Connecting wire harness of high-temperature detector

Abstract

The utility model discloses a connecting wire harness of a high-temperature detector, which comprises a first wire harness, a second wire harness and a functional PCB (printed circuit board) module connected between the first wire harness and the second wire harness. The functional PCB module comprises a metal shell, a functional PCB arranged in the metal shell and used for converting signal data detected by the high temperature detector into actual temperature reading, and an LED indicating lamp arranged on the functional PCB and used for displaying the working state. The light guide column is arranged on the metal shell and corresponds to the LED indicating lamp, the plastic shell is fixed to the periphery of the metal shell in a sealed mode, the end of the light guide column is further exposed out of the surface of the plastic shell, and the end of the first wire harness and the end of the second wire harness are both fixedly connected with the metal shell. The end parts of the first wire harness and the second wire harness extend into the metal shell and are electrically connected with the functional PCB, and the two ends of the plastic shell respectively wrap the end parts of the first wire harness and the second wire harness.

Description

Technical Field:

[0001] The utility model relates to the technical field of wire harness products, and particularly refers to a connecting wire harness for a high-temperature detector. Background Art:

[0002] A wire harness generally consists of wires, insulating sheaths, terminal blocks, and wrapping materials.

[0003] The Chinese utility model patent with the application number 202321382224.4 discloses a high-temperature resistant sensor wire harness, including an inner tube. A support seat is arranged on the outer side of the inner tube. Equally spaced placement holes are formed inside the support seat. A wire harness body is arranged inside the placement holes. The outer side wall of the support seat is fixedly connected with an insulating layer. A corrosion-resistant layer is arranged on the outer side of the insulating layer. A heat-insulating sleeve is arranged on the outer side of the corrosion-resistant layer. A high-temperature resistant bellows is fixedly connected to the outer side of the heat-insulating sleeve.

[0004] When the above high-temperature resistant sensor wire harness is specifically used, it is directly connected to the sensor to receive the data detected by the sensor. However, this high-temperature resistant sensor wire harness only has the function of data transmission and cannot display its own working state. Especially when the length of this high-temperature resistant sensor wire harness is relatively long, the user cannot intuitively know the working state of this high-temperature resistant sensor wire harness, that is, it cannot timely solve the problem that the high-temperature resistant sensor wire harness is not conducting and cannot work stably, etc., and it is not convenient to use. Moreover, this high-temperature resistant sensor wire harness itself has no data conversion function. After the detector terminal receives the detected temperature signal data, it then converts the temperature signal data into an actual reading, which will make the circuit of the detector terminal complex, and the requirement for the size of the PCB board is relatively large, thereby causing the size of the entire detector terminal to also become larger, and the use requirement of this detector terminal is relatively high.

[0005] In view of this, the inventor of the present invention proposes the following technical solutions. Summary of the Utility Model:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a connecting wire harness for a high-temperature detector.

[0007] To solve the above technical problems, the present utility model adopts the following technical solutions: The connecting wire harness of the high-temperature detector includes: a first wire harness, a second wire harness, and a functional PCB board module connected between the first wire harness and the second wire harness. The functional PCB board module includes a metal shell, a functional PCB board disposed inside the metal shell and used to convert the signal data detected by the high-temperature detector into an actual temperature reading, an LED indicator disposed on the functional PCB board and used to display the working state, a light guide column disposed on the metal shell and corresponding to the LED indicator, and a plastic shell hermetically fixed around the metal shell. The end of the light guide column also protrudes from the surface of the plastic shell. The ends of the first wire harness and the second wire harness are both fixedly connected to the metal shell, and the ends of the first wire harness and the second wire harness both extend into the metal shell and are electrically connected to the functional PCB board. The two ends of the plastic shell respectively cover the ends of the first wire harness and the second wire harness.

[0008] Furthermore, in the above technical solution, an outwardly protruding blocking portion is provided on the outer periphery of the middle of the light guide column. A first through hole penetrating its inner cavity is provided on the metal shell. A window is provided on the surface of the plastic shell, and a stepped groove is provided at the lower opening of the window. The lower end of the light guide column is fixedly inserted through the first through hole on the metal shell and extends into the inner cavity of the metal shell. The blocking portion blocks outside the upper edge of the first through hole, and the upper end of the light guide column is fixedly inserted through the window of the plastic shell, and the blocking portion is fixedly embedded in the stepped groove.

