KR100920467B1 - Panic Booster for a Vehicle - Google Patents

Abstract

The present invention relates to a panic booster for a vehicle, each having two air valves in order to maximize the output of the booster in the panic braking state, and inserting a sealing member therebetween, The two air valves are separated to form first and second air passages, and during normal operation only the first air passage is opened and closed, and during panic operation, the second air passage is opened and closed to increase the flow area by the second air passage. In order to provide an automobile panic booster which can increase air inflow and increase braking force, thereby improving performance, a push rod for transmitting an input in connection with a brake pedal (B / P), and the push rod Reaction De In the panic booster for automobiles provided with a scaffold in contact, one end portion is in contact with the reaction disk, the other side is provided with the push rod in contact with the inner diameter portion, and the projection for supporting the clip protrudes at a predetermined position centered on the outer circumferential surface thereof. A second air valve having a fixing caulking portion recessed in a circumferential direction to be fixed and supported by the push rod, and having a protrusion having a tapered shape at an outer predetermined position; A first air valve formed to contact the tapered shape of the second air valve and having an air valve protrusion protruding a predetermined height on one outer circumferential surface thereof; A clip provided to maintain a constant step of the power piston protrusion and the air valve protrusion; A control valve provided for contacting and sealing the power piston and the air valve protrusion, the control valve including a control valve spring and a support for supporting the air valve spring; A first air passage between the first air valve and the control valve; And a second air passage formed between the first air valve and the second control valve. By including, characterized in that for increasing the air inflow amount into the booster through the first air passage and the second air passage.

Panic booster, first air valve, second air valve, power piston, first air passage, second air passage

Description

Panic Booster for a Vehicle

1 is a view schematically showing a vehicle panic booster according to the prior art,

Figure 2 is a cross-sectional view schematically showing an enlarged power boosting device for a panic booster for a vehicle according to the prior art,

3 is a view schematically showing a car panic booster according to the present invention;

4 is a cross-sectional view schematically showing an enlarged power boosting device for a panic booster for a vehicle according to the present invention;

5 is a view schematically showing a normal operating state of a vehicle panic booster according to the present invention;

6 is a view schematically showing a panic operation state of a vehicle panic booster according to the present invention;

7 is a sectional view schematically showing an enlarged power boosting device for a panic booster for a vehicle according to an embodiment of the present invention;

8 is a cross-sectional view schematically showing an enlarged power supply apparatus of a vehicle panic booster according to another embodiment of the present invention;

9 is a cross-sectional view schematically showing an enlarged power supply apparatus of a vehicle panic booster according to another embodiment of the present invention;

10 is a cross-sectional view schematically showing an enlarged panic operation state of the vehicle panic booster according to the present embodiment.

<Explanation of symbols for the main parts of the drawings>

1: panic booster 2: front housing

3: rear housing 13: power piston

14: Clip 15: Spring Retainer

16: support 17: sealing member

18: air valve spring 19: control valve spring

20: control valve 21: insert

22: inner lip seal 23: outer lip seal

24, 43: 1st air valve 25, 44: 2nd air valve

25 ': second air valve protrusion 26: groove

27: O-ring 28, 45: first air valve support

29, 46: 2nd air valve support part 30, 55: Lip seal

31: control valve hole 32: fixing caulking portion

33: clip support protrusion 34: power piston protrusion

35: air valve protrusion 36: dish type spring

37: Saucer Spring Air Path

38, 54: Jaw fixing plate

39: control valve integrated control valve

40: connection portion of the control valve and the sealing portion 41: sealing portion of the control valve

42: jaw for fixing the sealing portion 47: O-ring

48, 49: first air passage 50, 51: second air passage

52: gradient surface for seating the air valve 53: groove

57: O-ring groove

The present invention relates to a panic booster for automobiles, each having two air valves in order to maximize the output of the booster in the panic braking state, and inserting a sealing member therebetween. The two air valves are separated to form first and second air passages, and during normal operation only the first air passage is opened and closed, and during panic operation, the second air passage is opened and closed to increase the flow area by the second air passage. The present invention relates to a panic booster for automobiles, which can increase air inflow and increase braking force, thereby improving performance.

As the technology of automobiles has developed rapidly, the speed of automobiles has gradually increased, and the weight of automobiles has gradually increased due to the increase of internal and external parts. As a result, not only mass and acceleration, which are major factors of the inertial force of automobiles, have increased, but also interest in safety while driving has increased.

As a result, various researches and developments have been made to improve the braking performance of automobiles, and as a result of these efforts, the recent rapid development is the booster of brake.

