A sealed motor of the encapsulant type

Abstract

This utility model discloses a sealant-type sealed motor. It includes: a housing; a flange, which is inserted into and assembled with the housing; a sealing groove, disposed at the mounting point between the flange and the housing, the sealing groove being coated with sealant; a plurality of bolt holes, symmetrically arranged on the flange and the housing, the bolt holes being located outside the sealing groove; and a protective groove, corresponding to the bolt holes, positioned between the sealing groove and the bolt holes, the bolt holes being located between the two ends of the protective groove. The advantages of this utility model are: it effectively prevents sealant from flowing into the bolt holes; and while ensuring that the amount of sealant applied exceeds the maximum capacity of the sealing groove, it achieves sufficient redundancy without affecting the motor's fixation.

Description

Technical Field

[0001] This utility model relates to the field of motor-related technology, and in particular to a sealant-type sealed motor. Background Technology

[0002] Currently, the motors in high-end vehicles are generally DP-EPS, which are waterproof motors installed on the vehicle chassis.

[0003] The mainstream waterproofing structure generally involves installing O-rings, applying sealant, and welding at the mating surface between the casing and the flange. However, O-rings are difficult to meet high corrosion resistance requirements; welding presents challenges in controlling weld slag and ensuring proper sealing.

[0004] Compared to the previous two methods, applying sealant offers advantages such as better sealing and stronger corrosion resistance. For the DP-EPS motor housing and flange mating surface, sealant is applied using a sealing groove at the flange and housing mounting point. The sealant is evenly applied around the entire groove, and when the flange assembly is inserted, the sealant is compressed and fills the groove. To ensure sufficient redundancy, the amount of sealant applied generally exceeds the maximum capacity of the sealing groove, ideally resulting in visible sealant overflow at the motor housing and flange mating surface. However, this introduces a problem: sealant can be squeezed into the bolt holes, flowing into them and causing sealant to adhere to the bolt threads, making it difficult to tighten the bolts. This can lead to loosening or even bolts falling out, ultimately increasing the risk of the motor rotor rubbing against the stator and seizing.

[0005] In summary, there is a need for a sealant-type motor that can prevent sealant from flowing into the bolt holes. Utility Model Content

[0006] The present invention aims to overcome the shortcomings of the prior art and provide a sealant-type motor that can prevent sealant from flowing into bolt holes.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A sealant-type sealed motor, comprising: chassis; A flange, which is inserted into and assembled with the housing; A sealing groove is provided at the mounting point between the flange and the housing, and the sealing groove is coated with sealant. A plurality of bolt holes are symmetrically arranged on the flange and the housing, and the bolt holes are located on the outside of the sealing groove; A protective groove, which corresponds to the bolt hole, is placed between the sealing groove and the bolt hole, and the bolt hole is located between the two ends of the protective groove.

[0008] When the flange is inserted into the housing, the sealant in the sealing groove overflows and flows into the protective groove. Since the protective groove is located between the sealing groove and the bolt hole, and the bolt hole is located between the two ends of the protective groove, it can effectively prevent the sealant from flowing into the bolt hole. Under the premise of ensuring that the amount of sealant applied exceeds the maximum amount of sealant stored in the sealing groove, it achieves the effect of having sufficient redundancy without affecting the motor fixing.

[0009] Preferably, the bolt holes include a first flange bolt hole and a second flange bolt hole on the flange. Both the first and second flange bolt holes are located outside the protective groove and between its two ends. The housing has a first housing bolt hole and a second housing bolt hole that match the first and second flange bolt holes. The first flange bolt hole and the first housing bolt hole are connected by a first fixing bolt, and the second flange bolt hole and the second housing bolt hole are connected by a second fixing bolt. The first and second fixing bolts are used to fix the housing and the flange, improving the fixing effect between them. Because the protective groove is located between the sealing groove and the bolt holes, and the bolt holes are located between the two ends of the protective groove, it effectively prevents sealant from flowing to the first and second flange bolt holes on the flange and the first and second housing bolt holes on the housing. This ensures that the amount of sealant applied exceeds the maximum sealant storage capacity of the sealing groove, achieving sufficient redundancy without affecting the motor fixing.

[0010] Preferably, the first flange bolt holes and the second flange bolt holes are both located on opposite sides of the flange. By providing bolt holes on both sides of the flange for bolt fixing to the housing, the fixing effect between the flange and the housing is further improved.

[0011] Preferably, the protective groove consists of a guide groove and a storage groove, which are interconnected, with the storage groove located at the end of the guide groove. When the flange is inserted into the housing assembly, the sealant, after being compressed, first flows into the guide groove. Once the guide groove is full of sealant, it then flows into the storage groove. This effectively prevents sealant from flowing into the bolt holes, ensuring that the amount of sealant applied exceeds the maximum storage capacity of the sealing groove, thus providing sufficient redundancy without affecting the motor's fixation.

