CN212066628U - Universal wheel, movable chassis and floor sweeping robot - Google Patents
Universal wheel, movable chassis and floor sweeping robot Download PDFInfo
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- CN212066628U CN212066628U CN202020245876.3U CN202020245876U CN212066628U CN 212066628 U CN212066628 U CN 212066628U CN 202020245876 U CN202020245876 U CN 202020245876U CN 212066628 U CN212066628 U CN 212066628U
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Abstract
The utility model discloses a universal wheel, a movable chassis and a sweeping robot, wherein the universal wheel comprises a support, a roller and a connecting shaft; the bottom of the support is concavely provided with an installation cavity, a pair of side walls of the installation cavity are provided with positioning concave parts, and the top of the support is provided with a shaft hole; the wheel shaft is arranged in the roller wheel, and two ends of the wheel shaft are respectively connected with the two positioning concave parts in a clamping manner, so that the roller wheel is contained in the mounting cavity and can rotate around the wheel shaft; the connecting shaft is connected with the shaft hole in an interference fit manner; the middle part of the circumferential outer surface of the wheel shaft is circumferentially provided with an annular groove, and the annular groove reduces the friction force between the roller and the wheel shaft. The support adopts more simple card solid mode to carry out fixed connection with the shaft, improves shaft pivoted stability, reduces the area of contact of shaft and gyro wheel simultaneously, reduces the gliding frictional force each other, improves the life of gyro wheel, greatly reduces use cost.
Description
Technical Field
The utility model relates to an intelligence house technical field, concretely relates to is an universal wheel and removes chassis, robot of sweeping floor.
Background
The universal wheel is arranged on the sweeping robot to drive the sweeping robot to walk and turn. At present, the universal wheel is driven to run by adopting rolling connection of a bearing, and has the advantages of small friction force, stable running, difficult abrasion and the like, but the size and the manufacturing cost of the universal wheel are increased by adopting the connection mode. Therefore, merchants gradually adopt sliding connection to replace rolling connection, the size of the universal wheel is reduced, and the production cost of a bearing is avoided.
Chinese utility model patent that bulletin number is CN209489967U universal wheel subassembly and have its intelligent cleaning equipment, it includes universal wheel support and universal wheel, be provided with the universal wheel axle in the universal wheel, the universal wheel support is provided with first location concave part and second location concave part, the internal surface of first location concave part is provided with first arch, the internal surface of second location concave part is provided with the second arch, the first end of universal wheel axle is provided with first trip, the second end of universal wheel axle is provided with the second trip, first trip card is held first arch, the second trip card is held the second arch to realize that the universal wheel axle nonrotatably set up in the universal wheel support, the universal wheel is around universal wheel axle relative slip. The universal wheel shaft of the universal wheel assembly is not connected with the universal wheel support or the universal wheel in a rolling mode through the bearing, and therefore the production cost of the bearing is reduced.
But the block structure of foretell universal wheel axle and universal wheel support is comparatively complicated for it is comparatively troublesome to process to make, and this structural stability is relatively poor, and when the universal wheel received great vibrations, there was not hard up risk in the universal wheel axle. In addition, the friction between the universal wheel shaft and the universal wheel is large, so that relative sliding is difficult, and the universal wheel is easy to wear.
SUMMERY OF THE UTILITY MODEL
In order to overcome above-mentioned adoption sliding connection's universal wheel has the technical defect that the structure is complicated and easy wearing and tearing, the utility model provides an universal wheel, support and shaft adopt more simple card solid mode to carry out fixed connection, improve shaft pivoted stability, reduce the area of contact of shaft and gyro wheel simultaneously, reduce the frictional force of mutual slip, improve the life of gyro wheel, greatly reduce use cost.
