CN212080836U

CN212080836U - Automobile oil pump rotor

Info

Publication number: CN212080836U
Application number: CN202020547969.1U
Authority: CN
Inventors: 徐海; 胡云峰; 邬全
Original assignee: Yangzhou Yide Machinery Co ltd
Current assignee: Yangzhou Yide Machinery Co ltd
Priority date: 2020-04-15
Filing date: 2020-04-15
Publication date: 2020-12-04
Anticipated expiration: 2030-04-15

Abstract

The utility model discloses an automobile oil pump rotor, which comprises an inner rotor and an outer rotor, wherein the inner rotor is positioned in the outer rotor and is matched with the outer rotor, more than one inner concave tooth is arranged in the outer rotor, a plurality of outer convex teeth which are less than the inner concave teeth are arranged outside the inner rotor, the outer convex teeth and the inner concave teeth can be meshed with each other, a central through hole matched with a shaft piece is arranged at the center of the inner rotor, an arc-shaped connecting surface which is convex towards the center of the outer rotor is arranged between two adjacent inner concave teeth, an arc-shaped contact surface which is convex towards the outer wall of the inner rotor and is matched with the arc-shaped connecting surface is arranged between two adjacent outer convex teeth, a first lightening groove in the shape of a circular ring is arranged at the side edge of each inner concave tooth, a second lightening groove in the shape which is close to the central through hole is arranged at the inner side of each arc-shaped contact, and the surfaces of the outer rotor and the reinforcing ribs are coated with a layer of epoxy resin.

Description

Automobile oil pump rotor

Technical Field

The utility model belongs to the technical field of the technique of an engine fitting and specifically relates to an automobile oil pump rotor.

Background

The oil pump is mainly used in a lubricating system and can force the oil to be sent to an engine moving part from an oil sump; in brief, the oil pump is a component for increasing the pressure of the oil, ensuring a certain amount of oil and forcibly supplying oil to each friction surface; the oil pump is divided into a rotor pump and a gear pump, and the rotor pump has the characteristics of simple and compact structure, small volume, convenient processing, reliable work, long service life and high pump oil pressure, so that the rotor pump is widely applied; the rotor oil pump uses the inner and outer rotors to pump lubricating oil, which is called trochoid gear pump; the rotor type oil pump mainly comprises an inner rotor, an outer rotor, an oil pump body, an oil pump cover, an oil seal and other parts; the driving inner rotor and the driven outer rotor are both arranged in the oil pump shell; the inner rotor has convex teeth, the outer rotor has concave teeth, the inner rotor is fixed on the driving shaft, the outer rotor can freely rotate in the oil pump shell, and a certain eccentric distance is arranged between the outer rotor and the outer rotor. When the oil pump works, the inner rotor drives the outer rotor to rotate towards the same direction; the eccentricity and the tooth profile of the two rotors ensure that the tooth surfaces of the inner rotor and the outer rotor always contact with each other linearly no matter the inner rotor and the outer rotor rotate to any angle, so that a plurality of working cavities are formed between the wheel teeth of the inner rotor and the wheel teeth of the outer rotor; because the rotating speed of the inner rotor is greater than that of the outer rotor, when a certain working cavity rotates from the oil inlet channel, the rotor is disengaged, the volume is gradually increased, the vacuum degree is generated, and the lubricating oil is sucked from the oil inlet channel; the rotor continues to rotate, the lubricating oil is brought to the other side of the oil outlet channel, the rotor is meshed at the moment, the volume of the oil cavity is gradually reduced, the oil pressure is increased, and the oil is extruded out of the teeth and is sent out through the oil outlet channel; along with the continuous work of the oil pump, the oil pressure between the oil seal and the rotor is increased, so that the rotor has enough fatigue strength and structural rigidity, the fatigue strength is insufficient, the rotor is prone to uneven stress, the service life is shortened, if the rigidity is insufficient, the rotor is prone to deformation, the comprehensive performance of the oil pump is affected, the operation efficiency of the oil pump is reduced, meanwhile, the corrosion requirement on the surface is relatively high, but the current rotor does not reach the standard, and improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an automobile oil pump rotor of high strength in order to solve above-mentioned prior art not enough.