[0012] Preferably, the adhesive guide groove is arc-shaped with the center of the flange as its arc point, and the adhesive storage groove is triangular in shape, with the arc-shaped end of the adhesive guide groove and the corner end of the adhesive storage groove connected. The arc-shaped design of the adhesive guide groove blocks the bolt holes from view, effectively protecting them; the triangular design of the adhesive storage groove effectively collects any overflowing sealant, preventing adhesive from flowing into the bolt holes.

[0013] Preferably, the inner side of the housing is provided with a rotating shaft, and the inner wall of the housing is provided with a rotating shaft mounting groove. One end of the rotating shaft is placed in the rotating shaft mounting groove and rotatably connected thereto. The flange is provided with a rotating shaft through hole that matches the other end of the rotating shaft. The other end of the rotating shaft passes through the rotating shaft through hole and is placed outside the housing. The rotating shaft and the rotating shaft through hole are rotatably connected. A rotor assembly is fixed on the rotating shaft. A stator assembly is fixed inside the housing and is placed outside the rotor assembly.

[0014] Preferably, a first bearing connected to the rotating shaft is provided at the mounting groove of the rotating shaft, and a second bearing connected to the rotating shaft is provided at the through hole of the rotating shaft. The design of the first and second bearings supports the rotating shaft, reduces the coefficient of friction during movement, ensures rotational accuracy, and simultaneously withstands radial and axial loads, ensuring efficient and stable operation of the motor.

[0015] Preferably, the rotor assembly includes a rotor core fixed to a rotating shaft, with magnetic blocks fixed on the rotor core. The stator assembly includes a stator core disposed outside the magnetic blocks, with windings fixed on the stator core. A busbar is fixed inside the housing, and the busbar has several busbar terminals. The windings are electrically connected to the busbar terminals. The housing wall also has terminal clearance holes matching the busbar terminals, and the busbar terminals pass through the terminal clearance holes and are located outside the housing. Power current flows into the windings on the stator core through the busbar terminals on the busbar, generating an electromagnetic field that drives the magnetic blocks on the rotor core to move, thereby driving the rotating shaft to rotate.

[0016] Preferably, one end of the housing has an opening, and the flange surface has a fitting insert that matches the housing opening. The shaft through-hole is located inside the insert insert, and the flange is connected to the housing through the fitting of the insert insert and the housing opening. The fitting of the insert insert and the housing opening guides and limits the insertion of the flange onto the housing, facilitating flange installation. The structure is simple, installation and fixing are convenient, and it saves time and effort.

[0017] Preferably, a chuck is fixed to the other end of the housing. The outer surface of the chuck has an annular waterproof groove, and the terminal clearance hole is located inside the annular waterproof groove. Several connecting clips are fixed to the outer wall of the chuck. The design of the connecting clips facilitates the installation of the motor on the vehicle chassis. The annular waterproof groove effectively prevents water from entering the housing through the terminal clearance hole, thus protecting the motor.

[0018] The beneficial effects of this utility model are: it can effectively prevent sealant from flowing into bolt holes; while ensuring that the amount of sealant applied exceeds the maximum storage capacity of the sealing groove, it achieves the effect of having sufficient redundancy without affecting the motor fixing; it improves the fixing effect between the flange and the housing; it can fully protect the bolt holes; it can fully collect the overflowing sealant; it has a simple structure, is easy to install and fix, and saves time and effort. Attached Figure Description

[0019] Figure 1 and Figure 2 This is a perspective view of the present invention; Figure 3 This is the front view of this utility model; Figure 4 and Figure 5 This is a bottom view of the present invention; Figure 6 yes Figure 4 Sectional view at point AA; Figure 7 yes Figure 5 Sectional view at point BB; Figure 8 This is a structural diagram of the flange; Figure 9 This is an end view of the opening in the casing.

[0020] In the diagram: 1. Housing, 2. Flange, 3. Sealing groove, 4. Sealant, 5. First flange bolt hole, 6. Second flange bolt hole, 7. First housing bolt hole, 8. Second housing bolt hole, 9. First fixing bolt, 10. Glue guide groove, 11. Glue storage groove, 12. Shaft, 13. Shaft mounting groove, 14. Shaft through hole, 15. First bearing, 16. Second bearing, 17. Rotor core, 18. Magnetic block, 19. Stator core, 20. Winding, 21. Busbar, 22. Busbar terminal block, 23. Terminal clearance hole, 24. Housing opening, 25. Insertion tube section, 26. Chuck, 27. Annular waterproof groove, 28. Connecting buckle. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1-9 In the embodiments described above, a sealant-type sealed motor includes: Casing 1; Flange 2 is assembled by inserting it into the housing 1. Sealing groove 3 is located at the mounting point between flange 2 and housing 1, and sealant 4 is applied inside the sealing groove 3. Several bolt holes are symmetrically arranged on the flange 2 and the housing 1, and the bolt holes are located on the outside of the sealing groove 3; The protective groove corresponds to the bolt hole. The protective groove is placed between the sealing groove 3 and the bolt hole. The bolt hole is located between the two ends of the protective groove. The protective groove is located on the mounting surface of the housing 1 and the flange 2.

