Self-locking winder braking structure of dust collector

Abstract

The utility model relates to the technical field of dust collectors, in particular to a dust collector self-locking winder braking structure which comprises a take-up box, a cable is wound on the inner side of the take-up box, a protective cylinder is installed at the front end of the take-up box, the cable penetrates through the protective cylinder in a sliding mode and extends to the outer side of the take-up box, and a button is installed at the upper end of the take-up box. A rotating shaft is rotatably mounted on the inner wall of the inner wall of the take-up box, a first torsion reset spring sleeves the left end of the rotating shaft, a take-up reel is fixedly mounted on the middle side of the rotating shaft, a cable sleeves the take-up reel, a fluted disc is fixedly mounted at the right end of the rotating shaft, a clamping mechanism is clamped in the fluted disc, and a brake mechanism is mounted on the upper side of the clamping mechanism. According to the utility model, the clamping mechanism is matched with the braking mechanism, so that the phenomenon that a cable automatically retracts in the pay-off process is avoided, meanwhile, when the cable needs to be taken up, the cable can be automatically taken up by pressing down a button, and the cable take-up device is simple in structural design, convenient to operate and relatively high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum cleaners, in particular to a self-locking wire reel braking structure for vacuum cleaners. Background Art

[0002] The vacuum cleaner mainly uses the fan impeller of the vacuum cleaner to discharge the air in the impeller out of the fan at high speed under the high-speed drive of the motor, while the air in the dust collection part is continuously replenished into the fan, which can form a higher pressure difference with the outside world. The dust and dirt from the suction nozzle are sucked into the dust collection part along with the air, and pass through the drain to collect the dust and dirt in the dust cylinder.

[0003] The utility model patent with the authorized patent number CN214128429U provides a self-locking wire reel brake structure for a vacuum cleaner, including a driving housing, a wire reel, a wire reel, a mounting frame, a limit roller and a rotating stick. The wire reel is used to wind the power cord, and the two ends are equipped with wire reels to prevent the power cord from falling off the wire reel, thereby winding more power cords; a stepper motor is installed inside the housing to provide power for the wire reel, and no manual reeling is required, so that reeling and releasing the power cord are more convenient; and a limit roller and a rotating stick are provided to clamp the power cord to prevent the power cord from loosening, fix the release length of the power cord, and extend the service life of the power cord; a roller is installed on the bottom sheet, so that this mechanism can move with the vacuum cleaner. It is more convenient to use; and this structure is comprehensive in function, low in cost, simple to operate, and more worthy of promotion and use.

[0004] The above patent has the following defects in daily use: the winding brake device is relatively complex in design and is composed of multiple motors and rotating components inside, which has a high manufacturing cost and is not conducive to popularization and promotion of use. The internal multi-stage braking mechanism is difficult to repair after damage. The inventor proposes a braking structure with simple structure, low manufacturing cost and good winding brake function to solve the above defects. Utility Model Content

[0005] The utility model aims to solve the shortcomings of the prior art and proposes a self-locking wire reel braking structure for a vacuum cleaner.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A self-locking wire reel brake structure for a vacuum cleaner comprises a wire take-up box, a cable is wound up inside the wire take-up box, a protective sleeve is installed at the front end of the wire take-up box, the cable slides through the protective sleeve and extends to the outside of the wire take-up box, a button is installed at the upper end of the wire take-up box, a rotating shaft is rotatably installed on the inner wall of the wire take-up box, a first torsion reset spring is sleeved on the left end of the rotating shaft, a wire take-up disk is fixedly installed on the middle side of the rotating shaft, the cable is sleeved on the wire take-up disk, a toothed disk is fixedly installed on the right end of the rotating shaft, a clamping mechanism is clamped in the toothed disk, and a braking mechanism is installed on the upper side of the clamping mechanism.

[0008] Preferably, the clamping mechanism comprises a mounting plate, an axle seat, a roller shaft and a limit plate, the axle seat is fixedly mounted on the mounting plate, the roller shaft is rotatably mounted between the axle seats, and the limit plate is fixedly connected to the roller shaft.

[0009] Preferably, second torsion return springs are sleeved and installed at both ends of the roller shaft, and a resistance block is fixedly installed on the mounting plate, and the resistance block is in contact with the limit plate.

