Damp-proof detection relay

Abstract

The utility model discloses a moistureproof detection relay comprising a housing, and the interior of the housing is provided with a detection mechanism. The detection mechanism comprises a coil installed at the side end in the shell, a straight contact piece and an arc contact piece, the straight contact piece and the arc contact piece are installed in the middle in the shell in a penetrating mode, an armature piece is obliquely fixed to the top of the arc contact piece, a pressing rod is slidably installed at the side end of the top of the shell, a guide piece is fixed to the bottom of the pressing rod, and a drying bag is placed at the top of the pressing rod. The moisture-proof detection relay device disclosed by the utility model is provided with the guide sheet structure, along with the increase of air humidity, the weight of the drying bag adsorbing moisture is increased, and the pressing rod and the guide sheet are pushed to move downwards synchronously and are in contact with the two contact sheets, so that a circuit in the shell is switched on and an alarm is triggered; therefore, a safety officer can obtain feedback in time, dehumidify the environment where the relay is installed and protect other circuit elements around the relay, economic damage is reduced, and practicability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of relays, in particular to a moisture-proof detection relay. Background Art

[0002] A relay is an electrical control device. When the change in input quantity (excitation quantity) reaches the specified requirement, it causes a predetermined step change in the controlled quantity in the electrical output circuit. Relays are usually used in automated control circuits. In fact, it is an "automatic switch" that uses a small current to control a large current. Therefore, it plays the role of automatic adjustment, safety protection, and circuit conversion in the circuit.

[0003] The equipment that uses relays the most is usually the distribution cabinet. Depending on the purpose, the installation environment of the distribution cabinet will also change. When the distribution cabinet is used in the field, it will be affected by the humid environment for a long time, and the circuit components inside the distribution cabinet will have problems such as leakage damage. By the time the safety personnel find that the circuit components are damaged and the relay is powered off for protection, it is too late. The existing relays do not have the ability to autonomously detect the ambient humidity, and their functions are limited when used. Utility Model Content

[0004] The utility model discloses a moisture-proof detection relay, which aims to solve the problem that the existing relays do not have the ability to detect environmental humidity autonomously and have limited functions when in use.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A moisture-proof detection relay comprises a shell, wherein a detection mechanism is arranged inside the shell; the detection mechanism comprises a coil installed on the side end inside the shell, a first straight contact piece and a second straight contact piece installed through the middle of the shell, a first arc contact piece and a second arc contact piece installed through the other side of the shell, the first straight contact piece and the second straight contact piece are symmetrically distributed in the horizontal direction, the first arc contact piece and the second arc contact piece are mirror-symmetrically distributed in the horizontal direction, an armature piece is obliquely fixed on the top of the second arc contact piece, a pressure rod is slidably installed on the side end of the top of the shell, a guide piece is fixed on the bottom of the pressure rod, the guide piece is distributed between the second straight contact piece and the second arc contact piece, and a drying bag is placed on the top of the pressure rod.

[0007] By providing a guide vane structure driven by gravity, as the air humidity increases, the weight of the desiccant bag adsorbing moisture increases and pushes the pressure rod, which drives the guide vane at its bottom to move downward synchronously and come into contact with two contact pieces, thereby connecting the circuit inside the shell and triggering an alarm, so that the safety officer can get feedback and cut off the power in time, dehumidify the environment where the relay is installed, and protect other circuit components around the relay in time.

[0008] In a preferred solution, a hollow tube is installed through the top side end of the shell, the pressure rod is slidably distributed inside the hollow tube, and a card cover is installed on the top of the hollow tube.

[0009] The drying bag is limited by providing a hollow tube and a card cover structure, and the hollow structure will not affect the drying bag's absorption of moisture in the environment, thereby ensuring the integrity of the device during use.

[0010] In a preferred solution, the pressure rod and the armature plate are both made of non-conductive silicone material.

[0011] By setting the pressure rod and the armature sheet to be made of silicone material, the relay will not leak electricity through the armature sheet and the two contact sheets will not leak electricity through the pressure rod, further ensuring the stability and safety of the device during operation.

[0012] In a preferred solution, a pull cord is fixed to the top of the drying bag, and the pull cord passes through the top of the card cover.

[0013] By providing an exposed pull-wire structure, when the user needs to replace the desiccant bag, the user only needs to pull the pull-wire to remove the desiccant bag, making the device more convenient to use.

