Anti-interference vibration sensor based on complex environment

Abstract

The utility model relates to an anti-interference vibration sensor based on a complex environment, which comprises a vibration sensor body, a lead, a lower shell, an upper shell and a U-shaped threading pipe, the lower shell and the upper shell are made of electromagnetic shielding materials, the upper shell is hermetically mounted above the lower shell to form an electromagnetic shielding cover, the vibration sensor body is mounted in the electromagnetic shielding cover, and the U-shaped threading pipe is connected with the lead. The U-shaped threading pipe comprises a horizontal part and vertical parts located on the two sides of the horizontal part, and the horizontal part is arranged on the side wall of the upper shell in a penetrating mode. According to the utility model, the wire on the vibration sensor body passes through the U-shaped threading pipe and is led to the outside, the epoxy resin is injected into the U-shaped threading pipe, and the sealing filling body is formed after cooling and solidification, so that the gap between the outer wall of the wire and the inner wall of the U-shaped threading pipe can be sealed, and the adhesion area between the sealing filling body and the inner wall of the U-shaped threading pipe and the outer wall of the wire is large; and the sealing filling body is combined to move along the U-shaped threading pipe in a U-shaped track and is not easy to fall off, so that a good sealing effect is ensured, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration sensors, in particular to a vibration sensor based on anti-interference in complex environments. Background Art

[0002] A vibration sensor is a device used to detect and measure the vibration of an object or structure. By sensing changes in vibration, it converts mechanical vibrations into electrical signals, enabling monitoring and analysis of vibration characteristics. These sensors are widely used in machinery, buildings, and vehicles to prevent failures, ensure safety, and optimize performance.

[0003] To protect the vibration sensor from moisture and liquid intrusion, prevent damage and corrosion, and ensure its reliability and long-term stability in humid or harsh environments, a waterproof cover is usually installed on the outside of the vibration sensor. Since the vibration sensor is connected to a wire, a lead-in port is usually set on the waterproof cover. By passing the wire through the lead-in port, the wire can be led out of the waterproof cover for easy wiring. There is a gap between the wire and the inner wall of the lead-in port. To prevent liquid from seeping through this gap, the gap is usually filled with waterproof glue to achieve a seal. However, due to the lack of adhesion between the waterproof glue and the outer wall of the wire and the inner wall of the lead-in port, the waterproof glue easily falls off during long-term use, resulting in a limited waterproof service life of the waterproof cover. Utility Model Content

[0004] The purpose of the utility model is to provide a vibration sensor based on complex environment anti-interference, which effectively solves the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present utility model provides the following technical solutions.

[0006] The invention discloses a vibration sensor for preventing interference in complex environments, comprising a vibration sensor body, a wire, a lower shell, an upper shell and a U-shaped wire threading tube. The lower shell and the upper shell are made of electromagnetic shielding material. The upper shell is sealed and installed above the lower shell to form an electromagnetic shielding cover. The vibration sensor body is installed in the electromagnetic shielding cover. The U-shaped wire threading tube comprises a horizontal part and vertical parts located on both sides of the horizontal part. The horizontal part is arranged through the side wall of the upper shell. The outer wall of the horizontal part and the side wall of the upper shell are fixedly and sealed. Two wires are connected to the terminal of the vibration sensor body and pass through the U-shaped wire threading tube to be led out to the outside of the electromagnetic shielding cover. The side of the vertical part located outside the electromagnetic shielding cover is provided with an injection hole that passes through the U-shaped wire threading tube. Epoxy resin is injected into the U-shaped wire threading tube through the injection hole. After cooling, a sealed filling body is formed between the outer wall of the wire and the inner wall of the U-shaped wire threading tube.

[0007] The U-shaped threading tube is convenient to install and can be installed in a variety of environments, such as underground parking lot, underground parking lot, underground parking lot, underground waterway ...

[0008] In addition, electromagnetic shielding and waterproofing share the same housing, killing two birds with one stone and reducing material cost investment.

[0009] Furthermore, the height of the upper port of the vertical portion located inside the upper shell is higher than the height of the injection hole.

