Drive mechanism and dust scraping device

Abstract

The utility model discloses a drive mechanism and scrape ash device, include: base, transmission rod, rotatablely installed in the base, the transmission rod week side is equipped with spiral reciprocating groove, connecting piece, partial sliding embedding in spiral reciprocating groove, push rod piece, with connecting piece fixed connection, electric motor, install in the base, and with transmission rod transmission connection, wherein, when transmission rod under the drive of electric motor rotates along single rotation direction, connecting piece under the action of spiral reciprocating groove drives push rod piece and reciprocates in the axial direction of transmission rod between first limit position and second limit position. The utility model adopts the above structure, makes electric motor not need frequently switching forward rotation or reverse rotation, improves the service life of electric motor and reciprocating efficiency of connecting piece, and control logic is simple.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a drive mechanism and a dust scraping device. Background Technology

[0002] During cleaning, hair easily gets tangled in the annular filter screen of the vacuum cleaner's dust cup, requiring manual cleaning by the user. To avoid this manual cleaning, Chinese invention patent CN118716929A discloses a vacuum cleaner equipped with a dust-scraping mechanism. This mechanism can move along the axial direction of the annular filter screen from an initial scraping position to an end scraping position to remove dirt. Existing dust-scraping mechanisms are driven by an electric motor and a screw. Initially, the dust-scraping mechanism is in the initial position, and the electric motor drives the screw to rotate clockwise, moving it towards the end position. When the dust-scraping mechanism reaches the end position, the electric motor drives the screw to rotate counterclockwise, moving it back to the initial position. When the dust-scraping mechanism returns to the initial position, the electric motor stops rotating, completing one dust-scraping operation.

[0003] However, with the above structure, the electric motor needs to rotate in both directions, resulting in low efficiency. Frequent switching between forward and reverse directions can reduce the lifespan of the electric motor, and the control logic is complex.

[0004] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0005] The purpose of this utility model is to provide a scraping device in which the electric motor can make the scraping part move back and forth between the initial position and the end position without the need for forward and reverse rotation.

[0006] The purpose of this utility model is achieved through the following technical solution: a driving mechanism for driving a scraper, comprising:

[0007] Base;

[0008] A transmission rod is rotatably mounted on the base, and a helical reciprocating groove is provided on the periphery of the transmission rod;

[0009] The connector is partially slidably embedded in the helical reciprocating groove;

[0010] The push rod is fixedly connected to the connecting member;

[0011] An electric motor is mounted on the base and is connected to the transmission rod for transmission.

[0012] When the transmission rod rotates in a single direction under the drive of the electric motor, the connecting member, under the action of the helical reciprocating groove, drives the push rod to move back and forth along the axial direction of the transmission rod to the first limit position and the second limit position.

[0013] Furthermore, the reciprocating spiral groove is a closed-loop structure composed of two symmetrically distributed spiral grooves, the spiral directions of the two spiral grooves are opposite, and the phase difference is 180°.

[0014] One of the spiral grooves is adapted to move the push rod from the first extreme position to the second extreme position, and the other spiral groove is adapted to move the push rod from the second extreme position to the first extreme position.

[0015] Furthermore, the first ends of the two spiral grooves are smoothly connected by a circular arc transition section, and the tail ends are smoothly connected by a circular arc transition section. The connector is adapted to smoothly turn from one of the spiral grooves to the other spiral groove via the circular arc transition section.

[0016] Furthermore, the helical reciprocating groove is recessed inward from the outer surface of the transmission rod; or, the transmission rod includes a transmission rod body and a plurality of contour blocks detachably fixed to the outer surface of the transmission rod body, the contour blocks defining the helical reciprocating groove.

[0017] Furthermore, the base includes:

[0018] The first seat has a long strip-shaped structure for mounting the transmission rod;

[0019] The second seat is connected to one end of the first seat and is used to mount the electric motor;

[0020] The axial direction of the transmission rod is parallel to the length direction of the first seat, and the push rod is sleeved outside the first seat and can slide along the length direction of the first seat.

[0021] Furthermore, the first seat has an inwardly recessed mounting groove on its side wall, which extends to both ends of the first seat. The transmission rod is received in the mounting groove, and its two ends are rotatably connected to the side wall of the mounting groove in the length direction. The connecting part extends out of the groove of the mounting groove to connect with the push rod.

