring board 2 holding the second printed wiring board 3 is accommodated,
The wiring boards are sandwiched so as not to touch the adjacent printed wiring boards.

[0013]

However, in the above-mentioned structure, when a person skilled in the art intends to remove only the second printed wiring board, the first printed wiring board is inserted into the accommodating portion immediately adjacent to the second printed wiring board. In each state, the second
It is necessary to take out the printed wiring board 3 together with the first printed wiring board 3 from the electronic device.

If the first printed wiring board and the second printed wiring board are connected by a connector, it is necessary to manufacture the male / female connector itself according to the specifications.

The present invention solves the above problem, and when it is necessary to insert / remove the second printed wiring board at the time of function addition or maintenance / inspection, the first printed wiring board holding the second printed wiring board is provided. The second printed wiring board can be easily inserted / removed without removing the board, and the second printed wiring board is prevented from coming off even if the apparatus itself containing the printed wiring board has a bad environment and the apparatus itself vibrates. It is an object of the present invention to provide a printed wiring board fixing member that can be manufactured.

[0016]

In order to achieve this object, the present invention has a variable type having a protrusion having conductivity and a restoring force at a tip on a first printed wiring board accommodated in an electronic device. A plurality of terminals, and a plurality of variable pairs of insulating holding members for holding the terminals, and the terminal portion is provided in accordance with the specifications of the second printed wiring board and the number of terminals, and The structure is such that it can be reinforced by a printed wiring board holding member that can accommodate the length of the.

[0017]

With the above structure, when it is necessary to insert and remove only the second printed wiring board accommodated in the cabinet together with the first printed wiring board from the operation surface, the second printed wiring board is guided. It is inserted along the member (printed wiring board fixing member), and the second printed wiring board is held by the protrusions between them, so there is no wobbling and it is provided on the second printed wiring board when inserted to the end. The projection fits into the fixed hole and is fixed. In this case, since the protrusion 12 has a restoring force, it is spread and fixed. The other protrusions are contracted because they are in contact with the contact points.
Further, when removing the second printed wiring board, the second printed wiring board is deformed and disengaged from the protrusions by pushing the vicinity of the fixing hole with a finger, and the second printed wiring board serves as a guide member in the front direction of the cabinet. You can pull it along.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. The same reference numerals are used for the components having the same functions as those of the conventional example. FIG. 1 is a perspective view showing a state in which a printed wiring board fixing member according to an embodiment of the present invention is attached to a first printed wiring board. In FIG.
Reference numeral 10 denotes a plurality of electrically conductive mechanical connecting means (hereinafter referred to as terminals) provided on the first printed wiring board 2, and a tip portion thereof is provided in a hole provided on the first printed wiring board 2. Fixed. 11 is the first printed wiring board 2
The guide member is provided on the top and fixes the terminal 10. Reference numeral 13 is a fixing hole provided on the second printed wiring board 3. Reference numeral 12 is an arc-shaped projection provided inside the guide member 11 and provided at one end of the terminal 10 and having a restoring force.

FIG. 2 is a perspective view showing a state in which the second printed wiring board 3 is fixed to the first printed wiring board 2 via a printed wiring board fixing member.

FIG. 3 is a perspective view showing the back surface of the second printed wiring board. As shown in the figure, reference numeral 14 denotes a plurality of contact portions which are plated for rust prevention so as to come into contact with the protrusion 12 of the terminal 10 and to be supplied with signal data and a minute current.

FIG. 4 is a perspective view showing a state in which another first printed wiring board is accommodated adjacent to the first and second printed wiring boards. In this case, even if the first printed wiring boards 2 are accommodated in the cabinet 1 adjacent to each other, only the second printed wiring boards can be inserted and removed.

FIG. 5 is an enlarged perspective view of the printed wiring board fixing member viewed from the front side when the cabinet is housed. Reference numeral 15 is a printed wiring board holding member that reinforces when the second printed wiring board 3 is fixed, and 18 is a land portion provided on the first printed wiring board 2 and electrically connected to the terminal 10 and soldered. , 17 are fixing collars for fixing the terminal 10 to the guide member 11.

In the initial state of the guide member 11 (printed wiring board fixing member), a plurality of terminals 1 having inner ends are provided.
0 (not shown), but the first printed wiring board 2
When the guide member 11 (printed wiring board fixing member) is attached to the cabinet 1 depending on which surface (left or right) of the first printed board 2 is attached, the terminal fixed on the first printed wiring board 2 By leaving 10 and cutting the terminal 10 on the opposite side with a jig or the like, the parts can be shared so as not to get in the way.

