Direct-current gear box motor

Abstract

A direct current gear box motor comprises a motor body and a gear box in transmission connection with the motor body, and the diameter of the motor body is the same as that of the gear box. The motor body comprises a shell, an end cover inserted in an opening of the shell, a rotor assembly arranged in the shell and a stator arranged on the periphery of a rotor of the rotor assembly in a surrounding mode, and the gear box comprises a gear box shell and a gear assembly arranged in the gear box shell. The gear of the gear assembly is sleeved on the rotating shaft of the rotor assembly. Due to the adoption of the structural design, that is, the motor body and the gear box with the same diameter are in transmission connection, the occupied space of the gear box motor is reduced, the application range is expanded, and meanwhile, the problems of stability and reliability are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor technical field especially a direct current gear box motor. BACKGROUND

[0002] Gearbox motor is an integrated transmission device, which combines the functions of motor and gearbox, and is usually used in applications requiring high torque and low speed. Gearbox motor converts the high-speed low-torque output of the motor into low-speed high-torque output through the gear set in the gearbox, thereby meeting the needs of mechanical equipment.

[0003] The utility model discloses a kind of gearbox motors, including motor main body and gear box, gear box includes cover plate, box and the cavity formed between cover plate and box, gear assembly is arranged in cavity, gear assembly includes the first gear installed on motor shaft, the second gear meshing with first gear, the output gear arranged on output shaft, the third gear meshing with output gear, wherein, gear assembly further includes the clutching device between the second gear and the third gear, clutching device includes rotating shaft, main gear and auxiliary gear installed on rotating shaft, main gear is meshed with second gear, auxiliary gear is meshed with third gear, pin shaft is further provided on main gear, rotating shaft lower end is provided with reset spring, rotating shaft extends into bushing outside box. Its gear box is offset and arranged at one side of motor main body, not only occupies larger space, but also has stability and reliability problems.

[0004] Therefore, the prior art needs to be improved and improved. UTILITY MODEL CONTENTS

[0005] To overcome the above problems existing in the prior art, the purpose of the utility model is to provide a direct current gearbox motor with small space occupation and without stability and reliability problems.

[0006] The utility model achieves the above-mentioned purposes through the following technical means:

[0007] A direct current gearbox motor, comprising a motor body and a gear box in transmission connection with the motor body, the diameter of the motor body is the same as that of the gear box, the motor body comprises a shell, an end cover inserted into the opening of the shell, a rotor assembly arranged in the shell, and a stator arranged around the periphery of the rotor assembly, the gear box comprises a gear box shell and a gear assembly arranged in the gear box shell, wherein the gear assembly is sleeved on the rotating shaft of the rotor assembly.

[0008] As a further scheme of the utility model, the rotor assembly comprises the rotating shaft, the rotor sleeved on the rotating shaft, a commutator, and a rotor winding wound on the rotor and electrically connected with the commutator, one end of the rotating shaft is rotatably installed on the gear box through a first bearing, the other end of the rotating shaft is rotatably installed on the end cover through a second bearing, and the commutator is located on the side of the rotor close to the opening of the shell.

[0009] As a further scheme of the utility model, the end cover comprises an end plate and a carbon brush holder installed on the end plate, a first carbon brush arm and a second carbon brush arm are installed on the carbon brush holder, the first carbon brush arm and the second carbon brush arm are oppositely arranged, a first carbon brush is installed on the free end of the first carbon brush arm, the first carbon brush arm can provide elastic force for the first carbon brush to make the first carbon brush slide to the commutator and keep elastic contact with the commutator, a second carbon brush is installed on the free end of the second carbon brush arm, and the second carbon brush arm can provide elastic force for the second carbon brush to make the second carbon brush slide to the commutator and keep elastic contact with the commutator.

