CN220363173U - Caster and cleaning device - Google Patents

Abstract

The utility model relates to the technical field of casters, in particular to a caster and a cleaning device. The truckle includes truckle support, bearing, shaft subassembly, gyro wheel and protection strip, and the truckle support has two arm boards, and the gyro wheel passes through the bearing rotation and installs on the shaft subassembly, and shaft subassembly fixed mounting is on two arm boards, and the protection strip includes first board and second board, and first board sets up in the outside of bearing. The first board is connected with a second board along the both ends of its length direction all being the contained angle, and the second board extends along the axial of the wheel hub of gyro wheel towards wheel hub inside and sets up. When the hair foreign matter enters the inner ring of the roller, the hair foreign matter can be wound on the protective strip, so that the protective strip has a good blocking effect, abnormal sound and dead rotation caused by the hair foreign matter entering the bearing are avoided, and the protection of the bearing is improved. In addition, the hair foreign matter wound on the protective strip is more convenient to clean, so that the cleaning difficulty is reduced, and the cleaning efficiency is improved.

Description

Caster and cleaning device

Technical Field

The utility model relates to the technical field of casters, in particular to a caster and a cleaning device.

Background

The castor is generally divided into a fixed wheel and a universal wheel, and the fixed castor has no rotating structure and can not rotate. The universal wheel can rotate 360 degrees, and the travelling direction of the castor can be flexibly adjusted. Casters are widely used in transportation vehicles, carts, luggage cases, movable chairs, etc. because of their flexibility and convenience.

When the cleaning device relies on the truckle to walk on ground and wash ground, subaerial hair foreign matter rolls into on the bearing on the truckle along with the rotation of truckle easily, along with the increase of hair foreign matter, the truckle can take place high frequency abnormal sound, appears the condition of blocking not changeing even, seriously influences the normal walking function of truckle. Moreover, the cleaning of hair foreign bodies is difficult, time-consuming and labor-consuming.

Disclosure of Invention

The utility model aims to provide a trundle and a cleaning device, which are used for solving the problems of abnormal sound, dead locking, non-rotation and the like caused by hair rolling in a bearing of the trundle in the prior art and difficult cleaning.

The technical scheme adopted by the utility model is as follows:

the truckle, including truckle support, bearing, shaft subassembly and gyro wheel, the truckle support has two armplates, the gyro wheel passes through the bearing rotate install in on the shaft subassembly, shaft subassembly fixed mounting is two on the armplate, the truckle still includes the protection strip, the protection strip includes:

a first plate disposed outside the bearing;

the second board, first board is the contained angle along its length direction's both ends and is connected with one the second board, the second board is followed the axial orientation of the wheel hub of gyro wheel the inside extension setting of wheel hub.

Preferably, the protection strip further comprises a third plate, and the end part, far away from the first plate, of the second plate is connected with the third plate in an included angle, so that the second plate and the third plate enclose a winding groove with an opening facing outwards.

Preferably, the third plate includes an extension portion and a stop portion, the extension portion is parallel to the first plate, and two ends of the extension portion are respectively connected with the stop portion and the second plate on the same side, so that the guard bar is in a double-hook structure.

Preferably, the stop portion is connected to the extension portion in an outward inclined manner, so that the outer edge of the outer side surface of the stop portion approaches or abuts against the inner surface of the hub.

Preferably, corners of the stop part far away from the extension part are all provided with round corner structures.

Preferably, the first plate, the two second plates and the two third plates are integrally formed by bending.

As a preferable scheme, the first plate is provided with a mounting hole, the first plate is sleeved on the wheel shaft assembly through the mounting hole, and the first plate is clung to the outer side of the corresponding arm plate.

Preferably, the width of the guard bar is 19 mm-21 mm.

Preferably, the caster has two guard bars, and the first plates of the two guard bars are respectively disposed at two outer sides of the bearing in the axial direction.

The cleaning device comprises the caster.

The beneficial effects of the utility model are as follows:

when the caster wheel provided by the utility model walks, hair foreign matters on the ground are wound on the two second plates of the protective strip after being wound into the roller wheel, so that the protective strip has a good blocking effect, abnormal sound and dead locking caused by the hair foreign matters entering the bearing are avoided, and the protection of the bearing is improved. In addition, the hair foreign matter wound on the protective strip is more convenient to clean, so that the cleaning difficulty is reduced, and the cleaning efficiency is improved.

