JP2009287475A - Fluid pump installing device and fluid pump installing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fluid pump installing device capable of easily installing a fluid pump to feed the fluid by pressure with rotation of a pump shaft and a transmitting member to an object for fixation and provide a fluid pump installing method. <P>SOLUTION: The installing device 100 is used to install an oil pump 20 and a gear pump 30 to a crank case 10, wherein the oil pump 20 is provided with a body 12 having a suction hole 27 and a discharge hole 28 and a pump shaft 24 rotatably pivoted on the body 21, and can discharge and force-feed through the discharge hole 28 oil 1 sucked in from the suction hole 27 with rotation of the pump shaft 24, and the gear pump 30 can transmit rotative drive force to the pump shaft 24. The device 100 is equipped with a pump 110 to fill the oil 1 into the body 21 by supplying the oil 1 to the suction hole 27 of the oil pump 20 fixed to the crank case 10 and plugs 141 and 142 to block the suction hole 27 and the discharge hole 28 in the condition that the body 21 is filled with the oil 1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technique for assembling a fluid pump to an object to be fixed.

  2. Description of the Related Art Conventionally, a technique for providing an engine with an oil pump for circulating lubricating oil inside the engine is known. For example, as described in Patent Document 1.

The oil pump described in Patent Document 1 includes a pump shaft, and has a structure in which oil is pumped by being driven to rotate.
The pump shaft of the oil pump described in Patent Document 1 is rotationally driven by transmitting the rotation of the crankshaft of the engine to the pump shaft via a plurality of gears (drive gear, driven gear, pump gear).

  When assembling an oil pump as described in Patent Document 1 to an engine, usually the oil pump is first fixed to the crankcase of the engine, and then the pump gear is fixed to the pump shaft of the oil pump. At this time, since the pump gear is a member that transmits the rotational driving force to the pump shaft, the pump gear needs to be fixed to the pump shaft so as not to be relatively rotatable.

As a general method for fixing the pump gear and the pump shaft so as not to rotate relative to each other, a pair of planes (two-sided width) parallel to the tip of the outer peripheral surface of the pump shaft are formed and the pump gear is engaged with the pair of planes. There is a method in which a hole having a matching shape is formed and the tip of the pump shaft is fitted into the hole.
At this time, it is necessary to match the phase in the rotation direction of the pump shaft with the phase in the rotation direction of the pump gear.

However, if other parts are assembled densely around the oil pump, or if the shape of the crankcase itself to which the oil pump is assembled is complicated, the operator's hand may interfere with the other parts or the crankcase. However, the operator cannot hold the pump shaft by hand and hold it unrotatable.
Therefore, in the above case, the operator has fitted only the pump gear into the hole of the pump gear by holding only the pump gear by hand and pushing it into the pump shaft.

However, in the above method, it is difficult to visually grasp the phase in the rotational direction of the pump gear and the pump shaft, particularly when the hole formed in the pump gear does not penetrate to the end of the hand held by the operator. It is difficult to match the phase in the rotational direction of the pump shaft and the phase in the rotational direction of the pump gear.
Further, when the pump gear is forcibly pressed against the pump shaft and rotated, the pump shaft in contact with the pump gear rotates together with the pump gear, so that it is difficult to match the phases in the rotation direction of both.
In this way, when other parts are assembled densely around the oil pump, or when the shape of the crankcase itself to which the oil pump is assembled is complicated, the pump shaft is fitted into the hole of the pump gear. Is difficult.

Conventionally, a method described in Patent Document 2 is known as a method of matching phases in the rotational direction of two gears and assembling the two gears in a state where they are engaged with each other.
However, the method described in Patent Document 2 is for assembling two gears, whose rotation axes are offset from each other, to a fixed object, and for assembling the two mechanical elements in which the rotation axes are coaxial (in a straight line). It is practically impossible to apply the method described in Patent Document 2.
JP 2004-11575 A JP-A 61-274828

  The present invention has been made in view of the above circumstances, and it is possible to easily assemble a fluid pump that pumps fluid by rotation of a pump shaft and a transmission member that transmits a rotational driving force to the pump shaft to a fixed object. A fluid pump assembling apparatus and a fluid pump assembling method are provided.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, in claim 1,
A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump assembling device for assembling a fluid pump for pumping and a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid filling unit that fills the inside of the main body with the fluid by supplying fluid to either the suction port or the discharge port of the fluid pump fixed to the fixed object;
A closing portion for closing the suction port and the discharge port in a state where the fluid is filled in the main body;
It comprises.

In claim 2,
A main body having a suction port and a discharge port; a pump shaft rotatably supported by the main body; and a seal member disposed between the main body and the pump shaft, wherein the pump shaft rotates. A fluid pump that discharges and pumps oil sucked from the suction port through the discharge port, and elastically deforms the seal member due to the pressure of the oil sucked from the suction port and closely contacts the main body and the pump shaft; and A fluid pump assembling device for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid filling unit that fills the fluid pump main body with the fluid by supplying fluid to either the suction port or the discharge port of the fluid pump fixed to the fixed object;
A pressure applying unit that applies pressure to the fluid in a state where the fluid filled inside the main body does not move to the outside of the main body;
It comprises.

In claim 3,
A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump assembling device for assembling a fluid pump for pumping and a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A shaft rotating unit that rotates the pump shaft by supplying a fluid to either the suction port or the discharge port of the fluid pump fixed to the fixed object is provided.

In claim 4,
A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump for pumping, and a fluid pump assembling method for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump fixing step of fixing the fluid pump to the fixed object;
A fluid filling step of filling the fluid into the main body by supplying fluid to either the suction port or the discharge port;
A closing step of closing the suction port and the discharge port in a state where the fluid is filled in the body;
A fitting step of fitting the transmission member to the pump shaft so as not to be relatively rotatable;
It comprises.

