Gear set installation structure and brushless motor

Abstract

The utility model relates to the technical field of motors, and discloses a mounting structure of a gear set and a brushless motor. The mounting structure of the gear set includes a first housing, a cover assembly, and a gear assembly. The first housing is provided with a mounting cavity for mounting a rotor assembly; the cover assembly is fixedly connected to the bottom of the first housing, and a connector is provided on the outer periphery of the cover assembly; the gear assembly includes a gear housing and a gear body, and the gear body is arranged in a device cavity formed inside the gear housing. The gear housing is covered with the cover assembly, abuts against the bottom of the first housing, and is connected to the cover assembly through a connector. The mounting structure of the gear set of the utility model realizes further compression of the space of the gear box and the brushless motor, and reduces the installation time of the overall structure.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to an installation structure of a gear set and a brushless motor. Background Art

[0002] As a high-efficiency motor, brushless DC motor has the characteristics of small size, long life, ultra-high speed operation and low electromagnetic interference. It is widely used in more and more fields and is deeply loved by major industries. In related technologies, in order to increase the output torque of the motor, a reduction gearbox is usually added to increase the output torque of the motor component. The combination of motor and gearbox is also a common structural form, which also means that brushless motors will also be matched with gearboxes for more extensive applications.

[0003] At present, the bearings of brushless motors are installed on the front cover of the motor, and the bearings are used to be sleeved on the rotor of the motor. The gearbox of the motor is connected to the rotor of the motor, and the gearbox is fixedly connected to the front cover of the motor through a fixing plate. The two are stacked. However, for some equipment with smaller available space, the space between the gearbox and the motor cannot be further compressed, which ultimately affects its scope of use and cannot be applied to equipment with smaller available space. Moreover, since the gearbox is fixedly connected to the front cover of the motor through a fixing plate, the overall structural components are more and the installation takes a longer time.

[0004] Therefore, how to further compress the space of the gearbox and the brushless motor and reduce the installation time of the overall structure is one of the main improvement directions. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a mounting structure of a gear set and a brushless motor, which further compresses the space of the gear box and the brushless motor and reduces the installation time of the overall structure.

[0006] The technical effects to be achieved by the utility model are achieved through the following aspects:

[0007] In a first aspect, the utility model provides a mounting structure of a gear set, comprising:

[0008] A first housing is formed with an installation cavity for installing a rotor assembly;

[0009] A cover plate assembly, fixedly connected to the bottom of the first shell, and a connecting piece is provided on the outer periphery of the cover plate assembly;

[0010] The gear assembly comprises a gear housing and a gear body, wherein the gear body is arranged in a device cavity formed inside the gear housing, and the gear housing is covered on the cover plate assembly, abuts against the bottom of the first housing, and is connected to the cover plate assembly through the connecting piece.

[0011] In some implementations, the connecting member is provided with a first connecting hole, and the peripheral wall of the gear housing is provided with a second connecting hole, and the first connecting hole and the second connecting hole are screwed together by a bolt to connect the gear housing to the connecting member.

[0012] In this implementation, the bolt is screwed into the first connection hole and the second connection hole at the same time to connect the gear housing to the connecting member, so that the connection between the gear housing and the connecting member is more stable.

[0013] In some implementations, the cover plate assembly is connected to a side of the gear housing and is bent to form a support member for axially limiting the gear body.

[0014] In this implementation, the support member abuts against the gear body, exerting a supporting force on the gear body, making the gear body more stable when rotating, and avoiding shaking of the gear body when rotating, thereby affecting the normal operation of the brushless motor.

[0015] In some implementations, the support member is provided with a support plane for axially limiting the gear body, and a width of the support plane is greater than a width of the support member.

[0016] In some implementations, the bending angle of the support member is 90°.

[0017] In some implementations, a plurality of the support members and a plurality of the connection members are formed at intervals on the periphery of the cover plate assembly.

[0018] In this implementation, four support members and four connecting members are provided respectively and are arranged at intervals, so that the connection between the support member and the gear body, and between the connecting member and the gear housing is more stable.

[0019] In some implementations, the cover plate assembly further includes a bearing, the bearing is sleeved on the rotor assembly, and the cover plate assembly is connected to the bearing.

