Double-end terminal structure for connecting temperature-sensing heating wire
By designing a double-head terminal structure of the connected temperature-sensitive heating wire, the temperature-sensitive heating wire can be used to achieve automatic power outage and automatic power outage, which solves the problems of high-temperature power outage and low-temperature power outage of existing electric heating wires, and improves the safety and applicability of the product.
Patent Information
- Application Number
- CN202421897327.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-23
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing electric hotline lacks a structure for high-temperature power outage and low-temperature automatic power outage, resulting in insufficient safety and applicability.
A double-head terminal structure connecting the temperature-sensitive heating wire is designed, and stamped and molded through a metal sheet, including a heating wire connector and a thermosensitive wire connector. The heating wire joint includes an insulating layer and wire core fixing, and the thermosensing wire joint includes a conductor fixing and connecting parts, combining the thermosensing wire to achieve automatic power off and automatic power-on functions.
It realizes automatic power outage when the temperature reaches high temperature and automatic power on after the temperature drops, ensuring that the product temperature is within a safe and applicable range, improving the safety and applicability of the product.
Smart Images
Figure CN222897333U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of wiring harness connection terminals, in particular to a double-head terminal structure for connecting temperature-sensitive heating wires. Background Art
[0002] Heating wires are also called heating wires, heating wires and electric heating wires. Their main purpose is heating. For example, heating wires are often used as heating elements in home appliances such as heaters, water heaters, and electric blankets. Since heating wires are made of high-temperature alloy materials, they can withstand high temperatures and high voltages, and can provide higher power and heating effects. Existing heating wires lack a structure that cuts off power at high temperatures and automatically heats up after cooling down, and lack a structure that is both safe and applicable.
[0003] Therefore, a double-ended terminal structure for connecting a temperature-sensitive heating wire is needed to solve the above technical problems. Utility Model Content
[0004] In order to overcome the above-mentioned problem that the power cannot be automatically turned off at high temperature, and cannot be automatically turned on after automatically turning off the power at low temperature, the utility model provides a double-head terminal structure for connecting a temperature-sensitive heating wire with double joints.
[0005] In order to solve the above technical problems, the present utility model provides the following technical solutions:
[0006] A double-ended terminal structure for connecting a temperature-sensitive heating wire, which is formed by cutting and stamping a metal sheet, and includes a heating wire connector and a temperature-sensitive wire connector;
[0007] The heating wire connector comprises an insulating layer first fixing part, a wire core first fixing part and a first plug-in part, wherein the wire core first fixing part is arranged between the insulating layer first fixing part and the first plug-in part, and the three are on the same straight line, and the insulating layer first fixing part and the wire core first fixing part form a groove with an arc-shaped bottom;
[0008] The first fixing member of the insulating layer comprises a first fixing member and a second fixing member, the first fixing member and the second fixing member are symmetrically arranged, and the first fixing member of the insulating layer is used to fix the insulating layer;
[0009] The first fixing member of the wire core includes a third fixing member and a fourth fixing member, the third fixing member and the fourth fixing member are both rectangular, and the third fixing member and the fourth fixing member are arranged symmetrically according to the central axis of the groove; the first fixing member of the wire core is used for the carbon fiber heating element;
[0010] The first plug-in connector is a circular tubular structure, and the center line of the first plug-in connector is on the same straight line as the center line of the slot;
[0011] The temperature sensing wire joint includes a wire fixing part, a connecting part and a second plug-in part. The wire fixing part includes a ninth fixing part and a tenth fixing part. The ninth fixing part and the tenth fixing part are symmetrically arranged. The connecting part is arranged between the wire fixing part and the second plug-in part.
[0012] As a further solution of the utility model: the heating wire connector also includes a heating wire heat sink, which is arranged between the first fixing member and the first plug-in member of the wire core, and includes a first heat sink and a second heat sink, the first heat sink is a groove structure with a central angle of less than or equal to 90 degrees in the cross section, and the second heat sink is a semicircular groove with a semicircular tube-shaped cross section; the heating wire heat sink is used for heat dissipation.
