Universal wheel lifting layout structure of sweeper

Abstract

The utility model belongs to the technical field of cleaning equipment, and particularly relates to a sweeper universal wheel lifting layout structure which comprises a chassis, a universal wheel detection plate is fixed to the front side of the chassis, a laser detection module is arranged on the front side of the universal wheel detection plate, the rear side of the laser detection module is fixedly connected with the front side of the chassis, and the rear side of the laser detection module is fixedly connected with the rear side of the chassis. A universal wheel shaft sleeve is fixed to the lower side of the chassis, a universal wheel assembly is arranged at the lower end of the universal wheel shaft sleeve, a universal wheel shaft rod of the universal wheel assembly penetrates through the universal wheel shaft sleeve and extends to the upper end of the universal wheel shaft sleeve, and the universal wheel shaft sleeve is fixedly connected with the inner wall of the chassis through a screw. The universal wheels can float up and down in the running process, the machine can easily cross ridges and obstacles, the use scene is wider, and the product is more intelligent.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a universal wheel lifting layout structure for a sweeping machine. Background Art

[0002] With the development of modern technology, sweeping robots are widely used in household cleaning work. With the help of certain artificial intelligence, sweeping robots can automatically complete the cleaning of the floor in the room. Their main functions include sweeping, vacuuming, mopping, etc.

[0003] However, the existing sweeping machines still have the following technical problems when in use:

[0004] When cleaning a house, a sweeper often encounters some excessively high steps. Since the sweeper's universal wheels cannot be raised and lowered, these ground steps will affect the sweeper's climbing efficiency, resulting in reduced cleaning efficiency and affecting the user experience.

[0005] Therefore, a sweeper universal wheel lifting layout structure is proposed to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of the utility model is to provide a universal wheel lifting layout structure for a sweeping machine to solve the problems raised in the above background technology.

[0007] The cam is fixedly mounted on the chassis, wherein the front end of the chassis is provided with a universal wheel detection plate, the front end of the universal wheel detection plate is provided with a laser detection module, the rear end of the laser detection module is fixedly connected to the front end of the chassis, and the lower end of the chassis is provided with a universal wheel shaft sleeve. The universal wheel shaft rod of the universal wheel assembly passes through the universal wheel shaft sleeve and extends to the upper end, and the universal wheel shaft sleeve is fixedly connected to the inner wall of the chassis by screws. The outer end of the universal wheel shaft rod of the universal wheel assembly is sleeved with a first return spring, and a symmetrical fixed shaft is fixed inside the chassis, and a limited bracket is slidably provided on the outer side of the symmetrical fixed shaft, and a second return spring is sleeved on the upper end of the symmetrical fixed shaft, and the upper end of the universal shaft of the universal wheel assembly is fixedly connected to the lower side of the limited bracket;

[0008] A motor fixing seat is fixed inside the chassis, a first fixing cover is fixed to the left side of the motor fixing seat, a stepping motor is fixed inside the motor fixing seat, a universal wheel cam is fixed to the output end of the stepping motor, the universal wheel cam extends into the interior of the limit bracket, and the side wall of the universal wheel cam is slidably connected to the inner wall of the limit bracket;

[0009] A control panel is fixed on the upper side of the chassis.

[0010] Preferably, the laser detection module, the universal wheel detection plate and the control board are all fixedly connected to the chassis via a second fixing cover, and the second fixing cover is fixedly connected to the chassis via screws and a retaining spring.

[0011] Preferably, the lower end of the first return spring is fixedly connected to the upper side of the universal wheel assembly, and the upper end of the first return spring is fixedly connected to the inner wall of the universal wheel sleeve.

[0012] Preferably, the lower ends of the two second return springs are fixedly connected to the upper side of the limiting bracket, and the upper ends of the two second return springs are fixedly connected to the upper end of the fixed shaft.