[0009] Furthermore, in the above technical solution, the upper end of the light guide column and the window of the plastic shell are also hermetically fixed by glue.

[0010] Furthermore, in the above technical solution, the metal shell includes a metal upper shell and a metal lower shell that are fitted and fixed up and down. First and second wrapping pieces are respectively provided at both ends of the metal upper shell. The first and second wrapping pieces are respectively wrapped and fixed to the ends of the first wire harness and the second wire harness. Third and fourth wrapping pieces are respectively provided at both ends of the metal lower shell. The third and fourth wrapping pieces are respectively wrapped and fixed outside the first and second wrapping pieces.

[0011] Furthermore, in the above technical solution, a plurality of first positioning grooves are provided at the lower edge of the metal upper shell, and a plurality of positioning protrusions are provided at the upper edge of the metal lower shell. The positioning protrusions are embedded in the first positioning grooves.

[0012] Furthermore, in the above technical solution, both the metal upper shell and the metal lower shell are provided with cutouts for reducing stress.

[0013] Furthermore, in the above technical solution, the plastic shell includes a plastic upper shell and a plastic lower shell that are butted up and down and fixed together by ultrasonic fusion.

[0014] Furthermore, in the above technical solution, an ultrasonic fusion line is formed at the lower edge of the plastic upper shell, and a second positioning groove is further provided on the lower end surface of the plastic upper shell; the plastic lower shell is provided with a second positioning post corresponding to the second positioning groove, and the second positioning post is inlaid and fixed with the second positioning groove to form a positioning.

[0015] Furthermore, in the above technical solution, the plastic lower shell is provided with a first accommodating groove for accommodating the metal lower shell, a first limiting groove and a second limiting groove on both sides of the first accommodating groove, and a first covering groove and a second covering groove on the sides of the first limiting groove and the second limiting groove respectively; the plastic upper shell is provided with a second accommodating groove for accommodating the metal upper shell, a third limiting groove and a fourth limiting groove on both sides of the second accommodating groove, and a third covering groove and a fourth covering groove on the sides of the third limiting groove and the fourth limiting groove respectively; the first limiting groove is docked with the third limiting groove and wraps and limits the third wrapping piece after wrapping, the second limiting groove is docked with the fourth limiting groove and wraps and limits the fourth wrapping piece after wrapping, the first covering groove is docked with the third covering groove to wrap and position the end of the first wire harness, and the second covering groove is docked with the fourth covering groove to wrap and position the end of the second wire harness.

[0016] Furthermore, in the above technical solution, both the first covering groove and the third covering groove are also sealed and fixed with the end of the first wire harness by glue; both the second covering groove and the fourth covering groove are also sealed and fixed with the end of the second wire harness by glue.

[0017] After adopting the above technical solution, the present utility model has the following beneficial effects compared with the prior art:

[0018] 1. The present utility model adds a functional PCB board module. The functional PCB board in the functional PCB board module is provided with an LED indicator for displaying the working state. When the connecting wire harness of the high-temperature detector of the present utility model works normally, the LED indicator emits green light, or, if the connecting wire harness of the high-temperature detector of the present utility model is in an abnormal state, the LED indicator emits red light and is transmitted through a light guide column, so as to display its own working state. By being transmitted through the light guide column, its own working state can be displayed. The user can very intuitively know the working state of the present utility model by observing the different indicator lights emitted by the functional PCB board module. If it is in an abnormal state, the user can immediately know the problem and deal with it in time to ensure the normal progress of the work.

[0019] 2. The functional PCB board module is used to convert the signal data detected by the high-temperature detector into an actual temperature reading, which is directly transmitted to the detector terminal. The detector terminal does not need to have the function of converting the signal data detected by the high-temperature detector into an actual temperature reading. That is, the PCB board of the detector terminal can be made smaller, and the whole detector terminal has a smaller volume. In particular, a small-volume display device for displaying data can be selected for the detector terminal, which has higher versatility and lower requirements.

