Convenient-to-install sensor for collecting current signals of circuit breaker

Abstract

The utility model relates to a convenient-to-install sensor for collecting current signals of a circuit breaker, which comprises a sensor main body, a plurality of wiring grooves are arranged at the top of the sensor main body, and the internal space of each wiring groove is gradually reduced from top to bottom; the contact end is arranged on the inner wall of the wiring groove and is a hollow metal ring; and the plurality of mounting grooves are formed in the top of the sensor main body, the mounting grooves are communicated with the wiring grooves, pressing mechanisms are mounted in the mounting grooves, and the pressing mechanisms enter the wiring grooves through the communication positions of the mounting grooves and the wiring grooves. According to the utility model, through the arrangement of the pressing mechanism, when the sensor is installed, the lead installed on the circuit breaker is directly inserted into the wiring groove, and the lead is pressed through the pressing mechanism, so that one end, far away from the circuit breaker, of the lead is in tight contact with the contact end, and compared with traditional screw pressing, the installation efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of insulation resistance testers, and more specifically, to a sensor for collecting current signals of circuit breakers which is easy to install. Background Art

[0002] Circuit breakers are important electrical devices for the protection and operation of power systems. In power systems, various sensors (such as current sensors, voltage sensors, etc.) are often required to be connected to circuit breakers through wires to collect current signals in the circuit breakers.

[0003] The existing installation method mainly involves installing one end of the wire on the circuit breaker, inserting the other end of the wire into the wiring slot in the sensor, making the end contact with the wiring terminal in the wiring slot, and finally tightening the screws in the wiring slot to fix the end;

[0004] However, due to the small size of the sensor, the screws used are also relatively small, which is not very convenient to screw, resulting in inconvenience in installing the sensor. Therefore, a sensor for collecting circuit breaker current signals that is easy to install is proposed. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a sensor for collecting circuit breaker current signals that is easy to install, including:

[0006] A sensor body, wherein a plurality of wiring slots are arranged on the top of the sensor body, and the internal space of the wiring slots gradually decreases from top to bottom;

[0007] A contact end installed on the inner wall of the wiring slot, wherein the contact end is a hollow metal ring;

[0008] A plurality of mounting grooves are provided on the top of the sensor body, the mounting grooves are connected with the wiring grooves, a clamping mechanism is installed inside the mounting grooves, and the clamping mechanism enters into the wiring grooves through the connection between the mounting grooves and the wiring grooves.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] Preferably, the clamping mechanism includes a movable block, the bottom end of which is rotatably mounted in the mounting groove, a spring is fixedly connected to an outer wall of one side of the movable block, and an end of the spring away from the movable block is fixedly connected to an inner wall of the mounting groove.

[0011] Preferably, a pressure block is fixedly connected to an outer wall of the movable block on a side away from the spring, and an outer wall of the pressure block on a side close to the wiring slot is in an arc shape.

[0012] Preferably, both inner walls of the installation groove are provided with trapezoidal limiting grooves, both outer walls of the movable block are fixedly connected with limiting blocks, and the limiting blocks form a sliding fit with the inner walls of the limiting grooves.

[0013] Preferably, a sealing ring is fixedly connected to the top outer wall of the sensor body, and the sealing ring is arranged on the periphery of the wiring groove.

[0014] Preferably, the sealing ring, limiting block, spring and pressing block are all made of rubber.

[0015] Preferably, a pull ring is installed on the outer wall of one side of the pressing block close to the spring, and the pull ring is arranged above the spring.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. In the utility model, by providing a clamping mechanism, when installing the sensor, the wire installed on the circuit breaker is directly inserted into the wiring slot, and the wire is clamped by the clamping mechanism so that the end of the wire away from the circuit breaker is in tight contact with the contact end. Compared with the traditional screw clamping, the installation efficiency is faster.

