JPH099420A - Attachment structure of electronic equipment - Google Patents

Abstract

PURPOSE: To facilitate the removal and improve the retention power by making an edge receiving spring, which is accommodated in a housing, being electrically connected to the body of electric equipment, in roughly a U shape, and making a fan-shaped part at the head, and accommodating it in a housing for shifting by a specified amount in the direction of passage of a plug edge. CONSTITUTION: Electric equipment 11 and an edge receiving spring 17 connected electrically with this are accommodated in a housing 12. The housing 12 is molded in a desired shape of plastic, being provided with a plug edge passage hole 16 at the lower part on one side of the outside. An edge receiving spring storage 12a is provided in the position fronting on the plug edge passage hole 15, and an edge receiving spring 17 is accommodated. The depth of the edge receiving spring storage 12a is made longer by a specified amount than the height of the edge receiving spring 17. The edge receiving spring 17 is made, being bent in roughly a U shape, by both opposite pieces 17b and 17b and a coupling piece 17c out of conductive elastic material, and fan-shaped parts 17d and 17d are made at the head. Hereby, a plug edge 4 linked to the conductive bar 3 is retained firmly by the edge receiving spring 17, and besides it can be easily inserted and removed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection mounting structure for electrical equipment suitable for mounting electrical equipment such as breakers and relays on a distribution board.

[0002]

2. Description of the Related Art When a main breaker, a branch breaker, a relay, or the like is mounted on a distribution board, a conductor connected to an insulating base and a power source arranged on the insulating base for electrical connection with an electric device. There is known a connection mounting structure for an electric device in which a plug-in terminal is provided in a breaker or a relay in a connection mounting means having a bar, and the plug-in terminal is inserted into a connection mounting hole of a conductor bar (for example, Japanese Patent Laid-Open Publication No. 2000-242242) No. 52-138648). Since this breaker or relay has a shape in which the plug-in terminal is projected, space is available for storage and transportation until the breaker or relay is mounted on the distribution board, and breakage or deformation of the plug-in terminal is prevented. It requires careful handling for handling.

In order to solve such a problem, in recent years, a connection and attachment structure of electric equipment by the connection and attachment means 1 and the electric equipment 11 as shown in FIG. 11 has been adopted. That is, the connection attachment means 1 is an insulating base 2 that is attached to an unillustrated distribution board and has a size to which a required number of electric devices are attached, and a plug for electrically connecting the electric devices. A blade 4 connected in series, which is connected to the power supply provided on the insulating base 2 and a conductor bar 3 which is connected to the insulating base 2 for attaching electrical equipment together with the blade 4 to the conductor bar 3. And a locking portion (5) for locking a part of the housing of the electric device.

On the other hand, an electric device 11 such as a breaker or a relay accommodates the main body of the electric device and has a housing 15 provided with a locked portion 15 to be locked by the locking portion 5 and a blade insertion hole 16.
12 and the blade 4 which is inserted into the blade insertion hole 16 and in which the pressure contact portion 17a is in pressure contact, and is electrically connected to the main body of the electric device and housed in the housing 12 (FIG. 12 to FIG. 12). 14), and. The housing 12 is composed of two appropriate members such as a body and a cover. The blade receiving spring 17 is normally fixedly accommodated in the housing 12.

The conductor bar 3 has three L1 phases, L2 phases, and N phases corresponding to a single-phase, three-wire type electric circuit, and L1 phase, N
There are two phases, or as shown in FIG. 11, only one L1 phase.

The connection and attachment of the electric device 11 in the connection and attachment structure of the electric device is performed as follows after the connection attachment means 1 is attached to the bottom plate of the distribution board or the like. First, the locked portion 15 of the electric device 11 is locked to the locking portion 5 of the connection attachment means 1, and the pressure contact portions 17a and 17a of the blade receiving spring 17 are moved while rotating the housing 12 around the contact point as a fulcrum. Press it against the blade 4. From this, the electric device 11 is electrically connected and mechanically attached to the connection attaching means 1, and when the electric device 11 is detached from the connection attaching means 1, the above operation may be performed in reverse. 12 schematically shows a state in which the electric device 11 is connected and attached to the connection attaching means 1, and FIG. 13 is a perspective view showing only the blade 4 and the blade receiving spring 17 of FIG.
FIG. 7 is an exploded perspective view of the blade 4 and the blade receiving spring 17.

