Pump head cover and vehicle

Abstract

The utility model discloses a pump head cover cap and a vehicle, the pump head cover cap comprises a cover cap body, the cover cap body comprises an end cover and a side wall, the end cover and the side wall are connected; wherein the side wall is provided with at least one first clamping part, the end cover is provided with at least one second clamping part, the first clamping part is suitable for being connected with a shell of the high-pressure oil pump in a clamping mode, and the second clamping part is suitable for being connected with a pump head of the high-pressure oil pump in a clamping mode. According to the pump head cover disclosed by the embodiment of the utility model, the end cover of the pump head cover is clamped with the pump head of the high-pressure oil pump, and the side wall of the pump head cover is clamped with the shell of the high-pressure oil pump, so that the installation reliability of the pump head cover is improved, and the pump head cover is prevented from rotating circumferentially, namely the pump head cover is prevented from loosening or shaking.

Description

Technical Field

[0001] The utility model relates to the technical field of engines, in particular to a pump head cover and a vehicle. Background Art

[0002] The high-pressure oil pump is installed on the cylinder block of the engine. The pump body of the high-pressure oil pump is often equipped with anti-rust measures, while the pump head has no anti-rust measures due to its special functions.

[0003] In the prior art, a high-pressure pump head cover is provided to prevent rust. However, the oil pump in the prior art is prone to the problem that the pump head cover becomes loose or shakes, thereby affecting its protective and anti-rust functions. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a pump head cover, wherein the end cap of the pump head cover is engaged with the pump head of the high-pressure oil pump, and the side wall is engaged with the housing of the high-pressure oil pump, thereby improving the reliability of the pump head cover installation and preventing loosening or shaking.

[0005] The pump head cover according to the embodiment of the present invention includes: a cover body, the cover body includes a connected end cover and a side wall; wherein, the side wall is provided with at least one first clamping portion, and the end cover is provided with at least one second clamping portion, the first clamping portion is suitable for clamping with the outer shell of the high-pressure oil pump, and the second clamping portion is suitable for clamping with the pump head of the high-pressure oil pump.

[0006] According to the pump head cover of the embodiment of the present invention, the cover body is partially matched with the pump head of the high-pressure oil pump and the outer shell of the high-pressure oil pump, the second clamping portion of the end cover is clamped with the pump head of the high-pressure oil pump, and the first clamping portion of the side wall is clamped with the cover of the high-pressure oil pump, thereby improving the reliability of the installation of the pump head cover to prevent the pump head cover from circumferential rotation, thereby preventing loosening or shaking.

[0007] According to the pump head cover of the embodiment of the present invention, the first clamping portion is constructed as a limiting rib, the cross-section of the limiting rib is constructed as a triangular prism structure, and the cross-section of the triangular prism structure gradually becomes thicker along the circumferential direction from the side close to the center of the end cover to the side close to the side wall.

[0008] According to the pump head cover of the embodiment of the present invention, there are multiple limiting ribs, and the multiple limiting ribs are distributed at intervals along the circumference of the side wall.

[0009] According to the pump head cover of the embodiment of the present invention, the second clamping portion is constructed as a clamping column, the end cover includes a central area and a peripheral area, the clamping column is arranged in the peripheral area, and the central area is suitable for being recessed away from the side wall to form a matching groove, and the matching groove is used to match the shape of the high-pressure oil pump head.

[0010] According to the pump head cover of the embodiment of the present invention, there are multiple clamping columns, and the multiple clamping columns are distributed at intervals along the circumference of the peripheral area.

[0011] According to the pump head cover of the embodiment of the present utility model, the inner side wall of the matching groove is provided with an arc-shaped flange, and the arc-shaped flange extends along the circumference of the matching groove.

[0012] According to the pump head cover of the embodiment of the present invention, there are multiple arc-shaped flanges, and the multiple arc-shaped flanges are distributed on the inner side wall of the matching groove at intervals along the circumference of the matching groove.

[0013] According to the pump head cover of the embodiment of the present invention, the side wall of the pump head cover is provided with an oil outlet avoidance port and an oil return avoidance port, and the oil outlet avoidance port and the oil return avoidance port are distributed on the pump head cover at intervals along the circumferential direction.

[0014] According to the pump head cover of the embodiment of the present invention, the two first clamping portions are respectively close to the two ends of the oil outlet avoidance port along the circumferential direction.

