Wall box and system

Abstract

Wall box (1) for the passage of exhaust air from the interior of a building through a building wall to the outside, with a housing (22) for attachment to a ventilation pipe (17), and a closure element (2) which can be moved between at least two positions and is designed to release a passage opening (3) of the housing (22) for the exhaust air in an open position and to close it in a closed position, characterized by at least one locking clamp (16), wherein the locking clamp (16) is designed to clamp the housing (22) of the wall box (1) to the ventilation pipe (17) in a locking manner, wherein the at least one locking clamp (16) has a locking wedge (23) which is guided in a groove-shaped locking guide (24) of the housing (22).

Description

[0001] The invention relates to a wall box for the passage of exhaust air from the interior of a building through a building wall to the outside, comprising a housing for fastening in a ventilation pipe, and a closure element which can be displaced between at least two positions and which is designed to release a passage opening of the housing for the exhaust air in an open position and to close it in a closed position.

[0002] Such a wall conduct is known from EP 2 383 526 B1. The disadvantage of the wall conduct described here is that fastening the wall conduct in the ventilation duct is very complex. For this purpose, a collar with drilled holes is provided on the housing of the wall conduct, through which fastening elements such as screws can be passed in order to screw the wall conduct into the ventilation duct. Screwing the wall conduct into the ventilation duct requires a great deal of dexterity due to the limited space in the ventilation duct. A further disadvantage of the wall conduct described here is that the adjustment drive and the gear must generate a particularly high drive force if the locking element is frozen to the opening of the wall conduct in the closed position during winter weather conditions.This extreme load on the adjustment drive and gear unit must be taken into account when designing the wall box to avoid damage. With the existing design, this requires considerable power reserves for the adjustment drive and gear unit, which are rarely required in temperate climates. This makes the wall box expensive to manufacture and requires considerable installation space, which restricts the passage opening and thus the flow path for the exhaust air.

[0003] A wall box mentioned above is also known from DE 20 2022 103 328 U1. Another disadvantage of the wall box described here is that attaching it to the ventilation duct is very complex and also unstable. The wall sleeve of the wall box is secured by at least one clamping rib located on the outside of the wall sleeve. On the inside, locking receptacles are also provided, which are designed to connect a connecting element to the opening of the wall sleeve.

[0004] DE 10 2016 220 897 A1 also describes a wall box with a closure element, whereby only a snap-in, plug-in or bayonet connection is described here in order to releasably lock a connection piece in a housing.

[0005] DE 10 2019 113 400 A1 describes a locking mechanism for a fastening device on a flexible pipe.

[0006] From WO 2016 / 142 521 A2 an adjusting device with a closure flap for closing a closure opening on a vehicle is known.

[0007] It is therefore an object of the invention to provide an improved wall box which is simpler in construction, can be manufactured at lower costs, requires less installation space so that the flow path for the exhaust air is less restricted, and can be installed more easily in a ventilation pipe.

[0008] This problem is solved by a wall box with the features of claim 1 and by a wall box with the features of claim 2.

[0009] By using a locking clamp on the wall box, which is designed to clamp the wall box housing to a ventilation duct by locking it in place, the invention ensures particularly simple installation of the wall box in the ventilation duct. The housing can thus be easily inserted into the ventilation duct and secured in place by the locking clamp. This is achieved by clamping the wall box to the ventilation duct via the locking clamp.

[0010] According to the invention, the cylindrical housing is designed to be inserted concentrically into a round ventilation duct, and the locking clamp is designed to generate a radially outwardly directed clamping force to secure the housing inserted into the ventilation duct. The outwardly directed clamping force allows for particularly simple fastening of the cylindrical housing in the round ventilation duct. The clamping force of the locking clamp ensures a secure, force-locking connection of the housing in the ventilation duct, eliminating the need for additional fastening devices on the wall box, ventilation duct, or building.

