JPH01200700A - Electronic apparatus casing - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to an electronic device housing housing an electronic device such as a printed circuit board therein, and particularly to an improvement in the structure so that various mounting modes can be easily adopted.

[Conventional technology]

2. Description of the Related Art Conventionally, there have been known casings for electronic devices such as industrial meters, as disclosed in, for example, Utility Model Publication No. 59-40799 T Electronic Devices proposed by the present applicant. This type of structure uses a box-shaped chassis formed by sheet metal processing, inside which components such as printed circuit boards are arranged according to the design of each device, and wiring is conducted between these components. . These electronic device casings are incorporated, for example, into what is called a main strike employing the unit accommodation mechanism j proposed by the present applicant in Utility Model Application Publication No. 58-184889. It is incorporated into a known cubicle, such as in Publication No. 54-22909 ``Casing for control console, etc.'', to constitute a control device.

[Problem to be solved by the invention]

By the way, when mounting a housing for electronic equipment, there are various methods such as wall mounting, rack mounting, and rail mounting. 9 to 11 are explanatory diagrams of conventional wall-mounted casings. In FIG. 9, the 1-shaped cross section is attached to the upper and lower walls of the housing 20, with the 10° portion fixed at one end, which has the drawback of increasing the outer diameter. In particular, as shown in Figure 10, D
For applications such as mounting on an IN rail, a recess 30 for DIN rail mounting is provided on the back surface of the housing 20, but in this case, the mounting portion 10° is unnecessary. FIG. 11 is a side view of the case where the external dimensions remain the same and the mounting angle is secured at 10 degrees, and tapered surfaces are formed on the upper and lower side surfaces of the housing. However, if a taper is secured to accommodate the driver, the area that can be accommodated will be significantly reduced if the printed circuit board is left rectangular, and if the printed circuit board is made trapezoidal, the burden on machining will increase. Therefore, it is possible to prepare electronic device casings that can be mounted on walls, rails, etc., but this would not be effective in mass production and would require complex management such as product arrangement and inventory management. The challenge was to invite them. In addition, as recent electronic device casings are becoming smaller,
This is partly due to the fact that it has become possible to provide the necessary support simply by fixing the back of the chassis, without having to consider moment balance as in the case of conventional rack mounting. The present invention solves these problems, and allows for wall mounting, rail mounting, and other mounting modes using a single type of casing, and also allows the printed circuit board accommodated inside the large area to be used for electronic equipment. The purpose is to provide a housing.

[Means to solve the problem]

To achieve such an object, the present invention has a casing having a substantially rectangular parallelepiped shape, and Mx portions with a cross section of ■ shape provided in the front-rear direction on both sides of the upper and lower side surfaces near the rear end. , a guide portion having a cross section of a square shape provided in the middle of these rail portions, and a concave notch at the rear side end portions of the left and right side surfaces. The mounting consists of a guide part whose side has a recessed part on the side surface that has approximately the same width as the width of the guide part and which engages with the rail part, and whose bottom surface slides in the front-rear direction of the top and bottom sides, and this guide part. It consists of a threaded portion having a through hole provided perpendicular to the sliding direction. In the case of wall mounting, the housing is mounted by fitting the guide part into the rail part located at the end of the back side and fixing the threaded part to the wall, and the concave notch engages with the rail. In addition, feature 7 is that the mounting piece is not attached to the housing. The fitting between the guide part and the rail part is achieved by the recesses provided one-on-one in the rail part on the upper and lower side surfaces, and the claw part provided on the sliding surface side of the mounting piece. When the recesses are engaged, the rail portion and the guide portion may be attached, and the edge of the rail portion and the screwing surface may substantially coincide with each other. The mounting piece having the claw portion includes a vertical positioning portion having a recess that engages with the rail portion, one end of which is fixed to the threaded portion in common, and the claw portion is formed at the other end. It is preferable to configure the vertical positioning part with a front and rear positioning part made of an independent beam material. Note that the engagement between the rail part and the guide part may be reversed, and the mounting direction for the mounting on the housing of one piece may be in the left-right direction of the housing, in which case the guide part may be replaced with A stopper surface and an insertion surface are used, and the positional relationship between the screwing part and the guide part is changed.