FIG. 6 is an enlarged cross-sectional view of the main part of the printed wiring board fixing member viewed from the top when the cabinet is accommodated. 19 is a perspective view in which the end surface portion of the guide member 11 is cut obliquely so that the projection 12 is left. With that,
After inserting the second printed wiring board 3 along the guide member 11 (printed wiring board fixing member), the protrusion 12 is fitted and fixed in the fixing hole 13 provided on the second printed wiring board 3. It In this case, as shown in FIG.
Has resilience and spreads. The other protrusion 12 contracts because it is in contact with the contact portion 14. Further, when the second printed wiring board 3 is removed, the vicinity of the fixing hole 13 is pushed to the right by a finger so that the right side portion of the obliquely cut slope portion 19 of the guide member 11 (printed wiring board fixing member). Therefore, the second printed wiring board 3 is easily deformed and disengaged from the protrusions 12, and the second printed wiring board 3 can be pulled out in the front direction of the cabinet 1. One terminal 10 is provided on the upper part of the guide member 11. This is the second member on the guide member 11 (printed wiring board fixing member).
This is to prevent wobbling when the printed wiring board 3 is inserted and is similar to the other terminals 10.

FIG. 7 is a perspective view showing a method of holding the second printed wiring board 3 provided on the first printed wiring board 2. As shown in the cross-sectional view of FIG. 5, the notch 16 provided in the printed wiring board holding member 15 is pushed toward the terminal 10 from the outer peripheral direction (direction of arrow B) of the second printed wiring board 3. And fix it. The material should be insulative so that it will not short circuit even if it contacts other parts. In addition, by cutting the printed wiring board holding member 15 in advance, the printed wiring board holding member 15 is cut at a length corresponding to the interval (length of the terminal 10) when the second printed wiring board 3 is fixed to the first printed wiring board 2. Can handle.

As described above, according to this embodiment, since the guide member having the terminal having the conductivity and the restoring force at the tip is provided on the first printed wiring board, the second printed wiring is provided. It becomes easy to fix the board and guide it during insertion and removal.

[0027]

As is apparent from the above embodiments, according to the printed wiring board fixing member of the present invention, the conductive material is provided in the electronic device and when the first printed wiring board is accommodated adjacently. Since the connecting means having the property and the guide member having the insulating property are provided on the first printed wiring board, the mechanical connecting means (connector or the like) electrically connected to the first printed wiring board. If the user wants to remove the second printed wiring board provided via the connector or mount the second printed wiring board on the first printed wiring board, the first and second printed wiring boards are housed. Only the second printed wiring board can be attached / detached from the front surface portion of the electronic device regardless of the adjacent printed wiring board along the guide member having an insulating property. Further, since the projection is provided on the guide member and the hole to be fitted into the projection is provided on the second printed wiring board, the second printed wiring board can be easily fixed, and the second printed wiring board can be fixed against external force such as vibration. It can be prevented from coming off.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a printed wiring board fixing member according to an embodiment of the present invention is attached to a first printed wiring board.

FIG. 2 is a perspective view showing a state in which a second printed wiring board is fixed to the first printed wiring board via a printed wiring board fixing member.

FIG. 3 is a perspective view showing a back surface of a second printed wiring board.

FIG. 4 is a perspective view showing a state in which another first printed wiring board is accommodated adjacent to the first and second printed wiring boards.

FIG. 5 is an enlarged cross-sectional view of the printed wiring board fixing member as viewed from the front when the cabinet is housed.

FIG. 6 is an enlarged cross-sectional view of a main part of the same printed wiring board fixing member as seen from above when the cabinet is housed.

FIG. 7 is a perspective view showing a method of holding a second printed wiring board provided on the first printed wiring board.

FIG. 8 is a diagram showing a first example using a conventional printed wiring board fixing member.
Perspective view of the second printed wiring board fixed to the printed wiring board of FIG.

FIG. 9 is a perspective view showing a state in which a first printed wiring board to which a second printed wiring board is connected via a printed wiring board fixing member is accommodated in a cabinet.

FIG. 10 shows a state in which a first printed wiring board to which a second printed wiring board is connected via a printed wiring board fixing member is accommodated in a cabinet, and another first printed wiring board is accommodated further adjacently. Perspective view showing

[Explanation of symbols]

 10 terminal 11 guide member 12 protrusion

Claims (2)

[Claims] 1. A plurality of electrically conductive variable type mechanical connecting means having an insulating property on a first printed wiring board, and a plurality of insulating variable pairs holding the mechanical connecting means. A printed wiring board fixing member provided with the guide member. 2. Reinforcement of the connected second printed wiring board against vibration, external force, etc., according to the specifications of the second printed wiring board and the number of mechanical connecting means, and the length of the mechanical connecting means. The printed wiring board fixing member according to claim 1, further comprising a holding member having a structure capable of coping with the height.