[0011] One embodiment of the invention relates to the at least one locking clamp having a locking wedge which is guided in a groove-shaped locking guide of the housing. This locking wedge ensures effective bracing of the housing in the ventilation duct in the groove-shaped locking guide. By locking the locking wedge in the groove-shaped locking guide, a clamping force can be easily generated and, by guiding the locking wedge along the locking guide, can also be increased. By guiding the locking wedge in the locking guide, larger tolerances between the housing and the ventilation duct can also be easily compensated. The locking mechanism ensures that the bracing is maintained permanently, but can also be released again simply by releasing the locking mechanism, e.g. in order to remove the wall conduct for maintenance or repair work.

[0012] Advantageous embodiments and further developments of the invention emerge from the dependent claims. It should be noted that the features listed individually in the claims can also be combined with one another in any technologically expedient manner, thus revealing further embodiments of the invention.

[0013] According to an advantageous embodiment of the invention, the at least one locking clamp can be actuated via the passage opening of the housing. The locking clamp is simply actuated via the passage opening located inside the wall box housing, which is easily accessible from the outside. The locking clamp can thus be actuated extremely easily after inserting the housing into the ventilation duct to lock the wall box housing into the ventilation duct. This also makes it easy to align the wall box during installation in the ventilation duct before the housing is secured by actuating the locking clamp.

[0014] A particularly advantageous embodiment of the invention provides that the locking wedge is designed to generate a clamping force in a locking position between the locking guide of the housing and the ventilation pipe in order to secure the housing inserted into the ventilation pipe in the ventilation pipe. The locking clamp preferably has several locking positions, which gradually increase the clamping force generated by the locking wedge and the locking guide during locking and compensate for tolerances between the housing and the ventilation pipe.

[0015] A particularly advantageous embodiment of the invention provides an adjustment drive for the wall box and at least one gear mechanism of the wall box driven by the adjustment drive, which is coupled to the closure element for moving the closure element between the closed position and the open position. The gear mechanism is designed to transfer the closure element from the closed position to the open position in an oscillating movement, namely a superimposed pivoting and pushing movement. This allows the wall box to be constructed more easily and manufactured at lower cost. Furthermore, the adjustment drive and gear mechanism require less installation space, as the design requires fewer power reserves for extreme conditions.The swinging movement of the locking element from the closed position to the open position allows the locking element to be easily released from the wall box opening, even in winter weather conditions, even if the locking element is frozen to the wall box opening. The superimposed swinging and pushing movement from the closed position to the open position ensures that the gear driven by the adjustment drive can release the locking element from the wall box opening particularly easily using the swinging movement, even if the locking element is frozen to the opening due to winter weather conditions. The swinging movement exerted by the gear allows the frozen locking element to be easily peeled off the opening at an angle, reducing the force required.This allows the adjustment drive and the gearbox to be designed with lower power reserves for extreme conditions, which saves the required installation space and reduces the restriction of the flow path for the exhaust air.

[0016] According to an advantageous embodiment of the invention, the closure element is a circular plug. Such a plug makes it particularly easy to implement a peeling function at a circular passage opening of the wall box, which ensures easy release of the plug from the circular passage opening by means of the oscillating movement exerted by the gear from the closed position to the open position.

[0017] Particularly preferred is an embodiment in which the gear mechanism for coupling to the closure plug comprises an eccentrically arranged joint about which the closure plug can pivot against an elastic restoring force. The joint is preferably designed as a diaphragm joint. The eccentric coupling of the gear mechanism to the closure plug causes a pivoting movement of the closure element from the closed position at an angle to an opening force exerted by the gear mechanism via the joint on the closure element when the closure element is released from the passage opening. This allows a particularly effective oscillating movement, namely a superimposed pivoting and pushing movement from the closed position to the open position, to be effected by the gear mechanism.These movements provide a simple peeling function, which, using the force exerted by the gear, causes the closure plug to easily release from the circular passage opening when the closure element is moved from the closed position to the open position. The elastic restoring force is preferably generated by a spring element arranged between the closure element and the gear. For this purpose, the spring element is advantageously designed to be loaded during the pivoting movement of the closure element and to align the closure element using spring force. In the closed position, the spring element can be subjected to tensile stress, thus achieving a tight closure of the passage opening with the closure element aligning itself to the passage opening using the spring.