[0010] Furthermore, an internal threaded opening is provided on the top of the lower shell, and an external thread matching the thread of the internal threaded opening is provided on the bottom end of the upper shell. The bottom end of the upper shell is screwed onto the top of the lower shell with matching threads. A rubber ring is fixed on the bottom end surface of the upper shell. When the upper shell is installed on the top of the lower shell, the rubber ring fits tightly against the inner bottom wall of the internal threaded opening.

[0011] Furthermore, a base is fixed on the bottom wall of the lower shell, and a first card hole is provided on the base for the bottom end of the vibration sensor body to match and snap into. A top seat is provided on the top wall of the upper shell, and a second card hole is provided below the top seat for the top end of the vibration sensor body to match and snap into.

[0012] Furthermore, a vertically extending sleeve is fixed on the inner top wall of the upper shell, and a guide rod with a bottom end extending to the bottom of the sleeve is telescopically slidably installed in the sleeve. The top of the top seat is fixed on the bottom end of the guide rod, and a spring is vertically provided in the sleeve. The top end of the spring is fixed to the inner top wall of the sleeve, and the bottom end is fixed to the top end of the guide rod.

[0013] Furthermore, a through-hole is provided on the side wall of the top seat.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0015] 1. The utility model leads the wires on the vibration sensor body through a U-shaped wire threading tube to the outside, and injects epoxy resin into the U-shaped wire threading tube. After cooling and solidification, a sealing filling body is formed, which can seal the gap between the outer wall of the wire and the inner wall of the U-shaped wire threading tube. The adhesion area between the sealing filling body and the inner wall of the U-shaped wire threading tube and the outer wall of the wire is large. Combined with the sealing filling body forming a U-shaped trajectory along the U-shaped wire threading tube, it is not easy to fall off, thereby ensuring a good sealing effect and a long service life.

[0016] 2. The utility model seals the upper shell above the lower shell to form an electromagnetic shielding cover with electromagnetic shielding capability, and installs the vibration sensor body in the electromagnetic shielding cover. The electromagnetic shielding cover can provide electromagnetic shielding protection for the vibration sensor body, avoiding interference to the vibration sensor body caused by a strong magnetic environment, and has strong anti-electromagnetic interference capability. Combined with the waterproof effect, this vibration sensor is suitable for complex environments such as strong magnetic, outdoor, underwater and humid environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the structure at center A;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point B in the middle;

[0021] Figure 5 It is a schematic cross-sectional view of the local structure of the utility model.

[0022] In the figure: 01, electromagnetic shielding cover; 02, vibration sensor body; 03, wire; 1, lower shell; 101, internal threaded port; 11, base; 111, first clamping hole; 2, upper shell; 201, rubber ring; 21, top seat; 211, second clamping hole; 212, clearance port; 22, sleeve; 23, guide rod; 24, spring; 3, U-shaped wire threading tube; 31, horizontal part; 32, vertical part; 321, injection hole; 33, sealing filling body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms, "connection", and "installation" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. In addition, "communication" can be a direct connection or an indirect connection through an intermediate medium. Here, "fixed" means that the two are connected to each other and the relative position relationship after connection remains unchanged. The directional terms mentioned in the embodiments of the present invention, such as "inside", "outside", "top", "bottom", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present invention, 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 embodiments of the present invention.

[0025] In the embodiments of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0026] See also Figure 1-Figure 5 The utility model provides a vibration sensor based on complex environment anti-interference, including a vibration sensor body 02, a wire 03, a lower shell 1, an upper shell 2 and a U-shaped threading tube 3. The lower shell 1 and the upper shell 2 are made of electromagnetic shielding material. The upper shell 2 is sealed and installed above the lower shell 1 to form an electromagnetic shielding cover 01. The vibration sensor body 02 is installed in the electromagnetic shielding cover 01. The U-shaped threading tube 3 includes a horizontal part 31 and vertical parts 32 on both sides of the horizontal part 31. The horizontal part 31 passes through the upper shell 2. On the side wall, the outer wall of the horizontal part 31 is fixedly sealed to the side wall of the upper shell 2. The two wires 03 are connected to the terminal of the vibration sensor body 02 and are led out to the outside of the electromagnetic shielding cover 01 through the U-shaped wire tube 3. The side of the vertical part 32 located outside the electromagnetic shielding cover 01 is provided with an injection hole 321 that passes through the U-shaped wire tube 3. Epoxy resin is injected into the U-shaped wire tube 3 through the injection hole 321. After cooling, a sealed filling body 33 is formed between the outer wall of the wire 03 and the inner wall of the U-shaped wire tube 3.

