Waterproof seal capable of reducing pressure

Abstract

The utility model discloses a pressure reduction waterproof seal in the technical field of sealing oil seals, which comprises a support framework, an outer seal body and an inner seal body, the outer seal body is wrapped between the outer side wall and the right side wall of the support framework, the inner seal body is wrapped between the left side wall and the inner side wall of the support framework, and the inner seal body is connected with the support framework. An inner side chamfer is arranged on the periphery of the left side of the outer side wall of the outer sealing body, an outer side chamfer is arranged on the periphery of the right side of the outer side wall of the outer sealing body, a sealing lip is arranged on the periphery of the inner side wall of the inner sealing body, a mounting groove is formed in the periphery of the right side of the outer side wall of the inner sealing body, and a spring ring is clamped in an inner cavity of the mounting groove. The oil seal is reasonable in structural design, the oil seal can buffer the pressure after receiving the pressure from the outside, the pressure borne by the oil seal is reduced, the oil seal can be prevented from deforming after being pressed, the sealing performance of the oil seal is prevented from being influenced, and the motor is prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing oil seals, in particular to a pressure-reducing waterproof seal. Background Art

[0002] Oil seal is the customary name for general seals. Simply put, it is a seal for lubricating oil. It is a mechanical component used to seal grease (oil is the most common liquid substance in the transmission system, and also refers to general liquid substances). It isolates the parts that need lubrication in the transmission components from the output components to prevent the lubricating oil from leaking. The connection between the motor housing and the motor shaft needs an oil seal for sealing and waterproofing.

[0003] When existing motors are used underwater, the oil seal structure used is also different. The different pressures they withstand underwater will also affect the oil seal. The oil seal will deform under pressure, resulting in reduced sealing effect, causing water to enter the motor and cause damage to the motor. For this reason, we have proposed a pressure-reducing waterproof seal. Utility Model Content

[0004] The utility model aims to provide a pressure-reducing waterproof seal to solve the problem in the above background technology that the oil seal will deform after being subjected to pressure, resulting in a reduction in its own sealing effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure-reducing waterproof seal, comprising a supporting frame, an outer sealing body and an inner sealing body, the outer sealing body is wrapped around the outer side wall and the right side wall of the supporting frame, the inner sealing body is wrapped around the left side wall and the inner side wall of the supporting frame, the outer side wall of the outer sealing body has an inner chamfer around the left side, the outer side wall of the outer sealing body has an outer chamfer around the right side, the inner side wall of the inner sealing body is provided with a sealing lip around, the outer side wall of the inner sealing body has an installation groove around the right side, and the inner cavity of the installation groove is clamped with a spring ring.

[0006] As a further description of the above technical solution:

[0007] The support frame is in a concave shape and is made of carbon steel.

[0008] As a further description of the above technical solution:

[0009] The support frame, the outer sealing body and the inner sealing body are integrally formed by vulcanization.

[0010] As a further description of the above technical solution:

[0011] The outer sealing body and the inner sealing body are an integrally formed structure, and both the outer sealing body and the inner sealing body are made of nitrile rubber.

[0012] As a further description of the above technical solution:

[0013] A 45-degree chamfer is arranged around the right side of the sealing lip.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the pressure-reducing waterproof seal has an outer sealing body and an inner sealing body integrally vulcanized on a supporting frame, and the sealing lip inside the inner sealing body contacts and seals with the motor shaft surface, and is fixed by a spring ring on the inner sealing body, and by adopting a concave supporting frame made of carbon steel, the oil seal can buffer the pressure after receiving external pressure, thereby reducing the pressure on the oil seal, thereby preventing the oil seal from deforming after being pressurized, affecting its sealing performance, and avoiding damage to the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a pressure-reducing waterproof seal proposed by the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of a pressure-reducing waterproof seal proposed by the utility model;

[0017] Figure 3 A pressure-reducing waterproof seal proposed by the utility model Figure 2 Enlarged structural diagram at A in the middle.

[0018] In the figure: 100, supporting frame; 200, outer sealing body; 210, inner chamfer; 220, outer chamfer; 300, inner sealing body; 310, sealing lip; 320, mounting groove; 321, spring ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 it can be indirectly connected 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.

