A hub geared motor with a protective structure and a vehicle using it.

Abstract

This utility model relates to a hub-mounted geared motor with a protective structure and a vehicle using the same. The hub-mounted geared motor includes a fixed output shaft and a housing rotatably mounted on the fixed output shaft. A fixed base and a motor structure are disposed within the housing. The fixed base is fixedly connected to the fixed output shaft. The motor structure is mounted on the fixed base and located on one axial side of the fixed output shaft. The motor structure drives the housing to rotate. The hub-mounted geared motor also includes a protective sleeve, which is mounted on the fixed base and fitted between the motor structure and the housing. According to the technical solution of this utility model, when the housing is subjected to external forces, such as bumps or drops, the protective sleeve can withstand the impact force on the housing, thereby reducing the radial force on the motor structure and improving the service life of the motor structure.

Description

Technical Field

[0001] This utility model relates to the field of hub motor technology, and in particular to a hub geared motor with a protective structure and a vehicle using the same. Background Technology

[0002] Hub geared motors are generally used on vehicle wheels. Existing hub geared motors include a fixed output shaft and a housing rotatably mounted on the fixed output shaft. The housing contains a mounting base and a motor structure. The mounting base is fixedly connected to the fixed output shaft, and the motor structure is mounted on the mounting base and located on one axial side of the fixed output shaft. The motor structure drives the housing to rotate.

[0003] In this case, there is no protection between the motor structure and the housing. When the housing is subjected to external forces, such as bumps or drops, the motor structure is easily impacted, causing the motor structure to bear a large radial force, which in turn affects the service life of the motor structure. Utility Model Content

[0004] In view of this, the present invention provides a hub geared motor with a protective structure and a vehicle using it, mainly solving the technical problem in the prior art that when the housing is subjected to external forces, such as bumps or drops, the motor structure is easily impacted, resulting in the motor structure bearing a large radial force, thereby affecting the service life of the motor structure.

[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:

[0006] An embodiment of this utility model provides a hub geared motor with a protective structure, which includes a fixed output shaft and a housing rotatably sleeved on the fixed output shaft. The housing is provided with a fixed seat and a motor structure. The fixed seat is fixedly connected to the fixed output shaft. The motor structure is disposed on the fixed seat and located on one axial side of the fixed output shaft. The motor structure is used to drive the housing to rotate.

[0007] The hub reduction motor also includes a protective sleeve, which is disposed on the fixed base and sleeved between the motor structure and the housing.

[0008] In some embodiments, the fixing base has a protrusion, and the inner side of the protrusion has a through hole;

[0009] The motor structure has a stator, a rotor, a rotor shaft, and a connecting member. The stator is fixed on the protrusion, the rotor shaft passes through the through hole and is connected to the housing. The rotor is sleeved on the outside of the stator and is connected to the rotor shaft through the connecting member. The stator is used to drive the rotor to rotate, and the rotor drives the rotor shaft to rotate through the connecting member, so that the rotor shaft drives the housing to rotate.

[0010] The protective sleeve is sleeved on the outside of the rotor and connected to the motor structure.

[0011] In some embodiments, the protective sleeve has a first end and a second end opposite to each other; the first end is an open end and the second end is a closed end, so as to form a groove inside the protective sleeve; the protective sleeve is fixed to the fixed base through the first end, and the stator, the rotor and the connecting member are all located in the groove.

[0012] In some embodiments, the end of the rotor shaft opposite to the fixed output shaft is opposite to the bottom surface of the groove, and there is no bearing support between them.

[0013] In some embodiments, a bearing is provided between the protective sleeve and the housing, and the protective sleeve provides support to the housing through the bearing.

[0014] In some embodiments, the protective sleeve is provided with a protrusion, and a bearing mounting groove is provided on the side of the housing opposite to the fixed output shaft. The protrusion extends into the bearing mounting groove, and the bearing is installed between the protrusion and the groove wall of the bearing mounting groove.

[0015] In some embodiments, the hub geared motor further includes a support shaft; the support shaft and the fixed output shaft are distributed on opposite sides of the hub geared motor, and the axes of the support shaft and the fixed output shaft coincide.

[0016] The support shaft is mounted on the protective sleeve, and the housing is rotatable relative to the support shaft.

[0017] In some embodiments, when a bearing is provided between the protective sleeve and the housing, the protective sleeve provides support to the housing through the bearing; and the protective sleeve has a protrusion, and the housing has a bearing mounting groove on the side opposite to the fixed output shaft, the protrusion extends into the bearing mounting groove, and the bearing is installed between the protrusion and the groove wall of the bearing mounting groove, the protrusion has a mounting hole, and the support shaft is fitted into the mounting hole.

