Wiring terminal

Abstract

The utility model provides a wiring terminal. The wiring terminal comprises a terminal seat, a wiring structure and a temperature sensor, the terminal seat is provided with a plurality of wiring cavities; the wiring structure is arranged in the wiring cavity and can fix a wire in the wiring cavity; the temperature sensor is attached to the wiring structure or arranged close to the wiring structure. According to the arrangement, after the wire is connected into the wiring cavity, the wiring structure has a fixing effect on the wire, so that the wiring structure is in contact with the wire, and after the temperature of the wire is increased due to the fact that the wire is electrified to generate heat, the wiring structure can gradually reach a temperature balance state with the wire due to heat transfer; the temperature sensor is directly attached to the wiring structure or close to the wiring structure, so that the measured temperature of the wire is greatly prevented from being influenced by other factors, the precision of a measurement result is high, and the accuracy and precision of temperature measurement of a broken wire access point are improved; the problem that in the prior art, the temperature measurement result of the wire connected to the wiring terminal cannot meet the high-precision requirement is solved.

Description

Technical Field

[0001] This application relates to the technical field of terminal structures, and particularly to a wiring terminal. Background Art

[0002] Currently, in some industrial control modules, such as industrial control TC modules, temperature sensors are generally welded to the PCB board. Wires that need to measure temperature are connected to the wiring terminal, and the solder feet of the wiring terminal are welded to the PCB board. The temperature sensor is electrically connected to the solder feet of the wiring terminal through internal wiring of the PCB.

[0003] In the prior art, often based on the temperature measured by the temperature sensor, different scenarios are simulated in combination with test data, and a certain compensation algorithm is added. Finally, the temperature of the wire to be measured is deduced. However, since the PCB board itself has heat-generating components, affected by the different placement directions and positions of the temperature sensor, as well as the structure and environment around the wiring terminal, the compensation algorithm cannot meet all scenarios. There is still a certain deviation between the obtained temperature and the actual temperature of the wire to be measured, and it cannot meet the scenarios with high-precision requirements. Utility Model Content

[0004] In view of this, this application provides a wiring terminal to solve the problem that the temperature measurement result of the wire connected to the wiring terminal in the prior art cannot meet the high-precision requirements.

[0005] To achieve the above object, this application provides the following technical solutions:

[0006] A wiring terminal, comprising:

[0007] A terminal block, provided with a plurality of wiring cavities;

[0008] A wiring structure, arranged in the wiring cavity and capable of fixing a wire in the wiring cavity;

[0009] A temperature sensor, attached to the wiring structure or arranged close to the wiring structure.

[0010] Optionally, the wiring structure includes:

[0011] A conductive member, arranged in the wiring cavity;

[0012] A pressing spring piece, arranged in the wiring cavity and capable of deforming to press the wire against the conductive member;

[0013] Wherein, the temperature sensor is attached to the conductive member.

[0014] Optionally, the conductive member includes a bottom portion and a side portion that are bent and connected, and the bottom portion and / or the side portion can be in contact with the wire. The temperature sensor is attached to the side of the bottom portion facing away from the wiring cavity or the side of the side portion facing away from the wiring cavity.

[0015] Optionally, the terminal block is provided with an installation groove, and at least a part of the bottom portion or the side portion is exposed to the installation groove, and the temperature sensor is located in the installation groove.

[0016] Optionally, at least a part of the conductive member is provided with an anti-slip structure, and the wire pressing elastic piece can press the wire against the anti-slip structure.

[0017] Optionally, it further includes an electrical connection member provided in the terminal block. The temperature sensor is electrically connected to the electrical connection member, and the electrical connection member extends out of the terminal block and can be electrically connected to the PCB board;

[0018] And / or, the wiring structure is provided with an electrical connection portion, and the electrical connection portion extends out of the terminal block and can be electrically connected to the PCB board.

[0019] Optionally, the temperature sensor is bonded to the wiring structure through a thermal conductive adhesive.

[0020] Optionally, the temperature measurement surface of the temperature sensor is attached to the wiring structure.

[0021] Optionally, the wiring cavity includes a plurality of positive wiring cavities and a plurality of negative wiring cavities. Adjacent positive wiring cavities and negative wiring cavities form a set of wiring cavity groups, and one temperature sensor is correspondingly provided for each set of wiring cavity groups.