In general, a vehicle is provided with a braking device that serves to slow down or stop the vehicle speed during driving.

The braking device described above is largely based on a booster that doubles the pedaling force of the brake pedal by using a vacuum pressure (engine suction pressure) generated by engine power and a force doubled by the booster. Accordingly, it is composed of a master cylinder for forming brake oil hydraulic pressure in the brake circuit and a wheel cylinder for slowing or stopping the rotation speed of the wheel by the brake oil pressure.

Here, the booster may be a vacuum type using the negative pressure of the engine intake manifold and an air type using the pressure provided from a compressor driven by the engine, and a vacuum type is generally used in a small vehicle.

1 is a view schematically showing a vehicle panic booster according to the prior art, and FIG. 2 is a schematic cross-sectional view showing an enlarged power supply apparatus of a vehicle panic booster according to the prior art.

As shown in the drawing, the vehicle panic booster 100 according to the prior art is composed of a front housing 102 which is a vacuum chamber and a rear housing 103 which is an atmospheric pressure chamber, and the front housing 102 and the rear housing ( A control valve 130 for controlling the communication of vacuum or atmosphere to the 103 and a push rod for transmitting a response force applied to the air valve 160 and the power piston 140 and the brake pedal B / P 150) and the like.

Here, the front forward / transformer chamber and the rear forward / transformer chamber constituting the front and rear chambers 110 and 120 are partitioned by a front diaphragm and a rear diaphragm, and the front and rear diaphragms are supported by respective front and rear supports. It is.

In addition, the control valve 130 is coupled to the front diaphragm and the front support, the center plate and the rear diaphragm and the rear support at one end thereof, and the other end formed with the air suction portion communicates with the atmosphere through the center of the rear cell. . In addition, a positive pressure passage is formed between the front and rear constant pressure chambers and the front and rear transformer chambers, and a transformer passage is formed to communicate the atmosphere with the front and rear transformer chambers. In addition, an air valve 160 sliding in the axial direction with an end of the input shaft is installed in the control valve 130, one end of the air valve 160 and one end of the control valve 130 is output shaft It is in contact with the reaction disk 180 provided at the end.

Hereinafter, the operation of the brake booster 100 according to the prior art configured as described above will be briefly described.

First, in the rest state of the booster 100 before the driver presses the brake pedal, the control valve 130 comes into contact with the air valve 160. At this time, the control valve 130 and the power are controlled. A predetermined gap is formed between the pistons 140.

In this state, a negative pressure acts on the front chamber 110 from an intake manifold (not shown), and the negative pressure is transmitted to the rear chamber through a gap between the power piston 140 and the control valve 130. At this time, the front and rear chambers divided forward and backward by the center plate are in a negative pressure state, and the front and rear diaphragms are held at the stop position by the elasticity of the return spring.

In addition, when the driver presses the brake pedal, the booster 100 is in an Initial Apply state. At this time, the control valve 130 is pushed forward by a pressure spring (not shown), thereby providing an air valve piston 160. ) Is in close contact with the power piston 140 while maintaining the contact with the power supply, and the vacuum negative pressure applied to the rear chamber is short-circuited. At this time, when the push rod 150 moves forward slightly to move the air valve piston 160 forward, a slight gap is generated between the power piston 140 and the air valve piston 160 to boost the booster 100. Reaches a partial braking state.

Accordingly, the negative pressure acts on the front chamber and the atmospheric pressure acts on the rear chamber, but the pressure difference between the front chamber, which is the vacuum chamber, and the rear chamber, which is the atmospheric chamber, is not large, so that the diaphragm is slightly pushed toward the front chamber and gradually compresses the return spring. At this time, the rod piston is advanced as much as the return spring is compressed to apply a braking force to the master cylinder.

In addition, when the push rod 150 is pushed in such that the air valve piston 160 is in contact with the rod piston, the air valve piston 160 is completely removed from the control valve 130 keeping in close contact with the power piston 140. It will fall off and become a full braking state. At this time, the front chamber, which is a vacuum chamber, is kept closed in a negative pressure state, and the rear chamber, which is an atmospheric pressure chamber, is completely opened and becomes an atmospheric pressure state, so the pressure difference between the front and rear chambers is maximum. As a result, the front and rear diaphragms are advanced as far forward as possible and the return spring is completely compressed. In the above process, the driver's brake pedal input is boosted, and when the brake pedal is further depressed, the driver's input is directly acted on the master cylinder by the push rod 150.

