Gearbox for a vehicle seat adjustment mechanism

Abstract

Gearbox for a vehicle seat adjustment mechanism comprising: a first section comprising a first body, wherein the first body defines a first longitudinal depression and a first peripheral depression in fluid communication with the first longitudinal depression, and comprises a first curved surface, wherein the first curved surface is concave; and a second section comprising a second body, wherein the second body defines a second longitudinal depression and a second peripheral depression in fluid communication with the second longitudinal depression, and comprises a second curved surface, wherein the second curved surface is convex and has an equal and opposite curvature compared to the first curved surface.wherein the first longitudinal depression and the first peripheral depression are formed in the first curved surface and wherein the second longitudinal depression and the second peripheral depression are formed in the second curved surface, wherein in a composite configuration: the first curved surface is in contact with the second curved surface, wherein the first and second curved surfaces are curved in three dimensions to allow the first and second bodies to self-center in at least two orthogonal directions, the first longitudinal depression communicates with the second longitudinal depression to define a longitudinal passage, and the first peripheral depression communicates with the second peripheral depression to define a peripheral recess.

Description

CROSS-REFERENCE TO RELATED REGISTRATIONS

[0001] The present application claims priority from US provisional application No. 63 / 019054, which was filed on May 1, 2020. The entire disclosure of the above application is incorporated herein by reference. AREA

[0002] The present disclosure relates generally to gear drive housing arrangements for vehicle seat adjustments and specifically to bi-directional, self-centering housings for vertical gear drives (e.g., enveloping or spiral types) for use in longitudinal position adjustments of a vehicle seat. BACKGROUND

[0003] This section provides background information relating to the present disclosure and is not necessarily prior art.

[0004] Vehicles such as automobiles are generally equipped with seat adjustment mechanisms that can adjust the height, tilt, and / or longitudinal position of a driver's and / or passenger's seat to accommodate occupants of different sizes and provide a comfortable seating position that suits their preferences. Such seat adjustments can be operated manually or electrically.

[0005] Electrically operated seat adjustments are powered by electric motors, the size of which is directly related to the torque they must provide to produce the required movement. Therefore, if a reasonably high reduction ratio can be achieved in a very small space, smaller and faster electric motors can be used that provide the same level of mechanical power required for the function. However, higher-speed electric motors suitable for delivering a specific level of torque, as used in certain applications, require a limited reduction ratio in a very compact space.

[0006] Electrically driven seat adjusters offer several advantages over manual adjusters. User comfort can be increased. Electrically driven adjusters also provide an electrical interface that moves towards automation, for example, under the control of a vehicle's control unit, which automatically controls the motor to move the seat to the desired position. Despite the advantages offered by electrically driven adjusters, the size of the motors is a problem for many seats.

[0007] Typically, an electrically operated seat length adjustment is driven by an occupant-controlled switch and comprises a bidirectional electric motor mounted centrally or intermediately between pairs of vehicle seats in rail arrangements. This motor rotates two drive shafts extending outward from the motor to two gearbox blocks mounted within each upper or inner rail arrangement. Each gearbox block includes a worm-worm or worm-spiral gear assembly, in which the drive element is driven by the drive shafts and is integral with a threaded spindle bushing.

[0008] Each spindle drive assembly comprises the aforementioned rotatable spindle bushing, which receives a leadscrew threaded into it. This leadscrew extends longitudinally along the lower or outer rail assembly and is fixed to it. Through these two drives, the rotational motion of the electric motor is offset perpendicularly along the leadscrew axes to move the upper rails linearly forward and backward relative to the lower rails. The vehicle seat is mounted to a frame supported by the pair of seat rails on the movable upper rails, which are arranged parallel to each other, while the pair of lower rails is attached to the vehicle chassis. Typically, two drive shafts, gearboxes, leadscrews, and drive bushings are used in an electric length-adjustment drive, one set for each seat rail assembly, driven by a single bidirectional electric motor. SUMMARY

[0009] This section provides a general summary of the revelation and is not a comprehensive revelation of the full scope and all of its features.

[0010] A gearbox for a vehicle seat adjustment mechanism according to the principles of the present disclosure is provided. The gearbox comprises a first section and a second section. The first section comprises a first body. The first body defines a first longitudinal recess and a first peripheral recess in flow communication with the first longitudinal recess. The first body comprises a first curved surface. The first curved surface is concave. The second section comprises a second body. The second body defines a second longitudinal recess and a second peripheral recess in flow communication with the second longitudinal recess. The second body comprises a second curved surface. The second curved surface is convex. The second curved surface has an equal and opposite curvature compared to the first curved surface.In a composite configuration, the first curved surface is in contact with the second curved surface. In the composite configuration, the first longitudinal depression communicates with the second longitudinal depression to define a longitudinal passage. In the composite configuration, the first peripheral depression communicates with the second peripheral depression to define a peripheral recess.

[0011] In one implementation, the first curved surface and the second curved surface define (i) a section of an ellipsoidal surface, (ii) a section of a conical surface, or (iii) a section of a spherical surface.

[0012] In one implementation, the first curved surface and the second curved surface both define a segment of an ellipsoidal surface. The ellipsoidal surface has a first radius in the range of 190 mm to 200 mm and a second radius in the range of 240 mm to 250 mm.

[0013] In one implementation, the first curved surface and the second curved surface both define a section of a conical surface. The conical surface defines an average opening angle in a range of 165° to 172°.

[0014] In one implementation, the first curved surface and the second curved surface both define a section of a spherical surface. The spherical surface has a radius in the range of 190 mm to 200 mm.

[0015] In one implementation, one of the first and second sections comprises a frustoconical projection extending from a corresponding point on the first curved surface and the second curved surface. The other of the first and second sections comprises a frustoconical receptacle defined by a corresponding point on the first curved surface and the second curved surface. In the composite configuration, the frustoconical receptacle receives the frustoconical projection.

[0016] In one implementation, one of the first and second sections further includes an annular projection extending from the corresponding one of the first curved surface and the second curved surface. The annular projection is arranged around a base of the frustoconical projection. The annular projection is coaxial with the frustoconical projection. The other of the first and second sections further includes an annular recess defined by a corresponding one of the first curved surface and the second curved surface. The annular recess is coaxial with the frustoconical recess. In the compound configuration, the annular recess receives the annular projection.

[0017] In one implementation, the frustoconical projection comprises a first frustoconical projection and a second frustoconical projection. The frustoconical recess comprises a first frustoconical recess and a second frustoconical recess. The annular projection comprises a first annular projection and a second annular projection. The annular depression comprises a first annular depression and a second annular depression.

[0018] In one implementation, the gearbox further includes an elastic layer. The elastic layer is arranged on at least one of the first curved surfaces or the second curved surface.

[0019] In one implementation, one of the first and second sections comprises an integrated rivet. The integrated rivet extends from a corresponding point on the first curved surface and the second curved surface. The other of the first and second sections comprises an opening defined in a corresponding point on the first curved surface and the second curved surface, the opening being adapted to receive a section of the integrated rivet.

[0020] In one implementation, the gearbox further includes a variety of fasteners. These fasteners are designed to couple the first and second sections together.

[0021] In one implementation, the gearbox is adapted to accommodate at least part of a cross-axis gear system and a lead screw. The cross-axis gear system comprises a first gear that is in operational communication with a second gear. The second gear is in operational communication with the lead screw.

[0022] In one implementation, the gearbox is a universal gearbox. The gearbox system is adapted to operate at one of: (i) a comfort speed, which has a linear adaptation rate in the range of 17 mm / s to 22 mm / s, (ii) a high speed, which has a linear adaptation rate in the range of 50 mm / s to 55 mm / s, or (iii) an ultra-high speed, which has a linear adaptation rate in the range of 80 mm / s to 85 mm / s.

[0023] In one implementation, the first gear is a cylindrical worm gear and the second gear is either a spiral gear or a simple enveloping worm gear.

[0024] A vehicle seat adjustment arrangement according to the principles of the present disclosure is provided. The vehicle seat adjustment arrangement comprises a gearbox, a transmission system, and a spindle screw. The gearbox arrangement comprises a first section and a second section. The first section comprises a first body. The first body defines a first longitudinal recess and a first peripheral recess in flow communication with the first longitudinal recess. The first body comprises a first curved surface. The first curved surface is concave. The second section comprises a second body. The second body defines a second longitudinal recess and a second peripheral recess. The second body comprises a second curved surface. The second longitudinal recess acts together with the first longitudinal recess to define a longitudinal passage.The second peripheral recess interacts with the first peripheral recess to define a peripheral receptacle. The second curved surface is convex, has an equal and opposite curvature to the first curved surface, and is in contact with the first curved surface. The gear system comprises a first gear and a second gear. The first gear is located at least partially within the peripheral receptacle. The first gear includes a first external thread. The first gear is adapted to rotate about a first axis. The second gear is located at least partially within the first longitudinal passage. The second gear includes external teeth and an internal thread. The second gear defines a gear passage. The external teeth are in operative communication with the first external thread. The second gear is adapted to rotate about a second axis perpendicular to the first axis.The spindle screw extends through the gear passage. The spindle screw includes a second external thread. This second external thread is in operative communication with the internal thread.

[0025] In one implementation, the first curved surface and the second curved surface both define (i) a section of an ellipsoidal surface, (ii) a section of a conical surface, or (iii) a section of a spherical surface.

