Inductive device

Abstract

The sensing device includes following parts: a hollow seat; two terminal units with opposite first side face and second side face installed and positioned inside the hollow seat; current conducting ball located in a accommodation hole in the seat and position-limited by the terminal units. Each terminal unit includes separated a first terminal and a second terminal. Each first terminal and second terminal possesses a main body portion, a terminal portion extended from the main body portion along upright direction, and an extension portion extended from inner side face of the main body portion along horizontal direction. When the sensing device is installed on a circuit base plate vertically, the ball contacts second terminals only so that the sensing device is in off state. When the sensing device is tilted, the ball contacts first terminals and second terminals as well so that the sensing device is in on state. The invention possesses good sensing effect.

Description

technical field [0001] The invention relates to a switch, in particular to an induction device for electronic products. Background technique [0002] Referring to FIG. 1 and FIG. 2 , a conventional ball switch 100 has a housing 101 , a ball 102 , four terminals 103 and a block 104 . [0003] When assembling, put the ball 102 into the housing 101, and block the opening of the housing 101 with the block 104 to block the ball 102, and then use a jig (not shown) to insert the terminal 103 into the housing 101. The four through holes 1041 of the block 104 to each taper portion 1031 extend into the housing 101 to complete the assembly. [0004] Although the ball switch 100 can achieve conduction through the ball 102 contacting the taper portion 1031, since the terminal 103 is in a suspended state when inserted into the housing 101, the precision of the jig operation must be very high. In order to make the taper 1031 flush to produce switching action, as long as there is a slight...

AI Technical Summary

Problems solved by technology

[0004] Although the ball switch 100 can achieve conduction through the ball 102 contacting the taper portion 1031, since the terminal 103 is in a suspended state when inserted into the housing 101, the precision of the jig operation must be very high. In order to make the taper 1031 flush to produce switching action, as long as there is a slight difference in position, it will lose its function. In addition, the terminal 103 is only positioned by inserting into the through hole 1041, which is not stable and is easily caused by external force factors. Shaking will affect the sensing sensitivity of the ball switch 100

[0005] The ball switch 100 can be installed upright on a circuit board 105 as shown in FIG. 2 for use in a normally open state. It can also be installed on the circuit board 105 by first bending the terminal 103 as shown in FIG. 3 . Make an included angle θ between the housing 101 and the circuit substrate 105 for the use mode of the normally closed state. Since the housing 101 is suspended in the air, it is easy to change the included angle θ due to external force factors, causing the ball switch 100 to lose its function. quality of use

[0006] In addition, the ball 102 of the ball switch 100 will contact the housing 101 during the rolling process. When the housing 101 is not cleaned during packaging and dust remains, the dust will stick to the surface of the ball 102, resulting in the The conductivity between the ball 102 and the terminal 103 becomes poor, which in turn affects the conduction effect of the ball switch

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