CN210739380U

CN210739380U - Leather cup assembly

Info

Publication number: CN210739380U
Application number: CN201921651352.8U
Authority: CN
Inventors: 张康熙; 牛高峰; 张军前; 刘美红
Original assignee: Xi'an Hongqing Machinery Factory
Current assignee: Xi'an Hongqing Machinery Factory
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-12
Anticipated expiration: 2029-09-29

Abstract

The utility model belongs to the technical field of oil pump sealing, in particular to a leather cup assembly, which comprises an annular inner wall and an annular outer wall, wherein the inner wall is arranged at the inner side of the outer wall, one end of the inner wall is connected with one end of the outer wall, and the other end is open to form an annular open cavity similar to a leather cup; the upper end of the inner wall is provided with a head, one side of the head, which is positioned on the annular open cavity, is provided with a groove, and the groove is provided with an annular spring. The utility model discloses can solve the problem that the sealing member leakproofness of oil pump is not enough and easy inefficacy among the prior art.

Description

Leather cup assembly

Technical Field

The utility model belongs to the technical field of the oil pump is sealed, concretely relates to leather cup subassembly.

Background

The problem of the sealing performance of pump equipment is always a technical problem which puzzles the engineering world, and firstly, the pump equipment is required to have good stability, and secondly, the reliability of the pump equipment is required to be ensured to be high. In a lubricating system of a vehicle, an oil pump works in a complex environment of high temperature, damp and hot, salt mist and strong vibration impact, sealing devices in the pump fail, age and damage are serious, and particularly on a special vehicle, the sealing failure period of the oil pump is short and the use safety is not high due to the severe working condition environment.

The sealing effect of the oil pump sealing element in the prior art is not ideal, oil leakage and oil leakage often occur in use, and failure is caused because the sealing element is crushed or cracked due to over-tight installation. Therefore, the service cycle and the maintenance cycle of the oil pump sealing member in the prior art are relatively short, and the stability is not reliable enough.

SUMMERY OF THE UTILITY MODEL

The utility model provides a leather cup subassembly to solve the problem that the sealing member leakproofness of oil pump is not enough and easily became invalid among the prior art.

The embodiment of the utility model provides a leather cup assembly, including annular inner wall and annular outer wall, the inner wall is located the inboard of outer wall, the one end of inner wall and outer wall is connected, and the other end is open, forms an annular open die cavity like the leather cup;

the upper end of the inner wall is provided with a head, one side, located on the annular open cavity, of the head is provided with a groove, an annular spring is installed on the groove, and the annular spring is used for pressing the inner wall.

As a preferable mode of the present invention, the thickness of the head portion is 2 to 4 times the thickness of the inner wall.

In a preferred embodiment of the present invention, a sharp-angled lip for sealing is provided on the outer side of the head.

As the utility model discloses an preferred mode, the outer wall is vertical setting, the inner wall is to the axle center direction slope of whole leather cup subassembly.

In a preferred embodiment of the present invention, a bushing for reinforcing rigidity is provided inside the outer wall or the inner wall.

As the preferred mode of the utility model, the bush is "L" shape, is in the position that outer wall and inner wall and outer wall are connected.

As an optimal mode of the present invention, the upper end and the lower end of the outer wall are provided with chamfers.

The beneficial effects of the utility model reside in that:

the utility model relates to a leather cup subassembly is the seal assembly above certain type oil pump, and this type oil pump is equipped on the lubricated system in advance of special type vehicle engine. The lubricating oil is used as main equipment on a pre-lubricating system of the special vehicle engine, and provides lubrication guarantee for normal work of the special vehicle engine. The inner wall of the utility model is provided with a head part, the head part is provided with an annular spring for pressing the leather cup, the annular spring provides radial pressure for the leather cup component, the pressure between the leather cup and the rotating shaft is enhanced, and the sealing performance can be greatly improved; the lining is arranged inside the outer wall of the leather cup, so that the main body of the leather cup can be prevented from being crushed or cracked, and only the upper end face of the leather cup is pressed to cause slight plastic deformation in the application process, so that the sealing performance of the leather cup is improved.

Because the application of oil pump leather cup subassembly, fine solution the unsatisfactory this technological problem of oil pump sealing member sealing effect, verify in a large number through inventor's engineering practice, this type leather cup subassembly can play effectual sealed effect in the oil pump, prolongs seal assembly's life cycle, has improved sealed reliability simultaneously.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

wherein, the structure comprises 1 outer wall, 2 annular open cavity, 3 annular spring, 4 head, 5 inner wall, 6 lip and 7 lining.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

The embodiment of the utility model discloses leather cup subassembly, this leather cup subassembly is applied to in the oil pump of vehicle lubricating system, and the preparation material of leather cup can be rubber materials. Referring to fig. 1, the main structure of the leather cup is an annular leather cup with one closed side and the other opened side, and specifically comprises an annular inner wall 5 and an annular outer wall 1, wherein the inner wall 5 is located on the inner side of the outer wall 1, one end of the inner wall and one end of the outer wall are connected to form a closed end, and the other end of the inner wall are opened to form an annular open cavity 2 similar to the leather cup.

