Micro-dispensing lubricant injector employing variable resistor

Abstract

The present invention relates to a micro-dispensing lubricant injector employing a variable resistor and, more specifically, to a micro-dispensing lubricant injector employing a variable resistor, which can easily adjust the amount of lubricant dispensed from a mechanical lubricator. According to the present invention, the amount of lubricant dispensed can be easily controlled, and in particular, an accurate amount of lubricant can be mechanically dispensed.

Description

Micro-dispensing lubricant injector with variable resistor

[0001] The present invention relates to a micro-dispensing lubricant injector with a variable resistor, and more specifically, to a micro-dispensing lubricant injector with a variable resistor that can easily adjust the amount of lubricant dispensed from a mechanical lubricant dispenser.

[0002] Since industrial machinery performs various movements, parts where mechanical friction occurs are inevitable; generally, lubricant is supplied to these parts to reduce friction.

[0003] Industrial machinery, such as manufacturing machinery installed in a production plant to perform specific processes, can maintain its lubrication by having an operator inspect the lubrication status of the manufacturing machinery and then injecting lubricant into parts where the lubrication status is deemed poor using a lubricant dispenser.

[0004] However, this method has the disadvantage that as the manufacturing machinery becomes larger and more complex, it is not easy for the operator to inject lubricant, and the process takes a long time.

[0005] To address the problems of such conventional lubricant injection methods, a system is recently used in which a lubricant dispenser is installed on manufacturing machinery, and the dispenser operates to inject lubricant when specific conditions are met.

[0006] Meanwhile, lubricating oil dispensers can be broadly classified into spring-type dispensers that use the elasticity of a spring to pressurize a plunger for lubrication, gas-type dispensers that use gas pressure generated to continuously pressurize a plunger for lubrication, and mechanical-type dispensers configured to provide mechanically accurate discharge volume and discharge cycles by compensating for the disadvantages of the spring and gas types.

[0007] In the case of current mechanical fuel dispensers, the motor is controlled via an MCU to regulate the operating cycle and amount.

[0008] This method operates more stably than the gas type, but with the current method, the lubricating oil is discharged once depending on the operation of the drive unit.

[0009] In other words, the amount of lubricating oil discharged per cycle is fixed, and there is a problem in that the amount cannot be arbitrarily adjusted with the current method.

[0010] The present invention was devised to solve the above-mentioned problems and aims to provide a micro-dispensing lubricant injector with a variable resistor that can easily control the discharge amount of lubricant.

[0011] The purpose is to provide a micro-dispensing lubricant injector equipped with a variable resistor that can mechanically dispense an accurate amount, and in particular, dispense small, precise amounts.

[0012] In addition, the purpose is to provide a micro-dispensing lubricant injector equipped with a variable resistor that can accurately determine the position of the plunger using the resistance value of the variable resistor and finely adjust the amount of lubricant dispensed accordingly.

[0013] In addition, other objects and advantages of the present invention will be described below, and it should be noted that they will be encompassed to a broader extent by means and combinations within the scope that can be easily derived from the matters described in the claims of the present invention and the disclosure of the embodiments thereof.

[0014] The present invention for achieving the above objective comprises a motor, a worm and a worm wheel that rotate by receiving driving force from the motor, a link eccentrically connected to the worm wheel to convert the rotational motion of the worm wheel into vertical motion, and a plunger that moves up and down in conjunction with the link, and is a lubricant injector that discharges lubricant by the lifting and lowering of the plunger, wherein the lubricant injector comprises: a variable resistor that is coupled to any one of the link, the worm, or the worm wheel and whose resistance value varies according to the lifting and lowering of the plunger; and a control unit that checks the lifting position of the plunger according to the resistance value, checks the amount of lubricant discharged according to the confirmed position, and drives the motor so that a set amount of lubricant is discharged.

[0015] And according to a preferred embodiment of the present invention, the variable resistor is a slide type installed on the outer periphery of the conduit to correspond with the plunger, and is connected to the link, and is connected to a link shaft connecting the link and the plunger, so that a handle that moves up and down together with the link shaft and the plunger moves up and down along the variable resistor, and is characterized in that the lifting position of the plunger by the variable resistor is confirmed according to the degree of lifting of the link.

[0016] In addition, according to a preferred embodiment of the present invention, the variable resistor is of the rotary type connected to the rotation axis of the worm, and is characterized in that the lifting position of the plunger by the variable resistor is confirmed according to the degree of rotation of the worm.

[0017] And according to a preferred embodiment of the present invention, the variable resistor is a rotary type connected to the rotation axis of the worm wheel, and is characterized in that the lifting position of the plunger by the variable resistor is confirmed according to the degree of rotation of the worm wheel.