[0026] In one implementation, the second gear is either (i) a screw gear or (ii) a simple enveloping worm gear.

[0027] In one implementation, the second external thread is a trapezoidal thread and the spindle screw has a 3 mm pitch, a 1.5 mm pitch height and one of (i) a nominal diameter of 8 mm and (ii) a nominal diameter of 9 mm.

[0028] In one implementation, the transmission system is adapted to operate at one of (i) a comfort speed, which has a linear adaptation rate in the range of 17 mm / s to 22 mm / s, (ii) a high speed, which has a linear adaptation rate in the range of 50 mm / s to 55 mm / s, or (iii) an ultra-high speed, which has a linear adaptation rate in the range of 80 mm / s to 85 mm / s.

[0029] In one implementation, one of the first and second sections comprises a frustoconical projection and an annular projection extending from corresponding points on the first and second curved surfaces. The annular projection is arranged around a base of the frustoconical projection and is coaxial with the projection. The other of the first and second sections comprises a frustoconical receptacle and an annular trough defined by corresponding points on the first and second curved surfaces. The annular trough is coaxial with the frustoconical receptacle. The frustoconical receptacle is adapted to receive the frustoconical projection, and the annular trough is adapted to receive the annular projection.

[0030] Further areas of application will be understood through the description provided herein. The description and specific examples in this summary are for illustrative purposes only and are not intended to limit the scope of the present disclosure. List of characters

[0031] The drawings described herein are for illustrative purposes only of selected embodiments and not of all possible implementations, and are not intended to limit the scope of this description. Fig. Figure 1 is a partial perspective view of a vehicle seating arrangement having a pair of seat rail arrangements, each seat rail arrangement having an electric seat length adjustment arrangement according to the principles of the present disclosure; Fig. Figure 2 is a perspective view of the electric seat length adjustment arrangement of Fig. 1; Fig. Figure 3 is a perspective exploded view of an adjustment sub-assembly of the electric seat length adjustment assembly of Fig. 2; Fig. 4A-4E refer to a gearbox of a closed type having ellipsoidal mating surfaces according to the principles of the present disclosure; Fig. 4A is a perspective view of a gearbox and a corresponding ellipsoid; Fig. 4B is a perspective view of a gearbox; Fig. 4C is a first side view of the gearbox; Fig. 4D is a second side view of the gearbox; and Fig. 4E is a perspective exploded view of the gearbox; Fig. 5A-5B refer to an open-type gearbox having ellipsoidal mating surfaces according to the principles of the present disclosure; Fig. 5A is a perspective view of the gearbox; and Fig. 5B is a perspective exploded view of the gearbox; Fig. References 6A-6D relate to an open-type gearbox having conical mating surfaces in accordance with the principles of the present disclosure; Fig. Figure 6A is a perspective view of the gearbox and a corresponding cone; Fig. 6B is a first side view of the gearbox; Fig. 6C is a second side view of the gearbox; and Fig. 6D is a perspective exploded view of the gearbox; Fig. References 7A-7E relate to an open-type gearbox having spherical mating surfaces in accordance with the principles of the present disclosure; Fig. 7A is a perspective view of the gearbox and a corresponding sphere; Fig. 7B is a perspective view of the gearbox; Fig. 7C is a first side view of the gearbox; Fig. 7D is a second side view of the gearbox; and Fig. 7E is a perspective exploded view of the gearbox; Fig. 8A-8B refer to pre-assembly limitation features; Fig. 8A is a perspective detail view of a recess of a pre-assembly limiting feature of the gearbox. Fig. 5B; and Fig. 8B is a perspective detail view of a projection of a pre-assembly limiting feature of Fig. 5B; Fig. Figure 9 is a perspective exploded view of a gearbox comprising a single limiting feature in accordance with the principles of the present disclosure; Fig. Figure 10 is a perspective exploded view of a gearbox which has no pre-assembly limiting features, according to the principles of the present disclosure; Fig. 11A-11B refer to a gearbox comprising an elastic layer according to the principles of the present disclosure; Fig. Figure 11A is a perspective exploded view of the gearbox; and Fig. Figure 11B is a perspective view of the gearbox; Fig. 12A-12C refer to a gearbox assembly comprising the gearbox of the Fig. 5A-5B assembled with screws according to the principles of the present disclosure; Fig. Figure 12A is a perspective view of the gearbox assembly; and Fig. 12B is a partial sectional view taken along line 12B-12B from Fig. 12A; Fig. 12C is a sectional view taken along line 12C-12C from Fig. 12A; Fig. 13A-13D refer to a gearbox assembly comprising the gearbox of the Fig. 5A-5B with separate rivets according to the principles of the present disclosure; Fig. 13A is a perspective exploded view of the gearbox assembly with the rivets in an undeformed state; Fig. Figure 13B is a perspective view of the gearbox assembly with the rivets in the undeformed state; Fig. 13C is a sectional view of the gearbox assembly taken along line 13C-13C from Fig. 13B, wherein the rivets are in the undeformed state; and Fig. 13D is a sectional view of the gearbox assembly taken along the 13D-13D line. Fig. 13B, where the rivets are in a deformed state; Fig. 14A-14D refer to a gearbox assembly comprising integrated rivets according to the principles of the present disclosure; Fig. 14A is a perspective exploded view of the gearbox with the rivets in an undeformed state; Fig. Figure 14B is a perspective view of the gearbox with the rivets in the undeformed state; Fig. 14C is a sectional view taken along line 14C-14C from Fig. 14B, wherein the rivets are in an undeformed state; and Fig. 14D is a sectional view taken along the 14D-14D line from Fig. 14B, where the rivets are in a deformed state; Fig. 15A-15D refer to an electric length adjustment arrangement with increased strength, enclosed gearing and comfort speed according to the principles of the present disclosure; Fig. 15A is a partially perspective view of the adjustment arrangement; Fig. 15B is a partially perspective sectional view of the adjustment arrangement; Fig. 15C is a sectional view of the adjustment arrangement taken along line 15C-15C from Fig. 15A; and Fig. 15D is a sectional view of the adjustment arrangement taken along line 15D-15D from Fig. 15A; Fig. 16A-16E refer to an electric length adjustment arrangement with increased strength, spiral gears and comfort speed according to the principles of the present disclosure; Fig. Figure 16A is a partially perspective exploded view of the adjustment arrangement; Fig. 16B is a partially perspective view of the adjustment arrangement; Fig. 16C is a partially perspective sectional view of the adjustment arrangement; Fig. 16D is a sectional view of the adjustment arrangement taken along line 16D-16D from Fig. 16B; and Fig. 16E is a sectional view of the adjustment arrangement taken along line 16E-16E of Fig. 16B; Fig. 17A-17D refer to a normal strength, enclosed gear, and high-speed electrical length-adjustment arrangement according to the principles of the present disclosure; Fig. 17A is a partially perspective view of the adjustment arrangement; Fig. 17B is a partially perspective sectional view of the adjustment arrangement; Fig. 17C is a sectional view of the adjustment arrangement taken along line 17C-17C from Fig. 17A; and Fig. 17D is a sectional view of the adjustment arrangement taken along line 17D-17D from Fig. 17A; Fig. References 18A-18D relate to a normal-strength, spiral gear, and high-speed electrical length-adjustment arrangement according to the principles of the present disclosure; Fig. 18A is a partially perspective view of the adjustment arrangement; Fig. 18B is a partially perspective sectional view of the adjustment arrangement; Fig. 18C is a sectional view taken along line 18C-18C from Fig. 18A; and Fig. 18D is a sectional view taken along the line 18D-18D from Fig. 18A; and Fig. 19A-19D refer to an electric length adjustment with normal strength, spiral gearing and ultra-high speed according to the principles of the present disclosure; Fig. 19A is a partially perspective view of the adjustment arrangement; Fig. 19B is a partially perspective sectional view of the adjustment arrangement; Fig. 19C is a sectional view taken along line 19C-19C from Fig. 19A; and Fig. 19D is a sectional view taken along line 19D-19D from Fig. 19A.

[0032] Corresponding reference symbols indicate corresponding parts through the different views of the drawings. DETAILED DESCRIPTION

[0033] Exemplary embodiments are described in more detail below with reference to the attached drawings.

[0034] Exemplary embodiments are provided so that this disclosure is complete and conveys its full scope to a person skilled in the art. Numerous specific details are elaborated, such as specific components, devices, and methods, to provide a complete understanding of the embodiments of this disclosure. A person skilled in the art will understand that specific details need not be implemented, that exemplary embodiments can be embodied in many different forms, and that none of this is intended to limit the scope of the disclosure. In some exemplary embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.

[0035] The terminology used herein serves only to describe certain exemplary embodiments and is not intended to be limiting. As used herein, the singular forms of "a" and "the" may also include the plural forms unless the context clearly indicates otherwise. The terms "has," "exhibiting," "comprising," and "possessing" are inclusive and therefore specify the presence of the named features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.The procedural steps, processes, and operations described herein are not to be interpreted as necessarily having to be carried out in the discussed or illustrated order, unless they are expressly designated as such. It should also be understood that additional or alternative steps may be employed.