As a result, the force generated by the pressure difference acts in the direction from the larger side to the smaller side, and the control valve 130 interlocked with the front and rear diaphragms and the power piston 140 is a force generated by the pressure difference. The reaction disk 180 is pushed through the center of the control valve 130 by being moved toward the front and rear constant pressure chambers.

 At this time, the reaction disk 180 acts by the force applied from the plunger tip and the force applied from the control valve 130. In this case, the power ratio generated by the driver and the pressure difference applied by the driver results in a ratio of the center area of the output shaft that is in contact with the area ratio of the tip of the reaction disk 180.

However, when the driver's stepping force on the brake pedal (B / P) is more than a certain level, the additional power is lost, and the stepping force of the brake pedal (B / P) is transmitted as it is. Is generated.

However, the conventional booster 100 may not have enough output compared to the driver's brake pedal (B / P) input in a panic braking situation requiring emergency braking, and thus the braking force may be insufficient, resulting in a long braking distance and an accident. There was a problem that could be followed.

The present invention has been made in order to solve the above problems, in order to maximize the output of the booster in the panic braking (panic braking) each provided with two air valves, between the sealing member is inserted, the panic breaking state In this case, the two air valves are separated to form first and second air passages therebetween, and during normal operation, only the first air passage is opened and closed, and during panic operation, the second air passage is opened and closed to flow as much as the second air passage. It is an object of the present invention to provide a panic booster for automobiles that can increase in area, thereby increasing air inflow and increasing braking force to improve performance.

In order to achieve the above object, the present invention, a push rod for transmitting an input in conjunction with the brake pedal (B / P), and a power piston protrusion formed on a predetermined position on the outer circumferential surface to receive the input to the advance of the push rod In a panic booster for a vehicle provided with a reaction disk disposed at a central portion of a power piston, one end thereof is in contact with the reaction disk, the push rod is in contact with the other inner diameter portion, and the clip is stepped at a predetermined position centered on an outer circumferential surface thereof. A second air valve having a protruding portion for protruding, a fixing caulking portion recessed in a circumferential direction to be fixed and supported by the push rod, and having a protruding portion having a tapered shape at an outer predetermined position; A first air valve formed to contact the tapered shape of the second air valve and having an air valve protrusion protruding a predetermined height on one outer circumferential surface; A clip provided to maintain a constant step of the power piston protrusion and the air valve protrusion; A control valve provided for contacting and sealing the power piston and the air valve protrusion, the control valve comprising a support provided to support a control valve spring and an air valve spring; A first air passage between the first air valve and the control valve; And a second air passage formed between the first air valve and the second air valve. By including the, characterized in that for increasing the air inflow amount into the booster through the first air passage and the second air passage.

A groove having a predetermined depth is formed on the tapered surface of the protrusion formed on the second air valve, and the groove is provided with an O-ring.

The power piston may include a first air valve support part supporting the first air valve and a second air valve support part supporting the second air valve.

And a dish spring provided at one end of the second air valve to closely contact the first air valve and the second air valve, wherein the dish spring has an air passage of the dish spring with a predetermined diameter at the center thereof. It has a, characterized in that to form a dish-type spring fixing jaw at one end of the second air valve so that the dish-type spring is fixed.

In addition, a groove having a predetermined depth is formed on the tapered surface of the protrusion formed on the second air valve, and the groove is provided with a lip seal.

In addition, a control valve hole is formed through the control valve, and at least one or more control valve holes may be formed.

In addition, an inner lip seal is formed inside the control valve to prevent leakage to the vacuum chamber when atmospheric pressure acts from the outside, and an outer lip seal is formed on the outside of the control valve to prevent leakage to the vacuum chamber when atmospheric pressure acts inside. Characterized in that.

The groove is formed on the lip seal of the control valve to maintain the airtightness of the support and the power piston, and the groove is provided with a sealing member.

In addition, the control valve is characterized in that the outer lip seal of the lip seal shape and the sealing member integral control valve formed integrally with the sealing member formed on the outside.

