Power fuse

Abstract

The present invention relates to a power fuse, and more specifically to a power fuse that is air-tight and is stably assembled. The power fuse according to an embodiment of the present invention has improved assemblability wherein it is easy to set an assembly position, since a current-carrying member is assembled by being mounted in a mounting hole of a support member.

Description

power fuse

[0001] The present invention relates to a power fuse, and more particularly, to a power fuse with improved assembly stability and ease of assembly.

[0002] A fuse is a common circuit protection device that interrupts the current between a power source and the protected load when a specific condition, such as overheating, occurs due to abnormal current. Fuses are widely used in electrical equipment such as power distribution systems and control systems, and are one of the most widely used protective devices as short-circuit and overcurrent protectors.

[0003] Fig. 1 shows a perspective view of a power fuse according to the prior art, and Fig. 2 shows an exploded perspective view of a power fuse according to the prior art.

[0004] The main body (1) is formed in a cylinder shape with a hollow portion.

[0005] A conductor (2) is provided and inserted into the main body (1). The conductor (2) is made of a material having high electrical conductivity, such as silver (Ag), and a relatively low melting point compared to other metals.

[0006] An inner plate (3) is attached to both ends of the conductor (2). The inner plate (3) is formed of a material with high electrical conductivity, such as aluminum or copper.

[0007] A terminal (4) protrudes from the inner plate (3).

[0008] A gasket (5) is provided to maintain airtightness inside the power fuse. The gasket (5) is formed of an insulating material.

[0009] A holder (6) is provided. The holder (6) fixes the gasket (5) and the inner plate (3) together to the main body (1) and maintains insulation from the outside.

[0010] In the case of a power fuse according to the prior art, after the conductor (2) is assembled to the inner plate (3), the inner plate (3) is assembled together with a gasket (5). The assembly thus assembled is fixed to the main body (1) by a holder (4).

[0011] The power fuse according to the prior art only serves as a sealing function due to the weak strength of the gasket (50).

[0012] In addition, in assembling a power fuse according to the conventional technology, the conductor (2) is preferentially fixed to the inner plate (3), but there is a possibility of damage to the conductor (2) during the assembly process.

[0013] In addition, it is difficult to check the condition and location of the entire body (2) during assembly, so it is difficult to check if a defect occurs.

[0014] In addition, the entire body (2) and the inner plate (3) are fixed by welding, and if damage occurs to the welding part, there is a possibility that performance may be degraded.

[0015] The present invention has been devised to solve the above-mentioned problems, and its purpose is to provide a power fuse that is easy to assemble.

[0016] Another purpose is to provide a power fuse that reduces the occurrence of damage to the entire circuit during assembly.

[0017] Another purpose is to provide a power fuse that improves the hermeticity inside the power fuse.

[0018] A power fuse according to one embodiment of the present invention comprises: a main body having a hollow portion; a current-carrying member inserted into the hollow portion; a support member disposed at each end of the main body to seal the main body and support the current-carrying member; a terminal member disposed on the outside of the support member and connected to the current-carrying member; and a holder disposed on the outside of the terminal member and fixing the support member and the terminal member to the main body.

[0019] Here, the above-mentioned conductive member is provided in multiple pieces arranged in the up, down, left, right or east, west, south and north directions based on the central axis of the above-mentioned hollow portion.

[0020] In addition, the above-mentioned conductive member is provided with a plurality of 'V' or 'U' shaped wrinkles along the length direction.

[0021] In addition, the above-mentioned conductive member is provided with a plurality of break holes formed by a plurality of holes along the length direction.

[0022] Additionally, a plurality of the above-described fracture holes and wrinkles are arranged alternately.

[0023] Additionally, a central hole is formed in the support member with a size smaller than the diameter of the hollow portion.

[0024] Additionally, a plurality of mounting grooves are formed on the surface forming the central hole, on which the conductive member can be mounted.

[0025] Additionally, a cut surface is formed at the corner between the above-mentioned mounting groove and the adjacent mounting groove.

[0026] In addition, both ends of the above-mentioned conductive member are formed by bending, and a bending portion is provided to be placed in the above-mentioned mounting groove.

[0027] In addition, the above-mentioned bending portion includes a first bending portion, which is a portion where an end of the above-mentioned conductive member is bent in an outer direction of the above-mentioned main body portion and comes into contact with the above-mentioned supporting member.

[0028] In addition, the above-mentioned bending portion further includes a second bending portion that is a portion that bends away from the main body portion at an end of the first bending portion.

