Signal test wire and device
The signal test line design with a linkage protrusion and multiple connection lines addresses insulation and contact issues, ensuring reliable signal transmission and safety by integrating with resistance boxes without cutting insulation.
Patent Information
- Application Number
- CN202420862094.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-04-24
AI Technical Summary
When the existing single-port wire is connected in parallel, the insulation layer needs to be cut or connected to other wires, resulting in degradation of insulation performance, poor contact, falling off and safety hazards, affecting measurement accuracy and safety.
A signal test wire is designed, including the body, the first link protrusion, the signal connection line and the wiring post. By setting the link protrusion on one side of the body, the signal connection line is used for signal transmission and instrument connection respectively. The wiring post is conveniently connected through the wire jack to avoid additional openings and insulation layer peeling.
It ensures the insulation performance of the conductor, avoids inaccurate measurement and safety hazards, realizes accurate signal transmission and convenient connection, and adapts to a variety of connection methods.
Smart Images
Figure CN223109251U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of signal testing, in particular to a signal testing wire and device. Background Art
[0002] At present, in some electrical test occasions, it is necessary to monitor the signals of relevant measuring points. Most of them transmit the signals of the measuring points to the test instrument through wires for monitoring. For existing wires, most of them are single-port wires, that is, one end is for input and the other end is for output. In addition, in actual use, different wires also need to be connected in series and parallel to obtain the true value of the measuring point signal.
[0003] For some special signal measuring points, when connecting wires in series and parallel, it is necessary to additionally connect a resistor to the wire. At this time, it is necessary to cut open the insulation layer of the wire, and then connect the wire to the resistor, conductive clip or even other types of wires. This will first lead to poor insulation performance of the wire and potential leakage. Secondly, due to multiple connection links in the wire, it is easy to cause poor contact, detachment of the wire, and even introduce unknown loop resistance values, thereby reducing the voltage value or current value of the signal loop of the test signal. Finally, the disorderly connection of the wires will affect the entire measuring point control cabinet, and even affect the signals of other measuring points, resulting in distortion of the measuring points and seriously affecting safety production in severe cases. Summary of the Utility Model
[0004] In view of the deficiencies of the background art, the utility model provides a signal testing wire and device. The technical problem to be solved is that when the existing single-port wire is actually used in parallel with a resistor, it is necessary to cut open the insulation layer of the wire or connect other wires and connection clips, which will affect the insulation performance of the wire, introduce additional loop resistance, cause the wire to fall off, short-circuit and have poor contact, resulting in inaccurate measurement values and potential safety hazards.
[0005] To solve the above technical problems, in a first aspect, the utility model provides the following technical solution: A signal testing wire includes a body. One side of the body is provided with a first connection protrusion for plugging. The other side of the body is provided with at least two signal connection wires. The inner ends of all signal connection wires are electrically connected to each other. The outer end of each signal connection wire is provided with a second connection protrusion for plugging. The signal input from one side of the body is transmitted along the body to each signal connection wire.
[0006] In a certain implementation manner of the first aspect, an insulating cap is further sleeved on one side of the body, and the insulating cap covers the first connection protrusion.
[0007] In a certain embodiment of the first aspect, the utility model further includes a terminal block. A signal wire is arranged inside the terminal block. A wire insertion hole is provided at the bottom of the terminal block. The second connection protrusions on at least one signal connection wire are inserted into the wire insertion hole and electrically connected to the signal wire.
[0008] In a certain embodiment of the first aspect, a retractable outer shell is provided on the terminal block. When the outer shell retracts, one end of the signal wire away from the wire insertion hole extends out.
[0009] In a certain embodiment of the first aspect, a telescopic adjustment part is provided at one end of the outer shell close to the wire insertion hole. The width of the telescopic adjustment part is greater than the width of the outer shell.
[0010] In a certain embodiment of the first aspect, one end of the signal wire away from the wire insertion hole is in a curved shape.
[0011] In a certain embodiment of the first aspect, a signal wire insulating cap is sleeved on one end of the terminal block away from the wire insertion hole.
[0012] In the second aspect, the utility model provides a signal testing device, which includes two signal testing wires as described above, and further includes a resistance box. At least one adjustment branch is provided on the resistance box. Each adjustment branch includes a first wire insertion hole, an adjustable resistor, an ammeter and a second wire insertion hole. The first wire insertion hole is electrically connected to the adjustable resistor, the ammeter and the second wire insertion hole in sequence through a wire. The first connection protrusions of the two signal testing wires are respectively inserted into the first wire insertion hole and the second wire insertion hole.
[0013] In a certain embodiment of the second aspect, one signal connection wire of the two signal testing wires is used to connect to a measurement point, and the other signal connection wire of the two signal testing wires is used to connect to a test detection instrument.
[0014] The beneficial effects of the utility model compared with the prior art are as follows:
[0015] First: By arranging the first connection protrusion on one side of the body of the test wire of the utility model, one side of the body can be inserted into the resistance box, so as to be connected to the resistance, without additionally opening holes in the wire or stripping the insulating layer on the wire, thus ensuring the insulation performance of the wire and avoiding inaccurate measurement when the wire is actually used.
