Common mode inductor isolation type data transmission wire harness for security and protection monitoring

Abstract

The utility model discloses a common mode inductance isolation type data transmission wire harness for security and protection monitoring, comprising a data line main body, one end of the data line main body is provided with a terminal stud, a connecting plug is inserted in the terminal stud, and a rubber ring is arranged between the terminal stud and the connecting plug. Two pressing assemblies are installed between the terminal stud and the connecting plug, the two pressing assemblies are located at the top and the bottom respectively, each pressing assembly comprises a limiting strip arranged on the outer wall of the top of the connecting plug, the limiting strips are parallel to the connecting plug, the limiting strips are slidably sleeved with a movable base, and the movable base is arranged on the outer wall of the top of the connecting plug. According to the utility model, the pressing assembly is arranged, so that the sealing ring between the terminal stud and the connecting plug is pressed uniformly enough, the connection is tight enough, the airtightness between the terminal stud and the connecting plug is ensured, and the terminal stud and the connecting plug cannot be separated randomly due to external force.

Description

Technical Field

[0001] This utility model relates to the field of transmission line technology, specifically a common-mode inductor-isolated data transmission harness for security monitoring. Background Technology

[0002] A common-mode inductor, also known as a common-mode choke, is a magnetic component used to suppress common-mode electromagnetic interference. In security monitoring systems, data transmission harnesses are susceptible to interference from external electromagnetic fields, and this interference often exists in the form of common-mode interference.

[0003] A search revealed a utility model patent with Chinese patent publication number CN220492302U, which discloses a data transmission structure for security monitoring, belonging to the field of security monitoring data transmission technology. The structure includes a monitoring camera, with a connecting cable pre-installed at the bottom of the camera. One end of the connecting cable is provided with a connecting end, and a connecting plug is provided on one side of the connecting end. A transmission cable extends from the connecting plug, and a sealing ring is fitted on the connecting plug.

[0004] The aforementioned device improves the waterproofing of data cables by setting water-stop strips. However, while the expansion water-stop strips can shrink to some extent after absorbing water and drying, they usually cannot fully return to their original shape and size, which makes the removal process difficult and leaves room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a common-mode inductor-isolated data transmission harness for security monitoring, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a common-mode inductive isolated data transmission harness for security monitoring, comprising a data cable body, one end of which is provided with a terminal, a connector plug is inserted into the terminal, and a rubber ring is provided between the terminal and the connector plug. Two clamping components are installed between the terminal and the connector plug, respectively located at the top and bottom positions. Each clamping component includes a limiting strip provided on the top outer wall of the connector plug, and the limiting strip is parallel to the connector plug. A movable seat is slidably sleeved on the outside of the limiting strip, and an L-shaped connecting rod is fixedly connected to the outer wall of the movable seat near the terminal.

[0007] As a further preferred embodiment of this technical solution, a guide plate is provided on the top outer wall of the terminal block. The guide plate is generally arranged in a right-angled trapezoidal shape, and the vertical part of the connecting rod is close to the inclined side of the guide plate.

[0008] This ensures that the sealing ring between the terminal and the connector is subjected to sufficiently uniform pressure and a tight enough connection, which helps to guarantee the airtightness between the two and prevents them from detaching due to external forces. When the upper and lower movable seats are pulled to one side at the same time, the movable seats slide along the limiting strip, and the connecting rod on the side of the movable seats will also be driven to move synchronously. If the connection between the terminal and the connector is not tight enough, the vertical part of the connecting rod will contact the inclined side of the guide plate. As the connecting rod moves along the inclined side of the guide plate, the movable seat is driven by the connecting rod to move closer to the terminal. The pulling force will also be applied to the connector through the limiting strip. Under the action of the limiting strip, the pulling force distribution can be ensured to be sufficiently uniform, thereby ensuring that the sealing ring is subjected to sufficiently uniform pressure.

[0009] As a further preferred embodiment of this technical solution, a housing is fixedly fitted onto the outside of the data cable body, and a common mode choke is installed inside the housing, with the common mode choke connected in series with the data cable body.

[0010] As a further preferred embodiment of this technical solution, two reinforcing components are installed inside the housing, and the two reinforcing components are respectively located outside the two connection ends of the data cable body.

[0011] As a further preferred embodiment of this technical solution, the reinforcement component includes a pillow plate fixedly connected to the inner wall of the bottom of the data cable body, two vertically arranged limiting rods are provided at one end of the outer wall of the top of the pillow plate, a pressure plate is slidably inserted between the two limiting rods, and a screw is rotatably connected to the outer wall of the top of the pillow plate, with the pressure plate threaded onto the outside of the screw.

[0012] The screw is driven to rotate by the knob, and the pressure plate, which is restricted by the limit rod, cannot rotate. The screw will then drive the pressure plate to move downward. Subsequently, with the cooperation of the pillow plate, the connection end of the data cable body can be firmly fixed, effectively avoiding the problem of disconnection due to external force and ensuring the stability of the structure.