The cleaning device provided by the utility model comprises the trundle, and external hair foreign matters are prevented from entering the bearing through the protective strip, so that abnormal sound and locking of the trundle are avoided. In addition, the hair foreign matter wound on the protective strip is more convenient to clean, so that the cleaning difficulty is reduced, and the cleaning efficiency is improved.

Drawings

FIG. 1 is an end view of a caster provided by an embodiment of the present utility model;

FIG. 2 is a schematic view of a caster according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a caster mounting guard bar according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of a guard bar according to an embodiment of the present utility model.

The parts in the figures are named and numbered as follows:

1. a caster bracket; 11. an arm plate; 2. a bearing; 3. an axle assembly; 4. a roller; 41. a hub; 410. an inner ring; 411. an inner angle bevel; 42. a tire;

5. a guard bar; 50. a hair winding groove; 51. a first plate; 511. a mounting hole; 52. a second plate; 53. a third plate; 531. an extension; 532. a stop portion; 5321. and (5) a round corner structure.

Detailed Description

In order to make the technical problems solved, the technical scheme adopted and the technical effects achieved by the utility model more clear, the technical scheme of the utility model is further described below by a specific embodiment in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the drawings related to the present utility model are shown.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

The embodiment provides a cleaning device, which comprises a vehicle body and casters, wherein the vehicle body has a plurality of cleaning functions such as cleaning, dust collection and the like. The vehicle body realizes multidirectional walking through the casters arranged at the bottom of the vehicle body so as to clean the ground of each area to be cleaned in public places. Of course, the cleaning device may also have other cleaning functions, which are not particularly limited herein.

As shown in fig. 1 and 2, the caster comprises a caster frame 1, a bearing 2, an axle assembly 3 and a roller 4, wherein the caster frame 1 is provided with two arm plates 11, the roller 4 is rotatably mounted on the axle assembly 3 through the bearing 2, and the axle assembly 3 is fixedly mounted on the two arm plates 11. Specifically, the bottom of the vehicle body of the cleaning device is provided with a caster bracket 1, and the caster bracket 1 is provided with two parallel and spaced arm plates 11 which are arranged obliquely downwards, so that a fork arm structure is formed below the caster bracket 1. Each arm plate 11 is provided with a through hole in a penetrating way, the wheel shaft assembly 3 comprises a screw and a locknut, the screw is sequentially arranged in the two through holes in a penetrating way, and the locknut is in threaded connection with the screw so as to lock the screw on the two arm plates 11. The roller 4 is rotatably mounted on the screw by means of the bearing 2, and the roller 4 and the bearing 2 are located between the two arm plates 11.

As shown in fig. 2 and 3, the roller 4 includes a hub 41 and a tire 42, and the tire 42 is fitted around the outer circumferential surface of the hub 41. It should be noted that, the inner ring 410 of the hub 41 has an inner angle inclined surface 411, so that a smooth transition is realized at the inner angle of the inner ring 410, and the structural strength and the aesthetic property of the hub 41 are improved.

When the cleaning device cleans along the set track, hair foreign matters on the ground are easily rolled into the bearing 2 on the trundle along with the rotation of the trundle, and high-frequency abnormal sound can occur to the trundle along with the increase of the hair foreign matters, even the condition of blocking and not rotating occurs, and the normal walking function of the trundle is seriously affected. Moreover, the cleaning of hair foreign bodies is difficult, time-consuming and labor-consuming.

In order to solve the above problem, as shown in fig. 2 and 3, the caster of this embodiment further includes a guard bar 5, where the guard bar 5 includes a first plate 51 and a second plate 52, the first plate 51 is disposed on the outer side of the bearing 2, two ends of the first plate 51 along the length direction thereof are connected with a second plate 52 at an included angle, and the second plate 52 extends toward the inside of the hub 41 along the axial direction of the hub 41 of the roller 4. When the castor walks, the hair foreign matter on the ground can be wound on the protective strip 5 after being wound into the roller 4, so that the protective strip 5 has a good blocking effect, abnormal sound and dead locking caused by the hair foreign matter entering the bearing 2 are avoided, and the protection effect of the bearing 2 is improved. In addition, the hair foreign matter wound on the protective strip 5 is more convenient to clean, so that the cleaning difficulty is reduced, and the cleaning efficiency is improved.