[0018] A particularly advantageous embodiment of the invention relates to the pivoting movement having a rotational component with a rotational axis in a plane of the closure plug, wherein the pushing movement has a translational component in a direction perpendicular to the plane of the closure plug. The rotation of the closure plug about a rotational axis, which preferably lies in the plane of the closure plug or a plane parallel thereto, provides the rotational component of the pivoting movement, which enables easy release of the closure plug from the passage opening of the wall box. The closure element is preferably locked to a receiving plate attached to the joint and pivotable relative to the gear. The translational component of the pushing movement allows the closure plug to be easily removed from the passage opening of the wall box so as not to restrict the flow path for the exhaust air in the open position.In this case, the sealing plug is preferably displaced translationally by the gear unit perpendicular to the plane of the sealing plug or a plane parallel to it. The plane of the sealing plug is preferably formed by an outer surface facing the weather side of the wall box.

[0019] A particularly advantageous embodiment of the invention provides for the gear unit to be a flat, swivel-joint gear unit. A flat, swivel-joint gear unit allows for a particularly simple and space-saving drive design. The flat, swivel-joint gear unit minimally restricts the flow path of the exhaust air through the wall box, as the exhaust air can flow past the gear unit on both sides.

[0020] An advantageous embodiment of the invention provides for the gear to be four-linked and to comprise a frame, two lever links of different lengths, each connected to the frame via a pivot joint, and a coupling link, each connected to a pivot joint with each lever link, and coupled to the locking element. The four-linked gear enables a simple and stable construction of the wall conduct. The gear enables the locking element to be moved securely from the locked position to the open position and back again, in the desired swinging motion. Particularly when releasing the locking element from the passage opening of the permanent conduct, the simply constructed gear generates sufficient force to reliably move the locking element out of the locked position, even in winter weather conditions.The gear mechanism also generates sufficient force to close the passage opening in the closed position. Preferably, the gear mechanism forms a lever arm kinematics for performing a superimposed parallel displacement and rotation of the closure element between the closed position and the open position.

[0021] A particularly advantageous embodiment is one in which the adjustment drive is a rotary drive mounted on the frame, which is coupled to one of the lever members in a torque-transmitting manner. Such a rotary drive can be designed particularly compactly, so that the passage opening and thus the flow path for the exhaust air are minimally restricted by the arrangement of the adjustment drive in this area.

[0022] An advantageous embodiment of the invention provides that the kinematics of the gear mechanism are designed such that the oscillating movement of the closure element during transition from the closed position to the open position has a primarily rotational component in a first phase of the oscillating movement and a primarily translational component in a subsequent second phase of the oscillating movement. With the rotation at the beginning of the oscillating movement of the closure element during transition from the closed position to the open position, the kinematics of the gear mechanism can generate a particularly strong breakaway force, which enables reliable release of the closure element from the passage opening of the wall box even in winter weather conditions, even if the closure element is frozen to the passage opening or stuck for other reasons.

[0023] A particularly advantageous embodiment is one in which the driven gear generates a breakaway force of at least 150 N for the first 2 mm of movement of the closure element from the closed position to the open position. This breakaway force is sufficient to safely release the closure element from the passage opening even in winter weather conditions, even if it is frozen in the closed position.

[0024] The invention also relates to a system comprising a wall box described in more detail above and below and a ventilation pipe in which the wall box can be clamped in a locking manner.

