Miniature air-cooled diesel engine oil way switch

Abstract

The utility model discloses a miniature air-cooled diesel engine oil way switch, which comprises a valve body and a valve core, a cavity is arranged in the valve body, an oil inlet and an oil outlet which are communicated with the cavity are arranged on the valve body, and the valve core rotates in the valve body to control the on-off of the oil inlet and the oil outlet. The valve element comprises a movable column and a handle which are connected, a positioning protrusion is arranged on the movable column in the circumferential direction, a positioning groove is formed in the inner wall of the valve body, the movable column is movably connected into the cavity so that the positioning groove can be movably connected with the positioning protrusion in a clamped mode, a limiting block is further arranged on the side portion of the handle, and a limiting groove is formed in the side face of the valve body. And the limiting block is arranged in the limiting groove. By means of the mode, the miniature air-cooled diesel engine oil way switch can simplify the structure of the valve element, reduces installation steps, enters the shell through hard extrusion, and improves installation efficiency.

Description

Technical Field

[0001] The utility model relates to the field of micro air-cooled diesel engines, in particular to an oil circuit switch of a micro air-cooled diesel engine. Background Art

[0002] The existing micro air-cooled diesel engine oil circuit switch is mainly composed of a valve body and a valve core located inside the valve body. The valve body is provided with an oil inlet and an oil outlet. The valve core extends into the valve body and rotates with the valve body, and is provided with an oil circuit connected with the oil inlet and the oil outlet. In order to ensure sealing and avoid leakage, a rubber sleeve is provided between the valve core and the valve body, and the rubber sleeve is formed with through holes corresponding to the oil inlet and the oil outlet.

[0003] Patent CN 202120220071 8 discloses a miniature air-cooled diesel engine oil circuit switch, which prevents the sealing sleeve from rotating by forming an anti-rotation structure between the sealing sleeve and the chamber to prevent the sealing sleeve from rotating relative to the chamber, and limits the circumference and axial position by bolts and guide grooves. Although the above-mentioned miniature air-cooled diesel engine oil circuit switch reduces the processing accuracy requirements, it has a complex structure and low installation efficiency. Summary of the invention

[0004] The utility model mainly solves the technical problem of providing a miniature air-cooled diesel engine oil circuit switch, which can simplify the structure of the valve core, reduce the installation steps, and adopt the thermal expansion and contraction principle to hard squeeze into the shell, thereby improving the installation efficiency.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a micro air-cooled diesel engine oil circuit switch, including a valve body and a valve core, the valve body having a chamber, the valve body being provided with an oil inlet and an oil outlet connected to the chamber, the valve core rotating in the valve body to control the on and off of the oil inlet and the oil outlet, the valve core comprising a connected movable column and a handle, a positioning protrusion being provided on the circumference of the movable column, a positioning groove being provided on the inner wall of the valve body, the movable column being movably connected in the cavity so that the positioning groove is movably engaged with the positioning protrusion, a limit block being further provided on the side of the handle, and a limit groove being provided on the side of the valve body, and the limit block being arranged in the limit groove.

[0006] In a preferred embodiment of the present invention, there is a clearance fit between the positioning protrusion and the positioning groove.

[0007] In a preferred embodiment of the present invention, the positioning groove is located at the opening on the right side of the cavity, and the positioning protrusion is located on the right side of the movable column.

[0008] In a preferred embodiment of the present invention, the fitting clearance between the outer wall of the movable column and the inner wall of the valve body is 0.

[0009] In a preferred embodiment of the present invention, a boss structure is provided on the connecting portion between the movable column and the handle, and a gap is provided between the boss structure and the side portion of the valve body.

[0010] In a preferred embodiment of the present utility model, the right end of the valve body has a connecting portion, the limiting groove is formed on the connecting portion, and the limiting groove is an arc-shaped limiting groove.

[0011] In a preferred embodiment of the utility model, the valve core is hard squeezed into the housing according to the principle of thermal expansion and contraction when the valve body is ejected from the mold, thereby connecting the valve body and the valve core.

[0012] In a preferred embodiment of the utility model, the valve core is provided with an oil passage connecting the oil inlet and the oil outlet.

[0013] In a preferred embodiment of the utility model, a groove is formed on the movable column, and a sealing gasket is provided in the groove.

