CN211509842U - Lawn mower convenient to steering operation - Google Patents
Lawn mower convenient to steering operation Download PDFInfo
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- CN211509842U CN211509842U CN201921602858.XU CN201921602858U CN211509842U CN 211509842 U CN211509842 U CN 211509842U CN 201921602858 U CN201921602858 U CN 201921602858U CN 211509842 U CN211509842 U CN 211509842U
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- 230000000712 assembly Effects 0.000 claims abstract description 17
- 238000000429 assembly Methods 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010079 rubber tapping Methods 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
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Abstract
The utility model discloses a mower convenient for steering operation, which comprises a front wheel and a rear wheel which are arranged on a mower body, wherein the front wheel or/and the rear wheel is an omnidirectional wheel, and the omnidirectional wheel comprises a hub outer ring, a hub inner ring and a roller assembly; the number of the wheel hub outer rings is two, and the wheel hub outer rings are coaxially and fixedly connected to two sides of the wheel hub inner ring; a plurality of roller assemblies are arranged between the hub outer ring and the hub inner ring and are uniformly distributed in the circumferential direction, and each roller assembly is provided with a roller capable of rolling around the axis of the roller assembly. The utility model discloses beneficial effect who has: the omni-directional wheel is adopted, so that the wheels of the mower can complete steering operation without leaving the ground, and the labor intensity and the steering difficulty are reduced.
Description
Technical Field
The invention belongs to the technical field of garden tools, and particularly relates to a mower convenient for steering operation.
Background
The lawn mower is garden equipment used for trimming a lawn, and a common lawn mower is a walking type lawn mower with handrails, wherein the lawn mower moves integrally through a front wheel and a rear wheel which are arranged on a mower body, trims the lawn through a cutter head arranged at the bottom of the mower body, and the cutter head is driven by a power device on the mower body.
During mowing, a steering operation is necessarily required to change the traveling direction of the mower. For the lawn mowers in the prior art, before the steering operation, a user needs to press down the handrail of the lawn mower, and at the moment, the lawn mower rotates by taking the rear wheels as pivots to lift the front wheels of the lawn mower off the ground, so that the lawn mower can complete the steering action by means of the rear wheels. Therefore, the user is required to continuously press down the mower handrail in the steering process, and the power device and other components with larger weight are arranged on the mower, so that more physical force is required for the old or people with weak physical ability, and the labor intensity is increased. When the lawn is uneven, the turning in the mode has certain dangerousness and turning difficulty.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the mower convenient for steering operation, which can realize steering operation without lifting wheels off the ground, thereby greatly reducing steering difficulty and labor intensity.
In order to solve the prior art problem, the invention discloses a mower convenient for steering operation, which comprises a front wheel and a rear wheel which are arranged on a mower body, wherein the front wheel or/and the rear wheel is/are an omnidirectional wheel, and the omnidirectional wheel comprises a hub outer ring, a hub inner ring and a roller assembly; the number of the wheel hub outer rings is two, and the wheel hub outer rings are coaxially and fixedly connected to two sides of the wheel hub inner ring; a plurality of roller assemblies are arranged between the hub outer ring and the hub inner ring and are uniformly distributed in the circumferential direction, and each roller assembly is provided with a roller capable of rolling around the axis of the roller assembly.
Furthermore, the hub outer ring is provided with a plurality of first supports which protrude along the radial direction and are uniformly distributed along the circumferential direction, and the hub inner ring is provided with second supports which correspond to the first supports one to one; the first support is fixedly connected with the corresponding second support to fix the roller shaft of the roller assembly, and the roller is rotatably installed on the roller shaft.
Furthermore, a pair of first half blind holes are symmetrically arranged on the first support, and second half blind holes corresponding to the first half blind holes on the corresponding first support are arranged on the second support; the first half blind hole and the corresponding second half blind hole form a blind hole for accommodating one end of the roll shaft.
Further, the first support and the corresponding second support are connected in a positioning mode through a positioning structure.
