JPS58217763A - Driver for fluid compressor - Google Patents

Abstract

PURPOSE:To drive not only the starting of an engine but also the fluid compressor by one starter motor by connecting the fluid compressor to the stater motor. CONSTITUTION:A reciprocating compressor 50 for a car height regulator is connected to a main body 1 of a starter motor. The discharge nipple 80a of the compressor 50 is connected to an air shock absorber 120 on the rear wheel side of a car through an air path 121. An electromagnetic discharge valve 122 is connected to the air path 121, and one of the electromagnetic discharge valve 122 is opened to atmospheric air. When closing a starting switch, a starter 1 starts the engine while the reciprocating compressor 50 is also turned simultaneously, but a suction valve 81 is opened through the operation of an electromagnetic coil 100, pump action is not executed, and small load torque may be used for driving the compressor, thus damaging no function of the starter.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drive device for a fluid compressor, for example, an air compressor for a vehicle height adjustment device and a device having an engine starter function.

At present, fluid compressors for vehicle height adjustment devices are driven by motors. However, since the fluid compressor is driven only for a short period of time, it is not efficient to have a dedicated motor for it in terms of cost, installation location, etc.

The present invention was devised in view of the above points, and an object of the present invention is to achieve the two functions of a starter and a fluid compressor with a small and lightweight device.

Therefore, in the present invention, a fluid compressor is attached to the motor section of the starter, and a load reduction device is disposed on the fluid compressor. A configuration is adopted in which the load reduction device is activated when the starter is activated. In other words, by operating the starter while greatly reducing the load on the fluid compressor, a small and lightweight device can effectively perform the two functions of a starter and a fluid compressor without any special latches or the like. It is something to be achieved.

(2) The present invention will be explained below with reference to embodiments shown in the figures.

1 and 2 show the first embodiment,
A case will be described in which an air compressor for vehicle height adjustment is connected as a fluid compressor to an armature of a starting device.

2 is a motor body, 2 is a yoke, which is fixed to a housing 3 and an end housing 4, has a feed coil 5 inside, and further has an armature 6 wound with a coil inside. A commutator 7 is supplied with current from a brush 8. 9 is a lead wire, 10.11 is an electrode terminal, and together with the electrode disk 12, the first main solenoid switch (first M
5). 13 is a solenoid coil; 14 is a solenoid spool, which has the electrode disc 12 at one end and an arm 15 at the other end; the tip of the arm 15 is a hook 15a; Activate. 18 is an electrode disk, which is connected to the second main solenoid switch (
2nd M5). 19 is a solenoid coil, 2
0 is a spool of a solenoid (3) which has the electrode disc 18 at one end. 21 is an overrunning clutch, 22 is a binion,
23 and 24 each indicate a bearing.

50 is a reciprocating compressor, 51 is a cylinder housing, a cylinder liner 52 is driven into this cylinder housing 51, and a piston 53 is arranged on the inner periphery thereof. The space between the piston 53 and the cylinder liner 52 is sealed by a piston ring (not shown). A connecting rod 54 has a piston pin 55 driven into one end thereof, and both ends of the piston pin 55 are rotatably supported by the piston 53. A bearing 56 is driven into the other end of the connecting rod 54, into which a crankshaft 57 is fitted, and movement in the axial direction is prevented by a circlip 58. Reference numeral 59 denotes a drive shaft, and a threaded portion 59a is integrally formed at the end of this shaft 59. And this threaded part 59
A crankshaft 57 is fixed to a by screw tightening.

The cylinder housing 51 is fixed to the machined housing 4 with bolts 60 (4). Further, 61 is a bearing that rotatably supports the drive shaft 59.

70 is a reciprocating compressor 5 that reduces the rotation of the armature 6.
0, 71 is a sun gear fixed to the end housing 4, 72 is a drive gear fixed to the shaft of the armature, and 73 is a planetary gear fixed to a pin 74 fixed to the drive shaft 59. has been done.

