KR200486749Y1 - Wheel device - Google Patents

Wheel device Download PDF

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Publication number
KR200486749Y1
KR200486749Y1 KR2020170005661U KR20170005661U KR200486749Y1 KR 200486749 Y1 KR200486749 Y1 KR 200486749Y1 KR 2020170005661 U KR2020170005661 U KR 2020170005661U KR 20170005661 U KR20170005661 U KR 20170005661U KR 200486749 Y1 KR200486749 Y1 KR 200486749Y1
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KR
South Korea
Prior art keywords
tooth
engaging
wheel body
disposed
wheel
Prior art date
Application number
KR2020170005661U
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Korean (ko)
Inventor
김동근
Original Assignee
(주)프로보
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Priority to KR2020170005661U priority Critical patent/KR200486749Y1/en
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Publication of KR200486749Y1 publication Critical patent/KR200486749Y1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B19/00—Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
    • B60B19/12—Roller-type wheels
    • B60B19/125—Roller-type wheels with helical projections on radial outer surface translating rotation of wheel into movement along the direction of the wheel axle

Abstract

The present invention relates to a wheel comprising a first wheel body, a body disposed opposite the first wheel body and including a second wheel body coaxially coupled to the first wheel body, And a plurality of rolls rotatably coupled to the first support portion and rotatably coupled to the second support portion of the second wheel body on the other side and disposed along the periphery of the body, A first coupling portion extending from the first wheel body and a second coupling portion extending from the second wheel body, wherein the first coupling portion and the second coupling portion are located between the first supporting portion and the second supporting portion, So that the position of the wheel is different in the circumferential direction of the body.

Description

Wheel device

An embodiment relates to a wheel device.

The mechanical handwheel is a wheel capable of moving in all directions. Korean Patent No. 10-01307990 (issued on September 20, 2013) discloses a mechanike wheel. The mechanical hookwheel has a body and a plurality of rolls arranged on the body. The mechanical hookwheel is a wheel capable of three degrees of freedom movement of forward and backward movement, leftward and rightward movement and rotational motion including rotation of the body, rotation of the roll, and rotation about a vertical axis passing through a contact point with the ground.

The mechanical hookwheel has a plurality of rolls arranged along the circumference of the body, and the rolls are arranged obliquely. Then, the roll is rotatably disposed on the body. The body may comprise a plurality of parts. The plurality of parts are coupled to each other with separate fastening members. At this time, since the rolls are disposed at an inclined position, the positions of the parts to which the rolls are coupled differ from part to part, so that it is difficult to attach the rolls, and thus the assemblability of the rolls is deteriorated. Further, when the fastening member is coupled to the part of the body, the body is deformed.

Korean Registered Patent No. 10-01307990 (Announced 2013.09.06)

Accordingly, an object of the present invention is to provide a wheel device capable of reducing the number of parts of a body of a wheel device and improving assembling performance.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned here can be understood by those skilled in the art from the following description.

An embodiment includes a body including a first wheel body, a second wheel body disposed opposite the first wheel body and coaxially coupled to the first wheel body, and a second wheel body disposed on one side of the first wheel body, And a plurality of rolls rotatably coupled to the first support portion and rotatably coupled to the second support portion of the second wheel body on the other side and disposed along the periphery of the body, A first coupling portion extending from the first wheel body and a second coupling portion extending from the second wheel body, wherein the first coupling portion and the second coupling portion are located between the first supporting portion and the second supporting portion, So that the position of the wheel is different in the circumferential direction of the body.

Preferably, the first engagement portion includes a first body having a cylindrical shape, and a plurality of first teeth disposed at a predetermined interval in the first body, wherein the second engagement portion includes a cylindrical second body, And a second tooth disposed at a predetermined interval in the body, wherein the first tooth and the second tooth can be engaged with each other.

Preferably, the first engaging portion includes a first engaging protrusion protruding from the inner surface of the first tooth, and a second engaging protrusion protruding from the inner surface of the first tooth and extending between the first tooth and the first tooth, A second engaging protrusion protruding from an inner surface of the second tooth and extending between the second tooth and the second tooth, the second engaging protrusion protruding from the inner surface of the second tooth, Wherein the first locking projection and the second step contact each other, and the second locking projection and the first step can contact each other.