[0036] When an element or layer is described as "on," "interacting with," "connected with," or "coupled to" another element or layer, it may be directly on, in interaction with, connected to, or coupled to the other element or layer, or an intermediate element or layer may be present. In contrast, when an element is described as "directly on," "directly interacting with," "directly connected with," or "directly coupled to" another element or layer, no intermediate elements or layers may be present. Other terms used to describe relationships between elements should be interpreted similarly (e.g., "between" and "directly between," "adjacent" and "directly adjacent," etc.). As used herein, the term "and / or" is intended to encompass any and all combinations of one or more of the appropriately listed terms.

[0037] Although the terms first, second, third, etc., are used herein to describe different elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections are not intended to be limited by these terms. These terms may be used merely to distinguish one element, component, region, layer, or section from another. Terms such as "first," "second," and other numerical terms are not intended to imply any sequence or order when used herein, unless clearly indicated by the context. Therefore, a first element, component, region, layer, or section discussed below may also be referred to as a second element, component, layer, or section without departing from the teaching of the exemplary embodiments.

[0038] Spatially relative terms such as "inside," "outside," "below," "underneath," "lower," "above," "above," and the like may be used herein for descriptive purposes to describe the relationship of one element or feature to another, as shown in the figures. Spatially relative terms may encompass various orientations of the device used, in addition to the orientation shown in the figures. For example, if a device is reversed in the figures, elements arranged as "underneath" or "below" other elements or features would then be arranged "above" the other elements or features. Therefore, the exemplary term "underneath" can encompass both an orientation above and below.The device may be oriented in a different way (rotated by 90 degrees or other orientations) and the spatially relative terms used herein are interpreted accordingly.

[0039] With reference to Fig. 1 is a seating arrangement 10 The seating arrangement was provided. 10 can a backrest 12 , a seat base 14 and one or more seat rail arrangements 16 include. In some implementations, the seating arrangement 10 Adaptably mounted on a vehicle (not shown), for example, a car. For example, a seat backrest mechanism (not shown) can adjust the backrest. 12 tiltable relative to the seat base 14 move and adjust the seat rail arrangements 16 can the seat base 14The backrest can be moved into a specific position relative to a vehicle floor pan (not shown). Accordingly, a user can adjust the orientation of the backrest. 12 relative to the seat base 14 Change the position of the seat arrangement using the seat back mechanism (not shown). 10 relative to the vehicle floor pan using the pair of seat rail arrangements 16 .

[0040] Each seat rail arrangement 16 may include a lower rail 20 , an upper rail 22 , and an adjustment arrangement 24 The adjustment arrangement 24 can be fixedly attached to a section of the upper rail 22 by one or more mechanical fasteners 26 (e.g., bolts, screws, rivets, etc.). In certain implementations of the upper rail 22define one or more cutouts (not shown) around the adjustment arrangement 24 to accommodate.

[0041] The lower rail 20 It can be permanently attached to a section of the vehicle using one or more mechanical fasteners. 28 (e.g. bolts, screws, rivets, etc.) or another suitable fastening technique and can form a first axis A1 Define. The lower rail 20 can define a U-shaped profile that is essentially parallel to the axis in one direction A1 extends so that the walls of the lower rail 20 work together to create a central lower channel 30 to define.

[0042] The upper rail 22 can be fixed to a section of the seat base 14 using one or more fasteners 32(e.g., bolts, screws, rivets, etc.) or another fastening technique. The upper rail 22 can define a U-shaped profile that is essentially parallel to the axis in one direction A1 extends so that the walls of the upper rail 22 work together to create a central upper channel 34 to define.

[0043] In a composite configuration, as shown, the lower rail can 20 the upper rail 22 for movement along the axis A1 support so that the upper rail 22 offset relative to the vehicle. For example, the lower rail can be 20 the upper rail 22 Sliding support for translation along the axis A1 The upper rail 22 can move relative to the lower rail 20 reposition to selectively move the backrest 12 and the lower part of the seat 14to enable movement of the upper rail relative to the vehicle. 22 relative to the lower rail 20 can be facilitated by a sled arrangement 50 , the two pairs of ball track arrangements 52 includes, which may be: (i) secured to the upper rail 22 and / or the adjustment arrangement 24 , and (ii) at least partially received within the central lower channel 30 the lower rail 20 .

[0044] With reference to Fig. 2. The adjustment arrangement can be 24 include a drive arrangement 54 , a lead screw or spindle 56 and an adjustment sub-arrangement 58 In a composite configuration, a section of the adaptation arrangement can 24 be secured relative to the lower rail 22 , to move the backrest 12 and the lower part of the seat 14to lighten the vehicle relative to the vehicle. For example, the spindle screw 56 be secured to the lower rail 20 and / or the vehicle floor, while the adjustment sub-arrangement 58 It can be secured to the upper rail. 22 Accordingly, movement of the adjustment sub-arrangement causes 58 relative to the spindle screw 56 the forward and backward movement of the upper rail 22 and the lower part of the seat 14 relative to the lower rail 20 and ultimately the vehicle floor.

[0045] The drive arrangement 54 It can include an electric bidirectional motor and two drive shafts that transmit speed and torque from the electric motor to the adapting sub-assembly. 58 transferred to move the adjustment sub-arrangement 58along the spindle screw 56 length and thereby the forward and backward movement of the seat arrangement 10 ( Fig. 1) relative to the vehicle floor.

[0046] The spindle screw 56 can a front end 62 and a rear end 64 include. In some implementations, the spindle screw 56 define an essentially cylindrical rod that has an axis A2 defined, extending from the front end 62 to the rear end 64 extends and has an external thread 66 possesses, which extends along and around the axis A2 from the front end 62 to the rear end 64 extends. In a compound configuration, the spindle screw 56 be arranged within one or both of the central lower channel 30 the lower rail 20 and the central upper canal 34the upper rail 22 , so that the axis A2 essentially parallel to the axis A1 is ( Fig. 1) The front end 62 and the rear end 64 can be secured relative to the lower rail 20 and / or the vehicle floor through the pins that are firmly mounted on the lower rail 20 For example, the front end 62 supported by a front spindle mount 68 , which is secured to the lower rail 20 and / or the vehicle floor, and the rear end 64 can be supported by a rear spindle mount 70 , which is also secured to the lower rail 20 and / or the vehicle floor.

[0047] With reference to at least Fig. 3 can the adjustment sub-arrangement 58 a support framework 74 , a housing arrangement 76, a pair of bearing bushings 78 , a first gear or cylindrical worm 80 , which have a spiral external thread 82 in intervention with outer teeth 84 a second gear or enclosing worm 86 possesses a spindle bushing that is integrated with the second gear 86 and an internal thread 90 possesses, and the spindle screw 56 with an external thread 66 ( Fig. 2) in engagement with the internal thread 90 the spindle bushing. The first and second gears 80 , 86 They can be collectively referred to as a transmission system or transmission arrangement.

[0048] The support framework 74 can define a U-shape. The support frame 74 can a base 100 , a pair of walls 102 , which are essentially perpendicular to the base 100at opposite ends of the base 100 extend, and a pair of flanges 104 , which are essentially perpendicular to the pair of walls 102 and essentially parallel to the base 100 are, possess. The basis 100 , walls 102 and flanges 104 can be integrated. The basis 100 and walls 102 can work together to protect an inner region 106 define the pair of walls 102 can a corresponding pair of wall openings 108 to define. The pair of flanges 104 a suitable pair of flange openings 110 define.

[0049] The housing arrangement 76 can a gearbox 114 , a first cover 116 and a second cover 118 (also referred to as "pair of cover sleeves") 116, 118”). The first and second cover sleeves 116 , 118 can be geometrically mirrored. The first and second cover shells 116 , 118 can corresponding first and second casing openings 120 , 122 Define. The first and second cover sleeves. 116 , 118 corresponding first and second inner envelope regions 124 , 126 define.

[0050] The first and second cover sleeves 116 , 118 They can be made of a durable material that possesses noise and vibration damping properties. In some implementations, the first and second cover shells can be 116 , 118 They must be made of a polymer, such as rubber. The use of rubber protective covers. 116 , 118 , against the walls 102 the support framework 74When pressed, the damping capacity of the adjustment sub-arrangement can be affected. 58 increase vibration transmission of the seat structure.

[0051] The gearbox 114 It can be made from an aluminum-zinc alloy injection-molded material. The gearbox. 114 can be a first part or section 130 and a second part or section 132 include each of the first and second sections. 130 , 132 can a longitudinal deepening 134 , a peripheral depression 136 and an opening 138 Define. Each of the first and second sections 130 , 132 further includes a curved fitting surface 140 In a composite state, the curved mating surfaces 140 the first and second sections 130 , 132 in contact with each other, the longitudinal depressions 134They work together to form a longitudinal passage, and the peripheral depressions 136 They work together to define a peripheral input. The gearbox 114 can be secured in the composite configuration by a large number of fasteners. 142 (e.g., screws, bolts, rivets, etc.). Various gearbox implementations are described in more detail below.

[0052] The cylindrical snail 80 can a rotation axis A3 define those that extend from a first end 150 to a second end 152 extends. The spiral outer thread 82 can be arranged around the axis of rotation A3 between the first and second ends 150 , 152 In various implementations, the cylindrical screw can 80 are made from a plastic material, such as PEEK 450G, through an injection molding process. The cylindrical screw 80 The housing arrangement can support rotation by providing support for the rotational movement. 76 For example, the first end 150 the cylindrical snail 80 be rotatably arranged within the opening 138 of the first section 130 of the gearbox 114 and the second end 152 the cylindrical snail 80 can be rotatably arranged within the opening 138 of the second section 132 of the gearbox 114 .

