Surface-mounted temperature sensor

Abstract

The utility model relates to the technical field of temperature sensors, and provides a surface-mounted temperature sensor, which comprises a sensor body, the sensor body comprises a shell, a mounting cavity, a thermistor body, a resistor pin, a through groove and a wire harness, and the bottom end of the shell is provided with a sealing structure. According to the sealing structure, under the protection effect of the sealing ring, water vapor can be prevented from entering the mounting cavity through the through groove, meanwhile, the inner wall of the sealing ring abuts against the outer wall of the wire harness, the empty groove deforms under the extrusion effect of the wire harness, and when deformation rebounds, extrusion force is exerted on the sealing ring; according to the wire harness sealing device, the extrusion force between the sealing ring and the wire harness can be increased, the sealing performance is improved, the connecting block and the sealing ring can be conveniently detached and replaced from the lower end of the shell under the connecting action of the clamping block and the clamping groove, and the device has the functions of conveniently sealing the bottom of the shell and conveniently detaching and replacing; and the safety and the service life of the surface-mounted temperature sensor in use are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to temperature sensor technical field, especially relate to a patch type temperature sensor. BACKGROUND

[0002] With the rapid development of science and technology, the precision, speed and stability requirements of temperature measurement in various fields are higher and higher, the traditional temperature sensor has limitations in some application scenarios, such as large volume, slow response speed, insufficient measurement precision, etc. Patch type temperature sensor is very suitable for industrial automation field because of its small size, high precision and fast response speed, therefore, a patch type temperature sensor needs to be designed;

[0003] Therefore, the patent with publication number CN218765648U discloses a patch type temperature sensor, relating to the technical field of temperature sensors. The traditional thermistor body is generally in the shape of a glass cylinder and does not contact well with the measured part, which cannot meet the requirements of insulation installation. The present application discloses a patch type temperature sensor, which is characterized by using a ceramic shell external structure designed in a flat surface mount type to increase the heat conduction area and heat dissipation efficiency of the thermistor body. The internal structure is divided into two sections. The ceramic shell front cavity is perforated and connected to the thermistor pin with a wire harness for insulation. The rear cavity is packaged and fixed with a thermistor glass body. Then, it is packaged and fixed by insulation glue. The insulation structure, heat conduction structure, and packaging structure are integrated to simplify a patch type temperature sensor. The present application is simple and quick to assemble, suitable for various narrow spaces, cancels the traditional metal shell, and simplifies the complex production process such as encapsulation insulation technology, improves production efficiency, reduces medium media precision temperature measurement, and achieves the purpose of cost reduction.

[0004] Although the patch type temperature sensor in the above description is simple and quick to assemble and suitable for various narrow spaces, it is inconvenient to protect the bottom of the sensor after installation, and water can easily enter from the gap of the installation wire harness. Therefore, a patch type temperature sensor needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a patch type temperature sensor, which solves the problem of the existing patch type temperature sensor that is inconvenient to protect the bottom of the sensor after installation and is prone to water entering from the gap of the installation wire harness.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a patch type temperature sensor, comprising a sensor body;

[0007] The sensor body comprises a shell, a mounting cavity, a thermistor body, resistance pins, a through slot and a wire harness, the top of the shell is provided with the mounting cavity, the inner wall of the shell inside the mounting cavity is fixed with the thermistor body, the inside of the shell at the bottom of the mounting cavity is provided with the through slot, the two sides of the bottom of the thermistor body are fixed with the resistance pins, and the low ends of the resistance pins are fixed with the wire harness inside the through slot;

[0008] The bottom of the shell is provided with a sealing structure, the sealing structure comprises connecting blocks, heightening blocks, clamping blocks, clamping grooves, sealing rings and air slots, the clamping grooves are evenly arranged on the two sides of the bottom of the shell, the clamping grooves are provided with the clamping blocks inside, the clamping blocks are fixed with the heightening blocks at the low ends, the heightening blocks are fixed with the connecting blocks at the low ends, the sealing rings are clamped and connected on the two sides inside the connecting blocks, and the air slots are arranged in the sealing rings.

[0009] One side of the shell is fixed with a connecting structure, and the side, away from the connecting structure, of the shell is fixed with a reinforcing structure.

[0010] Further, the resistance pins are symmetrically distributed on the two sides of the thermistor body, and the bottom of the wire harness extends to the outside of the shell.

[0011] Further, the clamping blocks and the shell are connected through the clamping grooves, the sealing rings are symmetrically distributed on the two sides of the connecting blocks, and the inner wall of the sealing ring and the outer wall of the wire harness are in contact with each other.

[0012] Further, the connecting structure comprises a connecting pad, an adhesive layer and a release film, the connecting pad is fixed on one side of the shell, one side of the connecting pad is fixed with the adhesive layer, and one side of the adhesive layer is fixed with the release film.

[0013] Further, the adhesive layer is a toughened epoxy resin adhesive layer.

