US20140110203A1 - Structure of case - Google Patents
Structure of case Download PDFInfo
- Publication number
- US20140110203A1 US20140110203A1 US13/654,544 US201213654544A US2014110203A1 US 20140110203 A1 US20140110203 A1 US 20140110203A1 US 201213654544 A US201213654544 A US 201213654544A US 2014110203 A1 US2014110203 A1 US 2014110203A1
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- United States
- Prior art keywords
- case body
- case
- wheel
- base
- receiving container
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C5/00—Rigid or semi-rigid luggage
- A45C5/14—Rigid or semi-rigid luggage with built-in rolling means
- A45C5/146—Rigid or semi-rigid luggage with built-in rolling means retractable
Definitions
- the present invention relates to an improved structure of case, and in particular to an improved structure of case that is capable of receiving wheels to be stowed therein.
- a conventional suitcase is often designed to carry a weight of around 20 to 30 kilograms.
- a conventionally used wheel set is generally a single wheel arrangement, which has a simple structure and is not easily replaced. After carrying an excessive weight or being set in abrasion contact with the rough ground for a long time, the wheels often get worn. Further, the wheel set is generally mounted to an outside surface of the bottom of the suitcase, so that when the suitcase is shipped, it is often subjected compression and impact that often lead to damage of the wheels, making them no longer operable.
- the primary object of the present invention is to disclose an improved structure of case, which comprises a receiving container arranged therein to receive and contain a wheel set. To move the case, the wheel set is extended from the receiving container and to place the case, the wheel set is retracted back into the receiving container, so that the drawback that the wheel set is easily damaged due to being exposed outside the case during the shipping of the case can be alleviated.
- the present invention discloses an improved structure of case, which comprises a case body, a plurality of receiving containers, a plurality of wheel sets, and a plurality of fastener assemblies.
- the case body has a top and a bottom and forms therein a receiving space adapted to receive and hold at least one article.
- the receiving containers are arranged inside the bottom of the case body and each has a top and a bottom that forms an opening.
- the wheel sets are respectively receivable in the receiving containers and each comprises an elastic element, a base, and a wheel.
- the elastic element has a first end fixed to the top of the respective receiving container and a second end fixed a top of the base.
- the wheel is fixed to a bottom of the base.
- the fastener assemblies each comprise a handle, a support section, and a stop section.
- the handle is pivotally mounted to an outside wall of the case body at a location adjacent to the bottom of the case body and corresponding to a corresponding one of the receiving containers and partially project into the corresponding receiving container.
- the support section is positionable against the bottom of the base to support the base.
- the stop section is arranged at the bottom of the case body, wherein the fastener assemblies are of a number corresponding to the number of the wheel sets and that of the receiving containers.
- the support section when the handle is moved in a direction away from the outside wall of the case body, the support section is caused to separate from the base of the wheel set to allow the wheel set to be sprung by the elastic element in a direction to extend outside the bottom of the case body until the base leans against the bottom of the corresponding receiving container and the wheel of the wheel set projects outside the bottom opening of the case body, whereby the handle is allowed to return to lean against the outside wall of the case body and the support section is allowed to return inside the corresponding receiving container of the case body to be positioned against the top of the base of the wheel set.
- the case body when the handle is moved away from the outside wall of the case body and the support section is moved from the corresponding receiving container of the case body toward the outside wall of the case body, the case body is allowed to apply an external force in a downward direction to force the wheel set to move back into the corresponding receiving container of the case body and the handle is returned back to leaning against the outside wall of the case body.
- the support section is thus returned back into the corresponding receiving container of the case body and leans against the bottom of the base of the wheel set to stow the wheel set in the corresponding receiving container of the case body.
- each of the wheel sets comprises a wheel mount, which is fixed to the bottom of the base and pivotally connected to the wheel set.
- the wheel of each of the wheel sets is rotatable in a range of 360 degrees.
- the improved structure of case further comprises a pull bar mounted to the top of the case body.
- each of the fastener assemblies received in the corresponding receiving container at a vertical position that substantially corresponds to vertical position where the base is located in the bottom of the case body when the wheel set is extended outside the case body.
- the handle, the support section, and the stop section of each of the fastener assemblies are integrated together as a unitary member.
