Retaining device

Abstract

This door restrictor comprises: - a slide (48) equipped with teeth (176), and - an actuator (90) capable of automatically moving, in response to a release command, the slide from an active position to a retracted position, this actuator comprising for this purpose: - an electric motor (182), - a partially toothed wheel (186) driven in rotation by the motor, this partially toothed wheel comprising on its periphery: - a toothed portion (190) capable of engaging with the teeth of the slide to move it, along a sliding axis (150), from its active position to its retracted position, and - a portion (192) without teeth which, when it is opposite the teeth of the slide, disengages the wheel (186) and the slide (48) to allow manual movement of the slide without causing the wheel.

Description

[0001] The invention relates to a door restrictor for a dwelling door and a door strip for the same dwelling door.

[0002] A known door restrictor, used particularly with door headers, is described in patent application ES286488U. This door restrictor includes a sliding mechanism housed within a door header. This sliding mechanism can be manually moved, directly by hand, by a user located inside the dwelling, between an active position and a retracted position. In the active position, a distal end of the sliding mechanism cooperates with an arm attached to a fixed post to prevent the door from moving beyond a partially open position. In the retracted position, the sliding mechanism allows the door to move to a fully open position.

[0003] In addition to manually moving the slider, it is also possible to move it, using a key and from outside the housing, from its active to its retracted position. This feature is useful for accessing the inside of the housing when the slider has been manually moved into its active position by someone who is no longer able to move it back from its active to its retracted position.

[0004] The door restrictor, as described in application ES286488U, is not compatible with electronic locks which, instead of using a mechanical key, use a keypad, badge or other component to authenticate a person and then allow them to enter.

[0005] Furthermore, the ES286488U door restrictor is complex and not very compact.

[0006] The prior art is also known from KR20210083882A, US2369136, and CH343257A. KR20210083882A describes a door restrictor that can be moved between its open and retracted positions by a motor. The door restrictor in KR20210083882A is also complex and not very compact.

[0007] The invention aims to provide a door restrictor that remedies at least one of the defects of the door restrictor of application ES286488U or of application KR20210083882A.

[0008] The invention is described in the attached set of claims.

[0009] The invention will be better understood upon reading the following description, given solely by way of non-limiting example and made with reference to the drawings in which: there figure 1 is a schematic illustration of an access control system, the figure 2 is a schematic illustration of different components of a door strip of the system of the figure 1, THE figures 3 and 4 These are perspective views of an arm of a door restrictor used in the system of the figure 1 , in positions, respectively, folded and unfolded, the figure 5 is a schematic illustration, partially in vertical section, of a door restrictor of the system of the figure 1 , there figure 6 is a schematic, perspective illustration of the door restrictor of the figure 5 , there figure 7 is a schematic, perspective illustration of a slide and actuator of the door restrictor of the figure 5 , there figure 8 is a schematic, perspective illustration of the actuator of the figure 7 , THE figures 9 to 13 are schematic illustrations of different possible positions of the slider of the figure 7 compared to a wheel of the actuator of the figure 7 .

[0010] In these figures, the same references are used to designate the same elements. In the remainder of this description, the characteristics and functions well known to a person skilled in the art are not described in detail.

[0011] In this description, a detailed example of an embodiment is first described in Chapter I with reference to the figures. Then, in a chapter II, Variations of this embodiment are introduced. Finally, the advantages of the different embodiments are specified in a chapter III. Chapter I: Example of a method of implementation

[0012] There figure 1 represents a system 2 for access control to a dwelling. System 2 ensures that an unauthorized person cannot enter the dwelling, or only with great difficulty.

[0013] For example, a person outside the dwelling who wishes to enter is called a "visitor." A person inside the dwelling is called a "resident." A resident is also a person authorized to enter the dwelling. For example, the resident is the owner of the dwelling.

[0014] To this end, system 2 comprises: an entrance door 4, a portable terminal 6 intended for use by the resident, and an electronic lock 8 mounted on door 4.

[0015] Subsequently, lock 8 is described in the specific case of a door strike plate. Therefore, the numerical reference 8 is also used to designate the door strike plate.

[0016] Door 4 is located at the entrance to the dwelling. This door 4 separates the interior of the dwelling from the exterior. Hereafter, the terms "interior" and "exterior" are used to refer to what is located, respectively, inside and outside the dwelling. For example, door 4 is a front door of an apartment, a house, or any other dwelling. Door 4 has an interior face facing the interior of the dwelling and, on the opposite side, an exterior face. The interior and exterior faces extend primarily in parallel vertical planes. Door 4 can be moved between a closed position, a partially open position, and an open position as shown in the diagram. figure 1In the closed position, door 4 completely obstructs an opening 10 allowing entry into the dwelling. Therefore, in the closed position, the visitor cannot enter the dwelling. Nor can they be seen by the resident because door 4 is opaque. In the ajar position, door 4 partially obstructs the opening 10, leaving a small gap through which the visitor is visible from inside the dwelling to the resident. This gap is narrow enough to prevent the visitor from entering the dwelling. In the open position, the visitor can enter the dwelling and thus move from outside to inside.