Here, one of the drive shafts 59 has a bearing 6 as described above.
1 and the other is supported by a bearing 75 provided on the inner periphery of the shaft of the armature 6. The gears 71, 7
2.73 forms a planetary gear mechanism.

Next, the configuration of valves and the like will be explained.

A valve holder 80 holds a suction valve 81 and a discharge valve 82, and a compression chamber 83 is formed by the valve holder 80, the piston 53, and the cylinder liner 52. 84
．． Reference numeral 85 denotes a spring arranged in a direction that presses the suction valve 81 and the discharge valve 82 against their respective seat surfaces, and 86 denotes a valve guide fixed to the valve holder 80 to prevent the suction valve 81 from wobbling. are doing.

Reference numeral 87 indicates a plate that covers the upper surface of the valve holder 80, and reference numeral 88 indicates a gasket.The plate 87 and the gasket 88 are fixed together with the valve holder 80 to the cylinder housing 51 by machine screws 89.

With the above configuration, the valve holder 80 is connected to the suction valve 81.
A suction chamber 90 having a discharge valve 82 is formed, and a discharge chamber 91 having a discharge valve 82 is formed. Here, the suction chamber 90 communicates with the atmosphere through a filter 92 and an inlet (not shown). Further, the discharge chamber 91 is connected to other devices through a discharge nipple 80a provided on the valve holder 80.

Next, 100 is an electromagnetic coil fixed to the plate 87,
It is arranged on the axis of the suction valve 81. electromagnetic coil 100
is composed of a core 101, a bobbin 103 around which a coil 102 is wound, a yoke 104 surrounding the coil 102, a plunger 105, and a spring 106. bobbin 103
A plunger 105 is adapted to slide on the inner diameter 103(6)b, and the plunger 105 is composed of a bushing rod 1.5a and a guide ring 105b.

Among the above components, the core 101, the yoke 104, and the guide ring 105b of the flange 105 are made of magnetic material,
These constitute a magnetic circuit. A load reduction device is formed by the electromagnetic coil 1001, suction valve 81, and the like.

A cover 93 covers the crank chamber 95 formed by the cylinder housing 51, and is fixed with machine screws 94.

30 is the battery, 31 is the start switch (S,, S)
, 32 is a compressor switch (C) for opening and closing the second main switch and operating the reciprocating compressor 50.
S). 34 is an electronic control circuit that controls the operation of the compressor switch (C5) 32. Further, the electromagnetic coil 100 is operated by a signal from the electronic control circuit 34.

Next, an example in which the reciprocating compressor 50 is applied to a car height adjustment device will be described.

(7) FIG. 3 is a system diagram showing the interrelationship of each component of the vehicle height adjustment device, where 50 is the reciprocating compressor and 2 is the motor. Reference numeral 120 denotes an air shock absorber on the rear wheel side of the vehicle, which is connected to the discharge nipple 80a of the reciprocating compressor 50 through an air passage 121. An electromagnetic exhaust valve 122 is connected to the air passage 121, and one side of the electromagnetic exhaust valve 122 is open to the atmosphere so that compressed air can be released. Reference numeral 123 denotes a vehicle height sensor disposed on the rear side to detect the height of the vehicle, and an electrical signal from this sensor 123 is sent to the electronic control circuit 34. Also, the electromagnetic discharge valve 122
are opened and closed by electrical signals from the electronic control circuit 34.

Next, the operation of the above configuration will be explained with reference to FIG.

When the start switch (S, 5) 31 is closed, the electronic control circuit 34 receives the signal, energizes the electromagnetic coil 100 of the reciprocating compressor 50, forcibly opens the suction valve 81, and opens the compression chamber 83 to the atmosphere. and communicate with.

