JP2805917B2 - Wiring board storage device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for storing a wiring board in a main body of an electric device such as a circuit breaker or an electromagnetic contactor.

[Conventional technology]

Generally, when many circuit components constituting an electric circuit or an electronic circuit are stored in a main body of an electric device such as a circuit breaker or an electromagnetic contactor, after mounting these circuit components on a wiring board, the wiring board is removed. It is stored in a storage case and electrically insulated.

In this storage case, in order to facilitate the work of storing the wiring board, the storage case is configured by four peripheral side walls and a bottom wall, and a storage opening surface of the wiring board is provided, and a holding portion formed on the four peripheral side walls is used. It is configured to hold both ends of the wiring board.

In addition, an electric wire drawn from the wiring board is led out from an electric wire insertion opening formed in the bottom wall of the storage case, and is connected to an electric component or an electric device provided outside the storage case.

In addition, it is conceivable to derive the lead wire from the wiring board from the storage opening surface of the storage case, but the opening surface is too wide in view of the opening area necessary for the electric wire insertion to provide electrical insulation. Therefore, it is not effective.

[Problems to be solved by the invention]

However, in the above-described wiring board storage device, since it is necessary to insert the lead wire from the wiring board through the insertion opening of the wire formed in the bottom wall, the lead wire is previously placed outside the storage case. The installed electric parts or electric devices cannot be connected, and the work procedure is restricted, which causes a reduction in work efficiency.

Further, in order to easily insert the lead wire into the insertion opening in the bottom wall, it is necessary to make the opening large, which is not preferable in terms of electrical insulation.

The present invention has been made in view of the above circumstances, and an object of the present invention is to make it possible to easily perform the operation of inserting a lead wire into an insertion opening and to install an electric component or an electric device that is previously mounted on the lead wire outside the storage case. It is an object of the present invention to provide a wiring board storage device capable of performing insertion work even when the device is connected.

[Means for solving the problem]

In order to solve this problem, a wiring board storage device according to claim (1) is provided with a circuit board equipped with circuit components and a lead-out wire, and a four-sided side wall and a bottom wall provided with a storage opening surface of the wiring board. Formed on the four peripheral side walls, holding portions for holding both end portions of the wiring board, forming an insertion opening for an electric wire drawn from the wiring board on the bottom wall, and further forming a holding portion from the bottom wall. A wiring board storage device comprising: a storage case having a holding piece provided therein; and a main body of an electric device having a receiving recess into which the holding piece of the storage case is fitted, and closing and storing the storage opening surface of the storage case. In this case, an electric wire insertion groove is formed from an opening green of a side wall, which is juxtaposed to a wiring board of the storage case, to an insertion opening of a bottom wall.

Further, the wiring board storage device according to claim (2) provides the wiring board storage device according to claim (1), wherein an electric wire drawn from the wiring board is provided on a surface of the wiring board opposite to the side wall on which the wire insertion groove is formed. It is derived from the above.

[Action]

According to the wiring board storage device of the present invention, when storing the wiring board in the storage case, it is possible to equip the bottom wall with an insertion wire drawn out from the wiring board through the wire insertion groove. Simplification of the insertion work into the insertion opening. In addition, the presence of the wire insertion groove makes it possible to apply an elastic force to the side wall on which the holding portions for holding both ends of the wiring board are formed, thereby improving the holding strength of the wiring board. Furthermore, in a state where the storage case is mounted on the main body of the electric device, the holding piece is fitted into the receiving recess by the holding piece and the receiving recess, so that even if a force is applied in a direction in which the insertion opening and the wire insertion groove are opened. , Its opening is reduced.

In addition, the wiring board storage device according to claim (2) provides the wiring board storage device according to claim (1), in which an electric wire drawn from the wiring board provided in the insertion opening in the bottom wall comes out through the electric wire insertion groove. Can be restricted by existence.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5 showing a circuit breaker.

The circuit breaker main body 1 includes a base 1a and a cover 1b, and is equipped with terminal devices 2 on both side ends of the main body 1.

The circuit breaker body 1 also includes a contact device 3 electrically connected to one terminal device 2, a main circuit coil 4a interposed between the contact device 3 and the other terminal device 2, and a tripping device. The electromagnet device 4 equipped with the coil 4b and the current detection coil 4c and operated by exciting the main circuit coil 4a and the trip coil 4b by a predetermined amount or more, and the movable frame 5b in conjunction with the opening / closing operation of the externally protruding operation handle 5a. An opening / closing mechanism unit 5 for rotating and opening and closing the contact device 3 and driving the movable frame 5b when the trip frame 5c responds to the electromagnet device 4 to forcibly open the contact device 3 in the closed state is housed. .

