Wiring device and control and protection switching device

Abstract

The utility model belongs to the technical field of low-voltage electric appliances, and discloses a wiring device and a control and protection switch electric appliance. The wiring device comprises a wiring frame, a pressing plate and a fastening piece, the pressing plate is connected to the wiring frame through the fastening piece, the fastening piece is in threaded connection with the wiring frame, the fastening piece rotates to drive the pressing plate to move relative to the wiring frame so as to be matched with the wiring frame to clamp a wire, and the pressing plate shields an opening in one side, where the wire is inserted, of the wiring frame. The wiring frame and the pressing plate are arranged, the pressing plate is arranged on the wiring frame by means of threaded connection of the fastener and the wiring frame, when the fastener rotates, the pressing plate is driven to move relative to the wiring frame, the pressing plate and the wiring frame can clamp a wire, and at the moment, the pressing plate can shield an opening in one side, where the wire is inserted, of the wiring frame; therefore, the arc is effectively isolated and blocked and is prevented from overflowing and splashing from the opening to cause short circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of low-voltage electrical appliances, in particular to a wiring device and a control and protection switch electrical appliance. Background Art

[0002] Control and protection switchgear is an electrical device that integrates control and protection functions. In the process of breaking rated current, it requires faster breaking speed and efficient arc extinguishing ability to achieve frequent operation and higher reliability.

[0003] In the prior art, control and protection switch electrical appliances use a pad-type wiring device. When disconnecting the current, the arc extinguishing chamber is not enough to achieve complete arc extinguishing. The arc is insufficient, and the arc is easy to spray out from the wiring device. The arc splashing can easily cause a three-phase short circuit, thereby generating a huge thermal effect and electrodynamic effect, causing the equipment to overheat, damage, or even explode.

[0004] Therefore, there is an urgent need to provide a wiring device and a control and protection switch electrical appliance to isolate and block the arc and prevent the arc from overflowing and splashing from the wiring device to cause a short circuit. Utility Model Content

[0005] The utility model aims to provide a wiring device and a control and protection switch electrical appliance, so as to effectively isolate and block the arc and prevent the arc from overflowing and splashing from the wiring device to cause a short circuit.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a wiring device, which comprises a wiring frame, a pressing plate and a fastener, wherein the pressing plate is connected to the wiring frame through the fastener, and the fastener is screwed to the wiring frame;

[0008] The rotation of the fastener is used to drive the pressure plate to move relative to the wiring frame to cooperate with the wiring frame to clamp the wire, and the pressure plate covers a side opening of the wiring frame for inserting the wire.

[0009] As an optional technical solution for a wiring device, the wiring frame and the pressure plate are both made of magnetic conductive materials.

[0010] As an optional technical solution of a wiring device, the pressing plate includes:

[0011] A baffle, the baffle shielding a side opening of the wiring frame for inserting the wire;

[0012] A first connecting plate and a second connecting plate, wherein the first connecting plate and the second connecting plate are both connected to the baffle, the first connecting plate extends into the wiring frame, the second connecting plate is placed outside the wiring frame, and the fastener passes through the second connecting plate and the wiring frame and presses against the first connecting plate.

[0013] As an optional technical solution for the wiring device, a baffle is provided on the fastener, and the baffle is placed between the wiring frame and the second connecting plate, and the second connecting plate is overlapped on the baffle.

[0014] As an optional technical solution for the wiring device, a limiting opening is provided on the second connecting plate, the fastener is passed through the limiting opening, and the inner side wall of the limiting opening is matched with the outer side wall of the fastener.

[0015] As an optional technical solution for the wiring device, a notch is provided on one side of the limiting opening, the notch passes through the end of the second connecting plate away from the baffle, and the diameter of the notch is smaller than the diameter of the limiting opening.

[0016] As an optional technical solution for a wiring device, the notch is in a trumpet shape, and the diameter of one end of the notch connected to the limit opening is smaller than the diameter of the other end.

[0017] As an optional technical solution for the wiring device, the second connecting plate is further provided with a strip hole, one end of the strip hole is connected to the limiting opening and the other end extends to the baffle.

[0018] The utility model provides a control and protection switch electrical appliance, which comprises the above wiring device.

