WO2023089980A1 - Wheel holding mechanism and wheel - Google Patents
Wheel holding mechanism and wheel Download PDFInfo
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- WO2023089980A1 WO2023089980A1 PCT/JP2022/037434 JP2022037434W WO2023089980A1 WO 2023089980 A1 WO2023089980 A1 WO 2023089980A1 JP 2022037434 W JP2022037434 W JP 2022037434W WO 2023089980 A1 WO2023089980 A1 WO 2023089980A1
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- wheel
- bearing
- vehicle body
- shaft portion
- holding mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
Definitions
- the present invention relates to wheel holding mechanisms and wheels.
- the wheels are rotatably held on the vehicle body.
- it is necessary not only to reduce the size of a vehicle body and wheels, but also to reduce the size of a wheel holding mechanism that holds the wheels.
- FIG. 1 shows an example of a wheel holding mechanism 1 that holds wheels 5 rotatably.
- the wheel holding mechanism 1 includes two bearings 6 and 7 that support a wheel 5, an axle 4 that holds the two bearings, a holding member 2 that suppresses axial movement of the bearing 7, and the holding member 2 on the axle 4. It has a screw 3 to fasten to.
- the holding member 2 is fastened to the axle 4 by a plurality of screws 3 to fix the inner ring of the bearing 7 .
- the axle 4 when the diameter of the wheel 5 is small, the diameter of the axle 4 that holds the two bearings 6 and 7 is also small, making it difficult to fasten the holding member 2 to the axle 4 using multiple screws 3 . Assuming that the screw diameter is D [mm], the axle 4 must have a diameter of at least 4D [mm] or more in order to fasten using two screws 3 .
- the minimum diameter of commercially available screws is 1 mm, but if the diameter of the axle 4 is less than 4 mm, the holding member 2 cannot be fastened to the axle 4 with commercially available screws.
- an object of the present invention is to provide a mechanism that can rotatably support a wheel even if the wheel diameter is small.
- one aspect of the present invention provides a wheel including a first shaft portion extending along a central axis and a second shaft portion extending along the central axis in a direction opposite to the first shaft portion.
- a wheel holding mechanism that rotatably holds a first shaft portion, a first bearing that rotatably supports a first shaft portion, a first vehicle body component that has a first holding portion that holds the first bearing, and a second shaft and a second vehicle body component having a second holding portion holding the second bearing.
- Another aspect of the present invention is a wheel rotatably held by a vehicle body, wherein a first shaft extends along a central axis and is rotatably supported by a first bearing. , a second shaft portion extending in a direction opposite to the first shaft portion along the central axis, the second shaft portion being rotatably supported by the second bearing.
- FIG. 4 is a cross-sectional view of a wheel holding mechanism that rotatably holds a wheel; It is a perspective view of the wheel holding mechanism of a modification. It is a figure which shows the exploded perspective view of the component of the wheel holding mechanism of a modification. It is a figure which shows the exploded perspective view of the component of the wheel holding mechanism of a modification.
- FIG. 2 shows the internal structure of the wheel 11 of the embodiment.
- the wheel 11 includes a first shaft portion 30 extending from the inside to the outside of the wheel along the center axis, and a second shaft portion 31 extending from the inside to the outside of the wheel along the center axis.
- first shaft portion 30 and the second shaft portion 31 are rotatably supported by bearings.
- the first shaft portion 30 and the second shaft portion 31 extend in opposite directions, that is, the second shaft portion 31 extends in the opposite direction to the first shaft portion 30 .
- the first shaft portion 30 and the second shaft portion 31 are preferably formed so as to fit inside the wheel 11 .
- the surface on the side where the first shaft portion 30 is provided becomes the inner surface 32 relatively close to the vehicle body, and the surface on the side where the second shaft portion 31 is provided is It becomes the outer surface 33 which is relatively separated from the vehicle body.
