CN216788937U

CN216788937U - Oil drainage screw for repairing thread sliding thread of oil pan

Info

Publication number: CN216788937U
Application number: CN202220316739.3U
Authority: CN
Inventors: 孟杰; 丁安贵
Original assignee: Qingdao Jianbang Automobile Technology Co ltd
Current assignee: Qingdao Jianbang Automobile Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-06-21
Anticipated expiration: 2032-02-16

Abstract

The utility model relates to an oil drain screw for repairing thread sliding wires of an oil pan, which comprises a stud, a nut and a neodymium magnet; the center of the stud is provided with a cylindrical through hole, and two ends of the stud are respectively provided with a first external thread and a second external thread; the diameter of first external screw thread is greater than the internal thread diameter of oil pan installation oil drain screw, the neodymium magnet passes through the nut is installed cylindricality through-hole tip, the nut with the second external screw thread side stud threaded connection. The internal thread of the oil drain screw installed on the oil pan is repaired through the self-tapping hole-expanding screw, so that the problem that the oil pan assembly needs to be replaced due to the fact that the oil pan slides is thoroughly solved.

Description

Oil drainage screw for repairing thread sliding thread of oil pan

Technical Field

The utility model relates to a screw, in particular to an oil drain screw for repairing a thread sliding thread of an oil pan.

Background

The existing oil drain screw of oil pans of automobiles, motorcycles and the like is only a common external screw, and the screw is sleeved with the sealing ring and screwed into the oil pan, so that the structure is very simple. When the engine oil is replaced, the screws need to be screwed off.

However, the oil pan is not convenient to use due to the fact that threads of the oil pan are slippery due to the fact that engine oil is replaced for many times all the year round, manual installation is not standard and the like, so that the oil drain screws cannot be installed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides an oil drain screw for repairing the thread sliding thread of an oil pan, which is a high-hardness screw with a self-tapping hole expansion at the bottom.

The specific technical scheme of the utility model is as follows:

an oil drain screw for repairing thread sliding wires of an oil pan comprises a stud, a nut and a neodymium magnet; the center of the stud is provided with a cylindrical through hole, and two ends of the stud are respectively provided with a first external thread and a second external thread; the diameter of first external screw thread is greater than the internal thread diameter of oil pan installation oil drain screw, the neodymium magnet passes through the nut is installed cylindricality through-hole tip, the nut with the second external screw thread side stud threaded connection.

Further, a chip guide groove is formed in the end portion, close to one side of the first external thread, of the stud.

Furthermore, the chip guide grooves at the end part of the stud close to one side of the first external thread are two symmetrically arranged chip guide grooves.

Further, the diameter difference between the first external thread and the internal thread of the oil pan is 0.2 mm.

Further, the cross-sectional area of the neodymium magnet is not smaller than that of the cylindrical through hole.

Further, the oil drain screw further comprises a sealing ring and a sealing gasket, the sealing ring is sleeved on the first external thread, and the sealing gasket is arranged in the nut.

Further, the sealing ring is a skeleton type sealing ring.

Further, the sealing gasket is a rubber gasket or a framework type sealing gasket.

Furthermore, the middle part of the stud is provided with a polygonal column body, and the first external thread and the second external thread are respectively arranged on two sides of the polygonal column body.

The utility model has the beneficial effects that:

the oil pan assembly repairing device thoroughly solves the problem that the oil pan assembly needs to be replaced due to the fact that the oil pan slides, the internal thread of the oil pan installation oil drainage screw is repaired through the self-tapping hole expanding of the first external thread of the oil drainage screw, the timeliness of vehicle repairing is improved, and a large amount of vehicle cost is saved. The neodymium magnet can adsorb more iron chips generated by the running of an engine than the original screw, and has high hardness, high temperature resistance and durable magnetic force. The chip guide groove can guide chips generated in the self-tapping process into the cylindrical through hole, and the chip is prevented from influencing the self-tapping reaming and repairing effect.

Drawings

FIG. 1 is an exploded view of the oil drain screw for repairing the thread slip of an oil pan according to the present invention;

FIG. 2 is a half-sectional view of the oil drain screw for repairing the thread slipping of the oil pan according to the present invention.

Wherein: 1-stud, 1.1-polygonal column, 1.2-first external thread, 1.3-second external thread, 1.4-chip guide groove, 2-nut, 3-sealing ring, 4-sealing gasket and 5-neodymium magnet.

Detailed Description

In order to make those skilled in the art better understand the technical solutions of the present application, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

The terms of orientation such as up, down, left, right, front, and rear in the present specification are established based on the positional relationship shown in the drawings. The corresponding positional relationship may also vary depending on the drawings, and therefore, should not be construed as limiting the scope of protection.

In the present invention, the terms "mounted," "connected," "fixed," and the like are to be understood in a broad sense, and for example, may be fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected or capable of communicating with each other, directly connected, indirectly connected through an intermediate medium, or communicated between two components, or interacting between two components. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment describes an oil drain screw for repairing the thread sliding thread of an oil pan, which is used for repairing the internal thread of the oil drain screw installed on the oil pan and is a screw with high hardness and a self-tapping hole expanding at the bottom.