[0018] In addition, according to a preferred embodiment of the present invention, the device further comprises: a storage unit having an injection port at the bottom for injecting the filled lubricant, into which lubricant is filled; and a body comprising a first ball valve provided at the bottom of the storage unit and connected to the injection port of the storage unit to prevent backflow of the lubricant, a discharge port provided at the bottom for discharging the injected lubricant, a plunger that moves up and down in a conduit connecting the injection port and the discharge port, and a second ball valve provided to be elastically supported within the plunger.

[0019] And according to a preferred embodiment of the present invention, when the plunger is raised and the first ball blocks the internal flow path of the first ball valve, when the plunger is lowered to the lowest position by driving the motor, the first ball of the first ball valve is lowered and the second ball of the second ball valve is raised so that all of the lubricating oil of the storage unit is injected into the pipeline, and thereafter the plunger is raised again by reverse driving of the motor, and when it is raised to a set position, the first ball is raised and the second ball is lowered so that the lubricating oil of the pipeline is discharged to the discharge port in a set amount, and the upward driving of the plunger is repeated for a set position and number of times.

[0020] In addition, according to a preferred embodiment of the present invention, while the plunger is raised and the first ball is blocking the internal flow path of the first ball valve, the plunger is lowered by the driving of the motor, and when it is lowered to a set position, a set amount of lubricating oil is injected into the pipe, and subsequently, the plunger is raised again by the reverse driving of the motor, and when it is raised to a set position, the first ball is raised and the second ball is lowered, and a set amount of lubricating oil is discharged through the discharge port, and the lowering and raising driving of the plunger is repeatedly performed to a set position.

[0021] As described above, according to the present invention, the following effects can be expected.

[0022] It has the effect of easily controlling the discharge amount of lubricating oil, and in particular, mechanically accurately discharging the amount.

[0023] In other words, conventionally, the amount of lubricating oil discharged at once is fixed and it had to be discharged all at once, but in the present invention, the discharge amount can be divided so that the lubricating oil can be discharged in small amounts, such as 1 / 2, 1 / 3, 1 / 4, 1 / 8 of the discharge amount.

[0024] In the present invention, a variable resistor is used to allow for the discharge of a small, precise amount. By installing the variable resistor in the drive unit and checking the lifting position of the piston, it can be moved to a set position so that a desired amount of lubricating oil can be discharged.

[0025] In other words, by accurately determining the position of the plunger using the resistance value of a variable resistor, it is possible to finely adjust the amount of lubricating oil discharged accordingly.

[0026] In addition, it should be noted that other effects of the present invention will be encompassed to a broader extent by the embodiments described above and the matters described in the claims of the present invention, as well as by effects that can be easily derived from them and potential advantages that contribute to industrial development.

[0027] FIGS. 1a and FIGS. 1b are cross-sectional views showing the operating state of a micro-dispensing lubricant injector with a variable resistor according to the present invention.

[0028] FIGS. 2a and 2b are perspective views showing the operating state of a micro-dispensing lubricant injector with a variable resistor applied according to the first embodiment of the present invention.

[0029] FIGS. 3a and 3b are perspective views showing other examples of the operating state of a micro-dispensing lubricant injector with a variable resistor applied according to the first embodiment of the present invention.

[0030] FIGS. 4a and FIGS. 4b are perspective views showing the operating state of a micro-dispensing lubricant injector with a variable resistor applied according to a second embodiment of the present invention.

[0031] <Explanation of Symbols>

[0032] 100: Micro-dispensing lubricant injector with variable resistor

[0033] 10; Storage unit

[0034] 11; injection port

[0035] 20; body

[0036] 21, 33; ball

[0037] 22, 32; ball valve

[0038] 23; discharge port

[0039] 24; pipe

[0040] 30; plunger

[0041] 31; spring

[0042] 40; driving unit

[0043] 41; motor

[0044] 42; worm

[0045] 43; Worm wheel

[0046] 44; link

[0047] 45; Link axis

[0048] 50a, 50b; variable resistor

[0049] 51; handle

[0050] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to the description, the advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the attached drawings. Furthermore, it should be noted that the terms used in this specification are for describing the embodiments and are not intended to limit the present invention; that singular forms of such terms include plural forms unless specifically stated otherwise in the text, and that words indicating direction in the description are intended to aid in understanding the description and may change depending on the context.

[0051] A micro-dispensing lubricant injector with a variable resistor according to a preferred embodiment of the present invention will be described in detail below with reference to the attached drawings. FIGS. 1a and 1b are cross-sectional views showing the operating state of a micro-dispensing lubricant injector with a variable resistor according to the present invention.

