Compact reactive stepping motor

Abstract

The utility model discloses a compact reaction type stepping motor, and specifically relates to the stepping motor technology field, the compact reaction type stepping motor comprises a housing, a rotating shaft and a bearing, the rotating shaft is rotatably connected with the housing through the bearing, one end of the housing is provided with a power line, and the surface of the housing is provided with a rolling structure at one side of the power line. A lubricating structure is arranged at the top of the bearing and comprises an oil storage barrel, the oil storage barrel is mounted at the top of the bearing, an oil inlet pipe is arranged at the bottom of the oil storage barrel and communicated with the bearing, a sealing plug is mounted at the top of the oil storage barrel in a threaded manner, a pull ring is arranged at the top of the sealing plug, and a filter screen is mounted in the oil storage barrel. The internal structure of the stepping motor is integrated through injection molding, the stepping motor is compact in structure and small in occupied space, the bearing is convenient to maintain, the service life is prolonged, redundant power lines can be wound, and disorder and other safety accidents are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stepping motors, and more specifically, to a compact reactive stepping motor. Background Art

[0002] A reactive stepper motor is a traditional stepper motor that rotates by the interaction of a magnetic rotor core with a pulsed electromagnetic field generated by a stator.

[0003] In existing stepper motors, after the front cover and the rotor are installed, the rear cover is installed on the bottom of the rotor, and the front and rear cover are fixed with fixing screws. In this assembly method, the installation points of the stator and the front and rear cover are provided with stop heights, which require workers to coordinate and adjust during installation, and high precision is required. In addition, in occasions with compact structures, it is currently difficult to reduce the size of this stepper motor for installation, and the installation range is limited due to its own structure.

[0004] For example, a Chinese patent with authorization announcement number CN220797930U discloses a compact stepper motor. This structure uses injection molding to fix the front and rear end covers directly into one piece with the stator, reducing the assembly margin and insulation gap required for the original metal end covers. This makes the motor structure more compact and occupies less space, making it suitable for use in scenarios where customers have very tight space requirements.

[0005] However, in actual use, this structure makes it difficult to lubricate and maintain the bearings at the rotating shaft, which can easily lead to wear under long-term rotation, affecting the service life of the stepper motor. In view of this, the present invention proposes a compact reactive stepper motor. Utility Model Content

[0006] In order to overcome the above-mentioned defects of the prior art, the present invention provides a compact reactive stepping motor to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a compact reactive stepping motor, comprising a housing, a rotating shaft and a bearing, wherein the rotating shaft is rotatably connected to the housing via the bearing, and a power cord is provided at one end of the housing.

[0008] In order to facilitate lubrication of the bearing and increase its service life, preferably, a lubrication structure is provided on the top of the bearing, and the lubrication structure includes an oil storage cylinder, which is installed on the top of the bearing, and an oil inlet pipe is provided at the bottom of the oil storage cylinder, and the oil inlet pipe is connected to the bearing, and a sealing plug is threadedly installed on the top of the oil storage cylinder, and a pull ring is provided on the top of the sealing plug, and a filter is installed inside the oil storage cylinder.

[0009] In order to be able to reel in the excess power cord to avoid confusion and other safety accidents, preferably, a reeling structure is provided on the surface of the shell located on one side of the power cord, and the reeling structure includes a support plate, which is fixedly mounted on the surface of the shell and located on one side of the power cord, and a reeling screw is fixedly mounted on the surface of the support plate, and a positioning plate is mounted on the external thread of the reeling screw.

[0010] In order to facilitate cleaning of the filter inside the oil storage cylinder, preferably, the outer wall of the oil storage cylinder is provided with a mounting groove, the interior of the mounting groove is installed with a sealing plate by screws, the surface of the sealing plate is provided with a groove, and the filter is connected to the sealing plate.