[0025] Further features, details, and advantages of the invention will become apparent from the following description and the drawings, which show an exemplary embodiment of the invention. Corresponding objects or elements are provided with the same reference numerals in all figures. They show: Fig. 1 wall box according to the invention, Fig. 2 wall box with slightly opened locking element, Fig. 3 wall box without the locking element, Fig. 4 Sectional view through the wall box, Fig. 5 Side view of the locking element in the closed position Fig. 6 Side view of the gearbox, Fig. 7 further side view of the gearbox, Fig. 8 Side view of the locking element in open position, Fig. 9 Sectional view through wall box, Fig. 10 Sectional view through locking clamp, and Fig. 11 View of locking wedge.

[0026] In the Fig. 1, designated by the reference numeral 1, shows a wall box according to the invention. This wall box 1 serves to convey exhaust air, in particular from an extractor hood, from the interior of a building to the outside. For this purpose, the wall box 1 is inserted into an opening in a building wall (not shown). The wall box 1 is preferably connected to the extractor hood via a ventilation pipe 17, so that the exhaust air from the extractor hood can be guided out of the kitchen through the building wall during operation. When the connected extractor hood is not in operation, the wall box 1 seals off the building wall to the outside. For this purpose, the wall box 1 has a closure element 2, which can be moved between two positions. In the closure position shown here, the closure element 2 closes a passage opening 3 ( Fig. 2) of the wall box 1, through which the exhaust air from the extractor hood exits the building during operation. This protects the building, and in particular the ventilation pipe 17, from external weather when the extractor hood is switched off. The closure element is designed as a substantially circular plug 2.

[0027] The Fig. 2 shows the wall box 1 according to Fig. 1 from a slightly different perspective. In this illustration, the closure element 2 is also slightly lifted and pivoted from the passage opening 3. This is done by a gear 5 ( Fig. 4) is implemented, which is coupled to the closure element 2 for moving it between the closed position and the open position and is described in more detail below. Via the gear 5 ( Fig. 4), the closure element 2 can also be moved further away from the passage opening 3, so that it completely releases the passage opening 3 in an open position. The gear 5 ( Fig. 4) is controlled by an adjustment drive 4 ( Fig. 4) so ​​that the closure element 2 can be automatically moved between the two positions.

[0028] In Fig. 3, the wall box 1 is according to the Fig. 1 and Fig. 2 is also shown, wherein the closure element 2 ( Fig. 1) has been removed for further explanation. This shows that the closure element 2 ( Fig. 1) is preferably locked to a receiving plate 18 which can be pivoted relative to the gear 5. Furthermore, a locking clamp 16 can be seen which is designed to fix the wall box 1 to a ventilation pipe 17 ( Fig. 1) in its end area. This provides a simple way to attach the wall box 1 to the building without the need for additional fastening devices on the wall. As shown in Fig. 3, the wall box 1 has a frame 19 which encloses the air path formed in the wall box 1 and a closure element 2 ( Fig. 2) forms a closable passage opening 3. The closure element 2 ( Fig. 1) rests against the frame 19 in the closed position and is positioned at a distance from the passage opening 3 in the open position.