[0013] As a further solution of the utility model: a first notch (132a) is provided on the end of the second heat dissipation member close to the fourth fixing member.
[0014] As a further solution of the utility model: the extended end of the third fixing member and the extended end of the fourth fixing member are respectively provided with a pointed tip in the thickness direction.
[0015] As a further solution of the utility model: there is also a first limiting member between the heating wire heat sink and the first connector, the first limiting member is in the shape of a circular tube, the diameter of the circular tube is larger than the diameter of the circular tube of the first connector, and the center line of the first limiting member is on the same straight line as the center line of the first connector.
[0016] As a further solution of the utility model: a first chamfer is provided on one end of the first connector away from the heating wire heat sink.
[0017] As a further solution of the utility model: the first chamfer is a right angle or a rounded angle.
[0018] As a further solution of the utility model: a second insulating layer fixing piece is arranged on the temperature sensing wire joint, the second insulating layer fixing piece includes a seventh fixing piece and an eighth fixing piece, the seventh fixing piece and the eighth fixing piece are symmetrically arranged, and the second insulating layer fixing piece is used to fix the insulating layer; the end of the connecting piece away from the second plug-in piece is located between the wire fixing piece and the second insulating layer fixing piece.
[0019] As a further solution of the utility model: the material of the heating wire joint and the temperature sensing wire joint is phosphor copper sheet, brass sheet or tinned copper.
[0020] As a further solution of the utility model: a second limiter, a heat sink and a second wire core fixing member are also arranged on the temperature sensing wire joint between the connecting member and the second plug-in connector, and the second limiter, heat sink and second wire core fixing member are arranged in sequence on one side of the second plug-in connector close to the connecting member.
[0021] The utility model relates to a double-end terminal structure for connecting a temperature-sensitive heating wire. The beneficial effects are as follows: on the basis of conventional design, a temperature-sensitive wire is added, and a double-end structure for simultaneous plugging is set. When the temperature reaches a high temperature, the resistance value increases, and the circuit automatically cuts off the power to cool the product. On the contrary, when the product temperature drops, the resistance value decreases, and the circuit automatically powers on to heat the product. Therefore, the structure is simple, and the product temperature can be kept within a certain safe and adaptable numerical range. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the specific implementation methods or the description of the prior art. The drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific implementation methods, they are used to explain the present application, but do not constitute a limitation to the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. Elements or components with the same reference numerals in the drawings are represented as similar corresponding elements or components. Unless otherwise stated, the dimensions in the drawings do not constitute a proportional limitation.
[0023] Figure 1 This is the assembly diagram of the double-ended terminal structure for connecting the temperature-sensitive heating wire of the utility model;
[0024] Figure 2 This is a schematic diagram of the structure of the heating wire joint of the utility model;
[0025] Figure 3 This is the front view of the heating wire connector of the utility model;
[0026] Figure 4 This is a top view of the heating wire connector of the utility model;
[0027] Figure 5 This is a left view of the heating wire connector of the utility model;
[0028] Figure 6 This is the front view of the temperature sensing wire joint of the utility model;
[0029] Figure 7 This is a top view of the temperature sensing wire joint of the utility model;
[0030] Figure 8 This is the left view of the temperature sensing wire connector of the utility model;
[0031] Fig. 9 It is a schematic diagram of the wire structure of the utility model.
