Induction coil with good sealing performance

Abstract

The utility model relates to the field of induction coils, and discloses an induction coil with good sealing performance, which comprises a coil main body, a lower sealing shell and a shell cover, the coil main body is arranged in a middle annular cavity, a lead of the coil main body passes through an outer annular plate and the outer wall side surface of the lower sealing shell, and a coil supporting piece is arranged in the middle annular cavity. A plurality of inserting grooves are evenly formed in the upper portions of the inner side walls and the outer side walls of the two annular plates respectively, epoxy resin glue is poured into an annular cavity in the middle, the position of the upper plane of the epoxy resin glue after pouring is located on the lower portions of the inserting grooves, and an annular groove is formed in the upper portion of the side face of the outer wall of the lower sealing shell. The coil supporting piece comprises a plurality of supporting columns arranged at the bottom of the middle annular cavity in the circumferential direction, clamping frames are arranged above the supporting columns and are in a U shape, the coil body is clamped on the multiple clamping frames, the clamping frames are not in contact with a wire of the coil body, and the induction coil can be sealed and protected.

Description

Technical Field

[0001] The utility model relates to the technical field of induction coils, and particularly relates to an induction coil with good sealing performance. Background Technique

[0002] An inductive device is a device that works based on the principle of electromagnetic induction. When an electric current flows through a wire, a certain electromagnetic field will be generated around this wire, and this electromagnetic field will in turn have an inductive effect on the wire within the range of this electromagnetic field, which is called self-inductance. Contrary to the function of a capacitor, it conducts low-frequency currents and blocks high-frequency currents, and is commonly used for overclock protection of circuits.

[0003] Generally, when an induction coil is in use, the coil is usually exposed in the environment, and external substances such as water and electrolyte enter the inside of the coil, which easily causes the coil to be damp, corroded, and damaged. Therefore, when using an induction coil in a special environment, it is necessary to seal and protect the induction coil. Therefore, we propose an induction coil with good sealing performance. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an induction coil with good sealing performance, which solves the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: The utility model discloses an induction coil with good sealing performance, which includes a coil body, a lower sealing shell, and a shell cover. Two ring plates are concentrically arranged inside the lower sealing shell, and the two ring plates form three ring cavities in the lower sealing shell. The coil body is arranged in the middle ring cavity. The lead wire of the coil body passes through the outer ring plate and the outer wall side of the lower sealing shell. A coil support is arranged in the middle ring cavity. A plurality of slots are respectively and evenly opened above the inner and outer side walls of the two ring plates. Epoxy resin glue is potted in the middle ring cavity. After potting, the upper plane position of the epoxy resin glue is located below the slots. A ring groove is opened in the upper part of the outer wall side of the lower sealing shell, and a sealing mechanism is arranged on the shell cover.

[0006] As a preferred solution, the coil support includes a plurality of columns circumferentially arranged at the bottom of the middle ring cavity. A clamping frame is arranged above the columns. The clamping frame is in a U shape. The coil body is placed on the plurality of clamping frames, and the clamping frame does not contact the wire of the coil body.

[0007] As a preferred solution, the sealing mechanism includes a group of sealing grooves arranged at the bottom of the shell cover. The group of sealing grooves are respectively adapted to the two ring plates. A plurality of insertion plates are respectively arranged on the inner side walls of the sealing grooves. The corresponding plurality of insertion plates are respectively inserted and combined with the slots.

[0008] As a preferred solution, an outer sealing ring is provided at the bottom of the shell cover. The outer sealing ring is adapted to the outer wall side of the lower sealing shell. There are corrugations on the inner side of the outer sealing ring, and the corrugations are clamped in the ring groove. A plurality of abutting pieces are evenly arranged at the bottom of the shell cover, and the plurality of abutting pieces are respectively attached to the outer side of the outer sealing ring.

[0009] As a preferred solution, an inner sealing ring is provided at the bottom of the shell cover. The inner sealing ring is adapted to the inner wall side of the lower sealing shell, and a cushion layer is provided on the inner wall of the inner sealing ring.

[0010] As a preferred solution, a set of lifting rings is provided above the shell cover, and water-absorbing silica gel packets are arranged in the inner and outer ring cavities.

[0011] Compared with the prior art, the present utility model has the following beneficial effects:

[0012] In the present utility model, by arranging a coil support member in the middle ring cavity, the coil body in the middle ring cavity is supported and clamped, and the lower part of the coil body is lifted, so that the potting epoxy resin glue can be in full contact with the coil body, thereby sealing the coil body. The upper plane position of the epoxy resin glue after potting is located below the slot, avoiding affecting the closing of the lower sealing shell and the shell cover.

[0013] Through the structural arrangement of the sealing mechanism, the sealing grooves are respectively engaged with the corresponding ring plates, and the corresponding plurality of insertion plates are respectively inserted into the slots, improving the sealing effect on the middle ring cavity. By clamping the corrugations in the ring grooves and using the abutting pieces to assist in supporting the outer sealing ring, the corrugations are tightly attached to the ring grooves, thereby improving the sealing effect of the outer sealing ring on the outer wall of the lower sealing shell. By fitting the inner sealing ring with the inner wall of the lower sealing shell, the inner sealing ring seals the inner wall of the lower sealing shell.

