Bowl-shaped plug water plug of engine

Abstract

The utility model relates to the technical field of automobile engines, in particular to an engine bowl-shaped plug water plug which comprises a bowl-shaped plug body, the outer circumferential face of the bowl-shaped plug body at least comprises a second outer circumferential face and a third outer circumferential face, and the third outer circumferential face is located on the side, away from the bottom face of the bowl-shaped plug body, of the second outer circumferential face. The second peripheral face is in interference fit with an engine auxiliary hole, the third peripheral face is provided with a plurality of protrusions protruding out of the second peripheral face in the radial direction of the bowl-shaped plug body, and the third peripheral face is in interference fit with the engine auxiliary hole. The third peripheral face of the device is provided with a plurality of protrusions, in the assembling process, when the outwards-protruding protrusions are extruded into the auxiliary holes, tiny elastic deformation occurs, and therefore the anti-sliding capacity is further improved, and if glue needs to be coated in the assembling process, grooves between the protrusions can better store glue liquid, and the glue liquid is not prone to falling off when the glue liquid needs to be coated in the assembling process. The glue solution storage amount between the bowl-shaped plug body and the inner wall of the fabrication hole is increased, so that the binding force between the bowl-shaped plug body and the fabrication hole is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile engines, in particular to a bowl-shaped water plug for an engine. Background Art

[0002] A bowl plug is a part used to seal process holes to seal liquids (cooling water and engine oil). The bowl plug has an interference fit with the plug hole on the engine cylinder block or cylinder head, thereby sealing water and oil.

[0003] In the prior art, the outer peripheral surface of the bowl-shaped plug is a cylindrical smooth surface, and the bowl-shaped plug and the process hole are sealed by interference fit and / or coated with sealant. Frequent vibrations will occur when the engine is working and when the car is on the road, and frequent vibrations will cause the bowl-shaped plug to slip and fall off. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that frequent vibrations will occur when the engine is working and when the car is on the road, and the frequent vibrations will cause the bowl-shaped plug to slip and fall off, and to propose an engine bowl-shaped plug water plug.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A bowl-shaped water plug for an engine comprises a bowl-shaped plug body, wherein the outer circumferential surface of the bowl-shaped plug body comprises at least a second outer circumferential surface and a third outer circumferential surface, wherein the third outer circumferential surface is located on the side of the second outer circumferential surface away from the bottom surface of the bowl-shaped plug body, wherein the second outer circumferential surface has an interference fit with the engine process hole, and the third outer circumferential surface has a plurality of protrusions radially protruding from the second outer circumferential surface along the bowl-shaped plug body, wherein the third outer circumferential surface has an interference fit with the engine process hole.

[0007] The outer circumferential surface of the bowl-shaped plug body also includes a first outer circumferential surface, which is a bowl-shaped surface. The first outer circumferential surface connects the bottom surface of the bowl-shaped plug body and the second outer circumferential surface.

[0008] The dimension of the second outer peripheral surface along the axial direction of the bowl-shaped plug body is defined as L2, and the dimension of the third outer peripheral surface along the axial direction of the bowl-shaped plug body is defined as L1, wherein L2>L1.

[0009] The outer circumferential surface of the bowl-shaped plug body also includes a fourth outer circumferential surface, which is located on the side of the third outer circumferential surface away from the second outer circumferential surface, and the fourth outer circumferential surface is interference-fitted with the engine process hole.

[0010] The fourth outer peripheral surface has an outer diameter equal to that of the second outer peripheral surface.

[0011] The dimension of the fourth outer peripheral surface along the axial direction of the bowl-shaped plug body is defined as L3, wherein L2>L3.

[0012] The protrusions are striped protrusions arranged along the axial direction of the bowl-shaped plug body.

[0013] The protrusion is an annular protrusion arranged along the circumference of the bowl-shaped plug body.

[0014] The protrusions are convex points that are regularly or irregularly distributed.

