KR101174467B1

KR101174467B1 - Manual and automatic oil pump module

Info

Publication number: KR101174467B1
Application number: KR20100017971A
Authority: KR
Inventors: 유병반
Original assignee: 유병반
Priority date: 2010-02-26
Filing date: 2010-02-26
Publication date: 2012-08-24
Also published as: KR20110098383A

Abstract

Manual and automatic oil pump module according to an embodiment of the present invention, the main body is provided with a tank for receiving the hydraulic oil, the manual pump for sucking or discharging the above-mentioned operating oil by switching the inclined rotation to the lifting operation, and by the driving force Eccentric rotation between one side and the other side of the inner space in accordance with the expansion and contraction of the automatic pump for sucking or discharging the above-mentioned hydraulic fluid, between the one side connected to the above-mentioned manual pump and the aforementioned automatic pump in one point and the other side connected to the tank described above In the reciprocating movement in the one direction or the other direction to select the above-mentioned hydraulic oil to include a direction switching unit for inhaling or discharging and blocking the reverse flow of the above-mentioned hydraulic oil, the above-described manual pump and the above-mentioned automatic pump and the above-mentioned direction switching unit It is a structure that is integrally mounted on the main body.

Description

Manual and Automatic Combined Oil Pump Module {MANUAL AND AUTOMATIC OIL PUMP MODULE}

One embodiment of the present invention relates to a manual and automatic oil pump module, and more particularly, modularization of the product according to the structure in which the manual pump and the automatic pump and the direction switching unit is integrally installed in the main body provided with a tank for receiving hydraulic oil And it relates to a manual and automatic oil pump module that can be selectively implemented through the compact implementation.

A hydraulic device is a device in which a hydraulic fluid, which is an incompressible fluid, is provided with a component for applying pressure for implementing a motion change to an actuator such as an arm of an excavator and a boom of a crane.

Here, in order to change the operation and return to the home position of the aforementioned actuator, the hydraulic pressure must be applied to the actuator while continuously supplying and circulating the hydraulic oil, so that an oil pump for applying the hydraulic pressure is used.

In this case, the above-described oil pump can supply and circulate the hydraulic oil to the actuator manually or automatically, and is generally a trend to employ an automatic oil pump.

However, it is necessary to use a manual oil pump when the operator needs to identify the malfunction or inspection point while manually adjusting the operation of the actuator.

Therefore, the development of a device that can be implemented by switching the operation conversion of the actuator manually or automatically will be urgently needed.

One embodiment of the present invention relates to a manual and automatic oil pump module to maximize the efficiency of the installation space through the modularization and compactness of the product.

In addition, an embodiment of the present invention relates to a manual and automatic combined oil pump module to maximize the versatility of the drive system capable of manual or automatic switching.

In addition, one embodiment of the present invention relates to a manual and automatic oil pump module that is easy to install in the existing installation and also easy to replace and repair.

In the manual and automatic oil pump module according to an embodiment of the present invention, the hydraulic fluid described above according to the expansion of the internal space while switching the repeatedly rotating inclined to the reciprocating operation of the main body provided with a tank for receiving the hydraulic oil, and repeatedly And a manual pump mounted to the main body to discharge the hydraulic fluid according to the reduction of the aforementioned internal space, and when one side of the internal space expands while being rotated forward and backward with the driving force, the other side of the internal space is reduced. If the suction of the above-mentioned hydraulic oil and the one side of the above-described internal space is reduced, the automatic pump radially entering and exiting in the above-mentioned main body so as to discharge the above-mentioned operating oil as the other side of the above-mentioned internal space expands, and the aforementioned manual Reciprocating between one side connected to the pump and the aforementioned automatic pump at one point and the other side connected to the tank described above Selecting the above-mentioned hydraulic fluid in one direction or the other while moving, including the direction switching unit for inhaling or discharging and blocking the reverse flow of the hydraulic oil, the above-described manual pump and the above-described automatic pump and the above-mentioned direction switching unit is integral to the body It is a structure that is mounted.

As described above, the manual and automatic oil pump module according to an embodiment of the present invention has the following advantages.

First of all, according to the structure in which the manual pump, the automatic pump, and the directional switch are integrally installed in the main body provided with a tank for accommodating the hydraulic fluid, the modularity and compactness of the product can be realized, thereby improving the installation space efficiency.

In addition, since the manual and automatic oil pump module according to an embodiment of the present invention is installed on a pipe facing the hydraulic cylinder side to an existing product, it can be used immediately, and it is easy to install and the failure and inspection points due to the structural characteristics of the modular product. Can be made quickly and intuitively.

In addition, since the hydraulic cylinder can be selectively operated by a manual pump or an automatic pump, it is possible to actively cope with various working environments, and in particular, in an emergency situation in which it is difficult to supply sufficient power, it may be possible to implement the operation by the manual pump.

1 is a hydraulic circuit diagram showing the overall configuration of the manual and automatic oil pump module according to an embodiment of the present invention
2 is a side conceptual view of a manual and automatic combined oil pump module according to an embodiment of the present invention
Figure 3 is a cross-sectional conceptual view showing the overall coupling relationship between the manual and automatic oil pump module according to an embodiment of the present invention
Figure 4 is a cross-sectional conceptual view showing the overall structure of the manual pump which is the main part of the manual and automatic oil pump module according to an embodiment of the present invention
5 and 6 is a conceptual diagram showing the operating state of the turning hole and the hatch of the manual pump which is the main part of the manual and automatic oil pump module according to an embodiment of the present invention as viewed from the point A of FIG.
Figure 7 is a bottom conceptual view showing the overall structure of the automatic pump which is the main part of the manual and automatic oil pump module according to an embodiment of the present invention as viewed from the point B of FIG.
8 is a cross-sectional conceptual view showing the overall structure of the direction switching unit that is the main part of the manual and automatic oil pump module according to an embodiment of the present invention
9 and 10 are cross-sectional conceptual view showing the operating state of the manual pump which is the main part of the manual and automatic oil pump module according to an embodiment of the present invention
11 to 13 is a conceptual diagram showing the operating state of the automatic pump which is the main part of the manual and automatic oil pump module according to an embodiment of the present invention
14 and 15 is a cross-sectional conceptual view showing the operating state of the direction switching unit that is the main part of the manual and automatic oil pump module according to an embodiment of the present invention

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

This is for the purpose of describing the present invention in detail so that those skilled in the art can easily practice the present invention, and thus, the technical spirit and scope of the present invention are not limited thereto.

