A direct drive motor

Abstract

This utility model provides a direct drive motor, comprising: a housing with an installation space inside; a stator disposed within the installation space and fixedly connected to the inner wall of the housing; a rotor disposed within the receiving space enclosed by the stator; and a spacer disposed between the stator and the rotor to restrict direct contact between them. The technical problem solved by this utility model is that during the handling of a direct drive motor, because the rotor is housed inside the stator, it is susceptible to collisions with the stator due to the dynamic transportation environment, which can damage the structure of the rotor or stator and consequently affect the service life of the direct drive motor.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and more specifically, to a direct drive motor. Background Technology

[0002] The working principle of a direct-drive motor is relatively simple and direct. It typically consists of three parts: a stator, a rotor, and a sensor (such as an encoder). The stator contains the motor's coils and iron core; when the coils are energized, they generate a rotating magnetic field. The rotor, composed of magnets and copper coils, is mounted on the motor shaft. Under the influence of the rotating magnetic field, the magnets in the rotor rotate due to magnetic force. Since the rotor is directly mounted on the load, its rotation directly drives the rotation of the load, achieving the effect of direct drive.

[0003] However, at least one of the following problems exists in the relevant technology: during the handling of direct drive motors, since the rotor is fitted inside the stator, it is easily affected by the dynamic transportation environment, which can cause the rotor and stator to collide, thereby damaging the structure of the rotor or stator and affecting the service life of the direct drive motor. Utility Model Content

[0004] The technical problem solved by this utility model is that during the transportation of a direct drive motor, since the rotor is installed inside the stator, it is easily affected by the dynamic transportation environment, which can cause the rotor and stator to collide, thereby damaging the structure of the rotor or stator and affecting the service life of the direct drive motor.

[0005] To solve the above problems, this utility model provides a direct drive motor, which includes: a housing with an installation space inside; a stator disposed in the installation space and fixedly connected to the inner wall of the housing; a rotor disposed in the receiving space enclosed by the stator; and a spacer disposed between the stator and the rotor to restrict direct contact between the rotor and the stator.

[0006] Compared with existing technologies, the technical effects achieved by this solution are as follows: Specifically, by adding an isolator between the rotor and stator, the rotor and stator are effectively separated, preventing direct contact between them. Therefore, considering the actual transportation scenarios of handling direct-drive motors, since the rotor and stator are in a clearance fit, and the rotor is often housed within the space enclosed by the stator, instability is unavoidable during transportation. For example, when passing over a median strip, relative movement between the rotor and stator can easily occur. This solution, by placing an isolator in the gap between the rotor and stator, effectively prevents direct contact. Furthermore, the filling of the isolator reduces the gap between the rotor and stator, thereby reducing the stroke that could lead to a relative collision, further protecting both the stator and rotor.

[0007] In one embodiment of this invention, the isolation element is made of a flexible material and is arranged circumferentially around the rotor.

[0008] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by combining the material characteristics of the isolator, the impact force between the rotor and stator is further reduced, which plays a certain protective role, thereby reducing the impact risk during the transportation of the direct drive motor and improving the service life of the direct drive motor.

[0009] In one embodiment of this utility model, the isolation member includes an isolation portion and an extension portion connected to each other; the isolation portion is disposed at a mating gap formed between the rotor and the stator; the extension portion is exposed outside the mating gap; wherein the extension portion is provided with a first traction hole for traction.

[0010] Compared with existing technologies, the technical effect achieved by this solution is: it facilitates the removal of the isolator from between the stator and rotor through the designated first pull hole, thus reducing the difficulty of removing the isolator. For example, the isolator can be insulating paper. To prevent damage to the insulating paper at the first pull hole during removal, an annular metal or plastic ring can be installed at the location of the first pull hole. Therefore, when the pull rope passing through the first pull hole pulls the insulating paper, direct contact between the pull rope and the first pull hole is avoided. The aforementioned annular metal or plastic ring disperses the forward pulling force on the first pull hole.

[0011] In one embodiment of this utility model, the extension includes a first extension section and a second extension section. The first extension section is connected to one end of the isolation section and is provided with a second traction hole. The second extension section is connected to the other end of the isolation section and is provided with a third traction hole. The direct drive motor also includes a binding rope. A portion of the binding rope is disposed on the outer wall of the housing, and one end of the binding rope is connected to the second traction hole and the other end is connected to the third traction hole.

[0012] Compared with existing technologies, the technical effect achieved by adopting this technical solution is as follows: by setting a binding rope, the isolator is effectively bound between the stator and the rotor, preventing the isolator from moving relative to the rotor or stator during transportation and thus moving out from between the rotor or stator, thereby reducing the protective effect of the isolator.