[0017] Terminal 6 is a mobile terminal that the resident carries with them. Ilis therefore generally located inside the dwelling when the resident is inside and outside the dwelling when the resident is outside. Terminal 6 can be several kilometers away from the dwelling. Typically, Terminal 6 is a smartphone. To simplify the figure 1 Only one Terminal 6 is shown. However, in practice, there are often several copies of Terminal 6 that function in the same way.

[0018] Terminal 6 is capable of receiving messages sent to it by strip 8, via a telecommunications network 28. Terminal 6 is also capable of sending commands to strip 8 via network 28. For this purpose, terminal 6 includes a human-machine interface.

[0019] The 8-point door strip is a multi-point locking strip. The 8-point strip is mounted, without any degree of freedom, on the inner face of the door 4.

[0020] The headband 8 is a single piece containing the various components described in reference to the figure 2 For this purpose, the strip 8 is in the form of a rigid housing 30 inside which its various components are fixed. The housing 30 is fixed here along the vertical edge of the door 4 located on the side opposite the hinges. The housing 30 is fixed to the inside face of the door 4, for example, using screws. Thus, advantageously, the strip 8 can be installed on the inside face of a pre-existing door.

[0021] On the figure 1 Only those components of the strip 8 that protrude from the housing 30 on the inner side or pass through the vertical edge of this housing 30 are visible. Thus, only the following components of the strip 8 are visible on the figure 1 : a latch 36, a handle 38, deadbolts 42, a touch screen 44, a lock cylinder 46, and a slide 48 of a motorized door restrictor 50.

[0022] The bolt 36 can be moved by the handle 38 from an extended position (shown on the figure 1 ) until it reaches a retracted position. The bolt 36 is continuously pushed back towards an extended position by a return spring. The distal end of the bolt 36 is beveled so that when the door 4 is slammed from its open to its closed position, through the interaction of the beveled end and a stile 40, the bolt 36 is driven into the housing 30 against the force of the return spring, allowing the door 4 to reach its closed position. The stile 40 is fixed, without any degree of freedom, to the door frame 4.

[0023] Each of the deadbolts 42 can be moved between an extended and a retracted position. In the extended position, each bolt 42 engages in a corresponding recess in the jamb 40 to lock the door 4 in its closed position. In its retracted position, each bolt 42 is retracted inside the housing 30 and outside the recess in the jamb 40. Thus, when all the bolts 42 are in their retracted position, the door 4 is unlocked and can be freely moved from its closed to its open position after the handle 38 is pressed. Here, the strike plate 8 has at least five bolts 42.

[0024] On the figure 1Four deadbolts 42 are shown in their extended position to make them more visible even when the door 4 is open. For example, each bolt 42 is a cylindrical bar that can be moved in translation between its extended and retracted positions. Unlike bolt 36, the distal ends of bolts 42 are not beveled.

[0025] Touch screen 44 and cylinder 46 are accessible by the resident located inside the accommodation.

[0026] The door restrictor 50 also includes a long arm 52 mounted on the jamb 40. The slider 48 can be moved manually, directly by hand, by the resident inside the dwelling, between an active and a retracted position. In the active position, the slider 48, by its shape-to-shape interaction with the arm 52, prevents the door 4 from moving beyond its partially open position. Conversely, in its retracted position, the slider 48 allows the door 4 to move to its fully open position.

[0027] There figure 1also represents an orthogonal coordinate system XYZ. The Z direction of this system is vertical. The X and Y directions are horizontal. The X direction is parallel to the vertical plane in which the door 4 extends primarily when it is in its closed position. The X direction is directed from the edge of the door along which the strip 8 is fixed, towards the hinges of this door. The Y direction is directed from the inside of the housing to the outside of the housing. This same XYZ coordinate system is also used to orient the figures 3 to 13 .

[0028] There figure 2 schematically represents the internal architecture of strip 8 as well as various elements of system 2 connected to this strip 8.

[0029] The band 8 includes, mainly housed inside the case 30, a bolt mechanism 54 and a mechanism 56 for actuation of the mechanism 54.

[0030] The mechanism 54 includes the bolts 42 as well as the linkage necessary to move them between their extended and retracted positions.

[0031] The actuation system 56 moves the mechanism 54 from a protruding state to a retracted state and vice versa. In the protruding state, at least one bolt 42 is in its extended position. Here, in the protruding state, all the bolts 42 are in their extended position. In the retracted state, all the bolts 42 are in their retracted position. In this embodiment, the system 56 does not allow the bolt 36 to be moved. The bolt 36 can only be moved using the handle 38.

[0032] To move the mechanism 54 between its protruding and retracted states, the system 56 includes an electric motor 60 and the cylinder 46.

[0033] Cylinder 46 allows the mechanism 54 to be moved from its extended to its retracted state even if the electric motor 60 is unavailable. The motor 60 is considered "unavailable" when it cannot be used to move the mechanism 54 from its extended to its retracted state. Such unavailability may result from a failure of the motor 60 or another component of the actuation system 56. This unavailability may also result, for example, from a power outage affecting the motor 60.