[0020] In this implementation, the cover plate assembly is sleeved on the bearing, reducing the friction between the rotor assembly and the cover plate assembly, making the rotor assembly rotate more smoothly and thus reducing energy consumption. In addition, since the cover plate assembly is sleeved on the bearing, the overall structure is more compact, thereby reducing the overall space occupied by the brushless motor.

[0021] In some implementations, the gear body includes a motor gear and a planetary gear, the motor gear is sleeved on the rotor assembly, and the planetary gear surrounds and abuts against the motor gear.

[0022] In some implementations, an annular gasket is further included, wherein the annular gasket is respectively connected to the connecting member, the supporting member and the planetary gear, and the motor gear passes through the annular gasket and abuts against the planetary gear.

[0023] In this implementation, an annular gasket is provided to improve the connection stability between the planetary gear and the connecting member and the supporting member, so that the planetary gear rotates more smoothly and avoids shaking when the planetary gear rotates, thereby affecting the normal operation of the brushless motor.

[0024] In a second aspect, the utility model provides a brushless motor, including a stator assembly, a second housing and a mounting structure of a gear set, wherein the second housing and the first housing together form an installation cavity for installing the stator assembly, and the stator assembly is sleeved on the rotor assembly.

[0025] In summary, the utility model has at least the following benefits:

[0026] The installation structure of the gear set provided by the utility model improves the motor front cover plate structure and reduces the fixing plate components, so that the gear housing is directly covered on the cover plate assembly, abuts against the bottom of the first housing, and is fixedly connected to the cover plate assembly through a connecting piece, so that the gear assembly and the first housing are fixed in one piece, thereby reducing the occupied space of the overall structure, further compressing the space of the overall structure, and because the gear assembly and the first housing are fixed in one piece, the overall structure is compact and the installation time is reduced. As a result, the space of the gear box and the brushless motor is further compressed, and the installation time of the overall structure is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the installation structure of the gear set in some embodiments;

[0028] Figure 2 for Figure 1 Another perspective structural schematic diagram of the installation structure of the gear set shown;

[0029] Figure 3 for Figure 2 A cross-sectional schematic diagram of the mounting structure of the gear set shown;

[0030] Figure 4 for Figure 2 A schematic structural diagram of the cover assembly shown;

[0031] Figure 5 is a cross-sectional schematic diagram of a bearing and cover plate assembly of some embodiments;

[0032] Figure 6 Schematic diagrams of the structures of the annular gasket, the gear assembly and the cover plate assembly in some embodiments;

[0033] Figure 7 It is a schematic diagram of the structure of the brushless motor of some embodiments;

[0034] Figure 8 for Figure 7 A cross-sectional schematic diagram of a brushless motor is shown.

[0035] Markings in the figure:

[0036] 10. Installation structure of gear set;

[0037] 100, first housing; 101, mounting cavity;

[0038] 200, rotor assembly;

[0039] 300, cover plate assembly; 310, connecting member; 311, first connecting hole; 320, supporting member; 321, supporting plane; 330, bearing;

[0040] 400, gear assembly; 410, gear housing; 411, device cavity; 412, second connecting hole; 413, bolt; 420, gear body; 421, motor gear; 422, planetary gear;

[0041] 500, annular gasket;

[0042] 20. Brushless motor;

[0043] 600, stator assembly;

[0044] 700. Second shell. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0046] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0047] Embodiment 1:

[0048] Please see attached Figures 1 to 4The mounting structure 10 of the gear set of the present invention includes a first housing 100 , a cover plate assembly 300 and a gear assembly 400 .

[0049] Please combine Figure 1 and Figure 2 , Figure 1 and Figure 2 The schematic diagram shows the structural relationship between the first housing 100, the cover assembly 300 and the gear assembly 400 in the embodiment of the utility model. Specifically, the first housing 100 is formed with an installation cavity 101 for installing the rotor assembly 200; the cover assembly 300 is fixedly connected to the bottom of the first housing 100, and a connector 310 is provided on the outer periphery of the cover assembly 300; the gear assembly 400 includes a gear housing 410 and a gear body 420, and the gear body 420 is arranged in a device cavity 411 formed inside the gear housing 410, and the gear housing 410 is covered on the cover assembly 300, abuts against the bottom of the first housing 100, and is connected to the cover assembly 300 through the connector 310.