[0019] As an optional technical solution for controlling and protecting switching electrical appliances, it also includes a static contact connecting plate and a partition frame, the partition frame includes multiple isolation frames and multiple surrounding frames, the isolation frames and the surrounding frames are arranged in a one-to-one correspondence, the wiring device is arranged in the surrounding frame, the static contact connecting plate is arranged in the isolation frame, and the static contact connecting plate passes through the side wall of the isolation frame and is inserted into the wiring frame.

[0020] Beneficial effects:

[0021] The utility model provides a wiring device, which includes a wiring frame, a pressure plate and a fastener. The pressure plate is connected to the wiring frame through the fastener, and the fastener is screwed to the wiring frame. The rotation of the fastener is used to drive the pressure plate to move relative to the wiring frame, so as to cooperate with the wiring frame to clamp the wire, and the pressure plate covers the opening of the wiring frame on one side for the wire to be inserted. By setting the wiring frame and the pressure plate, and screwing the fastener to the wiring frame to set the pressure plate on the wiring frame, when the fastener rotates, the pressure plate is driven to move relative to the wiring frame, and the pressure plate and the wiring frame can clamp the wire. At this time, the pressure plate can cover the opening of the wiring frame on one side for the wire to be inserted, thereby effectively isolating and blocking the arc to prevent the arc from overflowing from the opening and splashing to cause a short circuit.

[0022] The utility model provides a control and protection switch electrical appliance, comprising the above-mentioned wiring device. By arranging the above-mentioned wiring device, it is possible to prevent the arc from overflowing and splashing from the wiring device to cause a short circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a wiring device provided by an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a pressing plate provided in an embodiment of the utility model;

[0025] Figure 3 It is a structural schematic diagram of a wiring device and a static contact connection plate provided by an embodiment of the utility model;

[0026] Figure 4 It is a disassembled diagram of the wiring device and the static contact connection plate provided in the embodiment of the utility model;

[0027] Figure 5 is a cross-sectional view of an isolation frame provided by an embodiment of the utility model;

[0028] Figure 6 It is a cross-sectional view of a wiring device and a stationary contact connection plate provided by an embodiment of the utility model;

[0029] Figure 7 It is a cross-sectional view of a control and protection switch electrical appliance provided by an embodiment of the utility model.

[0030] In the figure:

[0031] 10. Wiring device; 11. Wiring frame; 12. Pressing plate; 121. First connecting plate; 122. Baffle plate; 123. Second connecting plate; 1231. Positioning opening; 1232. Notch; 1233. Strip hole; 13. Fastener; 14. Baffle plate;

[0032] 20, partition frame; 21, surrounding frame; 211, receiving groove; 212, first socket; 213, second socket; 22, isolation frame;

[0033] 51. Base; 52. Housing; 53. Arc extinguishing chamber; 54. Static contact connecting plate; 55. Moving contact. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figure 1 and Figure 2As shown, on one hand, this embodiment provides a wiring device 10, which includes a wiring frame 11, a pressure plate 12 and a fastener 13. The pressure plate 12 is connected to the wiring frame 11 through the fastener 13, and the fastener 13 is screwed to the wiring frame 11; the fastener 13 rotates to drive the pressure plate 12 to move relative to the wiring frame 11, so as to cooperate with the wiring frame 11 to clamp the wire, and enable the pressure plate 12 to cover a side opening of the wiring frame 11 for inserting the wire.

[0039] By setting the wiring frame 11 and the pressure plate 12, and screwing the pressure plate 12 with the wiring frame 11 using the fastener 13, when the fastener 13 rotates, the pressure plate 12 is driven to move relative to the wiring frame 11, and the pressure plate 12 and the wiring frame 11 can clamp the wire. At this time, the pressure plate 12 can cover the side opening of the wiring frame 11 for inserting the wire, thereby effectively isolating and blocking the arc to prevent the arc from overflowing and splashing from the opening to cause a short circuit.

