Plastic package motor with assembled reinforcing frame

Abstract

This utility model discloses a plastic-encapsulated motor with a reinforcing frame, comprising: a housing; a motor shaft, one end of which is connected inside the housing; a power cord connected to the bottom of the housing; and a fixing bracket circumferentially distributed on the outer wall of the housing for fixing the plastic-encapsulated motor. It also includes a reinforcing bracket fixedly connected to the outer wall of the housing. The reinforcing bracket includes a lower support member and an upper clamping member fixedly connected to the outer wall of the housing. The top of the lower support member abuts against the bottom of the fixing bracket, and the bottom of the upper clamping member abuts against the top of the fixing bracket. The lower support member and the upper clamping member are fixed together by a connecting member, thereby clamping the fixing bracket between the lower support member and the upper clamping member. This utility model, by fixing the fixing bracket to the outside of the housing with the lower support member and the upper clamping member and clamping the fixing bracket, reinforces the fixing bracket, increases the contact area between the fixing bracket and the housing, avoids stress concentration, and improves the stability of the fixing bracket.

Description

Technical Field

[0001] This utility model belongs to the field of motor equipment technology, and specifically relates to a plastic-encapsulated motor with an assembly reinforcement frame. Background Technology

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It utilizes a rotating magnetic field generated by a energized coil, which acts on the rotor to create magnetoelectric torque. An electric motor mainly consists of a stator and a rotor. The direction of the force exerted on a current-carrying conductor in a magnetic field depends on the direction of the current and the direction of the magnetic field lines. The working principle of an electric motor is that the magnetic field exerts a force on the current, causing the motor to rotate.

[0003] Plastic-encapsulated motors utilize plastic encapsulation technology to completely encapsulate the motor's stator core, windings, and other components with engineering plastics, eliminating the need for traditional stator insulation processes and the metal casing of ordinary motors. These micro-motors are used in household appliances such as vacuum cleaners, range hoods, air conditioners, and washing machines, as well as in instrument fans. The research and production of plastic-encapsulated motors are receiving increasing attention both domestically and internationally, and their promising future is attributed to a series of advantages not found in metal-cased motors.

[0004] In the existing technology, encapsulated motors are installed and fixed by a mounting bracket. However, the mounting bracket of an encapsulated motor is generally injection molded as a whole with the motor housing, resulting in low structural strength of the mounting bracket. This can easily cause stress concentration at the connection between the mounting bracket and the housing, and after long-term use, it can easily cause the mounting bracket and the housing to break. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned technical problems existing in the prior art and to provide a plastic-encapsulated motor with a mounting reinforcement frame. By setting a reinforcement frame on the outside of the housing, the lower support and the upper clamping member are fixed on the outside of the housing. The lower support and the upper clamping member are fixed by a connecting member, thereby clamping and fixing the bracket, which strengthens the bracket, increases the contact surface between the bracket and the housing, avoids stress concentration, and improves the stability of the bracket.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A plastic-encapsulated motor with a reinforcing frame includes: a housing; a motor shaft, one end of which is connected inside the housing; a power cord connected to the bottom of the housing; and a fixing bracket circumferentially distributed on the outer wall of the housing for fixing the plastic-encapsulated motor. It also includes a reinforcing bracket fixedly connected to the outer wall of the housing. The reinforcing bracket includes a lower support member and an upper clamping member fixedly connected to the outer wall of the housing. The top of the lower support member abuts against the bottom of the fixing bracket, and the bottom of the upper clamping member abuts against the top of the fixing bracket. The lower support member and the upper clamping member are fixed together by a connector, thereby clamping the fixing bracket between the lower support member and the upper clamping member. This invention, by setting a reinforcing bracket on the outside of the housing, and fixing the lower support member and the upper clamping member to the outside of the housing via a connector, clamps the fixing bracket, reinforcing it, increasing the contact area between the fixing bracket and the housing, avoiding stress concentration, and improving the stability of the fixing bracket.