[0007]

11 to 1 described above.
Although the work of connecting and mounting the electric device shown in Fig. 4 is simple, the connection and fixing of the electric device 11 is performed by the engagement of the engaging portion 5 and the pressing force of the blade receiving spring 17 and the blade 4. Therefore, it is necessary to increase the pressure contact force in order to increase the holding strength of the connected and attached state against vibration and the like. When the pressure contact force is increased, it is relatively easy because the pushing operation is performed when the electric equipment is connected and attached, but the pulling operation is performed when the electric equipment is detached, which makes the work difficult.

The present invention has been made in view of the above circumstances, and a first object of the present invention is to provide a connection mounting structure for an electric device, which facilitates the work of removing the electric device even if the pressure contact force of the blade is increased. There is. A second object of the present invention is to provide a connecting and mounting structure for an electric device in which the holding strength of the connected and mounted state of the electric device is improved and a good feeling of completion of mounting is obtained.

[0009]

In order to solve such a problem, in the connection mounting structure for an electric device according to claim 1, an insulating base and a blade for electrically connecting to the electric device are connected in series. And a conductor bar connected to the power source arranged on the insulation base, and a part of the housing of the electric equipment connected to the insulation base to attach the electric equipment to the conductor bar together with the blade. Connection attachment means having a locking portion for locking,
A housing for accommodating a main body of an electric device and having a locked portion to be locked to a locking portion and a housing provided with a blade insertion hole, and a pressure contact portion for pressure contact with a blade inserted in the blade insertion hole. In a connection mounting structure of an electric device including an electric device having a blade receiving spring electrically connected to an electric device main body and housed in a housing, the blade receiving spring is formed in a substantially U shape. The tip spreading portion is formed at the tip and is housed in the housing so as to be movable by a predetermined amount in the blade insertion direction, and when the blade is pulled out to the inside of the blade insertion hole of the housing, The configuration is such that an expanding portion that expands is formed.

According to a second aspect of the present invention, there is provided a connection mounting structure for an electric device, wherein the plug blade according to the first aspect is formed with a fitting recess into which the pressure contact portion of the blade receiving spring is fitted.

According to a third aspect of the present invention, there is provided a connection mounting structure for an electric device, wherein an inner surface at the tip end side of the fitting recess is formed substantially perpendicular to the flat surface of the blade receiving spring.

According to a fourth aspect of the present invention, there is provided a connection mounting structure for an electric device, wherein the plug blade according to the second or third aspect has a lateral width larger than that of the blade receiving spring, and a lateral width of the fitting recess is substantially equal to the blade receiving spring. The configuration is the same.

Further, in the connection mounting structure for an electric device according to a fifth aspect, the fitting recess according to the fourth aspect is a through hole.

[0014]

According to the structure described in claim 1, when the electric device is detached, that is, when the plug blade is pulled out, the expanding portion of the housing acts so as to expand the tip expanding portion of the blade receiving spring. Reduce the contact pressure of the blade against the blade.

According to the structure of claim 2, in addition to the effect of claim 1, when the plug blade is inserted into the blade receiving spring by a predetermined amount, the pressure contact portion of the blade receiving spring exerts a pressure contact force. Since it fits in the fitting recess, a good feeling of completion of attachment is obtained at that time, and the fitting recess acts as a retainer against the press contact portion of the blade receiving spring.

According to the third aspect of the invention, in addition to the action of the second aspect, the retaining action for the press contact portion becomes more reliable.

According to the structure of claim 4, in addition to the effect of claim 2 or 3, the strength of the blade can be increased.

According to the structure of claim 5, in addition to the effect of claim 4, the manufacture of the blade is facilitated.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. In this embodiment, the connection attachment means 1 and the electric device 11 are main constituent members, and the electric device 1 is a breaker. And what is explained in the section of the prior art is especially the connection mounting means.
The configurations of the conductor bar 3 of 1 and the housing 12 of the electric device 1 are different. In addition, as described in the section of conventional technology,
Members or parts having similar basic functions are designated by the same reference numerals.

The connecting and mounting means 1 comprises an insulating base 2 and a conductor bar.
3 and locking part 5. The insulating base 2 is made of plastic or a metal material with an insulating coating so that it can be attached to the distribution board outside the drawing, and the required number of electric devices 11
It is molded to the size that can be attached. Therefore, the insulation base
Although not shown in Fig. 2, attachment holes and the like are provided at appropriate places so that the attachment plate can be attached to the bottom plate of the distribution board.