[0034] In this embodiment, cylinder 46 is a mechanical cylinder without any electronic components requiring power to operate. Here, cylinder 46 is a European-style mechanical cylinder. In this embodiment, it comprises an inner half-cylinder and an outer half-cylinder accessible, respectively, from the inner and outer sides of door 4. Thus, cylinder 46 can be operated from both the outer and inner sides of door 4. To this end, the faceplate 8 has a through-hole extending through the housing 30 in the Y direction, into which the inner half-cylinder of cylinder 46 is inserted. This through-hole is located opposite a through-hole extending through the door 4 in the Y direction, into which the outer half-cylinder of cylinder 46 is inserted.

[0035] The cylinder 46 has a rotor 62 mounted for rotation inside a fixed stator 64. The stator 64 is fixed, without any degree of freedom, to the door 4. The cylinder 46 also has a cam 68 driven for rotation by the rotor 62. The rotor 62 can only be driven for rotation when an authorized key is inserted into its keyway 62 and then turned. It is the rotation of this cam 68 that actuates the movement of the mechanism 54 to its retracted state.

[0036] The motor 60 has a drive shaft 70. When the motor 60 is commanded to move the mechanism 54 to its retracted state, it is the rotation of the shaft 70 that drives the movement of the mechanism 54.

[0037] The system 56 includes an output shaft 72 and a mechanism 74 for mechanically coupling the cam 68 and the shaft 70 to this shaft 72 to drive it in rotation. The shaft 72 moves the mechanism 54 from its protruding state to its retracted state when it is rotated in one direction and from its retracted state to its protruding state when it is rotated in the opposite direction.

[0038] The coupling mechanism 74 is, for example, identical to one of those described in the French patent application filed under number FR2203725 on 21 / 04 / 2022 by the company COGELEC.

[0039] To control the motor 60, the control panel 8 includes an electronic central unit 80. The central unit 80 includes: a memory 82, a programmable microprocessor 84, a transmitter / receiver 86, and an information transmission bus 88 which connects the various components of the central unit 80.

[0040] The central unit 80 is connected to the touch screen 44.

[0041] The transmitter / receiver 86 is capable of establishing a wireless communication link with terminal 6 via network 28.

[0042] Memory 82 is a non-volatile memory containing the instructions to be executed by the microprocessor 84. Memory 82 contains all the instructions and data necessary to execute the various functions described in this text.

[0043] The housing 30 of the strip 8 also includes the motorized portion of the door restrictor 50. This motorized portion includes, in addition to the slide 48, an electric actuator 90, an angular position sensor 94, and a control module 96 for the door restrictor 50. In this embodiment, the module 96 is specifically designed to receive an unlocking command transmitted from terminal 6 and, in response, to control the actuator 90 to automatically move the slide 48 into its retracted position. In this embodiment, the control module 96 is a software module implemented in the central unit 80. For this purpose, memory 82 contains the instructions for the control module 96.

[0044] Here, system 2 includes an access control unit 110. This unit 110 is capable of determining whether an authorized person is present at door 4 and, if so, of unlocking door 4. To this end, unit 110 includes: a reader 112 of access rights, an access control module 116, and a database 118 containing access rights authorized to unlock door 4.

[0045] Reader 112 is used to acquire access rights from a person located on the outside of door 4 and transmit them to the access control module 116. Here, reader 112 is capable of reading access rights stored on a portable, hand-carrying mechanical medium. In this embodiment, this medium is a badge 120 with an electronic memory 122 in which access rights are stored. For example, badge 120 is a transponder badge that transmits the access rights stored in its memory 122 only when presented near reader 112. For example, reader 112 is located on the outside of door 4.

[0046] Module 116 determines whether a person present at door 4 is authorized to enter. Specifically, module 116 determines that an authorized person is present at door 4 if the access rights read from badge 120 match pre-registered authorized access rights in database 118.

[0047] If the access rights read from badge 120 correspond to authorized access rights pre-registered in database 118, module 116 commands motor 60 to move mechanism 54 into its retracted state. Otherwise, mechanism 54 remains in the protruding state.

[0048] In this embodiment, module 116 is also implemented as a software module executed by microprocessor 84. Its instructions are stored in memory 82.

[0049] The central unit 80 is also connected to a video intercom device 140 to establish video communication with a person located on the outside of door 4. Device 140 includes a camera, a speaker, and a microphone. This device 140 is, for example, mounted on the outside of door 4. Unit 80 is configured here, for example, to establish video communication between device 40 and terminal 6. During this video communication, the resident using terminal 6 can trigger the transmission of an unlock command to unit 80. In response to receiving this unlock command, unit 80 commands motor 60 to move mechanism 54 into its retracted position.

[0050] THE figures 3 and 4represent arm 52 in more detail. Arm 52 is mounted for rotation on upright 40. More precisely, arm 52 is rotatable around an axis 140 between a folded position, shown on the figure 3 , and an unfolded position, represented on the figure 4 The axis 140 is fixed to the upright 40 and parallel to the X direction. In the folded position, the arm 52 extends mainly vertically from the axis 140 to a free end 142. In the unfolded position, the arm 52 extends mainly parallel to the Y direction.

