CN212691460U - Oil outlet channel structure of variable displacement oil pump - Google Patents

Abstract

The utility model provides a variable discharge capacity oil pump's oil outlet channel structure belongs to oil pump technical field. The oil outlet channel structure solves the technical problems that an oil outlet channel structure of the existing variable displacement oil pump is large in resistance and not compact in structure. The oil outlet channel structure of the variable displacement oil pump comprises a pump shell and a pump cover which are mutually covered, wherein a rotating pin is arranged on the pump shell or the pump cover, a variable sliding block which can swing around the rotating pin and adjust the working efficiency of the oil pump is arranged between the pump shell and the pump cover, and an oil outlet groove I is arranged on the pump shell. The structure ensures that the pumped engine oil has lower kinetic energy loss due to a larger flow cross section, and improves the space compactness of the engine oil pump.

Description

Oil outlet channel structure of variable displacement oil pump

Technical Field

The utility model belongs to the technical field of the oil pump, a go out oily access structure of variable discharge capacity oil pump is related to.

Background

With the increasing development and popularization of the variable displacement technology of the oil pump of the engine lubrication system, the vane type oil pump is widely applied. The working state of the oil pump is adjusted by arranging the variable sliding block which can eccentrically swing relative to the rotor in the vane type oil pump, and the power for driving the variable sliding block to swing is controlled by the electromagnetic valve, so that the requirements of different working conditions can be met.

For example, chinese patent publication No. CN202991485U discloses a combined stator of a main pump core, which is composed of a pump case 1, a rectangular sealing strip 2, a circular rubber rod 3, a rotary positioning pin 4, a variable slider 5, and a variable spring 6; the rectangular sealing strip 2 is tightly attached to the left side of the circular rubber rod 3; the round rubber rod 3 is arranged on the variable sliding block 5; the rotary positioning pin 4 is arranged in a positioning pin mounting groove of the pump shell 1; the variable displacement slide block 5 is arranged in a slide block mounting groove of the pump shell 1; the variable spring 6 is installed in a variable spring installation groove of the pump case 1.

The structure can realize the engine oil discharge, but the section of the oil outlet channel of the engine oil is small, so that the flow resistance is large.

Disclosure of Invention

The utility model discloses to the above-mentioned problem that prior art exists, provide a variable discharge capacity oil pump's oily access structure that produces, the utility model aims to solve the technical problem that: how to reduce the oil outlet energy loss and improve the compact structure.

The purpose of the utility model can be realized by the following technical proposal:

an oil outlet channel structure of a variable displacement oil pump comprises a pump shell and a pump cover which are mutually covered, wherein a rotating pin is arranged on the pump shell or the pump cover, a variable sliding block which can swing around the rotating pin and adjust the working efficiency of the oil pump is arranged between the pump shell and the pump cover, and an oil outlet groove I is arranged on the pump shell.

The pump shell and the pump cover are mutually covered to form a relatively closed working environment of the oil pump, a variable sliding block in the variable displacement oil pump can realize the adjustment of the working efficiency of the oil pump through the eccentric swing of a rotor relative to the oil pump, the variable sliding block can swing around a rotating pin arranged on the pump shell or the pump cover to ensure the stable track, a first oil outlet groove is arranged on the pump shell, and a second oil outlet groove is arranged on the pump cover, so that the engine oil pumped by a rotor blade can flow out through the first oil outlet groove and the second oil outlet groove, the flow rate is increased conveniently, the first oil outlet groove and the second oil outlet groove are communicated by arranging an oil hole on the rotating pin, an engine oil flow passage is skillfully integrated on the rotating pin, the large circulation section is ensured, the pumped engine oil has low kinetic energy loss, and the space.

In the oil outlet channel structure of the variable displacement oil pump, the rotating pin is fixedly arranged on the pump shell, the pump cover is provided with an insertion hole which can be matched with the rotating pin in shape, the insertion hole is communicated with the oil outlet groove II, and the end part of the rotating pin protrudes out of the pump shell and is inserted into the insertion hole. The pump cover is provided with the jack matched with the shape of the rotary pin, so that the rotary pin fixedly arranged on the pump shell is inserted into the jack, and the positioning effect can be provided for the pump shell and the pump cover through the rotary pin while the communication effect of the oil hole and the oil groove on the rotary pin is ensured.

