EP1945899B1 - Pet door - Google Patents
Pet door Download PDFInfo
- Publication number
- EP1945899B1 EP1945899B1 EP06765220A EP06765220A EP1945899B1 EP 1945899 B1 EP1945899 B1 EP 1945899B1 EP 06765220 A EP06765220 A EP 06765220A EP 06765220 A EP06765220 A EP 06765220A EP 1945899 B1 EP1945899 B1 EP 1945899B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control unit
- frame
- pet door
- door according
- pet
- 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.)
- Not-in-force
Links
- 230000007246 mechanism Effects 0.000 claims description 56
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000000295 complement effect Effects 0.000 claims description 6
- 241001465754 Metazoa Species 0.000 description 11
- 239000007943 implant Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000282472 Canis lupus familiaris Species 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B47/0012—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof with rotary electromotors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/02—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means
- E05B47/026—Movement of the bolt by electromagnetic means; Adaptation of locks, latches, or parts thereof, for movement of the bolt by electromagnetic means the bolt moving rectilinearly
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
- E06B7/32—Serving doors; Passing-through doors ; Pet-doors
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B47/0001—Operating or controlling locks or other fastening devices by electric or magnetic means with electric actuators; Constructional features thereof
- E05B2047/0014—Constructional features of actuators or power transmissions therefor
- E05B2047/0018—Details of actuator transmissions
- E05B2047/0024—Cams
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
- E05B2047/0048—Circuits, feeding, monitoring
- E05B2047/0057—Feeding
- E05B2047/0058—Feeding by batteries
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B43/00—Time locks
- E05B43/005—Timer devices controlling electrically operated locks
Definitions
- the present invention relates to a pet door, and in particular to a pet door suitable for use by smaller animals such as cats and/or larger animals such as dogs.
- Pet doors are often fitted in the doors or walls of a building to allow a pet to enter or leave the building without the need for assistance by their owner.
- One widely known type of pet door includes a vertically hanging door flap mounted in a support frame, the door flap being pivotably mounted about its upper edge in an aperture in the frame so that the door flap is free to pivot about a horizontal axis. It is known to provide such a pet door with a manually operable four-way lock. This lock can selectively be set by a user to one of four positions. In a first position the door flap is completely unlocked and is free to pivot in both rotational directions so as to permit both ingress and egress of the pet relative to the building. In a second position the door flap is completely locked against movement in both directions.
- the lock permits movement of the door flap in only one direction, for example to permit egress from, but not ingress into, the building, and in a fourth position the lock prevents movement of the door flap in the other direction, for example to prevent egress from but permit ingress into the building.
- a typical four-way lock comprises a manually operable rotary element disposed on one side of the frame, which side is on the inside face of the pet door when the pet door is installed in the building.
- Radially outwardly extending peripheral parts are provided on the rotary member on both opposite sides of a central section which is aligned with the plane of the door flap when the door flap is closed.
- the rotary member can be rotated selectively around 360°, and at each of four cardinal directions, which are at 90° to each other, one, two or neither of the radially outwardly extending peripheral parts of the rotary member extend above a lower edge of the door flap and thereby selectively permit or prevent movement of the door flap in the respective direction.
- Such a manually operable four-way lock for a pet door is inconvenient to use.
- the lock must be manually operated and so can only be set to a desired lock configuration by the user when the user is present. Also; the user needs to bend down to the pet door so as manually to operate the lock.
- the above-described pet door is a "non-selective" pet door which permits any animal of suitable size to pass through the door when the door flap is unlocked in the respective opening direction as a result of the configuration of the four-way lock. It is also known to provide so-called “selective" pet doors which allow only specific pets through the door. Such selective pet doors include an additional lock mechanism which is only unlocked to allow the animal to pass through the pet door if the animal is carrying an appropriate key. Such selective pet doors can operate using a key worn by the pet which operates a latch in the frame which is unlatched when the correct key is in the vicinity of the frame. The key can operate using a magnetic field, or by emitting radiation such as infrared radiation or ultrasonic radiation.
- an animal access system comprises an access door sensor means and an implant (6) is known, the arrangement being such that in use the implant is inserted through the outer tissue of an animal, the implant (6) being detectable by the sensor means.
- US-A-5 992 096 shows a controllable animal access system connectable to the door of a building which has an opening covered by a pivotally moveable animal door.
- the animal access system has a motion detector associated with a reader which detects an encoded pet tag worn by a selected animal and actuates locking and unlocking mechanisms in response to reading an accepted code.
- Various other controls are provided for operation of the apparatus.
- Such selective pet doors are generally more complicated and expensive than non-selective pet doors and require the pet to carry an appropriate key.
- the present invention aims to provide a pet door which at least partially addresses and solves the disadvantages of the known pet doors described above.
- the present invention accordingly provides a pet door comprising a frame having an aperture, a door flap pivotally mounted in the aperture, at least one locking mechanisms including an electrically operable actuator for selectively locking the door flap, and a control unit which is adapted to operate the at least one locking mechanism, wherein the control unit is removably connected to the frame, wherein
- the frame is provided with a cavity and the control unit is removably housed in the cavity.
- control unit comprises a programmable timer for selectively operating the at least one electrically operable actuator.
- control unit further comprises a display for displaying time and a plurality of manually operable controls for programming the control unit.
- the frame is configured whereby a portion of the frame conceals the manually operable controls when the control unit is connected to the frame.
- control unit is programmable by operation of the manually operable controls when the control unit is remote from the frame, and the control unit adapted to control the first and second electrically operable actuators after the control unit has been connected to the frame.
