Ssi signal isolation transmission device with fault display function

Abstract

The utility model relates to the SSI signal isolation transmission device with fault display function applied to pulse technical field, through being equipped with the display screen connected with information processing module, is used for showing the on -off state of each access signal, is convenient for discovering signal fault source in time, and then improves the repair and maintenance efficiency, simultaneously, through being equipped with the buffer assembly of cable fixed cover joint and the bending part of cable self bending, when cable is pulled, the sliding cylinder compression coil spring of buffer assembly carries out horizontal sliding, and then makes the bending part of cable be stretched, reduces the probability that cable is damaged and is separated from wiring terminal when being pulled, besides, through setting up the annular air bag on sliding cylinder and the whistle of annular air bag intercommunication, when cable is pulled, sends the whistle sound, reminds the operator to pay attention, reduces the false touch, and still can be used for quick positioning wiring terminal corresponding cable, improves the security and accuracy of wiring operation.

Description

Technical Field

[0001] This utility model relates to a signal transmission device, and more particularly to an SSI signal isolation transmission device with fault display function applied in the field of pulse technology. Background Technology

[0002] SSI signal isolation transmission devices are industrial signal processing equipment based on three-terminal isolation technology (input / output / power supply). They achieve electrical isolation through optocouplers, magnetic couplers, or capacitors, and support long-distance, high-precision transmission of SSI protocol digital signals. They are widely used in industrial automation, energy machinery, and outdoor monitoring. However, existing devices face challenges when installed in signal cabinets: the equipment and cables inside the cabinet are densely packed, and the cables are easily pulled or accidentally touched during traction. Traditional rigid wiring methods (such as screw-fixed terminals) are prone to loosening or even detachment under overload tension, leading to signal interruption or equipment failure.

[0003] The existing patent with publication number CN210867641U discloses a signal isolator. The core fixing structure consists of an isolator body, front and rear baffles, fixing blocks, a rotating mechanism, and a slider assembly. Specifically, the baffles on the front and rear sides of the isolator body are fixed by screws, and fixing blocks (with embedded bearings) are set on the outer side of the baffles. The rotating mechanism (including a rotating sleeve, a first threaded post, and a second threaded post) is connected to the fixing blocks through bearings. The slider slides with the baffles, and its inner wall is threadedly connected to the rotating mechanism. This design allows the signal isolator to flexibly adapt to mounting rails of different widths and achieve stable locking through mechanical transmission, solving the problem of poor adaptability of traditional fixing methods.

[0004] A patent with publication number CN209218061U discloses a signal isolator that adopts a dual fixing design of guide rail snap-fit ​​and elastic buckle, combined with locking pins to enhance wiring stability and achieve quick tool-free installation. It has built-in low-noise analog circuit and temperature compensation technology to ensure signal accuracy (linearity ≤0.1% FS) and low temperature drift (≤50ppm / ℃), and optimizes thermal management with heat dissipation hole array. The modular structure supports standardized guide rail adaptation and mass production, and has advantages in anti-interference, high reliability and cost, making it suitable for industrial automation and other scenarios.

[0005] The aforementioned prior art discloses a technical solution for installing isolators and guide rails, but it does not solve the problem that the access cable of the signal isolation transmission device is easily accidentally touched or pulled and detached from the terminal block. Utility Model Content

[0006] The technical problem to be solved by this utility model in view of the above-mentioned prior art is that the access cable of the signal isolation transmission device is easily detached from the terminal block by accidental contact or pulling.

[0007] To address the aforementioned issues, this utility model provides an SSI signal isolation transmission device with fault display function, comprising a housing, a display screen fixedly connected to the front end of the housing, wiring terminals fixedly connected to the upper and lower side walls of the housing on the display screen, cables fixedly connected to the wiring terminals, and a buffer assembly fixedly sleeved on the cables; the buffer assembly includes an end plate fixedly connected to the housing, a sliding cylinder slidably passing through the end plate, a rubber sleeve snapped into the sliding cylinder, the rubber sleeve fixedly sleeved on the outside of the cables, the cables forming a bend between the wiring terminals and the buffer assembly, and a helical spring sleeved on the sliding cylinder, the left end of the helical spring abutting against the left end of the sliding cylinder, and the right end of the helical spring abutting against the side wall of the end plate.

[0008] In the aforementioned SSI signal isolation transmission device with fault display function, a buffer assembly including a sliding cylinder and a helical spring is used to cause the cable to be stretched horizontally after being pulled, thereby reducing damage to the cable or terminal block.

