Plate brush lifting mechanism

Abstract

The utility model relates to the technical field of sweepers, in particular to a disc brush lifting mechanism which is used for driving a disc brush to ascend, descend and rotate. The outer rotor motor, the transmission screw rod and the lifting column are specifically arranged, the outer rotor motor is adopted to directly drive the transmission screw rod to rotate, in addition, the transmission screw rod is in threaded connection with the lifting column, rotation of the transmission screw rod is converted into lifting of the lifting column, and the transmission efficiency is high; in addition, the overall size of the lifting structure can be reduced, and layout of the sweeper is met; a limiting assembly is further arranged and used for limiting ascending and descending of the lifting column, and when the lifting column ascends and descends to the top end or the bottom end, the lifting column synchronously rotates along with the transmission screw so as to drive the disc brush to rotate for cleaning.

Description

Technical Field

[0001] The utility model relates to the technical field of sweeping machines, in particular to a disc brush lifting mechanism. Background Art

[0002] A sweeper is a mechanically driven cleaning tool that can mechanize cleaning and garbage collection and improve cleaning efficiency. Therefore, a sweeper is widely used in cleaning various places.

[0003] A sweeper is equipped with a disc brush for cleaning. The disc brush is often equipped with a lifting mechanism. When not in operation, the lifting mechanism drives the disc brush to rise and be recovered to increase its service life. The existing lifting mechanism is mainly realized by a motor with gears, which has the problems of large size and high manufacturing cost. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a disc brush lifting mechanism.

[0005] The utility model adopts the following technical solutions:

[0006] A disc brush lifting mechanism comprises an outer rotor motor, a transmission screw, and a lifting column; the upper end of the transmission screw is drivingly connected to the rotating end of the outer rotor motor, and the lower end of the transmission screw is threadedly connected to the lifting column; the outer rotor motor drives the transmission screw to rotate to drive the lifting column to be lifted and lowered; a limit assembly is provided on the outer side of the transmission screw and the lifting column, and the limit assembly is used to limit the lifting height of the lifting column. When the lifting column is lifted to the top or bottom end, the lifting column and the transmission screw rotate synchronously.

[0007] Preferably, a connecting groove is provided at the upper end of the lifting column, and a first thread is provided on the inner wall of the connecting groove; a second thread is provided on the outer wall of the transmission screw, and the lower end of the transmission screw is inserted into the connecting groove, and the first thread is meshed with the second thread to realize the transmission of the transmission screw and the lifting column.

[0008] Preferably, a connecting seat is provided between the outer rotor motor and the transmission screw, the upper end surface of the connecting seat is fixedly connected to the rotating end of the outer rotor motor, and the lower end of the connecting seat is fixedly connected to the upper end of the transmission screw; the outer rotor motor is used to drive the connecting seat and the transmission screw to rotate synchronously.

[0009] Preferably, the connecting seat includes an integrally formed connecting shaft, a first connecting plate, and a second connecting plate; the first connecting plate is arranged at the upper end of the connecting shaft and is assembled and connected to the outer rotor motor, and the second connecting plate is arranged at the lower end of the connecting shaft and is fixedly connected to the transmission screw.

[0010] Preferably, a connecting portion is horizontally extended on the upper end surface of the driving screw toward the direction of the limiting assembly, and the upper end surface of the connecting portion is spliced ​​with the lower end surface of the second connecting piece.

[0011] Preferably, a clearance hole is vertically opened in the center of the connecting seat, and an assembly shaft is protruding from the rotating end of the outer rotor motor; the assembly shaft extends into the clearance hole.

[0012] Preferably, the limiting assembly is a limiting seat sleeved on the outside of the lifting column, and an abutment block is horizontally extended from the upper end of the lifting column toward the direction of the limiting assembly; when the lifting column descends to a certain height, the abutment block interferes with the limiting seat to achieve limiting.

[0013] Preferably, the limiting seat comprises a cylindrical receiving portion and a limiting ring provided at the lower end of the inner side of the receiving portion; a cavity is formed inside the receiving portion, and the upper portion of the lifting column is slidably connected in the cavity.

[0014] Preferably, the abutment block is annular, and the outer wall of the abutment block abuts against the inner wall of the receiving portion.

[0015] Preferably, a plug hole is provided on the lower end surface of the lifting column; the plug hole is used to connect with the disc brush.

[0016] The beneficial effects of the utility model are:

[0017] The disc brush lifting mechanism involved in the utility model is used for driving the disc brush to lift and rotate; it is specifically provided with an outer rotor motor, a transmission screw and a lifting column, the outer rotor motor is used to directly drive the transmission screw to rotate, and the transmission screw and the lifting column are connected by threads, so that the rotation of the transmission screw is converted into the lifting of the lifting column, and the transmission efficiency is high; in addition, the overall volume of the lifting structure can be reduced to meet the layout of the sweeper; a limit position component is also provided to limit the lifting of the lifting column, and when the lifting column is lifted to the top or the bottom, the lifting column rotates synchronously with the transmission screw to drive the disc brush to rotate for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the disc brush lifting mechanism of the utility model;

[0019] Figure 2 for Figure 1 A half-section schematic diagram of the disc brush lifting mechanism;

[0020] Figure 3 for Figure 1 An exploded schematic diagram of the disc brush lifting mechanism;

[0021] Figure 4 for Figure 1 An exploded diagram of the disc brush lifting mechanism from another perspective;

[0022] Figure 5 This is a reference diagram of the first use state of the disc brush lifting mechanism of the utility model;

[0023] Figure 6 This is a reference diagram of the second use state of the disc brush lifting mechanism of the present invention.

