JPH062770U - Mounting structure of printed wiring board - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a device casing in which a lower casing and an upper casing are slidably combined, and particularly, to a mounting structure of a printed wiring board housed in the device casing, mounted on the upper casing side. An object of the present invention is to facilitate the work of replacing a printed wiring board and prevent the printed wiring board from being damaged during replacement. [Structure] A frame-shaped plate 30 that connects a selected edge member 31 through a hinge 40 to a portion of the ceiling plate 21 of the upper housing 2 that is close to the base of the sliding motion, and a frame-shaped plate 30 by a screw means. A printed wiring board (25) to be mounted on the upper surface, and an attachment means (50) made up of a female member (51) and a male member (52) having a protruding portion that is removably engaged with a concave portion of the female member (51) are provided. One of 52 is fixed to the edge member 32 portion on the open side of the frame plate 30,
The other is fixed to the inner side of the ceiling plate 21, and the frame-shaped plate 30 is slidably mounted on the upper housing 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus housing in which a lower housing and an upper housing are slidably combined, and more particularly to a mounting structure of a printed wiring board housed in the apparatus housing.

In the operation panel of a repeater of a communication device, a box-shaped upper casing having an opening at the bottom is connected to a box-shaped lower casing having an opening at the top via a hinge, and the upper casing is moved upwards. It uses an equipment cabinet that can be opened and slid.

A desired operating element such as a key is arranged on the surface of the ceiling plate so that the ceiling plate of the upper casing is inclined forward and downward when the upper casing is closed. On the other hand, both upper and lower housings house device parts such as a printed wiring board having a relay function.

[0004]

[Prior art]

 A conventional printed wiring board mounting structure is shown in FIG. In FIG. 3, reference numeral 1 denotes a box-shaped lower housing having an open upper portion, and 2 denotes a box-shaped upper housing having an open lower portion. By connecting the rear side edge of the upper casing 2 to the rear side edge of the lower casing 1 via a hinge means (not shown), the upper casing is mounted on the lower casing 1 so that it can be slid upward and forward. is doing.

Since a find board (not shown) or the like is attached to the tabletop at the rear of the upper housing 2, the opening angle of the upper housing 2 is around 60 degrees. Further, the front side of the lower housing 1 and the front side of the upper housing 2 are connected to each other by a stay 5 which can be folded and stored in the housing so that the upper housing 2 is opened when the upper housing 2 is opened to the front opening. It is supported by stay 5 to prevent it from closing.

Four nut members 12 are arranged on the bottom plate 11 of the lower housing 1 by welding or the like, the printed wiring board 15 is placed on the nut members 12, and holes are provided at four corners of the printed wiring board 15. The printed wiring board 15 is fixed to the lower housing 1 by inserting a small screw 13 into 14 and screwing it into the nut member 12.

Further, four nut members 22 are arranged by welding or the like on the inside of the ceiling plate 21 of the upper housing 2, the printed wiring board 25 is placed on the nut members 22, and the printed wiring board 25 is Machined screws 23 are inserted into the holes 24 provided at the four corners and screwed to the nut member 22 to fix the printed wiring board 25 to the upper housing 2.

The printed wiring board 25 is electrically and mechanically connected to an operation element arranged on the front surface side of the ceiling board 21. Further, the printed wiring board 15 mounted on the lower housing 1 and the printed wiring board 25 mounted on the upper housing 2 are connected by a cable (not shown).

[0009]

[Problems to be solved by the device]

 As described above, the printed wiring board mounted in the device housing is often replaced for maintenance reasons.

On the other hand, the opening angle of the upper housing is limited by the stay so that it cannot be opened more than about 60 degrees as described above. Therefore, when the upper housing is opened, the distance between the lower side edge of the printed wiring board on the upper housing side and the lower housing is short. Therefore, there is a problem in that the operability of the driver for screwing the small screw for mounting the printed wiring board is poor and it takes time to replace the printed wiring board.

In addition, there is a problem that the driver may come off the head of the machine screw and damage the printed wiring board. The present invention was created in view of the above points, and provides a printed wiring board mounting structure in which the printed wiring board mounted on the upper housing side can be easily replaced and the printed wiring board is not damaged during replacement. Is intended.

[0012]

[Means for Solving the Problems]

 In order to achieve the above object, as shown in FIG. 1, the present invention connects a box-shaped upper housing 2 having an opening at the lower side to a box-shaped lower housing 1 having an opening at the upper side through hinge means. In the device casing in which the upper casing 2 is slidable, the selected edge member 31 portion of the frame-shaped plate 30 is located inside the ceiling plate 21 of the upper casing 2 at a position near the sliding base. , Via hinge 40.

An engaging means 50 including a female member 51 and a male member 52 having a protrusion that is removably engaged with a concave portion of the female member 51 is provided, and the female member 51 or the male member of the engaging means 50 is provided. One of 52 is fixed to the edge member 32 on the open side of the frame plate 30, and the other is fixed to the inside of the ceiling plate 21, and the frame plate 30 is slidably mounted on the ceiling plate 21. To do.

Then, the printed wiring board 25 is attached to the upper surface side of the frame-shaped board 30 by screw means.

[0015]

[Action]

 As described above, in the present invention, the frame-shaped plate is slidably attached to the upper housing, and the printed wiring board is mounted on the upper surface side of the frame-shaped plate.

When the printed wiring board is replaced, the frame is slid when the upper housing is opened and then the fastening means for fastening the printed wiring board to the ceiling board is released. Along with this, the printed wiring board is slid so that the head of the machine screw that attaches the printed wiring board to the frame-shaped plate faces upward.

