Patent Application
20100156589
1. Field of the Invention
The present invention relates to a resistor, especially to an explosion-proof resistor.
2. Description of the Prior Art
With reference to
One way to dry the cement filled in the body (20) is to bake the conventional resistor in an oven at 160° C. Such oven, however, may destroy the fuse component (22) which can only tolerate a temperature under 130° C. In practice, the aforementioned problem is solved by wind-drying the cement to make the conventional resistor. The wind-drying process requires extra space and longer manufacturing time, which result into ineffective production and low output quantity.
To overcome the shortcomings, the present invention provides a resistor to mitigate or obviate the aforementioned problems.
The main objective of the invention is to provide a resistor.
The resistor in accordance with the present invention comprises a body, a fuse component, a resistor component, a wire and a cover. The body comprises a top, a first positioning hole and a second positioning hole being formed in the top of the body. The fuse component is inserted in the first positioning hole. The resistor component is inserted in the second positioning hole. The wire connects the fuse component and the resistor component and is mounted outside the body. The cover is attached to the top of the body around the wire. Therefore, the body of resistor as described may be dried in an oven without damaging the resistor component.
The present invention also directs to a method to make the resistor. The method has steps of forming a body having two positioning holes, drying the body in an oven heated above 130° C., mounting a resistor component and a fuse component respectively in the positioning holes, and covering the positioning holes with an insulating cover.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
The body (10) comprises a top, a bottom, a first positioning hole (11) and a second positioning hole (12), may have a recess (101) and may be cement or ceramic. The positioning holes (11, 12) are formed in the top of the body (10) and may further comprise terminal holes (111, 121). The terminal holes (111, 121) are formed in the bottom of the body (10) and respectively communicate with the positioning holes (11, 12). The recess (101) is formed in the top of the body and communicates with the positioning holes (11, 12). The fuse component (13) is mounted in the first positioning hole (11) and may have a terminal (131) being mounted through the terminal hole (111) of the first positioning hole (11) for electrical connection.
The resistor component (14) is mounted in the second positioning hole (12) and may have a terminal (141) being formed on the resistor component (14) and mounted through the terminal hole (121) of the second positioning hole (12) for electrical connection.
The wire (15) is mounted outside the body (10) and connects the fuse component (13) and the resistor component (14).
The cover is an insulator attached to the top of the body (10) covers the wire (15) and may be formed in the recess of the body. With further reference to
The resistor in accordance with the present invention effectively positions the fuse component (13) and the resistor component (14) in the first positioning hole (11) and the second positioning hole (12). The resistor also provides an effective means for insulating the exposed wire (15). Therefore, the body of resistor as described may be dried in an oven above 130° C. without damaging the resistor component so the resistor can be produced quickly, easily and more cost effectively.
With reference to
The body (10) may further comprise a top and a recess (101). The recess (101) is formed in the top of the body (10) and communicating with the positioning holes (11, 12), wherein a wire (15) is mounted in the recess (101). The body (10) may further comprises a bottom, a first positioning hole (11) and a second positioning hole (12). The first positioning hole (11) further comprises a terminal hole (111). The terminal hole (111) is formed in the bottom of the body (10) and communicates with the first positioning hole (11). The second positioning hole (12) further comprises a terminal hole (112). The terminal hole (112) is formed in the bottom of the body (10) and communicates with the second positioning hole (12).
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