In addition, the sizes and shapes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation, and the terms defined specifically in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user, operator And the definitions of these terms should be based on the contents throughout this specification.

1 is a hydraulic circuit diagram showing the overall configuration of the manual and automatic oil pump module according to an embodiment of the present invention, Figure 2 is a side conceptual view of the manual and automatic oil pump module according to an embodiment of the present invention, 3 is a cross-sectional conceptual view showing the overall coupling relationship between the manual and automatic oil pump module according to an embodiment of the present invention.

Manual and automatic combined oil pump module according to an embodiment of the present invention, the manual pump 200, the automatic pump 300 and the direction switching unit 400 is integrally mounted to the main body 100 as shown in Figs. It can be seen that the modular structure.

The manual pump 200 or the automatic pump 300 may apply hydraulic pressure to one port 910 or the other port 920 of the hydraulic cylinder 900 by the direction switching unit 400.

The main body 100 has a block shape in which a tank 500 for receiving hydraulic oil is provided, and is intended to provide a space in which the manual pump 200, the automatic pump 300, and the direction switching unit 400, which will be described later, are mounted.

The manual pump 200 is mounted on the main body 100 as shown in FIG. 3, and the hydraulic oil is sucked in accordance with the expansion of the internal space and the hydraulic oil is reduced in accordance with the expansion of the internal space while the operation of repeatedly inclining the rotation is reciprocated. The hydraulic pressure is applied to the hydraulic cylinder 900 by performing a series of operations by which a user discharges.

The automatic pump 300 is radially in and out of the main body 100, as shown in Figure 3 rotates eccentrically, when one side of the inner space is expanded while being rotated in one direction under the driving force to suck the hydraulic fluid as the other side of the inner space is reduced When one side of the inner space is reduced, the hydraulic pressure is applied to the hydraulic cylinder 900 by automatically performing a series of operations for discharging hydraulic fluid as the other side of the inner space expands.

Direction switching unit 400 selects the hydraulic fluid in one or the other direction while reciprocating between one side connected to the manual pump 200 and the automatic pump 300 and the other side connected to the tank 500 as shown in FIG. A series of actions of suction or discharge are carried out manually or automatically, and the back flow of the hydraulic oil is also blocked.

That is, the direction switching unit 400 applies hydraulic pressure only in one direction to one port 910 side of the hydraulic cylinder 900 or in the other direction to the other port 920 side.

The present invention can be applied by the embodiments as described above, and for the more detailed description will be described in detail the main parts of the present invention based on Figures 4 to 15.

For reference, refer to FIGS. 1 and 3 for the overall coupling and connection relationship of each component.

First, the main body 100 accommodates the hydraulic fluid as described above, and provides a space for integrally accommodating the manual pump 200, the automatic pump 300, and the direction switching unit 400, as shown in FIG. 4. 600 and the discharge passage 700 are formed.

The suction passage 600 is connected from the tank 500 to interconnect the suction side of the manual pump 200 and the suction side of the automatic pump 300, more specifically, the first connection passage 601 with the tank 500. ), The suction side of the manual pump 200 is connected by the second connection passage 602, and the suction side of the automatic pump 300 by the third connection passage 603, respectively.

The discharge passage 700 is connected to the discharge side of the manual pump 200 and the discharge side of the automatic pump 300 by being connected to the discharge passage 700 from the tank 500 through the communication passage 701 separately, Preferably, the discharge side of the manual pump 200 is connected to the second connection passage 602 by the fourth connection passage 702, and the discharge side of the automatic pump 300 is connected by the fifth connection passage 703, respectively. Connected.

Here, the discharge passage 700, more specifically the aforementioned communication passage 701 is connected to one side of the direction switching unit 400, that is, the inlet 401.

At this time, the suction passage 600 and the discharge passage 700 to the first block 610, the second block 720 and the third block 730 to selectively block the flow of the hydraulic fluid, respectively It is desirable to provide.

That is, the first blocking port 610 is mounted on one side of the suction passage 600 connected to the second connection passage 602 toward the suction side of the manual pump 200 to suck the manual pump 200 from the tank 500. The reciprocating space 612, the ball 614, and the spring 616 are selectively included to selectively block or release the flow of the hydraulic oil toward the side.

The reciprocating space 612 is a space portion provided at one side of the suction passage 600, and the ball 614 is built in the reciprocating space 612 to reciprocate along the forming direction of the suction passage 600 and according to the flow direction of the hydraulic oil. The suction passage 600 is opened and closed by hydraulic pressure, and the spring 616 is embedded in the reciprocating space 612 to support the ball 614 in its original position while elastically supporting the ball 614.

Here, the first blocking port 610 is a state in which one side of the suction passage 600 is blocked so that hydraulic fluid does not flow to the manual pump 600 side and the second blocking port 720 side by the usual spring 616. .

The second blocking hole 710 is mounted on one side of the discharge passage 700 communicating with the fourth connection passage 702 through the first blocking opening 610 on the suction passage 600 to suction the manual pump 200. It selectively includes a reciprocating space 712, a ball 714, and a spring 716 to selectively block the flow of the hydraulic fluid toward the side.

The reciprocating space 712 is a space portion provided at one side of the discharge passage 700, and the ball 714 is built in the reciprocating space 712 to reciprocate along the direction of formation of the discharge passage 700 and according to the flow direction of the hydraulic oil. One side of the discharge passage 700 is opened and closed by hydraulic pressure, and the spring 716 is embedded in the reciprocating space 712 to support the ball 714 in its original position while elastically supporting the ball 714.

In this case, the second blocking hole 710 is opposite to the first blocking hole 610 and the blocking direction.

At this time, the second blocking port 710 is a state in which one side of the discharge passage 700 is blocked so that hydraulic fluid does not flow to the first blocking port 610 and the manual pump 200 by the usual spring 716. .

The third blocking port 720 is mounted on the other side of the discharge passage 700 to selectively block the flow of the hydraulic oil from the discharge side of the automatic pump 300 toward the direction switching unit 400 side through the fifth connection passage 703. And a reciprocating space 722, a ball 724, and a spring 726.

The reciprocating space 722 is a space portion provided on the other side of the discharge passage 700, the ball 724 is built in the reciprocating space 722 and reciprocates along the direction of formation of the discharge passage 700 and according to the flow direction of the hydraulic oil The other side of the discharge passage 700 is opened and closed by hydraulic pressure, and the spring 726 is embedded in the reciprocating space 722 to assist the ball 724 in its original position while elastically supporting the ball 724.