In order to solve the above problem, the utility model discloses realize according to following technical scheme:
the utility model relates to a universal wheel, which comprises a support, a roller and a connecting shaft;
the bottom of the support is concavely provided with an installation cavity, a pair of side walls of the installation cavity are provided with positioning concave parts, and the top of the support is provided with a shaft hole;
the wheel shaft is arranged in the roller wheel, and two ends of the wheel shaft are respectively connected with the two positioning concave parts in a clamping manner, so that the roller wheel is contained in the mounting cavity and can rotate around the wheel shaft;
the middle part of the circumferential outer surface of the wheel shaft is circumferentially provided with an annular groove, and the annular groove reduces the friction force between the roller and the wheel shaft.
Furthermore, the positioning concave part comprises an embedded groove and a clamping protrusion arranged on the surface of the embedded groove, and the end part of the wheel shaft is abutted against the bottom of the embedded groove.
Furthermore, the embedded groove comprises a straight line section sub groove and an arc section sub groove which are connected, the arc section sub groove is arranged at the top of the straight line section sub groove, and an opening is formed in the bottom of the straight line section sub groove;
the width size of the straight-line segment sub-groove and the diameter size of the circular arc segment sub-groove are the same as the diameter size of the wheel shaft.
Furthermore, the number of the clamping protrusions is two, and the two clamping protrusions are symmetrically arranged around the central axis of the embedded groove;
two the interval that the joint arch is separated from is crescent after supreme diminishing down.
Further, the minimum distance between the two clamping protrusions is smaller than the diameter size of the wheel shaft.
Furthermore, the projection of the clamping protrusion perpendicular to the embedding groove is located in the linear segment sub-groove.
Furthermore, the circumference surface cover of gyro wheel is equipped with rubber coating wheel.
Preferably, the idler wheel is provided with a plurality of clamping blocks along the circumferential outer surface thereof, and the rubber covered wheel is provided with clamping grooves matched with the clamping blocks along the circumferential outer surface thereof.
A movable chassis comprises the universal wheels, and the connecting shaft is rotatably connected with the movable chassis.
A sweeping robot comprises the movable chassis.
Compared with the prior art, the beneficial effects of the utility model are that: the support is provided with a positioning concave part for fixing the rotating shaft, and two ends of the rotating shaft are respectively connected with the two positioning concave parts in a clamping manner, so that the wheel shaft is clamped and fixed in the support in a non-rotatable manner, and the roller rotates around the wheel shaft in a sliding manner. This block mode realizes the simple dismouting of universal wheel, and the firm in connection of shaft and support is reliable, avoids removing the shaft of in-process and receives vibrations and take place the skew. The middle part of the curved surface of the wheel shaft is provided with the annular groove, the annular groove reduces the contact area of the wheel shaft and the roller, reduces the friction force of the relative sliding of the wheel shaft and the roller, enables the roller to easily rotate around the wheel shaft in a sliding manner, prolongs the service life of the roller, and reduces the use cost.
Drawings
The following detailed description of embodiments of the invention is provided with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the universal wheel of the present invention;
FIG. 2 is a schematic diagram of FIG. 1, taken apart;
fig. 3 is a schematic structural diagram of the support according to the present invention;
FIG. 4 is an enlarged schematic view of portion B of FIG. 3;
fig. 5 is a top view of the support according to the present invention;
FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;
fig. 7 is a schematic structural view of the wheel axle of the present invention;
in the figure: 1-a support; 11-a mounting cavity;
12-a positioning recess; 121-embedded groove; 1211-straight segment sub-groove; 1212-arc segment subslot; 122-a clamping protrusion;
2-a roller; 21-a fixture block;
3-wheel shaft; 31-an annular groove;
4-a connecting shaft;
5-wrapping a rubber wheel; 51-card slot.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.
