JP3403570B2 - Fuse holder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse holder for holding a spare fuse in a fuse box of a vehicle, for example.

[0002]

2. Description of the Related Art As described above, a fuse box for a vehicle needs a fuse holder for holding a spare fuse.

5 to 8 show a conventional fuse holder 1, and FIGS. 9 and 10 show a conventional fuse holder 3 disclosed in Japanese Utility Model Laid-Open No. 62-15756.

As shown in these drawings, the fuse 5
Is provided with an insulating coating 7 and a pair of plug terminals 9 and 11 (plug conductors).

The fuse holder 1 shown in FIGS. 5 to 8 can hold four fuses 5, and each holding function has the fuse 5.
Storage chamber 17, a pair of drop-preventing portions 19 and 21, and a mounting portion 2
It is composed of 3 etc.

Each of the fall-preventing portions 19 and 21 has a flexible arm 2.
5, 27 and stopper portions 29, 31, each stopper portion 29, 31 projects in the mutually opposing direction. When the fuse 5 is attached to the fuse holder 1, the insulating coating 7 contacts the stoppers 29 and 31, and the arms 25 and 27 are bent to widen the gap between the stoppers 29 and 31. After the fuse 5 is attached, the stopper portions 29, 31
Returns to its original position.

Further, the mounting portion 23 accommodates the fuse 5 in the accommodation chamber 1
It is arranged so as to be inserted between the plug-in terminals 9 and 11 in a state of being attached to the terminal 7.

The attached fuse 5 has a stopper 29,
The dropout is prevented by 31 and the mounting portion 23.

The fuse holder 3 shown in FIGS. 9 and 10 comprises a housing chamber 33 for the fuse 5, a pair of stopper portions 35 and 37, a pair of flexible locking pieces 39 and 41, and a mounting portion 43. There is.

The fuse 5 mounted on the fuse holder 3
The stoppers 35 and 37 and the mounting portion 43 prevent the stopper from falling off, and the locking pieces 39 and 41 press and fix the attached fuse 5 against the wall surface of the housing chamber 33.

[0011]

However, although the fuse holder 1 has the function of preventing the fuse 5 from falling off as described above, it does not have the fixing function (the rattling prevention function). As shown in FIG. 8, since there is a clearance C between the fuse holder 1 and the fuse 5, the vibration of the vehicle causes the fuse 5 to vibrate between the clearance C and collide with the fuse holder 1. Noise is generated.

On the other hand, in the fuse holder 3, the rattling of the fuse 5 is prevented by the fixing function of the locking pieces 39 and 41 as described above. However, the thickest insulating cover portion 7 of the fuse 5 is configured to be pressed by the locking pieces 39 and 41, and the upper portion of the fuse 5 is suppressed by the stopper portions 35 and 37 as shown in FIG. Locking piece 3 in the closed state
It is pushed and pushed by 9, 41 and installed in an inclined state. Therefore,
It is necessary to increase the size of the accommodation chamber 33, and the dimension W1 of the accommodation chamber 33 shown in FIG. 10 is about twice the thickness of the fuse 5. Thus, the fuse holder 3 becomes large and the number of fuses 5 that can be accommodated in a fixed space is small.

Further, since the fuse 5 is pressed from one side by the locking pieces 39 and 41, when another object collides with it or when a force from the opposite side is received due to vibration or acceleration of the vehicle, The fuse 5 may come off from the fuse holder 3.

In consideration of the above circumstances, it is an object of the present invention to provide a fuse holder capable of preventing the falling of the accommodated fuse and accommodating a large number of fuses in a limited space.

