Vulcanized rubber shaft seal combination oil seal

Abstract

The utility model discloses a kind of vulcanized rubber shaft sealing combination oil seal, it is related to oil seal technical field, including metal lining, the outside of the metal lining is provided with rubber sleeve, the outer surface of the rubber sleeve is opened to limit card slot, the two sides of the rubber sleeve inner ring surface are provided with sealing outer lip, the utility model is through the setting of limit card slot, with the protruding clamping in installation cavity, by sealing outer lip, the rotation adjustment of rubber sleeve position can be facilitated, to facilitate clamping operation, in this way, when shaft rotates, make rubber sleeve not with shaft synchronous rotation, to avoid the abrasion of rubber sleeve outside, increase service life, by the setting of inner recess, the connecting area between rubber sleeve can be increased, to increase the connecting strength between rubber sleeve and metal lining, ensure that use stability, by the setting of hard circle, for the position of spring is limited, make spring difficult to move, to ensure the limiting effect of sealing outer lip, guarantee use sealing property.

Description

Technical Field

[0001] This utility model relates to the field of oil seal technology, and in particular to a vulcanized rubber shaft seal combination oil seal. Background Technology

[0002] Oil seal is a common term for general sealing components; simply put, it's a seal for lubricating oil. It's a mechanical component used to seal grease (oil is the most common liquid substance in transmission systems, and also refers to any liquid substance in general). It isolates the lubricated parts from the output parts in the transmission system, preventing lubricating oil leakage.

[0003] In existing technologies, oil seals are installed between the shaft and the workpiece. Currently used oil seals have a spring installed at the lip to ensure the tension of the connection between the lip and the shaft and prevent grease from flowing out. However, when the shaft rotates at high speed, the oil seal is prone to rotating with the shaft, which can cause wear on the outer surface of the oil seal, leading to wear on the skeleton and seal failure. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the technology where oil seals are installed between the shaft and the workpiece. Currently used oil seals have a spring installed at the lip to ensure the tension of the connection between the lip and the shaft and prevent grease from flowing out. However, when the shaft rotates at high speed, the oil seal is prone to rotate with the shaft, which leads to wear on the outer surface of the oil seal, resulting in wear of the skeleton and seal failure. Therefore, this invention proposes a vulcanized rubber shaft seal combination oil seal.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a vulcanized rubber shaft sealing combination oil seal, including a metal liner, a rubber sleeve provided on the outer side of the metal liner, a limiting groove formed on the outer surface of the rubber sleeve, sealing lips provided on both sides of the inner annular surface of the rubber sleeve, and an oil storage cavity formed between the two sealing lips and the rubber sleeve. Through the setting of the limiting groove, it engages with the protrusion in the mounting cavity. Through the sealing lips, the position of the rubber sleeve can be easily rotated and adjusted to facilitate the engagement operation. In this way, when the shaft rotates, the rubber sleeve does not rotate synchronously with the shaft, thereby avoiding wear on the outer side of the rubber sleeve and increasing its service life. The protrusion that engages with the limiting groove needs to be installed in the mounting cavity.

[0006] Preferably, a slot is provided on the inner side of the sealing outer lip, and a spring is installed inside the slot.

[0007] Preferably, a defined assembly groove is provided inside the sealing outer lip and outside the card slot.

[0008] Preferably, a rigid ring is installed inside the defined assembly groove. The rigid ring is used to restrict the position of the spring, making it difficult for the spring to move, thereby ensuring the restriction effect on the sealing outer lip and ensuring the sealing performance.

[0009] Preferably, the metal liner has recessed grooves on both sides. The recessed grooves increase the connection area between the metal liner and the rubber sleeve, thereby increasing the connection strength between the rubber sleeve and the metal liner and ensuring stability in use. The recessed grooves are processed by stamping, which makes the surface of the metal liner uneven and improves the connection strength with the rubber sleeve. The rubber sleeve is processed on the outside of the metal liner by vulcanization.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] In this invention, the limiting groove engages with the protrusion in the mounting cavity, and the sealing lip facilitates the rotational adjustment of the rubber sleeve position for easy engagement. This design prevents the rubber sleeve from rotating synchronously with the shaft, thus avoiding wear on the outer side of the rubber sleeve and increasing its service life. The recessed groove increases the connection area between the rubber sleeve and the metal liner, thereby increasing the connection strength and ensuring stability. The hard ring restricts the position of the spring, making it difficult for the spring to move, thus ensuring the sealing effect of the sealing lip and guaranteeing a tight seal. Attached Figure Description

[0012] Figure 1 A three-dimensional structural schematic diagram of a vulcanized rubber shaft seal combination oil seal is provided for this utility model;

[0013] Figure 2 An exploded view of a vulcanized rubber shaft seal combination oil seal is provided for this utility model;

[0014] Figure 3 A three-dimensional structural diagram of the metal liner in a vulcanized rubber shaft seal combination oil seal is provided for this utility model.

