Waterproof improved electromagnetic coil

Abstract

The application relates to the technical field of electromagnetic coils, in particular to a waterproof improved electromagnetic coil which comprises a shell, a coil assembly, a base and a heat dissipation assembly, the inside of the shell is provided with a space one, the coil assembly is arranged in the space, the heat dissipation assembly is arranged on the periphery of the coil assembly, the connecting plate of the heat dissipation assembly and the front end face and the rear end face of the space one and the inner surface of the shell form a space two, and the base is arranged at the rear end of the coil assembly. The waterproof improved electromagnetic coil is pushed forward and backward respectively, the connecting rod one of the heat dissipation assembly passes through the hole one of the shell, the heat dissipation assembly is driven to move forward and backward, the heat dissipation assembly advances and retreats in the space two, the heat dissipation assembly is close to and away from the coil assembly, the heat dissipation assembly is arranged around the coil assembly, the heat dissipation teeth of the heat dissipation assembly are close to the coil assembly, the heat generated by the coil assembly during the use process after the glue injection of the electromagnetic coil is completed can be conducted to the connecting plate cavity through the heat dissipation teeth, and the water flow injected in the cavity can take away the heat generated thereby.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of electromagnetic coils, in particular to a waterproof improved electromagnetic coil. BACKGROUND

[0002] An electromagnetic coil is also called an inductor coil, and the electromagnetic coil is a device working by using the principle of electromagnetic induction. When electric current flows through a wire, a certain electromagnetic field is generated around the wire, and the wire itself is subjected to an induction effect in the electromagnetic field. The effect of the wire itself on the changing current is called self-induction, that is, the changing magnetic field generated by the wire itself further affects the current in the wire; the effect on other wires in the electromagnetic field is called mutual induction.

[0003] The traditional waterproof method of the electromagnetic coil is generally pouring sealing or sealing ring waterproof. Pouring sealing generally needs a corresponding mold, and the finished product needs to be taken out from the mold and then cut by a machine after pouring sealing. This method is relatively cumbersome and consumes energy. There is also a method of pouring sealing glue in the coil shell. The waterproof performance of the entire electromagnetic coil is greatly improved after pouring the sealing glue. However, the following problems may occur: the waterproof packaging material (such as epoxy resin) usually has poor thermal conductivity, and heat is generated under the condition of coil power supply. The heat is not easy to dissipate under the condition of coil packaging, and is easy to accumulate around the coil, causing coil aging and damage problems.

[0004] Therefore, the application provides a waterproof improved electromagnetic coil. SUMMARY

[0005] One of the technical problems to be solved by the application is that the waterproof packaging material (such as epoxy resin) usually has poor thermal conductivity, and heat is generated under the condition of coil power supply. The heat is not easy to dissipate under the condition of coil packaging, and is easy to accumulate around the coil, causing coil aging and damage problems.

[0006] To solve the above technical problems, the application provides a waterproof improved electromagnetic coil, which comprises a shell, a coil assembly, a base, and further comprises a heat dissipation assembly.

[0007] The shell is internally provided with a space one, the coil assembly is arranged in the space one, the heat dissipation assembly is arranged around the coil assembly, the connecting plate of the heat dissipation assembly and the front end face and the rear end face of the space one and the inner surface of the shell form a space two, and the base is arranged at the rear end of the coil assembly.

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

[0009] In some embodiments, the left end of the shell is provided with a glue outlet, the glue outlet is symmetrical about the vertical axis of the left end face of the shell;

[0010] The front of the shell is also provided with a wiring terminal, the wiring terminal is symmetrical about the vertical axis of the left end face of the shell, and the glue outlet is provided below the water inlet hole, and the periphery of the shell is provided with a hole one, the hole one is a through hole, and the number of the hole one is four.

[0011] The inner wall of the front of the shell is provided with a flow guide pipe, the rear of the flow guide pipe coincides with the front end face, and the front end face and the rear end face are symmetrical about the cross section in the space two.