[0029] The Fig. 4 shows a sectional view through the wall box 1 according to the Fig. 1 to 3. In this sectional view, the closure element 2 is raised at a similar angle from the passage opening 3 as in Fig. 2. For this purpose, the gear 5 is driven by the adjustment drive 4. The gear 5 is designed as a simple, flat rotary joint gear. For this purpose, the gear 5 has a four-link structure. It has a frame 10, two lever links 12, 13 of different lengths, each connected to the frame 10 via first rotary joints 11, 11a, and a coupling link 15, which is connected to both lever links 12, 13 via second rotary joints 14, 14a and is coupled to the closure element 2. The frame 10 is fastened to the housing 22. The adjustment drive 4 is a rotary drive arranged on the frame 10, which is coupled to one of the lever links 12, 13 in a torque-transmitting manner. The gear 5 is designed to thereby move the closure element 2 in an oscillating movement, namely a superimposed pivoting and pushing movement, from the closed position ( Fig. 1 and Fig. 5) into the open position ( Fig. 8). This allows a simple wall conduct 1 to be manufactured at lower cost. The adjustment drive 4 and the gear 5 also require little installation space, as the design only needs comparatively low power reserves for extreme conditions. The oscillating movement of the closure element 2 from the closed position to the open position enables the closure element 2 to be easily released, even if it is stuck to the passage opening 3. The oscillating movement exerted by the gear 5 results in the closure element 2 being peeled off from the passage opening 3 at an angle, so that the amount of force required for this is comparatively low. The gear 5 shown nevertheless generates a breakaway force of over 150 N for the first 2 mm of movement of the closure element 2 from the closed position to the open position.Furthermore, the gear 5 has an off-center joint 6 for coupling to the closure plug 2, about which joint the closure plug 2 can be pivoted against an elastic restoring force. This joint 6 is preferably designed as a diaphragm joint. The elastic restoring force is generated by a spring element 21 arranged between the closure element and the gear. This spring element 21 is arranged such that the closure element 2 can be pivoted against the spring force when moved from the closed position to the open position, preferably as here on the coupling member 15, and the closure element 2 is aligned counter to the pivoting movement by means of the spring force when the spring is relieved. By means of an opposite drive direction of the adjustment drive 4, the closure element 2 can also be moved from the open position to the closed position via the gear 5.

[0030] This locking position is in Fig. 5, which shows a side view of the closure element 2 on the correspondingly actuated gear 5. In the closed position, the spring element 21 can be subjected to tensile stress, so that the closure element 2 ensures a tight closure of the passage opening 3 ( Fig. 4) is realized by the appropriate alignment of the closure element 2 by means of the spring element 21. It can be seen how the lever members 12, 13 move the coupling member 15 coupled to the closure element 2 in the direction of the passage opening 3 ( Fig. 4) can be relocated.

[0031] The Fig. Figure 6, however, shows a side view of the gear 5 during the first phase of the oscillating movement. The kinematics of the gear 5 are designed such that in this first phase of the movement of the closure element 2 during the transition from the closed position to the open position, the oscillating movement mainly has a rotational component 7, which the closure element 2, as shown in Fig. 6 can be seen, opposite the passage opening 3 ( Fig. 4) is tilted. The pivoting movement therefore has a rotational component 7 with a rotational axis in a plane 8 of the closure plug 2.

[0032] Only in a subsequent second phase of the movement, which is approximately in the Fig. 7, the swinging movement mainly has a translational component 9, which moves the closure element 2 into the position shown in Fig. 8. The translational component 9 of the thrust movement is directed perpendicular to the plane of the closure plug 2.

[0033] In Fig. Figure 8 shows a side view of the closure element 2 in the open position. In this position, the closure element 2 can be positioned sufficiently far in front of the passage opening 3 of the wall box so that the exhaust air is not prevented from flowing out.

[0034] The Fig. 9 shows a sectional view through the wall box 1. In this sectional view, the locking clamp 16 is also shown in section. The locking clamp 16 is designed to fix the housing 22 of the wall box 1 to a ventilation pipe 17 ( Fig. 10) to lock. This allows the installation of the wall box 1 in the ventilation pipe 17 ( Fig. 1) can be carried out particularly easily. The locking of the locking clamp 16 allows the housing 22 of the wall box 1 to be inserted into the ventilation pipe 17 ( Fig. 3) simply clamped in. This allows the housing 22 to be easily inserted into the ventilation pipe 17 ( Fig. 3) are inserted, aligned and firmly secured. For this purpose, the wall box 1 is secured in the ventilation pipe 17 ( Fig. 3). For this purpose, the housing 22 is simply clamped under tension in the ventilation pipe 17 ( Fig. 3). A particular advantage is that the locking clamp 16 is accessible via the passage opening 3 of the housing 22, even if the housing 22 is already inserted into the ventilation pipe 17 ( Fig. 10). This means that the locking clamp 16 can still be tightened after the housing 22 has been inserted into the ventilation pipe 17 ( Fig. 10). The housing 22 is cylindrical and can therefore be fitted into a round ventilation pipe 17 ( Fig. 1) so that the housing 22 is oriented concentrically to the round ventilation pipe 17. When actuated, the locking clamp 16 generates a radially outwardly directed clamping force in order to secure the ventilation pipe 17 ( Fig. 3) inserted housing 22 in the ventilation pipe 17 ( Fig. 3) to be determined.

