JP2023074402A - Electric component housing box - Google Patents

Abstract

To provide an electric component housing box that enables a sub-housing to be easily removed from a main housing while minimizing the space required for removal work.SOLUTION: An electric component housing box comprises an electric component, a sub-housing 30 which houses the electric component and has a lock piece 22, and a main housing 40 which houses the sub-housing 30. The lock piece 22 is locked to the main housing 40, which has a lock part 45 locked to the lock piece 22 with the sub-housing 30 housed to restrict removal of the sub-housing 30. The sub-housing 30 has a retaining part 11 which retains the lock piece 22 in a state in which the lock piece 22 is released from being locked to the main housing 40.SELECTED DRAWING: Figure 6

Description

The present invention relates to an electric component housing box.

2. Description of the Related Art As an example of an electric component housing box in which an electric component such as a fuse is housed in a housing, there is a power supply circuit breaking device disclosed in Patent Document 1. This power supply circuit breaker includes a circuit housing body having a pair of circuit terminals connected to a power circuit, a plug body that closes the power circuit by being fitted with the circuit housing body, and a plug body attached to the plug body and the circuit housing. a lever for engaging and disengaging with the body. The plug body includes a fuse having a pair of terminal portions connectable to a pair of circuit terminals, a housing having a lock arm that engages with notches provided in the terminal portions, and a cover that covers the entrance of the accommodation space of the housing. and have The cover has a restricting portion that restricts the lock arm from being displaced in the direction of releasing the engagement with the terminal portion, thereby preventing the fuse from slipping out of the housing.

Japanese Patent Application Laid-Open No. 2009-37778

In the power circuit breaker, when replacing the fuse, the lever is rotated to remove the plug body from the circuit container, so the removal work is easy, but the lever can be rotated around the power circuit breaker. Space is required, and mounting positions are limited. Therefore, there is a demand for a structure in which the sub-housing such as the plug body can be removed from the main housing such as the circuit housing while minimizing the space required for the removal work.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an electrical component storage box in which a sub-housing can be easily removed from a main housing while minimizing the space required for removal work. It is in.

In order to achieve the aforementioned objects, the electrical component storage box according to the present invention is characterized as follows.
electrical components;
a sub-housing that houses the electrical component and has a locking piece;
a main housing that accommodates the sub-housing,
The locking piece is locked to the main housing,
The main housing has an engaging portion that engages with the engaging piece in a state in which the sub-housing is accommodated to restrict removal of the sub-housing,
The sub-housing has a holding portion that holds the locking piece in a state in which locking of the locking piece with respect to the main housing is released.
Electrical parts storage box.

According to the present invention, it is possible to provide an electrical component storage box in which the sub-housing can be easily removed from the main housing while minimizing the space required for removal work.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following detailed description of the invention (hereinafter referred to as "embodiment") with reference to the accompanying drawings. .

FIG. 1 is a perspective view of an electrical component storage box according to the first embodiment. FIG. 2 is a perspective view of the cover shown in FIG. 1. FIG. 3 is a perspective view of the case shown in FIG. 1. FIG. 4 is a perspective view of the main housing shown in FIG. 1. FIG. FIG. 5 is an enlarged view of a main part in a cross section taken along line AA in FIG. 1. FIG. FIG. 6 is an enlarged cross-sectional view of a main part showing a state in which a locking piece is held by a holding portion in the first embodiment. FIG. 7 is a perspective view of an electrical component storage box according to the second embodiment. FIG. 8 is an enlarged perspective view of a main part showing a state in which a locking piece is held by a holding portion in the second embodiment.

Specific embodiments relating to the present invention will be described below with reference to each drawing.

