Gearbox arrangement for operating an automatic door seal and door seal with this gearbox arrangement

Description

[0001] The present invention relates to a gear arrangement with a gear for actuating an automatic door seal and a door seal with this gear arrangement.

[0002] Automatic door seals are used, particularly in doorways without thresholds, to seal the gap between the bottom of the door leaf and the floor, preventing noise, smoke, flames, and / or air from passing through. Automatic door seals have a sealing strip with a sealing element, usually a profile, which is pressed against the floor when the door is closed to seal the gap. When the door is open, it lifts from the floor to allow the door leaf to move without the sealing element dragging on the floor.

[0003] Such automatic door seals are known, for example, from CN 209 855 627 U. This document describes a sealed soundproof door consisting of a door frame and a door panel. A sealed soundproof device is attached to the bottom of the door panel. When the door panel is closed, the sealed soundproof device is in a sealed soundproof position and is released from this position when the door panel is opened. According to the soundproof door design, the soundproof device is attached to the bottom of the door panel; therefore, when the door is closed, the soundproof strip of the device can automatically lower to seal and insulate the gap between the door panel and the floor.

[0004] Such seals can also be provided at other points on doors, for example at the top of a door, to seal a gap between the door leaf and a door frame in the case of a non-rebated door leaf, or between the door leaf and the ceiling in the case of floor-to-ceiling doors.

[0005] In addition to the sealing strip, the seals feature a movement mechanism to move the sealing strip between a sealing position and a release position. This movement mechanism is connected to a trigger. A force can be applied to the movement mechanism via this trigger to move the sealing strip from the release position to the sealing position. Furthermore, the movement mechanism is connected to a return mechanism, which usually incorporates a return spring. Alternatively, such a return spring can be an integral part of the movement mechanism, for example, a leaf spring to which the sealing strip is attached. This spring bulges when a force is applied to the trigger and thus to the movement mechanism. When the trigger is released, the return spring moves the sealing strip into the release position, providing the necessary force.The restoring force opposes the movement of the sealing strip into the sealing position. Therefore, when the sealing strip moves into the sealing position, the restoring force exerted by the restoring spring must be overcome.

[0006] The trigger mechanism usually protrudes beyond the door leaf on one narrow side. When the door closes, it strikes the door frame or another fixed element and is thereby depressed in. This principle is used for both hinged and sliding doors.

[0007] With sliding doors, a disadvantage arises in that the restoring force of the return spring opposes the closing movement of the door leaf. In unfavorable cases, this restoring force can even move the door leaf of a closed sliding door out of its closed position, leaving a gap. At the very least, the effect of a return spring can manifest itself in the fact that overcoming the force of the return spring to completely close the sliding door requires more effort than would otherwise be necessary to close the sliding door.

[0008] The invention was based on the objective of finding a solution to reduce the effect of the return spring against the closing force applied when closing a sliding door.

[0009] This problem is solved by a transmission arrangement according to claim 1, which can be used in or with an automatic door seal.

[0010] The gear arrangement according to the invention has the following features: a. A trigger, b. at least one gear element, and c. a transmission element, d. which form a gear, e. wherein the trigger has a stop surface with which the trigger can strike a door frame or other element to introduce a force into the gear, f. wherein the trigger and the transmission element are coupled via the at least one gear element, g. wherein the transmission element has a connecting or mounting structure to connect the transmission element to a movement mechanism or a trigger of the automatic seal, or to bear against the movement mechanism or the trigger of the automatic seal, and h. wherein a gear ratio of the gear is greater than 1.

[0011] Such a gear arrangement can be used with an automatic door seal as specified in claim 9 or within an automatic door seal as specified in claim 10. Using a gear arrangement designed according to the invention, it is possible to reduce the force required to actuate the door seal. Since the force required to move the sealing strip from the release position to the sealing position when closing the sliding door is not introduced directly into the movement mechanism or via a trigger of the door seal, but rather via the gear arrangement, it is possible to utilize the gear arrangement to reduce the force. The gear ratio is selected to be greater than 1 in order to reduce the external force required to move the sealing strip from the release position to the sealing position.This does come at the expense of the actuation distance: the trigger of the gear assembly must travel a greater distance to move the sealing strip than the trigger of a door seal without the gear assembly according to the invention. However, the advantages of the reduced force required outweigh the longer actuation distance.

[0012] The trigger of a gear arrangement according to the invention can have an output structure, and a first gear element of the gear elements can have a drive structure. The output structure of the trigger interacts with the drive structure to transmit a force from the trigger to the first gear element. The trigger can be slidably mounted. The output structure of the trigger can be a rack or a part of a rack. The first gear element can be rotatably mounted. The drive structure of the first gear element can be a first gear ring or a part of a first gear ring that meshes with the rack or the part of the rack.

[0013] The first gear element can have an output structure in addition to its input structure, and a second gear element can have an input structure. The output structure of the first gear element can interact directly or indirectly with the input structure of the second gear element to transmit force from the first gear element to the second gear element. In direct interaction, the force is transmitted directly from the first to the second gear element. In indirect interaction, the force is transmitted from the first to the second gear element via further gear elements.

[0014] The first gear element can have a second gear ring or part of a second gear ring as its output structure. The radius of the second gear ring can be smaller than the radius of the first gear ring.

[0015] The second gear element can also be rotatably mounted. It can have a third gear ring or part of a third gear ring as a drive element. The second gear ring or part thereof can mesh with the third gear ring or part thereof.

[0016] The second gear element can have an output structure in addition to the input structure, and the transmission element can have a input structure. The output structure of the second gear element can interact with the input structure of the transmission element to transmit a force from the second gear element to the transmission element.

[0017] The output structure of the second gear element can be the third gear ring or a fourth gear ring or part of the fourth gear ring, in which case the radius of the fourth gear ring is smaller than the radius of the third gear ring.

[0018] It is also possible, in principle, for the first gear element to have only one toothed ring that meshes both the output structure of the trigger and the third toothed ring of the second gear element, or part of the third toothed ring. In that case, the second gear element must also have the fourth toothed ring, or part of the fourth toothed ring, in addition to the third toothed ring or part of it.

[0019] It is therefore possible according to the invention that at least one of the drive structures and / or at least one of the output structures is a rack, a part of a rack, a ring gear or a part of a ring gear.

[0020] A gear arrangement according to the invention can have a housing in or on which the trigger, the at least one gear element and the transmission element are rotatably or linearly displaceably mounted.

[0021] The trigger can protrude from the housing through a first opening on one side, allowing an external force to be applied to the trigger. The housing can have a second opening on the opposite side from the first opening, through which the transmission element protrudes and / or through which the transmission element's connection structure is accessible for connecting it to a trigger or a motion mechanism.

[0022] Preferably, the housing of the gearbox assembly is arranged within the sealing element. This particularly facilitates the installation of the two housings in a groove in a door leaf.

[0023] Further features and advantages of the invention are described below with reference to the drawings of an exemplary embodiment. These show: Fig. 1 a perspective, non-isometric bird's-eye view of an automatic door seal according to the invention with a gear arrangement and with a sealing strip in the release position, Fig. 1a a perspective, isometric bird's-eye view of an automatic door seal according to the invention with a gear arrangement and with a sealing strip in the sealing position, Fig. 2 the door seal in the view as in Fig. 1 , however without housing and sealing element and only partially shown movement mechanism, Fig. 2adie door seal in the view as in Fig. 1a , however without housing and sealing element and only partially shown movement mechanism, Fig. 3 the door seal in view as in Fig. 1 , however without housing, sealing element and housing cover of the gear assembly and only partially shown movement mechanism, Fig. 3adie door seal in the view as in Fig. 1a, however without housing, sealing element and housing cover of the gearbox assembly and only partially shown movement mechanism, Fig. 4 a non-isometric view of the front of the door seal in the release position without housing, sealing element and housing cover of the gearbox assembly and only partially shown movement mechanism, Fig. 4a an isometric view of the front of the door seal in the sealing position without housing, sealing element and housing cover of the gearbox assembly and only partially shown movement mechanism, Fig. 5 a non-isometric view of the back of the door seal in the release position without housing, sealing element and housing cover of the gearbox assembly and only partially shown movement mechanism, Fig. 5a an isometric view of the back of the door seal in the sealing position without housing, sealing element and housing cover of the gearbox assembly and only partially shown movement mechanism, Fig.Fig. 6a is a non-isometric view of a trigger side of the door seal in the release position with only a partial representation of the movement mechanism, and Fig. 6a is an isometric view of the trigger side of the door seal in the sealing position without the housing, sealing element, and housing cover of the gear assembly, and with only a partial representation of the movement mechanism.

[0024] It is not necessary for a device according to the invention to have all the features described below. It is also possible for a device according to the invention to have only individual features of the embodiment described below.

[0025] The automatic door seal according to the invention comprises two mounting brackets 1 (of which only one is shown), a housing 2, a movement mechanism, a sealing strip 3, 6 with a support profile 6 and a sealing profile 3 as a sealing element and a gear arrangement 7 according to the invention.

[0026] The housing 2 of the seal, the movement mechanism and the sealing strip 6 can basically be designed in the same way as in a known automatic door seal.

[0027] The housing 2 can in particular be a profile with a largely uniform cross-section, especially an extruded profile made of aluminum or plastic.

[0028] The movement mechanism, of which only one rod 51 is shown in the figures, can in particular be a movement mechanism with scissor elements or with leaf springs. If a movement mechanism with scissor elements is chosen, the seal also has a return spring. If the movement mechanism is a mechanism with leaf springs, the return spring is formed by the leaf springs and is thus an integral part of the movement mechanism.

[0029] The support profile 6 of the sealing strip can also be a profile with a largely uniform cross-section, in particular an extruded profile made of aluminum or plastic. The support profile is attached to the movement mechanism and supports the sealing profile 3. The sealing profile 3 can, in particular, be inserted into the support profile 6 or bonded to the support profile 6. In preferred embodiments, the sealing profile 3 consists of an elastomer. The elastomer can be silicone. The sealing profile 3 can also be designed in a known manner.

[0030] The support profile 6 is notched at a trigger-side end of the seal to create space for the gear arrangement 7 in the release position of the sealing strip 3, 6.

[0031] The housing 2 is essentially U-shaped and has a web 21 that connects the ends of two outer legs 22, which are essentially parallel to each other. A channel is formed in the housing 2 by two legs 23 that project inwards from the outer legs 22. The rod 51 of the movement mechanism is slidably and guided in this channel 2. Mounting brackets 1 can be inserted into the ends of the channel, allowing the seal to be attached to a door leaf. Furthermore, a housing 73, 74 and a transmission element 72 of the gear assembly 7 are inserted into the channel. The housing 73, 74 of the gear assembly has retaining structures 741, and the transmission element 72 has guide structures 741 that engage in the channel of the housing 2.

[0032] The rod 51 of the movement mechanism is movable in the direction of the longitudinal extension of the housing 2. This longitudinal movement of the rod 51 is converted by the remaining, not shown, part of the movement mechanism into a transverse movement of the sealing strip 3, 6 between the release position and the sealing position.

[0033] Unlike known seals, the rod 51 is not directly connected to a trigger through which a force can be introduced into the seal to actuate the movement mechanism and move the sealing strip 3, 6 from the release position to the sealing position. In the seal according to the invention, instead of a trigger, the inventive gear assembly 7 is connected to the rod 51 of the movement mechanism, which itself has a trigger. The rod 51 can be designed like the corresponding rod of a known seal. A thread 511 is provided at a trigger-side end of the rod. In known seals, the trigger of the seal is screwed onto this thread, but in the seal according to the invention, it is connected to the gear assembly 7, specifically to the transmission element 72 of the gear assembly 7.

[0034] The gear assembly 7 comprises the trigger 71, the housing 73, 74 with the housing cover 73 as a further part of the housing, a housing shell 74, the transmission element 72, and a first gear element 75 and a second gear element 76. The trigger 71, the two gear elements 75, 76, and the transmission element 72 form a gear unit. The trigger 71 is the element of the gear unit into which a force is applied, and the transmission element 72 is the part of the gear unit at which a greater force is applied. The gear unit has a transmission ratio greater than 1.

[0035] The trigger 71 is slidably mounted in the housing 73, 74 of the gear assembly 7. It protrudes from a first opening at its end face of the housing 73, 74. By applying force to the trigger 71, it can be moved linearly into or within the housing 73, 74. To move the sealing strip 3, 6 from the release position to the sealing position, the trigger 71 must be moved by a distance of length l1.

[0036] The trigger 71 has a rack 711 in at least one area within the housing 73, 74. The trigger 71 can transmit the absorbed force via this rack 711. The rack 711 thus forms an output structure of the trigger 71.

[0037] The first gear element 75 is rotatably mounted in the housing 73, 74 of the gear assembly 7 and has a portion of a first gear ring 751 with a first radius r1 around the axis of rotation of the first gear element 75. This portion of the first gear ring 751 forms a drive structure through which the force delivered by the trigger 71 is introduced into the first gear element 75. For this purpose, the drive structure of the first gear element 75 meshes with the rack 711 of the trigger 71. The first gear element 75 also has a second gear ring 712. This has a second radius r2 around the axis of rotation of the first gear element 75, which is smaller than the first radius r1. The second gear ring 752 forms an output structure of the first gear element 75.

[0038] When the first gear element 75 rotates, the angular velocity at the first gear ring 751, or at the drive structure of the first gear element 75, is converted into a lower angular velocity at the second gear ring 752, or at the output structure of the first gear element 75. Simultaneously, the torque received at the drive structure is converted into a higher torque at the output structure.

[0039] The second gear element 76 is a gear with a third tooth ring 761 having a third radius r3 around an axis of rotation of the second gear element. The second gear element is also rotatably mounted in the housing of the gear assembly. The third radius r3 corresponds to the second radius r2. The third tooth ring 761 serves simultaneously as the drive and output structure of the second gear element 76. The second gear element 76 does not change the torque; it merely reverses the direction.

[0040] The transmission element 72, like the trigger 71, has a rack 721, which forms the drive structure of the transmission element 72. The third gear 761 of the second gear element 76 meshes with this rack 721. This converts the torque at the third gear 761 into a corresponding force at the rack 721. Due to the transmission via the first gear element 75, this force is greater than the force applied to the trigger 71. At the same time, the distance traveled by the transmission element 72 when the trigger 71 is actuated is also less than the distance traveled by the trigger 71 itself.

[0041] The transmission element 72 has a threaded bore. It is screwed onto the rod 51 of the movement mechanism by means of this bore. The movement of the transmission element 72 is thereby directly introduced into the rod 51 and thus into the movement mechanism of the seal according to the invention.

[0042] By means of the gear arrangement 7, it is thus possible to reduce the force required to move the sealing strip 3, 6 from the release position to the sealing position, and which must therefore be introduced into the movement mechanism. Conversely, the force of the return spring, which acts on the trigger 71 of the gear arrangement 7 via the rod 51, is also reduced by the gear arrangement. This prevents the door from opening due to the action of the return spring.

Claims

1. Gear arrangement (7) for use in or with an automatic door seal, - with an actuator (71), - with at least one gear element (75, 76) and - with a transmission element (72), - which form a gear, - wherein the actuator (71) has an abutment surface (711) with which the actuator (71) can abut against a door frame or another element in order to introduce a force into the gear, - wherein the actuator (71) and the transmission element (72) are coupled via the at least one gear element (75, 76), - wherein a gear ratio of the gear is greater than 1, characterized in that the transmission element (72) has a connection or abutment structure in order to connect the transmission element (72) - to a movement mechanism or an actuator of the automatic seal or - to a movement mechanism or an actuator (71) of the automatic seal.

2. Gear arrangement (7) according to Claim 1, characterized in that the actuator (71) of the gear arrangement (7) has an output structure (712), a first gear element (75) of the gear elements (75, 76) and a drive structure (751), and the output structure (712) of the actuator (71) of the gear arrangement (7) interacts with the drive structure (751) in order to transmit a force from the actuator (71) of the gear arrangement (7) into the first gear element (75).

3. Gear arrangement (7) according to Claim 2, characterized in that the first gear element (75) has, in addition to the drive structure (751), an output structure (752), a second gear element (76) of the gear elements (75, 76) and a drive structure (761), and the output structure (752) of the first gear element (75) interacts indirectly or directly with the drive structure (761) of the second gear element (76) in order to transmit a force from the first gear element (75) into the second gear element (76).

4. Gear arrangement (7) according to Claim 3, characterized in that the second gear element (76) has, in addition to the drive structure (761), an output structure (762) and the transmission element (72) has a drive structure (721), and the output structure (762) of the second gear element (76) interacts with the drive structure (721) of the transmission element (72) in order to transmit a force from the second gear element (76) into the transmission element (72).

5. Gear arrangement (7) according to one of Claims 1 to 4, characterized in that at least one of the drive structures and / or at least one of the output structures is a toothed rack, a part of a toothed rack, a toothed ring or a part of a toothed ring.

6. Gear arrangement (7) according to one of Claims 1 to 5, characterized in that the gear arrangement (7) has a housing (73, 74), in or on which the actuator (71) of the gear arrangement (7), the at least one gear element (75, 76) and the transmission element (72) are mounted in a rotatable or linearly displaceable manner.

7. Gear arrangement (7) according to Claim 6, characterized in that the actuator (71) of the gear arrangement (7) projects out of the housing (73, 74) through a first opening on a first side.

8. Gear arrangement according to Claim 6 or 7, characterized in that the housing (73, 74) has, on a side of the housing (73, 74) opposite the first opening, a second opening, out of which the transmission element (72) projects and / or via which the connecting structure of the transmission element (72) is accessible in order to connect it to a movement mechanism or an actuator (71) of the automatic seal.

9. Arrangement with an automatic door seal, wherein the automatic door seal has - a housing (2), a movement mechanism, a sealing strip (3, 6), an actuator and a restoring spring, - wherein the restoring spring is an integral part of the movement mechanism or a non-integral part of the movement mechanism, - wherein the sealing strip (3, 6) is fastened to the movement mechanism and the movement mechanism is fastened to the housing (2), - wherein the actuator is coupled to the movement mechanism, and - wherein, when the actuator is loaded via the actuator, a force can be introduced into the movement mechanism in order to displace the sealing strip (3, 6) from a release position into a sealing position and to tension the restoring spring, and - wherein, when the actuator is relieved from the movement mechanism, a force from the restoring spring can be used to displace the sealing strip (3, 6) from the sealing position into the release position, - characterized in that - the arrangement has a gear arrangement (7) according to one of Claims 1 to 8 and the connection or abutment structure of the transmission element (72) of the gear arrangement (7) is connected to the actuator of the automatic seal or bears against the actuator.

10. Arrangement according to Claim 9, characterized in that the housing (2) of the door seal and the housing (73, 74) of the gear arrangement (7) are arranged in alignment with one another.

11. Automatic door seal - having a housing (2), a movement mechanism, a sealing strip (3, 6) and a restoring spring, - wherein the restoring spring is an integral part of the movement mechanism or a non-integral part of the movement mechanism, - wherein the sealing strip (3, 6) is fastened to the movement mechanism and the movement mechanism is fastened to the housing (2), - wherein the movement mechanism has a force introduction element (51), - wherein, when the force introduction element (51) is loaded via the force introduction element (51), a force can be introduced into the movement mechanism in order to displace the sealing strip (3, 6) from a release position into a sealing position and to tension the restoring spring, and - wherein, when the force introduction element (51) is relieved from the movement mechanism, a force from the restoring spring can be used to displace the sealing strip (3, 6) from the sealing position into the release position, characterized in that - the door seal has a gear arrangement (7) according to one of Claims 1 to 8 and the connection or abutment structure of the transmission element (72) of the gear arrangement (7) is connected to the force introduction element (51) of the automatic seal or bears against the force introduction element (51).

12. Door seal according to Claim 11, characterized in that the housing (73, 74) of the gear arrangement (7) is arranged within the sealing element (3).

13. Door seal according to Claim 11, characterized in that the gear arrangement (7) is arranged within the housing (2) of the seal.