A temperature sensing wire and its preparation method

Abstract

This invention belongs to the technical field of temperature measuring instruments and equipment, specifically relating to a temperature sensing wire, including a conductor, a connector, and a temperature sensor. The connector and the temperature sensor are respectively disposed at both ends of the conductor. The conductor includes a core and an insulating layer covering the surface of the core. A metal layer is disposed outside the insulating layer, and a welding tab is connected to the metal layer. The connector has a first welding portion and a second welding portion. The core is welded to the first welding portion, and the welding tab is welded to the second welding portion. Compared with the prior art, this invention improves the connection strength between the conductor and the connector by welding the metal layer and the connector with the welding tab, preventing breakage at the weld joint during long-term use. It also facilitates processing and improves production efficiency. Furthermore, this invention also discloses a method for preparing the temperature sensing wire.

Description

Technical Field

[0001] This invention belongs to the field of temperature measuring instrument and equipment technology, specifically relating to a temperature sensing wire and its preparation method. Background Technology

[0002] A barbecue grill is a type of grilling equipment used to make dishes such as lamb skewers and grilled meat. Barbecue grills typically have a temperature detection system that uses temperature sensors to collect the temperature inside the grill and transmit the temperature data signal to the relevant equipment.

[0003] Currently, commercially available temperature sensing cables generally consist of a plug, a stencil braided wire, and temperature-sensitive components. This is achieved by welding the high-temperature resistant inner core wire and the surface stencil layer of the stencil braided wire to the plug. However, this structure has certain drawbacks: the stencil layer is composed of multiple fine steel wires, and directly welding it to the plug can easily lead to insufficient weld strength, making it prone to breakage during long-term use. Furthermore, the welding process requires first twisting the stencil layer to form the welding end before welding it to the plug's pads, a process that is manually operated and inefficient.

[0004] In view of this, it is necessary to make reasonable improvements to the aforementioned existing technologies in order to meet actual production needs. Summary of the Invention

[0005] One of the objectives of this invention is to provide a temperature sensing wire that addresses the shortcomings of existing technologies. This temperature sensing wire can effectively solve the problem of insufficient welding strength between the plug and the wire, while also greatly improving production efficiency.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A temperature sensing wire includes a conductor, a connector, and a temperature sensor. The connector and the temperature sensor are respectively disposed at both ends of the conductor. The conductor includes a wire core and an insulating layer covering the surface of the wire core. A metal layer is disposed outside the insulating layer, and a welding piece is connected to the metal layer. The connector is provided with a first welding part and a second welding part. The wire core is welded to the first welding part, and the welding piece is welded to the second welding part.

[0008] As an improvement to the temperature sensing line described in one of the objectives of this invention, the welding piece includes a connecting portion and a welding pin connected to the connecting portion. The connecting portion is pressed onto the surface of the metal layer, and the welding pin is welded to the second welding portion. By pressing the connecting portion onto the surface of the metal layer, the welding piece is tightly and firmly fixed to the conductor. Simultaneously, the welding pin is welded to the connector, thus greatly enhancing the welding strength and improving the service life of this invention.

[0009] As an improvement to the temperature sensing line described in one of the objectives of this invention, matching snap-fit ​​interfaces are provided on both sides of the connecting portion, and the snap-fit ​​interfaces are connected after being pressed together. The snap-fit ​​interfaces ensure that the two sides of the connecting portion engage and lock together after pressing, thereby helping to strengthen the connection between the welding piece and the conductor.

[0010] As an improvement to the temperature sensing line described in one of the objectives of this invention, the connecting part and the welding pin are integrally formed. This integrally formed structure effectively improves the structural strength of the connecting part and the welding pin, and also facilitates processing and improves production efficiency. Among these improvements, stamping integral forming is preferred.

[0011] As an improvement to the temperature sensing wire described in one of the objectives of this invention, the wire core includes at least one conductor, and each conductor is interconnected by twisting. The conductor is a high-temperature resistant inner core wire, and the twisting forms a single-core structure, facilitating soldering.

[0012] As an improvement to the temperature sensing line described in one of the objectives of this invention, the metal layer comprises multiple metal wires connected in a layered structure by braiding. The metal wires are steel wires, and the braiding process forms a steel mesh braided layer.

[0013] As an improvement to the temperature sensing line described in one of the objectives of this invention, the connector is a TRS plug, a DC plug, or a USB plug. The connector is primarily used to connect to a display device, transmitting the object temperature information collected by the temperature sensor to the display device; therefore, a TRS plug, a DC plug, or a USB plug can be used.