The circuit breaker is of a three-pole type, is provided at a single opening / closing mechanism 5 and at a position substantially at the center of the circuit breaker main body 1, and opens and closes each pole.

Therefore, since there is a space above the movable frame 5b in the poles located on both sides, the current detection value from the current detection coil 4c of the electromagnet device 4 is input to one side to perform time delay and comparison. As a result, an electronic circuit for exciting the trip coil 4b when it is determined that the current is an overload current is provided.

The component 6 constituting the electronic circuit includes an adjuster 6a capable of changing a level to be determined as an overload current, and these circuit components 6 are divided into opposed wiring boards 7a and 7b, Equipped on opposite sides.

The divided wiring boards 7a and 7b are electrically connected by electric wires 7c, and the adjuster 6a, which is a part of the circuit component,
Equipped on the front so that it can be adjusted.

Also, from the wiring boards 7a and 7b, the current detection coil 4c
A lead wire 8 for connection to the trip coil 4b and for taking in power is led out from the facing surfaces of the wiring boards 7a and 7b.

Further, the wiring boards 7a and 7b are housed in the housing case 9 and are electrically insulated.

The storage case 9 is constituted by four peripheral side walls 9a, 9b, 9c, 9d and a bottom wall 9e, and the front is a storage opening surface 9f of the wiring boards 7a, 7b.

Of these four circumferential side walls 9a, 9b, 9c, 9d, opposing side walls
9a, 9b are formed with holding portions 9g formed by grooves into which both ends of the wiring boards 7a, 7b are fitted, and guide the wiring boards 7a, 7b inserted from the storage opening surface 9f, and store the stored wiring boards. 7
Hold a, 7b.

Further, an insertion opening 9h through which the lead wire 8 led out from the wiring boards 7a and 7b is inserted is formed in the bottom wall 9e.

The insertion opening 9h is an electric wire insertion groove 9j extending from a side wall opening edge formed on a side wall 9b juxtaposed to the wiring boards 7a, 7b to an insertion opening 9h of the bottom wall 9e among the four peripheral side walls 9a, 9b, 9c, 9d. And the lead wire 8 can be inserted through the opening edge of the side wall.

By forming the insertion opening 9h and the wire insertion groove 9j, when the length of the wiring boards 7a, 7b is substantially equal to or slightly larger than the length between the holding portions 9g of the side walls 9a, 9c, the storage case 9
Strong storage can be expected due to the elasticity of.

Also, from the bottom wall 9e of the storage case, the wiring boards 7a, 7b
The holding pieces 9k are provided in the side walls 9a and 9c where the holding portions 9g are provided, and the receiving recesses 1c formed in the base 1a of the circuit breaker body 1 are provided.
The positioning is achieved by fitting both ends into the.

The holding piece 9k has a length reaching the side walls 9b and 9d. The holding piece 9k on the side wall 9c plays a role of shielding arc gas from the contact device 3 and also has a function of holding the holding piece 9k on the side wall 9c.
Serves as a guide for the lead wire 8 so that the lead wire 8 is less likely to come into contact with the trip frame 5c of the opening / closing mechanism 5 or the electromagnet device 4.

Further, since both ends of the holding piece 9k are fitted into the base 1a of the circuit breaker main body 1, when the storage case 9 is mounted on the base 1a, the opening 9h and the wire insertion groove 9j open. Even if force is applied, the opening decreases.

Further, when the storage case 9 is mounted on the base 1a of the circuit breaker main body 1, the adjuster 6a is located on the storage opening surface 9f. In this state, it is possible to adjust the level at which the overload current is determined. Becomes

Moreover, when the storage case 9 mounted on the base 1a is covered with the cover 1b of the circuit breaker main body 1, the storage opening surface 9f is closed by the cover 1b, and the storage opening 9f is sandwiched by the base 1a and the cover 1b. Will be retained.

At this time, the wire insertion groove 9j formed on the side wall 9b is also covered.
Blocked by 1b.

As described above, by forming the wire insertion groove 9j extending from the opening edge of the side wall 9b of the storage case 9 to the insertion opening 9h of the bottom wall 9e, when storing the wiring boards 7a and 7b in the storage case 9, The lead wires 8 from the wiring boards 7a and 7b can be provided in the insertion openings 9h of the bottom wall 9e through the wire insertion grooves 9j, so that the work of inserting the lead wires 8 into the insertion openings 9 can be simplified. Also, even if the electromagnet device 4 provided outside the storage case 9 is connected to the lead wire 8 in advance, the insertion operation can be performed.