[0009] As a further improvement of this application, an annular airbag is provided on the outside of the helical spring. The left end of the annular airbag is fixedly connected to the left side wall of the sliding cylinder, and the right end of the annular airbag is fixedly connected to the side wall of the end plate. A whistle is fixedly connected to the side of the annular airbag facing the end plate, and the whistle extends to the outside of the end plate.

[0010] As a further improvement of this application, the end plate is a rectangular plate and is integrally formed with the shell. A sliding hole is provided on the end plate for the sliding cylinder to slide, and the outer wall of the sliding cylinder slides against the inner wall of the sliding hole.

[0011] As a further improvement of this application, the sliding cylinder includes a central cylinder that passes through the sliding hole, a right end cylinder that is threadedly connected to the right side opening of the central cylinder, and a raised ring provided at the left end of the central cylinder and the right end of the right end cylinder. A helical spring is sleeved on the central cylinder, and the left end of the helical spring abuts against the side wall of the raised ring at the left end of the central cylinder. The diameter of the raised rings of the central cylinder and the right end cylinder is larger than the diameter of the sliding hole.

[0012] As a further improvement of this application, a threaded groove is provided on the inner side of the opening at the right end of the central cylinder, and an external thread is provided on the outer circumferential wall of the right end cylinder.

[0013] As a further improvement of this application, the right end cylinder is provided with a through-hole, which includes a wide hole for accommodating the rubber sleeve and a narrow hole for the cable to pass through.

[0014] As a further improvement of this application, the rubber sleeve is nested inside the central cylinder and extends into the reducing hole. The rubber sleeve has a through hole for the cable to pass through, and the inner diameter of the through hole is smaller than the diameter of the cable.

[0015] As a further improvement of this application, the rubber sleeve includes an integrally formed cylindrical portion and a conical portion, the cylindrical portion being nested in a wide hole, the conical portion being nested in a central cylinder, and the conical portion abutting against a left end cylinder that is threadedly connected to the central cylinder.

[0016] As a further improvement of this application, the left end cylinder has a tapered hole that penetrates itself, the inner wall of the tapered hole abuts against the conical part of the rubber sleeve, the outer wall of the left end cylinder has an external thread II, and the inner wall of the central cylinder has a threaded groove II that mates with the external thread II.

[0017] As a further improvement of this application, the whistle is a long tubular sailor's whistle, with its air outlet located on the part of the whistle extending to the outside of the endplate, and its air inlet facing the communication port with the annular airbag.

[0018] In summary, this utility model features a display screen connected to an information processing module to show the conduction status of each access signal, facilitating timely detection of signal fault sources and improving inspection and maintenance efficiency. Simultaneously, the buffer assembly, which is fixedly connected to the cable, and the curved portion formed by the cable's own bending, allow the buffer assembly's sliding cylinder to compress the helical spring and slide horizontally when the cable is pulled. This stretches the curved portion of the cable, protecting the cable and terminals and reducing the probability of cable damage or detachment from the terminals during pulling. Furthermore, the annular airbag on the sliding cylinder and a whistle connected to it emit a whistle when the cable is pulled, alerting operators and reducing accidental contact. This whistle can also be used to quickly locate the cable corresponding to the terminal, improving the safety and accuracy of wiring operations. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present application; Figure 2 This is a schematic diagram of the transverse cross-sectional structure of this application; Figure 3 for Figure 2 Enlarged structural diagram at point A; Figure 4 This is a three-dimensional structural diagram of the buffer component in this application; Figure 5 This is a schematic diagram of the exploded structure of the buffer assembly in this application; Figure 6 This is an exploded cross-sectional view of the sliding cylinder in this application; Figure 7 This is a schematic diagram of the motion state of the sliding cylinder after the cable is pulled in this application; Figure 8 This is a schematic diagram of the motion structure of the annular airbag after the cable is pulled in this application.