[0018] This utility model also provides a vehicle that includes the hub reduction motor described in any one of the above descriptions.

[0019] In some implementations, the vehicle is an electric vehicle, an electric skateboard, a wheelchair, a robotic hub vehicle, or an industrial AGV vehicle.

[0020] By employing the above technical solution, the hub geared motor with protective structure of this utility model and the vehicle using it have at least the following beneficial effects:

[0021] This utility model provides protection for the motor structure by using a protective sleeve fitted between the motor structure and the housing. When the housing is subjected to external forces, such as bumps or drops, the protective sleeve can withstand the impact force on the housing, thereby reducing the radial force on the motor structure and improving the service life of the motor structure.

[0022] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 the structures shown in these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional view of a hub geared motor with a protective structure provided in one embodiment of the present invention.

[0025] Reference numerals: 1. Housing; 2. Fixed output shaft; 3. Fixed base; 4. Stator; 5. Rotor; 6. Connecting piece; 7. Rotor shaft; 8. First bearing; 9. Gear transmission mechanism; 10. Transmission gear; 11. Connecting frame; 12. Protective sleeve; 13. Bearing; 14. Support shaft; 31. Protrusion; 45. Motor structure; 120. Groove; 121. First end; 122. Second end; 123. Protrusion; 130. Mounting hole; 301. Through hole; 12b. Bottom surface of the groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] like Figure 1 As shown in the figure, one embodiment of this utility model proposes a hub geared motor with a protective structure, which includes a fixed output shaft 2 and a housing 1 rotatably sleeved on the fixed output shaft 2. The housing 1 is provided with a fixed seat 3 and a motor structure 45. The fixed seat 3 is fixedly connected to the fixed output shaft 2. A fixed connecting frame 11 can be fitted onto the fixed output shaft 2, and the fixed seat 3 is fixedly connected to the fixed output shaft 2 through the connecting frame 11.

[0030] The aforementioned motor structure 45 is mounted on the fixed base 3 and located on one axial side of the fixed output shaft 2. The motor structure 45 is used to drive the housing 1 to rotate. The hub geared motor also includes a protective sleeve 12, which is mounted on the fixed base 3 and can be fixedly connected to the fixed base 3, for example, by screws. The protective sleeve 12 is fitted between the motor structure 45 and the housing 1.

[0031] In the above example, the sleeve 12 fitted between the motor structure 45 and the housing 1 can protect the motor structure 45. When the housing 1 is subjected to external force, such as bumps or falls, the sleeve 12 can withstand the impact force on the housing 1, thereby reducing the radial force on the motor structure 45 and improving the service life of the motor structure 45.

[0032] In some embodiments, the service life of the aforementioned motor structure 45 can be extended by nearly 2 times through the above-described technical solution.

[0033] In order to achieve the purpose of fitting the aforementioned protective sleeve 12 between the motor structure 45 and the housing 1, in some embodiments, such as Figure 1 As shown, the aforementioned fixed base 3 has a protrusion 31, which can be integrally formed on the fixed base 3. The inner side of the protrusion 31 has a through hole 301. The aforementioned motor structure 45 has a stator 4, a rotor 5, a rotor shaft 7, and a connecting member 6. The stator 4 is fixed on the protrusion 31. The rotor shaft 7 passes through the through hole 301 and is connected to the housing 1 in a driving connection. The rotor 5 is sleeved on the outside of the stator 4, and the rotor 5 is connected to the rotor shaft 7 through the aforementioned connecting member 6. The stator 4 is used to drive the rotor 5 to rotate, and the rotor 5 drives the rotor shaft 7 to rotate through the connecting member 6, so that the rotor shaft 7 drives the housing 1 to rotate. The aforementioned protective sleeve 12 is sleeved on the outside of the rotor 5 and connected to the motor structure 45.

[0034] In the above example, since the protective sleeve 12 is sleeved on the outside of the rotor 5, the protective sleeve 12 can provide protection for both the inner rotor 5 and the inner stator 4 of the rotor 5, thereby reducing the radial impact force on the rotor 5 and the inner stator 4 of the rotor 5.

[0035] In some implementations, such as Figure 1 As shown, the inner side of the aforementioned housing 1 is provided with transmission teeth 10. A fixed gear ring with the aforementioned transmission teeth 10 can be fitted onto the inner side of the housing 1. The aforementioned rotor shaft 7 is connected to the transmission teeth 10 via a gear transmission mechanism 9. The gear transmission mechanism 9 is disposed between the fixed base 3 and the aforementioned connecting frame 11. The gear transmission mechanism 9 can be a planetary gear transmission mechanism. The specific structure of the planetary gear transmission mechanism 9 is prior art and will not be described in detail here.

