Gear box with motor

Abstract

The gearbox with the motor is distributed in a flat shape and further comprises a connecting base (5), an upper shell (6) and a lower shell (7), gears of a transmission gear set are installed on the upper shell (6) and the lower shell (7), the upper shell (6) is integrally provided with a sleeving part (8), the sleeving part (8) is provided with a first axial through hole (9) communicated with an inner cavity, the motor is installed on the connecting base (5) and supported by the connecting base (5), and the motor is installed on the connecting base (5). The connecting seat (5) is provided with a second axial through hole (10), a rotating shaft (1) of the motor is supported and positioned by a bearing in the second axial through hole (10), the bearing positioned at the lower end of the connecting seat (5) is axially sleeved with the first axial through hole (9) of the sleeving part (8), and the rotating shaft (1) of the motor is mounted and positioned on the sleeving part (8) through axial sleeving; the gearbox provided with the motor is beneficial to guaranteeing that the driving gear driven by the rotating shaft of the motor is well meshed with the next-stage gear, and meanwhile production and manufacturing are convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear box technical field, concretely relates to a gear box with motor. BACKGROUND

[0002] In electromechanical product, gear box driven by motor is the main structure, and in household electrical appliances, especially small household electrical appliances, the structure volume of power source has higher requirement, one of which is gear box with motor, including motor, transmission gear group and output end, transmission gear group is arranged between motor and output end, the rotating shaft of motor is coaxially installed with driving gear, output end is coaxially installed with output gear, transmission gear group includes driving gear, output gear and intermediate gear between driving gear and output gear, intermediate gear can be one or more, the rotating shaft of motor, the shaft of each gear of transmission gear group and output end are all distributed along horizontal direction and arranged in parallel, each gear of transmission gear group is sequentially engaged to form flat distribution, in this way, the volume advantage is obtained through the foregoing arrangement.

[0003] Although the gear box with motor has volume advantage, it also brings some difficulties, for example, how to guarantee that driving gear driven by rotating shaft of motor and next stage gear keep good engagement, and facilitate production and manufacture. CONTENT OF UTILITY MODEL

[0004] The utility model solves the technical problem that a gear box with motor is provided, which is beneficial to guarantee that driving gear driven by rotating shaft of motor and next stage gear keep good engagement, and facilitate production and manufacture.

[0005] The utility model discloses a technical solution is: a gear box with motor, including motor, transmission gear group and output, is provided transmission gear group between motor and output, and the driving gear is coaxially arranged to the shaft of motor, and the output gear is equipped with the output gear, and transmission gear group includes the driving gear and the output gear and the intermediate gear between the driving gear and the output gear, and the shaft of motor, the shaft of each intermediate gear of transmission gear group, the shaft of output gear all along transverse distribution and parallel arrangement, and each gear of transmission gear group is sequentially engaged and forms the flat distribution, still include connecting seat, upper casing and lower casing, and the upper casing and lower casing are all from the lateral of motor to the lateral of output transverse extension setting, and the inner chamber of the upper casing and lower casing upper and lower assembly constitutes installs each gear, and the upper casing is integrally equipped with the sleeve joint part, and the sleeve joint part is equipped with the first axial through -hole that communicates the inner chamber, and the motor is installed on the connecting seat and is supported by the connecting seat, and the connecting seat is equipped with the second axial through -hole, and the bearing is installed to the second axial through -hole, and the shaft of motor is connected with the bearing, and the shaft of motor is supported and positioned by the bearing, and the bearing is located at the lower end of connecting seat and protrudes the lower end surface of connecting seat downward, and the part of the bearing protruding the lower end surface of connecting seat downward with the first axial through -hole of sleeve joint part is axially sleeved, and the shaft of motor is installed and positioned on the sleeve joint part by the axial sleeve.

[0006] After adopting above -mentioned structure, the utility model has following advantages:

[0007] Because being equipped with connecting seat, and then cooperating with the sleeve joint part of the upper casing integral setting, so the motor is indirectly installed on the upper casing through the connecting seat, and the structure of the upper casing can be simplified, and the finish machining of the first axial through -hole of sleeve joint part and the finish machining of the second axial through -hole of connecting seat are also more convenient.

