CN209750927U - Steering device and sweeper - Google Patents

Abstract

The utility model relates to a cleaning device field discloses a turn to device and machine of sweeping floor. The steering device comprises a driving part, a first transmission part, a second transmission part and a steering wheel, wherein two ends of the first transmission part are respectively connected with the driving part and the second transmission part, two ends of the second transmission part are respectively connected with the first transmission part and the steering wheel, the first transmission part comprises a steering shaft, a first bevel gear and a second bevel gear, the second transmission part comprises a fixture block and an elastic component, the first bevel gear is fixedly connected with the driving part, the second bevel gear is fixedly sleeved on the steering shaft, the first bevel gear is meshed with the second bevel gear, the fixture block is clamped on the steering shaft, two ends of the elastic component respectively support against the fixture block and the steering wheel, and when the steering wheel is stuck and stops rotating, the fixture block is separated from the steering shaft; the sweeper comprises the steering device. The steering device can separate the steering wheel from the driving part when the steering wheel is blocked and stops rotating, so that the driving part of the sweeper is prevented from being damaged, and the safety in use is improved.

Description

Steering device and sweeper

Technical Field

The utility model relates to a cleaning equipment field especially relates to a turn to device and machine of sweeping floor.

Background

With the continuous improvement of the living standard of people, more and more families choose to use the sweeper to replace manual cleaning. Such machines typically have the capability of automatic travel and automatic cleaning of the waste. The lower part of the machine body is usually provided with a dust suction opening, and a continuously rotating dusting brush is arranged in front of the dust suction opening and is used for raising dust on the ground and then sucking the dust into a dust box through the dust suction opening. While dust is sucked, sundries such as hair and the like are often sucked, and the sundries are easy to be wound on wheels on the steering device which is not far away from the dust suction opening in the process of being sucked. The wheel may be locked and unable to rotate due to the winding of a large amount of sundries, which not only causes the sweeper not to run normally, but also may damage the sweeper.

SUMMERY OF THE UTILITY MODEL

in order to overcome the defects of the prior art, the utility model provides a turn to device and sweeper, which can prevent the sweeper from being damaged due to the dead wheel.

The utility model provides a technical scheme that its technical problem adopted is:

The steering device comprises a driving part, a first transmission part, a second transmission part and a steering wheel, wherein two ends of the first transmission part are respectively connected with the driving part and the second transmission part, two ends of the second transmission part are respectively connected with the first transmission part and the steering wheel, the first transmission part comprises a steering shaft, a first bevel gear and a second bevel gear, the second transmission part comprises a clamping block and an elastic part, the first bevel gear is fixedly connected with the driving part, the second bevel gear is fixedly sleeved on the steering shaft, the first bevel gear is meshed with the second bevel gear, the clamping block is clamped on the steering shaft, two ends of the elastic part respectively abut against the clamping block and the steering wheel, and when the steering wheel is locked and stops rotating, the clamping block is separated from the steering shaft.

As an improvement of the technical scheme, the end face of the clamping block is provided with a protrusion, the end face of the steering shaft is provided with a pit, and the protrusion is clamped into the pit.

as a further improvement of the above technical solution, the elastic member is a spring.

As a further improvement of the above technical scheme, a first groove is arranged on the end face of the fixture block, a second groove is arranged on the end face of the steering wheel, and two ends of the spring are respectively clamped into the first groove and the second groove.

As a further improvement of the technical scheme, a convex block is arranged on the circumferential surface of the steering shaft, a concave part is arranged on the circumferential surface of the second bevel gear hole wall, and the convex block is clamped with the concave part.

As a further improvement of the above technical solution, the steering device further includes a transmission housing, and the transmission housing covers the first transmission part and the second transmission part.

As a further improvement of the technical scheme, the transmission part shell comprises an upper shell and a lower shell, and the upper shell is clamped with the lower shell.

As a further improvement of the technical scheme, the steering wheel is provided with an anti-skid groove.

Still provide a sweeper, including aforementioned turning to the device.