In another embodiment, a reaction is provided in the center of one end of a power rod having a push rod that is connected to a brake pedal B / P and transmits an input, and a power piston protrusion is formed at a predetermined position on an outer circumferential surface of the push rod to receive an input forward of the push rod. In the panic booster for cars provided to be in contact with the disc, one end portion is in contact with the reaction disk, the push rod is in contact with the other inner diameter portion, the projecting portion for the clip support is formed to be stepped at a predetermined position centered on the outer peripheral surface, A second air valve having a fixing caulking portion recessed in a circumferential direction to be fixed and supported by the push rod, and having a protrusion having a tapered air valve seating gradient surface at an outer predetermined position; A first air valve having a first air valve gradient surface to be in contact with a gradient surface of the second air valve, and having an air valve protrusion formed on one outer circumferential surface to protrude a predetermined height; A clip provided to maintain a constant step of the power piston protrusion and the air valve protrusion; A control valve provided for contacting and sealing the power piston and the air valve protrusion, the control valve including a control valve spring and a support for supporting the air valve spring; A first air passage between the first air valve and the control valve; And a second air passage formed between the first air valve and the second air valve, thereby increasing the amount of air introduced into the booster through the first air passage and the second air passage. It is characterized by.

A groove having a predetermined depth is formed on the tapered shape of the air valve seating gradient surface of the protrusion formed on the second air valve, and the groove is provided with an O-ring or a lip seal.

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

3 is a view schematically showing a car panic booster according to the present invention, FIG. 4 is a cross-sectional view schematically showing an enlarged power supply apparatus of the car panic booster according to the present invention, and FIG. 5 is a view of the car panic booster according to the present invention. 6 is a view schematically showing a normal operating state, FIG. 6 is a view schematically showing a panic operation state of an automobile panic booster according to the present invention, and FIG. 7 is an enlarged power boosting device of a car panic booster according to an embodiment of the present invention. 8 is a cross-sectional view schematically showing an enlarged power supply apparatus of a panic booster for a vehicle according to another embodiment of the present invention.

As shown in the figure, the vehicle panic booster 1 according to the present invention is a power piston 13 in which a front housing 2, a rear housing 3, a push rod 12, and a power piston protrusion 34 are formed. ), The reaction disk 42, the clip 14, the first and second air valves 24 and 25, the control valve 20, and the first and second air passages 48 and 50.

The control valve 20 and the first and second air valves 24 and 25 for controlling the communication between the vacuum or the atmosphere to the front housing 2 as the vacuum chamber and the rear housing 3 as the atmospheric pressure chamber are air. Adjust the inflow rate.

A power rod 13 in which a push rod 12 is connected to the brake pedal B / P and transmits an input, and a power piston protrusion 34 is formed at a predetermined position on an outer circumferential surface of the push rod 12 to receive an input forward. The reaction disk 42 is placed at the center of one end of the.

And, the second air valve 25 is fixed to the staking adjacent to the push rod 12, one outer peripheral surface is in contact with the reaction disk 42, the projection for supporting the clip stepped at the predetermined position center of the outer peripheral surface ( 33 is formed to protrude, and a fixing caulking portion 32 recessed in a circumferential direction is formed so that the push rod 12 is fixed and supported, and a protrusion 25 'having a tapered shape at an outer predetermined position is formed. Is formed.

In addition, the first air valve 24 is formed in contact with the tapered shape of the second air valve 25, and has an air valve protrusion 35 protruding a predetermined height on one outer peripheral surface.

Here, the step between the power piston protrusion 34 and the air valve protrusion 35 is kept constant through the clip 14.

In addition, the control valve 20 is provided for contacting and sealing the power piston 13 and the air valve protrusion 35, and is provided to support the control valve spring 19 and the air valve spring 18. It is comprised including the support 16.

Accordingly, a first air passage 48 between the first air valve 24 and the control valve 20 is provided, and a second air valve 24 between the first air valve 24 and the second air valve 25 is provided. The air passage 50 is formed, so that the first air passage 48 is opened and closed during normal operation, and the air inflow amount into the booster 1 through the second air passage 50 during the panic operation. The output can be increased by increasing.

In addition, during panic bracking, since the second air passage 50 for increasing the air inflow rate must be kept airtight under normal operating conditions, the protrusion 25 'formed on the second air valve 25 A groove 26 having a predetermined depth is formed on the tapered surface, and an o-ring 27 is provided and assembled in the groove 26 to maintain the airtight of the second air passage 50.

Here, the lip seal 30 may be provided in the groove 26 having a predetermined depth formed on the tapered surface of the protrusion 25 ′ formed in the second air valve 25.

In addition, the plate-shaped spring 36 for closely contacting the first air valve 24 and the second air valve 25 with the O-ring 27 or the lip seal 30 provided to maintain the airtightness therebetween. One end of the second valve 25 is provided.

In addition, the dish-shaped spring 36 is formed in the center of the dish-shaped spring air passage 37 with a predetermined diameter, and at one end of the second air valve 25 so that the dish-shaped spring 36 is fixed. The dish-shaped spring fixing jaw 38 protrudes.