[0012] In some embodiments, the water inlet hole is in communication with the channel one, the channel one is a circular ring, the channel one is in communication with the channel two, and the channel two is connected with the flow guide pipe.

[0013] In some embodiments, the coil assembly comprises a winding column and a wire, and the wire is wound on the winding column.

[0014] In some embodiments, the heat dissipation assembly comprises a heat dissipation tooth, a connecting plate, a connecting rod one, a hole two, a connecting rod two, a cavity, a gap, a hole three and a hole four.

[0015] The heat dissipation tooth is in the shape of a circular arc sheet, the gap is formed between the adjacent two heat dissipation teeth, the connecting plate is provided with a plurality of heat dissipation teeth on the lower surface, the cavity is arranged in the connecting plate, and the hole four is arranged on the middle part of the side surface of the connecting plate.

[0016] The upper surface of the connecting plate is provided with the connecting rod one, the hole two and the hole three are arranged on the connecting rod one, the hole two is close to the upper end of the connecting rod one, the hole three is arranged close to the lower end of the connecting rod one, the connecting rod two is a limiting piece, and the connecting rod two can pass through the hole two and the hole three.

[0017] In some embodiments, the base comprises a lower plate, an upper plate and a glue injection port, the lower plate is integrally connected with the upper plate, the top surface of the upper plate is provided with two glue injection ports, and the two glue injection ports are symmetrical about the vertical axis of the center of the top surface of the upper plate.

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

[0019] In some embodiments, the hole four is in alignment with the flow guide pipe.

[0020] In some embodiments, the hole two and the hole three are through holes, and the diameters of the hole two and the hole three are smaller than the diameter of the connecting rod one.

[0021] In some embodiments, another form of the heat dissipation tooth is a round bar type, and a plurality of heat dissipation teeth are uniformly distributed on the lower surface of the connecting plate.

[0022] The present application has at least the following advantages:

[0023] By setting the heat dissipation assembly around the coil assembly, the heat dissipation teeth of the heat dissipation assembly are close to the coil assembly, heat generated by the coil assembly in use after the glue injection of the electromagnetic coil is conducted to the cavity of the connecting plate by the heat dissipation teeth, and the water flow injected in the cavity can take away the generated heat.

[0024] 2. By setting the front end face and the rear end face inside the shell, and forming space two with the outer surface of the heat dissipation assembly and the inner wall of the shell, the heat dissipation assembly can move forward or backward in space two, the connecting rod one is pushed forward or backward by the hole of the shell through the forward or backward movement of the connecting rod one of the heat dissipation assembly, the heat dissipation assembly moves forward or backward in space two, the heat dissipation assembly is close to or away from the coil assembly, the connecting rod one is pulled backward to move the heat dissipation assembly backward when the coil assembly is assembled, the coil assembly is conveniently assembled into space one of the shell, the connecting rod one is moved forward to move the heat dissipation assembly forward to be close to the coil assembly after the coil assembly is assembled, and the glue injection process is conveniently completed. BRIEF DESCRIPTION OF DRAWINGS

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

[0026] Figure 2 It is a shell schematic diagram of the present application;

[0027] Figure 3 It is another angle schematic diagram of the shell of the present application;

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

[0029] Figure 5 It is a right view of the shell and A-A cross-sectional view of the present application;

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

[0031] Figure 7 It is a heat dissipation assembly structure schematic diagram of the present application;

[0032] Figure 8 It is another view heat dissipation assembly structure schematic diagram of the present application;

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

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

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

[0036] Figure 12 It is a heat dissipation assembly schematic diagram in embodiment 2 of the present application;

[0037] Figure 13 The schematic diagram for the overall structure assembly of the present application;

[0038] Figure 14 The schematic diagram for the overall structure of the embodiment 3 of the present application;

[0039] Figure 15 The schematic diagram for the heat dissipation assembly in the embodiment 3 of the present application.

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

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0042] Embodiment 1: please refer to Figures 1-11 、 Figure 13 The present application provides a technical solution: a waterproof improved electromagnetic coil, which comprises a shell 100, a coil assembly 300, a base 400, and further comprises a heat dissipation assembly 200.