[0020] Explanation of the labels in the diagram: 1. Housing; 2. Display screen; 3. Terminal block; 4. Cable; 5. End plate; 501. Sliding hole; 6. Sliding cylinder; 601. Center cylinder; 6011. Threaded groove one; 6012. Threaded groove two; 602. Right end cylinder; 6021. Variable diameter hole; 60211. Wide hole; 60212. Narrow hole; 6022. External thread one; 603. Left end cylinder; 6031. Tapered hole; 6032. External thread two; 7. Rubber sleeve; 701. Through hole; 702. Cylindrical part; 703. Conical part; 8. Helical spring; 9. Annular airbag; 10. Whistle. Detailed Implementation

[0021] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0022] Implementation method 1: Figures 1-7 An SSI signal isolation transmission device with fault display function is shown, including a housing 1, a display screen 2 fixedly connected to the front end of the housing 1, wiring terminals 3 fixedly connected to the upper and lower side walls of the housing 1 on the display screen 2, a cable 4 fixedly connected to the wiring terminals 3, and a buffer component fixedly sleeved on the cable 4. Please see Figure 3 , Figure 4 and Figure 5 The buffer assembly includes an end plate 5 fixedly connected to the housing 1. A sliding cylinder 6 is slidably passed through the end plate 5. A rubber sleeve 7 is snapped into the sliding cylinder 6. The rubber sleeve 7 is fixedly sleeved on the outside of the cable 4. The cable 4 has a bend between the terminal 3 and the buffer assembly. A helical spring 8 is sleeved on the sliding cylinder 6. The left end of the helical spring 8 abuts against the left end of the sliding cylinder 6, and the right end of the helical spring 8 abuts against the side wall of the end plate 5.

[0023] For details, please refer to Figure 7 When cable 4 is pulled, cable 4 drives sliding cylinder 6 to slide laterally through rubber sleeve 7, and helical spring 8 is compressed, which stretches the bent part of cable 4 located between terminal 3 and buffer assembly, buffering the pulling force on cable 4, reducing the force at the connection between cable 4 and terminal 3, thereby reducing the probability of cable 4 being pulled off terminal 3 and improving the stability of the connection between cable 4 and terminal 3; at the same time, when the pulling force on cable 4 disappears, under the elastic force of helical spring 8, sliding cylinder 6 returns to the initial position, and the bent part of cable 4 returns to the initial state, realizing the automatic restoration of helical spring 8 and the bent part of cable 4; It should be noted that an information processing module is fixedly connected inside the housing 1. The information processing module is electrically connected to the display screen 2. The display screen 2 displays the conduction status of each access cable 4 based on the cable connection information of the information processing module. When the information of a certain sensor or controller is successfully connected, the display screen 2 displays the status of the access information as "conducting". When the information of a certain sensor or controller is disconnected, the display screen 2 displays the status of the access information as "disconnected". For a specific example, the communication status and signal status of C+, C-, D+, and D- collected by the information processing module are displayed in real time on the display screen 2 in the form of OK / NO characters. When a fault occurs, the data status will flash frequently between OK and NO. For example, when there is a problem with the connection between the sensor's data lines D+ and D- and the isolation device, the Din and Dout status on the display screen will flash frequently between OK and NO. In this way, we can directly solve the fault and improve the efficiency of fault detection and repair. In addition, the information processing module generally includes a clock synchronization circuit, a data buffer, and an encoder converter, which are existing technologies and will not be described in detail in this application.

[0024] Compared to traditional signal isolation transmission devices, this invention features a display screen 2 connected to an information processing module to show the conduction status of each access signal, facilitating timely detection of signal fault sources and improving inspection and maintenance efficiency. Simultaneously, by incorporating a buffer assembly fixedly connected to the cable 4 and a bend formed by the cable 4 itself, when the cable 4 is pulled, the sliding cylinder 6 of the buffer assembly slides horizontally via a compression helical spring 8, stretching the bend of the cable 4 and protecting both the cable 4 and the terminal block 3. This reduces the probability of damage to the cable 4 during pulling and the cable 4 becoming detached from the terminal block 3. Furthermore, after the pulling force on the cable 4 disappears, the helical spring 8 returns the sliding cylinder 6 and the bend of the cable 4 to their initial state, preparing for the next pull buffering operation.

[0025] Please see Figure 5 The end plate 5 is a rectangular plate and is integrally formed with the shell 1. The end plate 5 has a sliding hole 501 for the sliding cylinder 6 to slide. The outer wall of the sliding cylinder 6 slides against the inner wall of the sliding hole 501.

[0026] Specifically, the sliding cylinder 6 slides horizontally along the axial direction of the sliding hole 501.

[0027] Please see Figure 3 and Figure 5The sliding cylinder 6 includes a central cylinder 601 that passes through the sliding hole 501. A right end cylinder 602 is threadedly connected to the right opening of the central cylinder 601. Both the left end of the central cylinder 601 and the right end of the right end cylinder 602 are provided with protruding rings. A helical spring 8 is sleeved on the central cylinder 601, and the left end of the helical spring 8 abuts against the side wall of the protruding ring at the left end of the central cylinder 601. The diameters of the protruding rings of the central cylinder 601 and the right end cylinder 602 are both larger than the diameter of the sliding hole 501.