In addition, the power piston 13 is provided with a first air valve support part 28, and during the panic operation of the booster 1, the stroke of the first air valve 24 is limited to a predetermined level, and the 2 allows the second air passage 50 of the air valve 25 to be opened and ensures concentricity of the first air valve 24.

In addition, the power piston 13 is provided with a second air valve support 29 to maintain the pedal stroke in the runout after the booster operating limit at a normal or panic operation of the booster 1. To ensure concentricity of the second air valve 25 during operation.

The control valve 20 is provided for contacting and sealing the power piston 13 and the air valve protrusion 35, and is provided to support the control valve spring 19 and the air valve spring 18. It is comprised including the support 16.

Here, the control valve 20 is formed with a control valve hole 31 penetrated between the power piston contact portion and the air valve contact portion, and during operation, atmospheric pressure acts inside the control valve 20 to control the control valve. 20 is in close contact with the power piston protrusion 34 to improve airtightness and to return to vacuum upon release.

In addition, at least one or more control valve holes 31 formed in the control valve 20 may be formed.

In addition, under the condition that the booster 1 does not operate, a lip seal shape inner lip seal 22 is formed inside the control valve 20 so that a vacuum pressure acts on the inside of the control valve 20 and the booster is activated. When atmospheric pressure is applied to the outside of (1), leakage to the vacuum chamber can be prevented.

In operation conditions of the booster 1, a vacuum pressure is applied to the booster 1, and an outer lip seal 23 is formed outside the control valve 20 to operate the atmospheric pressure in the vacuum chamber. To prevent leakage.

In addition, a groove 57 is formed on the outer circumferential surface of the support 16, and a sealing member 17 is provided on the groove 57 to maintain the airtightness of the support 16 and the power piston 13.

Here, the control valve 20 can be formed as a sealing unit integrated control valve 39 formed integrally with the outer lip seal 23 and the sealing member 17 on the outside.

Hereinafter, the operation of the vehicle panic booster 1 according to the present embodiment will be described.

The automobile panic booster 1 rapidly and rapidly advances the second air valve 25 in which the push rod 12 is staking adjacent thereto during rapid braking, and maintains a constant step through the clip 14. The variable piston inside the booster 1 is converted into vacuum and atmosphere by the power piston 13 having the power piston protrusion 34 and the air valve protrusion 35.

In the normal operation of the panic booster 1, the grooves 26 are formed and the airtight O-rings are formed so that the tapered surfaces of the first and second air valves 24 and 25 remain airtight and are not separated. 27) and the lip seal 30, and the dish-shaped spring 37 is provided, the air is introduced through only the first air passage (28).

However, in the panic braking situation of the panic booster 1, the first air passage 28 and the second air passage 50 are separated while the first and second air valves 24 and 25 are separated. It is formed to increase the area of the flow passage as much as the second air passage 50, and thus the inflow of air is increased to increase the braking force.

9 is a sectional view schematically showing an enlarged power supply apparatus of a vehicle panic booster according to another embodiment of the present invention, and FIG. 10 is a schematic enlarged view of an operating state of a vehicle panic booster according to an embodiment of the present invention. It is a cross section.

As shown in the figure, the vehicle panic booster 1 according to another embodiment of the present invention is formed with a front housing 2, a rear housing 3, a push rod 12, a power piston protrusion 34 Power piston 13, reaction disk 42, clip 14, first and second air valves 43 and 44, control valve 20, and first and second air passages 49 and 51, etc. It consists of.

The control valve 20 and the first and second air valves 43 and 44 which control the communication between the vacuum or the atmosphere to the front housing 2 as the vacuum chamber and the rear housing 3 as the atmospheric pressure chamber are air. Adjust the inflow rate.

A power rod 13 in which a push rod 12 is connected to the brake pedal B / P and transmits an input, and a power piston protrusion 34 is formed at a predetermined position on an outer circumferential surface of the push rod 12 to receive an input forward. The reaction disk 42 is disposed at the center of one end of the backplane.

In addition, one end portion is in contact with the reaction disk 42, the push rod 12 is in contact with the other inner diameter portion, the clip support protrusion 33 is projected to be stepped at a predetermined position centered on the outer peripheral surface, the push rod ( A fixing caulking portion 32 recessed a predetermined depth in the circumferential direction so that 12 is fixed and supported, and a protrusion 44 'having a tapered air valve seating gradient surface 52 having a stepped shape at an outer predetermined position. Is formed.

In addition, the first air valve 43 has a first air valve gradient surface 43 'to be in contact with the gradient surface 52 of the second air valve 44, and is formed to protrude a predetermined height on one outer peripheral surface.