When the start switch (S, 5) 31 is closed, the solenoid coil 13 (8) is energized, the spool 14 is pulled to the right, and the lever action of the drive lever 17 moves the overrunning switch 21 to the left. , Binion 2
Move 2 to the left. At the same time, due to the operation of the spool 14, the electrode disk 12 is pressed against the electrode terminals 10°11, the first main switch (first M5) is closed, and current flows from the brush 8 through the commutator 7 to the coil of the armature 6. When energized, the pinion 22 is rotated by the armature. This allows it to operate as a starter. As the armature 6 rotates, the crankshaft 57 of the reciprocating compressor 50 is also rotated at the same time, but since the suction valve 81 is opened by the operation of the load reduction device, that is, the electromagnetic coil 100, no pumping action is performed, and a small Since only the load torque is required, there is no problem with the function of the starter.

Next, after the starter is activated, start switch (S, 5) 31
When the solenoid coil 13 is opened, the energization to the solenoid coil 13 is cut off, the spool 14 moves to the left, and the first main solenoid switch is opened. (9) Therefore, the power supply to the coil of the armature 6 is cut off, and the rotation of the armature 6 is stopped. In addition, the overrunning clutch 21 and the pinion 22 also move to the right and stop functioning as a starter.

The electromagnetic coil 100 is energized by the start switch (S, 5).
) 31, the electronic control circuit 34 receives the signal,
It is designed to shut off after a predetermined period of time. That is,
After the start switch (S, S) 31 is opened and the armature is reliably stopped, the energization to the electromagnetic coil 100 is cut off.

Next, the operation of the vehicle height adjustment device will be explained.

If the vehicle height is lowered due to a large number of passengers or luggage, the vehicle height sensor 123 detects this and the electronic control circuit 34 closes the compressor switch (C, 5) 32. As a result, the solenoid coil 19 is energized, the spool is pulled 20 to the right, the electrode disc 18 is pressed against the electrode terminal 10.11, and the second main switch (2nd M, S) is
is closed. Therefore, current is applied from the brush 8 to the coil of the armature 6 through the commutator 7, and (10
) Armature 6 rotates. This rotation of the armature 6 is decelerated by a speed reduction device 70 and transmitted to the crankshaft 57, so that the piston 53 slides within the cylinder liner 52. The compressed air compressed by the reciprocating compressor 50 is transferred to the air passage 1
21 and is supplied to the air shock absorber 120.
Raise the vehicle height.

The vehicle height sensor 12 then detects that the vehicle height has reached a predetermined height.
3 is detected, the compressor switch 32 is opened by a signal from the electronic control circuit 34, and the solenoid coil 19 is opened.
Power is cut off. Therefore, the spool 14 moves to the left, the second main solenoid switch (No. 2 M5) is opened, the power supply to the armature 6 is cut off, and the reciprocating compressor 50 is stopped.

Conversely, when the vehicle height becomes higher than the predetermined position due to an empty vehicle, etc., the electromagnetic exhaust valve 122 is opened in response to a signal from the electronic control circuit 34, and the compressed air in the air shock absorber 120 is released to the atmosphere to lower the vehicle height. lower.

Next, a second embodiment will be described with reference to FIG.

In the first embodiment, when starting the engine, the electromagnetic coil 100 disposed in the reciprocating compressor 50 is energized, and the suction valve 81 is energized.
Although the load on the reciprocating compressor 50 was reduced to 11 by forcibly opening the reciprocating compressor 50, a load reducing device having a configuration as shown in FIG. 5 may also be used. That is, the solenoid valve 130 is disposed near the air shock absorber 120, so that when the solenoid valve 130 blocks the air passage 121, the compressed air in the air shock absorber 120 can be held.

Then, the starting switch (s, 5) 31 is closed, and the electromagnetic discharge valve 122 is energized to open the valve.
30 to block the air passage 121. By doing so, the discharge chamber 90 of the reciprocating compressor 50 is opened to the atmosphere, the load on the reciprocating compressor 50 can be reduced as in the first embodiment, and the engine can be started reliably.

When adjusting the vehicle height, when the vehicle height is lowered, the compressor switch (C, 5) 32 closes and the solenoid valve 130 closes.
The compressed air from the reciprocating compressor 50 is supplied to the absorber 120.