[Effect]

When mounting to a single casing, the mounting position is on the back side in the case of wall mounting, and is not attached in the case of rail mounting.The engagement of the rail part and guide part is sufficient to have the same width as the casing.
The housing can be housed in close contact with each other. There are two ways to fix the mounting piece to the casing: one that is attached to the front and rear of the casing, and one that is mounted to the left and right of the casing. The former case can be handled only in the longitudinal direction of the casing, so there is no need to consider the lateral direction. In the latter case, there is no problem in installing it as long as the pieces are attached in advance. The mounting plate may be fixed to the housing by screws, or by engaging the claws with the recesses.In this case, if the part with the claws is an independent beam, the part that engages with the rail will The opening is smaller and the deformation is larger than when it is integrated with the main body, making the installation process easier. Another method of fixing is to slide the guide part from the front side of the rail part, and attach a stopper surface that is shaped to stop at a position where the rear surface of the screwed part roughly matches the back surface of the casing. When provided, it may be provided on the side facing the front of the guide part, and when provided on the housing, it may be provided on the back side of the rail part, and the housing may be fixed by the wall and the stopper surface for wall mounting.

【Example】

The present invention will be explained below using the drawings. FIG. 1 is a perspective view showing an embodiment of the present invention.
In the figure, 10 is a mounting plate made of an elastic material such as epoxy resin, and 20 is a roughly rectangular parallelepiped-shaped housing made of an elastic material such as plastic or aluminum, in which a printed circuit board is housed. Reference numeral 30 denotes concave notches provided on the left and right side surfaces of the housing 20, which have a shape suitable for attachment to a DIN rail. Reference numeral 40 denotes a terminal board attached to the front side of the casing 20, to which signal lines for power supply and input/output necessary for operation inside the casing are connected. Reference numeral 50 denotes a door provided on the front surface of the housing 20, which also serves as a cover for the terminal board 40. These casings 20 are attached in close contact with each other in the left and right side directions. Note that the directions specific to the housing 20 are front, back, left, right, up and down in the illustrated axial direction. Figure 2 is an explanatory diagram of the installed state; (A) shows the mounting piece 10;
(B) shows the housing 2, 0, and the mounting piece 10 is attached to the housing 20 from the direction of arrow A. In the figure, 11 is a guide part that guides when moving on the upper and lower sides, is a threaded portion approximately perpendicular to the guide portion 11, and is used for fixing to a storage device such as a rack. Reference numeral 13 denotes a front-rear positioning portion that restricts the front-back movement of the upper and lower side surfaces. Reference numeral 21 denotes a rail section provided on both sides of the upper and lower side surfaces of the housing 20, and has a protrusion such as a shape facing inward on the vertical part of the cross-section ■ shape, and the direction of the protrusion is in the front-rear direction of the housing 20. The length is approximately the same as that of the guide portion 11,
It is provided near the end on the back side of the upper and lower side surfaces. Incidentally, it may be provided at the front side of the upper and lower side surfaces in order to cope with rack installation. Reference numeral 22 denotes a guide part with a cross section of a ■ shape, which is provided in the middle of the rail part 21, and is provided in the front and back direction of the housing 20. Basically, it has the same shape as the rail portion 21 without the protrusion. Reference numeral 23 denotes a rectangular or round shaped recess provided one-on-one with the rail portion 21, which may be a through hole when the housing 20 is made of a thin member, and engages with the front-rear positioning portion 13. In order to facilitate the attachment and detachment of the front-rear positioning portion 13, the engagement relationship may be such that there is sufficient room in the left-right direction and that the positioning can be properly performed in the front-rear direction. They may be engaged to ensure positioning. Next, details will be explained. The guide part 11 is the rail part 2
1, and a corner cut portion 1 with a radius R provided at the tip to facilitate insertion into the rail portion 21.
1b, and a stopper surface 11c provided subsequent to the sliding portion 11a that comes into contact with the end surface of the rail portion 21 to suppress movement of the guide portion 11. In addition, if the recessed part 23 is to be properly engaged in the front and back directions, the sliding part 11a may be extended as it is without providing the stopper surface 11c. The seat portion 1 faces the front and back direction of the housing 20 at
2a, and a through hole 12b for inserting a screw provided at the center of the seat portion 12a.The front and rear positioning portion 13 includes a beam portion 13a fixed with a threaded portion 12 in common with the guide portion 11;
It consists of claw portions 13b provided on the upper and lower side surfaces of the beam portion 13a, and a lever portion 13c provided at the tip of the beam portion 13a, the thickness of which gradually decreases in a wedge shape. The rail portion 21 on the back side has a back surface 21a having the same plane as the back surface of the housing 20, and an end surface 21 of the guide portion 221Pj.
b, and a corner cut portion 21c with a radius R is provided at the corner of the end surface 21b on the guide portion 11 insertion side. The operation of the device configured in this manner will be described next. Third
The figure is a sectional view of the main parts of the installation state of the mounting piece 10 and the case 20, where (A) is the front and rear positioning part 13, and (8) is the guide part 1.
1 in the front-rear direction 2 (also the longitudinal direction of the upper and lower side surfaces). When the guide portion 11 is moved along the rail portion 21, the claw portion 13b is press-fitted at the position of the recess 23. Since the beam part 13a is separate from the guide part 11, its rigidity is low. Therefore, by operating the lever part 13c, the engagement between the claw part 13b and the recessed part 23 is released, and the threaded part 1 can be easily removed.