[0053] The enveloping snail 86 can a rotation axis A4 define those that extend from a first end 154 to a second end 156 extends. The internal thread 90 and the outer teeth 84 can be arranged around the axis of rotation A4 The bearing bushings 78 can corresponding drillings 160include the outer storage surfaces 162 the enveloping snail 86 received. In the compound configuration, the enveloping snail can 86 and the bearing bushings 78 be arranged at least partially within the longitudinal passage (formed by longitudinal depressions) 134 ) of the gearbox 114 The enveloping snail 86 can be arranged between the bearing bushings 78 and rotatable with respect to the bearing bushings 78 The bearing bushings 78 can be rotatably fixed with respect to the gearbox 114 by intervention of radially extending flaps 164 the bearing bushings 78 with the gearbox 114 .

[0054] In the assembled configuration, the gearbox 114 arranged between the cover sleeves 116 , 118and at least partially within the inner regions of the envelope 124 , 126 The housing arrangement 76 , which the gearbox 114 and the cover sleeves 116 , 118 encompasses, is arranged at least partially within the inner region 106 of the mounting frame 74 The spindle screw 56 ( Fig. 2) extends through a gearbox passage 166 the enveloping snail 86 , the perforations 160 the bearing bushings 78 , the longitudinal passage (formed by the longitudinal depressions) 134 ), the first and second shell openings 120 , 122 and the wall openings 108 The internal thread 90 the enveloping snail 86 is threaded into the outer thread 66 ( Fig. 2) the spindle screw 56 ( Fig. 2) and the outer teeth 84the enveloping snail 86 are engaged with the spiral outer thread 82 the cylindrical snail 80 .

[0055] The axis of rotation A4 the enveloping snail 86 can essentially run parallel to and along the axis A2 the spindle screw 56 extend. The axis of rotation A3 the cylindrical snail 80 can be essentially perpendicular to the axes A2 and A4 be. In the composite configuration, the adaptation arrangement can 58 be arranged within the central lower channel 30 the lower rail 20 and / or the central upper canal 34 the upper rail 22 The axes A2 , A4 can be essentially parallel to and aligned along the axis A1 be. gearboxes

[0056] A gearbox according to the principles of this disclosure may have one or more features that facilitate the alignment of the two sections of the gearbox, distribute loads, increase arrangement capability, improve arrangement accuracy, accommodate manufacturing tolerances, reduce or eliminate vibrations and / or noise during use, and / or provide modularity to accommodate a variety of gearbox arrangement configurations, as will be described in more detail below. More specifically, a gearbox according to the principles of this disclosure may include curved mating surfaces, one or more boundary features, and / or elastic layers, all of which will be described in more detail below.

[0057] Additionally, each gearbox can be either an open-type or a closed-type gearbox. Closed-type gearboxes may include a wall, such as a top wall, that at least partially encloses the worm gear. Closed-type gearboxes can be used to reduce or eliminate contamination of the gearbox system within the gearbox and / or to eliminate noise during operation. In some implementations, a closed-type gearbox can be used to enable noise reduction in an ultra-high-speed gearbox system operating at higher engagement frequencies compared to lower-speed gearbox systems. An example of a closed-type gearbox is shown in the Fig. 4A-4E shown. Open-type gearboxes can be used in applications with little or no expected contamination and / or low expected noise. In some implementations, an open-type gearbox can be used with a comfort-speed or high-speed transmission system that is not expected to emit significant noise during use. Examples of open-type gearboxes are shown in the Fig. 5A-7E, Fig. 9-11B and Fig. 15A-19D.

[0058] The first and second sections of the gearbox can be manufactured using an injection molding process. The gearbox itself can be made of cast metal, such as an aluminum-zinc alloy. The gearboxes can be assembled using various types of separate or integrated fasteners. Curved mating surfaces

[0059] A two-part gearbox according to the principles of the present disclosure can include curved mating surfaces. The curved mating surfaces can be defined by a segment of a three-dimensional curve, such as an ellipsoid, a cone, or a sphere. The two-part gearbox comprises a first section with a first curved mating surface and a second section with a second curved mating surface. One of the mating surfaces is convex, while the other mating surface is concave. The mating surfaces can essentially define the same shape with equal and opposite curvature.

[0060] The mating surfaces can be self-centering in at least two orthogonal directions. In certain implementations, the mating surfaces are self-centering in three orthogonal directions (e.g., spherical mating surfaces). Accordingly, the curved mating surfaces can enable efficient arrangement and pre-assembly with increased accuracy. Furthermore, gearboxes with self-centering mating surfaces can be manufactured without any other specific alignment features. In addition to facilitating alignment, the curved mating surfaces thus increase surface contact between the two gearbox sections, thereby improving the distribution of shear stress in the gearbox assembly under normal or shock loading conditions.

[0061] With reference to the Fig. 4A-4E is a gearbox 400 provided in accordance with the principles of the present disclosure. The gearbox 400 includes a first part or section402 and a second part or section 404 A boundary or joint 406 between the first and second sections 402 , 404 defines a section of an ellipsoid 408 The ellipsoid 408 It can have a first or vertical radius and a second or horizontal radius. In certain implementations, the first radius can be in the range of 190 mm to 200 mm, and the second radius can be in the range of 240 mm to 250 mm.

[0062] The first section 402 includes a first body 410 The first body 410 includes a first outer surface 412 and a first mating surface or curved surface 414 The first fitting surface 414 is concave, so that it curves inwards 415 curves, away from the second section 404 The second section 404 includes a second body 416The second body 416 includes a second outer surface 418 and a second mating surface or curved surface 420 The second fitting surface 420 is convex, so that it curves outwards 421 curves, contrary to the first section 402 Curvatures of the first and second mating surfaces 414 , 420 are essentially the same size and opposite in shape. More precisely, the first fitting surface is... 414 defined by a section of a radially outer region 422 of the ellipsoid 408 and the second fitting area 420 is defined by a section of a radially inner region 424 of the ellipsoid 408 .

[0063] During the pre-assembly of the gearbox 400 can the pass areas 414 , 420 be configured to have a self-centering effect on the first and second sections 402 , 404to have in order to align the first and second sections 402 , 404 to facilitate this. Before alignment during pre-assembly, the mating surfaces can be adjusted. 414 , 420 be in less than complete contact (i.e., gaps may exist between the first and second mating surfaces). 414 , 420 ). One or both of the sections 402 , 404 can be moved along a first vertical direction 426 and / or a second vertical direction 428 regarding the other of the sections 402 , 404 until the sections 402 , 404 slip into their alignment. This can be described as bidirectional self-centering. When the sections 402 , 404 are aligned, the first and second passing surfaces can 414 , 420 essentially in continuous contact at the boundary 406 be.

[0064] The first body 410 of the first section 402 defines a first longitudinal deepening 440 and a first peripheral deepening 442 The first longitudinal deepening 440 and the first peripheral depression 442 are connected in a flow. The first body 410 includes a first wall 444 The first wall 444 defines at least partially the first peripheral depression 442 The first wall 444 may be partially cylindrical.

[0065] The second body 416 of the second section 404 defines a second longitudinal depression 446 and a second peripheral depression 448 The second longitudinal depression 446 and the second peripheral depression 448 are connected in the flow. The second body 416 includes a second wall 450 The second wall 450defines at least partially the second peripheral depression 448 The second wall 450 may be partially cylindrical.

[0066] The first and second longitudinal depressions 440 , 446 work together to achieve longitudinal passage 452 to define ( Fig. 4B-4C). The longitudinal passage 452 can continuously move between the first and second sides of the gearbox 400 extend. If the gearbox 400 is arranged in a vehicle seat adjustment arrangement, the longitudinal passage 452 be aligned with the axes of a lower rail, spindle screw and second gear (e.g. lower rail) 20 , spindle screw 56 and second gear 86 the Fig. 1-3). The longitudinal passage 452can be adapted to include a second gear, a section of a spindle screw and bearing (e.g. second gear) 86 , spindle screw 56 , and bearing bushings 78 the Fig. 1-3) to receive.

[0067] The first and second peripheral depressions 442 , 448 work together to achieve peripheral uptake 454 ( Fig. 4C) to define. The peripheral recording 454 is partially enclosed by the first and second walls 444 , 450 Accordingly, the gearbox can be described as a closed-type gearbox. The peripheral intake 454 can be adapted to include a first gear (e.g., first gear) 8o out of Fig. 1-3) to receive. The first and second bodies 410 , 416 can corresponding first and second openings 460 , 462 Define. The first and second openings460 , 462 can be adapted, first and second bearing surfaces of a first gear (e.g. first gear) 80 from Fig. 1-3) to support.

[0068] The first body 410 of the first section 402 can have a variety of third openings 464 define. The second body 416 of the second section 404 can have a variety of fourth openings 466 define. If the gearbox 400 The third openings are composed of... 464 axially aligned with the corresponding fourth openings 466 The openings 444 , 466 can be adapted to receive a variety of fasteners, as described in more detail below (see discussion of the Fig. 12A-14D), to the gearbox 400 to be kept in the composite configuration.

[0069] The gearbox400 may further include a pair of pens 470 and a couple of recordings 472 In the implementation shown, the pens are 470 from the second pass area 420 of the second section 404 before and the recordings 472 are defined by the first body 410 of the first section 402 However, in other implementations, the first section may comprise the pins, while a second section comprises the receptacles. In some implementations, the first and second sections may each comprise a pin and a receptacle.