- the first shaft portion 30 is configured as a solid shaft portion
- the second shaft portion 31 is configured as a hollow shaft portion
- the first shaft portion 30 may be configured as a hollow shaft portion
- the second shaft portion 31 may be configured as a solid shaft portion
- both the first shaft portion 30 and the second shaft portion 31 may be solid shaft portions, or both may be hollow shaft portions.
- it is preferable that the first shaft portion 30 and the second shaft portion 31 are formed inside the wheel sandwiched between the inner side surface 32 and the outer side surface 33 so that the size reduction of the wheel 11 is realized.
- FIG. 3 shows a cross-sectional view of the wheel holding mechanism 10 that rotatably holds the wheel 11.
- the wheel holding mechanism 10 includes parts on the vehicle body side that rotatably support the wheel 11.
- the wheel holding mechanism 10 includes a first vehicle body part 12 and a second vehicle body part 20, and a first bearing 14 and a second bearing 15.
- the first bearing 14 rotatably supports the first shaft portion 30 of the wheel 11
- the second bearing 15 rotatably supports the second shaft portion 31 of the wheel 11
- the second bearing 15 is arranged outside the first bearing 14 with respect to the vehicle body.
- the first vehicle body part 12 has a first holding part 13 that holds the first bearing 14
- the second vehicle body part 20 has a second holding part 21 that holds the second bearing 15 .
- the first holding portion 13 has a recess 16 with a circular cross section, and the first bearing 14 is held by fitting the outer ring of the first bearing 14 into the recess 16 .
- the first shaft portion 30 is configured as a hollow shaft portion
- the first holding portion 13 has a convex portion with a circular cross section, and by fitting the inner ring of the first bearing 14 into the convex portion, It holds the first bearing 14 .
- the second holding part 21 has a convex part 24 with a circular cross section, and the inner ring of the second bearing 15 is fitted into the convex part 24 to hold the second bearing 15 .
- the second shaft portion 31 is configured as a solid shaft portion
- the second holding portion 21 has a recess with a circular cross section, and by fitting the outer ring of the second bearing 15 into the recess, the 2 holding the bearing 15;
- the second vehicle body part 20 is a sheet metal part, and is fixed to the first vehicle body part 12 by a fixing portion 23 to restrain axial movement of the second bearing 15 . Since the wheel holding mechanism 10 does not use a screw to hold the second bearing 15, the second bearing 15 can be held without problems even if the inner diameter of the second bearing 15 is less than 4 mm.
- the second vehicle body part 20 has a cover member 22 that covers the outer surface 33 of the wheel 11, and the cover member 22 has a role of protecting the wheel 11 from the outside.
- the cover member 22 preferably covers more than half of the outer surface 33 of the wheel 11 to protect most of the wheel 11 .
- the second holding portion 21 is provided inside the cover member 22 , and the convex portion 24 of the second holding portion 21 protrudes from the cover member 22 in a direction approaching the vehicle body, and the second bearing 15 is fitted in the inner ring of
- the cover member 22 With a thin sheet metal, the distance from the outer surface 33 of the wheel 11 to the outer surface of the cover member 22 can be shortened, and the size reduction of the wheel holding mechanism 10 can be realized.
- the second vehicle body part 20 is a thin plate-shaped sheet metal part fixed to the first vehicle body part 12, but it may be a part that forms part of the exterior of the vehicle body, for example.
- FIG. 4 shows a perspective view of a modified wheel holding mechanism 10a.
- the first vehicle body part 12 is provided with an actuator 40 for rotationally driving the wheel 11a.
- the cover member 22 covers most of the wheel 11a and protects it from the outside.
- the second vehicle body part 20 is a sheet metal part fixed to the first vehicle body part 12 by the fixing part 23. good too.
- the wheel 11 a includes a first shaft portion 30 extending along the central axis, a second shaft portion 31 extending along the central axis in the direction opposite to the first shaft portion 30 , and an internal gear 35 .
- the first bearing 14 rotatably supports the first shaft portion 30 and the second bearing 15 rotatably supports the second shaft portion 31 .
- the first holding portion 13 holds the outer ring of the first bearing 14
- the second holding portion 21 holds the inner ring of the second bearing 15 .