The first plate 51 and the two second plates 52 of this embodiment are connected at right angles, so that the three are connected into a U-shaped frame, and the opening of the U-shaped frame faces the bearing 2. As shown in fig. 2, the first plate 51 is horizontally installed on the outer side of the arm plate 11 in a straight shape extending in the radial direction of the roller 4. The central position of the first plate 51 is provided with a mounting hole 511, the first plate 51 is sleeved on the wheel shaft assembly 3 through the mounting hole 511, and the first plate 51 is clung to the outer side of the corresponding arm plate 11 so as to avoid abrasion with the circumferential end surface of the bearing 2. In other embodiments, the first plate 51 comprises two separate plates joined together at an included angle. The first plate 51 may be mounted on the outside of the arm plate 11 so as to be inclined after being rotated around the screw by an arbitrary angle. Of course, the first plate 51 may be integrally formed with the arm plate 11, etc., so long as the purpose of preventing entanglement of hair can be achieved, and the mounting manner of the first plate 51 is not particularly limited.

Specifically, the caster has two guard bars 5, and the first plates 51 of the two guard bars 5 are respectively disposed at two outer sides of the axial direction of the bearing 2, that is, the two guard bars 5 are respectively mounted at two axial ends of the bearing 2, so as to enhance the protection effect on the bearing 2. The screw rod is respectively arranged in the mounting holes 511 of the two first plates 51 in a penetrating way, after the locknut is screwed down, the first plates 51 of each protection bar 5 are fixedly clung to the outer sides of the arm plates 11 on the same side, so that the protection bars 5 are stably mounted.

Further, as shown in fig. 3 and fig. 4, the end of the second plate 52 far away from the first plate 51 is connected with a third plate 53 at an included angle, so that the second plate 52 and the third plate 53 enclose a winding slot 50 with an opening facing outwards, and the third plate 53 abuts against or is close to the inner ring 410 of the roller 4. When the caster travels, the hair foreign matters can be wound on the two second plates 52 at the same side along with the rotation of the caster and are contained in the hair winding groove 50, and the hair foreign matters are effectively blocked and collected through the hair winding groove 50, so that the hair foreign matters can be conveniently and rapidly cleaned.

In this embodiment, as shown in fig. 4, the third plate 53 includes an extension portion 531 and a stop portion 532, the extension portion 531 is parallel to the first plate 51, and two ends of the extension portion 531 are respectively connected to the stop portion 532 and the second plate 52 on the same side, so that the guard bar 5 has a double-hook structure. The extension portion 531, the stop portion 532 and the corresponding second plate 52 enclose a U-shaped hair winding groove 50, and the opening of the hair winding groove 50 faces to the outer side of the axial direction of the bearing 2 (opposite to the opening of the U-shaped frame), so that the hair foreign matters enter the inner ring 410 of the roller 4 and then directly enter the hair winding groove 50, and are wound on the second plate 52, and the blocking and collecting effects on the hair foreign matters are further improved.

It should be noted that, the stop portion 532 is connected to the extension portion 531 in an outward inclined manner, so that an outer edge of an outer side surface of the stop portion 532 approaches or abuts against an inner surface of the hub 41. The stop portion 532 of the present embodiment is as close to the inner angle inclined surface 411 of the hub 4 as possible, so that the gap between the stop portion 532 and the inner angle inclined surface 411 is small enough to prevent the hair foreign matters from entering the bearing 2 through the gap, and the protection effect of the protection strip 5 is ensured. In other embodiments, the outer edge of the outer side surface of the stop portion 532 may also be close to or abut against the inner ring 410 of the hub 4, so that the gap between the stop portion 532 and the inner ring 410 is small enough to prevent the hair foreign matter from entering the bearing 2 through the gap. In addition, the inner surface of extension 531 is close to or abuts against the spoke surface of hub 4 for the clearance between extension 531 and the spoke surface of hub 4 is little enough, has further increased the degree of difficulty that the hair foreign matter got into bearing 2, has improved the protection effect of protection strip 5.