The utility model has the advantages that: the steering device can separate the steering wheel from the driving part when the steering wheel is blocked and stops rotating, so that the driving part of the sweeper is prevented from being damaged, and the safety in use is improved.

Drawings

The invention will be further described with reference to the following figures and examples:

Fig. 1 is a schematic perspective view of a steering device according to an embodiment of the present invention;

Fig. 2 is a schematic perspective view of a sweeper according to an embodiment of the present invention;

fig. 3 is a structural exploded view of a steering device according to an embodiment of the present invention;

Fig. 4 is a structural exploded view of a steering device according to an embodiment of the present invention.

Detailed Description

The conception, specific structure and technical effects of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, so as to fully understand the objects, aspects and effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Furthermore, the description of the upper, lower, left, right, front, rear, etc. used in the present invention is only relative to the mutual position relationship of the components of the present invention in the drawings.

Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any combination of one or more of the associated listed items.

Referring to fig. 1-2, a perspective view of a steering device and a floor sweeper according to an embodiment of the present invention are shown. The sweeper comprises a shell 1, wherein the shell 1 is one side of the sweeper, which is arranged on the ground during working. The chassis 1 is provided with a recess, a steering device 2 of the sweeper is fixed in the recess, and the steering device 2 provides a steering function for the sweeper. The chassis 1 is also fixed with road wheels 3. The sweeper always keeps rotating when moving forwards or backwards.

The steering device 2 comprises a driving motor 21, the driving motor 21 is connected with a transmission part, the transmission part is covered with a transmission part shell 28, and two sides of the transmission part are connected with a steering wheel 27. The driving motor 21 provides the steering device 2 with operating power, and transmits the power to the steering wheel 27 through the transmission member to rotate the steering wheel 27. The transmission housing 28 protects the transmission components located therein.

Referring to fig. 3 to 4, two views of a structural split view of a steering device according to an embodiment of the present invention are shown. The steering device 2 includes a first transmission portion, a second transmission portion, and a steering wheel 27. The steering wheel 27 comprises a hub 271 and a tire 272, the tire 272 is sleeved outside the hub 271, and the circumferential surface of the tire 272 is provided with an anti-slip groove to increase the friction between the steering wheel 27 and the ground when rotating, so as to prevent slipping.

The first transmission part includes a first bevel gear 22, a second bevel gear 23 and a steering shaft 24. The driving motor 21 has a protruding block 211 at the bottom thereof to be inserted into a hole 221 of the first bevel gear 22. The second bevel gear 23 is fitted over the steering shaft 24, a projection 241 is provided on the circumferential surface of the steering shaft 24, a recess 231 is provided on the circumferential surface of the hole wall of the second bevel gear 23, and the projection 241 is engaged with the recess 231.

The second transmission part comprises a latch 25 and a spring 26. The first end face of the latch 25 has a projection 251, the end face of the steering shaft 24 has a recess 242, and the projection 251 is engaged in the recess 242. The second end face of the fixture block 25 is provided with a first groove 252, the end face of the hub 271 is provided with a second groove 2711, and two ends of the spring 26 are respectively clamped in the first groove 252 and the second groove 2711, so that two ends of the spring 26 respectively abut against the fixture block 25 and the hub 271.

The transmission part shell 28 is covered on the first transmission part and the second transmission part, the transmission part shell 28 comprises an upper shell 281 and a lower shell 282, a raised limiting column 2811 is arranged in the upper shell 281, a hole site 2821 matched with the limiting column 2811 is arranged in the lower shell 282, and the limiting column 2811 is clamped in the hole site 2821, so that clamping between the upper shell 281 and the lower shell 282 is realized.

