KR20030015330A - A structure of holder of small size fuse and a shape of cap of small size fuse - Google Patents

Abstract

PURPOSE: A structure of a micro-fuse holder and shape of a micro-fuse lid is provided to allow users to easily and conveniently replace fuse and prevent defects by firmly supporting the fuse lid. CONSTITUTION: A fuse holder has a main body(9) where one or more hooks and two holes are formed in such a manner that two fuse holder terminals are press fit into the main body of the fuse holder. Each fuse holder terminal has a side having a linear shape with a constant width and the other side which compresses a fuse terminal by the restoring force of a spring so as to achieve electrification. Two fuse holder terminals are press fit into the main body of the fuse holder.

Description

Structure of micro fuse holder and shape of micro fuse cover {A STRUCTURE OF HOLDER OF SMALL SIZE FUSE AND A SHAPE OF CAP OF SMALL SIZE FUSE}

The present invention relates to an ultra-small fuse (hereinafter referred to collectively as FUSE) and an ultra-small fuse holder (hereinafter referred to collectively as FUSE HOLDER), in the case of the prior art, the fuse 6 directly on the PCB In order to replace the fuse (6) on the PCB (14) by soldering and attaching the terminal (3) of the fuse to the terminal (14), heat is applied to the terminal (3) of the fuse (6) using an iron pole device. The solder (13) soldered to the PCB (14) and the fuse terminal (3) was melted to separate the fuse (6) from the PCB (14), and to replace the fuse (6) again, using equipment such as a soldering iron, the PCB ( It was assembled by soldering (13) to 14).

The following is a detailed description of the prior art.

9 is a cross-sectional view of the final assembly of the fuse 6 of the conventional structure, in which the fuse 3 is press-fitted into the body 2 of the insulating plastic or the insert body is injected into the inside of the insulating plastic 2. PCB or fuse based on the indented or insert-extruded part of the fuse and the body part of the fuse (5a) and the concave-convex shape (5-a) to be engaged with each other and the projection (2-a) of the body portion Fusible body ((4), also known as "(4), which is located inside the fuse cover (5) on the other side of the terminal for connecting to the circuit and on the other side and which melts itself for protection of the circuit or protection against fire when overcurrent flows. fuse wire "), which is soldered at each end of each terminal.

In the prior art, when the fuse 6 is replaced on the PCB 14 as described above, since the terminal 3 of the fuse is directly soldered 13 on the PCB or the circuit board 14, it is necessary to use a soldering iron. A very inconvenient problem arises that requires equipment to generate heat to melt the solder. In addition, when an overcurrent flows, the internal pressure of the overcurrent is generated inside the fuse 6 so that the lid 5 of the fuse is broken or the lid 5 of the fuse is pressed into the body assembly 1 of the fuse. In some cases, the press-fit of the fuse with the body assembly 1 is released (in most cases, the press-fit of the fuse lid 5 occurs rather than the breakage of the fuse lid 5). There is a problem that there is no measure to deal with a very serious quality defect such as breakage of (5) or slipping of the press 5 of the lid 5 of the fuse in the fuser body assembly 1.

The present invention is very inconvenient in the use of equipment at the time of replacement of the conventional fuse 6 as described above, such as breakage of the fuse lid 5 or removal of the fuse lid 5 from the body assembly 1 of the fuse. The technical problem of the present invention is to solve the occurrence of a serious quality defect, the technical problem of the present invention using a separate fuse holder (11) when replacing the fuse 8 in the assembled state on the PCB or circuit board 14, replacement equipment such as iron It is possible to replace the fuse 8 in a convenient manner without using a valve, and also in case of overcurrent, such as breakage of the fuse lid 7 or removal of the fuse lid 7 from the body assembly 1 of the fuse. It is to invent and provide a structure of the fuse holder (11) so that a significant quality defect.

The technical problem of the present invention as described above, in the fuse holder 11 assembly structure, there are two holes (9-a) for pressing and assemble the fuse holder terminal 10 on one side and the fuse (side) 8) There is at least one shape of the hook (9-b) for enclosing the hook (9-b) of the fuse holder body (9) shows the external force to the hook of the fuse holder in Figure 14 As described above, only when the force applied by an external force is normally coupled to the upper portion of the fuse lid 7 of the present invention, the present invention is merely inserted into the fuse 8 of the fuse holder 11 of the present invention. The fuse holder 11 and the lid 7 of the fuse is not coupled. In addition, the hook holder 9-b of the fuse holder body 9 has a shape opposite to the groove 7-a or the projection of the upper side of the fuse lid 7 of the present invention. (9);

The fuse holder terminal 10 is assembled inside the fuse holder body 9 and the fuse holder terminal 10 serves to be assembled by soldering the PCB or the circuit board 14 to the bottom surface of the fuse holder body 9. In view of the shape of the fuse holder terminal 10, when the terminal 3 of the fuse is pressed into the terminal 10 of the fuse holder on one side, the terminal 3 of the fuse is held by the spring restoring force of the terminal 10 of the fuse holder. Two terminals of the fuse holder 10 having a bite structure which serves to electrically conduct electricity while always being in contact with the terminals of the fuse 3 by pressing.