[0032] In the figure: 100-heating wire joint, 110-insulating layer first fixing piece, 111-first fixing piece, 112-second fixing piece, 120-core first fixing piece, 121-third fixing piece, 122-fourth fixing piece, 12a-tip, 130-heating wire heat sink, 131-first heat sink, 132-second heat sink, 132a-first notch, 140-first limiter, 150-first connector, 15a-first chamfer, 160-groove, 200-temperature sensing wire joint, 210-wire fixing piece, 211-ninth fixing piece , 212-the tenth fixing piece, 220-the second fixing piece of the insulating layer, 221-the seventh fixing piece, 222 the eighth fixing piece, 230-the connecting piece, 240-the second fixing piece of the wire core, 241-the fifth fixing piece, 242-the sixth fixing piece, 250-the heat sink, 251-the third heat sink, 252-the fourth heat sink, 25a-the second notch, 260-the second limiting piece, 270-the second connector, 27a-the second chamfer, 300-the wire, 310-the sheath, 320-the insulating layer, 330-the temperature sensing line, 340-the carbon fiber heating element. DETAILED DESCRIPTION
[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the following is a further detailed description of a double-ended terminal structure for connecting a temperature-sensitive heating wire of the utility model in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0034] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "center", "longitudinal", "lateral", "up", "down", "left", "right", "inside", "outside", "front end", "rear end", "head", "tail", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Fig. 9 As shown, a double-ended terminal structure for connecting a temperature-sensitive heating wire is formed by cutting and stamping a metal sheet, and includes a heating wire connector 100 and a temperature-sensitive wire connector 200;
[0037] The heating wire connector 100 includes an insulating layer first fixing member 110, a wire core first fixing member 120 and a first plug connector 150. The wire core first fixing member 120 is arranged between the insulating layer first fixing member 110 and the first plug connector 150. The three are on the same straight line. The insulating layer first fixing member 110 and the wire core first fixing member 120 form a groove 160 with an arc-shaped bottom.
[0038] The first insulating layer fixing member 110 includes a first fixing member 111 and a second fixing member 112, the first fixing member 111 and the second fixing member 112 are symmetrically arranged, and the first insulating layer fixing member 110 is used to fix the insulating layer 320;
[0039] The first wire core fixing member 120 includes a third fixing member 121 and a fourth fixing member 122, both of which are rectangular, and the third fixing member 121 and the fourth fixing member 122 are arranged symmetrically along the central axis of the groove 160; the first wire core fixing member 120 is used for the carbon fiber heating element 340;
[0040] The first connector 150 is a circular tubular structure, and the center line of the first connector 150 and the center line of the slot 160 are on the same straight line;
[0041] The temperature sensing wire joint 200 includes a wire fixing part 210, a connecting part 230 and a second plug connector 270. The wire fixing part 210 includes a ninth fixing part 211 and a tenth fixing part 212. The ninth fixing part 211 and the tenth fixing part 212 are symmetrically arranged. The connecting part 230 is arranged between the wire fixing part 210 and the second plug connector 270. The wire fixing part 210 is used to fix the wire 300.
[0042] The ninth fixing member 211 and the tenth fixing member 212 are both rectangular or triangular. When they are rectangular, the ninth fixing member 211 and the tenth fixing member 212 are arranged symmetrically along the center line of the slot 160. When they are both triangular, they are arranged symmetrically along the center line.
[0043] The conductor 300 includes a sheath 310 , a temperature-sensitive wire 330 , an insulating layer 320 , and a carbon fiber heating element 340 in sequence from the outer layer to the center, wherein there is only one temperature-sensitive wire 330 .
[0044] When in use, the first fixing member 111 is first used to tightly clamp the insulating layer 320, and then the second fixing member 112 is used to overlap the first fixing member 111, and finally the first fixing member 111 and the second fixing member 112 are pressed tightly. The order of using the first fixing member 111 and the second fixing member 112 can be reversed.
[0045] The third fixing member 121 and the fourth fixing member 122 are lower in height than the first fixing member 111 and the second fixing member 112. When in use, the extension ends of the third fixing member 121 and the fourth fixing member 122 are bent in opposite directions and inserted into the middle of the carbon fiber heating element 340, and the carbon fiber heating element 340 is divided into two bundles and tightly bound respectively, one of which includes the temperature sensing wire 330. After being tightly bound, the cross section of the first fixing member 120 of the wire core resembles a capital letter B. This structure wraps the carbon fiber heating element 340, and the carbon fiber heating element 340 is more compact and stable.
[0046] The structure of the second connector 270 is the same as that of the first connector 150 , and is provided with a second chamfer 27 a .