[0035] In Fig. 10 shows a sectional view through the locking clamp 16. This illustration shows the locking wedge 23 of the locking clamp 16, which is guided in a groove-shaped locking guide 24 of the housing 22. The groove-shaped locking guide 24 has a projection 25 on the contact surface 26 for the locking wedge 23, which tapers diagonally in the axial direction. Locking points 28 are arranged on the support surface 27 of the locking wedge 23 in the groove-shaped locking guide 24, which support surface 27 also tapers diagonally in the axial direction. When the locking wedge 23 is axially displaced, it is pressed by the locking guide 24 in the radial direction out of the cylindrical housing 22 and outwards against the round ventilation pipe 17. The projection 25 of the locking guide 24 engages in one of the locking points 28 of the locking wedge 23.In the locking position thus assumed, the locking wedge 23 generates a clamping force between the locking guide 24 of the housing 22 and the ventilation pipe 17 in order to securely fix the housing 22, which has been inserted into the ventilation pipe 17, in the ventilation pipe 17. The locking wedge 23 in the groove-shaped locking guide 24 thus ensures effective bracing of the housing 22 in the ventilation pipe 17. By locking the locking wedge 23 to the projection 25 of the groove-shaped locking guide 24, a clamping force can be easily generated and, with axial guidance of the locking wedge 23 along the inclined locking guide 24, can also be increased in the radial direction by pushing the locking wedge 16 out of the housing 22. The various locking points 28 on the locking wedge 23 also make it easy to compensate for larger tolerances between the housing 22 and the ventilation pipe 17.

[0036] The Fig. 11 shows a view of the individual locking wedge 23. In this illustration, the locking points 28 on the locking wedge 23 can be seen, into which the projection 25 ( Fig. 10) of the locking guide 24 ( Fig. 10) when the locking clamp 16 ( Fig. 3) engages. In addition, a receptacle 29 is formed in the locking wedge 23, into which a slotted screwdriver, for example, can be inserted in order to tighten the locking clamp 16 ( Fig. 10) by pressing the locking wedge 23 in the axial direction in the ventilation pipe 17 ( Fig. 10) via the passage opening 3 ( Fig. 9) to operate. List of reference symbols 1 wall box 2 Closure element (closure plug) 3 passage opening 4 Adjustment drive 5 gearboxes 6 joint 7 Rotation component 8 Level 9 Translation component 10 frame 11, 11a First swivel joints 12 First lever link 13 Second lever link 14, 14a Second swivel joints 15 coupling link 16 locking clamps 17 Ventilation pipe 18 support plates 19 frames 20 fasteners 21 Spring element 22 housings 23 Locking wedge 24 locking guide 25 lead 26 contact surface 27 support surface 28 rest stops 29 recording