[0022] Optionally, in each set of wiring cavity groups, the positive wiring cavity and the negative wiring cavity are arranged along the length direction of the terminal block, and an installation groove is provided on the side facing away from the positive wiring cavity or the negative wiring cavity in the thickness direction of the terminal block. At least a part of the wiring structure is exposed to the installation groove, and the temperature sensor is located in the installation groove;

[0023] Or, in each set of wiring cavity groups, the positive wiring cavity and the negative wiring cavity are symmetrically distributed in the thickness direction of the terminal block, and there is a spacing space between two adjacent sets of wiring cavity groups in the length direction of the terminal block. The installation groove is provided in the spacing space, and at least a part of the wiring structure in the positive wiring cavity and / or the negative wiring cavity is exposed to the installation groove, and the temperature sensor is located in the installation groove.

[0024] The terminal provided by this application includes a terminal base, a wiring structure, and a temperature sensor; the terminal base is provided with a plurality of wiring cavities; the wiring structure is arranged in the wiring cavity and can fix the wire in the wiring cavity; the temperature sensor is attached to the wiring structure or arranged close to the wiring structure. With such an arrangement, after the wire is connected to the wiring cavity, since the wiring structure has a fixing effect on the wire, the wiring structure is in contact with the wire. After the wire generates heat and warms up due to energization, the wiring structure will gradually reach a state of temperature balance with the wire due to heat transfer. And the temperature sensor is directly attached to the wiring structure or close to the wiring structure, so that the temperature of the wire measured is greatly avoided from the influence of other factors, the measurement result has high accuracy, the accuracy and precision of the temperature measurement at the disconnection access point are improved, and the problem that the temperature measurement result of the wire connected to the terminal in the prior art cannot meet the high-precision requirement is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0026] Figure 1 Partial structural schematic diagram of the terminal with the temperature sensor attached to the bottom of the conductive part provided by the embodiment of this application;

[0027] Figure 2 Exploded structural schematic diagram of the terminal with the temperature sensor attached to the bottom of the conductive part provided by the embodiment of this application;

[0028] Figure 3 Partial structural schematic diagram of the terminal with the temperature sensor attached to the side of the conductive part provided by the embodiment of this application;

[0029] Figure 4 Exploded structural schematic diagram of the terminal with the temperature sensor attached to the side of the conductive part provided by the embodiment of this application.

[0030] In Figures 1 - 4 :

[0031] 1. Terminal base; 2. Terminal shell; 3. Temperature sensor; 4. Conductive part; 5. Pressing spring piece; 6. Electrical connection part; 7. Wire; 8. Spring piece release structure;

[0032] 11. Wiring cavity; 12. Installation groove; 13. Protrusion;

[0033] 41. Bottom; 42. Side; 43. Anti-slip structure; 44. Electrical connection part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0035] As Figures 1 - 4 shown, an embodiment of the present application provides a wiring terminal, including a terminal base 1, a wiring structure, and a temperature sensor 3; the terminal base 1 is provided with a plurality of wiring cavities 11 for wires 7 to access. Generally, the terminal base 1 is provided with a wire 7 socket, and the wiring cavities 11 are open and exposed in the terminal base 1. In addition, a terminal shell 2 connected to the terminal base 1 covers the wiring cavities 11; the wiring structure is arranged in the wiring cavities 11 and can fix the end of the wire 7 in the wiring cavities 11; the temperature sensor 3 is attached to the wiring structure or arranged close to the wiring structure. "Close" means that although the temperature sensor 3 is not in direct contact with the wiring structure, the gap between the two is extremely small. The temperature sensor 3 can be in the wiring cavity 11 and in the same space as the wire 7; the temperature sensor 3 can also be in a position outside the wiring cavity 11 and not in the same space as the wire 7. When the wiring terminal is applied, both the wiring structure and the temperature sensor 3 are connected to the PCB board and are electrically conductive.