[0040] Specifically, the pressure plate 12 includes a baffle 122, a first connecting plate 121 and a second connecting plate 123. The baffle 122 blocks a side opening of the wiring frame 11 for inserting the wire. The first connecting plate 121 and the second connecting plate 123 are both connected to the baffle 122. The first connecting plate 121 extends into the wiring frame 11, and the second connecting plate 123 is placed outside the wiring frame 11. The fastener 13 passes through the second connecting plate 123 and the wiring frame 11 and presses against the first connecting plate 121. By setting the first connecting plate 121, the second connecting plate 123 and the baffle 122, the fastener 13 is used to pass through the second connecting plate 123 and then the pressing plate 12 is set on the wiring frame 11. When the fastener 13 is screwed, the fastener 13 drives the pressing plate 12 to move relative to the wiring frame 11, and the first connecting plate 121 extending into the wiring frame 11 cooperates with the wiring frame 11 to clamp the wire. At the same time, the baffle 122 blocks the side opening of the wiring frame 11 for inserting the wire, thereby effectively isolating and blocking the arc to prevent the arc from overflowing from the opening.

[0041] Specifically, the materials of the wiring frame 11 and the pressure plate 12 are both magnetically conductive materials. In this embodiment, the materials of the wiring frame 11 and the pressure plate 12 are Q195, which has good magnetic conductivity and can effectively attract and gather arcs in a magnetic field, and effectively extinguish the arc by attracting, stretching and keeping the arc in the wiring frame 11.

[0042] Optionally, the wiring device 10 further includes a baffle 14, which is disposed between the wiring frame 11 and the second connecting plate 123, and the second connecting plate 123 is overlapped on the baffle 14. By providing the baffle 14 and overlapping the second connecting plate 123 on the baffle 14, the installation position of the second connecting plate 123 can be limited, which helps to stabilize the pressing plate 12.

[0043] Optionally, a limiting opening 1231 is provided on the second connecting plate 123, and the fastener 13 is inserted through the limiting opening 1231, and the inner side wall of the limiting opening 1231 is matched with the outer side wall of the fastener 13. By providing the limiting opening 1231 on the second connecting plate 123, the fastener 13 can be inserted into the limiting opening 1231 of the second connecting plate 123, and then the inner side wall of the limiting opening 1231 is used to limit the setting position of the fastener 13, and the structure is simple and easy to install.

[0044] In this embodiment, the fastener 13 is a screw; the wiring frame 11 is a U-shaped frame, and a threaded hole is provided at the top of the wiring frame 11 for installing the fastener 13. The top and bottom ends of the fastener 13 extend outside the threaded hole. The bottom end of the fastener 13 is against the first connecting plate 121, and the baffle 14 is sleeved on the top end of the fastener 13. The top end of the fastener 13 is inserted into the limiting opening 1231 of the second connecting plate 123, and the second connecting plate 123 is overlapped on the baffle 14. The structure is simple, easy to disassemble and assemble, and flexible to move. Specifically, the inner walls on both sides of the limiting opening 1231 are arc surfaces, and the fastener 13 is clamped between the two arc surfaces. The arc surface of the limiting opening 1231 is adapted to the fastener 13, which can limit the fastener 13 from both sides to prevent the fastener 13 from radial movement and dislocation, and does not hinder the fastener 13 from rotating around its own axis.

[0045] Optionally, the first connecting plate 121 is provided with an indentation on the side facing away from the fastener 13. The indentation is formed by applying a certain pressure on the first connecting plate 121 by a crimping tool. By providing an indentation on the surface of the first connecting plate 121, it can ensure that the contact between the wiring device 10 and the wire is closer, and can fully engage with the wire to prevent the wire from loosening and falling out of the wiring device 10 due to vibration, external force pulling, etc., thereby ensuring the reliability of the connection; and a good indentation can increase the contact area with the wire. According to the law of resistance, the larger the contact area, the smaller the contact resistance, thereby reducing the heat generated by the passage of current, and reducing the possibility of heating, sparking, and even fire due to excessive contact resistance, thereby improving the safety and stability of the circuit. In some complex wiring situations, the indentation can also help distinguish different wires.

[0046] In this embodiment, the first connecting plate 121 and the second connecting plate 123 are arranged in parallel and spaced apart, and the top end of the fastener 13 is connected to the second connecting plate 123 and the bottom end is against the first connecting plate 121. By arranging the first connecting plate 121 and the second connecting plate 123 in parallel and spaced apart on the baffle 122, when the second connecting plate 123 is placed on the baffle 14, the setting direction of the second connecting plate 123 can be limited, thereby ensuring the stability of the pressing line.

