Stepping motor with dustproof structure

Abstract

The application discloses a stepping motor with a dustproof structure and relates to the technical field of stepping motors.The stepping motor comprises a motor body, a rear end cover fixedly installed at one end of the motor body, a heat dissipation fan detachably installed on the rear end cover, a front end cover fixedly installed at the other end of the motor body, mounting holes formed at the positions of the four corners of the front end cover, an output shaft rotatably connected to the front end cover, a dustproof assembly, a ventilation assembly and a quick release assembly.The stepping motor has a reasonable structure, dust on the surface of the output shaft can be treated through the dustproof assembly, dust is prevented from entering the interior of the motor body through the output shaft, and the ventilation assembly and the quick release assembly can realize heat dissipation of the whole motor body.

Description

Technical Field

[0001] This invention relates to the field of stepper motor technology, and in particular to a stepper motor with a dustproof structure. Background Technology

[0002] In electric vehicles, stepper motors are primarily used in actuators requiring precise angle / position control, low-speed smoothness, low noise, and cost control. Typical applications include: headlight and optical engine adjustment: adaptive headlight angle, HUD head-up display position adjustment; cabin and thermal management: HVAC dampers / vent blades, active air intake grille dampers, various valve / pump actuators; body and convenience: charging port cover / door lock actuators, fine adjustment of some seats / rearview mirrors, etc. At the overall vehicle drive level, the main drive typically uses a permanent magnet synchronous motor (PMSM) or a three-phase BLDC motor; stepper motors focus more on specific execution links such as cabin / thermal management / optical engine, playing a supplementary role in "fine-grained control".

[0003] Announcement No. CN214014013U discloses a stepper motor with a dustproof structure, including a motor housing. One end of the motor housing has a threaded hole, and a front end cover is threadedly connected to the inside of the threaded hole. A bolt is threadedly connected to the inside of the front end cover, and the front end cover is fixedly connected to the motor housing via the bolt. A dustproof ring is fixedly connected to the middle of the front end cover, and a first rotating shaft is rotatably connected inside the dustproof ring. A screw is threadedly connected to the other end of the motor housing. A clamping member is fixedly connected to one side of the rear cover, and a charging device is fixedly connected inside the clamping member. This utility model, through the cooperative arrangement of the motor housing, front end cover, dustproof ring, bolt, rear cover, screw, and clamping member, facilitates the disassembly and installation of the stepper motor, achieving a simple and quick assembly, and solving the problems of difficult disassembly and installation and complex assembly of existing stepper motors.

[0004] The above invention still has some problems in practical use;

[0005] The aforementioned patent describes a mechanism that facilitates the disassembly and installation of stepper motors through the coordinated arrangement of the motor housing, front cover, dust seal, bolts, rear cover, screws, and clamping components. However, since the surface of the output shaft is coated with lubricating oil, it easily attracts dust from the air. If this dust is not cleaned for a long time, it will enter the interior of the stepper motor through the output shaft, which can easily damage the internal components. Furthermore, existing stepper motors are equipped with cooling fans at the rear end. When the stepper motor is running at high speed, the fan is needed to dissipate heat. However, existing cooling fans are fixed by threads, which is inconvenient for quick disassembly. Summary of the Invention

[0006] The purpose of this application is to provide a stepper motor with a dustproof structure, which enables the dust on the surface of the output shaft to be treated through the dustproof component, preventing dust from entering the interior of the motor body through the output shaft, and the ventilation component and quick-release component can achieve heat dissipation of the entire motor body.

[0007] To achieve the above objectives, this application provides the following technical solution: a stepper motor with a dustproof structure, comprising a motor body, a rear end cover fixedly mounted on one end of the motor body, a cooling fan detachably mounted on the rear end cover, a front end cover fixedly mounted on the other end of the motor body, mounting holes provided at the four corners of the front end cover, and an output shaft rotatably connected to the front end cover;

[0008] It also includes a dustproof component, a ventilation component, and a quick-release component. The dustproof component is mounted on the output shaft to remove adhering substances from its surface. The ventilation component is mounted on the rear end cover to dissipate heat from the inside of the motor body. The quick-release component is mounted on the cooling fan for installation and use.

[0009] Preferably, the dustproof assembly includes a connector detachably mounted on the output shaft, a sleeve is fixedly connected to the connector, a collection box is fixedly mounted on the sleeve, a ring is fixedly mounted at one end of the sleeve, and several sets of scrapers are fixedly mounted on the surface of the ring.

