Patent Application
20110163839
1. Field of the Invention
The present invention relates to a fuse, and more particularly to a fuse assembly with a power disconnection light indicating function.
2. Description of Prior Art
Fuse is an over-current protection device generally used in an electric appliance or a circuit, and a fuse filament of the fuse melts or the fuse blows to prevent over-current from damaging electronic components installed in the electric appliance, since current will be increased if the electric appliance breaks down or the circuit fails to operate normally, and the current passed through the electric appliance or circuit will exceed a loading limit of the fuse. Therefore, the fuse can achieve the effects of protecting electric appliances and maintaining or repairing circuits.
In general, a light emitting element is installed in the fuse to facilitate maintenance and repair and indicate a damaged fuse. As disclosed in Taiwan Patent. Nos. 302769 and 321525 entitled “Safety power-disconnection terminal device having a light indication” and “Fuse device having a power disconnection warning effect” respectively, a dipole light emitting diode processed by a SMD packaging process is provided for achieving the light indication or warning effect. However, the light emitting diode is electrically connected to a metal plate in the fuse, and it is difficult to assure a proper contact, and thus the electrically conducting effect and the yield rate of the product may be affected adversely.
In view of the shortcomings of the prior art, the inventor of the present invention based on years of experience in the related industry to conduct extensive researches and experiments, and finally developed a fuse structure in accordance with the present invention to provide a feasible solution and overcome the shortcomings of the prior art.
Therefore, it is a primary objective of the present invention to provide an improved fuse structure with a power disconnection light emitting function, wherein a light emitting element is installed in a casing of a fuse by a one-time manufacturing process during the process of assembling the fuse, such that the light emitting element can have a better contact area with a fuse component in the fuse to achieve a better electrically conducting effect and improve the yield rate of the product.
To achieve the foregoing objective, the present invention provides an improved fuse structure with a power disconnection light emitting function, and the fuse structure comprises a casing, a fuse component, and a light emitting element having anode and cathode pins. The casing includes a top plate, a containing space disposed below the top plate and two openings formed on the top plate and interconnected to the containing space. The fuse component is installed in the containing space and includes two electrically conductive plates and a fuse filament, and each electrically conductive plate has a conducting portion protruded from an upper end of the electrically conductive plate, and each conducting portion has a concave forked opening such that each conducting portion is fork-shaped and has two forked horns, and the forked horns of the conducting portions are inserted into the two openings respectively. The top plate includes two compressing portions protruded from the bottom of the top plate and arranged alternately with the two conducting portions, such that an interval is formed between an external edge of each compressing portion and an internal edge of each corresponding conducting portion, and the pins of the light emitting element are clamped in the interval.
The technical characteristics, features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings. The drawings are provided for reference and illustration only, but not intended for limiting the present invention.
With reference to
The casing 1 is made of an insulating material, and the casing 1 includes a top plate 10, and two side plates 11 disposed with an interval apart and opposite to each other and extended out from the bottom of the top plate 10, and a containing space 12 is formed between two side plates 11, and two openings 100 are arranged linearly on the top plate 10 of the casing 1 and interconnected to the containing space 12 for inserting the fuse component 2. The casing 1 is further made of a translucent material, or only the middle position of the top plate 10 opposite to the light emitting element 3 is made of a translucent material.
The fuse component 2 is made of an electrically conductive material, and the fuse component 2 includes two electrically conductive plates 20 and a fuse filament 21 coupled between the two electrically conductive plates 20, and each electrically conductive plate 20 has a conducting portion 22 protruded from an upper end of the electrically conductive plate 20, and a forked opening 220 concavely formed at a distal end of the conducting portion 22, such that the distal end of the conducting portion 22 is fork-shaped and includes two forked horns 221, and the forked horns 221 of each of the two conducting portions 22 are inserted into the two openings 100 of the top plate 10 of the casing 1.
The light emitting element 3 can be a light emitting diode, and includes a light source portion 30, and anode and cathode pins 31 are extended from the light source portion 30, and the light source portion 30 is disposed below the middle of the top plate 10 of the casing 1, and the two pins 31 are clamped between the casing 1 and the fuse component 2. When the light emitting element 3 is connected to the casing 1 and the fuse component 2 of the present invention, the fuse component 2 can be used for pushing the light emitting element 3 into the containing space 12 of the casing 1, such that the two pins 31 of the light emitting element 3 can be clamped tightly between the casing 1 and the fuse component 2 by a one-time manufacturing process, and the contact area between the two pins 31 and the fuse component 2 can be increased to achieve a better electrically conducting effect and improve the yield rate of the product.
With reference to
It is noteworthy to point out that a notch 223 is concavely and separately formed on the external edges of the forked horns 221 of the two conducting portions 22 and proximate to the two pins 31 of the light emitting element 3, and the notch 223 is provided for assuring the fuse component 2 to be latched to edges of the opening 100 to prevent the fuse component 2 from falling off, if the fuse component 2 is loosened from the casing 1. In addition, the casing 1 includes a first position aligning portion 101 protruded downwardly and separately from both sides of the top plate 10, and a second position aligning portion 201 concavely formed at a corresponding position of the fuse component 2, such that the first and second position aligning portions 101, 201 can be used for aligning the casing 1 with the fuse component 2 for a more precise engagement to prevent them from being loosened easily.
In
With the aforementioned structure, an improved fuse structure with a power disconnection light emitting function of the present invention is achieved.
In summation of the description above, the present invention improves over the prior art and complies with patent application requirements, and thus is duly filed for the patent application.
The present invention is illustrated with reference to the preferred embodiment and not intended to limit the patent scope of the present invention. Various substitutions and modifications have suggested in the foregoing description, and other will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the invention as defined in the appended claims.