- the external gear 41 on the side of the first vehicle body part 12 meshes with the internal gear 35 provided on the wheel 11a.
- the actuator 40 is an electric motor, and rotates an external gear 41 connected to an output shaft. Since the wheel 11a has the internal gear 35 and the rotational torque of the actuator 40 is transmitted from the external gear 41 to the internal gear 35, there is an advantage that the axial thickness of the torque transmission mechanism can be reduced.
- the present invention can be used for wheels and mechanisms for holding wheels.
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Abstract
A wheel 11 comprises: a first shaft part 30 that extends along a center axis; and a second shaft part 31 that extends along the center axis in the opposite direction from the first shaft part 30. A first bearing 14 rotatably supports the first shaft part 30, and a second bearing 15 rotatably supports the second shaft part 31. A first body component 12 has a first holding part 13 that holds the first bearing 14, and a second body component 20 has a second holding part 21 that holds the second bearing 15.
Description
本発明は、車輪保持機構および車輪に関する。
The present invention relates to wheel holding mechanisms and wheels.
車輪型移動ロボットなどの移動体において、車輪は車体に回転可能に保持される。移動体の小型化を実現するためには、車体および車輪を小型化するだけでなく、車輪を保持する車輪保持機構の小型化も必要となる。
In mobile objects such as wheeled mobile robots, the wheels are rotatably held on the vehicle body. In order to reduce the size of a moving object, it is necessary not only to reduce the size of a vehicle body and wheels, but also to reduce the size of a wheel holding mechanism that holds the wheels.
図１は、車輪５を回転可能に保持する車輪保持機構１の例を示す。車輪保持機構１は、車輪５を支持する２つの軸受６、７と、２つの軸受を保持する車軸４と、軸受７の軸方向の移動を抑止する保持部材２と、保持部材２を車軸４に締結するネジ３とを有する。図１に示すように、保持部材２は複数のネジ３により車軸４に締結されて、軸受７の内輪を固定する。
FIG. 1 shows an example of a wheel holding mechanism 1 that holds wheels 5 rotatably. The wheel holding mechanism 1 includes two bearings 6 and 7 that support a wheel 5, an axle 4 that holds the two bearings, a holding member 2 that suppresses axial movement of the bearing 7, and the holding member 2 on the axle 4. It has a screw 3 to fasten to. As shown in FIG. 1, the holding member 2 is fastened to the axle 4 by a plurality of screws 3 to fix the inner ring of the bearing 7 .
しかしながら車輪５の径が小さい場合、２つの軸受６、７を保持する車軸４の径も小さくなるため、複数のネジ３を用いて保持部材２を車軸４に締結することが困難となる。ネジ径をＤ[mm]とすると、２本のネジ３を用いて締結するためには、車軸４は少なくとも４Ｄ[mm]以上の径を有する必要がある。市販されているネジの最小径は１mmであるが、車軸４の径が４mm未満の場合、市販のネジで保持部材２を車軸４に締結することはできない。
However, when the diameter of the wheel 5 is small, the diameter of the axle 4 that holds the two bearings 6 and 7 is also small, making it difficult to fasten the holding member 2 to the axle 4 using multiple screws 3 . Assuming that the screw diameter is D [mm], the axle 4 must have a diameter of at least 4D [mm] or more in order to fasten using two screws 3 . The minimum diameter of commercially available screws is 1 mm, but if the diameter of the axle 4 is less than 4 mm, the holding member 2 cannot be fastened to the axle 4 with commercially available screws.
そこで本発明は、車輪径が小さい場合であっても、車輪を回転可能に支持することのできる機構を提供することを目的とする。
Therefore, an object of the present invention is to provide a mechanism that can rotatably support a wheel even if the wheel diameter is small.