Further, as shown in fig. 2 and 3, corners of the stopper 532 away from the extension 531 are each provided with a rounded structure 5321. By setting the corners of the stop portion 532 away from the extension portion 531 to be rounded structures 5321, damage to the inner corner inclined surface 411 is avoided, and protection of the hub 41 is improved. Meanwhile, compared with the corner which is right-angled, the problem that the area where the corner of the round corner structure 5321 is not easy to accumulate hair foreign matters is solved, the hair foreign matter collecting effect is further improved, and the hair foreign matters can be cleaned at the later stage conveniently.

It should be noted that, the protection strip 5 in this embodiment is a stainless steel strip, and the stainless steel strip has high structural strength and wear resistance, so as to avoid breakage after the protection strip 5 is slightly damaged. Meanwhile, the stainless steel bar has higher anti-corrosion performance, and the service life of the protection bar 5 is prolonged. In other embodiments, other materials may be used for the guard bar 5, and only the structural strength, wear resistance and corrosion resistance of the guard bar 5 need be ensured, which are not listed here.

Further, the first plate 51, the two second plates 52 and the two third plates 53 are formed integrally by bending, so that the processing difficulty of the protection strip 5 is low, the processing efficiency is high, and the cost of the protection strip 5 is reduced.

The width of the guard bar 5 of this embodiment is 19mm to 21mm. The first plate 51, the second plate 52 and the third plate 53 are equal-width plates, and the widths thereof can be 19mm, 19.5mm, 20mm, 20.5mm or 21mm, etc., so that the protection strip 5 has enough structural strength and the light-weight design requirement of the protection strip 5 can be considered. Of course, in other embodiments, the width of the guard bar 5 may be flexibly adjusted according to the requirements, which is not particularly limited herein.

The above embodiments merely illustrate the basic principle and features of the present utility model, and the present utility model is not limited to the above embodiments, but may be varied and altered without departing from the spirit and scope of the present utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. Caster, including truckle support (1), bearing (2), shaft subassembly (3) and gyro wheel (4), truckle support (1) have two arm boards (11), gyro wheel (4) pass through bearing (2) rotate install in on shaft subassembly (3), shaft subassembly (3) fixed mounting are two on arm board (11), its characterized in that, the truckle still includes the protection strip, the protection strip includes:

a first plate (51) provided outside the bearing (2);

the second plate (52), both ends of first board (51) along its length direction are the contained angle and are connected with one second board (52), second board (52) are followed the axial orientation of wheel hub (41) of gyro wheel (4) wheel hub (41) inside extension sets up.

2. The castor according to claim 1, wherein the guard bar further comprises a third plate (53), and wherein a third plate (53) is connected to the end of the second plate (52) remote from the first plate (51) at an angle such that the second plate (52) and the third plate (53) enclose an outwardly open hair winding channel (50).

3. The castor according to claim 2, characterized in that the third plate (53) comprises an extension (531) and a stop (532), the extension (531) being parallel to the first plate (51) and the two ends of the extension (531) being connected to the stop (532) and to the second plate (52) on the same side, respectively, so that the guard bar is of double-hook construction.

4. A castor according to claim 3, wherein the stop (532) is connected to the extension (531) obliquely outwards so that the outer edge of the outer side of the stop (532) is close to or abuts against the inner surface of the hub (41).

5. The castor as claimed in claim 4, characterized in that the corners of the stop (532) remote from the extension (531) are each provided with rounded structures (5321).

6. The castor according to claim 2, wherein the first plate (51), the two second plates (52) and the two third plates (53) are integrally formed by bending.

7. The castor according to claim 2, wherein the first plate (51) is provided with a mounting hole (511), the first plate (51) is sleeved on the wheel axle assembly (3) through the mounting hole (511), and the first plate (51) is tightly attached to the outer side of the corresponding arm plate (11).

8. The castor according to any one of claims 1 to 7, wherein the guard bar has a width of 19mm to 21mm.

9. The castor according to any one of claims 1 to 7, wherein the castor has two guard bars, the first plates (51) of which are respectively arranged on two outer sides in the axial direction of the bearing (2).

10. Cleaning device, characterized in that it comprises a castor according to any of claims 1-9.