2, it can be removed from the rail section 21. Since the guide portion 11 and the rail portion 21 are in an interference fit relationship, the mounting piece 10 is prevented from moving in the vertical and horizontal directions of the housing 20. (Modified embodiment in which mounting is done using pieces and rail parts) FIG. 4 is a perspective view of a first modified embodiment of the present invention. Mount the piece 10 in the direction of arrow C with respect to the housing 20, that is, on the housing 2.
It is designed to be installed from the left and right directions of the 0. This is suitable when the width of the casing 20 is suitable for screwing. In FIG. 4, parts having the same functions as those in FIG. 2 are given the same reference numerals and their explanations will be omitted. In the figure, reference numeral 14 denotes a threaded part provided along the longitudinal direction of the guide part 11, which includes a seat part 14a with a width equal to or narrower than the width of the housing 20, a through hole 14b into which a screw is inserted, and a back side. It consists of a back surface 14C1 that is parallel to the seat surface 14 that forms approximately the same surface as the back surface of the housing 20 when mounted on the rail section 24 of the housing 20. Reference numeral 24 denotes a rail section provided on both sides of the upper and lower sides of the housing 20, and has a protrusion such as an F or ) shape facing inward on the vertical part of the U-shaped cross section, and the direction of the protrusion is in the left-right direction of the housing 20. The guide portion 11 has approximately the same length as the guide portion 11 and is narrower than the upper and lower side surfaces, and is provided at at least two positions near the end on the back side and at a position on the front side of the upper and lower side surfaces. Reference numeral 25 denotes a stopper surface provided at one end of the left and right side surfaces of the rail portion 24, which is in the form of a wall that closes off the rail portion 24 here. Reference numeral 26 denotes an insertion surface provided on the opposite side to the stopper surface 25, into which the sliding portion 11a of the guide portion 11 is inserted, and the stopper surface 11d on the opposite side to the side where the claw portion 13b of the guide portion 11 is provided becomes a stopper. Excessive movement is restricted by contacting the surface 25. FIG. 5 is an explanatory diagram of a second modified embodiment of the present invention, (^)
CB) shows the mounting piece 10, and CB) shows the housing 20. Basically, the installation shown in FIG. 2 is obtained by removing the longitudinal positioning portion 13 from the piece 10. To explain only the reference numerals that are different from those in FIG. 2, a stopper surface 14 that comes into contact with the end surface 21b of the rail section 21 to suppress the movement of the guide section 11 is provided, and this width is the same as that of the guide section 11 and the guide section 22 It has the width necessary to move it along the curve (it's about as narrow as a melon). In such a structure, the piece 10 is installed by inserting it into the rail portion 21 in the direction of arrow B. Then, the installation in FIG. 6 will be as shown in the explanatory diagram of the state. Now, for installation, the distance from the stopper surface 14 of the piece 10 to the back surface of the threaded part 12 is 11, and the end face 21a of the rail part 21 is installed. The interval between 21b is 12. ! When 1 and 12 are equal, when the piece 10 is screwed onto a wall or the like, the back of the housing 20 will fit snugly against the wall, and no looseness will occur, resulting in the most preferable mounting state. When 11 is larger than 12, a gap 1) (=471-12) between the casing 20 and the wall as shown in the figure occurs. Therefore, backlash will occur between the casing 20 and the wall, but this is not a problem as long as it is sufficiently small compared to the distance between the upper and lower side surfaces. ! If 1 is smaller than 12, on the other hand, a gap 1)<-12-21) will occur between the piece 10 and the wall. However, if the gap is small, the mounting piece 10 will be elastically deformed to reduce the gap, and a tightening force will act on the housing 20 as an axial force, but if buckling is taken into consideration, the gap will be small. No problem. FIG. 7 is an explanatory diagram of the third modified embodiment, in which (^) is a front perspective view of the mounting piece 10, (B) is a perspective view of the seat side of the mounting piece 10, and (C) is a casing. 20 is shown. In the figure, reference numeral 15 denotes a guide section provided perpendicularly to the threaded section 12, and a projection 15a having a shape of F, ), etc., facing inward on the vertical part of the cross section, on the side that slides along the upper and lower side surfaces. , a stopper surface 15b is provided on the edge opposite to the threaded portion 12. Reference numeral 27 denotes a shaped rail portion provided on the rear side of the upper and lower side surfaces of the housing 20, and includes a groove 27a that engages with the protrusion 15a, and a stopper surface 2 that is in contact with the stopper surface 15a provided on the front side.
7b. In this kind of installation, the piece 10 is attached to the stopper surface 27 of the rail part 27.
Insert from the b side, the groove 27a and the protrusion 15a slide,
The stopper surface 15b and the stopper surface 27b are brought into contact and positioned. Since the stopper surface 15b is on the opposite side from the screw-fitting part 12, the back surface of the screw-fitting part 12 and the back surface of the casing 20 coincide with each other when positioned. FIG. 8 is a perspective view of the main part of the fourth modified embodiment of the present invention, (
^) shows the mounting piece 10, and (B) shows the housing 20. Basically, the installation shown in Figure 2 is from piece 10 to stopper side 11c.
The stopper surface is removed and the stopper surface is moved to the rail portion 21. In the figure, the threaded portion 12 side of the sliding portion 11a has been removed. A stopper surface 21d is provided on the back side of the rail portion 21, and the distance from the back surface is made to match the length of the removed sliding portion 11a. In this way, when the piece 10 is not attached to the rail part 21, the back surfaces are aligned, and the screwed part 12
When it is fixed to the wall, there are no gaps and it can be fixed securely. In the above embodiment, the mounting piece 10 and the casing 20 are fixed using the front and rear positioning part 13 and the recess 23, and in the case of wall mounting, the casing 20 is fixed between the wall and the stopper surface. Although shown, the protrusion of the rail portion 21 may be tapered, and the sliding portion 11a may be made into a tapered shape adapted to the tapered shape and fixed by a wedge action.

