Relay protection device

Abstract

The utility model provides a relay protection device, which relates to the field of relays and comprises a covering part used for covering a relay adjusting hole, the covering part is fixedly connected with a relay through a connecting part, and the covering part is inserted into the adjusting hole of the relay. The covering part integrally covers the adjusting holes in the same side of the relay, the relay is provided with a plug hole, and the connecting part is provided with a clamping part clamped in the plug hole. A sealing ring is arranged on the edge of the covering part; and a sealing groove for inserting the sealing ring is formed in the outer ring of the adjusting hole of the relay. According to the relay protection device, the arranged covering part is lifted, and the connection between the connecting part and the clamping part and the relay is kept, so that the adjusting hole can be exposed, the adjusting hole can be adjusted, and after adjustment is completed, the covering part is extruded, so that the sealing ring and the sealing groove can be clamped to complete covering of the adjusting hole; therefore, the relay can be protected.

Description

Technical Field

[0001] This utility model relates to the field of relay technology, specifically to a relay protection device. Background Technology

[0002] A relay is an electrical device that connects or disconnects a small-current control circuit based on changes in electrical or non-electrical quantities to achieve automatic control or protection of electrically driven devices. Relays primarily operate on the principle of electromagnetic induction. Internally, they generally consist of an iron core, coil, armature, and contact springs. When a certain voltage is applied across the coil, current flows through it, generating an electromagnetic effect. The armature, attracted by the electromagnetic force, overcomes the return spring's pull and is drawn towards the iron core, causing the moving contact of the armature to engage with the stationary contact (normally open contact), thus connecting the circuit. When the coil is de-energized, the electromagnetic attraction disappears, and the armature returns to its original position under the spring's reaction force, causing the moving contact to engage with the original stationary contact (normally closed contact), thus disconnecting the circuit.

[0003] Existing relays typically require at least four contacts: control positive and negative terminals and output positive and negative terminals. The contacts and wires are usually connected by a rotating threaded head that presses and fixes the wires to the surface of a metal conductive sheet. However, the threaded head is prone to oxidation and corrosion when exposed to air, and may eventually become unable to rotate. To avoid this, a device is needed to protect the relay. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a relay protection device that solves the problem of threaded pressure heads lacking protection and easily oxidizing, as mentioned in the background technology.

[0005] Technical solution

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a relay protection device, including a cover for covering the adjustment hole of a relay, wherein the cover is fixedly connected to the relay through a connecting part, and the cover is inserted into the adjustment hole of the relay.

[0007] Furthermore, the covering part completely covers the adjustment hole on the same side of the relay, the relay has a plug hole, and the connecting part is provided with a snap-fit ​​part that snaps into the plug hole.

[0008] Furthermore, a sealing ring is provided on the edge of the cover, and a sealing groove for inserting the sealing ring is provided on the outer ring of the relay located at the adjustment hole.

[0009] Furthermore, the cross-sectional shape of the sealing ring is "teardrop-shaped", and the shape of the sealing groove is adapted to the shape of the sealing ring.

[0010] Furthermore, the covering part individually covers each adjustment hole, the cross-sectional shape of the adjustment hole is a stepped hole, and sealing rings are provided on both sides of the bottom end of the covering part, the sealing rings are engaged inside the stepped hole.

[0011] Furthermore, there are at least two connecting parts, and the cover part is fixed to the surface of the relay by the connecting parts. The surface of the cover part has a groove that penetrates the cover part and is aligned with the adjustment hole.

[0012] Furthermore, the surface of the cover portion is provided with a protrusion above the groove, and the protrusion is divided together with the groove.

[0013] Furthermore, the covering, connecting part, and snap-fit ​​part are all made of rubber.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. This relay protection device, by lifting the cover while keeping the connecting part and the snap-fit ​​part connected to the relay, can expose the adjustment hole, thereby allowing adjustment of the adjustment hole. After adjustment, by squeezing the cover, the adjustment hole can be covered by the sealing ring and the sealing groove, thus protecting the relay.

[0016] 2. The relay protection device is fixed to the surface of the relay by the connecting part through the set cover part. The surface of the cover part has a through-cut groove that is aligned with the adjustment hole. With this setting, the adjustment hole can be protected by the cover part, so that the screwdriver can be directly rotated and adjusted by passing through the groove. After the screwdriver is pulled out, it can automatically reset to form a seal to protect the relay. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection of the covering part of this utility model;

[0019] Figure 3 This is a schematic diagram of the groove connection of this utility model;

[0020] Figure 4 This is a schematic diagram of the sealing groove connection of this utility model;

[0021] Figure 5 This is a schematic diagram of the plug-in hole connection of this utility model.

[0022] Among them, 1. Cover part; 2. Connecting part; 3. Insertion hole; 4. Snap-fit ​​part; 5. Sealing ring; 6. Sealing groove; 7. Sealing ring; 8. Cut groove; 9. Protrusion. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] See Figures 1-5 A relay protection device includes a cover 1 for covering the adjustment hole of a relay. The cover 1 is fixedly connected to the relay via a connecting part 2, and the cover 1 is inserted into the adjustment hole of the relay.