[0051] The arm 52 has an orifice 144 and a slot 146. The orifice 144 is sized to be traversed by a distal end of the slide 48. The orifice 144 is closer to the axis 140 than to the free end 142.

[0052] The slot 146 extends from the orifice 144 to near the free end 142. Here, the slot 146 is narrower than the orifice 144 in the Z direction. Thanks to this, the slot 146 can trap the distal end of the slide 48.

[0053] THE Figures 5 , 6 and 7 represent in more detail the motorized portion of the door restrictor 50 housed in the casing 30 of the strip 8. In the figure 5 the slider 48 is in its active position and in the figures 6 and 7 It is in its retracted position. On the figure 7 To improve the readability of this figure, the housing 30 of the band 8 is not shown.

[0054] The slide 48 moves translationally along an axis 150 parallel to the X direction. For this purpose, the door restrictor 50 has two rings 152 and 154 inside which the slide 48 is mounted to slide. The rings 152 and 154 are fixed, without any degrees of freedom, to the housing 30 and are each centered on the axis 150. Here, ring 152 is closer to the proximal end of the slide than to its distal end. Conversely, ring 154 is closer to the distal end than to the proximal end. The rings 152 and 154 are made of a material that minimizes friction with the slide 48. For example, rings 152 and 154 are made of plastic.

[0055] Here, the slide 48 is a solid of revolution whose axis of revolution coincides with the axis 150. In this embodiment, the slide 48 can rotate about itself around the axis 150. To this end, the cross-sections of the holes in the rings 152 and 154, into which the slide 48 is received, are circular. To obtain precise guidance, the slide 48 comprises two cylindrical portions 156 and 158 received, respectively, in the hole of the ring 152 and the hole of the ring 154. The cross-section of each of these cylindrical portions 156 and 158 is circular. The diameter of each of these cylindrical portions 156 and 158 is slightly smaller than the diameters of the holes in the rings 152 and 154, respectively, to allow only a small clearance that permits the slide 48 to slide along the axis 150.The length of each of these portions 156, 158 is equal to or greater than a distance D, where the distance D is equal to the distance traveled by the slide 48 when it moves from its retracted position to its active position. Thus, the bushings 152, 154 guide the movement of the slide 48 over its entire length.

[0056] At the proximal end, the slide 48 has a shoulder 160 which acts as a stop, limiting the travel of the slide 48 as it moves towards its active position. Here, the shoulder 160 abuts against the ring 152 when the slide 48 reaches its active position.

[0057] In this embodiment, the proximal end also includes a handle 162 which is located after the shoulder 160 when moving in the X direction. This handle protrudes outside the housing 30. This handle allows the resident to manually move the slider 48 between its active and retracted positions.

[0058] The distal end of the slide 48 is received inside the orifice 144 when the slide 48 is in its active position and the gate 4 is in its closed position. Conversely, in the retracted position, the distal end is located outside the orifice 144. For example, in the retracted position, the distal end is received, at least for the most part, inside the housing 30.

[0059] The distal end of the slide 48 has a bulge 164 ( Fig. 7 ) followed, in the X direction, by a cylindrical portion 166 ( Fig. 7The bulge 164 is dimensioned to pass completely through the opening 144 so that it is located behind the arm 52 when the slide 48 is in its active position. The height of the bulge 164 in the Z direction is greater than the height of the slot 146. The height of the slot 146 corresponds to the width of this slot in the Z direction when the arm 52 is in its extended position and extends primarily parallel to the Y direction. Here, the cross-section of the bulge 164 is circular.

[0060] The cylindrical portion 166 has a circular cross-section. Unlike the bulge 164, the diameter of the cylindrical portion 166 is less than the height of the slot 146. For example, the diameter of the cylindrical portion 166 is less than the diameter of the cylindrical portion 158. Thus, in the active position, the cylindrical portion 166 slides inside the slot 146 when the door 4 is moved to its open position. At the end of its travel, the cylindrical portion 166 abuts against the end 142 of the arm 52, preventing the door 4 from moving beyond its partially open position. Furthermore, once the cylindrical portion 166 is engaged inside the slot 146, the bulge 164 is located behind the arm 52 and keeps the distal end engaged with the arm 52. The distal end is then trapped inside the slot 146.The distal end can only be disengaged from the arm 52 by first returning the gate 4 to its closed position. In the closed position, the bulge 164 is again opposite the opening 144, which makes it possible to move the slide 48 to its retracted position.

[0061] At the distal end of the cylindrical portion 158, the slide 48 has a notch 170. Here, the notch 170 forms a groove centered on the axis 150 and making a complete circumference around this axis 150. The notch 170 has an inclined face 172 that forms one of its sides. This inclined face 172 rises from the bottom of the notch 170 to the cylindrical portion 158 in the X direction. For example, the inclination of this inclined face 172 with respect to a plane perpendicular to the axis 150 is greater than 45° or 60° and less than 80°.