Claims

[1] Wall box (1) for the passage of exhaust air from the interior of a building through a building wall to the outside, with a housing (22) for attachment to a ventilation pipe (17), and a closure element (2) which can be displaced between at least two positions and which is designed to release a passage opening (3) of the housing (22) for the exhaust air in an open position and to close it in a closed position, characterized by at least one locking clamp (16), wherein the locking clamp (16) is designed to clamp the housing (22) of the wall box (1) to the ventilation pipe (17) in a locking manner, wherein the at least one locking clamp (16) has a locking wedge (23) which is guided in a groove-shaped locking guide (24) of the housing (22). [2] Wall box (1) for the passage of exhaust air from the interior of a building through a building wall to the outside, with a housing (22) for attachment to a ventilation pipe (17), and a closure element (2) which can be displaced between at least two positions and which is designed to release a passage opening (3) of the housing (22) for the exhaust air in an open position and to close it in a closed position, characterized by at least one locking clamp (16), wherein the locking clamp (16) is designed to clamp the housing (22) of the wall box (1) to the ventilation pipe (17) in a locking manner, wherein the cylindrical housing (22) is designed to be inserted concentrically into the round ventilation pipe (17), and the locking clamp (16) is designed to generate a radially outwardly directed clamping force in order to fix the housing (22) inserted into the ventilation pipe (17) in the ventilation pipe (17). [3] Wall box (1) according to claim 1 or 2, characterized by that the at least one locking clamp (16) can be actuated via the passage opening (3) of the housing (22). [4] Wall box (1) according to claim 1, characterized by in that the cylindrical housing (22) is designed to be inserted concentrically into the round ventilation pipe (17), and the locking clamp (16) is designed to generate a radially outwardly directed clamping force in order to fix the housing (22) inserted into the ventilation pipe (17) in the ventilation pipe (17). [5] Wall box (1) according to one of claims 2 to 3, characterized by that the at least one locking clamp (16) has a locking wedge (23) which is guided in a groove-shaped locking guide (24) of the housing (22). [6] Wall box (1) according to claim 1 or 5, characterized bythat the locking wedge (23) is designed to generate a clamping force in a locking position between the locking guide (24) of the housing (22) and the ventilation pipe (17) in order to fix the housing (22) inserted into the ventilation pipe (17) in the ventilation pipe (17). [7] Wall box (1) according to one of the preceding claims, characterized by an adjusting drive (4), and at least one gear (5) driven by the adjusting drive (4) and coupled to the closure element (2) for displacing the same between the closed position and the open position, wherein the gear (5) is designed to transfer the closure element (2) in an oscillating movement, namely a superimposed pivoting and pushing movement, from the closed position to the open position. [8] Wall box (1) according to claim 7, characterized by that the closure element is a substantially circular closure plug (2). [9] Wall box (1) according to claim 8, characterized by that the gear (5) for coupling to the closure plug (2) comprises an eccentrically arranged joint (6) about which the closure plug (2) can be pivoted against an elastic restoring force. [10] Wall box (1) according to claim 8 or 9, characterized by that the pivoting movement has a rotational component (7) with a rotational axis in a plane (8) of the closure plug (2), wherein the pushing movement has a translational component (9) in a direction perpendicular to the plane of the closure plug (2). [11] Wall box (1) according to one of claims 7 to 10, characterized by that the gear (5) is a plane rotary joint gear. [12] Wall box (1) according to claim 11, characterized bythat the gear (5) is four-membered and comprises a frame (10), two lever members (12, 13) of different lengths, each connected to the frame (10) via a rotary joint (11, 11a), and a coupling member (15) which is connected to both lever members (12, 13) in turn via a rotary joint (14, 14a) and coupled to the closure element (2). [13] Wall box (1) according to claim 12, characterized by that the adjustment drive (4) is a rotary drive arranged on the frame (10) which is coupled to one of the lever members (12, 13) in a torque-transmitting manner. [14] Wall box (1) according to one of claims 7 to 13, characterized bythat the kinematics of the gear (5) is designed such that the movement of the closure element (2) during the transfer from the closed position to the open position has mainly a rotational component (7) in a first phase of the movement and mainly a translational component (9) in a subsequent second phase of the movement. [15] Wall box (1) according to one of claims 7 to 14, characterized by that the driven gear (5) generates a breakaway force of at least 150 N on the first 2 mm of displacement of the closure element (2) from the closed position to the open position. [16] System comprising a wall box (1) according to one of the preceding claims and a ventilation pipe (17) in which the wall box (1) can be clamped in a locking manner.

Images