【Effect of the invention】

As explained above, the present invention has the following effects. (2) Since the housing 20 is provided with the rail portion 21 and the mounting piece 10 can be attached or removed depending on the mounting mode, various types of mounting B can be handled. ■ The housing 20 remains a rectangular parallelepiped, and if necessary, it can be installed on one side.
0 is installed, the printed circuit board accommodation efficiency is good. (2) If the front and rear positioning parts 13 and the recesses 23 are used for fixing as in the embodiment, assembly work can be carried out without a screwing tool, and no rattling will occur even if there is no precise fitting relationship. ■ If the wall and the stopper surface are used to fix the wall as in the embodiment, the assembly work can be done without a screwing tool, and the precise fitting relationship prevents rattling.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the structure showing an embodiment of the present invention, FIG. 2 is an explanatory diagram of the installed state, FIG. 3 is a cross-sectional view of the main part of the mounting state of the piece 10 and the casing 20, and FIG. Figure 5 is a perspective view of the first modified embodiment of the present invention, Figure 5 is a perspective view of the second modified embodiment of the present invention, Figure 6 is an explanatory diagram of the wall mounting state, and Figure 7 is the leather 3 A perspective view of a modified embodiment. FIG. 8 is a perspective view of a fourth modified embodiment. 9 to 11 are explanatory diagrams of conventional wall-mounted casings. 10...Installation is one piece, 11...Guide part, 12...
Threaded part, 13... Front and rear positioning part, 20... Housing,
21゜24...Rail part, 22...Guide part, 23.
... recess, 25 ... stopper surface, 26 ... insertion surface. Z Figure mark 3←〆 -〆- Figure 1/Figure 0, Figure 0

