EP3664659B1 - Travel suitcase and method for assembling it - Google Patents
Travel suitcase and method for assembling it Download PDFInfo
- Publication number
- EP3664659B1 EP3664659B1 EP18726855.2A EP18726855A EP3664659B1 EP 3664659 B1 EP3664659 B1 EP 3664659B1 EP 18726855 A EP18726855 A EP 18726855A EP 3664659 B1 EP3664659 B1 EP 3664659B1
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- EP
- European Patent Office
- Prior art keywords
- support body
- retention
- annular
- annular support
- sidewalls
- Prior art date
- 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.)
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- 238000000034 method Methods 0.000 title claims description 6
- 230000014759 maintenance of location Effects 0.000 claims description 51
- 238000005096 rolling process Methods 0.000 claims description 45
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims 1
- 229920001971 elastomer Polymers 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000806 elastomer Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- -1 Styrene-Ethylene-Butylene-Styrene Chemical class 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
Images
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C13/00—Details; Accessories
-
- 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
- A45C2005/148—Other arrangements of the rolling means
-
- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45C—PURSES; LUGGAGE; HAND CARRIED BAGS
- A45C2200/00—Details not otherwise provided for in A45C
Definitions
- the present invention relates to a travel suitcase, and a method for assembling it, according to the preamble of the respective main claims.
- the suitcase in question is of the type commonly used to transport objects or clothing and is usually available in different shapes and/or sizes, e.g., according to the needs of travelers or the type of journey.
- the suitcase according to the invention is of the type equipped with two or more wheels for ground transport pulled by the user by means of at least one handle.
- the present invention is therefore part of the industrial luggage sector or that of the production of accessories for suitcases.
- State-of-the-art travel suitcases consist of a rigid or semi-rigid container, inside which useful objects such as clothing or other items can be stored in a traditional way.
- the container is generally equipped with at least one handle for pulling over the ground and consists of two parts or of a generally rigid or semi-rigid containment body, with which is associable a closing cover sealable on the containment body, by means of closing means such as hinges or fasteners.
- the containment body and cover can also be specular and perform both the containment function.
- the container With the container are mechanically associated two or more wheels for dragging the suitcase over the ground pulled by the user by means of the handle.
- the wheels are generally associated with the containment body of the container by means of forks, which are often part of supports fixed externally to the containment body.
- the handle can be fixed or associated with at least one extendable rod; moreover, depending on the model, size and type of suitcase, the wheels can be two or more than two and associated with the bottom wall of the containment body at one of its short sides or one of its long sides.
- Suitcase wheels generally comprise a plastic or metal rim mechanically bearing, fixed externally, an annular rolling body made of rubber or similar materials.
- the rim has a through hole for inserting a pin supported by a fork which is in turn mounted on the suitcase container, e.g., by means of a plate or a fifth wheel which allows the fork to rotate with respect to a substantially vertical axis.
- the inter-positioning is also known of a bearing between the rim and the pin to improve wheel rolling.
- a suitcase is for example known from patent WO2017/065601 that can be mechanically associated with a removable trolley, e.g., by means of belts, which has wheels much larger than those of a normal suitcase so that they need fewer revolutions to cover the same distance and consequently cause less friction and ultimately a lower level of noise.
- the wheels are also suitable to be filled with air or rubber and this feature together with the size of the wheels themselves permits reducing the amount of noise.
- suitcases which are equipped with wheels, each of which comprising a rim with a through-opening and bearing externally associated an annular rolling body consisting of a rubber tire delimiting an air chamber.
- Such wheel also has two shaped flanges associable with the two sides of the wheel and each having a stem that fits in the through opening of the rim and mechanically couples with the stem of the other flange. Screws are then provided to securely hold the two flanges anchored the one to the other.
- Each flange also has a peripheral edge which presses against a lateral side of the annular rolling body. More clearly, each lateral side of the tire remains sandwiched between the edge of a flange and a rise in the rim.
- a first drawback lies in the fact that, during use, the sides of the tire tend to come out of the seat defined between the edge of the corresponding flange and the rise in the rim, especially in the event of knocks, or by dragging the wheel transversely with respect to its normal direction of forward movement.
- a second drawback is that the suitcase wheel, structured as described above, involves the setting up of a complex and costly production process and has a negative impact on the overall costs of the suitcase.
- a third drawback lies in the fact that the method to assemble these wheels has proved quite complex due to the need to associate the two flanges the one to the other and to the need to hold them together with screws.
- the problem underlying the present invention is that of overcoming the drawbacks shown by the prior art known up to now, providing a travel suitcase, which is capable of generating a low level of noise as a result of its pulling over the ground.
- a further object of the present invention is to provide a travel suitcase, which is provided with wheels that are structurally simple and cheap to manufacture.
- a further object of the present invention is to provide a travel suitcase, which is provided with wheels for simple and fast maintenance.
- a further object of the present invention is to provide a travel suitcase, which is provided with wheels which have a reliable and completely safe operation.
- a further object of the present invention is to provide a method for assembling a travel suitcase, which allows mounting, maintaining and replacing the wheels easily and quickly.
- the travel suitcase 1 comprises, in what is a completely traditional way, a rigid or semi-rigid containment body 2 (or which has at least a rigid or semi-rigid wall), usually box-shaped, in particular parallelepiped shaped, inside which the objects required by the user can be stored, such as clothing or other objects for example needed to make a journey.
- the containment body 2 is generally made up of two parts, i.e. a support body 2', generally rigid or semi-rigid, which usually defines the greater containment volume of the suitcase 1, and a closing cover 2" associable with the support body 2' by means of closing means such as hinges or fasteners.
- the support body 2' and the closing cover 2" are advantageously in the form of two shells which, once coupled, delimit the internal containment compartment of the suitcase. They can also be specular and perform both containment functions.
- the suitcase also has a handle 3 that can be fixed or associated with at least one extendable rod 30.