[0025] The cover 1 completely covers the adjustment hole on the same side of the relay. The relay has a plug hole 3, and the connecting part 2 has a snap-fit ​​part 4 that engages inside the plug hole 3. The cover 1, connecting part 2, and snap-fit ​​part 4 are all made of rubber, which facilitates installation. By pressing the snap-fit ​​part 4 into the plug hole 3, the connecting part 2 and the relay can be connected more easily.

[0026] Specifically, a sealing ring 5 is provided on the edge of the cover part 1, and a sealing groove 6 for inserting the sealing ring 5 is provided on the outer ring of the relay at the adjustment hole. This arrangement can lock the cover part 1 in place, thereby protecting the adjusting thread pressure head.

[0027] Specifically, the cross-sectional shape of the sealing ring 5 is "teardrop-shaped", and the shape of the sealing groove 6 is adapted to the shape of the sealing ring 5. This setting allows the sealing ring 5 to be pressed and snapped into the inside of the sealing groove 6.

[0028] In use, lift the cover 1 while keeping the connecting part 2 and the snap-fit ​​part 4 connected to the relay, so that the adjustment hole can be exposed and adjusted. After adjustment, by squeezing the cover 1, the sealing ring 5 and the sealing groove 6 can be snapped together to cover the adjustment hole, thereby protecting the relay.

[0029] In Example 2, each adjustment hole is individually covered by a cover 1. The adjustment hole has a stepped cross-sectional shape, and sealing rings 7 are provided on both sides of the bottom end of the cover 1. The sealing rings 7 are engaged inside the stepped holes. This arrangement allows a single cover 1 to be opened for adjustment when a single threaded pressure head needs to be adjusted, thus reducing the opening time of adjacent cover 1s.

[0030] In use, the cover 1 of the corresponding adjustment hole is removed so that the specified adjustment hole can be adjusted. After adjustment, the cover 1 is pressed to form a seal with the adjustment hole through the sealing ring 7, thereby protecting the relay.

[0031] In embodiment 3, there are at least two connecting parts 2. The covering part 1 is fixed to the surface of the relay by the connecting parts 2. The surface of the covering part 1 is provided with a groove 8 that penetrates the covering part 1. The groove 8 is aligned with the adjustment hole. With this arrangement, the covering part 1 can protect the adjustment hole, so that the screwdriver can be directly inserted through the groove 8 for rotation and adjustment. After the screwdriver is pulled out, it can automatically reset to form a seal.

[0032] Specifically, the surface of the covering part 1 is provided with a protrusion 9 above the groove 8. The protrusion 9 is divided together with the groove 8. By providing the protrusion 9, they can be pressed against each other to maintain the seal of the groove 8.

[0033] In use, the connecting part 2 and the snap-fit ​​part 4 cover the relay surface with the covering part 1. When in use, the adjusting screwdriver is rotated from the slot 8 for adjustment. After the screwdriver is pulled out, it can automatically reset to form a seal, thereby protecting the relay.

[0034] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A relay protection device comprising a cover (1) for covering a relay adjustment hole, characterized in that: The covering part (1) is fixedly connected with the relay through the connecting part (2), and the covering part (1) is inserted into the adjusting hole of the relay.

2. A protective relay according to claim 1, characterised in that: The covering part (1) covers the adjusting holes on the same side of the relay, the relay is provided with an inserting hole (3), and the connecting part (2) is provided with a clamping part (4) clamped in the inserting hole (3).

3. A protective relay according to claim 2, characterised in that: The edge of the covering part (1) is provided with a sealing ring (5), and the outer ring of the adjusting hole of the relay is provided with a sealing groove (6) for inserting the sealing ring (5).

4. A protective relay according to claim 3, characterised in that: The cross-sectional shape of the sealing ring (5) is "water drop shape", and the shape of the sealing groove (6) is matched with the shape of the sealing ring (5).

5. A protective relay according to claim 1, characterized in that: The covering part (1) covers each adjusting hole separately, the cross-sectional shape of the adjusting hole is a stepped hole, the bottom end of the covering part (1) is provided with a sealing ring (7), and the sealing ring (7) is clamped in the inside of the stepped hole.

6. A protective device according to claim 2 or 5, characterised in that: The connecting part (2) is at least two, the covering part (1) is fixed on the surface of the relay by the connecting part (2), the surface of the covering part (1) is provided with a cutting groove (8) penetrating through the covering part (1), and the cutting groove (8) is aligned with the adjusting hole.

7. A protective relay according to claim 6, characterised in that: The surface of the covering part (1) is provided with a protrusion (9) above the cutting groove (8), and the protrusion (9) is divided together with the cutting groove (8).

8. A protective device according to claim 7, characterised in that: The material of the covering part (1), the connecting part (2) and the clamping part (4) is rubber.

Images