[0015] The utility model proposes an engine bowl-shaped water plug, which has the beneficial effect that: the device arranges a smooth second outer peripheral surface and a non-smooth third outer peripheral surface on the outer circumferential surface of the bowl-shaped plug body, and realizes the process hole sealing effect and a certain anti-slip effect through the interference fit of the second outer peripheral surface and the engine process hole. The third outer peripheral surface has multiple protrusions. During the assembly process, when the protrusions are squeezed into the inside of the process hole, they undergo slight elastic deformation, thereby further improving the anti-slip ability, and if glue is required during assembly, the grooves between the protrusions can better store the glue, increase the glue storage capacity between the bowl-shaped plug body and the inner wall of the process hole, thereby further improving the bonding strength between the two. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic structural diagram of the first embodiment of the present invention;

[0018] Figure 3 This is a schematic structural diagram of a second embodiment of the present invention.

[0019] In the figure: first outer peripheral surface 1, second outer peripheral surface 2, third outer peripheral surface 3, fourth outer peripheral surface 4, bowl-shaped plug body 5, and protrusion 6. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Figure 1-Figure 3 A bowl-shaped water plug for an engine includes a bowl-shaped plug body 5. The outer circumferential surface of the bowl-shaped plug body 5 includes at least a second outer circumferential surface 2 and a third outer circumferential surface 3. The third outer circumferential surface 3 is located on the side of the second outer circumferential surface 2 away from the bottom surface of the bowl-shaped plug body 5. The second outer circumferential surface 2 is interference fit with the engine process hole. The third outer circumferential surface 3 has a plurality of protrusions 6 protruding radially from the second outer circumferential surface 2 along the bowl-shaped plug body 5. The third outer circumferential surface 3 is interference fit with the engine process hole.

[0022] The device is provided with a smooth second outer peripheral surface 2 and an unsmooth third outer peripheral surface 3 on the outer peripheral surface of the bowl-shaped plug body. The second outer peripheral surface 2 is interference fit with the engine process hole to achieve the process hole sealing effect and a certain anti-slip effect. The third outer peripheral surface 3 has a plurality of protrusions 6. During the assembly process, the outward protrusions 6 undergo slight elastic deformation when squeezed into the inside of the process hole, thereby further improving the anti-slip ability. If glue is required during assembly, the grooves between the protrusions can better store the glue, increase the glue storage capacity between the bowl-shaped plug body and the inner wall of the process hole, thereby further improving the bonding strength between the two.

[0023] refer to Figure 1 、 Figure 2 The outer circumferential surface of the bowl-shaped plug body 5 also includes a first outer circumferential surface 1, which is a bowl-shaped surface. The first outer circumferential surface 1 connects the bottom surface of the bowl-shaped plug body 5 and the second outer circumferential surface 2. The bowl-shaped surface facilitates the bowl-shaped plug body 5 to be placed in the process hole of the engine.

[0024] As an embodiment, the dimension of the second outer peripheral surface 2 along the axial direction of the bowl-shaped plug body 5 is defined as L2, and the dimension of the third outer peripheral surface 3 along the axial direction of the bowl-shaped plug body 5 is defined as L1, where L2>L1. The sealing of the process hole primarily relies on the interference fit between the smooth surface of the second outer peripheral surface 2 and the inner wall of the process hole. Therefore, the height of the third outer peripheral surface 3 should not be set too high.

[0025] The outer circumference of the bowl-shaped plug body 5 further includes a fourth outer circumferential surface 4, which is located on the side of the third outer circumferential surface 3 away from the second outer circumferential surface 2, and the fourth outer circumferential surface 4 is interference-fitted with the engine process hole. Figure 2 The third outer peripheral surface 3 is arranged between the second outer peripheral surface 2 and the fourth outer peripheral surface 4, so that when the sealing of the second outer peripheral surface 2 fails, the fourth outer peripheral surface 4 can play a double sealing role.