- the travel suitcase 1 also comprises, depending on the model, the size and the type of suitcase, two or more wheels 4. More in detail, the suitcase 1 may have two or three wheels 4 in line associated with the bottom wall of the containment body at one of its short sides, as in the case of a travel suitcase of significant size, or at one of its long sides, as in the case, e.g., of a trolley as shown in the embodiment in Figure 1 .
- the wheels 4 can be partially embedded in the containment body 2 and associated therewith by means of a shaped corner piece of the containment body 2 itself, as in the example in Figure 1 , or else they can be completely outside the containment body 2 and associated therewith by means of a support foot 5 of the containment body 2 projecting below the suitcase in accordance with a known embodiment not shown in detail, inasmuch as well known to the technician in the sector.
- the shaped corner piece or support leg is equipped with a fork (generally made of a single body piece with the shaped corner piece or support leg), to support the pin which in turn supports the wheel 4 in a revolving manner (or even a pair of wheels 4 side by side).
- the wheels 4 can be mounted individually on the containment body 2 or in pairs of wheels side by side and supported by a single pin.
- Each wheel 4 comprises a hub 5, which is mechanically connected by means of a pin 6 to the containment body 2 (i.e. to a support foot or a corner piece thereof), and an annular rolling tread 7, which is capable of coming into contact with the ground.
- the annular tread 7 is externally mounted on the hub 5 and delimiting an internal air chamber 8, by means of two sidewalls 9 and a curved connector portion 10 which connects the sidewalls 9 with each other.
- the sidewalls 9 are advantageously substantially parallel to each other.
- At least one side has a terminal portion 91, 191.
- both sidewalls 9 have a terminal portion 91.
- the curved connector portion 10 is designed to rotate in contact with the ground when the suitcase is pulled by the user through its handle.
- the hub 5 comprises an annular support body 50, provided with a through seat 51, interposed between the two lateral faces of the annular support 50, orthogonal to the radial extension of the annular support body (50).
- the annular support 50 is therefore also provided with a retention crest 52, radially projecting outwards, positioned to close the air chamber 8.
- the retention crest 52 fits in between the internal faces 90A of the two sidewalls 9 of the annular rolling tread 7, to close the above-mentioned air chamber 8.
- the hub 5 also comprises, according to the invention, at least one retention plate 11, mechanically coupled to the annular support body 50 by means of anchorage means 12 and provided with a peripheral portion 110 interacting with the terminal portion 91, 191 of at least one sidewall 9 of the annular rolling tread 7, to keep the latter in retention relationship against the crest 52 of the annular support body 50.
- the hub 5 comprises two retention plates 11, which are mechanically coupled to the annular support body 50 in a mutually counter-facing position by means of the anchorage means 12.
- Such plates 11 are provided with two corresponding peripheral portions 110 placed in abutment against the external faces 90B of the two sidewalls 9 of the annular rolling tread 7, in order to compress the latter in retention relationship against the lateral surfaces of the retention crest 52 of the annular support body 50.
- the wheel 4 of the suitcase 1 is not only very silent, due to the presence of the air chamber 8 which dampens the noises emitted both by the unevenness of the ground and by the friction inside the hub 5, but also cheap to manufacture being easily assembled and with easy to prepare production processes.
- the anchorage means 12 comprise at least one projecting appendage 13, which extends from a central portion 111 of the retention plates 11, in a single body piece therewith and is provided at the free end with a connection tooth 14.
- the anchorage means 12 further comprise at least one seat 53, made in the annular support body 50 and provided with a lateral opening 54 crossed by the projecting appendage 13 and with a step 55, engaged by the connection tooth 14 of the projecting appendage 13.
- the annular rolling tread 7 remains firmly fixed to the hub 5, its two sidewalls 9 being stapled between the peripheral portions 110 of the retention plates 11 and the retention crest 52 of the annular support body 50.
- the appendages 13 of the retention plates 11 are slightly elastically deformed with the connection tooth 14 that glides in the seat 53 and then snap engages in the step 55 of the seat 53, blocking the retention plate 11 to the support body 50, in a position wherein the same retention plate 11 is susceptible to push with its peripheral portion 110 against the external face 90A of the sidewall 9 of the annular rolling tread 7.
- each retention plate 11 has at least two projecting appendages 13 for better attachment of the plate 11 itself to the support body 50, which correspondingly has an equal number of seats 53.
- the seats 53 of the support body 50 are preferably provided offset on the two lateral faces thereof, to allow the seat 53 reaching a depth sufficient to allow the connection tooth 14 to engage to the support body 50 beyond half the thickness of the same support body 50, so as to ensure a better hold of the retention plate 11 against the sidewall 9 of the annular rolling tread 7.
- the hub 5 comprises at least one bearing 15, mounted in the through seat 51 of the support body 50 against a shoulder 56 defined by an inner ring of the support body 50 itself.
- the retention plates 11 are provided with a through hole 20 in which the support pin 6 of the wheel 4 is fitted.
- the same pin 6 is inserted engaged in the hole of the bearing 15 to remain integral with the inner ring of the bearing 15 itself, which advantageously remains substantially fixed.
- the outer ring of the bearing 15 is instead made integral by the sandwich made by the retention plates 11 fastened to the supporting body 50 and therefore rotates together with the latter, the retention plates 11 themselves and the annular rolling tread 7, around the rotation axis of the wheel 4.
- two bearings 15 are provided for each wheel which are fitted in the through seat 51 of the support body 50 from its opposite lateral faces and each against the provided shoulder 56 which acts as end stop during assembly of the hub 5.
- the retention crest 52 of the annular support body 50 has a substantially frustoconical shape with the sidewalls 9 of the annular rolling tread 7 adhering to the lateral surfaces of the crest 52 and preferably tapered towards the free end thereof.
- the sidewalls 9 of the annular rolling tread 7 have external faces 90B that are substantially parallel to each other and internal faces 90A that are tilted with respect to the middle plane of the wheel 4 with an equal tilt to that of the lateral surfaces of the crest 5.
