JP2017045510A - Fuse holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fuse holder which allows a low-height fuse or a mini fuse to be usable for a various purposes.SOLUTION: A fuse holder comprises: a pair of connection fittings 11 provided with a clamping part 13 for clamping a fuse 50; and an insulation case body 20 for holding the connection fittings 11. Also, wiring can be connected to the connection fittings 11. As a result, a low-height fuse or a mini fuse can be used for various purposes except for automobiles. If the fuse 50 for direct current is to be used, for example, the low-height fuse or the mini fuse can be easily connected to a circuit with the use of the fuse holder 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a fuse holder for holding a low profile fuse or a mini fuse.

  A large number of fuses are mounted on the electrical junction box of an automobile, and when an overcurrent flows, the fuses are blown to protect the electric circuit. In such an electric junction box of an automobile, a low profile fuse or a mini fuse is widely used (for example, see Patent Document 1).

JP 2013-70561 A

Conventionally, low-profile fuses and mini-fuses have been used as parts dedicated to automobiles and were not supposed to be used for other purposes. However, when DC distribution becomes widespread in the future, it is also conceivable that the usage scene of DC fuses will increase. In this way, when it is desired to use a DC fuse, it is convenient if a low profile fuse or a mini fuse can be used.
Then, this invention makes it a subject to provide the fuse holder for enabling a low profile fuse or a mini fuse to be used for various uses.

  The present invention has been made to solve the above-described problems, and is characterized by the following.

  The invention according to claim 1 is a fuse holder in which a low-profile fuse or a mini-fuse can be mounted, and a pair of connection fittings having a holding portion for holding the fuse, and an insulating case body for holding the connection fitting And a wiring can be connected to the connection fitting.

  According to a second aspect of the present invention, in addition to the feature of the first aspect of the present invention, the insulating case body is provided with a fuse mounting portion into which a fuse can be inserted from above. A fixing hole for attaching the fuse holder with a screw is provided below.

  According to a third aspect of the present invention, in addition to the features of the first or second aspect of the present invention, the connection fitting rises vertically from a base portion to which wiring can be connected and an end portion of the base portion. And a holding groove into which the base portion can be slid. The holding case is formed in the insulating case body.

  The invention according to claim 1 is as described above, and includes a pair of connection fittings provided with a holding portion for holding a fuse, and an insulating case body holding the connection fitting, and wiring to the connection fitting Therefore, a low profile fuse or a mini fuse can be used for various applications other than automobiles. For example, when it is desired to use a fuse for DC, a low-profile fuse or a mini-fuse can be easily connected to a circuit by using this fuse holder.

  The invention according to claim 2 is as described above, and a fixing hole for attaching the fuse holder with a screw is provided below the fuse mounting portion. Therefore, the fuse holder can be easily fixed using the fixing hole. Further, since the fixing hole is provided on the back side of the fuse, the size of the fuse holder can be reduced.

  The invention according to claim 3 is as described above, and the connection fitting includes a base part to which wiring can be connected, and the holding part that rises vertically from an end part of the base part. The insulating case body is formed with a holding groove into which the base portion can be slid. According to such a configuration, the connection fitting can be attached to the insulating case body simply by sliding the base portion into the holding groove, and the assemblability is good. Further, even when a force is applied from above when attaching the fuse, the connection fitting is supported from below by the insulating case body, so that problems such as deformation of the connection fitting hardly occur.

2A is an external perspective view of a fuse holder, and FIG. 3B is an external perspective view of a fuse holder to which a fuse is attached. (A) Front view of fuse holder, (b) Top view of fuse holder, (c) Side view of fuse holder, (d) Bottom view of fuse holder. (A) AA sectional view of a fuse holder, (b) BB sectional view of a fuse holder, (c) BB sectional view of a fuse holder to which a fuse is attached. (A) Front view of a connection metal fitting, (b) Top view of a connection metal fitting, (c) Side view of a connection metal fitting, (d) It is a perspective view of a connection metal fitting.

  Embodiments of the present invention will be described with reference to the drawings.

  The fuse holder 10 according to the present embodiment is formed so that a low-profile fuse can be mounted. As shown in FIGS. 1 to 3, a pair of connection fittings 11 and an insulating case body that holds the pair of connection fittings 11. 20.