[0070] The recordings 472 They could be blind holes. The pins 470 can be frustoconical, so that their largest diameter is adjacent to the second body 416 possess. The recordings 472 can be frustoconical in shape, so that they have their largest diameter at the first mating surface 414possess. The recordings 472 The appropriate pens can be adapted. 470 during the pre-assembly of the gearbox 400 to receive. The pens 470 can be arranged in recordings 472 , if the gearbox 400 in the composite configuration.

[0071] In various implementations, the gearbox can 400 further include one or more pre-assembly limiting features. For example, the gearbox may 400 ring-shaped protrusions 480 include those that are to be received in ring-shaped depressions 482 The ring-shaped protrusions 480 can be coaxial with the pins 470 and the ring-shaped depressions 482 can be coaxial with the recordings 472A gearbox according to the principles of the present disclosure may be free of pre-assembly limiting features, comprise a single limiting feature, or comprise two limiting features (e.g., the pair of annular projections). 480 and the pair of ring-shaped depressions 482 ) as shown, or may include more than two limiting features. Pre-assembly limiting features are described in more detail below in the discussion of the Fig. 8A-10.

[0072] With reference to the Fig. 5A-5B is a different gearbox. 400a Illustrated. The structure and function of the gearbox. 400a It can be essentially similar to that of the gearbox. 400, with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "a") are used to identify features that have been modified.

[0073] The gearbox 400a includes a first part or section 402a and a second part or section 404a A boundary or joint 406a between the first and second parts 402a , 404a defines a section of an ellipsoid 408 .

[0074] The first section 402a includes a first body 410a The first body410a includes a first outer surface 412a and a first mating surface or curved surface 414a The first fitting surface 414a is concave. The second section 404a includes a second body 416a The second body 416a includes a second outer surface 418a and a second mating surface or curved surface 420a The second fitting surface 420a is convex.

[0075] The first body 410a of the first section 402a defines a first longitudinal deepening 440 and a first peripheral deepening 442a The first longitudinal deepening 440 and the first peripheral depression 442a are in flow connection with each other. The second body 416a of the second section 404a defines a second longitudinal depression 446 and a second peripheral depression 448aThe second longitudinal depression 446 and the second peripheral depression 448a are in flow connection with each other.

[0076] The first and second longitudinal depressions 440 , 446 work together to achieve longitudinal passage 452 to define ( Fig. 5A). The first and second peripheral depressions 442a , 448a work together to achieve peripheral uptake 454a to define ( Fig. 5A). The peripheral view 454a is open to an outer region 500 of the gearbox 400a at a peripheral opening 502 , which is defined by the first and second bodies 410a , 416a , if the gearbox 400a in the assembled configuration. Accordingly, the gearbox can 400a can be described as an open-type gearbox. The peripheral intake 454acan be adapted, at least partially, to a first gear (e.g., first gear) 80 the Fig. 1-3) to receive, for example in first and second openings 460 , 462 , supporting the first and second bearing surfaces of the first gear. A section of the first gear can be removed from the gearbox. 400a through the peripheral opening 502 preside.

[0077] The gearbox 400a may further include third and fourth openings 464 , 466 , for fasteners, pins 470 and recordings 472 to receive, and ring-shaped projections and depressions 480 , 482 as shown and described above in the discussion of Fig. 4A-4E.

[0078] With reference to the Fig. 6A-6D is a different gearbox. 400b Illustrated. The structure and function of the gearbox. 400bIt can be essentially similar to that of the gearbox. 400a , with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "b") are used to identify features that have been modified.

[0079] The gearbox 400b includes a first part or section 402b and a second part or section 404b A boundary or joint 406b between the first and second parts 402b , 404b define a section of a cone 600 In certain implementations, the cone 600define an opening angle in the range of 165° to 1720°.

[0080] The first section 402b includes a first body 410b The first body 410b includes a first outer surface 412b and a first mating surface or curved surface 414b The first fitting surface 414b is concave, so that it curves inwards 415 curves, away from the second section 404b The second section 404b includes a second body 416b The second body 416b includes a second outer surface 418b and a second mating surface or curved surface 420b The second fitting surface 420b is convex, so that it curves outwards 421, contrary to the first section 402b Curvatures of the first and second mating surfaces 414b , 420b are essentially the same size and opposite in direction.

[0081] During the pre-assembly of the gearbox, the mating surfaces can be adjusted. 414b , 420b its self-centering effect on the first and second sections 402b , 404b to have in order to align with the first and second sections 402b , 404b to facilitate this. Before alignment during pre-assembly, the mating surfaces can be adjusted. 414b , 420b be in less than complete contact (i.e., there are gaps between the first and second contact surfaces). 414b , 420b) One or both sections 402b , 404b can be moved along a first orthogonal direction 426 and / or a second orthogonal direction 430 regarding the other of the sections 402b , 404b until the sections 402b , 404b slide into the appropriate alignment. This can be described as bidirectional self-centering. When the sections 402b ,404b are aligned, the first and second passing surfaces can 414b , 420b in essentially continuous contact at the boundary 406b be.

[0082] The first body 410b of the first section 402b defines a first longitudinal deepening 440 and a first peripheral deepening 442a The first longitudinal deepening 440 and the first peripheral depression 442a are in flow connection with each other. The second body 416b of the second section 404b defines a second longitudinal depression 446 and a second peripheral depression 448a The second longitudinal depression 446 and the second peripheral depression 448a are interconnected by the flow. The first and second longitudinal depressions 440 , 446 work together to achieve longitudinal passage 452 ( Fig. 6A-6B). While the gearbox 400a Shown as a gearbox of an open type, it can in other implementations have walls similar or identical to the walls 444 , 450 of the gearbox 400 ( Fig. 4A-4E) and be a gearbox of an enclosed type.

[0083] The gearbox 400b may further include third and fourth openings 464 , 466 , for fasteners, pins 470 and recordings 472 to receive, and ring-shaped projections and depressions 480 , 482 as shown and described above in the discussion of Fig. 4A-4E.

[0084] With reference to the Fig. 7A-7D is a different gearbox. 400c Illustrated. The structure and function of the gearbox. 400c It can be essentially similar to that of the gearbox. 400a, with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "c") are used to identify features that have been modified.

[0085] The gearbox 400c includes a first part or section 4020 and a second part or section 404c A boundary or joint 406c between the first and second parts 4020 , 404c defines a section of a sphere 700 In certain implementations, the sphere can 700 Define a radius in the range of 190 mm to 200 mm.

[0086] The first section 4020 includes a first body 4100 The first body 4100 includes a first outer surface 4120 and a first mating surface or curved surface 4140 The first fitting surface 414c is concave, so that it curves inwards 415°, away from the second section 404c The second section 404c includes a second body 416c The second body 416c includes a second outer surface 418a and a second mating surface or curved surface 420c The second fitting surface 420C is convex, so that it curves outwards 421 curves, contrary to the first section 402c Curvatures of the first and second mating surfaces 4140 , 420C are essentially the same size and opposite in direction.

[0087] During the pre-assembly of the gearbox, the mating surfaces can be adjusted. 414c , 420cits self-centering effect on the first and second sections 4020 , 404c to have in order to align with the first and second sections 402c , 404c to facilitate this. Before alignment during pre-assembly, the mating surfaces can be adjusted. 414c , 420C be in less than complete contact (i.e., there are gaps between the first and second contact surfaces). 414c , 420c One or both sections 4020 , 404c can be moved along a first orthogonal direction 426 , a second orthogonal direction 430 and / or a third orthogonal direction 702 regarding the other of the sections 402c , 404c until the sections 4020 , 404c slide into the appropriate alignment. This can be described as tridirectional self-centering. When the sections 4020 , 404care aligned, the first and second passing surfaces can 414c , 420C in essentially continuous contact at the boundary 406c be.

[0088] The first body 410c of the first section 402c defines a first longitudinal deepening 440 and a first peripheral deepening 442a The first longitudinal deepening 440 and the first peripheral depression 442a are in flow connection with each other. The second body 416c of the second section 404c defines a second longitudinal depression 446 and a second peripheral depression 448a The second longitudinal depression 446 and the second peripheral depression 448a are interconnected by the flow. The first and second longitudinal depressions 440 , 446 work together to achieve longitudinal passage 452 ( Fig. 7B-7C). The first and second peripheral depressions 442a , 448a work together to achieve peripheral uptake 454a to define ( Fig. 7B). While the gearbox 400c The gearbox shown is of an open type; the gearbox can 400c In other implementations, walls are similar or identical to the walls 444 , 446 of the gearbox 400 ( Fig. 4A-4E) and be a gearbox of an enclosed type.

[0089] The gearbox 400c may further include third and fourth openings 464 , 466 , for fasteners, pins 470 and recordings 472 to receive, and ring-shaped projections and depressions 480 , 482 as shown and described above in the discussion of Fig. 4A-4E. Pre-assembly limiting features

[0090] Gearboxes according to the principles of this disclosure include one or more features to facilitate pre-assembly and provide flexibility to compensate for manufacturing tolerances. Gearboxes may include single pre-assembly limiting features, double pre-assembly limiting features, or more than two pre-assembly limiting features. Various implementations may be free of pre-assembly limiting features.