- the external faces 90B of the sidewalls 9 of the annular rolling tread 7 preferably have an internal lowered terminal portion 91 (which in the example coincides with the part of the sidewall 9 which engages with the peripheral portion 110 of the plate 11) defining an annular recess in which a corresponding peripheral portion 110 of the retention plate 11 is inserted at least partly embedded.
- the retention plates 11 do not significantly protrude from the annular rolling tread 7 thus avoiding receiving knocks during the use of the suitcase 1.
- peripheral portions 110 of the retention plates 11 are provided with knurling, ribbing or a plurality of projecting elements (in this example there are circular ribs 112) to exert a better seal against the external face of the two sidewalls 9 of the annular rolling tread 7.
- the rubber of the annular rolling tread 7 deforms at the compression area against the knurling, ribbing or other projecting elements, making the connection to the hub 5 firmer.
- the lateral surfaces of the crest 52 are also provided with knurling, ribbing (indicated by 112' in Figure 4 ) or with a plurality of projecting elements for better seal against the internal face 90A of the two sidewalls 9 of the annular rolling tread 7.
- the curved connector portion 10 of the annular rolling tread 7 has reduced thickness with respect to that of the sidewalls 9 of the same rolling annular tread 7 and preferably smaller than or equal to half the thickness of the sidewalls 9. This allows the curved connector portion 10 of the annular rolling tread 7 to be mechanically supported by the sidewalls 9 and at the same time to deform easily by rotating on the roughness of the ground so as to cushion the impulses and thus ultimately generate a reduced noise emission during the use of the suitcase even on particularly irregular surfaces such as e.g. roads.
- the wheel of the suitcase 1 makes it possible to easily make the lateral plates 11 of the desired shape even only for aesthetic reasons such as e.g. with spokes or rims which connect a central portion to the peripheral portions 110.
- the annular rolling tread 7 is constituted by an elastomer, in particular SEBS Styrene-Ethylene-Butylene-Styrene preferably selected with an elasticity defined by its elongation at break with percentage value comprised between 650 and 850 with ISO 37 - DIN 53455-53504 measurement method.
- an elastomer in particular SEBS Styrene-Ethylene-Butylene-Styrene preferably selected with an elasticity defined by its elongation at break with percentage value comprised between 650 and 850 with ISO 37 - DIN 53455-53504 measurement method.
- the same elastomer has hardness with three 2 mm superimposed plates with ISO 868 - DIN 53505 measurement method amounting to 50-60 Shore A.
- the support body 50 is instead preferably made of plastic material and in particular of 66/6 polyamide with medium viscosity.
- a second embodiment of the travel suitcase is totally similar to the first described embodiment and differs in the fact that the terminal portion 191 comprises an elongated body 192 which extends towards the centre of the annular rolling tread 7 and an extreme head 193 which is bigger than the elongated body 192.
- the retention plate 11 comprises a retention recess 194 in which the extreme head 193 can be fitted to measure.
- the annular support body 50 comprises at least one slot 195 obtained in the proximity of the retention crest 52 and in which the extreme head 193 can be fitted to measure.
- the anchorage means 12 comprise at least one projecting appendage 13, which extends from a central portion 111 of each of the retention plates 11, in a single body piece with these.
- the projecting appendage 13 has, at the free end, a connection tooth 14 provided with two elastically approachable connection portions 114.
- connection portions 114 are two branches of the projecting appendage 13, such as to be brought nearer to one another under the effect of a pressure force, and tending to return to their initial position in the absence of a pressure force.
- the anchorage means 12 furthermore, comprise at least one seat 53 obtained in the annular support body 50, having a lateral opening 54 crossed by the projecting appendage 13.
- connection tooth 14 is engaged in the seat 53.
- connection portions 114 are kept close together thanks to the pressure exerted by the walls of the seat 53.
- Each plate 11 comprises a plurality of seats 53 arranged around the center of the plate itself.
- Each seat 53 is associated with a respective projecting appendage 13.
- one seat 53 is associated with a projecting appendage 13 of a plate 11
- the other seat 53 is associated with a projecting appendage 13 of the other plate 11.
- a third embodiment of the travel suitcase is totally similar to the second embodiment described above, and differs in that it comprises a first terminal portion 191a associated with the sidewall 9a and a second terminal portion 191b associated with the other sidewall 9b, and wherein at least one of the first terminal portion 191a and the second terminal portion 191b is without the extreme head 193.
- the second terminal portion 191b is without the extreme head 193. This makes it easier to insert the annular support body 50 during assembly.
- the elongated body 192 acts as a shoulder for the respective plate 11, making it easier to position.
- a fourth embodiment of the travel suitcase is totally similar to the third embodiment described above, and differs in that it comprises a sidewall 9 without terminal portion 91, 191.
- a fifth embodiment of the travel suitcase is totally similar to the second, third and fourth embodiments described above, and differs in that a plate 11 forms with the annular support body 50 a single body piece insertable in the annular rolling tread 7.
- the present invention also relates to a method for assembling a travel suitcase made according to the characteristics illustrated above, of which reference numerals will be maintained for simplicity of exposure.
- each retention plate 11 in particular first one then the other in succession, to the annular support body 50.
- peripheral portion 110 of the plate 11 is placed in abutment against the external face 90B of a corresponding sidewall 9 of the annular rolling tread 7, to compress the latter in a retention relationship against the crest 52 of the annular support body 50.
- This mechanical coupling provides to insert the projecting appendage 13 (and preferably the at least two projecting appendages 13) of each of the two retention plates 11 into the corresponding seat 53 made in the annular support body 50, until the connection tooth 14 of the projecting appendage 13 engages a in step 55 of the seat 53.
- the wheel 4 thus assembled is mounted on the containment body 2 of the suitcase, by engaging the pin 6 in seats of a fork element integral with the containment body 2 of the suitcase itself.