[0023] like Figure 5 and Figure 7 As shown, the bolt holes include a first flange bolt hole 5 and a second flange bolt hole 6 on the flange 2. Both the first flange bolt hole 5 and the second flange bolt hole 6 are located outside the protective groove and between its two ends. The housing 1 has a first housing bolt hole 7 and a second housing bolt hole 8 that match the first flange bolt hole 5 and the second flange bolt hole 6. The first flange bolt hole 5 and the first housing bolt hole 7 are connected by a first fixing bolt 9, and the second flange bolt hole 6 and the second housing bolt hole 8 are connected by a second fixing bolt (not shown in the figure). The first fixing bolt 9 and the second fixing bolt are used to fix the housing 1 and the flange 2.

[0024] The first flange bolt hole 5 and the second flange bolt hole 6 are both located on opposite sides of the flange 2.

[0025] like Figure 9 As shown, the protective groove consists of a guide groove 10 and a storage groove 11. The guide groove 10 and the storage groove 11 are connected to each other, and the storage groove 11 is located at the end of the guide groove 10.

[0026] The adhesive guide groove 10 is arc-shaped with the center of the flange 2 as the arc center. The adhesive storage groove 11 is triangular in shape, and the arc end of the adhesive guide groove 10 and the corner end of the adhesive storage groove 11 are connected.

[0027] like Figure 4 and Figure 6As shown, a rotating shaft 12 is provided on the inner side of the housing 1, and a rotating shaft mounting groove 13 is provided on the inner wall of the housing 1. One end of the rotating shaft 12 is placed in the rotating shaft mounting groove 13 and rotatably connected to it. A rotating shaft through hole 14 matching the other end of the rotating shaft 12 is provided on the flange 2. The other end of the rotating shaft 12 passes through the rotating shaft through hole 14 and is placed outside the housing 1. The rotating shaft 12 and the rotating shaft through hole 14 are rotatably connected. A rotor assembly is fixed on the rotating shaft 12. A stator assembly is fixed inside the housing 1 and is placed outside the rotor assembly.

[0028] A first bearing 15 connected to the rotating shaft 12 is provided at the rotating shaft mounting groove 13, and a second bearing 16 connected to the rotating shaft 12 is provided at the rotating shaft through hole 14.

[0029] The rotor assembly includes a rotor core 17 fixed on the shaft 12, with a magnet 18 fixed on the rotor core 17. The stator assembly includes a stator core 19 disposed outside the magnet 18, with a winding 20 fixed on the stator core 19. A busbar 21 is fixed inside the housing 1, with several busbar terminals 22 disposed on the busbar 21. The winding 20 and the busbar terminals 22 are electrically connected. The housing 1 also has terminal clearance holes 23 that match the busbar terminals 22 on its shell wall. The busbar terminals 22 pass through the terminal clearance holes 23 and are located outside the housing 1. Power current flows into the winding 20 on the stator core 19 through the busbar terminals 22 on the busbar 21, generating an electromagnetic field that drives the magnet 18 on the rotor core 17 to move, thereby driving the shaft 12 to rotate.

[0030] One end of the housing 1 has a housing opening 24. The flange 2 has a tube portion 25 that matches the housing opening 24. A shaft through-hole 14 is located inside the tube portion 25. The flange 2 is connected to the housing 1 via the fitting of the tube portion 25 and the housing opening 24. The outer wall of the tube portion 25 matches the inner wall of the housing opening 24, and a sealing groove 3 is located at the root of the tube portion 25.

[0031] like Figure 2 As shown, a chuck 26 is fixed to the other end of the housing 1. An annular waterproof groove 27 is provided on the outer surface of the chuck 26. The terminal clearance hole 23 is located inside the annular waterproof groove 27. Several connecting buckles 28 are fixed on the outer wall of the chuck 26.

