JPH11164331A - Mount structure for board - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply replace a terminal board in a control box where lots of terminal boards are placed removably. SOLUTION: Upper lower brackets 28, 29 with bents 28a, 29a formed respectively to them are removably fitted to a support panel 12 of a control box with screws 30, 33, and slits 31 are formed to the bents 28a, 29a of the brackets 28, 29. The slits 31 of the upper lower brackets 28, 29 are inserted to upper lower corners A2 of terminal boards A to support the terminal boards A so that the terminal boards A are not fallen off toward front and in vertical directions. Since a terminal board A is removed while connecting a cable C' to a terminal B, the terminal board A is simply replaced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a rectangular substrate for a circuit, for example, when a terminal substrate is mounted on a control box or the like.

[0002]

2. Description of the Related Art For example, in various control systems such as a building security system, a storage box, an arithmetic circuit, a control circuit, and the like, which are central to the system, are generally provided in a control box. In this case, a terminal board to which a large number of terminals for cable connection are attached is often used.

That is, as shown in FIG. 12, a terminal board A is formed in a rectangular shape by plastic or ceramic, and a terminal B having a cable connection hole B1 formed on one surface thereof is opened in the cable connection hole B1. A large number of terminal boards A are arranged side by side in such a manner that the wide surfaces of the terminal boards A stand upright so that the wide surface thereof is orthogonal to the front surface of the support panel 41 in the control box 40. Cable C between any terminal B
To be able to connect.

[0004] As shown in FIG. 13, a terminal board A has a large number of connector pins D projecting rearward. The connector pins D are connected to pins of a circuit board 42 attached to a support panel 41 of a control box 40. Although the terminal board A and the circuit board 42 are electrically connected by being inserted into the holes, the weight of the terminal board A cannot be supported by the connector pins D alone. It is also necessary to hold the terminal board A so that it cannot be pulled out.

In order to support the terminal board A, conventionally, a cover plate 43 is arranged on the front surface of the terminal group, and the cover plate 43 has a projection B2 formed on the front surface of the terminal B.
Are formed in a number of square holes 44 into which
The cover 43 is screwed to the support panel 41 or the like in a state where the cover 43 is fitted to the projection B2.

[0006]

By the way, all the terminal boards A have to be replaced or removed for inspection or failure, or all the terminal boards A have to be inspected or replaced for the circuit board 42. May need to be removed. However, the cover plate 43
In the mounting structure in which the terminal B is held down and fixed, the cables C must be removed from all the terminals B in order to remove the cover board 43 and remove the terminal board A. There is a problem that it takes a lot of time for maintenance and inspection.

An object of the present invention is to solve this problem.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a terminal in which a large number of terminals having cable connection holes facing forward are aligned and mounted at a position in front of a support member such as a support panel in a control box. When mounting a rectangular substrate such as a substrate such that the wide surface of the substrate is substantially perpendicular to the front surface of the support member, a `` part of the support member located at both ends of the front edge of the substrate, The brackets are removably attached by screwing or the like, and the slits formed in both brackets are fitted into the corners of the board located at both ends of the front edge, whereby the board is oriented in the forward direction and the length of the front edge. Hold in the direction so that it cannot be pulled out. "

[0009] In this case, the substrates may be arranged side by side in an upright state, or may be arranged in multiple stages while being laid horizontally. In the former arrangement, the brackets are arranged on the upper and lower sides of the board, and in the latter arrangement, the brackets are arranged on the left and right sides of the board.

[0010]

According to this structure, when used for mounting a terminal board, for example, the pair of brackets are fitted only to the ends of the terminal board. You can remove the bracket without it. Therefore, it is not necessary to remove the cables from the terminals one by one when removing the terminal board. In other words, the terminal board can be removed with the cable connected to the terminal.

Therefore, according to the present invention, even for a board to which a cable is connected like a terminal, the work efficiency of replacement, maintenance and inspection, etc. can be significantly improved, and there is no need to reconnect the cable. There is no connection error problem. Also, since the bracket does not cover the entire front surface of the board group, heat dissipation is good.

[0012]

Next, an embodiment in which the present invention is applied to the mounting of a terminal board will be described with reference to the drawings (FIGS. 1 to 11). FIG. 1 is a perspective view of the control box 1, and FIG. 2 is an isolated plan sectional view of the control box 1. As shown in these figures, the control box 1 has a main body 2 opened forward and a horizontally rotatable door. The power supply device 4 is provided at the lower end of the inside of the main body 2, and the radiating fan 5 is provided at the upper end. On the other hand, a heat radiating port 6 is provided at the upper end and the lower end of the door 3, and a lock 7 is provided at a free end of the door 3.