The conductor bar 3 is made of a conductive metal plate material, and comprises a bar main portion 3a extending in the longitudinal direction of the distribution board and a plurality of bar branch portions 3b which are connected from an appropriate portion of the bar main portion 3a in a direction orthogonal to the bar main portion 3a. It is formed to have and is arranged on the insulating base 2.
The bar branching portion 3b is provided with a blade 4 which is formed by bending an end portion thereof and which is electrically connected to an electric device 11 described later. The conductor bar 3 has one end connected to a power source including a main breaker.

The blade 4 has a width larger than that of a blade receiving spring, which will be described later, and is reduced in thickness in the plate thickness direction by a predetermined distance from a position of a predetermined distance from the tip, and the blade receiving spring, which will be described later. A fitting recess 4a having a width substantially the same as that of is provided. The fitting recess 4a is formed by the inclined surfaces 4b, 4b, ... Starting from a position of a predetermined distance. The above-mentioned predetermined distance is
When the blade 4 is inserted into a blade receiving spring described later by a predetermined amount (standard design value for connection and attachment), the press contact portion of the blade receiving spring is dimensioned to be fitted in a state in which a press contact force is applied. Therefore, the inclined surfaces 4b, 4b on the front end side of the fitting recess 4a act as retainers for the pressure contact portion of the blade receiving spring after the pressure contact portion is fitted.

The locking portion 5 is integrated with the insulating base 2 or integrally formed with the insulating base 2 after being formed separately. The portion protruding from the insulating base 2 is a vertical piece 5a and a horizontal piece. It is L-shaped with the piece 5b. The vertical piece 5a is positioned so as to be able to lock the stepped portion at one end of the housing of the electric device 11 described later, that is, the locked portion.

The electric device 11 which is a breaker is a housing
An electric equipment main body 12 and a blade receiving spring 17 electrically connected to the electric equipment main body 12 are housed. The housing 12 has a locked portion 15 that is locked to the locking portion 5 on one end side of the outer shell, and a blade insertion hole 16 below the locked portion 15.
Is formed by joining two members of an appropriate shape, for example, a body and a cover, which are molded by plastic, to the shape provided with. A blade receiving spring accommodating portion 12a is provided at a position facing the blade insertion hole 16 to accommodate the blade receiving spring 17. The blade receiving spring accommodating portion 12a has a depth, that is, a length in the plug blade inserting direction, which is longer than the height of the blade receiving spring 17 by a predetermined amount.

The blade receiving spring 17 is formed of a conductive elastic plate and is bent into a substantially U shape by the opposing pieces 17b, 17b and the connecting piece 17c. More specifically, both facing pieces 17b,
The bases 17b extend from the base end in a direction in which they are close to each other, and at the front end, they extend in a direction away from each other, and thus are formed to have divergent portions 17d, 17d at the front end. Then, the base ends of the divergent portions 17d, 17d, that is, the portions where the distance between the opposing pieces 17b, 17b is narrowest become the pressure contact portions 17a, 17a that are in pressure contact with the inserted blade 4. The blade 4 of the conductor bar 3 mentioned above
In other words, provided at positions corresponding to the blade insertion holes 16 and the blade receiving springs 17, when the blade 4 enters through the blade insertion holes 16, the blade receiving springs 17, specifically, , Press contact part 17a,
17a presses against blade 4. Further, the blade receiving spring 17 is accommodated so as to be movable by a predetermined amount in the blade insertion direction because the blade receiving spring accommodating portion 12a has a longer depth. In addition, in order to prevent the blade receiving spring 17 from being displaced in a direction substantially orthogonal to the approaching direction of the blade 4, it is preferable to provide an appropriate positioning guide portion in the blade receiving spring accommodating portion 12a.

The blade receiving spring accommodating portion 12a described above has the expanding portions 12b, 12b for expanding the tip expanding portions 17d, 17d of the blade receiving spring 17 when the stopper blade 4 is pulled out to the inner side of the blade inserting hole 16. It is formed to project. The expanding portions 12b, 12b are designed so that when the electric device 11 is pulled out in order to pull out the plug blade 4, the blade receiving spring 17 contacts the expanding portions 12b, 12b with a predetermined amount of movement.

In this embodiment, since the plug blade insertion hole 16 is provided so as to be biased toward the end of the bottom surface, the plug blade insertion hole 16 reaches the side wall and has an opening portion formed therein. Also, the locked portion 15
A load-side terminal device (not shown) is housed in a position where it overlaps with. Further, above the housing 12, there is provided a handle hole 12c for projecting the handle 11a of the breaker.