In claim 5,
A main body having a suction port and a discharge port; a pump shaft rotatably supported by the main body; and a seal member disposed between the main body and the pump shaft, wherein the pump shaft rotates. A fluid pump that discharges and pumps oil sucked from the suction port through the discharge port, and elastically deforms the seal member due to the pressure of the oil sucked from the suction port and closely contacts the main body and the pump shaft; and A fluid pump assembling method for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump fixing step of fixing the fluid pump to the fixed object;
A fluid filling step of filling the fluid inside the body of the fluid pump by supplying fluid to either the suction port or the discharge port;
A pressure applying step for applying pressure to the fluid in a state where the fluid filled in the main body does not move to the outside of the main body;
A fitting step of fitting the transmission member to the pump shaft so as not to be relatively rotatable;
It comprises.

In claim 6,
A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump for pumping, and a fluid pump assembling method for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump fixing step of fixing the fluid pump to the fixed object;
The pump shaft is rotated by supplying a fluid to either the suction port or the discharge port, and the transmission member is pressed against the rotating pump shaft so that the transmission member cannot be rotated relative to the pump shaft. A fitting process for fitting;
It comprises.

  The present invention has an effect that a fluid pump that pumps fluid by rotation of a pump shaft and a transmission member that transmits a rotational driving force to the pump shaft can be easily assembled to an object to be fixed.

  In the following, prior to the description of the assembling apparatus 100 that is the first embodiment of the fluid pump assembling apparatus according to the present invention, the crankcase 10, the oil pump 20, and the pump gear 30 that are objects of assembling by the assembling apparatus 100 using FIG. Will be described.

The crankcase 10 is an embodiment of an object to be fixed according to the present invention.
The crankcase 10 is one of the members constituting the engine, and accommodates the crankshaft of the engine and rotatably supports it.
A suction side path 11 and a discharge side path 12 are formed in the crankcase 10.
In addition, the to-be-fixed object which concerns on this invention is not limited to the crankcase 10 of this embodiment, Widely includes "the object by which a fluid pump is fixed".

The oil pump 20 is an embodiment of a fluid pump according to the present invention. The oil pump 20 is a member (for example, a crankshaft, a bearing, and the like) that pumps oil stored in the crankcase 10 and is accommodated in the crankcase 10. Gears, etc.) and lubricate the members.
The oil pump 20 is an internal gear pump, and mainly includes a main body 21, an internal gear 22, an external gear 23, a pump shaft 24, and a seal ring 25.

"Fluid pump" broadly includes devices that pump fluid. Specific examples of the fluid pump include a piston pump, a vane pump, a gear pump (including an external gear pump and an internal gear pump), a screw pump, and the like.
“Fluid” broadly includes fluid liquids, gases or mixtures thereof. Specific examples of the fluid include water, alcohol, oil and the like for the liquid, and air, nitrogen gas, argon gas and the like for the gas.

The main body 21 is an embodiment of the main body according to the present invention, and is a member constituting the main structure of the oil pump 20. The main body 21 has a base 21a and a cover 21b.
The base 21 a is a substantially disk-shaped member that forms the lower half of the main body 21. A suction port 27 and a discharge port 28 are formed in the base 21a.
The cover 21 b is a substantially disk-shaped member that forms the upper half of the main body 21. A shaft support hole 29 is formed at the center of the cover 21b.

  The internal gear 22 is a ring-shaped member, and a plurality of teeth are formed on the inner peripheral surface thereof. The internal gear 22 is disposed at a position sandwiched between the base 21a and the cover 21b.

  The external gear 23 is a gear that meshes with the internal gear 22. The external gear 23 is accommodated in a space surrounded by the main body 21 and the internal gear 22 (more specifically, a space surrounded by the upper surface of the base 21a, the lower surface of the cover 21b, and the inner peripheral surface of the internal gear 22).

The pump shaft 24 is an embodiment of the pump shaft according to the present invention, and is a substantially cylindrical member. The pump shaft 24 is rotatably supported by the cover 21b in the middle of the pump shaft 24 by being inserted into a shaft support hole 29 formed in the cover 21b.
The external gear 23 is fixed to the lower end portion of the pump shaft 24 (the end portion that is immersed in the base 21a) so as not to be relatively rotatable.
Engagement surfaces 24a and 24a, which are a pair of planes parallel to each other, are formed at the upper end of the pump shaft 24 (the end protruding to the outside of the base 21a).

The seal ring 25 is an embodiment of a seal member according to the present invention, and is a member disposed between the main body 21 and the pump shaft 24.
The seal ring 25 is a ring-shaped member, and is fitted on the pump shaft 24 to come into contact with the middle portion of the outer peripheral surface of the pump shaft 24 and also comes into contact with the inner peripheral surface of the shaft support hole 29 formed in the cover 21b. .
As described above, the seal ring 25 prevents oil from leaking to the outside of the main body 21 through the gap between the outer peripheral surface of the pump shaft 24 and the inner peripheral surface of the shaft support hole 29.
The seal ring 25 is elastically deformed by the pressure of oil sucked from the suction port 27 (oil contained in the main body 21), and the main body 21 (more specifically, the inner peripheral surface of the shaft support hole 29) and the pump shaft. The shape is determined so as to be in close contact with (abut more strongly) 24.

As shown in FIG. 1, when the oil pump 20 is fixed to the crankcase 10, the base 21a and the cover 21b constituting the main body 21 are fixed to the crankcase 10 so as not to be relatively movable and relatively non-rotatable. The base 21a and the cover 21b are supported so as to be rotatable relative to each other. Further, the upper end portion of the pump shaft 24 (the end portion protruding to the outside of the base 21 a) protrudes from the crankcase 10.
Further, the suction port 27 of the oil pump 20 fixed to the crankcase 10 is connected to one end of the suction side path 11, and the discharge port 28 of the oil pump 20 fixed to the crankcase 10 is connected to one end of the discharge side path 12. Is done.