[0022] Furthermore, the side wall of the first seat is recessed inward to form a sliding groove, the sliding groove extends to both ends of the first seat, and the push rod slides in cooperation with the sliding groove.

[0023] Furthermore, the connector includes:

[0024] The embedded part is slidably embedded in the spiral reciprocating groove, and its outer contour is adapted to the inner contour of the spiral reciprocating groove;

[0025] The connecting rod has one end connected to the embedded part, and the other end extends radially along the transmission rod to the outside of the mounting groove;

[0026] The push rod is connected to the connecting rod.

[0027] Furthermore, the push rod includes:

[0028] A sleeve portion is fitted outside the first base portion, and the sleeve portion has an installation hole extending inward from its inner wall.

[0029] The push rod is used for transmission cooperation with the scraper component;

[0030] A receiving part is provided between the sleeve part and the push rod part;

[0031] The embedded part can be installed into the spiral reciprocating groove through the mounting hole. A snap fastener is snapped into the mounting hole, and the snap fastener cooperates with the mounting hole to limit the connection in the axial and radial directions.

[0032] In addition, this utility model also provides a slagging device, comprising:

[0033] The aforementioned drive mechanism;

[0034] The scraper abuts against the push rod of the drive mechanism;

[0035] Specifically, when the push rod moves to the first limit position, the scraper is in the first scraping position; when the push rod moves to the second limit position, the scraper is in the second scraping position.

[0036] Compared with the prior art, the present invention has the following advantages: The present invention sets up a transmission rod with a helical reciprocating groove, and a connecting member fixed to the push rod is slidably embedded in the helical reciprocating groove. When the transmission rod rotates in a single direction of rotation under the drive of the electric motor, the connecting member drives the push rod to reciprocate between the first and second limit positions along the axial direction of the transmission rod under the action of the helical reciprocating groove. This eliminates the need for the electric motor to frequently switch between forward and reverse rotation, improves the service life of the electric motor and the reciprocating efficiency of the connecting member, and simplifies the control logic. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the installation of the scraping device of this utility model.

[0038] Figure 2 This is a schematic diagram of the drive mechanism of this utility model.

[0039] Figure 3 This is an exploded structural diagram of the transmission rod and connecting parts in this utility model.

[0040] Figure 4 This is a cross-sectional schematic diagram of the drive mechanism in this utility model.

[0041] Figure 5 This is an exploded structural diagram of the push rod and connecting parts in this utility model.

[0042] Figure 6 This is a schematic diagram of the installation of the push rod and the connecting parts in this utility model.

[0043] 1000, Drive mechanism; 2000, Scraper; 3000, Dust cup; 100, Base; 110, First seat; 111, Mounting groove; 112, Slide groove; 120, Second seat; 200, Transmission rod; 210, Helical reciprocating groove; 211, Helical groove; 212, Arc transition section; 220, Transmission rod body; 230, Contouring block; 300, Connecting part; 310, Embedding part; 320, Connecting rod part; 400, Push rod part; 410, Sleeve part; 411, Mounting hole; 412, Locking hole; 413, First locking groove; 420, Push rod part; 430, Receiving part; 440, Buckle part; 441, Buckle body; 442, Buckle part; 443, Second locking groove; 450, Limiting hole; 500, Electric motor. Detailed Implementation

[0044] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0045] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0046] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0047] Please see Figures 1 to 3 As shown, a drive mechanism 1000, corresponding to a preferred embodiment of the present invention, is used to drive a scraper component 2000. The drive mechanism 1000 includes: a base 100; a transmission rod 200 rotatably mounted on the base 100, with a helical reciprocating groove 210 formed on its circumference; a connecting member 300 partially slidably embedded in the helical reciprocating groove 210; a push rod 400 fixedly connected to the connecting member 300; and an electric motor 500 mounted on the base 100 and connected to the transmission rod 200. When the transmission rod 200 rotates in a single direction under the drive of the electric motor 500, the connecting member 300, under the action of the helical reciprocating groove 210, drives the push rod 400 to reciprocate along the axial direction of the transmission rod 200 to a first limit position and a second limit position.