[0020] 3. The present utility model also adds a metal shell to improve the strength of the overall structure of the functional PCB board module. Then, a plastic shell is arranged outside the metal shell. Its structure is extremely stable, which can ensure the service life of the product. Moreover, the metal shell also plays a role in shielding the interference of external signals to the functional PCB board, the first wire harness and the second wire harness, and ensuring the signal and data transmission quality between the functional PCB board and the first wire harness and the second wire harness. Description of the Drawings:

[0021] Figure 1 is a three-dimensional view of the present utility model;

[0022] Figure 2 is a three-dimensional view of another perspective of the present utility model;

[0023] Figure 3 is an exploded three-dimensional view of the present utility model;

[0024] Figure 4 is a three-dimensional view of the plastic upper shell in the present utility model;

[0025] Figure 5 is a cross-sectional view of the present utility model;

[0026] Figure 6 is a three-dimensional view of the present utility model after removing the plastic shell. Detailed Embodiment:

[0027] The present utility model will be further described below in conjunction with specific embodiments and drawings.

[0028] See Figure 1-6As shown, it is a connecting wire harness of a high-temperature detector, which includes: a first wire harness 1, a second wire harness 2, and a functional PCB board module 300 connected between the first wire harness 1 and the second wire harness 2. The functional PCB board module 300 can not only connect the first wire harness 1 and the second wire harness 2 to form an electrical connection between the first wire harness 1 and the second wire harness 2. In specific use, the first wire harness 1 is connected to the high-temperature detector, and the second wire harness 2 is connected to the display device (of course, it can also be other detector terminals). The functional PCB board module 300 is used to convert the signal data detected by the high-temperature detector into an actual temperature reading, and the actual temperature reading is directly transmitted to the display device and displayed by the display device.

[0029] Specifically, the functional PCB board module 300 includes a metal housing 3, a functional PCB board 4 disposed within the metal housing 3 and used to convert the signal data detected by the high-temperature detector into an actual temperature reading, an LED indicator light 5 disposed on the functional PCB board 4 and used to display the working state, a light guide column 6 disposed on the metal housing 3 and corresponding to the LED indicator light 5, and a plastic housing 7 hermetically fixed to the periphery of the metal housing 3. The end of the light guide column 6 also protrudes from the surface of the plastic housing 7. The ends of the first wire harness 1 and the second wire harness 2 are both fixedly connected to the metal housing 3, and the ends of the first wire harness 1 and the second wire harness 2 both extend into the metal housing 3 and are electrically connected to the functional PCB board 4. The two ends of the plastic housing 7 respectively cover the ends of the first wire harness 1 and the second wire harness 2 to ensure the stability of the assembly structure. The present utility model adds a functional PCB board module 300, which is used to convert the signal data detected by the high-temperature detector into an actual temperature reading. The actual temperature reading is directly transmitted to the detector terminal, and the detector terminal does not need to have the function of converting the signal data detected by the high-temperature detector into an actual temperature reading. That is, the PCB board of the detector terminal can be made smaller, and the entire detector terminal has a smaller volume. In particular, the detector terminal can select a small-sized display device for displaying data, which has higher versatility and lower requirements. In addition, the functional PCB board 4 in the functional PCB board module 300 is provided with an LED indicator light 5 for displaying the working state. When the connection wire harness of the high-temperature detector of the present utility model is working normally, the LED indicator light 5 emits green light. Or, if the connection wire harness of the high-temperature detector of the present utility model is in an abnormal state, the LED indicator light 5 emits red light and is transmitted through the light guide column 6, so as to display its own working state. By being transmitted through the light guide column 6, its own working state can be displayed. The user can very intuitively know the working state of the present utility model by observing the different indicator lights emitted by the functional PCB board module 300. If it is in an abnormal state, the user can immediately know the problem and deal with it in time to ensure the normal progress of the work. In addition, the present utility model also adds a metal housing 3 to improve the strength of the overall structure of the functional PCB board module 300. Then, a plastic housing is provided outside the metal housing 3, and its structure is extremely stable, which can ensure the service life of the product. Moreover, the metal housing 3 also plays a role in shielding the interference of external signals to the functional PCB board 4, the first wire harness 1 and the second wire harness 2, and ensuring the signal and data transmission quality between the functional PCB board 4 and the first wire harness 1 and the second wire harness 2.