[0010] Preferably, a mating plate is fixedly connected to the surface of the connector, a plug rod is movably inserted into the mating plate, a collar is fixedly connected to the top of the plug rod, a first spring is sleeved on the plug rod, the two ends of the first spring are fixedly connected to the bottom surface of the collar and the top surface of the mating plate, respectively, and a screw head is fixedly connected to the bottom end of the plug rod.

[0011] Preferably, a limiting plate is fixedly installed on the surface of the front end cover by bolts. The limiting plate has a slot and a slot on its bottom surface. The slot and the slot are interconnected, and the screw head is engaged inside the slot.

[0012] Preferably, the ventilation assembly includes a docking ring fixedly installed at one end of the rear end cover, side plates are symmetrically fixedly connected to the surface of the docking ring, a locking block is fixedly installed on the outer surface of the side plate, locking posts are symmetrically fixedly connected inside the docking ring, and a retaining ring is fixedly connected to one end of the locking post.

[0013] Preferably, a filter disc is detachably installed inside the docking ring, and a docking groove corresponding to the locking post is provided on the filter disc. The locking post is locked inside the docking groove, and fixing posts are symmetrically fixedly connected to the surface of the filter disc in a lateral position.

[0014] Preferably, the quick-release assembly includes a bracket fixedly connected to the top surface of the cooling fan, with limit rods fixedly connected to both ends of the bracket, a horizontal plate slidably connected to the limit rods, and toothed plates fixedly connected to both ends of the horizontal plate.

[0015] Preferably, the toothed plate and the gear mesh with each other, the gear is fixedly connected to the top end of the side rod, the side rod is rotatably connected to the shaft seat, the shaft seat is fixedly installed on the side of the cooling fan, and the bottom end of the side rod is fixedly connected to an arm plate, the arm plate being provided with a sliding groove.

[0016] Preferably, a hinge seat is fixedly installed at the middle position on both sides of the cooling fan. A retaining plate is rotatably connected to the hinge seat. A through groove is opened on the retaining plate. A positioning rod is inserted into the through groove. One end of the positioning rod is fixedly connected to the cooling fan. A retaining ring is fixedly connected to the other end of the positioning rod. A slide cylinder is slidably connected to the positioning rod. A second spring is sleeved on the positioning rod. The two ends of the second spring are respectively in contact with one side of the retaining ring and one side of the slide cylinder.

[0017] Preferably, a limiting seat is fixedly connected to the surface of the card plate, a driven rod is fixedly connected to the limiting seat, the top end of the driven rod is slidably connected to the inside of the slide groove, and a wedge block is fixedly installed on one end of the inner side of the card plate, the wedge block is engaged with the card block.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. The present invention has a reasonable structure. When the output shaft rotates at high speed, a scraper is attached to the surface of the output shaft. The scraper is set at an angle and can scrape off the dust on the surface of the output shaft. The dust will then enter the collection box for centralized collection. When it is necessary to disassemble the entire connector, the plug rod is pressed down to make the screw head disengage from the inside of the slot, thereby facilitating the removal of the entire connector on the output shaft.

[0020] 2. In this invention, a cooling fan dissipates heat from the inside of the motor body, and a filter disc prevents dust from entering the motor body. When the filter disc is removed, a fixing post is fixedly connected to the surface of the filter disc. By pulling the fixing post, the filter disc is rotated, which facilitates the locking post to disengage from the docking groove, and the filter disc can be removed as a whole.

[0021] 3. In this invention, when disassembling the cooling fan as a whole, the horizontal plate is pulled, and the movement of the horizontal plate drives the toothed plate to move, thereby facilitating the rotation of the side rod on the gear. The rotation of the side rod drives the shaft seat to move, thereby facilitating the sliding of the driven rod inside the slide groove, allowing the clamping plate to rotate on the hinge seat. The rotation of the clamping plate causes the wedge block to disengage from the clamping block, thereby achieving quick disassembly of the cooling fan without the need for tools. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the motor body;

[0024] Figure 2 This is a side view of the three-dimensional structure of the motor body;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the connector;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the connector viewed from below.