[0036] With such a setting, after the wire 7 is connected to the wiring cavity 11, since the wiring structure has a fixing effect on the wire 7, the wiring structure is in contact with the wire 7. After the wire 7 generates heat and rises in temperature due to energization, the wiring structure will gradually reach a state of temperature balance with the wire 7 due to heat transfer. And the temperature sensor 3 is directly attached to the wiring structure or close to the wiring structure. In this way, the temperature of the wire 7 measured is greatly avoided from the influence of other factors, and the measurement result has high precision, improving the accuracy and precision of the temperature measurement at the disconnection access point, and solving the problem that the temperature measurement result of the wire 7 connected to the wiring terminal in the prior art cannot meet the high-precision requirements.

[0037] In a specific embodiment, the wiring structure is a combined structure, including a conductive member 4 and a pressing spring piece 5; the conductive member 4 is fixedly arranged in the wiring cavity 11, and the conductive member 4 can be clamped in the wiring cavity 11; the pressing spring piece 5 is clamped in the wiring cavity 11 and is in contact with the conductive member 4. The wire 7 can be inserted between the pressing spring piece 5 and the conductive member 4, and the pressing spring piece 5 can deform and press the wire 7 against the conductive member 4, so that the wire 7 is clamped between the conductive member 4 and the pressing spring piece 5, and the wire 7 is at least electrically conductive with the conductive member 4; wherein, the temperature sensor 3 is attached to the conductive member 4.

[0038] With such a setting, the wire 7 is inserted into the wiring cavity 11 to complete the wiring, which is convenient and fast. The conductive member 4 and the wire 7 can have a large surface contact, and the conductive member 4, as a conductive material, has good thermal conductivity and can well serve as a medium for the temperature sensor 3 to measure temperature.

[0039] It should be noted that the pressing spring piece 5 is limited by the protrusion 13 design in the wiring cavity 11 to be clamped in the wiring cavity 11 and can deform, move and reset within a certain range. In addition, the part of the pressing spring piece 5 for pressing the wire 7 has a tapered shape in the extending direction of the wire 7 with respect to the distance from the conductive member, that is, the wiring structure has self-locking property. A spring piece release structure 8 is also provided in the terminal block 1, which can act on the pressing spring piece 5 to move the pressing spring piece 5 away from the wire 7 so that the wire 7 can be withdrawn. The wiring structure is not limited to the above setting form and can also be other conventional terminal wiring methods in the prior art, such as screw-in type, barrier type, etc.

[0040] Furthermore, the conductive member 4 includes a bottom portion 41 and a side portion 42 which are bent and connected. The conductive member 4 can be set in a groove shape, and the bottom portion 41 and / or the side portion 42 can be in contact with the wire 7. Preferably, the wire 7 is located at the bent portion between the bottom portion 41 and the side portion 42 and is in contact with both the bottom portion 41 and the side portion 42. The temperature sensor 3 is attached to the side of the bottom portion 41 facing away from the wiring cavity 11 or the side of the side portion 42 facing away from the wiring cavity 11.

[0041] With such a setting, the conductive member 4 provides sufficient contact area and access positions for the wire 7, and at the same time provides a sufficient temperature measurement surface for the temperature sensor 3, further enhancing the accuracy of the temperature measurement result. Moreover, the temperature sensor 3 is located outside the wiring cavity 11, does not occupy the space of the wiring cavity 11, does not interfere with the position of the wire 7 during insertion, and is also convenient for the arrangement design of the solder foot structure of the conductive member 4 for connecting to the PCB board and the solder foot structure of the temperature sensor 3 for connecting to the PCB board, facilitating welding with the PCB board. The positions of each structure are arranged reasonably, and the overall assembly feasibility of the terminal is high.

[0042] In a more specific embodiment, an installation groove 12 is provided in the terminal block 1, and at least a part of the surface of the bottom portion 41 or the side portion 42 facing away from the wire 7 is exposed in the installation groove 12. The temperature sensor 3 is located in the installation groove 12 and is attached to the surface of the bottom portion 41 or the side portion 42. In this way, the installation position of the temperature sensor 3 is preset in the terminal block 1, facilitating the assembly operation of the terminal.