An appropriate number of cord insertion holes 8 covered with an elastic film such as a rubber plate are provided on the upper surface of the main body 2 so that the cords C 'can be pulled out from the cord insertion holes 8 to the outside.
For example, as shown in FIG. 2, an opening edge 2 a of the main body 2 is bent and formed in a U-shape in a plan view over the entire circumference, and a front frame 9 constituting a front surface of the main body 2 is formed on the opening edge 2 a.
And the door 3 is attached to the front frame 9 with a hinge (not shown).

FIG. 3 is a front view with the door 3 opened, and FIG.
4 is a sectional view taken along the line IV-IV in FIG. 3. As shown in these figures, a base plate 10 is attached to a back plate 2 b of the main body 2 with screws 11. A support panel 12 as an example of the support member described above is attached, and a circuit board 13 and a large number of terminal boards A are attached to the support panel 12.

The support panel 12 is attached to the base plate 10 via a pair of upper and lower hinges 15 and locking means 16 so as to be horizontally rotatable. As shown in FIG. Move. This point will be described with reference to the separated perspective view of FIG. First U-shaped brackets 17 are fixed to the side surfaces of the upper and lower ends of the support panel 12 so as to protrude forward, respectively, while the base plate 10 is provided with a second bracket 17 that is configured to cover the first bracket 17. The bracket 18 is fixed, and these first
The hinge panel 15 is fixed between the distal ends of the second brackets 18 by an appropriate means such as screwing, so that the support panel 12 is horizontally rotatable. Further, between the upper end of the support panel 12 and the base plate 10, a hinge type locking means 16 is attached via a third bracket 19 and a fourth bracket 20.

The locking means 16 includes a support panel as shown in FIG.
When the door 12 is fully opened, the stay 16a is in a stretched state and is maintained in this state. When a force of a certain degree or more is applied, the stay 16a rotates and the support panel 12 can be closed. By providing the locking means 16 in this way, the support panel 12 can be held in an open state, so that maintenance and inspection work is easy.

Further, since the hinge 15 is attached between the tip of the first bracket 17 and the tip of the second bracket 18, the terminal can be opened when the support panel 12 is open as shown in FIG. Since a gap can be opened between the substrate A and the front frame 9, the support panel 12 can be opened and closed while the cable C is connected to the terminal 21. Further, when the support panel 12 is opened, the support panel 12 is in a state of popping out to the front, so that operations such as maintenance and inspection can be performed more easily.

As shown in FIG. 4 and FIG. 7, stoppers 21 are provided on the base plate 10 at upper and lower ends of the free end of the support panel 12 in a closed state, and fitted to the free end of the support panel 12. The bolt 22 is screwed into the female screw hole 23 provided in the stopper 21 from the lateral direction, so that the support panel 12 is
Is kept closed. The bolt 22 is provided with a knurled knob.

As shown in FIGS. 4, 5, and 7, a fifth bracket 24 extending horizontally is attached to the upper end of the support panel 12.
A limit switch 25 is provided at the end of the fifth bracket 24 to contact the back surface of the door 3 in a closed state, so that it is possible to detect that the door 3 is opened. For example, as shown in FIG. 4, the front frame 9 is detachably fixed to the main body 2 with screws 26. FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 3, and as shown in this figure, the power supply device 4 includes a bottom plate detachably mounted on a front frame 9 and a base plate 10.
27.

9 to 11 are perspective views showing a support structure of the terminal board A. As shown in these figures, a cable connection hole B1 is provided on one side (or both sides) of each terminal board A so as to face forward. A large number of open terminals B are mounted in a vertically arranged state, and a cable C is connected between arbitrary terminals B. In the present embodiment, the terminal board group B 'is arranged in a pair of upper and lower terminals, and these terminal board groups B' are the upper end of the terminal board group B 'located at the upper stage and the terminal board group B' located at the lower stage. End bracket 28 arranged at the lower end, and upper and lower terminal board group B '
It is supported by an intermediate bracket 29 disposed between the two.
The end bracket 28 is detachably attached to the support panel 12 with a screw 30. A U-shaped bent portion 28a is formed at the end of the end bracket 28, and each terminal board A is formed on the bent portion 28a.
The corner portion A2 located at the end of the front end edge A1 forms a slit 31 that fits forward and cannot move up and down.

