KR20080054304A - Open-close apparatus and brake having open-close apparatus - Google Patents

Abstract

An opening/closing device and a brake apparatus using the same are provided to reduce a manufacturing cost and to reduce weight by forming a capsule in a liquid chamber of a body. An opening/closing device comprises a body(110), a spool(160), and an operation unit(200). The body has a stator, an armature(140), an inlet(114), and an outlet(116). The stator is placed in the body. The armature is assembled at a lower part of the stator to be slid using an elastic member(130). The inlet and the outlet are connected to a sealed liquid chamber(112). A filter member(170) is formed at a periphery of the inlet of the body to filter operation oil. The spool is placed at the liquid chamber of the body to open or close the outlet of the body, and has a discharge path to shaft direction. The operation unit connects the armature and the spool, and closes the outlet or the discharge path by using elastic supporting force of the elastic member or opens the discharge path using liquid pressure of the operation oil. The operation unit is magnetized when external power is supplied, and opens the outlet using the armature.

Description

Switchgear and brake device using same

1 is a circuit diagram of a general brake.

Figure 2a and Figure 2b is a cross-sectional view showing the internal structure of the opening valve of the conventional brake.

Figure 3 is a sectional view showing the opening and closing device of the brake according to the present invention.

4a and 4b is a view showing the operation of the opening and closing device of the brake according to the invention.

* Description of the symbols for the main parts of the drawings *

110: body 112: liquid chamber

114: input port 116: discharge port

120: stator 130: elastic member

140: Amateur 150: Coil

160: spool 170: filter member

180: sheet 200: operating portion

210: boss 220: opening and closing knob

230: capsule 240: first locking member

250: second locking member

The present invention relates to an opening and closing device and a brake device using the same, and more particularly, by removing the spring parts inside the solenoid valve used in the anti-lock brake device, by providing an injection molded capsule to guide the rise of the spool. In addition to the structure, the present invention relates to a switchgear and a brake device using the same to reduce manufacturing cost and reduce weight of parts.

In general, an anti-lock brake system (ABS) braking system of a vehicle provides a braking force by pressurizing the brake unit by hydraulic pressure when the driver first presses the brake pedal, and at this time, a sudden high pressure is applied at a certain speed or more. When brake power is applied, a sliding phenomenon occurs between the wheel and the road surface, which causes a safety accident. To prevent this, the hydraulic pressure that presses the brake part is controlled to release the braking power continuously and wound up to prevent the vehicle from slipping safely. It is to make braking work.

The anti-lock brake system braking device inevitably includes a solenoid valve that allows the brake to be safely performed without slipping even when the brake pedal is pressed to change the flow of hydraulic pressure applied from the master cylinder to the brake unit. As shown in FIG. 1, between the wheels 2 and 3 connected to the pedal 1, an opening valve 10 and a closing valve 20 are provided in a pair. .

Such solenoid valves have been used in various ways until now, and as an example thereof, as shown in FIGS. 2A and 2B, there is a GB PATENT A 2179110.

As shown in FIGS. 2A and 2B, the opening valve 10 has a solenoid coil 11 that generates a magnetic field in response to a signal, and a fixed iron core 12 that becomes an electromagnet by the magnetic field generated by the solenoid coil 11. And, the plunger 13, which is pulled to the fixed iron core 12 which becomes an electromagnet, and the ball valve seat 15 in the brake wheel cylinder connection passage 14 is in close contact with or separated from the master cylinder connection passage (16) The ball valve 17 for blocking or connecting the brake wheel cylinder connection flow passage 14 and the plunger 13 when the electrical signal is not input to the solenoid coil 11 are removed from the fixed core 12. An elastic member 18 for holding and a flow path 19 around the plunger 13 to ensure a normal flow in the initial state, the closing valve 20 is a solenoid for generating a magnetic field in response to the electrical signal of the controller Coil 11a and the solenoid The ball in the low pressure tank connecting flow path 22 and the plunger 21 which are attracted to the fixed iron core 12a which becomes an electromagnet by the magnetic field which generate | occur | produced in the decoil 11a, and the said fixed iron core 12a which became the electromagnet, An electrical signal is input to the ball valve 25 and the solenoid coil 11a that are in close or close contact with the valve seat 23 to block or connect the brake wheel cylinder connection flow passage 24 and the low pressure tank connection flow passage 22. When not, the elastic member 26 for keeping the plunger 21 separated from the fixed core 12a, and the flow path 27 and the internal flow path around the plunger 21 to ensure the normal flow in the initial state ( 28).