[0043] In a preferred embodiment, at least a part of the conductive member 4 is provided with an anti-slip structure 43, and the wire pressing elastic piece 5 can press the wire 7 against the anti-slip structure 43. The anti-slip structure 43 can specifically be arranged oblique teeth or a plurality of protrusions. The position where the anti-slip structure 43 is arranged can specifically be on the side part 42, and the wire pressing elastic piece 5 is arranged opposite to the side part 42. In this way, the connection stability between the wire 7 and the wiring structure is strengthened, which is beneficial to the more reliable safety of the terminal.

[0044] Regarding the connection mode of the wiring structure and the temperature sensor 3 to the PCB board, in an alternative embodiment, the provided terminal further includes an electrical connector 6 installed in the terminal seat 1. There are two electrical connectors 6 which are divided into positive and negative poles. The positive and negative poles of the temperature sensor 3 are respectively welded to the electrical connectors 6 of the positive and negative poles to achieve electrical connection. The electrical connector 6 extends out of the terminal seat 1 and can be electrically connected to the PCB board, so that the result measured by the temperature sensor 3 can be transmitted to the PCB board. The electrical connector 6 can specifically be a welding foot, a welding toe, a welding root, etc., or any other protruding structure in any shape, as long as it can be welded to the PCB board. Of course, it is also feasible that the electrical connector 6 is plugged and electrically conducted with the PCB board;

[0045] And / or, the wiring structure is provided with an electrical connection part 44 integrally formed with the conductive member 4. The electrical connection part 44 extends out of the terminal seat 1 and can be electrically connected to the PCB board. The electrical connection part 44 can specifically be a welding foot, a welding toe, a welding root, etc., or any other protruding structure in any shape, as long as it can be welded to the PCB board. Of course, it is also feasible that the electrical connection part 44 is plugged and electrically conducted with the PCB board.

[0046] In a preferred embodiment, the main body of the temperature sensor 3 is adhesively bonded to the side part 42 or the bottom part 41 of the conductive member 4 of the wiring structure through a heat-conducting adhesive. In this way, the temperature sensor 3 is thermally fixed to the conductive member 4, ensuring that the temperature sensor 3 can be closely attached to the conductive member 4 for temperature measurement and ensuring the reliability of the attachment setting.

[0047] In addition, preferably, the temperature measuring surface of the temperature sensor 3 is attached to the conductive member 4 of the wiring structure, which can maximize the accuracy of temperature measurement.

[0048] Based on the current terminal, it can be known that the connected wires 7 are divided into positive and negative poles. In a specific embodiment, the wiring cavity 11 includes a plurality of positive wiring cavities 11 and a plurality of negative wiring cavities 11. The adjacent positive wiring cavities 11 and negative wiring cavities 11 form a group of wiring cavities 11 groups, and one temperature sensor 3 is correspondingly arranged for each group of wiring cavities 11 groups. After verification, setting one temperature sensor 3 in one loop can obtain a relatively accurate measured temperature result. Setting too many temperature sensors 3 is not conducive to the control of production costs, and will also affect the internal structure layout design and the volume size design of the terminal.

[0049] Further, regarding the positional arrangement relationship between the positive terminal connection cavity 11 and the negative terminal connection cavity 11 in a set of 11 connection cavities, it can be, but is not limited to, the following two ways:

[0050] In each set of 11 connection cavities, the positive terminal connection cavity 11 and the negative terminal connection cavity 11 are arranged along the length direction of the terminal block 1, and an installation groove 12 is provided on the side facing away from the terminal block 1 in the thickness direction of the terminal block 1. At least a part of the wiring structure is exposed in the installation groove 12. The temperature sensor 3 is located in the installation groove 12 and is attached to the bottom 41 of the conductive member 4, as Figure 1 shown;

[0051] Alternatively, in each set of 11 connection cavities, the positive terminal connection cavity 11 and the negative terminal connection cavity 11 are symmetrically distributed in the thickness direction of the terminal block 1, and an interval space is provided between two adjacent sets of connection cavities 11 in the length direction of the terminal block 1. An installation groove 12 is provided in the interval space. At least a part of the wiring structure in the positive terminal connection cavity 11 and / or the negative terminal connection cavity 11 is exposed in the installation groove 12. The temperature sensor 3 is located in the installation groove 12 and is attached to the side portion 42 of the conductive member 4, as Figure 3 shown.

