JP3103489B2 - Fuse mating detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for detecting whether or not a fuse is correctly fitted to an appropriate position of a fuse box.

[0002]

2. Description of the Related Art FIG. 14 shows a conventional fuse fitting structure. In the figure, a fuse 1 is composed of a case 1A forming a fuse body and a fusible body 2 housed therein.
And a cover 4 for closing the opening 3 of the case 1A. Male terminals 2A and 2A extending from both ends of the fusible body 2 project from the lower end of the case 1A. The cover 4 is fixed to the case 1A by the lock portion 5 so as not to move. Also, the fuse mounting part of the fuse box 8
The female terminal 9 is accommodated with the terminal insertion side facing upward. Then, as shown in the figure, the fuse 1 is mounted on the fuse box 8 by fitting the terminal 2A of the fuse 1 into the female terminal 9 on the fuse box 8 side.

[0003]

By the way, conventionally,
There is no particular means for clearly confirming whether or not the fuse 1 has been fitted to the proper position after the operation, and it was only possible to visually determine whether or not the case 1A has hit the fuse box 8. For this reason, it was difficult to surely confirm it, and in particular, when the abutting portion was not visible, it was almost impossible to confirm it.

The present invention has been made in view of the above circumstances, and has as its object to provide a fuse fitting detection device which can easily and surely detect whether or not a fuse is fitted at an appropriate position.

[0005]

According to a first aspect of the present invention, a fuse is mounted to a fuse mounting portion of a fuse box from a fixed fitting direction to thereby fit a fuse connected to a terminal on the fuse box side. A slide member that is slidably provided in a main body portion of the fuse in a direction intersecting the fitting direction and that slides in one direction from an original position to project one end outward. A wall provided adjacent to a fuse mounting portion of the fuse box, and one end of the slide member abutting to prevent the slide member from sliding in the one direction; and a wall provided on the wall, One end of the slide member when the slide member is slid in the one direction in a state where a fuse is mounted at an appropriate position of the fuse mounting portion. Characterized in that comprising the opening for receiving the.

According to a second aspect of the present invention, there is provided the fuse fitting detecting device according to the first aspect, wherein the one end of the slide member and the opening are connected to each other when the one end is received in the opening. An engaging portion for engaging is provided.

According to a third aspect of the present invention, there is provided the fuse fitting detecting device according to the first or second aspect, wherein a second fuse mounting portion is provided adjacent to a side of the fuse mounting portion opposite to the wall. When the slide member is at the original position in a state where a fuse is mounted on the fuse mounting portion, the other end of the slide member protrudes into a fuse mounting path for the second fuse mounting portion. I do.

According to a fourth aspect of the present invention, there is provided the fuse fitting detecting device according to any one of the first to third aspects, wherein the slide member is a cover for closing an opening of a main body of the fuse. It is characterized by.

According to a fifth aspect of the present invention, there is provided the fuse fitting detecting device according to the fourth aspect, wherein the cover and the main body are provided with a mutually locking portion and a locked portion, respectively. A slide margin is provided between the lock portion and the locked portion, the slide allowance allowing the cover to slide by a size that allows the one end to be inserted into the opening.

[0010]

According to the first aspect of the present invention, when the fuse is not mounted at an appropriate position in the fuse box, the slide member cannot slide in one direction because one end of the slide member abuts against the wall. , It can be detected that the fuse is not mounted at an appropriate position. In addition, when the fuse is mounted at an appropriate position in the fuse box, the sliding member can be slid in one direction and one end thereof can be inserted into the opening in the wall. Can be detected.

According to the second aspect of the present invention, when the one end of the slide member is inserted into the opening provided in the wall, the engagement portions engage with each other, so that the slide member does not easily come off.