[0043] The shell 100 is internally provided with a space one 105, the coil assembly 300 is arranged in the space one 105, the heat dissipation assembly 200 is arranged at the periphery of the coil assembly 300, the connecting plate 202 of the heat dissipation assembly 200 and the front end face 107 and the rear end face 108 of the space one 105 and the inner surface of the shell 100 form a space two 111, and the base 400 is arranged at the rear end of the coil assembly 300.

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

[0045] Further, the left end of the shell 100 is provided with a glue outlet 101, the glue outlet 101 is symmetrical about the vertical axis of the center of the left end surface of the shell 100; by setting the glue outlet 101 at the left end of the shell 100, the glue body injected from the glue outlet is convenient, and then it can be judged that the glue in the shell 100 has been evenly distributed around the coil assembly 300 and the heat dissipation assembly 200, and it is ensured that the air in the shell 100 is squeezed out from the glue outlet 101 during the glue injection process.

[0046] The front of the shell 100 is also provided with a wiring terminal 102, the wiring terminal 102 is symmetrical about the vertical axis of the center of the left end surface of the shell 100, the lower part of the glue outlet 101 is provided with a water inlet hole 103, the periphery of the shell 100 is provided with a hole one 104, the hole one 104 is a through hole, and the number of the hole one 104 is four; by setting the wiring terminal 102 to connect with the external electrical appliance, by setting the water inlet hole 103 below the glue outlet 101, when the electromagnetic coil is energized and generates heat, the water flow injected from the water inlet hole 103 can take away the heat generated by the electromagnetic coil and achieve the purpose of cooling. By setting the hole one 104, the connecting rod one 203 of the heat dissipation assembly 200 passes through the hole one 104, the four hole one 104 is distributed in a circumferential array on the side surface of the shell 100, which ensures that the connecting rod one 203 of the four heat dissipation assemblies 200 passes through the hole one 104, and the connecting rod one 203 can move forward and backward in the hole one 104.

[0047] The inner wall of the front of the shell 100 is provided with a flow guide pipe 106, the rear of the flow guide pipe 106 coincides with the front end surface 107, and the front end surface 107 and the rear end surface 108 are symmetrical about the cross section of the space two 111. By setting the flow guide pipe 106 on the inner wall of the front of the shell 100, the water flow flowing from the water inlet hole 103 is guided to the flow guide pipe 106, and then to the cavity 206 of the connecting plate 202 of the heat dissipation assembly 200, which accelerates the heat dissipation assembly 200 to take away the heat generated by the electromagnetic coil, and cools the coil assembly 300. By coinciding the rear of the flow guide pipe 106 with the front end surface 107, the front end of the heat dissipation assembly 200 coincides with the front end surface 107, and the hole four 209 of the heat dissipation assembly 200 is connected with the flow guide pipe. By setting the front end surface 107 and the rear end surface 108 symmetrical about the cross section of the space two 111, the front end surface 107, the rear end surface 108 and the outer surface of the connecting plate 202 of the heat dissipation assembly 200 form the space two 111, which can make the heat dissipation assembly 200 move in the space two 111 towards the center of the shell 100 and away from the center of the shell 100, and the front end surface 107 and the rear end surface 108 are in the space one 105 of the shell 100, so that the size of the space two 111 is smaller than that of the space one 105.

[0048] Further, the water inlet hole 103 is communicated with the channel one 109, the channel one 109 is circular ring shape, the channel one 109 is communicated with the channel two 110, the channel two 110 is connected with the flow guide pipe 106. Through the water inlet hole 103 communicated with the channel one 109, the channel one 109 communicated with the channel two 110, the channel two 110 connected with the flow guide pipe 106, the water flow from the water inlet hole 103, through the channel one 109, the channel one 109 is circular ring shape, the water flow along the circular ring shape channel one 109 to the channel two 110, the number of the channel two 110 is four, the water flow from the four channel two 110 to the four flow guide pipe 106, finally through the flow guide pipe 106 to the four heat dissipation assembly 200.