[0052] Referring to FIG. 1a and FIG. 1b, a lubricating oil dispenser (100) according to the present invention includes a storage unit (10) into which lubricating oil is filled, a body (20) provided at the bottom of the storage unit (10), a driving unit (40), and a control unit.

[0053] The storage unit (10) is filled with lubricating oil, and an injection port (11) for injecting the filled lubricating oil is provided at the bottom.

[0054] The storage unit (10) is of a general form and, as shown in the drawing, may be equipped with a pouch filled with lubricating oil inside and a spring that presses the pouch from the top.

[0055] The body (20) is provided at the bottom of the storage unit (10) and is a place where lubricating oil from the storage unit (10) is injected. Through the following configurations, such as a plunger (30), the lubricating oil injected into the body (20) is discharged through the discharge port (23).

[0056] At this time, a driving unit (40) is also provided inside the body (20) to drive the configuration of the plunger (30), etc.

[0057] In this way, components for discharging lubricating oil are provided inside the body (20), and a discharge port (23) for discharging lubricating oil is provided at the bottom of the body (20).

[0058] This body (20) includes a first ball valve (22), a discharge port (23), a plunger (30), and a second ball valve (32).

[0059] The first ball valve (22) is connected to the injection port (11) of the storage unit (10) to prevent backflow of lubricating oil, and is equipped with a first ball (21) inside.

[0060] The first ball valve (22) is provided with an internal flow path, and lubricating oil injected through the injection port (11) is injected into the body (20) along the internal flow path of the first ball valve (22).

[0061] The first ball (21) provided inside the first ball valve (22) is moved up and down within the internal flow path by a plunger (30) provided at the bottom of the first ball valve (22).

[0062] That is, as shown in FIG. 1a, in the pre-operation state, i.e., when the plunger (30) is raised, the first ball (21) is positioned at the top inside the first ball valve (22).

[0063] In this way, since the first ball (21) is located at the uppermost part of the internal flow path of the first ball valve (22) and blocks the internal flow path of the first ball valve (22), the lubricating oil of the storage unit (10) cannot be injected into the body (20).

[0064] On the other hand, as shown in FIG. 1b, when the plunger (30) is lowered, the first ball (21) is located at the bottom inside the first ball valve (22).

[0065] At this time, a pin (23) is provided inside the first ball valve (22) so that the first ball (21) does not deviate downward inside the first ball valve (22).

[0066] In this way, when the first ball (21) is positioned at the lower part of the internal flow path of the first ball valve (22), the internal flow path of the first ball valve (22) is opened, so that the lubricating oil of the storage unit (10) is injected into the body (20), that is, into the internal flow path of the first ball valve (22).

[0067] Next, the plunger (30) is provided in a conduit (24) connecting the inlet (11) and the outlet (23) and moves up and down.

[0068] The conduit (24) is provided inside the body (20), and lubricating oil injected through the injection port (11) is injected into the conduit (24) through the internal flow path of the first ball valve (22) and discharged through the discharge port (23).

[0069] The plunger (30) is raised and lowered within the pipe (24), and the configuration of the drive unit (40) for raising and lowering the plunger (30) is described below.

[0070] The plunger (30) is equipped with a second ball valve (32) inside.

[0071] This second ball valve (32) is equipped with a spring (31) and a second ball (33), and the spring (31) elastically supports the second ball (33) as the plunger (30) moves up and down.

[0072] That is, the spring (31) is in a compressed state when the plunger (30) is raised as shown in FIG. 1a, and is in a tensioned state when the plunger (30) is lowered as shown in FIG. 1b.

[0073] The second ball (33), which is elastically supported by the spring (31), moves up and down within the internal flow path of the plunger (30).

[0074] That is, as shown in FIG. 1a, in the pre-operation state, when the plunger (30) is raised, the second ball (33) is positioned at the bottom by the compressed spring (31).

[0075] Here, when the operation as shown in FIG. 1a is performed again after the lubricant has been injected into the body (20) as shown in FIG. 1b, the lubricant is injected into the inside of the body (20), that is, into the pipe (24).

[0076] Accordingly, the lubricating oil injected into the body (20) is discharged to the lower part of the body (20) through the discharge port (23) because the internal flow path of the plunger (30) is opened by the second ball (33).

[0077] And at this time, the first ball (21) is positioned at the uppermost part of the internal flow path of the first ball valve (22) and is in a state of blocking the internal flow path of the first ball valve (22), so the lubricating oil of the storage unit (10) is not injected into the body (20).

[0078] On the other hand, as shown in FIG. 1b, when the plunger (30) is lowered, the compression of the spring (31) is released so that the second ball (32) is positioned at the top, and as a result, the internal flow path of the plunger (30) becomes blocked.

