A concealed compression spring type temperature sensor

Abstract

The utility model discloses a hidden compression spring formula's temperature sensor belongs to temperature sensor technical field. In view of the problem that spring is easy to rust in prior art, the utility model through the sleeve completely covers compression spring, avoids its exposure to the external environment, effectively prevents compression spring rust and corrosion, prolongs the service life of sensor. The telescopic narrow pipe structure of sleeve makes the probe be able to adjust flexibly according to the measuring depth, ensures the close contact with the measuring surface, reduces the measurement error. The fixed plate and the plug block realize the quick connection and firm fixation of the probe and the sleeve through the insertion slot, simplify the installation process. Hollow insertion rod design lightens the weight of sensor, provides wiring space simultaneously. The bolt at the bottom of the connector is convenient for connecting with other equipment, improves the installation convenience. The compression spring movement is limited at the bunch mouth, maintains the stable pressure contact. The overall structure is compact, improves the adaptability and reliability of the sensor in complex environment.

Description

Technical Field

[0001] This utility model belongs to the field of temperature sensor technology, specifically relating to a hidden spring-loaded temperature sensor. Background Technology

[0002] In the field of temperature sensor technology, existing temperature sensors with compression springs typically expose the springs to the external environment. This causes the springs to come into direct contact with air, moisture, or corrosive media, making them prone to rust and corrosion, which affects the elastic performance and service life of the springs. Rusting of the springs alters their elastic coefficient, leading to unstable pressure applied to the probe, thus affecting the accuracy and reliability of temperature measurements. Furthermore, exposed springs are susceptible to physical impacts or contamination during installation and use, further increasing the risk of damage and shortening the overall lifespan of the sensor. In addition, harsh industrial environments such as wind power, electric power, or HVAC industries, high temperature, high humidity, or chemical corrosion conditions accelerate the deterioration of the springs, leading to frequent sensor replacements, increased maintenance costs, and inconvenience. Therefore, effectively protecting the springs from environmental corrosion is a key issue in improving the durability and stability of temperature sensors.

[0003] This invention attempts to solve or at least alleviate such problems by providing a hidden spring-loaded temperature sensor. Utility Model Content

[0004] In view of one or more of the above-mentioned defects or improvement needs of the prior art, the present invention provides a hidden spring-type temperature sensor, which has the advantage of protecting the spring.

[0005] To achieve the above objectives, this utility model provides a hidden spring-loaded temperature sensor, comprising: a probe, a connector at the top of the probe, a plug at the bottom of the connector, a probe central hole penetrating the top surface of the probe, and the plug capable of being inserted into the probe central hole;

[0006] A compression spring is fitted on the outside of the insertion rod. The compression spring has the same outer diameter as the top surface of the probe. A sleeve is fitted on the outside of the compression spring.

[0007] As a preferred embodiment of this utility model, the sleeve includes a retractable narrow tube at the bottom and a wide tube sleeved on the upper part of the retractable narrow tube, wherein the inner diameter of the retractable narrow tube is larger than the outer diameter of the compression spring.

[0008] As a further improvement of this utility model, the sleeve also includes a constriction opening at the top of the wide tube, wherein the inner diameter of the constriction opening is smaller than the outer diameter of the compression spring.

[0009] As a further improvement of this utility model, the telescopic narrow tube has a narrow tube bottom surface, a fixing plate is provided on the narrow tube bottom surface, an insertion hole is opened in the fixing plate, and an insertion block is inserted through the insertion hole; a slot is opened on the side of the probe, and the insertion block can be inserted into the slot.

[0010] As a further improvement of this utility model, both ends of the insertion block are provided with limiting blocks, and the slot is the same size as the limiting blocks.

[0011] As a further improvement of this utility model, the insertion rod is hollow.

[0012] As a further improvement of this utility model, the bottom surface of the connector is also provided with bolts.

