Residual current protection device

Abstract

The utility model relates to the technical field of power systems and automation thereof, in particular to a residual current protection device, which comprises a base frame, a residual current protector body is slidably covered on one side of the front surface of the base frame, a cross turntable is rotatably arranged at the central point of the inner wall of the base frame through a bearing seat, and a transparent cover is fixed at one end of a slider. The mounting base frame, the fixing blocks, the cross-shaped rotating disc, the limiting grooves, the movable inserting plates, the limiting blocks, the square plates, the fixing pins, the reset springs, the formed square grooves and the formed inserting holes are used in cooperation, the use frequency of external tools is reduced, and the dismounting and mounting steps are more convenient and faster. The residual electricity protector body, the transparent cover, the sliding block, the cleaning soft brush, the anti-falling pin and the formed sliding groove are installed and used in cooperation, exposed parts of the residual electricity protector body can be protected through the transparent cover, and meanwhile dust can be effectively prevented from covering a display screen of the residual electricity protector body.

Description

Technical Field

[0001] The utility model relates to the technical field of power system and automation thereof, in particular to a residual current protection device. Background Art

[0002] The power system is a complex network consisting of power plants, transmission lines, substations and distribution networks. Its main function is to transmit the electricity generated by the power plant to various users or load ends. In this system, power automation plays a vital role. It improves the efficiency, reliability and safety of the power system through automated control and monitoring systems. Residual power protection devices are often used in power systems. The main function of this device is to monitor the current flow and voltage in the power system to ensure the stable operation of the system and prevent potential failures. When abnormal conditions such as overload or short circuit occur in the power system, the residual power protection device can detect and cut off the circuit in time to prevent the fault from further expanding and protect the safety of equipment and personnel.

[0003] At present, most of the common residual current protection devices on the market are fixed to the wall with multiple screws. However, when they need to be disassembled for maintenance, they need to use external tools to remove the screws one by one. The disassembly and assembly steps are time-consuming and laborious, and the original screw holes are damaged when they are installed again, which will affect the stability of the subsequent installation of the device. In addition, the display screen and buttons of ordinary residual current protection devices are directly exposed to the outside, which are easily touched by mistake, and additional tools are needed to clean the dust, which is not convenient to use.

[0004] Therefore, we propose a residual current protection device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a residual current protection device to solve the problem that the ordinary residual current protection device proposed in the above background technology needs to be disassembled for maintenance, the disassembly and assembly steps are time-consuming and laborious, and the original screw holes are damaged when reinstalled, which will affect the stability of the subsequent device installation. In addition, the display screen and buttons of the ordinary residual current protection device are directly exposed to the outside and are easily touched by mistake, and additional tools are needed to clean the dust.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a residual current protection device, comprising a base frame, a connecting plate is fixed in the middle of the four sides of the base frame, and a fastening bolt is inserted through the middle thread of the connecting plate, a sliding cover on the front side of the base frame is provided with a residual current protector body, and the four sides of the residual current protector body are fixed with fixing blocks, a cross turntable is rotatably arranged at the center point of the inner wall of the base frame through a bearing seat, and a socket is provided at one end of the cross turntable, and limiting grooves are provided on the four sides of the limiting groove, a movable plug plate is slidably inserted inside the limiting groove, and the outer surface of one end of the movable plug plate slides A limit block is provided, one side of the limit block is fixedly connected to one side of the inner wall of the base frame, both sides of the residual current protector body are provided with sliding grooves, and a slider is slidably inserted inside the sliding groove, a transparent cover is fixed to one end of the slider, and a cleaning soft brush is provided at the bottom end of the inner wall of the transparent cover, anti-slip pins are fixed at both ends of the top inner wall of the transparent cover, and the anti-slip pins are slidably inserted inside the top end of the residual current protector body, a square groove is provided on one side of the base frame, square plates are fixed at both ends of one side of the base frame near the square groove, and a fixing pin is slidably inserted through the middle of the square plate, and a reset spring is provided for the middle sliding sleeve on the outer surface of the fixing pin.

[0007] Preferably, the slide groove is arranged in an inverted L shape, and two groups of slide grooves are arranged, and the two groups of slide grooves are symmetrically distributed at both ends of one side of the residual current protector body, and the slide groove is adapted to the slider, and the two are slidably connected with no gap in between.