- the elastic element comprises a spring
- FIG. 1 is a schematic view showing an improved structure of case according to the present invention
- FIG. 2 is a schematic view showing a wheel set received and stowed in the improved structure of case according to the present invention.
- FIG. 3 is a schematic view showing the wheel set extended outside the case from a receiving container of the improved structure of case according to the present invention.
- the present invention is made here to explore an improved structure of case, which comprises receiving containers for receiving wheel sets to stow therein, whereby when the case is moved, especially when the case is pushed or pulled, the wheel sets stowed in the receiving containers can be selectively extended outside the case to allow 360 degree rotation with the aid of wheels of the wheel sets and when a user wishes to place the case for the purposes of for example shipping or transportation of baggage, the wheel sets mounted to the bottom of the case can be first retracted back into and stowed in the receiving containers of the case to avoid undesired impact of the wheel sets during the transportation of the case to thereby extend the service life thereof and also to reduce the amount of space needed between adjacent cases.
- the improved structure of case according to the present invention comprises a case body 11 , a plurality of receiving containers 20 , a plurality of wheel sets 30 , and a plurality of fastener assemblies 40 .
- the case body 11 comprises a top 112 and a bottom 114 .
- the case body 1 forms therein a receiving space 13 for accommodating articles and objects.
- the receiving containers 20 are arranged inside the bottom of the case body 11 .
- the plurality of wheel sets 30 is respectively received and stowed in the receiving containers 20 or is selectively extended outside the bottom 114 of the case body 11 to allow a user to pull or push the case body 11 to move.
- the plurality of fastener assemblies 40 is arranged adjacent to the bottom 114 of the case body 11 and is mounted to an outside surface of the case body 11 to correspond to the receiving containers 20 . Further, in an embodiment of the present invention, a portion the case body 11 that is adjacent to the bottom 114 has a reduced width that is smaller than the nominal width of the upper portion of the case body 11 for the purposes of preventing the fastener assemblies 40 that are arranged close to the bottom 114 of the case body 11 (see FIG. 2 ) from protruding beyond the nominal width of the case body 11 .
- the case body 11 is arranged to have the same width from the top 112 thereof to the bottom 114 , so that the fastener assemblies 40 mounted close to the bottom 114 of the case body 11 protrude beyond the width of the case body 11 .
- the fastener assemblies 40 are of a number corresponding to that of the receiving containers 20 and the wheel sets 30 (not clearly shown in the drawings).
- FIG. 2 is a schematic view showing the wheel sets received and stowed in the improved structure of case according to the present invention. It is noted that the following description is made on the basis of an illustration of a portion of the case for explaining the case that is capable of receiving and stowing wheel sets therein, but this partial illustration of the case should not affect the inventive idea of the present invention.
- the receiving containers 20 are arranged in the lower portion of the case body 11 at locations adjacent to the bottom 114 .
- Each of the receiving containers 20 comprises a top 202 and an opening 204 .
- the top 202 of the receiving container 20 is arranged next to the bottom (not explicitly shown) of the receiving space 13 of the case body 11 (see FIG. 1 ).
- the opening 204 of the receiving container 20 is located in the bottom 114 of the case body 11 .
- the purpose of the opening 204 is for receiving and stowing the respective wheel set 30 .
- the receiving containers 20 arranged in the case body 11 can be at least three receiving containers 20 , of which two receiving containers 20 are respectively set at two parallel opposite side walls of the case body 11 and the remaining one receiving container 20 is set at the other side wall of the case body 11 .
- the receiving containers 20 can be three receiving containers 20 , of which two receiving containers 20 are respectively set at corners of two parallel opposite sides of the bottom 114 of the case body 11 and the remaining one receiving container 20 is set at the other side wall of the case body 11 .
- the receiving containers 20 can be at least four receiving containers 20 .
- the four receiving containers 20 are respectively set at the four side walls of the case body 11 .
- the four receiving containers 20 can be alternatively set at the four corners (not explicitly shown) of the case body 11 .
- each of the wheel sets 30 comprises an elastic element 302 , a base 304 , and a wheel 306 .