[0016] Second: By arranging at least two signal connection wires on the other side of the body, one signal connection wire is used for signal transmission, and the other signal connection wire can transmit the detected signal to the test detection instrument for testing; it not only ensures the normal measurement of the original signal measurement point loop, but also ensures the real-time and accurate acquisition of the test instrument.
[0017] III: By setting an integrated terminal and a wire jack at the bottom of the terminal, when the terminal is needed, the second connection protrusion on the signal connection wire can be inserted into the wire jack, and when the terminal is not needed, it can be removed, achieving convenient application; moreover, by setting a signal wire insulating cap, the signal wire can be prevented from being exposed outside; finally, by setting a curved signal wire, the signal wire can be electrically connected by means of hanging, plugging, and terminal screw fixing, and the wiring method is flexible and variable. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic structural diagram of the signal test wire in the embodiment;
[0019] Figure 2 It is a schematic structural diagram of the terminal in the embodiment;
[0020] Figure 3 It is a schematic structural diagram of the resistance box in the embodiment;
[0021] Figure 4 It is a schematic electrical structure wiring diagram of the resistance box in the embodiment;
[0022] Figure 5 It is an experimental connection schematic diagram of the signal test device in the embodiment. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0023] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.
[0024] Embodiment 1
[0025] As Figure 1 shown, a signal test wire includes a body 1. A first connection protrusion 2 for plugging is provided on one side of the body 1, and two signal connection wires 3 are provided on the other side of the body 1. The inner ends of all the signal connection wires 3 are electrically connected to each other, and a second connection protrusion 4 for plugging is provided at the outer end of each signal connection wire 3. The signal input from one side of the body 1 is transmitted along the body 1 to each signal connection wire 3.
[0026] In actual use, the test wire of the present invention has a first connection protrusion 2 provided on one side of the body 1, so that one side of the body 1 can be inserted into the resistance box, thereby connecting with the resistance, without the need to drill holes in the wire or strip the insulation layer on the wire, thus ensuring the insulation performance of the wire and avoiding inaccurate measurement when the wire is actually used.
[0027] In actual use, one of the two signal connection lines 3 is used for signal transmission, and the other signal connection line 3 is used to transmit the signal to the test instrument.
[0028] In some embodiments, a plurality of signal connection lines 3 can be provided on the other side of the body 1 to meet the connection requirements for multiple test instruments to monitor the same signal.
[0029] In actual use, when the first connection protrusion 2 on one side of the body 1 is not inserted into the resistance box, the first connection protrusion 2 is exposed outside. In order to protect one side of the body 1, Figure 1 an insulating cap 5 is also sleeved on one side of the body 1, and the insulating cap 5 covers the first connection protrusion 2.
[0030] In this embodiment, the utility model further includes a terminal block 6 as shown in Figure 2 . A signal line 60 is provided inside the terminal block 6, and a wire jack 61 is provided at the bottom of the terminal block 6. The second connection protrusion 4 on one signal connection line 3 is inserted into the wire jack 61 and electrically connected to the signal line 61.
[0031] In actual use, the wire 60 on the terminal block 6 can be connected to the test and detection instrument, and then the second connection protrusion 4 is inserted into the wire jack 61 to complete the signal transmission.
[0032] Furthermore, in this embodiment, the terminal block 6 is provided with a telescopic outer shell 62. When the outer shell 62 is in place, the signal line 60 does not extend out. The state at this time is as shown in the left figure in Figure 2 . When the outer shell 62 retracts, the end of the signal line 60 away from the wire jack 61 extends out. The state at this time is as shown in the right figure in Figure 2 .
[0033] Among them, a telescopic adjustment portion 63 is provided at one end of the outer shell 62 close to the wire jack 61. The width of the telescopic adjustment portion 63 is greater than the width of the outer shell 62, so that the outer shell 62 can be driven to retract by operating the telescopic adjustment portion 63.
[0034] In addition, when the signal line 60 does not extend out, a signal line insulating cap 64 can be sleeved on the end of the terminal block 6 away from the wire jack 61, so that the signal line 60 is insulated from the outside. The signal line insulating cap 64 is in an inverted L shape.
[0035] In addition, in this embodiment, the end of the signal line 60 away from the wire jack 61 is in a curved shape.
[0036] In actual use, by setting the integrated terminal 6 and providing a wire jack 61 at the bottom of the terminal 6, when the terminal 6 is needed, the second connection protrusion 4 on the signal connection wire 3 can be inserted into the wire jack 61, and when the terminal 6 is not needed, the terminal 6 can be removed, achieving convenient application; moreover, by setting the signal wire insulating cap 64, the signal wire 60 can be prevented from being exposed outside; finally, by setting the curved signal wire 60, the signal wire 60 can be electrically connected by means of hanging connection, plugging connection and terminal screw fixing, and the wiring method is flexible and variable.