[0048] This invention features a transmission rod 200 with a helical reciprocating groove 210. A connector 300, fixed to a push rod 400, is slidably embedded within the helical reciprocating groove 210. When the transmission rod 200 rotates in a single direction under the drive of the electric motor 500, the connector 300, under the action of the helical reciprocating groove 210, drives the push rod 400 to reciprocate between a first and a second limit position along the axial direction of the transmission rod 200. This eliminates the need for the electric motor 500 to frequently switch between forward and reverse rotation, improving the service life of the electric motor 500 and the reciprocating efficiency of the connector 300. Furthermore, the control logic is simple.

[0049] Further, the base 100 includes a first base portion 110 and a second base portion 120. The first base portion 110 is used to mount the transmission rod 200, and the second base portion 120 is used to mount the electric motor 500. The first base portion 110 and the second base portion 120 are preferably integrally formed to simplify the assembly process. The first base portion 110 has an elongated structure adapted to the transmission rod 200, and the axial direction of the transmission rod 200 is parallel to the length direction of the first base portion 110. A mounting groove 111 is provided on the side wall of the first base portion 110, and the transmission rod 200 is rotatably mounted in the mounting groove 111. The mounting groove 111 extends to both ends of the first base portion 110, and both ends of the transmission rod 200 are rotatably connected to the side wall of the mounting groove 111 along its length. The second base portion 120 is connected to one end of the first base portion 110, and the output end of the electric motor 500 extends into the mounting groove 111 and is fixed to the end of the transmission rod 200.

[0050] Furthermore, the helical reciprocating groove 210 consists of two symmetrically distributed helical grooves 211 forming a closed-loop structure, with the helical grooves 211 extending from one end of the transmission rod 200 to the other. The two helical grooves 211 have opposite helical directions and a phase difference of 180°. One helical groove 211 is adapted to drive the push rod 400 from the first extreme position to the second extreme position, while the other helical groove 211 is adapted to drive the push rod 400 from the second extreme position to the first extreme position. The beginning ends of the two helical grooves 211 are smoothly connected by an arc transition section 212, and the end ends are smoothly connected by another arc transition section 212. The connecting member 300 is adapted to smoothly turn from one helical groove 211 to the other helical groove 211 via the arc transition section 212, thereby realizing the switching of the movement direction.

[0051] In one embodiment, the helical reciprocating groove 210 can be recessed inward from the outer surface of the transmission rod 200, that is, the helical reciprocating groove 210 is directly formed in the transmission rod 200. Alternatively, in another embodiment, the transmission rod 200 includes a transmission rod body 220 and a plurality of contour blocks 230 detachably fixed to the outer surface of the transmission rod body 200, with the helical reciprocating groove 210 defined between the contour blocks 230. Compared to directly forming the helical reciprocating groove 210 in the transmission rod 200, by using contour blocks 230 to define the helical reciprocating groove 210, the position of the contour blocks 230 can be adjusted as needed to facilitate fine-tuning of the helical reciprocating groove 210 to achieve its optimal posture.

[0052] Furthermore, the connector 300 includes an insert portion 310 and a connecting rod portion 320 connected to the insert portion 310. The insert portion 310 and the connecting rod portion 320 are preferably integrally formed to simplify the assembly process. The insert portion 310 is slidably embedded in the helical reciprocating groove 210, and its outer contour matches the inner contour of the helical reciprocating groove 210. Specifically, the insert portion 310 is an arc-shaped block that protrudes from the periphery of the connecting rod portion 320. The arc-shaped concave surface of the insert portion 310 matches the bottom of the helical reciprocating groove 210, forming a uniform surface contact, reducing wear and local stress concentration. The radius of curvature of the arc-shaped concave surface is consistent with the bottom of the helical reciprocating groove 210, forming a self-centering effect. When the connector 300 moves within the groove, it is radially constrained, preventing displacement or skipping due to vibration or inertia. One end of the connecting rod 320 is connected to the insert 310, and the other end extends radially along the transmission rod 200 to the outside of the mounting groove 111 to connect with the push rod 400.

