GALLEY CART LOCKING MECHANISM AND METHOD OF USE THEREOF
A galley cart for moving along a passenger aisle of a vehicle is presented, the galley cart comprising a body comprising an upper portion, a lower portion, a right lateral portion, a left lateral portion and a door opening, the galley cart comprising wheels attached to the lower portion for supporting the body, a door pivotally attached to the body and adapted to mate with the door opening, and a locking mechanism operatively associated with the door, the locking mechanism comprising a first door-locking portion, and a second door-locking portion, each door-locking portion locking independently the door to the body when the door is closing the door opening. A securing mechanism and a method of use is also presented.
The present invention relates to and claims priority from U.S. Provisional Patent Application No.: 62/141,570, filed Apr. 1, 2015, entitled TROLLEY DOOR LOCKING MECHANISM AND METHOD OF USE THEREOF, which is incorporated herein by reference.
FIELD OF THE INVENTIONThis invention relates generally to a locking mechanism for a galley cart for moving objects. The present invention relates more precisely to a door locking mechanism for a galley cart for use in an airplane, or another vehicle, that can include a redundant door locking mechanism.
BACKGROUND OF THE INVENTIONGalley carts are generally used in the transportation industry for moving goods and other articles. Galley carts can be used in critical environments like in the aeronautical industry and are subject to safety requirements.
These requirements are intended to define the design and the use of galley carts to increase the safety of the people using them and also for the safety of the public. Galley carts used in aircrafts are subjected to many technical requirements that must be considered closely. Among others, mechanical resistance and fire resistance requirements are mandatory and have a direct effect on the design and the choice of material that can be used to manufacture the galley cart.
The design and the construction of galley carts benefit from innovation in connection with various elements thereof. One of the elements that would benefit from innovative structure would be the door locking mechanism of the galley cart. The door locking mechanism might cause some safety issue if it becomes defective.
It is therefore desirable to provide an improved door locking mechanism over the existing art. It is also desirable to provide an improved locking mechanism that would not be jeopardized and unlocked by a shock in a direction over the existing art.
It is desirable to provide an improved door locking mechanism that would use a structure that not be jeopardized by the rupture of an element therein by using redundancy therein. It is therefore desirable to provide an improved door locking mechanism that would indicate to a user that the locking mechanism, or a redundant element therein, is not working properly.
Other deficiencies will become apparent to one skilled in the art to which the invention pertains in view of the following summary and detailed description with its appended figures.
SUMMARY OF THE INVENTIONThe following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. This summary is not an extensive overview of the invention. It is not intended to identify key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concepts of the invention in a simplified form as a prelude to the more detailed description of exemplary embodiments that is presented later.
Therefore, one aspect of the present invention improves at least some of the deficiencies associated with the drawbacks identified above.
It is one aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a redundant door locking mechanism.
It is one aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a door locking mechanism with self-locking capability when closing the door.
It is one aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a mechanism indicating to a user whether a galley cart door locking mechanism is correctly engaged or not.
It is an aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a mechanism indicating to a user whether a galley cart double door locking mechanism is correctly engaged or not.
It is an aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a mechanism indicating to a user whether a galley cart independent double door locking mechanism is correctly engaged or not correctly engaged.
It is an aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a warning mechanism indicating to a user whether a galley cart independent double door locking mechanism is correctly engaged or not, the warning mechanism being independent of the double door locking mechanism.
It is an object of our work to provide, in accordance with at least one embodiment thereof, a galley cart with a warning mechanism using the position of the door locking handle to indicate to a user whether a galley cart independent double door locking mechanism is correctly engaged or not.
It is an aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart with door locking mechanism secured to a galley cart door frame for mechanically securing the door locking mechanism secured to a galley cart door frame hence increasing the mechanical strength of the door assembly.
