Solenoid valve with armature stop
AssigneeWalbro Corporation
InventorsDale P. Kus, David L. Thomas
Life of this patent
Estimating the term…
Abstract
A solenoid valve includes a housing, a bobbin and an armature. The bobbin is received at least partially within the housing and has and internal passage and a body about which a coil is provided. The armature is moveable relative to a valve seat and the valve includes an armature stop received in the internal passage with a press-fit so that it is engaged by the armature in one position of the armature to limit movement of the armature away from the valve seat. The valve also has a biasing member located at least partially between the armature and the armature stop, the armature has a reduced diameter portion received at least partially within the biasing member, and wherein the reduced diameter portion engages the armature stop in the open position of the valve.
Claims13
A solenoid valve, comprising:
- a housing;
- a bobbin received at least partially within the housing and having a body about which a coil is provided, an internal passage that is open at one end and two terminal cavities extending axially relative to an axis of the bobbin;
- two electrical terminals each received in a different one of the terminal cavities;
- a fluid flow path including an inlet and an outlet and a valve seat defined by at least one of the housing or the bobbin;
- an armature received within the internal passage and moveable relative to the valve seat to control flow through the fluid flow path;
- an armature stop received at least in part in the internal passage with a press-fit so that it is engaged by the armature in one position of the armature to limit movement of the armature away from the valve seat, the armature stop having a head at least part of which is received between the terminal cavities;
- and
- a biasing member located at least partially between the armature and the armature stop, wherein the armature has a reduced diameter portion received at least partially within the biasing member, and wherein the reduced diameter portion engages the armature stop in the open position of the valve.
A solenoid valve, comprising:
- a housing;
- a bobbin received at least partially within the housing and having a body about which a coil is provided, an internal passage that is open at one end, a flange extending radially outwardly relative to the internal passage, and two terminal cavities formed in the flange extending axially relative to an axis of the bobbin;
- two electrical terminals each received in a different one of the terminal cavities and coupled to the coil;
- a fluid flow path including an inlet and an outlet and a valve seat defined by at least one of the housing or the bobbin;
- an armature received within the internal passage and moveable relative to the valve seat to control flow through the fluid flow path;
- an armature stop received at least in part in the internal passage with a press-fit so that it is engaged by the armature in one position of the armature to limit movement of the armature away from the valve seat, wherein the armature stop has a head that overlies the internal passage, and wherein the armature stop has an axially extending boss extending from the head;
- and
- a cap having an axially oriented opening into which the boss is received and axially oriented slots through which the electrical terminals extend.
Dependencies are inferred from the claim text.