[0014] As an improvement to the temperature sensing line described in one of the objectives of this invention, the temperature sensing element is a thermistor, thermocouple, or resistance temperature sensor. Among these, a glass-sealed thermistor is preferred due to its advantages such as small size, high testing accuracy, fast response speed, stability and reliability, strong anti-aging ability, and good consistency.

[0015] One of the beneficial effects of this invention is that, compared with the prior art, this invention greatly enhances the connection strength between the conductor and the connector by setting a welding piece on the metal layer and welding the welding piece to the connector, thereby preventing the phenomenon of weld breakage during long-term use, improving the service life of the invention, and also facilitating processing and improving production efficiency.

[0016] The second objective of this invention is to provide a method for preparing a temperature sensing wire, comprising the following steps:

[0017] Step 1: Place one end of the conductor on the connection part of the soldering plate, and apply pressure to make the connection part tightly press against the metal layer on the conductor.

[0018] Step 2: After the welding piece and the metal layer are pressed together, weld the wire core to the first welding part of the connector and weld the welding pin of the welding piece to the second welding part of the connector.

[0019] Step 3: Install the temperature sensor on the other end of the conductor.

[0020] As an improvement to the method for preparing the temperature sensing wire described in the second objective of this invention, the welding method in step 2 is soldering, laser welding, friction welding, or ultrasonic welding. Soldering is primarily used, as it allows for better bonding of the wire core and welding pins to the connector, while also reducing production costs.

[0021] The second beneficial effect of this invention is that, compared with the prior art, this invention avoids the traditional manual operation of twisting the metal layer together by first pressing the welding piece and the metal layer of the wire body together, and then welding it to the connector, which greatly improves the production efficiency and the consistency of the product is also greatly improved. Attached Figure Description

[0022] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 for Figure 1 Sectional view at point B;

[0026] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0028] Among them, 1-conductor body; 2-plug body; 3-temperature detection body; 4-welding piece; 11-wire core; 12-insulation layer; 13-metal layer; 21-first welding part; 22-second welding part; 41-connecting part; 42-welding pin; 111-conductor; 411-card interface. Detailed Implementation

[0029] The specification and claims use certain terms to refer to specific components. Those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings, but this is not intended to limit the scope of the invention.

[0033] Example 1

[0034] like Figures 1-3 As shown, a temperature sensing wire includes a conductor body 1, a connector 2, and a temperature sensing element 3. The connector 2 and the temperature sensing element 3 are respectively disposed at both ends of the conductor body 1. The conductor body 1 includes a wire core 11 and an insulation layer 12 covering the surface of the wire core 11. A metal layer 13 is disposed outside the insulation layer 12, and a welding piece 4 is connected to the metal layer 13. The connector 2 is provided with a first welding part 21 and a second welding part 22. The wire core 11 is welded to the first welding part 21, and the welding piece 4 is welded to the second welding part 22. In the present invention, by providing the welding piece 4 on the metal layer 13 and welding it to the connector 2, the connection strength between the conductor body 1 and the connector 2 is greatly enhanced, preventing the phenomenon of weld breakage during long-term use, improving the service life of the present invention, and also facilitating processing and improving production efficiency.

[0035] In this embodiment, the connector 2 can be a 3.5mm TRS plug, with the first soldering part 21 located on the positive terminal of the TRS plug and the second soldering part 22 located on the negative terminal of the TRS plug. The temperature sensor 3 is a glass-sealed thermistor, which features small size, high testing accuracy, fast response speed, stability and reliability, strong anti-aging ability, and good consistency. In actual operation, the temperature sensor 3 collects the working temperature of the object and transmits the collected temperature information signal to the temperature display device via the lead wire 1 and connector 2, allowing the operator to perform corresponding temperature adjustment operations.

[0036] Preferably, the welding piece 4 includes a connecting portion 41 and a welding needle 42 connected to the connecting portion 41. The connecting portion 41 is pressed onto the surface of the metal layer 13, and the welding needle 42 is welded to the second welding portion 22. The connecting portion 41 and the welding needle 42 are integrally formed. By pressing the connecting portion 41 onto the surface of the metal layer 13, the welding piece 4 is tightly and firmly fixed to the conductor 1. At the same time, the welding needle 42 is welded to the connector 2. Since the connecting portion 41 and the welding needle 42 are integrally formed, the connection strength can be greatly enhanced. In this embodiment, the connecting portion 41 and the welding needle 42 adopt a stamped integral forming structure. Of course, other integral forming methods can be adopted according to actual production needs.

[0037] Preferably, matching locking interfaces 411 are provided on both sides of the connecting part 41, and the locking interfaces 411 are connected after being pressed together. The locking interfaces 411 can make the two sides of the connecting part 41 fit together and lock tightly after pressing, thereby further strengthening the connection strength between the welding piece 4 and the conductor 1.

