Miniature gearbox

Abstract

The utility model discloses a miniature gearbox. The miniature gearbox comprises a motor, a box body, a gear set and a driving shaft. A shell of the motor comprises an arc side plate and a straight side plate which are symmetrically arranged, the arc side plate is in an arc shape, the straight side plate is in a straight shape, the distance between the two straight side plates is flush with the height of the box body or lower than the height of the box body, and the end face of one side of the motor is fixed to a side face plate of a base of the box body. The box body comprises a top cover and a base, the whole top cover is of an L-shaped structure, a mounting hole, a switching hole, a bearing hole and a penetrating hole are designed in the top cover, the mounting hole corresponds to the mounting hole of the base and is fixed through a screw, the switching hole corresponds to one end of a rotating shaft on a gear of the gear set, a bearing is arranged in the bearing hole, and a rotating shaft of the motor is arranged in the penetrating hole; one side of the base is provided with a notch matched with the longitudinal part of the top cover, the base is hollow, and the bottom of the base is provided with an adapter hole and a bearing groove; the adapter hole corresponds to the other end of the rotating shaft on the gear of the gear set, and a bearing is arranged in the bearing groove. According to the technical scheme, the miniature gear boxes of different types are provided.

Description

Technical Field

[0001] The utility model relates to a transmission mechanism, in particular to a miniature micro gear box. Background Art

[0002] A micro gearbox is a transmission mechanism, which is generally designed with multiple meshing gears and a matching motor, wherein the motor is a cylindrical structure, which makes its overall size larger. At the same time, the shell of the micro gearbox is composed of a top cover and a base. The top cover is covered on the base, and the base has a slot-shaped structure with an empty groove to facilitate the placement of the gear set. The bottom cover is punched at the position that cooperates with the motor shaft to facilitate the penetration of the motor shaft. Utility Model Content

[0003] The utility model aims to provide a micro gear box, and solves the technical problem of providing different types of micro gear boxes.

[0004] A micro gearbox comprises a motor, a housing, a gear set and a driving shaft; the housing of the motor comprises arc side panels and straight side panels which are symmetrically arranged, the arc side panels are arc-shaped, the straight side panels are straight, the distance between the two straight side panels is aligned with or lower than the height of the housing, and one end face of the motor is fixed to the side panel of the base of the housing; the housing comprises a top cover and a base, the top cover is an L-shaped structure as a whole, and is provided with mounting holes, adapter holes, bearing holes and through holes, the mounting holes correspond to the mounting holes of the base and are fixed by screws, the adapter holes correspond to one end of the rotating shaft on the gear of the gear set, a bearing is arranged in the bearing hole, the rotating shaft of the motor is arranged in the through hole, one side of the base has a notch which cooperates with the longitudinal portion of the top cover, the interior of the base is hollow, and the bottom of the base has an adapter hole and a bearing groove; the adapter hole corresponds to the other end of the rotating shaft on the gear of the gear set, and a bearing is arranged in the bearing groove.

[0005] The longitudinal portion of the top cover has a flange protruding outward, and the base has a groove at a corresponding position, and the flange is plugged and matched with the groove.

[0006] The mounting holes are arranged at four corners of the top cover.

[0007] The beneficial effects of the utility model are as follows: the motor housing is designed with straight side panels, so that the cylindrical motor is optimized into a flat shape, which can reduce the overall volume of the motor to a certain extent; and by designing a longitudinal portion on the top cover, another structural box is provided, which fixes the motor and ensures the stability of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic diagram of a micro gearbox;

[0009] Figure 2This is a schematic diagram of the micro gearbox from another angle;

[0010] Figure 3 It is an exploded schematic diagram of the micro gearbox;

[0011] In the picture

[0012] 1. Motor, 11. Housing, 111. Arc side plate, 112. Straight side plate, 12. Rotating shaft, 13. End cover;

[0013] 2. box body, 21. top cover, 211. transverse part, 2111. flange, 212. longitudinal part, 22. base;

[0014] 3. Gear set;

[0015] 4. Drive shaft;

[0016] 51. Mounting hole, 52. Adapter hole, 53. Bearing hole, 54. Through hole, 55. Groove, 56. Bearing slot, 57. Fixing hole. DETAILED DESCRIPTION

[0017] Please refer to Figures 1 to 3 The micro gearbox in the figure is designed with a motor 1, a housing 2, a gear set 3, and a drive shaft 4; the gear set 3 and the drive shaft 4 can refer to the prior art. In this case, the motor 1 and the housing 2 are optimized, so that the micro gearbox has a smaller volume and a more stable and firm structure.