[0018] 2. In the utility model, by providing a limit groove and a limit block, when the movable block moves into the wiring groove, the movable block will drive the limit block to move in the limit groove, and the inner wall of the limit groove will squeeze the limit block, thereby limiting the movable block, so that the movable block will not be easily pulled, and the connection between the wire and the contact end has better stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a structural schematic diagram of the sensor body of the utility model;

[0021] Figure 3 This is a schematic diagram of the wiring slot structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the wiring slot of the utility model;

[0023] Figure 5 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0024] 1. Circuit breaker body; 2. Sensor body; 3. Dustproof sheet; 4. Wiring slot; 5. Contact terminal; 6. Pull ring; 7. Mounting slot; 8. Spring; 9. Movable block; 10. Pressure block; 11. Sealing ring; 12. Limiting slot; 13. Limiting block. DETAILED DESCRIPTION

[0025] Reference Figures 1 to 4 , a sensor for collecting current signals of circuit breaker which is easy to install and proposed in the utility model is further explained.

[0026] Embodiment 1

[0027] A sensor for collecting current signals of a circuit breaker which is easy to install comprises:

[0028] The sensor body 2 has a plurality of wiring slots 4 disposed on the top of the sensor body 2, and the internal space of the wiring slots 4 gradually decreases from top to bottom;

[0029] like Figure 3 and Figure 4 As shown, the wiring slot 4 is in a truncated cone shape, which is convenient for inserting the wire connected to the circuit breaker body 1 into the wiring slot 4. At the same time, as the wire goes deeper, the end of the wire away from the circuit breaker body 1 will become tighter and tighter in the wiring slot 4.

[0030] The contact terminal 5 is installed on the inner wall of the wiring slot 4. The contact terminal 5 is a hollow metal ring (the material of which can be a conductive metal such as aluminum alloy or copper). The shape of the outer wall of the contact terminal 5 is consistent with the inner wall of the wiring slot 4, so that one end of the wire is in contact with the inner wall of the contact terminal 5.

[0031] like Figure 2 As shown, the top outer wall of the sensor body 2 is provided with a plurality of mounting grooves 7, and a clamping mechanism is provided inside the mounting groove 7, through which the wires in the wiring groove 4 are clamped to ensure that one end of the wire fits with the inner wall of the contact end 5;

[0032] like Figure 4 ( Figure 4 The clamping mechanism includes a movable block 9, the bottom end of which is rotatably mounted in the mounting groove 7, a spring 8 is fixedly connected to an outer wall of one side of the movable block 9, and an end of the spring 8 away from the movable block 9 is fixedly connected to an inner wall of the mounting groove 7, and a pressing block 10 is fixedly connected to an outer wall of the movable block 9 away from the spring 8;

[0033] The pressing block 10 is an arc-shaped rubber body, and the material of the spring 8 is also rubber. Rubber has good insulation properties and is not prone to leakage, which effectively improves its safety.

[0034] The working principle of the clamping mechanism is as follows:

[0035] When it is necessary to insert the wire on the circuit breaker body 1 into the wiring slot 4, the movable block 9 is rotated in the direction close to the spring 8, so that the pressing block 10 leaves the wiring slot 4, and one end of the wire is directly inserted into the wiring slot 4, so that one end of the wire is tightly fitted with the inner wall of the contact end 5, and the movable block 9 is released. Under the action of the spring 8, the movable block 9 will drive the pressing block 10 to press the wire in the wiring slot 4, thereby realizing quick installation.

[0036] A pull ring 6 is installed at one end of the movable block 9 close to the spring 8. The pull ring 6 is arranged above the spring 8. The pull ring 6 is used to quickly pull the movable block 9.