The pump gear 30 is an embodiment of a transmission member according to the present invention, and is a member that transmits the rotational driving force generated by the engine to the pump shaft 24.
A plurality of teeth that mesh with other gears are formed on the outer peripheral surface of the pump gear 30 of the present embodiment. A fitting hole 31 is formed in the center of the lower end surface of the pump gear 30. Engagement surfaces 31 a and 31 a which are a pair of planes parallel to each other are formed on the inner peripheral surface of the fitting hole 31. A flange portion 32 is formed at the lower end portion of the pump gear 30, and a cylindrical portion 33 is formed so as to extend from the peripheral portion of the flange portion 32.

As shown in FIG. 1, when the oil pump 20 and the pump gear 30 are assembled to the crankcase 10, the upper end portion of the pump shaft 24 is fitted into the fitting hole 31 of the pump gear 30 and is formed at the upper end portion of the pump shaft 24. The engaging surfaces 24a and 24a are in contact with engaging surfaces 31a and 31a formed on the inner peripheral surface of the fitting hole 31, respectively. As a result, the pump gear 30 is fitted to the pump shaft 24 so as not to be relatively rotatable.
A bearing 40 is interposed between the inner peripheral surface of the cylindrical portion 32 and the crankcase 10, and the pump gear 30 is rotatably supported by the crankcase 10 via the bearing 40.

When the engine having the crankcase 10 as one of the constituent members is driven, the rotational driving force of the engine is transmitted to the pump shaft 24 via the pump gear 30, and the pump gear 30 and the pump shaft 24 rotate so as not to rotate relative to each other (integrally). To do.
As a result, the oil pump 20 sucks oil stored in the crankcase 10 through the suction side passage 11, discharges it from the discharge port 28, and pumps it to various locations inside the crankcase 10 through the discharge side passage 12. .

The pump gear 30 of the present embodiment is a gear having a plurality of teeth formed on the outer peripheral surface, but the transmission member according to the present invention is not limited to this.
For example, the transmission member may be a sprocket, a pulley, or a shaft.

In this embodiment, engagement surfaces 24a and 24a are formed at the upper end portion of the pump shaft 24, engagement surfaces 31a and 31a are formed on the inner peripheral surface of the fitting hole 31 of the pump gear 30, and the engagement surfaces 24a and 24a. The engagement gears 31a and 31a are brought into contact with each other so that the pump gear 30 is fitted to the pump shaft 24 so as not to be relatively rotatable. However, the transmission member according to the present invention is fitted to the pump shaft so as not to be relatively rotatable. The configuration is not limited to this.
For example, a spline, a serration, or a key groove may be formed on the tip end portion of the pump shaft and the inner peripheral surface of the fitting hole formed in the transmission member, and the transmission member may be fitted to the pump shaft so as not to be relatively rotatable. .

  Below, the apparatus structure of the assembly | attachment apparatus 100 which is 1st embodiment of the fluid pump assembly | attachment apparatus based on this invention is demonstrated using FIGS.

An assembling apparatus 100 shown in FIG. 2 is an apparatus for assembling the oil pump 20 and the pump gear 30 to the crankcase 10.
The assembling apparatus 100 mainly includes a pump 110, an oil pan 120, a suction pipe 131, a pressure feed pipe 132, a return pipe 133, and plugs 141 and 142.

The pump 110 is an embodiment of the fluid filling unit according to the present invention.
The pump 110 of this embodiment is a so-called vane pump, and has a suction port 111 and a discharge port 112. The pump 110 pumps the oil 1 by discharging the oil 1 sucked from the suction port 111 from the discharge port 112.
Although the pump 110 of this embodiment is a vane pump, the fluid filling part according to the present invention is not limited to this. For example, another type of pump such as a piston pump may be used as the fluid filling portion according to the present invention.

The oil 1 is an embodiment of the fluid according to the present invention, and is the same type of oil as the oil used as a lubricating oil for an engine having the crankcase 10 with the oil pump 20 assembled thereto as a constituent member.
In the present embodiment, in order to reduce the labor of cleaning the inside of the oil pump 20 after the oil pump 20 and the pump gear 30 are assembled, the oil pumped by the oil pump 20 during use of the engine provided with the oil pump 20 (inside the engine) The same kind of oil 1 as the “fluid” is used as the “fluid”. However, the present invention is not limited to this. For example, instead of the oil 1, water, compressed air, or the like may be used as the “fluid”.

  The oil pan 120 is a container whose upper surface is open, and the oil 1 is stored therein.

The suction pipe 131, the pressure feed pipe 132, and the return pipe 133 are pipes that form a circulation path of the oil 1 pumped by the pump 110.
One end of the suction pipe 131 is connected to the suction port 111 of the pump 110. The other end of the suction pipe 131 is inserted into the oil pan 120 and immersed in the oil 1 stored in the oil pan 120.
One end of the pressure feeding pipe 132 is connected to the discharge port 112 of the pump 110, and the other end of the pressure feeding pipe 132 is connected to the suction side path 11.
One end of the return pipe 133 is connected to the discharge side path 12, and the other end of the return pipe 133 is inserted into the oil pan 120.

  The stoppers 141 and 142 are an embodiment of a closing portion according to the present invention, and close the suction port 27 and the discharge port 28 in a state where the oil 21 is filled in the main body 21.

Below, 1st embodiment of the fluid pump assembly | attachment method which concerns on this invention is described using FIGS. 2-6.
The first embodiment of the fluid pump assembling method according to the present invention is a “method of assembling the oil pump 20 and the pump gear 30 to the crankcase 10 using the assembling apparatus 100”. As shown in FIG. 6, the fluid pump fixing step S1100, A fluid filling step S1200, a closing step S1300, and a fitting step S1400 are provided.