However, since the solenoid valve of the conventional anti-lock brake system configured as described above is provided with a plurality of passage flow paths in the plunger, excessive processing time is required and its structure is complicated, so that the manufacturing cost is increased during manufacturing. And there is a problem that productivity is lowered and maintenance is difficult.

In addition, when the elastic force of the elastic member is reduced by the exclusion of the elastic member, there is a problem in that the structure is complicated while the function is degraded due to the decrease in response.

The present invention has been proposed to solve the above problems of the prior art, while reducing the number of springs in the solenoid valve used in the anti-lock brake device while replacing it with an injection-molded capsule, while simplifying the structure while preventing the elastic force degradation The purpose of the present invention is to provide a switchgear and a brake device using the same, which can reduce the manufacturing cost and reduce the weight of the parts.

The present invention for achieving the above object is provided with a stator fixed to the inside of the upper and the lower body of the armature is connected to the elastic member to form a slide movable and the body in communication with the input port and the outlet in the sealed liquid chamber and And a spool formed in the liquid chamber of the body so as to open and close the outlet and forming a discharge passage in an axial direction, and formed to connect between the armature and the spool, by the elastic support force of the elastic member. Including the operating portion to close the or open the discharge passage by the hydraulic pressure of the hydraulic fluid flowing into the liquid chamber and to open the discharge port by the armature which is magnetized during the external power supply to the stator direction due to the attraction force Characterized in that made.

In addition, the present invention is provided with a stator fixed to the inside of the upper and the lower body of the armature is connected to the elastic member to form a sliding movement, and the body in communication with the input port and the discharge port in the sealed interior liquid chamber, the liquid chamber of the body A spool formed to be openable to open and close the discharge port and forming a discharge flow path in an axial direction, and formed to connect between the armature and the spool to close the discharge port and the discharge flow path by the elastic support force of the elastic member or to the liquid chamber. And an operating part operable to open the discharge passage by the hydraulic pressure of the working oil and open the discharge port by the armature which is magnetized during external power supply and rises toward the stator due to the attraction force. The boss which extends to the lower part of the amateur as a part, An opening / closing knob protruding downwardly from the boss to close the outlet by pressing the spool while opening and closing an upper portion of the discharge spool of the air spool or pushing downward with the armature and the boss by the elastic restoring force of the elastic member; It is provided to be able to reciprocate in the axial direction of the armature inside the liquid chamber and communicates with the upper and lower portions to insert the boss and the spool therein, and forms an opening in the circumference to guide the hydraulic oil flowing into the liquid chamber to the inside A capsule for lifting the spool together to open the discharge port while being caught by the armature rising by the attraction force in the stator direction, and formed around an inner circumference of the upper end of the capsule and an outer circumference of the boss to flow into the opening hole. Raise the capsule with the boss raised by the hydraulic pressure of hydraulic fluid A first locking member for opening the discharge flow path while being opened, and formed around the inner circumference of the lower end of the capsule and the outer circumference of the spool to hang the capsule on the arm that is raised by generating an attraction force in the stator direction. A brake device for an automobile having an opening and closing device, comprising: a second locking member configured to ascend together and open the outlet.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

Figure 3 is a cross-sectional view showing the opening and closing device of the brake according to the present invention, Figures 4a and 4b is an operation diagram showing an open state of the opening and closing device of the brake according to the present invention.

As shown in FIG. 3, the opening and closing device according to the present invention has an outer shape as the body 110.

The body 110 is formed to communicate with the upper and lower parts to the outside, the stator (stator, 120) is fixed to the upper inside.

The stator 120 is provided to seal the top of the body 110.

In addition, the body 110 forms a liquid chamber 112 therein, and is provided with an input port 114 at the circumference thereof to receive external hydraulic oil.

In addition, the body 110 guides the hydraulic oil discharged by opening the lower portion to form the discharge port 116 to the lower portion.

In particular, the stator 120 has an elastic member 130 at the bottom.

The elastic member 130 is a coil spring.

The elastic member 130 connects the armature (140) in the lower portion.

