JP6460438B2 - Fuse holder - Google Patents

Description

  The present invention relates to a fuse holder in which a plurality of fuses are accommodated in a replaceable manner.

  In order to test an electric circuit, the electric circuit may be bypassed with a jumper wire or the like to check the transmission of an alarm signal. At this time, a fuse is used to prevent an excessive current from flowing into the jumper line. In this case, a fuse holder is used so that the fuse can be easily replaced.

  However, since the current capacity is set for the fuse, it is necessary to use a fuse having an appropriate current capacity according to the electric circuit to be tested. For this reason, when the current capacity of the electric circuit to be tested cannot be confirmed in advance, it is necessary to carry a plurality of fuses having different current capacities to the work place. Then, it is necessary to confirm the current capacity of the electric circuit to be tested at the work place, select an appropriate fuse, and attach it to the fuse holder. However, since the fuse itself is small, it may be difficult to check the current capacity displayed on the fuse body. Moreover, the fuse may be lost while being carried to the work place, or may be accidentally dropped and damaged when the fuse is replaced at the work place.

  A technique related to a jumper wire with a fuse is known in which an alligator clip is connected to one end of each lead wire, and the other end of each lead wire is connected to a terminal of a fuse holder (for example, a patent) Reference 1). It also has a fuse housing, a polygonal cylinder arranged inside the fuse, and a rotation knob required to rotate the polygonal cylinder from the outside. On each surface of the cylinder, there are cylinder side contact terminals at both ends. A technique relating to a fuse having a fuse element that can be used a plurality of times is known between them (for example, see Patent Document 2).

Japanese Utility Model Publication No. 07-005268 JP 2001-325877 A

  However, since the techniques described in Patent Documents 1 and 2 are both small in size, it may be difficult to check the current capacity displayed on the fuse body. Moreover, the fuse may be lost while being carried to the work place, or when the fuse is replaced at the work place, the fuse may be accidentally dropped and damaged. In addition, it is necessary to carry a plurality of fuses having different current capacities to the work place.

  Accordingly, the present invention provides a fuse holder that solves the above problems and does not require a plurality of fuses having different current capacities to be carried to the work place, and does not require replacement of the fuses at the work place, so that the electric capacity can be easily confirmed. The purpose is to do.

In order to achieve the above-mentioned object, the invention according to claim 1 is a fuse holder in which a plurality of fuses are accommodated in a replaceable manner, and is cylindrical, and the inside is accommodated by a partition wall along the axial direction. A main body partitioned into a chamber; a lid that is openable and closable on one end side in the axial direction of the main body; and that is slidable with respect to the main body; A first conductive portion that can be electrically connected to the first, a second conductive portion that is disposed on the other axial end side of the main body and can be electrically connected to the fuse, and disposed in each of the storage chambers. A plurality of fuses having at least one different current capacity, and the lid is rotated in a state of being attached to the main body, and the first conductive portion and any of the fuses and the second conductive The part is electrically connected, so that the desired current capacity Obtained, the body, the fuse that is housed in the housing chamber is formed of a transparent material to allow confirmation, or the first conductive portion and the viewing window so fuses can see connected is provided, said body A cylindrical guide portion for supporting each fuse separately is provided on the second conductive portion side, and a spring for urging each fuse toward the lid side is provided on the guide portion. A fuse holder characterized by the above.

  According to the present invention, a desired current capacity can be obtained by bringing the first conductive portion into contact with any of the fuses.

According to a second aspect of the present invention, in the fuse holder according to the first aspect, the fuse is colored with a different color for each current capacity .

  According to a third aspect of the present invention, in the fuse holder according to the first or second aspect, an external terminal is electrically connected to each of the first conductive portion and the second conductive portion. It is characterized by.

  According to the first aspect of the present invention, since any one of the fuses disposed in the main body is in contact with the first conductive portion, a desired current capacity can be obtained. This eliminates the need to carry a plurality of fuses having different current capacities to the work place, eliminates the need to replace the fuse at the work place, and reduces labor and time required for the work.

According to the first aspect of the present invention, since at least one of the current capacities of the fuses is different, it is not necessary to carry a plurality of fuses having different current capacities to the work place. In addition, since any of the fuses disposed in the main body is in contact with the first conductive portion, a desired current capacity can be obtained, so that anyone can easily work. Further, when the main body is transparent and the inside can be visually confirmed, it is easy to check the fuse in contact with the first conductive portion. That is, the current capacity of the fuse can be easily confirmed. Further, when a viewing window is provided in the main body, the fuse in contact with the first conductive portion can be confirmed by confirming the color of the fuse visible from the viewing window. For this reason, since it is only necessary to confirm the color of the fuse in contact with the first conductive portion from the viewing window, the current capacity of the fuse can be more easily confirmed. In addition, a cylindrical guide portion for supporting each fuse is provided separately, and a spring for urging each fuse toward the lid side is provided on the guide portion, so that the fuse is inserted into the guide portion and pushed. As a result, it can be securely attached to each storage chamber.

