JP3010620B2 - Switch circuit board mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch capable of opening and closing a load current, an exciting current and a charging current, supplying an abnormal current in a short circuit state of an electric circuit through which each current flows, and supplying current for a specified time. The present invention relates to a circuit board mounting structure for a switch to be mounted.

[0002]

2. Description of the Related Art Conventionally, a circuit board mounting structure for a switch of this type includes a case body in which a stationary contact and a movable contact are housed and an insulating medium such as gas is sealed, and a side wall of the case body. A circuit board mounted on a switch formed of a mechanism cover that houses a mechanism unit that rotationally drives the movable contact via a main shaft and that is accommodated therein, and performs drive control and the like of the mechanism unit. It is configured to be attached to a side wall of the mechanism cover. A main shaft is provided so as to penetrate the case main body and the partition of the mechanism cover, and a mechanism is configured to rotate the movable contact through the main shaft. The circuit board is fixed to the side wall of the portion that does not interfere with the operation range of the mechanism section in the mechanism cover, and is configured to be wired.

[0003]

Since the conventional circuit board mounting structure of the switch is constructed as described above, it interferes with the operating range of the mechanism within the space of the narrow closed mechanism cover. In order to prevent such a situation from being mounted on the side wall of the mechanism cover, there is a problem that the work efficiency of the mounting is deteriorated. In particular, since the inside of the mechanism cover is a closed narrow space, it is difficult to connect the circuit board to be attached to another device even when the circuit board to be attached is connected, and the working opening of the mechanism cover and the lid of this working opening are enlarged. There is a problem that it must be formed. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and has as its object to provide a circuit board mounting structure for a switch, which can easily and quickly mount a circuit board for controlling a mechanism in a mechanism cover. I do.

[0004]

A circuit board mounting structure for a switch according to the present invention comprises a case body in which a stationary contact and a movable contact are housed and an insulating medium such as gas is sealed, and a case body of the case body. A circuit board that is provided adjacent to the side wall and that is formed from a mechanism cover that houses a mechanism section that rotationally drives the movable contact via a main shaft is housed. In the circuit board mounting structure for the switch to be mounted, the mechanism cover is openably and closably closed, a working opening is formed on a side surface of the mechanism cover, and a plurality of support protrusions project from the vicinity of the working opening into the opening area. And mounting the circuit board in the opening area of the working opening fixed to the plurality of support projection pieces. As described above, in the present invention, in the working opening of the mechanism cover disposed adjacent to the case body, the circuit board is fixed to the plurality of supporting protrusions projecting into the opening area of the working opening. The circuit board can be easily and securely mounted in the narrow space where the mechanism cover is closed, and interference with the operation area of the mechanism section housed in the mechanism cover is taken into consideration. The circuit board can be mounted without performing.

Further, another circuit board mounting structure for a switch according to the present invention comprises a case body in which a stationary contact and a movable contact are housed and an insulating medium such as gas is sealed, and a side wall of the case body. A circuit board for controlling the driving of the mechanism is mounted on a switch formed of a mechanism cover which is provided adjacently and which houses a mechanism for rotating and driving the movable contact via a main shaft. In the circuit board mounting structure of the switch, a working opening is formed on a side surface of the mechanism cover,
A lid that closes the work opening so that it can be opened and closed is arranged,
The circuit board is mounted and arranged inside the lid. As described above, in the present invention, in the lid for closing the working opening of the mechanism cover disposed adjacent to the case main body, the circuit board is mounted and disposed in the inner concave portion of the lid. Therefore, the circuit board can be easily and reliably mounted in the narrow space where the mechanism cover is closed, and the circuit board can be mounted without considering the interference with the operation area of the mechanism section housed in the mechanism cover. Can be.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION

(First Embodiment of the Present Invention) Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic bottom view of a switch to which the switch circuit board mounting structure according to this embodiment is applied, and FIG. 2 is a line AA of the switch circuit board mounting structure shown in FIG. FIG. 3 shows a detailed cross-sectional view of a main part along line B. In each of the drawings, the circuit board mounting structure of the switch according to the present embodiment includes a case body 2 in which a fixed contact 21 and a movable contact 22 are housed and an insulating medium such as gas is sealed, A switch formed of a mechanism cover (not shown) disposed adjacent to the side wall and configured to rotatably drive the movable contact 22 via the main shaft 23, and a switch formed of the mechanism cover. A circuit board 1 for performing drive control and the like is mounted on the mechanism cover 3.
A plurality of support projections 31 are formed in the opening area from the inner wall around the work opening 30 and are fixed to the plurality of support projections 31 so as to be in the opening area of the work opening 30. This is a configuration in which the circuit board 1 is provided over substantially the entire area.

