JP2012012981A - Onboard compressor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compressor that is made compact and can be used as a general purpose machine.SOLUTION: An input shaft 4 arranged in a free end of a crank case part 2b of a housing shaped in an L-shape by a cylinder part 2a in which a cylinder 2c is formed and the crank case part 2b is extended to a space 17 defined by the cylinder part and the crank case part of the housing, a coupling part 20 coupled to a rotating shaft 19 of an inside power source is arranged in the extension, and a flywheel 18 in the outer periphery of which a belt groove for winding a belt for transmitting the power of an outside power source is formed, is arranged.

Description

  The present invention relates to a vehicle-mounted compressor, and more particularly to a vehicle-mounted compressor having a configuration in which a rotational input is transmitted to a drive shaft via a crank mechanism and a vane is swung by the drive shaft.

  In-vehicle compressors are installed in tank trucks, chassis frames of powder trucks, etc., and supply liquid, powder, etc. (hereinafter referred to as fluid) into the tank, and discharge the fluid in the tank to the outside. There is something used for.

  In such a compressor, rotational power is input from an engine power take-out device to an input shaft through a coupling, and the rotational power transmitted to the input shaft is converted into a swinging motion by a crank mechanism to be driven to a drive shaft. There is a configuration in which a vane fixed to a drive shaft is swung in a cylinder (see Patent Document 1).

Japanese Patent Laying-Open No. 2008-20259 (see FIGS. 4 and 7)

  By the way, when installing the compressor on the chassis frame of a tank truck or a powder truck, other parts such as a fuel tank are integrated in the chassis frame. There is a strong demand for it.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a compressor that can be made compact and can be used as a general-purpose machine.

  In order to achieve the above-described object, the on-vehicle compressor according to claim 1 includes a housing formed in an L shape by a cylinder portion and a crankcase portion in which a cylinder is formed, and is rotatable in the cylinder portion of the housing. A drive shaft provided with a vane that is in sliding contact with the inner peripheral surface of the cylinder, and provided with a swing arm at one end thereof, and disposed in a free end portion of the crankcase of the housing in parallel with the drive shaft. A connecting portion connected to the rotating shaft of the internal power source is provided at the other end with a crank provided at one end, the other end extending to a space defined by the cylinder portion and the crankcase portion of the housing. An input shaft provided, a flywheel installed at the other end of the input shaft, and having a belt groove around which a power transmission belt of an external power source is wound, and a crank of the input shaft , Characterized in that the swinging arm of said drive shaft, and a crank mechanism comprised in said crankcase by a connecting rod connecting them.

  A vehicle-mounted compressor according to a second aspect is characterized in that, in the invention according to the first aspect, the input shaft is supported on the crankcase portion of the housing by a bearing arranged so as to sandwich the crank.

  The on-vehicle compressor according to a third aspect is characterized in that, in the invention according to the second aspect, the belt groove of the flywheel is formed at an end portion on the bearing side of the input shaft.

  According to a fourth aspect of the present invention, there is provided the in-vehicle compressor according to any one of the first to third aspects, wherein the discharge hole communicating with the pressure chamber of the housing is in the input shaft direction with respect to the drive shaft of the housing. It is characterized by being arranged in a direction perpendicular to

  A vehicle-mounted compressor according to a fifth aspect is characterized in that, in the invention according to the first aspect, the compressor is installed in a chassis of a vehicle body, and an end portion of the input shaft is connected to an engine of the vehicle body by a propeller shaft.

  According to a sixth aspect of the present invention, there is provided the in-vehicle compressor according to the first aspect, wherein the rotary shaft of the hydraulic pump is arranged in parallel with the input shaft, and the rotary shaft is linked to each other by the input shaft and the gear. The tip of the rotating shaft extends into the space defined by the annular portion of the flywheel and the hub, and the pump portion of the hydraulic pump is disposed in the space.

  According to the above-described on-vehicle compressor, since the flywheel is disposed in the space defined by the cylinder portion and the crankcase portion, the compressor can be made compact, and the flywheel Since a belt groove for transmitting external power is formed on the outer peripheral surface, it can also be used as a general-purpose machine.

  Moreover, according to the on-vehicle compressor of the second aspect, the input shaft including the crank that forms a part of the crank mechanism is reliably supported.

  Further, according to the on-vehicle compressor according to claim 3 described above, when the flywheel is rotated by the belt of external power, a load in a direction perpendicular to the input shaft is applied to the input shaft. Since the belt groove is formed near the bearing, the load on the input shaft can be reduced.