[0047] Optionally, a notch 1232 is provided on one side of the limiting opening 1231, the notch 1232 penetrates the end of the second connecting plate 123 away from the baffle 122, and the diameter of the notch 1232 is smaller than the diameter of the limiting opening 1231. By providing the notch 1232 on one side of the limiting opening 1231, there is no need to penetrate the fastener 13, and the fastener 13 can be pushed into the limiting opening 1231 from the notch 1232, which is convenient for operation.

[0048] In this embodiment, the notch 1232 is in a trumpet shape, and the diameter of one end of the notch 1232 connected to the limiting opening 1231 is smaller than the diameter of the other end. By setting the notch 1232 in a trumpet shape, it is easy to find the position of the notch 1232 when installing the fastener 13, which reduces the difficulty of installing the fastener 13.

[0049] Furthermore, the second connecting plate 123 is further provided with a strip hole 1233, one end of which is connected to the limiting opening 1231 and the other end of which extends to the baffle 122, and one end of which is connected to the limiting opening 1231 and the other end of which extends to the baffle 122. By providing the strip hole 1233 on the second connecting plate 123, one end of which is connected to the limiting opening 1231 and the other end of which extends to the baffle 122, the limiting opening 1231 of the second connecting plate 123 is further enlarged, that is, the opening degree of the limiting opening 1231 can be larger, so as to be suitable for fasteners 13 of different sizes. In this embodiment, the pressing plate 12 is formed by bending a plate-like material.

[0050] like Figures 3 to 7 As shown, another aspect of this embodiment provides a control and protection switch electrical appliance, including the wiring device 10 mentioned above.

[0051] Specifically, the control and protection switch electrical apparatus further includes a static contact connection plate 54 and a partition frame 20, the partition frame 20 includes a plurality of isolation frames 22 and a plurality of enclosure frames 21, the isolation frames 22 and the enclosure frames 21 are arranged one by one, the wiring device 10 is arranged in the enclosure 21, the static contact connection plate 54 is arranged in the isolation frame 22, and the static contact connection plate 54 is inserted into the wiring frame 11 through the side wall of the isolation frame 22. By inserting the static contact connection plate 54 into the wiring frame 11, the arc moving along the static contact connection plate 54 can be further attracted into the wiring frame 11, thereby ensuring a better arc extinguishing capability.

[0052] In this embodiment, the partition frame 20 is made of insulating material. By providing the partition frame 20, the wiring devices 10 of different phases and the corresponding static contact connecting plates 54 can be separated, which can ensure the safe operation of the control and protection switch electrical equipment.

[0053] Specifically, the enclosure 21 is provided with a receiving groove 211, and the wiring frame 11 is inserted into the receiving groove 211; a first socket 212 and a second socket 213 are respectively provided on both sides of the enclosure 21, and the isolation frame 22 is connected with the enclosure 21 through the first socket 212, and the static contact connecting plate 54 is arranged on the isolation frame 22, and the end of the static contact connecting plate 54 is inserted into the receiving groove 211 from the first socket 212 and inserted into the wiring frame 11, and the wire is inserted into the wiring frame 11 from the second socket 213, and the first connecting plate 121 of the pressure plate 12 can press the wire onto the static contact connecting plate 54.

[0054] In this embodiment, the partition frame 20 includes three isolation frames 22 and three surrounding frames 21. Two adjacent isolation frames 22 are connected, and two adjacent surrounding frames 21 are connected to the corresponding isolation frames 22 and are arranged at intervals; and three wiring devices 10 are correspondingly arranged for correspondingly connecting three-phase wires. The wiring devices 10 of each phase and the static contact connecting plate 54 can be individually isolated to ensure stable transmission of electricity.

