CN210858859U - Oil drain plug of oil pan - Google Patents
Oil drain plug of oil pan Download PDFInfo
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- CN210858859U CN210858859U CN201921572236.7U CN201921572236U CN210858859U CN 210858859 U CN210858859 U CN 210858859U CN 201921572236 U CN201921572236 U CN 201921572236U CN 210858859 U CN210858859 U CN 210858859U
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Abstract
The utility model provides an oil pan oil drain plug screw, belongs to engine spare part technical field, the plug screw body comprises plug screw head and plug screw post, plug screw post surface be equipped with connecting thread, the through-hole that link up is seted up at the axle center of plug screw body, the through-hole in seted up first step hole, second step hole and third step hole, second step hole between first step hole and third step hole, first step hole is close to the plug screw post, third step hole be close to plug screw head bottom, the through-hole exports for the oil-out at plug screw body lower extreme, the side of plug screw head is gone up and is installed the coil, second step hole and third step hole between be equipped with the plunger, install return spring between the step face of first step hole and the step face of plunger mouth, the oil-out in be equipped with the disk seat. The oil pan plug screw switch mode can be operated remotely without touching the plug screw by hand.
Description
Technical Field
The utility model relates to an engine parts technical field, concretely relates to oil pan oil drain plug screw.
Background
Lubricating oil is used for lubricating and cooling engine parts, is essential in the use process of an engine, and is generally stored in an engine lubricating oil sump. Lubricating oil has a service life, and the automobile needs to be maintained and replaced when running for a certain mileage or for a certain time, and all the old lubricating oil in the oil pan needs to be discharged during replacement. Therefore, the oil drain plug is arranged at the bottommost part of the oil pan and is in a screwing state at ordinary times, and oil drainage is realized by firstly loosening the plug by using a wrench and then completely loosening the plug by using hands to completely drain lubricating oil.
Chinese patent grant publication no: CN206092105U, date of authorized announcement: 12/04/2017, patent name: the utility model provides an oil drain plug screw assembly, engine and car, this utility model provides an oil drain plug screw, including the oil drain plug screw body: the flange is sleeved on the oil drain plug body, a gasket groove for placing a gasket is formed in the flange, the gasket is arranged in the gasket groove and is made of rubber, the size of the gasket is smaller than that of an accommodating space of the gasket groove, part of the gasket is exposed out of the gasket groove, and the gasket groove are in clearance fit. When screwing up the oil drain plug screw, can guarantee that the gasket has sufficient deformation space, guarantee that the gasket is not conquassated, guarantee the leakproofness of engine oil drain plug screw department. But because the plug screw is in the vehicle bottommost, so operating space is little, and the operation is inconvenient, and the whole journey of unscrewing the plug screw needs to be accomplished by hand, and lubricating oil has higher temperature when releasing, and if the misoperation will scald the skin.
Chinese patent application publication No.: CN 108799521a, application publication date: 11/13/2018, patent name: the invention relates to a semi-closed core general solenoid valve, which comprises a shell with a T-shaped structure, wherein the bottom end of a vertical shell is provided with an oil inlet, the center of a transverse shell is provided with an oil outlet, the vertical shell is provided with an axial valve core, the center of the valve core is provided with an oil duct, the valve core is divided into two sections, one section is fixedly connected and communicated with the oil inlet, the other section is connected with a fixed valve core through a spring, the front end part of a movable valve core is provided with a conical sealing head, and two sides of the sealing head are symmetrically provided with oil; the position of the outer part of the vertical shell corresponding to the valve core is provided with an electromagnet; the invention can realize large current opening and small current maintaining, but the contact is arranged in the vertical shell, and the contact can ignite fuel oil in the shell due to sudden temperature rise after current passing, thereby having potential safety hazard.