- control unit and the frame are respectively provided with complementary first and second electrical connectors which electrically connect the control unit to the at least one electrically operable actuator when the control unit is connected to the frame, and are separable to permit the control unit to be removed from the frame.
- the pet door may further comprise detecting means to detect when the control unit is connected to the frame.
- the detecting means comprises a pair of third electrical connectors in the frame electrically connected together form a short-circuit loop therebetween and a pair of fourth electrical connectors in the control unit for connecting to the third electrical connectors whereby the control unit can detect from the short circuit when the control unit is connected to the frame.
- the detecting means is adapted to cause the control unit to control the at least one electrically operable actuator thereby to move a respective locking member into a correct programmed locked or unlocked position for the current time when the control unit is connected to the frame.
- control unit is adapted to detect a current state of the at least one electrically operable actuator.
- control unit is adapted to set a time period during which at least one locking mechanism is selectively locked or unlocked.
- control unit is adapted to provide a manual override whereby the at least one locking mechanism can be set to an unlocked configuration.
- the or each locking mechanism comprises a motor as the respective electrically operable actuator, a motor arm connected to an output shaft of the motor, a cam member connected to the motor arm and a reciprocable bolt connected to the cam.
- the reciprocable bolt is caused to reciprocate between locked and unlocked positions as a result of rotation of the motor shaft in respective opposite rotational directions.
- the frame includes a guideway in which the reciprocable bolt is received for sliding movement along the guideway.
- the at least one locking mechanism comprises a first locking mechanism and a second locking mechanism, the respective first and second locking mechanisms being located respectively to engage laterally opposite sides of the door flap when the door flap is in the closed position within the aperture, selectively to permit or prevent opening of the door flap in a respective opening direction.
- the first and second locking mechanisms each have a respective reciprocable locking end part that, in the locking position, is extended into the aperture to be received within a respective corresponding first or second recess provided at a peripheral edge of the door flap.
- each recess has an open face through which a respective locking end part, when in the locking position, may be slidingly received into the recess when the door flap swings from an open position to a closed position, and a closed face against which the extended locking end part bears when the door flap is in the closed position, the two open faces of the first and second recesses being on respective opposite sides of the door flap.
- a pet door 2 in accordance with an embodiment of the present invention comprises a frame 4 surrounding a central aperture 6 in which a door flap 8 is pivotally mounted.
- the door flap 8 is transparent, being composed of a transparent plastics material such as polymethylmethacrylate or polycarbonate.
- the door flap 8 is fitted to the frame 4 about two hinge parts 10 extending along a horizontal hinge axis about which the door flap 8 can pivot in either rotational direction.
- the frame 4 may be provided with, fittings, for example mountings 12 for screws, to enable the pet door 2 to be securely mounted to a door or a wall of a building.
- a U-shaped flap 14 is coaxially mounted with the door flap 8 about the hinge axis on the front side of the pet door 2.
- the peripheral edge 16 of the door flap 8 bears against an adjacent periphery 18 of the U-shaped flap 14 so that the U-shaped flap 14 is pivotally opened together with the door flap 8.
- the door flap 8 After the door flap 8 has been released, it falls back under gravity about the hinge axis so as to return to a vertical closed orientation.
- the additional weight of the U-shaped flap 14 also returning to a vertical orientation ensures that the door flap 8 safely returns to a vertical orientation and thus a closed position.
- Magnets may be provided to generate an attractive magnetic force between the lower edge 20 of the door flap 8 and the frame 4 to assist the door flap 8 being held in a vertical closed orientation, for example to prevent inadvertent opening as a result of gusts of wind.
- a sealing gasket 22 of generally U-shaped plan is formed around the aperture 6 and in registry beneath the U-shaped flap 14 so as to inhibit drafts of air from entering the building through the aperture 6 when the door flap 8 is closed.
- the door flap 8 in accordance with the present invention is provided with two locking mechanisms 24, 26, each locking mechanism 24, 26 being adapted to lock the door flap 8 against opening from the closed position in a respective rotational direction.
- one locking mechanism 24 prevents egress from the building, and the other locking mechanism 26 prevents ingress into the building, through the pet door 2.
- first and second locking mechanisms 24, 26 are located within the frame 4.
- the frame 4 is formed from a front frame part 28 and a rear frame part 30 that are assembled together and define therebetween a central chamber 32 in which the first and second locking mechanisms 24, 26 are disposed.
- Each locking mechanism 24, 26 comprises a respective electrical actuator 34, 36 in the form of an electric rotary motor.
- the motor 34, 36 is typically an inexpensive rotary motor having a high number of revolutions per minute, typically about 10,000 revolutions per minute under low load conditions, and with low torque.
- Each motor 34, 36 has a motor shaft 38 extending from a housing 40 of the motor 34, 36.
- An L-shaped arm 42 is fitted to the motor shaft 38 at a particular rotational orientation.
- the L-shaped arm 42 includes a radially outwardly extending part 44, with respect to the axis of rotation of the motor shaft 38, which is provided at the free end 46 thereof with a hole 48.
- a cam link 50 is provided with comprises an elongate element 52 with two outwardly extending lugs 54, 56 each at a respective opposed end 58, 60 thereof.
- a first lug 54 is received in the hole 48 of the L-shaped arm 42 and a second lug 56 is received in a hole 62 provided in a lock bolt 64.
- the lock bolt 64 is slidably received for reciprocal movement in a guideway 66 formed in the rear frame part 30 of the frame 4.
- the lock bolt 64 has a locking end part 68 which is located at an end 70 of the guideway 66 which terminates at the aperture 6 of the frame 4.
- each locking mechanism 24, 26 can be selectively moved, by control of the respective electric motor 34, 36, between a locked configuration and an unlocked configuration.
