Anti-off-line relay

Abstract

According to the technical scheme, the relay comprises a shell, a relay body is arranged in the shell, a plurality of wiring holes are formed in the two sides of the shell, hole connecting cavities are formed in the wiring holes, dustproof mechanisms are hinged to cavity openings of the hole connecting cavities, wiring copper sheets are further arranged in the hole connecting cavities, and the wiring copper sheets are connected with the wiring holes. The wiring hole is provided with a wiring copper sheet, the wiring copper sheet is electrically connected with the interface of the relay body, an anti-drop interface can be inserted into the wiring hole, the anti-drop interface comprises a connecting copper sheet, when the anti-drop interface is inserted into the wiring hole, the connecting copper sheet abuts against the wiring copper sheet, a wire can be inserted into the anti-drop interface, and when the wire is inserted, the connecting copper sheet abuts against the wiring copper sheet. A copper wire in the electric wire abuts against the connecting copper sheet, and the electric wire is electrically connected with the wiring copper sheet through the connecting copper sheet.

Description

Technical Field

[0001] The utility model relates to the field of relays, in particular to a relay for preventing line disconnection. Background Art

[0002] A relay is an electronic control device that is often used in automatic control circuits. It has functions such as automatic adjustment, safety protection, and circuit conversion. It is an "automatic switch" that uses a smaller current to control a larger current.

[0003] When most of the existing relays are working, their connection points and connecting wires are generally directly exposed to the outside, so they are easily contaminated with dust. The conductive metal of the connection points and connecting wires is easily exposed to the air for a long time to form an oxide film. The dust and the oxide film will damage the contact between the wires and the connection points of the relay, affecting the use effect of the relay. In serious cases, the electrical appliance will be burned out and cause safety problems. At the same time, since the connection points and wires of the existing relays are often screwed, when the relay is installed next to equipment with a large vibration frequency such as a motor or a pump body, due to the vibration of the electrical equipment, the wires may be pulled due to the vibration, resulting in the wires breaking, or the bolts of the connection points may loosen and fall off, affecting the normal operation of the relay. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a relay that prevents the relay connection from being exposed to the air and prevents the connecting wires from breaking or falling off due to vibration of electrical equipment or other factors.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a relay with anti-loosening, comprising a shell, a relay body arranged in the shell, a plurality of wiring holes are arranged on both sides of the shell, a plurality of wiring holes are arranged in a connection hole cavity, a dustproof mechanism is hinged at the cavity mouth of the connection hole cavity, a wiring copper sheet is also arranged in the connection hole cavity, the wiring copper sheet is electrically connected to the relay body, an anti-loosening interface can be plugged into the wiring hole, the anti-loosening interface comprises a connecting copper sheet, when the anti-loosening interface is plugged into the wiring hole, the connecting copper sheet and the wiring copper sheet abut against each other, an electric wire can be plugged into the anti-loosening interface, when the electric wire is plugged in, the copper wire in the electric wire abuts against the connecting copper sheet, and the electric wire is electrically connected to the relay body through the connecting copper sheet and the wiring copper sheet.

[0006] Furthermore, a through hole communicating with the outside is provided above the connection hole cavity, a button is slidably connected in the through hole, the anti-detachment interface comprises a plug-in shell on which electric wires can be installed, a card block is provided on the right side of the plug-in shell, when the plug-in shell is plugged into the connection hole cavity, the card block is engaged with the bottom of the through hole and conflicts with the bottom of the button, a plug-in cavity is provided in the plug-in shell, the connecting copper sheet is engaged with the right side of the plug-in cavity, one end of the connecting copper sheet passes through the side wall of the plug-in shell and is placed outside, locking cavities are provided at the upper and lower ends of the plug-in cavity, and both of the locking cavities are rotatably connected A ratchet is connected, a locking rod is provided on the wheel surface of the ratchet, and a locking half ring is provided on the top of the locking rod. When the wire interface is fully inserted into the plug-in shell, the locking half rings at the upper and lower ends can be driven by the ratchet to contact each other to form a locking ring. Vertical rods are provided on both sides of the upper and lower shells of the locking cavity, and a driving wheel for locking the ratchet is sleeved on the outer side of the vertical rod. A spiral spring is provided between the driving wheel and the vertical rod, and the two ends of the spiral spring are respectively clamped with the vertical rod and the driving wheel. A pawl is also provided on the wheel surface of the driving wheel, and the pawl is clamped on the ratchet teeth.