Furthermore, since the wire insertion groove 9j was formed on the side wall 9b provided in parallel with the wiring boards 7a and 7b, the holding portion 9g for holding both ends of the wiring boards 7a and 7b was formed due to the presence of the wire insertion groove 9j. It becomes possible to apply elastic force to the side walls 9a, 9c,
The holding strength of the wiring boards 7a and 7b can be improved.

Moreover, the wiring board on the side wall 9b side where the wire insertion groove 9j is formed
The drawn wire 8 from 7a is connected to the side wall on which the wire insertion groove 9j is formed.
Since the wiring board 7a is drawn out from the surface of the wiring board 7a on the opposite side to the wiring board 9b, the wires 8 drawn from the wiring boards 7a and 7b provided in the insertion opening 9h of the bottom wall 9e are pulled out through the wire insertion grooves 9j. This can be limited by the presence of the substrate 7a.

In the embodiment, the circuit breaker has been specifically described. However, the present invention can be applied to various electric devices such as an electromagnetic contactor, a detection relay, and an electric razor.

Further, the wiring boards 7a and 7b are divided and provided side by side. However, a single wiring board may be used, or at least one of the wiring boards may be divided in various arrangement methods. Is included in the technical scope as long as it satisfies the contents described in the claims.

〔The invention's effect〕

According to a first aspect of the present invention, there is provided a wiring board storage device including a wiring board provided with circuit components and leading out a lead wire, and a four-sided side wall and a bottom wall provided with a storage opening surface of the wiring board. Forming a holding portion for holding both ends of the wiring board on the four side walls, forming an insertion opening for an electric wire drawn from the wiring board on the bottom wall, and holding a holding piece on a side wall portion where the holding portion is formed from the bottom wall. In a wiring board storage device comprising a storage case provided and an electric device body having a receiving recess into which a holding piece of the storage case is fitted, and closing and holding a storage opening surface of the storage case,
An electric wire insertion groove is formed from the opening edge of the side wall, which is juxtaposed to the wiring board of the front base storage case, to the insertion opening of the bottom wall. , Through the wire insertion groove, it is possible to equip the bottom wall with an insertion opening, thereby simplifying the operation of inserting the lead wire into the insertion opening, and also providing an electric component or an electric device that is previously mounted on the lead wire outside the storage case. The insertion operation can be performed even when the device is connected. In addition, the presence of the electric insertion groove makes it possible to apply an elastic force to the side wall on which the holding portions for holding both ends of the wiring board are formed, and it is possible to improve the holding strength of the wiring board. Furthermore, the holding piece and the receiving recess allow the holding piece to fit into the receiving recess when the storage case is mounted on the main body of the electric device, so that even if a force is applied in the opening direction of the insertion opening and the wire insertion groove. The opening is reduced, and the holding strength of the wiring board can be further improved.

In addition, the wiring board storage device according to claim (2) provides the wiring board storage device according to claim (1), wherein an electric wire drawn from the wiring board is provided on a surface of the wiring board opposite to the side wall having the wire insertion groove. As a result, it is possible to restrict the outgoing electric wire from the wiring board provided in the insertion opening of the bottom wall from the wiring board through the wire insertion groove by the presence of the wiring board.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing one embodiment of the present invention, FIG. 2 is an enlarged perspective view showing a different part of FIG. 1, FIG. 3 is a sectional side view of a part of FIG. FIG. 4 is a cross-sectional front view of the whole of FIG. 1, and FIG. 5 is a cross-sectional side view of the whole of FIG. 1 ... body, 1a ... basin, 1b ... cover, 6 ... circuit parts, 7a, 7b ... wiring board, 8 ... lead wire, 9 ... storage case, 9a, 9b, 9c, 9d ... … Four round side wall, 9e …… bottom wall,
9f: Storage opening surface, 9g: Holder, 9h: Insertion opening, 9j
…… Wire insertion groove.

Claims (2)

(57) [Claims] 1. A wiring board provided with circuit components and from which lead wires are led out, and a peripheral wall and a bottom wall provided with a storage opening surface of the wiring board, and the four peripheral side walls hold both ends of the wiring board. A storage case, in which a holding portion to be formed is formed, a bottom wall is formed with an insertion opening for an electric wire drawn from the wiring board, and a holding piece is provided on a side wall portion where the holding portion is formed from the bottom wall. In a wiring board storage device having a receiving recess into which a piece is fitted, and a main body of an electric device stored and held by closing a storage opening surface of the storage case, the storage case is arranged in parallel with the wiring board of the storage case. A wiring board storage device, wherein an electric wire insertion groove extending from an opening edge of a side wall to be inserted to an insertion opening of a bottom wall is formed. 2. The wiring board storage device according to claim 1, wherein the lead wire from the wiring board is led out from a surface of the wiring board opposite to a side wall on which the wire insertion groove is formed. .