Here, the third blocking port 720 is in a state of blocking the other side of the discharge passage 700 so that the hydraulic fluid does not flow to the lead-out side of the automatic pump 300 by the usual spring 726.

Therefore, when the first blocking port 610 sucks the hydraulic fluid into the manual pump 200, that is, the hydraulic oil flows into the suction passage 600 through the first connection passage 601 to the suction side of the manual pump 200. When the pressure is applied to the first blocking port 610, the first blocking port 610 opens the flow path, and the working oil moves to the suction side of the manual pump 200 through the second connecting passage 602.

In addition, the first shut-off port 610 when the hydraulic fluid is discharged to the direction switching unit 400 side by the manual pump 200, that is, the hydraulic fluid is discharged through the second connection passage 602 from the discharge side of the manual pump 200 4 when the connection passage 702 moves to the side, the first block 610 maintains a state of blocking one side of the suction passage 600, and the second block 710 receives the pressure of the hydraulic oil and discharges the passage 700. Open one side of.

The hydraulic oil is discharged to the inlet 401 side of the direction switching unit 400 through the communication passage 701 through the discharge passage 700.

In addition, when the hydraulic oil is sucked into the automatic pump 300, the pressure of the hydraulic oil applied to the first blocking port 610 is insignificant compared to the pressure of the hydraulic oil directed to the suction side of the automatic pump 300 through the suction passage 600. Therefore, while the blocking of the first blocking port 610 is maintained, the working oil is directed toward the automatic pump 300.

When the hydraulic oil is discharged to the automatic pump 300, the hydraulic oil pressurizes the third blocking port 720 from the fifth connection passage 703 to open the other side of the discharge passage 700, and the hydraulic oil discharges the discharge passage ( It is discharged to the inlet 401 side of the direction switching unit 400 through the communication passage 701 through the 700.

In this case, the hydraulic oil may apply pressure in a direction in which the spring 714 of the second blocking port 710 blocks one side of the discharge passage 700, so that the hydraulic fluid may continue to be discharged to the inlet 401.

In addition, a relief valve for reducing a part of the hydraulic oil to the tank 500 side when the pressure of the hydraulic oil is continuously applied to the end of the communication passage 701 from the discharge side of the manual pump 200 and the automatic pump 300 above the set pressure ( 800 is preferably mounted.

Meanwhile, the manual pump 200 sucks or discharges the hydraulic oil by a repetitive manual operation of the user while switching the inclined rotation to the lifting operation as described above, and includes a turning hole 210 and a lifting hole 220.

Rotating opening 210 is the support cylinder 211, the operation block 212, the contact roller (2) to the reciprocating movement of the other end is inclined with respect to one end that is mounted to the main body 100 to be forward, reverse rotation 213, an actuation piece 214, and a spring pin 216.

The support cylinder 211 is formed in one side of the tank 500 and is open in one side and has a hollow cylindrical shape communicating with the suction passage 600 and the discharge passage 700, respectively, and more specifically, the suction passage 600 The second connection passage 602 and the fourth connection passage 702 of the discharge passage 700.

The operation block 212 is coupled to the operating shaft 212 ′ which is penetrated through the open side of the support cylinder 211 and is rotated forward and reverse, and the operating piece 214 is an end of the operation block 212. Is coupled to the rotational movement in the support cylinder 211.

Here, the engaging portion of the operation block 212 and the operation piece 214 is mounted on the contact roller 213 which rotates integrally with the operation piece 214 is to be mounted on the end of the operation piece 214, the hatch 220 to be described later The pressure is applied to the second connection passage 602 while contacting when the 하 falls.

At this time, the contact roller 213 is preferably mounted somewhat eccentrically toward the operation block 212 side to implement the operation as described above.

Spring pin 216 is a structure that is elastically supported in the centrifugal direction to form a slit cut along the longitudinal direction of the outer circumferential surface formed in a cylindrical shape of the both ends penetrating (see the shape of Figures 5 and 6) as a whole.

The spring pin 216 is coupled through the end of the operating piece 214 and the end of the lifting hole 220 so that the lifting hole 220 to be described later is elevated so that the hydraulic oil is sucked or discharged to the direction switching unit 400 to be described later.

4 to 6, the spring pin 216 is fixed to the operating piece 214 in close contact with the structural characteristics, as shown in Figures 4 to 6, the hatch 220 through which the spring pin 216 is penetrated, that is, the moving rod 222 to be described later An end portion of the operation block 212 is preferably provided with a clearance space 215 having an inner diameter larger than that of the spring pin 216.

Here, the spring pin 216 is relatively thinner than the structure of the rotating hole 210, that is, the operation block 212, and the coupling of the bolt or nut that can interfere with the rotation of the operating piece 214 and It is suitable to be mounted at a location such as a coupling portion of the operation block 212.

At the end of the operation block 212, the lever 217 is mounted to rotate inclined with respect to the operation shaft 212 'and is disposed outside the main body 100 so that the user grips the operating shaft 212'. It can be rotated, the lifting hole 220 is mounted on the end of the operation piece 214 is the hydraulic fluid is sucked or discharged to the direction switching unit 400 side.

The lifting hole 220 is rotatably mounted at the other end of the rotation hole 210, that is, at the end of the operation piece 214, sucks the hydraulic oil of the tank 500 while moving in one direction, and moves the hydraulic oil while moving in the other direction. By discharging to the switching unit 400 side, it includes a moving cylinder 221 and a moving rod 222.

The movable cylinder 221 is a hollow space extending from the support cylinder 211 toward the suction passage 600 and the discharge passage 700, and the movable rod 222 is rotatably coupled to the end of the operation piece 214. And reciprocates while contacting the inner surface of the moving tube 221.

Here, when the end of the operating piece 214 moves to the tank 500 side as shown in FIG. 5, the moving rod 222 rises toward the operating block 212, and the hydraulic oil passes between the end of the moving rod 222 and the moving tube 221. Is sucked into the space.

At this time, the clearance space 215, as shown in Figure 5 the operating block 212 side inner peripheral surface of the spring pin 216 is fixed to the operating piece 214 to maintain a state in contact with the outer peripheral surface of the operation block 212 side. And, in this state, the moving rod 222 is drawn up by the operation piece 214.