According to the third aspect of the present invention, when the fuse is not properly mounted on the fuse mounting portion of the fuse box, the slide member cannot slide in one direction. It protrudes toward the fuse mounting part. Similarly, even if the fuse is mounted at an appropriate position, when the slide member is not slid in one direction, the other end of the slide member protrudes toward the second mounting portion. Therefore, if an attempt is made to mount a fuse on the second fuse mounting portion, the fuse interferes with the other end of the slide member provided on the previously mounted fuse and cannot be mounted properly. For this reason, because the fuse next to the fuse cannot be mounted, the previously mounted fuse is not correctly fitted, or even if it is fitted correctly, the slide member is inserted into the fitting confirmation position (one end is inserted into the opening. Position).

If the previously mounted fuse is fitted at an appropriate position and one end of the slide member is fitted into an opening provided in the wall, the other end of the slide member is retracted. The adjacent fuse can be mounted without being disturbed by the slide member. Therefore, it can be understood from this that the previously mounted fuse is mounted at an appropriate position.

According to the fourth aspect of the present invention, the fitting of the fuse can be detected simply by sliding the cover.

According to the fifth aspect of the present invention, since a necessary slide margin is secured between the lock portion and the locked portion, unnecessary slide can be suppressed while preventing the cover from falling off.

[0016]

An embodiment of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a sectional view of the first embodiment, and FIG. 2 is a perspective view of the first embodiment. A fuse 20 is mounted in a fuse fitting hole (fuse mounting portion) 11 of a fuse box 8. Is shown. 3 and 4 show the configuration of the fuse 20, in which FIG. 3 is a perspective view showing a state in which a cover (sliding member) 22 provided on the fuse 20 is set at an initial position, and FIG. FIG.

First, the fuse 20 will be described.

As shown in FIGS. 3 and 4, the fuse 20 has a prismatic case 21 forming a main body, a fusible body (not shown) housed therein, and a fuse extending from both ends of the fusible body. The case 21 is composed of two plate-shaped male terminals 2A and 2B projecting downward from the lower surface of the case 21 and facing each other, and a plate-shaped cover 22 for closing an upper surface opening (not shown) of the case 21.
Here, the cover 22 is slidably provided in a direction (arrows A and B directions) orthogonal to the mounting direction F of the fuse 20.

The outer periphery of the prismatic case 22 has four side surfaces 21a, 21a, 21b, 21b, one of which faces the side surfaces 21a, 2a in parallel with the male terminals 2A, 2A, and the other. Opposing side surfaces 21b, 21b are perpendicular to the plate-like male terminals 2A, 2A. Male terminal 2A, 2A
Lock projections (lock portions) 27 are protrudingly provided on the opposing side surfaces 21b, 21b, which are perpendicular to each other.
7, a lock frame (locked portion) 25 provided on the cover 22.
Are fitted. Thus, the cover 22 is fixed to the upper end of the case 21 so as not to move in the vertical direction.

The lock frame 25 is formed relatively large in the width direction with respect to the lock projection 27, and the slide margin S1 of the cover 22 is secured by the size of the lock frame 25. The sliding directions A and B of the cover 22 are perpendicular to the male terminals 2A and 2B. In this case, when the cover 22 slides, the lock surfaces 25a and 27a of the lock frame 25 and the lock protrusion 27 in the vertical direction function as guide surfaces.

The dimension of the one end 22a and the other end 22b of the cover 22 in the sliding direction is set so as to satisfy the following relationship. That is, when the cover 22 is slid in the one direction A by the above-mentioned sliding margin S1, as shown in FIG.
1a, the other end 22b of the cover 22 is
It retreats inside the first side surface 21a. Also, slide fee S
When the cover 22 is slid in the other direction B by one, as shown in FIG.
And one end 22a of the case 22
Retreats inward from the side surface 21 a of the case 21. Here, the latter position (FIG. 3) is the original position before mounting.

