JPH0945204A - Housing structure for relay - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely operate a relay. SOLUTION: Housing structure for a relay is equipped with a box-shaped case 1, a relay 4, and printed boards 2 and 3 which are accommodated in the inner space of the case 4 together with the relay in condition that the relay 4 is arranged and are connected with outside of the case 1 through cables 5 and 6. The printed boards 2 and 3 are directly soldered to the cables 5 and 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for accommodating a relay arranged on a printed circuit board.

[0002]

2. Description of the Related Art Conventionally, as a housing structure of this type of relay, there is one shown in FIG. This is a box-shaped case
A, relay B, and relay B with relay B installed
In addition, the printed circuit board D is housed in the inner space of the case A and is connected to the outside of the case A via the electric wire C.

Specifically, the case A has an opening on one side.
Box-shaped body A₁And cover the opening of its body A.
Cover A that is capped and screwed₂Consists of cover
A₂Is the body A₁It has a box-like shape and a rectangular bottom and
And has a side wall around the bottom. The bottom of this cover
On the outer surface of the part, the terminal arrangement part A_Three, A _Four
Are provided respectively, and the terminal arrangement portion A on one end side is provided._ThreeTo multiple
The transmission signal terminal E is the_FourAt the output end
Each child F is arranged. This multiplex transmission signal terminal
E is the terminal board E₁And screw E₂It is composed of Terminal board
E₁Is formed into an L shape by one piece and the other piece, and
A screw is screwed into a screw hole formed in the one piece. Come out again
Like the multiplex transmission signal terminal E, the output terminal F is also L-shaped.
Made terminal board F₁And screw F₂It is composed of

The printed circuit board D is the first printed circuit board D ₁
And a second printed circuit board D ₂ connected to the first printed circuit board D ₁ by a tape wire G ₁ . The first printed circuit board D ₁ is received indicator LED or the like is disposed, by being screwed to the cover A _2, is accommodated in the inner space of the cover A _2, the one end side of the cover A ₂ terminal The multiplex transmission signal terminal E arranged in the arrangement portion A ₃ is connected to the other piece of the terminal plate E ₁ by soldering. That is, this first printed circuit board D ₁
Is connected to the outside of the case A via an electric wire C ₁ screwed to the terminal plate E ₁ of the multiplex transmission signal terminal E. Also, the second
The printed circuit board D _{2 of this} is connected by soldering to the other side of the terminal plate F ₁ of the output terminal F disposed on the terminal arrangement portion A ₄ on the other end side of the cover A ₂ where the relay B is disposed. To be done. That is,
The second printed circuit board D ₂ is connected to the outside of the case A via an electric wire C ₂ screwed to the terminal plate F ₁ of the output terminal F ₁ .

[0005]

In the conventional relay housing structure described above, when installed in a place with relatively high humidity such as a pole for outdoor lighting or a place where rainwater is directly applied, the thread groove is formed. Since the vicinity of the screw holes of the terminal boards E ₁ and F ₁ that have been heated and have reduced corrosion resistance when the
The wires C ₁ and C ₂ screwed to the terminal boards E ₁ and F ₁ are more likely to corrode, increasing the contact resistance between the wires C ₁ and C ₂ and the terminal boards E ₁ and F _{1 The} relay B arranged on the _second printed circuit board D ₂ connected via ₂ becomes difficult to operate normally. If this happens, this relay B may not operate at all, unlike a manual switch that allows the operator to devise and operate it appropriately even if it becomes difficult to operate.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a relay housing structure in which a relay can operate reliably.

[0007]

In order to solve the above-mentioned problems, according to a first aspect of the present invention, a box-shaped case, a relay, and a relay are arranged in an inner space of the case together with the relay. In a relay housing structure including a printed circuit board that is housed and connected to the outside of the case via an electric wire, the printed circuit board is directly soldered to the electric wire.

According to a second aspect of the present invention, in the first aspect of the present invention, the relay body is hermetically sealed in an outer shell thereof, and the inner space has the relay and the relay body. A filling member made of a resin material is filled between the printed board and the inner surface of the case.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
It will be described below based on 16. This relay housing structure includes a case 1, a first printed circuit board 2, a second printed circuit board 3, a relay 4, a signal line side electric wire 5, a load side electric wire 6, a tape electric wire 7, a filling member 8, a mounting plate 9, And a relay built-in type terminal unit (10).