(First embodiment)
An electrical component storage box 1 according to a first embodiment will be described with reference to FIGS. 1 to 6. FIG. FIG. 1 is a perspective view of an electrical component storage box 1 of the first embodiment. 2 to 4 are perspective views of the cover 10, case 20, and main housing 40 shown in FIG. 1, respectively. FIG. 3 shows a state in which the fuse 9 is accommodated in the case 20. As shown in FIG. FIG. 5 is an enlarged view of a main part in a cross section taken along line AA in FIG. 1. FIG. FIG. 6 is a cross-sectional view of a main part showing a state in which the locking piece 22 is held by the holding portion 11. As shown in FIG. Hereinafter, for convenience of explanation, the front-back direction, the left-right direction, and the up-down direction are defined as shown in FIG. The front-back direction, the left-right direction, and the up-down direction are orthogonal to each other.

The electric component housing box 1 includes a fuse 9 as an example of an electric component, a sub-housing 30 that houses the fuse 9, and a main housing 40 that houses the sub-housing 30. As shown in FIG. The electric component housing box 1 constitutes, for example, a part of an electric connection box mounted on a vehicle such as an automobile. The sub-housing 30 can be removed from the main housing 40 when replacing the fuse 9, for example.

The sub-housing 30 is made of an insulating resin, has a case 20 that accommodates the fuse 9, and a cover 10 attached to the case 20, and is fitted and held in the main housing 40. As shown in FIG.

As shown in FIG. 3 , the fuse 9 has a cylindrical fuse body 91 and a pair of plate-shaped fuse terminals 92 extending to the left and right sides of the fuse body 91 . The fuse terminal 92 extends horizontally from the fuse body 91, bends, and extends downward.

As shown in FIG. 2, the cover 10 includes a cover body 101, a pair of fitting portions 13 provided integrally with the cover body 101 on the left and right sides of the cover body 101, and side walls 12 ( and a pair of holding portions 11 provided on the second side wall).

The cover body 101 has a rectangular box shape with an open bottom, and the inside is shaped to fit the upper portion of the fuse 9 . When the fuse 9 is accommodated in the case 20 and the cover 10 is attached, the cover body 101 covers the upper portion of the fuse body 91 of the fuse 9 and the pair of fitting portions 13 cover the sides of the fuse body 91 . The fitting portion 13 has a substantially rectangular parallelepiped shape, and is provided with locking pieces 131 on each side surface in the front-rear direction, and a holding portion 11 is provided on the outer side wall 12 in the left-right direction.

The locking piece 131 has a cantilever-like arm portion 1311 whose one end is fixed to the lower portion of the fitting portion 13 and extends upward, and whose upper end is a free end. and a protrusion 1312 . The cover 10 is fixed to the case 20 by locking the locking projection 1312 to the locking portion 212 provided on the inner wall of the case 20 , and the cover 10 is prevented from slipping out of the case 20 .

The holding portion 11 is a protrusion that protrudes outward from the side wall 12 of the cover 10. The holding portion 11 is inclined downward as it separates from the side wall 12, and is provided so as to engage and hold a held portion 224 of the locking piece 22, which will be described later. be done. The holding portion 11 is arranged at a position facing the locking portion 45 (see FIG. 4) of the main housing 40 when the sub-housing 30 with the cover 10 attached to the case 20 is housed in the main housing 40 . be.

As shown in FIG. 3, the case 20 is formed in a substantially rectangular cylindrical shape with an open upper surface, and has a fuse accommodating portion 21 that accommodates and holds the fuse 9 in an internal accommodating space, and a pair of fuses that are engaged with the main housing 40 . and a locking piece 22 . The locking pieces 22 are provided on the left and right side walls 211 of the fuse accommodating portion 21, respectively.

The locking piece 22 includes a substantially rectangular plate-like portion 221 extending in the vertical direction, a convex portion 222 locked to the locking portion 45 of the main housing 40 , an operating portion 223 for the operator to pick up, and the holding portion 11 . and a held portion 224 that is held by the . The locking piece 22 is provided on the side wall 211 of the case 20 so as to be flexible in the direction in which the locking portion 45 and the holding portion 11 are opposed to each other.

