A cord reel and window cleaning robot base station

Abstract

A winding device and window cleaning robot base station, relating to the technical field of cleaning equipment. The winding device comprises a winding disc and a motor, and a transmission assembly is arranged between the winding disc and the motor. The transmission assembly comprises: a driving part connected to the power output end of the motor; a driven part connected to the winding disc; the driven part and the driving part are oppositely arranged and form a helical tooth meshing pair on the opposite end faces; one of the driving part and the driven part is an axial fixed part, and the other is an axial movable part; an engagement driving element is used to apply a force to the axial movable part to make it close to the axial fixed part, so that the helical tooth meshing pair is engaged; a separation driving element is used to apply a force to the axial movable part to make it away from the axial fixed part, so that the helical tooth meshing pair is separated; the force of the engagement driving element is configured to be able to overcome the force of the separation driving element. The winding device can improve the noise problem and improve the user experience.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, and in particular to a cable reel and a window cleaning robot base station. Background Technology

[0002] The cable reel is a key component in the window cleaning robot base station used for reeling in and out of the cable. In existing technologies, ratchet mechanisms are commonly used to achieve the one-way locking and releasing function of the cable. For example, Chinese patent document CN222751922U discloses a cable winding structure and a window cleaning base station, which includes a rotating shaft, a ratchet with a ratchet groove, a rotatably connected drive hook, and a drive elastic element. During operation, the drive assembly drives the rotating shaft to rotate forward, and the drive elastic element drives the drive hook to engage with the ratchet groove to transmit torque; when the cable reel rotates in the reverse direction, the drive hook overcomes the force of the drive elastic element and disengages from the ratchet groove, achieving unloaded cable feeding.

[0003] However, in these ratchet-based cord reels, frequent and periodic rigid impacts occur between the drive hook and the ratchet teeth when the user (or window cleaning machine) continuously pulls the cord outward, producing an unpleasant "clicking" sound. This noise is particularly noticeable in quiet indoor environments, severely impacting the user experience. Utility Model Content

[0004] One of the purposes of this invention is to provide a cable reel to improve noise issues and enhance the user experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a cable reel, comprising a cable reel and a motor for driving the cable reel to rotate, wherein a transmission assembly is provided between the cable reel and the motor, the transmission assembly comprising:

[0006] An active component is connected to the power output terminal of the motor;

[0007] A driven member is connected to the winding reel;

[0008] The driven member and the driving member are arranged opposite to each other, and their opposite end faces are formed with mutually cooperating inclined teeth to form an inclined tooth meshing pair.

[0009] One of the driving member and the driven member is fixed in the axial direction as an axially fixed member; the other is movable in the axial direction as an axially movable member.

[0010] A drive element is used to apply a force to the axially movable member to bring it closer to the axially fixed member so as to engage the helical gear meshing pair.

[0011] A separation drive element is used to apply a force to the axially movable member to cause it to move away from the axially fixed member, so as to separate the helical gear meshing pair.

[0012] The force of the engagement drive element is configured to overcome the force of the disengagement drive element.

[0013] Furthermore, the engagement drive element and the disengagement drive element are configured as follows:

[0014] During winding, the force applied by the engagement drive element overcomes the force applied by the disengagement drive element, causing the helical tooth meshing pair to engage, so that the power of the motor can be transmitted to the winding reel to wind up the rope.

[0015] During the unwinding process, the force applied by the engagement drive element is removed or reduced, and the force applied by the disengagement drive element drives the helical tooth meshing pair to disengage, allowing the winding reel to rotate freely.

[0016] Furthermore, the separation drive element is an elastic element.

[0017] Furthermore, the elastic element is a spring, with one end of the spring acting on the axially movable member and the other end acting on the axially fixed member.

[0018] Furthermore, the engagement drive element is an electromagnetic drive unit, which generates a force when energized to bring the axially movable member closer to the axially fixed member.

[0019] Furthermore, the electromagnetic drive unit includes a fixedly mounted electromagnet and a correspondingly mounted magnetic conductive element that can be attracted by it.

[0020] Furthermore, the electromagnet is fixedly disposed relative to the axial fixing member, and the magnetic conductive member is fixedly disposed relative to the axial movable member.

[0021] Furthermore, when the active component is an axially movable component, the active component is coaxially and axially movablely connected to the power output end of the motor through a circumferential limiting structure that can transmit torque.

[0022] When the driven member is an axially movable member, the driven member is coaxially and axially movablely connected to the winding reel through a circumferential limiting structure that can transmit torque.

[0023] Furthermore, the inclined tooth has an inclined surface and a radially extending drive side.