[0010] As a further scheme of the utility model, the first carbon brush arm comprises a first fixed part, a first elastic part and a second fixed part, the first elastic part is obliquely arranged, the first fixed part is bent at one end of the first elastic part, the second fixed part is bent at the other end of the first elastic part, the first fixed part is installed on the carbon brush holder, and the first carbon brush is installed on the second fixed part; the second carbon brush arm comprises a third fixed part, a second elastic part and a fourth fixed part, the second elastic part is obliquely arranged, the third fixed part is bent at one end of the second elastic part, the fourth fixed part is bent at the other end of the second elastic part, the third fixed part is installed on the carbon brush holder, and the second carbon brush is installed on the fourth fixed part.

[0011] As a further scheme of the utility model, the carbon brush holder further comprises a first connecting terminal and a second connecting terminal, the first connecting terminal is connected with the first fixed part and extends out of the end cover, and the second connecting terminal is connected with the third fixed part and extends out of the end cover.

[0012] As a further scheme of the utility model, the first elastic part is provided with a first shock absorbing rubber sheet on the side away from the second elastic part, and the second elastic part is provided with a second shock absorbing rubber sheet on the side away from the first elastic part.

[0013] As a further scheme of the utility model, the gear box shell comprises a gear frame and a gear box cover installed on the gear frame, a containing cavity is formed between the gear frame and the gear box cover, the gear assembly is arranged in the containing cavity, the gear assembly comprises the gear arranged on the rotating shaft, a composite gear meshing with the gear, an output gear meshing with the composite gear and an output shaft arranged on the output gear, one end of the output shaft is rotatably installed on the gear frame through a third bearing, and the other end is rotatably installed on the gear box cover through a fourth bearing and extends out of the gear box cover.

[0014] As a further scheme of the utility model, the composite gear is a stepped gear, the composite gear comprises two first gear segments and second gear segments with different diameters, the first gear segments mesh with the gear, and the second gear segments mesh with the output gear, wherein the diameter of the first gear segments is greater than that of the second gear segments.

[0015] As a further scheme of the utility model, the carbon brush holder extends a protrusion towards the shell, and at least one notch matched with the protrusion is arranged at the opening of the shell.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] Due to the adoption of the above structural design, the motor body with the same diameter is connected with the gear box in transmission, the occupied space of the gear box motor is reduced, the use range is expanded, and the stability and reliability problems are solved. BRIEF DESCRIPTION OF DRAWINGS

[0018] ATTACHED Figure 1 It is a structural schematic view of the utility model embodiment;

[0019] ATTACHED Figure 2 It is a sectional structure schematic view of the utility model embodiment;

[0020] ATTACHED Figure 3 It is another structural schematic view of the utility model embodiment;

[0021] ATTACHED Figure 4 It is an exploded structural schematic view of the end cover of the utility model embodiment;

[0022] ATTACHED Figure 5 It is an exploded structural schematic view of the gear box of the utility model embodiment.

[0023] The respective reference numerals in the drawings are:

[0024] 100-motor body, 200-gear box;

[0025] 101-shell, 102-end cover, 103-rotor assembly, 104-stator;

[0026] 201 - gear box housing, 202 - gear assembly;

[0027] 1031 - rotating shaft, 1032 - rotor, 1033 - commutator, 1034 - first bearing, 1035 - second bearing;

[0028] 2021 - gear, 2022 - compound gear, 2023 - output gear, 2024 - output shaft, 2025 - third bearing, 2026 - fourth bearing;

[0029] 2022a - first gear segment, 2022b - second gear segment;

[0030] 1021 - end plate, 1022 - carbon brush holder, 1023 - first carbon brush arm, 1024 - second carbon brush arm, 1025 - first carbon brush, 1026 - second carbon brush, 1027 - first connecting terminal, 1028 - second connecting terminal;

[0031] 1023a - first fixed part, 1023b - first elastic part, 1023c - second fixed part, 1023d - first shock absorbing rubber sheet;

[0032] 1024a - third fixed part, 1024b - second elastic part, 1024c - fourth fixed part, 1024d - second shock absorbing rubber sheet;

[0033] 2011 - gear carrier, 2012 - gear box cover;

[0034] 1022a - protrusion;

[0035] 1011 - notch. DETAILED DESCRIPTION

[0036] This part will describe the specific embodiments of the present application in detail, the preferred embodiments of the present application are shown in the drawings, the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the present application, but it cannot be understood as a limitation on the protection scope of the present application.