[0007] Furthermore, the outer shells of the two locking chambers are both provided with openings, and part of the gear teeth of the driving wheel are placed outside through the openings.

[0008] Furthermore, the dust-proof mechanism includes a support rod fixed at the cavity mouth of the connecting hole cavity, a baffle plate is sleeved on the outer side of the support rod, a spiral spring is provided between the baffle plate and the support rod, two ends of the spiral spring are respectively clamped with the support rod and the baffle plate, a limiting groove is provided under the baffle plate, a limiting block slidably connected is provided in the limiting groove, a spring is provided at the bottom end of the limiting block, two ends of the spring are respectively fixed to the bottom of the limiting block and the bottom of the limiting groove, and when the wiring hole is not working, the limiting block can be pushed by the spring to abut against the outer side of the baffle plate.

[0009] Furthermore, the top of the limit block is designed to be semi-arc shaped.

[0010] Furthermore, anti-slip grooves are provided in the inner ring walls of the two locking half rings, and magnets are provided at the top ends of the two locking half rings.

[0011] Furthermore, a plurality of adjusting knobs are provided at the upper end of the shell, and the plurality of adjusting knobs are connected to the adjusting components of the relay body, and a cover plate is provided at the upper end of the adjusting knobs and the buttons.

[0012] Beneficial effects of the utility model:

[0013] 1. When the relay is not in use, the dust-proof mechanism can seal the wiring hole to prevent the wiring copper sheet from direct contact with the outside world when not in operation, thereby causing problems such as dust contamination or excessive oxidation, affecting the working effect of the relay; at the same time, when the relay is in use, the anti-detachment interface can push the dust-proof mechanism to open the wiring hole to ensure the normal use of the relay; after the anti-detachment interface is pulled out, the dust-proof mechanism will automatically reset and re-seal the wiring hole, thereby ensuring that the relay wiring hole is always in a sealed state to avoid dust contamination or accelerated oxidation.

[0014] 2. Through the setting of the anti-drop interface, the anti-drop interface can be installed at the wire interface. The wire is directly plugged into the wiring hole through the anti-drop interface, which can replace the screw connection between the wire and the wiring hole, thereby avoiding the wire being excessively pulled due to vibration or other factors during the operation of the electrical equipment, resulting in wire breakage or loose screw connection and wire detachment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the utility model;

[0016] Figure 2 It is a longitudinal sectional view of the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the middle anti-drop interface;

[0018] Figure 4 It is a three-dimensional enlarged structural diagram of each component of the anti-detachment interface;

[0019] Figure numerals: 1, housing; 2, relay body; 3, wiring hole; 31, connection hole cavity; 4, dustproof mechanism; 41, support rod; 42, baffle; 43, limit groove; 44, limit block; 45, spring; 5, wiring copper sheet; 6, anti-drop interface; 61, connecting copper sheet; 62, plug-in shell; 621, opening; 63, block; 64, plug-in cavity; 65, locking cavity; 66, ratchet; 661, locking rod; 662, locking half ring; 663, locking ring; 67, vertical rod; 68, driving wheel; 681, pawl; 69, scroll spring; 7, through hole; 8, button; 9, anti-slip pattern; 10, magnet; 11, cover plate; 12, adjustment knob; 13, wire. DETAILED DESCRIPTION

[0020] 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.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a point connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Reference Figure 1-4 , the working principle of this embodiment:

[0023] Anti-slip function:

[0024] Before the wire 13 is connected to the relay, the anti-drop interface 6 needs to be installed. The wire 13 can be directly plugged into the rear end of the plug-in shell 62 for installation. During the plug-in process of the wire 13, the ratchet wheels 66 on the upper and lower sides will be pushed to rotate. When the ratchet wheels 66 rotate, the locking rods 661 will be driven to clamp into the cavity. When the interface of the wire 13 is fully inserted, the locking rods 661 on both sides will abut against each other and completely clamp on the outside of the wire 13 to lock the position of the wire 13. At the same time, the pawls 681 on both sides of the ratchet wheel 66 can also abut against the teeth of the ratchet wheel 66 at all times to prevent it from reversing. The combination of the two can complete the installation of the anti-drop mechanism. Subsequently, only the anti-drop interface 6 needs to be inserted into the wiring hole 3, and the plug-in shell 62 will press down the limit block 44 and push the baffle 42 inward to open the wiring hole 3, until When the connecting copper sheet 61 abuts against the wiring copper sheet 5, the clamping block 63 will be clamped in the through hole 7 to form a limit and push the button 8 upward, thereby preventing the wire 13 from being excessively pulled due to the vibration of the electrical equipment or other factors during operation, resulting in the wire 13 being broken or the screw connection being loose and the wire 13 being detached, so as to ensure the normal operation of the relay; at the same time, when the user removes the anti-detachment interface 6, he only needs to press the button 8 downward to release the clamping, and then pull out the anti-detachment interface 6 to remove it. At the same time, when the anti-detachment interface 6 needs to be removed, the user only needs to turn the driving wheels 68 at the upper and lower ends outward, and the driving wheels 68 can release the locking rod 661 to release the clamping limit of the wire 13, and then the wire 13 can be pulled out, which is convenient for the user to disassemble and use it again.

[0025] Dust-proof function:

[0026] When the relay is not in use, the baffle 42 can always abut against the side wall of the limit block 44, thereby blocking the connection hole cavity 31; after the anti-detachment interface 6 is pulled out, the spiral spring 69 will push the baffle 42 to begin to expand outward and restore, and at the same time will also push the limit to rise and again abut against the side wall of the baffle 42, thereby ensuring that the relay wiring hole 3 is always in a sealed state, further reducing the contact between the wiring hole 3 and the outside world, and avoiding dust contamination or accelerated oxidation.

[0027] Reference Figure 2 As a specific embodiment of the improvement, this anti-offline relay includes a shell 1, a relay body 2 provided in the shell 1, a plurality of wiring holes 3 are provided on both sides of the shell 1, a plurality of wiring holes 3 are provided in the wiring holes 3, a dustproof mechanism 4 is hinged at the cavity mouth of the wiring hole cavity 31, a wiring copper sheet 5 is also provided in the wiring hole cavity 31, the wiring copper sheet 5 is electrically connected to the interface of the relay body 2, an anti-offline interface 6 can be plugged into the wiring hole 3, the anti-offline interface 6 includes a connecting copper sheet 61, when the anti-offline interface 6 is plugged into the wiring hole 3, the connecting copper sheet 61 and the wiring copper sheet 5 abut against each other, the anti-offline interface 6 can be plugged into the wire 13, when the wire 13 is plugged, the copper wire in the wire 13 abuts against the connecting copper sheet 61, and the wire 13 is electrically connected to the wiring copper sheet 5 through the connecting copper sheet 61.

[0028] By setting the dustproof mechanism 4, when the relay is not in use, the dustproof mechanism 4 can block the connection hole cavity 31 of the wiring hole 3, thereby realizing the sealing of the connection hole cavity 31, so as to prevent the wiring copper sheet 5 from directly contacting the outside world so as to cause the copper sheet to be contaminated with dust or excessive oxidation; when the relay is plugged into the anti-detachment interface 6, the anti-detachment interface 6 can push the baffle 42 of the dustproof mechanism 4, so as to open the wiring hole 3, so as to ensure the normal use of the relay; after the anti-detachment interface 6 is pulled out, the baffle 42 of the dustproof mechanism 4 will automatically reset and re-close the wiring hole 3, so as to ensure that the inside of the relay wiring hole 3 is always in a sealed state, so as to avoid dust contamination or accelerated oxidation.

[0029] By setting the anti-detachment interface 6, the anti-detachment interface 6 can be directly installed at the interface of the wire 13, and the connecting copper sheet 61 in the anti-detachment interface 6 is connected to the wiring copper sheet 5 to replace the screw connection between the wire 13 and the wiring hole 3, thereby avoiding the wire 13 from being excessively pulled due to vibration or other factors during the operation of the electrical equipment, resulting in the wire 13 being broken or the screw connection being loose and the wire 13 being detached.