The support projection 31 is formed in a substantially S-shaped angle shape, and one end of the angle is screwed to the inner wall of the mechanism cover 3 around the outer periphery of the working opening 30.
1a, the other end of the angle shape is projected into the opening area of the working opening 30. The circuit board 1 is screwed to the other end of the support projection piece 31 protruding into the work opening 30 with a screw 31b, and the circuit board 1 is attached to the opening area of the work opening 30 and the inner concave portion 44 of the lid body 4.
It is configured to be stored inside. A waterproof packing 32 is attached to the outer peripheral surface of the working opening 30. The waterproof packing 32 has two raised portions 32a on the outer surface, and the raised portion 32a allows close contact with the lid 4. It has been strengthened to improve the waterproof effect.

Next, the mounting operation of the circuit board mounting structure for a switch according to the present embodiment based on the above configuration will be described. First, a main shaft 23 is provided from the main body working opening 24 and the working opening 30 so as to penetrate the partition of the case body 2 and the mechanism cover 3 which are integrally formed. Then, the movable contact 22 is attached from the main body working opening 24, and the mechanism section and the support projection 31 are attached to the inside of the mechanism cover 3 from the working opening 30 (see FIG. 2C). Also, necessary lead wires 5 for the fixed contact 21, the movable contact 22, the mechanism unit, and other stored equipment are connected, and the lead wire 5 to be connected to the circuit board 1 is connected to the working opening. It is wired so as to be drawn out to the vicinity of 30.

The lead wire 5 is connected to the connector 11 of the circuit board 1 via a plug. The connected circuit board 1 is connected to a plurality of support projections 31 projecting into the opening area of the working opening 30 by screws 31b. It is fixed and attached so as to close this open area (see FIG. 2B). As described above, since the circuit board 1 can be stored in the opening area of the working opening 30 and the inner concave portion 44 of the lid 4 which are always required for the mechanism cover 3, the mechanism stored in the mechanism cover 3 is provided. It can be mounted without considering the positional relationship with the parts and interference with the operation area of this mechanism. In particular, when the circuit board 1 is equipped with a control circuit for controlling or detecting the mechanical section or the switch itself and the attached parts, the circuit board 1 may be configured to control the mechanical section or the switch itself and the attached parts. Each lead wire 5 is pulled out at a time, and the lead wire 5 is connected to the circuit board 1 immediately before the closing operation of the lid 4 at the final stage of assembling the switch.
1, the circuit board 1 can be easily and quickly mounted, so that the circuit board 1 can be easily and quickly mounted, and the mounting workability is improved.

(Second Embodiment of the Present Invention) The second embodiment of the present invention
The embodiment will be described with reference to FIG. FIG. 3 is a cross-sectional view and an operation explanatory view of a main part of a circuit board mounting structure of the switch according to the present embodiment. In the same figure, the circuit board mounting structure of the switch according to the present embodiment is similar to the embodiment shown in FIGS. 1 and 2 in that the circuit is mounted on the switch in which the case body 2 and the mechanism cover 3 are integrally formed. The board 1 is mounted, and in addition to this structure, the working opening 3 of the mechanism cover 3
The circuit board 1 is provided in the inner concave portion 44 of the cover 4 for covering the circuit board 1.
It is a configuration to attach. The lid 4 is fixedly supported on the upper surface of the mechanism cover 3 by a hinge 41 and is rotatably supported on one side as a fulcrum, and is fixed to the upper surface of the mechanism cover 3 with screws 42 when the other side is closed. Configuration. A plurality of angle-shaped support projections 43 are provided in the inner concave portion 44 of the lid 4.
Are mounted by screws 43a, and the circuit board 1 is screwed to the plurality of support protrusions 43 by screws 43b.