[0049] Further, the coil assembly 300 includes the winding column 301, the wire 302, the wire 302 is wound on the winding column 301.

[0050] Further, the heat dissipation assembly 200 includes the heat dissipation tooth 201, the connecting plate 202, the connecting rod one 203, the hole two 204, the connecting rod two 205, the cavity 206, the gap 207, the hole three 208, the hole four 209;

[0051] The heat dissipation tooth 201 is circular arc sheet shape, the gap 207 is formed between the adjacent two heat dissipation tooth 201, the connecting plate 202 is arranged below the plurality of heat dissipation tooth 201, the cavity 206 is arranged in the connecting plate 202, the hole four 209 is arranged in the middle of the side of the connecting plate 202; through the heat dissipation tooth 201 is arranged in the form of circular arc sheet shape, when the heat dissipation assembly 200 moves close to the coil assembly 300, the circular arc sheet shape heat dissipation tooth 201 close to the coil assembly 300, through the gap 207 formed between the adjacent two heat dissipation tooth 201 increases the heat dissipation area, the heat generated by the coil assembly power supply is more quickly conducted to the connecting plate 202 connected with the circular arc sheet shape heat dissipation tooth 201, through the cavity 206 arranged in the connecting plate 202, the hole four 209 arranged in the middle of the side of the connecting plate 202, the water flow through the hole four 209 flows into the cavity 206 of the connecting plate 202, carries away the heat conducted by the circular arc sheet shape heat dissipation tooth 201 and the gap 207, achieves the cooling effect.

[0052] The upper surface of the connecting plate 202 is provided with a connecting rod 203, the top end of the connecting rod 203 is provided with a limiting block, the connecting rod 203 is provided with a hole 204 and a hole 208, the hole 204 is close to the upper end of the connecting rod 203, the hole 208 is arranged close to the lower end of the connecting rod 203, the connecting rod 205 is a limiting piece, the connecting rod 205 can pass through the hole 204 and the hole 208. By arranging the limiting block at the top end of the connecting rod 203, the position of the heat dissipation assembly 200 in the internal space 105 of the shell 100 is limited, by arranging the hole 204 and the hole 208 on the connecting rod 203, the connecting rod 205 is a limiting piece, the connecting rod 205 is inserted into the hole 204 and the hole 208 to fix the position of the heat dissipation assembly 200 in the internal space 105 of the shell 100, when the connecting rod 1 is moved to drive the heat dissipation assembly 200 to move away from the center of the internal space 105 of the shell 100, when the outer surface of the connecting plate 202 of the heat dissipation assembly 200 contacts the inner wall of the shell 100, the connecting rod 205 is inserted into the hole 208 to fix the position of the heat dissipation assembly 200, at this time the coil assembly 300 can be installed in the internal space 105 of the shell 100; when the connecting rod 1 is moved to drive the heat dissipation assembly 200 to move towards the center of the internal space 105 of the shell 100, when the limiting block arranged at the top end of the connecting rod 203 prevents the movement of the connecting rod 203, the connecting rod 205 is inserted into the hole 208 to fix the position of the limiting assembly 200, at this time the coil assembly 200 has been installed in the shell 100, and the installation process of the base 400 can be performed.

[0053] Further, 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 with the upper plate 402, the upper plate 402 is provided with two glue injection ports 403 on the top surface, and the two glue injection ports 403 are symmetrical about the vertical axis passing through the center of the top surface of the upper plate 402. By arranging the upper plate 402 and the lower plate 401 on the base 400, when the base 400 is installed, the upper plate 402 contacts the lower end of the winding column 301 of the coil assembly 200, the lower plate 401 contacts the bottom end of the shell 100, and is connected by a fastener, by arranging two glue injection ports 403 on the top surface of the upper plate 402, the glue injection process is from bottom to top, the glue enters from the two glue injection ports 403 and flows from bottom to top between the gaps of the shell 100, the heat dissipation teeth 201 of the heat dissipation assembly 200, the inner surface of the connecting plate 202, and the coil assembly 300, in this process, the air in the shell 100 is squeezed out from the glue outlet 401, ensuring the sealing effect after the glue injection is completed.