Here, the step between the power piston protrusion 34 and the air valve protrusion 35 is kept constant through the clip 14.

In addition, the power piston 13 is provided with a first air valve support part 28 to limit the stroke of the first air valve 43 to a predetermined level during the panic operation of the booster 1, The second air passage 51 of the second air valve 44 can be opened, and concentricity of the first air valve 43 is ensured.

In addition, the power piston 13 is provided with a second air valve support 29 to maintain the pedal stroke in the runout after the booster operating limit at a normal or panic operation of the booster 1. To ensure concentricity of the second air valve 44 during operation.

In addition, the control valve 20 is provided for contacting and sealing the power piston 13 and the air valve protrusion 35, and is provided to support the control valve spring 19 and the air valve spring 18. It is comprised including the support 16.

Accordingly, a first air passage 49 is provided between the first air valve 43 and the control valve 20, and a second air path between the first air valve 43 and the second air valve 44 is provided. As the air passage 51 is formed, the first air valve 43 is operated in the normal operation to open and close the first air passage 49, and the first and second air valves 24 in the panic operation. As 25) is separated, the area of the flow passage as much as the second air passage 50 is increased and thus the inflow of air is increased to increase the braking force.

In addition, since the second air passage 51 for increasing the air inflow rate during panic bracking must be kept airtight under normal operating conditions, the taper of the protrusion 44 'formed in the second air valve 44 is maintained. A groove 53 having a predetermined depth is formed on the gradient surface 52, and the O-ring 27 is provided and assembled to the groove 53 to maintain the airtightness of the second air passage 51.

Here, the lip seal 30 may be provided in the groove 53 formed on the gradient surface 52 outside the protrusion 44 ′ formed on the second air valve 44.

In addition, the oval ring 27 or the lip seal 30 for maintaining the airtight, and the dish-shaped spring 36 for the close contact between the first air valve 43 and the second air valve 44 is made of the first It is provided in the one end of the 2 air valve 44.

In addition, the dish-shaped spring 36 is formed in the center of the dish-shaped spring air passage 37 with a predetermined diameter, one side end of the second air valve 44 so that the dish-shaped spring 36 is fixed A dish spring fixing jaw 54 is formed.

In addition, the control valve 20 is provided for contacting and sealing the power piston 13 and the air valve protrusion 35, and is provided to support the control valve spring 19 and the air valve spring 18. It is comprised including the support 16.

Here, the control valve 20 is formed with a control valve hole 31, during operation atmospheric pressure acts on the inside of the control valve 20 to close the control valve 20 to the power piston protrusion 34. To improve airtightness and to return to vacuum upon termination.

In addition, the control valve hole 31 formed in the control valve 20 may be formed in at least one or more.

In addition, under the condition that the booster 1 does not operate, a lip seal shape inner lip seal 22 is formed inside the control valve 20 so that a vacuum pressure acts on the inside of the control valve 20 and the booster is activated. When atmospheric pressure is applied to the outside of (1), leakage to the vacuum chamber can be prevented.

In operation conditions of the booster 1, a vacuum pressure is applied to the booster 1, and an outer lip seal 23 is formed outside the control valve 20 to operate the atmospheric pressure in the vacuum chamber. To prevent leakage.

In addition, an O-ring groove 57 is formed in the control valve 20, and a sealing member 17 is provided in the O-ring groove 57 to provide airtightness of the support 16 and the power piston 13. Keep it.

Here, the control valve 20 can be formed as a sealing unit integrated control valve 39 formed integrally with the outer lip seal 23 and the sealing member 17 on the outside.

As described above, the present invention having the configuration as described above is provided with two air valves, respectively, in order to maximize the output of the booster in the panic braking state, and inserts a sealing member therebetween, thereby operating normally. Under normal conditions, the two air valves can be separated in the panic braking state, forming a second air passage therebetween, increasing the inflow of air to increase braking force and improve performance. have.

In the above described exemplary embodiments of the present invention by way of example, the scope of the present invention is not limited only to these specific embodiments, those skilled in the art is appropriate within the scope described in the claims of the present invention. Will be possible.