As shown in fig. 1 to 7, the preferred structure of the universal wheel of the present invention is shown. The universal wheel comprises a support 1, an idler wheel 2 and a connecting shaft 4, wherein the bottom of the support 1 is concavely provided with an installation cavity 11, the top of the support 1 is provided with a shaft hole, a pair of side walls of the installation cavity 11 are provided with positioning concave parts 12, the inside of the idler wheel 2 is provided with a wheel shaft 3, and two ends of the wheel shaft 3 are respectively connected with the two positioning concave parts 12 in a clamping manner, so that the idler wheel 2 is accommodated in the installation cavity 11 and can rotate around the wheel shaft 3; the diameter of the connecting shaft 4 is larger than the size of the shaft hole, so that the bottom of the connecting shaft 4 is connected in the shaft hole in an interference fit manner, the connecting shaft 4 and the support 1 form an integrated structure, and the connecting shaft 4 and the support 1 can synchronously rotate; the middle part of the circumferential outer surface of the wheel axle 3 is provided with an annular groove 31 along the circumferential direction, and the annular groove 31 reduces the friction force between the roller 2 and the wheel axle 3.
Referring to fig. 2, 3 and 5, according to the general roller 2 having a cylinder-like structure, the axle 3 is horizontally inserted in the axial direction of the roller 2, so that the mounting cavity 11 is designed as a cylinder-like cavity, the mounting cavity 11 is formed by a pair of opposite planes and an arc-shaped curved surface, and the positioning recess 12 is designed on the opposite planes.
Referring to fig. 4 and 6, the positioning recess 12 includes an insertion groove 121 and a catching protrusion 122, the insertion groove 121 is disposed at one side near the edge of the holder 1, and the catching protrusion 122 is disposed at the surface of the insertion groove 121. The embedded groove 121 comprises a straight line section sub-groove 1211 and a circular arc section sub-groove 1212 which are connected, the circular arc section sub-groove 1212 is arranged at the top of the straight line section sub-groove 1211, an opening is formed in the bottom of the straight line section sub-groove 1211, the width of the straight line section sub-groove 1211 and the diameter of the circular arc section sub-groove 1212 are both the same as the diameter of the wheel shaft 3, the wheel shaft 3 can be inserted from one end of the opening of the straight line section sub-groove 1211 and then move towards one side of the circular arc section sub-groove 1212, and the end of the wheel shaft 3 is attached to the bottom of the.
Further, the number of the clamping protrusions 122 is two, and the clamping protrusions 122 have certain elasticity. The two clamping protrusions 122 are symmetrically arranged about a central axis of the insertion groove 121, and a projection of the clamping protrusion 122 perpendicular to the insertion groove 121 falls in the linear segment sub-groove 1211. The distance between the two clamping protrusions 122 gradually decreases from bottom to top and then gradually increases, and the minimum distance between the two clamping protrusions 122 is smaller than the diameter of the wheel shaft 3. The process of moving the wheel axle 3 in the insertion groove 121 is as follows: the end of the wheel shaft 3 is abutted against the bottom of the embedded groove 121, the curved surface of the wheel shaft 3 extends from one end of the opening of the straight-line segment sub-groove 1211, the wheel shaft 3 moves towards one side of the circular arc segment sub-groove 1212, the curved surface of the wheel shaft 3 gradually abuts against the clamping protrusion 122 to be spread towards two sides, when the wheel shaft 3 passes through the minimum distance between the two clamping protrusions 122, the upper portion of the curved surface of the wheel shaft 3 abuts against the side wall of the circular arc segment sub-groove 1212, at the moment, the clamping protrusion 122 abuts against the lower side of the curved surface of the wheel shaft 3, and the wheel shaft 3 is clamped and fixed on the support 1.
Preferably, the support 1 is formed by injection molding of a material with certain elasticity, so that when the connecting shaft 4 is inserted into a shaft hole in a hydraulic jack or the like manner, the shaft hole of the support 1 is elastically expanded; and when the wheel axle 3 is clamped in the positioning concave part 12, the two clamping protrusions 122 are relatively expanded.