[0050] In this embodiment, the first housing 100 is used to protect the rotor assembly 200 to prevent the rotor assembly 200 from scratching against external equipment when rotating, thereby causing wear or failure. The gear housing 410 is connected to the cover assembly 300 through the connector 310 and abuts against the bottom of the first housing 100, so that the structure between the gear assembly 400 and the first housing 100 is more compact, thereby reducing the occupied space of the overall structure; and, since the gear housing 410 is covered on the cover assembly 300, the cover assembly 300 is prevented from being exposed to the outside and causing wear and tear on external equipment, thereby increasing the service life of the cover assembly 300; the connector 310 and the cover assembly 300 are integrally formed, reducing production costs while reducing assembly time. It can be understood that in some other embodiments, the connector 310 and the cover assembly 300 are not limited to being formed in one day, and can also be connected together by welding.

[0051] The above-mentioned gear assembly installation structure 10 improves the motor front cover structure and reduces the fixed plate components, so that the gear housing 410 is directly covered on the cover assembly 300 and abuts against the bottom of the first housing 100, and is fixedly connected to the cover assembly 300 through the connecting member 310, so that the gear assembly 400 and the first housing 100 are fixed in one piece, thereby reducing the occupied space of the overall structure and further compressing the space of the overall structure. In addition, since the gear assembly 400 and the first housing 100 are fixed in one piece, the overall structure is compact and the installation time is reduced. As a result, the space of the gear box and the brushless motor 20 is further compressed, and the installation time of the overall structure is reduced.

[0052] In some preferred embodiments, the connecting member 310 is provided with a first connecting hole 311, and the peripheral wall of the gear housing 410 is provided with a second connecting hole 412, and the first connecting hole 311 and the second connecting hole 412 are screwed together by a bolt 413 to connect the gear housing 410 to the connecting member 310. This makes the connection between the gear housing 410 and the connecting member 310 more stable. In addition, when the gear body 420 fails, the bolt 413 can be directly removed to separate the gear housing 410 from the connecting member 310, so that the gear body 420 can be repaired or replaced, thereby improving the repair efficiency of the gear body 420.

[0053] In some preferred embodiments, see Figure 3 , Figure 3 The structural relationship between the support member 320 and the gear body 420 in the embodiment of the utility model is illustrated. Specifically, the cover assembly 300 is connected to the side of the gear housing 410 and is bent to form a support member 320 for axially limiting the gear body 420. The support member 320 abuts against the gear body 420, exerts a supporting force on the gear body 420, makes the gear body 420 more stable when rotating, and avoids shaking when the gear body 420 rotates, thereby affecting the normal operation of the brushless motor 20.

[0054] In some preferred embodiments, see Figure 4 , Figure 4 The specific structure of the support member 320 in the embodiment of the utility model is illustrated. Specifically, the support member 320 is provided with a support plane 321 for axially limiting the gear body 420, and the width of the support plane 321 is greater than the width of the support member 320. The support plane 321 abuts against the gear body 420, increasing the contact area between the support member 320 and the gear body 420, so that the support member 320 has a greater supporting force on the gear body 420, thereby making the gear body 420 rotate more smoothly, avoiding shaking when the gear body 420 rotates, thereby affecting the normal operation of the brushless motor 20. It can be understood that the support member 320 is not limited to setting the support plane 321 to achieve the effect of increasing the contact area between the support member 320 and the gear body 420, and the contact area between the support member 320 and the gear body 420 can also be increased by increasing the number of support members 320.

[0055] In some preferred embodiments, the support member 320 has a bending angle of 90°, so that the support member 320 fits more closely to the gear body 420, and no gap is generated between the support member 320 and the gear body 420, thereby enhancing the supporting effect and improving the connection stability between the support member 320 and the gear body 420.

[0056] In some more preferred embodiments, see Figure 4 , Figure 4The structural relationship between the support member 320 and the connecting member 310 in the embodiment of the utility model is illustrated. Specifically, a plurality of support members 320 and a plurality of connecting members 310 are formed at intervals on the periphery of the cover assembly 300. In the present embodiment, four support members 320 and four connecting members 310 are provided respectively and are arranged at intervals, so that the connection between the support member 320 and the gear body 420, and between the connecting member 310 and the gear housing 410 is more stable. In addition, the connecting member 310 abuts against the gear body 420, further improving the stability of the gear body 420, and avoiding shaking when the gear body 420 rotates, thereby affecting the normal operation of the brushless motor 20. It can be understood that the support member 320 and the connecting member 310 are not limited to being provided in plurality. In some other embodiments, the support member 320 and the connecting member 310 are provided in a sheet shape and formed on the periphery of the cover assembly 300.