[0008] Furthermore, the lower support component adopts a support ring with internal threads on its inner wall and corresponding external threads on the housing. The internal and external threads are matched, allowing the support ring to be threadedly connected to the outer wall of the housing. By designing the lower support component as a support ring with internal threads that precisely matches the external threads of the housing, uniform axial force distribution is achieved. This threaded connection method not only enhances the overall structural integrity but also effectively absorbs the vibration energy generated during motor operation, preventing displacement of the support ring due to long-term vibration. Simultaneously, the threaded structure facilitates on-site installation.

[0009] Furthermore, the upper clamping component includes two semi-circular retaining rings, each with a fixing block at both ends. The two semi-circular retaining rings are clamped onto the outer wall of the housing. The corresponding fixing blocks are connected by a locking screw, with locking nuts screwed into both ends of the locking screw. The locking nuts are tightened onto the fixing blocks. The design of the double semi-circular retaining rings in conjunction with the locking screw achieves uniform pressure on the fixed bracket.

[0010] Furthermore, the connector uses a connecting screw, with a connecting hole one penetrating the support ring and a corresponding connecting hole two penetrating the semi-circular retaining ring. Both ends of the connecting screw pass through connecting holes one and two respectively, and connecting nuts are screwed into both ends of the connecting screw. The connecting nuts are tightened at the bottom of the support ring and the top of the semi-circular retaining ring, respectively. During installation, the support ring is first fixed to the outside of the housing via a threaded connection. Then, according to the position of connecting hole one, the two semi-circular retaining rings are fixed to the outside of the housing. Finally, the connecting screw is inserted and the connecting nuts are tightened for fixation. The connecting screw penetrating the support ring and retaining rings forms a double locking mechanism, constraining both radial displacement and limiting axial movement. The preload of the connecting nuts allows the upper and lower clamping components to undergo elastic deformation; this elastic clamping can buffer sudden impact loads. Compared to traditional welding processes, this detachable structure facilitates the individual replacement of damaged components, reducing maintenance costs.

[0011] Furthermore, a snap-fit ​​connector is fixedly connected to one side of the support ring, which is used to securely fasten the power cord. Using the snap-fit ​​connector to secure the power cord improves its stability.

[0012] Furthermore, the snap-fit ​​connector uses a snap-fit ​​base. One end of the snap-fit ​​base has a fixing part, which is fixedly connected to the support ring. The other end of the snap-fit ​​base has a semi-circular slot corresponding to the power cord, in which the power cord is confined. The semi-circular slot is used to confine the power cord, and the fixing part is used to connect and fix it to the support ring.

[0013] Furthermore, the fixing part adopts a U-shaped structure, with tightening screws threaded to both the upper and lower ends. A tightening block is fixed to the end of the tightening screw near the support ring, and the tightening block is pressed against the upper and lower ends of the support ring. By tightening the screws against the upper and lower ends of the support ring, a rigid connection is achieved between the snap-fit ​​seat and the support ring. At the same time, the tightening screws facilitate the assembly and disassembly of the snap-fit ​​seat and the support ring.

[0014] Furthermore, a locking block is fixedly connected to the other end of the connector. The locking block has a second semi-circular slot corresponding to the first semi-circular slot. After the locking block is fixedly connected to the other end of the connector, the first and second semi-circular slots are joined to form a connector groove, in which the power cord is securely locked. This split-type locking block design achieves full circumferential coverage of the power cord, and the resulting connector groove perfectly matches the outer diameter of the power cord.

[0015] Furthermore, the locking block has fixing screws on both sides of the end near the locking seat, and the locking seat has a corresponding connecting block. The fixing screws pass through the connecting blocks, and fixing nuts are screwed into the fixing screws and tightened onto the connecting blocks. The locking block is fixed by the fixing screws and fixing nuts, and the power cord is locked in the locking groove, which ensures the stability of the power cord installation without damaging the power cord; at the same time, the locking block is easy and quick to install and remove.

[0016] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0017] This utility model provides a reinforcing frame on the outside of the housing. The lower support and the upper clamping member are fixed on the outside of the housing and are fixed by a connecting member, thereby clamping and fixing the bracket, which strengthens the bracket, increases the contact area between the bracket and the housing, avoids stress concentration, and improves the stability of the bracket.