As shown in FIGS. 1 and 2, the fuse box 8 in which the fuse 20 is mounted has a fuse fitting hole 11 in which a lower portion of the case 21 of the fuse 20 is fitted.
A wall 12 is provided upright at a position adjacent to the fuse fitting hole 11. The position of the wall 12 with respect to the fuse fitting hole 11
0 is a position where one end 22a of the cover 22 abuts when 0 is fitted. At a predetermined position of the wall 12, a rectangular opening 13 large enough to receive the one end 22a of the fuse 20 is opened. The position of the opening 13 is determined by the fuse 2
0 is fitted in the fuse fitting hole 11 in an appropriate state,
This is the height at which the cover 22 hits. The bottom surface 11a of the fuse fitting hole 11 is
1 is a surface to which the lower surface abuts, and a pair of female terminals 9 is built in the back of the surface. Each female terminal 9 is arranged parallel to the wall 12.

Next, the operation will be described.

When the fuse 20 is fitted in the fuse fitting hole 11 formed in the fuse box 8, the fuse 2
The male terminal 2A on the 0 side is connected to the female terminal 9 on the fuse box 8 side.
And an electrical connection is achieved. At this time, if the fuse 20 is not fitted at an appropriate position in the fuse fitting hole 11, the end 22a of the cover 22 abuts against the wall 12, so that the cover 22 cannot slide in the direction A. Accordingly, it is possible to detect that the fuse 20 is not fitted at an appropriate position. When the fuse 20 is mounted at an appropriate position, as shown in FIG. 2, the cover 22 can be slid in the direction A to insert the one end 22 a into the opening 13 of the wall 12. Accordingly, it is possible to detect that the fuse 20 is mounted at an appropriate position.

As described above, whether or not the fuse 20 is fitted at an appropriate position can be detected based on whether or not the cover 20 can be slid in the direction A, thereby reliably reducing operation errors. Can be. In particular, here, since the cover 22 is merely slidable, there is no need to add another slide member, and the configuration is simple and the cost increase is minimized. In addition, slide fee S1
Is secured between the lock frame 25 and the lock projection 27, so that unnecessary slide can be suppressed and rattling can be reduced.

[Second Embodiment] As in the second embodiment shown in FIG. 5, an engaging projection 13c and an engaging recess 22c which engage with each other are formed on the outer periphery of one end 22 of the cover 22 and the inner periphery of the opening 13. Is provided, once the one end 22a of the cover 22 is inserted into the opening 13, the engagement protrusion 13c and the engagement recess 22c
Are engaged and the cover 22 does not easily move, so that the cover 22 can be prevented from moving due to transportation or the like. Therefore, even if the fitting state is reconfirmed at the position of the cover 22, an erroneous confirmation does not occur. Further, the engagement of the cover 22 can prevent the fuse 20 from coming off.

[Third Embodiment] FIG. 6 shows the configuration of a fuse 40 in a third embodiment, and FIG. 7 shows a state in which the cover is removed. FIG. 8 is a view taken along the arrow VIII in FIG.
9 is a view showing each example of a cross section taken along the line IX-IX in FIG. The configuration on the fuse box side is the same as that of the first embodiment, and therefore the description is omitted.

The fuse 40 of this embodiment has a case 41 accommodating the fusible material and the male terminals 2A, 2A and a cover 42, and the outer peripheral four side faces 41a, 41 of the prismatic case 41.
a, 41b, 41b, two opposing side surfaces 41b, 41b
(Side surfaces 21b, 21b of the first embodiment)
Further, an engagement concave groove (lock portion) 45 and an engagement convex portion (lock portion) 46 parallel to the sliding directions A and B of the cover 42 are provided. A stopper 47 is provided at a longitudinally intermediate portion of the engagement groove 45.

The cover 42 has guide rails (locked portions) 48 at both side edges.
Are engaged with the engaging concave groove 45 and the engaging convex portion 46, whereby the cover 42 is assembled to the case 41 so as not to move in the vertical direction and to slide in the A and B directions. In this case, as shown in FIGS. 9A and 9B, a moving groove 49 having a predetermined length is provided inside the slide rail 48, and a stopper 47 is located therein. Therefore, only the slide margin S1 determined by the length of the moving groove 49 is equivalent to the cover 4.
2 can slide.