[0024] Numbers in the figure:

[0025] 1-external rotor motor; 11-assembly shaft;

[0026] 2-transmission screw; 21-second thread; 22-connecting portion;

[0027] 3-lifting column; 31-connecting groove; 32-first thread; 33-abutment block; 34-insertion hole;

[0028] 4-connecting seat; 41-connecting shaft; 42-first connecting piece; 43-second connecting piece; 44-avoiding hole;

[0029] 5-limiting assembly; 51-limiting seat; 52-receiving part; 53-limiting ring; 54-cavity. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] like Figures 1 to 4 As shown, the disc brush lifting mechanism of the present invention is used to connect the disc brush of the sweeper and drive the disc brush to lift and rotate. Specifically, it includes an outer rotor motor 1, a transmission screw 2, and a lifting column 3; the upper end of the transmission screw 2 is drivingly connected to the rotating end of the outer rotor motor 1, and the lower end of the transmission screw 2 is connected to the lifting column 3 by a thread; when in use, the outer rotor motor 1 drives the transmission screw 2 to rotate, thereby driving the lifting column 3 to lift and lower to adjust the height of the disc brush. Through the above-mentioned transmission structure, there is no need to use gears for transmission, thereby reducing the volume of the lifting structure. In addition, since the present invention adopts an outer rotor motor 1, the rotating end is specifically an external rotor, and the transmission screw 2 can be directly connected to the external rotor without the need for a coupling or the like. A limit assembly 5 is provided on the outside of the transmission screw 2 and the lifting column 3, and the limit assembly 5 is used to limit the lifting height of the lifting column 3. As shown Figure 5 As shown, at this time, the lifting column 3 rises to the top, and the top of the lifting column 3 abuts against the driving screw 2. The lifting column 3 is limited and cannot continue to rise. Under the drive of the outer rotor motor 1, the lifting column 3 rotates with the driving screw 2, thereby driving the disc brush to rotate for cleaning, which can be used to clean carpets with a certain thickness. Figure 6 As shown, at this time, the lifting column 3 drops to the bottom, and the lifting column 3 abuts against the limit assembly 5 and cannot continue to drop. Driven by the outer rotor motor 1, the lifting column 3 rotates along with the transmission screw 2, thereby driving the disc brush to rotate for cleaning. At this time, the disc brush can contact the ground and clean.

[0034] A further improvement to the above scheme is that a connecting groove 31 is provided at the upper end of the lifting column 3, and a first thread 32 is provided on the inner wall of the connecting groove 31, and a second thread 21 is provided on the outer wall of the transmission screw 2 correspondingly; the lower end of the transmission screw 2 is inserted into the connecting groove 31, and the first thread 32 is meshed with the second thread 21 to realize the transmission of the transmission screw 2 and the lifting column 3.

[0035] A further improvement to the above scheme is that a connecting seat 4 is provided between the outer rotor motor 1 and the transmission screw 2, the upper end surface of the connecting seat 4 is fixedly connected to the rotating end of the outer rotor motor 1, and the lower end of the connecting seat 4 is fixedly connected to the upper end of the transmission screw 2; the outer rotor motor 1 drives the connecting seat 4 and the transmission screw 2 to rotate synchronously; the connecting seat 4 is arranged between the outer rotor motor 1 and the transmission screw 2 to expand the distance between the two parts to provide assembly space to meet the structural connection of the sweeper.

[0036] Specifically, the connection seat 4 includes an integrally formed connection shaft 41, a first connection piece 42 and a second connection piece 43, the first connection piece 42 is arranged at the upper end of the connection shaft 41 and is assembled and connected with the outer rotor motor 1, and the second connection piece 43 is arranged at the lower end of the connection shaft 41 and is fixedly connected with the transmission screw 2; the first connection piece 42 and the second connection piece 43 are used for structural connection, and the connection shaft 41 is cylindrical and has a small diameter, which reduces the occupied space and does not affect the rotation of the transmission screw 2. In addition, a connection portion 22 is extended outward from the upper end surface of the transmission screw 2, and the upper end surface of the connection portion 22 is spliced ​​with the lower end surface of the second connection piece 43, so as to improve the connection stability between the transmission screw 2 and the connection seat 4.

[0037] Specifically, a clearance hole 44 is vertically opened in the center of the connecting seat 4, and an assembly shaft 11 is protruding from the rotating end of the outer rotor motor 1. The assembly shaft 11 is arranged in the clearance hole 44. The assembly shaft 11 is arranged in the center of the outer rotor motor 1, and the clearance hole 44 is used to avoid the assembly shaft 11.