As shown in fig. 1 and 2, the oil drain screw includes a stud 1, a nut 2, a seal ring 3, a seal 4, and a neodymium magnet 5.

The axial center of the stud 1 is provided with a cylindrical through hole, the axial middle part of the stud 1 is a polygonal column body 1.1, if an outer hexagonal column body is arranged on the left side and the right side of the polygonal column body 1.1, the stud 1 is respectively provided with a first external thread 1.2 and a second external thread 1.3, wherein the first external thread 1.2 is a non-standard thread, the second external thread 1.3 is a standard thread, the diameter of the first external thread 1.2 is larger than the diameter of an internal thread of an oil pan, preferably, the diameter difference between the first external thread 1.2 and the internal thread of the oil pan is 0.2mm, if the difference is too small, the repairing effect is poor, if the difference is too large, the self-tapping force required during repairing is large. The second external thread 1.3 can adopt the internal thread diameter of the oil pan or other standard threads, for example, the first external thread 1.2 is M12.2X1.5, the second external thread 1.3 is M12X1.5, the end of the stud 1 on the side of the first external thread 1.2 is provided with one chip guide groove 1.4 or two chip guide grooves 1.4 which are symmetrically arranged, when the oil drain screw repairs the internal thread of the original aluminum or steel oil pan, the chips are guided into the cylindrical through hole, and the chips are guided out of the cylindrical through hole.

After the internal thread of the oil pan is repaired, the sealing ring 3 is sleeved at the bottom end of the first external thread 1.2 and used for sealing between the stud 1 and the oil pan. A sealing gasket 4 is arranged in the nut 2 and used for sealing between the stud 1 and the nut 2, the nut 2 is in threaded connection with the stud 1 on the side of the second external thread 1.3 to close the cylindrical through hole of the stud 1, and a neodymium magnet 5 is arranged at the end part of the cylindrical through hole through the nut 2 and used for adsorbing iron scrap generated during the operation of an engine.

Preferably, the stud 1 and the nut 2 are made of stainless steel materials above hard SS 304. The sealing ring 3 is a framework type sealing ring, the sealing gasket 4 can be a framework type sealing gasket or a rubber gasket, and the framework type sealing ring and the framework type sealing gasket have certain hardness and are prevented from being extruded and deformed during sealing. The neodymium magnet 5 can absorb 640 times of the self weight, the sectional area of the neodymium magnet is not less than that of the cylindrical through hole, compared with the magnet in the existing oil drain screw, the neodymium magnet 5 is high in hardness and high in temperature resistance due to the addition of rare metal, magnetic force is not easy to fade, and the service life of the oil drain screw can be prolonged.

While the principles of the utility model have been described in detail in connection with the preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing embodiments are merely illustrative of exemplary implementations of the utility model and are not limiting of the scope of the utility model. The details of the embodiments are not to be interpreted as limiting the scope of the utility model, and any obvious changes, such as equivalent alterations, simple substitutions and the like, based on the technical solution of the utility model, can be interpreted without departing from the spirit and scope of the utility model.

Claims

1. An oil drain screw for repairing thread sliding wires of an oil pan is characterized by comprising a stud (1), a nut (2) and a neodymium magnet (5); the center of the stud (1) is provided with a cylindrical through hole, and two ends of the stud (1) are respectively provided with a first external thread (1.2) and a second external thread (1.3); the diameter of first external screw thread (1.2) is greater than the internal thread diameter of oil pan installation oil drain screw, neodymium magnet (5) pass through nut (2) are installed cylindricality through-hole tip, nut (2) with second external screw thread (1.3) side double-screw bolt (1) threaded connection.

2. The oil drain screw for repairing oil pan thread slipping according to claim 1, characterized in that the stud (1) has a chip guide groove (1.4) at the end portion near the first external thread (1.2) side.

3. The oil drain screw for repairing the thread of the oil pan according to claim 2, characterized in that the chip guide grooves (1.4) at the end of the stud (1) near the first external thread (1.2) side are two symmetrically arranged chip guide grooves (1.4).

4. The oil drain screw for repairing a thread slip of an oil pan according to claim 1, wherein a difference between a diameter of the first external thread (1.2) and the diameter of the internal thread of the oil pan is 0.2 mm.

5. The oil drain screw for repairing a threaded slick wire of an oil pan according to claim 1, wherein a sectional area of the neodymium magnet (5) is not smaller than a sectional area of the cylindrical through hole.

6. The oil drain screw for repairing the thread of the oil pan according to claim 1, further comprising a sealing ring (3) and a sealing gasket (4), wherein the sealing ring (3) is sleeved on the first external thread (1.2), and the sealing gasket (4) is arranged in the nut (2).

7. The oil drain screw for repairing thread slipping of an oil pan according to claim 6, wherein the sealing ring (3) is a skeleton-type sealing ring.

8. The oil drain screw for repairing thread slipping of an oil pan according to claim 6, wherein the sealing gasket (4) is a rubber gasket or a skeleton-type sealing gasket.

9. The oil drain screw for repairing the thread of the oil pan according to claim 1, wherein the stud (1) has a polygonal column body (1.1) in the middle, and the first external thread (1.2) and the second external thread (1.3) are respectively arranged on two sides of the polygonal column body (1.1).