In order to achieve the above object, the present invention provides an automobile oil pump rotor, which comprises an inner rotor and an outer rotor, wherein the inner rotor is disposed in the outer rotor and is engaged with the outer rotor, the outer rotor is provided with more than one concave tooth, the inner rotor is provided with one less convex tooth than the concave tooth, the convex tooth and the concave tooth can be engaged with each other, the center of the inner rotor is provided with a central through hole engaged with a shaft, an arc connecting surface protruding toward the center of the rotor is disposed between two adjacent concave teeth, an arc contact surface protruding toward the outer wall of the inner rotor and engaged with the arc connecting surface is disposed between two adjacent convex teeth, a circular first lightening groove is disposed at the side of each concave tooth, a circular second lightening groove close to the central through hole is disposed at the inner side of each arc contact surface, a reinforcing rib extending longitudinally of the inner rotor is disposed between two adjacent second lightening grooves, and the surfaces of the outer rotor and the reinforcing ribs are coated with a layer of epoxy resin, and the radial distance D from the reinforcing ribs to the central through hole is less than 1.5 cm.

Further, improve the bulk strength, the strengthening rib includes the main pipe body, has cup jointed polygonal structure's sleeve pipe outside the main pipe body, the epoxy layer wraps up the main pipe body and sleeve pipe is whole.

Furthermore, abrasion is avoided, and the end face of each outer convex tooth is integrally formed with an arc and serves as a ceramic plate with the end face of the outer convex tooth matched with the inner concave tooth.

Furthermore, the wearing condition is found in real time, and the ceramic wafer is replaced in time, a pressure detector is arranged on the inner side of the ceramic wafer and electrically connected with a controller positioned in the inner rotor, and the controller is electrically connected with the Bluetooth device.

The utility model provides a pair of automobile oil pump rotor reduces the overall cost because alleviate the groove in the structural setup, alleviates to be equipped with the strengthening rib of interior rotor longitudinal extension in order to improve the bulk strength between the groove simultaneously at two adjacent seconds, and the surface of outer rotor and strengthening rib surface all coat have one deck epoxy layer in order to improve anticorrosive effect, consequently through above-mentioned structural design, realize having the advantage of high strength, high wear resistance, corrosion resistance.

Drawings

In order to more clearly illustrate the implementation of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.

FIG. 1 is a schematic view of an overall structure of an automotive oil pump rotor in embodiment 1;

FIG. 2 is a schematic view of the structure of a reinforcement rib in example 2;

FIG. 3 is a schematic view showing the entire structure of an inner rotor in embodiment 3;

fig. 4 is a schematic view of the entire structure of the inner rotor in embodiment 4.

In the reference symbols: the novel rotor comprises an inner rotor 1, an outer rotor 2, inner concave teeth 3, outer convex teeth 4, a central through hole 5, an arc-shaped connecting surface 6, an arc-shaped contact surface 7, a first lightening groove 8, a second lightening groove 9, reinforcing ribs 10, an epoxy resin layer 11, a main pipe body 12, a sleeve 13, a ceramic plate 14, a pressure detector 15, a controller 16 and a Bluetooth device 17.

Detailed Description

The invention will be further described with reference to the following examples.

Example 1:

the automobile oil pump rotor provided by the embodiment, referring to fig. 1, includes an inner rotor 1 and an outer rotor 2, the inner rotor 1 is located in the outer rotor 2 and is matched with each other, more than one concave tooth 3 is arranged in the outer rotor 2, the outer rotor 1 is provided with a plurality of convex teeth 4 which are less than the concave teeth 3, the convex teeth 4 and the concave teeth 3 can be meshed with each other, the center of the inner rotor 1 is provided with a central through hole 5 matched with a shaft member, an arc connecting surface 6 which is convex towards the center of the outer rotor 2 is arranged between two adjacent concave teeth 3, an arc contact surface 7 which is convex towards the outer wall of the inner rotor 1 and is matched with the arc connecting surface 6 is arranged between two adjacent convex teeth 4, a circular first lightening groove 8 is arranged on the side of each concave tooth 3, a circular second lightening groove 9 which is close to the central through hole 5 is arranged on the inner side of each arc contact surface 7, a reinforcing rib 10 longitudinally extending from the inner rotor 1 is arranged between two adjacent second lightening grooves 9, the surface of the outer rotor 2 and the surface of the reinforcing rib 10 are coated with a layer of epoxy resin 11, and the radial distance D from the reinforcing rib 10 to the central through hole 5 is smaller than 1.5 cm.