Next, the assembling operation of this embodiment based on the above configuration will be described. First, the fixed contact 21, the movable contact 22, and the main shaft 23 are mounted in the case body 2 and the mechanism cover 3 in the same manner as in the above-described embodiment, and the mechanism is mounted and the necessary lead wire 5 is connected. The cover 4 of the mechanism cover 3 is previously attached via a hinge 41 when the mechanism cover 3 is made into a box, and a plurality of support protrusions 42 are screwed into the inner recess 44 with screws 43a. By screwing the circuit board 1 to the plurality of support projections 43 with the screws 43b, the circuit board 1 can be mounted while being housed in the inner recess 44 of the lid 4. A lead wire 5 from each device mounted in the case main body 2 and the mechanism cover 3 is connected to the connector 11 via the plug on the mounted circuit board 1. When this connection is made, the lid 4 is screwed to the mechanism cover 3 with the screw 42, and the circuit board 1 can be mounted and stored with the mechanism cover 3 in a closed state.

The circuit board 1 is placed under the same conditions as those in the mechanism cover 3 without separately forming a closed state for housing the circuit board 1 and without occupying the space in the body of the mechanism cover 3. 4 can be accommodated in the inner concave portion 44 without taking into account the positional relationship with the mechanism accommodated in the mechanism cover 3 and the interference with the operation area of the mechanism. Although the working opening 30 is arranged on the bottom surface of the mechanism cover 3 in each of the above-described embodiments, the working opening 30 may be located anywhere on the side surface, the top surface, or the like of the mechanism cover 3. Can also be applied.

[0013]

As described above, according to the present invention, in the working opening of the mechanism cover disposed adjacent to the case main body, a plurality of supporting projections projecting into the opening area of the working opening. Since the circuit board is fixedly mounted on the mechanism cover, the circuit board can be easily and surely mounted in the narrow space where the mechanism cover is closed, and the operation of the mechanism section housed in the mechanism cover is performed. This has the effect that the circuit board can be mounted without considering the interference with the area. Further, in the present invention, in the lid for closing the working opening of the mechanism cover disposed adjacent to the case main body, the circuit board is attached and disposed in the concave portion inside the lid. In addition, the circuit board can be easily and reliably mounted in the narrow space where the mechanism cover is closed, and the circuit board can be mounted without considering interference with the operation area of the mechanism section housed in the mechanism cover. It has the effect of being able to.

[Brief description of the drawings]

FIG. 1 is a schematic bottom view of a switch to which a circuit board mounting structure for a switch according to a first embodiment of the present invention is applied.

FIG. 2 shows a circuit board mounting structure of the switch shown in FIG.
It is an important section detailed sectional view in A line and BB line.

FIG. 3 is a cross-sectional view and an operation explanatory view of a main part of a circuit board mounting structure of a switch according to a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circuit board 2 Case main body 3 Mechanism cover 4 Lid 5 Lead wire 11 Connector 21 Fixed contact 22 Movable contact 23 Main shaft 24 Main body working opening 30 Working opening 31, 43 Support projection piece 31a, 31b, 43a, 43b Screw 32 waterproof packing 32a ridge 41 hinge 44 inner recess 51 handle

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 33/53 H01H 33/64 H02B 1/24

Claims (2)

(57) [Claims] A fixed contact and a movable contact are accommodated,
A case body in which an insulating medium such as gas is sealed, and a mechanism cover that is disposed adjacent to a side wall of the case body and houses a mechanism that rotationally drives the movable contact through a main shaft are housed therein. A circuit board mounting structure for mounting a circuit board for performing drive control and the like of the mechanism unit on the switch which is closed by a cover so as to be openable and closable, and a working opening is formed on a side surface of the mechanism cover. A plurality of support protrusions are protruded from the vicinity of the periphery of the work opening into the opening area, and the circuit board is fixed to the plurality of support protrusions and arranged in the opening area of the work opening. Circuit board mounting structure for switchgear. 2. A fixed contact and a movable contact are stored,
A case body in which an insulating medium such as gas is sealed, and a mechanism cover that is disposed adjacent to a side wall of the case body and houses a mechanism that rotationally drives the movable contact through a main shaft are housed therein. A circuit board mounting structure for mounting a circuit board for performing drive control and the like of the mechanism unit on the switch, wherein a working opening is formed on a side surface of the mechanism cover, and the working opening is closed in a freely openable and closable manner. A circuit board mounting structure for a switch, wherein a cover is provided, and the circuit board is mounted in a recess inside the cover.