On the other hand, the intermediate bracket 29 has a substantially C-shaped side surface with a bent portion 29a formed vertically, and the intermediate bracket 29 has an end portion of the front edge A1 of the terminal board A at the vertically bent portion 29a. Corner A2 located at
Are formed with a large number of slits 31 which are fitted forward and upward and downward, respectively, so that they cannot be pulled out. The intermediate bracket 29 is supported by a support panel (supporter) 32 having a substantially C-shape in plan view.
It is attached to 12. This is for facilitating attachment and detachment of the intermediate bracket 29 by attaching and detaching the screw 30 to and from the support beam 32 (when the intermediate bracket 29 is directly attached to the support panel 12, a finger is inserted into a narrow portion and the screw is inserted. It is difficult to work because you have to keep 30).

It should be noted that the same bracket as the end bracket 28 may be used instead of the intermediate bracket 29 having a C-shape in side view.
The end bracket 28 may be connected vertically symmetrically. Further, the end bracket 28 may be attached to the support beam 32. Further, instead of the support beam 32, a bar having a female screw hole may be used. Although not shown in the figure, a large number of connector pins D are projected rearward on each terminal board A in the same manner as in FIG. 13, and these connector pins D are arranged behind each terminal board group B ′. It is inserted into the circuit board 13.

In the above configuration, when the terminal board A is to be replaced or maintained or inspected, or the specific or all of the terminal boards A are to be removed for the replacement or inspection of the circuit board 13 or the like, the end bracket 28 and the intermediate bracket 29 are used. After pulling out the terminal board A, the terminal board A can be pulled forward to pull out the connector pin D from the circuit board 13, and it is not necessary to remove the cable C one by one as in the conventional case. Work can be performed efficiently. In addition, heat dissipation is good.

In the present embodiment, as can be easily understood from FIG. 2, for example, the base plate 10 is formed in such a size that it can be freely fitted to and removed from the main body 2 when the front frame 9 is removed. In this configuration, since the members such as the support panel 12 and the devices and instruments can be attached to the base plate 10 in advance while being attached to the base plate 10, there is an advantage that the assembling work of the control box 1 can be extremely simplified (the base plate 10).
If 10 is larger than the opening of the main body 2, the base plate 10 must first be mounted on the main body 2, and then various members, devices and instruments must be mounted on the base plate 10 inside the narrow main body 2. The work is troublesome).

In particular, even when the support panel 12 is mounted on the base plate 10 so as to be horizontally rotatable, the support panel 12 can be mounted on the main body 2 in a state where all the members are assembled in the base plate 10 in advance, so that maintenance is easy. Although the control box 1 is used, assembly work, maintenance and inspection with the base plate 10 removed, and the like are easy. In the present embodiment, the brackets 28 and 29 for attaching the terminal board are made of a metal plate, but may be made of a synthetic resin or the like, or the brackets 28 and 29 may be in a block shape. Also, the brackets 28 and 29 are
The terminal board A may be attached to a frame, for example (the point is that the terminal board A can be held). Further, the present invention can be widely applied not only to mounting of a terminal board but also to mounting of a board such as a circuit board.

[Brief description of the drawings]

FIG. 1 is a perspective view of a control box.

FIG. 2 is an exploded plan sectional view of the control box.

FIG. 3 is a front view of the control box with a door omitted.

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3 with the door closed.

FIG. 5 is a view showing a state where a door and a support panel are opened.

FIG. 6 is an exploded perspective view showing a mounting state of a support panel.

FIG. 7 is a view showing locking means of a support panel.

FIG. 8 is a sectional view taken along line VIII-VIII of FIG. 3;

FIG. 9 is an exploded perspective view showing support means for the terminal board.

FIG. 10 is an exploded perspective view showing support means for the terminal board.

FIG. 11 is a perspective view showing support means for the terminal board.

FIG. 12 is a diagram showing a conventional technique.

FIG. 13 is a diagram showing a conventional technique.

[Explanation of symbols]

 A Terminal board B Terminal C Cable for connection between terminals 1 Control box 2 Main body 9 Front frame 10 Base plate 12 Support panel 15 Hinge 16 Lock means 28 End bracket 29 Intermediate bracket 30,33 Screw 31 Slit 32 Support beam

Claims (1)

[Claims] 1. A rectangular board such as a terminal board in which a large number of terminals having cable connection holes opening forward are aligned and mounted on a front portion of a support member such as a support panel in a control box. Is a structure that is mounted so as to be substantially orthogonal to the front surface of the support member, and a pair of brackets are removably mounted to the portions of the support member located at both ends of the front end edge of the substrate by screwing or the like, Slits formed in both brackets,
A mounting structure for a substrate, characterized in that the substrate is held in a forward direction and in a longitudinal direction of the front edge by being fitted into corner portions of the substrate located at both ends of a front edge thereof.