In addition, when the end of the operating piece 214 moves to the suction passage 600 and the discharge passage 700 side as shown in Figure 6 while the moving rod 222 is lowered to the second connecting passage 602 side, the hydraulic fluid of the moving rod 222 It is discharged to the direction switching part 400 side from the space between the end part and the movable cylinder 221.

Here, the clearance space 215 maintains a state in which the inner peripheral surface of the second connection passage 602 side is in contact with the outer peripheral surface of the second connection passage 602 side of the spring pin 216, as shown in FIG. It can be seen that the contact roller 213 in conjunction with the pressing the end of the moving rod 222, in this state the moving rod 222 is lowered by the operating piece 214 and the contact roller 213.

Accordingly, the manual pump 200 may be understood to have a structure in which the suction side and the discharge shaft correspond to each other and communicate with the suction passage 600 and the discharge passage 700, respectively, based on structural and operational characteristics.

Here, it is preferable that the sealing member 223 is mounted on the outer surface of the end of the movable rod 222 to block the inflow of the hydraulic oil to the support cylinder 211, and the sealing member 223 contacts the inner surface of the movable cylinder 221. O-ring 225 for preventing the leakage of the hydraulic oil, and a backup ring 227 for supporting the O-ring 225.

At this time, the sealing member 223 is the second connecting passage of the movable rod 222 in consideration of the friction between the outer circumferential surface of the movable rod 222 and the inner circumferential surface of the movable cylinder 221 and the lifting direction of the movable rod 222 and the direction in which the contact pressure is applied. It is preferable to mount the O-ring 225 and the backup ring 227 sequentially from the end of the (602) side.

Meanwhile, the automatic pump 300 sucks or discharges the working oil while the inner spaces of one side and the other side expand or contract according to the eccentric rotation as described above. Referring to FIGS. It can be seen that the structure including the motor 320, the suction discharge conversion port 330.

The rotary ball 310 is axially coupled to one side of the main body 100 to rotate eccentrically includes a support cylinder 311, bearing block 312 and the eccentric shaft 314.

The driving motor 320 is coupled to the rotary sphere 310 and the drive shaft 324 to transfer the driving force to the rotary sphere (310).

The suction discharge conversion port 330 is radially mounted to the rotary hole 310 and in conjunction with the eccentric rotation of the rotary hole 310 to suck hydraulic fluid from the tank 500 to the suction passage 600 side or to the discharge passage 700 side. The hydraulic oil is discharged to include a bearing 332, a piston 334, and a locking ring 336.

The support cylinder 311 of the rotary ball 310 is provided on one side of the main body 100 to communicate with the third connection passage 603 of the suction passage 600 and the fifth connection passage 703 of the discharge passage 700, respectively. The hollow cylindrical shape, which will be described later, provides a space in which the suction discharge conversion hole 330 is mounted together with the bearing block 312 and the eccentric shaft 314.

The bearing block 312 is fixed on the support cylinder 311 toward one side of the suction passage 600 and the discharge passage 700 so that one side of the bearing block 312 is provided with a cylindrical rotating space 312 ′. Then, a flow groove 313 through which the hydraulic oil flows along the outer surface is formed.

Here, the bearing block 312 is coupled to the suction discharge conversion hole 330 which will be described later through the drive shaft 324 of the drive motor 320, and radially along the forming direction of the flow groove 313, In detail, a plurality of reciprocating paths 312 ″ are provided in the radial direction with respect to the drive shaft 324 to communicate with the rotation space 312 ′.

At this time, the piston 334 of the suction discharge conversion port 330 to be described later is reciprocated in the reciprocating path (312 ").

The eccentric shaft 314 is coupled to the drive shaft 324 of the drive motor 320 passing through the center of the bearing block 312 toward the suction passage 600 and the discharge passage 700 side, as described above Suction discharge conversion port 330 is mounted on the eccentric shaft (314).

The eccentric shaft 314 is a cylindrical solid shaft, and a portion engaged with the driving shaft 324 is biased to one side with respect to the central portion along the longitudinal direction and rotates eccentrically.

The drive motor 320 is provided with a drive shaft 324 at the end thereof is coupled to the eccentric shaft 314, and is fixed and supported by a fixing block 321 on the bearing block 312 mounted on the support cylinder 311.

The bearing 332 of the suction discharge conversion port 330 is mounted in a rolling contact along the outer circumferential surface of the eccentric shaft 314.

The piston 334 is disposed radially from the eccentric shaft 314, one end is in contact with the outer circumferential surface of the bearing 332, the other end is a plurality of reciprocating the reciprocating path 312 ", respectively, the rod 333 and the engaging body (333 ').

The reciprocating path 312 "communicates with the 3rd connection path 603 by the side of the suction path 600 via the suction port 301 of hydraulic fluid, respectively.

The support cylinder 311 is also provided with a discharge port 302 as a discharge path of the hydraulic oil discharged through the flow groove 313 with respect to the suction port 301, the discharge port 302 is the fifth connecting passage ( 703).

Here, the rod 333 is rod-shaped and reciprocates the reciprocating path 312 ", and the locking body 333 'is mounted at one end of the rod 333 and has an elliptical shape in cross section and has an eccentric shaft 314. ) Allows the inclined contact with the outer circumferential surface of the bearing 332 in accordance with the eccentric rotation of the), and is a three-dimensional shape of an egg as a whole.

The engaging ring 336 is pierced with the eccentric shaft 314 so that the outer circumferential surface is in contact with the inner circumferential surface of the bearing block 312 provided with the rotation space 312 ′ in connection with the rotation of the eccentric shaft 314 so as to rotate forward and backward. One end of the 334, that is, a space to be engaged with the locking body 333 ′ is formed, and includes a main ring 335 and a contact ring 335 ′.

The main ring 335 passes through the center of the eccentric shaft 314, and the contact ring 335 'extends toward the suction passage 600 and the discharge passage 700 along the edge of the main ring 335 and rotates. The inner circumferential surface of the bearing block 312 provided with the space 312 'contacts.

Accordingly, it can be seen that the locking ring 336 has a structure for accommodating the locking body 333 '.

The reciprocating paths 312 ″ communicate with the suction passages 600, respectively, as described above, and the flow grooves 313 of the bearing block 312 are formed in the discharge passages 700 between the plurality of reciprocating paths 312 ″. 5 is in communication with the connecting passage 703.