[0015]

According to a first aspect of the present invention, there is provided a fuse holder which detachably holds a fuse having an insulating coating portion and a pair of insertion conductors protruding from the insulating coating portion to the outside. A holder main body having a storage chamber that stores the insulating coating portion in a detachable manner, and a cantilever-like flexibility that pushes and bends by a plug-in conductor when a fuse is mounted and pushes back and fixes the plug-in conductor by a spring force. A pair of the flexible locking pieces, the holder body has a facing wall, and one of the facing walls has a locking piece.
One of the flexible locking pieces protruding toward the other facing wall is installed.
However, if the other side of the opposing wall protrudes toward one of the opposing walls,
One flexible locking piece and the other of the flexible locking pieces that are parallel to each other are provided on the pair of flexible locking pieces so that the directions of the free ends of the two flexible locking pieces are formed in a staggered manner. Stopper is the width of both plug-in conductors
It is characterized in that it contacts the opposite side surface and presses both insertion conductors from the inside.

As described above, in the fuse holder according to the first aspect of the present invention, the flexible locking piece is pushed and bent by the plug-in conductor of the attached fuse, and the plug-in conductor is pushed back and fixed by the spring force. With this fixing function, unlike the conventional fuse holder 1, the rattling of the fuse is prevented, and, for example, the fuse does not vibrate even when the vehicle is vibrated, and noise is generated due to a collision between the fuse and the fuse holder. To be prevented.

Further, since the fuse holder according to the first aspect of the present invention is configured so that the insertion conductor of the fuse is suppressed by the flexible locking piece, the fuse is inclined and accommodated by pressing the insulating coating portion of the fuse. Unlike the fuse holder 3 of No. 1, it is not necessary to enlarge the accommodation chamber. Therefore, a larger number of fuses than the fuse holder 3 can be accommodated in a fixed space.

In addition to this, since the pair of flexible locking pieces are configured to press both the inserting conductors from the inside or the outside, a larger fixing function can be obtained. Further, unlike the conventional fuse holder 3 that presses the fuse from one direction, the fuse holder of the present invention that suppresses the insertion conductors from both directions in this way receives a force such as vehicle vibration or acceleration from any direction. , The fuse never comes off.

Further, by disposing the pair of flexible locking pieces inside the both plug-in conductors, the space between the two flexible locking pieces becomes narrower, and the fuse holder can be made smaller accordingly.

Further, by providing flexible locking pieces separately on one and the other of the opposing walls of the holder main body, and arranging the free ends of both the flexible locking pieces in opposite directions, the flexibility is improved. The flexible range in which the locking pieces are combined is widened, and it is possible to cope with variations in the intervals of the insertion conductors of the fuse.

Further, since the free ends of the two flexible locking pieces are oriented in opposite directions, a thin plug-in conductor is erroneously inserted between each free end and the wall portion of the holder body when the fuse is mounted. It can be avoided.

According to a second aspect of the present invention, in the fuse holder according to the first aspect, the flexible locking piece is provided with a taper portion for guiding the tip of the insertion conductor when the fuse is mounted. With this feature, an effect equivalent to that of the first aspect is obtained.

In addition to this, since the flexible locking piece is provided with the taper portion for guiding the insertion conductor, the fuse can be easily mounted, and the flexible locking piece can be mounted only by mounting the fuse. It can be easily pushed and bent, and the function of fixing the fuse is surely obtained.

The invention of claim 3 is the same as claim 1 or claim 2.
The fuse holder as described above, wherein a stopper is provided on a flexible arm provided on the fuse mounting side, and the stopper is spread by the insulating coating when the fuse is mounted in the accommodation chamber. After the fuse is attached, the stopper part that returns to the original position has a pair of drop-out preventing parts that prevent the fuse from falling off.

This fuse holder has the same effect as that of the first or second aspect of the invention. In addition, in the fuse holder according to the third aspect, the falling prevention portion is provided on the mounting side of the fuse, and the flexible locking piece is provided on the opposite side of the fuse holder. The fall prevention portion and the flexible locking piece prevent the fall.

The invention according to claim 4 is the invention according to claim 3.
The free ends of the pair of flexible locking pieces and the holder.
If you set it so that there is no gap between it and the wall of the
In the wall part facing each free end,
It is characterized by the provision of a narrow groove .

