Small motor reducer easy to disassemble and assemble

Abstract

The utility model provides a small motor reducer easy to disassemble and assemble, and belongs to the technical field of gear motor reducers. The small motor reducer easy to disassemble and assemble comprises a driven end cover and a speed reduction end cover. The speed reduction end cover is provided with an eccentric bearing seat sleeve, an outer gear ring and a sealing ring groove, and the driven end cover and a bolt hole are rapidly installed in an aligned mode through a positioning convex groove. The outer gear ring is meshed with the driving gear to achieve speed reduction transmission, and the gear shaft can be output in an extending mode or output in an eccentric rotating mode through a pagoda column. The speed reducer is compact in structure, the size of the speed reducer is further reduced compared with that of a speed reducer in the prior art, and the speed reducer is easy to disassemble and assemble and suitable for small equipment occasions with limited space.

Description

Technical Field

[0001] This utility model belongs to the technical field of geared motor reducers, and specifically relates to a small, easy-to-disassemble motor reducer. Background Technology

[0002] A speed reducer is a mechanical transmission device whose core function is to convert the high-speed, low-torque output of a power source into a low-speed, high-torque output through structures such as gears and worm gears to meet the working requirements of actual equipment. In some special applications, small geared motors are often required. However, since the speed reducers of small geared motors mostly consist of multiple transmission gears forming a reduction gear set to achieve the speed reduction effect, the speed reducer accounts for a large proportion of the overall size of the geared motor, making it unsuitable for the working environment of small geared motors.

[0003] Patent CN214367537U discloses a small motor reducer that converts the input torque of a small motor into a larger output torque through a two-stage transmission of a worm gear and two meshing gears. While ensuring the reducer's normal torque transmission function, it features a simple structure and effectively reduces the reducer's size. However, this patent has the drawback of being difficult to disassemble after installation, and there is still room for further reduction in the reducer's size. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a small, easily detachable motor reducer.

[0005] The purpose of this utility model can be achieved through the following technical solution: a small, easily disassembled motor reducer, including a driven end cover on the front side and a reduction end cover on the rear side;

[0006] The deceleration end cover has a bearing seat sleeve eccentrically formed on the rear side, and a sealing ring groove coaxially formed on the front side with the end cover body. A number of bolt holes are formed circumferentially at equal distances between the outer side of the sealing ring groove and the outer diameter of the deceleration end cover. A uniform annular external gear ring is snapped into the inner side of the sealing ring groove, and the external gear ring meshes with the drive gear.

[0007] A connecting bearing is fitted inside the bearing housing sleeve, and a gear shaft passes through the center of the connecting bearing. The driving gear is sleeved on the shaft end of the gear shaft and rotates synchronously with it. The driven end cover has several positioning grooves formed at equal intervals in the circumferential direction on the rear side facing the deceleration end cover. The positioning grooves are arranged and installed alternately with the bolt holes. The connecting bolts pass through the bolt holes from front to back to fix the driven end cover and the deceleration end cover together. An eccentric shaft hole is opened on the driven end cover corresponding to the gear shaft.

[0008] In the aforementioned small, easily disassembled motor reducer, an O-ring is fitted into the sealing ring groove of the reducer end cover.

[0009] In the aforementioned small, easily disassembled motor reducer, a crescent-shaped eccentric positioning block is formed inside the outer gear ring of the reduction end cover on the side farther from the gear shaft. The thickness of the eccentric positioning block is less than the thickness of the outer gear ring to avoid interfering with the meshing transmission between the outer gear ring and the drive gear.

[0010] In the aforementioned small, easily disassembled motor reducer, a pair of pagoda columns are symmetrically formed on the front end face of the driven end cover; the gear shaft can extend through the eccentric shaft hole of the driven end cover and be connected to other equipment for transmission, or the torque can be transmitted to the pagoda columns by fitting a shaft hole sealing cover at the shaft end, so that the pair of pagoda columns rotate eccentrically around the gear shaft.

[0011] Compared with the prior art, the small, easy-to-disassemble motor reducer provided by this utility model uses the meshing connection between the external gear ring and the drive gear to further reduce the size of the reducer while ensuring the normal function of the reducer's speed reduction transmission. Through the setting of structures such as positioning convex grooves and eccentric positioning blocks, the reducer is installed in a aligned position, making it easier to disassemble and assemble, and faster and more convenient to install. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this small, easily disassembled motor reducer;

[0013] Figure 2 This is an exploded view of the front and side structures of this small, easily disassembled motor reducer;

[0014] Figure 3 This is a schematic diagram of the rear structure of the driven end cover and the reduction end cover in this small, easily disassembled motor reducer.

[0015] In the above figure, 100 is the driven end cover; 110 is the positioning groove; 120 is the eccentric shaft hole; 121 is the shaft hole sealing cover; 130 is the connecting bolt; 140 is the pagoda column; 200 is the reduction end cover; 210 is the bearing housing sleeve; 211 is the connecting bearing; 220 is the sealing ring groove; 221 is the O-ring; 230 is the bolt hole; 240 is the external gear ring; 241 is the eccentric positioning block; 250 is the driving gear; and 251 is the gear shaft. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figures 1 to 3 As shown, this utility model provides a small, easy-to-disassemble motor reducer, which mainly includes a driven end cover 100 and a reduction end cover 200.