The case 1 comprises a body 11 and a case 12. The body 11 is made of a resin material and has a substantially rectangular opening 11.
It has an a and a bottom portion 11b, and is formed in a substantially box-like shape with the size of one of the distribution board agreement size modules. This body 11
On a pair of inner side surfaces facing each other in the longitudinal direction, a pair of ridges 11c parallel to the direction from the opening 11a to the bottom 11b are provided, and a groove 11d is formed between the ridges 11c. . The cover 12 is capped so as to cover the opening 11a of the body 11, is formed in a substantially rectangular plate shape, and has cutouts 12a at both end corners in the longitudinal direction thereof. The protruding portion between the notches 12a is an engaging piece 12b that engages with an engaging hole 11e provided near the protruding portion 11c of the body 11, and the windows 12c and 12d are formed in the central portion.
Is provided.

The first printed circuit board 2 is formed in a substantially rectangular shape, and one end in the longitudinal direction thereof has an address setting switch 21 having six DIP switches 21a and a load number having two DIP switches 22a. Setting switch 22
Etc., and cover the other end and the outside of the case 1
The signal line side electric wire 5 led out through the notch 12a is connected by soldering.

The second printed circuit board 3 is formed in a substantially rectangular shape, and the relay 4 and the like are arranged at one end in the short side direction, and the other end is formed by the first printed circuit board 2 and the tape electric wire 7. To be connected. Also, this second printed circuit board 3
One end corner portion in the longitudinal direction and the load-side electric wire 6 led out to the outside of the case 1 through the notch 12a of the cover 12 are connected by soldering.

The relay 4 is a so-called hermetically sealed relay in which a relay body (not shown) is sealed inside the outer shell 4a.

Next, a procedure for housing the relay 4 in the case 1 will be described. Both longitudinal ends of the second printed circuit board 3 are inserted and fixed in the groove 11d of the body 11, and the first printed circuit board 2 connected to the second printed circuit board 3 with the tape electric wire 7 is screwed to the body 11 as appropriate. In the state
The inside of the body 11 is filled with a filling member 8 of epoxy resin or the like, and the connection portion between the first printed circuit board 2 and the signal line side electric wire 5 by soldering and the second printed circuit board 3 and the load side electric wire 6 are connected. The connection part by soldering is hermetically sealed.
Then, when the cover 12 is capped from the side of the opening 11a and the engaging piece 12b of the cover 12 is engaged with the engaging hole 11e of the body 11 to cover the opening 11a, the relay 4 becomes A body 11 and a cover together with the first and second printed circuit boards 2 and 3.
It will be accommodated in the inner space 13 surrounded by 12. At this time, the six DIP switches 21a and the two DIP switches 22 of the address setting switch 21 and the load number setting switch 22 arranged on the first printed board 2 are arranged.
A is exposed from the windows 12c and 12d of the cover 12 and can be operated.

And, the accommodating structure of this relay is composed of the body
Mounted on a pole for outdoor lighting through a mounting plate 9 provided with locking parts 9a, 9b that lock with locked parts 11f, 11g provided on the outer surfaces at both longitudinal ends of 11, respectively. It is attached to a storage box to be worn.

Next, the state in which the relay housing structure is mounted in the housing box 20 will be described. This storage box 20 is a pole 30 for outdoor lighting that is set up outdoors.
It is attached to a relatively low position of. When a mercury lamp load, which is a relatively large load 40, is connected to the pole 30 for outdoor lighting, the storage box 20 is connected between the commercial electric wire 20a and the load 40 as shown in FIGS. 10 and 11. A magnet 20b is installed, but a relatively small load 40
12 and 13 when the fluorescent lamp load is connected.
As shown in, the commercial wire 20b and the load 40 are directly connected without the magnet 20b and the like being disposed.

Next, the operation circuit 50 of the relay 4 will be described with reference to FIG. The operating circuit 50 is composed of electronic components arranged on the first and second printed circuit boards 2 and 3. A rectifier circuit 51 rectifies the signal AC voltage of the full two-wire type signal line 52 capable of time division multiplex transmission constituted by the signal line side electric wire 5, and the rectified DC voltage is constant. Through the voltage circuit 53, the transmission signal processing circuit 54 including a microcomputer is supplied with power as a power supply voltage. The transmission signal processing circuit 54 receives the time division multiplex transmission signal from the full two-wire type signal line 52 via the signal receiving circuit 55, and outputs the signal such as the address set by the address setting unit 56 to the reply circuit 57. A time-division multiplex transmission signal is transmitted via a full 2-wire signal line 52.
Reply to An oscillation circuit 58 and a reset circuit 59 for operating a microcomputer are connected to the transmission signal processing circuit 54. The main contact portion 4b of the relay 4 is controlled to open / close by the relay drive circuit 60 connected to the transmission signal processing circuit 54. The open / close control state of the relay 4 is monitored by the relay state monitoring circuit 61 connected to the auxiliary contact 4c of the relay 4, and the monitoring result is sent to the transmission signal processing circuit 54.