In the case of this structure, the cover 42 can be assembled to the case 41 by elastically deforming the cover 42 as a whole. As shown in (b), if the slopes 47a and 47c are provided in necessary places,
The stopper 47 can be fitted in the moving groove 49 by sliding the cover 42 in the direction B by the action of 47c.

[Fourth Embodiment] FIG. 10 is a perspective view of a fuse 60 according to a fourth embodiment, and FIG. 11 is a sectional view thereof.
In the fourth embodiment, as shown in FIG. 11, female terminals 2B and 2B are provided instead of the male terminals. Case 61
It has a mating terminal insertion hole 65 at the lower end for accommodating the female terminals 2B, 2B. Otherwise, the configuration is the same as that of the first embodiment. The fuse box has male terminals instead of female terminals. This embodiment has the same operation and effect as the first embodiment.

[Fifth Embodiment] FIG. 12 shows a configuration of a fuse box 8 in a fifth embodiment, and FIG. 13 shows a state where a fuse is mounted in the fuse box 8. Here, the fuse 60 of the fourth embodiment is used.

The fuse box 8 is provided with a second fuse fitting hole 11B adjacent to the first fuse fitting hole 11 (corresponding to the fuse fitting hole 11 of the first embodiment). I have. The second fuse fitting hole 11B is located on the side opposite to the wall 12, and has male terminals 9B, 9B on the inner bottom surface. Fuse 60 fitted in first fuse fitting hole 11
When the cover 22 is in its original position, that is, when the cover 22 is not slid in the direction A, the other end 22b of the cover 22 projects into the fuse mounting path 80 into the second fuse fitting hole 11B. ing.

In this embodiment, when the fuse 60 is not properly mounted in the first fuse fitting hole 11 of the fuse box 8, the cover 22 cannot slide in the direction A. , Projecting toward the adjacent second fuse fitting hole 11B. Similarly, even if the fuse 60 is mounted at an appropriate position, when the cover 22 is not slid in one direction, the other end 22b of the cover 22 protrudes toward the second fitting hole 11B. Therefore, the fuse 6 is inserted into the second fuse fitting hole 11B.
If the fuse 60 is to be mounted, the fuse 60 interferes with the other end 22b of the cover 22 of the previously mounted fuse 60, and cannot be mounted properly. Therefore, the next fuse 6
0, the fuse 60 previously mounted is not correctly fitted, or the cover 22 is placed in the fitting confirmation position (the position where the one end 22a is inserted into the opening 13) even if it is fitted correctly. It can be determined whether or not the slide has been performed.

On the other hand, the previously mounted fuse 60 is fitted in an appropriate position, and one end 22a of the cover 22 is
2, the other end 22b of the cover 22 is retracted, so that the adjacent fuse 60 can be mounted without being obstructed by the cover 22. Therefore, it can be seen that the previously mounted fuse 60 is mounted at an appropriate position, and according to the work flow,
It is possible to easily detect the fitting state of the previous fuse.

Although the cover is used as a slide member in the above embodiment, a slide member may be provided in addition to the cover.

[0038]

As described above, according to the first aspect of the present invention, whether or not the fuse is properly fitted is determined by whether or not the slide member can be slid with the fuse mounted. Can be detected. Therefore, the worker can easily and surely know the halfway fit, and can reduce work errors.

According to the second aspect of the present invention, once the one end of the slide member is inserted into the opening of the wall, the engagement portions engage with each other and the slide member does not easily move. Will not be lost and the confirmation state will not be lost. Even if the position of the slide member is reconfirmed, a confirmation error does not occur. In addition, since the slide member is securely engaged with the opening, the fuse is prevented from coming off.

According to the third aspect of the present invention, if the adjacent fuse can be mounted without any trouble, it is known that the mounted state of the previous fuse is appropriate. If the adjacent fuse cannot be mounted, the mounted state of the previous fuse is determined. Is incorrect. Therefore, the fitting state of the previous fuse can be easily detected in accordance with the flow of the work, and the fuse can be corrected immediately.