[0029] In addition, the above-mentioned bending portion further includes a third bending portion that is a portion that bends inwardly from the end of the second bending portion to the main body portion.

[0030] Additionally, the first bend portion contacts the rear surface of the terminal member, the second bend portion contacts the side surface of the terminal member, and the third bend portion contacts the front surface of the terminal member.

[0031] And, the support member is formed of an elastic material.

[0032] According to a power fuse according to one embodiment of the present invention, since the conducting member is assembled by being placed in the mounting groove of the supporting member, the assembly position is easily determined, thereby improving the assembly efficiency.

[0033] In addition, the conductive member is provided with a folded portion to increase resistance to mechanical displacement and increase the cross-sectional area of ​​the conductive member.

[0034] In addition, a bending portion is provided at the end of the conductive member to mechanically connect it to the terminal member, making assembly easy.

[0035] In addition, the support member is made of an elastic material and is provided between the main body and the terminal member, thereby improving the airtightness of the hollow portion of the main body.

[0036] Fig. 1 is a perspective view of a power fuse according to the prior art.

[0037] Figure 2 is an exploded perspective view of a power fuse according to the prior art.

[0038] FIG. 3 is a perspective view of a power fuse according to one embodiment of the present invention.

[0039] Figure 4 is an exploded perspective view of a power fuse according to one embodiment of the present invention.

[0040] FIG. 5 is a front view of a support member applied to a power fuse according to one embodiment of the present invention.

[0041] Figures 6 to 10 are assembly process diagrams of a power fuse according to one embodiment of the present invention. One side shows a disassembled state, and the other side shows a combined state.

[0042] Figure 6 shows the entire body inserted into the main body.

[0043] Figure 7 shows a state in which a support member is arranged on one side of the main body.

[0044] Figure 8 shows the entire body mounted on the support member.

[0045] Figure 9 is a front view of Figure 8.

[0046] Figure 10 shows a state where the terminal portion is inserted into the entire body.

[0047] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, these drawings are intended to provide a detailed description sufficient to enable those skilled in the art to easily practice the invention, and are not intended to limit the technical spirit or scope of the present invention.

[0048] The terms “absence” or “part” used to refer to components in the present invention are not used for any limiting purpose and may be omitted.

[0049] FIG. 3 is a perspective view of a power fuse according to one embodiment of the present invention, FIG. 4 is an exploded perspective view of a power fuse according to one embodiment of the present invention, and FIG. 5 is a front view of a support member applied to a power fuse according to one embodiment of the present invention.

[0050] The power fuse (100) according to each embodiment of the present invention will be described in detail with reference to the drawings.

[0051] A power fuse according to one embodiment of the present invention comprises: a main body (110) having a hollow portion (115); a plurality of conductive members (120) inserted into the hollow portion (115); support members (130) disposed at both ends of the main body (110) to seal the main body (110) and support the conductive members (120); a terminal member (140) disposed on the outside of the support member (130) and connected to the conductive member (120); and a holder (150) disposed on the outside of the terminal member (140) and fixing the support member (130) and the terminal member (140) to the main body (110).

[0052] The main body (110) becomes an outer case or a case. The main body (110) is formed in a cylindrical or square shape. The main body (110) may be formed in a rectangular parallelepiped in the shape of a box or bar.

[0053] The main body (110) is formed of a material that is resistant to heat and pressure, such as a ceramic material. The main body (110) must have excellent pressure and heat resistance. Since high heat and pressure are generated by the arc generated when the conductive member (120) is cut within the main body (110), a material with strong resistance to this is used.

[0054] A hollow portion (115) is formed along the axial direction in the main body (110). The hollow portion (115) is formed penetrating along the longitudinal direction of the main body (110). The hollow portion (115) may be formed in a circular shape centered on the main axis of the main body (110).

[0055] A conductive member (120) is inserted and installed in the hollow portion (115) of the main body (110). The hollow portion (115) of the main body (110) functions as an arc extinguishing chamber to extinguish an arc when the conductive member (120) is melted and an arc is generated. At this time, in order to extinguish an arc generated in the hollow portion (115), the hollow portion (115) is filled with an arc extinguishing material such as silica sand. Silica sand is sand containing a large amount of quartz and is suitable for arc extinguishing.

[0056] A fastening groove (112) is formed adjacent to each corner portion on both side surfaces (111) of the main body portion (110) (here, surfaces perpendicular to the axial direction). A support member (130), a terminal member (140), and a holder (150) are coupled to the fastening groove (112) by a fastening member (160).