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

[0055] Further, the fourth hole 209 is in contact with the flow guide pipe 106, so that water flow can pass through the flow guide pipe 106 and the fourth hole 209 to 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 connecting rod 203, so that the arrangement of the second hole 204 and the third hole 208 does not cause the connecting rod 203 to be excessively opened and affect normal use.

[0057] The following will be described in combination with Figures 1-11 , Figure 13 The installation, glue injection, and heat dissipation process of the electromagnetic switch will be introduced as follows:

[0058] First, the space between the front end surface 107 and the rear end surface 108 of the inner wall of the shell 100 is provided with the heat dissipation assembly 200, and the connecting rod 203 of the heat dissipation assembly 200 passes through the first hole 104 of the shell 100. In the initial installation, the connecting rod 203 passes through the first hole 104, and the connecting rod 203 is manually pulled to move to the direction of the inner wall of the shell 100 until the connecting plate 202 of the heat dissipation assembly 200 is attached to the inner wall of the shell 100. At this time, the connecting rod 205 is inserted 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 in the space 105 of the shell 100. Since the connecting plate 202 of the heat dissipation assembly 200 is attached to the inner wall of the shell 100 at this time, the heat dissipation teeth 201 of the heat dissipation assembly 200 will move to the inner wall of the shell 100 along with the connecting plate 202, enter the space 111, and the heat dissipation teeth 201 will not block the direction of the winding column 301, such as Figure 13As shown, the coil assembly 300 can 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 guide tube 106 of the housing 100 is not aligned with the hole 209 of the heat dissipation assembly 200. Next, pull the four connecting rods 205 out of the holes 208 of the connecting rods 203 of the four heat dissipation components 200. Push the connecting rods 203 of the heat dissipation components 200 towards the center of the space 105 of the housing 100, until the heat dissipation teeth 201 of the heat dissipation component 200 are close to the wires 302 of the coil assembly 300 and the connecting rods 203 of the heat dissipation component 200 can no longer move forward. At this point, insert the connecting rods 205 into the holes 204 of the connecting rods 203 of the heat dissipation component 200 to restrict further movement of the heat dissipation component 200. At this point, the guide tube 106 of the housing 100 is aligned with the hole 209 of the heat dissipation component 200. After all four heat dissipation components 200 have been moved into place, connect the base 400 to the rear end of the housing 100 with fasteners. The installation process of the entire electromagnetic switch is now complete.

[0059] like Figure 11 As shown, the electromagnetic switch is then coated with adhesive. The electromagnetic switch is placed upright, and the adhesive gun nozzle is inserted into the adhesive port 403 of the base 400. Adhesive is applied from bottom to top. The adhesive enters through the channel formed by the upper plate 402, the inner wall of the outer shell 100, and the lower end of the coil assembly 300 through the adhesive port 403. It 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. When the adhesive flows out of the adhesive outlet 101, the adhesive application is stopped. After the adhesive solidifies and hardens, the waterproofing of the entire electromagnetic coil is completed.

[0060] When the electromagnetic coil is connected to an external electrical appliance through the terminal 102, it generates heat after being energized. The heat is transferred around the wire 302 to the colloid 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 109 connected to the water inlet hole 103, the channel 210 connected to the channel 109, and the guide pipe 106 connected to the channel 210. Finally, the water flows into the cavity 206 of the connecting plate 202 through the guide pipe 106 and the hole 209, carrying away the heat transferred to the connecting plate 202 by the heat dissipation teeth 201 to achieve the purpose of cooling.

[0061] Example 2: Unlike Example 1, the heat dissipation teeth 201 of the heat dissipation component 200 in this example are rod-shaped, such 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 bar-shaped heat dissipation teeth 201 will transfer the heat of the winding column 301, the wire 302 and the glue to the connecting plate 202, and the subsequent heat dissipation cooling process is the same as the embodiment.