[0091] With reference to Fig. 8A is a section of the second body 416a of the gearbox 400a from Fig. 5A is shown. The section includes a pen. 470 and a ring-shaped protrusion 480 In various implementations, the pen 470 and the ring-shaped protrusion 480 to be integrated with the second body 420a .

[0092] The pencil 470 stands from the second passing area 420a before. The pen470 It can have a frustoconical shape, so that it has a larger diameter at a proximal end or base, closer to the second mating surface. 420a and a smaller diameter at a distal end 800 further away from the second pass surface 420a . The pencil 470 includes a first connection surface 802 , which is frustoconical in shape.

[0093] The ring-shaped protrusion 480 can have a larger radius than the pen 470 and surrounds the base of the pen extensively 470 extend. The ring-shaped projection can extend axially from the second mating surface. 420a opposite the distal end 800 of the pen 470 extend. However, the ring-shaped protrusion can 480 axially along only one section of the length of the pin 470 extend. The ring-shaped protrusion 480 includes a second connection surface804 .

[0094] With reference to Fig. 8B comprises the first body 410a the recording 472 and the ring-shaped depression 482 The recording 472 can be defined by the first fitting surface 414a The recording 472 It can have a frustoconical shape, so that it has a larger diameter at a proximal end. 806 at the first pass area 414a and a smaller diameter at a distal end 808 offset from the first mating surface 414a possesses. The recording 472 includes a third connection surface 810 , which is frustoconical in shape.

[0095] The ring-shaped hollow 482 can have a larger radius than the recording 472 and extend extensively around a section of the inlet. The ring-shaped depression can extend axially from the first mating surface. 414a opposite a distal end808 the recording 472 extend. However, the ring-shaped depression can 482 axially along only one section of a length of the recording 472 extend. The ring-shaped depression 482 can a fourth connection surface 812 include.

[0096] If the gearbox 400a ( Fig. 5A) in a composite or pre-assembled configuration, the pin 470 received in the recording 472 The first connection surface 802 of the pen 470 can be connected to the third connection surface 810 the recording 472 intervene. The ring-shaped protrusion 480 is received in the ring-shaped hollow 482 The second connection surface 814 of the ring-shaped protrusion 480 can intervene in the fourth connection surface 812 the ring-shaped hollow 482 The ring-shaped protrusion 480 and the ring-shaped depression482 These can be collectively referred to as pre-assembly limiting features.

[0097] Back to referring to Fig. 5A can the gearbox 400a exhibit two pre-assembly limiting features, such as two pairs of annular protrusions and recesses 480 , 482 That means the gearbox. 400a It can have dual limiting features. The first section 402a can the recording 472 and the ring-shaped depression 482 include and the second section 404a can the pens 470 and the ring-shaped protrusion 480as shown. In various other implementations, a first section may include pins and projections, while a second section may include receptacles and recesses. In various other implementations, both the first and second sections may include pins, annular projections, receptacles, and annular recesses.

[0098] With reference to Fig. 9 is another gearbox 400d Illustrated. The structure and function of the gearbox. 400d It can be essentially similar to that of the gearbox. 400a, with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "d") are used to identify features that have been modified.

[0099] The gearbox 400d includes a first part or section 402d and a second part or section 404d A boundary or joint (cf. e.g. boundary) 406a from Fig. 5A) between the first and second parts 402d , 404d defines a three-dimensional curve, such as a section of an ellipsoid, a cone, or a sphere.

[0100] The first section 402d includes a first body 410d The first body 410d includes a first outer surface 412a and a first mating surface or curved surface 414d The second section 404d includes a second body 416d The second body 416d includes a second outer surface 418a and a second mating surface or curved surface 420d One of the first and second passing surfaces 414d , 420d is concave and the other is from the first and second pass surface 414d , 420d is convex.

[0101] The first body 410d of the first section 402d defines a first longitudinal deepening 440 and a first peripheral deepening 442a The first longitudinal deepening 440 and the first peripheral depression 442a are in flow connection with each other. The second body416d of the second section 404d defines a second longitudinal depression 446 and a second peripheral depression 448a The second longitudinal depression 446 and the second peripheral depression 448a are in flow connection with each other.

[0102] The first and second longitudinal depressions 440 , 446 They work together to define a longitudinal passage (see, for example, longitudinal passage). 452 from Fig. 5A). The first and second peripheral depressions 442a , 448a They work together to define a peripheral image (see, for example, peripheral image). 454a from Fig. 5A). While the gearbox 400d The gearbox shown is of an open type; the gearbox can 400d further walls similar to the walls 444 , 446 of the gearbox 400 the Fig. 4A-4E include and can be a closed-type gearbox. The gearbox 400d may further include third and fourth openings 464 , 466 for receiving fasteners.

[0103] The second section 404d can use a pen 470 and a pen 470d include. A ring-shaped protrusion 480 can be a section of the pen 470 extend, as previously mentioned in relation to the Fig. 8A-8B was described. The pen 470d can move from the second passing area 420d between a proximal end or base 900 and a distal end 902 extend. The pen 470d can a first connection surface 904 include those located between the proximal end 900 and the distal end 902 extends.

[0104] The first section 402d can a recording 472 and a recording472d include a ring-shaped depression. 482 may be a section of the recording 472 extend as described above in relation to the Fig. 8A-8B was described. The recording 472d can move into the first passing area 414d from a proximal end 906 to a distal end (not shown). The recording 472d can a second connection surface 910 include those located between the proximal end 906 and extends to the distal end.

[0105] If the gearbox 400d In a composite or pre-assembled configuration, the recording receives 472d the pen 470d The first connection surface 904 can be connected to the second connection surface 910 limits. The gearbox 400d includes a single pre-assembly limiting feature (e.g., the ring-shaped protrusion and recess) 480 , 482Accordingly, the gearbox can 400d be asymmetric with respect to a plane defined by a central axis 912 and between a top 914 and lower part 916 of the gearbox 400d extends. Although the ring-shaped protrusion and hollow 480 , 482 shown as on a first page 918 Lying on the plane, the ring-shaped protrusion and depression 480 , 482 alternatively on a second page 920 be of the level.

[0106] With reference to Fig. 10 is a different gearbox. 400e Illustrated. The structure and function of the gearbox. 400e It can be essentially similar to that of the gearbox. 400d, with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "e") are used to identify features that have been modified.

[0107] The gearbox 400e includes a first part or section 402e and a second part or section 404e A boundary or joint (cf. e.g. boundary) 406a from Fig. 5A) between the first and second parts 402e , 404e defines a three-dimensional curve, such as a section of an ellipsoid, a cone, or a sphere.

[0108] The first section 402e includes a first body 410e The first body 410e includes a first outer surface 412a and a first mating surface or curved surface 414e The second section 404e includes a second body 416e The second body 416e includes a second outer surface 418a and a second mating surface or curved surface 420e One of the first and second passing surfaces 414e , 420e is concave and the other is from the first and second pass surface 414e , 420e is convex.

[0109] The first body 410e of the first section 402e defines a first longitudinal deepening 440 and a first peripheral deepening 442a The first longitudinal deepening 440 and the first peripheral depression 442a are in flow connection with each other. The second body416e of the second section 404e defines a second longitudinal depression 446 and a second peripheral depression 448a The second longitudinal depression 446 and the second peripheral depression 448a are in flow connection with each other.

[0110] The first and second longitudinal depressions 440 , 446 They work together to define a longitudinal passage (see, for example, longitudinal passage). 452 from Fig. 5A). The first and second peripheral depressions 442a , 448a They work together to define a peripheral image (see, for example, peripheral image). 454a from Fig. 5A). While the gearbox 400e The gearbox shown is of an open type; the gearbox can 400e in other implementations further walls similar to the walls 444 , 446 of the gearbox 400 the Fig. 4A-4E include and can be a closed-type gearbox. The gearbox 400e may further include third and fourth openings 464 , 466 for receiving fasteners.

[0111] The second section 404e can hold two pens 470d include the first section 402d can record two images 472d included. If the gearbox 400e In a composite or pre-assembled configuration, the recordings are received 472d the corresponding pens 470d The gearbox 400e can be symmetrical with respect to a plane defined by a central axis 912 and between a top 914 and a lower part 916 of the gearbox 400e extends. The gearbox 400e can be free of pre-assembly limiting features (e.g., one or more pairs of annular protrusions and recesses)480 , 482 as at least in the Fig. 8A-9 is shown). Elastic layer

[0112] A gearbox according to the principles of this disclosure can further comprise an elastic layer on a first mating surface and / or a second mating surface. The elastic layer can be referred to in various implementations as an elastic compensation element. The elastic layer facilitates the compensation of relatively large manufacturing tolerances in the bodies of the gearbox sections and, more specifically, the mating surfaces. An elastic layer can be particularly advantageous when used in a gearbox without pre-assembly limit features (see, e.g., gearbox). 400e from Fig. 10), but can also be used in gearboxes with pre-assembly limit features (see e.g. gearbox). 400a , 400dThe elastic element can be made of an elastic material, such as nitrile butadiene rubber, which has a predetermined compression hardness.

[0113] With reference to the Fig. 11A-11B is a different gearbox. 400f Illustrated. The structure and function of the gearbox. 400f It can be essentially similar to that of the gearbox. 400e , with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "f") are used to identify features that have been modified.

