Waterproof improved electromagnetic coil

Abstract

The invention relates to the technical field of electromagnetic coils, in particular to a waterproof improved electromagnetic coil which comprises a shell, a coil assembly and a base and further comprises a heat dissipation assembly, a first space is formed in the shell, the coil assembly is arranged in the space, and the heat dissipation assembly is arranged on the periphery of the coil assembly. According to the waterproof improved electromagnetic coil, a first connecting rod of the heat dissipation assembly is pushed forwards and backwards to pass through a first hole of the shell, the heat dissipation assembly is driven to move forwards and backwards, the heat dissipation assembly is driven to move forwards and backwards, the heat dissipation efficiency is improved, and the waterproof performance of the electromagnetic coil is improved. The heat dissipation assembly moves forwards and backwards in the second space, the heat dissipation assembly is made to be close to and away from the coil assembly, the heat dissipation assembly is arranged around the coil assembly, heat dissipation teeth of the heat dissipation assembly are made to be close to the coil assembly, and heat generated by the coil assembly in the using process after glue injection of the electromagnetic coil is completed can be conducted into a cavity of the connecting plate through the heat dissipation teeth. Water flow is injected into the cavity so that heat generated by the water flow can be taken away.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic coils, and particularly to a waterproof improved electromagnetic coil. Background Art

[0002] An electromagnetic coil is also called an inductance coil. An electromagnetic coil 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 of the wire itself will in turn have an inductive effect on the wires within the range of this electromagnetic field. The effect on the wire that generates the electromagnetic field itself is called "self-inductance", that is, the changing current generated by the wire itself generates a changing magnetic field, and this magnetic field further affects the current in the wire; the effect on other wires within the range of this electromagnetic field is called "mutual inductance".

[0003] The traditional waterproof method for electromagnetic coils is generally potting or using a sealing ring for waterproofing. Potting generally requires corresponding molds. After potting, the finished product needs to be taken out of the mold and then machined using machinery. This method is rather cumbersome and energy-consuming; there is also a method of pouring sealant into the coil housing. After pouring the sealant, the waterproof performance of the entire electromagnetic coil is greatly improved, but the following problems will correspondingly occur: Waterproof encapsulation materials (such as epoxy resin) usually have poor thermal conductivity. When the coil is energized, heat will be generated. In the case of coil encapsulation, the heat is not easily dissipated, and the heat accumulated around the coil is likely to cause problems such as coil aging and damage.

[0004] Therefore, we propose a waterproof improved electromagnetic coil. Summary of the Invention

[0005] One technical problem to be solved by this application is that waterproof encapsulation materials (such as epoxy resin) usually have poor thermal conductivity. When the coil is energized, heat will be generated. In the case of coil encapsulation, the heat is not easily dissipated, and the heat accumulated around the coil is likely to cause problems such as coil aging and damage.

[0006] To solve the above technical problem, an embodiment of this application provides a waterproof improved electromagnetic coil, which includes a housing, a coil assembly, a base, and further includes a heat dissipation assembly;

[0007] A space one is provided inside the housing. The coil assembly is arranged in space one. The heat dissipation assembly is arranged outside the coil assembly. The connecting plate of the heat dissipation assembly and the front end face, the rear end face of space one and the inner surface of the housing form a space two. The base is arranged at the rear end of the coil assembly;

[0008] By respectively moving the connecting rod one of the heat dissipation assembly forward and backward, the connecting rod one passes through the hole one of the housing, and then drives the heat dissipation assembly to move forward and backward. The heat dissipation assembly advances and retreats in space two, so that the heat dissipation assembly approaches and moves away from the coil assembly.

[0009] In some embodiments, a glue outlet is provided at the left end of the outer shell, and the glue outlet is symmetric about the vertical axis passing through the center of the circle of the left end face of the outer shell;

[0010] A terminal block is further provided at the front of the outer shell. The terminal block is symmetric about the vertical axis passing through the center of the circle of the left end face of the outer shell. A water inlet hole is provided below the glue outlet. A hole 1 is provided on the periphery of the outer shell. The hole 1 is a through hole, and the number of the holes 1 is four;

[0011] A diversion tube is provided on the inner wall of the front part of the outer shell. The rear of the diversion tube coincides with the front end face, and the front end face and the rear end face are symmetric about the middle section plane of the space two.