[0013] As a further preferred embodiment of this technical solution, the sides of the pillow plate and the pressure plate that are close to each other are provided with arc-shaped grooves that are adapted to the main body of the data cable.

[0014] As a further preferred embodiment of this technical solution, the common mode choke includes a base installed inside the housing, a magnetic ring inside the base, and two wires with opposite directions of rotation wound around the outside of the magnetic ring. The data cable body is electrically connected to these two wires.

[0015] This utility model provides a common-mode inductor-isolated data transmission harness for security monitoring, which has the following advantages:

[0016] (1) By setting a clamping component, this utility model ensures that the sealing ring between the terminal and the connector is compressed evenly and the connection is tight enough, which helps to ensure the airtightness between the two and prevents them from separating due to external force. When the upper and lower moving seats are pulled to one side at the same time, the moving seats slide along the limiting strip, and the connecting rod on the side of the moving seats will also be driven to move synchronously. If the connection between the terminal and the connector is not tight enough, the vertical part of the connecting rod will contact the inclined side of the guide plate. As the connecting rod moves along the inclined side of the guide plate, the moving seat is driven by the connecting rod to move closer to the terminal. The pulling force will also be applied to the connector through the limiting strip. Under the action of the limiting strip, the pulling force distribution can be ensured to be evenly distributed, thereby making the sealing ring compressed evenly.

[0017] (2) By setting up a reinforcing component, the screw is driven to rotate by the knob. The pressure plate restricted by the limit rod cannot rotate, and the screw will drive the pressure plate to move downward. Then, with the cooperation of the pillow plate, the connection end of the data cable body can be tightly fixed, effectively avoiding the problem of disconnection due to external force at the connection end, and ensuring the stability of the structure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B;

[0022] In the diagram: 1. Data cable body; 2. Terminal; 3. Housing; 4. Connecting plug; 5. Clamping assembly; 6. Reinforcing assembly; 7. Common mode choke; 501. Limiting strip; 502. Moving base; 503. Guide plate; 504. Connecting rod; 601. Pillow plate; 602. Limiting rod; 603. Screw; 604. Pressure plate. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 2 and Figure 3As shown in this embodiment, a common-mode inductor-isolated data transmission harness for security monitoring includes a data cable body 1. One end of the data cable body 1 is provided with a terminal 2. A connector 4 is inserted into the terminal 2, and a rubber ring is provided between the terminal 2 and the connector 4. Two clamping components 5 are installed between the terminal 2 and the connector 4. The two clamping components 5 are located at the top and bottom positions, respectively. The clamping component 5 includes a limiting strip 501 provided on the top outer wall of the connector 4, and the limiting strip 501 is parallel to the connector 4. A movable seat 502 is slidably sleeved on the outside of the limiting strip 501. An L-shaped connecting rod 504 is fixedly connected to the outer wall of the movable seat 502 near the terminal 2.

[0025] A guide plate 503 is provided on the top outer wall of the terminal 2. The guide plate 503 is arranged in a right trapezoidal shape, and the vertical part of the connecting rod 504 is close to the inclined side of the guide plate 503.

[0026] Pull both upper and lower movable seats 502 to one side simultaneously. The movable seats 502 slide along the limiting strip 501. The connecting rod 504 on the side of the movable seat 502 will also be driven to move synchronously. If the connection between the terminal 2 and the connector 4 is not tight enough, the vertical part of the connecting rod 504 will contact the inclined side of the guide plate 503. As the connecting rod 504 moves along the inclined side of the guide plate 503, the movable seat 502 is driven by the connecting rod 504 to move closer to the terminal 2. The pulling force will also be applied to the connector 4 through the limiting strip 501. Under the action of the limiting strip 501, the pulling force distribution can be ensured to be sufficiently uniform, thereby making the sealing ring press sufficiently uniform.

[0027] like Figure 1 , Figure 2 and Figure 4 As shown, a housing 3 is fixedly fitted on the outside of the main body 1 of the data cable, and a common mode choke 7 is installed inside the housing 3. The common mode choke 7 is connected in series with the main body 1 of the data cable.

[0028] Two reinforcing components 6 are installed inside the housing 3, and the two reinforcing components 6 are located outside the two connection ends of the data cable body 1 respectively.

[0029] The common mode choke 7 includes a base installed inside the housing 3. A magnetic ring is provided inside the base, and two wires with opposite directions of rotation are wound around the outside of the magnetic ring. The data cable body 1 is electrically connected to these two wires.

[0030] The common-mode choke 7 connected in series in the middle of the main body 1 of the data line can reduce the differential-mode input inductance and reduce the coupling current on the line during data transmission, thereby reducing the input noise at the receiving end and suppressing the electromagnetic interference emitted by the line.

[0031] like Figure 4As shown, the reinforcement component 6 includes a pillow plate 601 fixedly connected to the bottom inner wall of the data cable body 1. Two vertically arranged limiting rods 602 are provided at one end of the top outer wall of the pillow plate 601. The same pressure plate 604 is slidably inserted between the two limiting rods 602. A screw 603 is rotatably connected to the top outer wall of the pillow plate 601. The pressure plate 604 is threaded onto the outside of the screw 603.