It is an aspect of our work to provide, in accordance with at least one embodiment thereof, a galley cart for moving along a passenger aisle of a vehicle is presented, the galley cart comprising a body comprising an upper portion, a lower portion, a right lateral portion, a left lateral portion and a door opening, the galley cart comprising wheels attached to the lower portion for supporting the body, a door pivotally attached to the body and adapted to mate with the door opening, and a locking mechanism operatively associated with the door, the locking mechanism comprising a first door-locking portion, and a second door-locking portion, each door-locking portion locking independently the door to the body when the door is closing the door opening.
It is an aspect of our work to provide, in accordance with at least one embodiment thereof, a door locking mechanism for selectively locking a door of a galley cart for moving along a passenger aisle of a vehicle, the galley cart comprising a body comprising an upper portion, a lower portion, a right lateral portion, a left lateral portion, and a door opening, the galley cart comprising wheels attached to the lower portion for supporting the body, and a door pivotally attached to the body and adapted to mate with the door opening, the locking mechanism comprising a first door-locking portion, and a second door-locking portion, each door-locking portion locking independently the door to the body when the door is closing the door opening.
These and other advantages and features of the present invention will become apparent from the following description and the attached drawings.
The present invention is now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It may be evident, however, that the present invention may be practiced without these specific details. In other instances, well-known structures and devices are shown in schematic form in order to facilitate describing the present invention.
A galley cart 10 adapted to carry goods in accordance with an embodiment of the invention is illustrated in
The upper portion 18, the right lateral portion 22, the left lateral portion 26 and the bottom portion 30 of the body 14 are connected together to obtain a strong unified structure. Illustrative embodiments described herein are using a variety of junction members 36 to interconnect adjacent portions 18, 22, 26, 30. The body 14 of the illustrated embodiment is forming a hollowed structure having four planar side portions 18, 22, 26, 30. It can be appreciated that the wall thickness of the different portions 18, 22, 26, 30 can have different thicknesses adapted to sustain the specific mechanical loads applied thereto. In other words, the assembled construction 32 of the galley cart 10 can be optimized to only use the required material at the right place and therefore reduces the weight while providing the appropriate mechanical resistance. For example, the panel of the upper portion 18 can have a thinner wall section than the panel of the bottom portion 30 because the upper portion 18 does not bear the weight of the entire galley cart 10. Additional details about the construction of the body 14 will be provided below.
The galley cart 10 illustrated in
Still referring to
The bottom portion 30 rests on a wheelbase 140 adapted to pivotally secure thereto a set of four (4) of caster wheels 144. Two pedals 148 are also pivotally secured to the wheelbase 140 to selectively lock or unlock the caster wheels 144 to immobilize the galley cart 10 when required.
A tablet module 110 is optionally secured inside the body 14, adjacent to the upper portion 18. The tablet module 110 comprises an extendable tablet/receptacle 114. The extendable tablet 114 is moveable between a closed position 122 and an opened position 126 as it can better be appreciated in
The full size galley cart 10 illustrated in
As it is illustrated, the reduced size galley cart 180 of the present embodiment is about half the length of the full size galley cart 10. This is mainly obtained by reducing the length 28 of the body 14 and includes a single tablet module 110 on one longitudinal side of the body and a single door 50. The longitudinal side of the body opposed to the door 50 is closed with a back portion 184, not illustrated in the Figures although a skilled reader will infer from the Figures there is a single door. The reduced size galley cart 180 is shown semi-exploded in
Moving now to
The pair of longitudinal engaging members 82 includes a plurality of engaging portions 204. The engaging portions 204 can be embodied in plastic or alternatively in metallic material such as aluminum or steel to ensure it is strong enough to sustain the loads generated by the engagement of the engaging portions 204 with corresponding engaging member receivers 86. Each hook-engaging portion 204 is embodied as a pair of opposed engaging portions 204 because the longitudinal engaging member 82 is used to engage the engaging member receivers 86 on both sides when translated in each of the two opposed directions. This way, only one longitudinal engaging member 82 design is required for engaging the engaging member receivers 86 in both locations, above and below each engaging member receiver 86, to accommodate the opposite movements of the longitudinal engaging member 82.