[0014] Further, the reinforcing structure comprises vertical rods, reinforcing rods and horizontal rods, the horizontal rods are evenly fixed on one side of the shell, the vertical rods are fixed at the two ends of the horizontal rods, and the reinforcing rods are evenly fixed on one side of the vertical rods and the horizontal rods.

[0015] Further, the main view section of the reinforcing rod is inclined, and the vertical rods are symmetrically distributed on the two sides of the shell.

[0016] The patch type temperature sensor has the advantages that:

[0017] The sealing structure can avoid water vapor from entering the installation cavity through the through groove under the protection of the sealing ring, and the inner wall of the sealing ring and the outer wall of the wire harness abut against each other, the hollow groove is deformed under the extrusion of the wire harness, and the extrusion force on the sealing ring is increased when the hollow groove rebounds, the sealing performance between the sealing ring and the wire harness is improved, the connecting block and the sealing ring can be conveniently disassembled and replaced from the low end of the shell under the connection of the clamping block and the clamping groove, the device has the functions of conveniently sealing the bottom of the shell and conveniently disassembling and replacing, and the safety and service life of the patch type temperature sensor during use are improved.

[0018] The connecting structure can mutually bond and connect the sensor body and the object to be detected by the adhesive layer, and the adhesive layer can be protected from dust in the air under the action of the release film, so that the adhesion of the adhesive layer is not affected, the device has the functions of conveniently bonding and connecting the sensor body and protecting the adhesive layer, and the convenience of the patch type temperature sensor during use is improved.

[0019] The reinforcing structure can increase the stability of the shell during use under the reinforcing action of the vertical rod, the reinforcing rod and the horizontal rod, so that the shell is prevented from being folded and broken when being collided from outside, and the shell is prevented from being deformed due to the collision, the device has the function of increasing the use strength of the shell, and the stability of the patch type temperature sensor during use is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is an overall three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a front view cross-sectional structure schematic view of the utility model;

[0022] Figure 3 It is a Figure 2 It is an enlarged structure schematic view of A in the middle;

[0023] Figure 4 It is a side view cross-sectional structure schematic view of the utility model;

[0024] Figure 5 It is a top view cross-sectional structure schematic view of the utility model;

[0025] Figure 6 It is a front view cross-sectional three-dimensional structure schematic view of the utility model.

[0026] The figure mark explanation: 1, sensor body; 11, shell; 12, mounting cavity; 13, thermistor body; 14, resistance pin; 15, through slot; 16, wire harness; 2, sealing structure; 21, connecting block; 22, heightening block; 23, clamping block; 24, clamping groove; 25, sealing ring; 26, empty groove; 3, connecting structure; 31, connecting pad; 32, adhesive layer; 33, release film; 4, reinforcing structure; 41, vertical rod; 42, reinforcing rod; 43, horizontal rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0028] Please refer to Figures 1-6 The utility model provides a kind of patch temperature sensor, including sensor body 1.

[0029] Refer to Figures 1-6 Sensor body 1 includes shell 11, mounting cavity 12, thermistor body 13, resistance pin 14, through slot 15 and wire harness 16, the top of shell 11 is equipped with mounting cavity 12, the inner wall of shell 11 inside mounting cavity 12 is fixed with thermistor body 13, the inside of shell 11 at mounting cavity 12 bottom end is equipped with through slot 15, the both sides of thermistor body 13 bottom end are fixed with resistance pin 14, the low end of resistance pin 14 is extended to the inside of through slot 15 and is fixed with wire harness 16, resistance pin 14 is symmetrically distributed on the both sides of thermistor body 13, the bottom end of wire harness 16 is extended to the outside of shell 11, the bottom end of shell 11 is provided with sealing structure 2, sealing structure 2 includes connecting block 21, heightening block 22, clamping block 23, clamping groove 24, sealing ring 25 and empty groove 26, clamping groove 24 is evenly equipped on the both sides of the bottom of shell 11, clamping groove 24 is provided with clamping block 23 inside, the low end of clamping block 23 is fixed with heightening block 22, the low end of heightening block 22 is fixed with connecting block 21, connecting block 21 inside the both sides are clamped and connected with sealing ring 25, the inside of sealing ring 25 is equipped with empty groove 26, clamping block 23 and shell 11 are connected by clamping groove 24 and constitute interference clamping, sealing ring 25 is symmetrically distributed on the both sides of connecting block 21, the inner wall of sealing ring 25 and the outer wall of wire harness 16 are mutually resisted.

[0030] The connecting block 21 is sleeved outside the wire harness 16 through the sealing ring 25, and the connecting block 21 and the sealing ring 25 are moved upward by force during sleeving until the clamping block 23 enters the inside of the clamping groove 24, the connecting block 21 can be connected with the shell 11 through the clamping block 23, and the inner wall of the sealing ring 25 and the outer side of the wire harness 16 are extruded with each other when the sealing ring 25 is sleeved outside the wire harness 16, the air gap 26 is deformed, the tightness of the connection between the sealing ring 25 and the wire harness 16 can be improved, and the sealing performance of the sealing ring 25 is improved.