The conductor bar 3 has three L1 phase, L2 phase, and N phase corresponding to a single-phase three-wire type electric circuit, or L1 phase, N phase.
There are two phases, or, as shown, only one L1 phase.

In the connection and attachment of the electric equipment 11 in the connection and attachment structure of the electric equipment, as shown in FIG. 3, the connection and attachment means 1 is attached based on the connection attachment means 1 attached to the bottom plate of the distribution board or the like. The locked portion 15 of the electric device 11 is locked to the locking portion 5 of 1, and the housing 12 is rotated in the direction of arrow S with the contact point as the fulcrum. In this case, first, the blade 4 is the blade insertion hole.
16 and then the tip of the blade 4 pushes the pressure contact portions 17a, 17a of the blade receiving spring 17 to move the connecting piece 17c of the blade receiving spring 17 to the position where it contacts the bottom surface of the blade receiving spring accommodating portion 12a. . Next, as shown in FIG. 5 (a), the tip end of the blade 4 pushes the pressure contact parts 17a, 17a of the blade receiving spring 17 and spreads it, and FIG.
As shown in, the press contact portions 17a, 17a are fitted into the fitting recessed portion 4a of the blade 4 while the press contact force is applied. This state becomes the connection mounting position of the standard design value of the electric device 11 shown in FIG. Immediately after this, the completion of mounting can be sensed by the click feeling of the elastic coupling.

In this state, the electric device 11 is at a predetermined mounting position, the blade receiving spring 17 is securely pressed against the blade 4, and is electrically connected to the connection mounting means 1, and the locked portion 15 is the locking portion. It is locked to 5 and mechanically attached to the connection attachment means 1.

When the electric device 11 is detached from the connection attachment means 1, the above-described operation is reversed, that is, the housing 12 is rotated in the direction opposite to the arrow S in FIG. In this case, first, since the pressure contact portions 17a, 17a of the blade receiving spring 17 are fitted into the fitting recessed portion 4a of the blade 4 under the pressure contact force, as shown in FIG. Blade receiving spring 17 until the flared portions 17d, 17d of the receiving spring 17 come into contact with the flared portions 12b, 12b.
17 is displaced relative to the housing 12. As a result, the connecting piece
A gap of a predetermined amount is formed between 17c and the bottom surface of the blade receiving spring accommodating portion 12a. Then, the widened portions 12b, 12b
17d is expanded to reduce the pressure contact force of the pressure contact portions 17a, 17a, so that the housing 12 can be rotated with a relatively small force, and as shown in FIG.
Remove from 1.

Next, a second embodiment of the present invention will be described with reference to FIGS.
Description will be made based on 0. This is different from the previous embodiment in the shape of the fitting recess 4a of the blade 4. That is, the fitting recess 4a is formed such that the inner surface 4c on the tip end side thereof is positioned substantially at right angles to the flat surface of the blade receiving spring 17. In the present embodiment, the base end side of the fitting recess 4a is the inclined surface 4b.

The operation of connecting and attaching and detaching the electric device 11 of this thing is performed in the same manner as in the first embodiment, and the state of the blade 4 and the blade receiving spring 17 is as shown in FIGS. The latter is shown in Fig. 8 (c) and (d). In this case, since the inner surface 4c on the tip side is substantially perpendicular to the flat surface of the blade receiving spring 17, the retaining action for the press contact portion 17a becomes more reliable.

If the pressing force of the blade receiving spring 17 is increased, the fitting recess 4a of the blade 4 may be omitted. Also, a blade
If the mechanical strength of 4 is not required so much, the fitting recess 4a may be provided over the entire width of the blade 4.
Further, the fitting recess 4a of the blade 4 may be a through hole, in which case the blade 4 can be easily manufactured. Further, in the both embodiments, the electric device is the breaker, but it is needless to say that the electric device can be applied to a contactor, a relay, a switch or the like. Further, the connection mounting structure of the present invention,
Although it is suitable for use in a distribution board, it is not limited to a distribution board in a narrow sense, but can be applied to a distribution board in a broad sense, that is, various switch boxes and the like.

[0035]

According to the connection mounting structure for an electric device according to the first aspect of the present invention, when the electric device is detached, that is, when the plug blade is pulled out, the expanding portion of the housing expands the tip expanding portion of the blade receiving spring. Since the pressure contact force of the blade receiving spring with respect to the blade is reduced, the work of removing the electric device can be facilitated even if the pressure contact force of the blade is increased.