[0015] An embodiment of the present utility model further discloses a vehicle, comprising an engine, wherein the engine comprises a high-pressure oil pump and the above-mentioned pump head cover.

[0016] The advantages of the vehicle described above over the prior art are the same as those of the pump head cover described above over the prior art, which will not be described in detail here.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 It is a top view of the pump head cover of an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the pump head cover of the embodiment of the utility model Figure 1 ;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the pump head cover of the embodiment of the utility model Figure 2 .

[0022] Reference numerals:

[0023] Pump head cover 100,

[0024] Cover body 1 , side wall 11 , first clamping portion 111 , oil outlet avoidance port 112 , oil return avoidance port 113 , end cover 12 , peripheral area 121 , second clamping portion 1211 , central area 122 , arc-shaped flange 1221 . DETAILED DESCRIPTION

[0025] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0028] Reference below Figure 1-Figure 3 Describe the pump head cover 100 according to an embodiment of the present invention. The cover body 1 is partially matched with the pump head of the high-pressure oil pump and the outer shell of the high-pressure oil pump. The second clamping portion 1211 of the end cover 12 is clamped with the pump head of the high-pressure oil pump, and the first clamping portion 111 of the side wall 11 is clamped with the outer shell of the high-pressure oil pump, which improves the reliability of the installation of the pump head cover 100, thereby preventing the pump head cover 100 from rotating circumferentially, and preventing it from loosening or shaking.

[0029] like Figure 1-3As shown, a pump head cover 100 according to an embodiment of the present invention includes: a cover body 1, the cover body 1 includes a connected end cover 12 and a side wall 11; wherein, the side wall 11 is provided with at least one first clamping portion 111, and the end cover 12 is provided with at least one second clamping portion 1211, the first clamping portion 111 is suitable for clamping with the outer shell of the high-pressure oil pump, and the second clamping portion 1211 is suitable for clamping with the pump head of the high-pressure oil pump.

[0030] In practice, the main function of the high-pressure fuel pump head is to provide sufficient fuel pressure to ensure the normal operation of the engine, fuel injection amount adjustment, etc. The pump head cover 100 is used to cover the pump head of the high-pressure fuel pump to protect the pump head of the high-pressure fuel pump and prevent the pump head of the high-pressure fuel pump from rusting. Rusting of the oil pump will lead to a decrease in oil flow, thereby affecting the fuel supply, which may cause the engine to lack oil or insufficient fuel supply, affecting the performance of the vehicle.

[0031] The wall thickness of the pump head cover 100 can be 1-1.8mm, such as 1.5mm. The pump head cover 100 can be made of plastic, rubber, etc. The cover body 1 includes an end cover 12 and a side wall 11, wherein the end cover 12 is mainly used to protect the pump head of the high-pressure oil pump, and the side wall 11 can be used to cooperate with the outer shell of the high-pressure oil pump. The side wall 11 can be provided with one or more first clamping parts 111, and at the same time, the outer shell of the high-pressure oil pump is provided with a first clamping groove that cooperates with the first clamping part 111. When the pump head cover 100 is covered and connected to the high-pressure oil pump in the up and down directions, the first clamping part 111 of the side wall 11 cooperates and clamps with the first clamping groove of the outer shell of the high-pressure oil pump. At this time, the pump head cover 100 can be prevented from circumferentially rotating relative to the pump head of the high-pressure oil pump, thereby preventing the pump head cover 100 from loosening.

[0032] In addition, the end cover 12 of the pump head cover 100 is provided with at least one second clamping portion 1211, and the outer casing of the high-pressure oil pump is also provided with a second clamping groove that cooperates with the second clamping portion 1211. When the pump head cover 100 is connected to the high-pressure oil pump, the second clamping portion 1211 of the pump head cover 100 cooperates with the second clamping groove to further improve the reliability of the connection between the pump head cover 100 and the high-pressure oil pump.

[0033] Therefore, by providing a second clamping portion 1211 on the end cover 12 of the pump head cover 100 and a first clamping portion 111 on the side wall 11, the pump head cover 100 can be connected to the outer casing of the high-pressure oil pump and to the pump head of the high-pressure oil pump, thereby better preventing the pump head cover 100 from loosening due to circumferential rotation.