[0013] Preferably, the laser detection module, the control board and the universal wheel detection board are all electrically connected to the stepper motor and the universal wheel assembly.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This application adopts a universal wheel lifting mechanism, which allows the universal wheel to float up and down during driving, allowing the machine to easily pass over bumps and obstacles, making the usage scenarios wider and the product more intelligent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the top view structure;

[0018] Figure 3 Schematic diagram of the exploded structure of the chassis internal structure.

[0019] In the figure: 1 chassis, 2 laser detection module, 3 control board, 4 universal wheel detection board, 5 universal wheel assembly, 6 universal wheel shaft sleeve, 7 first return spring, 8 screw, 9 limit bracket, 10 second fixing cover, 11 retaining spring, 12 fixing shaft, 13 second return spring, 14 universal wheel cam, 15 first fixing cover, 16 stepper motor, 17 motor fixing base. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0022] Example:

[0023] See also Figure 1-3 , the utility model provides a technical solution:

[0024] A sweeping robot universal wheel lifting layout structure includes a chassis 1, a universal wheel detection plate 4 is fixed to the front side of the chassis 1 to ensure that the universal wheel assembly is lowered to a specified position, the universal wheel detection plate 4 and the limit bracket 9 contain a detection and identification structure, a laser detection module 2 is provided on the front side of the universal wheel detection plate 4, and the laser detection module 2 is used to detect obstacles during the driving process of the sweeping robot to facilitate the driving position transfer of the sweeping robot, the rear side of the laser detection module 2 is fixedly connected to the front side of the chassis 1, a universal wheel shaft sleeve 6 is fixed to the lower side of the chassis 1, and a universal wheel assembly 5 is provided at the lower end of the universal wheel shaft sleeve 6, and the universal wheel shaft rod of the universal wheel assembly 5 passes through the universal wheel shaft sleeve 6 and extends Extending to the upper end, the universal wheel shaft sleeve 6 is fixedly connected to the inner wall of the chassis 1 by a screw 8, the outer sleeve of the universal wheel shaft rod of the universal wheel assembly 5 is provided with a first return spring 7, and a symmetrical fixed shaft 12 is fixed inside the chassis 1. The fixed shaft 12 plays a role in limiting and ensuring concentricity without deviation. The limit bracket 9 is continuously squeezed and released by the universal wheel cam 14, and can realize up and down reciprocating motion on the fixed shaft 12. The outer sides of the symmetrical fixed shafts 12 are jointly slidably provided with a limit bracket 9. The outer sides of the symmetrical fixed shafts 12 are located at the upper end of the limit bracket 9 and are sleeved with a second return spring 13. The upper end of the universal shaft of the universal wheel assembly 5 is fixedly connected to the lower side of the limit bracket 9;

[0025] A motor mounting base 17 is fixed inside the chassis 1, a first fixing cover 15 is fixed to the left side of the motor mounting base 17, a stepper motor 16 is fixed inside the motor mounting base 17, and the stepper motor 16 is installed, fixed and limited by the cooperation of the first fixing cover 15 and the motor mounting base 17. A universal wheel cam 14 is fixed to the output end of the stepper motor 16, and the universal wheel cam 14 extends to the interior of the limiting bracket 9, and the side wall of the universal wheel cam 14 is slidably connected to the inner wall of the limiting bracket 9;

[0026] A control panel 3 is fixed on the upper side of the chassis 1 , and the control panel 3 is used to control the overall working process of the sweeping robot.

[0027] The laser detection module 2 , the universal wheel detection board 4 and the control board 3 are all fixedly connected to the chassis 1 via a second fixing cover 10 , and the second fixing cover 10 is fixedly connected to the chassis 1 via screws 8 and a retaining spring 11 .

[0028] The lower end of the first return spring 7 is fixedly connected to the upper side of the universal wheel assembly 5 , and the upper end of the first return spring 7 is fixedly connected to the inner wall of the universal wheel shaft sleeve 6 .

[0029] The lower ends of the two second return springs 13 are fixedly connected to the upper side of the limiting bracket 9 , and the upper ends of the two second return springs 13 are fixedly connected to the upper end of the fixed shaft 12 .