Furthermore, a first connecting hole is formed in the first support, and a second connecting hole corresponding to the first connecting hole is formed in the second support; the first connecting hole is fixedly connected with the second connecting hole through a first connecting piece.
Furthermore, the outer ring of the hub is provided with a plurality of first connecting parts and second connecting parts which extend in the direction parallel to the axis; the first connecting part is provided with a third connecting hole, and the second connecting part is provided with a fourth connecting hole; the first connecting part on the outer ring of one of the wheel hubs is coaxially aligned with the second connecting part on the outer ring of the other wheel hub so that the third connecting hole and the fourth connecting hole are fixedly connected through a second connecting piece; and the inner end of the third connecting hole is provided with a containing hole for containing the inner end of the corresponding second connecting part.
Further, the wheel hub outer lane is equipped with a plurality of certainly the spoke that the centre bore of wheel hub outer lane extends outward, the spoke is circumference equipartition, be equipped with a first connecting portion and a second connecting portion on the spoke.
Furthermore, the inner side of the outer ring of the hub is provided with a rim with steps, and the inner ring of the hub is sleeved on the outer circular surfaces of the two rims and is axially limited by the two steps.
Furthermore, the hub outer ring and the hub inner ring are connected through a first connecting piece, holes used for being filled with the first connecting piece are formed in the corresponding positions of the hub outer ring and the hub inner ring, and a chamfer is formed in one end, on a joint surface, of each hole used for being filled with the first connecting piece; the two hub outer rings are connected through a second connecting piece, holes used for being filled with the second connecting piece are formed in corresponding positions of the two hub outer rings, and a chamfer is formed in one end, on a joint surface, of each hole used for being filled with the second connecting piece.
Further, the roller assemblies fixed by one of the hub outer ring and the hub inner ring are distributed in a circumferential direction in a staggered manner with the roller assemblies fixed by the other hub outer ring and the hub inner ring.
Further, the rotational axis of the roller assembly is perpendicular to the rotational axis of the omni wheel; the roller assembly further comprises a sleeve and a gasket, the sleeve is rotatably sleeved on the periphery of the roller shaft, the roller is fixedly arranged on the periphery of the sleeve, and the gaskets are respectively arranged at two ends of the roller; the outer circular surface of the roller is an arc surface, and the circle center corresponding to the generatrix of the roller is collinear with the central axis of the omnidirectional wheel.
The invention has the following beneficial effects:
1. the invention adopts the omnidirectional wheel to ensure that the wheels of the mower complete steering operation without leaving the ground, thereby reducing labor intensity and steering difficulty.
2. The invention adopts a three-body hub structure, realizes the purpose of convenient assembly and greatly reduces the installation difficulty of the omnidirectional wheel.
Drawings
FIG. 1 is a perspective view of a preferred embodiment of the present invention;
FIG. 2 is a perspective view of the construction of the omni wheel of the embodiment of FIG. 1;
figure 3 is an exploded perspective view of the omni wheel of the embodiment shown in figure 1;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is a front elevational view of the construction of the omni-wheel of the embodiment of FIG. 1;
FIG. 6 is a sectional view of the structure taken along line B-B of FIG. 5;
FIG. 7 is an enlarged view of a portion of the first bracket of the embodiment of FIG. 1;
FIG. 8 is an enlarged fragmentary view of a second bracket of the embodiment of FIG. 1;
FIG. 9 is an exploded perspective view of the roller assembly of the embodiment of FIG. 1.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example one
As shown in fig. 1 to 9, a lawn mower 100 for facilitating steering operation includes a machine body 2, and front and rear wheels 5 and 3 mounted on the machine body 2. The machine body 2 is also provided with a power device 1, a grass collecting bag 4 and a handrail 6. The handrail 6 is provided with a handle switch 7, and the handle switch 7 is used for controlling the start and stop of the power device 1. The front wheel 5 is an omni wheel, which comprises a hub outer ring 501, a hub inner ring 505 and a roller assembly 502; the number of the hub outer rings 501 is two, and the hub outer rings are coaxially and fixedly connected to two sides of the hub inner ring 505; a plurality of roller assemblies 502 are arranged between the hub outer ring 501 and the hub inner ring 505, the roller assemblies 502 are uniformly distributed in the circumferential direction, and the roller assemblies 502 are provided with rollers 5021 capable of rolling around the axes of the roller assemblies.