- the elastic element 302 has an end that is fixed by a first fastening element 303 to the top 202 of the receiving containers 20 .
- the elastic element 302 has an opposite end that is fixed by a second fastening element 305 to a top 3042 of the base 304 .
- the wheel 306 is fixed by a third fastening element 307 to a bottom 3044 of the base 304 .
- the wheel set 30 is arranged in such a way that the wheel 30 can be sprung out of the receiving container 20 by the elastic element 302 to extend outside the bottom 114 of the case body 11 to allow the user to tow or push the case. Or, the user may apply an external force to the wheel 306 to compress the elastic element 302 so as to retract the wheel 306 back into and stowed inside the receiving container 20 .
- the elastic element 302 comprises a spring.
- the improved structure of case 1 further comprises fastener assemblies 40 .
- Each of the fastener assemblies 40 comprises a handle 402 , a support section 404 , and a stop section 406 .
- the handle 402 is pivotally mounted to an outside surface of the case body 11 at a location adjacent to the bottom 114 of the case body 11 and corresponding to the respective receiving container 20 .
- the support section 404 projects from the handle 402 and extends through an outside wall of the case body 11 to be partially received in the receiving container 20 .
- the support section 404 is arranged to lean against the bottom 3044 of the base 304 in order to support the base 304 .
- the stop section 406 is arranged on the bottom 114 of the case body 11 and a fourth fastening element 403 fixes the stop section 406 to the bottom 114 of the case body 11 .
- the support section 404 may constrain the wheel set 30 , not allowing the wheel set 30 to extend outside the bottom 114 of the case body 11 when the case body 11 is shipped or transported.
- the handle 402 , the support section 404 , and a stop section 406 of the fastener assembly 40 are integrally formed as a unitary member.
- FIG. 3 is a schematic view showing the wheel set extended outside the case from the receiving containers of the improved structure of case according to the present invention.
- the support section 404 of the fastener assembly 40 is simultaneously moved in a direction away from the case body 11 .
- the support section 404 is moved away from the receiving container 20 , whereby the support section 404 of the fastener assembly 40 is getting separated from the base 304 of the wheel set 30 to allow the base 304 and the wheel 306 to be sprung by the elastic element 302 in a direction to extend outside the bottom 114 of the case body 11 until the base 304 gets abutting against the bottom 114 of the case body 11 .
- the wheel 306 of the wheel set 30 projects outside the bottom 114 of the case body 11 and the handle 402 of the fastener assembly 40 is allowed to return to the position leaning against the outside wall of the case body 11 with the support section 404 returned back into the receiving container 20 of the case body 11 and positioned on the top 3042 of the base 304 of the wheel set 30 .
- the vertical position where the support section 404 extends through the case body 11 is substantially corresponding to the vertical height of the base 304 of the wheel set 30 so that when the elastic element 302 force the base 304 and the wheel 306 completely outside the case body 11 , the base 304 is completely accommodated in the space between the support section 404 and the bottom 114 of the case body 11 .
- the wheel set 30 is constrained from retracting back into the receiving container 20 . Under this condition, the user is allowed to use a handle bar 50 provided on the top 112 of the case body 11 to tow or push the case body 11 to move with the assistance of rolling or rotation of the wheel 306 .
- the wheel set 30 may selectively comprise a wheel mount 309 , which is pivotally mounted to the wheel 306 to allow the wheel 306 to do arbitrary 360 degree rotation or rolling with the wheel mount 309 .
- the user moves the handle 402 in a direction away from the outside wall of the case body 11 and the support section 404 is moved from inside the receiving container 20 of the case body 11 in a direction toward the outside wall of the case body 11 to separate the support section 404 from the top 3042 of the base 304 .
- An external force is applied downward from the case body 11 , whereby the wheel set 30 is caused by the external force to move toward the receiving container 20 of the case body 11 .
- the handle 402 of the fastener assembly 40 is then allowed to return to the position leaning against the outside wall of the case body 11 with the support section 404 getting back into the receiving container 20 of the case body 11 to be positioned against the bottom 3044 of the base 304 of the wheel set 30 , whereby the wheel set 30 is completely received and stowed in the receiving container 20 of the case body 11 , as shown in FIG. 2 .