The plate-like portion 221 has a fixed end connected to the side wall 211 at its lower end and a free end that can be displaced in the left-right direction at its upper end.

The convex portion 222 is a substantially U-shaped rib that protrudes outward from the plate-like portion 221 . The convex portion 222 has a first portion 2221 extending in the front-rear direction of the plate-like portion 221 and a pair of second portions 2222 extending upward from both ends of the first portion 2221 . An upper surface 222 a of the first portion 2221 serves as a locking surface that locks onto the locking portion 45 of the main housing 40 . The distance between the pair of second portions 2222 corresponds to the size of the locking portion 45 in the front-rear direction.

The operation part 223 is a part that connects the upper ends of the pair of second parts 2222 and is a part that is operated by the operator when removing the sub-housing 30 from the main housing 40 . The operating portion 223 has a main body portion 2231 extending in the front-rear direction and a pair of connection portions 2232 extending in the left-right direction from both ends of the main body portion 2231 and connected to the plate-like portions 221, and has a U shape in plan view. By pushing the operation portion 223 inward, the engagement between the protrusion 222 and the engagement portion 45 is released.

The held portion 224 has a width in the front-rear direction corresponding to the width in the front-rear direction of the holding portion 11 , and the inner surface of the plate-like portion 221 is formed so that the thickness gradually decreases toward the upper end of the plate-like portion 221 . Inclined. The locking piece 22 is held by the upper end of the held portion 224 being caught by the holding portion 11 of the cover 10 , and the locking piece 22 is maintained in a state of being released from the main housing 40 .

The main housing 40 has a hollow box 41 having a substantially rectangular parallelepiped shape and having an opening in a part of the upper surface, and a peripheral wall 42 having a substantially rectangular shape in a plan view provided so as to surround the opening of the box 41 . . The box 41 is composed of a bottom and a cover that covers the bottom from above, and has a holding portion that holds a pair of relay terminals inside. The peripheral wall 42 defines an accommodation space S in which the sub-housing 30 is accommodated together with a relay terminal holding portion provided inside the box 41 . The peripheral wall 42 has locking portions 45 inside a pair of left and right side walls 43 (first side walls).

The locking portions 45 are locked to the locking pieces 22 in a state where the sub-housing 30 is accommodated in the accommodation space S, thereby restricting the withdrawal of the sub-housing 30 . The locking portion 45 is a projection extending in the front-rear direction on the upper edge of the plate-like portion 44 . The plate-like portion 44 is a portion that forms the center of the side wall 43 in the front-rear direction, and has a lower end fixed to the side wall 43 by two slits that are spaced apart in the front-rear direction and extend in the vertical direction in the side wall 43 , and a free end at the upper end. be done.

The electrical component housing box 1 is assembled according to the following procedure. First, the cover 10 is placed above the case 20 in which the fuse 9 is accommodated, and the cover 10 is lowered toward the case 20 so that the left and right fitting portions 13 are connected to the left and right side walls 211 and the left and right sides of the fuse body 91 . fit between the sides. The cover 10 is attached to the case 20 by engaging the four locking pieces 131 provided on the fitting portion 13 with the four locking portions 212 inside the case 20 .

Next, the sub-housing 30 in which the cover 10 and the case 20 are integrated is inserted from above into the accommodating space S of the main housing 40 shown in FIG. At this time, as shown in FIG. 5, the protrusions 222 of the locking pieces 22 provided on the left and right sides of the case 20 are locked to the respective locking portions 45 of the main housing 40, thereby Removal of the sub-housing 30 is restricted. In the state where the sub-housing 30 is housed in the main housing 40, the fuse 9 has fuse terminals 92 extending into the box body 41, fittingly connected to respective relay terminals, and respectively connected to a pair of relay terminals. The electric wires are electrically connected via the fuse 9 .