Because alleviate the groove and reduce overall cost among the structural configuration, be equipped with simultaneously between two adjacent second alleviate grooves 9 one inside rotor 1 longitudinal extension's strengthening rib 10 in order to improve bulk strength, outer rotor 2's surface and strengthening rib 10 surface all coat and have one deck epoxy layer 11 in order to improve anticorrosive effect, consequently through above-mentioned structural design, realize having the advantage of high strength, corrosion resistance.

Example 2:

the automobile oil pump rotor that this embodiment provided, refer to fig. 2, further, improve the bulk strength, strengthening rib 10 is including being responsible for the body 12, has cup jointed polygonized structure's sleeve pipe 13 outside being responsible for the body 12, epoxy layer 11 wraps up being responsible for body 12 and sleeve pipe 13 is whole, through setting up strengthening rib 10 with the area of contact that improves with inner rotor 1 to improve the bulk strength.

Example 3:

the automobile oil pump rotor provided by the embodiment, referring to fig. 3, further, wear is avoided, an arc is integrally formed on the end surface of each convex tooth 4 and serves as a ceramic plate 14 for matching the end surface of each convex tooth 4 with the corresponding concave tooth 3, and the end portion of each convex tooth 4 is provided with the ceramic plate 14 to improve the wear-resisting effect and avoid wear.

Example 4:

the automobile oil pump rotor provided by the embodiment, referring to fig. 4, further, the wearing condition is found in real time, and timely replacement is performed, the pressure detector 15 is arranged on the inner side of the ceramic plate 14, the pressure detector 15 is electrically connected with the controller 16 located in the inner rotor 1, the controller 16 is electrically connected with the bluetooth device 17, through the arrangement of the pressure detector 15, once the ceramic plate 14 is found to be worn, the pressure detector 15 is caused to be squeezed and compared with the preset range of the controller 16, then wireless data sending is performed through the bluetooth device 17, and finally a reminding effect is performed on an automobile central console.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automobile oil pump rotor, includes inner rotor (1) and outer rotor (2), inner rotor (1) is located outer rotor (2) and mutually supports, its characterized in that: more than one inner concave tooth (3) is arranged in the outer rotor (2), a plurality of outer convex teeth (4) which are one less than the number of the inner concave teeth (3) are arranged outside the inner rotor (1), the outer convex teeth (4) and the inner concave teeth (3) can be meshed with each other, a central through hole (5) matched with a shaft part is arranged at the center of the inner rotor (1), an arc-shaped connecting surface (6) which is convex towards the center of the outer rotor (2) is arranged between every two adjacent inner concave teeth (3), an arc-shaped contact surface (7) which is convex towards the outer wall of the inner rotor (1) and is matched with the arc-shaped connecting surface (6) is arranged between every two adjacent outer convex teeth (4), a first annular lightening groove (8) is arranged on the side edge of each inner concave tooth (3), and a second annular lightening groove (9) which is close to the central through hole (5) is arranged on the inner side of each arc-shaped contact surface, be equipped with one between two adjacent second alleviate grooves (9) and inside rotor (1) longitudinal extension's strengthening rib (10), all coat on the surface of outer rotor (2) and strengthening rib (10) surface and have one deck epoxy layer (11), radial interval D of strengthening rib (10) to central through-hole (5) is less than 1.5 cm.

2. The automotive oil pump rotor as set forth in claim 1, characterized in that: the reinforcing rib (10) comprises a main pipe body (12), a sleeve (13) with a polygonal structure is sleeved outside the main pipe body (12), and the main pipe body (12) and the sleeve (13) are completely wrapped by the epoxy resin layer (11).

3. The automotive oil pump rotor as set forth in claim 1, characterized in that: the end surface of each convex tooth (4) is integrally formed with an arc shape and used as a ceramic plate (14) matched with the concave teeth (3) on the end surface of the convex tooth (4).

4. The automotive oil pump rotor as set forth in claim 3, characterized in that: and a pressure detector (15) is arranged on the inner side of the ceramic plate (14), the pressure detector (15) is electrically connected with a controller (16) positioned in the inner rotor (1), and the controller (16) is electrically connected with a Bluetooth device (17).