Oil pump shell sealing structure

Abstract

According to the scheme, the oil pump shell sealing structure comprises a pump body and a pump cover structure, a connecting groove is formed in the top of the pump body, a connecting hole is formed in the bottom of the connecting groove, the connecting hole is used for being communicated with a cavity in the pump body, a lifting sleeve is vertically installed in the connecting hole in a sliding mode, and the lifting sleeve is connected with the pump cover structure. A sealing ring groove is formed in the bottom of the lifting sleeve, a baffle ring is fixedly installed on the inner wall of the connecting hole in a sealed mode, and a first sealing ring is fixedly installed on the top of the baffle ring. Through cooperation of an arc-shaped protrusion on a first column body, an arc-shaped groove in a connecting groove, a connecting ring and a positioning ring groove, the contact area between the two parts is increased, the two parts can be attached more tightly, the two parts are fixed together in a mechanical mode, extra stability is provided, and the service life of the two parts is prolonged. Relative movement caused by vibration or other external force is prevented, a sealing means different from that of a sealing piece is provided, and the sealing piece is assisted in improving the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of oil pump technology, and in particular to an oil pump housing sealing structure. Background Technology

[0002] The oil pump is an important component of the automotive engine lubrication system. Its main function is to draw oil from the oil pan, pressurize it, and deliver it to various parts of the engine that require lubrication, such as crankshaft bearings, camshaft bearings, and piston pins. The oil pump cover usually seals the internal working chamber of the oil pump. When the oil pump needs to be inspected or repaired, the internal mechanical parts can be easily accessed by removing the cover.

[0003] Existing oil pump covers primarily achieve sealing through gaskets and O-rings. The gasket is placed at the connection between the pump cover and the pump body. When the pump cover is tightened with bolts, the gasket is compressed, and the O-ring is embedded in a groove on the pump cover or pump body. When the pump cover is partially inserted into the pump body, the O-ring deforms and tightly fits the contact surface. Both methods have drawbacks: firstly, they function similarly, both relying on sealing elements at the connection point, making them susceptible to failure due to the same factors; secondly, both gaskets and O-rings improve sealing performance through rigid compression, which can easily lead to leakage due to uneven compression. Therefore, we propose an oil pump housing sealing structure to solve this problem. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose an oil pump housing sealing structure.

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

[0006] An oil pump housing sealing structure includes a pump body and a pump cover. The top of the pump body has a connecting groove, and the bottom of the connecting groove has a connecting hole for communicating with a chamber inside the pump body. A lifting sleeve is vertically slidably installed in the connecting hole. The bottom of the lifting sleeve has a sealing ring groove. A retaining ring is fixedly and sealed on the inner wall of the connecting hole. A first sealing ring is fixedly installed on the top of the retaining ring and is adapted to the sealing ring groove. The top of the lifting sleeve has a snap-fit ​​groove, and the bottom inner wall of the snap-fit ​​groove has a through hole. A second sealing ring is fixedly installed on the bottom inner wall of the snap-fit ​​groove.

[0007] Preferably, an inner ring plate is fixedly installed on the inner wall of the connecting hole, an inner ring groove is provided on the outer side of the lifting sleeve, and a plurality of support springs are fixedly connected between the top of the inner ring plate and the top inner wall of the inner ring groove.

[0008] Preferably, the pump cover structure includes a top cover, a column one fixedly connected to the bottom of the top cover, a column two fixedly connected to the bottom of the column one, and the column two being adapted to the snap-fit ​​groove.

[0009] Preferably, the outer side of the first column is provided with multiple arc-shaped protrusions, the inner wall of the connecting groove is provided with multiple arc-shaped grooves, the arc-shaped protrusions are adapted to the arc-shaped grooves, and a sealing sleeve is slidably fitted on the outer side of the first column.

[0010] Preferably, a connecting ring is fixedly installed at the bottom of the first column, and a positioning ring groove is provided on the bottom inner wall of the connecting groove, and the connecting ring is adapted to the positioning ring groove.