[0030] Reference Figures 2 to 4As an improved specific implementation, a through hole 7 communicating with the outside is provided above the connection hole cavity 31, and a button 8 is slidably connected in the through hole 7. The anti-drop interface 6 includes a plug-in shell 62 for installing the wire 13, and a block 63 is provided on the right side of the plug-in shell 62. When the plug-in shell 62 is plugged into the connection hole cavity 31, the block 63 is engaged with the bottom of the through hole 7 and conflicts with the bottom of the button 8. A plug-in cavity 64 is provided in the plug-in shell 62, and the connecting copper sheet 61 is engaged with the right side of the plug-in cavity 64. One end of the connecting copper sheet 61 passes through the side wall of the plug-in shell 62 and is placed outside. Locking cavities 65 are provided at both ends of the plug-in cavity 64, and ratchets are rotatably connected in the two locking cavities 65. 66, a locking rod 661 is provided on the wheel surface of the ratchet 66, and a locking half ring 662 is provided on the top of the locking rod 661. When the interface of the wire 13 is fully inserted into the plug-in shell 62, the locking half rings 662 at the upper and lower ends can be driven by the ratchet 66 to contact each other to form a locking ring 663. Both sides of the upper and lower shells 1 of the locking cavity 65 are provided with vertical rods 67, and the outer side of the vertical rod 67 is provided with a driving wheel 68 for locking the ratchet 66. A volute spring 69 is provided between the driving wheel 68 and the vertical rod 67, and the two ends of the volute spring 69 are respectively clamped with the vertical rod 67 and the driving wheel 68. A pawl 681 is also provided on the wheel surface of the driving wheel 68, and the pawl 681 is clamped with the ratchet 66 teeth.

[0031] Before the wire 13 is connected to the relay, the anti-drop interface 6 needs to be installed. The wire 13 is inserted into the plug-in cavity 64 through the rear end of the plug-in shell 62. During the plug-in process of the wire 13, the ratchet wheels 66 at the upper and lower ends of the plug-in cavity 64 will be driven to rotate. The rotation of the ratchet wheel 66 will drive the locking rod 661 on its wheel surface to clamp into the cavity. When the interface of the wire 13 and the connecting copper sheet 61 conflict with each other, the locking rods 661 on the upper and lower sides will be completely clamped on the outside of the wire 13 to lock the position of the wire 13. At the same time, the elastic force of the spiral spring 69 will push the ratchet 681 to the ratchet. The wheel 66 is locked in one direction, thereby preventing the ratchet wheel 66 from reversing due to other factors and causing the clamping to loosen, affecting the fixing effect of the wire 13; after the anti-detachment interface 6 is installed, the user only needs to insert the anti-detachment interface 6 along the connection hole cavity 31 to push the dustproof mechanism 4 open, and when the connecting copper sheet 61 of the anti-detachment interface 6 abuts against the wiring copper sheet 5, the block 63 on the plug-in shell 62 will be engaged in the through hole 7 to form a limit and push the button 8 upward. When the user removes the anti-detachment interface 6, he only needs to press the button 8 downward to release the engagement, and then pull out the anti-detachment interface 6 to remove it.

[0032] The anti-detachment interface 6 can replace the screw connection between the wire 13 and the wiring hole 3, so as to prevent the wire 13 from being excessively pulled due to vibration or other factors during the operation of the electrical equipment, resulting in the wire 13 being broken or the screw connection being loose, thereby affecting the normal operation of the relay;

[0033] Through the arrangement of the pawl 681 and the spiral spring 69, the pawl 681 can always abut against the ratchet 66 to prevent it from rotating. At the same time, when the anti-detachment interface 6 needs to be disassembled, the user only needs to rotate the driving wheels 68 at the upper and lower ends outward, and the driving wheels 68 can drive the pawl 681 to release the one-way lock on the ratchet 66, so that the locking rods 661 on both sides release the clamping limit of the wire 13. At this time, the wire 13 can be pulled out, which is convenient for the user to disassemble and use it again.