In the oil outlet channel structure of the variable displacement oil pump, the peripheral side wall of the variable slider is provided with an arc-shaped groove, the shape of the arc-shaped groove is matched with that of the rotating pin, and the inner wall of the arc-shaped groove is always attached to the peripheral surface of the rotating pin. The peripheral side wall provided with the variable sliding block is provided with the arc-shaped groove, so that the shape of the arc-shaped groove is matched and attached with the shape of the rotating pin, the inner wall of the arc-shaped groove of the variable sliding block in the swinging process can be attached and sealed with the outer peripheral face of the rotating pin, the machine oil with different pressures in different areas in the oil pump is prevented from flowing through the matching position between the rotating pin and the variable sliding block, and the working stability is ensured.

In the oil outlet passage structure of the variable displacement oil pump, the oil hole penetrates along the axial direction of the rotation pin and is arranged coaxially with the rotation pin. Through setting up the oilhole and link up along the axial of rotatory round pin and arrange with the axle center with rotatory round pin, can guarantee like this that the bearing state everywhere in rotatory round pin periphery is even unanimous, make the more smooth and easy resistance of circulation industry of engine oil littleer simultaneously, also reduced the processing degree of difficulty of rotatory round pin in addition.

In the oil outlet channel structure of the variable displacement oil pump, the ratio of the diameter size of the oil hole to the diameter size of the rotating pin is 1: 1.1-1: 2. By setting the ratio of the diameter size of the oil hole to the diameter size of the rotating pin to be within the range of 1: 1.1-1: 2, the flow loss of the engine oil can be controlled to be in a low state under the condition that the mechanical strength of the rotating pin is ensured.

In the oil outlet passage structure of the variable displacement oil pump, the rotating pin is welded and fixed to the pump housing or the pump cover. Through setting up rotatory round pin and pump case or pump cover welded fastening, pump case or pump cover accessible casting process production like this, and the rotatory round pin can be formed by pipe fitting cutting process, reduces the technology degree of difficulty.

Compared with the prior art, the utility model has the advantages as follows:

according to the oil outlet channel structure of the variable displacement oil pump, the oil outlet groove I is communicated with the oil outlet groove II by arranging the oil hole on the rotating pin, so that an oil flow channel is skillfully integrated on the rotating pin, a larger circulation section is ensured, the pumped oil has lower kinetic energy loss, and the space compactness of the oil pump is improved.

Drawings

Fig. 1 is a schematic partial perspective view of an oil outlet passage structure of the variable displacement oil pump.

Fig. 2 is a perspective view of the pump case and the rotation pin.

Fig. 3 is a perspective view of a pump cap engaged with a single rotation pin.

In the drawings, 1, a pump casing; 11. an oil outlet groove I;

2. a pump cover; 21. an oil outlet groove II; 22. a jack;

3. a rotation pin; 31. an oil hole;