The front wheel 5 of the mower does not need to be lifted off the ground and the rear wheel 3 is used for steering, the steering action can be conveniently completed only by laterally pushing the handrail 6, and the steering action can be effectively carried out conveniently.
In order to meet the installation requirement of the roller assembly 502, the hub outer ring 501 is provided with a plurality of first brackets 501a which protrude in the radial direction and are uniformly distributed in the circumferential direction, and the hub inner ring 505 is provided with second brackets 505a which correspond to the first brackets 501a in a one-to-one manner; the first bracket 501a is fixedly coupled to the corresponding second bracket 505a to fix the roller shaft 5022 of the roller assembly 502, and the roller 5021 is rotatably mounted on the roller shaft 5022.
As shown in fig. 7 and 8, in order to meet the installation requirement of the roller shaft 5022, a pair of first half blind holes 501j are symmetrically arranged on the first bracket 501a, and a second half blind hole 505b corresponding to the first half blind hole 501j on the corresponding first bracket 501a is arranged on the second bracket 505 a; the first half blind hole 501j and the corresponding second half blind hole 505b form a blind hole for receiving one end of the roller shaft 5022. The blind hole is preferably a clearance fit with the roller shaft 5022 such that when the rotational connection between the roller 5021 and the roller shaft 5022 fails, the roller shaft 5022 can still rotate within the blind hole, thereby enabling rotation of the entire roller assembly 502 and improving the reliability of the roller assembly 502. The first half blind hole 501j and the second half blind hole 505b may be semicircular holes, or may be other holes capable of receiving a roller shaft and providing a limiting function. When the hub outer ring 501 and the hub inner ring 505 are fixedly connected, two adjacent first brackets 501a are respectively aligned with the corresponding second brackets 505a so as to fix one roller shaft 5022.
In addition to the manner of fixing the roller shaft 5022, a receiving hole may be formed in one of the holders to completely receive the end of the roller shaft 5022, and the corresponding position of the other holder may only serve to restrict the roller shaft 5022 from being separated from the receiving hole.
In order to achieve the quick alignment of the hub outer ring 501 and the hub inner ring 505, the first support 501a and the corresponding second support 505a are connected in a positioning manner through a positioning structure. Specifically, as shown in fig. 7 and 8, the inner side surface of the first bracket 501a is provided with a positioning protrusion 501l, and correspondingly, the outer side surface of the second bracket 505a is provided with a positioning recess 505 d. After the positioning protrusion 501l is inserted into the positioning recess 505d, the hub outer ring 501 and the hub inner ring 505 are in an aligned state. In addition, the positioning structure can also play a role in effectively reducing the instability of the omnidirectional wheel in the working state.
In order to meet the convenient connection requirement of the first support 501a and the second support 505a, a first connection hole 501k is formed in the first support 501a, and a second connection hole 505c corresponding to the first connection hole 501k is formed in the second support 505 a; the first connection hole 501k is fixedly connected to the second connection hole 505c by a first connection member 503. As shown in fig. 7 and 8, the first connection hole 501k and the second connection hole 505c are both unthreaded holes, the first connection member 503 is a tapping screw, the second connection hole 505c contains glue for thread forming, and the first connection member 503 is screwed into the second connection hole 505c to form threads so as to achieve the fixed connection. One end of the first connecting hole 501k on the combining surface or/and one end of the second connecting hole 505c on the combining surface are/is chamfered, so that in the process that the first connecting piece 503 is screwed into the second connecting hole 505c after passing through the first connecting hole 501k, the glue in the second connecting hole 505c can enter a space formed by the chamfer when being extruded and overflowed by the first connecting piece 503, and the influence on the connection smoothness between the first support 501a and the second support 505a is avoided. The term "joint surface" refers to a surface on which two members to be joined are in close contact with each other when they are joined.