The fluid pump fixing step S1100 is a step of fixing the oil pump 20 to the crankcase 10.
In the fluid pump fixing step S1100, the following operations (11-1) to (11-3) are sequentially performed (see FIG. 2).
(11-1) An operator connects the other end of the pressure feeding pipe 132 to the end of the suction side path 11.
(11-2) An operator connects one end of the return pipe 133 to the end of the discharge side path 12.
(11-3) An operator fixes the oil pump 20 to the crankcase 10.
The order of the operations (11-1) to (11-3) can be interchanged.
In the present embodiment, the worker performs the above-mentioned (11-1) to (11-3) manually, but these operations can be appropriately automated (mechanicalized).
When the fluid pump fixing step S1100 is completed, the process proceeds to the fluid filling step S1200.

The fluid filling step S1200 is a step of filling the oil 21 into the main body 21 by supplying the oil 1 to the suction port 27.
In the fluid filling step S1200, the operator operates the pump 110.
As shown in FIG. 3, when the pump 110 is operated, the oil 1 stored in the oil pan 120 is sucked into the pump 110 from the suction port 111 through the suction pipe 131.
The oil 1 sucked into the pump 110 is discharged from the discharge port 112, is pumped through the pressure feed pipe 132 and the suction side path 11, and is supplied to the suction port 27 of the oil pump 20.
The oil 1 supplied to the suction port 27 of the oil pump 20 is surrounded by the inside of the main body 21 of the oil pump 20 (in this embodiment, the upper surface of the base 21a, the lower surface of the cover 21b, and the inner peripheral surface of the internal gear 22). And reaches the discharge port 28 of the oil pump 20. At this time, the pump shaft 24 rotates.
The oil 1 that has reached the discharge port 28 of the oil pump 20 is returned to the oil pan 120 through the discharge port 28, the discharge side path 12, and the return pipe 133.
Thus, the pump 110 fills the inside of the main body 21 with the oil 1 by supplying the oil 1 to the suction port 27 of the oil pump 20 fixed to the crankcase 10.
When the fluid filling step S1200 is completed, the process proceeds to the closing step S1300.

The closing step S1300 is a step of closing the suction port 27 and the discharge port 28 in a state where the main body 21 is filled with the oil 1.
In the closing step S1300, the following operations (13-1) to (13-3) are performed in order (see FIG. 4).
(13-1) The operator stops the pump 110.
(13-2) The operator removes the other end of the pressure feeding pipe 132 from the end of the suction side passage 11 in a state where the oil is filled in the main body 21, and fits the plug 141 to the end of the suction side passage 11. Disguise.
(13-3) The operator removes one end of the return pipe 133 from the end of the discharge side passage 12 in a state where the oil is filled in the main body 21, and the stopper 142 is fitted to the end of the discharge side passage 12. To do.

When the operations (13-1) to (13-3) are performed, the suction port 27 and the discharge port 28 are closed, and the oil 1 filled in the main body 21 is sealed (inside the main body 21). The oil 1 filled in is in a state in which it cannot move to the outside from the suction port 27 and the discharge port 28).
As a result, the rotation of the pump shaft 24 is restricted by the oil 1 filled in the main body 21.
When the closing step S1300 is completed, the process proceeds to the fitting step S1400.

The fitting step S1400 is a step of fitting the pump gear 30 to the pump shaft 24 so as not to be relatively rotatable.
In the fitting step S1400, the following operations (14-1) to (14-2) are performed in order (see FIG. 5).
(14-1) An operator attaches the bearing 40 to the crankcase 10.
(14-2) An operator fits the pump gear 30 on the pump shaft 24 and pivotally supports the crankcase 10 via the bearing 40.

In (14-2), the operator is formed at the upper end portion of the pump shaft 24 by rotating the pump gear 30 while bringing the end portion of the fitting hole 31 of the pump gear 30 into contact with the upper end portion of the pump shaft 24. The pair of engaging surfaces 24 a and 24 a and the engaging surfaces 31 a and 31 a formed on the inner peripheral surface of the fitting hole 31 are in contact with each other, and the upper end portion of the pump shaft 24 is fitted into the fitting hole 31. Let
At this time, since the state in which the rotation of the pump shaft 24 is regulated by the oil 1 filled in the main body 21 in the previous closing step S1300 is maintained, the pump shaft 24 does not rotate with the pump gear 30. It is possible to easily fit the upper end portion of the pump shaft 24 into the fitting hole 31.

As described above, the assembling apparatus 100 is
A main body 21 in which a suction port 27 and a discharge port 28 are formed and a pump shaft 24 rotatably supported by the main body 21 are provided, and the oil 1 sucked from the suction port 27 is rotated by the rotation of the pump shaft 24. A fluid pump assembling device for assembling the oil pump 20 discharged from the pump 28 and the pump gear 30 for transmitting the rotational driving force to the pump shaft 24 to the crankcase 10;
A pump 110 that fills the inside of the main body 21 with the oil 1 by supplying the oil 1 to the suction port 27 of the oil pump 20 fixed to the crankcase 10;
Plugs 141 and 142 for closing the suction port 27 and the discharge port 28 in a state in which the oil 21 is filled in the main body 21;
It comprises.
This configuration has the following advantages.
That is, since the rotation of the pump shaft 24 is restricted by the oil 1 enclosed in the main body 21, the pump gear 30 can be easily fitted to the pump shaft 24. As a result, the oil pump 20 and the pump gear 30 can be connected to each other. It can be easily assembled to the crankcase 10.

  In the present embodiment, the oil 1 is supplied to the suction port 27 to fill the main body 21 with the oil 1, but the present invention is not limited to this. For example, it is good also as a structure which fills a fluid with the inside of a main body by supplying a fluid to the discharge port of a fluid pump.

In the present embodiment, the suction port 27 and the discharge port 28 are closed by the stoppers 141 and 142, but the present invention is not limited to this.
For example, as shown in FIG. 7, an opening / closing valve 151 is provided in the middle of the pressure feeding pipe 132 and an opening / closing valve 152 is provided in the middle of the return pipe 133, and the opening / closing valve 151 and the opening / closing valve 152 are closed. The outlet 28 may be closed. In this case, the on-off valve 151 and the on-off valve 152 correspond to an embodiment of the closing member according to the present invention.

