Oil seal assembly

Abstract

The utility model relates to the field of mechanical part machining equipment, in particular to an oil seal assembly which comprises an oil seal body, an oil seal cover, an oil seal cover and an oil seal cover. An oil pipe is arranged in the oil seal body and is in a bent shape. A one-way assembly is installed in the oil pipe. An oil inlet is formed in the front of the oil seal body, and an oil outlet is formed in the back of the oil seal body; according to the oil seal assembly, a bent oil pipe is arranged in an oil seal body, and a one-way assembly is installed in the oil pipe; the arranged one-way assembly has a one-way channel function, it can be guaranteed that lubricating oil is injected into the position, sleeved with the oil seal body, of a mechanical part through an oil pipe, it can also be guaranteed that when the mechanical part moves in the later period, the injected lubricating oil is temporarily stored in the oil pipe, and leakage is not prone to occurring; therefore, the lubricating oil can be added easily without detaching the oil seal body when the lubricating oil is added to the joint position of the mechanical part in the later period, operation is easy, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the field of mechanical parts processing equipment, in particular to an oil seal assembly. Background Art

[0002] An oil seal, also known as a shaft seal, is a device part used in a machine to prevent fluid (mostly lubricating oil) from escaping from joints (mostly the joint surfaces of parts or rotating shafts).

[0003] At present, most of the materials used to make oil seals are formed by thermoplastic molding of rubber raw materials. In addition to opening a shaft hole at the center of the oil seal and a groove on the surface of the oil seal for quick alignment and installation of the oil seal with mechanical parts, the rest of the oil seal is in a full state, so that the oil seal can be sealed at the joint position to effectively prevent the leakage of lubricating oil.

[0004] However, this type of oil seal also has some defects. For example, as the mechanical parts are used for a long time, the lubricating oil evaporates due to the heat generated by mechanical movement friction. When the lubricating oil needs to be replenished at the joint position, the oil seal needs to be removed again, and the lubricating oil needs to be added to the joint position again. After adding the lubricating oil, the oil seal needs to be reinstalled. This operation process is relatively cumbersome.

[0005] In view of the problems in the above background technology, the utility model aims to provide an oil seal assembly. Utility Model Content

[0006] The purpose of the utility model is to provide an oil seal assembly to solve the problems raised in the above background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An oil seal assembly, the oil seal assembly comprising:

[0009] The oil seal body is in a ring shape; an oil pipe is provided inside the oil seal body, and the oil pipe is in a bent shape; a one-way component is installed inside the oil pipe, which can ensure that lubricating oil is injected into the position of the mechanical parts on which the oil seal body is mounted through the oil pipe, and can also ensure that the injected lubricating oil is temporarily stored in the oil pipe when the mechanical parts are in motion later, and is not prone to leakage; at the same time, an oil inlet is provided on the front side of the oil seal body, and an oil outlet is provided on the back side of the oil seal body; the oil inlet and the oil outlet are respectively located at the two ends of the oil pipe.

[0010] As a further solution of the utility model: the one-way component includes a piston and a compression spring. The piston is slidably installed inside the oil pipe, and an active cavity is opened inside the piston, and a compression spring is placed inside the active cavity.

[0011] As a further solution of the utility model: the surface of the oil seal body is symmetrically provided with alignment grooves, the center of the oil seal body is provided with an axial hole, and the surface of the oil seal body forms fitting grooves at the peripheral position of the axial hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Compared with the oil seals in the related art, the oil seal assembly has the following advantages:

[0014] Based on the structure of the original oil seal, the structural design is improved again. The oil seal body is formed in one step through the design model using the injection molding process. A bent oil pipe is opened inside the oil seal body, and a one-way component is installed inside the oil pipe. The one-way component has a one-way channel function, which can not only ensure that lubricating oil is injected into the position of the mechanical parts with the oil seal body through the oil pipe, but also ensure that the injected lubricating oil is temporarily stored in the oil pipe when the mechanical parts are in motion at a later time, and it is not easy to leak. Therefore, when lubricating oil is added to the joints of the mechanical parts at a later time, the lubricating oil can be easily added without disassembling the oil seal body. The operation is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention.

[0016] Figure 1 It is a front view of the oil seal assembly according to an embodiment of the utility model.

[0017] Figure 2 It is a rear view of the oil seal assembly according to the embodiment of the utility model.

[0018] Figure 3 The figure is a schematic diagram of the internal structure of the oil seal assembly according to an embodiment of the utility model.

[0019] In the figure: 1-oil seal body, 2-alignment groove, 3-fitting groove, 4-axis hole, 5-oil outlet, 6-oil inlet, 7-oil pipe, 8-compression spring, 9-piston. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0021] Example

[0022] See also Figure 1 , Figure 2 and Figure 3 The oil seal assembly provided in the embodiment of the utility model comprises:

[0023] An oil seal body 1, the oil seal body 1 is in a ring shape, and the material of the oil seal body 1 is rubber; the oil seal body 1 is used to seal and isolate the assembled mechanical parts and inject the lubricating oil; an oil pipe 7 is provided inside the oil seal body 1, the oil pipe 7 is bent, and the oil seal body 1 provided with the oil pipe 7 is formed in one step by a design model using a glue injection process; a one-way component is installed inside the oil pipe 7, and the one-way component can ensure that the lubricating oil is injected into the position of the mechanical parts equipped with the oil seal body 1 through the oil pipe 7, and can also ensure that the injected lubricating oil is temporarily stored in the oil pipe 7 when the mechanical parts are in motion at a later stage, and it is not easy to leak; at the same time, an oil inlet 6 is provided on the front side of the oil seal body 1, and an oil outlet 5 is provided on the back side of the oil seal body 1; the opened oil inlet 6 and the opened oil outlet 5 are respectively located at the two ends of the oil pipe 7;

[0024] In the embodiment of the utility model, when the oil seal assembly is used, after the oil seal body 1 is aligned and mounted on the designated position of the parts, lubricating oil is then injected into the oil seal body 1 through the oil inlet 6. The lubricating oil generates hydraulic pressure to drive the one-way assembly to operate, thereby opening the internal channel of the oil pipe 7. After the inside of the oil pipe 7 is opened, the lubricating oil entering the inside of the oil pipe 7 is finally discharged from the oil outlet 5 to the gap position of the installed mechanical parts for lubrication. After the oil supply is stopped at the oil inlet 6, the one-way assembly is restored to the initial state to block the inside of the oil pipe 7. The sealing and isolation operation of the entire oil seal body 1 on the mounted parts is completed. It is ensured that the lubricating oil introduced is temporarily stored in the oil pipe 7 and is not prone to leakage.

[0025] See also Figure 3 In one embodiment of the utility model, the one-way assembly includes a piston 9 and a compression spring 8. The piston 9 is slidably mounted inside the oil pipe 7, and an active cavity is opened inside the piston 9, and the compression spring 8 is placed inside the active cavity;

[0026] In the embodiment of the utility model, a notch can be opened at one end of the pipeline where the piston 9 is placed in the oil seal body 1, and a sealing plug can be used to perform threaded sealing installation at the notch position; when assembling the one-way component, after opening the notch, a compression spring 8 is placed in the movable cavity opened in the piston 9, and then the piston 9 is completely placed in the pipeline, and the sealing plug is used to spirally rotate to seal the inner end of the pipeline where the piston 9 is placed;

[0027] When the lubricating oil is supplied through the oil inlet 6, the lubricating oil pipeline is aligned with the oil inlet 6, and the lubricating oil enters the oil pipe 7 through the oil inlet 6. After the lubricating oil enters the oil pipe 7, hydraulic pressure is generated, which squeezes the piston 9 to slide, and then causes the compression spring 8 placed inside the piston 9 to squeeze and deform, generating elastic variables, opening the oil pipe 7, and finally allowing the lubricating oil to pass through the oil pipe 7 and finally be discharged along the oil outlet 5 into the installed mechanical parts.

[0028] When the hydraulic oil is stopped, the piston 9 blocks the inside of the oil pipe 7 during the process of compressing the spring 8 to return to the initial state, thereby ensuring that part of the injected lubricating oil is temporarily stored in the oil pipe 7 and is not prone to leakage;

[0029] See also Figure 1 and Figure 2 In one embodiment of the utility model, the surface of the oil seal body 1 is symmetrically provided with alignment grooves 2, the center of the oil seal body 1 is provided with an axial hole 4, and the surface of the oil seal body 1 is provided with fitting grooves 3 at the peripheral position of the axial hole 4;

[0030] In the embodiment of the utility model, when the oil seal body 1 is assembled with the mechanical parts, the shaft hole 4 opened at the center of the oil seal body 1 is used to align the shaft passing through the mechanical parts, and then the fitting groove 3 formed on the outside of the shaft hole 4 is inserted into the position of the annular protrusion formed in the outer area of ​​the bottom end of the shaft, and finally, the positioning groove 2 opened on the surface of the oil seal body 1 is fitted with the protrusions distributed at intervals and staggered on the surface of the mechanical parts, so that the entire oil seal body 1 is quickly inserted into the installed mechanical parts;

[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An oil seal assembly, comprising: The oil seal body (1) is in the shape of a circular ring; and is characterized in that: An oil pipe (7) is provided inside the oil seal body (1), and the oil pipe (7) is in a bent shape. A one-way component is installed inside the oil pipe (7), which can ensure that lubricating oil is injected into the position of the mechanical parts mounted with the oil seal body (1) through the oil pipe (7), and can also ensure that the injected lubricating oil is temporarily stored inside the oil pipe (7) when the mechanical parts are in motion later, and is not prone to leakage. At the same time, an oil inlet (6) is provided on the front side of the oil seal body (1), and an oil outlet (5) is provided on the back side of the oil seal body (1); the oil inlet (6) and the oil outlet (5) are respectively located at the two ends of the oil pipe (7).

2. The oil seal assembly according to claim 1, characterized in that: The one-way component comprises a piston (9) and a compression spring (8). The piston (9) is slidably mounted inside the oil pipe (7), and an active cavity is provided inside the piston (9), and the compression spring (8) is placed inside the active cavity.

3. The oil seal assembly according to claim 1, characterized in that: The surface of the oil seal body (1) is provided with symmetrically distributed alignment grooves (2), a shaft hole (4) is provided at the center of the oil seal body (1), and a fitting groove (3) is formed on the surface of the oil seal body (1) at the peripheral position of the shaft hole (4).

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