An operation for removing the sub-housing 30 from the electric component housing box 1 configured as described above will be described. When replacing the fuse 9, the operator removes the sub-housing 30 from the main housing 40 in the following procedure. In a state in which the locking piece 22 is locked in the locking portion 45, that is, in a state in which the sub-housing 30 is prevented from slipping out of the main housing 40, the operator moves the right operating portion 223 to the inside of the case 20, that is, By pushing leftward in FIG. 5, the locking piece 22 is bent leftward. By pressing the operating portion 223, the convex portion 222 is separated from the locking portion 45 of the main housing 40, and the engagement between the convex portion 222 and the locking portion 45 is released. When the operator pushes the operating portion 223 further inward, the locking piece 22 is further bent, and the upper end of the held portion 224 is positioned closer to the side wall 12 than the lower end of the holding portion 11, as shown in FIG. The portion 224 is hooked and held by the holding portion 11 . In this manner, the operator presses the operating portion 223 of the locking piece 22 provided on the right side of the sub-housing 30, and the held portion 224 is held by the holding portion 11, so that the convex portion 222 and the locking portion The state in which the locking with 45 is released is maintained. At this time, the operator may simultaneously press the operation portion 223 provided on the left side of the sub-housing 30 to hold the left and right locking pieces 22 in the respective holding portions 11, or press and hold the left and right operation portions 223 one by one. You may make the part 11 hold|maintain. Subsequently, the operator pulls the sub-housing 30 upward from the main housing 40 .

If the holding portion 11 is not provided in the electrical component housing box 1, the worker must continue to hold the operation portion 223 of the locking piece 22 during the work of removing the sub-housing 3, otherwise the unlocked state will occur. Therefore, the sub-housing 3 cannot be taken out without pinching it.

On the other hand, according to the electrical component storage box 1 of the present embodiment, since the locking piece 22 is held by the holding portion 11 provided on the cover 10, the locking between the convex portion 222 and the locking portion 45 is released. can be maintained. Therefore, in the operation of removing the sub-housing 30 from the main housing 40, the operator can pull out the sub-housing 30 from the main housing 40 while continuously pinching the locking pieces 22, and the operation can be eliminated. As a result, the sub-housing 30 can be removed by grasping an arbitrary portion. Therefore, the removal work is easier than when the operator removes the sub-housing 30 while manipulating the locking pieces 22 by himself/herself. In addition, since the operator can perform the removal work without being restricted by the location where the sub-housing 30 is gripped, workability is improved.

(Second embodiment)
An electrical component storage box 1A of the second embodiment will be described with reference to FIGS. 7 and 8. FIG. FIG. 7 is a perspective view of an electrical component storage box 1A of the second embodiment. FIG. 8 is an enlarged perspective view of a main part showing a state in which the locking piece 22 is held by the holding portion 11A. In FIGS. 7 and 8, the same reference numerals are given to members and parts that are the same as those shown in FIGS.

The electric component storage box 1A of the second embodiment is provided with holding portions 11A on the right and left fitting portions 13 of the cover 10, instead of the holding portions 11 of the electric component storage box 1 of the first embodiment. The holding portion 11A is a concave portion provided in the side wall 12 of the fitting portion 13, and is a U-shaped groove extending in the vertical direction having a width corresponding to the width of the locking piece 22 in the front-rear direction. . As shown in FIG. 8, the holding portion 11A is configured such that the operation portion 223 of the locking piece 22 is pushed inward, the plate-like portion 221 is bent, and the pair of connecting portions 2232 abut against the inner side surface of the holding portion 11A. The locking piece 22 is held by press-fitting the operating portion 223 into the holding portion 11A.