[0013] In summary, the beneficial effects of the above-described technical solutions conceived by this utility model compared with the prior art include:

[0014] This utility model discloses a concealed spring-type temperature sensor. The spring is completely encased within a sleeve, preventing direct exposure to the external environment, thus preventing rust and corrosion and extending the sensor's lifespan. The sleeve's telescopic narrow tube allows for flexible probe adjustment according to the measurement depth, ensuring close contact between the probe and the measurement surface and reducing measurement errors. The fixing plate and insert mate with the probe's slot, enabling quick installation and secure fixation, simplifying the assembly process. The hollow design of the insert reduces the sensor's weight and provides internal space for wiring, enhancing practicality. The bolt at the bottom of the connector facilitates connection to other devices, improving installation convenience. The constriction at the spout restricts spring movement, keeping the spring in the correct position and maintaining stable pressure. The overall structure is compact, improving the sensor's adaptability and reliability in complex environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the hidden spring-loaded temperature sensor structure of this utility model;

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the structure at point A in the middle;

[0017] Figure 3 This is a schematic diagram of the structure of this utility model after the sleeve is removed;

[0018] Figure 4 This is a schematic diagram of the insertion rod and probe structure of this utility model;

[0019] Figure 5 This utility model Figure 4 Schematic diagram of the structure at point B;

[0020] Figure 6 This is a schematic diagram of the fixing plate and insert block structure of this utility model.

[0021] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically:

[0022] Connector 1; Sleeve 2; Probe 3; Compression Spring 4; Insert Rod 5;

[0023] 21 wide tube; 22 telescopic narrow tube; 23 constriction end; 221 bottom surface of narrow tube; 222 fixing plate;

[0024] Insertion block 223; Limiting block 224; Insertion hole 225; Slot 31; Probe top surface 32;

[0025] Probe hole 33. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0028] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0029] In the embodiments, by Figure 1-6 A hidden spring-loaded temperature sensor is provided, comprising: a probe 3, a connector 1 at the top of the probe 3, a plug 5 installed at the bottom of the connector 1, a probe hole 33 penetrating the top surface 32 of the probe 3, and the plug 5 being able to be inserted into the probe hole 33.

[0030] A compression spring 4 is fitted on the outside of the insertion rod 5. The compression spring 4 has the same outer diameter as the top surface 32 of the probe. A sleeve 2 is fitted on the outside of the compression spring 4.

[0031] This design effectively protects the spring 4 from external environmental influences by concealing it inside the sleeve 2, improving the durability and stability of the sensor. At the same time, the compact structure facilitates installation and maintenance, ensuring accurate temperature measurement.

[0032] In a preferred embodiment of this invention, the sleeve 2 includes a retractable narrow tube 22 at the bottom and a wide tube 21 fitted onto the upper part of the retractable narrow tube 22. The inner diameter of the retractable narrow tube 22 is larger than the outer diameter of the compression spring 4. This structure allows the retractable narrow tube 22 to adapt to different installation depths, providing flexibility. The wide tube 21 and the narrow tube 22 work together to achieve retraction, and the probe 3 retracts and extends synchronously, improving the sensor's adaptability in complex environments.

[0033] In a preferred embodiment of this invention, the sleeve 2 further includes a constriction 23 located at the top of the wide tube 21, wherein the inner diameter of the constriction 23 is smaller than the outer diameter of the compression spring 4. The constriction 23 restricts the movement of the spring 4, preventing it from dislodging from the sleeve 2 and ensuring that the spring 4 is always in the correct position, thereby maintaining stable pressure contact and improving the reliability of temperature measurement.

[0034] In a preferred embodiment of this invention, the retractable narrow tube 22 has a narrow tube bottom surface 221, on which a fixing plate 222 is provided. An insertion hole 225 is formed in the fixing plate 222, and an insertion block 223 passes through the insertion hole 225. A slot 31 is formed on the side of the probe 3, and the insertion block 223 can be inserted into the slot 31. This design, through the cooperation of the insertion block 223 and the slot 31, enables quick connection and fixation between the probe 3 and the sleeve 2, simplifying the installation process and allowing the retractable narrow tube 22 to extend when the probe 3 extends.

[0035] In a preferred embodiment of this invention, the insert 223 is provided with limiting blocks 224 at both ends, and the slot 31 is the same size as the limiting blocks 224. The limiting blocks 224 prevent the insert 223 from becoming loose or falling out of the slot 31.