Therefore, the screw can be easily screwed. Also, since the head of the machine screw is pointing upwards and is easy to see, the driver will not come off the head of the machine screw and damage the printed wiring board.

[0018]

【Example】

 Hereinafter, the present invention will be described in detail with reference to the drawings. The same reference numerals denote the same objects throughout the drawings.

FIG. 1 is a perspective view of an embodiment of the present invention, and FIG. 2 is a perspective view when a frame-shaped plate is opened. For convenience of illustration, the stay is omitted in FIG. In FIG. 1 and FIG. 2, the rear side edge of the box-shaped lower casing 1 having an opening at the upper side and the rear side edge of the box-shaped upper casing 2 having an opening at the lower side are provided through a hinge (not shown) or the like. By connecting them, the upper housing 2 is mounted on the lower housing 1 so that it can be slid upward and forward. Since a finding board (not shown) or the like is attached to the tabletop at the rear of the upper housing 2, the opening angle of the upper housing 2 is around 60 degrees.

Then, the front side of the lower housing 1 and the front side of the upper housing 2 are connected by a stay 5 which can be folded and accommodated in the housing, and when the upper housing 2 is opened to the front opening, the upper part is opened. The housing 5 is supported by the stay 5 so that the housing 2 does not close, and the upper housing 2 does not open more than about 60 degrees.

Four nut members 12 are arranged on the bottom plate 11 of the lower housing 1 by welding or the like, the printed wiring board 15 is placed on the nut members 12, and holes are provided at four corners of the printed wiring board 15. The printed wiring board 15 is fixed to the lower housing 1 by inserting a small screw 13 into 14 and screwing it into the nut member 12.

Reference numeral 30 is a frame-shaped plate made of aluminum or the like, which is similar to and larger than the printed wiring board 25 to be mounted on the upper housing 2, and machine screws 33 are screwed into the four corners of the frame-shaped board. A screw hole 34 is provided.

Reference numeral 50 is an engaging means composed of a female member 51 having a concave portion 51a and a male member 52 having a protruding portion 52a which is removably engaged with the concave portion 51a. One edge member 31 in the longitudinal direction of the frame-shaped plate 30 is connected to a position on the inner side of the ceiling plate 21 of the upper housing 2 near the base of the sliding movement via a hinge 40, and is parallel to the edge member 31. The male member 52 is fixed to the upper side (the side facing the ceiling plate 21 of the upper housing 2) of the other longitudinal edge member 32 facing each other.

A female member 51 is fixed to the ceiling plate 21 corresponding to the male member 52. On the other hand, the printed wiring board 25 is placed on the upper surface side of the frame-shaped board 30, and the machine screws 33 are inserted into the respective holes provided at the four corners of the printed wiring board 25 and the threaded portions are screwed into the screw holes 34. The printed wiring board 25 is firmly fixed to the frame-shaped board 30.

Therefore, when the printed wiring board 25 is replaced, as shown in FIG. 2, the upper casing is opened, and then the edge member 32 of the frame-shaped plate 30 is pulled toward the front side to make the female member 51 and the male member. Release the engagement with 52. Then, the edge member 32 to which the male member 52 of the frame-shaped plate 30 is attached is tilted to the front side to open the frame-shaped plate 30 with the hinge 40 as the axis.

As a result, the printed wiring board 25 is also slid so that the surface facing the ceiling board 21 faces upward. Therefore, the head of the machine screw 33 that attaches the printed wiring board 25 to the frame-shaped plate 30 is exposed upward.

Therefore, the driver can easily operate and the small screw 23 can be easily screwed. Further, since the head of the machine screw 33 can be visually observed, the driver does not come off the head of the machine screw, and the printed wiring board 25 is not damaged.

[0028]

[Effect of device]

 As described above, according to the present invention, when the printed wiring board that is housed and fixed inside the upper casing that is slidably mounted on the lower casing is attached and detached, the attaching and detaching work becomes easy.

Further, there is no risk of damaging the printed wiring board when the printed wiring board is attached or detached.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view when the frame-shaped plate is opened.

FIG. 3 is a perspective view of a conventional example.

[Explanation of symbols]

1 Lower case 2 Upper case 5 Stay 11 Bottom plate 12,22 Nut member 13,23,33
Machine screws 15,25 Printed wiring board 21 Ceiling board 30 Frame board 31,32
Edge member 40 Hinge 50 Engaging means 51 Female member 51a Recess 52 Male member 52a Projection

Claims (1)

[Scope of utility model registration request] 1. A box-shaped upper housing (2) having an opening at the bottom,
In a device casing in which a box-shaped lower casing (1) having an upper opening is connected through a hinge means and the upper casing (2) can be slid, a ceiling plate (of the upper casing (2) ( 21), the frame-shaped plate (30) connecting the selected edge member (31) through the hinge (40) to the location near the base of the sliding motion, and the frame-shaped plate (30) of the frame-shaped plate (30) by screwing. An engaging means (50) including a printed wiring board (25) to be mounted on the upper surface, a female member (51) and a male member (52) having a protrusion that is removably engaged with the concave portion of the female member (51). ), One of the female member (51) and the male member (52) is fixed to the edge member (32) on the open side of the frame plate (30), and the other is the ceiling plate. A printed wiring board mounting structure, characterized in that the frame-shaped board (30) is fixed to the inside of (21) and is slidably mounted on the upper housing (2).