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A rotary DIP switch includes a base having a receiving space and a shaft, a plurality of fixed contact terminals having fixed contact portions exposed in the receiving space, and a contact plate having a plurality of movable contact portions to contact the fixed contact portions. A rotary member is disposed above the contact plate, and includes a press plate having a periphery interconnecting radial top and bottom faces thereof, and a plurality of press members to respectively press the movable contact portions against the fixed contact portions. The periphery has an axially extending first face, and an inclined second face. A top cover covers the rotary member, and includes two wing plates each having a tongue plate with an abutment portion to abut against the second face.

1. A rotary DIP switch comprising: a base having a receiving space indented downwardly from a top face thereof, and a shaft disposed in said receiving space; a plurality of fixed contact terminals fixed to said base and having fixed contact portions exposed in said receiving space; a contact plate disposed in said receiving space above said fixed contact terminals and sleeved around said shaft, said contact plate including a plurality of movable contact portions to contact said fixed contact portions; a rotary member disposed in said receiving space above said contact plate, and including a press plate having radial top and bottom faces, a central sleeve portion sleeved on said shaft and having a central hole for receiving said shaft, and a plurality of press members disposed around said central sleeve portion to respectively press said movable contact portions against said fixed contact portions, said press plate having a periphery interconnecting said radial top and bottom faces, said periphery having an axially extending first face and an inclined second face, said first face extending from one of said radial bottom and top faces and axially of said shaft, said second face extending inclinedly and inwardly from said first face to the other one of said radial bottom and top faces; and a top cover covering said rotary member and including a top plate that has a through hole, two connecting plates extending downwardly and respectively from two opposite ends of said top plate and engaged to said base, and two wing plates extending downwardly and respectively from two other opposite ends of said top plate, each of said wing plates having a tongue plate projecting inwardly from a respective one of said wing plates, said tongue plate having a resilient bent portion, and an abutment portion formed on said bent portion to abut against said second face.

2. The rotary DIP switch of claim 1, wherein said rotary member further includes a circular projection projecting upwardly from said radial top face into said through hole in said top cover, and a recess that is formed in said circular projection and that is exposed on said top cover.

3. The rotary DIP switch of claim 2, wherein said second face extends inclinedly and inwardly from said one of said first face at an angle of 15¡ã to 70¡ã.

4. The rotary DIP switches of claim 1, wherein said second face extends inclinedly and inwardly from said first face at an angle of 45¡ã.

5. The rotary DIP switch of claim 1, wherein said first face extends upwardly from said radial bottom face and axially of said shaft, and said second face extends inclinedly, inwardly, and upwardly from said first face to said radial top face.

6. The rotary DIP switch of claim 5, wherein said periphery of said rotary member further has a plurality of angularly spaced-apart grooves provided in said second face to releasably receive said abutment portion of said tongue plate.

7. The rotary DIP switch of claim 6, wherein each of said grooves is V-shaped, said top cover being made of a thin metal plate, said abutment portion of said tongue plate being V-shaped and being extendable into a corresponding one of said V-shaped grooves.

8. The rotary DIP switch of claim 1, wherein said first face extends downwardly from said radial top face and axially of said shaft, and said second face extends inclinedly, inwardly, and downwardly from said first face to said radial bottom face.

9. The rotary DIP switch of claim 8, wherein said periphery of said rotary member further has a plurality of angularly spaced-apart grooves provided in said second face to releasably receive said abutment portion of said tongue plate.