- the fork is generally made of a single body piece with a shaped corner piece or a support foot of the containment body 2 and supports the pin which in turn supports the wheel 4 in a revolving manner.
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- Purses, Travelling Bags, Baskets, Or Suitcases (AREA)
Description
- The present invention relates to a travel suitcase, and a method for assembling it, according to the preamble of the respective main claims.
- The suitcase in question is of the type commonly used to transport objects or clothing and is usually available in different shapes and/or sizes, e.g., according to the needs of travelers or the type of journey.
- More in detail, the suitcase according to the invention is of the type equipped with two or more wheels for ground transport pulled by the user by means of at least one handle.
- The present invention is therefore part of the industrial luggage sector or that of the production of accessories for suitcases.
- State-of-the-art travel suitcases are known which consist of a rigid or semi-rigid container, inside which useful objects such as clothing or other items can be stored in a traditional way. The container is generally equipped with at least one handle for pulling over the ground and consists of two parts or of a generally rigid or semi-rigid containment body, with which is associable a closing cover sealable on the containment body, by means of closing means such as hinges or fasteners. The containment body and cover can also be specular and perform both the containment function.
- With the container are mechanically associated two or more wheels for dragging the suitcase over the ground pulled by the user by means of the handle. The wheels are generally associated with the containment body of the container by means of forks, which are often part of supports fixed externally to the containment body.
- The handle can be fixed or associated with at least one extendable rod; moreover, depending on the model, size and type of suitcase, the wheels can be two or more than two and associated with the bottom wall of the containment body at one of its short sides or one of its long sides.
- Suitcase wheels generally comprise a plastic or metal rim mechanically bearing, fixed externally, an annular rolling body made of rubber or similar materials. The rim has a through hole for inserting a pin supported by a fork which is in turn mounted on the suitcase container, e.g., by means of a plate or a fifth wheel which allows the fork to rotate with respect to a substantially vertical axis.
- The inter-positioning is also known of a bearing between the rim and the pin to improve wheel rolling.
- The suitcases of known type described above have in practice shown themselves not to be devoid of a major drawback.
- In fact, during use it has been found that the wheels of these suitcases generate a lot of noise, mainly due to the fact that the annular rolling body is a solid body totally inadequate for dampening the vibrations caused by the roughness of the ground as a result of dragging the suitcase over the ground.
- Therefore, especially in areas where travelers are concentrated, such as stations, airports, hotels and tourist areas, noise pollution produced by pulling suitcases over the ground is to say the least annoying.
- In order to avoid this drawback, a suitcase is for example known from patent
WO2017/065601 that can be mechanically associated with a removable trolley, e.g., by means of belts, which has wheels much larger than those of a normal suitcase so that they need fewer revolutions to cover the same distance and consequently cause less friction and ultimately a lower level of noise. - The wheels are also suitable to be filled with air or rubber and this feature together with the size of the wheels themselves permits reducing the amount of noise.
- This patent does not dwell on the technical details which allow making the air-filled wheel and which can therefore lead to an industrial production which, besides solving the noise problem, also allows production at competitive costs. The plan to install a trolley on the suitcase entails considerable inconvenience, which the user is unlikely to accept. Furthermore, once disconnected from the suitcase the trolley must also be transported and therefore if it too is placed in the suitcase, this requires, e.g., a bag to prevent it dirtying other objects in the same suitcase.
- Finally, suitcases are known which are equipped with wheels, each of which comprising a rim with a through-opening and bearing externally associated an annular rolling body consisting of a rubber tire delimiting an air chamber. Such wheel also has two shaped flanges associable with the two sides of the wheel and each having a stem that fits in the through opening of the rim and mechanically couples with the stem of the other flange. Screws are then provided to securely hold the two flanges anchored the one to the other. Each flange also has a peripheral edge which presses against a lateral side of the annular rolling body. More clearly, each lateral side of the tire remains sandwiched between the edge of a flange and a rise in the rim.
- The suitcases of known type having the wheel described above have nevertheless shown themselves to be not without drawbacks.
- A first drawback lies in the fact that, during use, the sides of the tire tend to come out of the seat defined between the edge of the corresponding flange and the rise in the rim, especially in the event of knocks, or by dragging the wheel transversely with respect to its normal direction of forward movement.
- A second drawback is that the suitcase wheel, structured as described above, involves the setting up of a complex and costly production process and has a negative impact on the overall costs of the suitcase.
- A third drawback lies in the fact that the method to assemble these wheels has proved quite complex due to the need to associate the two flanges the one to the other and to the need to hold them together with screws.
- Document
WO2016142919 discloses a travel suitcase comprising wheels provided with a hub and two retention plates coupled to each other. - In this situation, the problem underlying the present invention is that of overcoming the drawbacks shown by the prior art known up to now, providing a travel suitcase, which is capable of generating a low level of noise as a result of its pulling over the ground.
- A further object of the present invention is to provide a travel suitcase, which is provided with wheels that are structurally simple and cheap to manufacture.
- A further object of the present invention is to provide a travel suitcase, which is provided with wheels for simple and fast maintenance.
- A further object of the present invention is to provide a travel suitcase, which is provided with wheels which have a reliable and completely safe operation.
- A further object of the present invention is to provide a method for assembling a travel suitcase, which allows mounting, maintaining and replacing the wheels easily and quickly.