[0012] In some embodiments, the water inlet hole is communicated with the channel 1. The channel 1 is annular. The channel 1 is communicated with the channel 2, and the channel 2 is connected with the diversion tube.

[0013] In some embodiments, the coil assembly includes a winding post and a wire, and the wire is wound around the winding post.

[0014] In some embodiments, the heat dissipation assembly includes heat dissipation teeth, a connecting plate, a connecting rod 1, a hole 2, a connecting rod 2, a cavity, a gap, a hole 3, a hole 4;

[0015] The heat dissipation teeth are in the shape of arc flakes. A gap is formed between two adjacent heat dissipation teeth. A plurality of heat dissipation teeth are arranged below the connecting plate. A cavity is arranged inside the connecting plate. A hole 4 is arranged in the middle of the side surface of the connecting plate;

[0016] A connecting rod 1 is arranged on the upper surface of the connecting plate. A hole 2 and a hole 3 are arranged on the connecting rod 1. The hole 2 is close to the upper end of the connecting rod 1. The hole 3 is arranged near the lower end of the connecting rod 1. The connecting rod 2 is a limiting member, and the connecting rod 2 can pass through the hole 2 and the hole 3.

[0017] In some embodiments, the base includes a lower plate, an upper plate, and a glue injection port. The lower plate and the upper plate are integrally connected. Two glue injection ports are arranged on the top surface of the upper plate, and the two glue injection ports are symmetric about the vertical axis passing through the center of the circle of the top surface of the upper plate.

[0018] In some embodiments, the diameter of the connecting rod 1 is smaller than the diameter of the hole 1.

[0019] In some embodiments, the hole 4 is aligned and in contact with the diversion tube.

[0020] In some embodiments, the hole 2 and the hole 3 are through holes, and the diameters of the hole 2 and the hole 3 are smaller than the diameter of the connecting rod 1.

[0021] In some embodiments, another form of the heat dissipation teeth is a round rod shape, and a plurality of heat dissipation teeth are evenly distributed on the lower surface of the connecting plate.

[0022] The present invention has at least the following beneficial effects:

[0023] 1. By arranging a heat dissipation component around the coil assembly, the heat dissipation teeth of the heat dissipation component are close to the coil assembly. After the electromagnetic coil is injected with glue, the heat generated by the coil assembly during use can be conducted to the cavity of the connecting plate by the heat dissipation teeth. Injecting water into the cavity can take away the heat generated thereby.

[0024] 2. By setting a front end face and a rear end face inside the shell, and forming a space two with the outer surface of the heat dissipation component and the inner wall of the shell, the heat dissipation component can move forward or backward in the space two. By moving the connecting rod of the heat dissipation component forward or backward through the hole of the shell, the heat dissipation component is pushed forward or backward. The heat dissipation component moves forward or backward in the space two, so that the heat dissipation component is close to or away from the coil component. When the electromagnetic coil is assembled, the connecting rod can be pulled backward to move the heat dissipation component backward, which is convenient for the coil component to be installed in the space one of the shell. After the coil component is installed, the connecting rod is moved forward to move the heat dissipation component forward and close to the coil component, which is convenient for completing the glue injection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an exploded schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the housing of the present invention;

[0027] Figure 3 is a schematic diagram of the housing of the present invention from another angle;

[0028] Figure 4 It is a cross-sectional view of the housing of the present invention;

[0029] Figure 5 It is the right side view and AA section of the housing of the present invention;

[0030] Figure 6 It is a schematic diagram of the coil assembly of the present invention;

[0031] Figure 7 This is a schematic diagram of the structure of the heat dissipation component of the present invention;

[0032] Figure 8 A schematic diagram of the heat dissipation assembly structure from another perspective of the present invention;

[0033] Figure 9 It is a schematic diagram of the base of the present invention;