[0013] In one embodiment of this utility model, a fixed seat is provided at one end of the housing, which is used to connect with the outer shell of the textile equipment; the textile equipment is provided with a drive shaft, one end of which extends into the outer shell and the other end extends out of the outer shell and is used to engage with the mating shaft hole of the rotor; wherein, the rotor is provided with a pin groove communicating with the mating shaft hole.

[0014] Compared to existing technologies, the technical advantages of this solution are: by directly driving the drive shaft with a direct-drive motor, traditional transmission mechanisms such as gearboxes and pulleys are eliminated, thereby improving drive efficiency. For example, a textile machine could be a carding machine.

[0015] In one embodiment of this utility model, the stator is fixed to the inner wall of the housing by potting compound; a cover plate is provided at the end of the housing away from the fixing seat to cover the exposed stator; wherein, from the fixing seat to the cover plate, the diameter of the mating shaft hole gradually decreases.

[0016] In one embodiment of this utility model, a waterproof connector is provided on the outside of the housing. The waterproof connector is used for the electrical connection wire group of the direct drive motor to pass through. The electrical connection wire group includes a power line, which is electrically connected to the stator.

[0017] In one embodiment of this utility model, a limiting hole is provided on the side wall of the housing; a limiting groove that mates with the limiting hole is provided at the part of the stator that abuts against the inner wall; the direct drive motor is also provided with a limiting component, which is used to connect the limiting hole and the limiting groove to restrict the movement of the stator relative to the housing.

[0018] In one embodiment of this utility model, the stator includes multiple stator laminations arranged in a circular pattern, and each stator lamination is provided with heat dissipation holes.

[0019] By adopting the technical solution of this utility model, the following technical effects can be achieved:

[0020] (1) Specifically, by adding an isolator between the rotor and the stator, the rotor and the stator are effectively separated to avoid direct contact between them. Therefore, considering the actual transportation scenario of handling direct drive motors, since the rotor and the stator are in a clearance fit and the rotor is often placed within the space enclosed by the stator, it is unavoidable that the vehicle will be unstable during transportation. For example, when passing through the isolation belt, the rotor and the stator are prone to relative movement. In this technical solution, by setting an isolator in the gap between the rotor and the stator, the direct contact between the rotor and the stator is effectively avoided. In addition, by filling the isolator, the gap between the rotor and the stator is reduced, thereby reducing the stroke that can cause relative collision between the two, and further protecting the stator and the rotor.

[0021] (2) It facilitates the removal of the isolator from the stator and rotor through the set pull hole, thus reducing the difficulty of removing the isolator. For example, the isolator can be insulating paper. To prevent the insulating paper from being damaged at the pull hole during the removal process, an annular metal or annular plastic ring can be set at the pull hole. Thus, when the pull rope passing through the pull hole pulls the insulating paper, the pull rope is prevented from directly contacting the pull hole. The aforementioned annular metal or annular plastic ring disperses the forward pulling force on the pull hole. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of the structure of a direct drive motor provided in an embodiment of this utility model;

[0024] Figure 2 for Figure 1 Schematic diagram of the middle isolation component;

[0025] Figure 3 for Figure 1 A structural diagram from another perspective;

[0026] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0027] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0028] Figure 6 for Figure 5 A magnified view of point C in the middle.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100. Direct drive motor; 101. Mating gap; 10. Housing; 11. Mounting base; 12. Limiting hole; 20. Stator; 21. Limiting groove; 30. Rotor; 31. Mating shaft hole; 40. Isolator; 41. Isolation section; 42. Extension section; 421. First traction hole; 422. Second traction hole; 423. Third traction hole; 424. First extension section; 425. Second extension section; 50. Waterproof connector; 60. Cover plate. Detailed Implementation

[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0032] See Figure 1 This is a structural schematic diagram of a direct-drive motor 100 provided in an embodiment of this utility model. Combined with... Figures 2-6 The direct drive motor 100 includes, for example, a housing 10, a stator 20, a rotor 30, and an isolator 40. The housing 10 has an installation space; the stator 20 is disposed in the installation space and is fixedly connected to the inner wall of the housing 10; the rotor 30 is disposed in the receiving space enclosed by the stator 20; the isolator 40 is disposed between the stator 20 and the rotor 30 to restrict direct contact between the rotor 30 and the stator 20.