[0014] By arranging water-absorbing silica gel packets in the inner and outer ring cavities, the humid air entering the lower sealing shell and the shell cover can be dehumidified. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0016] Figure 2 is Figure 1 the enlarged view of part A in

[0017] Figure 3 is a structural schematic diagram of the lower sealing shell after potting the epoxy resin glue;

[0018] Figure 4 is a structural schematic diagram without the coil body;

[0019] Figure 5 It is a three-dimensional structure diagram of the shell cover.

[0020] In the figure: 1. Coil body; 2. Lower sealing shell; 3. Shell cover; 4. Ring plate; 5. Ring cavity; 6. Slot; 7. Epoxy resin glue; 8. Ring groove; 9. Support pillar; 10. Clamping frame; 11. Sealing groove; 12. Insertion plate; 13. Outer sealing ring; 14. Corrugation; 15. Contact piece; 16. Inner sealing ring; 17. Cushion layer; 18. Lifting ring; 19. Water-absorbing silica gel packet. Specific implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-5 An induction coil with good sealing performance in this embodiment includes a coil body 1, a lower sealing shell 2 and a shell cover 3. The materials of the lower sealing shell 2 and the shell cover 3 are polyethylene. Two ring plates 4 are arranged concentrically inside the lower sealing shell 2. The two ring plates 4 form three ring cavities 5 in the lower sealing shell 2. The coil body 1 is arranged in the middle ring cavity 5. The lead of the coil body 1 passes through the outer ring plate 4 and the outer wall side of the lower sealing shell 2. A coil support is arranged in the middle ring cavity 5. The coil support is used to support and clamp the coil body 1 in the middle ring cavity 5. Then, the potting epoxy resin glue 7 can contact the coil body 1 in all directions, so as to pot the coil body 1. A plurality of slots 6 are respectively and evenly opened above the inner and outer side walls of the two ring plates 4. The middle ring cavity 5 is potted with epoxy resin glue 7. The epoxy resin glue 7 can prevent external substances from entering the coil interior, prevent the coil from being affected by moisture, corrosion and damage. And because the inductance coil will experience vibration during the working process, by using the epoxy resin glue 7, the structural stiffness of the coil can be increased, the vibration and resonance phenomena can be reduced, and the noise caused by vibration can be lowered. After potting, the upper plane position of the epoxy resin glue 7 is located below the slot 6 to avoid affecting the closing of the lower sealing shell 2 and the shell cover 3. A ring groove 8 is opened on the upper part of the outer wall side of the lower sealing shell 2. A sealing mechanism is arranged on the shell cover 3 to seal the induction coil in the lower sealing shell 2 and the shell cover 3.

[0023] Such as Figure 4As shown, the coil support includes a plurality of struts 9 circumferentially arranged at the bottom of the middle ring cavity 5. Above the struts 9 is a clamping frame 10 in a U shape. The coil body 1 is placed on the plurality of clamping frames 10. The clamping frame 10 does not contact the wires of the coil body 1, supports and clamps the coil body 1 in the middle ring cavity 5, lifts the lower part of the coil body 1, so that the potting epoxy resin glue 7 can contact the coil body 1 in all directions, and thus the coil body 1 is potted.

[0024] As Figure 1 , 3 , as shown in Figure 4, the sealing mechanism includes a set of sealing grooves 11 provided at the bottom of the shell cover 3. The set of sealing grooves 11 are respectively adapted to the two ring plates 4. A plurality of insertion plates 12 are respectively provided on the inner side walls of the sealing grooves 11. The corresponding plurality of insertion plates 12 are respectively inserted into the slots 6, improving the sealing effect of the middle ring cavity 5.

[0025] As Figure 4 , 5 As shown, an outer sealing ring 13 is provided at the bottom of the shell cover 3. The outer sealing ring 13 is adapted to the outer wall side of the lower sealing shell 2. There is a corrugation 14 inside the outer sealing ring 13. The corrugation 14 is placed in the ring groove 8. A plurality of abutting pieces 15 are evenly provided at the bottom of the shell cover 3. The plurality of abutting pieces 15 are respectively attached to the outer side of the outer sealing ring 13. The outer sealing ring 13 and the corrugation 14 are made of silicone material, and the abutting pieces 15 are plastics with certain elasticity. By placing the corrugation 14 in the ring groove 8 and the abutting pieces 15 providing auxiliary support to the outer sealing ring 13, the corrugation 14 tightly adheres to the ring groove 8, thus improving the sealing effect of the outer sealing ring 13 on the outer wall of the lower sealing shell 2.

[0026] As Figure 5 As shown, an inner sealing ring 16 is provided at the bottom of the shell cover 3. The inner sealing ring 16 is adapted to the inner wall side of the lower sealing shell 2. A cushion layer 17 is provided on the inner wall of the inner sealing ring 16. The cushion layer 17 is made of rubber. By fitting the inner sealing ring 16 with the inner wall of the lower sealing shell 2, the inner sealing ring 16 seals the inner wall of the lower sealing shell 2.