- the respective lock bolt 64 engages the door flap 8 within the aperture 6 and prevents the door flap 8 from moving in a respective rotational direction about the hinge axis.
- Each locking end part 68 in the locked configuration, is received within a respective corresponding recess 72 provided generally along the lower edge 20 of the door flap 8.
- Each recess 72 comprises a semi-oval shaped cut-out 74 molded into the peripheral edge 16 of the door flap 8.
- Each cut-out 74 accordingly has, extending in a respective direction orthogonal to the plane of the door flap 8, an open face 76, through which a respective locking end part 68, when in the locking position, may be slidingly received into the cut-out 74 when the door flap 8 swings from the open position to the closed position, and a rounded closed face 78, comprised in the peripheral edge 16 of the door flap 8, against which the extended locking end part 68 bears when the door flap 8 is in the closed position.
- the closed face 78 therefore acts as a stop when the respective locking end part 68 is extended, the stop preventing further rotational movement of the door flap 8 in one rotational direction.
- the two open faces 76 of the cut-outs 74 are on respective opposite sides 80, 82 of the door flap 8. Accordingly, one cut-out 74 together with the respective associated locking mechanism 24, prevents the door flap 8 from moving in one rotational direction when in the locked position and the other cut-out 74 together with the other associated locking mechanism 26 prevents the door flap 8 from moving in the other rotational direction when in the locked position.
- control unit 92 for operating the locking mechanisms 24, 26 is provided.
- the control unit 92 comprises a housing 94 which is detachably held in a cavity 96 provided at the upper edge 90 of the frame 4.
- the control unit 92 is received within the cavity 96, and in Figure 3 the control unit 92 is shown removed from the cavity 96, in an exploded manner.
- the cavity 96 is provided with a top opening 98 and a side opening 100 which merge together to form a common opening 102 in the frame 4.
- the control unit 92 is inserted into and removed from the frame 4 through the top opening 98.
- the side opening 100 permits a user manually to engage the control unit 92 so as to push it upwardly through the top opening 98.
- the side opening 100 also exposes a display 104 provided in the control unit 92.
- the control unit 92 is also provided with a plurality of manually operable controls 106, typically push buttons, for controlling the operation of the locking mechanisms 24, 26.
- the manually operable controls 106 are operable when the control unit 92 is detached from the frame 4.
- the upper front face 108 of the frame 4 on either side of the side opening 100 conceals the manually operable controls 106. Accordingly, in the assembled configuration, children cannot press the manually operable controls 106 and thereby adjust the settings of the locking mechanisms 24, 26 of the pet door 2. If desired, a child proof clip mechanism is provided in the frame 4 to securely clip the control unit 92 within the frame 4 so that it cannot be removed by a child.
- the control unit 92 includes a programmable timer for selectively controlling the locking and unlocking of the locking mechanisms 24, 26 so as to provide a four way locking system for the pet door 2.
- the control unit 92 also includes the display 104 which is adapted to display time and also other information concerning the setting and operation of the control unit 92.
- the display 104 includes a clock and icons showing the various settings.
- the control unit 92 also includes an electrical power source, in the form of batteries, for driving the electrical rotary motors 34, 36 as well as powering the programmable timer and display 104.
- the electric rotary motor 34, 36 of each respective locking mechanism 24, 26 is independently driven by the control unit 92.
- the control unit 92 is provided with plural first electrical connectors 110, in the embodiment six electrical connectors 110. Two of the first electrical connectors 112 are for connecting to the first electric rotary motor 34 via respective complementary second connectors 114 and wiring 116 in the frame 4 and a further two of the first electrical connectors 118 are for electrical connection to the second electric rotary motor 36 via respective complementary second connectors 120 and wiring 122 in the frame 4. The remaining two first electrical connectors 124 are electrically connected to respective complementary second connectors 126 and wiring 128 in the frame 4 thereby forming a closed electrical loop 130 provided within the frame 4 which short circuits the two first electrical connectors 124 together.
- the electrical connections between the detachable control unit 92 and the circuitry in the frame 4 connecting to the electric rotary motors 34, 36 therefore comprise complementary first and second electrical connectors which are provided respectively on the control unit 92, in the form of a detachable module, and on the frame 4 within the cavity 96.
- first and second electrical connectors are electrically connected together.
- the electrical connectors are configured so as to permit repeated insertion and detachment of the control unit 92 relative to the frame 4 while maintaining good electrical contact. Suitable electrical contacts will be known to those skilled in the art.
- the closed electrical loop 130 is provided for the electrical connection so that the control unit 92 is able to detect whether or not the control unit 92 has been inserted into the frame 4 and thereby electrically connected to the two electric rotary motors 34, 36 It is then possible, as described hereinbelow, for the control unit 92 immediately to drive the respective electric rotary motors 34, 36 to the desired rotational orientation, and thereby lock or unlock the respective locking mechanism 24, 26, as set by the programmable timer within the control unit for the particular time that the control unit is inserted into the frame 4 after programming of the control unit 92.
- the programmable timer within the control unit 92 permits each electric rotary motor 34, 36 to be driven to a respective rotational orientation, corresponding to a locked or unlocked configuration for the respective locking mechanism 24,26, at various selected times during a 24 hour period.
- Plural time events may be programmed.
- the two locks can be independently controlled, so as to provide a four way lock which (1) locks the pet door in both directions; (2) locks the pet door in one direction; (3) locks the pet door in the opposite direction; or (4) does not lock the pet door in either direction.
- the first electric rotary motor 34 which is configured to control the first locking mechanism 24 which prevents egress from the building, may be programmed to open at 07.00 hours and close the locking mechanism at 22.00 hours.