Here, the bearing block 312 is equipped with an O-ring 319 on the outer circumferential surface of the locking ring 336, that is, the contact ring 335 'along the inner circumferential surface where the rotation space 312' is provided, and thus the eccentric shaft 314. The friction ring that is generated while the engaging ring 336 in contact with the rotation of the bearing block 312 in contact with the rotation of the) can be reduced.

On the other hand, the direction switching unit 400, as described above for selecting the direction in which the hydraulic fluid flows to the side port 910 or the other port 920 side of the hydraulic cylinder 900 to suck or discharge and also to block the back flow of the hydraulic oil 8, the first switching unit 410 and the second switching unit 420 are included.

The first switching unit 410 is a switching passage 410 between the inlet 401 through which the hydraulic oil discharged from the manual pump 200 or the automatic pump 300 flows and the outlet 402 where the hydraulic oil returns to the tank 500 side. ') Including a first switching space 412 and the switching pipe 414.

Here, it can be seen that the inlet 401 is connected to the communication passage 701.

The first switching space 412 is provided with a cylindrical switching path 410 ′, and provides a space for the switching pipe 414 to reciprocate.

The switching pipe 414 is a pipe of both ends through which the flow path to the one port 910 or the other port 920 communicated with the first switching space 412 is selectively blocked while reciprocating the first switching space 412. .

The second switching unit 420 is branched on the switching flow passage 410 'and connected to one port 910 and the other port 920 of the hydraulic cylinder 900, respectively, a pair of branch flow passages 420' and 420 ". The second switching space 421, the piston rod 422, and the check valve 424 by changing the operating direction of the hydraulic cylinder 900 in conjunction with the reciprocation of the switching pipe 414 while reciprocating in the orthogonal direction. 424 ').

The switching tube 414 is always in communication with the outlet 402, and more particularly, the fixed tube 413 in full communication with the inlet 401 and the outlet 402 and the pair of branch passages 420 ′ and 420 ″. Reciprocating in contact with the inner circumferential surface, the end of the fixed tube 413 is coupled to the switching unit 430 to be described later.

Here, on the outer circumferential surface of the switching tube 414, opening and closing flanges protrude from positions corresponding to the pair of branch passages 420 'and 420 "so as to enable the above-described mechanism, and the branch passage 420 on the other side. A through hole 414 'is penetrated on the outer circumferential surface corresponding to "

At this time, the through hole 414 'allows the flow path to communicate with the hydraulic fluid to flow to the branch flow path 420 "of the other side when the branch flow path 420' of one side is blocked by the aforementioned flange.

Accordingly, the switching pipe 414 selectively communicates with the branch flow path 420 'on one side or the branch flow path 420 "on the other side by reciprocating the first switching space 412.

First, the second switching space 421 of the second switching unit 420 is formed in a direction orthogonal to the pair of branching passages 420 'and 420 ", and the pair of branching passages 420' and 420". A cylindrical space communicating with each other, the piston rod 422 reciprocates the second switching space 421 by the pressure direction of the hydraulic oil introduced from the inlet 401.

The piston rod 422 also serves to open a passage of the hydraulic oil returned from the other port 920 side when the hydraulic fluid flows to one side port 910 side.

Here, the piston rod 422 has a relatively small diameter of both ends selectively contacting the check valve 424, 424 'to be described later with respect to the central portion in contact with the inner peripheral surface of the second switching space 421, as shown It is preferable to be.

At this time, the piston rod 422 is formed in a shape that the cross-sectional area gradually increases from both ends to the center portion, that is, the cross-sectional area between the both ends of the piston rod 422 and the inner peripheral surface of the second switching space 421 increases the hydraulic fluid piston Both ends of the rod 422 will be able to flow smoothly without resistance in one direction or the other direction, respectively.

The check valves 424 and 424 'are mounted at both ends of the second switching space 421, respectively, and branch branches 420' of one side toward the one side port 910 while elastically supporting both ends of the piston rod 422, or Selective opening and closing of the branch passage 420 ″ of the other side facing the other port 920 side allows the hydraulic oil to flow from one port 910 to the other port 920 side or the other port 920 to the one side port 910 side. You can avoid backflow when

The check valves 424 and 424 ′ generally support one side port 910 and the other side port 920 of the hydraulic cylinder 900 while elastically supporting the springs in which the built-in springs block both ends of the second switching hole 421, respectively. It is a state which cuts off a pair of branch flow paths 420 'and 420 "which turn to all.

Accordingly, both ends of the piston rod 422 are in contact with the check valve 424 or the other check valve 424 'side of the second switching space 421, the spring is built in the check valve (424, 424') When the pressure is applied, the flow path of the hydraulic oil directed to the branch flow path 420 'on one side or the branch flow path 420 "on the other side is selectively opened and closed.

On the other hand, the end of the switching pipe 414 is preferably equipped with a switching unit 430 for manually or automatically converting the operation of reciprocating the switching flow path (410 '), the switching unit 430 described above is a switching body ( 440, an automatic switch 450, and a manual switch 460.

The switching body 440 is mounted on one side of the switching channel 410 'and closes the switching channel 410', and has a conductive path in which a switching passage 441 is formed along the forming direction of the switching channel 410 '. In more detail, the side mounted to the end of the fixing tube 413 described above is hollow switching passage 441 is formed, the portion exposed to the outside of the main body 100 is a solid cylindrical shape.

The automatic switch 450 is mounted on the switching body 440 and connected to an external power source (hereinafter, not shown) to reciprocate the switching tube 414. The coil 452, the mover 454, and the first spring ( 456).

The coil 452 is wound on the outer surface of the switching body 440 a plurality of times and electrically connected to an external power source to generate an electromotive force for reciprocating the switching tube 414 by receiving power from the external power source described above.

The mover 454 is coupled to the end of the switching tube 414 and reciprocates along the switching passage 441 formed in the switching body 440 by the electromotive force generated from the coil 452.

The first spring 456 is embedded in the switching passage 441 to elastically support the mover 454. In general, the first spring 456 supports the mover 454 to face the inlet 401 side, that is, the switching pipe 414. The branch passage 420 'of the one side is blocked, and the through-hole 414' and the branch passage 420 "of the other side are maintained in communication with each other.

Therefore, when the automatic switching port 450 changes the direction of the current flowing in the coil 452, the electromotive force is generated and the mover 454 reciprocates the switching passage 441, and the switching tube 414 is interlocked with the mover 454. ) Reciprocates the switching passage 410 'to selectively open and close the passages to the branch passage 420' on one side and the branch passage 420 "on the other side.