As better seen in
One can appreciate from
A reader skilled in the art can appreciate the two engaging members 82 are actuated in opposite vertical directions by a pivotal of the locking handle 74. With reference to the illustrated embodiment, a vertical upward pivotal of the locking handle 74 is going to rotate the first branch of the upper engaging members 82 upward and the first branch of the lower engaging members 82 downward, unlocking the engaging members 82 from their respective corresponding engaging member receivers 86. In contrast, a vertical downward pivotal of the locking handle 74 is going to rotate the first branch of the upper engaging members 82 downward and the first branch of the lower engaging members 82 upward, unlocking the engaging members 82 from their respective corresponding engaging member receivers 86. In both configurations, the red color of the signal portions 232 is going to be visible from the information window 244 informing a viewer the locking mechanism of the door 50 is in the unlocked position. In both of the above configurations, when the engaging members 82 are in their unlocked position, the red portion 256 of the signal portion 232 is displayed through the information window 244. A viewer will understand the engaging members 82 are in their unlocked position.
Leaving the locking handle 74 in its horizontal position is not biasing the engaging members 82 against their respective spring 224 and keeps the engaging members 82 in a locked position engaging their respective engaging member receivers 86. In that state, when the engaging members 82 are in their respective locked position, the green portion 252 of the signal portion 232 is displayed through the information window 244. A viewer will understand the engaging members 82 are in their locked position.
The illustrated embodiment is constructed in a way the two engaging members 82 are moving in their respective unlocked position with opposed vertical movements thereof. For instance, the upper engaging member 82 is moving in its locked position with an upper movement thereof while the lower engaging member 82 is moving in its locked position with a downward movement thereof. In contrast, the upper engaging member 82 is moving in its locked position with a downward movement thereof while the lower engaging member 82 is moving in its locked position with an upward movement thereof. This brings a significant advantage in a situation where the galley cart 10 would be subjected to a flight load (hypothetically) strong enough to cause a vertical movement of the engaging members 82 in a direction adapted to unlock the engaging member 82, at least one of the engaging members 82, the other engaging member 82, is going to remain in its locked position because the two engaging members 82 are actuated to be unlocked in opposite vertical directions.
Independent engaging members 82 and associated pivotal lock members 78 is another particularity of the embodied locking mechanism 176. The independent engaging members 82 and associated pivotal lock members 78 ensure a malfunction of one of the engaging members 82 and associated pivotal lock members 78 is not going to cause a malfunction of the other engaging member 82 and associated pivotal lock member 78.
It can also be appreciated in
Mechanism failure scenarios are illustrated in
Two mechanism failure scenarios are respectively illustrated in
Another embodiment of the locking mechanism 56 is presented in
It can be appreciated from
A flow chart of a typical behavior of the locking mechanism 56 informing a user of the door locking status is depicted in
Another flow chart of a typical behavior of the locking mechanism 56 informing a user of the door locking status is depicted in
The description and the drawings that are presented above are meant to be illustrative of the present invention. They are not meant to be limiting of the scope of the present invention. Modifications to the embodiments described may be made without departing from the present invention, the scope of which is defined by the following claims:
Claims
1. A galley cart for moving along a passenger aisle of a vehicle, the galley cart comprising:
- a body comprising an upper portion; a lower portion; a right lateral portion; a left lateral portion; and a door opening; the galley cart comprising
- wheels attached to the lower portion for supporting the body;
- a door pivotally attached to the body and adapted to mate with the door opening; and
- a locking mechanism operatively associated with the door, the locking mechanism comprising a first door-locking portion; and a second door-locking portion, each door-locking portion locking independently the door to the body when the door is closing the door opening.
2. The galley cart of claim 1, wherein the first door-locking portion is locking an upper portion of the door to the body and the second door-locking portion is locking a lower portion of the door to the body.
3. The galley cart of claim 1, wherein the first door-locking portion includes a first engaging member for locking the door to the body, and the second door-locking portion includes a second engaging member for locking the door to the body, the two engaging members being actuable independently for locking the door to the body.
4. The galley cart of claim 3, wherein pivoting the door to close a door opening is engaging an engaging portion of the engaging member with a corresponding engaging member receiver secured to the body without manual actuation of a handle of the locking mechanism.
5. The galley cart of claim 3, wherein the engaging members are slidably housed in a peripheral frame of the door.
6. The galley cart of claim 3, wherein an engaging portion of the first engaging member is engaging with the corresponding engaging member receiver secured to the body, when moving in a first direction, and the second engaging member is engaging with the corresponding engaging member secured to the body, when moving in a second direction opposed to the first direction.
7. The galley cart of claim 3, wherein an actuating member actuates a pair of lock members pivotably secured on a first side and operatively connected to respective engaging members on a second side.
8. The galley cart of claim 1, wherein the locking mechanism includes a handle pivotably secured thereon, the handle pivoting the actuating member.
9. The galley cart of claim 1, wherein the locking mechanism handle includes a mechanism adapted to warn a user when one of the first door-locking portion and the second door-locking portion is not securing the door with the body.
10. The galley cart of claim 1, wherein the first door-locking portion is biased toward a locked configuration and the second door-locking portion is biased toward a locked configuration.
11. A door locking mechanism for selectively locking a door of a galley cart for moving along a passenger aisle of a vehicle, the galley cart comprising:
- a body comprising an upper portion; a lower portion; a right lateral portion; a left lateral portion; and a door opening; the galley cart comprising
- wheels attached to the lower portion for supporting the body; and
- a door pivotally attached to the body and adapted to mate with the door opening; the locking mechanism comprising
- a first door-locking portion; and
- a second door-locking portion, each door-locking portion locking independently the door to the body when the door is closing the door opening.
12. The door locking mechanism of claim 11, wherein the first door-locking portion is locking an upper portion of the door to the body and the second door-locking portion is locking a lower portion of the door to the body.
13. The door locking mechanism of claim 11, wherein the first door-locking portion includes a first engaging member for locking the door to the body, and the second door-locking portion includes a second engaging member for locking the door to the body, the two engaging members being actuable independently for locking the door to the body.
14. The door locking mechanism of claim 13, wherein pivoting the door to close a door opening is engaging an engaging portion of the engaging member with a corresponding engaging member receiver secured to the body without manual actuation of a handle of the locking mechanism.
15. The door locking mechanism of claim 13, wherein the engaging members are slidably housed in a peripheral frame of the door.
16. The door locking mechanism of claim 13, wherein an engaging portion of the first engaging member is engaging with the corresponding engaging member receiver secured to the body, when moving in a first direction, and the second engaging member is engaging with the corresponding engaging member secured to the body, when moving in a second direction opposed to the first direction.
17. The door locking mechanism of claim 13, wherein an actuating member actuates a pair of lock members pivotably secured on a first side and operatively connected to respective engaging members on a second side.
18. The door locking mechanism of claim 11, wherein the locking mechanism includes a handle pivotably secured thereon, the handle pivoting the actuating member.
19. The door locking mechanism of claim 11, wherein the locking mechanism handle includes a mechanism adapted to warn a user when one of the first door-locking portion and the second door-locking portion is not securing the door with the body.
20. The door locking mechanism of claim 11, wherein the first door-locking portion is biased toward a locked configuration and the second door-locking portion is biased toward a locked configuration.
Type: Application
Filed: Mar 31, 2016
Publication Date: Oct 6, 2016
Inventors: Mathieu BOIVIN (Montreal), Omar PERTEW (Montreal), Martin BELANGER (Montreal), Robert LAVIGNE (Sainte-Marthe-sur-le-Lac)
Application Number: 15/087,157