- the second electric rotary motor 36 may be programmed to control the second locking mechanism 26, which controls ingress into the building, so as to be unlocked at 08.00 hours and locked at 21.00 hours. In this way, the pet door can be programmed so as to control pet movements by night and by day.
- the control unit 92 may be provided with a manual override to suspend the programmed event (a change of lock status) occurring and permit the locking mechanisms 24,26 to be set to an open configuration so that the pet door 2 can be opened in both directions indefinitely until the manual mode is cancelled.
- the pet door 2 may be optionally provided with a manually operated four-way lock, as described hereinbefore with respect to the known pet doors, to control pet movements manually if desired.
- the preferred embodiment of the present invention therefore provides an automatic four-way locking pet door.
- Two locks are provided that are independently programmable automatically to lock and unlock the door flap with respect to a respective opening direction at preselected times. This provides a much more versatile and user-friendly pet door than known four-way locking pet doors which are manually operated.
- a control unit in the pet door that is removable from the frame provides the advantage that the operation of the pet door can be preset without requiring the user to crouch down to the height of the pet door. Also, the control unit automatically detects when it has been inserted back into the frame and thereby in electrical communication with the motors and associated circuitry in the frame, so that the motors can immediately be set automatically to their desired configuration for the actual time that the control unit has been reinserted. This provides the advantage that no remote control data or signal transmitter/ receiver system, for example using an infrared signal or an ultrasound signal which are conventionally used for remote control devices, is required.
- the pet door is a four-way locking pet door that includes two locking mechanisms, each independently controlled to lock the door flap against movement in a respective opening direction.
- only one locking mechanism is provided, and this is adapted either to lock the door flap against movement in one opening direction or to act as a bolt that locks the door flap against movement in both opening directions simultaneously.
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Housing For Livestock And Birds (AREA)
- Lock And Its Accessories (AREA)
Description
- The present invention relates to a pet door, and in particular to a pet door suitable for use by smaller animals such as cats and/or larger animals such as dogs.
- Pet doors are often fitted in the doors or walls of a building to allow a pet to enter or leave the building without the need for assistance by their owner.
- One widely known type of pet door includes a vertically hanging door flap mounted in a support frame, the door flap being pivotably mounted about its upper edge in an aperture in the frame so that the door flap is free to pivot about a horizontal axis. It is known to provide such a pet door with a manually operable four-way lock. This lock can selectively be set by a user to one of four positions. In a first position the door flap is completely unlocked and is free to pivot in both rotational directions so as to permit both ingress and egress of the pet relative to the building. In a second position the door flap is completely locked against movement in both directions. In a third position the lock permits movement of the door flap in only one direction, for example to permit egress from, but not ingress into, the building, and in a fourth position the lock prevents movement of the door flap in the other direction, for example to prevent egress from but permit ingress into the building.
- A typical four-way lock comprises a manually operable rotary element disposed on one side of the frame, which side is on the inside face of the pet door when the pet door is installed in the building. Radially outwardly extending peripheral parts are provided on the rotary member on both opposite sides of a central section which is aligned with the plane of the door flap when the door flap is closed. The rotary member can be rotated selectively around 360°, and at each of four cardinal directions, which are at 90° to each other, one, two or neither of the radially outwardly extending peripheral parts of the rotary member extend above a lower edge of the door flap and thereby selectively permit or prevent movement of the door flap in the respective direction.
- Such a manually operable four-way lock for a pet door is inconvenient to use. The lock must be manually operated and so can only be set to a desired lock configuration by the user when the user is present. Also; the user needs to bend down to the pet door so as manually to operate the lock.
- The above-described pet door is a "non-selective" pet door which permits any animal of suitable size to pass through the door when the door flap is unlocked in the respective opening direction as a result of the configuration of the four-way lock. It is also known to provide so-called "selective" pet doors which allow only specific pets through the door. Such selective pet doors include an additional lock mechanism which is only unlocked to allow the animal to pass through the pet door if the animal is carrying an appropriate key. Such selective pet doors can operate using a key worn by the pet which operates a latch in the frame which is unlatched when the correct key is in the vicinity of the frame. The key can operate using a magnetic field, or by emitting radiation such as infrared radiation or ultrasonic radiation.
- It is known from
GB-A-2334067 US-A-6141911 to provide a selective pet door having a pair of electrically operate bolts that can be selectively operated to engage within respective sides of a door flap to lock the pet door. However, no four-way locking is disclosed, and so the pet door can not be configured to permit movement of the door flap in only one direction, for example to permit egress from, but not ingress into, the building. - From
GB-A-2381180 -
US-A-5 992 096 shows a controllable animal access system connectable to the door of a building which has an opening covered by a pivotally moveable animal door. The animal access system has a motion detector associated with a reader which detects an encoded pet tag worn by a selected animal and actuates locking and unlocking mechanisms in response to reading an accepted code. Various other controls are provided for operation of the apparatus. - Such selective pet doors are generally more complicated and expensive than non-selective pet doors and require the pet to carry an appropriate key.
- The present invention aims to provide a pet door which at least partially addresses and solves the disadvantages of the known pet doors described above.
- The present invention accordingly provides a pet door comprising a frame having an aperture, a door flap pivotally mounted in the aperture, at least one locking mechanisms including an electrically operable actuator for selectively locking the door flap, and a control unit which is adapted to operate the at least one locking mechanism, wherein the control unit is removably connected to the frame, wherein
- The frame is provided with a cavity and the control unit is removably housed in the cavity.
- Preferably, the control unit comprises a programmable timer for selectively operating the at least one electrically operable actuator.