[0057] A current-carrying member (120) is provided. The current-carrying member (120) is the main material of the power fuse (100). The current-carrying member (120) functions to conduct current between the power source and the load under normal conditions, and in the case of an abnormal current exceeding an overcurrent, it functions to cut off the current by breaking or fusing.

[0058] The conductive member (120) is made of a metal material having high electrical conductivity, such as silver (Ag), and an appropriate melting point or breaking point.

[0059] The energizing member (120) is inserted and installed in the hollow portion (115) of the main body (110).

[0060] The conductive member (120) is formed in the shape of a thin plate. The conductive member (120) is provided in multiple pieces. For example, four conductive members (120) may be provided. The conductive members (120) may be arranged in the up, down, left, and right (or east, west, south, and north) directions with respect to the central axis in the hollow portion (115).

[0061] The conductive member (120) is installed on the support member (130) for placement within the hollow part (115).

[0062] The conductive member (120) is provided with a wrinkled portion (126) and a break hole portion (128) between the two ends (121). At this time, a plurality of wrinkled portions (126) and break hole portions (128) may be formed alternately.

[0063] The wrinkles (126) are formed in multiple numbers along the width direction of the conductive member (120). Therefore, they are formed in a wave pattern along the length direction of the conductive member (120).

[0064] The wrinkled portion (126) can be formed by bending the conductive member (120) composed of a thin and long flat plate into a 'U' or 'V' shape to form a small uneven portion.

[0065] The wrinkled portion (126) provides elasticity to the conductive member (120). Therefore, when a mechanical force such as pulling or twisting is applied to the conductive member (120), its resistance to this increases.

[0066] In addition, the cross-sectional area of ​​the conductive member (120) increases due to the folds (126), making it advantageous to control the current capacity.

[0067] A fracture hole (128) is provided between a plurality of wrinkle portions (126). The fracture hole (128) may be formed by a plurality of circular holes. In this case, the plurality of circular holes may be arranged in a straight line along the width direction.

[0068] The fracture hole (128) becomes a melting point when an arc occurs. Since the fracture hole (128) is formed with a smaller unit area than other parts of the current-carrying member (120), the arc heat concentration is high, so melting occurs first.

[0069] The current resistance value may vary depending on the hole size and number of the fracture hole (128). That is, the fracture hole is formed appropriately depending on the current resistance value setting.

[0070] The conductive member (120) has both ends (121) that serve as joints connected to the support member (130) and the terminal member (140). For this purpose, bending portions (122, 123, 124) that are formed by bending are provided at both ends (121) of the conductive member (120). With respect to the bending portions, reference may be made to FIGS. 6 to 10. FIGS. 6 to 10 are assembly process diagrams of a power fuse according to an embodiment of the present invention, one side showing a disassembled state and the other side showing a coupled state. FIG. 6 shows a state in which a conductive member is inserted into a main body, FIG. 7 shows a state in which a support member is arranged on one side of the main body, FIG. 8 shows a state in which a conductive member is placed on a support member, FIG. 9 is a front view of FIG. 8, and FIG. 10 shows a state in which a terminal portion is inserted into a conductive member.

[0071] The bending portions (122, 123, 124) include a first bending portion (122), a second bending portion (123), and a third bending portion (124) that are sequentially formed by bending from the end portion (121) of the conductive member (120). The first bending portion (122), the second bending portion (123), and the third bending portion (124) are each bent at a right angle in an outward direction or an inward direction perpendicular to the longitudinal direction of the end portion (121) of the conductive member (120). Here, the inner and outer sides are expressed as the direction approaching the longitudinal axis of the main body (110) as the inner side, and the direction away from the longitudinal axis as the outer side.

[0072] The first bent portion (122) is a portion where the end portion (121) of the conductive member (120) is bent toward the outside of the main body (110). The first bent portion (122) is in contact with the surface of the supporting member (130). The first bent portion (122) is inserted into the central hole (135) of the supporting member (130) and is joined in a manner of being placed on the supporting member (130). The first bent portion (122) is formed by bending while the supporting member (130) is placed on the side portion (111) of the main body (110) while the conductive member (120) is inserted into the hollow portion (115) of the main body (110), and the end portion (121) of the conductive member (120) is supported while being caught in the receiving groove (136) of the supporting member (130). Accordingly, the first bend (122) is bent at a right angle from the conductive member (120) and contacts the surface of the support member (130). The first bend (122) has a length from the groove of the support member (130) to the side surface.