[0036] like Figure 1 As shown, a first bearing 8 can be fitted between the aforementioned rotor shaft 7 and the through hole 301. The fixed seat 3 provides support for the rotor shaft through the first bearing 8 to improve the rotational stability of the rotor shaft 7. The axes of the rotor shaft 7 and the aforementioned fixed output shaft 2 coincide, so that the housing 1 can rotate around the fixed output shaft 2.

[0037] In some implementations, such as Figure 1 As shown, the aforementioned protective sleeve 12 has a first end 121 and a second end 122. The first end 121 is an open end, and the second end 122 is a closed end, forming a groove 120 inside the protective sleeve 12. The protective sleeve 12 is fixed to the fixing base 3 via the first end 121, and the first end 121 of the protective sleeve 12 and the fixing base 3 can be fixedly connected by screws. The aforementioned stator 4, rotor 5, and connecting member 6 are all located within the groove 120 inside the protective sleeve 12.

[0038] In the above example, since the casing 12 is barrel-shaped, by placing the stator 4, rotor 5 and connector 6 inside the barrel-shaped casing 12, the bottom surface of the casing 12 can also provide protection for the motor structure 45, thus further improving the protection performance of the casing 12 for the motor structure 45.

[0039] In some implementations, such as Figure 1 As shown, the end of the rotor shaft 7 that is away from the fixed output shaft 2 is opposite to the bottom surface 12b of the groove, and there is no bearing 13 supporting the two. In this way, when the housing 1 is subjected to external force, the force impact on the tail of the rotor shaft 7 can be reduced, thereby improving the running stability and service life of the rotor shaft 7.

[0040] In some implementations, such as Figure 1 As shown, a bearing 13 is provided between the aforementioned protective sleeve 12 and the housing 1. The protective sleeve 12 provides support to the housing 1 through the bearing 13, which can improve the stability of the rotation of the housing 1.

[0041] In order to install the first bearing 8 described above, in some embodiments, such as Figure 1 As shown, the aforementioned protective sleeve 12 is provided with a protrusion 123, and a bearing mounting groove is provided on the side of the housing 1 facing away from the fixed output shaft 2. The protrusion 123 extends into the bearing mounting groove, and the bearing 13 is installed between the protrusion 123 and the groove wall of the bearing mounting groove.

[0042] In the above example, by installing the bearing 13 inside the housing 1 on the side opposite to the fixed output shaft 2, the bearing 13, in conjunction with the aforementioned fixed output shaft 2, can improve the rotational stability of the housing 1.

[0043] In some embodiments, when the sleeve 12 has a first end 121 and a second end 122 opposite to each other, and the first end 121 is an open end and the second end 122 is a closed end, so as to form a groove 120 inside the sleeve 12, the protrusion 123 mentioned above can be located at the second end 122 of the sleeve 12. The protrusion 123 can be integrally formed on the second end 122 of the sleeve 12 to improve the connection stability between the protrusion 123 and the sleeve 12.

[0044] In some implementations, such as Figure 1 As shown, the aforementioned hub geared motor may further include a support shaft 14; the support shaft 14 and the aforementioned fixed output shaft 2 are distributed on opposite sides of the hub geared motor, and the axes of the support shaft 14 and the fixed output shaft 2 coincide. The support shaft 14 is mounted on the casing 12, and the housing 1 is rotatable relative to the support shaft 14.

[0045] In the above example, the support shaft 14 and the fixed output shaft 2 work together to form a dual-shaft structure. Compared with the single-shaft structure, this dual-shaft structure can improve the stability of the housing 1 rotation and effectively reduce the noise and vibration during motor operation.

[0046] In order to mount the support shaft 14 on the casing 12, in some embodiments, such as Figure 1 As shown, when a bearing 13 is provided between the protective sleeve 12 and the housing 1, the protective sleeve 12 provides support to the housing 1 through the bearing 13; and the protective sleeve 12 is provided with a protrusion 123, and a bearing mounting groove is provided on the side of the housing 1 facing away from the fixed output shaft 2. The protrusion 123 extends into the bearing mounting groove, and the bearing 13 is installed between the protrusion 123 and the groove wall of the bearing mounting groove. The aforementioned protrusion 123 may be provided with a mounting hole 130, and the aforementioned support shaft 14 is sleeved in the mounting hole 130. For example, the two can be sleeved and fixed by interference fit.

[0047] In some embodiments, the aforementioned fixed output shaft 2 can be a hollow shaft to facilitate wiring. The aforementioned support shaft 14 can be a solid shaft to improve structural strength.