- Preferably, the control unit further comprises a display for displaying time and a plurality of manually operable controls for programming the control unit.
- Preferably, the frame is configured whereby a portion of the frame conceals the manually operable controls when the control unit is connected to the frame.
- Preferably, the control unit is programmable by operation of the manually operable controls when the control unit is remote from the frame, and the control unit adapted to control the first and second electrically operable actuators after the control unit has been connected to the frame.
- Preferably, the control unit and the frame are respectively provided with complementary first and second electrical connectors which electrically connect the control unit to the at least one electrically operable actuator when the control unit is connected to the frame, and are separable to permit the control unit to be removed from the frame.
- The pet door may further comprise detecting means to detect when the control unit is connected to the frame.
- Preferably, the detecting means comprises a pair of third electrical connectors in the frame electrically connected together form a short-circuit loop therebetween and a pair of fourth electrical connectors in the control unit for connecting to the third electrical connectors whereby the control unit can detect from the short circuit when the control unit is connected to the frame.
- Preferably, the detecting means is adapted to cause the control unit to control the at least one electrically operable actuator thereby to move a respective locking member into a correct programmed locked or unlocked position for the current time when the control unit is connected to the frame.
- Preferably, the control unit is adapted to detect a current state of the at least one electrically operable actuator.
- Preferably, the control unit is adapted to set a time period during which at least one locking mechanism is selectively locked or unlocked.
- Preferably, the control unit is adapted to provide a manual override whereby the at least one locking mechanism can be set to an unlocked configuration.
- Preferably, the or each locking mechanism comprises a motor as the respective electrically operable actuator, a motor arm connected to an output shaft of the motor, a cam member connected to the motor arm and a reciprocable bolt connected to the cam.
- Preferably, the reciprocable bolt is caused to reciprocate between locked and unlocked positions as a result of rotation of the motor shaft in respective opposite rotational directions.
- Preferably, the frame includes a guideway in which the reciprocable bolt is received for sliding movement along the guideway.
- Preferably, the at least one locking mechanism comprises a first locking mechanism and a second locking mechanism, the respective first and second locking mechanisms being located respectively to engage laterally opposite sides of the door flap when the door flap is in the closed position within the aperture, selectively to permit or prevent opening of the door flap in a respective opening direction.
- Preferably, the first and second locking mechanisms each have a respective reciprocable locking end part that, in the locking position, is extended into the aperture to be received within a respective corresponding first or second recess provided at a peripheral edge of the door flap.
- Preferably, each recess has an open face through which a respective locking end part, when in the locking position, may be slidingly received into the recess when the door flap swings from an open position to a closed position, and a closed face against which the extended locking end part bears when the door flap is in the closed position, the two open faces of the first and second recesses being on respective opposite sides of the door flap.
- Embodiments of the present invention will now be described by way of example, with reference to the accompanying drawings, in which:-
-
Figure 1 is a perspective front view of a pet door in accordance with an embodiment of the present invention; -
Figure 2 is a perspective rear view of the pet door ofFigure 1 ; -
Figure 3 is a perspective front view of the pet door ofFigure 1 with the control unit separated from the frame of the pet door; -
Figure 4 is a perspective view showing the assembly of the electric actuators and associated locking mechanisms in a rear frame member of the pet door ofFigure 1 ; -
Figure 5 is a perspective view of a locking mechanism shown inFigure 4 ; -
Figure 6 is an exploded perspective view of the pet door ofFigure 1 ; and -
Figure 7 is a schematic illustration of the control unit and of the electrical connections between the control unit and the electric actuators of the locking mechanisms. - Referring to
Figures 1 to 6 , apet door 2 in accordance with an embodiment of the present invention comprises aframe 4 surrounding acentral aperture 6 in which adoor flap 8 is pivotally mounted. In the illustrated embodiment, thedoor flap 8 is transparent, being composed of a transparent plastics material such as polymethylmethacrylate or polycarbonate. Thedoor flap 8 is fitted to theframe 4 about twohinge parts 10 extending along a horizontal hinge axis about which thedoor flap 8 can pivot in either rotational direction. As is known in the art, theframe 4 may be provided with, fittings, forexample mountings 12 for screws, to enable thepet door 2 to be securely mounted to a door or a wall of a building. - A U-shaped
flap 14 is coaxially mounted with thedoor flap 8 about the hinge axis on the front side of thepet door 2. When thedoor flap 8 is opened in an inwards direction, theperipheral edge 16 of thedoor flap 8 bears against anadjacent periphery 18 of the U-shapedflap 14 so that the U-shapedflap 14 is pivotally opened together with thedoor flap 8. After thedoor flap 8 has been released, it falls back under gravity about the hinge axis so as to return to a vertical closed orientation. The additional weight of the U-shapedflap 14 also returning to a vertical orientation ensures that thedoor flap 8 safely returns to a vertical orientation and thus a closed position. Magnets (not shown) may be provided to generate an attractive magnetic force between thelower edge 20 of thedoor flap 8 and theframe 4 to assist thedoor flap 8 being held in a vertical closed orientation, for example to prevent inadvertent opening as a result of gusts of wind. A sealinggasket 22 of generally U-shaped plan is formed around theaperture 6 and in registry beneath the U-shapedflap 14 so as to inhibit drafts of air from entering the building through theaperture 6 when thedoor flap 8 is closed. When thedoor flap 8 is opened in the opposite rotational direction, away from theU-shaped flap 14, theU-shaped flap 14 stays static in a vertical orientation. When thedoor flap 8 is released, it again returns under the action of gravity to a vertical closed orientation. - The