In order to meet the convenient connection requirement of the hub outer ring 501 and the hub inner ring 505, the hub outer ring 501 is provided with a plurality of first connecting parts 501g and second connecting parts 501e which extend in the direction parallel to the axis; the length of the second connection portion 501e is greater than the length of the second connection portion 501 g. The first connecting portion 501g is provided with a third connecting hole 501c, and the second connecting portion 501e is provided with a fourth connecting hole 501 f. The third connection hole 501c and the fourth connection hole 501f are both unthreaded holes. The first connecting portion 501g of one of the hub outer rings 501 is coaxially aligned with the second connecting portion 501e of the other hub outer ring 501, so that the third connecting hole 501c and the fourth connecting hole 501f are fixedly connected through the second connecting member 504. The second connecting member 504 is a tapping screw, the fourth connecting hole 501f contains glue for thread forming, and the second connecting member 504 is screwed into the fourth connecting hole 501f to form threads so as to achieve fixed connection. One end of the third connecting hole 501c on the combining surface or/and one end of the fourth connecting hole 501f on the combining surface are/is provided with a chamfer, so that in the process that the second connecting piece 504 is screwed into the fourth connecting hole 501f after passing through the third connecting hole 501c, glue in the fourth connecting hole 501f can enter a space formed by the chamfer when being extruded by the second connecting piece 504 to overflow, and therefore the influence on the connection smoothness between the two hub outer rings 501 is avoided. The third connecting hole 501c has an inner end formed with a receiving hole 501i for receiving an inner end of the corresponding second connecting portion 501e, and an outer end formed with a counter-bore for receiving a head of the second connecting member 504.
As shown in fig. 2, 3 and 5, in order to reduce the self weight of the omni wheel and maintain a certain strength, the hub outer ring 501 is provided with a plurality of spokes 501m extending outwards from a central hole 501b of the hub outer ring 501, the spokes 501m are uniformly distributed in the circumferential direction, and the spokes 501m are provided with a first connecting portion 501g and a second connecting portion 501 e. The spokes 501m preferably extend in the radial direction and are five in number. The central hole 501b is used for mounting the wheel shaft 8, so that the requirement of connecting the omnidirectional wheel and the machine body 2 is met.
As shown in fig. 3, in order to fix the hub outer ring 501 and the hub inner ring 505 on the premise of reducing the axial size, a rim 501d with steps is provided on the inner side of the hub outer ring 501, and the hub inner ring 505 is sleeved on the outer circular surfaces of the two rims 501d and axially limited by the two steps.
As shown in fig. 2, in order to improve the smoothness of the transmission, the number of the roller assemblies 502 distributed in the circumferential direction should be as large as possible, and specifically, the roller assemblies 502 with one hub outer ring 501 and one hub inner ring 505 fixed are distributed in the circumferential direction in a staggered manner with the roller assemblies 502 with the other hub outer ring 501 and the other hub inner ring 505 fixed.