  The connection fitting 11 is a fitting having an approximately L-shape in side view as shown in FIG. 4, and includes a base portion 12 to which wiring can be connected and a holding portion 13 that rises vertically from the end of the base portion 12. ing.

  An attachment hole 12 a for attaching the terminal screw 40 is formed through the base portion 12. A female screw to be screwed into the terminal screw 40 is formed on the inner periphery of the mounting hole 12a, and the terminal screw 40 can be screwed using this female screw. The terminal screw 40 is for connecting wiring to the connection fitting 11. When connecting the wiring to the connection fitting 11, the terminal screw 40 attached to the connection fitting 11 is loosened to form a gap between the terminal screw 40 and the base portion 12. If the end of the wiring (crimp terminal or the like) is inserted into this gap and the terminal screw 40 is tightened, the end of the wiring can be sandwiched and held between the head of the terminal screw 40 and the base 12. It has become.

  The sandwiching portion 13 is a portion for sandwiching the fuse 50 and includes a pair of opposing sandwiching pieces 13a. Further, a sandwiching groove 13b that opens upward is provided between the pair of sandwiching pieces 13a. When the fuse 50 is attached to the holding portion 13, the leg portion of the fuse 50 may be pushed into the holding groove 13b from above. When the leg portion of the fuse 50 is pushed into the sandwiching groove 13b, the pair of sandwiching pieces 13a are deformed in the opening direction so that the leg portion of the fuse 50 is firmly sandwiched.

  As shown in FIG. 4B and the like, the above-described base portion 12 is formed so that the maximum width is wider than the sandwiching portion 13, and both sides protrude laterally from the sandwiching portion 13. It has become. The laterally projecting portion can be engaged with a holding groove 23 of the insulating case body 20 described later.

  The insulating case body 20 is formed of an insulating material such as a resin, and includes a base portion 21 having a substantially rectangular parallelepiped shape and a fuse mounting portion 30 formed to protrude from the upper portion of the base portion 21.

  The base unit 21 includes a metal support 22 for supporting the connection metal 11 on the upper surface. Two metal support parts 22 are provided on both sides in the longitudinal direction of the base part 21, and the connection metal parts 11 can be attached to the metal support parts 22.

  On both sides of the metal support 22, holding grooves 23 into which the base 12 of the connection metal 11 can be slid and inserted are formed. The holding groove 23 extends in the horizontal direction and opens at both ends of the base portion 21. When the base portion 12 is inserted from the opening of the holding groove 23, the base portion 12 is guided so as to be slidable in the horizontal direction, and is inserted to a position where it abuts against the inside of the fuse mounting portion 30. As described above, since the attachment of the connection fitting 11 is completed simply by slidingly inserting the base portion 12 of the connection fitting 11 into the holding groove 23, the assembly when attaching the connection fitting 11 to the insulating case body 20 is facilitated.

  When the connection fitting 11 is attached to the insulating case body 20 in this manner, the base portion 12 of the connection fitting 11 is supported from below by the fitting support portion 22 and the upper surface of the base portion 12 is exposed as shown in FIG. It will be in the state. By attaching the terminal screw 40 to the base portion 12 in this state, wiring becomes possible as described above. Further, by attaching the terminal screw 40, the base portion 12 can be prevented from falling off the metal fitting support portion 22.

  Here, as shown in FIG. 3 (b), the metal support 22 is provided with a recess 24 that opens upward. This recess 24 is for inserting the tip of the terminal screw 40. That is, when the terminal screw 40 is attached to the attachment hole 12 a of the base portion 12, the distal end portion of the terminal screw 40 that penetrates the attachment hole 12 a is inserted into the recess 24. By inserting the tip of the terminal screw 40 into the recess 24 in this way, the terminal screw 40 is engaged with the recess 24 even when the terminal screw 40 is loosened. It does not move.

  A rail mounting portion 25 for fitting and fixing to a DIN rail or the like is provided at the lower portion of the base portion 21. The rail attachment portion 25 is formed with a pair of claw portions that can be deformed in the opening direction, and is fitted to the DIN rail by being pressed against the DIN rail. By using the rail attachment portion 25, the fuse holder 10 can be attached to the DIN rail.

