Patent Application
20170084366
This application claims priority of Taiwanese Application No. 104215362, filed on Sep. 23, 2015.
The disclosure relates to a resistor, more particularly to a resistor including a body and two connecting members that are welded to the body.
Referring to
Since the overall resistance value of a metal or an alloy is affected by its shape and curvature, the configuration of the arc-shaped shoulder parts 12 is a factor that affects the overall resistance value of the conventional resistor 1. During mass production, dimensional tolerance of the shoulder parts 12 undesirably leads to variations of the overall resistance values of the conventional resistors 1.
In addition, the conventional resistor 1 is usually small in size. A specification of the conventional resistor 1, which specifies a height (h1) from the connecting members 13 to the body 11 equal to 0.5±0.15 mm with a tolerance limit of 1%, is relatively difficult to achieve due to tolerance limitations of the stamping technique.
Therefore, an object of the disclosure is to provide a resistor that can alleviate at least one of the drawbacks of the prior art.
According to the disclosure, the resistor includes a body and two connecting members. The body is made from an ohmic material and has two opposite side faces. Each of the connecting members has a side surface that has a connecting region welded to a respective one of the side faces of the body.
Other features and advantages of the disclosure will become apparent in the following detailed description of the embodiments with reference to the accompanying drawings, of which:
Before the disclosure is described in greater detail, it should be noted that where considered appropriate, reference numerals or terminal portions of reference numerals have been repeated among the figures to indicate corresponding or analogous elements, which may optionally have similar characteristics.
Referring to
The body 21 is made from an ohmic material and has two opposite side faces 211. In this embodiment, the body 21 is made from an alloy including iron, chromium, and aluminum.
In this embodiment, the body 21 is cuboid in shape, and each of the side faces 211 is rectangular in shape.
Each of the connecting members 22 has a side surface 221 that has a connecting region 222 welded to a respective one of the side faces 211 of the body 21. The connecting region 222 of each of the connecting members 22 completely overlaps a respective one of the side faces 211 of the body 21. In this embodiment, the connecting members 22 are made from an alloy including copper, and each of the connecting members 22 is cuboid in shape. The side surface 221 of each of the connecting members 22 is rectangular in shape. In this embodiment, each of the side faces 221 has a first width (w1), and the connecting region 222 of the side surface 221 of each of the connecting members 22 has a second width (w2) that is identical to the first width (w1).
More specifically, the connecting region 222 of the side surface 221 of each of the connecting members 22 is welded to the respective one of the side faces 211 of the body 21 using an electron beam welding technique. In a process of performing the electron beam welding technique, a plurality of electrons are first emitted from a cathode of a heating filament in a vacuum chamber. Then, the emitted electrons are accelerated under a voltage ranging from 30 KV to 200 KV, and are passed through an electromagnetic lens to be concentrated into an electron beam that has a power density ranging from 105 W/cm2 to 109 W/cm2. The electron beam can be used for welding by transforming kinetic energy into thermal energy, thereby achieving precise welding.
Referring to
In practical use, the resistor of this disclosure is electrically connected to the targeted electronic equipment. When an electric current subsequently flows through one of the connecting members 22, the body 21, and the other one of the connecting members 22, a desired resistance is offered by the resistor.
To sum up, in this disclosure, the connecting members 22 are connected to the body 21 by a welding technique such as the electron beam welding technique, thereby achieving precise and automated manufacturing of the resistor. Furthermore, the body 21 and the connecting members 22 are not deformed during manufacturing, thereby eliminating the drawbacks associated with the conventional stamping technique, and achieving precise control of the resistance value of the resistor.
In the description above, for the purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiment(s). It will be apparent, however, to one skilled in the art, that one or more other embodiments may be practiced without some of these specific details. It should also be appreciated that reference throughout this specification to “one embodiment,” “an embodiment,” an embodiment with an indication of an ordinal number and so forth means that a particular feature, structure, or characteristic may be included in the practice of the disclosure. It should be further appreciated that in the description, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of various inventive aspects.
While the disclosure has been described in connection with what is (are) considered the exemplary embodiment(s), it is understood that this disclosure is not limited to the disclosed embodiment(s) but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements.
| Number | Date | Country | Kind |
|---|---|---|---|
| 104215362 | Sep 2015 | TW | national |