[0032] After the data cable body 1 and the common mode choke 7 are connected, the screw 603 is rotated by the knob. The pressure plate 604, which is restricted by the limit rod 602, cannot rotate. The screw 603 will drive the pressure plate 604 to move downward. Then, with the cooperation of the pillow plate 601, the connection end of the data cable body 1 can be tightly fixed, effectively avoiding the problem of disconnection due to external force at the connection end, and ensuring the stability of the structure.

[0033] like Figure 4 As shown, the pillow plate 601 and the pressure plate 604 are both provided with arc-shaped grooves that are adapted to the data cable body 1 on their adjacent sides, which helps to increase the contact area between the two and the data cable body 1, thereby making the data cable body 1 more stable when it is fixed.

[0034] This utility model provides a common-mode inductor-isolated data transmission harness for security monitoring, and its specific working principle is as follows:

[0035] When the device is in operation, the connector 4 is inserted into the terminal 2. The connecting rod 504 will also move to one side of the guide plate 503. Then, the upper and lower movable seats 502 are pulled to one side simultaneously. The movable seats 502 slide along the limiting strip 501, and the connecting rod 504 on the side of the movable seat 502 will also be driven to move synchronously. If the connection between the terminal 2 and the connector 4 is not tight enough, the vertical part of the connecting rod 504 will contact the inclined side of the guide plate 503. As the connecting rod 504 moves along the inclined side of the guide plate 503, the movable seat 502 is driven by the connecting rod 504 to move closer to the terminal 2. The pulling force will also be applied to the connector 4 through the limiting strip 501. Under the action of the limiting strip 501, To ensure a sufficiently uniform distribution of tension, the sealing ring is subjected to sufficiently uniform pressure. The common-mode choke 7, connected in series in the middle of the data cable body 1, reduces the differential-mode input inductance and coupling current in the line during data transmission, thereby reducing the input noise at the receiving end and suppressing electromagnetic interference emitted outwards. After the data cable body 1 and the common-mode choke 7 are connected, the screw 603 is rotated by the knob. The pressure plate 604, which is restricted by the limit rod 602, cannot rotate. The screw 603 then drives the pressure plate 604 to move downwards. Subsequently, with the cooperation of the pillow plate 601, the connection end of the data cable body 1 can be tightly fixed, effectively preventing the connection end from breaking due to external force and ensuring the stability of the structure.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A common-mode inductance isolated data transmission harness for security monitoring, comprising a data line main body (1), characterized in that: The main body (1) of the data cable is provided with a terminal (2) at one end. A connector (4) is inserted into the terminal (2). A rubber ring is provided between the terminal (2) and the connector (4). Two clamping components (5) are installed between the terminal (2) and the connector (4). The two clamping components (5) are located at the top and bottom respectively. The clamping component (5) includes a limiting strip (501) provided on the top outer wall of the connector (4). The limiting strip (501) is parallel to the connector (4). A movable seat (502) is slidably sleeved on the outside of the limiting strip (501). An L-shaped connecting rod (504) is fixedly connected to the outer wall of the movable seat (502) near the terminal (2).

2. The common-mode inductive isolated data transmission harness for security monitoring according to claim 1, characterized in that: The top outer wall of the terminal block (2) is provided with a guide plate (503). The guide plate (503) is generally arranged in a right-angled trapezoidal shape, and the vertical part of the connecting rod (504) is close to the inclined side of the guide plate (503).

3. The common mode choke isolated data transmission wiring harness for security monitoring of claim 1, wherein: The data cable body (1) is fixedly fitted with a housing (3), and a common mode choke (7) is installed inside the housing (3). The common mode choke (7) is connected in series with the data cable body (1).

4. The common mode choke isolated data transmission wiring harness for security monitoring of claim 3, wherein: The housing (3) has two reinforcement components (6) installed inside, and the two reinforcement components (6) are located outside the two connection ends of the data cable body (1).

5. The common mode choke isolated data transmission wiring harness for security monitoring of claim 4, wherein: The reinforcement component (6) includes a pillow plate (601) fixedly connected to the bottom inner wall of the data cable body (1). Two vertically arranged limiting rods (602) are provided at one end of the top outer wall of the pillow plate (601). The same pressure plate (604) is slidably inserted between the two limiting rods (602). A screw (603) is rotatably connected to the top outer wall of the pillow plate (601). The pressure plate (604) is threaded onto the outside of the screw (603).

6. The common mode choke isolated data transmission wiring harness for security monitoring of claim 5, wherein: The pillow plate (601) and the pressure plate (604) are both provided with arc-shaped grooves that are adapted to the data cable body (1) on their sides that are close to each other.

7. The common mode choke isolation data transmission wiring harness for security monitoring of claim 3, wherein: The common mode choke (7) includes a base installed inside the housing (3), a magnetic ring is provided inside the base, and two wires with opposite directions of rotation are wound around the outside of the magnetic ring. The data cable body (1) is electrically connected to these two wires.

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