The manual switching port 460 is mounted to the switching body 440, and more particularly, the switching pipe 414 is coupled to penetrate along the forming direction of the switching body 440 and reciprocate along the forming direction of the switching passage 410 '. And a switching rod 462, a handle 463, a manual switching space 464, a locking piece 466, and a second spring 468 by manually reciprocating.

The switching rod 462 penetrates along the longitudinal direction of the switching body 440 and reciprocates the switching tube 414 while contacting or spaced apart from the end of the switching tube 414.

The handle 463 is mounted at the end of the switching rod 462 so as to be forward, reverse and reciprocate so as to provide an area for the user to grip and manipulate.

Manual switching space 464 is formed along the longitudinal direction of the switching rod 462 inside the switching body 440, which is a solid on the handle 463 side, the space that can be selectively locked fixed is formed at each end The tube 414 may fix the final position to which it was moved.

When the manual switching space 464 is a cylindrical space portion, the first locking space 464 ′ in which a part of one of the inner circumferential surfaces of the space portion extends perpendicularly to the longitudinal direction of the switching rod 462 is provided. The first locking space 464 ′ is a second locking space 464 ″ extending in a direction opposite to the first locking space 464 ′ such that a part of the other inner circumferential surface of the space portion is perpendicular to the longitudinal direction of the switching rod 462. It is formed spaced apart from.

The locking piece 466 reciprocates the manual switching space 464 and is mounted eccentrically on the outer circumferential surface of the switching rod 462 to be fixed to the first locking space 464 'or the second locking space 464 ".

The second spring 468 is mounted toward the switching passage 441 side along the outer circumferential surface of the switching rod 462 to elastically support the locking piece 466.

Here, the first locking space 464 ′ is disposed toward the handle 463 side and the second locking space 464 ″ is disposed toward the mover 454 side.

Therefore, when the locking piece 466 is fixed to the first locking space 464 ', the branch passage 420' of one side is opened while the switching pipe 414 moves to the handle 463 side, and the locking piece 466 is opened. When the second locking space 464 "is fixed, the switching pipe 414 moves toward the inlet 401 and the branch passage 420" of the other side is opened through the through hole 414 '.

The operation of each component of the manual and automatic oil pump module according to an embodiment of the present invention having the above structure will be described with reference to FIGS. 9 to 15, and for reference, FIGS. 9 and 10 are manual pumps 200. 11 to 13 show the operation and state of the automatic pump 300, and 14 and 15 show the operation of the direction switching unit 400, respectively.

For reference, in the drawings, white arrows indicate directions in which hydraulic oil is sucked and black arrows indicate directions in which hydraulic fluid is discharged.

First, the operation of the manual pump 200 will be described.

When the user rotates the lever 217 in one direction based on the operation shaft 212 ′ and lifts the movable rod 222 along the direction in which the cylinder 221 is formed, as shown in FIG. The pressure is applied to the first blocking hole 610 while being sucked to one side of the suction passage 600 through the connection passage 601.

Subsequently, when the hydraulic oil is pressurized to the first shut-off port 610, the reciprocating space 612 is opened, and the hydraulic oil is passed through the second connecting passage 602 connecting the reciprocating space 612 and the moving tube 221. Inhaled.

Thereafter, the user rotates the lever 217 in the other direction based on the operation shaft 212 ′ as shown in FIG. 10 to lower the movable rod 222 along the forming direction of the movable cylinder 221 to the movable cylinder 221. The hydraulic fluid that has been received reaches the reciprocating space 712 of the second block 710 via the reciprocating space 612 of the first block 610 to apply pressure to the second block 710.

Subsequently, when the hydraulic oil pressurizes the second blocking port 710, the reciprocating space 712 is opened, and the hydraulic oil passes through the discharge passage 700 through the communication passage 701. 401).

Next, the operation of the automatic pump 300 will be described.

First, in FIG. 11 and FIG. 12, the left side of the figure is defined as one side, and the right side of the figure is defined as the other side.

When the user operates the driving motor 320 as shown in FIG. 13, the locking ring 336 interlocked with the eccentric shaft 314 may engage the locking body 333 ′ of the piston 334 radially mounted on the eccentric shaft 314. Lead and turn eccentric.

Here, the rod 333 of the piston 334 reciprocates on the reciprocating path 312 "radially penetrating the bearing block 312 and communicates with the rotating space 312, the locking ring 336 is When the eccentric rotation toward the discharge port 302 as described above, the hydraulic oil is sucked in the direction of the arrow from the suction port 301 connected to the third connecting passage 603 and connected to the reciprocating path 312 ", and flows along the moving groove 313. And toward the discharge port 302.

Subsequently, when the eccentric shaft 314 is eccentrically rotated as shown in FIG. 12 and the locking ring 336 is moved to a position spaced apart from the discharge port 302, the other space of the bearing block 312, that is, the reciprocating path 312 ″. The hydraulic oil is sucked in the direction of the arrow from the suction port 301 communicating with the flow along the moving groove 313 and directed toward the discharge port 302.

That is, the bearing block 312 sucks or discharges the hydraulic fluid in such a way that the other side of the bearing block 312 is enlarged when one space inside the reciprocating path 312 ″ is expanded.

Thus, it can be seen that Fig. 11 and Fig. 12 show a state in which suction and discharge are simultaneously performed.

At this time, the overall suction direction of the hydraulic fluid is to lead to the reciprocating path (312 ") through the first connecting passage 601, the suction passage 600 and the third connecting passage 603 from the tank 500, referring to FIG. Able to know.

In addition, the overall discharge direction of the hydraulic fluid is the directional switch 400 of the direction switching unit 400 from the fifth connecting passage 703 via the reciprocating space 722 of the second blocking port 720 and the discharge passage 700 and the communication passage 701. It can be seen that leading to the inlet (401).

Next, the operation process of the direction switching unit 400 will be described.

For reference, in FIG. 14 and FIG. 15, the left side of the drawing is defined as the left side and the right side as the right side.

For reference, the operation process by the automatic switching port 450 is simply to change the direction of the current flowing in the coil 452, so as to move the switching pipe 414, it will be omitted for convenience, Figures 14 and 15 We will look at the operation process by the manual switch 460.

First, a description will be given of a case in which hydraulic oil applies an operating pressure from one port 910 of the hydraulic cylinder 900 to the other port 920.