[0033] Specifically, by adding an isolator 40 between the rotor 30 and the stator 20, the rotor 30 and stator 20 are effectively separated to prevent direct contact between them. Therefore, considering the actual transportation scenario of the direct drive motor 100, since the rotor 30 and stator 20 have a clearance fit, and the rotor 30 is often located within the space enclosed by the stator 20, it is unavoidable that the vehicle will experience instability during transportation. For example, when passing through a median strip, relative movement between the rotor 30 and stator 20 is likely to occur. This technical solution addresses this by placing an isolator 40 in the gap between the rotor 30 and stator 20, effectively preventing direct contact between them. Furthermore, the filling of the isolator reduces the gap between the rotor 30 and stator 20, thereby reducing the stroke that could lead to a relative collision, further protecting both the stator 20 and rotor 30.

[0034] Furthermore, before using the direct drive motor 100, the isolator 40 needs to be removed from between the stator 20 and the rotor 30. After energizing the direct drive motor 100, the ease with which the isolator 40 is removed is used to determine whether the fit between the stator 20 and the rotor 30 meets the requirements for safe operation. Specifically, the isolator 40 can be, for example, insulating paper. During the removal of the insulating paper, if the removal resistance at the first gap between the stator 20 and the rotor 30 is greater than the removal resistance at the second gap, it indicates that the fit between the stator 20 and the rotor 30 at the corresponding first gap does not meet the requirements for safe operation. Adjustments to the direct drive motor 100 are necessary, including adjusting the relative positions of the stator 20 and the rotor 30, to prevent the parts of the stator 20 and the rotor 30 at the first gap from contacting each other during subsequent operation of the direct drive motor 100, which could cause severe wear and reduce the efficiency of the direct drive motor 100.

[0035] Preferably, the isolator 40 is made of a flexible material and is arranged circumferentially around the rotor 30. Combined with the material characteristics of the isolator 40, the impact force between the rotor 30 and the stator 20 is further reduced, providing a certain degree of protection, thereby reducing the impact risk during the transportation of the direct drive motor 100 and improving the service life of the direct drive motor 100.

[0036] Preferably, the isolation member 40 includes an isolation portion 41 and an extension portion 42 connected to each other; the isolation portion 41 is disposed at a mating gap 101 formed between the rotor 30 and the stator 20; the extension portion 42 is exposed outside the mating gap 101; wherein the extension portion 42 is provided with a first traction hole 421 for traction.

[0037] The design facilitates the removal of the isolating element 40 from between the stator 20 and the rotor 30 via the first pull hole 421, thus reducing the difficulty of removing the isolating element 40. For example, the isolating element 40 can be insulating paper. To prevent damage to the insulating paper at the first pull hole 421 during the removal process, an annular metal or plastic ring can be provided at the location of the first pull hole 421. Thus, when the pull rope passing through the first pull hole 421 pulls the insulating paper, direct contact between the pull rope and the first pull hole 421 is avoided. The aforementioned annular metal or plastic ring disperses the forward pulling force on the first pull hole 421.

[0038] Preferably, the extension 42 includes a first extension section and a second extension section. The first extension section is connected to one end of the isolation section 41 and is provided with a second traction hole 422. The second extension section is connected to the other end of the isolation section 41 and is provided with a third traction hole 423. The direct drive motor 100 also includes a restraint rope. A portion of the restraint rope is disposed on the outer wall of the housing 10, and one end of the restraint rope is connected to the second traction hole 422 and the other end is connected to the third traction hole 423.

[0039] By setting a restraining rope, the isolator 40 is effectively tied between the stator 20 and the rotor 30, preventing the isolator 40 from moving relative to the rotor 30 or the stator 20 during transportation, thus avoiding it from moving out of the rotor 30 or the stator 20 and reducing the protective effect of the isolator 40.

[0040] Preferably, one end of the housing 10 is provided with a fixing seat 11 for connecting to the outer shell of the textile equipment; the textile equipment is provided with a drive shaft, one end of which extends into the outer shell and the other end extends out of the outer shell, and is used to mate with the mating shaft hole 31 of the rotor 30; wherein, the rotor 30 is provided with a pin groove communicating with the mating shaft hole 31. The drive shaft is directly driven by a direct drive motor 100, eliminating the need for traditional transmission mechanisms such as gearboxes and pulleys, thereby improving drive efficiency. For example, the textile equipment can be a carding machine.

[0041] Preferably, the stator 20 is fixed to the inner wall of the housing 10 by potting compound; a cover plate 60 is provided at the end of the housing 10 away from the fixing seat 11 to cover the stator 20 from being exposed; wherein, from the fixing seat 11 to the cover plate 60, the diameter of the mating shaft hole 31 gradually decreases.