In this case, the armature 140 is formed to be in contact with the inner surface of the body 110, the slide linear reciprocating movement along the axial direction of the body 110.

Of course, the armature 140 is always pushed downward by the elastic member 130 when removing the external force.

In addition, the coil 150 is provided on the inner surface of the body 110.

The coil 150 forms a magnetic field when the external power is supplied. Accordingly, the stator 120 and the armature 140 are magnetized to generate attraction force with each other.

Therefore, the armature 140 moves in the direction of the stator 120 when the external power is supplied.

In addition, the body 110 includes a spool 160 inside the liquid chamber 112.

The spool 160 serves to open and close the outlet 116 of the body 110.

In addition, the spool 160 forms a discharge flow path 162 in the axial direction, and when the spool 160 is installed, the discharge flow path 162 is connected to the discharge port 116 so as to flow the discharged hydraulic fluid.

Meanwhile, the body 110 filters the hydraulic oil flowing into the liquid chamber 112 by integrally forming the filter member 170 around the input port 114.

In addition, in order to prevent the body 110 from being damaged due to direct contact with the inner surface of the body 110 corresponding to the upper end of the outlet 116, the seat 180 is formed inside the body 110. It is further provided.

The seat 180 is seated on the lower portion of the liquid chamber 112 and forms a guide path 182 to be connected to the outlet 116 and the discharge passage 162.

In addition, the sheet 180 forms an inclined surface 184 at an edge corresponding to the upper portion of the guide path 182.

The inclined surface 184 increases the contact area with the spool 160 around the spool 160 to change the diameter of the spool 160 or to apply the spool 160 having various diameters, and to friction according to the contact with the spool 160. Reduce the interference so as not to interfere with the rising spool 160.

On the other hand, the operating unit 200 is provided between the armature 140 and the spool 160.

The operation unit 200 is formed to connect between the armature 140 and the spool 160, the input port 114 by the elastic support of the elastic member 130 and the hydraulic pressure of the hydraulic fluid flowing through the input port 114 ) And the discharge passage 162 in order to close the discharge passage 162 and the input port 114 by the armature 140 that is magnetized when the external power supply is supplied to the stator 120 due to the attraction force Works to open.

More specifically, the operation unit 200 is composed of a boss 210, opening and closing knob 220, capsule 230, the first locking member 240 and the second locking member 250.

The boss 210 extends to the lower portion of the armature 140.

At this time, the boss 210 may be made of the same diameter as the armature 140, but is shown as smaller than the diameter of the armature 140.

In addition, the opening and closing knob 220 protrudes downward from the boss 210 to open and close the discharge passage 162 of the spool 160.

That is, the opening and closing knob 220 closes the discharge flow path 162 while acting a pushing force downward with the armature 140 and the boss 210 by the elastic support force of the elastic member 130, and subsequently the spool Press 160 to close the outlet 116.

In addition, the opening and closing knob 220 discharges the hydraulic fluid to the discharge passage 162 of the spool 160 while opening the discharge passage 162 while being pushed upward by a predetermined amount of operating oil. Induces a pressure drop.

In addition, the capsule 230 is provided to reciprocate in the axial direction of the armature 140 in the liquid chamber 112, so that the boss 210 and the spool 160 to be communicated in the upper and lower parts to be inserted therein. Is formed.

In particular, the capsule 230 is caught by the boss 210 that is raised by the armature 140 rising in the direction of the stator 120 as the magnetization occurs when the external power is supplied to generate the attraction force, the spool 160 By walking together to open the outlet 116 to discharge the working oil to the outlet 116 serves to induce a pressure drop of the liquid chamber 112 secondary.

In addition, the first catching member 240 hangs the capsule 230 to the boss 210 that rises by the hydraulic pressure of the hydraulic oil introduced into the liquid chamber 112, thereby raising the capsule 230 together, thereby preventing the spool 160 from being spooled. It serves to open the discharge passage 162.

That is, the first catching member 240 protrudes around the outer periphery of the boss 210 to be caught by the upper catching protrusion 242 and the upper catching protrusion 242 protruding along the upper periphery of the capsule 230. It consists of a hook 244.

In addition, the second locking member 250 is the body by raising the spool 160 to the capsule 230, which is further raised by the armature 140 rising in the direction of the stator 120 as the attraction force to each other rises together It serves to open the outlet 116 of 110.