[0031] With reference to Figure 1 and Figures 4-6 , the connecting structure 3 is fixed on one side of the shell 11, the connecting structure 3 comprises a connecting pad 31, an adhesive layer 32 and a release film 33, the connecting pad 31 is fixed on one side of the shell 11, one side of the connecting pad 31 is fixed with the adhesive layer 32, and one side of the adhesive layer 32 is fixed with the release film 33, and the adhesive layer 32 is a toughened epoxy resin adhesive layer.

[0032] The adhesive layer 32 has good adhesion, the connecting pad 31 and the shell 11 and the object to be measured can be adhesively connected through the adhesive layer 32, and the adhesive layer 32 can be protected by the release film 33 during storage, so that the influence of dust in the air on the adhesive layer 32 is avoided.

[0033] With reference to Figure 1 , Figure 4 and Figure 5 , the reinforcing structure 4 is fixed on the side, away from the connecting structure 3, of the shell 11, the reinforcing structure 4 comprises vertical rods 41, reinforcing rods 42 and horizontal rods 43, the horizontal rods 43 are uniformly fixed on one side of the shell 11, both ends of the horizontal rods 43 are fixed with the vertical rods 41, and the vertical rods 41 and the horizontal rods 43 are uniformly fixed with the reinforcing rods 42 on one side, the main view section of the reinforcing rods 42 is inclined, and the vertical rods 41 are symmetrically distributed on both sides of the shell 11.

[0034] The vertical rods 41 can reinforce the vertical direction of the shell 11, so that the shell 11 is prevented from being broken vertically, the horizontal rods 43 can reinforce the horizontal direction of the shell 11, so that the shell 11 is prevented from being broken horizontally, and the horizontal rods 43 can fix the vertical rods 41 and the reinforcing rods 42 together, so that the stability of the vertical rods 41 and the reinforcing rods 42 during use is improved.

[0035] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A patch temperature sensor comprising a sensor body (1); Characterized in that: The sensor body (1) comprises a shell (11), a mounting cavity (12), a thermistor body (13), a resistance pin (14), a through slot (15) and a wire harness (16), the top of the shell (11) is provided with a mounting cavity (12), the inner wall of the shell (11) inside the mounting cavity (12) is fixed with a thermistor body (13), the inside of the mounting cavity (12) bottom of the shell (11) is provided with a through slot (15), the bottom of the thermistor body (13) is fixed with a resistance pin (14) on both sides, the low end of the resistance pin (14) extends to the inside of the through slot (15) and is fixed with a wire harness (16). The bottom of the shell (11) is provided with a sealing structure (2), the sealing structure (2) comprises a connecting block (21), a raised block (22), a clamping block (23), a clamping groove (24), a sealing ring (25) and a hollow groove (26), the clamping grooves (24) are evenly arranged on both sides of the bottom of the shell (11), the clamping grooves (24) are provided with clamping blocks (23) inside, the clamping blocks (23) are fixed with raised blocks (22) on the low end, the raised blocks (22) are fixed with connecting blocks (21) on the low end, the connecting blocks (21) are clamped and connected with sealing rings (25) on both sides inside, the sealing rings (25) are provided with hollow grooves (26) inside. One side of the shell (11) is fixed with a connecting structure (3), and the other side of the shell (11) away from the connecting structure (3) is fixed with a reinforcing structure (4).

2. The patch temperature sensor of claim 1, wherein: The resistance pins (14) are symmetrically distributed on both sides of the thermistor body (13), and the bottom of the wire harness (16) extends to the outside of the shell (11).

3. The patch temperature sensor of claim 1, wherein: The clamping blocks (23) and the shell (11) are connected by interference clamping through the clamping grooves (24), the sealing rings (25) are symmetrically distributed on both sides of the connecting block (21), and the inner wall of the sealing ring (25) and the outer wall of the wire harness (16) are in contact with each other.

4. The patch temperature sensor of claim 1, wherein: The connecting structure (3) comprises a connecting pad (31), an adhesive layer (32) and a release film (33), the connecting pad (31) is fixed on one side of the shell (11), one side of the connecting pad (31) is fixed with an adhesive layer (32), and one side of the adhesive layer (32) is fixed with a release film (33).

5. A patch temperature sensor according to claim 4, characterised in that: The adhesive layer (32) is a toughened epoxy resin adhesive layer.

6. The patch temperature sensor of claim 1, wherein: The reinforcing structure (4) comprises a vertical rod (41), a reinforcing rod (42) and a horizontal rod (43), the horizontal rods (43) are evenly fixed on one side of the shell (11), the vertical rods (41) are fixed on both ends of the horizontal rods (43), and the reinforcing rods (42) are evenly fixed on one side of the vertical rods (41) and the horizontal rods (43).

7. A patch temperature sensor according to claim 6, wherein: The main view of the reinforcing rod (42) is inclined, and the vertical rods (41) are symmetrically distributed on both sides of the shell (11).

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