上記課題を解決するために、本発明のある態様は、中心軸に沿って延びる第１軸部と、中心軸に沿って第１軸部とは反対方向に延びる第２軸部とを備える車輪を、回転可能に保持する車輪保持機構であって、第１軸部を回転可能に支持する第１軸受と、第１軸受を保持する第１保持部を有する第１車体部品と、第２軸部を回転可能に支持する第２軸受と、第２軸受を保持する第２保持部を有する第２車体部品とを備える。
In order to solve the above problems, one aspect of the present invention provides a wheel including a first shaft portion extending along a central axis and a second shaft portion extending along the central axis in a direction opposite to the first shaft portion. A wheel holding mechanism that rotatably holds a first shaft portion, a first bearing that rotatably supports a first shaft portion, a first vehicle body component that has a first holding portion that holds the first bearing, and a second shaft and a second vehicle body component having a second holding portion holding the second bearing.
本発明の別の態様は、回転可能に車体に保持される車輪であって、中心軸に沿って延びる第１軸部であって、第１軸受により回転可能に支持される第１軸部と、中心軸に沿って第１軸部とは反対方向に延びる第２軸部であって、第２軸受により回転可能に支持される第２軸部とを備える。
Another aspect of the present invention is a wheel rotatably held by a vehicle body, wherein a first shaft extends along a central axis and is rotatably supported by a first bearing. , a second shaft portion extending in a direction opposite to the first shaft portion along the central axis, the second shaft portion being rotatably supported by the second bearing.
図２は、実施例の車輪１１の内部構造を示す。車輪１１は、中心軸に沿って車輪内側から車輪外側に向かう方向に延びる第１軸部３０と、中心軸に沿って車輪内側から車輪外側に向かう方向に延びる第２軸部３１とを備える。車輪１１が車体に取り付けられるとき、第１軸部３０および第２軸部３１は、それぞれ軸受により回転可能に支持される。
FIG. 2 shows the internal structure of the wheel 11 of the embodiment. The wheel 11 includes a first shaft portion 30 extending from the inside to the outside of the wheel along the center axis, and a second shaft portion 31 extending from the inside to the outside of the wheel along the center axis. When the wheel 11 is attached to the vehicle body, the first shaft portion 30 and the second shaft portion 31 are rotatably supported by bearings.
第１軸部３０と第２軸部３１とは、延びる方向を互いに逆向きとし、つまり第２軸部３１は、第１軸部３０とは反対方向に延びている。第１軸部３０および第２軸部３１は、車輪１１の内部に収まるように形成されることが好ましい。車輪１１が車体に取り付けられる際、第１軸部３０が設けられている側の面が、車体に相対的に近い内側面３２となり、第２軸部３１が設けられている側の面が、車体から相対的に離れた外側面３３となる。
The first shaft portion 30 and the second shaft portion 31 extend in opposite directions, that is, the second shaft portion 31 extends in the opposite direction to the first shaft portion 30 . The first shaft portion 30 and the second shaft portion 31 are preferably formed so as to fit inside the wheel 11 . When the wheel 11 is attached to the vehicle body, the surface on the side where the first shaft portion 30 is provided becomes the inner surface 32 relatively close to the vehicle body, and the surface on the side where the second shaft portion 31 is provided is It becomes the outer surface 33 which is relatively separated from the vehicle body.
実施例において第１軸部３０は中実軸部として構成され、第２軸部３１は中空軸部として構成されている。別の例では、第１軸部３０が中空軸部として構成され、第２軸部３１が中実軸部として構成されてもよい。また第１軸部３０および第２軸部３１がともに中実軸部であってよく、またはともに中空軸部であってもよい。いずれにしても、第１軸部３０および第２軸部３１は、内側面３２と外側面３３で挟まれる車輪内部に形成されて、車輪１１の小型化が実現されることが好ましい。
In the embodiment, the first shaft portion 30 is configured as a solid shaft portion, and the second shaft portion 31 is configured as a hollow shaft portion. In another example, the first shaft portion 30 may be configured as a hollow shaft portion and the second shaft portion 31 may be configured as a solid shaft portion. Also, both the first shaft portion 30 and the second shaft portion 31 may be solid shaft portions, or both may be hollow shaft portions. In any case, it is preferable that the first shaft portion 30 and the second shaft portion 31 are formed inside the wheel sandwiched between the inner side surface 32 and the outer side surface 33 so that the size reduction of the wheel 11 is realized.