Disclosure of Invention
The utility model aims at overcoming current oil drain plug screw-down inconvenience, having the defect and not enough of potential safety hazard, providing an oil pan oil drain plug screw, oil drain easy operation safety.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
an oil drain plug of an oil pan comprises a plug body, wherein the plug body consists of a plug column and a plug head, a connecting thread is arranged on the outer side surface of the plug column, a through hole is formed in the plug body along the center of a shaft, a first step hole, a second step hole and a third step hole are formed in the through hole, the second step hole is arranged between the first step hole and the third step hole, the first step hole is close to the plug column, the third step hole is close to the bottom of the plug head, an outlet of the through hole at the bottom of the plug head is an oil outlet, a coil is arranged on the side surface of the plug head, a plunger is arranged between the second step hole and the third step hole, the plunger is of a cylindrical structure with an open end and a closed end, the upper end of the plunger is a plunger opening and faces the first step hole, and the lower end of the plunger is a closed end, the closed end is a closed surface and faces the bottom of the plug screw head, the plunger opening is of a stepped hole structure, a return spring is arranged between the stepped surface of the first stepped hole and the stepped surface of the plunger opening, the large inner diameter of the first stepped hole is equal to the large inner diameter of the plunger opening and is equal to the outer diameter of the return spring, the plunger is divided into an upper plunger and a lower plunger, the upper plunger comprises a plunger opening and a cylinder wall connected with the plunger opening, the outer diameter of the upper plunger is equal to the large inner diameter of the second stepped hole, the lower plunger comprises a closed end and a cylinder wall connected with the closed end, the outer diameter of the closed end is smaller than the large inner diameter of the second stepped hole, the outer diameter of the cylinder wall of the lower plunger gradually decreases to the outer diameter of the closed end, or the outer diameter of the cylinder wall of the lower plunger is equal to the outer diameter of the closed end, at least one oil hole is formed in the cylinder, the oil outlet in be equipped with the disk seat, the disk seat be the torus, the sealing ring meet with the up end of disk seat, the external diameter of sealing ring is less than or equal to the external diameter of blind end, the internal diameter of sealing ring is greater than the internal diameter of disk seat, the axial height of plunger is less than the distance of the up end of disk seat to the step face in second step hole, the step face distance of the step face of plunger mouth to first step hole is less than return spring's free height.
The valve seat is connected with the oil outlet through threads.
The outer side surface of the valve seat is provided with an annular groove, and a sealing ring is arranged in the annular groove.
And a flow blocking groove is arranged on the lower end surface of the valve seat.
And a rubber pad is arranged on one surface of the screw plug head facing the screw plug column.
And a buffer pad is arranged on the step surface of the second step hole.
The step surface of the third step hole is of a chamfer structure, and the outer side surface of the coil is connected with an electrode pole shoe.
The screw plug head is radially divided into an upper valve body and a lower valve body along the step surface of the second step hole.
An upper disc and a lower disc extend out of the side face of the screw plug head along the upper end face and the lower end face of the coil, the upper disc covers the upper end face of the coil, and the lower disc covers the lower end face of the coil.
The outer surface of the coil is coated with a shell, the upper end of the shell extends to the outer edge of the upper disc, and the lower end of the shell extends to the outer edge of the lower disc.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a but oil pan plug screw switch mode remote operation, it can open or close oil pan plug screw not need the hand to go to touch the plug screw. Because the utility model is provided with the coil, the electrode pole shoe, the plunger and the return spring, when the coil is not electrified, namely the screw plug is in a closed state, the return spring downwards extrudes the plunger, and the sealing ring between the plunger and the valve seat is extruded and deformed under stress, so that no gap exists between the plunger and the valve seat, and lubricating oil can not flow out; current is loaded into the coil through an electrode pole shoe, the solenoid plug is in an open state after the coil is electrified, the coil generates magnetic force, the plunger is upwards sucked to enable the plunger to upwards move and upwards extrude the return spring, a flow path is generated between the plunger and the valve seat at the moment, and lubricating oil flows out along the solenoid plug, the through hole, the plunger, the oil hole and the oil outlet in sequence. The through hole is of a straight-through type, lubricating oil flows out of the oil pan from the self weight of the lubricating oil, and flow resistance is reduced. When a lubricating oil consumption test is carried out, the oil drainage time needs to be accurately controlled and lubricating oil needs to be collected, a remote operation mode is realized through a coil, a plunger and a return spring, a straight-through hole reduces the outflow time of the lubricating oil and the residual of the lubricating oil in the through hole, and the oil drainage loss and the timing error caused by manual operation can be avoided; the multi-layer stepped hole structure is convenient for mounting and fixing internal parts of the screw plug; the outer diameter of the cylinder wall of the lower plunger gradually decreases to the outer diameter of the closed end, or the outer diameter of the cylinder wall of the lower plunger is equal to the outer diameter of the closed end, so that a gap between the cylinder wall of the lower plunger and the inner wall of the through hole is increased, and the flow rate of lubricating oil flowing from the oil hole to the oil outlet is increased.