As shown in fig. 5 and 6, the rotational axis of the roller assembly 502 is perpendicular to the rotational axis of the omni wheel. As shown in FIG. 9, the roller assembly 502 further includes a sleeve 5023 and a washer 5024, the sleeve 5023 is rotatably sleeved on the periphery of the roller shaft 5022, the roller 5021 is fixedly disposed on the periphery of the sleeve 5023, and the washer 5024 is respectively mounted at two ends of the roller 5021. The roller 5021 is processed by soft rubber and has certain impact resistance and buffering capacity. In operation, the roller shaft 5022 and the sleeve 5023 rotate relative to each other, and the roller shaft 5022 is machined from a metal material to reduce wear of the roller shaft 5022 and prolong the service life of the roller assembly 502. The gasket 5024 can effectively prevent the roller 5021 from colliding and rubbing with the first bracket 501a and the second bracket 505a during the operation, and prolong the service life of the roller 5021. As shown in fig. 5, the outer circumferential surface of the roller 5021 is a circular arc surface, so that the circular arc roller 5021 can make the entire tread of the omni wheel more nearly circular than a cylindrical roller, thereby improving the smoothness of the mower during traveling. When the circle center corresponding to the bus 5021b on the outer circumferential surface of the roller 5021 is collinear with the central axis of the omni wheel, the entire wheel surface of the omni wheel is circular, and the rotation smoothness is optimal.
Example two
The difference from the first embodiment is that in the present embodiment, the rear wheels 3 are omni wheels.
EXAMPLE III
The difference from the first embodiment is that in the present embodiment, the front wheels 5 and the rear wheels 3 are all omni-directional wheels.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (11)
1. A lawn mower (100) facilitating steering operation, comprising a front wheel (5) and a rear wheel (3) mounted on a machine body (2), characterized in that: the front wheel (5) or/and the rear wheel (3) is an omni wheel comprising a hub outer ring (501), a hub inner ring (505) and a roller assembly (502); a plurality of roller assemblies (502) are arranged between the hub outer ring (501) and the hub inner ring (505), the roller assemblies (502) are uniformly distributed in the circumferential direction, and the roller assemblies (502) are provided with rollers (5021) capable of rolling around the axis of the roller assemblies.
2. A lawn mower (100) facilitating steering operation as claimed in claim 1 wherein: the number of the hub outer rings (501) is two, the hub outer rings are coaxially fixedly connected to two sides of the hub inner ring (505), the hub outer rings (501) are provided with a plurality of first supports (501 a) which protrude in the radial direction and are uniformly distributed in the circumferential direction, and the hub inner ring (505) is provided with second supports (505 a) which correspond to the first supports (501 a) one by one; the first bracket (501 a) is fixedly connected with the corresponding second bracket (505 a) to fix a roller shaft (5022) of the roller assembly (502), and the roller (5021) is rotatably mounted on the roller shaft (5022).
3. A lawn mower (100) facilitating steering operation as claimed in claim 2 wherein: a pair of first half blind holes (501 j) are symmetrically formed in the first support (501 a), and second half blind holes (505 b) corresponding to the first half blind holes (501 j) in the corresponding first support (501 a) are formed in the second support (505 a); the first half blind hole (501 j) and the corresponding second half blind hole (505 b) form a blind hole for accommodating one end of the roller shaft (5022).
4. A lawn mower (100) facilitating steering operation as claimed in claim 2 wherein: the first support (501 a) and the corresponding second support (505 a) are connected in a positioning mode through a positioning structure, the positioning structure comprises a positioning protrusion portion (501 l) arranged on the inner side surface of the first support (501 a) and a positioning concave portion (505 d) arranged on the outer side surface of the second support (505 a), and the positioning protrusion portion (501 l) can be inserted into the positioning concave portion (505 d) for positioning.
5. A lawn mower (100) facilitating steering operation as claimed in claim 2 wherein: a first connecting hole (501 k) is formed in the first support (501 a), and a second connecting hole (505 c) corresponding to the first connecting hole (501 k) is formed in the second support (505 a); the first connecting hole (501 k) and the second connecting hole (505 c) are fixedly connected through a first connecting piece (503).
6. A lawn mower (100) facilitating steering operation as claimed in claim 2 wherein: the hub outer ring (501) is provided with a plurality of first connecting parts (501 g) and second connecting parts (501 e) which extend in the direction parallel to the axis; the first connecting part (501 g) is provided with a third connecting hole (501 c), and the second connecting part (501 e) is provided with a fourth connecting hole (501 f); the first connecting part (501 g) on one hub outer ring (501) is coaxially aligned with the second connecting part (501 e) on the other hub outer ring (501) so that the third connecting hole (501 c) is fixedly connected with the fourth connecting hole (501 f) through a second connecting piece (504); the inner end of the third connecting hole (501 c) is provided with a containing hole (501 i) for containing the inner end of the corresponding second connecting part (501 e).