[0015] Figure 4 This utility model presents a schematic diagram of the internal structure of the rubber sleeve in a vulcanized rubber shaft seal combination oil seal.

[0016] Legend: 1. Rubber sleeve; 2. Limiting groove; 3. Sealing outer lip; 4. Oil reservoir; 5. Spring; 6. Hard ring; 7. Metal liner; 8. Recessed groove; 9. Slot; 10. Limiting assembly groove. Detailed Implementation

[0017] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0019] Example: Figure 1 - Figure 4 As shown, this utility model provides a vulcanized rubber shaft seal combination oil seal, including a metal liner 7, a rubber sleeve 1 on the outer side of the metal liner 7, a limiting groove 2 on the outer surface of the rubber sleeve 1, sealing lips 3 on both sides of the inner annular surface of the rubber sleeve 1, an oil storage cavity 4 between the two sealing lips 3 and the rubber sleeve 1, a groove 9 on the inner side of the sealing lips 3, a spring 5 installed inside the groove 9, a limiting assembly groove 10 on the inner side of the sealing lips 3 and located outside the groove 9, a hard ring 6 installed inside the limiting assembly groove 10, recessed grooves 8 on both sides of the metal liner 7, and protrusions that need to be installed in the mounting cavity and engaged with the limiting groove 2. The recessed grooves 8 are processed by stamping, which makes the surface of the metal liner 7 uneven and improves the connection strength with the rubber sleeve 1. The rubber sleeve 1 is processed on the outer side of the metal liner 7 by vulcanization.

[0020] The specific settings and functions of this embodiment are described in detail below. The limiting groove 2 engages with the protrusion in the mounting cavity. The sealing lip 3 facilitates the rotational adjustment of the rubber sleeve 1, making the engagement operation easier. In this way, the rubber sleeve 1 does not rotate synchronously with the shaft when the shaft rotates, thus avoiding wear on the outer side of the rubber sleeve 1 and increasing its service life. The recessed groove 8 increases the connection area between the rubber sleeve 1 and the metal liner 7, thereby increasing the connection strength between the rubber sleeve 1 and the metal liner 7 and ensuring stability in use. The hard ring 6 restricts the position of the spring 5, making it difficult for the spring 5 to move, thereby ensuring the restriction effect of the sealing lip 3 and ensuring the sealing performance.

[0021] The method of use and working principle of this device: During installation, first install the spring 5 into the slot 9, then adjust the sealing lip 3 to install the hard ring 6 into the limiting assembly slot 10, then align the limiting slot 2 with the protrusion in the mounting cavity, and install the shaft and rubber sleeve 1 into the mounting cavity to complete the installation.

[0022] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A vulcanized rubber shaft seal assembly oil seal, comprising a metal liner (7), characterized in that: A rubber sleeve (1) is provided on the outer side of the metal liner (7). A limiting groove (2) is provided on the outer surface of the rubber sleeve (1). A sealing lip (3) is provided on both sides of the inner ring surface of the rubber sleeve (1). An oil storage cavity (4) is provided between the two sealing lips (3) and the rubber sleeve (1).

2. The vulcanized rubber shaft seal combination oil seal according to claim 1, characterized in that: The inner side of the sealing outer lip (3) is provided with a slot (9), and a spring (5) is installed inside the slot (9).

3. The vulcanized rubber shaft seal combination oil seal according to claim 2, characterized in that: A limiting assembly groove (10) is provided inside the sealing outer lip (3) and outside the slot (9).

4. The vulcanized rubber shaft seal combination oil seal according to claim 3, characterized in that: A rigid ring (6) is installed inside the defined assembly groove (10).

5. The vulcanized rubber shaft seal combination oil seal according to claim 1, characterized in that: The metal liner (7) has recessed grooves (8) on both sides.

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