[0014] The beneficial effects of the utility model are as follows: the micro air-cooled diesel engine oil circuit switch of the utility model simplifies the structure of the valve core, the valve core is hard squeezed into the housing when the valve body is demoulded, the installation of the valve body and the valve core is directly completed, and the processing efficiency is improved.

[0015] The utility model discloses a miniature air-cooled diesel engine oil circuit switch, which realizes movable connection between a movable column and a valve body, controls machining accuracy to ensure a gap between the movable column and the valve body, achieves relative movement between the two and satisfies sealing requirements at the same time.

[0016] The utility model discloses a miniature air-cooled diesel engine oil circuit switch, which realizes circumferential limiting of the valve core rotation angle through the limiting groove and the connecting part, realizes axial limiting of the valve core through the positioning protrusion and the positioning groove, simplifies the guide structure of the crude oil bolt and the guide groove, and optimizes the valve core installation structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 This is a structural schematic diagram of a preferred embodiment of the utility model of a miniature air-cooled diesel engine oil circuit switch;

[0019] Figure 2 yes Figure 1 A cross-sectional view of

[0020] Figure 3 This is a schematic diagram of the valve body structure.

[0021] Figure 4 It is a three-dimensional structural diagram of the valve core;

[0022] Figure 5 It is a structural diagram of the valve core;

[0023] The components in the accompanying drawings are marked as follows: 1. valve body, 11. chamber, 12. oil inlet, 13. oil outlet, 14. positioning groove, 15. limit groove, 2. valve core, 21. movable column, 211. positioning protrusion, 212. sealing gasket, 213. O-ring, 22. handle, 221. limit block. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiment of the utility model will be described clearly and completely below. The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification, so that people familiar with this technology can understand and read them, and are not used to limit the limiting conditions that can be implemented in the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effect that can be produced by the utility model and the purpose that can be achieved, should still fall within the scope that the technical content disclosed in the utility model can cover. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and so on quoted in this specification are only for the convenience of narration, and are not used to limit the scope that can be implemented. The change or adjustment of the relative relationship, without substantial change of the technical content, should also be regarded as the scope that can be implemented in the utility model.

[0025] See also Figures 1 to 3 A miniature air-cooled diesel engine oil circuit switch includes a valve body 1 and a valve core 2. The valve body 1 has a chamber 11. The valve body 1 is provided with an oil inlet 12 and an oil outlet 13 connected to the chamber 11. The valve core 2 rotates in the valve body 1 to control the on-off of the oil inlet 12 and the oil outlet. The valve core 2 is provided with an oil circuit channel connecting the oil inlet 12 and the oil outlet 13. The valve core 2 rotates in the valve body 1 to realize the on-off between the oil inlet 12 and the oil outlet 13. The above structure is the conventional control principle of the oil circuit switch, which will not be repeated here.

[0026] The valve core 2 includes a movable column 21 and a handle 22 connected to each other, and the movable column 21 and the handle 22 are an integral structure. The connecting portion of the movable column 21 and the handle 22 has a boss structure, and there is a gap between the boss structure and the side of the valve body 1. When the valve body 1 is ejected from the mold, the valve core 2 is hard squeezed into the shell according to the principle of thermal expansion and contraction, thereby connecting the valve body 1 and the valve core 2. Compared with the existing split assembly structure, the oil circuit switch of the present application is more convenient to install. When the valve body 1 is ejected from the mold, the valve core 2 is directly pressed in to complete the assembly and positioning of the valve core 2, without the need for cumbersome component installation procedures.

[0027] A positioning protrusion 211 is provided on the circumference of the movable column 21, and a positioning groove 14 is provided on the inner wall of the valve body 1. The positioning groove 14 is located at the opening on the right side of the cavity, and the positioning protrusion 211 is located on the right side of the movable column 21. The movable column 21 is movably connected in the cavity, so that the positioning groove 14 and the positioning protrusion 211 are movably engaged. There is a clearance fit between the positioning protrusion 211 and the positioning groove 14. The clearance fit between the positioning protrusion 211 and the positioning groove 14 allows the movable column 21 to rotate relative to the valve body 1. At the same time, the positioning protrusion 211 and the positioning groove 14 limit the axial position of the movable column 21 to prevent the movable column 21 from detaching from the valve body 1.