[0010] Preferably, the lower end of the limit plate is arranged in an oblique tooth shape, and the size of the lower end of the limit plate is adapted to the tooth groove of the gear disk.

[0011] Preferably, the braking mechanism comprises a permanent magnet, a mounting groove and an electromagnet, the mounting groove is provided on the inner wall of the wire take-up box, the permanent magnet is slidably connected to the inner wall of the mounting groove, and the electromagnet is fixedly mounted at the bottom of the mounting groove.

[0012] Preferably, the electromagnet is electrically connected to the button, and an insulating pad is installed at the lower end of the electromagnet.

[0013] Preferably, a plug is installed at the end of the cable.

[0014] In the utility model, the self-locking wire reel braking structure of the vacuum cleaner is described as follows: Figure 3The automatic wire-winding capability of the device is provided by the first torsion return spring. When the cable is dragged outward, the cable will drive the wire-winding drum to rotate, and the wire-winding drum will drive the rotating shaft to rotate. At this time, the first torsion return spring sleeved on the rotating shaft stores torsional force under the rotation of the wire-winding drum, and provides torsional force to drive the wire-winding drum to reverse and wind up the wire. Due to the cooperation of the clamping mechanism and the braking structure, the wire-winding drum cannot be reversed. When the same poles of the electromagnet and the permanent magnet repel each other, the magnetic repulsion force drives the permanent magnet to slide to the outside of the installation groove, and then the installation plate drives the limit plate to be clamped into the tooth groove of the toothed disk. The limit plate in the clamping mechanism is subjected to the torsional action of the second torsion return spring to contact the resistance block, so the limit plate cannot rotate counterclockwise, but can rotate clockwise. When the wire-winding drum is releasing the wire, that is, the wire-winding drum is counterclockwise. When the needle rotates, the engagement and clamping action of the toothed disc and the limit plate drives the limit plate to rotate clockwise, and the toothed disc will not be limited by the limit plate. At the same time, when the take-up reel is performing the clockwise take-up action, the limit plate is driven to rotate counterclockwise. Since the limit plate cannot rotate counterclockwise, the take-up reel is limited when taking up the line. Under normal working conditions, the cable can be manually pulled out from the inside of the take-up box, and the cable will not retract automatically when the hand is released. When the line needs to be reeled in, the button is pressed, and the button changes the power supply direction of the electromagnet, thereby changing the magnetic poles at both ends of the electromagnet, and receiving the effect of opposite poles attracting each other, the permanent magnet drives the limit plate to slide upward, and exits the clamping action on the take-up reel. The take-up reel rotates clockwise under the torsion of the first torsion reset spring, and then the cable is taken up.

[0015] The utility model has a reasonable design. The first torsion reset spring is provided to provide a wire-winding function. The clamping mechanism and the braking mechanism are coordinated to prevent the cable from automatically retracting during the wire-releasing process. At the same time, when the wire needs to be wound up, the button can be pressed to drive the clamping mechanism to move up through the braking mechanism to release the limiting effect. Then, the automatic wire winding is completed under the action of the first torsion reset spring. The device has a simple structural design, is easy to operate, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a self-locking wire reel braking structure for a vacuum cleaner proposed by the utility model;

[0017] Figure 2 A schematic diagram of the internal structure of a self-locking wire reel brake structure for a vacuum cleaner proposed in the utility model Figure 1 ;

[0018] Figure 3 A schematic diagram of the internal structure of a self-locking wire reel brake structure for a vacuum cleaner proposed in the utility model Figure 2 ;

[0019] Figure 4 This is a cross-sectional diagram of the brake mechanism installation.