[0055] In this embodiment, the control and protection switch electrical appliance also includes a base 51, a shell 52, an arc extinguishing chamber 53 and a moving contact 55. The partition frame 20 is arranged on the base 51, and the arc extinguishing chamber 53 and the moving contact 55 are both arranged in the shell 52; the static contact connecting plate 54 is in the shape of a bent long strip; the static contact connecting plate 54 includes a connecting section, a first section and a second section, and the two ends of the connecting section are respectively connected to the first section and the second section, the first section and the second section are parallel and spaced apart, the first section is used to cooperate with the moving contact 55, and the second section is used to be inserted into the isolation frame 22 and inserted from the first socket 212 into the wiring frame 11 located in the accommodating groove 211.

[0056] During installation, the wiring device 10 is placed in the receiving groove 211 of the partition frame 20, and then the static contact connecting plate 54 is installed, so that the static contact connecting plate 54 is inserted into the wiring frame 11, and finally the fastener 13 is screwed, and the movement of the fastener 13 can drive the wiring frame 11 to move, and then the wire is crimped on the static contact connecting plate 54. By arranging the above-mentioned wiring device 10 in the control and protection switch electrical appliance, the arc is attracted and held in the wiring frame 11, which can be effectively extinguished, and the baffle 122 is used to isolate and block the arc to prevent the arc from overflowing and causing a short circuit.

[0057] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A wiring device, characterized in that: It comprises a wiring frame (11), a pressing plate (12) and a fastener (13), wherein the pressing plate (12) is connected to the wiring frame (11) via the fastener (13), and the fastener (13) is screwed to the wiring frame (11); The fastener (13) is rotated to drive the pressure plate (12) to move relative to the wiring frame (11) to cooperate with the wiring frame (11) to clamp the wire, and enables the pressure plate (12) to cover a side opening of the wiring frame (11) for inserting the wire.

2. The wiring device according to claim 1, characterized in that: The materials of the wiring frame (11) and the pressing plate (12) are both magnetic conductive materials.

3. The wiring device according to claim 1, characterized in that: The pressing plate (12) comprises: a baffle (122), the baffle (122) shielding a side opening of the wiring frame (11) for inserting the wire; A first connecting plate (121) and a second connecting plate (123), wherein the first connecting plate (121) and the second connecting plate (123) are both connected to the baffle (122), the first connecting plate (121) extends into the wiring frame (11), the second connecting plate (123) is placed outside the wiring frame (11), and the fastener (13) passes through the second connecting plate (123) and the wiring frame (11) and is pressed against the first connecting plate (121).

4. The wiring device according to claim 3, characterized in that: The fastener (13) is provided with a baffle (14), the baffle (14) is placed between the wiring frame (11) and the second connecting plate (123), and the second connecting plate (123) is overlapped on the baffle (14).

5. The wiring device according to claim 3, characterized in that: The second connecting plate (123) is provided with a limiting opening (1231), the fastener (13) is passed through the limiting opening (1231), and the inner side wall of the limiting opening (1231) is adapted to the outer side wall of the fastener (13).

6. The wiring device according to claim 5, characterized in that: A notch (1232) is provided on one side of the limiting opening (1231), the notch (1232) passes through the end of the second connecting plate (123) away from the baffle (122), and the caliber of the notch (1232) is smaller than the caliber of the limiting opening (1231).

7. The wiring device according to claim 6, characterized in that: The notch (1232) is in the shape of a trumpet, and the caliber of one end of the notch (1232) connected to the limiting opening (1231) is smaller than the caliber of the other end.

8. The wiring device according to claim 5, characterized in that: The second connecting plate (123) is further provided with a strip-shaped hole (1233), one end of the strip-shaped hole (1233) being in communication with the limiting opening (1231) and the other end extending to the baffle (122).

9. Control and protection switch electrical appliance, characterized in that: The invention comprises a wiring device as claimed in any one of claims 1 to 8.

10. The control and protection switch electrical apparatus according to claim 9, characterized in that: It also includes a stationary contact connecting plate (54) and a partition frame (20), wherein the partition frame (20) includes a plurality of isolation frames (22) and a plurality of surrounding frames (21), wherein the isolation frames (22) and the surrounding frames (21) are arranged in a one-to-one correspondence, wherein the wiring device is arranged in the surrounding frame (21), and the stationary contact connecting plate (54) is arranged in the isolation frame (22), and the stationary contact connecting plate (54) penetrates the side wall of the isolation frame (22) and is inserted into the wiring frame (11).

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