[0014] As can be seen from the above, the moisture-proof detection relay provided by the utility model has the following improvements and effects compared with the prior art:

[0015] By providing a guide vane structure driven by gravity, as the air humidity increases, the weight of the desiccant bag adsorbing moisture increases and pushes the pressure rod, and the pressure rod drives the guide vane at its bottom to move downward synchronously and come into contact with two contact pieces, thereby connecting the circuit inside the shell and triggering an alarm, so that the safety officer can get feedback and cut off the power in time, dehumidifying the environment where the relay is installed, and protecting other circuit components around the relay in time, reducing economic damage and increasing practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a moisture-proof detection relay proposed by the present invention.

[0017] Figure 2 This is a structural cross-sectional view of a moisture-proof detection relay proposed by the utility model.

[0018] Figure 3 A moisture-proof detection relay proposed by the utility model Figure 2 A magnified view of the structure at center.

[0019] Figure 4This is an exploded view of the structure surrounding the hollow tube of a moisture-proof detection relay proposed by the utility model.

[0020] In the accompanying drawings: 1. Shell; 2. Detection mechanism; 201. Coil; 202. First straight contact piece; 203. First arc contact piece; 204. Second straight contact piece; 205. Second arc contact piece; 206. Armature piece; 207. Pressure rod; 208. Guide piece; 209. Drying bag; 210. Spring; 211. Pull wire; 3. Hollow tube; 4. Card cover; 5. Protective frame. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 should not be understood as a limitation on the present invention.

[0023] The utility model discloses a moisture-proof detection relay which is mainly used in the scenario of circuit protection in a humid environment.

[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A moisture-proof detection relay comprises a shell 1, wherein a detection mechanism 2 is arranged inside the shell 1; the detection mechanism 2 comprises a coil 201 installed at the side end inside the shell 1, a first straight contact piece 202 and a second straight contact piece 204 installed through the middle of the shell 1, a first arc contact piece 203 and a second arc contact piece 205 installed through the other side of the shell 1, the first straight contact piece 202 and the second straight contact piece 204 are symmetrically distributed in the horizontal direction, the first arc contact piece 203 and the second arc contact piece 205 are mirror-symmetrically distributed in the horizontal direction, an armature piece 206 is obliquely fixed on the top of the second arc contact piece 205, a pressure rod 207 is slidably installed on the top side end of the shell 1, a guide piece 208 is fixed on the bottom of the pressure rod 207, the guide piece 208 is distributed between the second straight contact piece 204 and the second arc contact piece 205, and a drying bag 209 is placed on the top of the pressure rod 207.

[0025] In this embodiment: the user installs the housing 1 inside the power distribution cabinet, wherein the first straight contact piece 202 and the first arc contact piece 203 are directly connected to other components in the power distribution cabinet for circuit wiring, and the bottom of the second arc contact piece 205 is connected to install the corresponding alarm element. Thereafter, the user controls the coil 201 to be energized, and the coil 201 is energized to generate an electromagnetic field, and acts on the side end of the armature piece 206, pulling the armature piece 206 to move in the direction of the coil 201. When the armature piece 206 is pulled, it drives the first arc contact piece 203 and the second arc contact piece 205 to move synchronously until the first arc contact piece 203 contacts the first straight contact piece 202. At this time, the circuits of other components inside the power distribution cabinet are connected and start to work, while the second arc contact piece 205 and the second straight contact piece 204 There is still a distance between them. As the humidity inside the distribution cabinet increases, the drying bag 209 that has absorbed water vapor moves downward and pushes the pressure rod 207 and the guide piece 208 to move downward synchronously. At this time, the guide piece 208 and the second arc contact piece 205 and the second straight contact piece 204 are "bridged" and connected, and the alarm component connected at the bottom of the second arc contact piece 205 is energized and starts to send an alarm message to the security personnel. After receiving the message, the security personnel will promptly turn off the power to the coil 201, and the armature piece 206, the first arc contact piece 203 and the second arc contact piece 205 that lose the electromagnetic pull will reset and move synchronously, thereby releasing the contact with the first straight contact piece 202 and the second straight contact piece 204, and disconnecting the circuit, and timely protecting other components inside the distribution cabinet, waiting for the subsequent processing by the security personnel.

[0026] It should be additionally explained that the pressure rod 207 and the armature plate 206 are both made of non-conductive silicone material to prevent the relay from leaking electricity when in use.

[0027] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, a hollow tube 3 is installed through the top side end of the shell 1, and the pressure rod 207 is slidably distributed inside the hollow tube 3. A card cover 4 is installed on the top of the hollow tube 3. We protect the drying bag 209 through the hollow tube 3 and the card cover 4 without affecting the contact between the drying bag 209 and moisture in the air.