[0073] The second bend (123) is a portion that is bent again in the longitudinal direction of the main body (110) from the end of the first bend (122). The second bend (123) is formed by the end (121) of the conductive member (120) crossing the support member (130) to form the first bend (122), and then bending at a right angle in the direction away from the main body (110) at the side of the support member (130).

[0074] The second bend (123) serves as a guide into which the terminal member (140) can be inserted. When the terminal member (140) is inserted, the second bend (123) comes into contact with the side surface of the terminal member (140). The second bend (123) has a length corresponding to the thickness of the terminal member (140).

[0075] The third bend (124) is a portion where the main body (110) is bent inward at the end of the second bend (123). The third bend (124) is folded along the side of the terminal member (140) after the terminal member (140) is inserted. The third bend (124) is in contact with the front surface of the terminal member (140).

[0076] When viewed in a combined state, the first bending portion (122) is placed on the support member (130), and the first bending portion (122), the second bending portion (123), and the third bending portion (124) take the form of wrapping the terminal member (140).

[0077] That is, the conductive member (120) is installed and supported across the support member (130) and terminal member (140) by the bending portions (122, 123, 124). Therefore, it is easy to determine the assembly position of the conductive member (120) and assembly is easy.

[0078] A support member (130) is provided. The support member (130) is provided between the terminal member (140) and the main body (110) to improve airtightness and at the same time serve as a support on which the conductive member (120) is installed. Fig. 5 illustrates a front view of the support member (130).

[0079] The support member (130) is formed as a flat plate. At this time, the support member (130) has a predetermined thickness. Here, the support member (130) may be formed to have a thickness smaller than that of the terminal member (140).

[0080] The support member (130) is made of an elastic material. The support member (130) is made of an elastic material so that it is compressed between the terminal member (140) and the main body (110) to maintain airtightness.

[0081] The support member (130) may be formed in an overall square shape. The edge of the support member (130) may be formed in the same shape as the edge shape of the side portion (111) of the main body portion (110). However, the external dimensions of the support member (130) may be formed smaller than the side portion (111).

[0082] The support member (130) has a first fastening hole (132) formed at each corner. The fastening member (160) is coupled to the first fastening hole (132) and the fastening groove (112) to couple the support member (130) to the main body (110).

[0083] A central hole (135) is formed in the center of the support member (130). At this time, the size of the central hole (135) is formed smaller than the size of the hollow portion (115) of the main body portion (110). Accordingly, the conducting member (120) is installed at a predetermined distance from the wall portion forming the hollow portion (115).

[0084] A mounting groove (136) is formed on the surface forming the central hole (135) to which the end (121) of the conductive member (120) is mounted. The mounting groove (136) is formed as a straight groove. In other words, the mounting groove (136) is a groove in the shape of the letter 'ㄷ' except for the open portion. The mounting groove (136) can be formed on each of the upper, lower, left, and right (east, west, south, and north) sides of the central hole (135).

[0085] The width of the mounting groove (136) is formed to be smaller than the diameter (distance between opposite sides) of the central hole (135). That is, the mounting groove (136) has a predetermined gap from the adjacent mounting groove (136). Accordingly, the conductive members (120) mounted in each mounting groove (136) are spaced apart from each other.

[0086] The conductive members (120) are each placed in the mounting grooves (136). The conductive members (120) are placed in the mounting grooves (136) to be supported, and are folded at a right angle along the surface of the supporting member (130). The conductive members (120) are positioned in the mounting grooves (136) of the supporting member (130), making it easy to determine the assembly position. That is, both ends (121) of the conductive members (120) are placed in the mounting grooves (136) of the supporting members (130) on both sides of the main body (110) and are installed in a folded manner, thereby improving the assembling ability. Since they are installed in a mechanical manner in this way, they are easier to assemble and have smaller assembly errors than when they are directly joined by welding.

[0087] A cut surface (138) may be formed at the corner between adjacent mounting grooves (136) in the central hole (135). The cut surface (138) may be formed as a straight section like a chamfered surface or as a rounded curved surface. The cut surface (138) facilitates the entry of the conductive member (120) into the mounting groove (136). In addition, unnecessary space occupied by the supporting member (130) is minimized.

[0088] A terminal member (140) is provided. The terminal member (140) is connected to a power source or a load to form a current path. The terminal member (140) is electrically and mechanically connected to the current-conducting member (120). The terminal member (140) is formed of a material with high electrical conductivity, such as aluminum or copper.

