WO2018074741A2

WO2018074741A2 - Air compressor, control device thereof, and automobile shock absorber system using same air compressor and control device

Info

Publication number: WO2018074741A2
Application number: PCT/KR2017/010142
Authority: WO
Inventors: 고재원
Original assignee: 고재원
Priority date: 2016-10-18
Filing date: 2017-09-15
Publication date: 2018-04-26
Also published as: WO2018074741A3

Abstract

The present invention relates to an air compressor, a control device thereof, and an automobile shock absorber system using the same air compressor and control device, wherein a reciprocating air compressor, an exhaust actuator, and a pneumatic sensor are connected to one another through a connection block and are provided on one substrate to minimize the volume thereof, whereby air can be compressed at a high torque in light of the reciprocating characteristics to quickly provide an air pressure thus obviating need for a separated air storage chamber, and can be discharged, if necessary, by detecting a pressure. To this end, the present invention comprises: a reciprocating air compressor including a driving means and a cylinder block; a connection block coupled to the cylinder block and having an air inlet and outlet for supplying and discharging the compressed air to and from an object; a pneumatic sensor means horizontally connected to the connection block to sense an air pressure; and an exhaust actuator means vertically connected to the connection block to exhaust the air pressure.

Description

Air compressor, its control device and automobile shock absorber system using it

The present invention relates to an air compressor, a control device thereof, and an automobile shock absorber system using the same. More specifically, the reciprocating air compressor, an exhaust actuator, and a pneumatic sensor are combined with a connection block and provided on one substrate to minimize volume. By detecting the air pressure and supplying and discharging, the air compressor and its adjusting device, which can be installed separately on the front and rear wheels of the car and can independently control the air suspension provided for each wheel, and the shock absorber for the car using the same It's about the system.

In general, air compressors include a reciprocating type by a reciprocating motion of a piston, a rotary type by a rotation of a rotor, and a centrifugal type and a rotary type using a centrifugal force of a vane that rotates at high speed. In the reciprocating type, the air is compressed while the piston reciprocates at a high speed inside the cylinder, and the compressed air is stored in a pressure vessel.

Recently, a device has been developed that provides an air tube in a shock absorber of a vehicle to mitigate a shock while driving with a spring. It is a configuration that the air tube is mounted on each wheel, and supplies compressed air stored in one pressure vessel to each air tube. However, the air compressor and the pressure vessel consist of one, occupy a large volume, and pressure resistance must be ensured in the process of connecting the pressure vessel and each air tube to the pipe, and there is a problem such that pressure loss occurs due to the length of the pipe.

In view of this, Japanese Patent Application Laid-Open No. H7-167189 has proposed a technique that solves the problem caused by connecting each shock absorber to a conventional air compressor by installing a piezo actuator pump for each shock absorber of each wheel.

However, the conventional Japanese patent has a limitation in supplying compressed air quickly because it cannot generate a high torque due to the characteristics of the piezo. Therefore, the air storage chamber must be separately prepared for each shock absorber to store the compressed air generated from the piezo actuator pump, and there is still a limit in reducing the volume.

The present invention was developed in view of the conventional problems, and an object of the present invention is to combine the reciprocating air compressor, the exhaust actuator and the pneumatic sensor as a connection block, and to provide a single substrate to minimize the volume, thereby high Since it is possible to provide air pressure quickly by compressing air with torque, there is no need to provide a separate air storage chamber, and also to provide an air compressor and a pneumatic control device capable of detecting a pressure and exhausting it if necessary.

Another object of the present invention is to detect the air pressure by using the pneumatic control device, so that it can be supplied and discharged separately installed on the front and rear wheels of the vehicle, the air compressor that can independently control the air suspension provided for each wheel And to provide a control device and the shock absorber system for automobiles using the same.

To this end, the present invention is a reciprocating air compressor consisting of a drive means and a cylinder block; A connection block coupled to the cylinder block and having a supply / exhaust mechanism for supplying or discharging compressed air to an object; Pneumatic sensor means for horizontally connected to the connecting block for detecting the pneumatic pressure; And it is characterized in that the exhaust actuator means connected to the connection block vertically to discharge the pneumatic.

According to the present invention, since a high-speed motor and a reciprocating air compressor generating high torque at a large reduction ratio are used, the necessary air pressure can be immediately supplied, so that a separate air storage chamber is unnecessary. In addition, since the air compressor, the exhaust actuator, and the pneumatic sensor are installed in the substrate by being combined into one connection block, the volume is minimized.