door flap 8 in accordance with the present invention is provided with two lockingmechanisms mechanism door flap 8 against opening from the closed position in a respective rotational direction. Thus onelocking mechanism 24 prevents egress from the building, and theother locking mechanism 26 prevents ingress into the building, through thepet door 2. - Accordingly, as shown in detail in
Figures 4 to 6 , first andsecond locking mechanisms frame 4. Theframe 4 is formed from afront frame part 28 and arear frame part 30 that are assembled together and define therebetween acentral chamber 32 in which the first andsecond locking mechanisms locking mechanism electrical actuator motor - Each
motor motor shaft 38 extending from ahousing 40 of themotor arm 42 is fitted to themotor shaft 38 at a particular rotational orientation. The L-shapedarm 42 includes a radially outwardly extendingpart 44, with respect to the axis of rotation of themotor shaft 38, which is provided at thefree end 46 thereof with ahole 48. Acam link 50 is provided with comprises anelongate element 52 with two outwardly extendinglugs opposed end 58, 60 thereof. Afirst lug 54 is received in thehole 48 of the L-shapedarm 42 and asecond lug 56 is received in ahole 62 provided in alock bolt 64. Thelock bolt 64 is slidably received for reciprocal movement in aguideway 66 formed in therear frame part 30 of theframe 4. Thelock bolt 64 has a lockingend part 68 which is located at anend 70 of theguideway 66 which terminates at theaperture 6 of theframe 4. - When the
respective motor motor arm 42, which in turn, by operation of thecam link 50, causes selective reciprocal movement of thelock bolt 64 in either a forwards direction towards thedoor flap 8, to a locked position, or a reverse direction away from thedoor flap 8, to an unlocked position. In this way, each lockingmechanism electric motor - In the locked position, the
respective lock bolt 64 engages thedoor flap 8 within theaperture 6 and prevents thedoor flap 8 from moving in a respective rotational direction about the hinge axis. - Each locking
end part 68, in the locked configuration, is received within a respectivecorresponding recess 72 provided generally along thelower edge 20 of thedoor flap 8. Eachrecess 72 comprises a semi-oval shaped cut-out 74 molded into theperipheral edge 16 of thedoor flap 8. Each cut-out 74 accordingly has, extending in a respective direction orthogonal to the plane of thedoor flap 8, anopen face 76, through which a respectivelocking end part 68, when in the locking position, may be slidingly received into the cut-out 74 when thedoor flap 8 swings from the open position to the closed position, and a roundedclosed face 78, comprised in theperipheral edge 16 of thedoor flap 8, against which the extendedlocking end part 68 bears when thedoor flap 8 is in the closed position. Theclosed face 78 therefore acts as a stop when the respectivelocking end part 68 is extended, the stop preventing further rotational movement of thedoor flap 8 in one rotational direction. - The two
open faces 76 of the cut-outs 74 are on respectiveopposite sides door flap 8. Accordingly, one cut-out 74 together with the respective associatedlocking mechanism 24, prevents thedoor flap 8 from moving in one rotational direction when in the locked position and the other cut-out 74 together with the other associatedlocking mechanism 26 prevents thedoor flap 8 from moving in the other rotational direction when in the locked position. - The provision of these two cut-
outs 74 in theperipheral edge 16 of thedoor flap 8 permits thelock bolts 64 to be disposed and operated in a common central plane which also includes thedoor flap 8 when in the closed position and the hinge axis. This also provides that the portions of thedoor flap 8 defining the respective cut-outs 74 can act as a cover for the respective exposed lockingend parts 68, thereby reducing the possibility of dirt or other debris fouling the lockingmechanisms mechanisms bottom corners 84, 86 of theframe 4 so as to provide acentral portion 88 of thelower edge 20 of thedoor flap 8, and the corresponding adjacent part of theframe 4 defining theaperture 6, which is absent of any portions of the lockingmechanisms mechanisms pet door 2. By providing the two lockingmechanisms lower corners 84, 86 of theframe 4 of thepet door 2, this enables the lockingmechanisms frame 4 without making theframe 4 excessively bulky or large in dimensions. - At an
upper edge 90 of theframe 4, acontrol unit 92 for operating the lockingmechanisms control unit 92 comprises ahousing 94 which is detachably held in acavity 96 provided at theupper edge 90 of theframe 4. InFigure 1 thecontrol unit 92 is received within thecavity 96, and inFigure 3 thecontrol unit 92 is shown removed from thecavity 96, in an exploded manner. - The
cavity 96 is provided with atop opening 98 and aside opening 100 which merge together to form acommon opening 102 in theframe 4. Thecontrol unit 92 is inserted into and removed from theframe 4 through thetop opening 98. Theside opening 100 permits a user manually to engage thecontrol unit 92 so as to push it upwardly through thetop opening 98. Theside opening 100 also exposes adisplay 104 provided in thecontrol unit 92. Thecontrol unit 92 is also provided with a plurality of manuallyoperable controls 106, typically push buttons, for controlling the operation of the lockingmechanisms operable controls 106 are operable when thecontrol unit 92 is detached from theframe 4. In the assembled configuration, the upperfront face 108 of theframe 4 on either side of theside opening 100 conceals the manuallyoperable controls 106. Accordingly, in the assembled configuration, children cannot press the manuallyoperable controls 106 and thereby adjust the settings of the lockingmechanisms pet door 2. If desired, a child proof clip mechanism is provided in theframe 4 to securely clip thecontrol unit 92 within theframe 4 so that it cannot be removed by a child. - Referring to
Figure 7 , thecontrol unit 92 will be described in greater detail. Thecontrol unit 92 includes a programmable timer for selectively controlling the locking and unlocking of the lockingmechanisms pet door 2. Thecontrol unit 92 also includes thedisplay 104 which is adapted to display time and also other information concerning the setting and operation of thecontrol unit 92. Thus thedisplay 104 includes a clock and icons showing the various settings. Thecontrol unit 92 also includes an electrical power source, in the form of batteries, for driving theelectrical rotary motors display 104. - The