7. A lawn mower (100) facilitating steering operation as claimed in claim 6 wherein: wheel hub outer lane (501) are equipped with a plurality of certainly centre bore (501 b) the spoke (501 m) of outside extension of wheel hub outer lane (501), spoke (501 m) are circumference equipartition, be equipped with a first connecting portion (501 g) and a second connecting portion (501 e) on spoke (501 m).
8. A lawn mower (100) facilitating steering operation as claimed in claim 2 wherein: the inner side of the hub outer ring (501) is provided with a rim (501 d) with steps, and the hub inner ring (505) is sleeved on the outer circular surfaces of the two rims (501 d) and is axially limited by the two steps.
9. A lawn mower (100) facilitating steering operation as claimed in claim 2 wherein: the hub outer ring (501) and the hub inner ring (505) are connected through a first connecting piece (503), holes for installing the first connecting piece (503) are formed in corresponding positions of the hub outer ring (501) and the hub inner ring (505), and a chamfer is formed in one end, on a joint surface, of each hole for installing the first connecting piece (503); the two hub outer rings (501) are connected through a second connecting piece (504), holes used for being filled with the second connecting piece (504) are formed in corresponding positions of the two hub outer rings (501), and a chamfer is formed in one end, on a joint surface, of each hole used for being filled with the second connecting piece (504).
10. A lawn mower (100) facilitating steering operation as claimed in claim 1 wherein: the roller assemblies (502) fixed by one hub outer ring (501) and one hub inner ring (505) are distributed in a staggered mode in the circumferential direction with the roller assemblies (502) fixed by the other hub outer ring (501) and the other hub inner ring (505).
11. A lawnmower (100) to facilitate steering operation as claimed in any one of claims 2 to 9, wherein: the axis of rotation of the roller assembly (502) is perpendicular to the axis of rotation of the omni wheel; the roller assembly (502) further comprises a sleeve (5023) and a gasket (5024), the sleeve (5023) is rotatably sleeved on the periphery of the roller shaft (5022), the roller (5021) is fixedly arranged on the periphery of the sleeve (5023), and the two ends of the roller assembly are respectively provided with the gasket (5024); the excircle surface of the roller (5021) is a circular arc surface, and the circle center corresponding to the bus (5021 b) of the roller is collinear with the central axis of the omnidirectional wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921602858.XU CN211509842U (en) | 2019-09-25 | 2019-09-25 | Lawn mower convenient to steering operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921602858.XU CN211509842U (en) | 2019-09-25 | 2019-09-25 | Lawn mower convenient to steering operation |
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| Publication Number | Publication Date |
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| CN211509842U true CN211509842U (en) | 2020-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921602858.XU Active CN211509842U (en) | 2019-09-25 | 2019-09-25 | Lawn mower convenient to steering operation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110603948A (en) * | 2019-09-25 | 2019-12-24 | 江苏苏美达五金工具有限公司 | A lawn mower that is easy to turn and operate |
| JP2025015179A (en) * | 2023-07-20 | 2025-01-30 | いすゞ自動車株式会社 | Hand Cart |
-
2019
- 2019-09-25 CN CN201921602858.XU patent/CN211509842U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110603948A (en) * | 2019-09-25 | 2019-12-24 | 江苏苏美达五金工具有限公司 | A lawn mower that is easy to turn and operate |
| JP2025015179A (en) * | 2023-07-20 | 2025-01-30 | いすゞ自動車株式会社 | Hand Cart |
| JP7647805B2 (en) | 2023-07-20 | 2025-03-18 | いすゞ自動車株式会社 | Hand Cart |
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