That is, the second catching member 250 protrudes around the outer periphery of the seat 180 so as to be caught by the lower catching protrusion 252 and the lower catching protrusion 252 protruding around the upper end of the capsule 230. It consists of a hook 254.

Hereinafter, the operating state of the switchgear configured as described above will be described in detail.

First, Figure 3 shows a closed state of the opening and closing device according to the present invention.

That is, the elastic member 130 connected to the lower portion of the stator 120 pushes the armature 140 downward, and this force lowers the boss 210 and the opening / closing knob 220 formed at the lower portion of the armature 140. Will be pushed in the direction.

At this time, the spool 160 having the discharge passage 162 is provided at the lower portion of the opening and closing knob 220, the opening and closing knob 220 is pushed in the downward direction while the discharge passage 162 of the spool 160 Will be blocked.

Subsequently, the opening and closing knob 220 pushes the spool 160 to block the guide path 182 of the seat 180 such that the hydraulic oil stored in the liquid chamber 112 is not discharged through the outlet 116 of the body 110. do.

On the other hand, as shown in Figure 4a, the liquid chamber 112 by the hydraulic fluid flowing into the liquid chamber 112 through the input port 114 of the body 110 forms a predetermined or more hydraulic pressure.

In particular, the hydraulic oil is introduced into the interior through the opening hole 232 of the capsule 230 to push up the lower portion of the boss 210 in the upper direction.

At this time, while the boss 210 is upward, the capsule 230 is raised together by the first locking member 240.

In addition, in the second locking member 250 connecting the lower portion of the capsule 230 and the spool 160, the lower locking protrusion 252 and the lower hook 254 have a predetermined clearance distance, the boss 210. ) And the capsule 230 are raised together, the lower locking projection 252 and the lower hook 254 of the second locking member 250 is caught while being spaced apart between the opening and closing knob 220 and the discharge passage 162. Will be interfered with.

Accordingly, as the discharge passage 162 is opened, the working oil in the liquid chamber 112 is discharged to the outside through the discharge passage 162, the guide passage 182, and the discharge port 116, and thus the inside of the liquid chamber 112 is primarily. Pressure is reduced.

Then, as shown in FIG. 4B, when the coil 150 provided in the body 110 is supplied with external power, the stator 120 and the armature 140 are magnetized to generate attraction force with each other.

Thus, the armature 140 rises in the fixed stator 120 direction.

Thus, the boss 210 further raises the capsule 230 by the first catching member 240, and accordingly, the spool 160 is further raised by the second catching member 250.

Accordingly, the spool 160 ascends and is spaced apart from the seat 180 so that the hydraulic fluid is discharged through the guide path 182 and the discharge port 116, and the inside of the liquid chamber 112 is secondarily depressurized.

Unexplained reference numerals in the drawings of FIGS. 4A and 4B replace those described above.

Thereafter, when the power supplied to the coil 150 is cut off, the armature 140 is pushed down by the self-healing and the elastic restoring force of the elastic member 130 to push the spool 160 to return to the state as shown in FIG.

Looking at the operation of the opening and closing device according to the invention configured as described above and the brake device using the same as follows.

The economical point of view is provided with a capsule 230 which is an injection molded product while removing the spring inside the solenoid valve, the capsule 230 is moved in conjunction with each other by connecting the armature 140 and the spool 160, This structure opens and closes the solenoid valve applied to the anti-lock brake system.

In other words, when the brake pedal is suddenly relaxed, the pressure of the brake is automatically lowered according to the relaxation of the pedal before the electronic control unit detects it.

The switching device according to the invention makes it possible to automatically reduce the braking pressure after the brake pedal is relaxed.

When the brake pedal is relaxed, in the opening and closing device, the solenoid valve is opened.

  As described above, the opening and closing device according to the present invention and the brake device using the same are provided with a capsule, which is an injection molded product, in the liquid chamber of the solenoid valve, and linearly reciprocates and connects the armature and the spool that operate to open and close the solenoid valve to be linked together. By this, the opening and closing operation can be improved, manufacturing cost can be reduced due to the simple structure, and the weight of parts can be reduced due to the injection of the capsule.