The head 4 is provided at the upper end of the inner wall 5, the head 4 is a part of the inner wall 5, the thickness of the head 4 is thicker than the inner wall 5, and the thickness of the head 4 can be 2 to 4 times of the thickness of the inner wall 5. One side that is located cyclic annular open die cavity 2 at head 4 is equipped with the recess, and the structure of recess is the wedge structure, installs annular spring 3 on this recess, and annular spring 3 has certain pretightning force for compress tightly inner wall 5, make the pivot laminating of inner wall 5 and oil pump inseparabler, prevent the fluid seepage.

In order to enhance the sealing performance of the inner wall 5 and the oil pump rotating shaft, a sharp-angle-shaped lip 6 for sealing is further arranged on the outer side of the head part 4. Lip 6 department of leather cup subassembly and the pivot of oil pump are with the interference fit mode assembly, receive the pressure that the assembly produced and the pressure of annular spring 3, and lip 6 department is extruded and is produced certain elastic deformation and plastic deformation, has played and has strengthened sealed effect, and the pretightning force of spring is big more, and then the sealed effect of lip is better. Further, the die cavity of the leather cup assembly is filled with oil liquid when the oil pump works, the oil liquid has certain pressure, and the sealing effect of the lip 6 and the outer wall 1 of the leather cup assembly is better under the action of the oil liquid pressure.

In order to further enhance the sealing performance between the leather cup assembly and the oil pump, the outer wall 1 is vertically arranged to be attached to the pump body, the outer wall 1 and the pump body are in interference fit, and the outer wall 1 of the leather cup generates certain extrusion elastic deformation to enable the outer wall 1 and a cavity of the pump body to generate certain sealing effect; the inner wall 5 inclines towards the axis direction of the whole leather cup assembly, so that the pressure of the inner wall 5 on the rotating shaft of the oil pump can be enhanced, and particularly under the dynamic working condition, the sealing performance of the inclined inner wall structure is better.

Because the leather cup subassembly receives the effort of two upper and lower directions in assembling the oil pump, its upper and lower terminal surface all can be closely compressed tightly rather than the contact surface, consequently there is extrusion deformation leather cup's outer wall 1. In order to prevent the cup assembly from being crushed or fractured under a high-pressure state during long-time work, a bushing for enhancing rigidity is arranged inside the outer wall 1 or the inner wall 5, and due to the fact that a lining ring exists in the cup, the cup assembly has certain strength, and under the action of a pre-tightening force, a main body of the cup assembly cannot be fractured, and only slight deformation is generated by extrusion on the upper end face, so that the sealing enhancing effect is achieved, and oil cannot seep out along the outer wall of the cup. The structure of the bush can be in an L shape and is positioned at the connecting position of the outer wall 1 and the inner wall 5 with the outer wall, so that the leather cup assembly has certain rigidity support in the vertical direction and the horizontal direction, and the leather cup assembly is guaranteed not to deform integrally.

In order to facilitate assembly, chamfers are further arranged at the upper end and the lower end of the outer wall 1 of the leather cup assembly, and the leather cup assembly is conveniently arranged in an oil pump cavity.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A leather cup assembly is characterized by comprising an annular inner wall and an annular outer wall, wherein the inner wall is arranged on the inner side of the outer wall, one end of the inner wall is connected with one end of the outer wall, and the other end of the inner wall is open, so that an annular open cavity similar to a leather cup is formed;

2. A leather bowl assembly according to claim 1, wherein the head portion has a thickness 2 to 4 times the thickness of the inner wall.

3. A leather bowl assembly as defined in claim 1, wherein a sharp angular lip is provided on the outside of said head portion for sealing.

4. A leather cup assembly according to claim 1, wherein said outer wall is vertically disposed, and said inner wall is inclined toward the axial center of the entire leather cup assembly.

5. A leather bowl assembly according to claim 1, wherein a bushing for stiffening is provided inside the outer or inner wall.

6. A leather bowl assembly, according to claim 5, wherein said bushing is "L" shaped, in the outer wall and the position where the inner wall joins the outer wall.

7. A leather bowl assembly according to claim 1, wherein the outer wall is chamfered at upper and lower ends thereof.