Referring to fig. 1 and 2, a rubber coating wheel 5 is sleeved on the outer circumferential surface of the roller 2. As a preferable scheme of this embodiment, each of the rollers 2 is provided with a plurality of fixture blocks 21 along the circumferential outer surface thereof, the rubber covered wheel 5 is provided with a fixture groove 51 along the circumferential outer surface thereof, the fixture blocks 21 on the rubber covered wheel 5 are fastened and fixed with the fixture grooves 51 of the rubber covered wheel 5.
The utility model provides a remove chassis, includes the above universal wheel, the bottom on removing the chassis is equipped with the mounting hole, and the bearing has been inlayed in the mounting hole, and connecting axle 4 cup joints in the inner circle of bearing, makes the universal wheel whole and remove chassis rotation each other, removes the chassis and passes through the universal wheel and realize turning to.
A sweeping robot comprises the universal wheel.
The universal wheels, the movable chassis and other structures of the sweeping robot are disclosed in the embodiment by referring to the prior art.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, so that any modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments do not depart from the technical solution of the present invention, and still fall within the scope of the technical solution of the present invention.
Claims (10)
1. The universal wheel is characterized by comprising a support, a roller and a connecting shaft;
the bottom of the support is concavely provided with an installation cavity, a pair of side walls of the installation cavity are provided with positioning concave parts, and the top of the support is provided with a shaft hole;
the wheel shaft is arranged in the roller wheel, and two ends of the wheel shaft are respectively connected with the two positioning concave parts in a clamping manner, so that the roller wheel is contained in the mounting cavity and can rotate around the wheel shaft;
the connecting shaft is connected with the shaft hole in an interference fit manner;
the middle part of the circumferential outer surface of the wheel shaft is circumferentially provided with an annular groove, and the annular groove reduces the friction force between the roller and the wheel shaft.
2. The universal wheel of claim 1, wherein: the positioning concave part comprises an embedded groove and a clamping protrusion arranged on the surface of the embedded groove, and the end part of the wheel shaft abuts against the bottom of the embedded groove.
3. The universal wheel of claim 2, wherein: the embedded groove comprises a straight line section sub groove and an arc section sub groove which are connected, the arc section sub groove is arranged at the top of the straight line section sub groove, and an opening is formed in the bottom of the straight line section sub groove;
the width size of the straight-line segment sub-groove and the diameter size of the circular arc segment sub-groove are the same as the diameter size of the wheel shaft.
4. The universal wheel of claim 3, wherein: the number of the clamping protrusions is two, and the two clamping protrusions are symmetrically arranged around the central axis of the embedded groove;
two the interval that the joint arch is separated from is crescent after supreme diminishing down.
5. The universal wheel of claim 4, wherein: the minimum distance between the two clamping bulges is smaller than the diameter size of the wheel shaft.
6. The universal wheel of claim 4, wherein: the projection of the clamping protrusion perpendicular to the embedded groove is located in the straight-line segment sub-groove.
7. The universal wheel of claim 1, wherein: the rubber coating wheel is sleeved on the outer circumferential surface of the roller.
8. The universal wheel of claim 7, wherein: the rubber covered wheel is provided with clamping grooves matched with the clamping blocks along the circumferential outer surface.
9. A mobile chassis, characterized by: the universal wheel comprises the universal wheel as claimed in any one of claims 1 to 8, wherein the connecting shaft is rotatably connected with the movable chassis.
10. The utility model provides a robot of sweeping floor which characterized in that: comprising the mobile chassis of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020245876.3U CN212066628U (en) | 2020-03-03 | 2020-03-03 | Universal wheel, movable chassis and floor sweeping robot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020245876.3U CN212066628U (en) | 2020-03-03 | 2020-03-03 | Universal wheel, movable chassis and floor sweeping robot |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212066628U true CN212066628U (en) | 2020-12-04 |
Family
ID=73559651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020245876.3U Active CN212066628U (en) | 2020-03-03 | 2020-03-03 | Universal wheel, movable chassis and floor sweeping robot |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212066628U (en) |
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2020
- 2020-03-03 CN CN202020245876.3U patent/CN212066628U/en active Active
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