[0011] Preferably, multiple triangular plates are fixedly connected to the outer sides of both the top cover and the pump body, and the top of each triangular plate has a threaded hole.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The contact area between the two components is increased by the arc-shaped protrusion on the column and the arc-shaped groove on the connecting groove, as well as the cooperation of the connecting ring and the positioning ring groove, so that the two components can fit more tightly. The two components are fixed together mechanically, providing additional stability and preventing relative movement caused by vibration or other external forces. This is a sealing method that is different from the seal and assists the seal in improving the sealing effect.

[0014] 2. The lifting sleeve moves downwards via the second column, pressing the first sealing ring into the sealing ring groove. This is the same setup as for gaskets and O-rings. Through the lifting sleeve, inner ring plate, and multiple return springs, the return springs, in a compressed state, press the second sealing ring against the connection between the lifting sleeve and the second column. Furthermore, the first column and multiple arc-shaped protrusions work together to stretch the sealing sleeve, increasing the ways to improve the sealing performance. These multiple methods work together to improve the sealing at the connection between the pump body and the cover. Attached Figure Description

[0015] Figure 1 This is a first-view perspective three-dimensional structural diagram of an oil pump housing sealing structure proposed in this utility model;

[0016] Figure 2 This is a second-view perspective three-dimensional structural diagram of an oil pump housing sealing structure proposed in this utility model.

[0017] Figure 3 This is a cross-sectional view of the pump body of the oil pump housing sealing structure proposed in this utility model;

[0018] Figure 4 for Figure 3 A partial enlarged view of part A.

[0019] The attached figures are labeled as follows:

[0020] In the diagram: 1. Pump body; 2. Pump cover structure; 3. Connecting groove; 4. Connecting hole; 5. Lifting sleeve; 6. Sealing ring groove; 7. Retaining ring; 8. Sealing ring one; 9. Snap-fit ​​groove; 10. Through hole; 11. Sealing ring two; 12. Inner ring plate; 13. Support spring; 14. Top cover; 15. Column one; 16. Column two; 17. Sealing sleeve; 18. Connecting ring; 19. Positioning ring groove; 20. Triangular plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 An oil pump housing sealing structure includes a pump body 1 and a pump cover structure 2. The top of the pump body 1 is provided with a connecting groove 3, and the bottom of the connecting groove 3 is provided with a connecting hole 4. The connecting hole 4 is used to communicate with the chamber inside the pump body 1. A lifting sleeve 5 is vertically slidably installed in the connecting hole 4. A sealing ring groove 6 is provided at the bottom of the lifting sleeve 5. A retaining ring 7 is fixedly and sealed on the inner wall of the connecting hole 4. A sealing ring 8 is fixedly installed on the top of the retaining ring 7. The sealing ring 8 is adapted to the sealing ring groove 6. A snap-fit ​​groove 9 is provided on the top of the lifting sleeve 5. A through hole 10 is provided on the bottom inner wall of the snap-fit ​​groove 9. A sealing ring 11 is fixedly installed on the bottom inner wall of the snap-fit ​​groove 9.

[0023] like Figure 3 and Figure 4 As shown, an inner ring plate 12 is fixedly installed on the inner wall of the connecting hole 4, and an inner ring groove is opened on the outer side of the lifting sleeve 5. Multiple support springs 13 are fixedly connected between the top of the inner ring plate 12 and the top inner wall of the inner ring groove.

[0024] It should be noted that after the pump cover structure 2 is inserted into the pump body 1 through the connecting groove 3 and connecting hole 4, the second column 16 is inserted into the snap-fit ​​groove 9 on the lifting sleeve 5, and the lifting sleeve 5 is moved downward until it abuts against the retaining ring 7, and multiple return springs are compressed. At this time, the first sealing ring 8 is inserted into the sealing ring groove 6 and is squeezed. Under the action of the compressed return spring, the lifting sleeve 5 is tightly attached to the bottom end of the second column 16, thereby squeezing the second sealing ring 11 at the connection between the snap-fit ​​groove 9 and the second column 16.

[0025] It should be noted that when the sealing ring is squeezed or stretched, it deforms and fills the tiny gaps and unevenness between the contact surfaces. This deformation allows the sealing ring to better fit the two surfaces, thereby reducing the path of fluid or gas. The squeezing or stretching action increases the pressure between the sealing ring and the contact surfaces, and the higher contact pressure helps to improve the sealing effect.