In addition to the effects of the first aspect of the present invention, in the connection mounting structure for an electric device according to the second aspect, when the blade is inserted into the blade receiving spring by a predetermined amount, the pressure contact portion of the blade receiving spring exerts a pressure contact force. Since it fits in the fitting recess in this state, a good feeling of completion of installation is obtained at that time, and the fitting recess acts as a retainer against the pressure contact portion of the blade receiving spring, so that the electrical equipment is connected and mounted. Retention strength is improved.

According to the connecting and mounting structure of the electric device of the third aspect, in addition to the function and effect of the second aspect, the retaining action for the press contact portion becomes more reliable.

According to the connecting and mounting structure of the electric device of the fourth aspect, in addition to the effect of the second or third aspect, the strength of the blade can be increased.

According to the fifth aspect of the connection and attachment structure for an electric device, in addition to the operational effect of the fourth aspect, the blade can be easily manufactured.

[Brief description of drawings]

FIG. 1 is a schematic view of a main part showing a first embodiment of the present invention.

FIG. 2 is an exploded perspective view thereof.

FIG. 3 is a diagram illustrating a connecting and mounting operation of the electric device, and is an explanatory diagram in the middle thereof.

FIG. 4 is a diagram illustrating a connecting and mounting operation of the electric device and is an explanatory diagram at the time of completion thereof.

[Fig. 5] Fig. 5 is a schematic diagram showing the main parts of connection and attachment / detachment operation of the electric device. (A) is in the middle of installation, (b) is at the completion of installation, (c) is in the middle of removal, and (d) is It is explanatory drawing of each state at the time of completion of removal.

FIG. 6 is an exploded perspective view of the blade and the blade receiving spring.

FIG. 7 is a perspective view of the blade and the blade receiving spring.

FIG. 8 is a schematic view showing the main parts of the connecting / removing operation of the electric device of the second embodiment of the present invention, where (a) is in the middle of mounting, (b) is at the completion of mounting, and (c) is During removal, (d) is an explanatory diagram of each state at the time of completion of removal.

FIG. 9 is an exploded perspective view of the blade and the blade receiving spring.

FIG. 10 is a perspective view of the blade and the blade receiving spring.

FIG. 11 is an exploded perspective view of a conventional example.

FIG. 12 is a schematic diagram of a main part thereof.

FIG. 13 is a perspective view of the blade and the blade receiving spring.

FIG. 14 is an exploded perspective view of the blade and the blade receiving spring.

[Explanation of symbols]

 1 Connection Mounting Means 2 Insulation Base 3 Conductor Bar 4 Blades Connected to the Conductor Bar 4a Blade Insertion Recess 4b Inclined Surface Forming Insertion Recess 4c Inner Tip Side Inner Surface Forming Insertion Recess (Second Embodiment) 5 Locking part 11 Electric device 12 Electric device housing 12a Housing blade receiving spring accommodating part 12b Housing expansion part 15 Housing locked part 16 Housing blade insertion hole 17 Electric device blade receiving spring 17a Blade receiving spring Pressure contact part 17b Blade-bearing spring facing piece 17c Blade-bearing spring connecting piece 17d Blade-bearing spring flared portion

Claims (5)

[Claims] 1. An insulating base, a plug blade for electrically connecting to an electric device, which are connected to each other, and a conductor bar connected to a power source disposed on the insulating base, together with the plug blade. Connection attachment means having a locking portion for locking a part of a housing of an electric device connected to an insulating base for attaching the electric device to the conductor bar; The housing to be engaged with the locked portion and the blade insertion hole, and the pressure contact portion is pressed against the blade inserted through the blade insertion hole, and is electrically connected to the main body of the electric device. An electric device having a blade receiving spring housed in a housing, and a connecting and mounting structure of an electric device comprising: It is housed in the housing so that it can be moved a predetermined amount in the blade insertion direction, A connection mounting structure for an electric device, wherein an enlarged portion is formed inside a housing for inserting a blade into a blade insertion hole, the blade receiving spring having a widened front portion. 2. The connection mounting structure for an electric device according to claim 1, wherein the plug blade is formed with a fitting recess into which a pressure contact portion of a blade receiving spring is fitted. 3. The connection mounting structure for an electric device according to claim 2, wherein an inner surface of the fitting recess at the tip side is formed substantially at a right angle to the flat surface of the blade receiving spring. 4. The connection mounting structure for an electric device according to claim 2, wherein the plug blade has a lateral width larger than that of the blade receiving spring, and a lateral width of the fitting recess is substantially equal to that of the blade receiving spring. . 5. The connection mounting structure for an electric device according to claim 4, wherein the fitting recess is a through hole.