  According to the third aspect of the invention, since it can be easily attached to and detached from the electric circuit to be tested by the external terminal, labor and time required for the work can be reduced.

It is sectional drawing which shows the fuse holder which concerns on Embodiment 1 of this invention. It is sectional drawing which shows the structure inside the main body of the fuse holder of FIG. It is a front view which shows the inner side of the lid | cover of the fuse holder of FIG. It is sectional drawing which shows the internal structure of the main body and lid | cover of a fuse holder of FIG. 1, and a fitting figure at the time of lid rotation. It is sectional drawing which shows the fuse holder of FIG. It is sectional drawing which shows the fuse holder which concerns on Embodiment 2 of this invention.

(Embodiment 1)
Next, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 5 show an embodiment of the present invention. The fuse holder 1 is for testing an electric circuit, bypasses the electric circuit to be tested, and confirms the transmission of an alarm signal or the like. As shown in FIG. 1, the fuse holder 1 mainly includes a main body 2, a lid 3, a first conductive portion 5, a second conductive portion 6, and four fuses 8.

  The main body 2 is made of a transparent and electrically insulating material and has a cylindrical shape. One end side in the axial direction is open, and the bottom surface portion 2a on the other end side in the axial direction is closed with the same material as the main body 2. As shown in FIG. 2, the inside of the main body 2 is partitioned into four storage chambers 22A, 22B, 22C, and 22D by partition walls 21A, 21B, 21C, and 21D along the axial direction. As shown in FIG. 2, the partition walls 21 </ b> A, 21 </ b> B, 21 </ b> C, 21 </ b> D are disposed on the inner peripheral wall of the main body 2 and extend toward the center of the main body 2. That is, the front ends of the partition walls 21A, 21B, 21C, and 21D do not contact each other, and a space is formed.

  The storage chamber 22A is surrounded by the partition walls 21D and 21A and the inner peripheral wall of the main body 2, the cross-sectional shape is a fan shape, and the storage chamber 22B is surrounded by the partition walls 21A and 21B and the inner peripheral wall of the main body 2 The storage chamber 22C is surrounded by the partition walls 21B and 21C and the inner peripheral wall of the main body 2, the cross-sectional shape is fan-shaped, and the storage chamber 22D includes the partition walls 21C and 21D and the main body 2. The cross-sectional shape is fan-shaped.

  As shown in FIG. 1, cylindrical guide portions 23A, 23B for supporting fuses 8A, 8B, 8C, 8D accommodated in the respective accommodation chambers 22A, 22B, 22C, 22D are provided on the bottom surface portion 2a in the main body 2. , 23C (not shown) and 23D (not shown) are provided. In addition, springs 24A, 24B, 24C, and 24D that are urged toward the opening side from the bottom surface portion 2a are disposed on the guide portions 23A, 23B, 23C, and 23D, respectively. The fuses 8A, 8B, 8C, and 8D can be securely attached to the storage chambers 22A, 22B, 22C, and 22D by inserting and pushing the fuses 8A, 8B, 8C, and 8D into the guide portions 23A, 23B, 23C, and 23D.

  A slide groove that is slightly larger than the convex portion of the lid 3 to be described later is formed on the inner peripheral surface portion on one end side in the axial direction in the main body 2, and the lid 3 extends along the slide groove. That is, it is rotatable along the inner peripheral surface portion of the main body portion 2. Further, recesses 2A, 2B, 2C, and 2D are formed along the axial direction from the slide groove of the lid 3 toward the opening. The recesses 2A, 2B, 2C, and 2D are formed at positions where any one of the fuses 8A, 8B, 8C, and 8D is not in contact with the first conductive portion 5, and the fuses 8A, 8B, 8C, and 8D are formed. The lid 3 can be attached and detached only when the first conductive portion 5 is not electrically connected to any one of the above. The lid 3 can be removed from the main body 2 when the convex portions 31A, 31C, 31D, and 31F of the lid 3 are located at the positions of the concave portions 2A, 2B, 2C, and 2D.

  As shown in FIGS. 1 to 3, the lid 3 is made of a substantially disk-shaped material having electrical insulation, and is set to a size and a shape that can be freely attached to and detached from the opening on one end side in the axial direction of the main body 2. ing. Specifically, the lid 3 has a large-diameter portion and a small-diameter portion, and the small-diameter portion is detachably fitted into the opening on one end side in the axial direction of the main body 2. The lid 3 includes a shaft 4 having a length equivalent to that of the main body 2 and a first conductive portion 5 that can be electrically connected to any one of the fuses 8A, 8B, 8C, and 8D. By rotating, the fuse can be switched without removing the lid.