[0028] Except for the positioning protrusion 211, the clearance between the outer wall of the movable column 21 and the inner wall of the valve body 1 is 0. The movable column 21 and the valve body 1 are sealed to prevent oil leakage. At the same time, lubricating oil is applied to the movable column 21 and the valve body 1 to ensure that the valve core 2 can rotate smoothly relative to the valve body 1. The valve core 2 and the valve body 1 can also be made of self-lubricating materials.

[0029] A limit block 221 is also provided on the side of the handle 22, and a limit groove 15 is provided on the side of the valve body 1, and the limit block 221 is provided in the limit groove 15. The right end of the valve body 1 has a connecting portion, and the limit groove 15 is provided on the connecting portion, and the limit groove 15 is an arc-shaped limit groove. The circumferential rotation angle of the valve core is limited by the cooperation of the limit groove 15 and the limit block 221, and the structure is simple, and the positioning during the assembly process is convenient.

[0030] like Figure 5 The movable column 21 is provided with a square groove, and a sealing pad 212 is provided in the square groove. The sealing pad 212 improves the connection sealing performance of the movable column 21 to prevent leakage between the movable column 21 and the valve body 1 when the valve is closed. The movable column 21 is also provided with an O-ring 213. Figure 5 The positioning protrusion 211 is located above the O-ring 213. The O-ring 213 may also be disposed above the positioning protrusion 211 as required. The positional relationship between the positioning protrusion 211 and the O-ring 213 is not limited to the positional relationship disclosed in the drawings.

[0031] Different from the prior art, the miniature air-cooled diesel engine oil circuit switch of the utility model can simplify the structure of the valve core, reduce the installation steps, adopt hard extrusion to enter the housing, and improve the installation efficiency.

[0032] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A miniature air-cooled diesel engine oil circuit switch, comprising a valve body and a valve core, wherein the valve body has a chamber, the valve body is provided with an oil inlet and an oil outlet connected to the chamber, the valve core rotates in the valve body to control the on and off of the oil inlet and the oil outlet, characterized in that: The valve core includes a movable column and a handle connected to each other, a positioning protrusion is provided on the circumference of the movable column, and a positioning groove is provided on the inner wall of the valve body. The movable column is movably connected in the cavity so that the positioning groove and the positioning protrusion are movably engaged with each other. A limit block is also provided on the side of the handle, and a limit groove is provided on the side of the valve body, and the limit block is arranged in the limit groove.

2. The oil circuit switch for a micro air-cooled diesel engine according to claim 1, characterized in that: There is a clearance fit between the positioning protrusion and the positioning groove.

3. The oil circuit switch for a micro air-cooled diesel engine according to claim 2, characterized in that: The positioning groove is located at the opening on the right side of the cavity, and the positioning protrusion is located on the right side of the movable column.

4. The oil circuit switch for a micro air-cooled diesel engine according to claim 3, characterized in that: The matching clearance between the outer wall of the movable column and the inner wall of the valve body is 0.

5. The oil circuit switch for a micro air-cooled diesel engine according to claim 1, characterized in that: A boss structure is provided on the connection portion between the movable column and the handle, and a gap is provided between the boss structure and the side portion of the valve body.

6. The oil circuit switch for a micro air-cooled diesel engine according to claim 1, characterized in that: The right end of the valve body is provided with a connecting portion, the limiting groove is arranged on the connecting portion, and the limiting groove is an arc-shaped limiting groove.

7. The oil circuit switch of a micro air-cooled diesel engine according to any one of claims 1 to 6, characterized in that: The valve core is hard pressed into the housing when the valve body is ejected from the mold, thereby connecting the valve body and the valve core.

8. The oil circuit switch for a micro air-cooled diesel engine according to claim 7, characterized in that: The valve core is provided with an oil passage connecting the oil inlet and the oil outlet.

9. The oil circuit switch for a micro air-cooled diesel engine according to claim 1, characterized in that: A groove is provided on the movable column, and a sealing pad is provided in the groove.

10. The oil circuit switch for a micro air-cooled diesel engine according to claim 1, characterized in that: The movable column is also provided with an O-type sealing ring.

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