[0062] The slide 48 also has teeth 176. Here, these teeth 176 are located between the cylindrical portions 156 and 158. In this embodiment, each tooth of these teeth 176 forms a rib centered on the axis 150 and which makes a complete turn around the axis 150. Thus, the teeth 176 are invariant under rotation of the slide 48 on itself around the axis 150.

[0063] The slide 48 is made of a material resistant to shearing. Typically, it is made of metal such as stainless steel. The arm 52 is generally made of the same material.

[0064] The door restrictor 50 includes an elastic band 178 ( Fig. 7The arch 178 has two fixed ends attached, without any degree of freedom, to a frame 180 of the housing 30. Between its fixed ends, the arch 178 encircles the slide 48. The location where the arch 178 is attached is chosen so that, when the slide 48 is in its retracted position, the arch 178 is received inside the notch 170. Thus, in the retracted position, the arch 178 is located at the foot of the inclined face 172. The arch 178 is capable of elastic deformation when the slide 48 begins its movement toward its active position, first moving up along the inclined face 172 until it reaches the cylindrical portion 158. Then, as the movement of the slide 48 from its retracted position to its active position continues, the arch 178 slides along the cylindrical portion. 158. For example, the hoop 178 is a helical spring.

[0065] The combination of the hoop 178 and the inclined plate 172 forms a mechanism for retaining the slide 48 in its retracted position. More precisely, the force that the resident must exert to push the slide 48 towards its active position is initially greater because the hoop 178 must be deformed to reach the cylindrical portion 158. Subsequently, the force required to continue moving the slide 48 towards the active position is less because only the friction of the hoop 178 on the cylindrical portion 158 remains.

[0066] The actuator 90 is fixed, without any degree of freedom, to the chassis 180 ( Fig. 6 ) of the housing 30. The actuator 90 comprises an electric motor 182, a shaft 184 driven in rotation by the motor 182 and a wheel 186 ( Fig. 7 ) partially toothed. The motor 182 is connected to the central unit 80 to be controlled by the control module 96.

[0067] The wheel 186 is driven in rotation by the shaft 184. This wheel 186 is located opposite the teeth 176. The wheel 186 has, on its periphery, successively, a toothed portion 190 and a toothless portion 192. These portions 190 and 192 are mainly visible on the figure 5 However, on this figure 5 The other components of the actuator 90 have not been shown. The toothed portion 192 is designed to mesh with the teeth 176 to move the slide 48 along the axis 150 from its active position to its retracted position. The portion 192 has no teeth to disengage the wheel 186 and the slide 48 when this portion 192 is aligned with the teeth 176. When the slide 48 is disengaged from the wheel 186, this allows manual movement of the slide 48 without rotating the wheel 186, and therefore without this movement being hindered by the actuator 90.

[0068] Sensor 94 is visible on the figure 6 and now described with reference to the figure 8 .

[0069] The shaft 184 rotates about its own axis 196, which lies in a plane perpendicular to the axis 150. Here, the shaft 184 is a cylinder with a circular cross-section, in which a recess has been formed to indicate its angular position. For example, in this case, the recess is a flat 198. The flat 198 reduces the diameter of the shaft 184 only within a limited angular portion.

[0070] The sensor 94 comprises a blade 200 and a transducer 202. The blade 200 is constantly pressed against the periphery of the portion of the shaft 184 in which the flat 198 is formed. More precisely, the blade 200 is arranged relative to the shaft 184 so that its travel reaches a maximum when it rubs only against the flat 198 and a minimum when it rubs against the rest of the periphery of the shaft 184. Here, the flat 198 is positioned on the periphery of the shaft 184 so that the travel of the blade 200 reaches its maximum when the toothless portion 192 is opposite the teeth 176.

[0071] The transducer 202 converts the movement of the slat 200 into an electrical signal which is transmitted to the central unit 80 for processing by the control module 96. This electrical signal determines whether the toothless portion 192 is aligned with the toothed portion 176.

[0072] The operation of the door restrictor 50 will now be described with reference to figures 9 to 13 To simplify these figures, only the slide 48, the rings 152, 154 and the wheel 186 are represented.

[0073] Initially, on the figure 9 The slide 48 is in its retracted position. It is held in this retracted position by the retaining mechanism formed by the inclined plate 172 and the arch 178. The wheel 186 is in its angular rest position, that is to say, its angular position where the toothless portion 192 is opposite the teeth 176. In this state, the actuator 90 is mechanically disengaged from the slide 48 because the wheel 186 is not touching the slide 48.

[0074] We now assume that door 4 is in its closed position. The resident manually pushes handle 162 towards arm 52 until slider 48 reaches its active position shown on the Figure 10During this manual movement of the slider 48, the wheel 186 is in its rest position so that the actuator 90 does not hinder this movement in any way.

[0075] Conversely, as long as the wheel 186 is in its rest position, the resident can also manually move the slide 48 from its active position to its retracted position. As previously described, in this case as well, the actuator 90 does not impede the movement of the slide 48.

