A brake traction control valve is disclosed. The brake traction control valve includes a valve core, a shell, an armature, an exciting coil, a plunger, and a return spring. The valve core has an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat prov
A brake traction control valve is disclosed. The brake traction control valve includes a valve core, a shell, an armature, an exciting coil, a plunger, and a return spring. The valve core has an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat provided with an orifice therein. The shell having a dome plus cylinder shape is coupled to the valve core to cover one end of the valve core. The armature is placed in the shell to move forward and backward. The exciting coil is placed around the shell to cause the armature to move forward and backward. The plunger is placed in the valve core to move forward and backward to selectively open and dose the orifice while moving forward and backward by the armature. The return spring returns the plunger and the armature to open the orifice. The plunger includes a first body brought into contact with the armature, a second body connected to one end of the first body to move forward and backward so as to selectively open and close the orifice, and a relief spring provided between the first and second bodies so that the second body is pushed by oil pressure when the oil pressure increases above predetermined pressure.
대표청구항▼
What is claimed is: 1. A brake traction control valve, comprising: a valve core having an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat provided with an orifice therein; a shell having a dome plus cylinder shape, the shell being coupled to the
What is claimed is: 1. A brake traction control valve, comprising: a valve core having an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat provided with an orifice therein; a shell having a dome plus cylinder shape, the shell being coupled to the valve core to cover one end of the valve core; an armature placed in the shell to move forward or backward; an exciting coil placed around the shell to cause the armature to move forward or backward; a plunger placed in the valve core to move forward or backward to open or close the orifice of the valve seat while moving forward or backward by an operation of the armature, the plunger consisting of: a first body brought into contact with the armature and provided with a stopper groove on the inside surface thereof; a second body connected to a lower end of the first body to move forward or backward so as to open or close the orifice of the valve seat, the second body having: an upper part provided for being at least partly inserted in the lower end of the first body and having a stopper protrusion provided for cooperating with the stopper groove; and a lower part having a spring support; and a relief spring arranged outside of the first body around a portion of the upper part of the second body, between the lower end of the first body and the spring support of the lower part of the second body, so that the second body is pushed by oil pressure when the oil pressure increases above a predetermined pressure, thereby opening the orifice, and a return spring to return the plunger and the armature to open the orifice of the valve seat. 2. The brake traction control valve as set forth in claim 1, wherein the stopper protrusion is constructed to slide within the stopper groove in a direction in which the second body moves forward or backward; and a width of the stopper protrusion is formed to be narrower than that of the stopper groove so that the upper end of the second body can move forward or backward within the lower end of the first body in a state in which the first and second bodies are combined with each other. 3. The brake traction control valve as set forth in claim 2, wherein a width of the stopper groove within which the stopper protrusion is able to slide is longer than a moving distance of the second body moving forward or backward within the first body so that movement of the second body within the first body is not hindered by the stopper groove and the stopper protrusion. 4. The brake traction control valve as set forth in claim 1, wherein the second body is provided with a ball-shaped closing member at an end thereof opposite to the first body, the closing member opening or closing the orifice of the valve seat. 5. The brake traction control valve as set forth in claim 4, wherein the closing member is integrated with the second body. 6. The brake traction control valve as set forth in claim 1, wherein the relief spring has an elastic force greater than that of the return spring. 7. A brake traction control valve including a valve core which have an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat provided with an orifice therein, and further including a shell, an armature placed in the shell and a plunger placed in the valve core to move forward or backward to open or close the orifice, the brake traction control valve comprising: a first body brought into contact with the armature and provided with a stopper groove on the inside surface thereof; a second body connected to one end of the first body to move forward or backward so as to open or close the orifice of the valve seat and provided with a stopper protrusion and a spring support on the outside surface thereof; and a relief spring provided outside of the first body and between the first and second bodies so that the second body is pushed by oil pressure when the oil pressure increases above a predetermined pressure, thereby opening the orifice. 8. A brake traction control valve, comprising: a valve core having an inlet to allow inside and outside of the valve core to communicate with each other, and a valve seat provided with an orifice therein; a shell having a dome plus cylinder shape, the shell being coupled to the valve core to cover one end of the valve core; an armature placed in the shell to move forward or backward; an exciting coil placed around the shell to cause the armature to move forward or backward; a plunger placed in the valve core to move forward or backward to open or close the orifice of the valve seat while moving forward or backward by an operation of the armature; and a return spring to return the plunger and the armature to open the orifice of the valve seat; wherein the plunger comprises a first body brought into contact with the armature, a second body connected to one end of the first body to move forward or backward so as to open or close the orifice of the valve seat, and a relief spring provided outside the first body and between the first and second bodies so that the second body is pushed by oil pressure when the oil pressure increases above a predetermined pressure, thereby opening the orifice.
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이 특허에 인용된 특허 (5)
Wilde Werner (Schwieberdingen DEX), Electromagnetically-actuated 2/2-way valve, for hydraulic motor vehicle brake systems having an anti-skid and traction c.
Alaze Norbert (Markgroeningen DEX) Megerle Friedrich (Asperg DEX) Wilde Werner (Schwieberdingen DEX) Kaes Guenter (Stuttgart DEX), Hydraulic brake system for motor vehicles.
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