[0026] like Figure 2 As shown, the pump cover structure 2 includes a top cover 14, a column 15 fixedly connected to the bottom of the top cover 14, a column 2 16 fixedly connected to the bottom of the column 15, and the column 2 16 is adapted to the snap-fit ​​groove 9.

[0027] Multiple arc-shaped protrusions are provided on the outer side of column 15, and multiple arc-shaped grooves are provided on the inner wall of connecting groove 3. The arc-shaped protrusions and arc-shaped grooves are adapted to each other. A sealing ring 17 is slidably sleeved on the outer side of column 15. Column 15 stretches the sealing ring 17 through the arc-shaped protrusions. The arc-shaped grooves make the connection between connecting groove 3 and column 15 more tight. The cooperation between the arc-shaped protrusions and arc-shaped grooves can increase the contact area between column 2 16 and connecting groove 3, distribute the pressure applied to sealing ring 17 more evenly, and prevent pump cover structure 2 from moving or rotating relative to pump body 1.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, a connecting ring 18 is fixedly installed at the bottom of the column 15, and a positioning ring groove 19 is provided on the bottom inner wall of the connecting groove 3. The connecting ring 18 and the positioning ring groove 19 are adapted to each other, which can play a role in positioning the column 15 and also play a role in increasing the sealing.

[0029] like Figure 1 and Figure 2 As shown, multiple triangular plates 20 are fixedly connected to the outer sides of the top cover 14 and the pump body 1. The top of the triangular plate 20 is provided with a threaded hole, which facilitates the fixed connection between the pump cover structure 2 and the pump body 1 by bolts.

[0030] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sealing structure for an oil pump housing, characterized in that, The pump body (1) and pump cover structure (2) are included. The top of the pump body (1) is provided with a connecting groove (3) and the bottom of the connecting groove (3) is provided with a connecting hole (4). The connecting hole (4) is used to communicate with the chamber inside the pump body (1). A lifting sleeve (5) is vertically slidably installed in the connecting hole (4). A sealing ring groove (6) is provided at the bottom of the lifting sleeve (5). A retaining ring (7) is fixedly and sealed on the inner wall of the connecting hole (4). A sealing ring one (8) is fixedly installed on the top of the retaining ring (7). The sealing ring one (8) is adapted to the sealing ring groove (6). A snap-fit ​​groove (9) is provided on the top of the lifting sleeve (5). A through hole (10) is provided on the bottom inner wall of the snap-fit ​​groove (9). A sealing ring two (11) is fixedly installed on the bottom inner wall of the snap-fit ​​groove (9).

2. The oil pump housing sealing structure according to claim 1, characterized in that, An inner ring plate (12) is fixedly installed on the inner wall of the connecting hole (4), and an inner ring groove is opened on the outer side of the lifting sleeve (5). Multiple support springs (13) are fixedly connected between the top of the inner ring plate (12) and the top inner wall of the inner ring groove.

3. The oil pump housing sealing structure according to claim 1, characterized in that, The pump cover structure (2) includes a top cover (14), a column one (15) is fixedly connected to the bottom of the top cover (14), a column two (16) is fixedly connected to the bottom of the column one (15), and the column two (16) is adapted to the snap-fit ​​groove (9).

4. The oil pump housing sealing structure according to claim 3, characterized in that, The outer side of the column (15) is provided with multiple arc-shaped protrusions, and the inner wall of the connecting groove (3) is provided with multiple arc-shaped grooves. The arc-shaped protrusions are adapted to the arc-shaped grooves, and the outer side of the column (15) is provided with a sealing sleeve (17).

5. The oil pump housing sealing structure according to claim 3, characterized in that, A connecting ring (18) is fixedly installed at the bottom of the column (15), and a positioning ring groove (19) is provided on the bottom inner wall of the connecting groove (3). The connecting ring (18) is adapted to the positioning ring groove (19).

6. The oil pump housing sealing structure according to claim 3, characterized in that, Multiple triangular plates (20) are fixedly connected to the outer sides of the top cover (14) and the pump body (1), and the top of the triangular plates (20) is provided with threaded holes.

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