Preferably, when the first tooth and the second tooth engage, the first step and the second step can contact each other.

Preferably, the first tooth includes a first engaging projection and a first engaging groove, and the first engaging projection is disposed to protrude from an end of the first tooth, and the first engaging groove is engaged with the first tooth, Wherein the second tooth includes a second engaging projection and a second engaging groove and the second engaging projection is protruded from an end of the second tooth, And the second engaging groove is recessed in a slot disposed between the second tooth and the second tooth so that the first engaging projection can engage with the first engaging groove.

Preferably, the second step portions disposed respectively in the adjacent second teeth may be disposed apart from each other.

Preferably, the first wheel body includes a shaft coupling portion disposed at a central portion thereof, and a coupling hole disposed circumferentially around the shaft coupling portion.

Preferably, a reinforcing rib may be disposed at a boundary between the first wheel body and the first engaging portion and at a boundary between the second wheel body and the second engaging portion.

According to the embodiment, there is an advantageous effect of reducing the number of parts of the wheel device.

According to the embodiment, an advantageous effect of increasing the assemblability of the wheel device is provided.

According to the embodiment, there is provided an advantageous effect of preventing the wheel device from being deformed in the assembling process

1 is a view showing a wheel device according to an embodiment,
Fig. 2 is an exploded view of the wheel device shown in Fig. 1,
3 shows a first wheel body, a first body and a first tooth,
Fig. 4 is a plan view of the first wheel body shown in Fig. 3,
5 shows a second wheel body, a second body and a second tooth,
Fig. 6 is a plan view of the second wheel body shown in Fig. 5,
7 is a view showing a position of a first support portion and a position of a second support portion,
8 is a view illustrating a state in which the first wheel body and the second wheel body are aligned,
9 is a view showing a state where the first engaging part and the second engaging part are engaged,
Fig. 10 is an enlarged view of Fig. 9A,
Fig. 11 is an enlarged view of Fig. 9B,
12 is a view showing a state in which a roll is engaged with a body,
13 is an enlarged view of C in Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The objectives, specific advantages, and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. The terms and words used in the present specification and utility model registration claims should not be construed to be limited to ordinary or dictionary meanings, and the inventor shall design the concept of the term appropriately in order to describe its own design in the best way. It should be interpreted as a meaning and a concept consistent with the technical idea of the present invention. In the following description of the present invention, detailed description of related arts which may unnecessarily obscure the gist of the present invention will be omitted.

The terms including ordinal, such as second, first, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the second component can be named as the first component, and similarly, the first component can also be named as the second component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

FIG. 1 is a view showing a wheel device according to an embodiment, and FIG. 2 is an exploded view of the wheel device shown in FIG. 1. FIG.

Referring to FIGS. 1 and 2, a wheel device according to an embodiment may include a body 10 and a plurality of rolls 20. The body 10 may include a first wheel body 100, a first engaging portion 200, a second wheel body 300, and a second engaging portion 400. The first wheel body 100 and the second wheel body 300 are disposed to face each other. The first wheel body 100 and the second wheel body 300 coaxially engage with each other. The roll 20 is disposed between the first wheel body 100 and the second wheel body 300. The first wheel body 100 and the second wheel body 300 are detachably coupled to each other by the first coupling portion 200 and the second coupling portion 400. One side of the roll 20 is rotatably coupled to the first wheel body 100. And the other side of the roll 20 rotatably engages the second wheel body 300.

3 is a view showing a first wheel body, a first body, and a first tooth.

Referring to FIG. 3, the body 10 may include a first wheel body 100 and a first coupling portion 200. The first wheel body 100 and the first engaging portion 200 are a single member that is injection-molded and integrally molded, which can be separately described by its function and shape.