[0034] Figure 10 It is a top view of the overall structure of the present invention and a B-B cross-sectional schematic diagram;

[0035] Figure 11 It is a top view of the overall structure of the present invention and a C-C cross-sectional schematic diagram;

[0036] Figure 12 This is a schematic diagram of a heat dissipation component in Embodiment 2 of the present invention;

[0037] Figure 13 This is a schematic diagram when the overall structure of the present invention is assembled;

[0038] Figure 14 This is a schematic diagram of the overall structure in Embodiment 3 of the present invention;

[0039] Figure 15 This is a schematic diagram of the heat dissipation component in Embodiment 3 of the present invention.

[0040] In the figure: 100 - housing; 200 - heat dissipation component; 300 - coil component; 400 - base; 101 - glue outlet; 102 - terminal; 103 - water inlet hole; 104 - hole one; 105 - space one; 106 - diversion pipe; 107 - front end face; 108 - rear end face; 109 - channel one; 110 - channel two; 111 - space two; 201 - heat dissipation teeth; 202 - connecting plate; 203 - connecting rod one; 204 - hole two; 205 - connecting rod two; 206 - cavity; 207 - gap; 208 - hole three; 209 - hole four; 301 - winding post; 302 - wire; 401 - lower plate; 402 - upper plate; 403 - glue injection port. Detailed implementation manners

[0041] 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.

[0042] Embodiment 1: Please refer to Figures 1-11 , Figure 13 , the present invention provides a technical solution: a waterproof improved electromagnetic coil, including a housing 100, a coil component 300, a base 400, and further including a heat dissipation component 200;

[0043] A space one 105 is provided inside the housing 100, the coil component 300 is arranged in the space one 105, the heat dissipation component 200 is arranged on the periphery of the coil component 300, a space two 111 is formed by the connecting plate 202 of the heat dissipation component 200, the front end face 107 and the rear end face 108 of the space one 105, and the inner surface of the housing 100, and the base 400 is arranged at the rear end of the coil component 300;

[0044] By respectively moving the connecting rod one 203 of the heat dissipation component 200 forward and backward, the connecting rod one 203 passes through the hole one 104 of the housing 100, and then pushes the heat dissipation component 200 to move forward or backward, and the heat dissipation component 200 moves forward and backward in the space two 111, so that the heat dissipation component 200 approaches or moves away from the coil component 300.

[0045] Furthermore, a glue outlet 101 is provided at the left end of the outer shell 100, and the glue outlet 101 is symmetric about the vertical axis passing through the center of the left end face of the outer shell 100. By providing the glue outlet 101 at the left end of the outer shell 100, it is convenient for the injected glue to flow out from the glue outlet, and then it can be judged that the glue inside the outer shell 100 is evenly distributed around the coil assembly 300 and the heat dissipation assembly 200, and it is ensured that the air inside the outer shell 100 is extruded from the glue outlet 101 during the glue injection process.

[0046] A terminal block 102 is also provided at the front part of the outer shell 100. The terminal block 102 is symmetric about the vertical axis passing through the center of the left end face of the outer shell 100. A water inlet hole 103 is provided below the glue outlet 101. A hole 104 is provided on the periphery of the outer shell 100. The hole 104 is a through hole, and the number of the holes 104 is four. By providing the terminal block 102 to connect with an external electrical appliance, and by providing the water inlet hole 103 below the glue outlet 101, when the electromagnetic coil is powered on and generates heat, water is injected from the water inlet hole 103 to achieve the purpose of taking away the heat generated by the electromagnetic coil and cooling down. By providing the hole 104, the connecting rod 203 of the heat dissipation assembly 200 passes through the hole 104. The four holes 104 are arranged in a circumferential array on the side surface of the outer shell 100, ensuring that the connecting rods 203 of the four heat dissipation assemblies 200 pass through the holes 104, and the connecting rod 203 can move back and forth in the hole 104.