[0008] Meanwhile, the motor is installed on and supported by the connecting seat, the connecting seat is provided with a second axial through hole, a bearing is installed in the second axial through hole, the rotating shaft of the motor is connected with the bearing, the rotating shaft of the motor is supported and positioned by the bearing, the bearing at the lower end of the connecting seat protrudes downward beyond the lower end surface of the connecting seat, the part of the bearing protruding downward beyond the lower end surface of the connecting seat is axially sleeved with the first axial through hole of the sleeving part, the axial sleeving of the part of the bearing protruding downward beyond the lower end surface of the connecting seat with the first axial through hole of the sleeving part enables the rotating shaft of the motor to be installed and positioned on the sleeving part, so that the parallelism of the rotating shaft of the motor and the driving gear coaxially arranged with the rotating shaft of the motor relative to the next-stage gear can be better guaranteed, that is, after the technical solution of the present application is adopted, in mass production, the rotating shaft of the motor and the driving gear coaxially arranged with the rotating shaft of the motor can be prevented from being skewed, so that the driving gear driven by the rotating shaft of the motor can be prevented from being out of engagement with the next-stage gear, and meanwhile, the difficulty of assembly is also reduced, that is, the process of repeatedly correcting and locking to prevent the skewing in the prior art is omitted, so that the assembly is facilitated.

[0009] In summary, the present application can guarantee that the driving gear driven by the rotating shaft of the motor is in good engagement with the next-stage gear, and the production and manufacturing are facilitated.

[0010] In some embodiments, the connecting seat is provided with a first connecting part in the circumferential direction, the upper shell is provided with a second connecting part at a position corresponding to the first connecting part, the first connecting part and the second connecting part are aligned to form a connecting hole, and the connecting hole is connected with a fastener to fix the connecting seat on the upper shell.

[0011] In some embodiments, the motor is an outer rotor motor, the outer rotor motor includes an outer rotor and a stator, the stator is sleeved and fixed on the connecting seat, the outer rotor is rotatably sleeved on the stator, the upper end of the outer rotor is connected with the rotating shaft, and the outer rotor drives the rotating shaft to rotate.

[0012] In some embodiments, the bearing includes a first bearing and a second bearing, the connecting seat includes a first mounting hole part at the upper end thereof and a second mounting hole part at the lower end thereof, the first bearing is installed in the first mounting hole part, the second bearing is installed in the second mounting hole part, the rotating shaft and the connecting seat are connected through the first bearing and the second bearing to form a first assembly, the second bearing protrudes downward beyond the lower end of the connecting seat to form a downward protruding part, and the first assembly is axially sleeved with the first axial through hole of the sleeving part through the downward protruding part to be positioned and installed.

[0013] In some embodiments, the connecting seat is provided with a vertical protruding rib in the circumferential direction, and the stator is provided with a vertical slot in the inner periphery thereof, which is inserted and matched with the vertical protruding rib.

[0014] In some embodiments, the connecting seat is provided with a support surface for mounting the circuit board at the lower end of the vertical protruding ribs, and a positioning structure is arranged between the connecting seat and the stator, the positioning structure positioning the height of the stator fitted on the connecting seat so that the lower end surface of the stator and the support surface form a mounting interval, and the circuit board is mounted in the mounting interval.

[0015] In some embodiments, a plurality of vertical protruding ribs are arranged along the circumference of the sleeve part, and at least one of the vertical protruding ribs is arranged in a trapezoidal shape with a narrow upper end and a wide lower end, and the vertical protruding rib in the trapezoidal shape positions the height of the stator so that the lower end surface of the stator and the support surface form a mounting interval.

[0016] In some embodiments, a plurality of vertical protruding ribs are arranged along the circumference of the connecting seat, and at least one of the vertical protruding ribs is provided with a guide part extending upward to the upper end of the connecting seat.

[0017] In some embodiments, the upper end of the guide part is provided with a relief inclined surface. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic view of the assembly of a first component and an upper housing.

[0019] Figure 2 It is a schematic view of a gear box provided with a motor from the top.

[0020] Figure 3 It is a sectional view along A-A direction.

[0021] Figure 4 It is a schematic view of the assembly of a first component and an outer rotor, a stator, and a circuit board.