[0027] As Figure 1 As shown, a set of lifting rings 18 are provided above the shell cover 3, facilitating the user to separate the lower sealing shell 2 and the shell cover 3 later. Absorbent silica gel packets 19 are provided in the inner and outer ring cavities 5. The absorbent silica gel packets 19 are absorbent silica gel particles wrapped in non-woven fabric. The absorbent silica gel particles have strong water absorption. By providing the absorbent silica gel packets 19 in the inner and outer ring cavities 5, the humid air entering the lower sealing shell 2 and the shell cover 3 can be dehumidified.

[0028] In the specific implementation of this embodiment, two ring plates 4 are concentrically arranged inside the lower sealing shell 2. The two ring plates 4 form three ring cavities 5 in the lower sealing shell 2. The coil body 1 is arranged in the middle ring cavity 5, so that the coil body 1 can be protected. And a coil support is arranged in the middle ring cavity 5 to support and hold the coil body 1 in the middle ring cavity 5, lifting the lower part of the coil body 1, so that the potting epoxy resin glue 7 can contact the coil body 1 in all directions, thereby sealing the coil body 1. The position of the upper plane of the potting epoxy resin glue 7 after potting is located below the slot 6 to avoid affecting the closing of the lower sealing shell 2 and the shell cover 3. Through the structural setting of the sealing mechanism, the sealing grooves 11 are respectively engaged with the corresponding ring plates 4, and the corresponding plurality of insertion plates 12 are respectively inserted into the slots 6, improving the sealing effect of the middle ring cavity 5. By placing the corrugations 14 in the ring grooves 8 and the abutting pieces 15 assisting in supporting the outer sealing ring 13, the corrugations 14 are tightly attached to the ring grooves 8, thereby improving the sealing effect of the outer sealing ring 13 on the outer wall of the lower sealing shell 2. By fitting the inner sealing ring 16 with the inner wall of the lower sealing shell 2, the inner sealing ring 16 seals the inner wall of the lower sealing shell 2. By arranging moisture-absorbing silica gel packets 19 in the inner and outer ring cavities 5, the humid air entering the lower sealing shell 2 and the shell cover 3 can be moisture-absorbing treated.

[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An induction coil with good sealing performance, comprising a coil body (1), a lower sealing shell (2) and a shell cover (3), characterized in that: Inside the lower sealing shell (2), two ring plates (4) are arranged in concentric circles. The two ring plates (4) form three ring cavities (5) in the lower sealing shell (2). The coil body (1) is arranged in the middle ring cavity (5). The lead wire of the coil body (1) passes through the outer ring plate (4) and the outer wall side of the lower sealing shell (2). A coil support is arranged in the middle ring cavity (5). A plurality of slots (6) are evenly opened above the inner and outer side walls of the two ring plates (4). Epoxy resin glue (7) is potted in the middle ring cavity (5). After potting, the upper plane of the epoxy resin glue (7) is located below the slots (6). A ring groove (8) is opened in the upper part of the outer wall side of the lower sealing shell (2). A sealing mechanism is arranged on the shell cover (3).

2. The induction coil with good sealing performance according to claim 1, characterized in that: The coil support includes a plurality of struts (9) arranged circumferentially at the bottom of the middle ring cavity (5). A clamping frame (10) is arranged above the struts (9). The clamping frame (10) is in a U shape. The coil body (1) is placed on the plurality of clamping frames (10). The clamping frame (10) does not contact the wire of the coil body (1).

3. The induction coil with good sealing performance according to claim 1, characterized in that: The sealing mechanism includes a group of sealing grooves (11) arranged at the bottom of the shell cover (3). The group of sealing grooves (11) are respectively adapted to the two ring plates (4). A plurality of insertion plates (12) are respectively arranged on the inner side walls of the sealing grooves (11). The corresponding plurality of insertion plates (12) are respectively inserted into the slots (6).

4. The induction coil with good sealing performance according to claim 1, characterized in that: An outer sealing ring (13) is arranged at the bottom of the shell cover (3). The outer sealing ring (13) is adapted to the outer wall side of the lower sealing shell (2). There are card ribs (14) inside the outer sealing ring (13). The card ribs (14) are placed in the ring groove (8). A plurality of abutting pieces (15) are evenly arranged at the bottom of the shell cover (3). The plurality of abutting pieces (15) are respectively attached to the outer side of the outer sealing ring (13).

5. The induction coil with good sealing performance according to claim 1, characterized in that: An inner sealing ring (16) is arranged at the bottom of the shell cover (3). The inner sealing ring (16) is adapted to the inner wall side of the lower sealing shell (2). A cushion layer (17) is arranged on the inner wall of the inner sealing ring (16).

6. The induction coil with good sealing performance according to claim 1, characterized in that: A group of lifting rings (18) are arranged above the shell cover (3). Water-absorbing silica gel packets (19) are arranged in the inner and outer ring cavities (5).

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