[0008] Preferably, the fixed blocks, the movable plug plates and the limit blocks are each provided with four groups, and the four groups of the fixed blocks, the movable plug plates and the limit blocks are distributed inside the base frame in a circular axis array with the center point of the inner wall of the base frame as the center.

[0009] Preferably, one end of the movable plug plate passes through the side wall of the base frame and slides through to be inserted inside one end of the fixed block.

[0010] Preferably, one end of the cross turntable is slidably inserted into the square groove, and the two are tightly attached to each other without leaving a gap in between.

[0011] Preferably, the middle outer surface of the fixing pin is set as a large disk, and the diameter of the large disk is larger than the diameter of the return spring, one end of the return spring is fixedly connected to one side of the large disk, and the other end of the return spring is fixedly connected to one side of the square plate, one end of the fixing pin is adapted to the socket, and one end of the fixing pin is slidably inserted inside the socket.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the utility model;

[0013] By installing the base frame, fixing block, cross turntable, limit slot, movable plug plate, limit block, square plate, fixing pin, reset spring and the opened square slot and socket, no other tools are needed. The residual current protector body can be separated from the base frame only by rotating one end of the cross turntable, thereby reducing the frequency of using external tools and making the disassembly and assembly steps more convenient and quicker. Compared with the traditional disassembly and assembly method, it is faster, saves the time required for maintenance, and also saves the operating energy of the maintenance personnel. It can also effectively avoid damage to the wall due to repeated insertion of screws, thereby preventing the screws from slipping, thereby ensuring the durability of the stable installation of the device.

[0014] By installing the residual power protector body, transparent cover, slider, cleaning soft brush, anti-drop pin and the opened slide groove, the transparent cover can be used to protect the exposed parts of the residual power protector body to prevent people from accidentally touching the buttons, resulting in loss of device function, ensuring the safety of the device. It can also effectively prevent dust from covering the display screen of the residual power protector body, thereby affecting the user's viewing of relevant data information. Combined with the setting of the cleaning soft brush, there is no need to spend time looking for additional cleaning tools to wipe the residual power protector body. By pulling the transparent cover back and forth, the surface of the residual power protector body can be simply cleaned, which enhances the convenience of use of the device and makes the use of the device more humane. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a front view stereoscopic schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a cutaway rear perspective schematic diagram of the structure of the utility model;

[0018] Figure 3 It is a rear perspective schematic diagram of the structure of the utility model in a partially disassembled state;

[0019] Figure 4 It is a partial cross-sectional three-dimensional schematic diagram of the structure of the utility model;

[0020] Figure 5 It is an enlarged three-dimensional schematic diagram of the structural part of the utility model.

[0021] In the figure: 1. base frame; 2. connecting plate; 3. fastening bolts; 4. residual current protector body; 5. fixing block; 6. transparent cover; 7. slide groove; 8. slider; 9. cleaning soft brush; 10. anti-drop pin; 11. cross turntable; 12. limit groove; 13. movable plug plate; 14. limit block; 15. square groove; 16. square plate; 17. fixing pin; 18. reset spring; 19. socket. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model provides an embodiment: a residual current protection device, including a base frame 1, a connecting plate 2 is fixed in the middle of the four sides of the base frame 1, and a fastening bolt 3 is inserted through the middle thread of the connecting plate 2, a sliding cover on the front side of the base frame 1 is provided with a residual current protector body 4, and the four sides of the residual current protector body 4 are fixed with a fixing block 5, a cross turntable 11 is rotatably arranged at the center point of the inner wall of the base frame 1 through a bearing seat, and a socket 19 is opened at one end of the cross turntable 11, and a limiting groove 12 is opened on the four sides of the cross turntable 11, and a movable plug plate 13 is inserted in the inner sliding of the limiting groove 12, and a sliding sleeve is provided on the outer surface of one end of the movable plug plate 13 A limit block 14, one side of which is fixedly connected to one side of the inner wall of the base frame 1, two sides of the residual current protector body 4 are provided with slide grooves 7, and a slider 8 is slidably inserted inside the slide groove 7, a transparent cover 6 is fixed at one end of the slider 8, and a cleaning soft brush 9 is provided at the bottom end of the inner wall of the transparent cover 6, anti-drop pins 10 are fixed at both ends of the top inner wall of the transparent cover 6, and the anti-drop pins 10 are slidably inserted inside the top of the residual current protector body 4, a square groove 15 is provided on one side of the base frame 1, and square plates 16 are fixed at both ends of one side of the base frame 1 near the square groove 15, and a fixing pin 17 is slidably inserted in the middle of the square plate 16, and a reset spring 18 is provided for the middle sliding sleeve on the outer surface of the fixing pin 17;