[0038] Preferably, the wire core 11 includes at least one conductor 111, and each conductor 111 is interconnected by twisting. The conductor 111 is a high-temperature resistant inner core wire, and the twisting forms a single-core structure, facilitating soldering.

[0039] Preferably, the metal layer 13 comprises multiple metal wires connected in a braided manner to form a layered structure. The metal wires are steel wires, and the braiding process forms a steel mesh woven layer.

[0040] Example 2

[0041] like Figures 4-5As shown, unlike in Embodiment 1, the first soldering part 21 is disposed on the negative terminal of the TRS plug, and the second soldering part 22 is disposed on the positive terminal of the TRS. The wire core 11 is soldered to the first soldering part 21, and the soldering piece 4 is soldered to the second soldering part 22. Other structures are the same as in Embodiment 1, and will not be described again here. In this embodiment, by soldering the wire core 11 to the negative terminal and the soldering piece 4 to the positive terminal, the function of transmitting temperature signals can also be achieved, improving the selectivity of soldering; however, it should be noted that when connecting the temperature sensing body 3, the wire core 11 needs to be connected to the negative terminal of the temperature sensing body 3, while the metal layer 13 is connected to the positive terminal of the temperature sensing body 3.

[0042] Example 3

[0043] A method for preparing a temperature sensing wire includes the following steps:

[0044] Step 1: Place one end of the conductor 1 on the connecting part 41 of the welding piece 4, and apply pressure to make the connecting part 41 tightly press against the metal layer 13 on the conductor 1.

[0045] Step 2: After the welding piece 4 and the metal layer 13 are pressed together, weld the wire core 11 to the first welding part 21 of the plug body 2, and weld the welding pin 42 of the welding piece 4 to the second welding part 21 of the plug body 2.

[0046] Step 3: Install the temperature sensor 3 on the other end of the conductor 1.

[0047] In this embodiment, by first pressing the welding piece 4 to the metal layer 13 of the conductor 1 and then welding it to the connector 2, the traditional manual operation of twisting the metal layer 13 is avoided, which greatly improves the production efficiency. At the same time, the consistency of the product is also greatly improved.

[0048] Preferably, the welding method in step 2 is soldering, laser welding, friction welding, or ultrasonic welding. Among these, soldering is mainly used, which can better weld the wire core 11 and the welding pin 42 to the connector, and at the same time, it can also reduce production costs.

[0049] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A temperature sensing line, characterized in that: The device includes a conductor (1), a connector (2), and a temperature sensor (3). The connector (2) and the temperature sensor (3) are respectively disposed at both ends of the conductor (1). The conductor (1) includes a wire core (11) and an insulation layer (12) covering the surface of the wire core (11). A metal layer (13) is disposed outside the insulation layer (12), and a welding piece (4) is connected to the metal layer (13). The connector (2) is provided with a first welding part (21) and a second welding part (22). The wire core (11) is welded to the first welding part (21), and the welding piece (4) is welded to the second welding part (22). The welding piece (4) includes a connecting part (41) and a welding needle (42) connected to the connecting part (41). The connecting part (41) is pressed onto the surface of the metal layer (13), and the welding needle (42) is welded to the second welding part (22). The connecting part (41) has matching card interfaces (411) on both sides. The card interfaces (411) are connected after being pressed together. The connecting part (41) and the welding pin (42) are integrally formed. The metal layer (13) includes multiple metal wires, which are connected in a layered structure by braiding.

2. The temperature sensing line according to claim 1, characterized in that: The core (11) includes at least one conductor (111), and each conductor (111) is connected to each other by twisting.

3. The temperature sensing line according to claim 1, characterized in that: The connector (2) is a TRS plug, a DC plug, or a USB plug.

4. The temperature sensing line according to claim 1, characterized in that: The temperature detection element (3) is a thermistor, thermocouple, or resistance temperature sensor.

5. A method for preparing a temperature sensing wire, applied to the temperature sensing wire as described in any one of claims 1 to 4, characterized in that, Includes the following steps: Step 1: Place one end of the conductor (1) on the connecting part (41) of the welding piece (4), and apply pressure to make the connecting part (41) tightly press against the metal layer (13) on the conductor (1); Step 2: After the welding piece (4) and the metal layer (13) are pressed together, weld the wire core (11) to the first welding part (21) of the plug body (2), and weld the welding pin (42) of the welding piece (4) to the second welding part (22) of the plug body (2). Step 3: Install the temperature sensor (3) on the other end of the conductor (1).

6. The method for preparing the temperature sensing wire according to claim 5, characterized in that: The welding method in step 2 is tin soldering, laser welding, friction welding, or ultrasonic welding.

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