[0076] We now assume that the slider 48 is in its active position and that the resident is located outside the dwelling and wishes to move the slider 48 to its retracted position in order to enter the dwelling. To do this, the resident uses their terminal 6 to trigger the release command to be sent to the central unit 80. The module 96 receives this release command and, in response, commands the motor 182 to rotate the shaft 184 and the wheel 186 in the direction that moves the slider 48 to its retracted position. As illustrated in the figure 11 In response, wheel 186 begins to rotate, bringing toothed portion 190 into contact with teeth 176. The rotation of the wheel then continues, as illustrated in the figure 12The toothed portion 190 meshes with the teeth 176, which moves the slide 48 from its active position to its retracted position. Finally, the rotation of the wheel 186 continues in the same direction, which brings the toothless portion 192 back opposite the teeth 176, as illustrated in the figure. figure 13 At this stage, sensor 94 detects that portion 192 is again aligned with tooth 176 and, in response, module 96 commands motor 182 to stop. The restrictor 50 has then returned to its initial position shown in the diagram. figure 9 .

[0077] In this embodiment, the actuator 90 is not capable of moving the slide 48 from its retracted position to its active position. Here, the actuator 90 only allows movement of the slide from its active position to its retracted position. Movement in the opposite direction can only be performed manually. Chapter II : Variants: Variations of the door restrictor :

[0078] The handle of the sliding door can take other forms. For example, the handle can also be a knob that extends primarily perpendicularly to the sliding axis. Typically, in this case, the knob slides in a slot running through the front face of the door frame.

[0079] The teeth of portion 190 of the wheel and the slide are not necessarily straight teeth. These teeth can also be oblique.

[0080] Alternatively, the slide cannot rotate about its own axis 150. For example, to achieve this, the cross-sections of the rings 152, 154, and the slide 48 are rectangular or oblong. In this case, the teeth 176 of the slide need only be present on the face of the slide facing the wheel 186. The other faces of the slide are toothless. Thus, in this particular embodiment, the teeth of the slide do not extend over its entire periphery. Similarly, when the slide cannot rotate about its own axis, it is not necessary for the inclined face 172 to make a complete rotation around the axis 150. Therefore, alternatively, the inclined face is provided on only a portion of the slide's periphery.

[0081] Other mechanisms for retaining the slider 48 in its retracted position are possible. For example, in a simplified embodiment, the inclined plate 172 is omitted. In this case, the slider is held in its retracted position by friction between the elastic arch 178 and the cylindrical portion 158. Thus, in this simplified embodiment, the force that retains the slider in its retracted position is the same as the force that retains it in its active position. Under these conditions, at the beginning of the movement of the slider 48 toward its active position, the resident does not have to push the handle 162 with a force greater than that subsequently required to continue the movement of the slider to its active position.

[0082] The elastic hoop 178 is not necessarily a helical spring. For example, as an alternative, hoop 178 is replaced by a hoop made of elastomer.

[0083] Alternatively, the elastic arm 178 is replaced by a pin and a spring that constantly forces this pin towards the axis 150. In this case, when the notch 170 is opposite the pin, the spring pushes the pin into the notch 170, which holds the slide 48 in its retracted position. Conversely, if the handle 162 is pushed towards the arm 52, the pin is pushed back by the inclined face 172 into a depressed position and then rubs against the cylindrical portion 158.

[0084] In another embodiment, the retaining mechanism includes an additional inclined panel symmetrical to the inclined panel 172 with respect to a vertical plane passing through the foot of the inclined panel 172.

[0085] In a very simplified variant, the retaining mechanism of the slide 48 in its retracted position is simply omitted.

[0086] The recess, which is rotated by the shaft 184 of the motor 182, can take forms other than a flat. For example, alternatively, the recess is curved towards the axis 196 of rotation of the shaft 184. The recess can also be replaced by a boss rotated by the shaft 184. This boss is then arranged to modify the position of the blade 200 according to the angular position of the shaft.

[0087] Other embodiments of the sensor 94 are possible. For example, alternatively, the sensor is a proximity sensor capable of detecting, without contact, the presence of the toothless portion 192 opposite the teeth 176 of the slide. Such a non-contact proximity sensor can be an optical or a magnetic sensor.

[0088] The release command to actuator 90 can be triggered in various ways. For example, alternatively, the door handle includes a user-operated button located inside the dwelling. Pressing this button transmits the release command to actuator 90. In this embodiment, the release command does not need to be transmitted to the door restrictor 50 from outside the dwelling or via terminal 6. In another embodiment, this button is integrated into a remote control separate from the door handle and portable by the resident. In this latter case, the door handle includes a wireless receiver capable of receiving the release command transmitted by the remote control when the button is pressed.The unlock command can also be, for example systematically, transmitted to the actuator 90 when the unit 110 has established that an authorized person is present in front of the door 4. Thus, in response to the presentation, in front of the reader 112, of a badge 120 bearing access rights corresponding to authorized access rights pre-recorded in the database 118, the module 116 transmits the unlock command to the actuator 90.