[0024] Further, the slide groove 7 is set to an inverted L shape, and there are two groups of slide grooves 7, which are symmetrically distributed at both ends of one side of the residual current protector body 4. The slide groove 7 is adapted to the slider 8, and the two are slidably connected without leaving a gap in the middle. Figure 2 As shown, the transparent cover 6 can be assembled and disassembled more simply and quickly, and the close contact between the slider 8 and the slide groove 7 also makes the transparent cover 6 and the residual current protector body 4 have a better fixing effect.

[0025] Further, the fixed block 5, the movable plug plate 13 and the limit block 14 are each provided with four groups, and the four groups of fixed blocks 5, the movable plug plate 13 and the limit block 14 are distributed inside the base frame 1 in a circular axis array with the center point of the inner wall of the base frame 1 as the center of the circle. Figure 1 , Attachment Figure 3 and attached Figure 4 As shown, the base frame 1 and the residual current protector body 4 are fixed more evenly, with better effect and are not easy to fall off.

[0026] Further, one end of the movable plug plate 13 passes through the side wall of the base frame 1 and is inserted into the inner part of one end of the fixed block 5. Figure 1 and attached Figure 4 As shown, it is convenient to fix the base frame 1 and the residual current protector body 4.

[0027] Further, one end of the cross turntable 11 is inserted into the square groove 15 in a sliding manner, and the two are closely attached to each other without leaving a gap in the middle. Figure 1 , Attachment Figure 4 and attached Figure 5 As shown, it is convenient for the user to smoothly rotate the cross turntable 11 outside the base frame 1.

[0028] Further, the middle outer surface of the fixing pin 17 is set as a large disc, and the diameter of the large disc is larger than the diameter of the return spring 18, one end of the return spring 18 is fixedly connected to one side of the large disc, and the other end of the return spring 18 is fixedly connected to one side of the square plate 16, and one end of the fixing pin 17 is adapted to the socket 19, and one end of the fixing pin 17 is slidably inserted in the inside of the socket 19. Figure 1 and attached Figure 5 As shown, the fixing pin 17 will not be easily separated from the jack 19 when no force is applied, thereby ensuring that the angle of the cross-shaped rotating disk 11 is fixed and preventing the cross-shaped rotating disk 11 from rotating and causing the residual current protector body 4 to fall off.

[0029] Working principle: when in use, first put the base frame 1 in a suitable position, then pass the fastening bolts 3 through the connecting plate 2 and threadedly connect it to the external wall to fix the device on the wall, then slide the residual current protector body 4 onto one end of the front side of the outer surface of the base frame 1, and then pull one group of fixing pins 17 along the middle of one group of square plates 16 to compress one group of reset springs 18, and after one end of one group of fixing pins 17 completely slides out from the inside of the socket 19, one end of the cross turntable 11 can be rotated clockwise along the inside of the square groove 15, and as the cross turntable 11 rotates, one end of the moving plug plate 13 slides along the inside of the limit groove 12, and at the same time, the moving plug plate 13 The other end slides inside the limit block 14, and slides through one side of the base frame 1 and is inserted into one end of the fixed block 5. Finally, the plug plate 13 is moved to fix the base frame 1 and the fixed block 5, so that the residual current protector body 4 and the base frame 1 will not be separated. Then pull the other set of fixing pins 17, and release the fixing pins 17 when the sockets 19 are located at the other set of fixing pins 17. Under the rebound force of the other set of reset springs 18, one end of the fixing pin 17 slides into the sockets 19, so that the cross turntable 11 will not rotate easily, thereby ensuring the stability of the base frame 1 and the residual current protector body 4. The base frame 1 and the residual current protector body 4 can be quickly separated by reversing the above steps.