[0018] This invention utilizes a support ring as the lower support component. The inner wall of the support ring has internal threads, while the housing has corresponding external threads. The internal and external threads are matched, allowing the support ring to be threadedly connected to the outer wall of the housing. By designing the lower support component as a support ring with internal threads, precisely matching the external threads of the housing, uniform axial force distribution is achieved. This threaded connection not only enhances the overall structural integrity but also effectively absorbs the vibration energy generated during motor operation, preventing displacement of the support ring due to long-term vibration. Furthermore, the threaded structure facilitates on-site installation.

[0019] In this invention, the fixing part adopts a U-shaped structure. Both the upper and lower ends of the fixing part are threaded with tightening screws. A tightening block is fixed to the end of the tightening screw near the support ring, and the tightening block is tightened against the upper and lower ends of the support ring. By tightening the tightening screw against the upper and lower ends of the support ring, a rigid connection between the snap-fit ​​seat and the support ring is achieved. At the same time, the setting of the tightening screw facilitates the assembly and disassembly of the snap-fit ​​seat and the support ring. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a plastic-encapsulated motor with an assembly reinforcement frame according to the present invention;

[0022] Figure 2 This is a schematic diagram of the connection between the housing and the motor shaft in this utility model;

[0023] Figure 3 for Figure 2 Top view;

[0024] Figure 4 This is a schematic diagram of the reinforcement frame in this utility model;

[0025] Figure 5 This is a schematic diagram of the connector structure in this utility model.

[0026] In the diagram, 1-housing; 2-motor shaft; 3-power cord; 4-fixed bracket; 5-reinforcing frame; 6-lower support; 7-upper clamping component; 8-semi-circular retaining ring; 9-fixing block; 10-locking screw; 11-locking nut; 12-connecting screw; 13-connecting nut; 14-clamping component; 15-clamping seat; 16-fixing part; 17-semi-circular groove one; 18-tightening screw; 19-tightening block; 20-locking block; 21-semi-circular groove two; 22-clamping groove; 23-fixing screw; 24-connecting block; 25-fixing nut; 26-support ring; 27-internal thread; 28-external thread. Detailed Implementation

[0027] like Figures 1 to 5As shown, this utility model discloses a plastic-encapsulated motor with a mounting and reinforcing frame, comprising: a housing 1; a motor shaft 2, one end of which is connected inside the housing 1; a power cord 3, connected to the bottom of the housing 1; a fixing bracket 4, circumferentially distributed on the outer side wall of the housing 1, used to fix the plastic-encapsulated motor; and a reinforcing frame 5, which is fixedly connected to the outer side wall of the housing 1. The reinforcing frame 5 includes a lower support member 6 and an upper clamping member 7 fixedly connected to the outer side wall of the housing 1. The top of the lower support member 6 abuts against the bottom of the fixing bracket 4, and the bottom of the upper clamping member 7 abuts against the top of the fixing bracket 4. The lower support member 6 and the upper clamping member 7 are fixed together by a connector, thereby clamping the fixing bracket 4 between the lower support member 6 and the upper clamping member 7.

[0028] The lower support member 6 adopts a support ring 26, the inner wall of which is provided with an internal thread 27, and the housing 1 is correspondingly provided with an external thread 28. The internal thread 27 and the external thread 28 are matched, so that the support ring 26 is threadedly connected to the outer wall of the housing 1. By designing the lower support member 6 as a support ring 26 with an internal thread 27, which precisely matches the external thread 28 of the housing 1, a uniform distribution of axial force is achieved. This threaded connection method not only enhances the overall structural integrity, but also effectively absorbs the vibration energy generated during motor operation, preventing the support ring 26 from shifting due to long-term vibration. At the same time, the threaded structure facilitates on-site installation.