[0037] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like based on the orientation or position relationship shown in the drawings, is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore it cannot be understood as a limitation on the present application.

[0038] In the description of the utility model, if several mean one or more, multiple means two or more, greater than, less than, exceed and the like are understood as not including the number, above, below, within and the like are understood as including the number. If it is described to the first, second, it is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0039] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be broadly understood, and the person skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.

[0040] Embodiment:

[0041] Please refer to Figures 1-5 The utility model discloses a direct current gear box motor, including a motor body 100 and a gear box 200 with the transmission connection of motor body 100, the diameter of motor body 100 is same with the diameter of gear box 200, motor body 100 includes a shell 101, the end cover 102 of being inserted in the opening of shell 101, the rotor assembly 103 of being set in the shell 101 and the stator 104 of surrounding the periphery of rotor 1032 of rotor assembly 103, gear box 200 includes a gear box shell 201 and the gear assembly 202 of being set in the gear box shell 201, wherein, the gear 2021 of gear assembly 202 is sleeved on the rotating shaft 1031 of rotor assembly 103. Through the structural design above, motor body 100 and gear box 200 diameter are same and motor body 100 is transmission connected with gear box 200, gear box 200 is set in one end of motor body 100, and is not offset and set in one side of motor body 100, not only reduces the occupied space of gear box motor, expands the use range, and also solves the stability and reliability problem simultaneously. In the embodiment, the stator 104 includes two arc-shaped stator blocks, and the two arc-shaped stator blocks are oppositely arranged.

[0042] Specifically, the rotor assembly 103 includes the rotating shaft 1031, the rotor 1032 and a commutator 1033 sleeved on the rotating shaft 1031, and a rotor winding (not shown in the figure) wound on the rotor 1032 and electrically connected with the commutator 1033, one end of the rotating shaft 1031 is rotatably installed on the gear box 200 through a first bearing 1034, the other end of the rotating shaft 1031 is rotatably installed on the end cover 102 through a second bearing 1035, wherein the commutator 1033 is located on the side of the rotor 1032 close to the opening of the shell 101.

[0043] Specifically, the end cover 102 comprises an end plate 1021 and a carbon brush holder 1022 mounted on the end plate 1021, the carbon brush holder 1022 is mounted with a first carbon brush arm 1023 and a second carbon brush arm 1024, the first carbon brush arm 1023 is opposite to the second carbon brush arm 1024, the free end of the first carbon brush arm 1023 is mounted with a first carbon brush 1025, the first carbon brush arm 1023 can provide elastic force for the first carbon brush 1025 to slide to the commutator 1033 and keep elastic contact with the commutator 1033, the free end of the second carbon brush arm 1024 is mounted with a second carbon brush 1026, the second carbon brush arm 1024 can provide elastic force for the second carbon brush 1026 to slide to the commutator 1033 and keep elastic contact with the commutator 1033.

[0044] Specifically, the first carbon brush arm 1023 comprises a first fixed part 1023a, a first elastic part 1023b and a second fixed part 1023c, the first elastic part 1023b is inclined, the first fixed part 1023a is bent at one end of the first elastic part 1023b, and the second fixed part 1023c is bent at the other end of the first elastic part 1023b, the first fixed part 1023a is mounted on the carbon brush holder 1022, and the first carbon brush 1025 is mounted on the second fixed part 1023c; the second carbon brush arm 1024 comprises a third fixed part 1024a, a second elastic part 1024b and a fourth fixed part 1024c, the second elastic part 1024b is inclined, the third fixed part 1024a is bent at one end of the second elastic part 1024b, and the fourth fixed part 1024c is bent at the other end of the second elastic part 1024b, the third fixed part 1024a is mounted on the carbon brush holder 1022, and the second carbon brush 1022 is mounted on the fourth fixed part 1024c.