In addition, the air pressure can be sensed to supply and exhaust air, so it is installed at each shock absorber of the front wheel and the rear wheel of the car to individually control the air tube provided in the shock absorber. There is an advantage such as to reduce.

1 is an assembled perspective view of an air compressor and an adjusting device according to one embodiment of the present invention;

Figure 2 is a partial cross-sectional perspective view of the air compressor and the adjusting device of an embodiment of the present invention

Figure 3 is an exploded perspective view of the air compressor and the adjusting device of an embodiment of the present invention

Figure 4 is a plan view of the air compressor and the adjusting device of an embodiment of the present invention

Figure 5 is an exploded perspective view of the drive means of the air compressor of one embodiment of the present invention

Figure 6 is an assembled perspective view of the drive means of the air compressor of one embodiment of the present invention

Figure 7 is an exploded perspective view of the cylinder block of the air compressor of one embodiment of the present invention

Figure 8 is an assembled perspective view of the cylinder block of the air compressor of one embodiment of the present invention

9 is a cross-sectional view of the cylinder block of the air compressor of one embodiment of the present invention;

10 is an exploded perspective view of the pneumatic sensor and the exhaust actuator of the pneumatic control device of an embodiment of the present invention

11 is a partial perspective view of the check valve of the pneumatic regulating device of one embodiment of the present invention

12 is a partial perspective view of the exhaust actuator of the pneumatic control device of an embodiment of the present invention

Figure 13 is an assembled cross-sectional view of the air compressor and the adjusting device of an embodiment of the present invention.

14 is an assembled side cross-sectional view of the air compressor and the adjusting device according to one embodiment of the present invention.

15 is a cross-sectional view of the check valve of the pneumatic control device of an embodiment of the present invention

16 is a perspective view of a vehicle to which the air compressor and the adjusting device according to an embodiment of the present invention are applied.

17 is an opening view of the shock absorber to which the air compressor and the adjusting device of the embodiment of the present invention are applied.

18 is a partially enlarged view of the shock absorber to which the air compressor and the adjusting device according to the embodiment of the present invention are applied.

1 to 4, the air compressor and the adjusting device according to the embodiment of the present invention are provided with a driving means 100 and a cylinder block 101 constituting the air compressor, and a connection block 300 coupled with the cylinder block 101. ) Is provided. The connection block 300 is provided with a supply and exhaust mechanism 305, the exhaust actuator means 500 and the pneumatic sensor means 400 is coupled.

The driving means 100, the cylinder block 101, and the connection block 300 are mounted on one substrate 600 and are covered with a cover 601 and protected. In addition, the cover 601 is provided with a vent 602, the substrate 600 is provided with a filter unit 603 corresponding to the vent hole 602, the external air in the filter unit 603 while the air compressor is operating Filtered out.

5 to 9 show an air compressor according to an embodiment of the present invention, and includes a driving means 100 and a cylinder block 101. The driving means 100 includes a motor 102 on a motor bracket 103 mounted on a substrate 600, and a worm gear 106 inside a gearbox 105 mounted on the substrate 600. The worm gear 106 and the motor 102 are connected via a coupling 104, and a worm wheel 107 orthogonal to the worm gear 106 is provided in the worm gear box 105, and the gears are formed through the bearing 111. The box 105 is rotatably provided.

In addition, a cylindrical cam 110 is provided at the end of the worm wheel 107 through an eccentric cam lever 108 and a cam shaft 109. The motor 102 is a DC12V geared motor, with a reduction ratio of 1/4. In addition, since a total reduction of 1/400 is achieved by a 1/10 second reduction in the worm gear 106, a large torque force may be generated in a small motor. The motor 102 is a small motor of 6200 rpm, and a sufficient pneumatic pressure of 600 psi is generated because the reduction ratio is 1/400.

The cylinder block 101 has a "a" shape, one side of the guide chamber 113 and the cylinder chamber 112 is formed in two stages, the other side is provided with a check valve chamber 114 to communicate with each other. The front end of the guide shaft 116 and the piston rod 115 is fitted into the guide chamber 113 and the cylinder chamber 112, and the rear ends of the guide shaft 116 and the piston rod 115 are cam guides 117. To be combined. The cam guide 117 is vertically drilled with a long hole so that the cam 110 of the driving means 100 is fitted. The cam guide 117 is reciprocated left and right while the cam 110 is reciprocated up and down. .