[0011] In order to absorb and discharge excess lubricating oil to avoid waste of lubricating oil, preferably, a mounting ring is provided at the bottom of the filter screen, an oil-absorbing sponge is installed inside the mounting ring, an extrusion ring is embedded in the inner wall of the mounting ring on one side of the oil-absorbing sponge, an adjusting screw is provided at one end of the extrusion ring, the outer wall of the mounting ring is fixedly mounted on the inner wall of the oil storage barrel, the oil-absorbing sponge is fixedly mounted inside the mounting ring, and the adjusting screw is threadedly connected to the oil storage barrel.

[0012] The technical effects and advantages of this utility model are:

[0013] 1. By setting up a lubrication structure, the pull ring drives the sealing plug to rotate to open the oil reservoir, and the lubricating oil is poured into the oil reservoir. The filter inside the oil reservoir filters the impurities in the lubricating oil to avoid the impact of impurities in the lubricating oil. The lubricating oil enters the interior of the bearing through the oil inlet pipe, thereby achieving the lubrication effect on the bearing and ensuring the smooth rotation of the shaft;

[0014] 2. Remove the screws on the sealing plate and pull the sealing plate outward through the groove to separate it from the inside of the installation groove. The sealing plate then pulls the filter out of the oil reservoir, making it easy to disassemble and clean the filter.

[0015] 3. The oil-absorbing sponge inside the oil reservoir absorbs excess lubricating oil to avoid excessive lubricating oil being wasted. Moreover, the operator rotates the adjusting screw to drive the extrusion ring to squeeze the oil-absorbing sponge, which can squeeze out the lubricating oil absorbed by the sponge and lubricate the bearing, making it easier for the operator to use.

[0016] 4. By setting up a winding structure, the excess power cord can be manually wrapped around the outside of the winding screw to avoid mixing of the power cords due to excessive length, while reducing the occurrence of safety accidents. In addition, by rotating the positioning disk, the positioning disk can be threadedly rotated on the outside of the winding screw to tighten the wound power cord to prevent the wound power cord from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a three-dimensional schematic diagram of the winding structure of the present utility model.

[0019] Figure 3 This is a schematic diagram of the lubrication structure and bearing connection structure of the utility model.

[0020] Figure 4 This is a schematic diagram of the connection structure between the sealing plug and the oil storage cylinder of the utility model.

[0021] Figure 5 This is a schematic diagram of the connection structure between the oil-absorbing sponge and the oil storage cylinder of the utility model.

[0022] The accompanying drawings are marked as follows: 1. Housing; 2. Rotating shaft; 3. Bearing; 4. Power cord; 5. Oil storage cylinder; 6. Oil inlet pipe; 7. Sealing plug; 8. Pull ring; 9. Filter; 10. Support plate; 11. Winding screw; 12. Position plate; 13. Mounting groove; 14. Sealing plate; 15. Pull groove; 16. Mounting ring; 17. Oil-absorbing sponge; 18. Extrusion ring; 19. Adjusting screw. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] As attached Figure 1-5 The compact reactive stepper motor shown includes a housing 1, a rotating shaft 2 and a bearing 3. The rotating shaft 2 is rotatably connected to the housing 1 through the bearing 3. A power cord 4 is provided at one end of the housing 1.

[0025] Specifically, in this structure, the rotating shaft 2 can rotate at the housing 1 through the bearing 3. The stepper motor adopts an injection molding fixing method to inject the housing 1 and the stator inside it into one piece, reducing the assembly margin and insulation gap required by the original metal end cover, making the motor structure more compact and occupying less space. This is specifically disclosed in the prior art and belongs to the prior art, so it will not be described in detail here.

[0026] In a specific embodiment, as shown in the attached Figure 3 、 4As shown, a lubrication structure is provided on the top of the bearing 3, and the lubrication structure includes an oil storage cylinder 5, which is installed on the top of the bearing 3, and an oil inlet pipe 6 is provided at the bottom of the oil storage cylinder 5, and the oil inlet pipe 6 is connected to the bearing 3, and a sealing plug 7 is threadedly installed on the top of the oil storage cylinder 5, and a pull ring 8 is provided on the top of the sealing plug 7, and a filter screen 9 is installed inside the oil storage cylinder 5.