[0034] In some embodiments, the first clamping portion 111 is constructed as a limiting rib, and the cross-section of the limiting rib is a triangular prism structure. The cross-section of the triangular prism structure gradually thickens along the circumference from the side close to the center of the end cover 12 to the side close to the side wall 11.

[0035] Reference Figure 2 As shown, the limiting rib is constructed as a structure extending along the side wall 11 of the cover body 1 and extending in the direction toward the end cover 12. The cross-section of the limiting rib is constructed as a triangular prism structure. The first clip groove of the high-pressure oil pump housing is also constructed as a clip groove with a triangular prism cross-section. The limiting rib is also constructed of plastic material. When the pump head cover 100 is connected to the pump head of the high-pressure oil pump, the limiting rib of the triangular prism structure is squeezed in the first clip groove, improving the pressure fit effect between the first clip part 111 and the first clip groove. The outer periphery of the first clip part 111 and the inner wall of the first clip groove are interference fit, with a certain friction force of the squeeze fit. The friction force improves the reliability of the fit between the side wall 11 of the pump head cover 100 and the housing of the high-pressure oil pump. In addition, when the pump head cover 100 is disassembled, it is also convenient to disassemble and replace the pump head cover 100.

[0036] In some embodiments, there are multiple limiting ribs, and the multiple limiting ribs are distributed at intervals along the circumference of the side wall 11.

[0037] In practice, the number of limiting ribs is six, and the six limiting ribs are evenly distributed along the inner side of the side wall 11 in the circumferential direction. This not only improves the possibility of preventing circumferential rotation by the snap-fit ​​connection between the side wall 11 of the pump head cover 100 and the housing of the high-pressure oil pump, but also ensures uniform force between the pump head cover 100 and the housing of the high-pressure oil pump. Of course, in actual design, the limiting ribs can also be designed as three, four, or five limiting ribs, etc., to meet the connection reliability while ensuring uniform force between the pump head cover 100 and the pump head of the high-pressure oil pump.

[0038] In some embodiments, the second clamping portion 1211 is constructed as a clamping column, the end cover 12 includes a central area 122 and a peripheral area 121, the clamping column is arranged in the peripheral area 121, and the central area 122 is suitable for being recessed away from the side wall 11 to form a mating groove, and the mating groove is used to match the shape of the high-pressure oil pump head.

[0039] As in practice, the snap-fit ​​column is constructed as a cylindrical structure, and the central area 122 of the pump head cover 100 is recessed to form a mating groove, which cooperates with the pump head of the high-pressure oil pump. For example, the mating groove can be constructed as a stepped structure distributed along the axial direction, and the cross-sectional area of ​​the mating groove gradually decreases from the end close to the side wall 11 to the end away from the side wall 11. That is, when the stepped structure cooperates with the pump head of the high-pressure oil pump, it is adapted to the shape of the pump head of the high-pressure oil pump; at the same time, it can also improve the reliability of the connection between the pump head cover 100 and the pump head of the high-pressure oil pump after the pump head cover 100 is connected to the pump head of the high-pressure oil pump.

[0040] For example, when the pump head cover 100 begins to connect with the pump head of the high-pressure oil pump, the limiting rib of the pump head cover 100 has not yet contacted the first clamping groove of the high-pressure oil pump housing, and at the same time, the clamping column has not yet contacted the second clamping groove of the housing of the high-pressure oil pump. When the bottom wall of the matching groove of the pump head cover 100 gradually approaches the head of the pump head of the high-pressure oil pump, the limiting rib cooperates with the first clamping groove of the housing of the high-pressure oil pump, and at the same time, the clamping column cooperates with the position of the second clamping groove of the high-pressure oil pump, thereby improving the reliability of the cooperation between the pump head cover 100 and the high-pressure oil pump through three different ways of cooperation.

[0041] In addition, the clamping column is arranged in the outer area 121 of the end cover 12. On the basis of satisfying the matching groove of the pump head cover 100 and the local shape of the pump head of the high-pressure oil pump, another position of the pump head of the high-pressure oil pump is clamped with the pump head cover 100. This can prevent circumferential rotation and improve the reliability of the connection between the pump head cover 100 and the pump head of the oil pump because the matching groove and the local shape of the pump head of the high-pressure oil pump match.

[0042] In some embodiments, there are multiple clamping posts, and the multiple clamping posts are distributed at intervals along the circumference of the peripheral area 121.