[0038] A further improvement to the above scheme is that the limit assembly 5 is specifically a limit seat 51 sleeved on the outside of the lifting column 3, and the upper end of the lifting column 3 is horizontally extended with an abutment block 33 in the direction of the limit assembly 5. When the lifting column 3 descends to a certain height, the abutment block 33 and the limit seat 51 will interfere with each other to limit the descending height of the lifting column 3, and at the same time prevent the lifting column 3 from falling out and affecting the use of the disc brush. Specifically, the limit seat 51 includes a cylindrical receiving portion 52 and a limit ring 53 arranged at the lower end of the inner side of the receiving portion 52. The receiving portion 52 is provided with a cavity 54, and the upper structure of the lifting column 3 is always slidably connected in the cavity 54. At the same time, the abutment block 33 is annular, and the outer wall of the abutment block 33 abuts against the inner wall of the receiving portion 52, thereby increasing a certain friction force and ensuring the stability of lifting.

[0039] A further improvement to the above scheme is that a plug hole 34 is provided on the lower end surface of the lifting column 3, and the plug hole 34 is used to connect with the disc brush; specifically, the cross-sectional shape of the plug hole 34 is a polygon, which is compatible with the connecting end of the disc brush to facilitate positioning and installation of the disc brush.

[0040] Compared with the prior art, the disc brush lifting mechanism involved in the utility model is used to drive the disc brush to lift and lower; it is specifically provided with an outer rotor motor 1, a transmission screw 2 and a lifting column 3. The outer rotor motor 1 is used to directly drive the transmission screw 2 to rotate. In addition, the transmission screw 2 and the lifting column 3 are connected by threads, and the rotation of the transmission screw 2 is converted into the lifting of the lifting column 3, and the transmission efficiency is high; in addition, the overall volume of the lifting structure can be reduced to meet the layout of the sweeper.

[0041] The above only expresses the preferred technical solution of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A disc brush lifting mechanism, characterized in that: It includes an outer rotor motor, a transmission screw, and a lifting column; the upper end of the transmission screw is drivingly connected to the rotating end of the outer rotor motor, and the lower end of the transmission screw is threadedly connected to the lifting column; the outer rotor motor drives the transmission screw to rotate to drive the lifting column to be lifted or lowered; a limit assembly is provided on the outer side of the transmission screw and the lifting column, and the limit assembly is used to limit the lifting height of the lifting column. When the lifting column is lifted to the top or bottom, the lifting column and the transmission screw rotate synchronously.

2. The disc brush lifting mechanism according to claim 1, characterized in that: A connecting groove is provided at the upper end of the lifting column, and a first thread is provided on the inner wall of the connecting groove; a second thread is provided on the outer wall of the transmission screw, and the lower end of the transmission screw is inserted into the connecting groove, and the first thread is meshed with the second thread to realize the transmission of the transmission screw and the lifting column.

3. The disc brush lifting mechanism according to claim 1, characterized in that: A connecting seat is provided between the outer rotor motor and the transmission screw, the upper end surface of the connecting seat is fixedly connected to the rotating end of the outer rotor motor, and the lower end of the connecting seat is fixedly connected to the upper end of the transmission screw; the outer rotor motor is used to drive the connecting seat and the transmission screw to rotate synchronously.

4. The disc brush lifting mechanism according to claim 3, characterized in that: The connecting seat includes an integrally formed connecting shaft, a first connecting plate, and a second connecting plate; the first connecting plate is arranged at the upper end of the connecting shaft and is assembled and connected to the outer rotor motor, and the second connecting plate is arranged at the lower end of the connecting shaft and is fixedly connected to the transmission screw.

5. The disc brush lifting mechanism according to claim 4, characterized in that: A connecting portion is horizontally extended from the upper end surface of the transmission screw toward the direction of the limiting assembly, and the upper end surface of the connecting portion is spliced ​​with the lower end surface of the second connecting piece.

6. The disc brush lifting mechanism according to claim 3, characterized in that: A clearance hole is vertically opened in the center of the connecting seat, and an assembly shaft is protruded from the rotating end of the outer rotor motor; the assembly shaft extends into the clearance hole.

7. The disc brush lifting mechanism according to claim 1, characterized in that: The limiting assembly is a limiting seat sleeved on the outside of the lifting column, and an abutment block is horizontally extended from the upper end of the lifting column toward the direction of the limiting assembly; when the lifting column descends to a certain height, the abutment block interferes with the limiting seat to achieve limiting.

8. The disc brush lifting mechanism according to claim 7, characterized in that: The limiting seat comprises a cylindrical receiving portion and a limiting ring arranged at the lower end of the inner side of the receiving portion; a cavity is formed inside the receiving portion, and the upper part of the lifting column is slidably connected in the cavity.

9. The disc brush lifting mechanism according to claim 8, characterized in that: The abutment block is annular, and the outer wall of the abutment block abuts against the inner wall of the receiving portion.

10. The disc brush lifting mechanism according to claim 1, characterized in that: The lower end surface of the lifting column is provided with a plug hole; the plug hole is used to connect with the disc brush.

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