When the sweeper runs normally, the working process of the steering device 2 is as follows: the driving motor 21 is started and drives the first bevel gear 22 to rotate, and the first bevel gear 22 is meshed with the second bevel gear 23, so as to drive the second bevel gear 23 to rotate along with the first bevel gear 22. Since the second bevel gear 23 is fixed to the circumferential surface of the steering shaft 24, the steering shaft 24 will rotate synchronously with the second bevel gear 23. Since the latch 25 is engaged with the end surface of the steering shaft 24, the latch 25 will also rotate synchronously with the steering shaft 24, and at the same time, the spring 26 and the steering wheel 27 will also rotate synchronously with the steering shaft 24.

When the steering wheel 27 is caught by the sundries, the turning speed of the steering wheel 27 is greatly reduced and even stopped, so that the turning speed of the steering shaft 24 is reduced, and the turning speed of the second bevel gear 23 is reduced because the second bevel gear 23 is fixed on the steering shaft 24. The first bevel gear 22 is driven by the driving motor 21 to rotate at the original speed, so that the first bevel gear 22 exerts a force on the second bevel gear 23, and the force is transmitted to the steering shaft 24, so that the steering shaft 24 has a component force in the axial direction. This axial force component pushes the dog 25 out of the recess 242 to disengage it from the steering shaft 24. After the separation, the latch 25, the spring 26, and the steering wheel 27 are all stopped. The first bevel gear 22, the second bevel gear 23 and the steering shaft 24 will continue to operate under the drive of the drive motor 21. In summary, when the steering wheel 27 is jammed, the driving motor 21 and the steering wheel 27 are separated from each other, and no interference occurs therebetween. Therefore, even if the steering wheel 27 is stuck, the drive motor 21 is not damaged.

In addition, when the steering wheel 27 is just jammed, the latch 25 is not ejected or is not ejected out of the concave 242 completely, that is, the latch 25 can still rotate along with the rotation of the steering shaft 24, but the steering wheel 27 cannot rotate, so that the end of the spring 26 connected with the latch 25 is in a rotating state, and the end connected with the steering wheel 27 is in a stationary state. Therefore, the spring 26 generates a large friction at the connection between the latch 25 and the steering wheel 27, and makes a sound. When the user hears the sound, the user can know that the steering wheel 27 is clamped, which is beneficial to removing the sundries clamped in the steering wheel 27 in time and leading the sweeper to quickly recover to the normal working state.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. a steering device comprises a driving part, a first transmission part, a second transmission part and a steering wheel, it is characterized in that two ends of the first transmission part are respectively connected with the driving part and the second transmission part, the two ends of the second transmission part are respectively connected with the first transmission part and the steering wheel, the first transmission part comprises a steering shaft, a first bevel gear and a second bevel gear, the second transmission part comprises a clamping block and an elastic component, the first bevel gear is fixedly connected with the driving part, the second bevel gear is fixedly sleeved on the steering shaft, the first bevel gear is meshed with the second bevel gear, the fixture block is clamped on the steering shaft, two ends of the elastic component respectively abut against the fixture block and the steering wheel, and when the steering wheel is locked and stops rotating, the fixture block is separated from the steering shaft.

2. The steering device according to claim 1, wherein a protrusion is arranged on the end surface of the clamping block, a concave pit is arranged on the end surface of the steering shaft, and the protrusion is clamped in the concave pit.

3. The steering device according to claim 2, wherein the elastic member is a spring.

4. the steering device according to claim 3, wherein a first groove is formed in the end face of the clamping block, a second groove is formed in the end face of the steering wheel, and two ends of the spring are clamped in the first groove and the second groove respectively.

5. The steering device according to claim 4, wherein a projection is provided on a circumferential surface of the steering shaft, and a recess is provided on a circumferential surface of the second bevel gear hole wall, and the projection is engaged with the recess.

6. The steering device of claim 5, further comprising a transmission housing that is housed outside the first transmission and the second transmission.

7. The steering device according to claim 6, wherein the transmission housing includes an upper case and a lower case, and the upper case is engaged with the lower case.

8. The steering device according to claim 7, wherein the steering wheel is provided with an anti-skid groove.

9. A sweeper, characterized in that it comprises a steering device according to any one of claims 1 to 8.