Gear arrangement for a spindle drive arrangement, spindle drive arrangement and vehicle seat

Abstract

Gear arrangement (2) for a spindle drive arrangement (1), comprising a gear housing (6) and a gear holder (8), wherein the gear holder (8) has at least two receiving openings (13) for one fastening screw or one fastening bolt for fastening to another component, and wherein these at least two receiving openings (13) are aligned at right angles and / or obliquely to one another, wherein the gear housing (6) and the gear holder (8) have corresponding connecting elements (V1, V2) for connecting the gear housing (6) to the gear holder (8), wherein the connecting elements (V1) of the gear housing (6) are each designed as a bolt (14) and the connecting elements (V2) of the gear holder (8) are each designed as a receiving pocket (15) for receiving one of the bolts (14) or vice versa, characterized in that the receiving pockets (15) each have an insertion opening (16) and a bearing opening (17), and the bolts (14) are each designed such that, in an assembly orientation of the gear housing (6) relative to the gear holder (8), they can be inserted through the respective insertion opening (16) and into the respective bearing opening (17) and can be rotated in the bearing opening (17), and in an alignment of the gear housing (6) relative to the gear holder (8) that deviates from the assembly orientation, in particular in at least one operating orientation of the gear housing (6), passage of the respective bolt (14) through the respective insertion opening (16) is blocked.

Description

[0001] The invention relates to a gear arrangement for a spindle drive arrangement, a spindle drive arrangement and a vehicle seat.

[0002] Spindle drive assemblies, for example for an adjustment mechanism of a vehicle, which is used, for example, for electrically adjusting the height of a vehicle seat, are generally known from the prior art. Such spindle drive assemblies comprise an electric motor and a gear assembly, by means of which a rotary movement of the electric motor is transmitted to a threaded spindle of the spindle drive assembly. The spindle drive assembly makes it possible to convert a rotary movement of the electric motor into a translatory movement via the gear assembly.

[0003] From DE 10 2018 204 195 A1 and US 2007 / 0 108 360 A1 a gear arrangement for a spindle drive arrangement is known, comprising a gear housing and a gear holder, wherein the gear holder has at least two receiving openings for a respective fastening screw or a respective fastening bolt for fastening to another component, and wherein these at least two receiving openings are aligned at right angles and / or obliquely to one another, wherein the gear housing and the gear holder have corresponding connecting elements for connecting the gear housing to the gear holder, wherein the connecting elements of the gear housing are each designed as a bolt and the connecting elements of the gear holder are each designed as a receiving pocket for receiving one of the bolts.

[0004] The object of the present invention is to provide a gear arrangement for a spindle drive arrangement which is improved compared to the prior art, a spindle drive arrangement which is improved compared to the prior art and a vehicle seat which is improved compared to the prior art.

[0005] The object is achieved according to the invention by a gear arrangement for a spindle drive arrangement, which comprises at least a gear housing and a gear holder as components. The gear holder advantageously has at least two receiving openings, each for a fastening screw or a fastening bolt for fastening to another component, in particular to a vehicle seat, wherein these at least two receiving openings are advantageously aligned at right angles and / or obliquely to one another, i.e. in particular are not aligned parallel to one another, but are in particular aligned at an angle to one another which is greater than 0° and can be up to 90°, in particular is 90°. Advantageously, two groups of such receiving openings are provided, i.e. the receiving openings of one group are advantageously aligned at right angles and / or obliquely to the receiving openings of the other group, i.e.i.e. in particular not parallel, but in particular aligned at an angle to one another which is greater than 0° and can be up to 90°, in particular 90°. This makes it possible to fasten the gear holder in two different orientations, for example either horizontally or vertically aligned, to the other component, in particular to the vehicle seat. This gear holder can therefore be used, for example, for different variants of vehicle seats and / or for different variants of the spindle drive arrangement, which differ, for example, in a respective electric motor used for the spindle drive arrangement and / or in a respective threaded spindle used for the spindle drive arrangement. Separate and specifically designed gear holders are therefore not required for each of these variants of the spindle drive arrangement and / or for each of these variants of the vehicle seat.

[0006] The two aforementioned components of the transmission assembly, i.e., the transmission housing and the transmission bracket, have corresponding connecting elements for connecting the transmission housing to the transmission bracket. The connecting elements of one component, i.e., the transmission housing or the transmission bracket, are each designed as a bolt, and the connecting elements of the other component, i.e., the transmission bracket or the transmission housing, are each designed as a receiving pocket for receiving one of the bolts. The receiving pockets each have an insertion opening and a storage opening.The bolts are each designed such that, when the gearbox housing is in an assembly orientation relative to the gearbox holder, they can be inserted through the respective insertion opening and into the respective bearing opening, and they can rotate in the bearing opening. If the gearbox housing is in an orientation relative to the gearbox holder that deviates from the assembly orientation, in particular if the gearbox housing is in at least one operating orientation, the respective bolt cannot be passed through the respective insertion opening. The operating orientation is an orientation that deviates from the assembly orientation. Due to the pivotable mounting of the gearbox housing on the gearbox holder, several such operating orientations can be provided. These operating orientations arise in particular from an adjustment of a component that can be adjusted by means of the spindle drive arrangement, in particular the vehicle seat, for example by an adjustment of the height of the vehicle seat.This results in several operating orientations from one maximum adjustment position to an opposite maximum adjustment position, for example, from the lowest to the highest position of the height-adjustable vehicle seat. The assembly orientation is conveniently not reached, thus preventing accidental disassembly of the transmission mount and transmission housing during this adjustment.

[0007] The respective insertion opening is in particular slot-shaped. The respective bearing opening is in particular round, i.e. it has a round cross-section. The respective bolt is in particular web-shaped. It has in particular a non-circular cross-section, for example an oval, elliptical or rectangular cross-section, advantageously with rounded corners. In particular, the respective bolt is designed such that a length of its cross-section is greater than a width of its cross-section. The width of the cross-section of the respective bolt is smaller than a width of the respective insertion opening and the length of the cross-section of the respective bolt is greater than the width of the respective insertion opening and advantageously corresponds to a diameter of the respective bearing opening.This achieves the situation described above, whereby the bolts can be inserted through the respective insertion opening and into the respective bearing opening in the assembly orientation of the gearbox housing relative to the gearbox holder, and can rotate in the bearing opening. If the alignment of the gearbox housing relative to the gearbox holder deviates from the assembly orientation, the respective bolt cannot pass through the respective insertion opening. The bolts, in particular the length of their cross-section corresponding to the diameter of the respective bearing opening, ensure that the gearbox housing is mounted so that it can rotate relative to the gearbox holder. The bolts arranged in the bearing openings of the receiving pockets form an axis of rotation of the gearbox housing and thus also of a spindle drive of the spindle drive arrangement.

[0008] The gear housing advantageously includes a gear cover. Advantageously, when the gear housing and the gear holder are connected to each other and the gear housing is aligned relative to the gear holder in a manner different from the assembly orientation, an outer side of the gear cover rests against the gear holder and slides along the gear holder during rotational movements of the gear housing relative to the gear holder. As a result, no fixed connection between the gear housing and the gear cover is required in the direction of a spindle axis of the threaded spindle, because the gear cover rests directly on the gear holder and is held in position in the gear housing by it.In particular, operating loads and loads that occur during vehicle collisions are transferred from the threaded spindle via a worm gear of a gearbox encompassing the gearbox housing and the gearbox cover directly into the gearbox mount, without placing any stress on the gearbox housing. This reduces the load on the connecting elements, in particular, as they are not involved in the described load path. As a result, they experience less wear and can be smaller. For example, they can be made of plastic.

[0009] In the gear arrangement described here, the gear holder is advantageously arranged laterally next to the gear housing, in particular in at least one operating orientation of the gear housing to the gear holder, in particular in the axial direction of the threaded spindle, in particular exclusively in this axial direction of the threaded spindle. This means that the gear housing is not circumferentially enclosed by the gear housing, but rather the gear housing and gear housing are positioned laterally next to one another. In particular, the gear holder is arranged in the region of the side of the gear housing on which an end of the threaded spindle protrudes, in particular through the gear cover, and on which an end stop sleeve is arranged. In particular, the gear holder is arranged on a side of the gear housing facing away from the end of the threaded spindle on which a fastening element is arranged.By means of this fastening element, the threaded spindle is connected to a component, in particular on a vehicle seat, which is to be adjusted by means of the spindle drive arrangement, in particular by means of the spindle drive. This connection is thus not obstructed by the transmission mount, since it is located on the other side of the transmission housing.

[0010] In particular, the connecting elements of the gear housing and the connecting elements of the gear holder are each arranged laterally next to the threaded spindle, in particular in at least one operating orientation of the gear housing to the gear holder, in particular laterally next to the threaded spindle in the radial direction of the threaded spindle. Thus, a connecting element pair consisting of a connecting element of the gear housing and a connecting element of the gear holder is arranged laterally next to the threaded spindle in the manner described, so that the threaded spindle is arranged between these two connecting element pairs. In this way, it can move freely, in particular in its axial direction, and is not hindered by the connecting elements and the gear holder.

[0011] The connecting elements are, for example, each designed as tabs, legs or arms on the gear holder or gear housing, wherein the connecting elements designed in this way are laterally spaced from one another on the gear housing and, expediently corresponding thereto, the connecting elements designed in this way on the gear holder are also laterally spaced from one another, so that a free space is created between them for the arrangement of the threaded spindle.

[0012] The connecting elements of the gear housing are formed, for example, on lugs of the gear housing, in particular on both sides of the respective lug, i.e., projecting from an inner side facing the respective other lug and from an outer side of the respective lug facing away from the respective other lug. The two lugs are aligned, at least substantially, parallel to one another and spaced apart from one another, so that there is a clearance between them for the threaded spindle.

[0013] The gearbox mount is particularly double-walled in the region of its connecting elements, which are advantageously designed as receiving pockets, so that the tabs can be or are arranged between the respective outer and inner walls of the gearbox mount. This fixes the gearbox housing and gearbox mount laterally to each other, for example, without play or with a predetermined, particularly slight, play, and in particular prevents the connecting elements from disengaging laterally, for example, when subjected to a lateral force.

[0014] The gear arrangement advantageously comprises not only the gear holder and the gear housing, but the entire gear, ie also gear components arranged in the gear housing, in particular the worm wheel and bearing disks.

[0015] The object is further achieved according to the invention by a spindle drive arrangement comprising the described gear arrangement. This spindle drive arrangement advantageously further comprises an electric motor and / or the threaded spindle.

[0016] The object is further achieved according to the invention by a vehicle seat comprising at least the gear holder of the described gear arrangement. Advantageously, the vehicle seat comprises the described gear arrangement, preferably the described spindle drive arrangement.

[0017] The advantages achieved by the invention consist in particular in the fact that it makes it possible to manufacture the gearbox as a core standard unit by equipping the gearbox housing with all the necessary gearbox components, in particular the worm gear and the bearing disks, and closing it by arranging the gearbox cover on the gearbox housing, in particular by pressing it into the gearbox housing. Subsequently, a respective variant of the electric motor and a respective variant of the threaded spindle can be coupled to the gearbox according to the respective requirements. This core standard unit can thus be used to form a spindle drive that is adapted to the respective requirements. This spindle drive is then connected to the gearbox carrier by connecting the gearbox housing to the gearbox carrier in the manner described above.The gear carrier can already be attached to the other component, in particular to the vehicle seat, or it can be attached to this other component, in particular to the vehicle seat, only subsequently, i.e., with the spindle drive already connected. Due to the differently aligned receiving openings for the fastening screws or bolts, the gear carrier and, via it, the spindle drive can be attached to the respective variant of the vehicle seat in the required orientation, for example, in the y-direction or z-direction of the vehicle seat.

[0018] As an alternative to this connection of the gearbox to the gearbox carrier only after the coupling of the gearbox to the electric motor and the threaded spindle, for example, a core standard pre-assembly group consisting of gearbox and gearbox carrier can first be formed by first manufacturing the gearbox as a core standard unit in the manner described above, by equipping the gearbox housing with all the necessary gearbox components, in particular with the worm wheel and the bearing disks, and by arranging the gearbox cover on the gearbox housing, in particular by pressing it into the gearbox housing, and then connecting this gearbox to the gearbox carrier in the manner described.This core standard pre-assembly group is the same for all variants and can then be coupled with a respective variant of the electric motor and a respective variant of the threaded spindle depending on the requirements of the respective variant and, before or after this coupling with the electric motor and the threaded spindle, be fastened to the other component, in particular to the vehicle seat, by means of the gearbox carrier.

[0019] The solution according to the invention achieves in particular a simplification of assembly, a reduction in the number of parts, a reduction in costs and variant flexibility.

[0020] In particular, the described design of the gearbox mount and the gearbox housing further achieves a noise reduction, particularly compared to a gearbox mount enclosing the gearbox housing in a cage-like manner. This includes a reduction in the run-out noise when the spindle drive reaches its end stop and a reduction in the noise generated by load changes. Furthermore, performance over a lifetime, backlash resistance, and the ability to overcome the spindle drive's end stops are improved. The described rotatable mounting of the gearbox housing with respect to the gearbox mount also enables a larger angle of rotation and thus, for example, a greater seat height adjustment of the vehicle seat.In particular, by transferring loads occurring in vehicle collisions via the gearbox cover directly into the gearbox mount and thereby relieving the load on the connecting elements, collision safety is further improved.

[0021] Embodiments of the invention are explained in more detail with reference to the drawings. In the drawings: Fig. 1 schematically shows a perspective view of a gear arrangement for a spindle drive arrangement according to the prior art, Fig. 2 schematically shows an overview of a plurality of gear holders known from the prior art and spindle drive arrangements formed therewith in comparison with a gear holder which is improved in comparison thereto, Fig. 3 schematically shows an assembly step for assembling a gear arrangement for a spindle drive arrangement, Fig. 4 schematically shows a further assembly step for assembling a gear arrangement for a spindle drive arrangement, Fig. 5 schematically shows a further assembly step for assembling a gear arrangement for a spindle drive arrangement, Fig. 6 schematically shows a perspective view of a gear arrangement for a spindle drive arrangement, Fig. 7 schematically shows a partially exploded view of a spindle drive arrangement, Fig. 8 schematically shows a perspective view of a gear arrangement with a threaded spindle arranged therein for a spindle drive arrangement, and Fig. 9 schematically shows a perspective view of a spindle drive arrangement.

[0022] Corresponding parts are provided with the same reference numerals in all figures.

[0023] Based on the Fig. 1 to 9, a spindle drive arrangement 1 is described below, which is provided, for example, for an adjustment mechanism of a vehicle not shown here, for example for an electrical height adjustment of a vehicle seat of the vehicle not shown here.

[0024] The spindle drive assembly 1 comprises a gear assembly 2, an electric motor 3, and a threaded spindle 4. The gear assembly 2 comprises a gear 5, which includes a gear housing 6 with a gear cover 7 and gear components arranged in the gear housing 6, in particular a worm gear and bearing disks, and a gear holder 8 for fastening the spindle drive assembly 1 to another component, in particular to the vehicle seat. The gear 5, the threaded spindle 4, and the electric motor 3 form a spindle drive 9 of the spindle drive assembly 1.

[0025] The electric motor 3 is coupled to the threaded spindle 4 via the gear 5, expediently via its worm gear. A rotary motion of the electric motor 3 can be transmitted to the threaded spindle 4 via the gear 5, expediently via its worm gear. The spindle drive arrangement 1 thus makes it possible to convert a rotary motion of the electric motor 3 into a translatory motion of the threaded spindle 4 via the gear 5.

[0026] If the spindle drive assembly 1 is used to adjust the height of the vehicle seat, the spindle drive assembly 1 is expediently attached to a part of the vehicle seat by means of the gear holder 8, and one end of the threaded spindle 4 is attached to a part of the vehicle seat that is movable relative thereto, for example, to a respective frame part of the vehicle seat. This end of the threaded spindle 4 expediently has a fastening element 10 for this purpose, which is designed, for example, in the form of a fastening eyelet. To prevent the other end of the threaded spindle 4 from unscrewing from the gear 5, an end stop sleeve 11 is also provided.

[0027] In the exemplary embodiments shown here, the threaded spindle 4 is designed as a non-rotating threaded spindle 4, i.e. the gear 5 acts on a thread 12 of the threaded spindle 4 due to a rotary movement of the electric motor 3, expediently via the worm gear, in such a way that the thread 12 executes a translational movement in the direction of its longitudinal axis, wherein the threaded spindle 4 does not rotate about its longitudinal axis. A rotary movement of the electric motor 3 in one direction of rotation leads to a translational movement of the threaded spindle 4 in one direction and a rotary movement of the electric motor 3 in the opposite direction of rotation leads to a corresponding translational movement of the threaded spindle 4 in the opposite direction, i.e. the threaded spindle 4 moves back and forth depending on the direction of rotation of the electric motor 3.By means of a corresponding coupling with the vehicle seat, a corresponding change in the height of the vehicle seat results when the spindle drive arrangement 1 is used in an adjustment mechanism for electrically adjusting the height of the vehicle seat.

[0028] With such an adjustment mechanism, the spindle drive arrangement 1 is mounted on the vehicle seat in such a way that the spindle drive 9 is mounted rotatably and / or pivotably about a rotation axis A, expediently on the vehicle seat and / or on a frame of the vehicle seat, via which the vehicle seat is or can be attached to the vehicle and which expediently is a component of the adjustment mechanism. The pivoting and / or rotational movement of the spindle drive 9 results from the change in height of the vehicle seat and thus of the end of the threaded spindle 4 arranged thereon, while the spindle drive 9 is mounted via the rotation axis A on the part of the vehicle seat, expediently the frame, which does not undergo this change in height or performs it to a different extent. A reversed arrangement of the end of the threaded spindle 4 and the spindle drive 9 via the rotation axis A is also possible.

[0029] This axis of rotation A, also referred to as rotation axis or pivot axis, is expediently aligned parallel to a Y-axis of the vehicle, i.e. parallel to a transverse axis of the vehicle, in the case of a vehicle seat arranged in the vehicle which is aligned in the direction of travel or opposite to the direction of travel.

[0030] The Fig. The gear assembly 2 shown in Figure 1, which is known from the prior art, is designed as a gear assembly 2 for a so-called cage spindle drive assembly. The gear holder 8, which is used to hold the gear 5 with its gear housing 6 and, above it, to hold the spindle drive 9 and thus the entire spindle drive assembly 1 on the vehicle seat, is designed as a cage.

[0031] The disadvantage here is that with different variants of vehicle seats and with different variants of electric motors 3 and threaded spindles 4, whereby these variants may, for example, require a differently aligned fastening of the spindle drive arrangement 1 to the vehicle seat, a corresponding variety of variants of gear holders 8 is required, as shown for example in Fig. 2. Shown here on the left side are six different variants of gear holders 8 and in Fig. 2 below a variety of spindle drive arrangements 1, for which these different gear holders 8 were previously required. With the solution described below, it is possible to avoid the variety of variants regarding the gear holders 8 and to use a single variant of the gear holder 8, shown as an example in Fig. 2 right, for the different variants of the spindle drive arrangement 1.

[0032] To make this possible, the gear holder 8 of the Fig. 3 to 9, the gear arrangement 2 shown in more detail has at least two receiving openings 13, each for a fastening screw or a fastening bolt for fastening to another component, in particular to the vehicle seat, wherein these at least two receiving openings 13 are advantageously aligned at right angles and / or obliquely to one another, ie in particular are not aligned parallel to one another, but are aligned in particular at an angle to one another which is greater than 0° and can be up to 90°, in particular 90°.

[0033] In the example shown, two groups of such receiving openings 13 are provided, i.e., the receiving openings 13 of one group are advantageously aligned at right angles and / or obliquely to the receiving openings 13 of the other group, i.e., in particular, they are not parallel, but rather aligned at an angle to one another that is greater than 0° and can be up to 90°, in particular 90°. In the example shown, this angle is 90°, i.e., the receiving openings 13 of one group are aligned at right angles to the receiving openings 13 of the other group.

[0034] This makes it possible to fasten the gear holder 8 in two different orientations, for example, either horizontally or vertically, to the other component, in particular to the vehicle seat. Thus, this gear holder 8 can be used for different variants of vehicle seats and / or for different variants of the spindle drive arrangement 1, which differ, for example, in a respective electric motor 3 used for the spindle drive arrangement 1 and / or in a respective threaded spindle 4 used for the spindle drive arrangement 1. Thus, separate and specifically designed gear holders 8 are not required for each of these variants of the spindle drive arrangement 1 and / or for each of these variants of the vehicle seat.

[0035] The transmission arrangement 2 comprises, as components K1, K2, at least the transmission housing 6 and the transmission holder 8. These two components K1, K2 have corresponding connecting elements V1, V2 for connecting the transmission housing 6 to the transmission holder 8. In the example shown, the connecting elements V1 of the transmission housing 6, designed as the first component K1, are each designed as a bolt 14, and the connecting elements V2 of the transmission holder 8, designed as the second component K2, are each designed as a receiving pocket 15 for receiving one of the bolts 14. In other exemplary embodiments, this can also be reversed.

[0036] The receiving pockets 15 each have an insertion opening 16 and a bearing opening 17. The first connecting elements V1, which are designed as bolts 14 and which here are formed laterally projecting from the gear housing 6 designed as the first component K1, are each designed such that they can be inserted through the respective insertion opening 16 and into the respective bearing opening 17 in an assembly orientation of the gear housing 6 to the gear holder 8, as shown in the Fig. 3 and Fig. 4 in two successive assembly steps of the assembly of the gear housing 6, in particular the gear 5, on the gear holder 8, and are rotatable in the bearing opening 17, wherein in the case of an alignment of the gear housing 6, in particular the gear 5, to the gear holder 8 that deviates from the assembly alignment, in particular in at least one operating alignment of the gear housing 6, in particular the gear 5, a passage of the respective bolt 14 through the respective insertion opening 16 is blocked, as in Fig. 5 shown.

[0037] The connection of the gearbox housing 6 and thus of the gearbox 5 with the gearbox holder 8 is made by the Fig. 3 to 5. Gear housing 6 and gear holder 8 are first brought into the assembly alignment with each other, as shown in Fig. 3. Then, the bolts 14 are inserted into the receiving pockets 15 by passing them through the insertion openings 16 until they arrive in the respective storage opening 17, as shown in Fig. 4. Subsequently, the gear housing 6 and the gear holder 8 are rotated relative to each other about the rotation axis A, as shown in Fig. 4 using a pivot arrow P. For example, the gear housing 6 is brought into the operating orientation as shown in Fig. 5. Thus, the passage of the respective bolt 14 through the respective insertion opening 16 is blocked.

[0038] The respective insertion opening 16 is, in particular, slot-shaped. The respective bearing opening 17 is, in particular, round, i.e., it has a round cross-section. The respective bolt 14 is, in particular, web-shaped. It has, in particular, a non-circular cross-section, for example, an oval, elliptical, or rectangular cross-section, advantageously with rounded corners. In particular, the respective bolt 14 is designed such that a length of its cross-section is greater than a width of its cross-section. The width of the cross-section of the respective bolt 14 is smaller than a width of the respective insertion opening 16, and the length of the cross-section of the respective bolt 14 is greater than the width of the respective insertion opening 16 and advantageously corresponds to a diameter of the respective bearing opening 17.This achieves the situation described above, whereby the bolts 14, in the assembly orientation of the gear housing 6 to the gear holder 8, can be inserted through the respective insertion opening 16 and into the respective bearing opening 17 and can rotate in the bearing opening 17. If the alignment of the gear housing 6 to the gear holder 8 deviates from the assembly orientation, the passage of the respective bolt 14 through the respective insertion opening 16 is blocked. The bolts 14, in particular due to the length of their cross-section corresponding to the diameter of the respective bearing opening 17, ensure that the gear housing 6 is mounted rotatably relative to the gear holder 8, whereby the bolts 14 arranged in the bearing openings 17 of the receiving pockets 15 form the axis of rotation A of the gear housing 6 and thus also of the spindle drive 9 of the spindle drive arrangement 1.

[0039] In the example shown, the first connecting elements V1, designed as bolts 14, are formed on both sides of tabs 18 of the gear housing 6, designed as the first component K1, in particular on both sides of the respective tab 18, i.e., projecting from an inner side facing the respective other tab 18 and from an outer side of the respective tab 18 facing away from the respective other tab 18. The two tabs 18 are aligned, at least substantially, parallel to one another. The gear holder 8, designed as the second component K2, is double-walled in the region of the receiving pockets 15 designed as second connecting elements V2, so that the tabs 18 can be arranged between the respective outer wall and inner wall of the gear holder 8, as in Fig. 3, or are arranged as shown in the Fig. 4 to 9. As a result, the gear housing 6 and the gear holder 8 are laterally fixed to one another, for example without play or with a predetermined, in particular slight, play, and in particular, a lateral disengagement of the connecting elements V1, V2, for example in the event of a lateral force, is prevented.

[0040] The gear housing 6 advantageously comprises the aforementioned gear cover 7. Advantageously, in the interconnected state of the gear housing 6 and the gear holder 8 and an alignment of the gear housing 6 to the gear holder 8 deviating from the assembly alignment, an outer side of the gear cover 7 rests against the gear holder 8, as shown in Fig. 9, and slides along the gear holder 8 during pivoting movements of the gear housing 6 relative to the gear holder 8. In the example shown, this is realized by a rounded edge region of the inner wall of the gear holder 8, which is double-walled in the area of ​​the receiving pockets 15, wherein the gear cover 7 slides along these rounded edge regions of the two inner walls during pivoting movements of the gear housing 6 relative to the gear holder 8 about the rotation axis A and is thus held by these inner walls.

[0041] As a result, no fixed connection between the gearbox housing 6 and the gearbox cover 7 is required in the direction of a spindle axis of the threaded spindle 4, in particular in the direction of the receiving pockets 15 and thus the inner walls of the gearbox holder 8, i.e. in particular away from the gearbox housing 6, because the gearbox cover 7 is supported directly on the gearbox holder 8 and is held in its position in the gearbox housing 6 by the latter. It is therefore, for example, only pressed into the gearbox housing 6, but not firmly connected to it. In particular, operating loads and loads which occur during vehicle collisions are thereby diverted from the threaded spindle 4 via the worm gear of the gearbox 5 enclosing the gearbox housing 6 and the gearbox cover 7 directly into the gearbox holder 8, without loading the gearbox housing 6, because the gearbox cover 7 is not firmly connected to the gearbox housing 6.If such loads occur, the gear cover 7 tends to move out of the gear housing 6, i.e., it would be moved out of the gear housing 6 by these loads. However, since it rests against and is supported by the gear holder 8, this is prevented by the gear holder 8. In this way, the loads are transferred from the gear cover 7 not into the gear housing 6, but directly into the gear holder 8.

[0042] Since these loads do not act on the gearbox housing 6, they also do not act on the first and second connecting elements V1, V2 via the gearbox housing 6. This means that the force of such loads is not transmitted via these connecting elements V1, V2, in particular not via the bolts 14 and bearing openings 17 of the receiving pockets 15, but via the gearbox cover 7 directly into the gearbox holder 8, in particular via its inner walls. This relieves the load on the connecting elements V1, V2 in particular, since they are not integrated into the described load path. As a result, they exhibit less wear and can be smaller. For example, they can be made of plastic, since they only have to bear the load of the spindle drive 9, but not the loads of the moving component, in particular the vehicle seat, and any additional loads acting on it, for example in the event of a collision.

[0043] The gear arrangement 2 advantageously comprises not only the gear holder 8 and the gear housing 6, but the entire gear 5, ie also the gear components arranged in the gear housing 6, in particular the worm wheel and bearing disks.

[0044] The advantages achieved with the described solution consist in particular in the fact that it is possible to manufacture the gear unit 5 as a core standard unit by equipping the gear housing 6 with all the necessary gear components, in particular the worm gear and the bearing disks, and closing it by arranging the gear cover 7 on the gear housing 6, in particular by pressing it into the gear housing 6. Subsequently, a respective variant of the electric motor 3 and a respective variant of the threaded spindle 4 can be coupled to the gear unit 5 according to the respective requirements. For fastening the electric motor 3, the gear housing 6 has corresponding fastening receptacles 19, which are designed, for example, as threaded holes for fastening screws. In this way, a spindle drive 9 can be formed with this core standard unit, which is adapted to the respective requirements.

[0045] This spindle drive 9 is then connected to the gear carrier 8 by connecting the gear housing 6 to the gear carrier 8 in the manner described above. The gear carrier 8 can already be fastened to the other component, in particular to the vehicle seat, or it can only be fastened to this other component, in particular to the vehicle seat, afterwards, i.e. with the spindle drive 9 already connected. Due to the differently aligned receiving openings 13 for the fastening screws or fastening bolts, the gear carrier 8 and, via this, the spindle drive 9 can be fastened to the respective variant of the vehicle seat in a respectively required orientation, for example aligned in the y-direction or z-direction of the vehicle seat.

[0046] As an alternative to the above-described connection of the gear unit 5 to the gear carrier 8 only after the coupling of the gear unit 5 to the electric motor 3 and the threaded spindle 4, for example, a core standard pre-assembly group comprising the gear unit 5 and the gear carrier 8 can first be formed by first manufacturing the gear unit 5 as a core standard unit in the manner described above, by equipping the gear unit housing 6 with all the necessary gear components, in particular with the worm gear and the bearing disks, and by arranging the gear unit cover 7 on the gear unit housing 6, in particular by pressing it into the gear unit housing 6, and then mounting this gear unit 5 on the Fig.3 to 5 and described above. This core standard pre-assembly group is the same for all variants and can then, depending on the requirements of the respective variant, be coupled to a respective variant of the electric motor 3 and a respective variant of the threaded spindle 4 and, before or after, be fastened to the other component, in particular to the vehicle seat, by means of the gearbox carrier 8. List of reference symbols 1 spindle drive arrangement 2 Gear arrangement 3 electric motor 4 threaded spindle 5 gearboxes 6 Gearbox housing 7 Gearbox cover 8 Gearbox holder 9 Spindle drive 10 Fastening element 11 End stop sleeve 12 threads 13 Receiving opening 14 bolts 15 Recording pocket 16 Insertion opening 17 Storage opening 18 tab 19 Mounting bracket A axis of rotation K1 first component K2 second component P Swivel arrow V1 first connecting element V2 second connecting element

Claims

[1] Gear arrangement (2) for a spindle drive arrangement (1), comprising a gear housing (6) and a gear holder (8), wherein the gear holder (8) has at least two receiving openings (13) for one fastening screw or one fastening bolt for fastening to another component, and wherein these at least two receiving openings (13) are aligned at right angles and / or obliquely to one another, wherein the gear housing (6) and the gear holder (8) have corresponding connecting elements (V1, V2) for connecting the gear housing (6) to the gear holder (8), wherein the connecting elements (V1) of the gear housing (6) are each designed as a bolt (14) and the connecting elements (V2) of the gear holder (8) are each designed as a receiving pocket (15) for receiving one of the bolts (14) or vice versa, characterized by , that the receiving pockets (15) each have an insertion opening (16) and a bearing opening (17), and the bolts (14) are each designed such that, in an assembly orientation of the gear housing (6) relative to the gear holder (8), they can be inserted through the respective insertion opening (16) and into the respective bearing opening (17) and can be rotated in the bearing opening (17), and in an alignment of the gear housing (6) relative to the gear holder (8) that deviates from the assembly orientation, in particular in at least one operating orientation of the gear housing (6), passage of the respective bolt (14) through the respective insertion opening (16) is blocked. [2] Gear arrangement (2) according to claim 1, wherein the respective insertion opening (16) is slot-shaped, the respective bearing opening (17) is round and the respective bolt (14) is web-shaped, wherein the respective bolt (14) is designed such that a length of its cross section is greater than a width of its cross section, wherein the width of the cross section of the respective bolt (14) is smaller than a width of the respective insertion opening (16) and the length of the cross section of the respective bolt (14) is greater than the width of the respective insertion opening (16) and corresponds to a diameter of the respective bearing opening (17). [3] Gear arrangement (2) according to one of the preceding claims, wherein the gear housing (6) comprises a gear cover (7) with an opening for the passage of a threaded spindle (4), wherein in the interconnected state of the gear housing (6) and the gear holder (8) and an alignment of the gear housing (6) to the gear holder (8) deviating from the assembly alignment, an outer side of the gear cover (7) rests on the gear holder (8) and slides along the gear holder (8) during rotational movements of the gear housing (6) relative to the gear holder (8). [4] Gear arrangement (2) according to claim 3, wherein, in particular in at least one operating orientation of the gear housing (6) to the gear holder (8), the gear holder (8) is arranged laterally next to the gear housing (6), in particular in the axial direction of the threaded spindle (4), in particular exclusively in this axial direction of the threaded spindle (4), laterally next to the gear housing (6). [5] Gear arrangement (2) according to one of the preceding claims, wherein the connecting elements (V1) of the gear housing (6) and the connecting elements (V2) of the gear holder (8), in particular in at least one operating orientation of the gear housing (6) to the gear holder (8), are each arranged laterally next to the threaded spindle (4), in particular in the radial direction of the threaded spindle (4) laterally next to the threaded spindle (4). [6] Spindle drive arrangement (1) comprising a gear arrangement (2) according to one of the preceding claims. [7] Vehicle seat comprising a spindle drive arrangement (1) according to claim 6.

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