CN113677861A

CN113677861A - Drive gear mechanism for a lifting slide element with a lockable drive rod and lifting slide element provided with such a drive gear mechanism

Info

Publication number: CN113677861A
Application number: CN202080027901.3A
Authority: CN
Inventors: 斯特凡·米特莱纳
Original assignee: Maco Technologie GmbH
Current assignee: Maco Technologie GmbH
Priority date: 2019-04-11
Filing date: 2020-03-09
Publication date: 2021-11-19
Anticipated expiration: 2040-03-09
Also published as: EP3921495A1; CN113677861B; WO2020207677A1; EP3921495B1; DE102019109642A1; PL3921495T3

Abstract

The invention relates to a drive gear mechanism for lifting and lowering a lifting and lowering sliding element, such as a lifting and lowering sliding door or window, which is movable along a guide rail and can be transferred from a lowered position to a lifted position. The drive gear mechanism comprises an input shaft which is rotatably mounted in the gear mechanism housing and which can be rotated about an axis by means of a drive lever between a locking position corresponding to the lowered position of the lifting slide element and a release position corresponding to the raised position of the lifting slide element, wherein the input shaft can be coupled via a connecting rod with a stroke element for raising and lowering the lifting slide element with a driving effect. According to the invention, the drive gear mechanism further comprises a spring pawl arranged in the gear mechanism housing, by means of which spring pawl the input shaft is locked in its locking position.

Description

Drive gear mechanism for a lifting slide element with a lockable drive rod and lifting slide element provided with such a drive gear mechanism

Technical Field

The invention relates to a drive gear mechanism for a lifting slide element, such as a lifting slide door or a lifting slide window, which drive gear mechanism is movable along a guide rail and can be moved from a lowered position into a raised position. In this lowered position, the lifting slide element is immovable. In this raised position, the lifting slide element can be moved along the guide rail. The drive gear mechanism has an input shaft which is rotatably mounted in a gear mechanism housing, also referred to herein as a gear mechanism housing, and which can be rotated about an axis by means of a drive lever between a locking position corresponding to the lowered position of the lifting slide element and a release position corresponding to the raised position of the lifting slide element, wherein the input shaft can be coupled with a driving effect via a connecting rod to the stroke element.

Background

The aforementioned stroke elements for raising and lowering the lifting and lowering slide elements are usually so-called travelling carriages

The movable cart is disposed in an accommodating portion formed in a lower side of the elevation slide member. The mobile carriage has a raised position and a lowered position, wherein in the lowered position the mobile carriage stands on the guide rail, thereby transferring the weight of the lifting slide element to the guide rail. In the raised position, on the other hand, the contact of the mobile carriage with the guide rail is cancelled or the mobile carriage does not stand on the guide rail, so that the lifting slide element rests directly on the slide rail and the weight of the lifting slide element is transferred directly to the slide rail.

The drive of the mobile vehicle takes place by rotating the input shaft of the drive gear mechanism by means of the drive rod, wherein this rotational movement is transmitted to the mobile vehicle via the drive gear mechanism and the connecting rod coupled thereto. When the mobile carriage is lowered from its raised position into its lowered position, the drive rod first performs an idle stroke, usually over an angle of about 40 °, until the rollers of the mobile carriage stand on the guide rails. During the spatial and temporal course, no or only negligible frictional forces act on the mobile carriage and thus on the drive rod. Only when the drive rod continues to pivot after the idle stroke does the weight of the lifting slide element be loaded onto the mobile carriage, so that a greater drive force or a greater drive torque is now required in order to lift the lifting slide element by means of the drive rod.

As already mentioned, the drive rod is substantially unstressed during the idle stroke, which has the result that: if the operator accidentally hooks onto or rubs against the drive rod, the drive rod experiences an accidental tilt. The risk of an unintentional tilting of the drive rod can also be increased, for example, by a drive force reduction device, for example a (gas) spring, which reacts to the weight of the lifting slide element not only during the lowering of the lifting slide element but also during the lifting of the lifting slide element. With such a drive force reduction device, the drive rod may thus perform an idle stroke even without the action of an external force, thereby tilting in an undesired manner.

Disclosure of Invention

The invention is therefore based on the object of: the drive gear mechanism of the type initially proposed is improved such that no unintentional tilting of the drive rod occurs, in particular in the case of the use of a drive force reduction device.

Based on a drive gear mechanism of the type mentioned at the outset, this object is achieved by the features of claim 1, in particular by: the drive gear mechanism also comprises a spring catch (Federastone) arranged in the gear mechanism housing or in the gear mechanism case, by means of which the input shaft is locked in its locking position. Such spring fingers are sometimes also referred to as snap fasteners

Or simply just as buttons

The spring pawl is contained in the gear housing and is thus a component of the drive gear.

Since the spring pawl is engageable with the input shaft in the locked position of the input shaft, the input shaft is held in the locked position of the input shaft against the torque acting on the input shaft by the braking force reducing device, whereby the unintentional tilting of the drive lever can be prevented.

Likewise, in the event that an operator accidentally hooks at or accidentally rubs against the drive rod, accidental tilting of the drive rod can be prevented by the spring catch. However, if the operator wants to lift the lifting slide element so that it can move along its guide rail, it is only necessary for the operator to apply a slightly larger driving force to the brake lever or a slightly larger driving torque to the input shaft in order to overcome the locking action of the spring catch. Thereby, the spring catch is disengaged or the spring catch releases the input shaft, so that thereafter the input shaft can be freely rotated in a desired manner by means of the drive lever in order to lift the lifting slide element.

Therefore, if it is mentioned here that the input shaft is secured in its locked position by means of spring fingers, this is to be understood as: the input shaft is locked in its locked position to prevent unintentional rotation, but can be rotated out of its locked position in the desired manner in the event of a large force loading.

Now, preferred embodiments of the present invention are discussed below. Further embodiments can also be derived from the dependent claims, the description of the figures and the figures themselves.

Thus, according to one embodiment, it may be proposed: the spring finger includes a first spring seat fixed at the gear mechanism housing and thereby fixed and a second spring seat translatable relative to the first spring seat. The spring of the spring finger is tensioned between two spring seats, thereby tensioning or pushing the second spring seat against the input shaft. For example, the second spring seat can have a flat contact surface for contacting an likewise flat opposing contact surface which is provided on the input shaft, wherein the contact surface of the second spring seat and the opposing contact surface of the input shaft are in contact with one another in the locked position. By the two contact surfaces in question being in full contact with one another in the locked position of the input shaft, the input shaft can thus be locked to some extent in its locked position. More precisely, when the input shaft is rotated into its locking position, the input shaft is subjected to a certain restoring torque near its locking position by means of the spring catch, by means of which the input shaft is pushed against and locked in the locking position.

According to a further embodiment, the spring catch can have a defined engagement element which engages in a form-fitting manner in at least one recess provided in or on the input shaft in the locking position of the input shaft. According to a preferred embodiment it can be provided that: the engagement member is located on the movable second spring seat. Alternatively, however, it is also possible: defined engagement elements are formed on the input shaft which engage in corresponding recesses on the second spring seat in the locked position of the input shaft.

In order to provide a defined travel path for the second spring seat, along which the second spring seat can be translated, according to a further embodiment it can be provided that: the first spring seat has a first spring retainer and a first guide element extending from the first spring retainer, and the second spring seat has a second spring retainer and a second guide element extending from the second spring retainer, the second guide element being translationally guided by the first guide element.

In order to be able to lock the spring on the spring catch against falling down (verliercicher), the spring can be supported on the first spring retainer and the second spring retainer and surround the two guide elements. The spring is thus held in place by the two guide elements so that the spring does not disengage from the two spring races.

According to one embodiment, the first guide element may be, for example, a pin extending from the first spring retainer, while the second guide element may be a hollow cylinder extending from the second spring retainer and receiving the pin. Alternatively, the second guide element may be a pin extending from the second spring retainer, and the first guide element may be a hollow cylinder extending from the first spring retainer and receiving the pin. Thus, like the piston of an internal combustion engine, the pins pass through the respective cylinders, thereby making it possible to ensure that: the second spring seat can perform only a translational stroke movement in a desired manner.

The direction of movement of the second spring seat is therefore not only preset by the spring path of the spring, but is determined by the two guide elements. Since the second spring seat is in contact with the input shaft of the drive gear mechanism, the second spring seat cannot deflect perpendicular to the spring path of the spring, which would otherwise lead to overstressing the spring pawl or even to its breaking.

According to a further embodiment, the coupling element can be provided as a cylinder, in particular as a needle roller, which is rotatably supported on the second spring element. Therefore, when the input shaft rotates, the second spring retainer is not dragged along the input shaft under the action of sliding friction; in contrast, the cylinder or needle roller rolls along the outer circumference of the input shaft, so that, in the long term, no undesired wear phenomena occur on the second spring plate or on the input shaft.

In order to be able to rotatably support the cylinder or the needle roller, according to a further embodiment, the second spring plate can have, on its side opposite the second guide element, a nose (Steg) which projects perpendicularly to the face of the second spring plate and forms a recess for rotatably supporting the needle roller or the cylinder.

According to a further embodiment, the cylindrical body can project on both sides over the mentioned nose, and the input shaft has two hub sections which are spaced apart axially from one another and each have a recess in which the section of the cylindrical body projecting over the nose engages positively in the locked position of the input shaft. In this case, the protruding nose of the intermediate section of the second spring seat, which receives the cylinder, extends into the distance between the two hub sections of the input shaft, while the two protruding sections of the cylinder roll on the hub sections in order to be able to engage in a form-fitting manner in the mentioned recess in the locked position of the input shaft.

In order to be able to lock the spring catch in the interior of the gear mechanism housing, according to a further embodiment, the first spring plate can have at least one nose-like projection on two mutually opposite sides, which preferably extends in the plane of the spring plate. In this case, the projections mentioned engage positively in corresponding openings which are formed in mutually opposite walls of the gear housing, whereby the first spring catch is positively locked on the wall of the gear housing. Thus, no additional fasteners, such as screws, rivets, etc., are required to be able to secure the first spring retainer in the gear mechanism housing.

The second spring plate can also have at least one nose-like projection on each of the two opposite sides, which projection preferably extends perpendicularly to the plane of the spring plate. In this case, the mentioned projections can engage in corresponding cutouts or elongated openings which are formed in mutually opposite walls of the gear mechanism housing, whereby the second spring plate is locked displaceably on the walls of the gear mechanism housing.

According to a further aspect of the invention, a lifting slide element and in particular a lifting slide door or a lifting slide window is provided, which has a drive gear mechanism according to the preceding embodiments.

Drawings

The invention is described in more detail below, according to embodiments, with reference to the attached drawings, in which:

FIG. 1 is a schematic view of a lift slide element having a drive force reducing arrangement;

FIG. 2 is a cross-sectional view through a gear mechanism housing having a drive gear mechanism according to the present invention for raising and lowering a lift slide element including a spring finger;

FIG. 3 is an enlarged view of detail X of FIG. 2;

FIG. 4 is an exploded view of the drive gear mechanism according to the present invention; and

fig. 5 is an enlarged view of detail Y of fig. 4.

Detailed Description

Fig. 1 is a schematic illustration of a lifting slide element 19 according to the invention, which lifting slide element 19 can be moved in a horizontal direction along a guide rail on the underside, not shown here. For this purpose, the lifting slide element 19 has two movable carriages 25 on its underside, which movable carriages 25 are arranged in a receiving section 21 in the form of a groove which is configured in the underside of the lower frame part 22 of the frame of the lifting slide element 19.

The lifting slide 19 has a lowered position and a raised position, wherein, unlike the raised position, the lifting slide 19 cannot be moved in the lowered position. In order to enable the lifting slide element 19 to be transferred between the lowered position and the raised position, the lifting slide element 19 has a lifting device, indicated overall by the reference numeral "10", by means of which the lifting slide element 19 can be selectively raised and lowered.

Here, the lifting device 10 mentioned includes: a drive rod 27 located at the side frame part 23 of the elevation slide member 19; two stroke elements in the form of two mobile carriages 25 for raising and lowering the lifting and lowering slide element 19; and a transmission gear mechanism via which two stroke elements in the form of two movable carriages 25 are coupled with a driving effect with the drive rod 27. The transmission gear mechanism here comprises in particular: a first link 26, which first link 26 is coupled with a drive lever 27 via a drive gear mechanism 100 with a driving effect; a second connecting rod 29, which second connecting rod 29 is coupled with the two mobile carriages 25 with a driving effect; and a deflection member 32, which deflection member 32 is in the form of, for example, a deflection gear mechanism, via which deflection member 32 the two connecting

rods

26, 29 are in turn drivingly coupled to one another in the corner region of the frame of the lifting slide element 19. By pivoting the drive lever 27 according to the arrow 28 from its locking position 27 '(in which locking position 27' the lifting slide element 19 is in its lowered position) shown in dashed lines into its open or unlocking position 27 ″, the lifting slide element 19 can be lifted by the two mobile carriages 25, so that the lifting slide element 19 can be moved along a guide rail, not shown.

The first connecting rod 26 extends in a receiving section 20 formed as a recess, which receiving section 20 is formed in the side frame part 23 of the lifting slide element, while the second connecting rod 29 extends in a receiving section 21 formed in the underside of the frame of the lifting slide element 19, which receiving section 21 is also used to receive two mobile carriages 25. The two receiving sections 20, 21 (the two connecting

rods

26, 29 being arranged in the two receiving sections 20, 21) are locked by a first crimping rail (Stulpschiene)34 or a second crimping rail 36, along which the respective connecting

rod

26, 29 is guided movably, wherein the second crimping rail 36 is however not necessarily necessary, since the lower receiving section 21 is not visible.

As can also be seen from the illustration in fig. 1: the fitting device (beschlagagarden) also has a gas spring 40, which is only schematically illustrated in fig. 1 and which is coupled on the one hand to the first connecting rod 26 and on the other hand to the first crimping rail 34. Additionally or alternatively, the fitting arrangement may also comprise a second gas spring 42, which second gas spring 42 is coupled on the one hand to the second link 29 and on the other hand to the second crimping rail 36. The two gas springs 40, 42 are located in the

respective receiving section

20, 21 behind the respective crimping

rail

34, 36 and the respective associated connecting

rod

26, 29, respectively, and are therefore not visible from the outside.

Since the gas spring 40 or the gas springs 40, 42 are thus coupled on the one hand to the respective connecting

rod

26, 29 and on the other hand to the respectively associated crimping

rail

34, 36, which is fixedly mounted on the lifting slide element 19, the

respective gas spring

40, 42 is increasingly pretensioned when the lifting slide element 19 is lowered and is increasingly released when the lifting slide element 19 is lifted. Thus, due to the fact that the gas springs 40, 42 are coupled with the respective connecting

rods

26, 29, the respective gas springs 40, 42 receive and temporarily store at least a part of the potential energy of the lifting slide element 19 released when the lifting slide element 19 is lowered, so that this potential energy can be given back to the lifting slide element 19 when the lifting slide element 19 is subsequently lifted. The

respective gas spring

40, 42 is therefore loaded when the lifting slide 19 is lowered, so that an increasing force directed counter to the direction of movement of the respective connecting

rod

26, 29 during lowering is exerted on the respective connecting

rod

26, 29. The holding force to be exerted by means of the drive rod 27 is therefore reduced with respect to the case in which the fitting device according to the invention is not used when lowering, so that the risk of the drive rod 27 springing up in its locking position is reduced.

In contrast, if the drive lever 27 is pivoted downward from its locking position 27' shown in fig. 1 according to arrow 28 into an open or unlocking position 27 ″ in order to be able to be lifted via the mobile carriage 25 and thus via the lifting slide element 19, the force required for this is reduced compared to the case without the fitting arrangement according to the invention, since a part of the weight force of the lifting slide element 19 to be lifted does not have to be exerted via the drive lever 27, but is provided as a counter force by the gas springs 40, 42. The energy temporarily stored in the gas springs 40, 42 during the lowering of the lifting slide 19 is therefore released during the lifting of the lifting slide 19, wherein a force acting in the direction of movement of the respective connecting

rod

26, 29 is exerted on the connecting

rod

26, 29, thereby making the lifting easier. The lifting of the lifting slide 19 is thus supported by the gas springs 40, 42, so that a low force has to be applied to drive the rod 27. However, since the drive lever 27 first performs an idle stroke when pivoting from its locking position until the movable carriage 25 stands on the guide rail, there is a risk that: the drive lever 27 is pushed against in the direction of the unlocked position of the drive lever 27 by drive force reducing means in the form of gas springs 40, 42, and tilting is easily caused.

In order to prevent such tilting of the drive rod 27, according to the invention, a spring catch 120 is integrated in the gear housing 106, also referred to herein as gear housing 106, of the drive gear mechanism 100, by means of which spring catch 120 the input shaft 101 can be locked in its locking position 27'.

Fig. 2 shows the drive gear mechanism 100 according to the invention in a position in which the drive lever 27 is in a position corresponding to the locking position 27' of the input shaft 101. Drive rod 27, which is only schematically illustrated here, has a square shaft 102, square shaft 102 engaging in a form-fitting manner with a square sleeve head 104, square sleeve head 104 being rotatably supported in a gear mechanism housing 106 and forming input shaft 101 of drive gear mechanism 100.

Two hub sections 118 are formed on the square sleeve head 104, which are spaced apart from one another in the axial direction, which hub sections 118 are each formed as an eccentric cam 108 (see in particular fig. 4 and 5), to which eccentric cam 108 the articulation point 112 of a coupling element 110 is articulated, which coupling element 110 establishes a drive-effective connection between the input shaft 110 in the form of the square sleeve head 104 of the drive gear mechanism 100 and the connecting rod 26, which in turn is coupled in a drive-effective manner with the mobile carriage 25 of the lifting and lowering slide element 19 in the manner and method described above. The coupling element 110 is connected to the link 26 in an articulated manner, for which purpose it hooks into a corresponding opening in the link 26 or in the link 26, which allows both longitudinal and transverse forces to be transmitted from the link 26 to the coupling element 110. The coupling element 110 is therefore hooked in a drop-proof manner into the connecting rod 26, so that no additional guide has to be provided, by means of which the coupling element 110 can be prevented from being detached from the connecting rod 26 when the coupling element 110 is pivoted about the hinge point 112.

Since the coupling element 110 is thus coupled on the one hand to the connecting rod 26 and on the other hand to the input shaft 101 or the square socket head 104, the rotation of the coupling element 110 is converted into a longitudinal movement of the connecting rod 26, which is necessary for the lifting and lowering of the mobile wagon 25, since the coupling element 110 is eccentrically articulated on the square socket head 104.

Since the gas springs 40, 42 as the driving force reducing means upwardly bias the link 26, there is a risk that: the drive-effective connection of the connecting rod 26 to the input shaft 101 via the coupling element 110 pivots the drive lever 27 from its vertically upwardly oriented locking position 27' in the direction of its unlocking position, thus tilting slightly. To counteract this tilting of drive rod 27, according to the invention, a spring catch 120 is integrated into gear mechanism housing 106 of drive gear mechanism 100, by means of which spring catch 120 such tilting can be prevented.

As best seen in fig. 4: the housing box 106 has two housing shells 122 which are connected to one another, the drive gear mechanism 100 according to the invention, including its spring claws 120, being located between the side walls 124 of the two housing shells, wherein the drive gear mechanism 100 is carried by the housing walls 124.

As can be derived from the overview of fig. 2 to 5: the spring finger 120 has a fixed or immovable first spring seat 126 and a second spring seat 128 that is translatable relative to the first spring seat 126. Furthermore, the spring catch 120 comprises a helical spring 114, which helical spring 114 is tensioned between two

spring seats

126, 128, whereby the second spring seat 128 is prestressed with respect to the input shaft 101 and in particular with respect to the eccentric cams 108 of the hub section 118, which are spaced apart from one another in the axial direction. The spring 114 is supported here on a first spring retainer 130 and a second spring retainer 132 and surrounds two

guide elements

134, 136, whereby the spring 114 is locked against falling onto the spring pawl 120.

The first spring seat 126 has a first spring seat 130, from which first guide elements 134 in the form of pins extend in the direction of the second spring seat 128. In a corresponding manner, the second spring seat 128 also has a second spring seat 132 from which a second guide element 136 in the form of a hollow cylinder extends in the direction of the first spring seat 126 and receives the pin 134, whereby the second spring seat 128 is guided by the first guide element 134 to execute a translatory stroke movement.

In order to fix the first spring seat 126 on the two housing walls 124, the first spring plate 130 has two nose-like projections 138 on the sides opposite one another, the nose-like projections 138 extending in the plane of the first spring plate (see fig. 5). The projections 138 engage in form-fitting fashion in corresponding openings 140, which openings 140 are formed in the housing wall 124 (see fig. 4), as a result of which the first spring seat 126 is firmly fixed to the gear housing 106 or to both housing walls 124.

The second spring plate 130 also has two nose-like projections 142 on two mutually opposite sides, respectively, the nose-like projections 142 extending perpendicularly to the plane of the second spring plate 132 (see fig. 5 in particular) and engaging in corresponding cutouts 144 or slot openings 144, which cutouts 144 or slot openings 144 are formed in the mutually opposite housing walls 124 (see fig. 4). The second spring seat 128 is therefore locked in a translatory manner on the housing wall 124 and can thus be prestressed against the eccentric cam 108 of the input shaft 101 as a result of the prestressing action of the spring 114.

Although, by means of the two eccentric cams 108 being formed with flat contact surfaces which are in contact with the flat contact surfaces of the eccentric cams 108 in the locking position of the input shaft 101 and the second spring retainer 132 also being formed in a corresponding manner with flat contact surfaces, the input shaft 101 can be held in its locking position 27' by means of the spring catch 120.

However, in the embodiment shown here it is proposed that: the spring catch 120 has a defined engagement element 146 in the form of a needle roller 146, which engagement element 146 engages in a form-fitting manner in a semicircular recess 154 in the locking position 27' of the input shaft 101, which recess 154 is formed on the eccentric cams 108 of the hub sections 118 which are spaced apart from one another in the axial direction.

The needle roller 176 is rotatably mounted on the second spring retainer 132, for which purpose the second spring retainer 132 has a lug 150 on its side opposite the second guide element 136, which lug 150 extends perpendicularly to the surface of the second spring retainer 132, and which lug 150 forms a recess 148 for rotatably receiving the needle roller 146, see fig. 3 for this purpose. The nose 150 is formed parallel to the two housing walls 124 and parallel to the two hub sections 118 of the input shaft 101, such that the nose 150 is located between the two hub sections 118.

As can be derived initially from fig. 5: the needle roller 146 protrudes beyond the lug 150 on both sides in the axial direction, so that a section of the needle roller 146 protruding beyond the lug 150 can engage in a recess 154, which recess 154 is formed on the underside of the eccentric cam 108, as a result of which the input shaft 101 is locked in its locking position 27' by means of the spring catch 120 in the desired manner.

List of reference numerals

10 lifting device

19 lifting slide element

20 accommodating section

21 receiving section

22 lower frame part

23 side frame parts

25 moving vehicle

26 first link

27 drive rod

27' locked position

27 "open position

28 arrow head

29 second connecting rod

32 deflecting piece

34 first crimping track

36 second hem rail

40 first air pressure spring

42 second gas spring

100 drive gear mechanism

101 input shaft

102 square shaft

104 square sleeve head

106 gear housing or gear housing

108 eccentric cam

110 coupling element

112 hinge point

114 spring

118 hub section

120 spring claw

122 shell body

124 housing wall

126 first spring seat

128 second spring seat

130 first spring retainer

132 second spring retainer

134 first guide element/pin

136 second guide element/hollow cylinder

138 convex part

140 opening

142 convex part

144 slotted hole opening/cutout

146 coupling element/needle roller

148150 recess

150 protruding nose

154108 recess

Claims

1. A drive gear mechanism (100) for lifting and lowering a lifting and lowering sliding element (19), for example for lifting and lowering a lifting and lowering sliding door or window, the drive gear mechanism (100) being movable along a guide rail and being movable from a lowered position, in which the lifting and lowering sliding element (19) is immovable, to a lifted position, in which the lifting and lowering sliding element (19) is movable,

wherein the drive gear mechanism (100) comprises an input shaft (101), the input shaft (101) being rotatably supported in a gear mechanism housing (106) and being rotatable about an axis by means of a drive lever (27) between a locking position (27') corresponding to the lowered position of the lifting slide element (19) and a release position corresponding to the raised position of the lifting slide element (19), wherein the input shaft (101) is coupled with a stroke element (25) for lifting and lowering the lifting slide element via a connecting rod (26) with a driving effect,

wherein the drive gear mechanism (100) further comprises a spring catch (120) arranged in the gear mechanism housing (106), by means of which spring catch (120) the input shaft (101) is locked in its locking position (27').

2. The drive gear mechanism according to claim 1,

wherein the spring catch (120) comprises a first fixed spring seat (126) and a second spring seat (128) which is displaceable relative to the first spring seat (126), wherein the spring (114) of the spring catch (120) is tensioned between the two spring seats (128, 130), by means of which spring catch (120) the second spring seat (128) is prestressed relative to the input shaft (101).

3. The drive gear mechanism according to claim 1 or 2,

wherein the spring catch (120) has an engagement element (146), which engagement element (146) engages in a form-fitting manner in a recess (154) of the input shaft (101) in the locking position (27') of the input shaft (101), wherein in particular provision is made for: the engagement element (146) is located on the movable second spring seat (128).

4. Drive gear mechanism according to claim 2 and/or 3,

wherein the first spring seat (128) comprises a first spring retainer (132) and a first guide element (134) extending from the first spring retainer (132), and the second spring seat (128) comprises a second spring retainer (132) and a second guide element (136) extending from the second spring retainer (132), the second guide element (136) being translationally guided by the first guide element (134).

5. The drive gear mechanism according to claim 4,

wherein the first guide element (134) is a pin extending from the first spring retainer (130) and the second guide element (136) is a cylinder extending from the second spring retainer (132), the cylinder housing the pin; or

Wherein the second guide element (136) is a pin extending from the second spring retainer (132) and the first guide element (134) is a cylinder extending from the first spring retainer (130), the cylinder housing the pin.

6. The drive gear mechanism according to claim 4 or 5,

wherein the spring (114) is supported on the first spring retainer (130) and the second spring retainer (132) and surrounds two guide elements (134, 136).

7. The drive gear mechanism according to at least one of claims 4 to 6,

wherein the coupling element (146) is formed as a cylinder, in particular as a needle roller, which is rotatably mounted on the second spring retainer (132), wherein in particular: the second spring retainer (132) is formed with a nose (150) on its side opposite the second guide element (136), the nose (150) having a recess (148) for rotatably receiving the needle roller.

8. The drive gear mechanism according to at least one of claims 4 to 7,

wherein the engaging element (146) protrudes on both sides over the nose (150) and the input shaft (101) has two hub sections (118) which are spaced apart from one another axially, the hub sections (118) each having a recess (154), the section of the engaging element (146) protruding over the nose (150) engaging in the recess (154) in a form-fitting manner in the locking position (27') of the input shaft (101).

9. The drive gear mechanism according to at least one of claims 4 to 8,

wherein the first spring retainer (130) has at least one projection (138) on two mutually opposite sides, respectively, wherein the projections (138) engage in corresponding openings (140) to fix the first spring retainer (130) on the gear transmission housing (106), the openings (140) being formed in mutually opposite walls (124) of the gear transmission housing (106).

10. The drive gear mechanism according to at least one of claims 4 to 9,

wherein the second spring retainer (132) has at least one protrusion (142) on each of two mutually opposite sides, wherein the protrusions (142) engage within corresponding cutouts (144) to slidingly secure the second spring retainer (132) on the gear transmission housing (106), the cutouts (144) being formed in mutually opposite walls (124) of the gear transmission housing (106).

11. Drive gear mechanism according to at least one of the preceding claims,

wherein the drive gear mechanism (100) further comprises a coupling element (110), the coupling element (110) being used for drivingly coupling the input shaft (101) with the connecting rod (26), the connecting rod (26) being drivingly coupled with the stroke element (25), the connecting rod (26) being eccentrically hinged to the input shaft (101) at a deflection point (112).

12. Lifting slide element (19), in particular lifting slide door or lifting slide window, the lifting slide element (19) having a drive gear mechanism (100) according to at least one of the preceding claims.