Next, with reference to FIG. 15, a system using the terminal unit 10 which constitutes the relay housing structure will be described. In addition, in FIG. 15, the full two-wire type signal line 52 constituted by the signal line side electric wire 5 is shown by a dashed line. The terminal unit 10 is connected to a load 40 such as a lighting fixture, and is arranged in an outdoor lighting pole 30 to which the load 40 is attached. That is, this terminal unit 10 is arranged in an outdoor environment. On the other hand, the terminal unit 10 with the full 2-wire signal line 52
The transmission unit 62 connected to is installed in an indoor environment together with a switch board 63 having an optical address setting type switch 63a.

In the housing structure of such a relay, the first
Load side wire 6 soldered directly to the printed circuit board 2 of
The signal line side electric wire 5 directly soldered to the second printed circuit board 3 does not have a screwed portion as in the conventional example in the connection portion with the first printed circuit board 2 and the second printed circuit board 3
Since there is no screwed portion in the connection portion with and unlike the conventional example, both are less likely to corrode, and the relay 4 arranged on the second printed circuit board 3 can operate reliably.

The first printed circuit board 2 and the load side electric wire
The connecting portion with 6 and the connecting portion between the second printed circuit board 3 and the signal line side electric wire 5 are hermetically sealed by a filling member 8 made of a resin material filled in the inner space 13 of the case 1, Since it is isolated from the outside air, the corrosion resistance is further improved and the relay 4 can operate more reliably.

In this embodiment, the inner space 13 of the case 1 includes the relay 4 and the first and second printed circuit boards 2,
Filling member 8 made of resin material between 3 and the inner surface of case 1
However, for example, the connecting portion between the first printed circuit board 2 and the load side electric wire 6 and the connecting portion between the second printed circuit board 3 and the signal line side electric wire 5 both have sufficient corrosion resistance. In such a case, the filling member 8 does not have to be filled, and in that case, the labor for manufacturing is reduced.

Further, in this embodiment, the first and second printed circuit boards 2 and 3 are used, but the same effect can be obtained even with one printed circuit board.

[0023]

According to the first aspect of the present invention, since the electric wire directly soldered to the printed circuit board does not have a screwed portion at the connection portion with the printed circuit board as in the conventional example, it is less likely to corrode. Therefore, the relay disposed on the printed circuit board can operate reliably.

According to a second aspect of the present invention, the connecting portion between the printed circuit board and the electric wire is hermetically sealed by a filling member made of a resin material filled in the inner space of the case to be isolated from the outside air. Therefore, the corrosion resistance is further improved than that of the first aspect, and the relay can operate more reliably than that of the first aspect.

[Brief description of drawings]

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

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a plan view of the above.

FIG. 5 is a partially cutaway front view showing a filling state of the filling member of the above.

FIG. 6 is a plan view showing a filling state of the filling member of the above.

FIG. 7 is a front view of the vicinity of a second printed circuit board of the above.

FIG. 8 is a rear view of the vicinity of the second printed circuit board of the above.

FIG. 9 is a front view of an outdoor lighting pole provided with the same as above.

FIG. 10 is a sectional view showing a storage state in the storage box when the above-mentioned one is used for controlling a large capacity load.

11 is a wiring system diagram of FIG.

FIG. 12 is a sectional view showing a storage state in the storage box when the above-mentioned one is used for controlling a small capacity load.

13 is a wiring system diagram of FIG.

FIG. 14 is an operating circuit of the above relay.

FIG. 15 is a schematic diagram of a system in which the above is used.

FIG. 16 is an exploded perspective view of a conventional example.

[Explanation of symbols]

 1 Case 13 Inner space 2 1st printed circuit board 3 2nd printed circuit board 4 Relay 4a Outer frame 5 Signal line side wire 6 Load side wire 8 Filling member

Claims (2)

[Claims] 1. A box-shaped case, a relay, and a printed circuit board that is housed in the inner space of the case together with the relay in a state where the relay is arranged and is connected to the outside of the case via an electric wire. In the relay housing structure, the electric wire is directly soldered to the printed circuit board. 2. The relay has a relay body hermetically sealed in an outer shell thereof, and the inner space is made of a resin material between the relay and the printed circuit board and an inner surface of the case. The accommodating structure for a relay according to claim 1, wherein a filling member is filled.