As described above, the first embodiment of the fluid pump assembling method according to the present invention is as follows.
A main body 21 in which a suction port 27 and a discharge port 28 are formed and a pump shaft 24 rotatably supported by the main body 21 are provided, and the oil 1 sucked from the suction port 27 is rotated by the rotation of the pump shaft 24. A fluid pump assembling method for assembling the oil pump 20 discharged from the pump 28 and the pump gear 30 for transmitting the rotational driving force to the pump shaft 24 to the crankcase 10;
A fluid pump fixing step S1100 for fixing the oil pump 20 to the crankcase 10;
A fluid filling step S1200 for filling the inside of the main body 21 with the oil 1 by supplying the oil 1 to the suction port 27;
A closing step S1300 for closing the suction port 27 and the discharge port 28 in a state where the oil 21 is filled in the main body 21;
A fitting step S1400 for fitting the pump gear 30 to the pump shaft 24 in a relatively non-rotatable manner;
It comprises.
This configuration has the following advantages.
That is, since the rotation of the pump shaft 24 is restricted by the oil 1 enclosed in the main body 21, the pump gear 30 can be easily fitted to the pump shaft 24. As a result, the oil pump 20 and the pump gear 30 can be connected to each other. It can be easily assembled to the crankcase 10.

  Below, the apparatus structure of the assembly apparatus 200 which is 2nd embodiment of the fluid pump assembly apparatus based on this invention is demonstrated using FIGS. 8-10.

An assembling apparatus 200 shown in FIG. 8 is an apparatus for assembling the oil pump 20 and the pump gear 30 to the crankcase 10.
The assembling apparatus 200 mainly includes a pump 210, an oil pan 220, a suction pipe 231, a pressure feed pipe 232, a return pipe 233, and a plug 242.
The oil pan 220, the suction pipe 231, the pressure feed pipe 232, and the return pipe 233 have substantially the same configuration as the oil pan 120, the suction pipe 131, the pressure feed pipe 132, and the return pipe 133 in the assembling apparatus 100 shown in FIG. The description will be omitted.

The pump 210 is an embodiment of the fluid filling unit according to the present invention.
The pump 210 of this embodiment is a so-called vane pump, and has a suction port 211 and a discharge port 212. The pump 210 pumps the oil 1 by discharging the oil 1 sucked from the suction port 211 from the discharge port 212.
The combination of the pump 210 and the stopper 242 is an embodiment of the pressure applying unit according to the present invention, and the oil 1 filled in the main body 21 is transferred to the oil 1 without moving to the outside of the main body 21. Apply pressure.
As described above, the pump 210 according to the present embodiment has both the function as the fluid filling unit according to the present invention and the function as a part of the pressure applying unit according to the present invention.

  The pump 210 of the present embodiment is a vane pump, but the fluid filling unit and the pressure applying unit according to the present invention are not limited to this. For example, other types of pumps such as a piston pump may be used as (a part of) the fluid filling part and the fluid filling part according to the present invention.

  The plug 242 closes the discharge port 28 in a state in which the oil 21 is filled in the main body 21.

Below, 2nd embodiment of the fluid pump assembly | attachment method which concerns on this invention is described using FIGS. 8-12.
The second embodiment of the fluid pump assembling method according to the present invention is a “method of assembling the oil pump 20 and the pump gear 30 to the crankcase 10 using the assembling apparatus 200”. As shown in FIG. 12, the fluid pump fixing step S2100, It includes a fluid filling step S2200, a pressure applying step S2300, and a fitting step S2400.

The fluid pump fixing step S2100 is a step of fixing the oil pump 20 to the crankcase 10.
In the fluid pump fixing step S2100, the following operations (21-1) to (21-3) are sequentially performed (see FIG. 8).
(21-1) An operator connects the other end of the pressure feeding pipe 232 to the end of the suction side path 11.
(21-2) An operator connects one end of the return pipe 233 to the end of the discharge side path 12.
(21-3) An operator fixes the oil pump 20 to the crankcase 10.
The order of the operations (21-1) to (21-3) can be interchanged.
In the present embodiment, the worker performs the above-described (21-1) to (21-3) manually, but these operations can be appropriately automated (mechanicalized).
When the fluid pump fixing step S2100 is completed, the process proceeds to the fluid filling step S2200.

The fluid filling step S <b> 2200 is a step for filling the oil inside the main body 21 by supplying the oil 1 to the suction port 27.
In the fluid filling step S2200, the operator operates the pump 210.
As shown in FIG. 9, when the pump 210 is operated, the oil 1 stored in the oil pan 220 is sucked into the pump 210 from the suction port 211 through the suction pipe 231.
The oil 1 sucked into the pump 210 is discharged from the discharge port 212, is pumped through the pressure feed pipe 232 and the suction side path 11, and is supplied to the suction port 27 of the oil pump 20.
The oil 1 supplied to the suction port 27 of the oil pump 20 is surrounded by the inside of the main body 21 of the oil pump 20 (in this embodiment, the upper surface of the base 21a, the lower surface of the cover 21b, and the inner peripheral surface of the internal gear 22). And reaches the discharge port 28 of the oil pump 20. At this time, the pump shaft 24 rotates.
The oil 1 that has reached the discharge port 28 of the oil pump 20 is returned to the oil pan 220 through the discharge port 28, the discharge side path 12, and the return pipe 233.
Thus, the pump 210 fills the inside of the main body 21 with the oil 1 by supplying the oil 1 to the suction port 27 of the oil pump 20 fixed to the crankcase 10.
When the fluid filling step S2200 is completed, the process proceeds to the pressure applying step S2300.