- receiving containers are provided for receiving and stowing wheel sets, whereby when the case is moved, especially when case is pushed or pulled, the wheel sets stowed in the receiving containers can be selectively extended outside the case to allow 360 degree rotation with the aid of wheels of the wheel sets and when a user wishes to place the case for the purposes of for example shipping or transportation of baggage, the wheel sets mounted to the bottom of the case can be first retracted back into and stowed in the receiving containers of the case to avoid undesired impact of the wheel sets during the transportation of the case to thereby extend the service life thereof and also to reduce the amount of space needed between adjacent case.
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- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Abstract
An improved structure of case body includes receiving containers for receiving wheel sets to stow therein. When the case is moved, especially when the case is pushed or pulled, the wheel sets stowed in the receiving containers can be selectively extended outside the case to allow 360 degree rotation with the aid of wheels of the wheel sets and when a user wishes to place the case for the purposes of for example shipping or transportation of baggage, the wheel sets mounted to the bottom of the case can be first retracted back into and stowed in the receiving containers of the case to avoid undesired impact of the wheel sets during the transportation of the case to thereby extend the service life thereof and also to reduce the amount of space needed between adjacent case.
Description
- The present invention relates to an improved structure of case, and in particular to an improved structure of case that is capable of receiving wheels to be stowed therein.
- A conventional suitcase is often designed to carry a weight of around 20 to 30 kilograms. A conventionally used wheel set is generally a single wheel arrangement, which has a simple structure and is not easily replaced. After carrying an excessive weight or being set in abrasion contact with the rough ground for a long time, the wheels often get worn. Further, the wheel set is generally mounted to an outside surface of the bottom of the suitcase, so that when the suitcase is shipped, it is often subjected compression and impact that often lead to damage of the wheels, making them no longer operable.
- Thus, it is desired to have an improved structure of case that helps extending the service life of wheels of the suitcase and thus alleviates the known problem of the conventional suitcase.
- In view of the drawbacks of the known techniques, it is desired to provide an improved structure of case that is capable of receiving a wheel set to be stowed therein in order to overcome the problem. Thus, the primary object of the present invention is to disclose an improved structure of case, which comprises a receiving container arranged therein to receive and contain a wheel set. To move the case, the wheel set is extended from the receiving container and to place the case, the wheel set is retracted back into the receiving container, so that the drawback that the wheel set is easily damaged due to being exposed outside the case during the shipping of the case can be alleviated.
- According to the object of the present invention, the present invention discloses an improved structure of case, which comprises a case body, a plurality of receiving containers, a plurality of wheel sets, and a plurality of fastener assemblies. The case body has a top and a bottom and forms therein a receiving space adapted to receive and hold at least one article. The receiving containers are arranged inside the bottom of the case body and each has a top and a bottom that forms an opening. The wheel sets are respectively receivable in the receiving containers and each comprises an elastic element, a base, and a wheel. The elastic element has a first end fixed to the top of the respective receiving container and a second end fixed a top of the base. The wheel is fixed to a bottom of the base. The fastener assemblies each comprise a handle, a support section, and a stop section. The handle is pivotally mounted to an outside wall of the case body at a location adjacent to the bottom of the case body and corresponding to a corresponding one of the receiving containers and partially project into the corresponding receiving container. The support section is positionable against the bottom of the base to support the base. The stop section is arranged at the bottom of the case body, wherein the fastener assemblies are of a number corresponding to the number of the wheel sets and that of the receiving containers.
- In an embodiment of the present invention, when the handle is moved in a direction away from the outside wall of the case body, the support section is caused to separate from the base of the wheel set to allow the wheel set to be sprung by the elastic element in a direction to extend outside the bottom of the case body until the base leans against the bottom of the corresponding receiving container and the wheel of the wheel set projects outside the bottom opening of the case body, whereby the handle is allowed to return to lean against the outside wall of the case body and the support section is allowed to return inside the corresponding receiving container of the case body to be positioned against the top of the base of the wheel set.