The fuse holder of claim 4 has the same effect as that of the structure of claim 3. In addition to this, by providing a groove that is narrower than the plug-in conductor in the wall of the holder body that faces the free end of the flexible locking piece, it is possible to eliminate the gap between this wall and the free end. Therefore, not only when the free ends of the two flexible locking pieces are oriented in opposite directions, but also when the free ends are formed in the same direction, the insertion conductor is mistakenly inserted between the free end and the wall portion. Can be effectively prevented.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a fuse holder of the present invention will be described below with reference to the drawings. This embodiment has the features of claims 1, 2, 3, and 4.

FIG. 1 shows a fuse holder 51 of this embodiment.
2 is a perspective view showing the fuse holder 51 holding the fuse 5 with a part thereof cut away, and FIGS. 3 and 4 are a plan view and a vertical sectional view of the fuse holder 51 holding the fuse 5, respectively. .

As shown in each of these drawings, the fuse holder 51 can hold four fuses 5, and each holding function has a housing chamber 53 of the fuse 5 and a pair of drop-preventing portions 55.
57 and a pair of flexible locking pieces 59, 61, etc., which are integrally formed with the holder main body 63.

As shown in FIGS. 3 and 4, the fuse 5 is housed in each housing chamber 53. An appropriate gap is provided between the outer periphery of the insulating coating portion 7 of the fuse 5 and the accommodation chamber 53.

The fall-off preventing portions 55 and 57 are respectively composed of flexible arms 65 and 67 and stopper portions 69 and 71, and the stopper portions 69 and 71 project in the mutually opposing directions. Further, the upper portions of the stopper portions 69 and 71 against which the insulating coating portion 7 abuts when the fuse 5 is attached are tapered.

As shown in FIG. 3, the flexible locking pieces 59 and 61 are formed in a cantilever shape to provide flexibility. One of the flexible locking pieces 59 has a wall 73 on one side of the accommodation chamber 53.
It is provided on the (opposing wall), and the other flexible locking piece 61 is provided on the wall portion 75 (opposing wall) on the other side of the accommodation chamber 53.
The flexible locking pieces 59 and 61 are provided with tapered portions 77 and 79, respectively.

The flexible locking pieces 5 are provided on the walls 73 and 75, respectively.
Grooves 81 and 83 are formed at positions facing the free ends of the grooves 9 and 61, and the width W2 of these grooves 81 and 83 (FIG. 3).
Is narrower than the width W3 (FIG. 2) of the insertion terminals 9 and 11 of the fuse 5.

In this way, the fuse holder 51 is constructed.

Next, the operation will be described.

When the fuse 5 is attached to the fuse holder 51, the insulating coating portion 7 contacts the taper portion of the stopper portions 69 and 71, and the arms 65 and 67 are bent so that the stopper portion 69,
Widen the interval of 71. When the fuse 5 is installed,
The elastic force of the arms 65 and 67 causes the stopper portions 69 and 71 to return to their original positions.

In this way, the falling prevention portions 55, 57 and the flexible locking pieces 59, 61 prevent the fuse 5 from falling off.

When the fuse holder 51 is mounted, the insertion terminals 9 and 11 are guided by the tapered portions 77 and 79 and are inserted outside the flexible locking pieces 59 and 61. At this time, each of the flexible locking pieces 59, 61 has a broken line and an arrow 8 in FIG.
As shown by reference numerals 5 and 87, it is sandwiched between the insertion terminals 9 and 11 and bends inward.

The insertion terminals 9 and 11 are pressed and fixed from the inside by the flexible locking pieces 59 and 61 thus bent, and the fixing function prevents the fuse 5 from rattling. Therefore, for example, the fuse 5 does not vibrate even when the vehicle is vibrated, and noise generation due to the collision between the fuse 5 and the fuse holder 51 is prevented.

In addition to this, since the fuse holder 51 is configured to press the insertion terminals 9 and 11 of the fuse 5, the conventional fuse holder 3 that presses the insulating coating portion 7 which is larger than the insertion terminals 9 and 11 is pressed. Unlike the above, it is not necessary to enlarge the accommodation chamber 53. Therefore, the fuse holder 51 can accommodate the fuse 5 that is almost twice as large as that of the fuse holder 3. For example, when used in a fuse box of a vehicle, a large number of fuses 5 can be accommodated in a small space.