[0027] The upper shell 2 is sealed and installed above the lower shell 1 to form an electromagnetic shielding cover 01 with electromagnetic shielding capability. The vibration sensor body 02 is installed in the electromagnetic shielding cover 01. The electromagnetic shielding cover 01 can provide electromagnetic shielding protection for the vibration sensor body 02, avoiding interference of the strong magnetic environment on the vibration sensor body 02, making this vibration sensor suitable for use in a strong magnetic environment.

[0028] In addition, the lower shell 1 and the upper shell 2 are sealed and installed, and the wire 03 on the vibration sensor body 02 is led out to the outside through the U-shaped wire tube 3, and epoxy resin is injected into the U-shaped wire tube 3. After cooling and solidification, a sealing filling body 33 is formed, which can seal the gap between the outer wall of the wire 03 and the inner wall of the U-shaped wire tube 3, and the adhesion area between the sealing filling body 33 and the inner wall of the U-shaped wire tube 3 and the outer wall of the wire 03 is large. Combined with the sealing filling body 33, it follows the U-shaped trajectory along the U-shaped wire tube 3 and is not easy to fall off, thereby ensuring good sealing effect and long service life. It is suitable for complex environments such as outdoor, underwater and humid environments.

[0029] Specifically, the height of the upper port of the vertical portion 32 located inside the upper shell 2 is higher than the height of the injection hole 321, and the injection hole 321 is set lower than the upper end of the vertical portion 32 on the other side. When epoxy resin is injected into the U-shaped wire threading tube 3 through the injection hole 321, when the epoxy resin liquid level is higher than the injection hole 321, it can be discharged through the injection hole 321, thereby avoiding excessive epoxy resin injection in the U-shaped wire threading tube 3 from flowing into the electromagnetic shielding cover 01 and causing contamination.

[0030] Specifically, an internal threaded opening 101 is provided on the top of the lower shell 1, and an external thread matching the thread of the internal threaded opening 101 is provided at the bottom end of the upper shell 2. The bottom end of the upper shell 2 is screwed onto the top of the lower shell 1 with matching thread, and the upper shell 2 is screwed onto the lower shell 1 using the thread, so that the lower shell 1 and the upper shell 2 have a detachable effect, which facilitates the later inspection and maintenance of the vibration sensor body 02. A rubber ring 201 is fixed on the bottom end surface of the upper shell 2. When the upper shell 2 is installed above the lower shell 1, the rubber ring 201 fits tightly against the inner bottom wall of the internal threaded opening 101. After the lower shell 1 and the upper shell 2 are installed, the rubber ring 201 is used to ensure a good sealing effect between the lower shell 1 and the upper shell 2.

[0031] Specifically, a base 11 is fixed on the inner bottom wall of the lower shell 1, and a first card hole 111 is provided on the base 11 for the bottom end of the vibration sensor body 02 to match and snap into. A top seat 21 is provided on the inner top wall of the upper shell 2, and a second card hole 211 is provided below the top seat 21 for the top end of the vibration sensor body 02 to match and snap into. The bottom end of the vibration sensor body 02 is snapped into the first card hole 111, and the top end is snapped into the second card hole 211. At the same time, the base 11 and the top seat 21 are made of rubber material and have buffering ability, and then the vibration sensor body 02 is positioned and arranged in the electromagnetic shielding cover 01, so that the vibration sensor body 02 is not in direct contact with the inner walls of the lower shell 1 and the upper shell 2. Combined with the buffering effect provided by the base 11 and the top seat 21, the impact can be effectively buffered when the electromagnetic shielding cover 01 is collided, avoiding the impact from being transmitted to the vibration sensor body 02 to cause excessive vibration and damage to internal components, thereby improving the protection effect of the vibration sensor body 02.