The user grasps the handle 463 and pulls the change rod 462 to the right as shown in FIG. The locking piece 466 mounted on the 462 is caught in the first locking space 464 '.

Here, the switching pipe 414 moves to the right in conjunction with the mover 454 to open the branch passage 420 'on one side, and the branch passage 420 "on the other side is blocked.

At this time, the working oil flows from the communication passage 701 through the inlet 401 through the branch flow passage 420 ′ and pushes the piston rod 422 of the second switching space 421 to the right and the second switching space ( 421) Pressure is applied to the check valve 424 on one side to apply an operating pressure to one side port 910.

Subsequently, the hydraulic oil is reduced to the other port 920 via one port 910 of the hydraulic cylinder 900, and the hydraulic oil to be reduced is passed through the branch flow path 420 ″ through the second switching space 421. It moves from the outlet 402 to the tank 500 through the space between the switching passage 410 'and the outer circumferential surface of the switching tube 414, which is in constant communication with the outlet 402 of the direction switching port 400.

Next, a description will be given of a case in which the hydraulic oil applies the operating pressure from the other port 920 of the hydraulic cylinder 900 to one port 910.

The user grips the handle 463 and pulls the switching rod 462 to the left as shown in FIG. 15 to extend the first spring 456 supporting the mover 454 toward the switching tube 414 and the locking piece 466. The second locking space 464 ".

Here, the switch pipe 414 moves to the left in conjunction with the mover 454, and opens the branch flow path 420 'of the other side through the through hole 414', and the branch flow path 420 'of the one side of the switch pipe (420). 414) It is blocked by the flange of the outer peripheral surface.

At this time, the hydraulic fluid moves from the communication passage 701 through the inlet 401 to the branch flow passage 420 "on the other side through the through hole 414 'and moves the piston rod 422 of the second switching space 421 to the left side. Pushing out, pressure is applied to the check valve 424 ′ on the other side of the second switching space 421 to impart an operating pressure to the other port 920.

Subsequently, the hydraulic oil is reduced to one port 910 via the other port 920 of the hydraulic cylinder 900, and the hydraulic oil is reduced via the branch flow path 420 ′ through the second switching space 421. It moves from the outlet 402 to the tank 500 through the space between the switching passage 410 'and the outer circumferential surface of the switching tube 414, which is in constant communication with the outlet 402 of the direction switching port 400.

As described above, the present invention can increase the efficiency of the installation space through modularization and compactness of the product, maximize the generality of the driving method that can be manually or automatically switched, and is easy to install in an existing facility, and also easy to replace and repair. And it can be seen that the basic technical idea to provide an automatic oil pump module.

While the present invention has been described in connection with certain exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Accordingly, the true scope of the present invention should be determined by the following claims.

100.Main body 200 ... Manual pump
210.Hyeongdong-gu 211
212 ... operation block 212 '... operation shaft
213 ... Contact rollers 214 ... Operation
215 ... clearance 216 ... spring pin
217 Lever 220 Hatch
221 ... Dongtong 222 ...
223 Sealing material 225 O-ring
227 backup ring 300 automatic pump
301 ... Suction port 302 ... Discharge port
310.Rotator 311 ... Reservoir
312 ... Receiving block 312 '... Rotating space
312 "... 313 Roundtrips
314 ... eccentric axis 319 ... O-ring
320 ... Drive motor 321 ... Fixed block
322 bearing bearings 323 bearing bearings
324 ... Drive shaft 330 ... Suction discharge converter
332 Bearing 333 Rod
333 '... Jagged 334 ... Piston
335 Body ring 335 'Contact ring
336 ... engaging ring 400 ... direction switch
401 ... Inlet 402 ... Outlet
410 ... first switching unit 410 '... switching flow path
412 ... Switching space 414 ... Switching tube
420 ... 1st switching unit 420 ', 420 "... branch euro
421 ... 2nd switching space 422 ... piston rod
424, 424 '... check valve 430 ... switching unit
440 ... switching body 441 ... switching passage
450 Automatic switch 452 Coil
454 ... mover 456 ... first spring
460 ... manual changeover 462 ... changeover rod
463.Handle 464.Manual switching space
464 '... First Hanging Area 464 "... Second Hanging Area
466 ... Job 468 ... Second Spring
500 tank 600 suction channel
601 ... First connecting passage 602 ... Second connecting passage
603 ... 3 connecting passages 610 ... 1 blocking
612 ... Return Space 614 ... Ball
616 ... Spring 700 ... Discharge Passage
701.Communication passage 702 ... 4th connecting passage
703 ... Fifth Passage 710 ... Second Block
712.Round trip space 714.Ball
716 ... Spring 720 ... Third Block
722.Round trip space 724.Ball
726 ... Spring 800 ... Relief Valve
900 ... Hydraulic Cylinder 910 ... One Port
920 ... other port

Claims

A main body provided with a tank for receiving hydraulic oil;
A manual pump mounted to the main body to suck the hydraulic oil according to the expansion of the internal space and discharge the hydraulic oil according to the reduction of the internal space while switching the repeatedly rotating inclined operation to the reciprocating elevating operation;
If one side of the inner space expands while driving forward and reverse with the driving force, the hydraulic oil is sucked as the other side of the inner space shrinks, and if one side of the inner space shrinks, the hydraulic fluid is discharged as the other side of the inner space expands. An automatic pump radially in and out of the main body and rotating in an eccentric manner; And
And a direction switching unit for picking up or discharging the hydraulic fluid in one direction or the other direction and blocking reverse flow while reciprocating between one side connected to the manual pump and the automatic pump at one point and the other side connected to the tank.
The manual pump and the automatic pump and the direction switching unit is integrally mounted to the main body,
In the main body,
A suction passage connected to the suction side of the manual pump and the suction side of the automatic pump by being connected from the tank in which the hydraulic oil is received;
A discharge passage connected to the discharge side of the manual pump and the discharge side of the automatic pump, connected from the tank separately from the suction passage,
The discharge passage is connected to one side of the direction switching unit,
In the main body,
A first shut-off port mounted at one side of the suction passage toward the suction side of the manual pump and selectively blocking the flow of the hydraulic oil from the tank toward the suction side of the manual pump;
A second blocking hole mounted on one side of the discharge passage communicating with the first blocking hole on the suction passage to selectively block the flow of the hydraulic oil toward the suction side of the manual pump;
A third blocking port mounted on the other side of the discharge passage to selectively block the flow of the hydraulic oil from the discharge side of the automatic pump toward the direction switching unit;
The blocking direction of the first block and the second block is a mutually opposite direction manual and automatic oil pump module.

delete

The method of claim 1,
The manual pump,
A rotational hole in which the other end is inclined and reciprocates with respect to one end mounted on the main body so as to be forward and reversely rotated;
A lifting hole rotatably mounted at the other end of the rotation hole to suck the hydraulic oil of the tank while moving in one direction and to discharge the hydraulic oil to the direction switching part while moving in the other direction,
Manual and automatic combined oil pump module of the suction side and the discharge shaft of the manual pump is in communication with the suction passage and the discharge passage, respectively.