  As shown in FIG. 2, the shaft 4 is disposed at the center of the small-diameter portion of the lid 3 and has a square cross section, a length equivalent to the length of the main body 2, and a material having electrical insulation. It is configured. That is, the length of the shaft 4 is set such that the tip portion of the shaft 4 abuts on a second conductive portion 6 described later in a state where the lid 3 is fitted to the main body 2.

  As shown in FIGS. 2 and 3, the first conductive portion 5 is disposed in the small diameter portion of the lid 3, and fuses 8 </ b> A, 8 </ b> B disposed in the respective accommodation chambers 22 </ b> A, 22 </ b> B, 22 </ b> C, 22 </ b> D of the main body 2. , 8C, 8D are electrically connected. The first conductive portion 5 is set to a position and size that can be electrically connected to the fuses 8A, 8B, 8C, and 8D disposed in the respective accommodation chambers 22A, 22B, 22C, and 22D of the main body 2. . Then, the first conductive portion 5 is rotated every 90 ° so as to contact any of the fuses 8A, 8B, 8C, and 8D disposed in the respective storage chambers 22A, 22B, 22C, and 22D. Current capacity of

  As shown in FIG. 1, the second conductive portion 6 is disposed on the bottom surface portion 2 a of the main body 2, and is set to a size and shape that closes the opening on the other axial end side of the main body 2. ing. The fuses 8A, 8B, 8C, 8D disposed in the respective storage chambers 22A, 22B, 22C, 22D can be connected, and the fuses 8A, 8B, 8C, 8D that are in close contact with the first conductive portion 5 are connected. Any one of them is electrically connected to the second conductive portion 6.

  The four fuses 8A, 8B, 8C, and 8D have different current capacities by two. Specifically, for example, the current capacities of the fuses 8A and 8C are 1A, and the current capacities of the fuses 8B and 8D are 0.5A. Is set to The fuses 8A, 8B, 8C, and 8D are colored differently for each current capacity, where 1A is colored red and 0.5A is colored blue. That is, the fuses 8A and 8C are colored red, and the fuses 8B and 8D are colored blue.

  An alligator clip 110 as an external terminal is electrically connected to the first conductive portion 5 via a cable 111. This alligator clip 110 is for detachably connecting to a circuit to be tested.

  An alligator clip 120 as an external terminal is electrically connected to the second conductive portion 6 via a cable 121. This alligator clip 120 is for detachably connecting to a circuit to be tested.

  In this embodiment, it is assumed that the fuse 8A is arranged in the accommodation chamber 22A, the fuse 8B is arranged in the accommodation chamber 22B, the fuse 8C is arranged in the accommodation chamber 22C, and the fuse 8D is arranged in the accommodation chamber 22D. Here, the first conductive portion 5 is electrically connected to the fuse 8A housed in the housing chamber 22A.

  Next, the usage method and operation of the fuse holder 1 will be described. When testing the electric circuit, the worker carries the fuse holder 1 to the work place.

  First, the operator confirms the current capacity of the electric circuit to be tested, and confirms that the fuse having a current capacity suitable for the electric circuit, in this case, the fuse 8A or 8C having a current capacity of 1A is used. Then, the operator confirms the main body 2 of the fuse holder 1 and confirms that the red fuse, that is, the red fuse 8A having a current capacity of 1A, is in contact with the first conductive portion 5. Is done. At this time, the fuse 8A is arranged in the accommodation chamber 22A, the fuse 8B is arranged in the accommodation chamber 22B, the fuse 8C is arranged in the accommodation chamber 22C, and the fuse 8D is arranged in the accommodation chamber 22D.

  And the alligator clips 110 and 120 are attached to an electric circuit.

  When the test is complete, the alligator clips 110, 120 are removed from the electrical circuit.

  Subsequently, the operator confirms the current capacity of the next electric circuit to be tested, and uses a fuse having a current capacity suitable for the electric circuit, in this case, a fuse 8B or 8D having a current capacity of 0.5 A. It is confirmed. Then, the operator confirms the main body 2 of the fuse holder 1 and confirms that the red fuse, that is, the red fuse 8A having a current capacity of 1A, is in contact with the first conductive portion 5. Is done.

  Therefore, by rotating the lid 3, the convex portions 31A, 31C, 31D, and 31F of the lid 3 shown in FIG. 3 fitted into the concave portions 2A, 2B, 2C, and 2D of the main body 2 of the fuse holder 1 shown in FIG. Therefore, the fuse can be switched without removing the lid 3.

  Then, the operator confirms the main body 2 of the fuse holder 1, and as shown in FIG. 5, the blue fuse is in contact with the first conductive portion 5, that is, the current capacity is 0.5A. It is confirmed that the fuse 8B is blue.

  And the alligator clips 110 and 120 are attached to an electric circuit.