[0034] Reference Figure 3 and Figure 4 As an improved specific implementation, openings 621 are provided at the outer sides of the two locking chambers 65 at the shell 1 , and part of the gear teeth of the driving wheel 68 are placed outside through the openings 621 .

[0035] Through the setting of the opening 621, the user can directly control the unlocking and locking of the anti-drop interface 6 through manual friction of the driving wheel 68, that is, through the ratchet 681, which is convenient for the user to operate.

[0036] Reference Figure 2 and Figure 3 As an improved specific implementation method, the dustproof mechanism 4 includes a support rod 41 fixed at the cavity mouth of the connection hole cavity 31, a baffle 42 is sleeved on the outside of the support rod 41, a volute spring 69 is provided between the baffle 42 and the support rod 41, and the two ends of the volute spring 69 are respectively clamped with the support rod 41 and the baffle 42, a limiting groove 43 is provided below the baffle 42, a limiting block 44 with a sliding connection is provided in the limiting groove 43, a spring 45 is provided at the bottom end of the limiting block 44, and the two ends of the spring 45 are respectively fixed to the bottom of the limiting block 44 and the bottom of the limiting groove 43, and when the wiring hole 3 is not working, the limiting block 44 can be pushed by the spring 45 to abut against the outside of the baffle 42.

[0037] By setting the dustproof mechanism 4, when the relay is not in use, the baffle 42 is expanded outward by the elastic force of the volute spring 69 to abut against the side wall of the limit block 44, thereby achieving the blocking of the connection hole cavity 31, preventing the wiring copper sheet 5 from directly contacting the outside world and causing dust or excessive oxidation. When the relay is plugged into the anti-detachment interface 6, the plug-in shell 62 will press down the limit block 44, so that the limit block 44 is placed in the limit groove 43, and at the same time, the plug-in shell 62 will push the baffle 42 inward until the connecting copper sheet 61 abuts against the wiring copper sheet 5. At this time, the plug-in shell 62 will be stuck under the through hole 7 to form a fixed position, thereby ensuring the normal use of the relay; after the plug-in shell 62 is pulled out, the volute spring 69 will push the baffle 42 to start to expand outward and recover, and at the same time, the spring 45 will also push the limit block 44 to rise along the limit groove 43 and re-contact the side wall of the baffle 42, thereby ensuring that the relay wiring hole 3 is always in a sealed state to avoid dust or accelerated oxidation.

[0038] Reference Figure 2 As an improved specific implementation, the top of the limit block 44 is designed to be semi-arc shaped.

[0039] By setting the top of the limit block 44 as a semi-arc design, when the wire 13 is plugged into the anti-detachment interface 6 and the wire 13 presses down the limit block 44, the limit block 44 can be prevented from scratching the wire 13 and causing damage to the protective layer of the wire 13, thereby affecting the normal operation of the wire 13.

[0040] Reference Figure 4 As an improved specific implementation, anti-slip grooves 9 are provided in the inner ring walls of the two locking half rings 662, and magnets 10 are provided at the tops of the two locking half rings 662.

[0041] By setting the anti-slip pattern 9, the friction between the two locking half rings 662 and the wire 13 when they are closed and abut against the outside of the wire 13 can be increased to improve the anti-slip effect. At the same time, the setting of the two magnets 10 can strengthen the closing effect of the two locking half rings 662, further strengthen the locking between the locking half rings 662 and the wire 13, and further improve the anti-slip effect.

[0042] Reference Figure 1 As an improved specific implementation, a plurality of adjusting knobs 12 are provided at the upper end of the housing 1, and the plurality of adjusting knobs 12 are connected to the adjusting components of the relay body 2, and a cover plate 11 is provided at the upper end of the adjusting knobs 12 and the button 8.