[0053] Furthermore, the push rod 400 is sleeved outside the first seat 110 and can slide along the length direction of the first seat 110. The connecting member 300 extends out of the groove of the mounting groove 111 to connect with the push rod 400. By slidingly engaging the push rod 400 with the first seat 110, the push rod 400 can be reliably guided to slide while avoiding the need for additional guide rail structures, simplifying the overall structure and reducing the overall size. Preferably, the first seat 110 has a groove 112 recessed inward from the side wall, extending to both ends of the first seat 110. The push rod 400 partially engages with the groove 112, making the cross-section of the first seat 110 perpendicular to the length direction U-shape. After the push rod 400 is sleeved on the first seat 110, the two are more tightly and securely connected. In this embodiment, the mounting groove 111 and the sliding groove 112 are recessed from the same side wall. The mounting groove 111 is located in the middle region of the sliding groove 112 in the width direction and is recessed inward from the bottom of the sliding groove 112.

[0054] Furthermore, the push rod component 400 includes a sleeve portion 410, a push rod portion 420, and a receiving portion 430. The inner contour of the sleeve portion 410 is adapted to the outer contour of the first seat portion 110, and it is sleeved on the outside of the first seat portion 110. The push rod portion 420 is used for transmission engagement with the scraper component 2000, and the receiving portion 430 is received between the sleeve portion 410 and the push rod portion 420 to adjust the position of the push rod portion 420 so that it is precisely aligned with the scraper component 2000. Preferably, the sleeve portion 410, the push rod portion 420, and the receiving portion 430 are integrally formed to simplify the assembly process.

[0055] Preferably, refer to Figures 4 to 6 As shown, a mounting hole 411 is formed extending outward from the inner wall of the sleeve portion 410 towards the opening of the mounting groove 111. Specifically, the mounting hole 411 extends radially along the transmission rod 200 to the outer wall of the sleeve portion 410. The insert portion 310 of the connector 300 can be installed from the outside of the sleeve portion 410 through the mounting hole 411 onto the transmission rod 200, and the connecting rod portion 320 of the connector 300 is placed in the mounting hole 411. A snap-fit ​​member 440 is snap-fitted into the mounting hole 411. The snap-fit ​​member 440 and the sleeve portion 410 are adapted to cooperate with the axial and radial limiting connector 300 of the connecting rod portion 320.

[0056] Specifically, the fastener 440 can be inserted into the mounting hole 411 from the outer wall of the sleeve portion 410 and engage with the sleeve portion 410. The fastener 440 includes a fastener body 441 adapted to the contour of the mounting hole 411 and a fastener portion 442 connected to the side wall of the fastener body 441. The mounting hole 411 has a through hole 412 corresponding to the inner wall of the fastener portion 442, and the fastener portion 442 is adapted to engage with the fastener hole 412. Preferably, there are two fastener holes 412, which are arranged opposite to each other, with one fastener portion 442 corresponding to one fastener hole 412. Preferably, the inner contour of the mounting hole 411 is rectangular, which is convenient to process and can prevent mistaken identification. The outer contour of the fastener body 441 is adapted to the inner contour of the mounting hole 411.

[0057] The inner wall of the mounting hole 411 is recessed inward to form a first groove 413. The first groove 413 and the locking hole 412 are respectively located on different inner walls of the mounting hole 411. The first groove 413 is an arc-shaped groove, which is a through structure in the axial direction of the connecting rod portion 320. The end face of the fastener 440 facing the first groove 413 is recessed inward to form a second groove 443. The second groove 443 is also a through structure in the axial direction of the connecting rod portion 320. When the fastener 440 is fastened onto the sleeve portion 410, the first groove 413 and the second groove 443 cooperate to form a limiting hole 450, which is arranged around the periphery of the connecting rod portion 320. The limiting hole 450 can axially limit the embedded part 310 of the connecting rod part 320 to prevent it from disengaging from the helical reciprocating groove 210. At the same time, since the limiting hole 450 is arranged around the connecting rod part 320, it can radially limit the connecting member 300 to ensure reliable transmission of the connecting member 300.

[0058] Furthermore, return Figure 1 As shown, this utility model also provides a dust scraping device, including the aforementioned drive mechanism 1000 and a dust scraper 2000. The dust scraper 2000 is installed in the dust cup 3000 and can reciprocate relative to the dust cup 3000 to realize the dust scraping operation. The dust scraper 2000 abuts against the push rod 400 of the drive mechanism 1000. When the push rod 400 moves to the first limit position, the dust scraper 2000 is in the first dust scraping position. When the push rod 400 moves to the second limit position, the dust scraper 2000 is in the second dust scraping position.