[0062] Embodiment 3: Different from Embodiments 1 and 2, as shown in the figure, the shell 100 of this embodiment is square, the heat dissipation assembly 200 is a rectangular square piece type, the heat dissipation teeth 201 are a rectangular square piece type with a circular arc recess in the middle, and the number of the heat dissipation assembly 200 is four, which are respectively arranged on the left and right side walls of the shell 100, and the base 400 is square. The mounting, glue injection process, and heat dissipation process of this embodiment are completely consistent with Embodiment 1. Figures 14-15

[0063] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application.​

Claims

1. A waterproof improved electromagnetic coil, comprising a housing (100), a coil assembly (300), and a base (400), characterized in that: It also includes a heat dissipation component (200); The outer shell (100) has a space one (105) inside, the coil assembly (300) is disposed in the space one (105), the heat dissipation assembly (200) is disposed around the coil assembly (300), the connecting plate (202) of the heat dissipation assembly (200) forms a space two (111) with the front end face (107) and rear end face (108) of the space one (105) and the inner surface of the outer shell (100), and the base (400) is disposed at the rear end of the coil assembly (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 outer shell (100), thereby driving the heat dissipation component (200) to move forward and backward. The heat dissipation component (200) moves forward and backward in the second space (111), so that the heat dissipation component (200) moves closer to and away from the coil component (300). The left end of the outer shell (100) is provided with an adhesive outlet (101), and the adhesive outlet (101) is symmetrical about the left end face of the outer shell (100) through the vertical axis of the circle. The front part of the outer casing (100) is also provided with a terminal block (102). The terminal block (102) is symmetrical about the left end face of the outer casing (100) through the vertical axis of the circle. A water inlet hole (103) is provided below the glue outlet (101). The outer periphery of the outer casing (100) is provided with the first hole (104). The first hole (104) is a through hole, and there are four first holes (104). A guide pipe (106) is provided on the inner front wall of the outer shell (100). The rear end of the guide pipe (106) coincides with the front end face (107). The front end face (107) and the rear end face (108) are symmetrical about the cross section of the space (111).

2. The waterproof improved electromagnetic coil according to claim 1, characterized in that: The water inlet (103) is connected to channel one (109), which is annular. Channel one (109) is connected to channel two (110), which is connected to the guide pipe (106).

3. The waterproof improved electromagnetic coil according to claim 1, characterized in that: The coil assembly (300) includes a winding post (301) and a wire (302), the wire (302) being wound on the winding post (301).

4. The waterproof improved electromagnetic coil according to claim 2, characterized in that: The heat dissipation assembly (200) includes heat dissipation teeth (201), connecting plate (202), connecting rod one (203), hole two (204), connecting rod two (205), cavity (206), gap (207), hole three (208), and hole four (209); The heat dissipation teeth (201) are arc-shaped, and 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 provided inside the connecting plate (202). The hole (209) is provided in the middle part of the side of the connecting plate (202). The upper surface of the connecting plate (202) is provided with the first connecting rod (203), and the second connecting rod (203) is provided with the second hole (204) and the 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 located close to 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).

5. 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 an injection port (403). The lower plate (401) is integrally connected to the upper plate (402). Two injection ports (403) are provided on the top surface of the upper plate (402). The two injection ports (403) are symmetrical about the vertical axis passing through the center of the top surface of the upper plate (402).

6. The waterproof improved 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).

7. A waterproof improved electromagnetic coil according to claim 4, characterized in that: The fourth hole (209) is aligned and in contact with the guide tube (106).

8. A waterproof improved electromagnetic coil according to claim 4, characterized in that: Hole 2 (204) and Hole 3 (208) are through holes, and the diameters of Hole 2 (204) and Hole 3 (208) are smaller than the diameter of Connecting Rod 1 (203).

9. A waterproof improved electromagnetic coil according to claim 4, characterized in that: Another form of the heat dissipation teeth (201) is a round bar shape, and a plurality of the heat dissipation teeth (201) are evenly distributed on the lower surface of the connecting plate (202).

Images