The pressure application step S <b> 2300 is a step of applying pressure to the oil 1 in a state where the oil 1 filled in the main body 21 does not move to the outside of the main body 21.
In the pressure application step S2300, the following operations (23-1) to (23-3) are sequentially performed (see FIG. 10).
(23-1) The operator stops the pump 210.
(23-2) An operator removes one end of the return pipe 233 from the end of the discharge side passage 12 in a state where the oil is filled in the main body 21, and a plug 242 is fitted to the end of the discharge side passage 12. To do.
(23-3) The operator operates the pump 210 again.

When the operations (23-1) to (23-3) are performed, the state in which the oil 1 filled in the main body 21 is enclosed (the oil 1 filled in the main body 21 is in the inlet 27 and The pump shaft 24 is restricted from rotating by the oil 1 filled in the main body 21.
Further, the oil 1 filled in the main body 21 is given pressure by the pump 210, and the seal ring 25 is elastically deformed by the pressure, and the seal ring 25 is in close contact with the main body 21 and the pump shaft 24. As a result, the rotation of the pump shaft 24 is more firmly regulated.
If pressure application process S2300 is complete | finished, it will transfer to fitting process S2400.

The fitting step S2400 is a step of fitting the pump gear 30 to the pump shaft 24 so as not to be relatively rotatable.
In the fitting step S2400, the following operations (24-1) to (24-2) are sequentially performed (see FIG. 11).
(24-1) An operator attaches the bearing 40 to the crankcase 10.
(24-2) An operator fits the pump gear 30 on the pump shaft 24 and pivotally supports the crankcase 10 via the bearing 40.

In (24-2), the operator is formed at the upper end of the pump shaft 24 by rotating the pump gear 30 while bringing the end of the fitting hole 31 of the pump gear 30 into contact with the upper end of the pump shaft 24. The pair of engaging surfaces 24 a and 24 a and the engaging surfaces 31 a and 31 a formed on the inner peripheral surface of the fitting hole 31 are in contact with each other, and the upper end portion of the pump shaft 24 is fitted into the fitting hole 31. Let
At this time, the pump shaft 24 rotates together with the pump gear 30 because the state in which the rotation of the pump shaft 24 is firmly regulated by the oil 1 filled in the main body 21 in the previous pressure application step S2300 is maintained. It is possible to easily fit the upper end portion of the pump shaft 24 into the fitting hole 31.

As described above, the assembling apparatus 200 is
A main body 21 having a suction port 27 and a discharge port 28; a pump shaft 24 rotatably supported on the main body 21; and a seal ring 25 disposed between the main body 21 and the pump shaft 24. By rotating 24, oil 1 sucked from the suction port 27 is discharged from the discharge port 28 and pumped, and the seal ring 25 is elastically deformed by the pressure of the oil 1 sucked from the suction port 27, so that the main body 21 and the pump shaft 24 are pumped. A fluid pump assembling device for assembling the oil pump 20 in close contact with the pump case 30 and a pump gear 30 for transmitting a rotational driving force to the pump shaft 24 to the crankcase 10;
A pump 210 that fills the inside of the main body 21 with the oil 1 by supplying the oil 1 to the suction port 27 of the oil pump 20 fixed to the crankcase 10;
A pressure applying unit that applies pressure to the oil 1 in a state where the oil 1 filled in the main unit 21 does not move to the outside of the main unit 21 (a combination of the pump 210 and the plug 242 corresponds to the pressure applying unit);
It comprises.
This configuration has the following advantages.
That is, since the rotation of the pump shaft 24 is firmly regulated by the oil 1 enclosed in the main body 21, the pump gear 30 can be easily fitted to the pump shaft 24. As a result, the oil pump 20 and the pump gear can be fitted. 30 can be easily assembled to the crankcase 10.

In the present embodiment, the discharge port 28 is closed by the stopper 242, but the present invention is not limited to this.
For example, as shown in FIG. 13, an opening / closing valve 252 may be provided in the middle of the return pipe 233 and the discharge port 28 may be closed by closing the opening / closing valve 252. In this case, a combination of the pump 210 and the on-off valve 252 corresponds to an embodiment of the pressure applying member according to the present invention.

As described above, the second embodiment of the fluid pump assembling method according to the present invention is as follows.
A main body 21 having a suction port 27 and a discharge port 28; a pump shaft 24 rotatably supported on the main body 21; and a seal ring 25 disposed between the main body 21 and the pump shaft 24. By rotating 24, oil 1 sucked from the suction port 27 is discharged from the discharge port 28 and pumped, and the seal ring 25 is elastically deformed by the pressure of the oil 1 sucked from the suction port 27, so that the main body 21 and the pump shaft 24 are pumped. A fluid pump assembling method for assembling the oil pump 20 in close contact with the pump case 30 and a pump gear 30 for transmitting a rotational driving force to the pump shaft 24 to the crankcase 10,
Fluid pump fixing step S2100 for fixing the oil pump 20 to the crankcase 10;
A fluid filling step S2200 for filling the inside of the main body 21 with the oil 1 by supplying the oil 1 to the suction port 27;
A pressure applying step S2300 for applying pressure to the oil 1 in a state where the oil 1 filled in the main body 21 does not move to the outside of the main body 21;
A fitting step S2400 for fitting the pump gear 30 to the pump shaft 24 so as not to be relatively rotatable;
It comprises.
This configuration has the following advantages.
That is, since the rotation of the pump shaft 24 is firmly regulated by the oil 1 enclosed in the main body 21, the pump gear 30 can be easily fitted to the pump shaft 24. As a result, the oil pump 20 and the pump gear can be fitted. 30 can be easily assembled to the crankcase 10.

  Below, the apparatus structure of the assembly apparatus 300 which is 3rd embodiment of the fluid pump assembly apparatus based on this invention is demonstrated using FIG.