Claims (8)

A body having a stator fixed inside the upper part and configured to slide the armature connected to the elastic member at the lower part thereof, and to communicate the input and discharge ports to the sealed liquid chamber; A spool provided in the liquid chamber of the body so as to open and close the outlet and forming a discharge passage in an axial direction; It is formed to connect between the armature and the spool to close the discharge port and the discharge flow path by the elastic support of the elastic member or to open the discharge flow path by the hydraulic pressure of the working oil flowing into the liquid chamber and magnetized when the external power supply And an operating part operable to open the discharge port by the armature rising in the stator direction due to the opening and closing device. The method of claim 1, The body is an opening and closing device, characterized in that for filtering the hydraulic fluid flowing in by forming a filter member around the input port is located. The method of claim 1, The body has a seat at the bottom of the liquid chamber to prevent direct contact with the spool; The sheet is an opening and closing device, characterized in that for guiding the discharge of the operating oil to form a guide passage in communication with the discharge passage and the discharge port. The method of claim 3, wherein The sheet is characterized in that the inclined surface around the upper edge of the guideway to extend the contactable portion of the lower portion of the spool. The method of claim 1, The operating unit and the boss is formed to extend to the lower portion of the armature; The discharge flow path while closing the discharge flow path while exerting a downward force together with the armature and the boss by the elastic support force of the elastic member and pressing the spool to close the discharge port or pushed upwards by the operating oil introduced into the discharge flow path An open / close knob protruding from the lower portion of the boss to open the boss; It is provided to be able to reciprocate in the axial direction of the armature in the liquid chamber and communicate with the upper and lower portions to insert the boss and the spool therein, and forms an opening in the periphery to guide the hydraulic fluid flowing into the liquid chamber to the inside. A capsule for opening the outlet by lifting the spool together while being caught by the armature rising by the attraction force in the stator direction; A first catching member formed at an inner circumference of the upper end of the capsule and an outer circumference of the boss to open the discharge passage while raising the capsule with the boss raised by the hydraulic pressure of the hydraulic oil flowing into the opening; And a second locking member formed on an inner circumference of the lower end of the capsule and an outer circumference of the spool to raise the spool together when the capsule is moved to the armature that is raised by generating an attractive force in the stator direction and open the outlet. Switchgear, characterized in that consisting of. The method of claim 5, The first catching member has an upper catching protrusion formed protruding around the upper end of the capsule; Opening and closing device characterized in that consisting of an upper hook protruding around the outer side of the boss so as to catch the upper locking projection. The method of claim 5, The second catching member may include a lower catching protrusion protruding around the upper end of the capsule; Opening and closing device characterized in that consisting of a lower hook protruding around the outer side of the sheet to be caught by the lower locking projection. A body having a stator fixed inside the upper part and configured to slide the armature connected to the elastic member at the lower part thereof, and to communicate the input and discharge ports to the sealed liquid chamber; A spool provided in the liquid chamber of the body so as to open and close the outlet and forming a discharge passage in an axial direction; It is formed to connect between the armature and the spool to close the discharge port and the discharge flow path by the elastic support of the elastic member or to open the discharge flow path by the hydraulic pressure of the working oil flowing into the liquid chamber and magnetized when the external power supply And an operating part operable to open the outlet by the armature rising in the stator direction due to The operating unit and the boss is formed to extend to the lower portion of the armature; The discharge flow path while closing the discharge flow path while exerting a downward force together with the armature and the boss by the elastic support force of the elastic member and pressing the spool to close the discharge port or pushed upwards by the operating oil introduced into the discharge flow path An open / close knob protruding from the lower portion of the boss to open the boss; It is provided to be able to reciprocate in the axial direction of the armature in the liquid chamber and communicate with the upper and lower portions to insert the boss and the spool therein, and forms an opening in the periphery to guide the hydraulic fluid flowing into the liquid chamber to the inside. A capsule for opening the outlet by lifting the spool together while being caught by the armature rising by the attraction force in the stator direction; A first catching member formed at an inner circumference of the upper end of the capsule and an outer circumference of the boss to open the discharge passage while raising the capsule with the boss raised by the hydraulic pressure of the hydraulic oil flowing into the opening; And a second locking member formed on an inner circumference of the lower end of the capsule and an outer circumference of the spool to raise the spool together when the capsule is moved to the armature that is raised by generating an attractive force in the stator direction and open the outlet. Brake apparatus for a vehicle, characterized in that it comprises an opening and closing device made.

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