[0028] Specifically, the sliding cylinder 6 is limited by the protruding rings set at the left end of the central cylinder 601 and the right end cylinder 602, so that the sliding cylinder 6 cannot detach from the end plate 5.

[0029] Please see Figure 6 The inner side of the opening at the right end of the central cylinder 601 is provided with a threaded groove 6011, and the outer circumferential wall of the right end cylinder 602 is provided with an external thread 6022.

[0030] Specifically, the sliding cylinder 6 can be disassembled by screwing the right end cylinder 602, which facilitates the installation and disassembly of the sliding cylinder 6 and the end plate 5.

[0031] Please see Figure 3 and Figure 6 The right end cylinder 602 has a through-hole 6021, which includes a wide hole 60211 for accommodating the rubber sleeve 7 and a narrow hole 60212 for the cable 4 to pass through.

[0032] Specifically, the rubber sleeve 7 is limited by the variable diameter hole 6021.

[0033] Please see Figure 3 and Figure 6 The rubber sleeve 7 is nested inside the central cylinder 601 and extends into the variable diameter hole 6021. The rubber sleeve 7 has a through hole 701 for the cable 4 to pass through. The inner diameter of the through hole 701 is smaller than the diameter of the cable 4.

[0034] Specifically, during installation, the cable 4 passes through the through hole 701, causing the through hole 701 to be deformed by the cable 4, thereby making the cable 4 and the rubber sleeve 7 interference fit.

[0035] Please see Figure 3 and Figure 6 The rubber sleeve 7 includes an integrally formed cylindrical part 702 and a conical part 703. The cylindrical part 702 is nested in the wide hole 60211, and the conical part 703 is nested in the central cylinder 601. The conical part 703 abuts against the left end cylinder 603 which is threadedly connected to the central cylinder 601.

[0036] Specifically, by twisting the left end cylinder 603, the left end cylinder 603 and the conical part 703 of the rubber sleeve 7 are squeezed together, which makes the rubber sleeve 7 exert greater squeezing force on the cable 4, improves the stability of the fixed connection between the cable 4 and the rubber sleeve 7, reduces the probability of relative slippage between the cable 4 and the rubber sleeve 7, and improves the traction effect of the cable 4 on the sliding cylinder 6.

[0037] Please see Figure 3 and Figure 6 The left end cylinder 603 has a tapered hole 6031 that penetrates itself. The inner wall of the tapered hole 6031 abuts against the conical part 703 of the rubber sleeve 7. The outer wall of the left end cylinder 603 has an external thread 6032. The center cylinder 601 has a threaded groove 6012 that mates with the external thread 6032.

[0038] Specifically, by twisting the left end cylinder 603, the connection between the left end cylinder 603 and the central cylinder 601 is achieved, as well as the compression of the rubber sleeve 7 is achieved.

[0039] The second implementation method: Figure 3 , Figure 5 and Figure 8 The SSI signal isolation transmission device with fault display function is shown. Based on the first embodiment, an annular airbag 9 is provided on the outside of the helical spring 8. The left end of the annular airbag 9 is fixedly connected to the left side wall of the sliding cylinder 6, and the right end of the annular airbag 9 is fixedly connected to the side wall of the end plate 5. A whistle 10 is fixedly connected to the side of the annular airbag 9 facing the end plate 5, and the whistle 10 extends to the outside of the end plate 5.

[0040] Specifically, when cable 4 is pulled, the sliding cylinder 6 compresses the spiral spring 8 and the annular airbag 9 simultaneously. The airflow in the annular airbag 9 is squeezed into the whistle 10, which emits a whistling sound to remind the operator that the cable 4 corresponding to the whistle 10 is being pulled. When personnel accidentally touch cable 4 during equipment installation, causing cable 4 to be pulled, the whistling sound of the whistle 10 reminds the operator to pay attention in time to avoid further damage to cable 4 and terminal 3. When the operator cannot quickly identify the cable 4 corresponding to terminal 3 by visual means alone (the end of cable 4 away from terminal 3 is blocked or there are many cables 4 and they are tangled), they can use a slight pull and the whistle sound to locate the cable 4 corresponding to terminal 3, thus improving the cable 4 positioning efficiency.

[0041] Please see Figure 3 The whistle 10 is a long tubular sailor's whistle, and its air outlet is located on the part of the whistle 10 extending to the outside of the end plate 5, and its air inlet faces the communication port with the annular airbag 9.