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of a cooling fan;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the rear cover;

[0029] Figure 7 A side view of the three-dimensional structure of a cooling fan;

[0030] Figure 8 for Figure 7 Enlarged structural diagram at point A in the middle.

[0031] In the diagram: 1. Motor body; 101. Rear end cover; 102. Cooling fan; 103. Front end cover; 104. Mounting hole; 105. Output shaft; 2. Connector; 201. Sleeve; 202. Collection box; 203. Ring; 204. Scraper; 205. Connecting plate; 206. Insert rod; 207. Collar; 208. First spring; 209. Screw head; 210. Limiting plate; 211. Slot; 212. Slot; 3. Connecting ring; 301. Side plate; 302. Locking block; 303. Locking ring Column; 304, retaining ring; 305, filter disc; 306, docking groove; 307, fixed column; 4, bracket; 401, limiting rod; 402, horizontal plate; 403, toothed plate; 404, gear; 405, side rod; 406, shaft seat; 407, arm plate; 408, slide groove; 409, hinge seat; 410, clamping plate; 411, through groove; 412, positioning rod; 413, retaining ring; 414, slide cylinder; 415, second spring; 416, limiting seat; 417, driven rod; 418, wedge block. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example: Reference Figure 1 - Figure 8 The stepper motor shown includes a dustproof structure, comprising a motor body 1, a rear end cover 101 fixedly mounted on one end of the motor body 1, a cooling fan 102 detachably mounted on the rear end cover 101, a front end cover 103 fixedly mounted on the other end of the motor body 1, mounting holes 104 provided at the four corners of the front end cover 103, and an output shaft 105 rotatably connected to the front end cover 103; it also includes a dustproof component, a ventilation component, and a quick-release component. The dustproof component is disposed on the output shaft 105 for removing adhering substances from its surface, the ventilation component is disposed on the rear end cover 101 for dissipating heat from the inside of the motor body 1, and the quick-release component is disposed on the cooling fan 102 for installation and use.

[0034] Specifically, it should be noted that the driving methods inside the motor body 1 are all based on existing technologies, and will not be elaborated on further here.

[0035] In one embodiment of this invention, the dustproof assembly includes a connector 2 detachably mounted on the output shaft 105. A sleeve 201 is fixedly connected to the connector 2, and a collection box 202 is fixedly mounted on the sleeve 201. A ring 203 is fixedly mounted on one end of the sleeve 201, and several sets of scrapers 204 are fixedly mounted on the surface of the ring 203. A mating plate 205 is fixedly connected to the surface of the connector 2, and a rod 206 is movably inserted into the mating plate 205. A collar is fixedly connected to the top end of the rod 206. 207. A first spring 208 is sleeved on the insertion rod 206. The two ends of the first spring 208 are fixedly connected to the bottom surface of the collar 207 and the top surface of the docking plate 205, respectively. A screw head 209 is fixedly connected to the bottom end of the insertion rod 206. A limiting plate 210 is fixedly installed on the surface of the front end cover 103 by bolts. A slot 211 is opened on the limiting plate 210. A slot 212 is opened on the bottom surface of the limiting plate 210. The slot 211 and the slot 212 are interconnected. The screw head 209 is locked inside the slot 212.

[0036] Specifically, when the output shaft 105 rotates at high speed, a scraper 204 is attached to the surface of the output shaft 105. The scraper 204 is set at an angle and can scrape off the dust on the surface of the output shaft 105. The dust will then enter the collection box 202 for centralized collection. When it is necessary to disassemble the connector 2 as a whole, the insertion rod 206 is pressed down to make the screw head 209 disengage from the slot 212, thereby facilitating the removal of the connector 2 as a whole from the output shaft 105.

[0037] As one embodiment of this invention, the ventilation assembly includes a docking ring 3 fixedly installed at one end of the rear end cover 101. Side plates 301 are symmetrically fixedly connected to the surface of the docking ring 3. A locking block 302 is fixedly installed on the outer surface of the side plate 301. A locking post 303 is symmetrically fixedly connected inside the docking ring 3. A retaining ring 304 is fixedly connected to one end of the locking post 303. A filter disc 305 is detachably installed inside the docking ring 3. A docking groove 306 corresponding to the locking post 303 is clamped on the filter disc 305. The locking post 303 is clamped inside the docking groove 306. Fixing posts 307 are symmetrically fixedly connected to the transverse position of the surface of the filter disc 305.