[0022] The utility model provides a pressure-reducing waterproof seal, which can prevent the oil seal from deforming after being compressed, affecting its sealing performance and avoiding damage to the motor. Figure 1-3 , comprising a support frame 100, an outer sealing body 200 and an inner sealing body 300;

[0023] Please refer again Figure 1-3 The support frame 100 is in a concave shape, and the support frame 100 is made of carbon steel. The support frame 100, the outer sealing body 200 and the inner sealing body 300 are integrally formed by vulcanization;

[0024] Please refer again Figure 1-3 The outer wall of the outer sealing body 200 is provided with an inner chamfer 210 on the left side, and the outer wall of the outer sealing body 200 is provided with an outer chamfer 220 on the right side. The outer chamfer 220 is used to cooperate with the inner chamfer 210 to install the oil seal. The outer sealing body 200 and the inner sealing body 300 are an integrally formed structure. The outer sealing body 200 and the inner sealing body 300 are both made of nitrile rubber. The outer sealing body 200 is wrapped between the outer wall of the supporting frame 100 and the right side wall.

[0025] Please refer again Figure 1-3A sealing lip 310 is provided around the inner wall of the inner sealing body 300, and a mounting groove 320 is opened around the right side of the outer wall of the inner sealing body 300. A spring ring 321 is clamped in the inner cavity of the mounting groove 320, and a forty-five-degree chamfer is provided around the right side of the sealing lip 310. The inner sealing body 300 is wrapped between the left side wall and the inner side wall of the support frame 100. The outer sealing body 200 and the inner sealing body 300 are integrally vulcanized on the support frame 100, and the sealing lip 310 on the inner side of the inner sealing body 300 is in contact with the motor shaft surface for sealing, and the inner sealing body 300 is fixed by the spring ring 321 on the inner sealing body 300. The concave support frame 100 made of carbon steel material allows the oil seal to buffer the pressure after receiving the pressure from the outside, thereby reducing the pressure on the oil seal.

[0026] In summary, this can prevent the oil seal from deforming after being pressurized, affecting its sealing performance and causing damage to the motor.

[0027] During specific use, when a person skilled in the art uses an oil seal to seal the motor housing and shaft, the oil seal sleeve is connected to the motor shaft, clamped into the mounting groove 320 through the spring ring 321, and the inner seal body 300 is clamped. The outer side of the outer seal body 200 is formed with a mounting portion through the inner chamfer 210 and the outer chamfer 220 provided on the outer side of the outer seal body 200, and the oil seal is installed on the motor housing. The sealing lip 310 on the inner side of the inner seal body 300 contacts and seals with the motor shaft surface. When the motor is subjected to external pressure during use, a concave support frame 100 made of carbon steel is used, so that the oil seal can buffer the pressure after receiving the external pressure, thereby reducing the pressure on the oil seal.

[0028] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0029] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pressure-reducing waterproof seal, characterized in that: The invention comprises a support frame (100), an outer sealing body (200) and an inner sealing body (300), wherein the outer sealing body (200) is wrapped around the outer side wall and the right side wall of the support frame (100), and the inner sealing body (300) is wrapped around the left side wall and the inner side wall of the support frame (100). The outer side wall of the outer sealing body (200) is provided with an inner chamfer (210) around the left side, and the outer side wall of the outer sealing body (200) is provided with an outer chamfer (220) around the right side, and the inner side wall of the inner sealing body (300) is provided with a sealing lip (310) around the inner side wall, and the outer side wall of the inner sealing body (300) is provided with an installation groove (320) around the right side, and the inner cavity of the installation groove (320) is clamped with a spring ring (321).

2. A pressure reducing waterproof seal according to claim 1, characterized in that: The support frame (100) is in a concave shape, and the support frame (100) is made of carbon steel.

3. A pressure reducing waterproof seal according to claim 1, characterized in that: The support frame (100), the outer sealing body (200) and the inner sealing body (300) are integrally formed by vulcanization.

4. A pressure reducing waterproof seal according to claim 1, characterized in that: The outer sealing body (200) and the inner sealing body (300) are an integrally formed structure, and both the outer sealing body (200) and the inner sealing body (300) are made of nitrile rubber.

5. A pressure reducing waterproof seal according to claim 1, characterized in that: The right side of the sealing lip (310) is provided with a 45-degree chamfer.

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