- In an embodiment of the present invention, when the handle is moved away from the outside wall of the case body and the support section is moved from the corresponding receiving container of the case body toward the outside wall of the case body, the case body is allowed to apply an external force in a downward direction to force the wheel set to move back into the corresponding receiving container of the case body and the handle is returned back to leaning against the outside wall of the case body. The support section is thus returned back into the corresponding receiving container of the case body and leans against the bottom of the base of the wheel set to stow the wheel set in the corresponding receiving container of the case body.
- In an embodiment of the present invention, each of the wheel sets comprises a wheel mount, which is fixed to the bottom of the base and pivotally connected to the wheel set.
- In an embodiment of the present invention, the wheel of each of the wheel sets is rotatable in a range of 360 degrees.
- In an embodiment of the present invention, the improved structure of case further comprises a pull bar mounted to the top of the case body.
- In an embodiment of the present invention, wherein the support section of each of the fastener assemblies received in the corresponding receiving container at a vertical position that substantially corresponds to vertical position where the base is located in the bottom of the case body when the wheel set is extended outside the case body.
- In an embodiment of the present invention, the handle, the support section, and the stop section of each of the fastener assemblies are integrated together as a unitary member.
- In an embodiment of the present invention, wherein the elastic element comprises a spring.
- The above and other objects and advantages of the present invention can be easily appreciated through reading of the following detailed description and associated drawings of a preferred embodiment of the present invention.
- The present invention will be apparent to those skilled in the art by reading the following description of preferred embodiments thereof with reference to the drawings, in which:
-
FIG. 1 is a schematic view showing an improved structure of case according to the present invention; -
FIG. 2 is a schematic view showing a wheel set received and stowed in the improved structure of case according to the present invention; and -
FIG. 3 is a schematic view showing the wheel set extended outside the case from a receiving container of the improved structure of case according to the present invention. - The present invention is made here to explore an improved structure of case, which comprises receiving containers for receiving wheel sets to stow therein, whereby when the case is moved, especially when the case is pushed or pulled, the wheel sets stowed in the receiving containers can be selectively extended outside the case to allow 360 degree rotation with the aid of wheels of the wheel sets and when a user wishes to place the case for the purposes of for example shipping or transportation of baggage, the wheel sets mounted to the bottom of the case can be first retracted back into and stowed in the receiving containers of the case to avoid undesired impact of the wheel sets during the transportation of the case to thereby extend the service life thereof and also to reduce the amount of space needed between adjacent cases. To provide a full understanding to the present invention, detailed steps and compositions of the present invention will be given in the following description. However, certain details regarding the manufacturing process and manufacturing steps of the case and the wheel sets that are already known will be omitted to avoid imposing unnecessary limitation to the present invention. Yet, a preferred embodiment of the present invention will be described in detail and it is appreciated that, besides the details described, the present invention is also applicable to other embodiments. The present invention is not limited to any specific embodiment and the scope of the present invention is only defined by the appended claims.
- Firstly, referring to
FIG. 1 , a schematic view showing an improved structure of case according to the present invention is given. InFIG. 1 , the improved structure of case according to the present invention, generally designated at 1, comprises acase body 11, a plurality of receivingcontainers 20, a plurality ofwheel sets 30, and a plurality offastener assemblies 40. Thecase body 11 comprises atop 112 and abottom 114. Thecase body 1 forms therein a receivingspace 13 for accommodating articles and objects. The receivingcontainers 20 are arranged inside the bottom of thecase body 11. The plurality ofwheel sets 30 is respectively received and stowed in the receivingcontainers 20 or is selectively extended outside thebottom 114 of thecase body 11 to allow a user to pull or push thecase body 11 to move. The plurality offastener assemblies 40 is arranged adjacent to thebottom 114 of thecase body 11 and is mounted to an outside surface of thecase body 11 to correspond to the receivingcontainers 20. Further, in an embodiment of the present invention, a portion thecase body 11 that is adjacent to thebottom 114 has a reduced width that is smaller than the nominal width of the upper portion of thecase body 11 for the purposes of preventing thefastener assemblies 40 that are arranged close to thebottom 114 of the case body 11 (seeFIG. 2 ) from protruding beyond the nominal width of thecase body 11. In another embodiment, thecase body 11 is arranged to have the same width from thetop 112 thereof to thebottom 114, so that the fastener assemblies 40 mounted close to thebottom 114 of thecase body 11 protrude beyond the width of thecase body 11. Further, the fastener assemblies 40 are of a number corresponding to that of thereceiving containers 20 and the wheel sets 30 (not clearly shown in the drawings). - Next, reference is made to