[0059] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A driving mechanism for driving a scraper (2000), characterized in that, include: Base (100); A transmission rod (200) is rotatably mounted on the base (100), and a helical reciprocating groove (210) is provided on the circumference of the transmission rod (200); The connector (300) is partially slidably embedded in the helical reciprocating groove (210); The push rod (400) is fixedly connected to the connecting member (300); An electric motor (500) is mounted on the base (100) and is connected to the transmission rod (200) in a transmission manner; When the transmission rod (200) rotates in a single direction under the drive of the electric motor (500), the connecting member (300) drives the push rod (400) to move back and forth along the axial direction of the transmission rod (200) to the first limit position and the second limit position under the action of the helical reciprocating groove (210).

2. The driving mechanism as described in claim 1, characterized in that, The reciprocating spiral groove (210) is a closed-loop structure consisting of two symmetrically distributed spiral grooves (211). The spiral directions of the two spiral grooves (211) are opposite and the phase difference is 180°. One of the spiral grooves (211) is adapted to drive the push rod (400) from the first extreme position to the second extreme position, and the other spiral groove (211) is adapted to drive the push rod (400) from the second extreme position to the first extreme position.

3. The driving mechanism as described in claim 2, characterized in that, The first ends of the two spiral grooves (211) are smoothly connected by an arc transition section (212), and the tail ends are smoothly connected by an arc transition section (212). The connector (300) is adapted to smoothly turn from one of the spiral grooves (211) to the other spiral groove (211) via the arc transition section (212).

4. The driving mechanism as described in claim 2, characterized in that, The helical reciprocating groove (210) is recessed inward from the outer surface of the transmission rod (200); or, the transmission rod (200) includes a transmission rod body (220) and a plurality of contour blocks (230) detachably fixed to the outer surface of the transmission rod body (220), the contour blocks (230) defining the helical reciprocating groove (210).

5. The driving mechanism as described in claim 1, characterized in that, The base (100) includes: The first seat (110) has a long strip structure for mounting the transmission rod (200); The second seat (120) is connected to one end of the first seat (110) and is used to mount the electric motor (500); The axial direction of the transmission rod (200) is parallel to the length direction of the first seat (110), and the push rod (400) is sleeved on the outside of the first seat (110) and can slide along the length direction of the first seat (110).

6. The driving mechanism as described in claim 5, characterized in that, The first seat (110) has an inwardly recessed mounting groove (111) on its side wall. The mounting groove (111) extends to both ends of the first seat (110). The transmission rod (200) is received in the mounting groove (111) and its two ends are rotatably connected to the side wall of the mounting groove (111) in the length direction. The connector (300) extends out of the groove of the mounting groove (111) to connect with the push rod (400).

7. The driving mechanism as described in claim 5, characterized in that, The first seat (110) has an inwardly recessed sidewall forming a groove (112), which extends to both ends of the first seat (110), and the push rod (400) slides in cooperation with the groove (112).

8. The driving mechanism as described in claim 6, characterized in that, The connector (300) includes: The embedded part (310) is slidably embedded in the spiral reciprocating groove (210), and its outer contour is adapted to the inner contour of the spiral reciprocating groove (210); The connecting rod (320) is connected at one end to the embedded part (310) and at the other end extends radially along the transmission rod (200) to the outside of the mounting groove (111); The push rod (400) is connected to the connecting rod (320).

9. The driving mechanism as described in claim 8, characterized in that, The push rod (400) includes: A sleeve portion (410) is sleeved outside the first seat portion (110), and the sleeve portion (410) has a mounting hole (411) extending outward from its inner wall; The push rod (420) is used for transmission cooperation with the scraper (2000); The receiving part (430) is received between the sleeve part (410) and the push rod part (420); The embedded part (310) can be installed into the spiral reciprocating groove (210) through the mounting hole (411). A snap fastener (440) is snapped into the mounting hole (411). The snap fastener (440) cooperates with the mounting hole (411) to limit the connector (300) in the axial and radial directions.

10. A ash scraping device, characterized in that, include: The drive mechanism (1000) as described in any one of claims 1 to 9; The scraper (2000) abuts against the push rod (400) of the drive mechanism (1000); When the push rod (400) moves to the first limit position, the scraper (2000) is in the first scraping position; when the push rod (400) moves to the second limit position, the scraper (2000) is in the second scraping position.

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