The piston rod 115 is provided with a piston 118 is inserted into the cylinder chamber 112 and reciprocated, the outer peripheral surface of the piston 118 is provided with a piston ring 119 while the piston 118 is reciprocated The airtightness inside the cylinder chamber 112 is maintained. In addition, the piston rod 115 has a hollow shape and is provided with a suction passage 120 therein, and a back flow intermittently connecting the suction passage 120 and the cylinder chamber 112 to the inside of the piston 118. The prevention hole 122 is provided, and a suction hole 121 communicating with the suction passage 120 is drilled at the rear end of the piston rod 115.

In addition, a cutout 123 is formed on an outer circumferential surface of the backflow prevention device 122, and the backflow prevention device 122 falls off from the suction passage 120 when the piston 118 reverses, and at this time, the suction hole 121 and the suction passage. External air flows into the cylinder chamber 112 through the 120 and the cutout 123, and the inside of the cylinder chamber 112 is compressed when the backflow prevention hole 122 blocks the suction hole 121 during the electric transfer. In addition, the inside of the piston 118 is provided with a stopper 124 in the form of a ring for limiting the movement distance of the backflow prevention hole 122.

10 to 14 show the configuration of the pneumatic sensor and the exhaust actuator of the pneumatic control device of an embodiment of the present invention, the connection block 300 is coupled to the cylinder block 101 in the check valve chamber 304 Passage passage 301 is provided, and the supply and discharge mechanism 305 is provided at the end of the passage (301). The pneumatic sensor means 400 is provided through the sensor passage 302 in a horizontal direction perpendicular to the passage 301.

The pneumatic sensor means 400 is provided with a sensor body 401 having a sensor chamber 402 in a cylindrical hollow shape, the sensor chamber 402 is a hollow sensor cover 403 in the open state It is coupled to the sensor body 401. The sensor chamber 402 is provided with a cylindrical movable portion 404 that is reciprocated, and a spring 405 is provided between the movable portion 404 and the sensor cover 403. In addition, a primary coil part 406 is provided on an outer circumferential surface of the sensor body 401, and a secondary coil part 407 is provided on an outer circumferential surface of the movable part 404. When the distance between the primary coil part 406 and the secondary coil part 407 is changed while the movable part 404 is reciprocated according to the change in the air pressure, the induced current value is changed. It can be detected.

An upper side of the connection block 300 is provided with an exhaust passage 303 and a check valve chamber 304 in a vertical direction with the passage 301, the check valve chamber 304 is provided with a check valve 200 do. The open upper end of the check valve chamber 304 is sealed with a cover plate 306.

The exhaust actuator means 500 is provided with a hollow actuator body 501 coupled to the cover plate 306, the check valve protruding to the upper end of the cover plate 306 on the inner circumferential surface of the actuator body 501. The outer peripheral surface of the valve body 201 of 200 is fitted. In addition, a push pin 503 is provided at an open upper side of the actuator body 501 so as to be liftable. A lower end of the push pin 503 contacts the valve shaft 204 of the check valve 200, and an upper end thereof is A magnetic body 504 away from the actuator body 501 is provided. In addition, the outer peripheral surface of the actuator body 501 is provided with a solenoid portion 502 consisting of a winding coil.

Therefore, when the DC 12V power is applied to the solenoid portion 502, the magnetic pin 503 is pulled down while the magnetic body 504 is pulled down, and the check shaft 200 is opened while the valve shaft 204 is pressed. Since the pressing pin 503 is formed with a cutout 505 on the outer circumferential surface, compressed air is discharged into a gap between the inner circumferential surface of the actuator body 501 and the cutout 505. When the power is cut off, the compressed spring 206 inside the check valve 200 is restored and the valve shaft 204 and the push pin 503 are raised to their original positions, and the check valve 200 is blocked.

15 is a cross-sectional view of the check valve, the check valve 200 is provided with a valve body 201 in the form of a cone, the valve passage 202 is formed therein. A hollow sleeve 203 is fitted into the valve passage 202, and a valve shaft 204 pressurized by a spring 206 is provided inside the sleeve 203. The valve shaft 204 is provided with a valve plate 205 on one side to be in close contact with the side surface of the sleeve 203, the shaft guide 207 is provided on the opposite side to guide the movement of the valve shaft 204. At this time, the shaft guide 207 is formed with a cutout 208 is connected to the valve passage 202.

Therefore, when pneumatic pressure is generated in the forward direction, the valve plate 205 is pushed away from the side of the sleeve 203, and the valve passage 202 is opened. When pneumatic acting in the reverse direction, the valve plate 205 is closed and the valve passage 202 is closed. A) It is sealed.