図３は、車輪１１を回転可能に保持する車輪保持機構１０の断面図を示す。車輪保持機構１０は、車輪１１を回転可能に支持する車体側の部品を備え、具体的には、第１車体部品１２および第２車体部品２０と、第１軸受１４および第２軸受１５とを備える。第１軸受１４は、車輪１１の第１軸部３０を回転可能に支持し、第２軸受１５は、車輪１１の第２軸部３１を回転可能に支持する。第２軸受１５は、車体に対して第１軸受１４よりも外側に配置される。第１車体部品１２は、第１軸受１４を保持する第１保持部１３を有し、第２車体部品２０は、第２軸受１５を保持する第２保持部２１を有する。
FIG. 3 shows a cross-sectional view of the wheel holding mechanism 10 that rotatably holds the wheel 11. FIG. The wheel holding mechanism 10 includes parts on the vehicle body side that rotatably support the wheel 11. Specifically, the wheel holding mechanism 10 includes a first vehicle body part 12 and a second vehicle body part 20, and a first bearing 14 and a second bearing 15. Prepare. The first bearing 14 rotatably supports the first shaft portion 30 of the wheel 11 , and the second bearing 15 rotatably supports the second shaft portion 31 of the wheel 11 . The second bearing 15 is arranged outside the first bearing 14 with respect to the vehicle body. The first vehicle body part 12 has a first holding part 13 that holds the first bearing 14 , and the second vehicle body part 20 has a second holding part 21 that holds the second bearing 15 .
第１保持部１３は断面を円形とする凹部１６を有して、当該凹部１６に第１軸受１４の外輪をはめ込むことで、第１軸受１４を保持する。なお第１軸部３０が中空軸部として構成されている場合、第１保持部１３は断面を円形とする凸部を有して、当該凸部に第１軸受１４の内輪をはめ込むことで、第１軸受１４を保持する。
The first holding portion 13 has a recess 16 with a circular cross section, and the first bearing 14 is held by fitting the outer ring of the first bearing 14 into the recess 16 . When the first shaft portion 30 is configured as a hollow shaft portion, the first holding portion 13 has a convex portion with a circular cross section, and by fitting the inner ring of the first bearing 14 into the convex portion, It holds the first bearing 14 .
第２保持部２１は断面を円形とする凸部２４を有して、当該凸部２４に第２軸受１５の内輪をはめ込むことで、第２軸受１５を保持する。なお第２軸部３１が中実軸部として構成されている場合、第２保持部２１は断面を円形とする凹部を有して、当該凹部に第２軸受１５の外輪をはめ込むことで、第２軸受１５を保持する。
The second holding part 21 has a convex part 24 with a circular cross section, and the inner ring of the second bearing 15 is fitted into the convex part 24 to hold the second bearing 15 . When the second shaft portion 31 is configured as a solid shaft portion, the second holding portion 21 has a recess with a circular cross section, and by fitting the outer ring of the second bearing 15 into the recess, the 2 holding the bearing 15;
第２車体部品２０は板金部品であり、固定部２３により第１車体部品１２に固定されて、第２軸受１５の軸方向の移動を抑止する。車輪保持機構１０においては、第２軸受１５の保持にネジを用いないため、たとえば第２軸受１５の内径が４mm未満であっても、問題なく第２軸受１５を保持できる。
The second vehicle body part 20 is a sheet metal part, and is fixed to the first vehicle body part 12 by a fixing portion 23 to restrain axial movement of the second bearing 15 . Since the wheel holding mechanism 10 does not use a screw to hold the second bearing 15, the second bearing 15 can be held without problems even if the inner diameter of the second bearing 15 is less than 4 mm.
第２車体部品２０は、車輪１１の外側面３３を覆うカバー部材２２を有し、カバー部材２２は車輪１１を外部から保護する役割をもつ。カバー部材２２は、車輪１１の外側面３３の上から半分以上を覆って、車輪１１の大部分を保護することが好ましい。
The second vehicle body part 20 has a cover member 22 that covers the outer surface 33 of the wheel 11, and the cover member 22 has a role of protecting the wheel 11 from the outside. The cover member 22 preferably covers more than half of the outer surface 33 of the wheel 11 to protect most of the wheel 11 .