Conversely, if the vehicle height rises above the predetermined position, the solenoid valve 130,
Open the electromagnetic discharge valve 122 and open the air shock absorber 1.
The compressed air in 20 is released into the atmosphere to lower the vehicle height.

The present invention has other aspects in addition to the first and second embodiments described above.

That is, in the first and second embodiments, compressed air was used as the fluid pumped by the fluid compressor, but it is also possible to create a vacuum by pumping gas and use this vacuum. good. In that case, it can be applied not only to a vehicle height adjustment device but also to a brake booster or the like. That is, in the present invention, the fluid compressor also includes a vacuum pump.

Furthermore, although a reciprocating type compressor is used as the fluid compressor in the second embodiment, a rotary vane type compressor may also be used.

In addition, in the first embodiment, the electromagnetic coil 100 as a load reduction device was used only when starting the engine (13), but when adjusting the vehicle height, the compressor switch (C) was used.

5) When 32 is closed, the electromagnetic coil 100 is also energized,
A load reduction device may be used to reduce the starting torque of the compressor. The vehicle height adjustment function can be activated by energizing the electromagnetic coil 100 for several seconds and then cutting it off. Also, in the second embodiment, by operating the electromagnetic discharge valve 122 instead of the electromagnetic coil 100, it is possible to obtain the same effect of reducing the starting load of the compressor as in the first embodiment described above.

Further, in the first embodiment, the electromagnetic coil 100 is energized by a signal from the control circuit 34, but the electromagnetic coil 100 may be energized in conjunction with the start switch (s, 5) 31. That is, the same effect can be obtained even if the solenoid coil 13 and the electromagnetic coil 100 are wired in parallel.

Further, in the second embodiment, the electromagnetic discharge valve 122 is operated together with the starting switch (S, 5) 31;
It may be open all the time. That is, the electromagnetic exhaust valve may be closed only when the vehicle height is lowered and compressed air is supplied to the shock absorber (14) bar 120, and kept open at all other times.

As explained above, in the device of the present invention, a fluid compressor is connected to the starter motor, and the fluid compressor is equipped with a load reduction device, and when the engine is started, this load reduction device operates to reduce the load on the fluid compressor. Since the power consumption is reduced, a single starter motor can not only start the engine but also drive the fluid compressor. Therefore, there is no need to separately install a motor exclusively for the fluid compressor (it has the effect of significantly reducing the installation space).

Moreover, since the present invention uses the load reduction device described above, it becomes possible to directly connect the starter motor and the fluid compressor, and a clutch or the like can be made unnecessary. At the same time, if a load reduction device is used, the load on the motor to start the fluid compressor can be reduced, and it is possible to operate the fluid compressor with a small-capacity motor.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the device of the present invention, FIG. 2 is a sectional view showing the electromagnetic coil shown in FIG. 1, FIG. 3 is a configuration diagram showing an example of use of the device shown in FIG. 1, and FIG. FIG. 3 is an explanatory diagram for explaining the operation of the apparatus shown in FIG. 3, and FIG. 5 is a configuration diagram showing another example of use of the apparatus of the present invention. 1... Motor body, 50... Reciprocating compressor, 100
...A solenoid valve that serves as a load reduction device. Representative Patent Attorney Takashi Okabe

Claims (1)

[Claims] (1) A starter motor that starts the engine, a fluid compressor that is directly connected to the starter motor and that pumps fluid, and a load reduction device that reduces the load on the fluid compressor. A fluid compressor drive device, wherein the load reduction device operates to reduce the load on the fluid compressor when the starter motor starts the engine. (2) The fluid compressor drive device according to claim 1, wherein the fluid compressor is a gas compressor for a vehicle height adjustment device. (3) The fluid compressor drive device according to claim 1 or 2, wherein the load reduction device is an electromagnetic coil that opens an intake valve of the fluid compressor. (4) The fluid compressor drive device according to claim 2, wherein the load reduction device is means for opening a discharge side passage of the fluid compressor. (1)