An assembling apparatus 300 shown in FIG. 14 is an apparatus for assembling the oil pump 20 and the pump gear 30 to the crankcase 10.
The assembling apparatus 300 mainly includes a pump 310, an oil pan 320, a suction pipe 331, a pressure feed pipe 332 and a return pipe 333.
The oil pan 320, the suction pipe 331, the pressure feed pipe 332, and the return pipe 333 have substantially the same configurations as the oil pan 120, the suction pipe 131, the pressure feed pipe 132, and the return pipe 133 in the assembling apparatus 100 shown in FIG. The description will be omitted.

The pump 310 is an embodiment of the shaft rotating unit according to the present invention.
The pump 310 of this embodiment is a so-called vane pump, and has a suction port 311 and a discharge port 312. The pump 310 pumps the oil 1 by discharging the oil 1 sucked from the suction port 311 from the discharge port 312.

  Although the pump 310 of this embodiment is a vane pump, the shaft rotation part which concerns on this invention is not limited to this. For example, another type of pump such as a piston pump may be used as the shaft rotating portion according to the present invention.

Below, 3rd embodiment of the fluid pump assembly | attachment method which concerns on this invention is described using FIGS. 14-17.
The third embodiment of the fluid pump assembling method according to the present invention is a “method of assembling the oil pump 20 and the pump gear 30 to the crankcase 10 using the assembling apparatus 300”. As shown in FIG. 17, the fluid pump fixing step S3100 and A fitting step S3200 is provided.

The fluid pump fixing step S3100 is a step of fixing the oil pump 20 to the crankcase 10.
In the fluid pump fixing step S3100, the following operations (31-1) to (31-3) are performed in order (see FIG. 14).
(31-1) An operator connects the other end of the pressure feeding pipe 332 to the end of the suction side path 11.
(31-2) An operator connects one end of the return pipe 333 to the end of the discharge side path 12.
(31-3) An operator fixes the oil pump 20 to the crankcase 10.
The order of the operations (31-1) to (31-3) can be interchanged.
In the present embodiment, the worker performs the above (31-1) to (31-3) manually, but these operations can be appropriately automated (mechanicalized).
When the fluid pump fixing step S3100 is completed, the process proceeds to the fitting step S3200.

The fitting step S3200 is a step of fitting the pump gear 30 to the pump shaft 24 so as not to be relatively rotatable.
In the fitting step S3200, the following operations (34-1) to (34-3) are sequentially performed (see FIGS. 15 and 16).
(34-1) An operator attaches the bearing 40 to the crankcase 10.
(34-2) The operator operates the pump 310.
(34-3) An operator fits the pump gear 30 on the pump shaft 24 and pivotally supports the crankcase 10 via the bearing 40.

When the pump 310 is operated in (34-2), the oil 1 stored in the oil pan 320 is sucked into the pump 310 from the suction port 311 through the suction pipe 331.
The oil 1 sucked into the pump 310 is discharged from the discharge port 312, is pumped through the pressure feed pipe 332 and the suction side path 11, and is supplied to the suction port 27 of the oil pump 20.
The oil 1 supplied to the suction port 27 of the oil pump 20 is filled in the main body 21 of the oil pump 20 and reaches the discharge port 28 of the oil pump 20. At this time, the pump shaft 24 rotates.
The oil 1 that has reached the discharge port 28 of the oil pump 20 is returned to the oil pan 320 through the discharge port 28, the discharge side path 12, and the return pipe 333.
In this way, the pump 310 rotates the pump shaft 24 by supplying the oil 1 to the suction port 27 of the oil pump 20 fixed to the crankcase 10.

In (34-3), an operator presses the end of the fitting hole 31 of the pump gear 30 against the upper end of the pump shaft 24 while holding the pump gear 30 by hand and holding it unrotatable.
At this time, since the pump shaft 24 continues to rotate from (34-2), the operator can hold the state where the end of the fitting hole 31 of the pump gear 30 is pressed against the upper end of the pump shaft 24 for a while. For example, when the pair of engaging surfaces 24a and 24a formed on the upper end portion of the pump shaft 24 and the engaging surfaces 31a and 31a formed on the inner peripheral surface of the fitting hole 31 become parallel to each other, the pump gear 30 is used. Is fitted to the pump shaft 24.
When the operator manually fits the pump gear 30 to the pump shaft 24, the rotational speed of the pump shaft 24 is preferably a gradual speed of about 1 rpm, for example.

As described above, the assembling apparatus 300 is
A main body 21 in which a suction port 27 and a discharge port 28 are formed and a pump shaft 24 rotatably supported by the main body 21 are provided, and the oil 1 sucked from the suction port 27 is rotated by the rotation of the pump shaft 24. A fluid pump assembling device for assembling the oil pump 20 discharged from the pump 28 and the pump gear 30 for transmitting the rotational driving force to the pump shaft 24 to the crankcase 10;
A pump 310 that rotates the pump shaft 24 by supplying the oil 1 to the suction port 27 of the oil pump 20 fixed to the crankcase 10 is provided.
This configuration has the following advantages.
That is, since the pump shaft 24 is rotated by the oil 1 supplied to the inside of the main body 21, the phase in the rotational direction of the pump gear 30 and the pump shaft 24 is naturally maintained as long as the pump gear 30 is pressed against the pump shaft 24 for a while. Therefore, the pump gear 30 can be easily fitted to the pump shaft 24. As a result, the oil pump 20 and the pump gear 30 can be easily assembled to the crankcase 10.