[0089] The door restrictor 50 can also be housed in another box independent of the box 30 of the strip 8. In this case, the door restrictor 50 can be installed on a door without that door also being equipped with a door strip. Control system variants access:

[0090] In a simplified version, drive 112 is omitted and motor 60 is also omitted. In this case, door 4 can only be unlocked using cylinder 46 and an authorized key.

[0091] The mechanical cylinder 46 can also be replaced by an electronic cylinder such as the one disclosed in application EP3431684 from the company COGELEC.

[0092] Conversely, in another simplified embodiment, cylinder 46 is omitted. In this case, door 4 can only be unlocked using drive 112 and motor 60.

[0093] The 112 access rights reader is not necessarily fixed to the door. Il can also be fixed next to the door, for example, on an exterior wall located near door 4.

[0094] Other implementations of the 120 badge are possible. For example, the 120 badge can be implemented in a smartphone. In this case, the smartphone's memory serves as the physical medium containing the access rights. When the key is a smartphone, the reader typically acquires the access rights stored in the smartphone's memory via a wireless connection established according to a short-range wireless communication standard, such as Bluetooth®. In this case, the access rights reader is a Bluetooth®-compliant reader. The 120 badge can also be implemented as a card in whose memory the access rights are stored.

[0095] In other embodiments, instead of using access rights stored on a mechanical medium, biometric characteristics of users are used to authorize access. In this case, the access control system includes a reader of a biometric characteristic that uniquely identifies a human being. For example, this could be a fingerprint reader or a facial recognition system. Others variants:

[0096] The number of bolts 42 can be less than five or more than five. In a simplified variant, the mechanism 54 has only one bolt 42.

[0097] The door strike plate does not necessarily include the latch bolt 36 and the handle 38. For example, in this case, the bolt 36 and the handle 38 are fixed directly to the door and not housed in the lock. In a simplified version, the bolt 36 and / or the handle 38 are omitted.

[0098] The door handle can include additional components. For example, the door handle can also be configured to trigger an alarm signaling an attempted break-in if an unauthorized person breaks into the dwelling.

[0099] The lock can take forms other than a door strip. For example, in another embodiment, the lock is not a multipoint lock, so on the inside, it does not form a strip extending the full height of the door. In this case, typically, the door restrictor 50 and the lock are not housed in the same casing.

[0100] In a simplified version, the 140 videophone device is omitted.

[0101] Terminal 6 can also be omitted. In this case, the unlock command is generated by another means, such as, for example, using a button that can be operated by the resident and / or by a sensor that detects the rotation of shaft 72 and, in response, systematically triggers the generation of the unlock command.

[0102] Several of the variants described above can be combined in the same embodiment. Chapter III: Advantages of the implementation methods described:

[0103] Using arm 52 and slider 48 to prevent door 4 from moving beyond its partially open position results in a much more robust door restrictor than those using a chain. Indeed, it is much easier to cut a chain with pliers than to cut the slider 48, which is shaped like a bar.

[0104] Maintaining the ability to manually move the slide 48 between its active and retracted positions ensures that even if the actuator 90 is unavailable, the door restrictor remains usable, at least from inside the dwelling. The unavailability of the actuator 90 may result from a failure of the motor 182 or a power outage.

[0105] The use of the teeth 176 on the slide and the partially toothed wheel 186 allows for a particularly simple and compact motorization of the slide 48's movement from its active to its retracted position without hindering the manual movement of this slide between its active and retracted positions. In particular, it is not necessary to use levers such as levers 11 and 16 of EP286488U and a stop such as stop 19 of EP286488U.

[0106] The use of the elastic arch 178 and the inclined panel 172 on the slide allows for a simple and compact mechanism to retain the slide in its retracted position.

[0107] The use of sensor 94 to detect the presence of the portion 192 without teeth opposite the teeth 176 of the slide allows the rotation of the shaft 184 of the motor 182 to be stopped as soon as the slide has reached its retracted position.

[0108] The use of the mechanical displacement of the slat 200 to detect if the portion 192 without teeth is opposite the teeth 176 of the slide allows to detect in a simple and very robust way this angular position of the portion 192 of the wheel 186.

[0109] Incorporating the control module 96 into the central unit 80 of the door strip simplifies the construction of the strip 8 because the same central unit is then used to control the actuation system 56 and the door restrictor 50.

Claims

1. Door guard for a dwelling door, said door being rotatable relative to a fixed frame between: - a closed position in which the door completely obstructs an opening allowing entry into the dwelling, - an open position in which the door allows a visitor to enter the dwelling, and - a partially open position in which the door partially obstructs the opening to leave a gap through which the visitor is visible from inside the dwelling while being sufficiently narrow to prevent the visitor from entering the dwelling, this door guard comprising: - a slender arm (52) capable of being mounted for rotation on the fixed upright, and - a slider (48) capable of being mounted on the door, this slider being manually movable in translation along a sliding axis (150), directly by hand by a user located inside the dwelling, between: - an active position in which, by cooperating with the arm, it is capable of preventing the door from moving beyond its ajar position, and - a retracted position in which it allows the door to move to its open position, - an actuator (90) capable of automatically moving, in response to an unlocking command, the slider from its active position to its retracted position when the door is in its closed position, this actuator comprising for this purpose: - an electric motor (182), - a partially toothed wheel (186) driven in rotation by the motor, this partially toothed wheel comprising on its periphery a toothed portion (190) and a portion (192) without teeth, characterised in that: - the slide (48) has teeth (176), - the toothed portion (190) is capable of meshing with the teeth of the slide to move it along its sliding axis (150) from its active position to its retracted position, and - the portion (192) without teeth is shaped so that, in the retracted position of the slide, it is opposite the teeth of the slide and thus disengages the wheel (186) and the slide (48) so as to allow manual movement of the slide without causing the wheel to rotate.