In the fuse 8 structure,

A fuse lid 7 having a continuous shape or at least one intermittently groove 7-a or a projection for engaging with the hook 9-b of the fuse holder on the upper side of the fuse lid 7;

It is achieved by providing a fuse holder assembly 11 and a fuse lid 7, characterized in that consisting of.

Hereinafter, the fuse holder assembly 11 and the fuse lid 7 according to the present invention will be described in detail with the accompanying drawings.

1 is a shape in which a fuse wire is soldered to a combination of a fuse terminal and a plastic electrical insulator according to the related art and the present invention.

2 is a fuse lid of the prior art

FIG. 3 is a cross-sectional view of the P-P 'portion of FIG. 2 (fuse hood of the prior art)

4 is a cross-sectional view of a fuse final assembly of the prior art.

5 is a perspective view of a fuse of the related art.

6 is a fuse lid of the present invention

Figure 7 is a cross-sectional view of the 9-9 'portion of Figure 6 (fuse lid of the present invention)

8 is a cross-sectional view of the fuse final assembly of the present invention.

9 is a perspective view of the fuse of the present invention

10 is an external view of the fuse holder body of the present invention.

11 is a perspective view of the fuse holder body of the present invention;

12 is a perspective view of a fuse holder terminal of the present invention;

Figure 13 is a fuse holder perspective view of the present invention

14 is a perspective view of the fuse assembly of the present invention assembled into the fuse of the present invention;

15 is an exploded perspective view of the fuse of the present invention;

16 is an exploded perspective view of a fuse assembled to a fuse of the present invention;

17 is a cross-sectional view in which the fuse of the prior art and the present invention are soldered onto a circuit board;

Figure 17-a is a fuse of the prior art in Figure 17

Figure 17-b is a fuse of the present invention in Figure 17

18 is a cross-sectional shape of the fuse holder terminal of the present invention coupled with the fuse (the shape except the fuse holder body).

18-a is a front view of FIG. 18

18-b is a side view in FIG. 18

19 is an exploded perspective view of another embodiment of the fuse of the present invention;

<Explanation of symbols for main parts of drawing>

1: shape in which a soluble body is soldered and connected to a combination of a fuse terminal and a fuse body of the related art and the present invention

2: fuse body of conventional and present invention

2-a: Concave-convex shape for press-fitting with the fuse lid in the fuse body of the prior art and the present invention

3: Fuse terminal of conventional and this invention 4: Fuse soluble body of conventional and this invention

5: fuse lid of prior art (top view, front view, back view)

5-a: Concave-convex shape for press-fitting with the fuse body in the fuse cover of the prior art and the present invention

6: fuse of prior art 7: fuse cover of the present invention

7-a: groove shape of the portion that is coupled to the hook of the fuse holder body in the fuse lid of the present invention

8: fuse of the present invention 9: fuse holder body of the present invention

9-a: Hole (or groove) portion for press-fitting with the fuse holder terminal in the fuse holder body of the present invention-2 places

9-b: hook portion for coupling with the fuse of the present invention in the fuse holder body of the present invention-2 places

9-c: Shape portion for firmly engaging the fuse lid of the present invention in the hook portion of the fuse holder body of the present invention

10: fuse holder terminal of the present invention

10-a: Compression-bonding part of the fuse terminal in the fuse holder terminal of the present invention

10-b: A part to be soldered when assembling to a PCB or a circuit board in the fuse holder terminal of the present invention

11: fuse holder of the present invention

12: assembly of the fuse of the present invention assembled to the fuse of the present invention

13: solder 14: PCB or circuit board

15: fuse holder body of another embodiment of the present invention

16: Fuseholder terminal of another embodiment of the present invention

1 is a shape in which a soluble body is soldered and connected to a combination of a fuse terminal 3 and an electric insulator 2 of the prior art and the present invention, and FIG. 2 is a fuse lid 5 of the prior art. 3 is a cross-sectional view of the P-P 'portion of the prior art (fuse lid of the prior art), Figure 4 is a cross-sectional view of the fuse final assembly of the prior art. Figure 5 is a perspective view of a fuse of the prior art, Figure 6 is a fuse lid of the present invention, Figure 7 is a cross-sectional view of the Q-Q 'portion of Figure 6 (the fuse lid of the present invention). 8 is a cross-sectional view of the fuse final assembly of the present invention, and FIG. 9 is a perspective view of the fuse of the present invention. Figure 10 is an external view of the fuse holder body of the present invention, Figure 11 is a perspective view of the fuse holder body of the present invention.