[0045] Specifically, the carbon brush holder 1022 is also mounted with a first connecting terminal 1027 and a second connecting terminal 1028, the first connecting terminal and the second connecting terminal are both mounted on the carbon brush holder by rivets, the first connecting terminal 1027 is connected with the first fixed part 1023a and extends out of the end cover 102, and the second connecting terminal 1028 is connected with the third fixed part 1024a and extends out of the end cover 102.

[0046] Specifically, the first elastic part 1023b is provided with a first shock absorbing rubber sheet 1023d on the side away from the second elastic part 1024b, for reducing vibration and noise during operation of the first elastic part 1023b, and the second elastic part 1024b is provided with a second shock absorbing rubber sheet 1024d on the side away from the first elastic part 1023b, for reducing vibration and noise during operation of the second elastic part 1024b.

[0047] Specifically, the gear box shell 201 comprises a gear frame 2011 and a gear box cover 2012 mounted on the gear frame 2011, and a containing cavity is formed between the gear frame 2011 and the gear box cover 2012, and the gear assembly 202 is arranged in the containing cavity, the gear assembly 202 comprises the gear 2021 arranged on the rotating shaft 1031, a compound gear 2022 engaged with the gear 2021, an output gear 2023 engaged with the compound gear 2022 and an output shaft 2024 arranged on the output gear 2023, one end of the output shaft 204 is rotatably mounted on the gear frame 2011 through a third bearing 2025, and the other end is rotatably mounted on the gear box cover 2012 through a fourth bearing 2026 and extends out of the gear box cover 2012.

[0048] Specifically, the compound gear 2022 is a stepped gear, the compound gear 2022 comprises a first gear segment 2022a and a second gear segment 2022b with different diameters, the first gear segment 2022a is engaged with the gear 2021, and the second gear segment 2022b is engaged with the output gear 2023, wherein the diameter of the first gear segment 2022a is greater than that of the second gear segment 2022b, so that greater torque is provided.

[0049] Specifically, the carbon brush holder 1022 extends a protrusion 1022a towards the shell 101, and the shell opening is provided with three notches 1011, any one of which is matched with the protrusion 1022a, for preventing assembly error or insertion error, and ensuring that the parts can be mounted or connected in the correct way.

[0050] In summary, the structure design solves the problems in the prior art, and has the characteristics of reasonable structure, small space occupation, stability and reliability.

[0051] The above is only a specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A DC-geared motor, characterized by: The motor includes a motor body (100) and a gear box (200) in transmission connection with the motor body (100), the diameter of the motor body (100) is the same as the diameter of the gear box (200), the motor body (100) includes a shell (101), an end cover (102) inserted at the opening of the shell, a rotor assembly (103) arranged in the shell (101), and a stator (104) arranged around the periphery of the rotor (1032) of the rotor assembly (103), the gear box (200) includes a gear box shell (201) and a gear assembly (202) arranged in the gear box shell (201), wherein the gear (2021) of the gear assembly (202) is sleeved on the rotating shaft (1031) of the rotor assembly (103).

2. A DC-geared motor as claimed in claim 1, characterized in that: The rotor assembly (103) includes the rotating shaft (1031), the rotor (1032) and a commutator (1033) sleeved on the rotating shaft (1031), and a rotor winding arranged around the rotor (1032) and electrically connected with the commutator (1033), one end of the rotating shaft (1031) is rotatably installed on the gear box (200) through a first bearing (1034), the other end of the rotating shaft (1031) is rotatably installed on the end cover (102) through a second bearing (1035), wherein the commutator (1033) is located on the side of the rotor (1032) close to the opening of the shell.