- The technical characteristics of the invention, according to the aforementioned objects, are clearly evident from the contents of the claims below and the advantages thereof will become more evident in the detailed description, made with reference to the attached drawings, of the following embodiments which are purely exemplary and non-limiting, in which:
-
Figure 1 illustrates a schematic perspective view of a travel suitcase which the present invention relates to; -
Figure 2 illustrates an enlarged view of a detail of the suitcase relative to one of the wheels thereof; -
Figure 3 illustrates the wheel of the suitcase ofFigure 2 in a diametrical section view; -
Figure 4 illustrates an exploded view of the wheel of the suitcase ofFigure 2 ; -
Figure 5 illustrates the exploded view ofFigure 3 with the wheel components shown in diametrical section and without a planned annular rolling body; -
Figure 6 illustrates an exploded view of a second embodiment of the wheel of the suitcase according to the invention; -
Figure 7 illustrates an exploded view of a third embodiment of the wheel of the suitcase according to the invention. - According to the figures of the accompanying drawings, an example of a travel suitcase according to the present invention has been globally indicated with
reference number 1. - The
travel suitcase 1 comprises, in what is a completely traditional way, a rigid or semi-rigid containment body 2 (or which has at least a rigid or semi-rigid wall), usually box-shaped, in particular parallelepiped shaped, inside which the objects required by the user can be stored, such as clothing or other objects for example needed to make a journey. Thecontainment body 2 is generally made up of two parts, i.e. a support body 2', generally rigid or semi-rigid, which usually defines the greater containment volume of thesuitcase 1, and aclosing cover 2" associable with the support body 2' by means of closing means such as hinges or fasteners. The support body 2' and theclosing cover 2" are advantageously in the form of two shells which, once coupled, delimit the internal containment compartment of the suitcase. They can also be specular and perform both containment functions. - The suitcase also has a
handle 3 that can be fixed or associated with at least oneextendable rod 30. - The
travel suitcase 1 also comprises, depending on the model, the size and the type of suitcase, two ormore wheels 4. More in detail, thesuitcase 1 may have two or threewheels 4 in line associated with the bottom wall of the containment body at one of its short sides, as in the case of a travel suitcase of significant size, or at one of its long sides, as in the case, e.g., of a trolley as shown in the embodiment inFigure 1 . - The
wheels 4 can be partially embedded in thecontainment body 2 and associated therewith by means of a shaped corner piece of thecontainment body 2 itself, as in the example inFigure 1 , or else they can be completely outside thecontainment body 2 and associated therewith by means of asupport foot 5 of thecontainment body 2 projecting below the suitcase in accordance with a known embodiment not shown in detail, inasmuch as well known to the technician in the sector. In any case, the shaped corner piece or support leg is equipped with a fork (generally made of a single body piece with the shaped corner piece or support leg), to support the pin which in turn supports thewheel 4 in a revolving manner (or even a pair ofwheels 4 side by side). - Furthermore, the
wheels 4 can be mounted individually on thecontainment body 2 or in pairs of wheels side by side and supported by a single pin. - Each
wheel 4 comprises ahub 5, which is mechanically connected by means of apin 6 to the containment body 2 (i.e. to a support foot or a corner piece thereof), and anannular rolling tread 7, which is capable of coming into contact with the ground. - The
annular tread 7 is externally mounted on thehub 5 and delimiting aninternal air chamber 8, by means of twosidewalls 9 and acurved connector portion 10 which connects thesidewalls 9 with each other. - The
sidewalls 9 are advantageously substantially parallel to each other. - At least one side has a
terminal portion - In the first embodiment shown, both
sidewalls 9 have aterminal portion 91. Thecurved connector portion 10 is designed to rotate in contact with the ground when the suitcase is pulled by the user through its handle. - According to the idea underlying the present invention, the
hub 5 comprises anannular support body 50, provided with a throughseat 51, interposed between the two lateral faces of theannular support 50, orthogonal to the radial extension of the annular support body (50). - The
annular support 50 is therefore also provided with aretention crest 52, radially projecting outwards, positioned to close theair chamber 8. - In this first embodiment, the
retention crest 52 fits in between theinternal faces 90A of the twosidewalls 9 of the annular rollingtread 7, to close the above-mentionedair chamber 8. - The
hub 5 also comprises, according to the invention, at least oneretention plate 11, mechanically coupled to theannular support body 50 by means of anchorage means 12 and provided with aperipheral portion 110 interacting with theterminal portion sidewall 9 of the annular rollingtread 7, to keep the latter in retention relationship against thecrest 52 of theannular support body 50. - In particular, in the first embodiment, the
hub 5 comprises tworetention plates 11, which are mechanically coupled to theannular support body 50 in a mutually counter-facing position by means of the anchorage means 12. -
Such plates 11 are provided with two correspondingperipheral portions 110 placed in abutment against theexternal faces 90B of the twosidewalls 9 of the annular rollingtread 7, in order to compress the latter in retention relationship against the lateral surfaces of theretention crest 52 of theannular support body 50. - Thanks to the present invention, the
wheel 4 of thesuitcase 1 is not only very silent, due to the presence of theair chamber 8 which dampens the noises emitted both by the unevenness of the ground and by the friction inside thehub 5, but also cheap to manufacture being easily assembled and with easy to prepare production processes. - According to an advantageous embodiment illustrated in the accompanying figures, the anchorage means 12 comprise at least one projecting
