Electric part protection member and assembling method therefor
An electric part protection member for a projecting contact terminal which projects from a supporting portion of an electric part, includes a bottomed cylindrical cap portion, adapted to be detachably placed over the supporting portion, wherein: the cap portion is formed of a conductive member; and when the cap portion is placed over the supporting portion, the cap portion is electrically connected to a housing of the electric part, and the contact terminals are spaced apart from the cap portion.
1. An electric part protection member for a projecting contact terminal which projects from a supporting portion of an electric part, comprising
a bottomed cylindrical cap portion structured to be detachably placed over the supporting portion, wherein:
the cap portion is formed of a conductive member; and
when the cap portion is placed over the supporting portion, the cap portion is electrically connected to a housing of the electric part, and the contact terminals are spaced apart from the cap portion.
2. The electric part protection member according to claim 1 , further comprising:
an engagement portion, formed on an inner circumferential surface of the cap portion, the engagement portion being adapted to be brought into engagement with a positioning portion formed on an outer circumferential surface of the supporting portion; and
a mark, indicating a position of the engagement portion, the mark being provided on an outer surface of the cap portion.
3. The electric part protection member according to claim 2 , wherein:
the cap portion is a bottomed cylindrical member; and
the mark is a flat plane formed on part of an outer circumferential surface of the cap portion.
4. The electric part protection member according to claim 2 , further comprising
a projecting portion, formed on the inner circumferential surface of the cap portion in a position which confronts the engagement portion.
5. The electric part protection member according to claim 4 , wherein
the projecting portion is extended from an opening portion of the cap portion towards a bottom portion side, with a larger extending amount on the bottom portion side than an opening portion side.
6. The electric part protection member according to claim 2 , wherein
the cap portion is formed with a slit extended from the opening portion to the bottom portion side.
7. The electric part protection member according to claim 2 , further comprising
a locking portion, formed on the outer circumferential surface of the cap portion, the locking portion being a raised portion extended in a circumferential direction.
8. The electric part protection member according to claim 2 , further comprising
a locking portion, formed on the outer circumferential surface of the cap portion, the locking portion being a recessed portion extended in a circumferential direction.
9. The electric part protection member according to claim 2 , wherein
the cap portion is formed by a conductive member and is electrically connected with a housing of the electric part.
10. The electric part protection member according to claim 2 , wherein
the electric part is a pressure sensor for use in a vehicle brake fluid pressure controlling unit and is designed to measure a brake fluid pressure within a fluid line which connects a master cylinder with a wheel brake.
11. The electric part protection member according to claim 1 , wherein the supporting portion extends from the housing, and has a diameter smaller than the housing.
12. The electric part protection member according to claim 1 , wherein the cap portion comprises an engagement portion that comprises a flat plane.
13. The electric part protection member according to claim 12 , wherein the supporting portion has a flat side surface for engaging with the engagement portion.
14. The electric part protection member according to claim 1 , wherein the cap portion comprises a cut-out plane which corresponds to an engagement portion formed on an inner circumferential surface of the cap portion, by forming part of a circumferential wall portion of the cap portion into a flat plate-like shape.
15. The electric part protection member according to claim 1 , further comprising projecting portions formed on an inner circumferential surface of the cap portion.
16. The electric part protection member according to claim 15 , wherein the projecting portions are arc shaped.
17. The electric part protection member according to claim 15 , wherein the projecting portions extend from a bottom portion to an opening side of the cap portion.
18. The electric part protection member according to claim 15 , wherein the projecting portions become larger at a bottom portion than at an opening side of the cap portion.
19. The electric part protection member according to claim 15 , further comprising slits formed in a circumferential wall of the cap portion at a first circumferential portion which confronts a flat plate like portion on another circumferential portion of the cap.
20. An assembling method for an electric part, comprising:
placing a cap portion of a protection member for a projecting contact terminal which projects from a supporting portion of an electric part, comprising a bottomed cylindrical cap portion adapted to be detachably placed over the supporting portion, on the supporting portion of the electric part; and
mounting the housing of the electric part on an other different part in a state that the cap portion is placed over the supporting portion, wherein:
the cap portion is formed of a conductive member;
when the cap portion is placed over the supporting portion, the cap portion is electrically connected to a housing of the electric part, and the contact terminals are spaced apart from the cap portion; and
when the mounting, static electricity, which flows to the cap portion from the outside, is released from the housing of the electric part via the other different part so that the cap portion is grounded.