[0037] Embodiment 2
[0038] This embodiment provides a signal testing device, which includes two above-mentioned signal testing wires, and also includes a Figure 3 resistance box 7 as shown. There are four adjusting branches on the resistance box 7, and the electrical structures of the four adjusting branches in the resistance box 7 are as Figure 4 shown. Each adjusting branch includes a first wiring hole 70, a variable resistor 71, an ammeter 72 and a second wiring hole 73. The first wiring hole 70 is electrically connected to the variable resistor 71, the ammeter 72 and the second wiring hole 73 in sequence through wires. The first connection protrusions 4 of the two signal testing wires 3 are respectively inserted into the first wiring hole 70 and the second wiring hole 74.
[0039] In actual use, by inserting the first connection protrusion 4 into the first wiring hole 70, the electrical connection between the wire and the variable resistor 71 of the resistance box 7 is realized, and the measurement result can be displayed through the ammeter 72.
[0040] In actual use, the number of adjusting branches on the resistance box 7 is not necessarily limited to four, and the number of adjusting branches can be set according to actual needs.
[0041] In addition, in this embodiment, the first wiring hole 70 is arranged on the left side surface of the resistance box 7, and the second wiring hole 73 is arranged on the right side surface of the resistance box 7. In a certain implementation manner, the first wiring hole 70 and the second wiring hole 73 can be arranged on the same side surface of the resistance box 7 according to actual needs, or can be respectively arranged on adjacent side surfaces.
[0042] In addition, in this embodiment, in order to facilitate the taking and holding of the resistance box 7, a handle 74 is provided on the top surface of the resistance box 7.
[0043] In this embodiment, as Figure 5 shown, the present utility model further includes a test and detection instrument 8. One signal connection wire 3 of the two signal testing wires is used to connect the measurement point, and the other signal connection wire 3 of the two signal testing wires is used to connect the test and detection instrument 8. The second connection protrusions 4 of the two signal testing wires are plugged into the first wiring hole 70 and the second wiring hole 73.
[0044] In actual use, the two signal test leads can be set with different colors for distinction. For example, the colors of the two signal test leads can be set to red and blue respectively to distinguish the positive and negative poles.
[0045] Exemplarily, taking the application of this test device to the primary frequency regulation performance test of a normally produced generator set as an example, the input board card channel of the primary frequency regulation performance test instrument, the portable data recorder analyzer, is a DC voltage signal with a range of 1 - 5VDC, while the on-site measurement point signal is a 4 - 20mA signal and cannot be directly used;
[0046] At this time, the test device provided in this embodiment can be used for the test. Specifically, first adjust the resistance of the adjustable resistor 71 to 250Ω. According to the calculation formula: U = I * R, the voltage range: 1 - 5VDC can be calculated based on I: 4 - 20mA and R: 250Ω.
[0047] Based on the inspiration of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A signal test wire, characterized in that, It includes a body. One side of the body is provided with a first linking projection for insertion. The other side of the body is provided with at least two signal connecting wires. The inner ends of all the signal connecting wires are electrically connected to each other. The outer end of each signal connecting wire is provided with a second linking projection for insertion. The signal input from one side of the body is transmitted along the body to each signal connecting wire.
2. The signal test lead according to claim 1, wherein, An insulating cap is also sleeved on one side of the body, and the insulating cap covers the first linking projection.
3. A signal test wire according to claim 1 or 2, characterized in that It further includes a terminal block. A signal wire is arranged inside the terminal block. A wire jack is provided at the bottom of the terminal block. The second linking projection on at least one signal connecting wire is inserted into the wire jack and is electrically connected to the signal wire.
4. A signal test wire according to claim 3, characterized in that, A telescopic housing is provided on the terminal block. When the housing retracts, the end of the signal wire away from the wire jack extends out.
5. A signal test wire according to claim 4, characterized in that, The housing is provided with a telescopic adjustment part along the end close to the wire jack, and the width of the telescopic adjustment part is greater than the width of the housing.
6. The signal test wire according to claim 5, characterized in that, The end of the signal wire away from the wire jack is in a curved shape.
7. A signal test wire according to claim 6, characterized in that, A signal wire insulating cap is sleeved on the end of the terminal block away from the wire jack.
8. A signal testing device, characterized in that, It includes two signal test wires as described in claims 1, 3, 4, 5 or 6, and also includes a resistance box. The resistance box is provided with at least one adjustment branch. Each adjustment branch includes a first wiring hole, a variable resistor, an ammeter and a second wiring hole. The first wiring hole is electrically connected to the variable resistor, the ammeter and the second wiring hole in sequence through a wire. The first linking projections of the two signal test wires are respectively inserted into the first wiring hole and the second wiring hole.
9. A signal testing device according to claim 8, wherein, One signal connecting wire of the two signal test wires is used to connect to the measuring point, and the other signal connecting wire of the two signal test wires is used to connect to the test detection instrument.