Proximity switch structure capable of being used in deepwater environment for long time

Abstract

The proximity switch structure capable of being used in the deep water environment for a long time comprises a structural member, a proximity switch body, a blocking piece, a spring and a watertight connector, the structural member is of a cylindrical structure, an installation cavity is formed in the structural member, the tail of the structural member is communicated with the installation cavity to form an opening, an internal thread is arranged at the opening of the installation cavity, and the installation cavity is provided with an external thread. The proximity switch body is correspondingly arranged in the mounting cavity, the tail part of the proximity switch body is sequentially sleeved with a separation blade and a spring, the watertight joint is provided with an external thread and is in threaded connection with the internal thread of the mounting cavity, and the front end of the watertight joint presses the front end of the proximity switch body to the front part of the mounting cavity through the spring. According to the utility model, high pressure can be borne; absolute sealing is achieved structurally; the device can be used in a large-temperature-difference environment for a long time; salt water corrosion and the like are resisted; and the anti-impact and anti-vibration performance is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of proximity switch structure that can be used in deep water environment for a long time. BACKGROUND

[0002] The proximity switch on market can be divided into dry reed glass tube type, plastic shell type, ordinary metal electroplating shell type, stainless steel shell type and the like structure from shell structure.

[0003] Investigation and experiment show that: the proximity switch on market is currently used in normal pressure environment, and cannot be basically applied to deep water environment with high pressure. The proximity switch with metal shell has certain pressure resistance, but adopts two-end potting structure. The proximity switch with potting structure causes sealing failure after being used for a period of time due to the difference in temperature shrinkage ratio between potting glue material and metal material, thereby causing damage to the function of equipment, and causing great risk to the reliability of equipment.

[0004] As described above, the proximity switch on market cannot meet the requirements of corrosion resistance, high pressure resistance and temperature difference resistance. INVENTION CONTENTS

[0005] The utility model mainly solves the technical problem to provide a kind of proximity switch structure that can be used in deep water environment for a long time, can withstand strong pressure intensity;From structure to achieve absolute sealing;Can be used in the environment of long-term in large temperature difference environment;Resist corrosion such as salt water;Have strong impact resistance, shock resistance.

[0006] To solve the above technical problems, one technical scheme of the utility model is provided: provide a kind of proximity switch structure that can be used in deep water environment for a long time, including structural member, proximity switch body, baffle, spring and water-tight joint, the structural member is arranged in columnar structure, the inside of the structural member is provided with installation cavity and tail communication and is arranged as opening, the installation cavity is provided with internal thread at opening, the proximity switch body is correspondingly arranged in installation cavity, the tail of the proximity switch body is sequentially provided with baffle and spring, the water-tight joint is provided with external thread and is threadedly connected with the internal thread of installation cavity, the front end of the water-tight joint is pressed to the front of installation cavity by spring with the front end of proximity switch body.

[0007] In a preferred embodiment of the utility model, the structural member is made of beryllium bronze.

[0008] In a preferred embodiment of the utility model, the outer surface of the structural member is provided with fine thread.

[0009] In a preferred embodiment of the utility model, the diameter of the installation cavity is matched with the outer diameter of the proximity switch body.

[0010] In a preferred embodiment of the present application, the front end of the installation cavity is provided with slow-drying silica gel.

[0011] In a preferred embodiment of the present application, the front end of the proximity switch body is fixedly formed into an integrated structure with the structural member through slow-drying silica gel.

[0012] In a preferred embodiment of the present application, the tail portion of the water-tight joint and the structural member is further provided with an annular sealing ring.

[0013] The present application has the advantages that the proximity switch structure can be used in deep water environment for a long time, can withstand strong pressure, is absolutely sealed in structure, can be used in environment with large temperature difference for a long time, is resistant to salt water corrosion, and has strong impact and vibration resistance. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0015] Figure 1 is a sectional view of a preferred embodiment of the proximity switch structure which can be used in deep water environment for a long time. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0017] Please refer to Figure 1 The embodiments of the present application include:

[0018] The proximity switch structure which can be used in deep water environment for a long time comprises a structural member 1, a proximity switch body 2, a baffle 3, a spring 4 and a water-tight joint 5.