As described above, according to the electrical component storage box 1A of the second embodiment, the holding portion 11A press-fits and retains the locking piece 22, so that the convex portion 222 is held in the same manner as the electrical component storage box 1 of the first embodiment. and the locking portion 45 can be maintained in a unlocked state. Therefore, the removal work is easier than when the operator removes the sub-housing 30 while manipulating the locking pieces 22 by himself/herself. In addition, since the operator can perform the removal work without being restricted by the location where the sub-housing 30 is gripped, workability is improved.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, numerical value, form, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved. In the above embodiment, an example in which the electrical component is the fuse 9 was shown, but the electrical component may be various sensor components or the like. In the first embodiment, the held portion 224 of the locking piece 22 is hooked and held by the holding portion 11 protruding from the side wall 12 of the cover 10. The portion 11 may be press-fitted and held.

Here, the characteristics of the electric component storage box according to the embodiment of the present invention described above are summarized and listed briefly in [1] to [6] below.

[1] an electrical component (fuse 9);
a sub-housing (30) containing the electrical component and having a locking piece (22);
A main housing (40) that accommodates the sub-housing,
The locking piece (22) is locked to the main housing,
The main housing (40) has an engaging portion (45) that engages with the engaging piece in a state in which the sub-housing is accommodated to restrict removal of the sub-housing,
The sub-housing has holding portions (11, 11A) that hold the locking pieces in a state in which locking of the locking pieces with respect to the main housing is released,
Electrical component storage box (1, 1A).

According to the electric component storage box having the configuration [1] above, the locking pieces provided on the sub-housing are locked to the locking portions provided on the main housing, thereby restricting the withdrawal of the sub-housing. The unlocked state is maintained by the holding portion holding the locking piece. Therefore, by lifting the sub-housing in the unlocked state, the sub-housing can be easily removed from the main housing. Therefore, there is no need to provide a lever for the removal operation, and the sub-housing can be removed from the main housing as long as there is a space for pulling out the sub-housing, thus minimizing the space required for the removal operation.

Further, according to the electrical component storage box having the configuration [1], the holding portion provided in the sub-housing holds the locking piece to maintain the state in which the locking with respect to the main housing is released. Therefore, the sub-housing can be pulled out from the main housing without the operator having to perform an operation for maintaining the unlocked state, such as continuously pinching the locking piece. Therefore, the removal work is easier than when the operator pulls out the sub-housing while continuing to operate the locking piece. In addition, since the worker can perform the removal work without being restricted by the location where the sub-housing is gripped, workability is improved.

[2] The main housing (40) has a first side wall (side wall 43) inside which the locking portion (45) is provided,
The sub-housing (30) has a second side wall (side wall 12 of the cover 10) provided with the holding portions (11, 11A) on the outside,
The locking portion (45) and the holding portions (11, 11A) are arranged at positions facing each other in the housed state in which the sub-housing (30) is housed in the main housing (40),
The locking piece (22) is provided flexibly in a direction in which the locking portion and the holding portion face each other.
An electrical component storage box (1, 1A) having the configuration of [1] above.

According to the electric component storage box having the configuration [2] above, the locking piece locked by the locking portion is deflected and held by the holding portion, so that the locking piece and the locking portion are engaged with each other. You can maintain the state in which the stop has been released. For example, if the sub-housing extending in one direction is provided with locking portions and lock structures of locking pieces at both ends in the longitudinal direction, it is only necessary to provide the holding portion at one end. According to this configuration, even if the size of the sub-housing is such that the operator cannot grasp both ends of the sub-housing with one hand, the operator can hold the locking piece on the one end side in the holding portion. Therefore, the sub-housing can be taken out from the main housing with one hand while releasing the lock at the other end.

In addition, even when lock mechanisms are provided at three or more locations and the sub-housing is firmly locked to the main housing, if each lock mechanism is provided with a holding portion, the locking pieces can be removed. The unlocked state can be maintained by being held by the holding portion. Therefore, the operator does not need to remove the sub-housing from the main housing while continuing to press the locking piece with his or her fingers, which improves workability.