[0030] The assembly structure of the light guide column 6 with the metal housing 3 and the plastic housing 7 is as follows:

[0031] A blocking portion 61 protruding outward is provided on the outer periphery of the middle part of the light guide column 6. A first through hole 301 penetrating its inner cavity is provided on the metal housing 3. A window 701 is provided on the surface of the plastic housing 7, and a stepped groove 702 is provided at the lower opening of the window 701. The lower end of the light guide column 6 is inserted and fixed in the first through hole 301 on the metal housing 3 and extends into the inner cavity of the metal housing 3. The blocking portion 61 is blocked outside the upper edge of the first through hole 301, thus ensuring that the light guide column 6 is not over-inserted into the metal housing 3. And the upper end of the light guide column 6 is inserted and fixed in the window 701 of the plastic housing 7, and the blocking portion 61 is embedded and fixed in the stepped groove 702. Thus, the metal housing 3 and the plastic housing 7 clamp and position the blocking portion 61 of the light guide column 6 in a clamping manner. At the same time, the stepped groove 702 is used to limit the blocking portion 61, thus ensuring that the light guide column 6 forms a stable assembly with the metal housing 3 and the plastic housing 7, and its assembly structure is simple. Wherein, the upper end of the light guide column 6 and the window 701 of the plastic housing 7 are also sealed and fixed with glue, thus achieving the purpose of dust-proof and waterproof.

[0032] The metal housing 3 includes a metal upper shell 31 and a metal lower shell 32 which are fitted and fixed up and down. First wrapping pieces 311 and second wrapping pieces 312 are respectively provided at both ends of the metal upper shell 31. The first wrapping pieces 311 and the second wrapping pieces 312 are respectively wrapped and fixed with the ends of the first wire harness 1 and the second wire harness 2. Third wrapping pieces 321 and fourth wrapping pieces 322 are respectively provided at both ends of the metal lower shell 32. The third wrapping pieces 321 and the fourth wrapping pieces 322 are respectively wrapped and fixed outside the first wrapping pieces 311 and the second wrapping pieces 312. Thus, a stable assembly is ensured between the metal housing 3 and the ends of the first wire harness 1 and the second wire harness 2, and its assembly structure is simple and the processing is easy.

[0033] A plurality of first positioning grooves 313 are provided at the lower edge of the metal upper shell 31, and a plurality of positioning convex portions 323 are provided at the upper edge of the metal lower shell 32. The positioning convex portions 323 are embedded in the first positioning grooves 313, and a more stable and firm metal housing 3 can be formed, and it has a better shielding effect.

[0034] Notches 30 for reducing stress are provided on both the metal upper shell 31 and the metal lower shell 32, which is convenient for installation.

[0035] The plastic housing 7 includes a plastic upper shell 71 and a plastic lower shell 72 which are butted up and down and fixed together by ultrasonic fusion. Its structure is simple and the sealing performance is good.

[0036] Among them, an ultrasonic fusion line is formed on the lower edge of the plastic upper shell 71, and a second positioning groove 711 is further provided on the lower end surface of the plastic upper shell 71; the plastic lower shell 72 is provided with a second positioning post 721 corresponding to the second positioning groove 711, and the second positioning post 721 is fixedly embedded with the second positioning groove 711 to form a positioning, so as to ultrasonically fuse and fix the plastic upper shell 71 and the plastic lower shell 72 together in the later stage.

[0037] The plastic lower shell 72 is provided with a first accommodation groove 722 for accommodating the metal lower shell 32, a first limiting groove 723 and a second limiting groove 724 on both sides of the first accommodation groove 722, and a first covering groove 725 and a second covering groove 726 on the sides of the first limiting groove 723 and the second limiting groove 724 respectively; the plastic upper shell 71 is provided with a second accommodation groove 712 for accommodating the metal upper shell 31, a third limiting groove 713 and a fourth limiting groove 714 on both sides of the second accommodation groove 712, and a third covering groove 715 and a fourth covering groove 716 on the sides of the third limiting groove 713 and the fourth limiting groove 714 respectively; the first limiting groove 723 is docked with the third limiting groove 713 and wraps and limits the third tab 321 after being wrapped, the second limiting groove 724 is docked with the fourth limiting groove 714 and wraps and limits the fourth tab 322 after being wrapped, the first covering groove 725 is docked with the third covering groove 715 to wrap and position the end of the first wire harness 1, and the second covering groove 726 is docked with the fourth covering groove 716 to wrap and position the end of the second wire harness 2, thereby ensuring a stable assembly of the plastic housing 7, the metal housing 3, the first wire harness 1 and the end of the second wire harness 2, and the assembly structure is extremely stable.