[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a further solution of the utility model: the heating wire connector 100 also includes a heating wire heat sink 130, which is arranged between the first fixing member 120 of the wire core and the first plug-in member 150, and includes a first heat sink 131 and a second heat sink 132, the first heat sink 131 is a groove structure with a central angle of less than or equal to 90 degrees in the cross section, and the second heat sink 132 is a semicircular groove with a semicircular tube-shaped cross section; the heating wire heat sink 130 is used for heat dissipation.
[0048] The heating wire heat sink 130 is in the shape of a C-shaped groove, and the groove diameter is larger than the groove diameter of the groove formed by the first wire core fixing member 120. It has both heat dissipation space and heat exhaust gap, which can well improve the heat dissipation efficiency and greatly reduce the failure rate.
[0049] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a further solution of the present invention: a first notch 132 a is provided on the end of the second heat dissipating member 132 close to the fourth fixing member 122 .
[0050] The first notch 132a is provided on the second heat sink 132, so as to reduce damage during processing and reduce the scrap rate, and at the same time increase the heat dissipation space and heat dissipation speed.
[0051] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a further solution of the present invention: the extending end of the third fixing member 121 and the extending end of the fourth fixing member 122 are respectively provided with a pointed tip 12a in the thickness direction.
[0052] The pointed head 12a is provided to facilitate the third fixing member 121 and the fourth fixing member 122 to separate the carbon fiber heating element 340 into two bundles during the process of tightly hooping the carbon fiber heating element 340, thereby achieving a better tightening effect.
[0053] In some embodiments: a double-ended terminal structure for connecting a temperature-sensitive heating wire is formed by cutting and stamping a metal sheet, and includes a heating wire connector 100 and a temperature-sensitive wire connector 200;
[0054] The heating wire connector 100 includes an insulating layer first fixing member 110, a wire core first fixing member 120, a hot wire heat sink 130 and a first plug connector 150, wherein the wire core first fixing member 120 is disposed between the insulating layer first fixing member 110 and the hot wire heat sink 130, and the hot wire heat sink 130 is disposed between the wire core first fixing member 120 and the first plug connector 150, and the four are on the same straight line, and the insulating layer first fixing member 110 and the wire core first fixing member 120 form a groove 160 with an arc-shaped groove bottom;
[0055] The first insulating layer fixing member 110 includes a first fixing member 111 and a second fixing member 112, the first fixing member 111 and the second fixing member 112 are symmetrically arranged, and the first insulating layer fixing member 110 is used to fix the insulating layer 320;
[0056] The first wire core fixing member 120 includes a third fixing member 121 and a fourth fixing member 122, both of which are rectangular, and the third fixing member 121 and the fourth fixing member 122 are arranged symmetrically along the central axis of the groove 160; the first wire core fixing member 120 is used for the carbon fiber heating element 340;
[0057] The heating wire heat sink 130 includes a first heat sink 131 and a second heat sink 132. The first heat sink 131 is a groove structure with a central angle of less than or equal to 90 degrees in the cross section, and the second heat sink 132 is a semicircular groove with a semicircular tube in the cross section. The heating wire heat sink 130 is used for heat dissipation.
[0058] The first connector 150 is a circular tubular structure, and the center line of the first connector 150 and the center line of the slot 160 are on the same straight line;
[0059] The temperature sensing wire joint 200 includes a wire fixing member 210, a connecting member 230 and a second plug connector 270. The wire fixing member 210 includes a ninth fixing member 211 and a tenth fixing member 212. The ninth fixing member 211 and the tenth fixing member 212 are symmetrically arranged. The connecting member 230 is arranged between the wire fixing member 210 and the second plug connector 270.
[0060] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a further solution of the utility model: there is also a first limiting member 140 between the heating wire heat sink 130 and the first connector 150, the first limiting member 140 is in the shape of a circular tube, and its circular tube diameter is larger than the circular tube diameter of the first connector 150, and the center line of the first limiting member 140 is on the same straight line as the center line of the first connector 150.