Claims (6)

[Claims] (1) It is roughly rectangular parallelepiped in shape, and the rail part has protrusions such as a Γ and ■ shape that face inward on the vertical part of the cross-section ■ shape provided on both sides of the upper and lower sides near the end of the back side in the front-rear direction. , a guide part with a cross-section of ■ shape provided in the middle of these rail parts, a housing having a concave-shaped notch provided in the rear open end of the left and right sides, and a housing having a width approximately the same as the width of the guide part. A guide part that has a recessed part on the side surface that engages with the rail part and whose bottom surface slides in the front-rear direction of the upper and lower side faces, and a threaded part that has a through hole provided perpendicular to the sliding direction of the guide part. In the case of wall mounting, the housing is attached by fitting the guide part to the rail part located at the end of the back side and fixing the screw part to the wall. 1. A casing for an electronic device, wherein when mounting on a rail, the casing is mounted by engaging the rail and the notch, and the mounting piece is not attached to the casing. (2) It is roughly rectangular parallelepiped in shape, and the rail part has protrusions in the shape of Γ and ■ that face inward on the vertical portions of the cross section, which are provided in the left-right direction near the end on the back side on both sides of the upper and lower side surfaces. , a stopper surface provided on one side of the left and right side surfaces of this rail section, an insertion surface of the cross section of the rail section provided on the other side of the left and right sides of this rail section, and a stopper surface provided on the rear side end of the left and right side surfaces. a housing having a concave cutout; a guide portion having a recess on a side surface that has a width approximately the same as the width of the guide portion and that engages with the rail portion, and a bottom surface of which slides in the left-right direction of the upper and lower side surfaces; and a mounting piece consisting of a threaded part having a through hole provided in a plane parallel to the sliding direction and perpendicular to the bottom surface, and in the case of wall mounting, the guide part is attached to the back end. Attach the casing by fitting it into the rail part located in the section and fixing the threaded part to the wall, and when installing it to the rail in the shape of ■, engage the rail and the notch to attach the casing. A casing for an electronic device, wherein the mounting piece is attached to the casing and the mounting piece is not attached to the casing. (3) The fitting between the casing and the mounting piece according to claim 1 or 2 is achieved through recesses provided one-on-one in the rail portions of the upper and lower side surfaces and claws provided on the sliding surface side of the mounting piece. When the claw part and the recessed part engage, the rail part and the guide part are attached, and when it is attached to the rail part on the back side, the back side surface of the screwing surface and the back side of the casing are attached. A casing for an electronic device characterized by substantially matching each other. (4) The mounting piece according to claim 3 includes a vertical positioning part having a recessed part that engages with the rail part, and one end of the vertical positioning part and the vertical positioning part is commonly fixed on the threaded part side, and the claw part is formed at the other end. A casing for an electronic device, comprising a front-rear positioning section made of a beam material independent of the vertical positioning section. (5) In the case of wall mounting, the fitting of the housing and the mounting piece according to claim 1 is achieved by sliding the guide part from the front side of the rail part so that the back side surface of the screwing part is aligned with the housing. A stopper surface shaped to stop at a position that roughly coincides with the back surface of the mounting plate should be provided on the side facing the front of the guide section when it is provided on the mounting piece, or on the back side of the rail section when it is provided on the casing. A casing for an electronic device characterized by fixing the casing with a hand. (6) The rail portion and the guide portion according to claims 1 to 5 include a rail portion having a Γ-shaped depression facing inward in the vertical portion of the cross-sectional shape, and a projection portion that engages with the rail portion. A casing for an electronic device, characterized by comprising a guide portion on a side surface.