図示されるように、第２保持部２１は、カバー部材２２の内側に設けられ、第２保持部２１の凸部２４が、カバー部材２２から車体に接近する向きに突出して、第２軸受１５の内輪にはめ込まれる。カバー部材２２を薄板の板金で形成することで、車輪１１の外側面３３からカバー部材２２の外表面までの距離を短くでき、車輪保持機構１０の小型化を実現できる。
As shown in the figure, the second holding portion 21 is provided inside the cover member 22 , and the convex portion 24 of the second holding portion 21 protrudes from the cover member 22 in a direction approaching the vehicle body, and the second bearing 15 is fitted in the inner ring of By forming the cover member 22 with a thin sheet metal, the distance from the outer surface 33 of the wheel 11 to the outer surface of the cover member 22 can be shortened, and the size reduction of the wheel holding mechanism 10 can be realized.
なお図３に示す例では、第２車体部品２０が、第１車体部品１２に固定された薄板状の板金部品であるが、たとえば車体の外装の一部を構成する部品であってもよい。
In the example shown in FIG. 3, the second vehicle body part 20 is a thin plate-shaped sheet metal part fixed to the first vehicle body part 12, but it may be a part that forms part of the exterior of the vehicle body, for example.
図４は、変形例の車輪保持機構１０ａの斜視図を示す。第１車体部品１２には、車輪１１ａを回転駆動するためのアクチュエータ４０が設けられる。カバー部材２２は、車輪１１ａの大部分を覆って、外部から保護する。車輪保持機構１０ａにおいて、第２車体部品２０は、固定部２３により第１車体部品１２に固定された板金部品であるが、上記したように、車体の外装の一部を構成する部品であってもよい。
FIG. 4 shows a perspective view of a modified wheel holding mechanism 10a. The first vehicle body part 12 is provided with an actuator 40 for rotationally driving the wheel 11a. The cover member 22 covers most of the wheel 11a and protects it from the outside. In the wheel holding mechanism 10a, the second vehicle body part 20 is a sheet metal part fixed to the first vehicle body part 12 by the fixing part 23. good too.
図５および図６は、変形例の車輪保持機構１０ａの構成部品の分解斜視図を示す。車輪１１ａは、中心軸に沿って延びる第１軸部３０と、中心軸に沿って第１軸部３０とは反対方向に延びる第２軸部３１と、内歯車３５とを備える。第１軸受１４は、第１軸部３０を回転可能に支持し、第２軸受１５は、第２軸部３１を回転可能に支持する。第１車体部品１２において、第１保持部１３は第１軸受１４の外輪を保持し、第２車体部品２０において、第２保持部２１は第２軸受１５の内輪を保持する。
5 and 6 show exploded perspective views of components of a modified wheel holding mechanism 10a. The wheel 11 a includes a first shaft portion 30 extending along the central axis, a second shaft portion 31 extending along the central axis in the direction opposite to the first shaft portion 30 , and an internal gear 35 . The first bearing 14 rotatably supports the first shaft portion 30 and the second bearing 15 rotatably supports the second shaft portion 31 . In the first vehicle body component 12 , the first holding portion 13 holds the outer ring of the first bearing 14 , and in the second vehicle body component 20 , the second holding portion 21 holds the inner ring of the second bearing 15 .
第１車体部品１２と車輪１１ａとが組み付けられると、第１車体部品１２側の外歯車４１が、車輪１１ａに設けられた内歯車３５と噛合する。アクチュエータ４０は、電動モータであって、出力軸に連結された外歯車４１を回転駆動する。このように車輪１１ａが内歯車３５を備え、アクチュエータ４０の回転トルクを、外歯車４１から内歯車３５に伝達することで、トルク伝達機構の軸方向の厚みを小さくできる利点がある。
When the first vehicle body part 12 and the wheel 11a are assembled, the external gear 41 on the side of the first vehicle body part 12 meshes with the internal gear 35 provided on the wheel 11a. The actuator 40 is an electric motor, and rotates an external gear 41 connected to an output shaft. Since the wheel 11a has the internal gear 35 and the rotational torque of the actuator 40 is transmitted from the external gear 41 to the internal gear 35, there is an advantage that the axial thickness of the torque transmission mechanism can be reduced.