[0043] like Figure 1 and Figure 2 As shown in , three clamping posts can be provided in the peripheral region 121 of the end cap 12. When the cross-section of the end cap 12 is circular, the angle between the line connecting two adjacent clamping posts and the center of the end cap 12 is 60 degrees, that is, the clamping posts are evenly spaced circumferentially in the peripheral region 121 of the end cap 12, thereby improving the force uniformity of the clamping of the multiple clamping posts with the pump head cover 100. Of course, the axial extension length of the clamping posts can generally be set to be smaller, such as a diameter of Φ4mm and a height of 2mm. By cooperating with the multiple second clamping grooves of the pump head of the high-pressure oil pump, the pump head cover 100 and the pump head of the high-pressure oil pump can be better prevented from circumferential rotation.

[0044] In some embodiments, the inner sidewall 11 of the mating groove is provided with an arc-shaped flange 1221 , and the arc-shaped flange 1221 extends along the circumference of the mating groove.

[0045] The high-pressure oil pump is provided with an arcuate engaging groove, and an arcuate flange 1221 is provided on the inner sidewall 11 of the mating groove and is axially closer to the sidewall 11 and the peripheral region 121 of the end cover 12. This facilitates the engagement of the arcuate flange 1221 with the arcuate engaging groove on the high-pressure oil pump when the mating groove is connected to the pump head of the high-pressure oil pump. When designing the arcuate flange 1221, for example, if the width of the arcuate flange 1221 is 1.5 mm and the height is 0.26 mm, and the center angle of the arc corresponding to the arcuate flange 1221 is 105°, a snap fit is achieved with the arcuate engaging groove corresponding to the pump head of the high-pressure oil pump, preventing the pump head cover 100 from loosening from the pump head.

[0046] In addition, the two sides of the arc-shaped flange 1221 along the circumferential direction can be set as chamfered structures, and the corresponding arc-shaped clamping groove is also set as a chamfered groove, that is, the length of the side of the arc-shaped flange 1221 connected to the inner wall of the matching groove along the circumferential direction is greater than the length of the side of the arc-shaped flange 1221 toward the center of the end cover 12 along the circumferential direction, thereby forming a chamfered structure on both sides in the circumferential direction. Then, when the arc-shaped flange 1221 is connected to the arc-shaped clamping groove of the pump head of the high-pressure oil pump, it can cooperate with the arc-shaped clamping groove more smoothly.

[0047] In some embodiments, there are multiple arc-shaped flanges 1221 , and the multiple arc-shaped flanges 1221 are distributed on the inner sidewall 11 of the matching groove at intervals along the circumference of the matching groove.

[0048] For example, three arc-shaped flanges 1221 are provided along the circumference of the inner wall of the matching groove of the end cover 12, and the three arc-shaped flanges 1221 are evenly spaced, which can improve the uniformity of force. At the same time, on the basis of the cooperation between the first clamping portion 111 and the first clamping groove, and on the basis of the cooperation between the second clamping portion 1211 and the second clamping groove, the cooperation mode of the arc-shaped flange 1221 and the arc-shaped clamping groove of the pump head of the high-pressure oil pump is added, thereby further improving the tightness of the connection between the pump head cover 100 and the high-pressure oil pump, and further preventing the pump head cover 100 from circumferential rotation.

[0049] In some embodiments, the side wall 11 of the pump head cover 100 is provided with an oil outlet avoidance port 112 and an oil return avoidance port 113 , and the oil outlet avoidance port 112 and the oil return avoidance port 113 are distributed on the pump head cover 100 at intervals along the circumferential direction.

[0050] In practice, the high-pressure oil pump has an oil outlet pipeline and an oil return pipeline. The oil outlet pipeline can be extended along the oil outlet avoidance port 112 of the pump head cover 100 to facilitate the connection of the oil outlet pipeline with other structures. The oil outlet avoidance port 112 can be set as an opening in the shape of an arched door, mainly to avoid the oil outlet pipeline of the high-pressure oil pump, and can reduce the friction between the pump head cover 100 and the oil outlet pipeline, thereby increasing the life of the oil outlet pipeline. At the same time, the return oil pipeline is connected to the pump head of the high-pressure oil pump along the return oil avoidance port 113 to ensure the oil outlet and return oil circulation of the high-pressure oil pump. That is, when the pump head cover 100 is set on the pump head of the high-pressure oil pump, it does not affect the setting of the oil outlet pipeline and the return oil pipeline of the high-pressure oil pump.