The first wheel body 100 includes a disc-shaped body 110 and may include a plurality of arm portions 120 in the radial direction with respect to the center of the body 110. The first support part 130 may be disposed on the arm part 120. One side of the roll (20 in FIG. 2) is rotatably supported on the first support portion 130. The arm 120 may be inclined with respect to the radial direction of the body 110. The arm portion 120 may be inclined with respect to the coaxial (C) direction of the first wheel body 100. The arm portion 120 can be arranged to be elastically deformable.

The first coupling portion 200 serves to couple the first wheel body 100 and the second wheel body 300 together. The first coupling part 200 may include a first body 210, a first tooth 220, a first locking protrusion 230, and a first step 230.

The first body 210 may be a cylindrical member extending from the first wheel body 100. The first body 210 secures a space in which the roll 20 is mounted.

The first tooth 220 may be disposed on the first body 210. The plurality of first teeth 220 may be arranged in a manner such that a concave shape and a convex shape are repeated at regular intervals along the circumference of the first body 210. The first tooth 220 may include a first coupling protrusion 221 at an end thereof. A slot 222 is disposed between the first tooth 220 and the first tooth 220. The first engagement groove 223 may be disposed on the end surface of the slot 222. The first coupling protrusions 221 and the first coupling grooves 223 serve to increase the assembling property and the coupling force of the first coupling portion 200 and the second coupling portion 400.

The first engaging protrusion 230 serves to fix the first engaging portion 200 and the second engaging portion 400 so that they do not separate from each other after being combined. The first stopping protrusion 230 may protrude from the inner surface of the first tooth 220.

The first step jaws 240 provide abutting contact surfaces for engaging the first engaging portion 200 and the second engaging portion 400. The first step 240 may protrude from the inner surface of the first tooth 220 and extend between the first tooth 220 and the first tooth 220.

The reinforcing rib 250 may be disposed at a boundary between the first wheel body 100 and the first body 210. The reinforcing ribs 250 may be disposed at predetermined intervals along the circumference of the first body 210. The reinforcing rib 250 serves to prevent the first wheel body 100 from being deformed or damaged under the condition that the arm portion 120 is elastically deformed.

4 is a plan view of the first wheel body shown in Fig.

Referring to FIG. 4, the first wheel body 100 may include an axial coupling portion 140 at a central portion thereof. The shaft coupling portion 140 is coupled to the shaft of the wheel device. In addition, the first wheel body 100 may have a plurality of coupling holes 150 disposed therein. The coupling holes 150 may be disposed at predetermined intervals along the circumferential direction about the shaft coupling portion 140. The engaging holes 150 are arranged to pass through the inner and outer sides of the first wheel body 100.

5 is a view showing a second wheel body, a second body, and a second tooth.

Referring to FIG. 5, the body 10 may include a second wheel body 300 and a second coupling portion 400. The second wheel body 300 and the second engaging part 400 can be separately described by their function and shape and are a single member that is injection molded and integrally molded.

The second wheel body 300 includes a rim-shaped body 310 and may include a plurality of arm portions 320 in the radial direction with respect to the center of the body 310. The second support portion 330 may be disposed on the arm portion 320. The other side of the roll (20 in Fig. 2) is rotatably supported on the second support portion 330. Fig. The arm portion 320 may be inclined with respect to the radial direction of the body 310. The arm portion 320 may be inclined with respect to the axial direction of the second wheel body 300. The arm portion 320 may be arranged to be elastically deformable.

The second coupling portion 400 serves to couple the first wheel body 100 and the second wheel body 300 together. The second coupling portion 400 may include a second body 410, a second tooth 420, a first locking protrusion 430, and a second step portion 440.

The second body 410 may be a cylindrical member extending from the second wheel body 300. The second body 410 secures a space in which the roll 20 is mounted.