As described above, the third embodiment of the fluid pump assembling method according to the present invention is as follows.
A main body 21 in which a suction port 27 and a discharge port 28 are formed and a pump shaft 24 rotatably supported by the main body 21 are provided, and the oil 1 sucked from the suction port 27 is rotated by the rotation of the pump shaft 24. A fluid pump assembling method for assembling the oil pump 20 discharged from the pump 28 and the pump gear 30 for transmitting the rotational driving force to the pump shaft 24 to the crankcase 10;
Fluid pump fixing step S3100 for fixing the oil pump 20 to the crankcase 10;
A fitting step S3200 for rotating the pump shaft 24 by supplying the oil 1 to the suction port 27 and fitting the pump gear 30 to the pump shaft 24 so as not to be relatively rotatable by pressing the pump gear 30 against the rotating pump shaft 24. When,
It comprises.
This configuration has the following advantages.
That is, since the pump shaft 24 is rotated by the oil 1 supplied to the inside of the main body 21, the phase in the rotational direction of the pump gear 30 and the pump shaft 24 is naturally maintained as long as the pump gear 30 is pressed against the pump shaft 24 for a while. Therefore, the pump gear 30 can be easily fitted to the pump shaft 24. As a result, the oil pump 20 and the pump gear 30 can be easily assembled to the crankcase 10.

Side surface sectional drawing which shows the state which assembled | attached the oil pump and the pump gear to the crankcase. Side surface sectional drawing which shows 1st embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of a fluid pump fixing process ending. Side surface sectional drawing which shows 1st embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of a fluid filling process being complete | finished. Side surface sectional drawing which shows 1st embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of the obstruction | occlusion process being complete | finished. Side surface sectional drawing which shows 1st embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention in the time of a fitting process being complete | finished. The flowchart which shows 1st embodiment of the fluid pump assembly | attachment method which concerns on this invention. Side surface sectional drawing which shows another embodiment of 1st embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention. Side surface sectional drawing which shows 2nd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of a fluid pump fixing process ending. Side surface sectional drawing which shows 2nd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of a fluid filling process being complete | finished. Side surface sectional drawing which shows 2nd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention in the time of a pressure provision process being complete | finished. Side surface sectional drawing which shows 2nd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of a fitting process being complete | finished. The flowchart which shows 2nd embodiment of the fluid pump assembly | attachment method which concerns on this invention. Side surface sectional drawing which shows another embodiment of 2nd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention. Side surface sectional drawing which shows 3rd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention at the time of a fluid pump fixing process being complete | finished. Side surface sectional drawing which shows 3rd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention in the middle of the fitting process. Side surface sectional drawing which shows 3rd embodiment of the fluid pump assembly | attachment apparatus which concerns on this invention in the time of a fitting process being complete | finished. The flowchart which shows 3rd embodiment of the fluid pump assembly | attachment method which concerns on this invention.

Explanation of symbols

1 Oil (fluid)
10 Crankcase (fixed object)
20 Oil pump (fluid pump)
21 Body 24 Pump shaft 27 Suction port 28 Discharge port 30 Pump gear (transmission member)
100 assembly device (fluid pump assembly device)
110 Pump (fluid filling part)
141 stopper (blocking part)
142 stopper (blocking part)

Claims (6)

A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump assembling device for assembling a fluid pump for pumping and a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid filling unit that fills the inside of the main body with the fluid by supplying fluid to either the suction port or the discharge port of the fluid pump fixed to the fixed object;
A closing portion for closing the suction port and the discharge port in a state where the fluid is filled in the main body;
A fluid pump assembling apparatus comprising: A main body having a suction port and a discharge port; a pump shaft rotatably supported by the main body; and a seal member disposed between the main body and the pump shaft, wherein the pump shaft rotates. A fluid pump that discharges and pumps oil sucked from the suction port through the discharge port, and elastically deforms the seal member due to the pressure of the oil sucked from the suction port and closely contacts the main body and the pump shaft; and A fluid pump assembling device for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid filling unit that fills the fluid pump main body with the fluid by supplying fluid to either the suction port or the discharge port of the fluid pump fixed to the fixed object;
A pressure applying unit that applies pressure to the fluid in a state where the fluid filled inside the main body does not move to the outside of the main body;
A fluid pump assembling apparatus comprising: A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump assembling device for assembling a fluid pump for pumping and a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump assembling apparatus comprising a shaft rotating section that rotates the pump shaft by supplying fluid to either an inlet or an outlet of a fluid pump fixed to the fixed object. A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump for pumping, and a fluid pump assembling method for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump fixing step of fixing the fluid pump to the fixed object;
A fluid filling step of filling the fluid into the main body by supplying fluid to either the suction port or the discharge port;
A closing step of closing the suction port and the discharge port in a state where the fluid is filled in the body;
A fitting step of fitting the transmission member to the pump shaft so as not to be relatively rotatable;
A fluid pump assembly method comprising: A main body having a suction port and a discharge port; a pump shaft rotatably supported by the main body; and a seal member disposed between the main body and the pump shaft, wherein the pump shaft rotates. A fluid pump that discharges and pumps oil sucked from the suction port through the discharge port, and elastically deforms the seal member due to the pressure of the oil sucked from the suction port and closely contacts the main body and the pump shaft; and A fluid pump assembling method for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump fixing step of fixing the fluid pump to the fixed object;
A fluid filling step of filling the fluid inside the body of the fluid pump by supplying fluid to either the suction port or the discharge port;
A pressure applying step for applying pressure to the fluid in a state where the fluid filled in the main body does not move to the outside of the main body;
A fitting step of fitting the transmission member to the pump shaft so as not to be relatively rotatable;
A fluid pump assembly method comprising: A main body having a suction port and a discharge port and a pump shaft rotatably supported by the main body are provided, and the pump shaft rotates to discharge oil sucked from the suction port from the discharge port. A fluid pump for pumping, and a fluid pump assembling method for assembling a transmission member for transmitting a rotational driving force to the pump shaft to a fixed object,
A fluid pump fixing step of fixing the fluid pump to the fixed object;
The pump shaft is rotated by supplying fluid to either the suction port or the discharge port, and the transmission member is pressed against the rotating pump shaft so that the transmission member cannot be rotated relative to the pump shaft. A fitting process for fitting;
A fluid pump assembly method comprising:

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