[0051] In some embodiments, the two first clamping portions 111 are respectively close to two ends of the oil outlet avoidance port 112 along the circumferential direction.

[0052] Reference Figure 3 As shown, when the two first clamping parts 111 are located at the two ends of the oil outlet avoidance port 112 along the circumferential direction, the two second clamping parts 1211 are respectively clamped with the two first clamping grooves of the pump head of the high-pressure oil pump, which can accordingly ensure the tightness of the pump head cover 100 connected to the pump head of the high-pressure oil pump at the oil outlet avoidance port 112, and also reduce the loosening of the pump head cover 100 near the oil outlet avoidance port 112 caused by the large force when the oil outlet pipe moves. The oil outlet avoidance port 112 is also equivalent to limiting the range of movement of the oil outlet pipe, that is, the two first clamping parts 111 are close to the two ends of the oil outlet avoidance port 112 along the circumferential direction, which prevents the pump head cover 100 and the pump head of the high-pressure oil pump from loosening at the oil outlet avoidance port 112, and also improves the stability of the oil outlet pipeline.

[0053] Of course, two first clamping portions 111 may also be designed at both circumferential ends of the oil return avoidance port 113 , which, in conjunction with another first clamping groove of the pump head of the high-pressure oil pump, can also achieve the effect of improving the stability of the oil outlet pipeline.

[0054] An embodiment of the present utility model discloses a vehicle, including an engine, which includes a high-pressure oil pump and the above-mentioned pump head cover 100. When assembling the pump head cover 100, the pump head cover 100 is covered on the pump head of the high-pressure oil pump from top to bottom, and then gently pressed to achieve the snap-fitting of the pump head cover 100 and the pump head of the high-pressure oil pump. The installation is convenient and the reliability of the installation of the pump head cover 100 is improved, thereby preventing the pump head cover 100 from circumferential rotation and loosening.

[0055] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pump head cover, characterized in that: include: A cover body, the cover body comprising connected end covers and side walls; Wherein, the side wall is provided with at least one first clamping portion, and the end cover is provided with at least one second clamping portion, the first clamping portion is suitable for clamping with the housing of the high-pressure oil pump, and the second clamping portion is suitable for clamping with the pump head of the high-pressure oil pump.

2. The pump head cover according to claim 1, characterized in that: The first clamping portion is configured as a limiting rib, the cross section of which is configured as a triangular prism structure, and the cross section of the triangular prism structure gradually becomes thicker along the circumferential direction from a side close to the center of the end cover to a side close to the side wall.

3. The pump head cover according to claim 2, characterized in that: There are multiple limiting ribs, and the multiple limiting ribs are distributed at intervals along the circumference of the side wall.

4. The pump head cover according to claim 1, characterized in that: The second clamping portion is constructed as a clamping column, and the end cover includes a central area and a peripheral area. The clamping column is arranged in the peripheral area, and the central area is suitable for being recessed away from the side wall to form a matching groove, and the matching groove is used to match the shape of the high-pressure oil pump head.

5. The pump head cover according to claim 4, characterized in that: There are a plurality of the clamping posts, and the plurality of the clamping posts are distributed at intervals along the circumference of the peripheral area.

6. The pump head cover according to claim 4, characterized in that: An inner side wall of the matching groove is provided with an arc-shaped flange, and the arc-shaped flange extends along the circumference of the matching groove.

7. The pump head cover according to claim 6, characterized in that: There are multiple arc-shaped flanges, and the multiple arc-shaped flanges are distributed on the inner side wall of the matching groove at intervals along the circumference of the matching groove.

8. The pump head cover according to claim 1, characterized in that: The side wall of the pump head cover is provided with an oil outlet avoidance port and an oil return avoidance port, and the oil outlet avoidance port and the oil return avoidance port are distributed on the pump head cover at intervals along the circumferential direction.

9. The pump head cover according to claim 8, characterized in that: The two first clamping portions are respectively close to two ends of the oil outlet avoidance port along the circumferential direction.

10. A vehicle, characterized in that: The invention comprises an engine, wherein the engine comprises a high-pressure oil pump and a pump head cover according to any one of claims 1 to 9.

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