[0038] A glue is also used for sealing and fixing between both the first covering groove 725 and the third covering groove 715 and the end of the first wire harness 1, which has an excellent waterproof and dustproof effect; a glue is also used for sealing and fixing between both the second covering groove 726 and the fourth covering groove 716 and the end of the second wire harness 2, which has an excellent waterproof and dustproof effect.

[0039] It is worth mentioning that the circuit for converting the signal data detected by the high-temperature detector into an actual temperature reading is a prior art and will not be elaborated here one by one. The present utility model only moves this part of the circuit from the detector terminal to the functional PCB board 4 and does not make improvements to the circuit itself. For example, a temperature instrument with a digital display function can be referred to. An electronic thermometer also converts the signal data detected by the temperature sensor into an actual temperature reading, which will not be elaborated in detail here.

[0040] In summary, the utility model adds a functional PCB board module 300, which is used to convert the signal data detected by the high-temperature detector into an actual temperature reading. This actual temperature reading is directly transmitted to the detector terminal, and the detector terminal does not need to have the function of converting the signal data detected by the high-temperature detector into an actual temperature reading. That is, the PCB board of the detector terminal can be made smaller, and the whole detector terminal is smaller. In particular, a small-sized display device for displaying data can be selected for the detector terminal, which has higher versatility and lower requirements. In addition, an LED indicator light 5 for displaying the working state is provided on the functional PCB board 4 in the functional PCB board module 300. When the connection harness of the high-temperature detector of the utility model works normally, the LED indicator light 5 emits green light. Or, if the connection harness of the high-temperature detector of the utility model is in an abnormal state, the LED indicator light 5 emits red light and is transmitted through the light guide column 6, so as to display its own working state. By being transmitted through the light guide column 6, its own working state can be displayed. The user can very intuitively know the working state of the utility model by observing the different indicator lights emitted by the functional PCB board module 300. If it is in an abnormal state, the user can immediately know the problem and deal with it in time to ensure the normal progress of the work. In addition, the utility model also adds a metal shell 3 to improve the strength of the overall structure of the functional PCB board module 300, and then a plastic shell is arranged outside the metal shell 3. Its structure is extremely stable, which can ensure the service life of the product. Moreover, the metal shell 3 also plays a role in shielding the interference of external signals on the functional PCB board 4, the first wire harness 1 and the second wire harness 2, and ensuring the signal and data transmission quality between the functional PCB board 4 and the first wire harness 1 and the second wire harness 2.

[0041] Certainly, the above are only specific embodiments of the utility model and do not limit the scope of implementation of the utility model. Any equivalent changes or modifications made according to the structure, features and principles described in the scope of the patent application of the utility model should be included in the scope of the patent application of the utility model.

Claims

1. The connection harness of the high temperature detector is characterized by: It includes: A first wiring harness (1), a second wiring harness (2), and a functional PCB board module (300) connected between the first wiring harness (1) and the second wiring harness (2), the functional PCB board module (300) comprising a metal shell (3), a functional PCB board (4) arranged in the metal shell (3) and used for converting signal data detected by a high temperature detector into actual temperature readings, an LED indicator light (5) arranged on the functional PCB board (4) and used for displaying a working state, a light guide column (6) arranged on the metal shell (3) and corresponding to the LED indicator light (5), and a plastic shell (7) sealed and fixed to the outer periphery of the metal shell (3), the end of the light guide column (6) also exposed on the surface of the plastic shell (7), the ends of the first wiring harness (1) and the second wiring harness (2) are both fixedly connected to the metal shell (3), and the ends of the first wiring harness (1) and the second wiring harness (2) are both extended into the metal shell (3) and electrically connected to the functional PCB board (4), and the two ends of the plastic shell (7) also respectively cover the ends of the first wiring harness (1) and the second wiring harness (2).