[0029] The upper clamping component 7 includes two semi-circular retaining rings 8, each with a fixing block 9 at both ends. The two semi-circular retaining rings 8 are clamped onto the outer wall of the housing 1. The corresponding two fixing blocks 9 are connected by a locking screw 10, with locking nuts 11 screwed into both ends of the locking screw 10. The locking nuts 11 are tightened onto the fixing blocks 9. The design of the double semi-circular retaining rings 8 in conjunction with the locking screw 10 achieves uniform pressure on the fixed bracket 4.

[0030] The connector uses a connecting screw 12. A support ring 26 has a connecting hole 1 through it, and a semi-circular retaining ring 8 has a corresponding connecting hole 2 through it. Both ends of the connecting screw 12 pass through connecting holes 1 and 2 respectively, and connecting nuts 13 are screwed into both ends of the connecting screw 12. The connecting nuts 13 are tightened at the bottom of the support ring 26 and the top of the semi-circular retaining ring 8 respectively. During installation, the support ring 26 is first fixed to the outside of the housing 1 via a threaded connection. Then, according to the position of connecting hole 1, the two semi-circular retaining rings 8 are fixed to the outside of the housing 1. Finally, the connecting screw 12 is inserted, and the connecting nuts 13 are tightened for fixation. The connecting screw 12, passing through the support ring 26 and the retaining rings, forms a double locking mechanism, constraining both radial displacement and axial movement. The preload of the connecting nuts 13 allows the upper and lower clamping components to undergo elastic deformation; this elastic clamping can buffer sudden impact loads. Compared to traditional welding processes, this detachable structure facilitates the individual replacement of damaged components, reducing maintenance costs.

[0031] A snap-fit ​​component 14 is fixedly connected to one side of the support ring 26. The snap-fit ​​component 14 is used to securely fasten the power cord 3. Using the snap-fit ​​component 14 to secure the power cord 3 improves the stability of the power cord 3. The snap-fit ​​component 14 is a snap-fit ​​base 15. One end of the snap-fit ​​base 15 has a fixing part 16, which is fixedly connected to the support ring 26. The other end of the snap-fit ​​base 15 has a semi-circular slot 17 corresponding to the power cord 3, and the power cord 3 is limited in the semi-circular slot 17. The semi-circular slot 17 is used to limit the power cord 3, and the fixing part 16 is used to connect and fix it to the support ring 26. The fixing part 16 adopts a U-shaped structure. Both the upper and lower ends of the fixing part 16 are threadedly connected to a tightening screw 18. A tightening block 19 is fixed to the end of the tightening screw 18 near the support ring 26, and the tightening block 19 is tightened against the upper and lower ends of the support ring 26. The clamping screw 18 is clamped to the upper and lower ends of the support ring 26, thereby achieving a rigid connection between the snap-fit ​​seat 15 and the support ring 26. At the same time, the clamping screw 18 facilitates the assembly and disassembly of the snap-fit ​​seat 15 and the support ring 26.

[0032] A locking block 20 is fixedly connected to the other end of the locking seat 15. The locking block 20 has a semi-circular slot 21 corresponding to the semi-circular slot 17. After the locking block 20 is fixedly connected to the other end of the locking seat 15, the semi-circular slot 17 and the semi-circular slot 21 are spliced ​​together to form a locking groove 22, in which the power cord 3 is locked. The split locking block 20 design achieves full circumferential coverage of the power cord 3, and the locking groove 22 formed by splicing perfectly matches the outer diameter of the power cord 3. Fixing screws 23 are provided on both sides of the locking block 20 near the end of the locking seat 15. The locking seat 15 is provided with a corresponding connecting block 24. The fixing screws 23 pass through the connecting block 24, and fixing nuts 25 are screwed into the fixing screws 23. The fixing nuts 25 are tightened on the connecting block 24. The locking block 20 is fixed by the fixing screw 23 and the fixing nut 25, and the power cord 3 is clamped in the snap-fit ​​groove 22, which not only ensures the stability of the power cord 3 installation, but also does not damage the power cord 3; at the same time, the locking block 20 is easy and quick to install and remove.