[0079] At this time, the first ball (21) is positioned downward inside the first ball valve (22), so that the internal flow path of the first ball valve (22) is opened, and as a result, the lubricating oil of the storage unit (10) is injected into the body (20) through the injection port (11). However, since the second ball (33) blocks the internal flow path of the plunger (30), the injected lubricating oil cannot flow into the interior of the plunger (30) and is filled into the pipe (24).

[0080] Next, we examine the driving unit (40) among the components provided inside the body (20).

[0081] Refer to FIGS. 2a and FIGS. 2b further to examine the structure of the driving unit (40) in more detail. FIGS. 2a and FIGS. 2b are perspective views showing the operating state of a micro-dispensing lubricant injector with a variable resistor applied according to the first embodiment of the present invention.

[0082] That is, referring to FIGS. 1a and 1b and FIGS. 2a and 2b, the driving unit (40) is connected to the plunger (30) to raise and lower the plunger (30) and includes a motor (41), a worm (42), a worm wheel (43), a link (44), and a link shaft (45).

[0083] The worm (42) is coupled to the rotation axis of the motor (41) and rotates according to the driving of the motor (41).

[0084] The worm wheel (43) meshes with the worm (42), and the worm wheel (43) rotates according to the rotation of the worm (42).

[0085] One side of the link (44) is eccentrically connected to the worm wheel (43), and the other side is connected to the link shaft (45).

[0086] These links (44) rotate according to the rotation of the worm wheel (43) and are eccentrically connected to the worm wheel (43) so that the link shaft (45) can be raised and lowered.

[0087] One side of the link shaft (45) is connected to the other side of the link (44), and the other side is connected to the plunger (30).

[0088] As described above, when the worm (42) and the worm wheel (43) are rotated by the driving of the motor (41), the link (44) is rotated, and the link shaft (45) is raised and lowered, so the plunger (30) connected to the link shaft (45) is raised and lowered.

[0089] Next, the control unit (not shown) checks the lifting position of the plunger (30) by the resistance value detected through the variable resistor (50a, 50b in FIG. 4a) described below.

[0090] The control unit checks the amount of lubricating oil discharged according to the confirmed location.

[0091] That is, the control unit checks the lifting position of the plunger (30) from which the desired discharge amount is discharged, and drives the motor (41) so that the set amount of lubricating oil is discharged accordingly, thereby controlling the plunger (30) to be positioned at the corresponding position.

[0092] Next, we examine the variable resistors (50a, 50b) of the micro-discharge lubricating oil injector (100) to which the variable resistor according to the present invention is applied.

[0093] The variable resistors (50a, 50b) are described below in the first to third embodiments depending on the installation location.

[0094] Meanwhile, although the present invention is described as using variable resistors (50a, 50b) for fine discharge of lubricating oil, a component capable of confirming the position of the plunger (30), such as a resistive position sensor, may also be used.

[0095] First embodiment

[0096] Referring to FIGS. 1a and 1b and FIGS. 2a and 2b, a micro-dispensing lubricant injector (100) with a variable resistor according to the first embodiment includes a variable resistor (potentiometer; 50a) and a handle (51).

[0097] The variable resistor (50a) is of the slide type and is installed on the outer edge of the conduit (24) in correspondence with the plunger (30).

[0098] That is, the plunger (30) is provided inside the conduit (24) and moves up and down, and the variable resistor (50a) is installed outside the conduit (24) and is installed to correspond to the up and down movement of the plunger (30).

[0099] The variable resistor (50a) can check the lifting position of the plunger (30) when the plunger (30) is lifted by the driving unit (40), which is possible through the handle (51) connected to the plunger (30).

[0100] The handle (51) is connected to the other side of the link (44) and one side of the link shaft (45), and is raised together with the link shaft (45) and the plunger (30).

[0101] That is, one side of the handle (51) is connected by engaging with the other side of the link (44) and one side of the link shaft (45), and the other side is connected to the variable resistor (50a), and when the handle (51) is raised or lowered, the other side of the handle (51) slides along the variable resistor (50a).

[0102] The variable resistor (50a) detects the resistance value through the raising and lowering of the handle (51), and through this, the control unit recognizes the raising and lowering position of the plunger (30) connected to the handle (51).

[0103] Below, we will examine the operation of the micro-discharge lubricant injector (100) with a variable resistor applied according to the present embodiment, that is, the lubricant discharge operation.

[0104] The present invention is characterized by the ability to easily control the discharge amount of lubricating oil, and such fine discharge of lubricating oil can be performed in two ways.

[0105] First, after injecting 100% of the lubricant into the body (20), the lubricant can be discharged in a set amount, for example, 1 / 4.