  According to the on-vehicle compressor of claim 4, the discharge hole formed in the housing is not formed on the surface on the input shaft side. That is, since a discharge passage is not formed on the input shaft side surface of the housing, a space for accommodating the flywheel can be secured widely, and a flywheel having a larger diameter can be provided.

  According to the on-vehicle compressor of the fifth aspect, the engine power is transmitted to the input shaft via the propeller shaft, so that the structure is simple and the power can be reliably transmitted.

  Moreover, according to the on-vehicle compressor of the sixth aspect, since the hydraulic pump is housed in the flywheel, the compressor does not increase in size.

It is a top view of the compressor concerning the present invention. It is a section top view of the compressor concerning the present invention. It is sectional drawing of the part which follows the III-III line | wire in FIG. It is the top view which showed the state which drives the compressor which concerns on this invention with external power. It is the figure which showed the installation state of the compressor which concerns on this invention.

  Hereinafter, an in-vehicle compressor according to the present invention will be described in detail with reference to the drawings.

A housing 2 of the in-vehicle compressor 1 is formed in an L shape by a cylinder portion 2a and a crankcase portion 2b, and a cylinder 2c is formed in the cylinder portion 2a.
In the housing 2, the drive shaft 3 disposed on the axis of the cylinder 2 c, the input shaft 4 disposed in parallel with the drive shaft 3 at the free end of the crankcase portion 2 b, and the drive shaft 3 A power transmission mechanism is configured by the crank mechanism 5 that connects the end and the end of the input shaft 4.

  On the inner surface of the cylinder 2c, a fluid suction table 6 is disposed at a portion facing each other. The suction table 6 is disposed over substantially the entire length of the cylinder 2 c, the tip extends to the drive shaft 3, and the cylinder 2 c is defined by two pressure chambers 7 and 7.

  A suction passage 8 extending in the longitudinal direction is formed in the suction table 6. The suction passage 8 is formed with a plurality of suction holes 9 that connect the suction passage 8 and the pressure chamber 7, and reed valves 10 are respectively disposed at portions of the suction holes 9 that open to the pressure chamber 7. ing. A suction passage 11 is formed at the end of the cylinder portion 2 a of the housing 2, and the suction passage 11 communicates with the end of the suction passage 8 of the suction table 6.

  A plurality of discharge holes 12 that open to the pressure chambers 7 are provided in the vicinity of the suction tables 6 in the cylinder portion 2 a of the housing 2. On the other hand, a cover 2d is installed in the cylinder portion 2a of the housing 2 so as to cover the plurality of discharge holes 12, and a discharge passage 13 is formed between the cover 2d and the cylinder portion 2a. A reed valve 14 is disposed at the opening of the discharge hole 12 on the discharge passage 13 side. Both discharge passages 13 are communicated with each other by a discharge pipe 15 at an intermediate portion of the cylinder portion 2 a of the housing 2. A discharge port 15 a is formed in the middle portion of the discharge pipe 15.

Both ends of the drive shaft 3 are supported by bearings 2e and 2f. Two vanes 16 extending in the radial direction into the pressure chamber 7 are fixed to the drive shaft 3 so as to face each other. The free end of the vane 16 is in sliding contact with the inner surface of the cylinder 2c.
Further, a swing arm 5 a forming a part of the crank mechanism 5 is fixed to the end of the drive shaft 3.

  The input shaft 4 is formed with a crank 5b that forms part of the crank mechanism 5 at one end. The input shaft 4 is rotatably supported by bearings 2g and 2h of the housing 2 arranged so as to sandwich the crank 5b. The other end portion of the input shaft 4 extends from the bearing 2 h to a space portion 17 defined by the cylinder portion 2 a and the crankcase portion 2 b of the housing 2, and a flywheel 18 is disposed at the end portion of the input shaft 4. Has been.

  The flywheel 18 includes a hub 18 a, and the hub 18 a is fixed to the other end of the input shaft 4. The hub 18a is connected to internal power mounted on the vehicle, for example, an output shaft 19 of an engine power take-off device, by a connecting portion 20 such as a universal joint. Further, the outer peripheral surface of the flywheel 18 has an end portion on the side of the bearing 2h on which external power, for example, a V belt 22 for winding a V belt 22 that forms part of power transmission means with the motor 21 as shown in FIG. A groove 18b is formed. The crank 5b of the input shaft 4 is connected to the swing arm 5a of the drive shaft 4 via a connecting rod 5c.