2. In the utility model, the valve seat is connected with the oil outlet through the screw thread, the plunger presses the valve seat under the closing state of the screw plug, and can move upwards under the opening state of the screw plug, so the installation state of the plunger and the return spring is very important, the installation state of the plunger and the return spring can be well controlled by the screw thread connection between the valve seat and the oil outlet, after the plunger and the return spring are installed, the valve seat is screwed into the oil outlet, the valve seat is firstly contacted with the plunger and then continuously screwed, simultaneously, the closed end of the plunger is extruded by a tool, the deformation amount of the return leaf spring is tested, a certain deformation amount of the return spring is ensured, and the return spring can also continuously deform, the screw thread connection ensures that the valve seat can not be reversely pushed out by the acting force of the return spring, the original position can be kept, if the deformation amount of the return spring is increased, the valve seat is continuously screwed, if, the valve seat can be unscrewed, and the threaded connection is very convenient for controlling the deformation quantity of the return spring.
3. The utility model discloses in be equipped with the ring channel on the disk seat lateral surface, the ring channel in ann have the sealing washer, the inevitable space that can appear in disk seat and the oil-out inner wall, the external diameter of sealing washer is bigger than the oil-out internal diameter, can warp when extrudeing with the oil outlet inner wall, then fill near the space of sealing washer, avoid lubricating oil to flow from the space between oil-out inner wall and the disk seat, the lubricating oil that causes leaks.
4. The utility model discloses in be equipped with the choked flow groove on the lower terminal surface of disk seat, the viscosity of lubricating oil is big, and surface tension is big, and when the outflow oil-out, partial lubricating oil can lead to the surface to remain along the surface diffusion of disk seat, has the error to statistics lubricating oil outflow, and the choked flow groove can prevent lubricating oil along surface diffusion, also can play adjustment disk seat mounting height and supporting role when the disk seat installation simultaneously.
5. The utility model discloses in the rubber pad has been installed in the one side of plug head towards the plug post, be equipped with the blotter on the step face in second step hole. The rubber pad is used for preventing lubricating oil from leaking out of a gap of the connecting thread, the magnetic field is larger after the coil is electrified, the acting force on the plunger is also larger, the buffer pad reduces the impact force on the upper valve body when the plunger moves upwards, and the phenomenon that the plunger opening is impacted and deformed when the plunger works for a long time is avoided.
6. The utility model discloses well plug screw head surface is wrapped up there is the shell, avoids the coil damaged, and when the plug screw head divide into valve body and lower valve body, the shell plays the effect of consolidating and goes up valve body and lower valve body.
7. The utility model discloses in stretch out along the upper and lower terminal surface of coil on the side of plug screw head and have last disc and lower disc, go up disc, lower disc and plug screw head side and formed the groove-shaped structure, the installation and the fixing of the coil of being convenient for.
8. The utility model discloses in the step face in third step hole is the chamfer structure, and because of reasons such as the plunger is less with through-hole inner wall clearance, the viscosity of lubricating oil is higher can cause the lubrication outflow speed slower, and the chamfer structure makes the clearance grow of plunger and through-hole mouth inner wall, lubricating oil can flow the plug screw in a large number after flowing out from the oilhole of plunger.
Drawings
FIG. 1 is a cross-sectional view of a first configuration of the present invention;
fig. 2 is a cross-sectional view of a plug screw body according to a first structure of the present invention;
fig. 3 is a cross-sectional view of the middle plunger 5 of the present invention;
FIG. 4 is a cross-sectional view of the second configuration of the present invention when closed;
FIG. 5 is a cross-sectional view of the second configuration of the present invention when open;