[0019] The structural member 1 is in a cylindrical structure, and an installation cavity 6 is arranged in the interior of the structural member 1 and the tail portion is communicated to be an opening, facilitating assembly of the whole structure from the opening.

[0020] The structural member 1 is made of beryllium bronze, has good corrosion resistance and small signal shielding. The pressure strength of the structural member 1 is matched with the use requirements.

[0021] The outer surface of the structural member 1 is provided with fine thread, which can be screwed, facilitating subsequent installation and use.

[0022] The installation cavity 6 is provided with internal thread at the opening, facilitating threaded connection.

[0023] The proximity switch body 2 is correspondingly arranged in the installation cavity 6, and the diameter of the installation cavity 6 matches the outer diameter of the proximity switch body 2, facilitating installation of the proximity switch body 2.

[0024] The tail of the proximity switch body 2 is sequentially sleeved with the baffle 3 and the spring 4, the water-tight joint 5 is provided with external thread and is screwed with the internal thread of the installation cavity 6, and the front end of the water-tight joint 5 presses the front end of the proximity switch body 2 to the front part of the installation cavity 6 through the spring 4, facilitating stability during installation of the proximity switch body 2.

[0025] The front end of the installation cavity 6 is provided with slow-drying silica gel 7, and the front end of the proximity switch body 2 is fixed with the structural member 1 through the slow-drying silica gel 7 to form an integrated structure, ensuring consistency during use of the structural member 1 and the proximity switch body 2.

[0026] The water-tight joint 5 is further provided with an annular sealing ring 8 at the joint with the tail of the structural member 1, ensuring sealing of the water-tight joint 5 and the structural member 1.

[0027] During assembly, the structural member 1 is first vertically fixed with the opening upward, a small amount of slow-drying silica gel 7 with good fluidity is added to the bottom of the installation cavity 6, and then the proximity switch body 2, the baffle 3, the spring 4 and the water-tight joint 5 are sequentially arranged in the installation cavity 6, the water-tight joint 5 is screwed, and the structural member 1 and the proximity switch body 2 are fixed after the slow-drying silica gel 7 is completely solidified.

[0028] The above structure is formed through secondary assembly and can be used in high-pressure and large-temperature-difference environments for a long time, and can be applied to submersible vehicles and other equipment with harsh environmental requirements such as corrosion resistance, pressure resistance and large temperature difference.

[0029] As described above, the proximity switch structure capable of being used in deep water environment for a long time can withstand strong pressure, is absolutely sealed in structure, can be used in large-temperature-difference environment for a long time, is resistant to salt water corrosion, and has strong impact and vibration resistance.

[0030] The above description is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion or direct or indirect application in other related technical fields by using the utility model specification content is also included in the patent protection range of the utility model.

Claims

1. A proximity switch structure capable of long-term use in a deep water environment, characterized by, The proximity switch body is arranged in the mounting cavity, the tail of the proximity switch body is sequentially sleeved with the baffle and the spring, the watertight joint is provided with external threads and is threadedly connected with the internal threads of the mounting cavity, and the front end of the watertight joint presses the front end of the proximity switch body to the front part of the mounting cavity through the spring.

2. The proximity switch structure for long-term use in a deep water environment according to claim 1, wherein The structure member is made of beryllium bronze.

3. The proximity switch structure for long-term use in a deep water environment according to claim 1, wherein The outer surface of the structure member is provided with fine tooth threads.

4. The proximity switch structure for long-term use in a deep water environment according to claim 1, wherein The diameter of the mounting cavity is matched with the outer diameter of the proximity switch body.

5. The proximity switch structure for long-term use in a deep water environment according to claim 1, wherein The front end of the mounting cavity is provided with slow-drying silica gel.

6. The proximity switch structure for long-term use in a deep water environment according to claim 5, wherein The front end of the proximity switch body is fixed with the structure member through the slow-drying silica gel to form an integrated structure.

7. The proximity switch structure for long-term use in a deep water environment according to claim 1, wherein The watertight joint is further provided with an annular sealing ring at the joint with the tail of the structure member.

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