12 is a perspective view of a fuse holder terminal of the present invention, and FIG. 13 is a perspective view of a fuse holder of the present invention. 14 is a perspective view of the fuse holder of the present invention assembled into the fuse holder of the present invention, and FIG. 15 is an exploded perspective view of the fuse holder of the present invention. FIG. 16 is an exploded perspective view of a fuse assembled to a fuse holder of the present invention, and FIG. 17 is a cross-sectional view in which the fuse of the prior art and the present invention are soldered onto a PCB or a circuit board. 17-a is a cross-sectional view of the prior art fuse in FIG. 17 soldered onto a PCB or a circuit board, and FIG. 17-b is a fuse of the present invention in FIG. 17 soldered onto a PCB or a circuit board. It is a cross section of. 18 is a cross-sectional shape of the fuse holder terminal of the present invention combined with the fuse (the shape except for the fuse holder body). FIG. 18-a is a front view in FIG. 18, and FIG. 18-b shows a side view in FIG. 18.

Finally, Figure 19 is an exploded perspective view of another embodiment of the fuse holder of the present invention showing a fuse holder with one hook and a fuse holder terminal of another shape.

The structure and the assembly method of the present invention are the rest of the invention except for the shape of the fuse holder lid and the final shape of the fuse upon completion of assembly in the detailed description of the prior art described in the technical field of the present invention and the prior art of the field. same.

4 and 8, the fuses 6 and 8 of the prior art and the present invention have the same shape and assembly except for the groove shape 7-a of the upper outer portion of the fuse lid in the fuse final assembly. And a manufacturing method.

Meanwhile, in the present embodiment, the present invention is applied to the fuse lid 7 and the fuse holder 11 which is a structure, but the present invention is not limited thereto, and various embodiments are applicable by applying the contents of the present invention as listed in FIG. In addition, the same effects as described above can be obtained when applied to many types of fuses.

As described above, the fuse holder assembly 11 fuses the fuse 6 or 8 directly to the PCB or the circuit board 14 when an overcurrent flows and the fuse 4 becomes short. (6 or 8) will be replaced again. In this case, to remove the fuse (6 or 8) from the PCB or the circuit board 14, the solder (13) must be melted again to remove the fuse (6 or 8). There is a problem to use the auxiliary equipment of the column.

In the present invention, the fuse 8 is assembled to the fuse holder 11, the solder 13 to the PCB or the circuit board 14 is joined to the terminal 10 of the fuse holder, and the terminal 3 of the fuse is a fuse holder terminal ( 10) It is engaged with the crimping structure of 10), so that it can be electrically energized so that when the fuse 8 is replaced, the fuse holder 11 is not detached from the PCB or the circuit board 14 without being separated from the fuse holder body 9. Simply pull out the fuse 8 assembled on the fuse holder 11 by forcibly opening the hook 9-b, which is in the shape of the shape, and detach the fuse 8 from the PCB or the circuit board 14. Conversely, when assembling, the fuse 8 can be easily assembled to the fuse holder 11 by hand as in the case of separation.

In addition, when an overcurrent flows through the fuse and the soluble body inside the fuse is disconnected, the fuse lid 5 is pressurized by the internal pressure while the fuse lid 7 is press-fitted with the body assembly 1 of the fuse. In the case of the problem that the indentation is released from (1), there is no problem solution in the prior art, but in the fuse holder 11 of the present invention, at least one hook 9-h structure of the fuse holder body 9 is a fuse lid. It is a structure that forcibly presses or supports the upper side of (7), and above all, forcibly hand as shown in Fig. 14 when the hook 9-b structure of the fuse holder 11 is coupled to the fuse cover 7. It is pressed against the fuse holder body 9 and the fuse lid 7 and fixedly fixed to the groove 7-a or the projection shape. remind It is a fundamental solution to the problem.

Although specific embodiments of the present invention have been illustrated and described above, the present invention is not limited to the above-described embodiments as applied to the fuse holder and the fuse holder terminal having different shapes as shown in FIG. Various modifications may be made by those skilled in the art to which the present invention pertains without departing from the spirit of the invention as claimed in the claims.

Claims (3)

In the structure of the fuse holder 11 in which the fuse 8 is assembled inside, The fuse holder body 9 has at least one hook (9-b) shape, and the fuse holder body (9) has a fuse holder terminal (10) which is integrally assembled to the fuse holder body (9). There are two holes (9-a) for inserting two into the fuse holder body (9), and on one side has a substantially constant straight line shape, and on the other side the terminal of the fuse ( 3) there are two or more fuse holder terminals 10 having a structure for crimping the fuse terminal 3 by a spring restoring force so as to be in contact with an electrically conductive state, and the fuse in the fuse holder body 9. A fuse holder (11) structure, characterized in that two holder terminals (10) are press-fitted. In the fuse cover 7, Continuous grooves 7-a or projections or two or more shorted grooves 7-a for engaging the hooks 9-b of the fuse holder body 9 on the upper outside of the fuse lid 7. Or a fuse lid (7), characterized in that it has a shape having a protrusion structure. In the shape of the hook 9-b of the fuse holder body 9, The fuse lid 7 of claim 2 in a portion which abuts and engages a continuous groove 7-a or a protrusion structure or two or more shorted grooves or protrusion structures on the upper outside of the fuse lid 7. The fuse holder body (9) having a hook (9-b), characterized in that the groove (7-a) or the projection shape and the opposite shape of the coupling structure.