[0020] In the figure: 1. wire take-up box; 2. cable; 3. protective sleeve; 4. button; 5. rotating shaft; 6. first torsion return spring; 7. wire take-up reel; 8. toothed disc; 9. mounting plate; 10. shaft seat; 11. roller; 12. second torsion return spring; 13. limit plate; 14. resistance block; 15. permanent magnet; 16. mounting slot; 17. electromagnet; 18. insulating pad; 19. plug. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A self-locking wire reel brake structure for a vacuum cleaner comprises a wire take-up box 1, a cable 2 is wound inside the wire take-up box 1, a protective tube 3 is installed at the front end of the wire take-up box 1, the cable 2 slides through the protective tube 3 and extends to the outside of the wire take-up box 1, a button 4 is installed at the upper end of the wire take-up box 1, a rotating shaft 5 is rotatably installed on the inner wall of the wire take-up box 1, a first torsion return spring 6 is sleeved on the left end of the rotating shaft 5, a wire take-up disk 7 is fixedly installed on the middle side of the rotating shaft 5, the cable 2 is sleeved on the wire take-up disk 7, a toothed disk 8 is fixedly installed on the right end of the rotating shaft 5, a clamping mechanism is clamped in the toothed disk 8, a braking mechanism is installed on the upper side of the clamping mechanism, and a plug 19 is installed at the end of the cable 2.

[0023] In this embodiment, the clamping mechanism includes a mounting plate 9, an axle seat 10, a roller shaft 11 and a limit plate 13. A resistance block 14 is fixedly mounted on the mounting plate 9, the resistance block 14 is in contact with the limit plate 13, the lower end of the limit plate 13 is arranged in an oblique tooth shape, and the size of the lower end of the limit plate 13 is adapted to the tooth groove of the gear plate 8. The axle seat 10 is fixedly mounted on the mounting plate 9, the limit plate 13 is fixedly connected to the roller shaft 11, the roller shaft 11 is rotatably mounted between the axle seats 10, and a second torsion return spring 12 is sleeved on both ends of the roller shaft 11.

[0024] Through the above structure, reference Figure 3 , the limit plate 13 is subjected to the torsion force of the second torsion return spring 12 and contacts the contact block 14, then the limit plate 13 cannot rotate counterclockwise, but can rotate clockwise, when the take-up drum 7 is releasing the line, that is, the take-up drum 7 rotates counterclockwise, the engagement and clamping action of the toothed disc 8 and the limit plate 13 drives the limit plate 13 to rotate clockwise, and the toothed disc 8 will not be limited by the limit plate 13. At the same time, when the take-up drum 7 is performing the clockwise winding action, the limit plate 13 is driven to rotate counterclockwise. Since the limit plate 13 cannot rotate counterclockwise, it is limited when the take-up drum 7 is taking up the line. Under normal working conditions, the cable 2 can be manually drawn out from the inside of the take-up box 1, and the cable 2 will not automatically retract when the hand is released.

[0025] In this embodiment, the braking mechanism includes a permanent magnet 15, a mounting groove 16 and an electromagnet 17. The electromagnet 17 is electrically connected to the button 4. An insulating pad 18 is installed at the lower end of the electromagnet 17. The permanent magnet 15 is slidably connected to the inner wall of the mounting groove 16. The mounting groove 16 is opened on the inner wall of the wire receiving box 1, and the electromagnet 17 is fixedly installed at the bottom of the mounting groove 16.

[0026] Through the above structure, when the electromagnet 17 and the permanent magnet 15 have the same poles that repel each other, the magnetic repulsion force drives the permanent magnet 15 to slide to the outside of the mounting groove 16, and then the mounting plate 9 drives the limit plate 13 to engage in the tooth groove of the toothed disc 8. When the button is pressed to change the magnetic pole direction of the electromagnet 17, opposite poles attract each other, and under the action of the magnetic attraction force, the permanent magnet 15 and the limit plate 13 below it are driven to withdraw from the engaging effect on the toothed disc 8.