  When the input shaft 4 is rotated, the rotational force is transmitted to the swing arm 5a of the drive shaft 3 via the crank 5b and the connecting rod 5c, and the swing arm 5a is swung around the drive shaft 3, Accordingly, the drive shaft 3 is rotated. The drive shaft 3 is rotated in a range where the central angle is 90 degrees, and the vane 16 is swung in the pressure chamber 7. When the vane 16 is swung in the pressure chamber 7, the pressure in the pressure chamber 7 repeatedly changes between high pressure and low pressure. When the pressure chamber 7 becomes low pressure, the reed valve 10 is opened, and the fluid in the tank 30 flows into the pressure chamber 7 through the suction passages 11 and 8 as shown in FIG. When the pressure chamber 7 becomes high pressure, the reed valve 14 is opened, and the fluid in the pressure chamber 7 is discharged to the discharge passage 13 and discharged to the outside through the discharge pipe 15.

  In the compressor 1, the shaft 23 a of the hydraulic pump 23 is disposed in parallel with the input shaft 4 and is rotatably supported by the bearing 2 i of the housing 2. One ends of the shafts 4 and 23a are linked to each other by gears 24a and 24b, and the main portion 23b of the hydraulic pump 23 is accommodated in a space 18d defined by the hub 18a and the annular portion 18c of the flywheel 18. Yes. Then, the lubricating oil collected at the bottom of the housing 2 is supplied by the hydraulic pump 23 to the sliding portion such as the crank pin 5d of the crank 5a.

  The compressor 1 configured as described above is installed, for example, via a bracket 32 on a chassis frame 31 below a tank 30 for liquid, powder, or the like.

DESCRIPTION OF SYMBOLS 1 Car-mounted compressor 2 Housing 2a Cylinder part 2b Crankcase part 2c Cylinder 2d Cover 2e, 2f, 2g, 2h, 2i Bearing 3 Drive shaft 4 Input shaft 5 Crank mechanism 5a Swing arm 5b Crank 5c Connecting rod 5d Crank pin 6 Suction Table 7 Pressure chamber 8 Suction passage 9 Suction hole 10 Reed valve 11 Suction passage 12 Discharge hole 13 Discharge passage 14 Reed valve 15 Discharge pipe 15a Discharge port 16 Vane 17 Space portion 18 Flywheel 18a Hub 18b V groove 18c Annular portion 18d Space 19 Output shaft 20 Connecting portion 21 Motor 22 V belt 23 Hydraulic pump 23a Shaft 23b Main portion 24a, 24b Gear 30 Tank 31 Chassis frame 32 Bracket

Claims (6)

A housing formed in an L shape by a cylinder part and a crankcase part in which a cylinder is formed;
A drive shaft that is rotatably disposed within a cylinder portion of the housing, includes a vane that is in sliding contact with an inner peripheral surface of the cylinder, and includes a swing arm at one end;
In the free end portion of the crankcase portion of the housing, it is arranged in parallel with the drive shaft, provided with a crank at one end, and the other end extending to a space defined by the cylinder portion and the crankcase portion of the housing. An input shaft having a connecting portion connected to the rotating shaft of the internal power source at the other end,
A flywheel that is installed at the other end of the input shaft and has a belt groove around which an outer power source belt for power transmission is wound;
A crank mechanism configured in the crankcase by a crank of the input shaft, a swing arm of the drive shaft, and a connecting rod connecting them;
An on-vehicle compressor characterized by comprising:   The in-vehicle compressor according to claim 1, wherein the input shaft is supported by a crankcase portion of a housing by a bearing arranged so as to sandwich the crank.   The in-vehicle compressor according to claim 2, wherein a belt groove of the flywheel is formed at an end portion on a bearing side of the input shaft.   The in-vehicle device according to any one of claims 1 to 3, wherein the discharge hole communicating with the pressure chamber of the housing is disposed in a direction perpendicular to the input shaft direction with respect to the drive shaft of the housing. Compressor.   The in-vehicle compressor according to claim 1, wherein the compressor is mounted on a chassis of a vehicle body, and an end portion of the input shaft is connected to an engine of the vehicle body by a propeller shaft.   The rotary shaft of the hydraulic pump is arranged in parallel with the input shaft, the rotary shaft is linked to each other by the input shaft and a gear, and the tip of the rotary shaft is defined by the annular portion and the hub of the flywheel. The in-vehicle compressor according to claim 1, wherein the in-vehicle compressor is extended to a space and the pump portion of the hydraulic pump is disposed in the space.

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