[0022] Figure 5 It is a schematic view of an upper housing provided with a connecting seat from the top.

[0023] Figure 6 It is a sectional view along B-B direction.

[0024] As shown in the drawings of the utility model, 1 is a rotating shaft, 2 is a driving gear, 3 is an output gear, 4 is an intermediate gear, 5 is a connecting seat, 6 is an upper housing, 7 is a lower housing, 8 is a sleeve part, 9 is a first axial through hole, 10 is a second axial through hole, 11 is a first connecting part, 12 is a second connecting part, 13 is a connecting hole, 14 is an outer rotor, 15 is a stator, 16 is a first bearing, 17 is a second bearing, 18 is a first mounting hole part, 19 is a second mounting hole part, 20 is a protruding part, 21 is a vertical protruding rib, 22 is a vertical groove, 23 is a circuit board, 24 is a support surface, 25 is a trapezoidal shape, 26 is a guide part, and 27 is a relief inclined surface. DETAILED DESCRIPTION

[0025] In order to better understand the present application, various aspects of the present application will be described in greater detail below with reference to the drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the present application and in no way limit the scope of the present application.

[0026] As shown in Figures 1 to 6 , a gear box provided with a motor is disclosed, comprising a motor, a transmission gear set and an output end, the transmission gear set is arranged between the motor and the output end, the rotating shaft 1 of the motor is coaxially provided with a driving gear 2, the output end is provided with an output gear 3, the transmission gear set comprises the driving gear 2, the output gear 3 and the intermediate gears 4 between the driving gear 2 and the output gear 3, the rotating shaft 1 of the motor, the shafts of the intermediate gears 4 of the transmission gear set and the shaft of the output gear 3 are all distributed along the transverse direction and arranged in parallel, the gears of the transmission gear set are sequentially engaged to form a flat distribution, further comprising a connecting seat 5, an upper shell 6 and a lower shell 7, the upper shell 6 and the lower shell 7 are both arranged to extend transversely from the side of the motor to the side of the output end, the inner cavity formed by the upper shell 6 and the lower shell 7 is assembled from top to bottom to install the gears, the upper shell 6 is integrally provided with a sleeve part 8, the sleeve part 8 is provided with a first axial through hole 9 which communicates with the inner cavity, the motor is installed on the connecting seat 5 and supported by the connecting seat 5, and the connecting seat 5 is provided with a second axial through hole 10, the second axial through hole 10 is installed with a bearing, the rotating shaft 1 of the motor is connected with the bearing, the rotating shaft 1 of the motor is supported and positioned by the bearing, the bearing at the lower end of the connecting seat 5 protrudes downward beyond the lower end surface of the connecting seat 5, the part of the bearing which protrudes downward beyond the lower end surface of the connecting seat 5 is axially sleeved with the first axial through hole 9 of the sleeve part 8, and the axial sleeving makes the rotating shaft 1 of the motor installed and positioned on the sleeve part 8.

[0027] In some embodiments, the upper shell 6 can be integrally formed with the sleeve part 8 by existing molding processes such as die casting or casting.

[0028] In some embodiments, as shown in Figure 3 , 4 , the motor adopts an outer rotor motor, the outer rotor motor comprises an outer rotor 14 and a stator 15, the stator 15 is sleeved and fixed on the connecting seat 5, the outer rotor 14 is rotatably sleeved on the stator 15, and the upper end of the outer rotor 14 is connected with the rotating shaft 1, the outer rotor 14 rotates to drive the rotating shaft 1 to rotate.

[0029] Further, as shown in Figure 3 , 4As shown in FIG. 6, the bearing includes a first bearing 16 and a second bearing 17, the connecting seat 5 includes a first mounting hole portion 18 at its upper end and a second mounting hole portion 19 at its lower end, the first bearing 16 is mounted in the first mounting hole portion 18, the second bearing 17 is mounted in the second mounting hole portion 19, the first bearing 16 and the second bearing 17 connect the rotating shaft 1 and the connecting seat 5 to form a first assembly, and the second bearing 17 protrudes downward beyond the lower end of the connecting seat 5 to form a downward protruding portion 20, the first assembly is axially sleeved with the first axial through hole 9 of the sleeve portion 8 through the downward protruding portion 20 to be positioned and mounted. In this way, the first assembly is arranged, which can be more conveniently mounted and is beneficial to the mounting quality.