According to the fourth aspect of the present invention, in the case of a fuse with a cover, it is only necessary to slide the cover, and it is not necessary to provide another slide member.
Therefore, since another member is not required, it is possible to detect the fitting of the fuse without increasing the cost.

According to the fifth aspect of the present invention, only a required amount of slides is possible, so that it is possible to suppress unnecessary rattling.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a first embodiment of the present invention.

FIG. 2 is a perspective view of the first embodiment of the present invention.

FIG. 3 is a perspective view showing an initial state (original position state) of the fuse in the first embodiment of the present invention.

FIG. 4 is a perspective view showing a state in which a fuse slides in the first embodiment of the present invention.

5A and 5B show a second embodiment of the present invention, in which FIG. 5A is a side sectional view, and FIG. 5B is a view taken in the direction of arrow Vb in FIG.

FIG. 6 is a perspective view of a third embodiment of the present invention.

FIG. 7 is a perspective view showing a state in which a cover according to a third embodiment of the present invention is removed.

8 is a view taken in the direction of arrows VIII-VIII in FIG. 6;

FIG. 9A is a sectional view taken along the line IX-IX in FIG.
It is a figure showing (b).

FIG. 10 is a perspective view of a fuse according to a fourth embodiment of the present invention.

FIG. 11 is a sectional view of a fuse according to a fourth embodiment of the present invention.

FIG. 12 is a perspective view of a fuse box according to a fifth embodiment of the present invention.

FIG. 13 is a side sectional view of a fifth embodiment of the present invention.

FIG. 14 is a sectional view of a conventional example.

[Explanation of symbols]

 Reference Signs List 8 fuse box 9 female terminal 11 fuse fitting hole (fuse mounting part) 12 wall 13 opening 13c engaging projection (engaging part) 20 fuse 21 case (main body part) 22 cover (slide member) 22a one end 22b other end 22c Engagement groove (engagement part) 25 Lock frame (locked part) 27 Lock projection (locking part) 40 Fuse 41 Case (main body part) 42 Cover (sliding member) 42a One end part 45 Engagement concave groove (locking part) 46 Engagement convex part (lock part) 48 Slide rail (locked part) 60 Fuse 61 Case (body part) F Fitting direction A Sliding direction (one direction) S1 Slide allowance

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01H 85/22-85/24 H01H 85/30-85/32 H01R 13/64

Claims (5)

(57) [Claims] 1. A device for detecting the engagement of a fuse which is connected to a terminal on the side of the fuse box by being mounted on a fuse mounting portion of a fuse box from a fixed mounting direction, wherein a main body of the fuse is provided. A sliding member that is slidably provided in a direction intersecting the fitting direction and that is slid in one direction from an original position to project one end outward, and adjacent to a fuse mounting portion of the fuse box. And a wall for preventing the slide member from sliding in the one direction by abutting one end of the slide member. The fuse is mounted on the wall at an appropriate position of the fuse mounting portion. And an opening for receiving one end of the slide member when the slide member is slid in the one direction in a state where the slide member is slid. A device for detecting the engagement of a fuse. 2. The device according to claim 1, wherein said one end of said slide member and said opening are engaged with each other when said one end is received in said opening. A device for detecting the engagement of a fuse, comprising a portion. 3. The fuse fitting detection device according to claim 1, wherein a second fuse mounting portion is provided adjacent to a side of the fuse mounting portion opposite to the wall, and the fuse mounting portion is provided. Wherein the other end of the slide member protrudes into a fuse mounting path with respect to the second fuse mounting portion when the slide member is at the original position with a fuse mounted thereon. Detection device. 4. The fuse fitting detecting device according to claim 1, wherein the slide member is a cover for closing an opening of a main body of the fuse. Mating detection device. 5. The device according to claim 4, wherein the cover and the main body are provided with a lock portion and a locked portion, respectively, for locking each other, and A fitting detection device for a fuse, wherein a sliding margin is provided between the locking portion and the sliding portion so as to allow the cover to slide by a size capable of inserting the one end portion into the opening.