[0089] The terminal member (140) is formed in a plate shape like the support member (130). The terminal member (140) may be formed to have a thickness greater than that of the support member (130). The terminal member (140) may be formed in a square shape.

[0090] A second fastening hole (142) is formed at each corner of the terminal member (140). The fastening member (160) is coupled to the first fastening hole (132), the second fastening hole (142), and the fastening groove (112) to fasten the terminal member (140) to the main body (110).

[0091] In the terminal member (140), a terminal portion (145) protrudes vertically from the member body. A power source or load is connected to the terminal portion (145).

[0092] A terminal connection hole (146) is formed in the terminal portion (145). A cable or connection terminal may be provided between the terminal connection hole (146) of the terminal member (140) and the power source or load and the terminal portion (145).

[0093] The terminal member (140) is wrapped on each side by the bent portions (122, 123, 124) of the conductive member (120). The end portion (121) of the conductive member (120) is bent so as to wrap around the terminal member (140).

[0094] The first bend (122) contacts the rear surface of the terminal member (140), the second bend (123) contacts the side surface of the terminal member (140), and the third bend (124) contacts the front surface of the terminal member (140). The conductive member (120) is mounted on the support member (130) and is mechanically assembled by wrapping around the terminal member (140), thereby improving the assembling efficiency. In this way, additional welding can be performed while the conductive member (120) is mechanically coupled to the terminal member (140). In this case, since the conductive member (120) is integrally coupled to the terminal member (140), the bonding strength is excellent. Meanwhile, since welding is performed while the member is already mechanically coupled, the workability is easy.

[0095] When the terminal member (140) is connected to the main body (110) by the fastening member (160), it also serves to improve airtightness by compressing the support member (130).

[0096] A holder (150) is provided. The holder (150) is formed as a flat plate. The holder (150) may be formed as a square surface, similar to the support member (130). At this time, the holder (150) has a predetermined thickness. Here, the holder (150) may be formed to be smaller than the thickness of the terminal member (140).

[0097] It is preferable that the holder (150) be formed of an insulating material.

[0098] A third fastening hole (152) is formed at each corner of the holder (150). The fastening member (160) is coupled to the first fastening hole (132), the second fastening hole (142), the third fastening hole (152), and the fastening groove (112) to fasten the holder (150) to the main body (110). The holder (150) also serves to press-fit and secure the terminal member (140) and the support member (130) to the main body (110).

[0099] A terminal insertion hole (155) is formed in the holder (150) so that the terminal portion (145) of the terminal member (140) can pass through. The terminal insertion hole (155) is formed in the cross-sectional shape of the terminal portion (145) of the terminal member (140).

[0100] A fastening member (160) is provided. The fastening member (160) may be composed of a bolt or a screw. The fastening member (160) may be provided with a loosening prevention member (165), such as a washer, to prevent loosening of the joint.

[0101] Power fuses like the above are mainly used for short-circuit protection of power devices.

[0102] Power fuses are divided into current-limiting and non-current-limiting types depending on the protection method.

[0103] A current-limiting fuse is a fuse that prevents short-circuit currents in a circuit by generating a high arc resistance when blown. It is constructed by enclosing a fuse element and a extinguishing material, such as silica, in a sealed insulating container to forcibly limit currents when a fault current occurs in the circuit.

[0104] The characteristics of the current-limiting fuse are that it blocks at the voltage zero point (0 point), blocks short-circuit current by limiting it, has a small size, large breaking capacity, and generates overvoltage.

[0105] A non-current-limiting fuse (COS: Cut Out Switch) has a structure in which one end of the insulating tube is sealed and the other end is open.

[0106] The characteristics of a non-current-limiting fuse are that it blocks at the current zero point (0 point), blows extinguishing gas into the arc to increase the insulation strength between the current zero point and the test voltage to a level higher than the test voltage, and does not generate high voltage, but generates noise.

[0107] Power fuses safely conduct load current, and do not melt in case of overcurrent or overload current, but protect circuits and equipment by blocking overcurrent exceeding the set value.

[0108] Here, overcurrent is of the following three types, but the power fuse is mainly intended to block short-circuit current among them.

[0109] First, short-circuit current is a large current that flows through a part when the lines of a circuit are contacted in a state of low impedance.

[0110] Second, overload current is a current that exceeds the rated current of the device or the allowable current of the wire to a certain extent and requires automatic shutdown to prevent damage to the device or wire, taking into account the duration of the current.

[0111] Third, transient current is a current that exists for only a very short time, such as the input current of a transformer or the starting current of a motor, and naturally decays and disappears.