[0030] As shown in FIG. 6, Figure 3 , 6 The first axial through hole 9 is divided into an upper portion and a lower portion, the upper portion is used for sleeving and mounting the positioning protruding portion 20, and the lower portion is used for the rotating shaft 1 to pass through and enter the inner cavity, so that the driving gear 2 and the intermediate gear 4 are well engaged, the intermediate gear 4 is one or more, and the number of the intermediate gear 4 is set according to the need of the transmission distance.

[0031] The connecting seat 5 is provided with a first connecting portion 11 in the circumferential direction, the upper shell 6 is provided with a second connecting portion 12 at a position corresponding to the first connecting portion 11, the first connecting portion 11 and the second connecting portion 12 are aligned to form a connecting hole 13, and the connecting hole 13 is connected with a fastener to fix the connecting seat 5 on the upper shell 6. Preferably, after the first assembly is axially sleeved with the first axial through hole 9 of the sleeve portion 8 through the downward protruding portion 20, the first connecting portion 11 and the second connecting portion 12 are connected and fixed by the fastener, so that the connecting seat 5 is fixed on the upper shell 6.

[0032] As shown in FIG. 6, Figure 1 The first connecting portion 11 is provided with a plurality of connecting ears, and the second connecting portion 12 is provided with the same number of connecting portions in the circumferential direction of the sleeve portion 8.

[0033] In order to more conveniently and efficiently mount the stator 15, as shown in FIG. 6, Figure 1 , 4 The connecting seat 5 is provided with a vertical protruding rib 21 in the circumferential direction, and the inner periphery of the stator 15 is provided with a vertical groove 22 matched with the vertical protruding rib 21.

[0034] Further, in order to more conveniently and efficiently mount the circuit board 23, the connecting seat 5 is provided with a support surface 24 for mounting the circuit board 23 at the lower end of the vertical protruding rib 21, and a positioning structure is arranged between the connecting seat 5 and the stator 15 to position the height of the stator 15 sleeved on the connecting seat 5 so that an installation interval is formed between the lower end surface of the stator 15 and the support surface 24, and the circuit board 23 is mounted in the installation interval.

[0035] Further, as shown in FIG. 6, Figure 4As shown, the vertical protruding ribs 21 are arranged along the circumference of the sleeve part 8, and at least one of the vertical protruding ribs 21 is arranged as a trapezoid 25 with a narrow upper end and a wide lower end, and the vertical protruding rib 21 of the trapezoid 25 is positioned at a height of the stator 15 so as to form an installation interval between the lower end surface of the stator 15 and the support surface 24. In this way, the structure is simple and the installation is convenient.

[0036] In some embodiments, as Figure 4 As shown, the vertical protruding ribs 21 are arranged along the circumference of the connecting seat 5, and at least one of the vertical protruding ribs 21 is arranged with a guide part 26 extending upward to the upper end of the connecting seat 5. In this way, the stator 15 is more conveniently installed.

[0037] Further, as Figure 4 As shown, the upper end of the guide part 26 is arranged with a relief inclined surface 27. In this way, the lower end of the vertical groove 22 can be more easily inserted into the guide part 26, thereby facilitating efficient assembly.

[0038] On the power output structure, the output gear 3 can be directly used as an output end, or it can be other structures, for example, an output shaft is further installed on the output gear 3, and the output shaft is used as an output end.

[0039] The above-mentioned is only the embodiment of the utility model for illustrating, therefore, the equivalent changes or modifications made according to the structure, features and principles of the utility model patent protection scope are included in the utility model patent protection scope.