[0024] Another objective of this utility model is to provide a window cleaning robot base station, which includes a base station body and the aforementioned cable reel is provided on the base station body.

[0025] The cable reel of this invention exhibits fundamentally improved noise characteristics during operation: During the take-up phase, the helical tooth meshing pair engages under the action of the engagement drive element, producing only a one-time, brief impact sound. Furthermore, the force of the engagement drive element can be partially offset by the force of the disengagement drive element, thereby slowing down the engagement impact speed and further weakening the intensity of the impact sound. During the unwinding phase, the helical tooth meshing pair disengages under the action of the disengagement drive element, preventing the reel from producing a periodic "clicking" impact sound like a ratchet mechanism during rotation, thus effectively improving the noise problem. Attached Figure Description

[0026] Figure 1 A 3D view of a cable reel;

[0027] Figure 2 Disassembly of the cable reel Figure 1 ;

[0028] Figure 3 Disassembly of the cable reel Figure 2 ;

[0029] Figure 4 Disassembly of transmission components Figure 1 ;

[0030] Figure 5 Disassembly of transmission components Figure 2 ;

[0031] Figure 6 Disassembly of transmission components Figure 3 .

[0032] In the picture:

[0033] 1 - Cable reel; 2 - Motor

[0034] 3 – Driving component; 4 – Driven component

[0035] 5— Inclined teeth; 6— Elastic element

[0036] 7a - Electromagnet 7b - Magnetic conductor

[0037] 8a – Annular protrusion; 8a1 – Annular groove

[0038] 8b – Annular groove; 9 – Reduction gear set

[0039] 10a – Anti-rotation part; 10b – Anti-rotation slot. Detailed Implementation

[0040] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0041] Example 1

[0042] like Figure 1-6 As shown, this embodiment provides a cable reel, including a cable reel 1, a motor 2 for driving the cable reel 1 to rotate, and a transmission assembly. A rope is wound on the cable reel 1, with the first end of the rope fixed to the reel 1 and the second end used to connect to external equipment (such as a window cleaning robot). The transmission assembly is located between the cable reel 1 and the motor 2, and is used to transmit torque and control the engagement and disengagement of power.

[0043] The transmission assembly mainly includes the driving component 3, the driven component 4, the engagement drive element, and the disengagement drive element.

[0044] The driving element 3 is coaxially connected to the power output end of the motor 2 and can rotate synchronously, used to receive and transmit the driving force of the motor 2. The driven element 4 is coaxially connected to the winding reel 1 and can rotate synchronously, used to cooperate with the driving element 3 to transmit or interrupt power.

[0045] like Figure 5 , 6 As shown, both the driving member 3 and the driven member 4 are disc-shaped, coaxial, and with their end faces facing each other. On their opposing end faces are mutually engaging, circumferentially distributed helical teeth 5, forming a helical tooth meshing pair. Specifically, the helical teeth 5 have inclined surfaces and radially extending driving sides (usually vertical surfaces). The driving sides are used to abut against each other after the helical tooth meshing pair engages to transmit torque.

[0046] For the driving member 3 and the driven member 4, one of them is fixed in the axial direction, serving as an axially fixed member; the other is movable in the axial direction, serving as an axially movable member. In this embodiment, the driving member 3 serves as an axially movable member, and the driven member 4 serves as an axially fixed member.

[0047] In this embodiment, the separation drive element is selected as an elastic element 6, such as a spring, specifically a compression spring. The compression spring is housed between the axially movable member (driving member 3) and the axially fixed member (driven member 4), with its two ends acting on the two members respectively, and the elastic force always driving the two to move away from each other. Specifically, as shown in the example... Figure 4-6As shown, an annular protrusion 8a is formed on the lower outer periphery of the driving member 3, and an annular groove 8a1 is formed on the annular protrusion 8a. A corresponding annular groove 8b is formed on the upper outer periphery of the driven member 4. The annular protrusion 8a and the annular groove 8b fit together to form a mating structure that can rotate relative to each other and slide axially, thereby providing installation space and guidance for the compression spring. One end of the compression spring is housed in the annular groove 8a1 of the annular protrusion 8a, and the other end is housed in the annular groove 8b of the driven member 4. To ensure reliable connection, the axial dimensions of the annular protrusion 8a and the annular groove 8b are configured such that even when the helical gear meshing pair is completely disengaged, they still maintain at least partial overlap, thereby preventing the driving member 3 and the driven member 4 from completely disengaging.