[0038] Specifically, the cooling fan 102 dissipates heat inside the motor body 1, and the filter disc 305 prevents dust from entering the motor body 1. When the filter disc 305 is removed, a fixing post 307 is fixedly connected to the surface of the filter disc 305. By pulling the fixing post 307, the filter disc 305 is rotated, which makes it easy for the locking post 303 to disengage from the docking groove 306, and the filter disc 305 can be removed as a whole.

[0039] In one embodiment of this invention, the quick-release assembly includes a bracket 4 fixedly connected to the top surface of the cooling fan 102. Limiting rods 401 are fixedly connected to both ends of the bracket 4. A horizontal plate 402 is slidably connected to the limiting rods 401. Gear plates 403 are fixedly connected to both ends of the horizontal plate 402, meshing with gears 404. Gears 404 are fixedly connected to the top end of a side rod 405. The side rod 405 is rotatably connected to a bearing 406, which is fixedly mounted on the side of the cooling fan 102. An arm plate 407 is fixedly connected to the bottom end of the side rod 405, and a sliding groove 408 is provided on the arm plate 407. Hinge seats 409 are fixedly installed at the middle of both sides of the cooling fan 102, and locking plates 4 are rotatably connected to the hinge seats 409. 10. A through groove 411 is provided on the card plate 410. A positioning rod 412 is inserted into the through groove 411. One end of the positioning rod 412 is fixedly connected to the cooling fan 102. A retaining ring 413 is fixedly connected to the other end of the positioning rod 412. A slide cylinder 414 is slidably connected to the positioning rod 412. A second spring 415 is sleeved on the positioning rod 412. The two ends of the second spring 415 are respectively in contact with one side of the retaining ring 413 and one side of the slide cylinder 414. A limiting seat 416 is fixedly connected to the surface of the card plate 410. A driven rod 417 is fixedly connected to the limiting seat 416. The top end of the driven rod 417 is slidably connected to the inside of the slide groove 408. A wedge block 418 is fixedly installed on one end of the inner side of the card plate 410. The wedge block 418 is locked on the card block 302.

[0040] Specifically, when disassembling the cooling fan 102 as a whole, the horizontal plate 402 is pulled. The movement of the horizontal plate 402 causes the gear plate 403 to move, which facilitates the rotation of the side rod 405 on the gear 404. The rotation of the side rod 405 causes the shaft seat 406 to move, which facilitates the sliding of the driven rod 417 inside the slide groove 408, allowing the clamping plate 410 to rotate on the hinge seat 409. The rotation of the clamping plate 410 causes the wedge block 418 to disengage from the clamping block 302, thereby achieving quick disassembly of the cooling fan 102 without the need for tools.

[0041] Working principle of the invention: When the output shaft 105 rotates at high speed, a scraper 204 is attached to the surface of the output shaft 105. The scraper 204 is set at an angle and can scrape off the dust on the surface of the output shaft 105. The dust will then enter the collection box 202 for collection. When it is necessary to disassemble the connector 2 as a whole, the insertion rod 206 is pressed down to make the screw head 209 disengage from the slot 212, thereby facilitating the removal of the connector 2 as a whole from the output shaft 105.

[0042] The cooling fan 102 dissipates heat from the inside of the motor body 1. The filter disc 305 prevents dust from entering the inside of the motor body 1. When the filter disc 305 is removed, a fixing post 307 is fixedly connected to the surface of the filter disc 305. By pulling the fixing post 307, the filter disc 305 is rotated, which makes it easy for the locking post 303 to disengage from the inside of the docking groove 306, and the filter disc 305 can be removed as a whole.