[0114] The gearbox400f includes a first part or section 402f and a second part or section 404f A boundary or joint 406f between the first and second parts 402f , 404f defines a three-dimensional curve, such as a section of an ellipsoid, a cone, or a sphere. The first section 402e includes a first body 410e and the second section 404f includes a second body 416e The first and second bodies 410e , 416e include first and second pass surfaces 414e , 420e .

[0115] The second section 404f further includes an elastic layer 1100 The elastic layer 1100 can be arranged on a second mating surface 420e , for example directly at the second pass surface 420e The elastic layer 1100 can be coupled to the second pass surface420e The elastic layer 1100 can have a substantially uniform thickness. For example, the elastic layer can 1100 a thickness 1102 define in the range of 1 mm to 1.5 mm.

[0116] In other implementations, an elastic layer may be present additionally or alternatively at the first fitting surface of a second section. The use of an elastic layer, such as the elastic layer 1100 can be equally useful for gearboxes of an open type or a closed type, which have any mating surface curvatures (e.g. ellipsoidal, conical, spherical) and any number of pre-assembly limiting features, including none. Fastener

[0117] A gearbox assembly according to the principles of this disclosure may comprise any of the gearboxes discussed herein and a variety of fasteners. The fasteners may include, for example, screws, rivets, and / or bolts. Rivets may be individual components separate from the gearbox sections. Additionally or alternatively, one or both of the first and second sections may include embedded or integrated rivets. A gearbox may include more than one type of such fastener, such as any combination of fasteners described herein.

[0118] With reference to the Fig. 12A-12C is a gearbox assembly 1200 provided in accordance with the principles of the present disclosure. The gearbox arrangement 1200 includes the gearbox 400a (cf.) Fig. 5A-5B and related discussion) and a variety of fasteners 1202The fasteners 1202 This can include screws, such as self-tapping screws. In some implementations, the variety of fasteners can be used. 1202 four fasteners.

[0119] How best to Fig. As shown in 12B, any fastener can be used. 1202 a shaft 1204 , a head 1206 and a thread 1208 , which extends along at least one section of the shaft 1204 extends, encompass. The shaft 1204 can be accessed through third and fourth openings 464 , 466 extend. The head 1206 may be arranged at least partially in a depression 1210 in the second body 416a , so that an end 1212 of the head 1206 smoothly terminates with at least one section of the outer surface 412a of the second body 416a The thread 1208 can be incorporated into a surface 1214 the third opening 464intervene to complete the first and second sections 402a , 404a to couple them together. In the composite configuration as in Fig. As shown in 12C, the pens can 470 and ring-shaped projections 480 be arranged in the recordings 472 or ring-shaped depressions 482 In other implementations, the orientation of the screws may be determined. 1202 be reversed, so that the head 1206 into the first body 410a engages and the thread 1208 into the second body 416a intervenes.

[0120] Although the Fig. 12A-12C the gearbox arrangement 1200If the present disclosure shows a gearbox of an open type having ellipsoidal mating surfaces and double pre-assembly limiting features, the use of screws is similarly applicable to assemble other gearboxes according to the principles of the present disclosure. For example, a gearbox assembly may comprise screws and a gearbox that (i) is of an open type or a closed type, (ii) has ellipsoidal, conical, spherical, or other three-dimensionally curved mating surfaces, (iii) includes none, one, two, or more than two pre-assembly limiting features, and (iv) includes or is free of an elastic layer.

[0121] With reference to the Fig. 13A-13D is a gearbox assembly 1300 provided in accordance with the principles of the present disclosure. The gearbox arrangement 1300 includes the gearbox 400e (cf.) Fig. 10 and the attached description) and a variety of fasteners 1302 The fasteners 1302 They can include rivets. Before arrangement and deformation, each rivet can be a single and detachable component. In other implementations, the multitude of fasteners can be 1302 comprise four rivets.

[0122] How best to Fig. As shown in 13C, any fastener can be used. 1302 a shaft 1304 and a head 1306 include the shaft. 1304 can have a tail 1308 include that which is bent, compressed, or deformed to form a second head 1308' to form and thereby the fastener 1302 to transform from an undeformed state to a deformed state. The shaft 1304 can be accessed through third and fourth openings 464 , 466 extend. The head 1306 may be arranged at least partially in a depression 1310in the first body 4100 , so that an end 1312 of the head 1306 smoothed with at least one section of the first outer surface 412a of the first body 4100 .

[0123] If the rivets 1302 are in an undeformed state, as is the case in the Fig. As shown in 13A-13C, the tail is 1308 about the second outer surface 418a outwards. If the rivets 1302 are in a deformed state, as is the case in Fig. As shown in 12D, the second head can 1308' to be arranged in a depression 1314 of the second body 416e , so that an end 1316 of the second head 1308' It is smoothed with the second outer surface 418a of the second body 416e The rivets hold in the deformed state. 1302 the gearbox 400ein the composite state by coupling the first and second sections 402e and 404e to each other. In other implementations, the orientation of the rivets can be determined. 1302 be reversed, so that the head 1306 into the second body 416e intervenes and the second head 1308' into the second body 410e intervenes.

[0124] Although Fig. 13A-13D the gearbox arrangement 1300If the gearbox assembly is shown to comprise an open-type gearbox having ellipsoidal mating surfaces and free from pre-assembly limiting features, the use of rivets may likewise be applicable to arrangements of other gearboxes according to the principles of the present disclosure. For example, the gearbox assembly may comprise rivets and a gearbox that (i) is of an open type or a closed type, (ii) has ellipsoidal, conical, spherical, or other three-dimensionally curved mating surfaces, (iii) includes none, one, two, or more than two pre-assembly limiting features, and (iv) includes or is free from an elastic layer.

[0125] With reference to the Fig. 14A-14D is a gearbox assembly 1400 provided in accordance with the principles of the present disclosure. The gearbox arrangement 1400 includes a gearbox 400g, which includes integrated rivets. The structure and function of the gearbox. 400g It can be essentially similar to that of the gearbox. 400a , with the exception of a few features described below and / or shown otherwise in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "g") are used to identify features that have been modified.

[0126] The gearbox 400g includes a first part or section 402g and a second part or section 404g A boundary or joint 406g between the first and second parts 402g , 404gdefines a three-dimensional curve, such as a section of an ellipsoid, a cone, or a sphere. The first section 402g includes a first body 410g The first body 410g includes a first outer surface 412a and a first mating surface or curved surface 414g The second section 404g includes a second body 416g The second body 416g includes a second outer surface 418a and a second mating surface or curved surface 420g One of the first and second passing surfaces 414g , 420g is concave and the other is from the first and second pass surface 414g , 420g is convex. Curvatures of the first and second mating surfaces 414g , 420g are essentially the same and opposite.

[0127] The first body 410g of the first section 402gdefines a first longitudinal deepening 440 and a first peripheral deepening 442a The first longitudinal deepening 440 and the first peripheral depression 442a are in flow connection with each other. The second body 416g of the second section 404g defines a second longitudinal depression 446 and a second peripheral depression 448a The second longitudinal depression 446 and the second peripheral depression 448a are interconnected by the flow. The first and second longitudinal depressions 440 , 446 work together to achieve longitudinal passage 452 ( Fig. 14B). The first and second peripheral depressions 442a , 448a work together to achieve peripheral uptake 454a ( Fig. 14B) to define. While the gearbox 400gThe gearbox shown is of an open type; the gearbox can 400g In other implementations, walls are similar or identical to the walls 444 , 446 of the gearbox 400 the Fig. 4A-4E and be a closed-type gearbox.

[0128] The second section 404g can be a first pair of integrated rivets 1402 and a second pair of integrated rivets 1404 include the first and second pairs of rivets. 1402 , 1404 can be formed in an integrated manner with the second body 416g The first and second pairs of rivets 1402 , 1404 can move from the second passing area 420g extend. The rivets 1402 , 1404 They can have circular or oval cross-sections. In the implementations shown, the rivets have... 1402 of the first pair circular cross-sections and the rivets1404 The second pair have oval cross-sections.

[0129] The first section 402g can a first pair of rivet holes 1406 and a second pair of rivet holes 1408 include. The first and second pairs of rivet holes can be defined in the first mating surface. 414g The rivet holes 1406 , 1408 can have cross-sectional shapes that correspond to the cross-sectional shapes of the rivets 1402 , 1404 They fit. In the embodiment shown, the rivet openings have 1406 of the first pair circular cross-sections and the rivet openings 1408 The second pair have oval cross-sections.

[0130] The first and second pairs of rivet openings 1406 , 1408 can be adapted to accommodate first or second pairs of rivets 1402 , 1404to receive. Before deformation, while in a pre-assembled configuration, the rivets can 1402 , 1404 about the first outer surface 412a protrude, as it is in the Fig. 14B-14C is shown. In the assembled configuration, the rivets 1402 , 1404 kinked, compressed, or deformed into a deformed state. More specifically, first and second tails can be described. 1410 , 1412 ( Fig. 14C) the rivets 1402 , 1404 the first and second pairs are deformed into corresponding first and second heads 1410' , 1412' ( Fig. 14D). The first and second heads 1410' , 1412' can be arranged in corresponding first and second depressions 1414 , 1416 in the first outer surface 414a .

[0131] In other implementations, the locations of the rivets and rivet holes may be reversed, so that the first sections contain rivets and the second sections contain rivet holes. In some implementations, both the first and second sections contain rivets and rivet holes.