[0032] Specifically, a vertically extending sleeve 22 is fixed on the inner top wall of the upper shell 2, and a guide rod 23 with its bottom end extending to the bottom of the sleeve 22 is telescopically slidably installed in the sleeve 22. The top of the top seat 21 is fixed on the bottom end of the guide rod 23, and a spring 24 is vertically provided in the sleeve 22. The top end of the spring 24 is fixed to the inner top wall of the sleeve 22, and the bottom end is fixed to the top end of the guide rod 23. The elastic force of the spring 24 can push the top seat 21 to be pressed tightly against the top of the vibration sensor body 02, thereby avoiding the vibration sensor body 02 from shaking in the electromagnetic shielding cover 01 and ensuring the firmness of the installation of the vibration sensor body 02.

[0033] Specifically, a through-hole 212 is provided on the side wall of the top seat 21 , and the wire 03 is passed through the through-hole 212 , thereby facilitating the wire 03 to be led out from the second clamping hole 211 to the outside.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A vibration sensor based on complex environment anti-interference, characterized by: It comprises a vibration sensor body (02), a wire (03), a lower shell (1), an upper shell (2) and a U-shaped wire threading tube (3); The lower shell (1) and the upper shell (2) are made of electromagnetic shielding material; the upper shell (2) is sealed and installed above the lower shell (1) to form an electromagnetic shielding cover (01); and the vibration sensor body (02) is installed in the electromagnetic shielding cover (01); The U-shaped threading tube (3) comprises a horizontal portion (31) and vertical portions (32) located on both sides of the horizontal portion (31); the horizontal portion (31) is arranged to penetrate the side wall of the upper shell (2); and the outer wall of the horizontal portion (31) is fixedly and sealedly connected to the side wall of the upper shell (2); The two wires (03) are connected to the connection terminals of the vibration sensor body (02), and pass through the U-shaped wire threading tube (3) and are led out to the outside of the electromagnetic shielding cover (01); A side portion of the vertical portion (32) located outside the electromagnetic shielding cover (01) is provided with an injection hole (321) that penetrates the U-shaped threading tube (3); Epoxy resin is injected into the U-shaped wire threading tube (3) through the injection hole (321), and after cooling, a sealing filling body (33) is formed between the outer wall of the wire (03) and the inner wall of the U-shaped wire threading tube (3).

2. The vibration sensor for complex environment anti-interference according to claim 1, characterized in that: The height of the upper port of the vertical portion (32) located inside the upper shell (2) is higher than the height of the injection hole (321).

3. The vibration sensor for complex environment anti-interference according to claim 1, characterized in that: The top of the lower shell (1) is provided with an internal thread opening (101), and the bottom end of the upper shell (2) is provided with an external thread matching the thread of the internal thread opening (101); The bottom end of the upper shell (2) is screwed onto the lower shell (1) in a matching threaded manner; A rubber ring (201) is fixed on the bottom end surface of the upper shell (2); when the upper shell (2) is installed above the lower shell (1), the rubber ring (201) fits tightly against the inner bottom wall of the internal threaded opening (101).

4. The vibration sensor for complex environment interference resistance according to claim 1, characterized in that: A base (11) is fixed on the inner bottom wall of the lower shell (1), and a first clamping hole (111) is provided on the base (11) for the bottom end of the vibration sensor body (02) to be matched and clamped into; A top seat (21) is provided on the inner top wall of the upper shell (2), and a second clamping hole (211) is provided below the top seat (21) for the top end of the vibration sensor body (02) to be matched and clamped in.

5. The vibration sensor based on complex environment anti-interference according to claim 4, characterized in that: A vertically extending sleeve (22) is fixed on the inner top wall of the upper shell (2), a guide rod (23) with its bottom end extending below the sleeve (22) is telescopically slidably installed in the sleeve (22), and the top of the top seat (21) is fixed on the bottom end of the guide rod (23); A spring (24) is vertically provided in the sleeve (22), the top end of the spring (24) is fixed to the inner top wall of the sleeve (22), and the bottom end is fixed to the top end of the guide rod (23).

6. The vibration sensor for complex environment anti-interference according to claim 4, characterized in that: The side wall of the top seat (21) is also provided with a through-hole (212).

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