[0042] Preferably, the exterior of the housing 10 is provided with a waterproof connector 50, which is used for the electrical connection wire group of the direct drive motor 100 to pass through; wherein, the electrical connection wire group includes a power line, which is electrically connected to the stator 20.

[0043] Specifically, by setting up a waterproof connector 50, it is convenient to pass the electrical connection wire group of the direct drive motor 100 through the waterproof connector 50 from the inside of the housing 10 to the outside of the housing 10. It can be understood that the waterproof connector 50 is a wire passage structure. In order to effectively prevent water, moisture, dust and other contaminants from entering the motor and avoid short circuits, corrosion or insulation failure caused by humid environment, dust or liquid splashes, after the electrical connection wire group passes through the waterproof connector 50, sealant can be filled into the waterproof connector 50 to further improve the sealing effect of the opening.

[0044] Preferably, the side wall of the housing 10 has a limiting hole 12; the part of the stator 20 that abuts against the inner wall has a limiting groove 21 that mates with the limiting hole 12; the direct drive motor 100 also has a limiting member, which connects the limiting hole 12 and the limiting groove 21 to restrict the movement of the stator 20 relative to the housing 10. This further improves the fixing effect of the stator 20 on the housing 10 and prevents the stator 20 from rotating relative to the housing 10.

[0045] Preferably, the stator 20 includes multiple stator laminations arranged in a circular pattern, and each stator lamination is provided with heat dissipation holes.

[0046] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A direct drive motor, characterized by, The direct drive motor includes: Housing (10), wherein an installation space is provided inside the housing (10); Stator (20), the stator (20) is disposed in the installation space and is fixedly connected to the inner wall of the housing (10); Rotor (30), the rotor (30) is disposed within the receiving space enclosed by the stator (20); An isolator (40) is disposed between the stator (20) and the rotor (30) to restrict direct contact between the rotor (30) and the stator (20).

2. The direct-drive motor according to claim 1, characterized in that, The isolation element (40) is made of a flexible material and is arranged circumferentially around the rotor (30).

3. The direct-drive motor according to claim 1, characterized in that, The isolation member (40) includes an isolation portion (41) and an extension portion (42) that are connected to each other; The isolation portion (41) is disposed at the mating gap (101) formed between the rotor (30) and the stator (20); the extension portion (42) is exposed outside the mating gap (101); The extension (42) is provided with a first traction hole (421) for traction.

4. The direct-drive motor according to claim 3, characterized in that, The extension (42) includes a first extension section and a second extension section. The first extension section is connected to one end of the isolation section (41), and the first extension section is provided with a second traction hole (422). The second extension is connected to the other end of the isolation section (41), and the second extension is provided with a third traction hole (423); The direct drive motor also includes a restraint rope, part of which is disposed on the outer wall of the housing (10), and one end of the restraint rope is connected to the second traction hole (422) and the other end is connected to the third traction hole (423).

5. The direct-drive motor according to claim 1, characterized in that, One end of the housing (10) is provided with a fixing seat (11), which is used to connect with the outer shell of the textile equipment; The textile equipment is provided with a drive shaft, one end of which extends into the housing and the other end extends out of the housing, and is used to mate with the mating shaft hole (31) of the rotor (30); The rotor (30) is provided with a pin groove that communicates with the mating shaft hole (31).

6. The direct-drive motor according to claim 5, characterized in that, The stator (20) is fixed to the inner wall of the housing (10) by potting compound; The end of the housing (10) away from the fixed base (11) is provided with a cover plate (60) to cover the exposed stator (20); In the direction from the fixed seat (11) to the cover plate (60), the diameter of the mating shaft hole (31) gradually decreases.

7. The direct-drive motor according to claim 1, characterized in that, The outer side of the housing (10) is provided with a waterproof connector (50), which is used to pass through the electrical connection wire group of the direct drive motor; The electrical connection line group includes a power line, which is electrically connected to the stator (20).

8. The direct-drive motor according to claim 1, characterized in that, The side wall of the housing (10) is provided with a limiting hole (12); the part of the stator (20) that abuts against the inner wall is provided with a limiting groove (21) that cooperates with the limiting hole (12); The direct drive motor is also provided with a limiting member, which is used to connect the limiting hole (12) and the limiting groove (21) to restrict the movement of the stator (20) relative to the housing (10).

9. The direct-drive motor according to claim 1, characterized in that, The stator (20) includes multiple stator laminations arranged in a circular pattern, and each stator lamination is provided with heat dissipation holes.

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