electric rotary motor respective locking mechanism control unit 92. Thecontrol unit 92 is provided with plural firstelectrical connectors 110, in the embodiment sixelectrical connectors 110. Two of the firstelectrical connectors 112 are for connecting to the firstelectric rotary motor 34 via respective complementarysecond connectors 114 andwiring 116 in theframe 4 and a further two of the firstelectrical connectors 118 are for electrical connection to the secondelectric rotary motor 36 via respective complementarysecond connectors 120 andwiring 122 in theframe 4. The remaining two first electrical connectors 124 are electrically connected to respective complementarysecond connectors 126 andwiring 128 in theframe 4 thereby forming a closedelectrical loop 130 provided within theframe 4 which short circuits the two first electrical connectors 124 together. - The electrical connections between the
detachable control unit 92 and the circuitry in theframe 4 connecting to theelectric rotary motors control unit 92, in the form of a detachable module, and on theframe 4 within thecavity 96. When thecontrol unit 92 is received within thecavity 96, the first and second electrical connectors are electrically connected together. The electrical connectors are configured so as to permit repeated insertion and detachment of thecontrol unit 92 relative to theframe 4 while maintaining good electrical contact. Suitable electrical contacts will be known to those skilled in the art. - The closed
electrical loop 130 is provided for the electrical connection so that thecontrol unit 92 is able to detect whether or not thecontrol unit 92 has been inserted into theframe 4 and thereby electrically connected to the twoelectric rotary motors control unit 92 immediately to drive the respective electricrotary motors respective locking mechanism frame 4 after programming of thecontrol unit 92. - The programmable timer within the
control unit 92 permits eachelectric rotary motor respective locking mechanism electric rotary motor 34, which is configured to control thefirst locking mechanism 24 which prevents egress from the building, may be programmed to open at 07.00 hours and close the locking mechanism at 22.00 hours. The secondelectric rotary motor 36 may be programmed to control thesecond locking mechanism 26, which controls ingress into the building, so as to be unlocked at 08.00 hours and locked at 21.00 hours. In this way, the pet door can be programmed so as to control pet movements by night and by day. - The
control unit 92 may be provided with a manual override to suspend the programmed event (a change of lock status) occurring and permit the lockingmechanisms pet door 2 can be opened in both directions indefinitely until the manual mode is cancelled. Thepet door 2 may be optionally provided with a manually operated four-way lock, as described hereinbefore with respect to the known pet doors, to control pet movements manually if desired. - The preferred embodiment of the present invention therefore provides an automatic four-way locking pet door. Two locks are provided that are independently programmable automatically to lock and unlock the door flap with respect to a respective opening direction at preselected times. This provides a much more versatile and user-friendly pet door than known four-way locking pet doors which are manually operated.
- The provision of a control unit in the pet door that is removable from the frame provides the advantage that the operation of the pet door can be preset without requiring the user to crouch down to the height of the pet door. Also, the control unit automatically detects when it has been inserted back into the frame and thereby in electrical communication with the motors and associated circuitry in the frame, so that the motors can immediately be set automatically to their desired configuration for the actual time that the control unit has been reinserted. This provides the advantage that no remote control data or signal transmitter/ receiver system, for example using an infrared signal or an ultrasound signal which are conventionally used for remote control devices, is required. The avoidance of such a remote control data or signal transmitter/ receiver system, by the provision of a simple electrical detecting system between the control unit and the pet door, significantly reduces the production cost of the programmable electrically locking pet door. Also, since the programmable electrically locking pet door is unable to function without the control unit having been inserted into the cavity in the frame, because the control unit electrically powers the motors of the one or more locking mechanisms, there is little chance of the control unit being inadvertently lost.
- Furthermore, by providing the batteries as well as the control electronics within the control unit, only the electrical actuators and the associated electrical wiring thereto from the electrical connectors need to be provided in the frame of the pet door. This reduces the complexity of the construction and assembly of the pet door, and reduces manufacturing costs.
- In the illustrated embodiment the pet door is a four-way locking pet door that includes two locking mechanisms, each independently controlled to lock the door flap against movement in a respective opening direction. However, in a further embodiment only one locking mechanism is provided, and this is adapted either to lock the door flap against movement in one opening direction or to act as a bolt that locks the door flap against movement in both opening directions simultaneously.
- Further modifications to the pet door of the present invention will be apparent to those skilled in the art, and are encompassed within the scope of the invention defined in the appended claims.
Claims (18)
- A pet door (2) comprising a frame (4) having an aperture (6), a door flap (8), pivotally mounted in the aperture, at least one locking mechanism including an electrically operable actuator for selectively locking the door flap (8), and a control unit (92) which is adapted to operate the at least one locking mechanism (24, 26), wherein the control unit (92) is removably connected to the frame (4),
characterized in that
the frame (4) is provided with a cavity and the control unit (92) is removably housed in the cavity (96). - The pet door according to claim 1 wherein the control unit (92) comprises a programmable timer for selectively operating the at least one electrically operable actuator.
- The pet door according to claim 2 wherein the control unit (92) further comprises a display (104) for displaying time and a plurality of manually operable controls for programming the control unit.