[0048] In this embodiment, the engagement driving element is an electromagnetic drive unit. The electromagnetic drive unit includes an electromagnet 7a and a magnetically conductive element 7b (such as an adsorption block made of magnetically conductive material) that can be attracted by it. The electromagnet 7a is fixedly disposed relative to the axially fixed member (driven member 4). Specifically, the electromagnet 7a is fixedly mounted on a fixed housing, which includes, but is not limited to, a fixed shaft for mounting the reel 1, or an integral bracket for mounting the various components of the reel. The magnetically conductive element 7b is fixedly disposed relative to the axially movable member (driven member 3). Specifically, the magnetically conductive element 7b is fixedly mounted on the driven member 3. The electromagnetic attraction generated when the electromagnet 7a is energized is configured to overcome the elastic force of the compression spring.

[0049] For example, the driven member 4 is coaxially fixedly connected to the reel 1 via a spline structure, allowing them to rotate synchronously. The reel 1 is mounted on a fixed shaft via a bearing assembly and can rotate around the fixed shaft. The electromagnet 7a is fixedly mounted on the upper end of the fixed shaft, remaining stationary. Corresponding to the mounting position of the electromagnet 7a, a through hole is formed in the middle of the driven member 4, allowing the fixed electromagnet 7a to protrude upwards. The driving member 3 extends downwards from the middle to form a boss. The magnetic conductor 7b is fixedly mounted on the lower end of the boss, its position corresponding vertically to the electromagnet 7a protruding from the through hole of the driven member 4. The boss slidably passes through the through hole of the driven member 4, allowing the magnetic conductor 7b to move closer to or further away from the electromagnet 7a when the driving member 3 moves axially.

[0050] It should be noted that the power output end of motor 2 refers to different things depending on the configuration: In this embodiment, motor 2 is connected to a reduction gear set 9, and the driving member 3 is coaxially connected to the output gear of the reduction gear set 9. In this case, the power output end of motor 2 is the output shaft of the reduction gear set 9. As another equivalent configuration, a geared motor can also be used, and the driving member 3 can be directly coaxially connected to the output shaft of the geared motor. In this case, the power output end of motor 2 is the output shaft of the geared motor.

[0051] When the driving member 3 is an axially movable member, it is coaxially and axially movablely connected to the power output end of the motor 2 through a circumferential limiting structure that can transmit torque, so that it can rotate synchronously and move axially to approach or move away from the driven member 4. At this time, the driven member 4 is coaxially and fixedly connected to the winding reel 1 (e.g., through a spline structure). Similarly, when the driven member 4 is an axially movable member, it is coaxially and axially movablely connected to the winding reel 1 through a similar circumferential limiting structure. At this time, the driving member 3 is coaxially and fixedly connected to the power output end of the motor 2.

[0052] This embodiment uses the active component 3 as an axially movable component as an example. One specific implementation of the circumferential limiting structure is as follows: Figure 2 , 3 As shown, the lower end of the power output end of motor 2 (such as the output gear / output shaft of reduction gear set 9) is provided with an anti-rotation part 10a, and the upper end of the driving member 3 is correspondingly provided with an anti-rotation slot 10b (such as a waist-shaped hole or other non-circular hole) that slides with it. The anti-rotation part 10a and the power output end of motor 2 are connected by a key or integrally formed to achieve synchronous rotation, and are slidably inserted into the anti-rotation slot 10b, so that the driving member 3 can move axially along the anti-rotation part 10a but cannot rotate circumferentially. To further ensure the movement stroke, the anti-rotation slot 10b is preferably a blind hole structure, and an axial gap is reserved between the bottom end of the anti-rotation part 10a and the bottom wall of the anti-rotation slot 10b for the axial movement of the driving member 3. When the driving member 3 is an axially movable member, the coaxial and axially movable connection between the driven member 4 and the winding reel 1 can also be achieved using a similar anti-rotation structure. Of course, the anti-rotation structure can also be a spline structure.

[0053] In this embodiment, the motor 2 and the electromagnet 7a are configured to work in conjunction:

[0054] During the winding process, the control motor 2 and electromagnet 7a are energized simultaneously. The electromagnetic attraction generated by the energized electromagnet 7a overcomes the spring force of the compression spring, driving the driving member 3 to move towards the driven member 4 and engaging the helical gear meshing pair. At the same time, the power of the motor 2 is transmitted to the winding reel 1 through the engaged helical gear meshing pair, thereby winding up the rope.

[0055] During the unwinding process, the control motor 2 and electromagnet 7a are simultaneously de-energized. The electromagnetic attraction of electromagnet 7a disappears, and the elastic force of the compression spring drives the driving member 3 to move away from the driven member 4 and disengage the helical gear meshing pair, thereby cutting off the power transmission. The reel 1 is in a free-rotating state, and the user can easily pull out the rope.