2. The connection harness of the high temperature detector according to claim 1, characterized in that: The light guide column (6) is provided with a blocking portion (61) protruding outward on the periphery of the middle part, the metal shell (3) is provided with a first through hole (301) penetrating the inner cavity thereof, the surface of the plastic shell (7) is provided with a window (701), and a stepped groove (702) is provided at the lower opening of the window (701), the lower end of the light guide column (6) is fixedly inserted into the first through hole (301) on the metal shell (3) and extends into the inner cavity of the metal shell (3), the blocking portion (61) blocks the upper edge of the first through hole (301), and the upper end of the light guide column (6) is fixedly inserted into the window (701) of the plastic shell (7), and the blocking portion (61) is embedded and fixed in the stepped groove (702).

3. The connection harness of the high temperature detector according to claim 2, characterized in that: The upper end of the light guide column (6) and the window (701) of the plastic housing (7) are also sealed and fixed by glue.

4. The connecting harness of the high temperature detector according to any one of claims 1 to 3, characterized in that: The metal shell (3) comprises a metal upper shell (31) and a metal lower shell (32) which are fixedly engaged with each other, the two ends of the metal upper shell (31) are respectively provided with a first wrapping sheet (311) and a second wrapping sheet (312), the first wrapping sheet (311) and the second wrapping sheet (312) are respectively wrapped and fixed to the ends of the first wire harness (1) and the second wire harness (2), the two ends of the metal lower shell (32) are respectively provided with a third wrapping sheet (321) and a fourth wrapping sheet (322), the third wrapping sheet (321) and the fourth wrapping sheet (322) are respectively wrapped and fixed to the outside of the first wrapping sheet (311) and the second wrapping sheet (312).

5. The connection harness of the high temperature detector according to claim 4, characterized in that: The lower edge of the metal upper shell (31) is provided with a plurality of first positioning grooves (313), and the upper edge of the metal lower shell (32) is provided with a plurality of positioning protrusions (323), and the positioning protrusions (323) are embedded in the first positioning grooves (313).

6. The connection harness of the high temperature detector according to claim 4, characterized in that: The metal upper shell (31) and the metal lower shell (32) are both provided with cutouts (30) for reducing stress.

7. The connection harness of the high temperature detector according to claim 4, characterized in that: The plastic shell (7) comprises a plastic upper shell (71) and a plastic lower shell (72) which are butt-jointed and fixed together by ultrasonic fusion.

8. The connection harness of the high temperature detector according to claim 7, characterized in that: An ultrasonic fusion line is formed on the lower edge of the plastic upper shell (71), and a second positioning groove (711) is also provided on the lower end surface of the plastic upper shell (71); the plastic lower shell (72) is provided with a second positioning column (721) corresponding to the second positioning groove (711), and the second positioning column (721) is embedded and fixed in the second positioning groove (711) to form a positioning.

9. The connection harness of the high temperature detector according to claim 7, characterized in that: The plastic lower shell (72) is provided with a first accommodating groove (722) for accommodating the metal lower shell (32), a first limiting groove (723) and a second limiting groove (724) located on both sides of the first accommodating groove (722), and a first covering groove (725) and a second covering groove (726) located on the sides of the first limiting groove (723) and the second limiting groove (724); the plastic upper shell (71) is provided with a second accommodating groove (712) for accommodating the metal upper shell (31), a third limiting groove (713) and a fourth limiting groove (714) located on both sides of the second accommodating groove (712), and a first covering groove (725) and a second covering groove (726) located on the sides of the first limiting groove (723) and the second limiting groove (724). The first limiting groove (723) is connected to the third limiting groove (713) and wraps the third wrapping sheet (321) after the limiting wrapping, the second limiting groove (724) is connected to the fourth limiting groove (714) and wraps the fourth wrapping sheet (322) after the limiting wrapping, the first wrapping groove (725) is connected to the third wrapping groove (715) to wrap and position the end of the first wiring harness (1), and the second wrapping groove (726) is connected to the fourth wrapping groove (716) to wrap and position the end of the second wiring harness (2).

10. The connection harness of the high temperature detector according to claim 9, characterized in that: The first coating groove (725) and the third coating groove (715) are both sealed and fixed to the end of the first wiring harness (1) by glue; and the second coating groove (726) and the fourth coating groove (716) are both sealed and fixed to the end of the second wiring harness (2) by glue.

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