[0057] Embodiment 2:

[0058] The difference between this embodiment and embodiment 1 is that this embodiment further optimizes the structure of the mounting structure 10 of the gear set of the utility model, see Figures 5 and 6 .

[0059] Among them, see Figure 5 , Figure 5 The structure relationship between the bearing 330 and the cover plate assembly 300 in the embodiment of the utility model is illustrated. Specifically, the cover plate assembly 300 further includes a bearing 330 , the bearing 330 is sleeved on the rotor assembly 200 , and the cover plate assembly 300 is connected to the bearing 330 .

[0060] Specifically, the bearing 330 can reduce the friction generated when the rotor assembly 200 rotates, so that the rotor assembly 200 rotates more smoothly, thereby reducing energy consumption. In this embodiment, the cover assembly 300 is sleeved on the bearing 330, reducing the friction between the rotor assembly 200 and the cover assembly 300, so that the rotor assembly 200 rotates more smoothly, thereby reducing energy consumption. In addition, since the cover assembly 300 is sleeved on the bearing 330, the overall structure is also made more compact, thereby reducing the overall occupied space of the brushless motor 20.

[0061] In some preferred embodiments, see Figure 6 , Figure 6The specific structure of the gear body 420 in the embodiment of the utility model is illustrated. Specifically, the gear body 420 includes a motor gear 421 and a planetary gear 422. The motor gear 421 is sleeved on the rotor assembly 200, and the planetary gear 422 surrounds and abuts against the motor gear 421. The rotation of the rotor assembly 200 drives the motor gear 421 to rotate, and then drives the planetary gear 422 to rotate, so that the rotor assembly 200 and the gear body 420 rotate synchronously, thereby ensuring the normal operation of the brushless motor 20. In addition, the structural compactness of the gear body 420 is also improved, thereby reducing the space occupied by the gear body 420, reducing the gear housing 410, and further compressing the space occupied by the mounting structure 10 of the gear set.

[0062] In some more preferred embodiments, see Figure 6 , Figure 6 The schematic diagram shows the structural relationship between the annular gasket 500 and the gear assembly 400 and the cover assembly 300 in the embodiment of the utility model. Specifically, the annular gasket 500 is also included, and the annular gasket 500 is connected to the connecting member 310, the supporting member 320 and the planetary gear 422 respectively. The motor gear 421 is penetrated by the annular gasket 500 and abuts against the planetary gear 422. The connection stability between the planetary gear 422 and the connecting member 310 and the supporting member 320 is improved, so that the planetary gear 422 rotates more smoothly, and the planetary gear 422 is prevented from shaking when rotating, thereby affecting the normal operation of the brushless motor 20. In addition, the friction between the planetary gear 422 and the connecting member 310 and the supporting member 320 is avoided when the planetary gear 422 rotates, causing the planetary gear 422, the connecting member 310 and the supporting member 320 to wear, thereby improving the service life of the planetary gear 422, the connecting member 310 and the supporting member 320.

[0063] In some other embodiments, the annular gasket 500 may not be provided, and the connecting member 310 and the supporting member 320 may directly abut against the planetary gear 422 respectively.

[0064] Embodiment 3:

[0065] This embodiment provides a brushless motor 20 based on the above embodiment. Figure 7-8 .

[0066] A brushless motor 20 includes a stator assembly 600, a second housing 700, and a mounting structure 10 of a gear set.

[0067] The brushless motor 20 uses semiconductor switching devices to achieve electronic commutation, that is, electronic switching devices are used to replace traditional contact commutators and brushes. It has the advantages of high reliability, no commutation sparks, low mechanical noise, etc., and is widely used in high-end recorders, video recorders, electronic instruments, automated office equipment and industrial equipment.