[0030] The laser detection module 2 , the control board 3 , and the universal wheel detection board 4 are all electrically connected to the stepper motor 16 and the universal wheel assembly 5 .

[0031] Working principle:

[0032] When the laser detection module 2 recognizes that the height of the ground step is ≥15mm, the stepper motor 16 receives the signal and reverses to drive the universal wheel cam 14 to rotate so that it presses the limit bracket 9. The limit bracket 9 is affected by the downward pressure and squeezes the universal wheel assembly 5 to drop, thereby causing the chassis 1 of the machine to be lifted and easily cross the obstacle; when the machine successfully crosses the obstacle, the universal wheel assembly 5 is affected by the pressure of the machine on the ground. At this time, the universal wheel assembly 5 rises freely and returns to the default state of the machine. The stepper motor 16 rotates forward to drive the universal wheel cam 14 to rotate, so that it disengages from the pressing surface of the limit bracket 9.

[0033] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sweeping machine universal wheel lifting layout structure, comprising a chassis (1), characterized in that: A universal wheel detection plate (4) is fixed to the front side of the chassis (1), a laser detection module (2) is provided on the front side of the universal wheel detection plate (4), the rear side of the laser detection module (2) is fixedly connected to the front side of the chassis (1), a universal wheel shaft sleeve (6) is fixed to the lower side of the chassis (1), a universal wheel assembly (5) is provided at the lower end of the universal wheel shaft sleeve (6), a universal wheel shaft rod of the universal wheel assembly (5) passes through the universal wheel shaft sleeve (6) and extends to the upper end, and the universal wheel shaft sleeve (6) is connected to the universal wheel shaft sleeve (6) by screws (8). The inner wall of the chassis (1) is fixedly connected, the outer portion of the universal wheel shaft of the universal wheel assembly (5) is sleeved with a first return spring (7), the inner portion of the chassis (1) is fixed with a symmetrical fixed shaft (12), the outer portions of the symmetrical fixed shafts (12) are slidably provided with a limit bracket (9), the outer portions of the symmetrical fixed shafts (12) are sleeved with a second return spring (13) located at the upper end of the limit bracket (9), and the upper end of the universal shaft of the universal wheel assembly (5) is fixedly connected to the lower side of the limit bracket (9); A motor fixing seat (17) is fixed inside the chassis (1), a first fixing cover (15) is fixed on the left side of the motor fixing seat (17), a stepping motor (16) is fixed inside the motor fixing seat (17), a universal wheel cam (14) is fixed to the output end of the stepping motor (16), the universal wheel cam (14) extends to the inside of the limit bracket (9), and the side wall of the universal wheel cam (14) is slidably connected to the inner wall of the limit bracket (9); A control panel (3) is fixed on the upper side of the chassis (1).

2. The sweeper universal wheel lifting layout structure according to claim 1, characterized in that: The laser detection module (2), the universal wheel detection plate (4) and the control plate (3) are all fixedly connected to the chassis (1) via a second fixing cover (10), and the second fixing cover (10) is fixedly connected to the chassis (1) via screws (8) and a retaining spring (11).

3. The universal wheel lifting layout structure for a sweeping machine according to claim 1, characterized in that: The lower end of the first return spring (7) is fixedly connected to the upper side of the universal wheel assembly (5), and the upper end of the first return spring (7) is fixedly connected to the inner wall of the universal wheel shaft sleeve (6).

4. The universal wheel lifting layout structure for a sweeping machine according to claim 1, characterized in that: The lower ends of the two second return springs (13) are fixedly connected to the upper side of the limiting bracket (9), and the upper ends of the two second return springs (13) are fixedly connected to the upper end of the fixed shaft (12).

5. The universal wheel lifting layout structure for a sweeping machine according to claim 1, characterized in that: The laser detection module (2), the control board (3) and the universal wheel detection board (4) are all electrically connected to the stepping motor (16) and the universal wheel assembly (5).

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