CN209766348U - Special plastic shell Z-shaped high-voltage fuse for microwave oven - Google Patents

Abstract

The utility model discloses a special plastic shell Z-shaped high-voltage fuse for microwave oven, which comprises an insulating upper shell, wherein the insulating upper shell is Z-shaped, an insulating lower shell is arranged inside the insulating upper shell, a first terminal interface and a second terminal interface are respectively arranged at two ends inside the insulating lower shell, the first terminal interface is connected with a spring, the other end of the spring is connected with a first crimping pipe, the second terminal interface is provided with a second crimping pipe, and a fuse wire is connected between the first crimping pipe and the second crimping pipe; the second terminal interface is connected with a high-voltage lead, and the high-voltage lead is connected with a self-locking terminal.

Description

Special plastic shell Z-shaped high-voltage fuse for microwave oven

Technical Field

the utility model relates to a fuse especially relates to a special shell Z font high tension fuse that moulds of microwave oven.

Background

The special GERF-IV high-voltage fuse for the existing microwave oven is stable and reliable, has stable performance and plays a role in protecting electrical appliances. The product is composed of two wire terminal assemblies, a shell and a fuse spring assembly, wherein the two wire terminal assemblies are connected, the shell is used for supporting, connecting, sealing and marking, and the fuse spring assembly is used for fusing protection. However, the following disadvantages still exist:

1. The product shell is clumsy, large in size and large in material consumption (the shell is 6 grams), and is not energy-saving and environment-friendly.

2. The product has poor sealing performance, gaps are easy to appear at two ends of the shell during assembly, air flows in the gaps, wire materials and springs are oxidized, and the use performance and the service life are directly influenced. The sealing structures at the two ends of the shell are poorly designed, which directly affects the quality of the product.

3. Due to the fact that the structure of the shell is complex during injection molding production, defective products are prone to being produced during injection molding production, the qualified rate of products is reduced, the cost for maintaining the mold is improved, and the service life of the mold is shortened.

4. There are many redundant parts of the housing structure, such as exposed 250# flag terminals requiring wire connections and dedicated connection terminals.

5. Due to the structure of the shell, the cover closing resistance of the shell is large (the stress point is large) during assembly production, the assembly efficiency is low, the production cost is high, and workers are difficult to attract and labor-consuming.

Therefore, it is an urgent need to solve the problem of developing a special molded case zigzag high-voltage fuse for microwave oven.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special Z-shaped high-voltage fuse with a plastic shell for microwave oven, which solves the above problem.

The above object of the present invention is achieved by the following technical solutions: a special plastic shell Z-shaped high-voltage fuse for a microwave oven comprises an insulating upper shell, wherein the insulating upper shell is Z-shaped, an insulating lower shell is arranged inside the insulating upper shell, a first terminal interface and a second terminal interface are respectively arranged at two ends inside the insulating lower shell, the first terminal interface is connected with a spring, the other end of the spring is connected with a first crimping pipe, the second terminal interface is provided with a second crimping pipe, and a fuse wire is connected between the first crimping pipe and the second crimping pipe; the second terminal interface is connected with a high-voltage lead, and the high-voltage lead is connected with a self-locking terminal.

Further, a hard sheath is arranged outside the self-locking terminal.

Further, the length of the shell formed by the upper insulating shell and the lower insulating shell is 48 +/-1 mm.

Further, the weight of the shell consisting of the insulating upper shell and the insulating lower shell is 5 grams.

further, the shell that insulating epitheca and insulating inferior valve are constituteed is upper and lower casing open-close type buckle structure, and the epitheca border is equipped with the draw-in groove, and the inferior valve border is equipped with the fixture block with draw-in groove complex.

The utility model discloses a design characteristics lie in:

1. The length of the shell is changed from 78mm of GERF-IV to 48mm, the length is reduced by 20mm, the reduction rate is 40%, the weight of the shell is changed from 6 g to about 5 g, the weight is reduced by about 1 g, the reduction rate is about 16.7%, and the effects of saving cost, saving energy and protecting environment are achieved.

2. An electric wire terminal assembly is changed into a built-in flag-shaped terminal, an electric wire and a hook terminal are reduced, and the product cost is directly reduced.

3. The terminal and the spring are connected in a crimping mode instead of a hook type connection mode, and convenience is increased for automatic production in the future.

4. Because the casing is simple, the injection molding production qualification rate is greatly improved, the mold maintenance rate is greatly reduced, and the cost is effectively saved. The effective utilization rate of the equipment and the mould is greatly improved.

5. The newly designed Z-shaped product is of an upper shell and a lower shell which are opened and closed, the problem of cracking of a hinge of the product in the prior art can be thoroughly solved, and the product percent of pass is improved.