[0043] Through the provision of a plurality of adjusting knobs 12, the user can adjust the relay output through the adjusting knobs 12 for easy operation. Meanwhile, the provision of the cover plate 11 can prevent the adjusting knobs 12 from being accidentally touched, thereby affecting the normal operation of the relay.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A relay for preventing disconnection, comprising a housing (1), a relay body (2) arranged in the housing (1), and a plurality of wiring holes (3) arranged on both sides of the housing (1), characterized in that: A plurality of the wiring holes (3) are provided with a connection hole cavity (31), a dustproof mechanism (4) is hinged at the cavity opening of the connection hole cavity (31), a connection copper sheet (5) is also provided in the connection hole cavity (31), the connection copper sheet (5) is electrically connected to the interface of the relay body (2), an anti-detachment interface (6) can be plugged into the wiring hole (3), the anti-detachment interface (6) includes a connecting copper sheet (61), when the anti-detachment interface (6) is plugged into the wiring hole (3), the connecting copper sheet (61) and the connection copper sheet (5) abut against each other, an electric wire (13) can be plugged into the anti-detachment interface (6), when the electric wire (13) is plugged, the copper wire in the electric wire (13) abuts against the connecting copper sheet (61), The electric wire (13) is electrically connected to the wiring copper sheet (5) through the connecting copper sheet (61); a through hole (7) which is conductive to the outside is provided above the connection hole cavity (31); a button (8) is slidably connected in the through hole (7); the anti-detachment interface (6) comprises a plug-in shell (62) on which the electric wire (13) can be installed; a card block (63) is provided on the right side of the plug-in shell (62); when the plug-in shell (62) is plugged into the connection hole cavity (31), the card block (63) is plugged into the bottom of the through hole (7) and contacts the bottom of the button (8); a plug-in cavity (64) is provided in the plug-in shell (62); the connecting copper sheet (61) is plugged into the right side of the plug-in cavity (64 ... 1) one end of the plug-in shell (62) is inserted through the side wall and placed outside, the plug-in shell (64) is provided with a locking cavity (65) at both ends, ratchets (66) are rotatably connected in both locking cavities (65), a locking rod (661) is provided on the wheel surface of the ratchet (66), and a locking half ring (662) is provided on the top of the locking rod (661). When the interface of the wire (13) is completely plugged into the plug-in shell (62), the locking half rings (662) at the upper and lower ends can be driven by the ratchet (66) to contact each other to form a locking ring (663), and vertical rods (67) are provided on both sides of the upper and lower shells (1) of the locking cavity (65), and the outer side of the vertical rod (67) is provided with a locking ratchet (66) for locking. 66), a spiral spring (69) is provided between the driving wheel (68) and the vertical rod (67), the two ends of the spiral spring (69) are respectively clamped with the vertical rod (67) and the driving wheel (68), a pawl (681) is also provided on the wheel surface of the driving wheel (68), the pawl (681) is clamped with the gear teeth of the ratchet wheel (66), the outer shell (1) of the two locking chambers (65) are provided with an opening (621), part of the gear teeth of the driving wheel (68) are placed outside through the opening (621), the inner ring wall of the two locking half rings (662) is provided with anti-slip grooves (9), and the top of the two locking half rings (662) is provided with a magnet (10).

2. The anti-offline relay according to claim 1, characterized in that: The dustproof mechanism (4) comprises a support rod (41) fixed at the cavity opening of the connection hole cavity (31); a baffle plate (42) is sleeved on the outer side of the support rod (41); a volute spring (69) is arranged between the baffle plate (42) and the support rod (41); two ends of the volute spring (69) are respectively clamped with the support rod (41) and the baffle plate (42); a limiting groove (43) is arranged below the baffle plate (42); a limiting block (44) slidably connected is arranged in the limiting groove (43); a spring (45) is arranged at the bottom end of the limiting block (44); two ends of the spring (45) are respectively fixed to the bottom of the limiting block (44) and the bottom of the limiting groove (43); when the wiring hole (3) is not working, the limiting block (44) can be pushed by the spring (45) to abut against the outer side of the baffle plate (42).

3. The anti-offline relay according to claim 2, characterized in that: The top end of the limiting block (44) is designed to be semi-arc shaped.

4. The relay for preventing disconnection according to claim 1, characterized in that: A plurality of adjusting knobs (12) are provided at the upper end of the housing (1), and the plurality of adjusting knobs (12) are connected to the adjusting components of the relay body (2). Cover plates are provided at the upper ends of the adjusting knobs (12) and the buttons (8).

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