The method of claim 1,
The automatic pump,
A rotary ball axially coupled to one side of the main body to rotate eccentrically,
A driving motor coupled to the rotary sphere to transmit a driving force;
Manual and automatic oil pump including a suction discharge conversion port that is radially mounted to the rotary sphere and in conjunction with the eccentric rotation of the rotary sphere to suck the hydraulic oil from the tank to the suction passage side or discharge the hydraulic oil to the discharge passage side module.

The method of claim 1,
The direction switching unit,
A first switching unit for reciprocating a switching passage between an inlet into which the hydraulic oil discharged from the manual pump or the automatic pump flows and an outlet to which the hydraulic oil returns to the tank;
The operating direction of the hydraulic cylinder is changed in linkage with the reciprocation of the first switching unit while reciprocating in the orthogonal direction with respect to a pair of branch passages branched on the switching passage and connected to one port and the other port of the hydraulic cylinder, respectively; Manual and automatic combined oil pump module including a second switching unit for blocking the back flow of the hydraulic oil.

delete

The method of claim 1,
The main body includes:
A part of the hydraulic oil to the tank side when the pressure of the hydraulic oil is applied above the set pressure from the discharge side of the manual pump and the automatic pump so as to be connected to the discharge passage and the tank and connected to the direction switching part. Manual and automatic combined oil pump module further includes a relief valve to reduce the.

The method of claim 3, wherein
The rotational sphere,
A hollow support cylinder formed at one side of the tank and open at one side thereof to communicate with the suction passage and the discharge passage, respectively;
An operation block which is coupled to the operating shaft penetrating through an open side of the support cylinder and rotates forward and reverse;
An operation piece coupled to an end of the operation block to rotate in the support cylinder;
A contact roller mounted on a coupling portion of the operation block and the operation piece to rotate integrally with the operation piece;
A hollow spring pin of both ends penetrating through the end of the working piece and the end of the lifting hole so that the lifting hole is lifted so that the hydraulic oil is sucked or discharged to the direction switching unit side, and a slit cut along the longitudinal direction is formed; Include,
At the end of the hatch through which the spring pin penetrates is provided with a clearance space having an inner diameter larger than the outer diameter of the spring pin,
Manual and automatic oil pump module for applying pressure by the outer circumferential surface of the contact roller contact the end of the hatch when the hatch descends.

The method of claim 8,
The hatch is,
A hollow moving passage extending from the support cylinder toward the suction passage and the discharge passage side;
It is rotatably coupled to the end of the working piece includes a moving rod for reciprocating while contacting the inner surface of the moving tube,
When the end of the working piece moves to the tank side, the hydraulic oil is sucked into the space between the end of the moving rod and the moving tube,
Manual and automatic oil pump module for discharging the hydraulic fluid is discharged from the space between the end of the movable rod and the movable cylinder to the direction switching part when the end of the operating piece moves toward the suction passage and the discharge passage.

The method of claim 5, wherein
The first switching unit,
A first switching space provided with the switching flow path,
It includes a switch pipe of the both ends penetrating the first switching space to open and close the branch passage on one side or the other of the pair of branch passages communicated to the first switching space,
The switch pipe is always in communication with the outlet, the outlet is a manual and automatic combined oil pump module selectively communicates with the branch passage on one side or the branch passage on the other side in accordance with the reciprocating of the switching tube.

The method of claim 5, wherein
The second switching unit,
A second switching space formed in a direction orthogonal to the pair of branching passages and communicating with the pair of branching passages;
A piston rod reciprocating the second switching space;
Check valves respectively mounted to both ends of the second switching space to selectively open and close the branch flow path of the one side or the other side toward the one side port and the other side port while elastically supporting both ends of the piston rod, and to block the reverse flow of the hydraulic oil. Manual and automatic combined oil pump module comprising a.

11. The method of claim 10,
Manual and automatic oil pump module equipped with a switching unit to the end of the switching pipe to switch the operation of reciprocating the switching flow path manually or automatically.

13. The method of claim 12,
The switching unit,
A conductive switching body mounted on one side of the switching channel to close the switching channel and having a switching passage formed therein in a direction in which the switching channel is formed;
An automatic switching port mounted to the switching body and connected to an external power source to reciprocate the switching tube;
Manual and automatic oil pump module including a manual switching port mounted to the switching body and reciprocating in conjunction with the switching pipe while reciprocating along the direction of the formation of the switching channel.

The method of claim 13,
The automatic switch,
A coil wound on the outer surface of the switching body and electrically connected to an external power source;
A mover mounted inside the switching body and reciprocated by an electromotive force of the coil along the switching passage and coupled to an end of the switching tube;
Manual and automatic oil pump module including a first spring embedded in the switching passage for elastically supporting the mover.

The method of claim 13,
The manual switch,
A switching rod penetrating along the longitudinal direction of the switching body and contacting or spaced apart from an end of the switching tube while reciprocating;
A handle mounted to an end of the switching rod so as to enable forward, reverse rotation and reciprocation of the switching rod;
The first locking space is formed in the switching body on the handle side in the longitudinal direction of the switching rod, and a portion of one inner peripheral surface of the switch rod extends orthogonally to the longitudinal direction of the switching rod, and a portion of the other inner peripheral surface of the switching rod. A manual switching space spaced apart from the second locking space extending in a direction opposite to the first locking space to be perpendicular to the longitudinal direction of
A locking piece reciprocating the manual switching space and eccentrically mounted on an outer circumferential surface of the switching rod and fixed to the first locking space or the second locking space;
Manual and automatic oil pump module including a second spring is mounted toward the switching passage side along the outer circumferential surface of the switching rod to elastically support the locking piece.