[0028] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4In a preferred embodiment, a spring 210 is sleeved on the outer side of the pressure rod 207, the bottom of the spring 210 is fixed to the top of the shell 1, and a pull wire 211 is fixed to the top of the drying bag 209, and the pull wire 211 passes through the top of the card cover 4. When the user arrives at the distribution cabinet site, the shell holds the pull wire 211 to pull out the wet drying bag 209. At this time, the pressure rod 207 and the guide plate 208 that lose the gravity squeezing will be pushed by the spring 210 and reset.

[0029] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 In a preferred embodiment, a protective frame 5 is fixed to the top side end of the shell 1, and the protective frame 5 is sleeved on the outside of the hollow tube 3 to protect the hollow tube 3 and prevent the hollow tube 3 from being deformed by impact.

[0030] Working principle: When in use, the user installs the shell 1 inside the distribution cabinet, wherein the first straight contact piece 202 and the first arc contact piece 203 are directly connected to the circuit of other devices in the distribution cabinet, and the bottom of the second arc contact piece 205 is connected to install the corresponding alarm element. Thereafter, the user controls the coil 201 to energize, and pulls the armature piece 206 to move toward the direction of the coil 201. When the armature piece 206 is pulled, it drives the first arc contact piece 203 and the second arc contact piece 205 to move synchronously until the first arc contact piece 203 contacts the first straight contact piece 202. At this time, the circuits of other components inside the distribution cabinet are connected, and there is still a distance between the second arc contact piece 205 and the second straight contact piece 204. As the inside of the distribution cabinet As the humidity increases, the drying bag 209 that has absorbed water vapor moves downward and pushes the pressure rod 207 and the guide piece 208 to move downward synchronously. At this time, the guide piece 208, the second arc contact piece 205, and the second straight contact piece 204 are "bridged" and connected, and the alarm element located at the bottom of the second arc contact piece 205 is energized and starts to send an alarm message to the security personnel. After receiving the message, the security personnel promptly turn off the power to the coil 201, and the armature piece 206, the first arc contact piece 203, and the second arc contact piece 205 that lose the electromagnetic pull are synchronously reset and moved, thereby releasing the contact with the first straight contact piece 202 and the second straight contact piece 204, and disconnecting the entire circuit, and timely protecting other components inside the distribution cabinet, waiting for the subsequent processing by the security personnel.

[0031] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. The replacement can be a replacement of part of the structure, device, method step, or a complete technical solution. Equivalent replacement or change based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A moisture-proof detection relay, comprising a housing (1), characterized in that: A detection mechanism (2) is arranged inside the shell (1); the detection mechanism (2) comprises a coil (201) installed at a side end inside the shell (1), a first straight contact piece (202) and a second straight contact piece (204) installed through the middle of the shell (1), and a first arc contact piece (203) and a second arc contact piece (205) installed through the other side of the shell (1), wherein the first straight contact piece (202) and the second straight contact piece (204) are symmetrically distributed in a horizontal direction, and the first arc contact piece (203) and the second arc contact piece (205) are symmetrically distributed in a horizontal direction. The contact piece (203) and the second arc contact piece (205) are distributed in a mirror-symmetrical manner in the horizontal direction; an armature piece (206) is obliquely fixed on the top of the second arc contact piece (205); a pressure rod (207) is slidably mounted on the top side of the housing (1); a guide piece (208) is fixed on the bottom of the pressure rod (207); the guide piece (208) is distributed between the second straight contact piece (204) and the second arc contact piece (205); and a drying bag (209) is placed on the top of the pressure rod (207).

2. A moisture-proof detection relay according to claim 1, characterized in that: A hollow tube (3) is installed through the top side end of the shell (1), and the pressure rod (207) is slidably distributed inside the hollow tube (3).

3. A moisture-proof detection relay according to claim 1, characterized in that: A spring (210) is sleeved on the outer side of the pressure rod (207), and the bottom of the spring (210) is fixed to the top of the housing (1).

4. A moisture-proof detection relay according to claim 2, characterized in that: A card cover (4) is mounted on the top of the hollow tube (3).

5. A moisture-proof detection relay according to claim 4, characterized in that: A pull cord (211) is fixed to the top of the drying bag (209), and the pull cord (211) passes through the top of the card cover (4).

6. A moisture-proof detection relay according to claim 2, characterized in that: A protective frame (5) is fixed to the top side end of the shell (1), and the protective frame (5) is sleeved on the outside of the hollow tube (3).

7. A moisture-proof detection relay according to claim 1, characterized in that: The pressure rod (207) and the armature plate (206) are both made of non-conductive silicone material.

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