[0032] During the process of flange 2 being inserted into housing 1 through the fitting of insert 25 and housing opening 24, the sealant 4 in sealing groove 3 overflows under pressure. It first flows into guide groove 10, and after guide groove 10 is full of sealant 4, it flows into storage groove 11. Since the protective groove (guide groove 10 and storage groove 11) is located between sealing groove 3 and bolt holes, and the bolt holes are located between the two ends of the protective groove, it can effectively prevent sealant 4 from flowing into the first flange bolt hole 5 and the second flange bolt hole 6 on flange 2, and the first housing bolt hole 7 and the second housing bolt hole 8 on housing 1. Under the premise of ensuring that the amount of sealant 4 applied exceeds the maximum storage capacity of sealing groove 3, it achieves the effect of having sufficient redundancy without affecting the motor fixing.

Claims

1. A sealant-type sealed motor, characterized in that, include: Casing (1); Flange (2), which is connected to the housing (1) by insertion; A sealing groove (3) is provided at the mounting point between the flange (2) and the housing (1), and the sealing groove (3) is coated with sealant (4). A number of bolt holes are symmetrically arranged on the flange (2) and the housing (1), and the bolt holes are located on the outside of the sealing groove (3); The protective groove corresponds to the bolt hole and is placed between the sealing groove (3) and the bolt hole. The bolt hole is located between the two ends of the protective groove.

2. The sealant-type sealed motor according to claim 1, characterized in that, The bolt holes include a first flange bolt hole (5) and a second flange bolt hole (6) provided on the flange (2). The first flange bolt hole (5) and the second flange bolt hole (6) are both located outside the protective groove and between the two ends of the protective groove. The housing (1) is provided with a first housing bolt hole (7) and a second housing bolt hole (8) that match the first flange bolt hole (5) and the second flange bolt hole (6). The first flange bolt hole (5) and the first housing bolt hole (7) are connected by a first fixing bolt (9), and the second flange bolt hole (6) and the second housing bolt hole (8) are connected by a second fixing bolt.

3. A sealant-type sealed motor according to claim 2, characterized in that, The first flange bolt hole (5) and the second flange bolt hole (6) are both located on opposite sides of the flange (2).

4. A sealant-type sealed motor according to claim 1, characterized in that, The protective groove consists of a guide groove (10) and a storage groove (11), which are connected to each other. The storage groove (11) is located at the end of the guide groove (10).

5. A sealant-type sealed motor according to claim 4, characterized in that, The guide groove (10) is arc-shaped with the center of the flange (2) as the center of the arc. The storage groove (11) is triangular in shape. The arc end of the guide groove (10) and the corner end of the storage groove (11) are connected.

6. A sealant-type sealed motor according to any one of claims 1-5, characterized in that, The inner side of the housing (1) is provided with a rotating shaft (12), and the inner wall of the housing (1) is provided with a rotating shaft mounting groove (13). One end of the rotating shaft (12) is placed in the rotating shaft mounting groove (13) and rotatably connected to it. The flange (2) is provided with a rotating shaft through hole (14) that matches the other end of the rotating shaft (12). The other end of the rotating shaft (12) passes through the rotating shaft through hole (14) and is placed outside the housing (1). The rotating shaft (12) and the rotating shaft through hole (14) are rotatably connected. A rotor assembly is fixed on the rotating shaft (12). A stator assembly is fixed inside the housing (1). The stator assembly is placed outside the rotor assembly.

7. A sealant-type sealed motor according to claim 6, characterized in that, The shaft mounting groove (13) is provided with a first bearing (15) connected to the shaft (12), and the shaft through hole (14) is provided with a second bearing (16) connected to the shaft (12).

8. A sealant-type sealed motor according to claim 6, characterized in that, The rotor assembly includes a rotor core (17) fixed on a rotating shaft (12), a magnetic block (18) fixed on the rotor core (17), and a stator assembly including a stator core (19) disposed outside the magnetic block (18), a winding (20) fixed on the stator core (19), a busbar (21) fixed inside the housing (1), a plurality of busbar terminals (22) disposed on the busbar (21), the winding (20) and the busbar terminals (22) being electrically connected, and a terminal clearance hole (23) matching the busbar terminals (22) being provided on the shell wall of the housing (1), the busbar terminals (22) passing through the terminal clearance hole (23) and being placed outside the housing (1).

9. A sealant-type sealed motor according to claim 6, characterized in that, The housing (1) has a housing opening (24) at one end. The flange (2) has a tube part (25) that matches the housing opening (24) on its surface. The shaft through hole (14) is located inside the tube part (25). The flange (2) is connected to the housing (1) by the cooperation of the tube part (25) and the housing opening (24).

10. A sealant-type sealed motor according to claim 8, characterized in that, The other end of the housing (1) is fixed with a chuck (26). The outer surface of the chuck (26) is provided with an annular waterproof groove (27). The terminal clearance hole (23) is located inside the annular waterproof groove (27). Several connecting buckles (28) are fixed on the outer wall of the chuck (26).

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