Further, since the flexible locking pieces 59 and 61 are provided with the tapered portions 77 and 79 for guiding the insertion terminals 9 and 11, the fuse 5 can be easily mounted and the fuse 5 is simply mounted. The flexible locking pieces 59 and 61 can be surely pressed and bent, and the fixing function of the fuse 5 can be surely obtained.

Further, since the insertion terminals 9 and 11 are configured to be pressed by the pair of flexible locking pieces 59 and 61, the fixing function of the fuse 5 is increased accordingly. Unlike the conventional fuse holder 3 that presses the fuse 5 from one direction, the fuse holder 51 that suppresses both the insertion terminals 9 and 11 from the inside receives force such as vehicle vibration or acceleration from any direction. However, the fuse 5 does not come off.

Since both flexible locking pieces 59 and 61 are formed inside the plug-in terminals 9 and 11, the flexible locking pieces 59 and 61 are formed.
The space between the fuse holders 51 can be reduced.
Can be made that small.

In addition to this, the wall portion 7 of the holder main body 63
As shown in FIG. 3, the flexible locking pieces 59 and 61 are separately provided on the respective parts 3 and 75, and the free ends of the flexible locking pieces 59 and 61 are set in opposite directions. Even if the flexible range is widened and the intervals between the insertion terminals 9 and 11 of the fuse 5 vary, it is possible to cope with the variation.

Further, since the respective free ends are in opposite directions in this manner, it is possible to prevent the thin plug terminals 9 and 11 from being accidentally inserted between the free ends and the walls 73 and 75 when the fuse 5 is mounted. To be

In addition to this, the wall 7 facing each free end
Width (W3) than width (W3) of plug terminals 9 and 11
By providing the narrow grooves 77 and 79 of 2), the wall portion 7
It is possible to eliminate the gap between 3,75 and the free end,
The effect of preventing the insertion terminals 9 and 11 from being accidentally inserted between the free ends and the wall portions 73 and 75 is further improved.

Further, according to the manufacturing method of the present embodiment, the fuse holder 51 as described above can be obtained which can prevent the fuse 5 from falling off and can accommodate a large number of fuses 5.

Further, as described above, the fuse holder 51 accommodates the four fuses 5 arranged in one row. However, in the manufacturing method of this embodiment, the fuse holders are integrally molded. , And the number of fuses per row).

[0050]

As described above, according to the first aspect of the present invention, the fuse is prevented by the drop-out preventing portion provided on the mounting side of the fuse and the flexible locking piece provided on the opposite side. It is prevented from falling off.

Further, due to the fixing function of the insertion conductor pressed and bent by the insertion conductor of the fuse, the rattling of the fuse and the noise caused by the collision between the fuse and the fuse holder are prevented.

Furthermore, the structure of the present invention in which the flexible engaging piece presses the plug-in conductor of the fuse does not require a large accommodating chamber, unlike the conventional example in which the insulating coating of the fuse is pressed. A large number of fuses can be accommodated in the space.

Furthermore, by pressing both plug-in conductors from the inside or the outside with a pair of flexible locking pieces, a larger fixing function can be obtained, and, unlike the conventional fuse holder 3, vibration and acceleration of the vehicle. The fuse does not come off even if it receives force such as.

Further, in the structure in which the pair of flexible locking pieces are formed inside the both plug-in conductors, the interval between the flexible locking pieces is narrowed, and the fuse holder can be made smaller accordingly.

By setting the free ends of the two flexible locking pieces in the opposite directions, the flexible range of the two flexible locking pieces is widened, and it is possible to cope with a fuse in which the intervals between the plug-in conductors vary. .

Further, by arranging the respective free ends in opposite directions, it is possible to avoid accidentally inserting the plug-in conductor between the free end and the wall portion when mounting the fuse.