- The pet door according to claim 3, wherein the frame (4) is configured whereby a portion of the frame (4) conceals the manually operable controls when the control unit (92) is connected to the frame (4).
- The pet door according to claim 3 or claim 4 wherein the control unit (92) is programmable by operation of the manually operable controls when the control unit (92) is remote from the frame (4), and the control unit (92) adapted to control the first and second electrically operable actuators after the control unit (92) has been connected to the frame (4).
- The pet door according to any foregoing claim wherein the control unit (92) and the frame (4) are respectively provided with complementary first and second electrical connectors (124, 126) which electrically connect the control unit (92) to the at least one electrically operable actuator when the control unit (92) is connected to the frame (4), and are separable to permit the control unit (92) to be removed from the frame (4).
- The pet door according to any foregoing claim further comprising detecting means to detect when the control unit (92) is connected to the frame (4).
- The pet door according to claim 7 wherein the detecting means comprises a pair of third electrical connectors in the frame (4) electrically connected together from a short-circuit loop there between and a pair of fourth electrical connectors in the control unit (92) for connecting to the third electrical connectors whereby the control unit (92) can detect from the short circuit when the control unit is connected to the frame (4).
- The pet door according to claim 7 or claim 8 wherein the detecting means is adapted to cause the control unit (92) to control the at least one electrically operable actuator thereby to move a respective locking member into a correct programmed locked or unlocked position for the current time when the control unit (92) is connected to the frame (4).
- The pet door according to claim 9 wherein the control unit (92) is adapted to detect a current state of the at least one electrically operable actuator.
- The pet door according to any foregoing claim wherein the control unit (92) is adapted to set a time period during which at least one locking mechanism (24, 26) is selectively locked or unlocked.
- The pet door according to claim 11 wherein the control unit (92) is adapted to provide a manual override whereby the at least one locking mechanism (24, 26) can be set to an unlocked configuration.
- The pet door according to any foregoing claim wherein the or each locking mechanism (24, 26) comprises a motor (34, 36) as the respective electrically operable actuator, a motor arm (42) connected to an output shaft (38) of the motor (34, 36), a cam member (50) connected to the motor arm (42) and a reciprocable bolt (64) connected to the cam (50).
- The pet door according to claim 13 wherein the reciprocable bolt (64) is caused to reciprocate between locked and unlocked positions as a result of rotation of the motor shaft in respective opposite rotational directions.
- The pet door according to claim 13 or claim 14 wherein the frame (4) includes a guideway in which the reciprocable bolt (64) is received for sliding movement along the guideway.
- The pet door according to any foregoing claim wherein the at least one locking mechanism (24, 26) comprises a first locking mechanism and a second locking mechanism, the respective first and second locking mechanisms being located respectively to engage laterally opposite sides of the door flap (8) when the door flap (8) is in the closed position within the aperture (6), selectively to permit or prevent opening of the door flap (8) in a respective opening direction.
- The pet door according to claim 16 wherein the first and second locking mechanism each have a respective reciprocable locking end part that, in the locking position, is extended into the aperture to be received within a respective corresponding first or second recess provided at a peripheral edge of the door flap (8).
- The pet door according to claim 17 wherein each recess has an open face through which a respective locking end part, when in the locking position, may be slidingly received into the recess when the door flap (8) swings from an open position to a closed position, and a closed face against which the extended locking end part bears when the door flap is in the closed position, the two open faces of the first and second recesses being on respective opposite sides of the door flap (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0520087A GB2430694B (en) | 2005-10-03 | 2005-10-03 | Pet door |
PCT/GB2006/002917 WO2007039708A2 (en) | 2005-10-03 | 2006-08-04 | Pet door |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1945899A2 EP1945899A2 (en) | 2008-07-23 |
EP1945899B1 true EP1945899B1 (en) | 2013-03-13 |
Family
ID=35395176
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06765220A Not-in-force EP1945899B1 (en) | 2005-10-03 | 2006-08-04 | Pet door |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1945899B1 (en) |
GB (1) | GB2430694B (en) |
WO (1) | WO2007039708A2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8826594B2 (en) | 2012-05-15 | 2014-09-09 | Radio Systems Corporation | Pet door with locking flaps |
US9157269B2 (en) | 2012-10-03 | 2015-10-13 | Richard Brown | Automatic pet door controlled by smart phone |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2334067B (en) | 1998-02-09 | 2002-07-17 | Reilor Ltd | Pet door |
US5992096A (en) * | 1998-10-19 | 1999-11-30 | Pooch Pass, Inc. | Controllable pet access system |
GB2361735B (en) * | 2000-04-28 | 2002-02-27 | Pet Mate Ltd | Improved electro-magnetically controlled pet door |
GB2376977B (en) * | 2001-06-25 | 2004-10-20 | Roger Duerden | Selective entry pet door controlled by sub-dermal identification device |
GB2381180B (en) * | 2001-10-24 | 2004-12-22 | David Chamberlain | Animal access system |
GB2417318B (en) * | 2002-09-19 | 2006-07-19 | Reilor Holdings Ltd | Key for automatic pet door |
-
2005
- 2005-10-03 GB GB0520087A patent/GB2430694B/en active Active
-
2006
- 2006-08-04 EP EP06765220A patent/EP1945899B1/en not_active Not-in-force
- 2006-08-04 WO PCT/GB2006/002917 patent/WO2007039708A2/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP1945899A2 (en) | 2008-07-23 |
GB2430694A (en) | 2007-04-04 |
WO2007039708A2 (en) | 2007-04-12 |
GB2430694B (en) | 2010-04-21 |
GB0520087D0 (en) | 2005-11-09 |
WO2007039708A3 (en) | 2007-08-23 |
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