  When the test is complete, the alligator clips 110, 120 are removed from the electrical circuit.

  As described above, according to the fuse holder 1, any of the fuses 8 </ b> A, 8 </ b> B, 8 </ b> C, and 8 </ b> D disposed in the main body 2 comes into contact with the first conductive portion 5 by rotating the lid 3. By doing so, since a desired current capacity (1 A or 0.5 A) can be obtained, it is not necessary to carry a plurality of fuses having different current capacities to the work place, and replacement of fuses at the work place This eliminates the need for work and reduces the time and effort required for the work. Moreover, since the fuses 8A, 8B, 8C, and 8D can be switched by simply rotating the lid 3 without removing the lid 3, the replacement is easy.

  Moreover, since the current capacity of the fuses 8A and 8C is 1A and the current capacity of the fuses 8B and 8D is 0.5A, there is no need to carry a plurality of fuses having different current capacities to the work place. . Further, when the fuse 8A or 8C is brought into contact with the first conductive part 5 by rotating the lid 3, the current capacity is 1A, and the fuses 8B and 8D are in contact with the first conductive part 5. In such a case, since the current capacity is 0.5 A, anyone can work easily. Even if the work place is a narrow place or a dark place, the work is easy.

  Furthermore, since the alligator clips 110 and 120 can be easily attached to and detached from the electric circuit, labor and time required for work can be reduced.

  Moreover, since the main body 2 is transparent and the inside can be visually confirmed, it is easy to confirm the fuse in contact with the first conductive portion 5. That is, the current capacity of the fuse can be easily confirmed.

(Embodiment 2)
FIG. 6 shows a second embodiment of the present invention. In this embodiment, the main body 2 is made of a material that cannot be visually recognized (opaque), and a viewing window 9 is formed in a part of the main body 2. Different. For this reason, about the structure equivalent to Embodiment 1, the description is abbreviate | omitted by attaching | subjecting the same code | symbol.

  A viewing window 9 is formed in a part of the main body 2 so that the inside of the body 2 can be visually recognized, so that the fuse in contact with the first conductive portion 5 can be visually confirmed. A concave portion (not shown) is formed on the peripheral surface portion on one axial end side of the main body 2, and a convex portion (not shown) that can be engaged with the concave portion is formed on the lid 3. Then, when the concave portion and the convex portion are engaged, the lid 3 is fitted into the main body 2. At this time, the viewing window 9 is in a position where the fuse in contact with the first conductive portion 5 can be visually recognized.

  According to the fuse holder 1, the fuse in contact with the first conductive portion 5 can be confirmed by checking the color of the fuse that can be visually recognized from the viewing window 9. For this reason, since it is only necessary to confirm the color of the fuse in contact with the first conductive portion 5 from the viewing window 9, the current capacity of the fuse can be more easily confirmed.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention, It is included in this invention. For example, in this embodiment, the four fuses 8A, 8B, 8C, and 8D have been described as having two different current capacities, but all four fuses may have different current capacities. In this case, the four fuses 8A, 8B, 8C, and 8D are all colored in different colors.

1 fuse holder 2 main body 21A partition wall 21B partition wall 21C partition wall 21D partition wall 22A storage chamber 22B storage chamber 22C storage chamber 22D storage chamber 3 lid 4 shaft 5 first conductive section 6 second conductive section 7 spring 8A fuse 8B Fuse 8C Fuse 8D Fuse 9 Viewing window 110 Alligator clip (external terminal)
111 Jumper wire 120 Alligator clip (external terminal)
121 Jumper line S Containment room

Claims (3)

A fuse holder in which a plurality of fuses are exchangeably accommodated,
A cylindrical body whose inside is partitioned into a plurality of storage chambers by partition walls along the axial direction;
A lid that is freely openable and closable on one end side in the axial direction of the main body, and is slidable with respect to the main body;
A first conductive portion disposed on the lid and electrically connectable to any one of the fuses;
A second conductive portion disposed on the other axial end side of the main body and electrically connectable to the fuse;
A plurality of fuses disposed in each of the storage chambers and having at least one different current capacity;
With
By rotating the lid attached to the main body and electrically connecting either the first conductive part and the fuse and the second conductive part, a desired current capacity is obtained,
The body, the accommodating fuses the holding chamber is formed of a transparent material to allow confirmation, or the first conductive portion and the viewing window so fuses can see that connection provided et al is,
Cylindrical guide portions that individually support the fuses are provided on the second conductive portion side of the main body, and springs that bias the fuses toward the lid side are disposed on the guide portions. <br/> A fuse holder characterized by that. The fuse is colored with a different color for each current capacity,
The fuse holder according to claim 1. External terminals are electrically connected to the first conductive portion and the second conductive portion, respectively.
The fuse holder according to claim 1 or 2, wherein

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