Claims (28)

A power rod 13 in which a push rod 12 is connected to the brake pedal B / P and transmits an input, and a power piston protrusion 34 is formed at a predetermined position on an outer circumferential surface of the push rod 12 to receive an input forward. In the vehicle panic booster (1) which is provided so that the reaction disk (42) is placed in contact with the center of one end, One end portion is in contact with the reaction disk 42, the push rod 12 is in contact with the other inner diameter portion, the clip support protrusion 33 is projected to be stepped at a predetermined position centered on the outer peripheral surface, the push rod 12 A second air valve 25 in which a fixing caulking portion 32 recessed in a circumferential direction is formed in a circumferential direction such that the fixing and supporting are fixed, and a protrusion 25 'having a tapered shape is formed at an outer predetermined position; A first air valve 24 formed to contact the tapered shape of the second air valve 25 and having an air valve protrusion 35 protruding a predetermined height on one outer circumferential surface thereof; A clip (14) provided to maintain a constant step between the power piston protrusion (34) and the air valve protrusion (35); It is provided for contacting and sealing the power piston 13 and the air valve protrusion 35, the support 16 for supporting the control valve spring 19 and the air valve spring 18, the power piston 13 A control valve 20 including a sealing member 17 for sealing between the support 16 and the control valve, comprising a control valve through hole 31, an inner lip seal 22, and an outer lip seal 23; A first air passage (48) between the first air valve (24) and the control valve (20); And A second air passage (50) formed between the first air valve (24) and the second air valve (25); By including, the vehicle panic booster, characterized in that to increase the air inflow into the booster (1) through the first air passage (48) and the second air passage (50). The method of claim 1, A panic for an automobile, characterized in that a groove 26 having a predetermined depth is formed on the tapered surface of the protrusion 25 ′ formed in the second air valve 25, and the groove 26 is provided with an o-ring 27. booster. Claim 3 was abandoned when the setup registration fee was paid. The method of claim 1, The panic booster for a vehicle, which is provided in the power piston (13) and has a first air valve support (28) for supporting the first air valve (24). Claim 4 was abandoned when the registration fee was paid. The method of claim 1, The panic booster for a vehicle, which is provided in the power piston (13) and has a second air valve support (29) for supporting the second air valve (25). Claim 5 was abandoned upon payment of a set-up fee. The method of claim 1, The panic booster for automobiles, comprising a dish-shaped spring (36) at one end of the second air valve (25) to bring the first air valve (24) and the second air valve (25) into close contact. Claim 6 was abandoned when the registration fee was paid. The method of claim 5, The pan-shaped spring 36 is a panic booster for a vehicle, characterized in that it has a plate-shaped spring air passage (37) at a predetermined diameter in the center. Claim 7 was abandoned upon payment of a set-up fee. The method of claim 5, The panic booster for automobiles, characterized in that the dish-type spring fixing jaw (38) is formed at one end of the second air valve (25) so that the dish-type spring (36) is fixed. Claim 8 was abandoned when the registration fee was paid. An automobile, characterized in that a groove 26 having a predetermined depth is formed on the tapered surface of the protrusion 25 ′ formed in the second air valve 25, and the lip seal 30 is provided in the groove 26. Dragon Panic Booster. Claim 9 was abandoned upon payment of a set-up fee. The method of claim 1, Panic booster for cars, characterized in that the control valve hole 31 is penetrated through the control valve (20). Claim 10 was abandoned upon payment of a setup registration fee. The method of claim 9, The control valve hole 31 formed in the control valve 20 is at least one car panic booster, characterized in that formed in plural. Claim 11 was abandoned upon payment of a setup registration fee. The method of claim 1, The inner lip seal 22 is formed inside the control valve 20 to prevent leakage to the vacuum chamber when the atmospheric pressure from the outside, characterized in that the vehicle panic booster. Claim 12 was abandoned upon payment of a registration fee. The method of claim 1, An outer lip seal (23) is formed on the outside of the control valve (20) to prevent leakage to the vacuum chamber when atmospheric pressure acts inside the car panic booster. Claim 13 was abandoned upon payment of a registration fee. The method of claim 1, A groove 57 is formed on the lip seal 30 of the control valve 20 to maintain the airtightness of the support 16 and the power piston 13, and the groove 57 is provided with a sealing member 17. Car panic booster, characterized in that. Claim 14 was abandoned when the registration fee was paid. The method of claim 1, The control valve (20) is a panic booster for automobiles, characterized in that the outer lip seal (23) and the sealing member integrated control valve (39) formed integrally formed on the outside. Claim 15 was abandoned upon payment of a registration fee. A power rod 13 in which a push rod 12 is connected to the brake pedal B / P and transmits an input, and a power piston protrusion 34 is formed at a predetermined position on an outer