Vane pump capable of discharging oil from double end faces

Abstract

The vane pump comprises a pump body, a pump cover, a rotating pin, a variable sliding block, a rotor assembly and a variable spring, the pump body is provided with an oil outlet and a rotor cavity, the rotor cavity is used for containing the variable sliding block, the rotor assembly and the variable spring, and the bottom face of the rotor cavity is provided with a shaft hole, an oil inlet groove and an oil outlet groove. The inner side face of the pump cover is also provided with a shaft hole, an oil inlet groove and an oil outlet groove, the middle of the oil outlet groove protrudes outwards to form an extending oil groove, the rotating pin is arranged in an arc-shaped groove in the side wall of the rotor cavity, the variable sliding block is provided with an arc-shaped groove matched with the rotating pin, and the rotating pin is a hollow pin. The lower end of the rotating pin is communicated with the gathering oil channel on the pump body, and the upper end of the rotating pin is communicated with the extending oil groove on the pump cover. The rotating shaft is arranged to be the hollow pin, and high-pressure oil in the oil outlet groove of the pump cover can be led to the gathering oil channel of the pump body through matching of the hollow shaft and the extending oil groove.

Description

TECHNICAL FIELD

[0001] The utility model relates to the lubricating system of automobile engine, concretely relates to a double end surface oil outlet vane pump. BACKGROUND

[0002] When the displacement of the oil pump is larger, the rotor is designed to be thicker, and the structure of the double end surface oil outlet of the rotor is usually adopted. Figure 1 、 2 As shown in the figure, it is the structure of the conventional swing vane pump, due to the existence of the rotating pin 3, the conventional double end surface oil outlet needs to avoid the position of the rotating pin 3 and the joint surface of the pump body 1 and the pump cover 2, can only set a dark oil channel 7 on the pump cover 2, the high pressure oil in the rotor cavity is guided to the oil collecting channel 8 of the pump body 1, and the dark oil channel 7 is difficult to meet the requirements if being processed through the casting process, therefore, the pump cover 2 is usually drilled in the later period, then an art plug 12 is used to seal the outer side end of the through hole to form the dark oil channel 7, which inevitably increases the manufacturing cost of the pump cover 2. SUMMARY

[0003] The utility model discloses a double end surface oil outlet vane pump with simple structure.

[0004] In order to solve the above technical problems, the utility model discloses the following technical scheme: a double end surface oil outlet vane pump, including pump body, pump cover, rotating pin, variable slide, rotor assembly and variable spring, the pump body is equipped with oil outlet and rotor cavity, and the rotor cavity is used for accommodating variable slide, rotor assembly and variable spring, the bottom surface of the rotor cavity is equipped with shaft hole, oil inlet groove and oil outlet groove, and the oil outlet groove and the oil outlet are communicated through the oil collecting channel, the inner side surface of the pump cover is also equipped with shaft hole, oil inlet groove and oil outlet groove, the middle part of the oil outlet groove is raised to the outside and forms the extension oil groove, the rotating pin is arranged in the arc-shaped recess of the rotor cavity side wall, the variable slide is equipped with an arc-shaped recess matched with the rotating pin, the rotating pin is a hollow pin, the lower end of the rotating pin is communicated with the oil collecting channel on the pump body, and the upper end of the rotating pin is communicated with the extension oil groove on the pump cover.

[0005] In an embodiment, the outer diameter of the rotating pin is greater than the width of the oil collecting channel and the extension oil channel.

[0006] In an embodiment, the outer diameter of the rotating pin is 16mm, and the inner diameter is 10mm.

[0007] In an embodiment, the position of the rotating pin corresponds to the oil outlet.

[0008] In an embodiment, the pump cover is equipped with an oil inlet on the position corresponding to the oil inlet groove.

[0009] In one embodiment, a lubricating oil groove is arranged in the shaft hole of the pump body and the pump cover.

[0010] The utility model discloses a hollow pin is arranged to the rotary shaft, and high pressure oil in the oil outlet groove of pump cover is introduced to the collection oil channel of pump body by hollow shaft, and then is discharged outward through the oil outlet, so that the structural design of pump cover becomes simple, only needs to be outwardly protruded in the middle part of pump cover oil outlet groove and form extension oil groove, makes extension oil groove and hollow rotary pin communicate, and this extension oil groove and oil outlet groove are all disposable by casting process, need not like traditional vane pump and set up process plug in the pump cover drilling hole later, greatly save processing step and cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 The structure diagram of traditional vane pump after removing pump cover;

[0012] Figure 2 The structure diagram of traditional vane pump after removing pump cover;

[0013] Figure 3 The structure diagram of traditional vane pump after removing pump cover;

[0014] Figure 4 The structure diagram of traditional vane pump after removing pump cover;

[0015] Figure 5 The structure diagram of traditional vane pump after removing pump cover;

[0016] Figure 6 The structure diagram of traditional vane pump after removing pump cover;

[0017] The reference signs are:

[0018] 1, pump body;2, pump cover;3, rotary pin;4, variable slide;5, rotor assembly;6, variable spring;7, hidden oil channel;8, collection oil channel;9, oil inlet groove;10, oil outlet groove;11, extension oil groove;12, process plug. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of those skilled in the art, the utility model will be further explained below in combination with embodiments and drawings, and the content mentioned in the embodiment is not the limitation of the utility model.