in the figure: 1: plug screw, 101: connection thread, 102: rubber pad, 2: plug screw, 201: through-hole, 202: first stepped hole, 203: second stepped bore, 204: third stepped bore, 205: oil outlet, 206: cushion pad, 207: upper disc, 208: lower disc, 3: coil, 4: return spring, 5: plunger, 501: upper plunger, 502: lower plunger, 503: plunger port, 504: closed section, 505: oil hole, 506: seal ring, 6: valve seat, 601: seal ring, 602: flow-blocking groove, 7: electrode pole shoe, 8: a housing.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1, 2, 3, 4 and 5, an oil drain plug for an oil pan comprises a plug body, the plug body is composed of a plug post 1 and a plug head 2, a connecting thread 101 is arranged on the outer side surface of the plug post 1, the plug body is provided with a through hole 201 along the shaft center, the through hole 201 is internally provided with a first step hole 202, a second step hole 203 and a third step hole 204, the second step hole 203 is arranged between the first step hole 202 and the third step hole 204, the first step hole 202 is close to the plug post 1, the third step hole 204 is close to the bottom of the plug head 2, the outlet of the through hole 201 at the bottom of the plug head 2 is an oil outlet 205, a coil 3 is arranged on the side surface of the plug head 2, a plunger 5 is arranged between the second step hole 203 and the third step hole 204, the plunger 5 is a cylindrical structure with one open end and one closed end, the upper end of the plunger 5 is a plunger opening 503, the plunger opening 503 is open and faces the first stepped hole 202, the lower end of the plunger 5 is a closed end 504, the closed end 504 is a closed surface and faces the bottom of the plunger head 2, the plunger opening 503 is in a stepped hole structure, a return spring 4 is arranged between the stepped surface of the first stepped hole 202 and the stepped surface of the plunger opening 503, the large inner diameter of the first stepped hole 202 and the large inner diameter of the plunger opening 503 are equal and equal to the outer diameter of the return spring 4, the plunger 5 is divided into an upper plunger 501 and a lower plunger 502, the upper plunger 501 comprises the plunger opening 503 and a cylinder wall connected with the plunger opening 503, the outer diameter of the upper plunger 501 is equal to the large inner diameter of the second stepped hole 203, the lower plunger 502 comprises the closed end 504 and a cylinder wall connected with the closed end 504, the outer diameter of the cylinder wall of the closed end 504 is smaller than the large inner diameter of the second stepped hole 203, and the outer diameter of the cylinder wall of the lower plunger 502 gradually decreases to the, or the outer diameter of the cylinder wall of the lower plunger 502 is equal to the outer diameter of the closed end 504, at least one oil hole 505 is formed in the cylinder wall of the lower plunger 502, a sealing ring 506 is arranged on the bottom surface of the closed end 504, a valve seat 6 is arranged in the oil outlet 205, the valve seat 6 is a circular ring body, the sealing ring 506 is connected with the upper end face of the valve seat 6, the outer diameter of the sealing ring 506 is smaller than or equal to the outer diameter of the closed end 504, the inner diameter of the sealing ring 506 is larger than the inner diameter of the valve seat 6, the axial height of the plunger 5 is smaller than the distance from the upper end face of the valve seat 6 to the step face of the second step hole 203, and the distance from the step face of the plunger opening 503 to the step face.
The valve seat 6 is connected with the oil outlet 205 through threads.
An annular groove is arranged on the outer side surface of the valve seat 6, and a sealing ring 601 is arranged in the annular groove.
The lower end surface of the valve seat 6 is provided with a flow blocking groove 602.
A rubber pad 102 is arranged on one surface of the screw plug head 2 facing the screw plug column 1.
A cushion 206 is mounted on the step surface of the second step hole 203.
The step surface of the third step hole 204 is a chamfer structure, and the outer side surface of the coil 3 is connected with an electrode pole shoe 7.
The plug head 2 is divided into an upper valve body and a lower valve body along the radial direction of the step surface of the second step hole 203.
An upper disc 207 and a lower disc 208 extend out of the side face of the plug 2 along the upper end face and the lower end face of the coil 3, the upper disc 207 covers the upper end face of the coil 3, and the lower disc 208 covers the lower end face of the coil 3.
The outer surface of the coil 3 is coated with a casing 8, the upper end of the casing 8 extends to the outer edge of the upper disc 207, and the lower end of the casing 8 extends to the outer edge of the lower disc 208.
The utility model discloses a theory of operation:
referring to fig. 4, when the coil 3 is not energized, that is, the plug screw is in a closed state, the return spring 4 presses the plunger 5 downward, and the sealing ring 506 between the plunger 5 and the valve seat 6 is pressed and deformed, so that no gap exists between the plunger 5 and the valve seat 6, and the lubricating oil cannot flow out;
referring to fig. 5, when the coil 3 is energized, that is, the plug screw is in an open state, the coil 3 generates magnetic force to suck the plunger 5 upward to move the plunger upward and press the return spring 4 upward, a flow path is formed between the plunger 5 and the valve seat 6, the lubricating oil flows out in the direction indicated by the arrow in fig. 2, and the lubricating oil flows out along the plug screw 1, the through hole 201, the plunger 4, the plunger 5, the oil hole 505 and the oil outlet 205 in sequence.