[0043] When disassembling the cooling fan 102 as a whole, the horizontal plate 402 is pulled. The movement of the horizontal plate 402 causes the gear plate 403 to move, which facilitates the rotation of the side rod 405 on the gear 404. The rotation of the side rod 405 causes the shaft seat 406 to move, which facilitates the sliding of the driven rod 417 inside the slide groove 408, allowing the clamping plate 410 to rotate on the hinge seat 409. The rotation of the clamping plate 410 causes the wedge block 418 to disengage from the clamping block 302, thus enabling the cooling fan 102 to be quickly disassembled without the need for tools.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A stepper motor with a dustproof structure, characterized in that, include The motor body (1) has a rear end cover (101) fixedly installed at one end, and a cooling fan (102) detachably installed on the rear end cover (101). The other end of the motor body (1) has a front end cover (103) fixedly installed. The front end cover (103) has mounting holes (104) at the four corners, and an output shaft (105) is rotatably connected to the front end cover (103). It also includes a dustproof component, a ventilation component and a quick-release component. The dustproof component is disposed on the output shaft (105) for removing deposits from its surface. The ventilation component is disposed on the rear end cover (101) for dissipating heat from the inside of the motor body (1). The quick-release component is disposed on the cooling fan (102) for installation and use. The quick-release assembly includes a bracket (4) fixedly connected to the top surface of the cooling fan (102). Limiting rods (401) are fixedly connected to both ends of the bracket (4). A horizontal plate (402) is slidably connected to the limiting rod (401). Gear plates (403) are fixedly connected to both ends of the horizontal plate (402). The gear plates (403) mesh with gears (404). The gears (404) are fixedly connected to the top end of the side rod (405). The side rod (405) is rotatably connected to the bearing seat (406), the bearing seat (406) is fixedly installed on the side of the cooling fan (102), the bottom end of the side rod (405) is fixedly connected to the arm plate (407), the arm plate (407) is provided with a sliding groove (408), the middle positions of both sides of the cooling fan (102) are fixedly installed with hinge seats (409), the hinge seats (409) are rotatably connected to the clamping plate (410), the clamping plate (410) A through groove (411) is provided on the 0), and a positioning rod (412) is inserted inside the through groove (411). One end of the positioning rod (412) is fixedly connected to the cooling fan (102), and the other end of the positioning rod (412) is fixedly connected to a retaining ring (413). A slide cylinder (414) is slidably connected to the positioning rod (412), and a second spring (415) is sleeved on the positioning rod (412). The two ends of the second spring (415) are respectively connected to the cooling fan (102). One side of the retaining ring (413) and one side of the slide cylinder (414) are in contact with each other. The surface of the retaining plate (410) is fixedly connected to the limiting seat (416). The limiting seat (416) is fixedly connected to the driven rod (417). The top end of the driven rod (417) is slidably connected to the inside of the slide groove (408). A wedge block (418) is fixedly installed on one end of the inner side of the retaining plate (410). The wedge block (418) is locked on the retaining block (302).

2. A stepper motor with a dustproof structure according to claim 1, characterized in that: The dustproof assembly includes a connector (2) detachably mounted on the output shaft (105), a sleeve (201) fixedly connected to the connector (2), a collection box (202) fixedly mounted on the sleeve (201), a ring (203) fixedly mounted on one end of the sleeve (201), and several sets of scrapers (204) fixedly mounted on the surface of the ring (203).

3. A stepper motor with a dustproof structure according to claim 2, characterized in that: A mating plate (205) is fixedly connected to the surface of the connector (2). A rod (206) is movably inserted into the mating plate (205). A collar (207) is fixedly connected to the top of the rod (206). A first spring (208) is sleeved on the rod (206). The two ends of the first spring (208) are fixedly connected to the bottom surface of the collar (207) and the top surface of the mating plate (205), respectively. A screw head (209) is fixedly connected to the bottom end of the rod (206).

4. A stepper motor with a dustproof structure according to claim 3, characterized in that: The front end cover (103) is fixedly mounted with a limiting plate (210) by bolts. The limiting plate (210) has a slot (211) and a slot (212) on its bottom surface. The slot (211) and the slot (212) are interconnected. The screw head (209) is inserted inside the slot (212).

5. A stepper motor with a dustproof structure according to claim 2, characterized in that: The ventilation assembly includes a docking ring (3) fixedly installed at one end of the rear end cover (101). A side plate (301) is symmetrically fixedly connected to the surface of the docking ring (3). A locking block (302) is fixedly installed on the outer surface of the side plate (301). A locking post (303) is symmetrically fixedly connected inside the docking ring (3). A retaining ring (304) is fixedly connected to one end of the locking post (303).

6. A stepper motor with a dustproof structure according to claim 5, characterized in that: The filter disc (305) is detachably installed inside the docking ring (3). The filter disc (305) is fitted with a docking groove (306) corresponding to the locking post (303). The locking post (303) is fitted inside the docking groove (306). The surface of the filter disc (305) is symmetrically and fixedly connected with fixing posts (307) in the transverse position.

Images