[0056] For the winding process, the timing sequence of first powering the electromagnet 7a and then powering the motor 2 after the helical gear meshing pair engages can also be adopted. However, this embodiment prefers the timing sequence of simultaneous power supply to improve the response speed.

[0057] In this embodiment, the noise characteristics of the reel are fundamentally improved during operation: During the take-up phase, the helical gear engagement pair can be engaged under the electromagnetic attraction of the electromagnet 7a, producing only a one-time, brief collision sound. Furthermore, the electromagnetic attraction of the electromagnet 7a can be partially offset by the elastic force of the compression spring, thereby slowing down the engagement impact speed and further weakening the intensity of the collision sound. During the unwinding phase, the helical gear engagement pair can be disengaged under the elastic force of the compression spring, preventing the reel 1 from producing a periodic "clicking" impact sound like a ratchet mechanism when rotating, effectively improving the noise problem.

[0058] Example 2

[0059] This embodiment provides a window cleaning robot base station, which includes a base station body and a window cleaning robot that can be housed therein. The base station body is equipped with a cable reel as described in Embodiment 1, and the end of the cable reel is connected to the window cleaning robot.

[0060] In addition, the window cleaning robot base station also includes a control module. The control module is electrically connected to the motor 2 and electromagnet 7a of the reel, and is configured to: in response to the operation command of reeling in or unreeling in the wire, synchronously output control signals to the motor 2 and electromagnet 7a, controlling them to be energized or de-energized at the same time, thereby utilizing the low-noise transmission characteristics of the reel to realize the reeling in, unreeling in and control of the window cleaning robot.

[0061] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any content that does not depart from the technical solution of this utility model shall still fall within the patent scope of this utility model.

Claims

1. A cable reel, comprising a reel (1) and a motor (2) for driving the reel (1) to rotate, characterized in that, A transmission assembly is provided between the winding reel (1) and the motor (2), the transmission assembly including: An active component (3) is connected to the power output end of the motor (2); A follower (4) is connected to the winding reel (1); The driven member (4) and the driving member (3) are arranged opposite to each other, and the opposite end faces of the two are formed with mutually cooperating inclined teeth (5) to form an inclined tooth meshing pair; One of the driving member (3) and the driven member (4) is fixed in the axial direction as an axially fixed member; the other is movable in the axial direction as an axially movable member. A drive element is used to apply a force to the axially movable member to bring it closer to the axially fixed member so as to engage the helical gear meshing pair. A separation drive element is used to apply a force to the axially movable member to cause it to move away from the axially fixed member, so as to separate the helical gear meshing pair. The force of the engagement drive element is configured to overcome the force of the disengagement drive element.

2. The cable reel according to claim 1, characterized in that, The engagement drive element and the disengagement drive element are configured as follows: During the winding process, the force applied by the engagement drive element overcomes the force applied by the disengagement drive element, causing the helical gear meshing pair to engage, so that the power of the motor (2) can be transmitted to the winding reel (1) to wind up the rope. During the unwinding process, the force applied by the engagement drive element is removed or reduced, and the force applied by the disengagement drive element drives the helical tooth meshing pair to disengage, allowing the winding reel (1) to rotate freely.

3. The reel according to claim 1 or 2, characterized in that, The separation drive element is an elastic element (6).

4. The reel according to claim 3, characterized in that, The elastic element (6) is a spring, one end of which acts on the axially movable member and the other end of which acts on the axially fixed member.

5. The reel according to claim 1 or 2, characterized in that, The engagement drive element is an electromagnetic drive unit, which generates a force that brings the axially movable member closer to the axially fixed member when energized.

6. The reel according to claim 5, characterized in that, The electromagnetic drive unit includes a fixed electromagnet (7a) and a corresponding magnetic conductive element (7b) that can be attracted by it.

7. The reel according to claim 6, characterized in that, The electromagnet (7a) is fixedly disposed relative to the axial fixing member, and the magnetic conductive member (7b) is fixedly disposed relative to the axial movable member.

8. The reel according to claim 1, characterized in that, When the active component (3) is an axially movable component, the active component (3) is coaxially and axially movablely connected to the power output end of the motor (2) through a circumferential limiting structure that can transmit torque; When the driven member (4) is an axially movable member, the driven member (4) is coaxially and axially movablely connected to the winding reel (1) through a circumferential limiting structure that can transmit torque.

9. The cable reel according to claim 1, characterized in that, The inclined tooth (5) has an inclined surface and a radially extending drive side.

10. A window cleaning robot base station, comprising a base station body, characterized in that: The base station body is equipped with a cable reel as described in any one of claims 1-9.

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