[0020] It should be noted in advance that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" in this utility model should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figures 3 to 6 As shown, a vane pump with double-end oil outlet includes a pump body 1, a pump cover 2, a rotating pin 3, a variable displacement slider 4, a rotor assembly 5, and a variable displacement spring 6. The pump body 1 has an oil outlet and a rotor cavity. The rotor cavity is used to accommodate the variable displacement slider 4, the rotor assembly 5, and the variable displacement spring 6. The bottom surface of the rotor cavity has a shaft hole, an oil inlet groove 9, and an oil outlet groove 10. The oil outlet groove 10 and the oil outlet are connected by a converging oil passage 8. The inner side of the pump cover 2 also has a shaft hole, an oil inlet groove 9, and an oil outlet groove 10. The middle part of the oil outlet groove 10 protrudes outward to form an extended oil groove 11. The rotating pin 3 is disposed in the rotor cavity. Inside the arc-shaped groove on the side wall, the variable slider 4 is provided with an arc-shaped groove that cooperates with the rotating pin 3. The rotating pin 3 is a hollow pin. The lower end of the rotating pin 3 communicates with the oil collection channel 8 on the pump body 1, and the upper end of the rotating pin 3 communicates with the extended oil groove 11 on the pump cover 2. The outer diameter of the rotating pin 3 is larger than the width of the oil collection channel 8 and the extended oil channel. In this embodiment, the outer diameter of the rotating pin 3 is 16mm and the inner diameter is 10mm. The position of the rotating pin 3 corresponds to the oil outlet. The pump cover 2 is provided with an oil inlet at the position corresponding to the oil inlet groove 9. Lubricating oil grooves are provided in the shaft holes of the pump body 1 and the pump cover 2.

[0022] In this embodiment, by setting the rotating shaft as a hollow pin, the high-pressure oil in the oil outlet groove 10 of the pump cover 2 is led to the collection oil channel 8 of the pump body 1 and then discharged outward through the oil outlet. This simplifies the structural design of the pump cover 2. It is only necessary to form an extended oil groove 11 by protruding outward from the middle of the oil outlet groove 10 of the pump cover 2, so that the extended oil groove 11 is connected to the hollow rotating pin 3. This extended oil groove 11, like the oil outlet groove 10, can be completed in one step by casting process. Unlike traditional vane pumps, it is not necessary to drill holes and set process plugs 12 on the pump cover 2 later, which greatly saves processing steps and costs.

[0023] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

[0024] In order to make the person skilled in the art more conveniently understand the improvement of the utility model relative to the prior art, some drawings and descriptions of the utility model have been simplified, and some other elements have also been omitted in the application file for the sake of clarity, and the person skilled in the art should realize that these omitted elements can also constitute the content of the utility model.

Claims

1. A double-sided face-oiling vane pump characterized by: The pump comprises a pump body (1), a pump cover (2), a rotating pin (3), a variable slider (4), a rotor assembly (5) and a variable spring (6), the pump body (1) is provided with an oil outlet and a rotor cavity, the rotor cavity is used for accommodating the variable slider (4), the rotor assembly (5) and the variable spring (6), the bottom surface of the rotor cavity is provided with a shaft hole, an oil inlet groove (9) and an oil outlet groove (10), the oil outlet groove (10) and the oil outlet are communicated through a collection oil channel (8), the inner side surface of the pump cover (2) is also provided with a shaft hole, an oil inlet groove (9) and an oil outlet groove (10), the middle part of the oil outlet groove (10) is outwardly protruded to form an extended oil groove (11), the rotating pin (3) is arranged in an arc-shaped groove in the side wall of the rotor cavity, the variable slider (4) is provided with an arc-shaped groove matched with the rotating pin (3), the rotating pin (3) is a hollow pin, the lower end of the rotating pin (3) is communicated with the collection oil channel (8) on the pump body (1), and the upper end of the rotating pin (3) is communicated with the extended oil groove (11) on the pump cover (2).

2. The bi- end face oil-exit vane pump according to claim 1, characterized by: The outer diameter of the rotating pin (3) is greater than the width of the collection oil channel (8) and the extended oil channel.

3. Double-end-face oil-outlet vane pump according to claim 1 or 2, characterized in that The outer diameter of the rotating pin (3) is 16 mm, and the inner diameter is 10 mm.

4. The double-sided face-oiling vane pump according to claim 1 or 2, characterized in that: The position of the rotating pin (3) corresponds to the oil outlet.

5. The double-sided face-oiling vane pump according to claim 1 or 2, characterized in that: The pump cover (2) is provided with an oil inlet corresponding to the position of the oil inlet groove (9).

6. The double-sided face-oiling vane pump according to claim 1 or 2, characterized in that: The shaft holes of the pump body (1) and the pump cover (2) are provided with lubricating oil grooves.

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