[0061] During the plugging process, the first limiting member 140 is helpful to limit the first plug-in member 150 .
[0062] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, as a further solution of the present invention: a first chamfer 15a is provided on one end of the first connector 150 away from the heating wire heat sink 130 .
[0063] Providing the chamfer 15a facilitates quick and convenient plugging during the plugging process.
[0064] Figure 1 , Figure 2, Figure 3 , Figure 4 , Figure 5 As shown, as a further solution of the utility model: the first chamfer 15a is a chamfered right angle or a rounded angle.
[0065] The chamfered end of the first connector 150 is in a conical or semi-spherical shape. The chamfer 15a is provided to facilitate quick plugging during the plugging process.
[0066] like Figure 1 , Figure 6 , Figure 7 , Figure 8 As shown, as a further solution of the utility model: the temperature sensing wire joint 200 is provided with an insulating layer second fixing member 220, the insulating layer second fixing member 220 includes a seventh fixing member 221 and an eighth fixing member 222, the seventh fixing member 221 and the eighth fixing member 222 are symmetrically arranged, and the insulating layer second fixing member 220 is used to fix the insulating layer 320; the end of the connecting member 230 away from the second plug-in member 270 is between the wire fixing member 210 and the insulating layer second fixing member 220.
[0067] The seventh fixing member 221 and the eighth fixing member 222 are both rectangular, or both triangular. When they are rectangular, the seventh fixing member 221 and the eighth fixing member 222 are arranged symmetrically along the center line of the slot 160. When they are both triangular, they are arranged symmetrically along the center. The second fixing member 220 for the insulating layer can assist the first fixing member 110 for the insulating layer to better clamp the insulating layer 320.
[0068] like Figures 1 to 8 As shown, as a further solution of the present utility model: the material of the heating wire connector 100 and the temperature sensing wire connector 200 in each of the above solutions is phosphor copper sheet or brass sheet or tinned copper.
[0069] Selecting phosphor copper sheet, brass sheet or tinned copper as the material of the single-head connected carbon fiber heating wire terminal is conducive to matching the heating wire and thus conducting electricity better.
[0070] like Figure 1 , Figure 6 , Figure 7 , Figure 8 As shown, as a further solution of the utility model: a second limiting member 260, a heat sink 250 and a second wire core fixing member 240 are also arranged on the temperature sensing wire joint 200 between the connecting member 230 and the second plug connector 270, and the second limiting member 260, the heat sink 250 and the second wire core fixing member 240 are arranged in sequence on the side of the second plug connector 270 close to the connecting member 230.
[0071] The second limiting member 260 has the same structure as the first limiting member 140;
[0072] The heat sink 250 includes a third heat sink 251 and a fourth heat sink 252. A second notch 25a is provided on the fourth heat sink 252. The heat sink 250, the third heat sink 251, the fourth heat sink 252 and the second notch 25a have the same structures as the heating wire heat sink 130, the first heat sink 131, the second heat sink 132 and the first notch 132a, respectively.
[0073] The second fixing member 240 of the wire core further includes a fifth fixing member 241 and a sixth fixing member 242. The second fixing member 240, the fifth fixing member 241 and the sixth fixing member 242 of the wire core have the same structure as the first fixing member 120, the third fixing member 121 and the fourth fixing member 122 of the wire core respectively.
[0074] Under the condition that the second connector 270 is parallel to the first connector 150, the connector 230 may be perpendicular to the center line of the wire fixture 210 and the second insulating layer fixture 220, or may not be perpendicular. The purpose of such arrangement is to install the insulating layer 320, the temperature sensing wire 330, and the carbon fiber heating element 340 into the connector 230 when necessary, that is, the second connector 270 and the first connector 150 are interchangeable and used to improve the utilization rate. When in use, the second insulating layer fixture 220 is stacked and used together with the first insulating layer fixture 110.