Claims

1. A gearbox equipped with a motor, comprising a motor, a transmission gear set, and an output end, wherein the transmission gear set is disposed between the motor and the output end, a drive gear (2) is coaxially disposed on the motor shaft (1), and an output gear (3) is disposed on the output end, the transmission gear set comprising the drive gear (2), the output gear (3), and an intermediate gear (4) between the drive gear (2) and the output gear (3), wherein the shafts of the motor shaft (1), the intermediate gears (4) of the transmission gear set, and the output gear (3) are all distributed laterally and arranged in parallel, and the gears of the transmission gear set mesh sequentially to form a flat distribution, characterized in that: Also include connecting seat (5), upper shell (6) and lower shell (7), upper shell (6) and lower shell (7) are both from the side of the motor to the side of the output transversely extending, upper shell (6) and lower shell (7) are assembled to form the inner cavity of each gear, upper shell (6) is integrally provided with sleeve part (8), sleeve part (8) is provided with first axial through hole (9) communicated with the inner cavity, motor is installed on connecting seat (5) and is supported by connecting seat (5), and connecting seat (5) is provided with second axial through hole (10), second axial through hole (10) is provided with bearing, the rotating shaft (1) of motor is connected with bearing, the rotating shaft (1) of motor is supported and positioned by bearing, the bearing at the lower end of connecting seat (5) is higher than the lower end surface of connecting seat (5), the part of the bearing that is higher than the lower end of connecting seat (5) is axially sleeved with the first axial through hole (9) of sleeve part (8), and the rotating shaft (1) of motor is installed and positioned on sleeve part (8) by the axial sleeve.

2. A gearbox with an electric machine according to claim 1, characterized in that: The circumferential direction of connecting seat (5) is provided with first connecting part (11), and the position corresponding to first connecting part (11) of upper shell (6) is provided with second connecting part (12), first connecting part (11) and second connecting part (12) are aligned to form connecting hole (13), and connecting hole (13) is connected with fastening member to fix connecting seat (5) on upper shell (6).

3. A gearbox with an electric machine according to claim 1 or 2, characterized in that: The motor adopts an outer rotor motor, which comprises an outer rotor (14) and a stator (15). The stator (15) is sleeved and fixed on the connecting seat (5), and the outer rotor (14) is rotatably sleeved on the stator (15). The upper end of the outer rotor (14) is connected with the rotating shaft (1), and the outer rotor (14) rotates to drive the rotating shaft (1) to rotate.

4. A gearbox with an electric machine according to claim 3, characterized in that: The bearing comprises a first bearing (16) and a second bearing (17), and the connecting seat (5) comprises a first mounting hole portion (18) at the upper end thereof and a second mounting hole portion (19) at the lower end thereof. The first bearing (16) is mounted in the first mounting hole portion (18), and the second bearing (17) is mounted in the second mounting hole portion (19). The rotating shaft (1) and the connecting seat (5) are connected through the first bearing (16) and the second bearing (17) to form a first assembly. The second bearing (17) protrudes downward from the lower end of the connecting seat (5) to form a downward protruding portion (20). The first assembly is axially sleeved with the first axial through hole (9) of the sleeve part (8) through the downward protruding portion (20) to be positioned and mounted.

5. A gearbox with an electric motor according to claim 4, characterized in that: The circumferential direction of connecting seat (5) is provided with vertical protruding rib (21), and the inner circumference of stator (15) is provided with vertical slot (22) matched with vertical protruding rib (21).

6. A gearbox with an electric motor according to claim 5, characterized in that: The connecting seat (5) is provided with supporting surface (24) for mounting circuit board (23) at the lower end of vertical protruding rib (21). The connecting seat (5) and the stator (15) are provided with positioning structure. The positioning structure positions the height of the stator (15) sleeved on the connecting seat (5) to form a mounting interval between the lower end surface of the stator (15) and the supporting surface (24). The circuit board (23) is mounted in the mounting interval.

7. A gearbox with an electric motor according to claim 6, characterized in that: The vertical protruding ribs (21) are arranged along the circumference of the sleeve joint (8), and at least one of the vertical protruding ribs (21) is arranged as a trapezoid (25) with a narrow upper end and a wide lower end, the vertical protruding rib (21) of the trapezoid (25) is positioned at the height of the stator (15) to form a mounting interval between the lower end surface of the stator (15) and the support surface (24).

8. A gearbox with an electric motor according to claim 5, characterized in that: The vertical protruding ribs (21) are arranged along the circumference of the connecting seat (5), and at least one of the vertical protruding ribs (21) is provided with a guide portion (26) extending upward to the upper end of the connecting seat (5).

9. A gearbox with an electric motor according to claim 8, characterized in that: The upper end of the guide portion (26) is provided with a relief inclined surface (27).

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