[0018] The reduction end cover 200 has an eccentrically formed bearing housing sleeve 210 on its rear side. A bearing 211 is installed inside the bearing housing sleeve 210 to support the gear shaft 251 passing through it. The reduction end cover 200 has a sealing ring groove 220 coaxially formed with the end cover body on its front side. An O-ring is installed in the groove, forming a double seal between the O-ring 221 and the sealing ring groove 220 to prevent lubricant leakage. Several bolt holes 230 are formed circumferentially at equal intervals on the reduction end cover 200 between the outer side of the sealing ring groove 220 and the outer diameter of the reduction end cover 200. A uniformly spaced annular external gear ring 240 is snapped onto the inner side of the sealing ring groove 220. The external gear ring 240 meshes with the drive gear 250. A crescent-shaped eccentric positioning block 241, with a thickness smaller than the external gear ring 240, is provided on the inner side to avoid interference with the meshing transmission.

[0019] The driven end cover 100 has several equidistant positioning grooves 110 formed on its rear circumferential side facing the reduction end cover 200. The positioning grooves 110 and the bolt holes 230 of the reduction end cover 200 are staggered to ensure proper alignment during installation. The connecting bolts 130 pass through the bolt holes 230 from front to back to secure the driven end cover 100 and the reduction end cover 200 together. Under the combined action of the positioning protrusions 110 and the eccentric positioning block 241, the driven end cover 100 and the reduction end cover 200 can be automatically aligned during installation, and no secondary calibration is required after the connecting bolts 130 are tightened.

[0020] An eccentric shaft hole 120 is eccentrically formed on the driven end cover 100, corresponding to the gear shaft 251. The eccentric shaft hole 120 can be sealed by installing a shaft hole sealing cover 121, or the shaft end of the gear shaft 251 can be extended to connect to external equipment. A pair of pagoda columns 140 are symmetrically formed on the front end face of the driven end cover 100. When the torque of the gear shaft 251 is transmitted through the shaft hole sealing cover 121, it drives the pagoda columns 140 to rotate eccentrically, thereby realizing power output.

[0021] To further explain, if the external gear ring 240 and the drive gear 250 adopt helical gear meshing, noise can be effectively reduced and transmission efficiency can be improved.

[0022] The working principle of this utility model is as follows: the motor drives the gear shaft 251 to rotate, which in turn drives the drive gear 250 to rotate. The drive gear 250 meshes with the external gear ring 240, converting the high-speed input into a low-speed, high-torque output. There are two ways to output power: one is to directly output power through the gear shaft 251 passing through the eccentric shaft hole 120, and the other is to install the shaft hole sealing cover 121, and output torque through the eccentric rotation of the pagoda column 140, which can be used for winding work, etc.

[0023] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0024] Although this document uses a variety of terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A small and easy-to-disassemble motor reducer comprising a front-side driven end cover (100) and a rear-side reduction end cover (200); characterized in that, The deceleration end cover (200) is eccentrically formed with a bearing seat sleeve (210) at the rear side, coaxially formed with a sealing ring groove (220) at the front side, and a plurality of bolt holes (230) are formed at the outer side of the sealing ring groove (220) and the outer diameter of the deceleration end cover (200) at the rear side of the deceleration end cover (200) at equal distances in the circumferential direction, and the inner side of the sealing ring groove (220) is connected and mounted with an annular uniform outer gear ring (240), and the outer gear ring (240) is engaged and matched with the driving gear (250); The bearing seat sleeve (210) is fitted and mounted with a connecting bearing (211), the connecting bearing (211) is provided with a gear shaft (251) at the center, the driving gear (250) is sleeved on the shaft end of the gear shaft (251) and rotates synchronously with the gear shaft (251); The driven end cover (100) is formed with a plurality of positioning grooves at equal distances in the circumferential direction at the rear side facing the deceleration end cover (200), the positioning grooves are arranged and installed at intervals with the bolt holes (230), the connecting bolts (130) pass through the bolt holes (230) from front to back to fixedly connect the driven end cover (100) and the deceleration end cover (200), and the driven end cover (100) is eccentrically provided with an eccentric shaft hole (120) corresponding to the gear shaft (251).

2. The compact, easy-to-disassemble motor reducer according to claim 1, characterized by The sealing ring groove (220) of the deceleration end cover (200) is fitted and mounted with an O-ring (221).

3. The compact, easy-to-assemble / disassemble motor reducer according to claim 1, characterized by, The outer gear ring (240) of the deceleration end cover (200) is formed with a crescent-shaped eccentric positioning block (241) at the side far from the gear shaft (251) inside, and the thickness of the eccentric positioning block (241) is less than the thickness of the outer gear ring (240) to avoid interfering with the engagement transmission of the outer gear ring (240) and the driving gear (250).

4. The compact, easy-to-assemble / disassemble motor reducer according to claim 1, characterized by, A pair of pagoda columns (140) are symmetrically formed on the front end face of the driven end cover (100); The gear shaft (251) can extend through the eccentric shaft hole (120) of the driven end cover (100) and be connected with other equipment transmission, or a shaft hole sealing cover (121) can be sleeved on the shaft end to transmit torque to the pagoda column (140), so that the pair of pagoda columns (140) rotate eccentrically around the gear shaft (251).

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