[0112] The advantages and disadvantages of such power fuses are as follows:

[0113] The advantages of power fuses are that they are inexpensive, small and lightweight, do not require additional devices such as relays or transformers, current-limiting fuses do not generate noise when breaking, have a large breaking capacity relative to their size, are easy to maintain, and have excellent backup protection capabilities.

[0114] Disadvantages of power fuses include that they cannot be reinserted, they may melt in overcurrent, their operating time-current characteristics cannot be adjusted, and in the case of current-limiting fuses, there is a current range in which they do not break even if they melt, overvoltage occurs when they break, and they cannot provide ground fault protection for high-impedance grounding systems.

[0115] According to a power fuse according to one embodiment of the present invention, since the conducting member is assembled by being placed in the mounting groove of the supporting member, the assembly position is easily determined, thereby improving the assembly efficiency.

[0116] In addition, the conductive member is provided with a folded portion to increase resistance to mechanical displacement and increase the cross-sectional area of ​​the conductive member.

[0117] In addition, a bending portion is provided at the end of the conductive member to mechanically connect it to the terminal member, making assembly easy.

[0118] In addition, the support member is made of an elastic material and is provided between the main body and the terminal member, thereby improving the airtightness of the hollow portion of the main body.

[0119] The embodiments described above are illustrative of the best possible implementations of the present invention, and those skilled in the art will appreciate that various modifications and variations can be made without departing from the essential characteristics of the present invention. Therefore, these embodiments are not intended to limit the technical spirit of the present invention, but rather merely to illustrate it. Therefore, it should be understood that the scope of the technical spirit of the present invention is not limited by these embodiments. In other words, the scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within a scope equivalent thereto should be interpreted as being included within the scope of the rights of the present invention.

[0120] [Explanation of symbols]

[0121] 110 Main body

[0122] 115th Division

[0123] 120 No electricity

[0124] 122 First bend

[0125] 123 Second bend

[0126] 124 Third bend

[0127] 126 wrinkles

[0128] 128 fracture hole

[0129] 130 Absence of support

[0130] 135 Central Hall

[0131] 136 Geochi Home

[0132] 140 Terminal Absence

[0133] 145 terminal section

[0134] 152 holes

[0135] 160 Absence of conclusion

Claims

1. Main body having a hollow part; A conductive member inserted into the above hollow portion; Support members arranged at each end of the main body to seal the main body and support the conductive member; A terminal member disposed on the outside of the above supporting member and connected to the above conducting member; and A power fuse comprising a holder arranged on the outside of the terminal member and fixing the support member and the terminal member to the main body.

2. In the first paragraph, the power fuse is provided in multiple pieces arranged in the up, down, left, right or east, west, south and north directions based on the central axis of the hollow portion.

3. A power fuse in accordance with paragraph 1, wherein the conductive member has a plurality of 'V' or 'U' shaped folds provided along the length direction.

4. A power fuse in accordance with paragraph 1, wherein the conductive member has a plurality of rupture holes formed of a plurality of holes provided along the longitudinal direction.

5. A power fuse in which a plurality of the above-described rupture holes and wrinkled portions are arranged alternately in the fourth paragraph.

6. A power fuse in accordance with paragraph 1, wherein a central hole is formed in the support member with a size smaller than the diameter of the hollow portion.

7. A power fuse in accordance with paragraph 6, wherein a plurality of mounting grooves are formed on a surface forming the central hole, on which the conductive member can be mounted.

8. A power fuse in accordance with paragraph 7, wherein a cut surface is formed at a corner between the mounting groove and an adjacent mounting groove.

9. A power fuse in accordance with paragraph 7, wherein both ends of the conductive member are formed by bending and a bend portion is provided to be placed in the mounting groove.

10. In the 9th paragraph, the bending portion is a power fuse including a first bending portion in which an end of the conductive member is bent in an outer direction of the main body portion and comes into contact with the support member.

11. A power fuse in claim 10, wherein the bending portion further includes a second bending portion that is bent in a direction away from the main body portion at an end of the first bending portion.

12. A power fuse in claim 11, wherein the bending portion further includes a third bending portion that is a portion that bends inwardly from the end of the second bending portion to the main body portion.

13. A power fuse in claim 12, wherein the first bent portion is in contact with the rear surface of the terminal member, the second bent portion is in contact with the side surface of the terminal member, and the third bent portion is in contact with the front surface of the terminal member.

14. A power fuse in the first paragraph, wherein the support member is formed of an elastic material.

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