[0027] Specifically, this structure is used to lubricate and maintain the bearing 3, reducing the wear of the rotating shaft 2 and the bearing 3 caused by long-term rotation. Specifically, the sealing plug 7 is driven to rotate by the pull ring 8, the oil storage cylinder 5 is opened, and the lubricating oil is poured into the interior of the oil storage cylinder 5. The filter screen 9 inside the oil storage cylinder 5 filters the impurities inside the lubricating oil to avoid the influence of the impurities in the lubricating oil. The lubricating oil enters the interior of the bearing 3 through the oil inlet pipe 6, thereby achieving the lubrication effect on the bearing 3 and ensuring the smoothness of the rotation of the rotating shaft 2.

[0028] In a specific embodiment, as shown in the attached Figure 1 、 2 As shown, a winding structure is provided on the surface of the shell 1 on one side of the power cord 4, and the winding structure includes a support plate 10, which is fixedly mounted on the surface of the shell 1 and located on one side of the power cord 4. A winding screw 11 is fixedly mounted on the surface of the support plate 10, and a positioning plate 12 is mounted on the external thread of the winding screw 11.

[0029] Specifically, in this structure, if the power cord 4 of the stepper motor is too long, the excess power cord 4 can be manually wrapped around the outside of the winding screw 11. At the same time, by rotating the positioning disk 12, the positioning disk 12 is threadedly rotated on the outside of the winding screw 11, and the wound power cord 4 can be tightened to prevent the wound power cord 4 from loosening.

[0030] In a specific embodiment, as shown in the attached Figure 4 As shown, the outer wall of the oil storage cylinder 5 is provided with a mounting groove 13 , the interior of the mounting groove 13 is fixed with a sealing plate 14 by screws, the surface of the sealing plate 14 is provided with a groove 15 , and the filter screen 9 is connected to the sealing plate 14 .

[0031] Specifically, in this structure, when the filter 9 needs to be cleaned, the screws on the sealing plate 14 are released, and the sealing plate 14 is pulled outward through the pull groove 15, so that the sealing plate 14 is separated from the inside of the installation groove 13, and the sealing plate 14 drives the filter 9 to be pulled out from the inside of the oil storage cylinder 5, so that the filter 9 can be easily disassembled and cleaned;

[0032] The cleaned filter screen 9 can be installed inside the oil storage cylinder 5 through the installation groove 13, and the sealing plate 14 is placed inside the installation groove 13 and fastened with screws.

[0033] In a specific embodiment, as shown in the attached Figure 4、 5 As shown, a mounting ring 16 is provided at the bottom of the filter 9, an oil-absorbing sponge 17 is installed inside the mounting ring 16, an extrusion ring 18 is embedded in the inner wall of the mounting ring 16 on one side of the oil-absorbing sponge 17, an adjusting screw 19 is provided at one end of the extrusion ring 18, the outer wall of the mounting ring 16 is fixedly mounted on the inner wall of the oil storage cylinder 5, the oil-absorbing sponge 17 is fixedly mounted inside the mounting ring 16, and the adjusting screw 19 is threadedly connected to the oil storage cylinder 5.

[0034] Specifically, in this structure, after the lubricating oil is poured into the oil storage cylinder 5, the oil-absorbing sponge 17 will absorb the excess lubricating oil to avoid waste caused by pouring too much lubricating oil. In addition, the operator can rotate the adjusting screw 19 to drive the extrusion ring 18 to squeeze the oil-absorbing sponge 17, so as to squeeze out the lubricating oil absorbed by the oil-absorbing sponge 17 and lubricate the bearing 3, which is convenient for the operator to use.