4. a variable slider; 41. an arc-shaped groove.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-3, the oil outlet channel structure of the variable displacement oil pump includes a pump case 1 and a pump cover 2 which are covered with each other, a rotation pin 3 is arranged on the pump case 1 or the pump cover 2, a variable slider 4 which can swing around the rotation pin 3 and adjust the working efficiency of the oil pump is arranged between the pump case 1 and the pump cover 2, an oil outlet groove i 11 is arranged on the pump case 1, an oil outlet groove ii 21 is arranged on the pump cover 2, and an oil hole 31 which can communicate the oil outlet groove i 11 with the oil outlet groove ii 21 is arranged on the rotation pin 3. The pump shell 1 and the pump cover 2 are mutually covered to form a relatively closed oil pump working environment, the variable sliding block 4 in the variable displacement oil pump can adjust the working efficiency of the oil pump through eccentric swinging of a rotor of the relative oil pump, the variable sliding block 4 swings around a rotating pin 3 arranged on the pump shell 1 or the pump cover 2 to ensure stable track, the pump shell 1 is provided with an oil outlet groove I11, and the pump cover 2 is provided with an oil outlet groove II 21, so that the engine oil pumped out through the rotor blades can flow out through the oil outlet groove I11 and the oil outlet groove II 21, and the passing flow can be increased. The oil outlet groove I11 is communicated with the oil outlet groove II 21 by arranging the oil hole 31 on the rotating pin 3, so that an engine oil flow passage is skillfully integrated on the rotating pin 3, a larger flow cross section is ensured, the pumped engine oil has lower kinetic energy loss, and the space compactness of the engine oil pump is improved. Further, the rotating pin 3 is fixedly arranged on the pump shell 1, the pump cover 2 is provided with an insertion hole 22 which can be matched with the rotating pin 3 in shape, the insertion hole 22 is communicated with the oil outlet groove II 21, and the end part of the rotating pin 3 protrudes out of the pump shell 1 and is inserted into the insertion hole 22. Through set up on pump cover 2 with the jack 22 of the shape adaptation of rotatory round pin 3, make the rotatory round pin 3 that sets firmly on pump case 1 insert and establish in jack 22, can provide the positioning action for pump case 1 and pump cover 2 assembly through rotatory round pin 3 when guaranteeing rotatory round pin 3 upper oil hole 31 and the two intercommunication effects of oil groove like this. The peripheral side wall of the variable slider 4 is provided with an arc-shaped groove 41, the shape of the arc-shaped groove 41 is matched with the shape of the rotating pin 3, and the inner wall of the arc-shaped groove 41 is always attached to the peripheral surface of the rotating pin 3. The peripheral side wall provided with the variable sliding block 4 is provided with the arc-shaped groove 41, so that the shape of the arc-shaped groove 41 is matched and attached with the shape of the rotating pin 3, the variable sliding block 4 is ensured to be attached and sealed with the outer peripheral surface of the rotating pin 3 in the swinging process, the engine oil with different pressures in different areas in the engine oil pump is prevented from flowing through the matching part between the rotating pin 3 and the variable sliding block 4, and the working stability is ensured. Preferably, the oil hole 31 penetrates in the axial direction of the rotation pin 3 and is arranged coaxially with the rotation pin 3. Through setting up oilhole 31 and link up and arrange with the axis of rotation pin 3 along the axial of rotation pin 3, can guarantee like this that the bearing state everywhere in rotation pin 3 periphery is even unanimous, make the more smooth and easy resistance of circulation industry of engine oil littleer simultaneously, also reduced the processing degree of difficulty of rotation pin 3 in addition. The ratio of the diameter dimension of the oil hole 31 to the diameter dimension of the rotation pin 3 is 1: 1.5. By setting the ratio of the diameter dimension of the oil hole 31 to the diameter dimension of the rotation pin 3 to 1:1.5, the flow loss of the engine oil can be controlled in a low state while ensuring the mechanical strength of the rotation pin 3. The rotation pin 3 is welded and fixed to the pump housing 1. Through setting up rotatory round pin 3 and pump case 1 welded fastening, pump case 1 accessible casting process production like this, and rotatory round pin 3 can be formed by pipe fitting cutting process, reduces the technology degree of difficulty.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. The oil outlet channel structure of the variable displacement oil pump comprises a pump shell (1) and a pump cover (2) which are mutually covered, wherein a rotating pin (3) is arranged on the pump shell (1) or the pump cover (2), a variable sliding block (4) which can swing around the rotating pin (3) and adjust the working efficiency of the oil pump is arranged between the pump shell (1) and the pump cover (2), and an oil outlet groove I (11) is arranged on the pump shell (1).

2. The structure of the oil outlet channel of the variable displacement oil pump according to claim 1, wherein the rotating pin (3) is fixedly arranged on the pump housing (1), the pump cover (2) is provided with a jack (22) which can be matched with the shape of the rotating pin (3), the jack (22) is communicated with the second oil outlet groove (21), and the end part of the rotating pin (3) protrudes out of the pump housing (1) and is inserted into the jack (22).

3. The oil outlet channel structure of the variable displacement oil pump according to claim 1, wherein the outer peripheral side wall of the variable displacement slider (4) is provided with an arc-shaped groove (41), the shape of the arc-shaped groove (41) is matched with the shape of the rotating pin (3), and the inner wall of the arc-shaped groove (41) is always attached to the outer peripheral surface of the rotating pin (3).

4. The discharge passage structure of a variable displacement oil pump according to claim 1, 2, or 3, characterized in that the oil hole (31) penetrates in the axial direction of the rotation pin (3) and is arranged coaxially with the rotation pin (3).

5. The oil outlet channel structure of the variable displacement oil pump according to claim 4, wherein the ratio of the diameter size of the oil hole (31) to the diameter size of the rotation pin (3) is 1: 1.1-1: 2.

6. The discharge passage structure of a variable displacement oil pump according to claim 1, wherein the rotation pin (3) is welded and fixed to the pump housing (1) or the pump cover (2).

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