[0037] Embodiment 2

[0038] In order to further improve the stability of the wire installed in the wiring slot 4, trapezoidal limit slots 12 are provided on the inner walls of both sides of the installation slot 7, and limit blocks 13 made of rubber are fixedly connected to the outer walls of both sides of the movable block 9, and the limit blocks 13 form a sliding fit with the inner walls of the limit slots 12;

[0039] like Figure 5 As shown, the closer the limit groove 12 is to one end of the spring 8, the larger the space is, while the volume of the limit block 13 remains unchanged. When the spring 8 pushes the movable block 9 to move in the direction of the wiring groove 4, the limit block 13 also moves in the limit groove 12, and the inner wall of the limit groove 12 gradually squeezes the limit block 13. At this time, the limit block 13 acts as a damping effect (when the wire enters the wiring groove 4, the spring 8 cannot fully extend. At this time, the movable block 9 is slightly pushed in the direction of the wire, and the friction between the limit groove 12 and the limit block 13 is used to fix the movable block 9).

[0040] The limiting block 13 and the limiting groove 12 have the effect of limiting and fixing the movable block 9, so that the movable block 9 is not easy to rotate, thereby ensuring that the wire is in a stable state in the wiring groove 4.

[0041] Embodiment 3

[0042] On the basis of the above two embodiments, a plurality of dustproof sheets 3 are further provided, and the shape formed by the installation slot 7 and the top opening of the wiring slot 4 is consistent with the shape of the dustproof sheet 3;

[0043] A sealing ring 11 is arranged at the top outer position of the wiring slot 4, and a notch is arranged on the sealing ring 11, which corresponds to the installation slot 7. In the actual installation process, so many wiring slots 4 are often not used. The wiring slots 4 without inserted wires and the corresponding installation slots 7 are sealed by the dustproof sheet 3, thereby achieving a dustproof effect.

[0044] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sensor for collecting current signals of circuit breaker which is easy to install, characterized in that: include: A sensor body (2), wherein a plurality of wiring slots (4) are arranged on the top of the sensor body (2), and the internal space of the wiring slots (4) gradually decreases from top to bottom; A contact end (5) mounted on the inner wall of the wiring slot (4), wherein the contact end (5) is a hollow metal ring; A plurality of mounting grooves (7) are provided on the top of the sensor body (2), the mounting grooves (7) being connected to the wiring grooves (4), a clamping mechanism being installed inside the mounting grooves (7), and the clamping mechanism entering into the wiring grooves (4) through the connection between the mounting grooves (7) and the wiring grooves (4).

2. The sensor for collecting current signals of a circuit breaker which is easy to install according to claim 1 is characterized in that: The clamping mechanism comprises a movable block (9), the bottom end of which is rotatably mounted in the mounting groove (7), a spring (8) being fixedly connected to an outer wall of one side of the movable block (9), and an end of the spring (8) away from the movable block (9) being fixedly connected to an inner wall of the mounting groove (7).

3. The sensor for collecting current signals of a circuit breaker which is easy to install according to claim 2 is characterized in that: A pressure block (10) is fixedly connected to an outer wall of the movable block (9) on a side away from the spring (8), and an outer wall of the pressure block (10) on a side close to the wiring slot (4) is in an arc shape.

4. The sensor for collecting current signals of a circuit breaker which is easy to install according to claim 3 is characterized in that: The inner walls on both sides of the installation groove (7) are provided with trapezoidal limiting grooves (12), the outer walls on both sides of the movable block (9) are fixedly connected to limiting blocks (13), and the limiting blocks (13) form a sliding fit with the inner walls of the limiting grooves (12).

5. The sensor for collecting circuit breaker current signals that is easy to install according to claim 4 is characterized in that: A sealing ring (11) is fixedly connected to the top outer wall of the sensor body (2), and the sealing ring (11) is arranged on the periphery of the wiring slot (4).

6. The sensor for collecting current signals of a circuit breaker which is easy to install according to claim 5 is characterized in that: The sealing ring (11), the limiting block (13), the spring (8) and the pressing block (10) are all made of rubber.

7. The sensor for collecting current signals of a circuit breaker which is easy to install according to claim 2 is characterized in that: A pull ring (6) is installed on the outer wall of one side of the pressing block (10) close to the spring (8), and the pull ring (6) is arranged above the spring (8).

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