6. When the newly designed Z-shaped product is used by a customer, the customer can save one bracket and space.

Compared with the prior art, the utility model the advantage be:

1. And opening a new die according to the requirements of a newly designed drawing.

2. The length of the shell is 48 +/-1 mm, the shell is divided into an upper shell and a lower shell, the total weight is about 5 grams, the shell is light and convenient, the size is reduced, and the energy-saving and environment-friendly effects are achieved.

3. The built-in structure is adopted for direct connection, one wire and one hook are reduced, and the power used when the contact resistance is smaller.

4. The direct connection mode reduces the bracket and the electric wire and the hook terminal, so that the using space of the product is small.

5. The upper and lower shells can solve the problem of shell scrapping caused by the cracking of the prior product.

4. The upper and lower shells are more simply assembled, the production efficiency can be improved by about 15-20%,

5. The original electric wire assembly, the fuse spring assembly, the PP material and the processing technology are not changed.

6. The shell of the open-close type product is simple, and the mold opening and the production are easy.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural diagram of the upper and lower housings of the present invention.

Detailed Description

the present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, a special plastic housing zigzag high-voltage fuse for a microwave oven includes an insulating upper housing 3, the insulating upper housing 3 is in a zigzag shape, an insulating lower housing 4 is arranged inside the insulating upper housing 3, a first terminal interface 1 and a second terminal interface 8 are respectively arranged at two ends inside the insulating lower housing 4, the first terminal interface 1 is connected with a spring 2, the other end of the spring 2 is connected with a first crimping pipe 5, the second terminal interface 8 is provided with a second crimping pipe 7, and a fuse 6 is connected between the first crimping pipe 5 and the second crimping pipe 7; the second terminal interface 8 is connected with a high-voltage lead 9, and the high-voltage lead 9 is connected with a self-locking terminal 11.

Furthermore, a hard sheath 10 is arranged outside the self-locking terminal 11, and a No. 250 special-shaped terminal on the outer side of the self-locking terminal 11 is built-in and is placed in the shell.

Further, the length of the shell formed by the upper insulating shell 3 and the lower insulating shell 4 is 48 +/-1 mm.

Further, the weight of the shell composed of the insulating upper shell 3 and the insulating lower shell 4 is 5 g.

Further, as shown in fig. 2, the housing formed by the upper insulating housing 3 and the lower insulating housing 4 is of an upper and lower housing opening and closing type buckle structure, a clamping groove 3-1 is arranged at the edge of the upper housing 3, and a clamping block 4-1 matched with the clamping groove 3-1 is arranged at the edge of the lower housing 4.

The utility model discloses a cost reduction as follows:

1. The material cost of the shell of the product is reduced by about 17 percent, and the transportation cost is reduced by about 15 percent.

2. the injection molding qualification rate of the product shell is improved by about 10 percent.

3. The production and assembly efficiency is improved by about 10 percent.

4. The maintenance cost of the die is reduced by about 50 percent.

5. A high-voltage wire and a hook terminal are reduced, and the cost is reduced by about 10%.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (5)

1. The utility model provides a special mould shell Z font high-voltage fuse that moulds of microwave oven which characterized in that: the insulation structure comprises an insulation upper shell, wherein the insulation upper shell is Z-shaped, an insulation lower shell is arranged inside the insulation upper shell, a first terminal interface and a second terminal interface are respectively arranged at two ends inside the insulation lower shell, the first terminal interface is connected with a spring, the other end of the spring is connected with a first crimping pipe, the second terminal interface is provided with a second crimping pipe, and a fuse wire is connected between the first crimping pipe and the second crimping pipe; the second terminal interface is connected with a high-voltage lead, and the high-voltage lead is connected with a self-locking terminal.

2. The special molded case zigzag high-voltage fuse of claim 1, wherein: a hard sheath is arranged outside the self-locking terminal, and a No. 250 special-shaped terminal on the outer side of the self-locking terminal is built-in and is placed in the shell.

3. The special molded case zigzag high-voltage fuse of claim 1, wherein: the length of the shell formed by the insulating upper shell and the insulating lower shell is 48 +/-1 mm.

4. The special molded case zigzag high-voltage fuse of claim 1, wherein: the weight of the shell formed by the upper insulating shell and the lower insulating shell is 5 g.

5. The special molded case zigzag high-voltage fuse of claim 1, wherein: the shell that insulating epitheca and insulating inferior valve are constituteed is upper and lower casing open-close type buckle structure, and the epitheca border is equipped with the draw-in groove, and the inferior valve border is equipped with the fixture block with draw-in groove complex.