[0033] This utility model provides a reinforcing frame 5 on the outside of the housing 1, and the lower support 6 and the upper clamping member 7 are fixed on the outside of the housing 1. The lower support 6 and the upper clamping member 7 are fixed by a connecting member, thereby clamping and fixing the bracket 4, which strengthens the bracket 4, increases the contact area between the bracket 4 and the housing 1, avoids stress concentration, and improves the stability of the bracket 4.

[0034] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A plastic-encapsulated motor with an assembly reinforcement frame, comprising: case; One end of the motor shaft is connected inside the housing; The power cord is connected to the bottom of the housing; Fixed brackets, circumferentially distributed on the outer side wall of the housing, are used to fix the encapsulated motor; Its features are: It also includes a reinforcing frame, which is fixedly connected to the outer side wall of the housing. The reinforcing frame includes a lower support member and an upper clamping member fixedly connected to the outer side wall of the housing. The top of the lower support member abuts against the bottom of the fixed bracket, and the bottom of the upper clamping member abuts against the top of the fixed bracket. The lower support member and the upper clamping member are fixed together by a connector, thereby clamping the fixed bracket between the lower support member and the upper clamping member.

2. The plastic-encased motor equipped with a reinforcing frame according to claim 1, characterized in that: The lower support member is a support ring, the inner wall of which is provided with an internal thread, and the housing is provided with an external thread. The internal thread and the external thread are matched and configured so that the support ring is threadedly connected to the outer wall of the housing.

3. The plastic-encased motor equipped with a reinforcing frame according to claim 2, characterized in that: The upper clamping component includes two semi-circular retaining rings, each with a fixing block at both ends. The two semi-circular retaining rings are clamped to the outer side wall of the housing. The corresponding two fixing blocks are connected by a locking screw, with a locking nut screwed into each end of the locking screw. The locking nut is tightened onto the fixing block.

4. The plastic-encased motor equipped with a reinforcing frame according to claim 3, characterized in that: The connector uses a connecting screw, the support ring has a connecting hole one through it, and the semi-circular retaining ring has a corresponding connecting hole two through it. The two ends of the connecting screw pass through the connecting hole one and the connecting hole two respectively, and a connecting nut is screwed into both ends of the connecting screw. The connecting nuts are respectively tightened to the bottom of the support ring and the top of the semi-circular retaining ring.

5. A plastic-encapsulated motor with an assembly reinforcement frame according to claim 2, characterized in that: A snap-fit ​​component is fixedly connected to one side of the support ring, and the snap-fit ​​component is used to clamp and fix the power cord.

6. A plastic-encapsulated motor with an assembly reinforcement frame according to claim 5, characterized in that: The snap-fit ​​component adopts a snap-fit ​​base. One end of the snap-fit ​​base is provided with a fixing part, which is fixedly connected to the support ring. The other end of the snap-fit ​​base is provided with a semi-circular slot corresponding to the power cord, and the power cord is limited in the semi-circular slot.

7. A plastic-encapsulated motor with an assembly reinforcement frame according to claim 5, characterized in that: The fixing part adopts a U-shaped structure. Both the upper and lower ends of the fixing part are threaded with tightening screws. The end of the tightening screw near the support ring is fixed with a tightening block, and the tightening block is pressed against the upper and lower ends of the support ring.

8. A plastic-encapsulated motor with an assembly reinforcement frame according to claim 5, characterized in that: A locking block is fixedly connected to the other end of the locking seat. The locking block has a semi-circular slot two corresponding to the semi-circular slot one. After the locking block is fixedly connected to the other end of the locking seat, the semi-circular slot one and the semi-circular slot two are spliced ​​together to form a locking groove, and the power cord is locked in the locking groove.

9. A plastic-encapsulated motor with an assembly reinforcement frame according to claim 8, characterized in that: The locking block is provided with fixing screws on both sides of the end near the snap-fit ​​seat. The snap-fit ​​seat is provided with a corresponding connecting block. The fixing screws pass through the connecting block and are screwed into a fixing nut. The fixing nut is tightened onto the connecting block.

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