[0036] In a preferred embodiment of this invention, the insertion rod 5 is hollow. The hollow insertion rod 5 reduces the overall weight of the sensor, lowers material costs, and provides internal space for wiring or accommodating other components, enhancing functionality and practicality.

[0037] As a preferred embodiment of this utility model, the bottom surface of the connector 1 is also provided with bolts. The bolt design facilitates the fixing of the connector 1 to other equipment or brackets, enabling quick installation and disassembly, and improving the versatility of the sensor and the convenience of field application.

[0038] Working principle: The hidden spring-loaded temperature sensor of this utility model is inserted into the probe hole 33 of the probe 3 through the insertion rod 5 installed at the bottom of the connector 1. The insertion rod 5 is fitted with a spring 4, and the spring 4 is fitted with a sleeve 2. The sleeve 2 includes a telescopic narrow tube 22 and a wide tube 21. The inner diameter of the telescopic narrow tube 22 is larger than the outer diameter of the spring 4 to accommodate the spring. The inner diameter of the constriction 23 at the top of the wide tube 21 is smaller than the outer diameter of the spring 4 to prevent the spring from falling out. The bottom surface 221 of the telescopic narrow tube 22 is provided with a fixing plate 222. The insertion hole 225 in the fixing plate 222 is through which a plug 223 passes. The plug 223 is inserted into the slot 31 on the side of the probe 3 and fixed by a limiting block 224, thereby realizing the quick connection and telescopic adjustment of the probe 3 and the sleeve 2. The spring 4 provides continuous pressure inside the sleeve 2 to ensure that the probe 3 is in close contact with the measuring surface, thereby improving the accuracy of temperature measurement.

[0039] In summary, this invention completely encloses the compression spring within a sleeve, preventing it from being directly exposed to the external environment, thus preventing rust and corrosion and extending the sensor's lifespan. The sleeve's telescopic narrow tube allows the probe to be flexibly adjusted according to the measurement depth, ensuring close contact between the probe and the measurement surface and reducing measurement errors. The fixing plate and insert mate with the probe's slot, enabling quick installation and secure fixation, simplifying the assembly process. The hollow design of the insert reduces the sensor's weight and provides internal space for wiring, enhancing practicality. The bolt at the bottom of the connector facilitates connection with other devices, improving installation convenience. The constriction at the end restricts the compression spring's movement, keeping it in the correct position and maintaining stable pressure. The overall structure is compact, improving the sensor's adaptability and reliability in complex environments.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor of the concealed compression spring type, characterized in that, include: The probe (3) has a connector (1) at the top of the probe (3), and a plug (5) is installed at the bottom of the connector (1). The probe (3) has a probe hole (33) that penetrates the top surface (32) of the probe, and the plug (5) can be inserted into the probe hole (33). The insertion rod (5) is fitted with a compression spring (4) on its outer side. The compression spring (4) has the same outer diameter as the top surface (32) of the probe. The compression spring (4) is fitted with a sleeve (2) on its outer side.

2. The temperature sensor according to claim 1, characterized in that, The sleeve (2) includes a retractable narrow tube (22) at the bottom and a wide tube (21) sleeved on the upper part of the retractable narrow tube (22). The inner diameter of the retractable narrow tube (22) is larger than the outer diameter of the compression spring (4).

3. The temperature sensor according to claim 2, characterized in that, The sleeve (2) also includes a constriction (23) located at the top of the wide tube (21), the inner diameter of which is smaller than the outer diameter of the compression spring (4).

4. The temperature sensor according to claim 2, characterized in that, The retractable narrow tube (22) has a narrow tube bottom surface (221), a fixing plate (222) is provided on the narrow tube bottom surface (221), an insertion hole (225) is provided in the fixing plate (222), and an insertion block (223) is inserted through the insertion hole (225); the probe (3) has a slot (31) on its side, and the insertion block (223) can be inserted into the slot (31).

5. The temperature sensor according to claim 4, characterized in that, The insert (223) has a limiting block (224) at both ends, and the slot (31) is the same size as the limiting block (224).

6. The temperature sensor according to claim 1, characterized in that, The insertion rod (5) is hollow.

7. The temperature sensor according to claim 1, characterized in that, The bottom surface of the connector (1) is also provided with bolts.

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