appendage 13, which extends from acentral portion 111 of theretention plates 11, in a single body piece therewith and is provided at the free end with aconnection tooth 14. The anchorage means 12 further comprise at least oneseat 53, made in theannular support body 50 and provided with alateral opening 54 crossed by the projectingappendage 13 and with astep 55, engaged by theconnection tooth 14 of the projectingappendage 13. - Thanks to the above-mentioned anchorage means 12, the annular rolling
tread 7 remains firmly fixed to thehub 5, its twosidewalls 9 being stapled between theperipheral portions 110 of theretention plates 11 and theretention crest 52 of theannular support body 50. - Furthermore, it is extremely easy to push the projecting
appendages 13 of theretention plates 11 into theseats 53 of thesupport body 50 during the mounting phase. During this insertion operation, theappendages 13 are slightly elastically deformed with theconnection tooth 14 that glides in theseat 53 and then snap engages in thestep 55 of theseat 53, blocking theretention plate 11 to thesupport body 50, in a position wherein thesame retention plate 11 is susceptible to push with itsperipheral portion 110 against theexternal face 90A of thesidewall 9 of the annular rollingtread 7. - Preferably, each
retention plate 11 has at least two projectingappendages 13 for better attachment of theplate 11 itself to thesupport body 50, which correspondingly has an equal number ofseats 53. - The
seats 53 of thesupport body 50 are preferably provided offset on the two lateral faces thereof, to allow theseat 53 reaching a depth sufficient to allow theconnection tooth 14 to engage to thesupport body 50 beyond half the thickness of thesame support body 50, so as to ensure a better hold of theretention plate 11 against thesidewall 9 of the annular rollingtread 7. - Advantageously, the
hub 5 comprises at least onebearing 15, mounted in the throughseat 51 of thesupport body 50 against ashoulder 56 defined by an inner ring of thesupport body 50 itself. - The
retention plates 11 are provided with a throughhole 20 in which thesupport pin 6 of thewheel 4 is fitted. Thesame pin 6 is inserted engaged in the hole of thebearing 15 to remain integral with the inner ring of thebearing 15 itself, which advantageously remains substantially fixed. The outer ring of thebearing 15 is instead made integral by the sandwich made by theretention plates 11 fastened to the supportingbody 50 and therefore rotates together with the latter, theretention plates 11 themselves and the annular rollingtread 7, around the rotation axis of thewheel 4. - Preferably, two
bearings 15 are provided for each wheel which are fitted in the throughseat 51 of thesupport body 50 from its opposite lateral faces and each against the providedshoulder 56 which acts as end stop during assembly of thehub 5. - More in detail, in accordance with a preferred embodiment of the present invention illustrated in the accompanying figures, the
retention crest 52 of theannular support body 50 has a substantially frustoconical shape with thesidewalls 9 of the annular rollingtread 7 adhering to the lateral surfaces of thecrest 52 and preferably tapered towards the free end thereof. - Preferably, the
sidewalls 9 of the annular rollingtread 7 haveexternal faces 90B that are substantially parallel to each other andinternal faces 90A that are tilted with respect to the middle plane of thewheel 4 with an equal tilt to that of the lateral surfaces of thecrest 5. - The external faces 90B of the
sidewalls 9 of the annular rollingtread 7 preferably have an internal lowered terminal portion 91 (which in the example coincides with the part of thesidewall 9 which engages with theperipheral portion 110 of the plate 11) defining an annular recess in which a correspondingperipheral portion 110 of theretention plate 11 is inserted at least partly embedded. This way, theretention plates 11 do not significantly protrude from the annular rollingtread 7 thus avoiding receiving knocks during the use of thesuitcase 1. - In order to increase the anchorage of the annular rolling
tread 7 to thehub 5, theperipheral portions 110 of theretention plates 11 are provided with knurling, ribbing or a plurality of projecting elements (in this example there are circular ribs 112) to exert a better seal against the external face of the twosidewalls 9 of the annular rollingtread 7. - Basically the rubber of the annular rolling
tread 7 deforms at the compression area against the knurling, ribbing or other projecting elements, making the connection to thehub 5 firmer. - Advantageously, the lateral surfaces of the
crest 52 are also provided with knurling, ribbing (indicated by 112' inFigure 4 ) or with a plurality of projecting elements for better seal against theinternal face 90A of the twosidewalls 9 of the annular rollingtread 7. - The
curved connector portion 10 of the annular rollingtread 7 has reduced thickness with respect to that of thesidewalls 9 of the same rollingannular tread 7 and preferably smaller than or equal to half the thickness of thesidewalls 9. This allows thecurved connector portion 10 of the annular rollingtread 7 to be mechanically supported by thesidewalls 9 and at the same time to deform easily by rotating on the roughness of the ground so as to cushion the impulses and thus ultimately generate a reduced noise emission during the use of the suitcase even on particularly irregular surfaces such as e.g. roads. - Finally, it should be noticed that the wheel of the
suitcase 1 according to the invention makes it possible to easily make thelateral plates 11 of the desired shape even only for aesthetic reasons such as e.g. with spokes or rims which connect a central portion to theperipheral portions 110. - Advantageously moreover, the annular rolling
tread 7 is constituted by an elastomer, in particular SEBS Styrene-Ethylene-Butylene-Styrene preferably selected with an elasticity defined by its elongation at break with percentage value comprised between 650 and 850 with ISO 37 - DIN 53455-53504 measurement method. - Advantageously, the same elastomer has hardness with three 2 mm superimposed plates with ISO 868 - DIN 53505 measurement method amounting to 50-60 Shore A.