[0030] Then, cover the transparent cover 6 on the front of the residual current protector body 4, insert the slider 8 into the slide groove 7, and slide along the slide groove 7 until the transparent cover 6 completely covers the front of the residual current protector body 4. At this time, the anti-drop pin 10 is slid into the top of the residual current protector body 4, so that the transparent cover 6 will not fall or tilt easily. When dust removal is needed, the transparent cover 6 can be repeatedly slid up and down to make the cleaning soft brush 9 slide on the surface of the residual current protector body 4 to remove the dust on the surface of the residual current protector body 4. Finally, connect the external wires to the residual current protector body 4 for use. The transformer in the residual current protector body 4 will pass the current through a coil. When the current passes through the coil, the magnetic field generated will cause a residual current. The residual current protector body 4 will determine whether there is a fault by monitoring this current imbalance and immediately cut off the circuit to protect the safe operation of the equipment and system. This is an existing mature technology and will not be elaborated on here. The above is the entire working principle of the utility model.

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A residual current protection device, comprising a base frame (1), characterized in that: A connecting plate (2) is fixed in the middle of the four side edges of the base frame (1), and a fastening bolt (3) is inserted through the middle thread of the connecting plate (2). A sliding cover on the front side of the base frame (1) is provided with a residual current protector body (4), and four side edges of the residual current protector body (4) are fixed with fixing blocks (5). A cross turntable (11) is rotatably arranged at the center point of the inner wall of the base frame (1) through a bearing seat, and a plug hole (19) is provided at one end of the cross turntable (11). Limiting grooves (12) are provided on the four sides of the cross turntable (11), and a movable plug plate (13) is slidably inserted inside the limiting groove (12), and a limiting block (14) is slidably sleeved on the outer surface of one end of the movable plug plate (13), and one side of the limiting block (14) is rotatably sleeved with the base frame (1). The residual current protector body (4) is fixedly connected to one side of the inner wall of the residual current protector body (4), and the two sides of the residual current protector body (4) are provided with sliding grooves (7), and the inside of the sliding grooves (7) is slidably inserted with a slider (8), one end of the slider (8) is fixed with a transparent cover (6), and the bottom end of the inner wall of the transparent cover (6) is provided with a cleaning soft brush (9), and the top inner wall of the transparent cover (6) is fixed with anti-drop pins (10) at both ends, and the anti-drop pins (10) are slidably inserted inside the top of the residual current protector body (4), and a square groove (15) is opened on one side of the base frame (1), and a square plate (16) is fixed at both ends of one side of the base frame (1) near the square groove (15), and a fixing pin (17) is slidably inserted in the middle of the square plate (16), and a reset spring (18) is provided on the middle sliding sleeve of the outer surface of the fixing pin (17).

2. A residual current protection device according to claim 1, characterized in that: The slide groove (7) is arranged in an inverted L shape, and two groups of the slide grooves (7) are arranged. The two groups of the slide grooves (7) are symmetrically distributed at both ends of one side of the residual current protector body (4). The slide groove (7) is matched with the slider (8), and the two are slidably connected with no gap in between.

3. A residual current protection device according to claim 1, characterized in that: The fixed blocks (5), the movable plug plates (13) and the limit blocks (14) are each provided in four groups, and the four groups of the fixed blocks (5), the movable plug plates (13) and the limit blocks (14) are distributed inside the base frame (1) in a circular axis array manner with the center point of the inner wall of the base frame (1) as the center of the circle.

4. A residual current protection device according to claim 1, characterized in that: One end of the movable plug plate (13) passes through the side wall of the base frame (1) and slides through to be inserted into the interior of one end of the fixed block (5).

5. A residual current protection device according to claim 1, characterized in that: One end of the cross turntable (11) is slidably inserted into the square groove (15), and the two are tightly attached to each other with no gap in between.

6. A residual current protection device according to claim 1, characterized in that: The middle outer surface of the fixing pin (17) is arranged as a large disc, and the diameter of the large disc is larger than the diameter of the return spring (18); one end of the return spring (18) is fixedly connected to one side of the large disc, and the other end of the return spring (18) is fixedly connected to one side of the square plate (16); one end of the fixing pin (17) is matched with the insertion hole (19), and one end of the fixing pin (17) is slidably inserted into the interior of the insertion hole (19).

Images