[0027] In the present utility model, when in use, Figure 3 As shown, when the cable 2 is dragged outward, the cable 2 will drive the take-up drum 7 to rotate, and the take-up drum 7 will drive the rotating shaft 5 to rotate. At this time, the first torsion reset spring 6 installed on the rotating shaft 5 stores torsional force under the rotation of the take-up drum 7, and provides torsional force to drive the take-up drum 7 to reverse and take up the line. Due to the cooperation of the clamping mechanism and the braking structure, the take-up drum cannot be reversed. When the electromagnet 17 and the permanent magnet 15 repel each other with the same poles, the magnetic repulsion force drives the permanent magnet 15 to slide to the outside of the mounting groove 16, and then the mounting plate 9 drives the limit plate 13 to be clamped into the tooth groove of the toothed disk 8. The limit plate 13 in the clamping mechanism is subjected to the torsional force of the second torsion reset spring 12 to contact the contact block 14, so that the limit plate 13 cannot rotate counterclockwise, but can rotate clockwise. When the take-up drum 7 is in the process of releasing the line, that is, the take-up drum 7 rotates counterclockwise, the toothed disk 8 and the limit plate 13 are connected to the stop block 14. The meshing and clamping action of plate 13 drives the limit plate 13 to rotate clockwise, and the toothed disc 8 will not be limited by the limit plate 13. At the same time, when the take-up drum 7 performs the clockwise winding action, the limit plate 13 is driven to rotate counterclockwise. Since the limit plate 13 cannot rotate counterclockwise, the take-up action of the take-up drum 7 is limited. Under normal working conditions, the cable 2 can be manually drawn out from the inside of the take-up box 1, and the cable 2 will not retract automatically when the hand is released. When it is necessary to wind up the line, press button 4, and button 4 changes the power supply direction of electromagnet 17, thereby changing the magnetic poles at both ends of electromagnet 17, and receiving the effect of opposite poles attracting each other, the permanent magnet 15 drives the limit plate 13 to slide upward, and exits the clamping action on the take-up drum 7. Then the take-up drum 7 rotates clockwise under the torsional force of the first torsion reset spring 6, and then the cable 2 is wound up.

[0028] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A self-locking cable reel braking structure for a vacuum cleaner, characterized in that: The invention comprises a wire take-up box (1), wherein a cable (2) is wound inside the wire take-up box (1), a protective tube (3) is installed at the front end of the wire take-up box (1), the cable (2) slides through the protective tube (3) and extends to the outside of the wire take-up box (1), a button (4) is installed at the upper end of the wire take-up box (1), a rotating shaft (5) is rotatably installed on the inner wall of the wire take-up box (1), a first torsion return spring (6) is sleeved on the left end of the rotating shaft (5), a wire take-up disk (7) is fixedly installed on the middle side of the rotating shaft (5), the cable (2) is sleeved on the wire take-up disk (7), a toothed disk (8) is fixedly installed on the right end of the rotating shaft (5), a clamping mechanism is clamped inside the toothed disk (8), and a braking mechanism is installed on the upper side of the clamping mechanism.

2. A self-locking cable reel braking structure for a vacuum cleaner according to claim 1, characterized in that: The clamping mechanism comprises a mounting plate (9), an axle seat (10), a roller shaft (11) and a limit plate (13); the axle seat (10) is fixedly mounted on the mounting plate (9); the roller shaft (11) is rotatably mounted between the axle seats (10); and the limit plate (13) is fixedly connected to the roller shaft (11).

3. A self-locking cable reel brake structure for a vacuum cleaner according to claim 2, characterized in that: Second torsion return springs (12) are sleeved and mounted on both ends of the roller shaft (11), and a resistance block (14) is fixedly mounted on the mounting plate (9), wherein the resistance block (14) is in contact with the limit plate (13).

4. A self-locking cable reel braking structure for a vacuum cleaner according to claim 2, characterized in that: The lower end of the limiting plate (13) is arranged in an oblique tooth shape, and the size of the lower end of the limiting plate (13) is adapted to the tooth groove of the toothed disc (8).

5. The self-locking cable reel braking structure of a vacuum cleaner according to claim 1, characterized in that: The braking mechanism comprises a permanent magnet (15), a mounting groove (16) and an electromagnet (17); the mounting groove (16) is formed on the inner wall of the wire take-up box (1); the permanent magnet (15) is slidably connected to the inner wall of the mounting groove (16); and the electromagnet (17) is fixedly mounted on the bottom of the mounting groove (16).

6. A self-locking cable reel brake structure for a vacuum cleaner according to claim 5, characterized in that: The electromagnet (17) is electrically connected to the button (4), and an insulating pad (18) is installed at the lower end of the electromagnet (17).

7. A self-locking cable reel braking structure for a vacuum cleaner according to claim 1, characterized in that: A plug (19) is installed at the end of the cable (2).

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