以上、本発明を実施例をもとに説明した。上記実施例は例示であり、それらの各構成要素や各処理プロセスの組合せにいろいろな変形例が可能なこと、またそうした変形例も本発明の範囲にあることは当業者に理解されるところである。
The present invention has been described above based on the examples. It should be understood by those skilled in the art that the above embodiments are examples, and that various modifications can be made to combinations of each component and each treatment process, and such modifications are within the scope of the present invention. .
本発明は、車輪および車輪を保持する機構に利用できる。
The present invention can be used for wheels and mechanisms for holding wheels.
１０，１０ａ・・・車輪保持機構、１１，１１ａ・・・車輪、１２・・・第１車体部品、１３・・・第１保持部、１４・・・第１軸受、１５・・・第２軸受、１６・・・凹部、２０・・・第２車体部品、２１・・・第２保持部、２２・・・カバー部材、２３・・・固定部、２４・・・凸部、３０・・・第１軸部、３１・・・第２軸部、３２・・・内側面、３３・・・外側面、３５・・・内歯車、４０・・・アクチュエータ、４１・・・外歯車。
10, 10a... wheel holding mechanism, 11, 11a... wheel, 12... first vehicle body part, 13... first holding portion, 14... first bearing, 15... second Bearing 16... Concave part 20... Second vehicle body part 21... Second holding part 22... Cover member 23... Fixed part 24... Convex part 30... - 1st axial part, 31... 2nd axial part, 32... Inner surface, 33... Outer surface, 35... Internal gear, 40... Actuator, 41... External gear.
Claims (9)
- 中心軸に沿って延びる第１軸部と、中心軸に沿って前記第１軸部とは反対方向に延びる第２軸部とを備える車輪を、回転可能に保持する車輪保持機構であって、
前記第１軸部を回転可能に支持する第１軸受と、
前記第１軸受を保持する第１保持部を有する第１車体部品と、
前記第２軸部を回転可能に支持する第２軸受と、
前記第２軸受を保持する第２保持部を有する第２車体部品と、
を備えることを特徴とする車輪保持機構。 A wheel holding mechanism for rotatably holding a wheel comprising a first shaft portion extending along a central axis and a second shaft portion extending along the central axis in a direction opposite to the first shaft portion,
a first bearing that rotatably supports the first shaft;
a first vehicle body component having a first holding portion that holds the first bearing;
a second bearing that rotatably supports the second shaft;
a second vehicle body component having a second holding portion that holds the second bearing;
A wheel holding mechanism comprising: - 前記第２保持部は、車体に対して前記第１軸受より外側に配置される前記第２軸受を保持し、
前記第２車体部品は、前記車輪の外側面を覆うカバー部材を有する、
ことを特徴とする請求項１に記載の車輪保持機構。 The second holding portion holds the second bearing arranged outside the first bearing with respect to the vehicle body,
The second vehicle body part has a cover member that covers the outer surface of the wheel,
The wheel holding mechanism according to claim 1, characterized in that: - 前記第２保持部は、前記カバー部材から車体に接近する向きに突出する凸部を有する、
ことを特徴とする請求項２に記載の車輪保持機構。 The second holding part has a convex part that protrudes from the cover member in a direction approaching the vehicle body,
The wheel holding mechanism according to claim 2, characterized in that: - 前記第２車体部品は、前記第１車体部品に固定された板金部品である、
ことを特徴とする請求項２または３に記載の車輪保持機構。 The second body part is a sheet metal part fixed to the first body part,
The wheel holding mechanism according to claim 2 or 3, characterized in that: - 前記第２車体部品は、車体の外装の一部を構成する、
ことを特徴とする請求項２または３に記載の車輪保持機構。 The second vehicle body component constitutes a part of the exterior of the vehicle body,
The wheel holding mechanism according to claim 2 or 3, characterized in that: - 前記車輪は、内歯車を備え、
前記第１車体部品は、前記内歯車と噛合する外歯車を駆動するアクチュエータを有する、
ことを特徴とする請求項１から５のいずれかに記載の車輪保持機構。 the wheel comprises an internal gear;
The first vehicle body part has an actuator that drives an external gear that meshes with the internal gear.