[0075] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A double-ended terminal structure for connecting a temperature-sensitive heating wire, characterized in that: It is formed by cutting and stamping a metal sheet, and comprises a heating wire connector (100) and a temperature sensing wire connector (200); The heating wire connector (100) comprises an insulating layer first fixing member (110), a wire core first fixing member (120) and a first plug connector (150); the wire core first fixing member (120) is arranged between the insulating layer first fixing member (110) and the first plug connector (150); the three are located on the same straight line; the insulating layer first fixing member (110) and the wire core first fixing member (120) form a groove (160) whose bottom is an arc shape; The insulating layer first fixing member (110) comprises a first fixing member (111) and a second fixing member (112), the first fixing member (111) and the second fixing member (112) are symmetrically arranged, and the insulating layer first fixing member (110) is used to fix the insulating layer (320); The first wire core fixing member (120) comprises a third fixing member (121) and a fourth fixing member (122), the third fixing member (121) and the fourth fixing member (122) are both rectangular, the third fixing member (121) and the fourth fixing member (122) are arranged symmetrically along the central axis of the groove (160), and the first wire core fixing member (120) is used for the carbon fiber heating element (340); The first plug-in connector (150) is a circular tubular structure, and the center line of the first plug-in connector (150) and the center line of the slot (160) are on the same straight line; The temperature sensing wire joint (200) comprises a wire fixing member (210), a connecting member (230) and a second plug connector (270), wherein the wire fixing member (210) comprises a ninth fixing member (211) and a tenth fixing member (212), wherein the ninth fixing member (211) and the tenth fixing member (212) are symmetrically arranged, and the connecting member (230) is arranged between the wire fixing member (210) and the second plug connector (270).
2. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 1, characterized in that: The heating wire connector (100) further comprises a heating wire heat sink (130), the heating wire heat sink (130) being arranged between the first fixing member (120) of the wire core and the first plug connector (150), and comprising a first heat sink (131) and a second heat sink (132), the first heat sink (131) being a groove-shaped structure with a central angle of less than or equal to 90 degrees in a cross section, and the second heat sink (132) being a semicircular groove with a semicircular tube-shaped cross section; the heating wire heat sink (130) is used for heat dissipation.
3. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 2, characterized in that: A first notch (132a) is provided on the end of the second heat dissipation member (132) close to the fourth fixing member (122).
4. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 2, characterized in that: The extending end of the third fixing member (121) and the extending end of the fourth fixing member (122) are respectively provided with a pointed tip (12a) in the thickness direction.
5. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 4, characterized in that: There is also a first limiting member (140) between the heating wire heat sink (130) and the first connector (150). The first limiting member (140) is in the shape of a circular tube, and its diameter is larger than the diameter of the first connector (150). The center line of the first limiting member (140) is on the same straight line as the center line of the first connector (150).
6. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 5, characterized in that: A first chamfer (15a) is provided on one end of the first plug-in component (150) away from the heating wire heat sink (130).
7. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 6, characterized in that: The first chamfer (15a) is a chamfered right angle or a rounded angle.
8. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 7, characterized in that: The temperature sensing wire joint (200) is provided with a second insulating layer fixing member (220), the second insulating layer fixing member (220) comprises a seventh fixing member (221) and an eighth fixing member (222), the seventh fixing member (221) and the eighth fixing member (222) are symmetrically arranged, and the second insulating layer fixing member (220) is used to fix the insulating layer (320); the end of the connecting member (230) away from the second plug connector (270) is located between the wire fixing member (210) and the second insulating layer fixing member (220).
9. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to any one of claims 1 to 8, characterized in that: The heating wire connector (100) and the temperature sensing wire connector (200) are made of phosphor copper sheet, brass sheet or tinned copper.
10. The double-ended terminal structure for connecting a temperature-sensitive heating wire according to claim 9, characterized in that: A second limiting member (260), a heat sink (250) and a second core fixing member (240) are also provided on the temperature sensing wire joint (200) between the connecting member (230) and the second plug connector (270); the second limiting member (260), the heat sink (250) and the second core fixing member (240) are sequentially arranged on a side of the second plug connector (270) close to the connecting member (230).