[0048] In some embodiments, the present invention also provides a vehicle that may include any of the above-described hub-mounted geared motors. Because the vehicle uses the aforementioned hub-mounted geared motor, the protective sleeve 12 fitted between the motor structure 45 and the housing 1 can protect the motor structure 45. When the housing 1 is subjected to external forces, such as bumps or falls, the protective sleeve 12 can withstand the impact force on the housing 1, thereby reducing the radial force on the motor structure 45 and improving the service life of the motor structure 45.

[0049] In some implementations, the aforementioned vehicle may be an electric vehicle, an electric skateboard, a wheelchair, a robotic hub vehicle, or an industrial AGV vehicle, etc.

[0050] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A hub geared motor with a protective structure, characterized in that, The device includes a fixed output shaft (2) and a housing (1) rotatably mounted on the fixed output shaft (2). The housing (1) contains a fixed seat (3) and a motor structure (45). The fixed seat (3) is fixedly connected to the fixed output shaft (2). The motor structure (45) is mounted on the fixed seat (3) and located on one axial side of the fixed output shaft (2). The motor structure (45) is used to drive the housing (1) to rotate. The hub reduction motor also includes a protective sleeve (12), which is disposed on the fixed base (3) and sleeved between the motor structure (45) and the housing (1).

2. The hub geared motor with a protective structure as described in claim 1, characterized in that, The fixing base (3) has a protrusion (31), and the inner side of the protrusion (31) has a through hole (301); The motor structure (45) has a stator (4), a rotor (5), a rotor shaft (7), and a connector (6). The stator (4) is fixed on the protrusion (31). The rotor shaft (7) passes through the through hole (301) and is connected to the housing (1) in a transmission manner. The rotor (5) is sleeved on the outside of the stator (4) and is connected to the rotor shaft (7) through the connector (6). The stator (4) is used to drive the rotor (5) to rotate. The rotor (5) drives the rotor shaft (7) to rotate through the connector (6), so that the rotor shaft (7) drives the housing (1) to rotate. The protective sleeve (12) is sleeved on the outside of the rotor (5) and connected to the motor structure (45).

3. The hub geared motor with a protective structure as described in claim 2, characterized in that, The protective sleeve (12) has a first end (121) and a second end (122) opposite to each other; the first end (121) is an open end and the second end (122) is a closed end, so as to form a groove (120) inside the protective sleeve (12); the protective sleeve (12) is fixed on the fixed base (3) through the first end (121), and the stator (4), the rotor (5) and the connector (6) are all located in the groove (120).

4. The hub geared motor with a protective structure as described in claim 3, characterized in that, The end of the rotor shaft (7) that is away from the fixed output shaft (2) is opposite to the bottom surface (12b) of the groove, and there is no bearing (13) supporting the two.

5. The hub geared motor with a protective structure as described in any one of claims 1-4, characterized in that, A bearing (13) is provided between the protective sleeve (12) and the housing (1), and the protective sleeve (12) provides support to the housing (1) through the bearing (13).

6. The hub geared motor with a protective structure as described in claim 5, characterized in that, The sleeve (12) is provided with a protrusion (123), and the inside of the housing (1) on the side opposite to the fixed output shaft (2) is provided with a bearing mounting groove. The protrusion (123) extends into the bearing mounting groove, and the bearing (13) is installed between the protrusion (123) and the groove wall of the bearing mounting groove.

7. The hub geared motor with a protective structure as described in any one of claims 1-4 and 6, characterized in that, The hub reduction motor also includes a support shaft (14); the support shaft (14) and the fixed output shaft (2) are distributed on opposite sides of the hub reduction motor, and the axes of the support shaft (14) and the fixed output shaft (2) coincide. The support shaft (14) is disposed on the protective sleeve (12), and the housing (1) is rotatable relative to the support shaft (14).

8. The hub geared motor with a protective structure as described in claim 7, characterized in that, When a bearing (13) is provided between the protective sleeve (12) and the housing (1), the protective sleeve (12) provides support to the housing (1) through the bearing (13); and a protrusion (123) is provided on the protective sleeve (12), and a bearing mounting groove is provided on the side of the housing (1) away from the fixed output shaft (2), the protrusion (123) extends into the bearing mounting groove, and the bearing (13) is installed between the protrusion (123) and the groove wall of the bearing mounting groove, the protrusion (123) is provided with a mounting hole (130), and the support shaft (14) is fitted into the mounting hole (130).

9. A vehicle, characterized in that, The wheel hub geared motor includes any one of claims 1 to 8.

10. The vehicle as claimed in claim 9, characterized in that, The vehicle may be an electric vehicle, an electric skateboard, a wheelchair, a robot wheelchair vehicle, or an industrial AGV vehicle.

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