The second tooth 420 may be disposed on the second body 410. The plurality of second teeth 420 may be arranged in a manner that a concave shape and a convex shape are repeated at regular intervals along the circumference of the second body 410. The second tooth 420 may include a second coupling protrusion 421 at an end thereof. A slot 422 is disposed between the second tooth 420 and the second tooth 420. The second engaging groove 423 may be disposed on an end surface of the slot 422. The second engaging projections 421 and the second engaging grooves 423 serve to increase the assemblability and the bonding force between the first engaging part 100 and the second engaging part 400. [

The second engaging protrusion 430 serves to fix the first engaging part 200 and the second engaging part 400 so that they do not separate from each other after being coupled. The second stopper protrusion 430 may protrude from the inner surface of the second tooth 420. The second stitching protrusion 430 is engaged with the first step portion 240.

The second step portion 440 provides a contact surface with which the first engagement portion 200 and the second engagement portion 400 abut against each other. The second step portion 440 is a place where the first stopping protrusion 230 of the first toot 220 is caught. The second step portion 440 may protrude from the inner surface of the second tooth 420 and extend between the second tooth 420 and the second tooth 420. The second step jaw 440 may have a central portion that is separated from the first jaw protrusion 230 so as to be easily engaged with the first jaw protrusion 230.

Meanwhile, the reinforcing rib 450 may be disposed at a boundary between the second wheel body 300 and the second body 420. The reinforcing ribs 450 may be disposed at regular intervals along the circumference of the second body 420. The reinforcing ribs 450 prevent the second wheel body 300 from being deformed or damaged under the condition that the arm portions 320 are elastically deformed.

6 is a plan view of the second wheel body shown in Fig.

Referring to FIG. 6, the center of the second wheel body 300 may be an empty space S, unlike the first wheel body 100.

FIG. 7 is a view showing the position of the first support portion and the position of the second support portion, and FIG. 8 is a view showing a state in which the first wheel body and the second wheel body are aligned.

Referring to Fig. 7, the roll (20 in Fig. 2) is arranged at an angle. That is, the circumferential position of the first support part 130, on which the one roll 20 is rotatably supported, is different from the circumferential position of the second support part 330 with respect to the coaxial part C. More specifically, the second support portion 330 may be disposed at a position shifted by L in FIG. 7 from the first support portion 130 in the circumferential direction with respect to the coaxial line C. The radius R1 up to the first support portion 130 and the radius R2 up to the second support portion 330 on the basis of the coaxial axis C may be the same with respect to the coaxial axis C. [

7 and 8, the first engaging portion 200 and the second engaging portion 400 are formed such that the circumferential position of the first supporting portion 130 is different from the circumferential position of the second supporting portion 330 To be detachably coupled to each other. The first wheel body 100 and the first coupling portion 200 may be single pieces and the second wheel body 300 and the second coupling portion 400 may be different single pieces. The first tooth 220 is inserted into the slot 422 and the second tooth 420 is inserted into the slot 222 in the coupling process of the first coupling portion 200 and the second coupling portion 400, 1 position in the circumferential direction of the support portion 130 is different from the circumferential position of the second support portion 330. [

9 is a view showing a state where the first engaging part and the second engaging part are engaged.

Referring to FIG. 9, the first tooth 220 and the second tooth 420 are engaged with each other. Accordingly, the first wheel body 100 and the second wheel body 300 are engaged without a separate fastening member. The first tooth 220 and the second tooth 420 are coupled to each other with respect to the rotation direction R of the wheel device. Particularly, since the contact area between the first tooth 220 and the second tooth 420 is large on the basis of the direction of the coaxial C, the first wheel body 100 and the second wheel 420, There is an advantage that the body 300 is firmly coupled.

10 is an enlarged view of FIG. 9A.

9 and 10, when the first tooth 220 and the second tooth 420 are engaged and engaged, the first locking protrusion 230 is caught by the second step portion 440. The first tooth protrusion 230 is prevented from being separated from the second tooth 420 based on the coaxial direction C when the first tooth protrusion 230 is caught by the second step portion 440. [ When the first and second teeth 220 and 420 are engaged with each other, the first step portion 240 and the second step portion 440 are in contact with each other. Further, the first engaging projection 221 is inserted into the second engaging groove 423.

11 is an enlarged view of FIG. 9B.