FIG. 2 .FIG. 2 is a schematic view showing the wheel sets received and stowed in the improved structure of case according to the present invention. It is noted that the following description is made on the basis of an illustration of a portion of the case for explaining the case that is capable of receiving and stowing wheel sets therein, but this partial illustration of the case should not affect the inventive idea of the present invention. InFIG. 2 , the receivingcontainers 20 are arranged in the lower portion of thecase body 11 at locations adjacent to thebottom 114. Each of thereceiving containers 20 comprises atop 202 and anopening 204. Actually, thetop 202 of thereceiving container 20 is arranged next to the bottom (not explicitly shown) of thereceiving space 13 of the case body 11 (seeFIG. 1 ). The opening 204 of thereceiving container 20 is located in thebottom 114 of thecase body 11. The purpose of theopening 204 is for receiving and stowing the respective wheel set 30. - In an embodiment of the present invention, the receiving
containers 20 arranged in thecase body 11 can be at least three receivingcontainers 20, of which two receivingcontainers 20 are respectively set at two parallel opposite side walls of thecase body 11 and the remaining one receivingcontainer 20 is set at the other side wall of thecase body 11. In another embodiment, thereceiving containers 20 can be three receivingcontainers 20, of which two receivingcontainers 20 are respectively set at corners of two parallel opposite sides of thebottom 114 of thecase body 11 and the remaining one receivingcontainer 20 is set at the other side wall of thecase body 11. - Further, in another embodiment, the
receiving containers 20 can be at least four receivingcontainers 20. The four receivingcontainers 20 are respectively set at the four side walls of thecase body 11. Further, the four receivingcontainers 20 can be alternatively set at the four corners (not explicitly shown) of thecase body 11. - Next, with continuous reference to
FIG. 2 , each of the wheel sets 30 comprises anelastic element 302, abase 304, and awheel 306. Theelastic element 302 has an end that is fixed by afirst fastening element 303 to the top 202 of the receivingcontainers 20. Theelastic element 302 has an opposite end that is fixed by asecond fastening element 305 to a top 3042 of thebase 304. Thewheel 306 is fixed by athird fastening element 307 to abottom 3044 of thebase 304. The wheel set 30 is arranged in such a way that thewheel 30 can be sprung out of the receivingcontainer 20 by theelastic element 302 to extend outside thebottom 114 of thecase body 11 to allow the user to tow or push the case. Or, the user may apply an external force to thewheel 306 to compress theelastic element 302 so as to retract thewheel 306 back into and stowed inside the receivingcontainer 20. In an embodiment of the present invention, theelastic element 302 comprises a spring. - Again, with continuous reference to
FIG. 2 , the improved structure ofcase 1 further comprisesfastener assemblies 40. Each of thefastener assemblies 40 comprises ahandle 402, asupport section 404, and astop section 406. Thehandle 402 is pivotally mounted to an outside surface of thecase body 11 at a location adjacent to thebottom 114 of thecase body 11 and corresponding to the respective receivingcontainer 20. Thesupport section 404 projects from thehandle 402 and extends through an outside wall of thecase body 11 to be partially received in the receivingcontainer 20. Thesupport section 404 is arranged to lean against thebottom 3044 of the base 304 in order to support thebase 304. Thestop section 406 is arranged on thebottom 114 of thecase body 11 and afourth fastening element 403 fixes thestop section 406 to thebottom 114 of thecase body 11. Thus, when the wheel set 30 is received in the receivingcontainer 20, thesupport section 404 may constrain the wheel set 30, not allowing the wheel set 30 to extend outside thebottom 114 of thecase body 11 when thecase body 11 is shipped or transported. In an embodiment of the present invention, thehandle 402, thesupport section 404, and astop section 406 of thefastener assembly 40 are integrally formed as a unitary member. - Next, reference is made to