The air compressor and the pneumatic control device according to an embodiment of the present invention configured as described above are provided with an air compressor, a pneumatic sensor, and an exhaust actuator on one substrate 600, and are organically coupled so that they can be generated and sent to the required place. Pneumatic pressure can be detected and discharged. In addition, the newly designed air compressor, pneumatic sensor and exhaust actuator can be miniaturized when using ready-made products.

For miniaturization, the motor 102 of the air compressor uses a DC12V geared motor, and since the deceleration is 1/400 while passing through the geared motor and the worm gear, it is possible to produce a large torque force in a small motor. In addition, since the motor 102 is capable of air compression of 600 psi at a speed of 6200 rpm, it is possible to immediately generate compressed air, thereby eliminating the need for a separate air storage tank.

The following describes the air compression process. When the worm gear 106 and the worm wheel 107 are rotated by the rotation of the motor 102, the cam 110 revolves at a high speed via the eccentric cam lever 108. In this case, the cam 110 and the cam 110 are rotated through a rectangular hole. The connected cam guide 117 is reciprocated.

The guide shaft 116 and the piston rod 115 are reciprocated together by the reciprocation of the cam guide 117, the piston rod 115 is provided with a suction passage 120 therein, the reverse flow prevention opening 122 Piston 118 having the () is reciprocated in the cylinder chamber (112).

When the piston 118 is reversed, air flows in from the suction hole 121 at the rear end of the piston rod 115 and pushes the backflow prevention device 122 through the suction passage 120 to prevent the backflow prevention device 122 ) Falls from the suction passage 120. At this time, air is introduced into the gap between the cutout 123 formed on the outer circumferential surface of the backflow prevention opening 122 and the inner circumferential surface of the piston 118 to fill the cylinder chamber 112.

In addition, when the piston 118 is advanced, the inside of the cylinder chamber 112 is temporarily compressed, and the backflow prevention device 122 is pushed in the opposite direction to be in close contact with the side surface of the suction passage 120 to block the suction passage 120. The cutting portion 123 of the backflow prevention opening 122 is formed on the inner circumferential surface of the suction passage 120 to prevent air leakage. At this time, the valve shaft 204 of the check valve 200 is pushed by the compressed air in the cylinder chamber 112, the valve plate 205 falls from the sleeve 203, the compressed air is connected to the valve passage 202 and the block It is directed to the passage 301 of 300 and then sent to the desired place in the supply and discharge mechanism 305.

Since the piston rod 115 continues to reciprocate while the motor 102 rotates at high speed, compressed air is instantaneously generated according to the forward and backward movement of the piston 118. Therefore, no separate air storage tank is required.

In addition, while compressed air is generated, pneumatic pressure is generated into the sensor body 401 connected to the sensor passage 302 of the connection block 300, and the movable part 404 inside the sensor chamber 402 receives the pneumatic pressure. The spring 405 is compressed. At this time, the induced current value is changed while the distance between the secondary coil part 407 wound on the outer peripheral surface of the movable part 404 and the primary coil part 406 wound on the outer peripheral surface of the sensor body 401 is changed. Therefore, by detecting the changing value it is possible to detect the change in the strength of the pneumatic.

The air compressor may be started or stopped according to the pneumatic pressure detected by the pneumatic sensor means 400. In addition, the exhaust actuator means 500 is used when forcibly discharging the air pressure is supplied to the object as desired.

When power is applied to the solenoid portion 502 of the exhaust actuator means 500, the magnetic pin 503 is pulled down while the magnetic body 504 is pulled down, and the check valve 200 is opened while the valve shaft 204 is pressed. do. At this time, the compressed air is discharged into a gap between the inner circumferential surface of the actuator body 501 and the cutout 505 of the push pin 503, and when the power is cut off, the spring 206 that is compressed inside the check valve 200 is discharged. The check valve 200 is blocked while being restored.

Therefore, the pneumatic control device of an embodiment of the present invention can quickly supply the air pressure generated from the air compressor to the object, and also detect the air pressure in the pneumatic sensor means to control the operation of the air compressor, the object in the exhaust actuator means Because it can discharge the pneumatic pressure, it can be miniaturized.

16 to 18 are related to a shock absorber system of a vehicle using the air compressor and the control device of an embodiment of the present invention, the air tube 702 in the coil spring 701 of the shock absorber 700 provided for each wheel of the vehicle ) Is provided, each air tube 702 is provided with a pneumatic regulator of one embodiment of the present invention one-to-one. In addition, a controller 703 having a built-in GPS chip is provided in the vehicle and connected to each pneumatic regulator and a signal line. The controller 703 is also wirelessly connected to a portable communicator 704 such as a tablet PC or smartphone.