circumferential surface of the push rod 12 to receive an input forward. In the vehicle panic booster (1) which is provided so that the reaction disk (42) is placed in contact with the center of one end, One end portion is in contact with the reaction disk 42, the push rod 12 is in contact with the other inner diameter portion, the clip support protrusion 33 is projected to be stepped at a predetermined position centered on the outer peripheral surface, the push rod 12 Fixing caulking portion 32 recessed a predetermined depth in the circumferential direction so as to be fixed and supported, and a protrusion 44 'having a tapered air valve seating gradient surface 52 having a stepped shape at an outer predetermined position is formed. Second air valve 44; A first air valve having a first air valve gradient surface 45 'to be in contact with the gradient surface 52 of the second air valve 44, and having an air valve protrusion 35 protruding a predetermined height on one outer peripheral surface thereof; 43); A clip (14) provided to maintain a constant step between the power piston protrusion (34) and the air valve protrusion (35); It is provided for contacting and sealing the power piston 13 and the air valve protrusion 35, the support 16 for supporting the control valve spring 19 and the air valve spring 18, the power piston 13 A control valve 20 including a sealing member 17 for sealing between the support 16 and a control valve through hole 31, an inner lip seal 22, and an outer lip seal 27; A first air passage (49) between the first air valve (43) and the control valve (20); And A second air passage (51) formed between the first air valve (43) and the second air valve (44); A dish-shaped spring (36) for bringing the first air valve (43) into close contact with the second air valve (44); By including, the vehicle panic booster, characterized in that to increase the air inflow into the booster (1) through the first air passage (49) and the second air passage (51). Claim 16 was abandoned upon payment of a setup registration fee. The method of claim 15, A groove 53 having a predetermined depth is formed on the tapered shape of the air valve seating gradient surface 52 of the protrusion 44 ′ formed on the second air valve 44, and an o-ring 47 is formed on the groove 53. Panic booster for cars characterized in that it comprises a). Claim 17 was abandoned upon payment of a registration fee. The method of claim 15, The panic booster for a vehicle, which is provided in the power piston (13) and has a first air valve support part (45) for supporting the first air valve (43). Claim 18 was abandoned upon payment of a set-up fee. The method of claim 15, The panic booster for a vehicle, which is provided in the power piston (13) and has a second air valve support (46) for supporting the second air valve (44). Claim 19 was abandoned upon payment of a registration fee. The method of claim 15, The panic booster for automobiles provided with a dish-type spring (36) at one end of the second air valve (44) to bring the first air valve (43) and the second air valve (44) into close contact. Claim 20 was abandoned upon payment of a registration fee. The method of claim 19, The pan-shaped spring (36) is a panic booster for a vehicle, characterized in that it has an air passage (37) of the dish-shaped spring at a predetermined diameter in the center. Claim 21 was abandoned upon payment of a registration fee. The method of claim 20, The panic booster for automobiles, characterized in that the dish-type spring fixing jaw (54) is formed at one end of the second air valve (44) so that the dish-type spring (36) is fixed. Claim 22 was abandoned upon payment of a registration fee. The method of claim 15, A groove 53 having a predetermined depth is formed on the tapered shape of the air valve seating slope 52 of the protrusion 44 ′ formed on the second air valve 44, and a lip seal 55 is formed on the groove 53. Panic booster for cars characterized in that it comprises a). Claim 23 was abandoned upon payment of a set-up fee. The method of claim 15, Panic booster for cars, characterized in that the control valve hole 31 is penetrated through the control valve (20). Claim 24 was abandoned when the setup registration fee was paid. The method of claim 23, wherein The control valve hole 31 formed in the control valve 20 is at least one car panic booster, characterized in that formed in plural. Claim 25 was abandoned upon payment of a registration fee. The method of claim 15, The inner lip seal 22 is formed inside the control valve 20 to prevent leakage to the vacuum chamber when the atmospheric pressure from the outside, characterized in that the vehicle panic booster. Claim 26 was abandoned upon payment of a registration fee. The method of claim 15, An outer lip seal (23) is formed on the outside of the control valve (20) to prevent leakage to the vacuum chamber when atmospheric pressure acts inside the car panic booster. Claim 27 was abandoned upon payment of a registration fee. The method of claim 15, In order to maintain the airtightness of the support 16 and the power piston 13, an o-ring groove 57 is formed on the outer circumferential surface of the support 16, and the o-ring groove 57 is provided with a sealing member 17. Car panic booster, characterized in that. Claim 28 was abandoned upon payment of a registration fee. The method of claim 15, The control valve (20) is a panic booster for automobiles, characterized in that the outer lip seal (23) and the sealing member integrated control valve (39) formed integrally formed on the outside.

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