2. Door guard according to claim 1, wherein: - the slide extends along the sliding axis from a proximal end to a distal end capable of directly engaging mechanically with the arm to prevent, by positive engagement, movement of the door beyond its open position, and - the slider comprises an inclined surface (172) which, as it moves from the distal end of the slider towards its proximal end, rises away from the sliding axis until it reaches a cylindrical portion (158) of the slider that extends over a length equal to or greater than the amplitude of movement of the slider between its active and retracted positions, and - the door guard comprises: - a frame (180) capable of being fixed without any degree of freedom to the door, and - an elastic hoop (178) attached without any degree of freedom to the frame so as to be located at the foot of the inclined plane when the slider is in its retracted position, this elastic hoop being capable of elastic deformation when the slider is moved from its retracted position to its active position, in order to move up the inclined plane (172) and reach the cylindrical portion (158) on which it can slide.

3. Door guard according to any of the preceding claims, wherein: - the door guard comprises a sensor (94) capable of detecting the presence of the portion (192) without teeth opposite the teeth (176) of the slider, and - a control module (96) capable of controlling the motor (182) to trigger the rotation of the wheel (186) in response to the release command and to maintain the rotation of the wheel until the sensor detects once again the presence of the toothless portion (192) opposite the teeth of the slider.

4. Door guard according to claim 3, wherein: - the actuator comprises a boss or recess (198) driven in rotation by the motor, and - the sensor comprises: - a lamella (200) moved by this boss or recess when the motor shaft rotates, and - a transducer (202) capable of converting this movement of the lamella into an electrical signal representative of the angular position of the toothless portion (192) relative to the teeth of the slide.

5. Door guard according to any of the preceding claims, wherein: - the slide extends along the sliding axis from a proximal end to a distal end capable of directly engaging mechanically with the arm to prevent, by positive engagement, the door from moving beyond its open position, the distal end comprising a bulge (164) for this purpose, and - the arm extends from a rotation axis (140) integral with the fixed upright to a free end (142), this arm comprising: - an orifice (144) capable of being passed through by the bulge when the door is in its closed position and the slider is moved to its active position, and - a slot (146) extending from the opening towards the free end of the arm, the width of this slot being less than the width of the bulge in order to retain the distal end of the slider trapped inside this slot as soon as this distal end slides inside this slot.

6. Door strip suitable for mounting on an inner face of a housing door, this door being rotatable relative to a fixed jamb between: - a closed position in which the door completely obstructs an opening allowing entry into the dwelling, - an open position in which the door allows a visitor to enter the dwelling, and - a partially open position in which the door partially obstructs the opening to leave a gap through which the visitor is visible from inside the dwelling while being sufficiently narrow to prevent the visitor from entering the dwelling, this door strip comprising: - a bolt mechanism (50) capable of being moved: - from a protruding state in which at least one bolt (42) is in an extended position in which it locks the door in its closed position by positive engagement with a corresponding cavity integral with a door frame, - to a retracted state in which each bolt (42) is in a retracted position in which the door can be moved from its closed position to its open position, - an actuating system (56) capable of moving the bolt mechanism from its protruding state to its retracted state, - a slide (48) of a door guard (50), this slide being manually movable in translation along a translation axis (150), directly by hand by a user located inside the housing, between: - an active position in which, by cooperating with an arm integral with the fixed upright, it is capable of preventing the door from moving beyond its partially open position, and - a retracted position in which it allows the door to move to its open position, characterised in that the slide has teeth (176) and the door strip has an actuator (90) capable of automatically moving the slide from its active position to its retracted position in response to an unlocking command when the door is in its closed position, this actuator comprising for this purpose: - an electric motor (182), and - a partially toothed wheel (186) driven in rotation by the motor, this partially toothed wheel comprising on its periphery: - a toothed portion (190) capable of meshing with the teeth of the slide to move it along the sliding axis from its active position to its retracted position, and - a portion (192) without teeth which, when facing the teeth of the slide, disengages the wheel and the slide to allow manual movement of the slide without rotating the wheel.

7. Door strip according to claim 6, wherein the door strip comprises an electronic central unit (80) configured to, in response to receiving an unlock command, command the actuating system (56) to move the bolt mechanism from its protruding state to its retracted state, said central unit (80) comprising a control module (96) adapted, in response to receiving the release command, to control the actuator (90) to automatically move the slide from its active position to its retracted position.

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