Therefore, the controller 703 senses the vehicle speed and operates the exhaust actuator means 500 of the pneumatic control device at high speed to discharge the air from the air tube 702, and lowers the vehicle body to stabilize the posture. And when the low speed can operate the air compressor to supply air pressure to the air tube 702 to increase the vehicle body. In addition, since the pneumatic strength of the air tube 702 according to the vehicle speed is set in advance, the controller 703 is connected to the pneumatic sensor means 400 and the controller 703 by a signal line while discharging or supplying air. The pneumatic state of the air tube 702 is constantly monitored, and when the appropriate amount, the controller 703 controls the exhaust actuator means 500 and the air compressor.

The controller 703 operates by receiving a signal from the GPS chip and the pneumatic sensor means 400 without receiving a signal from the ECU of the vehicle body.

Therefore, the shock absorber system of one embodiment of the present invention does not need to have a separate air storage tank because the pneumatic control device is provided separately, there is an advantage that the configuration is simplified without increasing the vehicle weight.

Claims

Drive means having an eccentric cam rotated by a motor;

A cylinder block connected to the cam and the piston rod and having a piston reciprocated in the cylinder chamber;

The piston rod is provided with a hollow suction passage inlet the outside air;

The piston has a built-in backflow prevention opening and closing the suction passage, the suction passage is opened when the piston is retracted, the outside air flows into the cylinder chamber, the compressed air is generated when the suction passage is blocked by the backflow prevention opening An air compressor characterized in that the.
The method of claim 1,

The driving means is an air compressor, characterized in that consisting of a worm gear rotated by a motor and a worm wheel is rotated at high speed in the eccentric state through a cam lever.
The method of claim 1,

The cylinder block is provided with a check valve chamber having a cylinder chamber and a check valve orthogonally therein, and the air compressed in the cylinder chamber is supplied to the object through the check valve.
A reciprocating air compressor comprising a driving means and a cylinder block;

A connection block coupled to the cylinder block and having a supply / exhaust mechanism for supplying or discharging compressed air to an object;

Pneumatic sensor means for horizontally connected to the connecting block for detecting the pneumatic pressure; And

Pneumatic control device characterized in that consisting of an exhaust actuator means for discharging the pneumatic is vertically connected to the connection block.
The method of claim 4, wherein

The driving means of the air compressor is composed of a worm gear rotated by a motor and a cam rotated at a high speed in an eccentric state through a cam lever to a worm wheel;

The cylinder block of the air compressor is provided with a check valve chamber having a cylinder chamber and a check valve orthogonally therein, the cylinder chamber is provided with a piston of the piston rod connected to the cam reciprocating;

The piston rod has a suction passage is formed inside the hollow hollow, the back pressure prevention device for compressing the air flowing into the suction passage is provided with the inside of the piston.
The method of claim 4, wherein

The pneumatic sensor means is provided with a hollow sensor body with one open, the primary coil portion is wound on the outer peripheral surface;

A secondary coil part is wound around an outer circumferential surface of the sensor body with a movable part reciprocated therein;

Pneumatic adjustment characterized in that the sensor cover surrounding the open portion of the sensor body has a spring for pressurizing the movable portion is built to sense the induced current change of the primary and secondary coil portions while the movable portion is reciprocated according to the pneumatic pressure Device.
The method of claim 4, wherein

The exhaust actuator means is provided with a check valve inside the connection block;

A hollow actuator body is provided at an upper portion of the connection block in series with the check valve;

A push pin in contact with the valve shaft of the check valve is provided inside the actuator body, and an upper end of the push pin is provided with a magnetic body protruding to the outside of the actuator body;

The outer circumferential surface of the actuator body is provided with a solenoid portion, when the power is applied, the magnetic body by pulling the push pin the valve shaft by pressing the valve shaft, characterized in that the pneumatic pressure regulating device is released.
The pneumatic control device according to any one of claims 4 to 7 is provided on the shock absorber of each of the front wheel and the rear wheel of the vehicle;

Each shock absorber is provided with an air tube connected with an air supply / exhaust mechanism of the pneumatic control device;

The controller controls the pneumatic control device to supply or exhaust air pressure to each air tube according to the vehicle speed and the signal value of the pneumatic sensor means of the pneumatic control device. .
The method of claim 8,

The controller has a built-in GPS chip so as to independently detect the vehicle speed irrespective of the ECU of the vehicle, the shock absorber system for a vehicle using a pneumatic control device.