3. A DC-geared motor as claimed in claim 2, characterized in that: The end cover (102) includes an end plate (1021) and a carbon brush holder (1022) mounted on the end plate (1021), a first carbon brush arm (1023) and a second carbon brush arm (1024) are mounted on the carbon brush holder (1022), the first carbon brush arm (1023) and the second carbon brush arm (1024) are arranged opposite to each other, a first carbon brush (1025) is mounted on the free end of the first carbon brush arm (1023), the first carbon brush arm (1023) can provide elastic force for the first carbon brush (1025) to slide to the commutator (1033) and keep elastic contact with the commutator (1033), a second carbon brush (1026) is mounted on the free end of the second carbon brush arm (1024), the second carbon brush arm (1024) can provide elastic force for the second carbon brush (1026) to slide to the commutator (1033) and keep elastic contact with the commutator (1033).

4. A DC-geared motor as claimed in claim 3, characterized in that: The first carbon brush arm (1023) comprises a first fixed part (1023a), a first elastic part (1023b) and a second fixed part (1023c), the first elastic part (1023b) is arranged obliquely, the first fixed part (1023a) is bent at one end of the first elastic part (1023b), the second fixed part (1023c) is bent at the other end of the first elastic part (1023b), the first fixed part (1023a) is installed on the carbon brush holder (1022), and the first carbon brush (1025) is installed on the second fixed part (1023c); the second carbon brush arm (1024) comprises a third fixed part (1024a), a second elastic part (1024b) and a fourth fixed part (1024c), the second elastic part (1024b) is arranged obliquely, the third fixed part (1024a) is bent at one end of the second elastic part (1024b), the fourth fixed part (1024c) is bent at the other end of the second elastic part (1024b), the third fixed part (1024a) is installed on the carbon brush holder (1022), and the second carbon brush (1026) is installed on the fourth fixed part (1024c).

5. A DC-geared motor as claimed in claim 4, characterized in that: The carbon brush holder (1022) is further provided with a first connecting terminal (1027) and a second connecting terminal (1028), the first connecting terminal (1027) is connected with the first fixed part (1023a) and extends out of the end cover (102), and the second connecting terminal (1028) is connected with the third fixed part (1024a) and extends out of the end cover (102).

6. A DC-geared motor as claimed in claim 5, characterized in that: The first elastic part (1023b) is provided with a first shock-absorbing rubber sheet (1023d) on the side away from the second elastic part (1024b), and the second elastic part (1024b) is provided with a second shock-absorbing rubber sheet (1024d) on the side away from the first elastic part (1023b).

7. A DC-geared motor as claimed in claim 6, characterized in that: The gear box shell (201) comprises a gear frame (2011) and a gear box cover (2012) installed on the gear frame (2011), a containing cavity is formed between the gear frame (2011) and the gear box cover (2012), and the gear assembly (202) is arranged in the containing cavity; the gear assembly (202) comprises the gear (2021) arranged on the rotating shaft (1031), a composite gear (2022) engaged with the gear (2021), an output gear (2023) engaged with the composite gear (2022) and an output shaft (2024) arranged on the output gear (2023), one end of the output shaft (2024) is rotatably installed on the gear frame (2011) through a third bearing (2025), and the other end is rotatably installed on the gear box cover (2012) through a fourth bearing (2026) and extends out of the gear box cover (2012).

8. A DC-geared motor as claimed in claim 7, characterized in that: The composite gear (2022) is a stepped gear, the composite gear (2022) comprises a first gear segment (2022a) and a second gear segment (2022b) with different diameters, the first gear segment (2022a) is engaged with the gear (2021), and the second gear segment (2022b) is engaged with the output gear (2023), wherein the diameter of the first gear segment (2022a) is greater than that of the second gear segment (2022b).

9. A DC-geared motor as claimed in claim 8, characterized in that: The carbon brush holder (1022) extends in the direction of the shell and has a protrusion (1022a), and the shell opening is provided with at least one notch (1011) matched with the protrusion (1022a).

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