  The fuse mounting part 30 is a part for inserting and attaching the fuse 50 from above. A round hole 37 is opened on the upper surface of the fuse mounting portion 30, and a pair of notches 31 are formed in the diameter direction of the round hole 37. The pair of cutouts 31 are for guiding the insertion of the fuse 50. As shown in FIG. 1, the fuse 50 is attached to the fuse holder 10 by inserting the fuse 50 along the cutout 31 from above. Is done. A fuse receiving portion 32 protruding in a substantially U shape is formed on the upper surface of the fuse mounting portion 30, and when the fuse 50 is inserted to the back, the fuse receiving portion 32 receives the front and rear of the fuse 50. Yes. By receiving the front and rear of the fuse 50 in this way, both sides of the fuse 50 are exposed, and it is easy to grasp both sides of the fuse 50 when the fuse 50 is removed.

  Further, an opening 33 is provided before and after the fuse mounting portion 30 so as to face the metal fitting support portion 22. The opening 33 is for allowing the holding portion 13 to enter the fuse mounting portion 30 when the connection fitting 11 is attached to the insulating case body 20. When the holding portion 13 is inserted into the fuse mounting portion 30, the holding portion 13 is positioned below the notch 31 described above. That is, since the nipping groove 13b opens below the notch 31, when the fuse 50 is inserted from above along the notch 31, the leg portion of the fuse 50 is guided and inserted into the nipping groove 13b. It is like that.

  As shown in FIG. 3A, a fixing hole 38 for attaching the fuse holder 10 with a screw is provided below the fuse mounting portion 30. The fixing hole 38 is provided in communication with the lower side of the round hole 37 and has a smaller diameter than the round hole 37. For this reason, if a fixing screw is inserted from the round hole 37 and penetrates the fixing hole 38, the fuse holder 10 can be attached to a desired place using the screw.

  As described above, according to the present embodiment, a pair of connection fittings 11 provided with the holding portion 13 that holds the fuse 50 and the insulating case body 20 that holds the connection fitting 11 are provided. Since wiring can be connected to the connection fitting 11, the low profile fuse can be used for various purposes other than automobiles. For example, when the DC fuse 50 is desired to be used, the low-profile fuse can be easily connected to the circuit by using the fuse holder 10.

  A fixing hole 38 for attaching the fuse holder 10 with a screw is provided below the fuse mounting portion 30. Therefore, the fuse holder 10 can be easily fixed using the fixing hole 38. Further, since the fixing hole 38 is provided on the back side of the fuse 50, the size of the fuse holder 10 can be reduced.

  The connection fitting 11 includes a base portion 12 to which wiring can be connected and the holding portion 13 that rises vertically from an end portion of the base portion 12. The insulating case body 20 includes the base portion 12. A holding groove 23 into which 12 can be slid and inserted is formed. According to such a configuration, the connection fitting 11 can be attached to the insulating case body 20 simply by sliding the base portion 12 into the holding groove 23, and the assemblability is good. Even when a force is applied from above when the fuse 50 is attached, the connection fitting 11 is supported by the insulating case body 20 from below, so that problems such as deformation of the connection fitting 11 hardly occur.

  In the above-described embodiment, the fuse holder 10 to which a low-profile fuse can be mounted has been described. However, the present invention is not limited to this, and the fuse holder 10 to which a mini-fuse can be mounted can be similarly configured.

DESCRIPTION OF SYMBOLS 10 Fuse holder 11 Connection metal fitting 12 Base part 12a Mounting hole 13 Nipping part 13a Nipping piece 13b Nipping groove 20 Insulating case body 21 Base part 22 Metal support part 23 Holding groove 24 Recess 25 Rail mounting part 30 Fuse mounting part 31 Notch 32 Fuse receiving part 33 Opening part 37 Round hole 38 Fixing hole 40 Terminal screw 50 Fuse

Claims (3)

A fuse holder to which a low profile fuse or a mini fuse can be attached,
A pair of connection fittings having a holding portion for holding the fuse;
An insulating case body for holding the connection fitting;
With
A fuse holder, wherein wiring can be connected to the connection fitting. The insulating case body is provided with a fuse mounting portion into which a fuse can be inserted from above,
The fuse holder according to claim 1, wherein a fixing hole for attaching the fuse holder with a screw is provided below the fuse mounting portion. The connection fitting includes a base part to which wiring can be connected, and the holding part rising vertically from an end part of the base part,
The fuse holder according to claim 1 or 2, wherein the insulating case body is formed with a holding groove into which the base portion can be slid.

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