Example 1
Referring to fig. 1, 2 and 3, an oil pan oil drain plug comprises a plug body, the plug body is composed of a plug post 1 and a plug head 2, a connecting thread 101 is arranged on the outer side surface of the plug post 1, the plug body is provided with a through hole 201 along the center of the shaft, the through hole 201 is internally provided with a first step hole 202, a second step hole 203 and a third step hole 204, the second step hole 203 is arranged between the first step hole 202 and the third step hole 204, the first step hole 202 is close to the plug post 1, the third step hole 204 is close to the bottom of the plug head 2, the outlet of the through hole 201 at the bottom of the plug head 2 is an oil outlet 205, a coil 3 is arranged on the side surface of the plug head 2, a plunger 5 is arranged between the second step hole 203 and the third step hole 204, the plunger 5 is a cylindrical structure with an open end and a closed end, the upper end of the plunger 5 is a plunger opening 503, the plunger opening 503 is open and faces the first stepped hole 202, the lower end of the plunger 5 is a closed end 504, the closed end 504 is a closed surface and faces the bottom of the plunger head 2, the plunger opening 503 is in a stepped hole structure, a return spring 4 is arranged between the stepped surface of the first stepped hole 202 and the stepped surface of the plunger opening 503, the large inner diameter of the first stepped hole 202 and the large inner diameter of the plunger opening 503 are equal and equal to the outer diameter of the return spring 4, the plunger 5 is divided into an upper plunger 501 and a lower plunger 502, the upper plunger 501 comprises the plunger opening 503 and a cylinder wall connected with the plunger opening 503, the outer diameter of the upper plunger 501 is equal to the large inner diameter of the second stepped hole 203, the lower plunger 502 comprises the closed end 504 and a cylinder wall connected with the closed end 504, the outer diameter of the cylinder wall of the closed end 504 is smaller than the large inner diameter of the second stepped hole 203, and the outer diameter of the cylinder wall of the lower plunger 502 gradually decreases to the, or the outer diameter of the cylinder wall of the lower plunger 502 is equal to the outer diameter of the closed end 504, at least one oil hole 505 is formed in the cylinder wall of the lower plunger 502, a sealing ring 506 is arranged on the bottom surface of the closed end 504, a valve seat 6 is arranged in the oil outlet 205, the valve seat 6 is a circular ring body, the sealing ring 506 is connected with the upper end face of the valve seat 6, the outer diameter of the sealing ring 506 is smaller than or equal to the outer diameter of the closed end 504, the inner diameter of the sealing ring 506 is larger than the inner diameter of the valve seat 6, the axial height of the plunger 5 is smaller than the distance from the upper end face of the valve seat 6 to the step face of the second step hole 203, and the distance from the step face of the plunger opening 503 to the step face.
The valve seat 6 is connected with the oil outlet 205 through threads.
An annular groove is arranged on the outer side surface of the valve seat 6, and a sealing ring 601 is arranged in the annular groove.
The lower end surface of the valve seat 6 is provided with a flow blocking groove 602.
A rubber pad 102 is arranged on one surface of the screw plug head 2 facing the screw plug column 1.
A cushion 206 is mounted on the step surface of the second step hole 203.
The step surface of the third step hole 204 is a chamfer structure, and the outer side surface of the coil 3 is connected with an electrode pole shoe 7.
Example 2
Referring to fig. 4 and 5, the difference from embodiment 1 is that the plug head 2 is divided into an upper valve body and a lower valve body in the radial direction along the step surface of the second step hole 203.
An upper disc 207 and a lower disc 208 extend out of the side face of the plug 2 along the upper end face and the lower end face of the coil 3, the upper disc 207 covers the upper end face of the coil 3, and the lower disc 208 covers the lower end face of the coil 3.
The outer surface of the coil 3 is coated with a casing 8, the upper end of the casing 8 extends to the outer edge of the upper disc 207, and the lower end of the casing 8 extends to the outer edge of the lower disc 208.