[0052] The basic principles of the present application have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, advantages, effects, etc. mentioned in the present application are only examples and not limitations. It cannot be considered that these advantages, advantages, effects, etc. are essential for each embodiment of the present application. In addition, the above-disclosed specific details are only for the purpose of illustration and facilitating understanding, rather than limitations. The above details do not limit the present application to necessarily adopt the above specific details to implement.

[0053] The block diagrams of the devices, apparatuses, equipment, and systems involved in the present application are only illustrative examples and do not intend to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended words, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used here refer to the word "and / or", and can be used interchangeably with each other, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with each other.

[0054] It should also be noted that in the devices, equipment, and methods of the present application, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of the present application.

[0055] The above description of the disclosed aspects enables any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0056] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of this application are only for more clearly elaborating the technical solutions and cannot be used to limit the protection scope of this application.

[0057] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A terminal block, characterized in that: include: The terminal base (1) is provided with a plurality of wiring chambers (11); A wiring structure, arranged in the wiring cavity (11) and capable of fixing the wire (7) in the wiring cavity (11); A temperature sensor (3) is attached to the wiring structure or arranged close to the wiring structure; The wiring structure comprises a conductive member (4) and a wire pressing spring (5), wherein the conductive member (4) is arranged in the wiring cavity (11); the wire pressing spring (5) is arranged in the wiring cavity (11) and is capable of deforming and pressing the wire (7) onto the conductive member (4); the temperature sensor (3) is attached to the conductive member (4); The conductive member (4) comprises a bottom (41) and a side (42) connected in a bent manner, the bottom (41) and / or the side (42) being capable of contacting a wire (7), and the temperature sensor (3) being attached to a side of the bottom (41) facing away from the wiring cavity (11) or a side of the side (42) facing away from the wiring cavity (11).

2. The connection terminal according to claim 1, characterized in that: The terminal seat (1) is provided with a mounting groove (12), the bottom (41) or the side (42) is at least partially exposed to the mounting groove (12), and the temperature sensor (3) is located in the mounting groove (12).

3. The connection terminal according to claim 1, characterized in that: At least part of the conductive member (4) is provided with an anti-slip structure (43), and the wire pressing spring (5) can press the wire (7) onto the anti-slip structure (43).

4. The connection terminal according to claim 1, characterized in that: It also includes an electrical connector (6) arranged in the terminal seat (1), the temperature sensor (3) being electrically connected to the electrical connector (6), and the electrical connector (6) extending out of the terminal seat (1) and being capable of being electrically connected to a PCB board; And / or, the wiring structure is provided with an electrical connection portion (44), the electrical connection portion (44) extends out of the terminal seat (1) and can be electrically connected to a PCB board.

5. The connection terminal according to claim 1, characterized in that: The temperature sensor (3) is bonded to the wiring structure by means of heat-conducting adhesive.

6. The connection terminal according to claim 1, characterized in that: The temperature measuring surface of the temperature sensor (3) is attached to the wiring structure.

7. The connection terminal according to claim 1, characterized in that: The wiring cavity (11) comprises a plurality of positive wiring cavities (11) and a plurality of negative wiring cavities (11), wherein adjacent positive wiring cavities (11) and negative wiring cavities (11) form a group of wiring cavities (11), and one temperature sensor (3) is correspondingly arranged in one group of wiring cavities (11).

8. The connection terminal according to claim 7, characterized in that: In each group of the wiring cavities (11), the positive wiring cavity (11) and the negative wiring cavity (11) are arranged along the length direction of the terminal seat (1), and the positive wiring cavity (11) or the negative wiring cavity (11) is provided with a mounting groove (12) on the side away from the terminal seat (1) in the thickness direction, the wiring structure is at least partially exposed to the mounting groove (12), and the temperature sensor (3) is located in the mounting groove (12); Alternatively, in each group of the wiring cavities (11), the positive wiring cavities (11) and the negative wiring cavities (11) are symmetrically distributed in the thickness direction of the terminal seat (1), and a spacing space is provided between two adjacent groups of the wiring cavities (11) in the length direction of the terminal seat (1), and the mounting groove (12) is provided in the spacing space, and the wiring structure in the positive wiring cavity (11) and / or the negative wiring cavity (11) is at least partially exposed to the mounting groove (12), and the temperature sensor (3) is located in the mounting groove (12).

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