[3] The main housing (40) has a pair of first side walls (side walls 43) facing each other,
The sub-housing (30) is
a pair of the second side walls (side walls 12 of the cover 10) facing each other;
a third side wall (side wall 211 of the case 20) provided with the locking piece on the outside;
a pair of locking pieces;
and a pair of holding portions,
The pair of locking pieces (22) are provided on each of the pair of third side walls, respectively,
The pair of holding portions (11, 11A) are respectively provided on the pair of second side walls,
The electrical component storage box (1, 1A) according to [2] above.

According to the electric component storage box having the configuration [3], the pair of locking pieces and the holding portions are provided on the wall portions facing each other, so that the sub-housing can be securely locked to the main housing. In addition, depending on the distance between the opposing wall portions, after the worker releases the locking of both wall portions simultaneously with one hand, or after releasing the locking of the wall portions one by one, the worker can grab an arbitrary portion and pull the sub-housing from the sub-housing. can be removed.

[4] The holding portion (11) is a protrusion projecting outward from the second side wall (side wall 12 of the cover 10),
The locking piece (22) is held by being caught by the projection.
An electrical component storage box (1) according to the above [2] or [3].

According to the electrical component storage box having the configuration [4], the locking piece is held by being caught by the projection, so the unlocked state can be maintained.

[5] The holding portion (11A) is a recess provided in the second side wall,
The locking piece (22) is press-fitted and held in the recess,
The electric component housing box (1A) according to the above [2] or [3].

According to the electrical component storage box having the configuration [5], the locking piece is press-fitted into the concave portion and held, so that the unlocked state can be maintained.

[6] The sub-housing has a body portion (case 20) that houses the electrical components, and a lid portion (cover 10) attached to the body portion,
The locking piece (22) is provided on the main body,
The holding portion (11, 11A) is provided in the lid portion,
The electrical component storage box (1, 1A) according to any one of [1] to [5] above.

According to the electrical component storage box having the configuration [6], the locking piece and the holding portion are provided on the main body portion and the lid portion, respectively, so that the electrical component storage box can be easily manufactured without complicating the mold.

1, 1A electric component housing box 9 fuse 10 cover 11, 11A holding portion 12 side wall (second side wall)
20 Case 22 Locking piece 30 Sub-housing 40 Main housing 43 Side wall (first side wall)
45 locking portion 211 side wall (third side wall)

Claims (6)

electrical components;
a sub-housing that houses the electrical component and has a locking piece;
a main housing that accommodates the sub-housing,
The locking piece is locked to the main housing,
The main housing has an engaging portion that engages with the engaging piece in a state in which the sub-housing is accommodated to restrict withdrawal of the sub-housing,
The sub-housing has a holding portion that holds the locking piece in a state in which locking of the locking piece with respect to the main housing is released.
Electrical parts storage box. The main housing has a first side wall inside which the locking portion is provided,
The sub-housing has a second side wall provided with the holding portion on the outside,
The locking portion and the holding portion are arranged at positions opposed to each other in an accommodated state in which the sub-housing is accommodated in the main housing,
The locking piece is provided flexibly in a direction in which the locking portion and the holding portion face each other,
The electrical component storage box according to claim 1. The main housing has a pair of first side walls facing each other,
The sub-housing is
a pair of second side walls facing each other;
a third side wall provided with the locking piece on the outside;
a pair of locking pieces;
and a pair of holding portions,
the pair of locking pieces are provided on each of the pair of third side walls, respectively;
The pair of holding parts are provided on each of the pair of second side walls, respectively.
The electrical component storage box according to claim 2. The holding portion is a protrusion projecting outward from the second side wall,
The locking piece is held by being caught by the projection.
4. The electrical component storage box according to claim 2 or 3. The holding portion is a recess provided in the second side wall,
The locking piece is press-fitted and held in the recess,
4. The electrical component storage box according to claim 2 or 3. The sub-housing has a main body portion that accommodates the electric component and a lid portion attached to the main body portion,
The locking piece is provided on the main body,
The holding portion is provided on the lid portion,
The electrical component storage box according to any one of claims 1 to 5.

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