[0047] A diversion pipe 106 is provided on the inner wall of the front part of the outer shell 100. The rear of the diversion pipe 106 coincides with the front end face 107, and the front end face 107 and the rear end face 108 are symmetric about the cross section in the space two 111. By providing the diversion pipe 106 on the inner wall of the front part of the outer shell 100, the water flowing through the water inlet hole 103 is led to the diversion pipe 106, and then to the cavity 206 of the connecting plate 202 of the heat dissipation assembly 200, accelerating the removal of the heat generated by the electromagnetic coil by the heat dissipation assembly 200 and cooling down the coil assembly 300. By the coincidence of the rear of the diversion pipe 106 and the front end face 107, the front end of the heat dissipation assembly 200 coincides with the front end face 107, and the hole four 209 of the heat dissipation assembly 200 is docked with the diversion pipe. By setting the front end face 107 and the rear end face 108 to be symmetric about the cross section in the space two 111, the front end face 107, the rear end face 108 and the outer surface of the connecting plate 202 of the heat dissipation assembly 200 enclose the space two 111, enabling the heat dissipation assembly 200 to move in the space two 111 in the direction close to and away from the center of the outer shell 100, and both the front end face 107 and the rear end face 108 are within the space one 105 of the outer shell 100, making the size of the space two 111 smaller than that of the space one 105.

[0048] Further, the water inlet hole 103 communicates with the first channel 109. The first channel 109 is annular. The first channel 109 communicates with the second channel 110. The second channel 110 is connected to the diversion pipe 106. Through the connection between the water inlet hole 103 and the first channel 109, the connection between the first channel 109 and the second channel 110, and the connection between the second channel 110 and the diversion pipe 106, water flows in from the water inlet hole 103, passes through the first channel 109 which is annular, and the water flows along the annular first channel 109 to the second channel 110. The number of the second channels 110 is four. The water flows from the four second channels 110 to the four diversion pipes 106, and finally flows through the diversion pipes 106 to the four heat dissipation components 200.

[0049] Further, the coil assembly 300 includes a winding post 301 and a wire 302. The wire 302 is wound around the winding post 301.

[0050] Further, the heat dissipation component 200 includes heat dissipation teeth 201, a connecting plate 202, a first connecting rod 203, a second hole 204, a second connecting rod 205, a cavity 206, a gap 207, a third hole 208, and a fourth hole 209.

[0051] The heat dissipation teeth 201 are in the shape of arc sheets. A gap 207 is formed between two adjacent heat dissipation teeth 201. A plurality of heat dissipation teeth 201 are arranged under the connecting plate 202. A cavity 206 is arranged inside the connecting plate 202. A fourth hole 209 is arranged in the middle of the side surface of the connecting plate 202. By forming the heat dissipation teeth 201 in the shape of arc sheets, when the heat dissipation component 200 moves closer to the coil assembly 300, the arc-shaped heat dissipation teeth 201 approach the coil assembly 200. The heat dissipation area is increased by the gap 207 formed between two adjacent heat dissipation teeth 201, and the heat generated by the energization of the coil assembly is conducted to the connecting plate 202 connected to the arc-shaped heat dissipation teeth 201 more quickly. By providing a cavity 206 inside the connecting plate 202 and a fourth hole 209 in the middle of the side surface of the connecting plate 202, the water flowing through 106 flows into the cavity 206 of the connecting plate 202 through the fourth hole 209, taking away the heat conducted by the arc-shaped heat dissipation teeth 201 and the gap 207, achieving the effect of cooling and temperature reduction.