Claims (10)
1. The utility model provides an oil pan oil drain plug screw, includes the plug screw body, the plug screw body constitute by plug screw post (1) and plug screw head (2), the lateral surface of plug screw post (1) is equipped with connecting thread (101), its characterized in that: the screw plug comprises a screw plug body and is characterized in that a through hole (201) is formed in the center of a shaft, a first step hole (202), a second step hole (203) and a third step hole (204) are formed in the through hole (201), the second step hole (203) is formed between the first step hole (202) and the third step hole (204), the first step hole (202) is close to a screw plug column (1), the third step hole (204) is close to the bottom of a screw plug head (2), an outlet of the through hole (201) at the bottom of the screw plug head (2) is an oil outlet (205), a coil (3) is arranged on the side surface of the screw plug head (2), a plunger (5) is arranged between the second step hole (203) and the third step hole (204), the plunger (5) is of a cylindrical structure with one end open and one closed end, the upper end of the plunger (5) is a plunger opening (503), and the plunger opening (503) is open and faces towards the first step hole (202), the lower end of the plunger (5) is a closed end (504), the closed end (504) is a closed surface and faces the bottom of the plunger head (2), the plunger opening (503) is of a stepped hole structure, a return spring (4) is arranged between the stepped surface of the first stepped hole (202) and the stepped surface of the plunger opening (503), the large inner diameter of the first stepped hole (202) and the large inner diameter of the plunger opening (503) are equal and equal to the outer diameter of the return spring (4), the plunger (5) is divided into an upper plunger (501) and a lower plunger (502), the upper plunger (501) comprises the plunger opening (503) and a cylinder wall connected with the plunger opening, the outer diameter of the upper plunger (501) is equal to the large inner diameter of the second stepped hole (203), the lower plunger (502) comprises the closed end (504) and the cylinder wall connected with the closed end (504), and the outer diameter of the closed end (504) is smaller than the large inner diameter of the second stepped hole (203), the outer diameter of the cylinder wall of the lower plunger (502) is gradually reduced to the outer diameter of the closed end (504), or the outer diameter of the cylinder wall of the lower plunger (502) is equal to the outer diameter of the closed end (504), at least one oil hole (505) is formed in the cylinder wall of the lower plunger (502), a sealing ring (506) is arranged on the bottom surface of the closed end (504), a valve seat (6) is arranged in the oil outlet (205), the valve seat (6) is a circular ring body, the sealing ring (506) is connected with the upper end surface of the valve seat (6), the outer diameter of the sealing ring (506) is smaller than or equal to the outer diameter of the closed end (504), the inner diameter of the sealing ring (506) is larger than that of the valve seat (6), the axial height of the plunger (5) is smaller than the distance from the upper end surface of the valve seat (6) to the step surface of the second step hole (203), the distance from the step surface of the plunger opening (503) to the step surface of the first step hole (202) is smaller than the free height of the return spring (4).
2. An oil pan drain plug according to claim 1, characterized in that: the valve seat (6) is in threaded connection with the oil outlet (205).
3. An oil pan drain plug according to claim 1, characterized in that: an annular groove is formed in the outer side surface of the valve seat (6), and a sealing ring (601) is arranged in the annular groove.
4. An oil pan drain plug according to claim 1, characterized in that: and a flow blocking groove (602) is arranged on the lower end surface of the valve seat (6).
5. An oil pan drain plug according to claim 1, characterized in that: a rubber pad (102) is arranged on one surface of the screw plug head (2) facing the screw plug column (1).
6. An oil pan drain plug according to claim 1, characterized in that: a buffer pad (206) is arranged on the step surface of the second step hole (203).
7. An oil pan drain plug according to claim 1, characterized in that: the step surface of the third step hole (204) is of a chamfer structure, and the outer side surface of the coil (3) is connected with an electrode pole shoe (7).
8. An oil pan drain plug according to claim 1, characterized in that: the screw plug head (2) is radially divided into an upper valve body and a lower valve body along the step surface of the second step hole (203).
9. An oil pan drain plug according to claim 1, characterized in that: an upper disc (207) and a lower disc (208) extend out of the side face of the screw plug head (2) along the upper end face and the lower end face of the coil (3), the upper disc (207) covers the upper end face of the coil (3), and the lower disc (208) covers the lower end face of the coil (3).
10. The oil pan drain plug according to claim 9, wherein: the outer surface of the coil (3) is coated with a shell (8), the upper end of the shell (8) extends to the outer edge of the upper disc (207), and the lower end of the shell (8) extends to the outer edge of the lower disc (208).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572236.7U CN210858859U (en) | 2019-09-20 | 2019-09-20 | Oil drain plug of oil pan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921572236.7U CN210858859U (en) | 2019-09-20 | 2019-09-20 | Oil drain plug of oil pan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210858859U true CN210858859U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921572236.7U Active CN210858859U (en) | 2019-09-20 | 2019-09-20 | Oil drain plug of oil pan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210858859U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238165A (en) * | 2020-09-27 | 2021-01-19 | 李炬 | Disposable stamping die of new energy automobile piece of bending |
-
2019
- 2019-09-20 CN CN201921572236.7U patent/CN210858859U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112238165A (en) * | 2020-09-27 | 2021-01-19 | 李炬 | Disposable stamping die of new energy automobile piece of bending |
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