[0068] In this embodiment, the second housing 700 and the first housing 100 together form an installation cavity 101 for installing the stator assembly 600, and the stator assembly 600 is sleeved on the rotor assembly 200. The first housing 100 and the second housing 700 simultaneously protect the stator assembly 600, thereby preventing the stator assembly 600 from being scratched by external equipment, thereby causing wear or failure. At the same time, the overall structural compactness of the brushless motor 20 is improved, thereby reducing the space occupied by the brushless motor 20. Moreover, when the stator assembly 600 fails, the stator assembly 600 can be repaired or replaced by simply disassembling the first housing 100 or the second housing 700, thereby improving the maintenance efficiency of the stator assembly 600.

[0069] The brushless motor 20 of the utility model improves the motor front cover structure and reduces the fixing plate components, so that the gear housing 410 is directly covered on the cover assembly 300 and abuts against the bottom of the first housing 100, and is fixedly connected to the cover assembly 300 through the connecting member 310, so that the gear assembly 400 and the first housing 100 are fixed in one piece, thereby reducing the occupied space of the overall structure and further compressing the space of the overall structure. In addition, since the gear assembly 400 and the first housing 100 are fixed in one piece, the overall structure is compact and the installation time is reduced. As a result, the space of the gear box and the brushless motor 20 is further compressed, and the installation time of the overall structure is reduced.

[0070] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0072] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0073] In the present invention, unless otherwise clearly specified and limited, a feature being above or below a second feature may include being in direct contact with the second feature, or may include being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a feature being above, above, and above the second feature includes being directly above and obliquely above the second feature, or simply means that the feature is higher in level than the second feature. A feature being below, below, and below the second feature includes being directly below and obliquely below the second feature, or simply means that the feature is lower in level than the second feature.

[0074] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A gear set installation structure, characterized in that: include: A first housing (100) having an installation cavity (101) formed therein for installing a rotor assembly (200); A cover plate assembly (300) is fixedly connected to the bottom of the first shell (100), and a connecting piece (310) is provided on the outer periphery of the cover plate assembly (300); and A gear assembly (400) comprises a gear housing (410) and a gear body (420); the gear body (420) is arranged in a device cavity (411) formed inside the gear housing (410); the gear housing (410) is covered on the cover assembly (300), abuts against the bottom of the first housing (100), and is connected to the cover assembly (300) via the connecting piece (310).

2. The mounting structure of the gear set according to claim 1, characterized in that: The connecting member (310) is provided with a first connecting hole (311), and the peripheral wall of the gear housing (410) is provided with a second connecting hole (412); the first connecting hole (311) and the second connecting hole (412) are screwed together by a bolt (413) so that the gear housing (410) is connected to the connecting member (310).

3. The mounting structure of the gear set according to claim 1, characterized in that: The cover plate assembly (300) is connected to one side of the gear housing (410) and is also bent to form a support member (320) for axially limiting the gear body (420).

4. The mounting structure of the gear set according to claim 3, characterized in that: The support member (320) is provided with a support plane (321) for axially limiting the gear body (420), and the width of the support plane (321) is greater than the width of the support member (320).

5. The mounting structure of the gear set according to claim 3, characterized in that: The support member (320) has a bending angle of 90°.

6. The mounting structure of the gear set according to claim 3, characterized in that: A plurality of the support members (320) and a plurality of the connection members (310) are formed at intervals on the periphery of the cover plate assembly (300).

7. The mounting structure of the gear set according to claim 1, characterized in that: The cover plate assembly (300) further comprises a bearing (330), wherein the bearing (330) is sleeved on the rotor assembly (200), and the cover plate assembly (300) is connected to the bearing (330).

8. The mounting structure of the gear set according to claim 1, characterized in that: The gear body (420) comprises a motor gear (421) and a planetary gear (422); the motor gear (421) is sleeved on the rotor assembly (200); and the planetary gear (422) surrounds and abuts against the motor gear (421).

9. The mounting structure of the gear set according to claim 8, characterized in that: It also includes an annular gasket (500), the annular gasket (500) being respectively connected to the connecting member (310), the supporting member (320) and the planetary gear (422), and the motor gear (421) being passed through the annular gasket (500) and abutting against the planetary gear (422).

10. A brushless motor, characterized in that: The invention comprises a stator assembly (600), a second housing (700), and a mounting structure (10) of a gear set according to any one of claims 1 to 9, wherein the second housing (700) and the first housing (100) together form a mounting cavity (101) for mounting the stator assembly (600), and the stator assembly (600) is sleeved on the rotor assembly (200).

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