The wheel holding mechanism according to any one of claims 1 to 5, characterized in that: - 回転可能に車体に保持される車輪であって、
中心軸に沿って延びる第１軸部であって、第１軸受により回転可能に支持される第１軸部と、
中心軸に沿って前記第１軸部とは反対方向に延びる第２軸部であって、第２軸受により回転可能に支持される第２軸部と、
を備える車輪。 A wheel rotatably held on a vehicle body,
a first shaft portion extending along the central axis and rotatably supported by the first bearing;
a second shaft portion extending in a direction opposite to the first shaft portion along the central axis and rotatably supported by a second bearing;
wheels with - 前記第１軸部および前記第２軸部は、車輪内部に配置される、
ことを特徴とする請求項７に記載の車輪。 The first shaft and the second shaft are arranged inside the wheel,
8. Wheel according to claim 7, characterized in that: - 前記車輪は、内歯車を備える、
ことを特徴とする請求項７または８に記載の車輪。 the wheel comprises an internal gear;
9. Wheel according to claim 7 or 8, characterized in that:
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-186840 | 2021-11-17 | ||
| JP2021186840A JP2023074082A (en) | 2021-11-17 | 2021-11-17 | Wheel holding mechanism and wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023089980A1 true WO2023089980A1 (en) | 2023-05-25 |
Family
ID=86396724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/037434 WO2023089980A1 (en) | 2021-11-17 | 2022-10-06 | Wheel holding mechanism and wheel |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2023074082A (en) |
| WO (1) | WO2023089980A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187681A (en) * | 1986-02-14 | 1987-08-17 | 本田技研工業株式会社 | Scooter type car |
| JP3017749U (en) * | 1995-05-09 | 1995-11-07 | 株式会社協和 | Suitcase with wheels |
| JP2004338422A (en) * | 2003-05-12 | 2004-12-02 | Nansin Co Ltd | Wheel structure of caster |
| JP2008195366A (en) * | 2007-02-11 | 2008-08-28 | Masaharu Matsumoto | Wheel having spherical surface and resilient member and caster equipped with the wheel |
| JP2015171292A (en) * | 2014-03-10 | 2015-09-28 | 株式会社ジェイテクト | actuator |
| JP2015202709A (en) * | 2014-04-11 | 2015-11-16 | 株式会社 タイコー | Power assist unit with clutch |
-
2021
- 2021-11-17 JP JP2021186840A patent/JP2023074082A/en active Pending
-
2022
- 2022-10-06 WO PCT/JP2022/037434 patent/WO2023089980A1/en unknown
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187681A (en) * | 1986-02-14 | 1987-08-17 | 本田技研工業株式会社 | Scooter type car |
| JP3017749U (en) * | 1995-05-09 | 1995-11-07 | 株式会社協和 | Suitcase with wheels |
| JP2004338422A (en) * | 2003-05-12 | 2004-12-02 | Nansin Co Ltd | Wheel structure of caster |
| JP2008195366A (en) * | 2007-02-11 | 2008-08-28 | Masaharu Matsumoto | Wheel having spherical surface and resilient member and caster equipped with the wheel |
| JP2015171292A (en) * | 2014-03-10 | 2015-09-28 | 株式会社ジェイテクト | actuator |
| JP2015202709A (en) * | 2014-04-11 | 2015-11-16 | 株式会社 タイコー | Power assist unit with clutch |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023074082A (en) | 2023-05-29 |
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