- The
support body 50 is instead preferably made of plastic material and in particular of 66/6 polyamide with medium viscosity. - A second embodiment of the travel suitcase is totally similar to the first described embodiment and differs in the fact that the
terminal portion 191 comprises anelongated body 192 which extends towards the centre of the annular rollingtread 7 and anextreme head 193 which is bigger than theelongated body 192. - As shown in
Figure 6 , theretention plate 11 comprises aretention recess 194 in which theextreme head 193 can be fitted to measure. - Furthermore, the
annular support body 50 comprises at least oneslot 195 obtained in the proximity of theretention crest 52 and in which theextreme head 193 can be fitted to measure. - This way, when the
plates 11 are tightly sandwiched, theextreme head 193 remains trapped in the space defined by theslot 195 and by theretention recess 194 keeping thesidewalls 9 in a retention relationship against thecrest 52. - In the second embodiment shown, the anchorage means 12 comprise at least one projecting
appendage 13, which extends from acentral portion 111 of each of theretention plates 11, in a single body piece with these. - The projecting
appendage 13 has, at the free end, aconnection tooth 14 provided with two elasticallyapproachable connection portions 114. - As shown in
Figure 6 , theconnection portions 114 are two branches of the projectingappendage 13, such as to be brought nearer to one another under the effect of a pressure force, and tending to return to their initial position in the absence of a pressure force. - The anchorage means 12, furthermore, comprise at least one
seat 53 obtained in theannular support body 50, having alateral opening 54 crossed by the projectingappendage 13. - The
connection tooth 14 is engaged in theseat 53. - In particular, the
connection portions 114 are kept close together thanks to the pressure exerted by the walls of theseat 53. - Consequently, the action of the elastic force which tends to move the
connection portions 114 away from each other creates favorable conditions for the stabilization of theconnection tooth 14 in theseat 53. - Each
plate 11 comprises a plurality ofseats 53 arranged around the center of the plate itself. - Each
seat 53 is associated with a respective projectingappendage 13. - In particular, considering two
adjacent seats 53, oneseat 53 is associated with a projectingappendage 13 of aplate 11, theother seat 53 is associated with a projectingappendage 13 of theother plate 11. - A third embodiment of the travel suitcase is totally similar to the second embodiment described above, and differs in that it comprises a first terminal portion 191a associated with the
sidewall 9a and a second terminal portion 191b associated with theother sidewall 9b, and wherein at least one of the first terminal portion 191a and the second terminal portion 191b is without theextreme head 193. - In particular, the second terminal portion 191b is without the
extreme head 193. This makes it easier to insert theannular support body 50 during assembly. - The
elongated body 192 acts as a shoulder for therespective plate 11, making it easier to position. - A fourth embodiment of the travel suitcase, for simplicity not shown in the illustrations, is totally similar to the third embodiment described above, and differs in that it comprises a
sidewall 9 withoutterminal portion - In this case, there is no shoulder for the
plate 11. - A fifth embodiment of the travel suitcase, for simplicity not shown in the illustrations, is totally similar to the second, third and fourth embodiments described above, and differs in that a
plate 11 forms with the annular support body 50 a single body piece insertable in the annular rollingtread 7. - The present invention also relates to a method for assembling a travel suitcase made according to the characteristics illustrated above, of which reference numerals will be maintained for simplicity of exposure.
- Initially, it is envisaged to mount the annular rolling
tread 7 peripherally around theannular support body 50, with theretention crest 52 interposed, after assembly, between the internal faces of the twosidewalls 9 of the annular rollingtread 7. - At this point, two
bearings 15 are inserted in the throughseat 51 of theannular support body 50 starting from the two opposite ends of the throughseat 51 itself (i.e. starting from the two faces of the annular support body 50) until each bearing 15 is brought to stop against arespective shoulder 56 of theannular support body 50. - It is therefore possible to mechanically couple each
retention plate 11, in particular first one then the other in succession, to theannular support body 50. - During this coupling, the
peripheral portion 110 of theplate 11 is placed in abutment against theexternal face 90B of acorresponding sidewall 9 of the annular rollingtread 7, to compress the latter in a retention relationship against thecrest 52 of theannular support body 50. - This mechanical coupling provides to insert the projecting appendage 13 (and preferably the at least two projecting appendages 13) of each of the two
retention plates 11 into thecorresponding seat 53 made in theannular support body 50, until theconnection tooth 14 of the projectingappendage 13 engages a instep 55 of theseat 53. - At this point the hub is already assembled and a
pin 6 can be forcibly inserted in the holes of the twobearings 15 to fix the pin to their internal ring. Advantageously thepin 6 and the internal ring will be fixed and the external ring of the bearings will rotate and therefore theannular support 50 with it, the annular rollingtread 7 and the twoplates 11. - Finally, the
wheel 4 thus assembled is mounted on thecontainment body 2 of the suitcase, by engaging thepin 6 in seats of a fork element integral with thecontainment body 2 of the suitcase itself. - In a known manner the fork is generally made of a single body piece with a shaped corner piece or a support foot of the
containment body 2 and supports the pin which in turn supports thewheel 4 in a revolving manner. - The invention thus conceived achieves therefore the intended objects.
Claims (15)
- Travel suitcase, which comprises:- a rigid or semi-rigid containment body (2);- two or more wheels (4) mechanically associated with said containment body (2)susceptible of advancing on the ground and each comprising:- a hub (5) connected by means of a pin (6) to said containment body (2), and- an annular rolling tread (7), susceptible of coming into contact with the ground, externally mounted on said hub (5) and delimiting an internal air chamber (8) by means of two sidewalls (9) of which at least one sidewall having a terminal portion (91, 191) and a curved connector portion (10);- at least one handle (3) for pulling said suitcase (1) with the wheels (4) that advance on the ground;characterized in that said hub (5) comprises:- an annular support body (50) provided with a through seat (51) orthogonal to the radial extension of the annular support body (50) and with a radially projecting retention crest (52), positioned so as to close said air chamber (8);- at least one retention plate (11), mechanically coupled to said annular support body (50) by means of anchorage means (12) and provided with one peripheral portion (110) interacting with said terminal portion (91, 191) of at least one sidewall (9) of said annular rolling tread (7), in order to keep the latter in a retention relationship against the crest (52) of said annular support body (50).
- Travel suitcase according to claim 1, characterized in that said hub (5) comprises:- an annular support body (50) provided with a through seat (51) orthogonal to the radial extension of the annular support body (50) and with a radially projecting retention crest (52), interposed between the internal faces of the two sidewalls (9) of said annular rolling tread (7), to close said air chamber (8);- two retention plates (11), mechanically coupled to said annular support body (50) by means of anchorage means (12) and provided with two peripheral portions (110) placed in abutment against the external face (90B) of the two sidewalls (9) of said annular rolling tread (7), in order to compress the latter in a retention relationship against the crest (52) of said annular support body (50).
- Travel suitcase according to claim 1, characterized in that said anchorage means (12) comprise:- at least one projecting appendage (13), which extends from a central portion (111) of each of said retention plates (11), in a single body therewith and is provided at the free end with a connection tooth (14), and- at least one seat (53) made in said annular support body (50) and provided with a lateral opening (54) crossed by said projecting appendage (13) and with a step (55) engaged by the connection tooth (14) of said projecting appendage (13).
- Travel suitcase according to one or more of the preceding claims, characterized in that said hub (5) comprises at least one bearing (15) mounted in the through seat (51) of said annular support body (50) against a shoulder (56) of the latter.