According to the second aspect of the invention, the taper portion provided on the flexible locking piece for guiding the plug-in conductor facilitates the mounting of the fuse, and only by mounting the fuse, the fixing function of the fuse is surely achieved. Is obtained.

According to the third aspect of the present invention, the stopper portions of the pair of the drop-out preventing portions are spread by the insulating coating portion when the fuse is mounted in the accommodation chamber, and are returned to their original positions after the fuse is mounted. The stopper part surely prevents the fuse from falling off.

Further, the falling-off preventing portion provided on the mounting side of the fuse and the flexible locking piece provided on the opposite side prevent the falling-off of the fuse.

According to the fourth aspect of the present invention, by providing the groove of the holder main body with a width narrower than that of the insertion conductor, when the free ends of both the flexible locking pieces are formed in opposite directions. Of course, even when the free ends are formed in the same direction, it is possible to effectively avoid accidentally inserting the insertion conductor between the free end and the wall portion.

[Brief description of drawings]

FIG. 1 is a perspective view showing a fuse holder according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a fuse holder of FIG.

FIG. 3 is a plan view of the fuse holder of FIG. 1 with a fuse attached.

4 is a vertical cross-sectional view of the fuse holder of FIG. 1 with a fuse attached.

FIG. 5 is a perspective view showing a first conventional example.

6 is a perspective view showing the conventional example of FIG. 5 with a fuse attached by partially cutting away.

FIG. 7 is a plan view of the conventional example of FIG. 5 with a fuse attached.

8 is a vertical cross-sectional view of the conventional example of FIG. 5 with a fuse attached.

FIG. 9 is a perspective view showing a second conventional example.

10 is a cross-sectional view of the conventional example of FIG. 9 with a fuse attached.

[Explanation of symbols]

5 fuse 7 Insulation coating 9, 11 Plug-in terminal (plug-in conductor) 51 fuse holder 53 accommodation room 55, 57 Fall prevention part 59, 61 Flexible locking piece 63 Holder body 65, 67 Flexible arms 69, 71 Stopper 73, 75 wall (opposite wall) 77, 79 Tapered part 81, 83 groove

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-6-231672 (JP, A) Actual opening Sho 57-190640 (JP, U) Actual opening Sho 61-166454 (JP, U) Actual opening Sho 63- 30104 (JP, Y1) S. 59-21505 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01H 85/22 H01H 85/56

Claims (4)

(57) [Claims] 1. A fuse holder that detachably holds a fuse having an insulating coating portion and a pair of plug-in conductors protruding from the insulating coating portion to the outside, the housing holding the insulating coating portion in a removable manner. A holder main body having a chamber; and a cantilever-shaped flexible locking piece that is pressed and bent by a plug-in conductor when a fuse is mounted and pushes back and fixes the plug-in conductor by a spring force. locking piece is provided with a pair, the holder body has opposing walls, which
Flexible to project toward one of the opposing walls toward the other
One of the sex locking pieces is provided, and one opposite wall is provided on the other opposite wall
Flexibility to project toward and parallel to one flexible locking piece
Alternately formed in the direction of the free ends of the two flexible locking pieces provided the other sex locking piece, these pair of flexible retaining pieces
A fuse holder, characterized in that the fuse holders are pressed against the side surfaces of the both insertion conductors from the inside by contacting the side surfaces in the width direction . 2. The fuse according to claim 1, wherein the flexible locking piece is provided with a taper portion that guides the tip of the insertion conductor when the fuse is mounted. holder. 3. The invention according to claim 1 or 2, wherein the flexible arm provided on the fuse mounting side is provided with a stopper portion so as to project the fuse into the accommodation chamber. The fuse holder is characterized in that the stopper portion is spread by the insulating coating portion, and the stopper portion, which has returned to its original position after the fuse is mounted, has a pair of stopper portions for preventing the fuse from falling off. 4. The invention according to claim 3, wherein the clearance between each free end of the pair of flexible locking pieces and the wall portion of the holder main body is set to be eliminated, and each free end is set. A fuse holder characterized in that a groove having a width narrower than that of the plug-in conductor is provided in the wall portion facing the end.