[0052] The upper surface of the connecting plate 202 is provided with a first connecting rod 203. A limiting block is provided at the top end of the first connecting rod 203. A second hole 204 and a third hole 208 are provided on the first connecting rod 203. The second hole 204 is close to the upper end of the first connecting rod 203, and the third hole 208 is arranged near the lower end of the first connecting rod 203. The second connecting rod 205 is a limiting member, and the second connecting rod 205 can pass through the second hole 204 and the third hole 208. By providing a limiting block at the top end of the first connecting rod 203, the position of the heat dissipation component 200 in the internal space 105 of the housing 100 is restricted. By providing a second hole 204 and a third hole 208 on the first connecting rod 203, and the second connecting rod 205 being a limiting member, the second connecting rod 205 is inserted into the second hole 204 and the third hole 208 to fix the position of the heat dissipation component 200 in the internal space 105 of the housing 100. When the first connecting rod is moved to drive the heat dissipation component 200 to move away from the center of the internal space 105 of the housing 100, when the outer surface of the connecting plate 202 of the heat dissipation component 200 contacts the inner wall of the housing 100, the second connecting rod 205 is inserted into the third hole 208 to fix the position of the heat dissipation component 200. At this time, the coil component 300 can be installed into the internal space 105 of the housing 100; when the first connecting rod is moved to drive the heat dissipation component 200 to move towards the center of the internal space 105 of the housing 100, when the limiting block provided at the top end of the first connecting rod 203 prevents the first connecting rod 203 from moving, the second connecting rod 205 is inserted into the third hole 208 to fix the position of the limiting component 200. At this time, the coil component 200 has been installed into the housing 100, and the installation process of the base 400 can be carried out.

[0053] Further, the base 400 includes a lower plate 401, an upper plate 402, and a glue injection port 403. The lower plate 401 and the upper plate 402 are integrally connected. Two glue injection ports 403 are provided on the top surface of the upper plate 402, and the two glue injection ports 403 are symmetric about the vertical axis passing through the center of the top surface of the upper plate 402. By providing the upper plate 402 and the lower plate 401 on the base 400, when installing the base 400, the upper plate 402 contacts the lower end of the winding column 301 of the coil component 200, and the lower plate 401 contacts the bottom end of the housing 100 and is connected by fasteners. By providing two glue injection ports 403 on the top surface of the upper plate 402, the glue injection process is from bottom to top, and the glue enters from the two glue injection ports 403 and flows upward along the gap between the housing 100, the heat dissipation teeth 201 of the heat dissipation component 200, the inner surface of the connecting plate 202, and the coil component 300. During this process, the air inside the housing 100 is squeezed out from the glue outlet 401 to ensure the sealing effect after the glue injection is completed.

[0054] Further, the diameter of the first connecting rod 203 is smaller than the diameter of the first hole 104, so that the first connecting rod 203 can pass through and move in the first hole 104.

[0055] Further, the fourth hole 209 is aligned and in contact with the diversion pipe 106, so that water flow can pass through the diversion pipe 106 and flow through the fourth hole 209 into the cavity 206 of the connecting plate 202 of the heat dissipation assembly 200.

[0056] Further, the second hole 204 and the third hole 208 are through holes, and the diameters of the second hole 204 and the third hole 208 are smaller than the diameter of the first connecting rod 203, so as to ensure that the arrangement of the second hole 204 and the third hole 208 does not affect the normal use due to the over-large opening of the first connecting rod 203 itself.

[0057] Next, in combination with Figures 1-11 , Figure 13 the installation, potting, and heat dissipation processes of this electromagnetic switch will be introduced:

[0058] First, a heat dissipation assembly 200 is arranged in the space between the front end face 107 and the rear end face 108 of the inner wall of the housing 100. The first connecting rod 203 of the heat dissipation assembly 200 passes through the first hole 104 of the housing 100. During the initial installation, the first connecting rod 203 passes through the first hole 104, and manually pull the first connecting rod 203 to move towards the inner wall direction of the housing 100 until the connecting plate 202 of the heat dissipation assembly 200 is attached to the inner wall of the housing 100. At this time, insert the second connecting rod 205 into the third hole 208 to limit the further movement of the heat dissipation assembly 200, so that the heat dissipation assembly 200 is in a fixed state. After the four heat dissipation assemblies 200 are fixed according to the above operation, the coil assembly 300 is installed into the space 105 of the housing 100. Since the connecting plate 202 of the heat dissipation assembly 200 is in close contact with the inner wall of the housing 100 at this time, the heat dissipation teeth 201 of the heat dissipation assembly 200 will move towards the inner wall of the housing 100 together with the connecting plate 202 and enter the space two 111, and the heat dissipation teeth 201 will not block the direction of the winding post 301, as Figure 13As shown in the figure, the coil assembly 300 can thus be smoothly installed into the space 105 of the housing 100. One end of the coil assembly 300 contacts the front inner wall of the housing 100. At this time, the coil assembly 300 is installed into the space 105 of the housing 100. At this time, the diversion tube 106 of the housing 100 is not aligned and docked with the hole four 209 of the heat dissipation assembly 200. Next, pull out the four link rods two 205 from the hole three 208 of the link rod one 203 of the four heat dissipation assemblies 200, and push the link rod one 203 of the heat dissipation assembly 200 towards the center of the space 105 of the housing 100 until the heat dissipation teeth 201 of the heat dissipation assembly 200 are close to the wire 302 of the coil assembly 300 and the link rod one 203 of the heat dissipation assembly 200 cannot move forward. At this time, insert the link rod two 205 into the hole two 204 of the link rod one 203 of the heat dissipation assembly 200 to limit the further movement of the heat dissipation assembly 200. At this time, the diversion tube 106 of the housing 100 is aligned and docked with the hole four 209 of the heat dissipation assembly 200. After all four heat dissipation assemblies 200 are moved in place, connect the base 400 to the rear end of the housing 100 through fasteners. Thus, the installation process of the entire electromagnetic switch is completed.

[0059] As Figure 11 shown, the electromagnetic switch is injected with glue below. Place the electromagnetic switch upright, insert the glue injection nozzle into the glue injection port 403 of the base 400, and start injecting glue from the bottom up. The glue passes through the glue injection port 403 and enters along the channel formed between the upper plate 402 and the inner wall of the housing 100 and the lower end of the coil assembly 300, and moves from bottom to top along the gap 207 between the heat dissipation teeth 201 of the heat dissipation assembly 200 and the gap between the heat dissipation teeth 201 of the heat dissipation assembly 200 and the winding post 301 and the wire 302 of the coil assembly 300. Stop injecting glue when the glue flows out of the glue outlet 101. After the glue solidifies and hardens, the potting and waterproofing of the entire electromagnetic coil is completed.

[0060] When the electromagnetic coil is connected to an external electrical appliance through the terminal 102 and is energized, heat will be generated. The heat is transferred around the wire 302 to the glue in contact with the heat dissipation teeth 201. The heat dissipation teeth 201 transfer the heat to the connecting plate 202 through the gap 207. At this time, water is injected through the water inlet hole 103. The water flows through the water inlet hole 103, the channel one 109 connected to the water inlet hole 103, the channel two 110 connected to the channel one 109, and the diversion tube 106 connected to the channel two 110. Finally, it is docked with the hole four 209 through the diversion tube 106 and flows into the cavity 206 of the connecting plate 202 to take away the heat transferred by the heat dissipation teeth 201 to the connecting plate 202 to achieve the purpose of cooling.

[0061] Embodiment 2: Different from Embodiment 1, the heat dissipation teeth 201 of the heat dissipation assembly 200 in this embodiment are in the shape of round rods, as Figure 12As shown, the heat dissipation teeth 201 are evenly distributed on the lower surface of the connecting plate 202. When the coil generates heat, the round rod-shaped heat dissipation teeth 201 transfer the heat of the winding post 301, the wire 302, and the colloid to the connecting plate 202, and the subsequent heat dissipation and cooling process is the same as that of the embodiment.

[0062] Embodiment 3: Different from Embodiments 1 and 2, as Figures 14-15 shown, the housing 100 of this embodiment is square, the heat dissipation component 200 is a rectangular square plate type, the heat dissipation teeth 201 are rectangular square plate types with an arc depression in the middle, and the number of the heat dissipation components 200 is four, which are respectively arranged on the left and right side walls of the housing 100. The base 400 is square. The installation, glue injection process, and heat dissipation process of this embodiment are exactly the same as those of Embodiment 1.

[0063] 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.