[0018] The motor 1 in the figure is also a micro motor 1, which is designed with a housing 11, a rotating shaft 12 and other components, wherein the housing 11 has an arc side plate 111 and a straight side plate 112, the arc side plate 111 is an arc shape as a whole and has two pieces and is symmetrically arranged, the straight side plate 112 is a straight shape as a whole and has two pieces and is symmetrically arranged, and the arc side plate 111 is arranged adjacent to the straight side plate 112. A fixing hole 57 can be designed on the outer end cover 13 of the motor 1, so that the entire motor 1 can be installed on the box 2 by bolts.

[0019] The box body 2 in the figure is designed with two structures, namely a top cover 21 and a base 22, wherein the top cover 21 is an L-shaped structure as a whole, namely, it includes a transverse portion 211 and a longitudinal portion 212; wherein mounting holes 51 are designed at the corner positions of the transverse portion 211, and adapter holes 52 and bearing holes 53 are designed on the inner bottom surface; the mounting hole 51 is a conventional structure that cooperates with a screw, the adapter hole 52 is a hole-shaped structure that cooperates with the rotating shaft 12, and the bearing hole 53 is a hole-shaped structure for placing a bearing; wherein the longitudinal portion 212 is designed with a through hole 54 and a fixing hole 57 structure, wherein the through hole 54 facilitates the penetration of the rotating shaft 12 of the motor 1 and the engagement with the gear set 3, and the fixing hole 57 is used to cooperate with the fixing hole 57 on the motor 1 to realize the mutual assembly and fixation of the motor 1 and the gear set 3. In order to facilitate the firm fixation of the top cover 21 and the base 22, a flange 2111 protruding outward can be designed on the longitudinal portion 212, and a groove 55 is designed at the corresponding position of the base 22, so that the flange 2111 is inserted into the groove 55 to achieve plug-in matching, thereby improving the firm assembly of the motor 1 and the base 22. The base 22 has an open structure at the position matching the transverse portion 211 and the longitudinal portion 212 of the top cover 21. The base 22 is hollow inside, and the mounting holes 51 are designed at the corner positions to align with the mounting holes 51 of the top cover 21. At the same time, the transfer hole 52 and the bearing groove 56 structure are designed at the bottom position, wherein the transfer hole 52 is directly below the transfer hole 52 of the top cover 21, so that the gear shaft 12 in the gear set 3 is fixed at two upper and lower positions, and the bearing groove 56 is directly below the bearing hole 53 of the top cover 21, so that the bearings are configured to fix the drive shaft 4 at two upper and lower positions. The height of the base 22 is slightly higher than or aligned with the height of the two straight side panels 112 of the motor 1, thus optimizing the occupied volume of this part.

[0020] The specific embodiments described above are only used to explain the present technical solution and are not used to limit the present technical solution. In the description of the present technical solution, it should be noted that the terms such as "upper" and "inner" indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present technical solution and simplifying the description, rather than indicating or implying 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 technical solution.

[0021] At the same time, in the description of this technical solution, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed" and "matched" 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 directly connected, or indirectly connected 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 this technical solution can be understood according to specific circumstances.

[0022] Although embodiments of the present technical solution have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present technical solution, and that the scope of the present technical solution is defined by the appended claims and their equivalents.

Claims

1. Micro gearbox, characterized by: The motor (1) comprises a motor (1), a housing (2), a gear set (3), and a drive shaft (4); the housing (11) of the motor (1) comprises a circular arc side plate (111) and a straight side plate (112) which are symmetrically arranged; the circular arc side plate (111) is in the shape of a circular arc, the straight side plate (112) is in the shape of a straight line, the distance between the two straight side plates (112) is aligned with the height of the housing (2) or is lower than the height of the housing (2); one end surface of the motor (1) is fixed to the side plate of the base (22) of the housing (2); the housing (2) comprises a top cover (21) and a base (22); the top cover (21) is an L-shaped structure as a whole, and is provided with a mounting hole (51) and a transfer hole (52) , a bearing hole (53), and a through hole (54); the mounting hole (51) corresponds to the mounting hole (51) of the base (22) and is fixed by screws; the adapter hole (52) corresponds to one end of the rotating shaft (12) on the gear of the gear set (3); a bearing is arranged in the bearing hole (53); the rotating shaft (12) of the motor (1) is arranged in the through hole (54); one side of the base (22) has a notch that matches the longitudinal portion (212) of the top cover (21); the base (22) is hollow inside; the bottom of the base (22) has an adapter hole (52) and a bearing groove (56); the adapter hole (52) corresponds to the other end of the rotating shaft (12) on the gear of the gear set (3); and a bearing is arranged in the bearing groove (56).

2. The micro gearbox according to claim 1, characterized in that: The longitudinal portion (212) of the top cover (21) has a flange (2111) protruding outwards, and the base (22) has a groove (55) at a corresponding position, and the flange (2111) and the groove (55) are plug-fitted and matched.

3. The micro gearbox according to claim 2, characterized in that: The mounting holes (51) are arranged at four corners of the top cover (21).

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