[0035] Working principle of this utility model:

[0036] When the above structure is used, the rotating shaft 2 of the stepper motor can rotate through the bearing 3 and the housing 1. When the bearing 3 needs to be lubricated and maintained, the sealing plug 7 is rotated by rotating the pull ring 8 to open the oil reservoir 5, and the lubricating oil is poured into the oil reservoir 5. The filter 9 inside the oil reservoir 5 filters the impurities in the lubricating oil to avoid the influence of the impurities in the lubricating oil. The lubricating oil enters the interior of the bearing 3 through the oil inlet pipe 6, thereby achieving the lubrication effect of the bearing 3 and ensuring the smooth rotation of the rotating shaft 2.

[0037] After the lubricating oil is poured into the oil reservoir 5, the oil-absorbing sponge 17 absorbs the excess lubricating oil, thereby avoiding waste caused by pouring too much lubricating oil. In addition, the operator rotates the adjusting screw 19 to drive the squeezing ring 18 to squeeze the oil-absorbing sponge 17, thereby squeezing the lubricating oil absorbed by the oil-absorbing sponge 17 and lubricating the bearing 3, which is convenient for the operator to use.

[0038] When the filter 9 needs to be cleaned, the screws on the sealing plate 14 are released, and the sealing plate 14 is pulled outward through the groove 15, so that the sealing plate 14 is separated from the inside of the installation groove 13. The sealing plate 14 drives the filter 9 to be pulled out from the inside of the oil storage cylinder 5, which makes it easy to disassemble and clean the filter 9.

[0039] When the stepper motor is powered on and used, one end of the power cord 4 is connected to the power supply. When the power cord 4 of the stepper motor is too long, the excess power cord 4 can be manually wrapped around the outside of the winding screw 11. At the same time, by rotating the positioning disk 12, the positioning disk 12 is threadedly rotated on the outside of the winding screw 11, which can tighten the wound power cord 4 to prevent the wound power cord 4 from loosening.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compact reactive stepping motor, comprising a housing (1), a rotating shaft (2) and a bearing (3), wherein the rotating shaft (2) is rotatably connected to the housing (1) via the bearing (3), and characterized in that: A power cord (4) is provided at one end of the housing (1), a winding structure is provided on the surface of the housing (1) on one side of the power cord (4), and a lubrication structure is provided on the top of the bearing (3); The lubrication structure comprises an oil storage cylinder (5), the oil storage cylinder (5) being mounted on the top of the bearing (3), and an oil inlet pipe (6) being arranged at the bottom of the oil storage cylinder (5), the oil inlet pipe (6) being connected to the bearing (3), a sealing plug (7) being threadedly mounted on the top of the oil storage cylinder (5), a pull ring (8) being arranged on the top of the sealing plug (7), and a filter screen (9) being installed inside the oil storage cylinder (5).

2. The compact reactive stepping motor according to claim 1, characterized in that: The winding structure comprises a support plate (10), the support plate (10) being fixedly mounted on the surface of the housing (1) and located on one side of the power cord (4), a winding screw (11) being fixedly mounted on the surface of the support plate (10), and a positioning plate (12) being mounted on the external thread of the winding screw (11).

3. The compact reactive stepping motor according to claim 1, characterized in that: The outer wall of the oil storage cylinder (5) is provided with a mounting groove (13), a sealing plate (14) is mounted inside the mounting groove (13) by means of screws, a groove (15) is provided on the surface of the sealing plate (14), and the filter screen (9) is connected to the sealing plate (14).

4. The compact reactive stepping motor according to claim 1, characterized in that: A mounting ring (16) is provided at the bottom of the filter screen (9), an oil-absorbing sponge (17) is installed inside the mounting ring (16), an extrusion ring (18) is embedded in the inner wall of the mounting ring (16) on one side of the oil-absorbing sponge (17), and an adjusting screw (19) is provided at one end of the extrusion ring (18).

5. The compact reactive stepping motor according to claim 4, characterized in that: The outer wall of the mounting ring (16) is fixedly mounted on the inner wall of the oil storage cylinder (5), the oil absorption sponge (17) is fixedly mounted inside the mounting ring (16), and the adjusting screw (19) is threadedly connected to the oil storage cylinder (5).

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