9 and 11, when the first tooth 220 and the second tooth 420 are engaged with each other, the second locking protrusion 430 is caught by the first step portion 240. When the second stopper protrusion 430 is caught by the first stop protrusion 240, the first toot 220 and the second toot 420 are prevented from being separated from each other with reference to the direction of the coaxial (C) direction.

12 is a view showing a state in which a roll is engaged with a body.

9 and 12, the roll 20 is engaged in a state where the first engaging portion 200 and the second engaging portion 400 are engaged. One side of the roll 20 is rotatably coupled to the first support 130. The other side of the roll 20 is rotatably coupled to the second support portion 330. The roll 20 is temporarily fixed to the first wheel body 100 or the second wheel body 300 while the first and second coupling portions 200 and 400 are joined together, 20 to improve the assemblability. The first and second teeth 220 and 420 are engaged with each other in the first coupling part 200 and the second coupling part 400. The second coupling protrusion 430 is engaged with the first coupling part 400, And the first latching protrusion 130 is not caught by the second stepped portion 440. As shown in FIG.

13 is an enlarged view of C in Fig.

Referring to FIG. 13, the first support portion 130 and the second support portion 330 may include holes 131 and 331 and insertion guide portions 132 and 332, respectively. The holes 131 and 331 may be disposed such that the sides of the arm portions 120 and 320 are penetrated. The shaft (21) of the roll (20) is disposed in the holes (131, 331). The insertion guide portions 132 and 333 are disposed adjacent to the holes 131 and 331 and are sloped in a concave shape in which the side and top surfaces of the arm portions 120 and 320 are cut so that the shaft portion 21 of the roll 20 can be easily inserted into the holes 131 and 331 To be inserted.

As described above, the wheel device according to one preferred embodiment of the present invention has been specifically described with reference to the accompanying drawings.

It is to be understood that one embodiment of the invention described above is to be considered in all respects only as illustrative and not restrictive and the scope of the present invention will be indicated by the appended claims rather than the foregoing detailed description. It is intended that all changes and modifications that come within the meaning and range of equivalency of the appended claims are intended to be included within the scope of the appended claims.

10: Body
20: roll
100: first wheel body
200: first coupling portion
210: first body
220: First Tooth
230: first stopping projection
240: first stage jaw
300: second wheel body
400: second coupling portion
410: second body
420: Second tooth
430: the second obstacle
440: second stage jaw

Claims (8)

A body including a first wheel body, a second wheel body disposed opposite the first wheel body and coaxially coupled to the first wheel body,
One of which is rotatably coupled to the first support of the first wheel body and the other of which is rotatably engaged with the second support of the second wheel body, Roll,
The body includes a first coupling portion extending from the first wheel body and a second coupling portion extending from the second wheel body,
Wherein the first engaging portion and the second engaging portion are detachably coupled to each other such that a position of the first supporting portion and a position of the second supporting portion are different in the circumferential direction of the body,
Wherein the first coupling portion includes a first body having a cylindrical shape and a plurality of first teeth disposed at a predetermined interval in the first body,
Wherein the second engaging portion includes a cylindrical second body and a second tooth disposed at a predetermined interval in the second body,
And the first tooth and the second tooth engage with each other. delete The method according to claim 1,
The first engaging portion includes a first engaging protrusion protruding from the inner surface of the first tooth and a first step protruding from the inner surface of the first tooth and extending between the first tooth and the first tooth, ,
The second engaging portion includes a second engaging protrusion protruding from the inner surface of the second tooth and a second step protruding from the inner surface of the second tooth and extending between the second tooth and the second tooth, ,
Wherein the first locking projection and the second step contact each other, and the second locking projection and the first step contact each other. The method of claim 3,
And the first step and the second step are in contact with each other when the first tooth and the second tooth engage with each other. The method according to claim 1,
Wherein the first tooth includes a first engaging projection and a first engaging groove,
Wherein the first engaging projection is disposed so as to protrude from an end of the first tooth, the first engaging groove is concave in a slot disposed between the first tooth and the first tooth,
The second tooth includes a second engaging projection and a second engaging groove,
And the second engaging projection is disposed so as to protrude from an end of the second toe and engage with the first engaging groove, and the second engaging groove is concavely disposed in a slot disposed between the second tooth and the second tooth And the first engaging projections engage with each other. The method of claim 3,
And the second step portions disposed respectively in the adjacent second teeth are disposed apart from each other. The method of claim 1,
Wherein the first wheel body includes a shaft coupling portion disposed at a center portion and a coupling hole disposed in a circumferential direction about the shaft coupling portion. The method according to claim 1,
Wherein a reinforcing rib is disposed at a boundary between the first wheel body and the first engaging portion and at a boundary between the second wheel body and the second engaging portion.
KR2020170005661U 2017-11-02 2017-11-02 Wheel device KR200486749Y1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018106592A1 (en) * 2018-03-21 2019-09-26 Retrofit Europa Gmbh Mecanum wheel and drive assembly with this
KR20220170004A (en) 2021-06-22 2022-12-29 주식회사 엠티솔루션 Mecanum Wheel

