Abstract
A switch assembly has a switch unit and a separating cap. The switch unit has a pressing element. The separating cap is attached to the switch unit and encloses the pressing element. Accordingly, glue filled into an object in which the switch assembly is mounted can be kept from attaching to the pressing element and the operation accuracy of the switch unit can be improved.
Claims
1. An encapsulated push switch comprising: a switch unit having a pressing element mounted on a top of the switch unit; and a separating cap attached to the switch unit and enclosing the pressing element, wherein the separating cap comprises a cap board having a side facing the switch unit; and an annular flange formed on and protruding from the side of the cap board and enclosing the pressing element and having a side opposite the cap board that is attached to the top of the switch unit on which the pressing element is mounted in a sealed manner.
2. (canceled)
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a top view of a switch assembly in accordance with the present invention connected with an electrical module;
[0010] FIG. 2 is an enlarged exploded side view in partial section of the switch assembly in FIG. 1;
[0011] FIG. 3 is an enlarged side view in partial section of the switch assembly along the line 3-3 in FIG. 1;
[0012] FIG. 4 is an enlarged side view in partial section of the switch assembly in FIG. 1, shown mounted in a thin object;
[0013] FIG. 5 is a top view of a conventional switch assembly connected with an electrical module; and
[0014] FIG. 6 is an enlarged side view in partial section of the switch assembly in FIG. 5, shown mounted in a thin object.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0015] With reference to FIGS. 1 to 3, a switch assembly in accordance with the present invention is applied to connect with an electrical module 10 and comprises a switch unit 20 and a separating cap 30. The switch unit 20 is electrically connected with the electrical module 10 and has a pressing element 21 protruding from a center of the switch unit 20. The separating cap 30 is attached to the switch unit 20 and encloses the pressing element 21. The separating cap 30 comprises a cap board 31 and an annular flange 32. The cap board 31 may be circular and has a side facing the switch unit 20. The annular flange 32 is formed on and protrudes from the side of the cap board 31. The annular flange 32 has a side opposite the cap board 31 that is attached to the switch unit 20 by glue, thermal fusion, or Ultrasonic bonding to enclose the pressing element 21 inside the annular flange 32 in a sealed manner.
[0016] With reference to FIG. 4, when the switch unit 20 and the electrical module 10 are mounted in a thin object 40, such as a card, the glue filled into the object 40 can be separated from and kept from attaching to the pressing element 21 because the separating cap 30 is attached to the switch unit 20 to enclose the pressing element 21 in a sealed manner. Therefore, insufficient contact or malfunction of the pressing element 21 caused by the glue is prevented, and the operation accuracy of the switch unit 20 can be improved.
[0017] 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 function of the invention, the disclosure is illustrative only, and changes may be made in detail, 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.