[0026] As an embodiment, the fourth outer peripheral surface 4 has an outer diameter equal to that of the second outer peripheral surface 2 .

[0027] The axial dimension of the fourth outer surface 4 along the bowl-shaped plug body 5 is defined as L3, where L2>L3. The second outer surface 2 of this device serves as the primary sealing surface, while the fourth outer surface 4 serves only as a secondary auxiliary seal, preventing external dust from entering the third outer surface 3.

[0028] refer to Figure 1 、 Figure 2 The protrusion 6 is a striped protrusion arranged along the axial direction of the bowl-shaped plug body 5.

[0029] The protrusion 6 may also be an annular protrusion arranged along the circumference of the bowl-shaped plug body 5 .

[0030] The protrusions 6 may also be in the form of regularly or irregularly distributed protrusions.

[0031] The bowl-shaped plug body of the device can be formed by one-time casting, that is, the convex structure is directly cast; or a smooth bowl-shaped plug can be processed first, and then the convex structure is processed twice by applying pressure.

[0032] The above is only a preferred specific implementation method of the present invention, but the scope of protection of the present invention is not limited to this. Any technical solution, conception, and design obtained by equivalent replacement or modification of the technical solution and utility model concept of the present invention by any technical personnel familiar with the technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. An engine bowl-shaped water plug, comprising a bowl-shaped plug body (5), characterized in that: The outer circumferential surface of the bowl-shaped plug body (5) includes at least a second outer circumferential surface (2) and a third outer circumferential surface (3). The third outer circumferential surface (3) is located on the side of the second outer circumferential surface (2) away from the bottom surface of the bowl-shaped plug body (5). The second outer circumferential surface (2) is interference-fitted with the engine process hole. The third outer circumferential surface (3) has a plurality of protrusions (6) radially protruding from the second outer circumferential surface (2) along the bowl-shaped plug body (5). The third outer circumferential surface (3) is interference-fitted with the engine process hole.

2. The bowl-shaped water plug for an engine according to claim 1, characterized in that: The outer circumferential surface of the bowl-shaped plug body (5) further includes a first outer circumferential surface (1), which is a bowl-shaped surface. The first outer circumferential surface (1) connects the bottom surface of the bowl-shaped plug body (5) and the second outer circumferential surface (2).

3. The bowl-shaped water plug for an engine according to claim 1 or 2, characterized in that: The dimension of the second outer peripheral surface (2) along the axial direction of the bowl-shaped plug body (5) is defined as L2, and the dimension of the third outer peripheral surface (3) along the axial direction of the bowl-shaped plug body (5) is defined as L1, wherein L2>L1.

4. The bowl-shaped water plug for an engine according to claim 3, characterized in that: The outer circumferential surface of the bowl-shaped plug body (5) further comprises a fourth outer circumferential surface (4), the fourth outer circumferential surface (4) being located on a side of the third outer circumferential surface (3) away from the second outer circumferential surface (2), and the fourth outer circumferential surface (4) being interference-fitted with an engine process hole.

5. The bowl-shaped water plug for an engine according to claim 4, characterized in that: The fourth outer peripheral surface (4) has an outer diameter equal to that of the second outer peripheral surface (2).

6. The bowl-shaped water plug for an engine according to claim 4 or 5, characterized in that: The dimension of the fourth outer peripheral surface (4) along the axial direction of the bowl-shaped plug body (5) is defined as L3, wherein L2>L3.

7. An engine bowl-shaped water plug according to claim 1, 2, 4 or 5, characterized in that: The protrusion (6) is a striped protrusion arranged along the axial direction of the bowl-shaped plug body (5).

8. An engine bowl-shaped water plug according to claim 1, 2, 4 or 5, characterized in that: The protrusion (6) is an annular protrusion arranged along the circumference of the bowl-shaped plug body (5).

9. An engine bowl-shaped water plug according to claim 1, 2, 4 or 5, characterized in that: The protrusions (6) are convex points that are regularly or irregularly distributed.

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