Claims

1. An improved waterproof electromagnetic coil, comprising a housing (100), a coil assembly (300), and a base (400), characterized in that: It further includes a heat dissipation component (200); A space one (105) is provided inside the housing (100). The coil component (300) is arranged in the space one (105), and the heat dissipation component (200) is arranged around the coil component (300). The connecting plate (202) of the heat dissipation component (200) and the front end face (107), rear end face (108) of the space one (105) and the inner surface of the housing (100) form a space two (111). The base (400) is arranged at the rear end of the coil component (300); By moving the first connecting rod (203) of the heat dissipation component (200) forward and backward respectively, the first connecting rod (203) passes through the first hole (104) of the housing (100), thereby driving the heat dissipation component (200) to move forward and backward. The heat dissipation component (200) advances and retreats in the space two (111), so that the heat dissipation component (200) approaches and moves away from the coil component (300).

2. The improved waterproof electromagnetic coil according to claim 1, wherein: A glue outlet (101) is provided at the left end of the housing (100), and the glue outlet (101) is symmetric about the vertical axis passing through the center of the left end face of the housing (100); A wiring terminal (102) is further provided at the front part of the housing (100). The wiring terminal (102) is symmetric about the vertical axis passing through the center of the left end face of the housing (100). An inlet hole (103) is provided below the glue outlet (101). The periphery of the housing (100) is provided with the first hole (104). The first hole (104) is a through hole, and the number of the first holes (104) is four; A guide pipe (106) is provided on the inner wall of the front part of the housing (100). The rear of the guide pipe (106) coincides with the front end face (107), and the front end face (107) and the rear end face (108) are symmetric about the middle section of the space two (111).

3. The improved waterproof electromagnetic coil according to claim 2, characterized in that: The inlet hole (103) is communicated with a first channel (109). The first channel (109) is circular, and the first channel (109) is communicated with a second channel (110). The second channel (110) is connected with the guide pipe (106).

4. An improved waterproof electromagnetic coil according to claim 1, characterized in that: The coil component (300) includes a winding post (301) and a wire (302), and the wire (302) is wound around the winding post (301).

5. An improved waterproof electromagnetic coil according to claim 3, characterized in that: The heat dissipation component (200) includes heat dissipation teeth (201), a connecting plate (202), the first connecting rod (203), a second hole (204), a second connecting rod (205), a cavity (206), a gap (207), a third hole (208), and a fourth hole (209); The heat dissipation teeth (201) are arc-shaped sheets. A gap (207) is formed between two adjacent heat dissipation teeth (201). A number of heat dissipation teeth (201) are arranged below the connecting plate (202). The cavity (206) is arranged inside the connecting plate (202), and the fourth hole (209) is arranged in the middle of the side surface of the connecting plate (202); The upper surface of the connecting plate (202) is provided with the first connecting rod (203). The first connecting rod (203) is provided with a second hole (204) and a third hole (208). The second hole (204) is close to the upper end of the first connecting rod (203), and the third hole (208) is arranged near the lower end of the first connecting rod (203). The second connecting rod (205) is a limiting member, and the second connecting rod (205) can pass through the second hole (204) and the third hole (208).

6. A waterproof improved electromagnetic coil according to claim 1, characterized in that: The base (400) includes a lower plate (401), an upper plate (402), and a glue injection port (403). The lower plate (401) is integrally connected to the upper plate (402). Two glue injection ports (403) are arranged on the top surface of the upper plate (402), and the two glue injection ports (403) are symmetric about the vertical axis passing through the center of the upper plate (402).

7. An improved waterproof electromagnetic coil according to claim 1, characterized in that: The diameter of the first connecting rod (203) is smaller than the diameter of the first hole (104).

8. An improved waterproof electromagnetic coil according to claim 5, characterized in that: The fourth hole (209) is aligned and in contact with the diversion pipe (106).

9. An improved waterproof electromagnetic coil according to claim 5, characterized in that: The second hole (204) and the third hole (208) are through holes, and the diameters of the second hole (204) and the third hole (208) are smaller than the diameter of the first connecting rod (203).

10. A waterproof improved electromagnetic coil according to claim 5, characterized in that: Another form of the heat dissipation teeth (201) is a round rod type, and a plurality of heat dissipation teeth (201) are evenly distributed on the lower surface of the connecting plate (202).

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