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Publication number Priority date Publication date Assignee Title
US7980335B2 (en) * 2009-01-26 2011-07-19 Foster-Miller, Inc. Omni-directional wheel
KR101133994B1 (en) * 2011-11-09 2012-04-05 (주)엔티렉스 Mecanum wheel
KR101307990B1 (en) 2013-07-12 2013-09-13 현대엔지니어링(주) A prefabricatd structure of mecanum wheel
JP2014526419A (en) * 2011-09-23 2014-10-06 オムニロール・アーゲー Mecanum wheel and mecanum wheel vehicle
US8960339B2 (en) * 2012-05-03 2015-02-24 Helical Robotics, Llc Mecanum wheel
CN104723791A (en) * 2015-04-08 2015-06-24 中国矿业大学 Combined Mecanum wheel hub
JP2017052417A (en) * 2015-09-10 2017-03-16 株式会社土佐電子 Combined mecanum wheel and conveyance truck
KR101789784B1 (en) * 2016-07-01 2017-10-25 주식회사 이씨엠 Electric wheelchair having mechanum wheel driven by in-wheel motor
KR101803533B1 (en) * 2016-05-25 2017-11-30 목포대학교 산학협력단 Mecanum wheels reduced vibration and the manufacture method thereof
KR101812570B1 (en) * 2016-02-19 2017-12-29 명지대학교 산학협력단 Mecanum wheel forklift and the control method

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7980335B2 (en) * 2009-01-26 2011-07-19 Foster-Miller, Inc. Omni-directional wheel
JP2014526419A (en) * 2011-09-23 2014-10-06 オムニロール・アーゲー Mecanum wheel and mecanum wheel vehicle
KR101133994B1 (en) * 2011-11-09 2012-04-05 (주)엔티렉스 Mecanum wheel
US8960339B2 (en) * 2012-05-03 2015-02-24 Helical Robotics, Llc Mecanum wheel
KR101307990B1 (en) 2013-07-12 2013-09-13 현대엔지니어링(주) A prefabricatd structure of mecanum wheel
CN104723791A (en) * 2015-04-08 2015-06-24 中国矿业大学 Combined Mecanum wheel hub
JP2017052417A (en) * 2015-09-10 2017-03-16 株式会社土佐電子 Combined mecanum wheel and conveyance truck
KR101812570B1 (en) * 2016-02-19 2017-12-29 명지대학교 산학협력단 Mecanum wheel forklift and the control method
KR101803533B1 (en) * 2016-05-25 2017-11-30 목포대학교 산학협력단 Mecanum wheels reduced vibration and the manufacture method thereof
KR101789784B1 (en) * 2016-07-01 2017-10-25 주식회사 이씨엠 Electric wheelchair having mechanum wheel driven by in-wheel motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018106592A1 (en) * 2018-03-21 2019-09-26 Retrofit Europa Gmbh Mecanum wheel and drive assembly with this
KR20220170004A (en) 2021-06-22 2022-12-29 주식회사 엠티솔루션 Mecanum Wheel

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