[0042] Specifically, the long tubular sailor's whistle has a distinct whistle sound and is effective in alerting the listener.

[0043] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. An SSI signal isolation transmission device with fault display function, characterized in that, The device includes a housing (1), a display screen (2) is fixedly connected to the front end of the housing (1), and wiring terminals (3) are fixedly connected to the upper and lower side walls of the housing (1) on the display screen (2). A cable (4) is fixedly connected to the wiring terminals (3), and a buffer assembly is fixedly sleeved on the cable (4). The buffer assembly includes an end plate (5) fixedly connected to the housing (1), a sliding cylinder (6) is slidably passed through the end plate (5), a rubber sleeve (7) is snapped into the sliding cylinder (6), and the rubber sleeve (7) is fixedly sleeved on the outside of the cable (4). The cable (4) forms a bend between the wiring terminal (3) and the buffer assembly. A helical spring (8) is sleeved on the sliding cylinder (6). The left end of the helical spring (8) abuts against the left end of the sliding cylinder (6), and the right end of the helical spring (8) abuts against the side wall of the end plate (5).

2. The SSI signal isolation transmission device with fault display function according to claim 1, characterized in that, The outer side of the helical spring (8) is provided with an annular airbag (9). The left end of the annular airbag (9) is fixedly connected to the left side wall of the sliding cylinder (6), and the right end of the annular airbag (9) is fixedly connected to the side wall of the end plate (5). A whistle (10) is fixedly connected to the side of the annular airbag (9) facing the end plate (5), and the whistle (10) extends to the outside of the end plate (5).

3. The SSI signal isolation transmission device with fault display function according to claim 1, characterized in that, The end plate (5) is a rectangular plate and is integrally formed with the shell (1). The end plate (5) has a sliding hole (501) for sliding of the sliding cylinder (6). The outer wall of the sliding cylinder (6) slides against the inner wall of the sliding hole (501).

4. The SSI signal isolation transmission device with fault display function according to claim 3, characterized in that, The sliding cylinder (6) includes a central cylinder (601) that passes through the sliding hole (501). The right side of the central cylinder (601) is threadedly connected to a right end cylinder (602). The left end of the central cylinder (601) and the right end of the right end cylinder (602) are both provided with protruding rings. A helical spring (8) is sleeved on the central cylinder (601), and the left end of the helical spring (8) abuts against the side wall of the protruding ring at the left end of the central cylinder (601). The diameter of the protruding rings of the central cylinder (601) and the right end cylinder (602) is larger than the diameter of the sliding hole (501).

5. The SSI signal isolation transmission device with fault display function according to claim 4, characterized in that, The center cylinder (601) has a threaded groove (6011) on the inner side of the opening at the right end, and an external thread (6022) is provided on the outer circumference of the right end cylinder (602).

6. The SSI signal isolation transmission device with fault display function according to claim 5, characterized in that, The right end cylinder (602) has a through-hole (6021) that extends through itself. The through-hole (6021) includes a wide hole (60211) for accommodating the rubber sleeve (7) and a narrow hole (60212) for the cable (4) to pass through.

7. The SSI signal isolation transmission device with fault display function according to claim 6, characterized in that, The rubber sleeve (7) is nested inside the central cylinder (601) and extends into the variable diameter hole (6021). The rubber sleeve (7) has a through hole (701) for the cable (4) to pass through. The inner diameter of the through hole (701) is smaller than the diameter of the cable (4).

8. The SSI signal isolation transmission device with fault display function according to claim 7, characterized in that, The rubber sleeve (7) includes an integrally formed cylindrical part (702) and a conical part (703). The cylindrical part (702) is nested in a wide hole (60211), and the conical part (703) is nested in a central cylinder (601). The conical part (703) abuts against a left end cylinder (603) that is threadedly connected to the central cylinder (601).

9. The SSI signal isolation transmission device with fault display function according to claim 8, characterized in that, The left end cylinder (603) has a conical hole (6031) that penetrates itself. The inner wall of the conical hole (6031) abuts against the conical part (703) of the rubber sleeve (7). The outer wall of the left end cylinder (603) has an external thread (6032). The center cylinder (601) has a threaded groove (6012) that mates with the external thread (6032).

10. The SSI signal isolation transmission device with fault display function according to claim 2, characterized in that, The whistle (10) is a long tubular sailor's whistle, and its air outlet is located on the part of the whistle (10) extending to the outside of the end plate (5), and its air inlet faces the communication port with the annular airbag (9).

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