FIG. 3 .FIG. 3 is a schematic view showing the wheel set extended outside the case from the receiving containers of the improved structure of case according to the present invention. InFIG. 3 , when the user moves thehandle 402 in a direction away from the outside wall of thecase body 11, thesupport section 404 of thefastener assembly 40 is simultaneously moved in a direction away from thecase body 11. Namely, thesupport section 404 is moved away from the receivingcontainer 20, whereby thesupport section 404 of thefastener assembly 40 is getting separated from thebase 304 of the wheel set 30 to allow thebase 304 and thewheel 306 to be sprung by theelastic element 302 in a direction to extend outside thebottom 114 of thecase body 11 until thebase 304 gets abutting against thebottom 114 of thecase body 11. Under such a condition, thewheel 306 of the wheel set 30 projects outside thebottom 114 of thecase body 11 and thehandle 402 of thefastener assembly 40 is allowed to return to the position leaning against the outside wall of thecase body 11 with thesupport section 404 returned back into the receivingcontainer 20 of thecase body 11 and positioned on the top 3042 of thebase 304 of the wheel set 30. It is noted here that the vertical position where thesupport section 404 extends through thecase body 11 is substantially corresponding to the vertical height of thebase 304 of the wheel set 30 so that when theelastic element 302 force thebase 304 and thewheel 306 completely outside thecase body 11, thebase 304 is completely accommodated in the space between thesupport section 404 and thebottom 114 of thecase body 11. Further, since thesupport section 404 is positionable on the top of thebase 304, the wheel set 30 is constrained from retracting back into the receivingcontainer 20. Under this condition, the user is allowed to use ahandle bar 50 provided on the top 112 of thecase body 11 to tow or push thecase body 11 to move with the assistance of rolling or rotation of thewheel 306. Further, the wheel set 30 may selectively comprise awheel mount 309, which is pivotally mounted to thewheel 306 to allow thewheel 306 to do arbitrary 360 degree rotation or rolling with thewheel mount 309. - Next, to stow the
wheel 306 in the receivingcontainer 20 of thecase body 11, referring simultaneously toFIGS. 2 and 3 , the user moves thehandle 402 in a direction away from the outside wall of thecase body 11 and thesupport section 404 is moved from inside the receivingcontainer 20 of thecase body 11 in a direction toward the outside wall of thecase body 11 to separate thesupport section 404 from the top 3042 of thebase 304. An external force is applied downward from thecase body 11, whereby the wheel set 30 is caused by the external force to move toward the receivingcontainer 20 of thecase body 11. Thehandle 402 of thefastener assembly 40 is then allowed to return to the position leaning against the outside wall of thecase body 11 with thesupport section 404 getting back into the receivingcontainer 20 of thecase body 11 to be positioned against thebottom 3044 of thebase 304 of the wheel set 30, whereby the wheel set 30 is completely received and stowed in the receivingcontainer 20 of thecase body 11, as shown inFIG. 2 . - Thus, according to the above described improved structure of case, receiving containers are provided for receiving and stowing wheel sets, whereby when the case is moved, especially when case is pushed or pulled, the wheel sets stowed in the receiving containers can be selectively extended outside the case to allow 360 degree rotation with the aid of wheels of the wheel sets and when a user wishes to place the case for the purposes of for example shipping or transportation of baggage, the wheel sets mounted to the bottom of the case can be first retracted back into and stowed in the receiving containers of the case to avoid undesired impact of the wheel sets during the transportation of the case to thereby extend the service life thereof and also to reduce the amount of space needed between adjacent case.
- Although the present invention has been described with reference to the preferred embodiments thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.
Claims (9)
1. A structure of case, comprising:
a case body, which has a top and a bottom and forms therein a receiving space adapted to receive and hold at least one article;
a plurality of receiving containers, each of which is arranged inside the bottom of the case body and has a top and a bottom, the bottom forming an opening;
a plurality of wheel sets, which is respectively receivable in the receiving containers and each comprises an elastic element, a base, and a wheel, the elastic element having a first end fixed to the top of the respective receiving container and a second end fixed a top of the base, the wheel being fixed to a bottom of the base; and
a plurality of fastener assemblies, each of which comprises a handle, a support section, and a stop section, the handle being pivotally mounted to an outside wall of the case body at a location adjacent to the bottom of the case body and corresponding to a corresponding one of the receiving containers, the support section projecting from the handle to extend through the outside wall of the case body and be partially received in the corresponding receiving container, the support section being positionable against the bottom of the base to support the base, the stop section being arranged at the bottom of the case body, wherein the fastener assemblies are of a number corresponding to the number of the wheel sets and that of the receiving container.