- Travel suitcase according to one or more of the preceding claims, characterized in that the seats (53) of said support body (50) are preferably provided offset on the two lateral faces thereof, in order to receive the projecting appendages (13) of the two opposite said retention plates (11).
- Travel suitcase according to one or more of the preceding claims, characterized in that the retention crest (52) of said annular support body (50) has substantially frustoconical shape and the sidewalls (9) of said annular rolling tread (7) are tapered towards the free end thereof.
- Travel suitcase according to one or more of the preceding claims, characterized in that the sidewalls (9) of said annular rolling tread (7) have external faces (90B) that are substantially parallel to each other and internal faces (90A) that are tilted with respect to the middle plane of the wheel (4) with equal tilt of the lateral surfaces of said crest (52).
- Travel suitcase according to one or more of the preceding claims, characterized in that the external faces (90B) of the sidewalls (9) of said annular rolling tread (7) each have an internal lowered terminal portion (91) defining an annular recess in which a corresponding peripheral portion (110) of said retention plate (11) is inserted at least partially embedded.
- Travel suitcase according to any one of the dependent claims, characterized in that the curved portion (10) of said annular rolling tread (7) has reduced thickness with respect to that of the sidewalls (9) of the same annular rolling tread (7) and in particular it has thickness smaller than or equal to half the thickness of said sidewalls (9).
- Travel suitcase according to claim 1, characterized in that at least said terminal portion (191) comprises an elongated body (192) which extends towards the centre of said annular rolling tread (7) and an extreme head (193) which is bigger than said elongated body (192).
- Travel suitcase according to one or more of the preceding claims, characterized in that said retention plate (11) comprises a retention recess (194) in which said extreme head (193) can be fitted to measure.
- Travel suitcase according to one or more of the preceding claims, characterized in that said annular support body (50) comprises at least one slot (195) obtained in the proximity of said retention crest (52) and in which said extreme head (193) can be fitted to measure.
- Travel suitcase according to one or more of the preceding claims, characterized in that it comprises a first terminal portion (191a) associated with one of said sidewalls (9) and a second terminal portion (191b) associated with the other of said sidewalls (9), at least one of said first terminal portion (191a) and said second terminal portion (191b) being without said extreme head (193).
- Travel suitcase according to one or more of the preceding claims, characterized in that said anchorage means (12) comprise:- at least one projecting appendage (13), which extends from a central portion (111) of each of said retention plates (11), in a single body piece with these and has, at the free end, a connection tooth (14) provided with two elastically approachable connection portions (114), and- at least one seat (53) made in said annular support body (50), provided with a lateral opening (54) crossed by said projecting appendage (13), and in which said connection tooth (14) is engaged.
- Method for assembling a travel suitcase according to claims 1, 2 or 3, characterized in that it provides for:- mounting said annular rolling tread (7) peripherally around said annular support body (50), with the retention crest (52) interposed between the internal faces of the two sidewalls (9) of said annular rolling tread (7);- inserting two bearings (15) in the through seat (51) of said annular support body (50) starting from the two opposite ends of said through seat (51) until each said bearing is brought against a respective shoulder (56) of said annular support body (50);- mechanically coupling each retention plate (11), in particular in succession, to said annular support body (50) with the peripheral portion (110) thereof that is placed in abutment against the external face (90B) of a sidewall (9) of said annular rolling tread (7), in order to compress the latter in a retention relationship against the crest (52) of said annular support body (50); said mechanical coupling providing to insert said at least one projecting appendage (13) of each of said retention plates (11) in the corresponding seat (53) made in said annular support body (50) until the connection tooth (14) of said projecting appendage (13) is engaged in a step (55) of said seat (53);- forcibly inserting a pin (6) in the holes of said bearings (15) in order to fix said pin (6) to the internal ring of said bearings (15);- mounting the wheel thus assembled on the containment body (2) of said suitcase by engaging the pin in seats of a fork element integral with said containment body (2).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT102017000061850A IT201700061850A1 (en) | 2017-06-06 | 2017-06-06 | TRAVEL SUITCASE AND METHOD FOR ITS ASSEMBLY |
PCT/IB2018/052804 WO2018224896A1 (en) | 2017-06-06 | 2018-04-23 | Travel suitcase and method for assembling it |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3664659A1 EP3664659A1 (en) | 2020-06-17 |
EP3664659B1 true EP3664659B1 (en) | 2021-08-18 |
Family
ID=60294142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18726855.2A Active EP3664659B1 (en) | 2017-06-06 | 2018-04-23 | Travel suitcase and method for assembling it |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3664659B1 (en) |
CN (1) | CN110708980A (en) |
ES (1) | ES2898322T3 (en) |
IT (1) | IT201700061850A1 (en) |
WO (1) | WO2018224896A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT202200005981A1 (en) * | 2022-03-25 | 2023-09-25 | Adriano Bucchia | WHEEL FOR WHEELED VEHICLES, PARTICULARLY OF THE TYPE OF SUITCASES, TROLLEYS, SHOPPING TROLLEYS, STROLLERS, PRAMS AND SIMILAR |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016142919A1 (en) * | 2015-03-11 | 2016-09-15 | Joy Distribuzione S.R.L. | Travel suitcase |
-
2017
- 2017-06-06 IT IT102017000061850A patent/IT201700061850A1/en unknown
-
2018
- 2018-04-23 EP EP18726855.2A patent/EP3664659B1/en active Active
- 2018-04-23 ES ES18726855T patent/ES2898322T3/en active Active
- 2018-04-23 CN CN201880037542.2A patent/CN110708980A/en active Pending
- 2018-04-23 WO PCT/IB2018/052804 patent/WO2018224896A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
EP3664659A1 (en) | 2020-06-17 |
CN110708980A (en) | 2020-01-17 |
IT201700061850A1 (en) | 2018-12-06 |
WO2018224896A1 (en) | 2018-12-13 |
ES2898322T3 (en) | 2022-03-07 |
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