[0106] Here, 100% means the amount that can be fully filled into the pipe (24) inside the body (20), and the set amount is not limited to 1 / 4.

[0107] Secondly, 1 / 4 of the lubricant volume can be injected into the body (20), the injected 1 / 4 of the lubricant volume can be discharged, and then 1 / 4 of the lubricant volume can be injected into the body (20), and the injected 1 / 4 of the lubricant volume can be discharged.

[0108] This can be configured as needed, so let's first look at the first method.

[0109] The state before operation is as shown in FIG. 1a and FIG. 2a (in the case of FIG. 2a, the state before the operation of the arrow), the storage unit (10) is filled with lubricating oil, and the plunger (30) is in a raised state.

[0110] And the first ball (21) of the first ball valve (22) is raised upward and is blocking the internal flow path of the first ball valve (22), and the second ball (33) of the plunger (30) is lowered downward because the spring (31) is compressed.

[0111] Next, when the motor (41) is driven by the drive unit (40), that is, when the state is reached as shown in FIG. 2b, the worm (42) is rotated as shown by arrow 1, the worm wheel (43) is rotated as shown by arrow 2, the link (44) is rotated and lowered, and the handle (51) is lowered as shown by arrow 3.

[0112] At this time, as shown in FIG. 1b, inside the body (20), the link shaft (45) is lowered by the lowering of the link (44), and the plunger (30) is lowered.

[0113] Here, the plunger (30) is lowered to the bottom, so as to ensure that 100% of the lubricant is injected, as previously mentioned.

[0114] Then, due to the elastic force of the spring (31), the second ball (33) rises and blocks the internal flow path of the plunger (30).

[0115] Additionally, the first ball (21) is lowered by the lowering of the plunger (30), so that the internal flow path of the first ball valve (22) is opened, and the lubricating oil of the storage unit (10) is injected into the body (20) through the injection port (11).

[0116] Here, as described above, since the second ball (33) is blocking the internal flow path of the plunger (30), the lubricating oil is not discharged from the pipe (24) of the body (20) and is filled instead.

[0117] Next, the plunger (30) is raised again by the driving of the driving unit (40), that is, by the driving of the motor (41) and the rotation of the worm (42) and worm wheel (43), as shown in FIG. 2a. At this time, the plunger (30) is raised by a set amount, that is, 1 / 4, as indicated by arrow 4.

[0118] At this time, as illustrated in FIG. 1a, the first ball (21) rises and the second ball (33) descends as the plunger (30) rises inside the body (20), so that the lubricating oil in the storage unit (10) is no longer injected downward, and the lubricating oil filled in the pipe (24) is discharged through the discharge port (23) at the bottom of the body (20) as the flow path inside the plunger (30) opens due to the descending of the second ball (33).

[0119] In this way, the amount of lubricant injected and discharged is controlled according to the lifting position of the plunger (30). When the plunger (30) is lowered to its lowest position, all of the lubricant is injected into the body (20), and when the plunger (30) is raised, for example, to a set position, the amount of lubricant discharged is set.

[0120] Meanwhile, the lifting and lowering of this plunger (30) proceeds repeatedly for a set position and number of times, as shown by the arrow in FIG. 2a.

[0121] That is, as shown in FIG. 2a, when the plunger (30) is set to rise four times in succession at equal intervals, it rises repeatedly as shown by arrows 5, 6, and 7, and the plunger (30) rises as shown by arrow 4 to discharge 1 / 4 of the filled lubricant, and after the set time has passed, the plunger (30) rises again as shown by arrow 5 to discharge 1 / 4 of the lubricant.

[0122] Next, we will examine a second method of lubricating oil discharge according to the present embodiment. FIGS. 3a and 3b are perspective views showing another example of the operating state of a micro-discharge lubricating oil injector with a variable resistor applied according to the first embodiment of the present invention.

[0123] The state before operation is as shown in FIG. 1a and FIG. 3a (in the case of FIG. 3a, the state before the operation of the arrow), with the storage unit (10) filled with lubricating oil and the plunger (30) in a raised state.

[0124] And the first ball (21) of the first ball valve (22) is raised upward and is blocking the internal flow path of the first ball valve (22), and the second ball (33) of the plunger (30) is lowered downward.

[0125] Next, when the driving unit (40) is driven to a state as shown in FIG. 3b, that is, the worm (42) is rotated as shown by arrow 1, the worm wheel (43) is rotated as shown by arrow 2, the link (44) is rotated and lowered, and the handle (51) is lowered as shown by arrow 3.

[0126] Here, the rotation of the worm (42) and worm wheel (43) and the lowering of the handle (51) are set to a certain amount, so that 1 / 4 of the amount of lubricant is injected and discharged as described above.

[0127] At this time, as shown in FIG. 1b, inside the body (20), the link shaft (45) is lowered by the lowering of the link (44), and the plunger (30) is lowered.

[0128] Here, the plunger (30) is lowered by only 1 / 4 as indicated by arrow 3, and the lubricant is injected by only 1 / 4.

[0129] Then, due to the elastic force of the spring (31), the second ball (33) rises and blocks the internal flow path of the plunger (30).

[0130] Additionally, the first ball (21) is lowered by the lowering of the plunger (30), so that the internal flow path of the first ball valve (22) is opened, and the lubricating oil of the storage unit (10) is injected into the body (20) through the injection port (11).

[0131] Here, as described above, since the second ball (33) is blocking the internal flow path of the plunger (30), the lubricating oil is not discharged from the pipe (24) of the body (20) and is filled instead.

[0132] Next, the plunger (30) is raised again by the driving of the driving unit (40), that is, by the driving of the motor (41) and the rotation of the worm (42) and the worm wheel (42), as shown in FIG. 3, and the plunger (30) is raised by a set amount, that is, 1 / 4, as indicated by arrow 4.

[0133] At this time, as illustrated in FIG. 1, inside the body (20), as the plunger (30) rises, the first ball (21) rises and the second ball (33) descends, so that the lubricating oil in the storage unit (10) is no longer injected downward, and the lubricating oil filled in the pipe (24) is discharged through the discharge port (23) at the bottom of the body (20) as the flow path inside the plunger (30) opens due to the descending of the second ball (33).

[0134] That is, the lubricating oil filled in the body (20) is discharged, and 1 / 4 of the lubricating oil is discharged.

[0135] Next, after a set time has passed or the drive unit (40) is driven by an operator, as shown in FIG. 3b, the worm (42) is rotated as indicated by the 1' arrow, the worm wheel (43) is rotated as indicated by the 2' arrow, the link (44) is rotated and lowered, and the handle (51) is lowered as indicated by the 3' arrow.

[0136] Here, the plunger (30) is lowered by only 1 / 4 as shown by the 3' arrow, and the lubricant is injected by only 1 / 4.

[0137] And as shown in FIG. 3a, the plunger (30) is raised by another 1 / 4 as shown in arrow 4' by the driving of the driving unit (40).

[0138] At this time, 1 / 4 of the lubricating oil that was filled in the body (20) is discharged.

[0139] Next, as shown again in FIG. 3b, the worm (42) is rotated as indicated by the 1" arrow, the worm wheel (43) is rotated as indicated by the 2" arrow, the link (44) is rotated and lowered, and the handle (51) is lowered as indicated by the 3" arrow.

[0140] Here, the plunger (30) is lowered by only 1 / 4 as indicated by the 3" arrow, and the lubricant is injected by only 1 / 4.

[0141] And as shown in FIG. 3a, the plunger (30) is raised by arrow 4", that is, by another 1 / 4, so that 1 / 4 of the lubricating oil is discharged by driving the drive unit (40).

[0142] Next, as shown again in FIG. 3b, the worm (42) is rotated as indicated by the 1"' arrow, the worm wheel (43) is rotated as indicated by the 2"' arrow, the link (44) is rotated and lowered, and the handle (51) is lowered as indicated by the 3"' arrow.

[0143] Here, the plunger (30) is lowered by only 1 / 4 as indicated by the 3"' arrow, and the lubricant is injected by only 1 / 4.

[0144] And as shown in FIG. 3a, the plunger (30) is raised by arrow 4"', that is, by another 1 / 4, and 1 / 4 of the lubricating oil is discharged by driving the drive unit (40).

[0145] In this way, the lifting drive of the plunger (30) is repeatedly performed to a set position to control the amount of lubricant injected and discharged. The plunger (30) is lowered, for example, to a set position, so that a set amount of lubricant is injected into the body (20), and the plunger (30) is raised, for example, to a set position, so that a set amount of lubricant is discharged.

[0146] 2nd embodiment

[0147] FIGS. 4a and FIGS. 4b are perspective views showing the operating state of a micro-dispensing lubricant injector with a variable resistor applied according to a second embodiment of the present invention.

[0148] Referring to FIGS. 1a and 1b and FIGS. 4a and 4b, when looking at the micro-dispensing lubricant injector (100) with a variable resistor according to the second embodiment, the variable resistor (50b) is characterized by being connected to a worm (42).

[0149] The variable resistor (50b) is of the rotary type, and the rotation axis of the variable resistor (50b) is connected to the rotation axis of the worm (42), and the lifting position of the plunger (30) can be confirmed by the variable resistor (50b) according to the degree of rotation of the worm (42).

[0150] Below, we will examine the operation of the micro-discharge lubricant injector (100) with a variable resistor applied according to the present embodiment, that is, the lubricant discharge operation.

[0151] It is characterized by being able to easily adjust the amount of lubricating oil discharged, and can be performed in two ways, as in the first embodiment described above.

[0152] That is, in the first method, 100% of the lubricant is injected into the body (20), and then the lubricant can be discharged in a set amount, for example, 1 / 4.

[0153] In the second method, 1 / 4 of the lubricant can be injected into the body (20), then 1 / 4 of the injected lubricant can be discharged, and then 1 / 4 of the lubricant can be injected into the body (20), and then 1 / 4 of the injected lubricant can be discharged.

[0154] Regarding the first method, since it is similar to the first embodiment described above, it will be explained briefly.

[0155] The state before operation is as shown in FIG. 1a and FIG. 4a (in the case of FIG. 4a, the state before the operation of the arrow), the storage unit (10) is filled with lubricating oil, and the plunger (30) is in a raised state.

[0156] And the first ball (21) of the first ball valve (22) is raised upward and is blocking the internal flow path of the first ball valve (22), and the second ball (33) of the plunger (30) is lowered downward as the spring (31) is compressed.

[0157] Next, when the motor (41) is driven by the drive unit (40), that is, when the state is reached as shown in FIG. 4b, the worm (42) is rotated as shown by arrow 1, the worm wheel (43) is rotated as shown by arrow 2, and the link (44) is rotated and lowered as shown by arrow 3.

[0158] At this time, as shown in FIG. 1b, inside the body (20), the link shaft (45) is lowered by the lowering of the link (44), and the plunger (30) is lowered.

[0159] Here, the plunger (30) is lowered to the bottom, so as to ensure that 100% of the lubricant is injected, as previously mentioned.

[0160] Then, due to the elastic force of the spring (31), the second ball (33) rises and blocks the internal flow path of the plunger (30), so that the lubricating oil cannot be discharged from the pipe (24) of the body (20) and is filled instead.

[0161] Additionally, the first ball (21) is lowered by the lowering of the plunger (30), so that the internal flow path of the first ball valve (22) is opened, and the lubricating oil of the storage unit (10) is injected into the body (20) through the injection port (11).

[0162] Next, the plunger (30) is raised again by the driving of the driving unit (40), that is, by the driving of the motor (41) and the rotation of the worm (42) and the worm wheel (43), as shown in FIG. 4a. At this time, the motor (41) is driven only by a set amount, so that the worm (42) rotates by 1 / 4 as shown in arrow 4, the worm wheel (43) rotates as shown in arrow 5, and the link shaft (45) is raised as shown in arrow 6, so that the plunger (30) is raised.

[0163] At this time, as illustrated in FIG. 1a, the first ball (21) rises and the second ball (33) descends as the plunger (30) rises inside the body (20), so that the lubricating oil in the storage unit (10) is no longer injected downward, and the lubricating oil filled in the pipe (24) is discharged through the discharge port (23) at the bottom of the body (20) as the flow path inside the plunger (30) opens due to the descending of the second ball (33).

[0164] In this way, the amount of lubricant injected and discharged is controlled according to the rising and falling position of the plunger (30). When the plunger (30) is lowered to its lowest position, all of the lubricant is injected into the body (20), and when the plunger (30) is raised, for example, to a set position, the amount of lubricant discharged is set.

[0165] Meanwhile, the rise of this plunger (30) proceeds repeatedly for a set position and number of times, as shown by the arrow in FIG. 4a.

[0166] That is, as shown in FIG. 4a, when the plunger (30) is set to rise four times at equal intervals, after the set time has passed, the worm (42) and the worm wheel (43) are rotated as shown by arrows 4' and 5', the link shaft (45) is raised as shown by arrow 6' and the plunger (30) is raised to discharge 1 / 4 of the filled lubricant, and after the set time has passed, the worm (42) and the worm wheel (43) are rotated as shown by arrows 4" and 5", and the link shaft (45) and the plunger (30) are raised again as shown by arrow 6" to discharge 1 / 4 of the lubricant.

[0167] Next, the second method of discharging lubricating oil according to the present embodiment is similar to the first embodiment described above, wherein the lubricating oil in the storage unit (10) is injected in a set amount, for example, only 1 / 4 of the amount, and then only the injected 1 / 4 of the amount is discharged, and this is performed repeatedly.