2. The structure of case as claimed in claim 1 , wherein when the handle is moved in a direction away from the outside wall of the case body, the support section is caused to separate from the base of the wheel set to allow the base and the wheel to be sprung by the elastic element in a direction to extend outside the bottom of the case body until the base leans against the bottom of the corresponding receiving container and the wheel of the wheel set projects outside the bottom of the case body, whereby the handle is allowed to return to lean against the outside wall of the case body and the support section is allowed to return inside the corresponding receiving container of the case body to be positioned against the top of the base of the wheel set.
3. The structure of case as claimed in claim 1 , wherein when the handle is moved away from the outside wall of the case body and the support section is moved from the corresponding receiving container of the case body toward the outside wall of the case body, the case body is allowed to apply an external force in a downward direction to compress and force the wheel set and the elastic element back into the corresponding receiving container of the case body and the handle is returned back to leaning against the outside wall of the case body, the support section being returned back into the corresponding receiving container of the case body and leaning against the bottom of the base of the wheel set to stow the wheel set in the corresponding receiving container of the case body.
4. The structure of case as claimed in claim 1 , wherein each of the wheel sets comprises a wheel mount, which is fixed to the bottom of the base and pivotally connected to the wheel set.
5. The structure of case as claimed in claim 1 , wherein the wheel of each of the wheel sets is rotatable in a range of 360 degrees.
6. The structure of case as claimed in claim 1 further comprising a pull bar mounted to the top of the case body.
7. The structure of case as claimed in claim 1 , wherein the support section of each of the fastener assemblies received in the corresponding receiving container at a vertical position that substantially corresponding to vertical position where the base is located in the bottom of the case body when the wheel set is extended outside the case body.
8. The structure of case as claimed in claim 1 , wherein the handle, the support section, and the stop section of the fastener assembly are integrated together as a unitary member.
9. The structure of case as claimed in claim 1 , wherein the elastic element comprises a spring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/654,544 US20140110203A1 (en) | 2012-10-18 | 2012-10-18 | Structure of case |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/654,544 US20140110203A1 (en) | 2012-10-18 | 2012-10-18 | Structure of case |
Publications (1)
Publication Number | Publication Date |
---|---|
US20140110203A1 true US20140110203A1 (en) | 2014-04-24 |
Family
ID=50484324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/654,544 Abandoned US20140110203A1 (en) | 2012-10-18 | 2012-10-18 | Structure of case |
Country Status (1)
Country | Link |
---|---|
US (1) | US20140110203A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017193802A1 (en) * | 2016-05-13 | 2017-11-16 | 安徽酷哇机器人有限公司 | Moving platform and suitcase comprising same |
KR20200073961A (en) * | 2018-12-14 | 2020-06-24 | 김종진 | Travel bag |
WO2020146006A1 (en) * | 2019-01-10 | 2020-07-16 | Pdss Luggage Llc | Linear action mechanism for retractable luggage wheels |
USD977839S1 (en) * | 2019-09-25 | 2023-02-14 | Switch, Ltd. | Retractable wheel base luggage |
-
2012
- 2012-10-18 US US13/654,544 patent/US20140110203A1/en not_active Abandoned
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017193802A1 (en) * | 2016-05-13 | 2017-11-16 | 安徽酷哇机器人有限公司 | Moving platform and suitcase comprising same |
KR20200073961A (en) * | 2018-12-14 | 2020-06-24 | 김종진 | Travel bag |
KR102399186B1 (en) * | 2018-12-14 | 2022-05-18 | 김종진 | Travel bag |
WO2020146006A1 (en) * | 2019-01-10 | 2020-07-16 | Pdss Luggage Llc | Linear action mechanism for retractable luggage wheels |
USD977839S1 (en) * | 2019-09-25 | 2023-02-14 | Switch, Ltd. | Retractable wheel base luggage |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |