GB2550300A - Hatch assembly - Google Patents
Hatch assembly Download PDFInfo
- Publication number
- GB2550300A GB2550300A GB1711111.3A GB201711111A GB2550300A GB 2550300 A GB2550300 A GB 2550300A GB 201711111 A GB201711111 A GB 201711111A GB 2550300 A GB2550300 A GB 2550300A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hatch
- assembly
- linkage
- actuation mechanism
- outer frame
- 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.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 47
- 230000000694 effects Effects 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000013536 elastomeric material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940072293 axid Drugs 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- SGXXNSQHWDMGGP-IZZDOVSWSA-N nizatidine Chemical compound [O-][N+](=O)\C=C(/NC)NCCSCC1=CSC(CN(C)C)=N1 SGXXNSQHWDMGGP-IZZDOVSWSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
- B63B19/12—Hatches; Hatchways
- B63B19/24—Hatch fastenings, e.g. cleats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
- B63B19/12—Hatches; Hatchways
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
- E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
- E05F11/08—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with longitudinally-moving bars guided, e.g. by pivoted links, in or on the frame
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
- E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
- E05F11/08—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with longitudinally-moving bars guided, e.g. by pivoted links, in or on the frame
- E05F11/12—Mechanisms by which the bar shifts the wing
- E05F11/16—Mechanisms by which the bar shifts the wing shifting the wing by pivotally-connected members (moving) in a plane perpendicular to the pivot axis of the wing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/20—Brakes; Disengaging means; Holders; Stops; Valves; Accessories therefor
- E05Y2201/218—Holders
- E05Y2201/22—Locks
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2201/00—Constructional elements; Accessories therefor
- E05Y2201/60—Suspension or transmission members; Accessories therefor
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/686—Rods, links
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/50—Application of doors, windows, wings or fittings thereof for vehicles
- E05Y2900/514—Application of doors, windows, wings or fittings thereof for vehicles for ships
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
Abstract
A hatch assembly 110 including a cover 112 with a frame assembly including an outer frame 120 and an inner frame 124 situated radially inwardly of the outer frame 120 and releasably secured thereto by releasable securing means 130. Release of the securing means allows the outer frame to be released from other parts of the hatch assembly to allow the hatch assembly to be opened while leaving the outer frame secured. The application also discloses a hatch assembly (2, Fig 6) which includes a hatch (6, Fig 6) and an actuation mechanism (4, Fig 6) configured to firstly open and close the hatch and secondly lock the hatch in a closed position. The hatch has two opposed sides (8, Fig 6) each bearing two spaced hatch camming surfaces (38, Fig 6), the actuation mechanism including a linkage (46, Fig 6) adjacent each side of the hatch. Each linkage is connected to the adjacent side of the hatch for opening and closing the hatch and bearing linkage camming surfaces (68 and 76, Fig 7) are arranged to engage the hatch camming surfaces, to effect locking of the hatch.
Description
HATCH ASSEMBLY
[0001] The present invention relates to a hatch such as a hatch typically installed in the deck of a yacht to permit entrance to and exit from an interior of a hull of the yacht.
[0002] Historically^ such hatches^ for closing a hatch aperturef have simply been connected to a deck of the yacht along one edge of the hatch by a hinge or hinges and include handies located adjacent to an opposite edge which are rotatable so as to engage complementary parts mounted to an edge of the hatch aperture. Rotation of the handle draws the hatch downwards so as to effect a seal between a perimeter of the hatch and a perimeter of the hatch aperture. With the ever increasing trend to automate yacht equipment; hatches have been designed which use remotely actuable actuation means to open and close such hatches. There exists a problem however with such automatic hatches in that the actuation mechanism that they use for opening and closing of the hatches do not effect good sealing of the hatch against the perimeter of the hatch aperture. Either a separate mechanism needs to be provided for drawing the hatch downwards with sufficient force to effect sealing and to lock the hatch or the actuation mechanism is undesirably complex, [0003] A danger associated with the automatic opening and closing of a hatch; used for example on a yacht; is that if an associated actuation mechanism becomes disabled for some reason it is possible that the hatch may not be easily openable which poses a safety hazard. Such disabling could occur for example in the event of a loss of electrical or hydraulic power and/or an. actuator jamming. Even for a hatch which is opened and closed manually, if catches used to hold the hatch closed are lockable then the non-aYailability of means to unlock the catches could also provide a safety hazard, [0004] An object of the invention is to provide a hatch which overcomes the above probleras, [0005] Thus according to the invention there is provided a hatch assembly having an interior surface arranged to face an interior of a space closed by the hatch assembly, the hatch assembly including a cover with a frame assembly including an outer frame configured to be drawn in a direction that the interior surface faces and secured to secure the hatch in a closed position, the frame assembly also including an inner frame situated radially inwardly of the outer frame and releasably secured thereto by releasable securing means wherein release of the securing means allows the outer frame to be released from other parts of the hatch assembly to allow the hatch assembly to be opened while leaving the outer frame secured.
[0006] With the hatch assembly according to the invention, regardless of how the hatch is secured in its closed position and regardless of whether any hatch actuating mechanism has become disabled for any reason, it will be possible for a person in the space closed by the hatch to escape from the hatch by releasing the securing means and opening the majority of the hatch, including the cover, while leaving the outer frame in its closed position.
[0007] Preferably the hatch assembly includes at least one hinge connected, directly or indirectly, to that cover but not directly connected to the outer frame.
[0008] In order to facilitate rapid release of the outer frame from, other parts of the hatch assesublvj preferably the outer frame is only connected to other parts of the hatch assembly by means of the releasable securing m.eans, [0009] Preferably the releasable securing means ooraprises plural screw--threaded fasteners which will allow the securing means to be easily re-'-installsd to connect the inner and outer frames back together if this is required after their release has been effected. Furthermore? such release means can be easily released by someone not having knowledge of any particular release techniques and possibly under difficult circumstances ..
[0010] Conveniently each screw-threaded fastener passes through a clearance hole in the inner frame and engages a screw-threaded hole in the outer frame. With this arrangementf engagement of the screw-threaded fastener in the clearance hole in the inner frame will automatically align the screw“threaded fastener with the screw'-threaded hole in the outer frame thereby facilitating its engagement therewith.
[0011] Preferably the cover includes a peripheral sealing region situated radially outwardly of an interface between the inner frame and the outer frame. This will keep rain and seawater away from, an interface between the inner and outer frames and mean that no seal will need to be provided therebetween, [0012] More preferably the peripheral sealing region is situated outwardly of the outer frame in order that parts of the hatch assembly positioned outwardly of the outer frame (such as a hatch actuating mechanism) can also be protected from rain and seawater. section cross-section but other forms could be used. The frame includes a frame side 18 positioned inwardly of each side 8 of the hatch. While the frame shown in Fig. 1 is a closed frame extending continuously around the bottom surface 14; the frame 16 need, not extend along all four sides of the hatch 6 and could for example extend around only three sides and not along a side of the hatch to which hinges 20 are connected for connecting the hatch to a hatch coaming 26 surrounding an aperture 22 that the hatch is designed to close. Each hinge 20 is provided with first fasteners 28 for connecting the hinge to the leaf 10 and/or the frame 16 and second fasteners 30 for connecting the hinge to the hatch coam.ing 26. An elongate sealing member 24; preferably of an elastomeric material; is connected to the bottom surface 114 and extends around the hatch for forming a seal between the leaf 10 and the hatch coaming 26.
[0046] Fig. 3 shows a top plan view of the actuation mechanism 4 with the hatch in its closed but unlocked configuration. The leaf 10 has been omitted from Fig. 3 for reasons of clarity. Figs, 4 and 7 show views on the lines C™ C and D-D in Fig. 3 of the hatch in the same configuration. Fig. 5 shows a view on the line Ε-Έ in Fig, 4. The components of the actuation mechanism 4 will first be described with particular reference to Figs. 3; 4, 5 and 7.
[004 7] On. an outer surface of the frame side 18; a pair of spaced wedges 32 are provided. These wedges 32 are mounted, on wedge plates 34 which are screwed to the frame side 18 by machine screws 36. An upper surface of each wedge 32 has an inclined surface which constitutes a hatch camming surface 3B. The wedges 32 are positioned adjacent ends of the associated frame side 18.
[0013] Preferably the peripheral sealing region is situated radially outwardly of a hatch actuation mechanism whereby sealing of the sealing region against a complimentary sealing surface prevents access of water to the hatch actuation rtiechanism, [0014] Preferably the cover comprises a sheet to an interior surface of which the inner frame is secured. This provides a robust construction which can be easily asserabied and enables the cover to be made economically from material normally supplied in the form of large sheets. More preferably,· the sheet from which the cover is made of is of substantially inflexible material such as glass or a slightly flexible acrylic material. This will ensure that good sealing of the cover can be achieved. Even more preferably, the sheet is at least partially transparent in order that the hatch assembly can let light into the space closed by the hatch.
[0015] Preferably a seal is connected to the interior surface of the sheet adjacent a periphery thereof. This means that the seal can be attached to the hatch assembly in a factory environment and can be attached easily and securely since it is being connected to an at least substantially fiat surface .
[0016] A hatch assembly to which the invention may be applied may comprise a hatch assembly including a hatch and an actuation mechanism configured to firstly open and close the hatch and secondly lock the hatch in a closed position, the hatch including two opposite sides each bearing two spaced hatch camming surfaces, the actuation irechanism including a linkage adjacent each side of the hatch, each linkage being connected to the adjacent side of the hatch for opening and closing the hatch and bearing linkage camming surfaces arranged to engage the hatch camming surfaces to effect locking of the hatcho By providing the camming surfaces on the linkages which move the hatch between its opened and closed positions^ which engage compiementary hatch camming surfaces^ the linkages can provide a dual function and not only move the hatch between its opened and closed positions but also provide a camming action which can draw the hatch downwardly into sealing engagement with a perimeter surrounding an opening that the hatch closes and lock the hatch in a closed and sealed configuration, [00171 Preferably each linkage includes first and second linksf first ends of which are connected by a pivotable interconnection and the actuation mechanism includes a support means aidjacent each side of the hatch Wiiich rotatably supports opposite second ends of the links. This arrangement provides robust and stable support for the hatch during its opening and in its final opened configuration, [0018] Preferably at each side of the hatch the pivotable interconnection of the first ends of the links is connected to the adjacent side of the hatch.
[0019] Preferably^ at each side of the hatch, the second ends of the links are translatably supported by the associated support means.
[0020] The actuation mechanism preferably includes linear actuation means connected to linearly displace the second ends of the first links. Since the second ends of the first links are translatably supported by the associated support means, the actuation means can, be conveniently accommodated below deck level and accordingly in a position where it will be protected from impact, damage and exposure to salt water and other aggressive agents.
[0021] Preferably the actuation mechanism includes an individual linear actuator connected to linearly displace the second end of the first link of each linkage. This arrangement permits an individual actuator to be neatly acconuTiodated, together with the linkage and other components at each side of the hatchf thereby minimising the extent to which the hatch assembly impinges on an interior space closed by the hatch assembly.
[0022J Preferably, at each side of the hatch, the support means is configured to permit translation of the second end of the first link by a first distance in order to displace the natch between opened and closed positions, [0023] Preferably, at each side of the hatch, the pivotable interconnection between the first ends of the first and second links is connected to the adjacent side of the hatch so as to be translatable by a second distance in order to displace the linkage camming surfaces into and out of engagement with the hatch caxivming surfaces. This arrangement provides a convenient means by which each linkage can be displaced to allow camming interaction between the linkage camming surfaces and the hatch camming surfaces and in addition permits the linkages to effect displacem.ent of the hatch between its opened and closed positions.
[0024] Preferably the first distance is greater than the second distance.
[0025] Preferably, at each side of the hatch, the actuation mechanism is configured such that displacement of the linear actuation means in a first opening direction, firstly displaces the linkage so that the linkage camming surfaces disengage from the hatch camming surfaces and then secondly reconfigures the linkage so that the hatch is opened.
[0026] Preferably, at each side of the hatch, the actuation mechanism, is configured such that, after disengagement of the camming surfaces, dispiacem,ent of the pivotable interconnection between the first ends of the first and second links is arrested by an abutm,ent which causes the commencement of the reconfiguring of the linkage to open the hatch. After disengagement of the camming surfaces, translation of the linkage m.ay be arrested by an abutment which causes the commencement of the reconfiguring of the linkage to open the hatch. The use of such an abutment has been found to be a convenient means of switching the actuation mechanism from its first function to disengage the camming surfaces to its second function to reconfigure the linkages to open the hatch.
[0027] Preferably, at each side of the hatch, the actuation mechanism is configured such that displacement of the linear actuation means in a second closing direction firstly recoxifigures the linkage so that the Viatch is closed and secondly displaces the linkage so that the linkage camming surfaces engage the hatch camming surfaces to lock the hatch in its closed position.
[0028] Preferably, at each side of the hatch, the actuation mechanism is configured such that the first and second links become at least substantially aligned with each other when the hatch reaches its closed position, whereafter further displacement of the linear actuation means in the second closing direction displaces the linkage so that the linkage camming surfaces engage the hatch camming surfaces to lock the hatch in, its closed position.
[0029] The alignment or substantial alignment of the first and second links of each linkage have been found to provide a convenient and, automatic switching of the actuation mechanism from its fuT'Ction of moving the hatch to its closed position to its function of causing the linkage and hatch camming surfaces to inter-engage.
[0030] Preferably the hatch includes a peripheral portion configured to sealingly engage around a hatch aperture.
[0031] With such an arrangesrent^ the seal can be arranged such that it keeps seawater and rain away from internal parts of the hatch assembly and in particular away from the actuation mechanism.
[0032] The invention will now be described by way of example only with reference to the attached drawings in which: [0033] Fig, 1 is a top plan view of a hatch assembly to which the invention could be applied; [0034] Fig. 2 is a cross-section on the line A-A of the hatch assembly shown in Fig. 1; [00 35] Fig, 3 is a view of the area marked B in F'ig. 1 showing an actuation mechanism at one side of the hatch used to open and close the hatch with the hatch in its closed but unlocked configuration; [0036] Fig. 4 is a view along the line C-C of Fig. 3 showing part of the actuation mechanism; [0037] Fig, 5 is a cross-section on the line Ε-Έ of the part of the actuation mechanism shown in Fig. 4; [0038] Fig. 6 is a side view of the hatch and actuation mechanism shown in Fig. 3 except with the hatch in its closed and locked configuration; [0039] Fig. 7 is a view similar to Fig. 6 except with the hatch in its closed but unlocked configuration; as shown in Fig. 3; [0040] Fig. 8 is a view similar to Fig, 6 except with the hatch in its opened configuration; [0041] Fig. 9 is a top plan view of a hatch assembly according to the invention; [0042] Fig. 10 is a cross-"section on the line F-F in Fig. 9 of the hatch assembly in its closed and locked configuration; [0043] Fig. 11 is a view similar to Fig. 10 except with the hatch assembly in its normal opened configuration; and [0044] Fig. 12 is a view similar to Fig, 10 except with the hatch asseiTtbly in its emergency opened configuraLion.
[0045] A hatch assembly 2 to which the invention could be applied is shown in Fig. 1 and Fig, 2 snows a cross-section on the line A-A in Fig, 1. An actuation mechanism 4, for opening and closing a hatch 6 of the assembly is situated at each side 8 of the hatch 6 but om.itted from Figs. 1 and 2 for the sake of clarity. The area occupied by the actuation mechanism 4 on the right-hand side of the hatch; as seen in Fig. if is designated by the dotted line marked B. A similar actuation mechanism will be provided on the left-hand side of the hatch 6 also. The hatch includes a leaf 10; which may be made of plastics material and may be transparent. The leaf 10 has a top surface 12 and a bottom surface 14. A frame 16 is connected to the bottom surface 14 by means which are not shown but could include screw-threaded fasteners and/or adhesive. The frame may be made from metal such as stainless steel or anodised aluminium. The frame has a hollow box- [0048] Approximately centrally positioned between the wedges 32 is a hatch driving plate 40 which is connected to the frame side IB by machine screws 42. The hatch driving plate 14 includes a hatch slot 44. The hatch slot 44 extends in a direction which is parallel to the leaf 10.
[0049] As shown in Fig. a linkage 46 is situation Outwardly of the wedges 32 and the hatch driving plate 40.
The linkage 46 includes a first link 48 and a second link 50. The first 48 and second 50 links have first ends 52 and 54 respectively which are rotatably interconnected by a hatch pivot 56. The hatch pivot 56 extends into and is slidable back and forth in the hatch slot 44. As shown in Fig. 3j the hatch pivot 52 comprises a nut 56 and bolt 60, The first 48 and second 50 links have second ends 53 and 55 respectively. The first link 48 is plate-like in form and L™shaped and includes a relatively long main leg 62 axid a relatively short leg 64 which projects perpendicularly from the main leg 62. A first link cam member 66 is connected to and projects from the short leg 64 towards the frame side 18, A lower surface of the first link cam member 66 constitutes a first link camming surface 68. The second link 50 is sim,ilarly formed and includes a main leg 70; a short leg 72^ a second link cam member 74 and a second link cas'sming surface 76.
[0050] On the first link 48; where the short leg 64 meets the main leg 62 at the second end 53; and on the opposite side of the first link 48 to that from which the first link cam member 66 projects; a first link pivot 78 projects. A second link pivot 80 extends in a like manner and from a like position from the second link 50.
[0051] As shown in Fig. 3; a support means 82 is provided whioh extends along the frame side 18 and supports the first 78 and second 80 link pivots. As shown in Engs. 4 and 5; the support means 32 has an inverted U-shapeo An inner limb 84 and an outer limb 86 of the support means 82 include aligned first slots 88 through which the first link pivot 78 extends. The inner limb 84 also includes a second slot 90 through which the second link pivot 30 extends, A linear actuator 92 is mounted with a longitudinal axis aligned with a longitudinal axis of the support means 82, As shown in Figs. 3 and a main body 34 of the actuator 92 projects from one end of the support means 82. A displaceable ram 96 of the actuator 92 extends from the main body 94 along an interior of the support means 82 and is connected to the first link pivot 78 inside the support means 82.
[0052] The m.anner in which the actuation mechanism 4 opens and closes the hatch will now be described. Figs. 7 and 8 show the three main stages of actuation. In Fig. 6 the hatch assembly is closed and locked;, in Fig. 7 the hatch assembly is closed but not locked and in Fig. B the hatch assembly is open. Slots 88 and 90 in support means 82 have been shown in broken lines in Figs, 6.. 7 and 8 to show their positions relative to link pivots 78 and 80 despite the fact that they would not be visible in section D-"D.
[0053] In the closed and locked configuration shown in Fig. 6j downward force, exerted by the camming surfaces 68 and 76 of the link cam members 66 and 74 on the hatch cariuring surfaces 33, hold the hatch in a closed and locked configuration with the sealing member 24 held firmly against the hatch coaming 26.
[0054] First the ram 96 is retracted a short second distance L2 in a first or opening direction labelled 0. As this occurs, the first 73 and second 80 link pivots slide to the left along the first 88 and second 90 slots of the support means 82 and the hatch pivot 56 slides to the left in the hatch slot 44, its this happens; the first 66 and second 74 link cam members are displaced to the left and out of engagement with the wedges 32. When the linkage 46 reaches the configuration shown in Fig, 7 the second link pivot 80 is arrested by contacting an abutment 98 constituted by an end of the second slot 90 and the hatch assembly is unlocked. Abutment may alternatively be provided by the hatch pivot 56 abating against an abutment 100 constituted by an end of the hatch slot 44.
[0055] As a consequence of the above described abutment; continued retraction of the ram 96 in the direction 0 results in further displacement of the first link pivot 78 along t;he first slot 88 a first distance LI. This causes the hatch pivot 56 to bear against an interior surface of the hatch slot 44 and raise the hatch to the opened position shown in Fig. 8. By selecting the lengths of the slots and links appropriately^ the extent to which the hatch can be opened can be determined. By altering the relative lengths of the first link 48 and the second link 50 the speed of opening and the mechanical advantage provided by the actuation mechanism can be altered. For example; wheri the hatch is heavier than normal; it may be advantageous for the first link 48 to be shorter than the second link 50, This will decrease the speed of opening and increase the mechanical advantage.
[0056] Closing and locking of the hatch will comprise reversal of the steps described above by extending the ram in a second or closing direction C.
[0057] Of particular note is the final locking stage in which the actuation mechanism moves from the configuration shown in Fig, 7 to that shown in Fig. 6. As this occurs; the hatch pivot 56 moves to the right in the hatch slot 44 and the link cam members 66 and 74 cammingly exi.qage the wedges 32 to draw the hatch down into its final locked and sealed configuration, [0058] Due to the fact that the short legs 64 and 72 of the linkage 46 project substantially upwardly when the hatch assembly is In its closed and locked configuration, as the links 48 and 50 are rotated to the open configuration shown in Fig, 8, the short legs 54 and 72, and thus the linkage cam members are rotated so as to project upwardly to a lesser extent thereby reducing the possibility of them snagging on items etc. being passed through the hatch aperture 22. The design of the actuation mechanism allows the natch assembly to have a low profile so that the cover can be arranged flush with a surrounding deck area while not projecting downwardly to an undesirable extent.
[0059] While the first 48 and second 50 links in the embodiment shown are of equal length, they could be selected to have different lengths.
[0060] While the linear actuator extends from the first link pivot away from the hinges 20, it could extend in the opposite direction in which case ram retraction would effect closing and locking of the hatch asserfibly.
[0061] It will be understood that an actuation mechanism as described above will be provided on each side of the hatch 6. The actuator(s) can be of any suitable type such as hydraulic or of an electric motor actuated screw thread type.
[0062] One important advantage of the actuation mechanism described is that the sequence of movements of the linkage is determined purely mechanically. For this reason, delicate electronic sensors and the like are not required to control changes from one part of the sequence to another. In an aggressive isarine environment this is highly advantageous.
[00 63] .Ά hatch assembly according to the invention will now be described with reference to Figs, 9 to 12, Fig, 9 shows the hatch assembly from above in its closed configuration. Fig, 10 shows a cross-section on the line F--F of the closed hatch shown in Fig, 9 and Fig. 10 shows a similar cross-section with the hatch in its normally opened configuration. Fig. 11 shows a similar cross-section with the hatch in its emergency opened configuration.
[0064] The hatch 110 includes a cover 112 in the form of a sheet which may be of plastics material and may be transparent. The cover 112 has an interior surface 114 adapted to face an interior 116 of a space closed by the hatch 110. The cover 112 hsis an edge 116 inwardly of which a seal 118 of elastomeric material is connected to the interior surface 114, Inwardly of the seal 118 is an outer frame 120. The outer frame 120 extends around the cover in the region of its edge 116 and is connected to the cover 112 by any suitable means such as threaded fasteners and/or adhesive.
The outer frame 120 may be continuous as shown or may extend around less than four sides of the cover^ for example around three sides of the cover. Adjacent a radially inner surface 122 of the outer frame 120 is an inner frame 124. In the embodiment shown^ the inner frame 124 is a closed frame which is a sliding fit inside the outer frame 120. Clearance holes 126 extend through the inner frame 124 and a screw-threaded hole in the outer frame is aligned with each clearance hole 126 in the inner frame 124. A screw-threaded fastener 130; constituting a releasable securing means; is provided which extends through each clearance hole to engage the corresponding screw-threaded hole in the outer frame 120.
Each screw-threaded fastener 130 has a head 132 configured to permit unscrewing by hand without the use of any hand tool. Both lateral sides of the inner frame 124 are secured, by a pair of screw-threaded fasteners 130. A different number and/or type of releasable fastener may however be used and they may be situated in different locations. For example the releasable fasteners may simply comprise push-fit pins with an appropriate head for facilitating manual extraction. The pins would be a friction fit in aligned holes in the inner and outer frames .
[0065] Hinges 134 are provided to connect one side of the hatch to a hatch coaming 135, On the opposite side of the hatch to the hingeSy one or more catches 138 are provided to secure the outer frame 120 to the hatch coaming 136. In the embodiment shown^ two catches 136 are provided, each comprising an exigagement member 14 0 which is selectively engagable with a slot 142 in the hatch coaming 136. Each engagexrent member 140 is rotatable by means of a handle 144 about a securing member 146 which is connected to the outer frarae 120, [0066] Normal opening of the hatch will be effected by first rotating each engagexaent mexaber 140 from the position shown on the left in Fig, 9, in which it engages its associated slot 142, to the position shown on the right in Fig, 9, in which the engagement member does xiot engage its associated slot. Then the hatch 110 will be pushed upwardly as shown in Fig, 11, During normal opening, the inner frame 124 remains secured to the outer frame 120 by the fasteners 130, [0067] Should the catches 136 be locked in the engaged position, as showj-s on the left in Fig. 9, and m.eax'xs of unlocking them not be readily available then it may be necessary, in an emerger’cy situation, to open the hatch using an em,ergency opening method. Such a requirement would also arise iff instead of having catches 138 such as those showrif the hatch included an automatic actuation mechanisirif such as that described in connection with the first embodiment described above and hydraulic and/or electrical power was not available to effect opening of the hatch or if the actuator became jammed. In such situations emergency opening of the hatch can be effecned by lUiScrewing and removing the fasteners 130 to release inner frame 124 and the cover 112 from, the outer frame 120. When this has been done, the inner frame 124 and the cover 112 can be rotated about hinges 134 leaving the outer frame 120 in its secured position as shown in F’ig. 12. This will permit emergency access through the hatch. If and when requiredf the inner frame 124 can be realigned with the outer frame 120 and re---secured thereto by means of the fasteners 130.
[0068] It should be noted that the position of the seal 118, radially outwardly of the outer frame 120, will mean that there will be no requirement for an interface between the inner and outer frames to be sealed. Furthermoref if a peripheral sealing region 148 of the cover 112 bearing the seal 118 extends far enough, it can be configured to cover, and seal against the ingress of water, a region in which a hatch actuation mechanism., such as the one described above, is accommodated.
[0069] While a particular embodiment of the invention has been described it will be understood that modifications may be mads thereto without departing from the scope of the appended claims.
Claims (25)
1. Hatch assemlDiy having an interior surface arranged to face axi interior of a space closed by the hatch assembly, the hatch assembly including a cover with a frame assembly including an outer frame configured to be drawn in a direction that the interior surface faces and secured to secure the hatch in a closed position, the frame assembly also including an inner frame situated radially inwardly of the outer frame and releasably secured thereto by releasable securing means wherein release of the securing means allows the outer frame to be released from other parts of the hatch assembly to allow the hatch assembly to be opened while leaving the outer frame secured.
2. The hatch assembly of claim 1 including at least one hinge connected to the cover but not directly connected to the outer frame.
3. The hatch assembly of claim 1 or 2 wherein the outer frame is only connected to other parts of the hatch assembly by means of the releasable securing means.
4. The hatch assembly according to claims 1, 2 or 3 wherein the releasable securing means comprises plural screw-threaded fasteners.
5. The hatch assembly of claim 4 wherein each screw-threaded fastener passes through a clearance hole in the inner frame and engages a screw-threaded hole in the outer frame.
6. The hatch assembly of any of claims 1 to 5 wherein the cover includes a peripheral sealing region situated radially outwardly of an interface between the inner frasre and the outer frame.
7. The hatch assembly of claira 6 wherein the peripheral sealirig region is situated outwardly of the outer frame.
8. The hatch assembly of claim. 7 wherein the peripheral sealing region is situated radially outwardly of a hatch actuation mechanism whereby sealing of the searing region against a complementary sealing surface prevents access of water to a hatch actuation mechanism.
9. The hatch assembly according to any of claims 1 to 8 wherein the cover comprises a sheets to an interior surface of which the inner frame is secured.
10. The hatch assembly according to claim 9 wherein the sheet is substantially inflexible,
11. The hatch assembly according to claim 9 or 10 wherein the sheet is at least partially transparent.
12. The hatch assembly according to claim 9y 10 or 11 wherein a seal is connected to the interior surface of the sheet adjacent a periphery thereof.
13. A hatch assembly according to any preceding claim wherein the hatch assembly includes a hatch and an actuation mechanism configured to firstly open and close the hatch and secondly lock the hatch in a closed position, the hatch including two opposed sides each bearing two spaced hatch camming surfaces, the actuation mechanism including a linkage adjacent each side of the hatch, each linkage being connected to the adjacent side of the hatch for opening and closing the hatch and bearing linkage camming surfaces arranged to engage the hatch camraing surfaces to effect locking of the hatch.
14. The hatch assembly of claim 13 wherein each linkage includes first and second links, first ends of which are connected by a pivotable interconnection and the actuation mechanism includes a support means adjacent each side of the hatch which rotatably supports opposite second ends of the links.
15. The hatch assembly of claim 14 wherein^ at each side of the hatch, the pivotable interconnection of the first ends of the links is connected to the adjacent side of the hatch.
16. The hatch assembly of claim 14 of 15 wherein^ at each side of the hatch^ the second ends of the links are translatably supported by the associated support means.
17. The hatch assembly of claim 14, 15 or 16 wherein the actuation mechanism includes linear actuation means connected to linearly displace the second ends of the first links .
18. The hatch assembly of claim 17 where in the actuation mechanism includes an individual linear actuator connected to linearly displace the second end of the first link of each linkage.
19. The hatch assembly of claim 16 wherein, at each side of the hatch, the support means is configured to permit translation of the second end of the first link by a first distance in order to displace the hatch between opened and closed positions.
20. The hatch assembly of clainis 15 and 19 whereinf at each side of the hatch^ the pivotable interconnection between the first ends of the first and second links is connected to the adjacent side of the hatch so as to be translatable by a second distance in order to displace the linkage cajnming surfaces into and out of engagement with the hatch camming surfaces.
21. The hatch assembly of claims 19 and 20 wherein the first distance is greater than the second distance.
22. The hatch assembly of claim 17 or any claim depending thereon whereiri; at each side of the hatchj, the actuation mechanism is configured such that displacement of the linear actuation means in a first opening direction firstly displaces the linkage so that the linkage camming surfaces disengage from, the natch camming surfaces and then secondly reconfigures the linkage so that the hatch is opened.
23. The hatch assembly of claims 14 and 22 wherein^ at each side of the hatch, the actuation mechanism is configured such that after disengagement of the camming surfaces^ displaceraent of the pivotable interconnection between the first ends of the first and second links is arrested by an abutment which causes the conmiencement of the reconficjuring of the linkage to open the hatch,
24. The hatch assembly of claim 17 or any claim depending thereon wherein, at each side of the hatch, the actuation mechanism is configured such that displacement of the linear sictuation means in a second closing direction firstly reconfigures the linkage so that the hatch is closed ana secondly displaces the linkage so that the linkage camming surfaces engage the hatch camming surfaces to lock the hatch in its closed position.
25. The hatch assemlDly of claim 24 wherein, at each side of the hatch, the actuation mechanism is configured such that the first and second links become at least substantially aligned with each other when the hatch reaches its closed position whereafter further displacement of the linear actuation means in a second closing direction displaces the linkage so that the linkage cari!m.ing surfaces engage the hatch caimning surfaces to lock the hatch in its closed position.
26, The hatch assembly according to any of claims 13 to 25 wherein the hatch includes a peripheral portion configuxed to sealingly engage around a hatch aperture.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1711111.3A GB2550300B (en) | 2012-09-13 | 2012-09-13 | Hatch assembly with inner and outer frames that can be releasably secured to one another |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1711111.3A GB2550300B (en) | 2012-09-13 | 2012-09-13 | Hatch assembly with inner and outer frames that can be releasably secured to one another |
GB1216350.7A GB2505899B (en) | 2012-09-13 | 2012-09-13 | Hatch assembly having an actuation mechanism using camming surfaces |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201711111D0 GB201711111D0 (en) | 2017-08-23 |
GB2550300A true GB2550300A (en) | 2017-11-15 |
GB2550300B GB2550300B (en) | 2018-03-28 |
Family
ID=47137397
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1711111.3A Active GB2550300B (en) | 2012-09-13 | 2012-09-13 | Hatch assembly with inner and outer frames that can be releasably secured to one another |
GB1216350.7A Active GB2505899B (en) | 2012-09-13 | 2012-09-13 | Hatch assembly having an actuation mechanism using camming surfaces |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1216350.7A Active GB2505899B (en) | 2012-09-13 | 2012-09-13 | Hatch assembly having an actuation mechanism using camming surfaces |
Country Status (1)
Country | Link |
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GB (2) | GB2550300B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU217657U1 (en) * | 2022-05-20 | 2023-04-11 | Армен Георгиевич Багдасарян | Technological hatch frame |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108583784B (en) * | 2018-03-30 | 2019-11-26 | 中船重工(武汉)船舶与海洋工程装备设计有限公司 | A kind of hawser peep hole fast opening and closing sealing cover |
EP3976458B1 (en) * | 2019-05-29 | 2023-07-05 | Fincantieri S.p.A. | Unlocking device of a hatch or shutter or door for closing and sealing openings on marine vessels or ships |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2450191A (en) * | 2007-12-22 | 2008-12-17 | Slam Doors Ltd | Door arrangement |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19741728C2 (en) * | 1997-09-22 | 2001-05-03 | Esco Metallbaubeschlag Handel Gmbh | Opening mechanism |
-
2012
- 2012-09-13 GB GB1711111.3A patent/GB2550300B/en active Active
- 2012-09-13 GB GB1216350.7A patent/GB2505899B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2450191A (en) * | 2007-12-22 | 2008-12-17 | Slam Doors Ltd | Door arrangement |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU217657U1 (en) * | 2022-05-20 | 2023-04-11 | Армен Георгиевич Багдасарян | Technological hatch frame |
Also Published As
Publication number | Publication date |
---|---|
GB2505899B (en) | 2017-09-20 |
GB201216350D0 (en) | 2012-10-24 |
GB201711111D0 (en) | 2017-08-23 |
GB2550300B (en) | 2018-03-28 |
GB2505899A (en) | 2014-03-19 |
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