[0168] That is, the worm (42) and the worm wheel (43) are rotated by a set amount, i.e., 1 / 4, to lower the link shaft (45) and the plunger (30) by a set amount to inject lubricant into the body (20), and then the worm (42) and the worm wheel (43) are rotated in the opposite direction by a set amount, i.e., 1 / 4, to raise the link shaft (45) and the plunger (30) by a set amount to discharge the filled lubricant.

[0169] The downward and upward driving of these plungers (30) can be repeatedly performed for a set position to control the amount of lubricant injected and discharged.

[0170] Third embodiment

[0171] Looking at the micro-dispensing lubricant injector with a variable resistor according to the third embodiment, it is similar to the second embodiment described above, and is characterized by the variable resistor being connected to a worm wheel (43 in FIG. 4a).

[0172] The variable resistor is of the rotary type, similar to the second embodiment described above, and the rotation axis of the variable resistor is connected to the rotation axis of the worm wheel, and the lifting position of the plunger can be confirmed by the variable resistor according to the degree of rotation of the worm wheel.

[0173] Since the lubricating oil dispenser according to this embodiment operates in the same way as the second embodiment, a description thereof is omitted.

[0174] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications, changes, and substitutions within the scope of the essential characteristics of the present invention. Furthermore, as described above, the embodiments disclosed in the present invention and the accompanying drawings are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments and accompanying drawings. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. A lubricating oil injector comprising a motor, a worm and a worm wheel that rotate by receiving driving force from the motor, a link eccentrically connected to the worm wheel to convert the rotational motion of the worm wheel into vertical motion, and a plunger that moves up and down in conjunction with the link, wherein the lubricating oil is discharged by the lifting and lowering of the plunger, A variable resistor coupled to any one of the above link, worm, or worm wheel, wherein the resistance value varies according to the lifting and lowering of the plunger; A micro-dispensing lubricant injector with a variable resistor, further comprising: a control unit that checks the lifting position of the plunger according to the resistance value, checks the discharge amount of lubricant according to the confirmed position, and drives the motor so that a set discharge amount of lubricant is discharged.

2. In Paragraph 1, The above variable resistor is a slide type installed on the outer perimeter of the above conduit to correspond with the above plunger, and A handle connected to the above link, and connected to a link shaft connecting the above link and the plunger, which moves up and down together with the link shaft and the plunger, is connected by moving up and down along the variable resistor. A micro-dispensing lubricant injector with a variable resistor, characterized in that the lifting position of the plunger by the variable resistor is confirmed according to the degree of lifting of the above link.

3. In Paragraph 1, The above variable resistor is a rotary type connected to the rotation axis of the above worm, and A micro-dispensing lubricant injector with a variable resistor, characterized in that the lifting position of the plunger by the variable resistor is confirmed according to the degree of rotation of the worm.

4. In Paragraph 1, The above variable resistor is a rotary type connected to the rotation axis of the above worm wheel, and A micro-dispensing lubricant injector with a variable resistor, characterized in that the lifting position of the plunger by the variable resistor is confirmed according to the degree of rotation of the worm wheel.

5. In Paragraph 1, A storage portion filled with lubricating oil, having an injection port at the bottom for injecting the filled lubricating oil; and A micro-discharge lubricant injector with variable resistance, further comprising: a body configured to be provided at the lower part of the storage section and connected to the inlet of the storage section to prevent backflow of lubricant, a discharge port provided at the lower part for discharging injected lubricant, a plunger that moves up and down in a conduit connecting the inlet and the discharge port, and a second ball valve configured to be elastically supported within the plunger.

6. In Paragraph 5, With the plunger raised and the first ball blocking the internal flow path of the first ball valve, When the plunger is lowered to the lowest level by the driving of the motor, the first ball of the first ball valve is lowered and the second ball of the second ball valve is raised, so that the lubricating oil of the storage unit is completely injected into the pipeline, and Thereafter, the plunger is raised again by the reverse drive of the motor, and when it is raised to a set position, the first ball is raised and the second ball is lowered so that the lubricating oil of the pipe is discharged to the discharge port in a set amount. A micro-dispensing lubricant injector with a variable resistor, characterized in that the upward driving of the plunger described above proceeds repeatedly for a set position and number of times.

7. In Paragraph 5, With the plunger raised and the first ball blocking the internal flow path of the first ball valve, The plunger is lowered by the drive of the motor, and when it is lowered to a set position, the lubricating oil of the pipe is injected into the pipe in a set amount, and Thereafter, the plunger is raised again by the reverse drive of the motor, and when it is raised to a set position, the first ball is raised and the second ball is lowered so that the lubricating oil of the pipe is discharged to the discharge port in a set amount. A micro-dispensing lubricant injector with a variable resistor, characterized in that the downward and upward driving of the plunger described above proceeds repeatedly to a set position.

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