[0132] Although the Fig. 14A-14D the gearbox arrangement 1400As shown in the present disclosure, the inclusion of integrated rivets is similarly applicable to the assembly of other gearboxes according to the principles of this disclosure. For example, the gearbox assembly may include integrated rivets on the gearbox, which (i) is of an open type or a closed type, (ii) has ellipsoidal, conical, spherical, or other three-dimensionally curved mating surfaces, (iii) includes none, one, two, or more than two pre-assembly limiting features, and (iv) includes or is free of an elastic layer. Gear arrangements

[0133] Gearboxes according to the principles of this disclosure are adapted to accommodate a variety of different gear arrangement configurations. In various implementations, a single universal gearbox is adapted to accommodate a gear system comprising any combination of the following features. For example, gearboxes according to the principles of this disclosure may (i) comprise a simple enclosing cross-axis gear system or a helical cross-axis gear system, (ii) be of normal strength or increased strength, and (iii) be adapted to operate within a comfort speed range, a high-speed range, or an ultra-high-speed range.

[0134] A single-envelope cross-axis drive system comprises a worm gear and a single-envelope gear unit that mesh operatively and are adapted to rotate around vertical axes. Single-envelope cross-axis drive systems can be robust and cost-effective. A helical cross-axis drive system comprises a worm gear and a helical gear unit that mesh operatively and are adapted to rotate around vertical axes. A helical cross-axis drive system can be adapted to operate more quietly than a single-envelope cross-axis drive system.

[0135] A standard-strength electric length adjustment system includes a leadscrew capable of withstanding axial forces of at least 19 kN. The leadscrew for a standard-strength electric length adjustment system may have trapezoidal threads designated as Tr 8×3 (P1.5) (8 mm nominal diameter, 3 mm pitch, and 1.5 mm thread height). A heavy-duty electric length adjustment system includes a leadscrew capable of withstanding axial forces of at least 25 kN. The leadscrew for the heavy-duty electric length adjustment system may have trapezoidal threads designated as Tr 9×3 (P1.5) (9 mm nominal diameter, 3 mm pitch, and 1.5 mm thread height).

[0136] Speed ​​classifications can be achieved through a combination of gear ratio and motor parameters (e.g., speed). In various implementations, a gearbox, according to the principles of this disclosure, can accommodate gear systems with linear adjustment speeds ranging from 17 mm / s to 85 mm / s. In one implementation, a comfort speed system can be adapted to have an average linear adjustment speed in the range of 17 to 22 mm / s. The comfort speed system can have a maximum rotational speed of the electric motor of approximately 3,900 revolutions per minute. The comfort speed system can have a gear ratio of at least 6.5:1. In another implementation, a high-speed system can be adapted to have an average linear adjustment speed in the range of 50 mm / s to 55 mm / s.The high-speed system can have a maximum electric motor rotation speed of approximately 4,900 revolutions per minute. This high-speed system can have a gear ratio of at least 3.333:1. In another implementation, an ultra-high-speed system can be adapted to have an average linear adaptation speed in the range of 80 mm / s to 85 mm / s. This ultra-high-speed system can have a maximum electric motor rotation speed of approximately 6,900 revolutions per minute. This ultra-high-speed system can have a gear ratio of at least 2.6:1.

[0137] A universal gearbox according to the principles of this disclosure can accommodate any combination of the above gear types, strengths, and speeds. That is, a single gearbox design can be provided in an array setup for sequentially accommodating any combination of the above options. Exemplary implementations are described below.

[0138] With reference to the Fig. 15A-15D is an adaptation arrangement 24h Provided in accordance with the principles of this disclosure. The structure and function of the adaptation arrangement. 24h can be essentially similar to those of the adjustment arrangement. 24 ( Fig. 1-3), except for the exceptions described below and / or shown differently in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "h") are used to identify features that have been modified.

[0139] The adjustment arrangement 24h includes a spindle screw or leadscrew 56h , the outer threads 66h and an adjustment sub-arrangement 58h possesses. The adaptation sub-arrangement 58h includes a first gear or cylindrical worm 80h , the spiral outer thread 82h , a second gear or enclosing worm 86h , the outer teeth84h and an internal thread 90h possesses a pair of bearing bushings 78 and a gearbox arrangement 1200 include the gearbox assembly. 1200 includes a gearbox 400a and a variety of fasteners 1202 The gearbox 400a includes first and second sections 402a , 404a Although it is not shown, the matching subarray can 58h further a support framework (e.g. support framework) 74 the Fig. 1-3) and a pair of cover sleeves (e.g. first and second cover sleeves) 116 , 118 the Fig. 1-3). The adaptation sub-arrangement 24h Alternatively, it may include any of the other gearbox arrangements described herein.

[0140] The threads 66h the spindle screw 56hcan be trapezoidal and defined by Tr 9×3 (P1.5) (9 mm nominal diameter, 3 mm pitch and 1.5 mm pitch height). The fitting arrangement 24h can have a minimum axial strength of 25 kN and be considered an adaptation arrangement with increased strength. The second gear 86h It can be a simple enclosing worm gear. Therefore, the adaptation arrangement can 24h It can be viewed as a simple enclosing cross-shaft gear system. The adaptation arrangement 24h A comfort speed system can be adapted based on gear ratios and engine parameters.

[0141] With reference to the Fig. 16A-16E is an adaptation arrangement 24i Provided in accordance with the principles of this disclosure. The structure and function of the adaptation arrangement. 24i can be essentially similar to those of the adjustment arrangement. 24 ( Fig. 1-3), except for the exceptions described below and / or shown differently in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "i") are used to identify features that have been modified.

[0142] The adjustment arrangement 24i includes a spindle screw or leadscrew 56h , the outer threads 66h and an adjustment sub-arrangement 58i possesses. The adaptation sub-arrangement 58i includes a first gear or cylindrical worm 80i , the spiral outer thread 82i , a second gear or enclosing worm 86i , the outer teeth84i and an internal thread 90i possesses a pair of bearing bushings 78 , a pair of washers 1600 , a gearbox arrangement 1200 , a pair of cover sleeves 116 , 118 and a support framework 74 The gearbox arrangement 1200 includes a gearbox 400a and a variety of fasteners 1202 The gearbox 400a includes first and second sections 402a , 404a The adjustment sub-arrangement 24i Alternatively, it may include any other gearbox arrangement described herein.

[0143] The spiral gear 86i includes two cylindrical bearing surfaces 162i The outer teeth 84i extend into a space between the bearing surfaces 162i Each washer 1600 is arranged on one of the bearing surfaces.1602 between the outer teeth 84i and a corresponding one of the bearing bushings 78 Each washer 1600 includes a restraint feature such as a rag 1604 , which is in the spiral gear 86 intervenes. The rag 1604 rotation of the washer 1600 regarding the spiral gear 86i reduce or prevent.

[0144] The adjustment arrangement 24i includes a spindle screw 56h , the threads 66h possesses, which are defined by Tr 9×3 (P1.5) (9 mm nominal diameter, 3 mm pitch and 1.5 mm pitch height). The adjustment arrangement 24i It can have a minimum axial strength of 25 kN and can be considered an adaptation arrangement with increased strength. The second gear 86i It can be a spiral gear. Therefore, the adaptation arrangement can 24ican be viewed as a spiral cross-axis gear system. The adaptation arrangement 24i It may be adapted to be a comfort speed system due to gear ratios and engine parameters.

[0145] With reference to the Fig. 17A-17E is an adaptation arrangement 24j Provided in accordance with the principles of this disclosure. The structure and function of the adaptation arrangement. 24j can be essentially similar to those of the adjustment arrangement. 24 ( Fig. 1-3), except for the exceptions described below and / or shown differently in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "j") are used to identify features that have been modified.

[0146] The adjustment arrangement 24j includes a spindle screw or leadscrew 56j , the outer threads 66j and an adjustment sub-arrangement 58j possesses. The adaptation sub-arrangement 58j includes a first gear or cylindrical worm 80j , the spiral outer thread 82j , a second gear or enclosing worm 86j , the outer teeth84j and an internal thread 90j possesses a pair of bearing bushings 78 , and a gearbox arrangement 1200 The gearbox arrangement 1200 includes a gearbox 400a and a variety of fasteners 1202 The gearbox 400a includes first and second sections 402a , 404a The adjustment sub-arrangement 24j Alternatively, it may include any other gearbox arrangement described herein. Although not shown, the adapting sub-arrangement may 58j further include a support framework (e.g. support framework) 74 the Fig. 1-3) and a pair of cover sleeves (e.g. first and second cover sleeves) 116 , 118 the Fig. 1-3).

[0147] The threads 66j the spindle screw 56jcan be trapezoidal and defined by Tr 8×3 (P1.5) (8 mm nominal diameter, 3 mm pitch and 1.5 mm pitch height). The fitting arrangement 24j can have a maximum strength of 19 kN and be considered a normal-strength adjustment arrangement. The second gear 86j It can be a simple enveloping worm gear. Therefore, the adaptation arrangement can be viewed as a simple enveloping vertical cross-axis gear system determined by the gear ratio and motor speed.

[0148] With reference to the Fig. 18A-18D is an adaptation arrangement 24k Provided in accordance with the principles of this disclosure. The structure and function of the adaptation arrangement. 24k can be essentially similar to those of the adjustment arrangement. 24 ( Fig. 1-3), except for the exceptions described below and / or shown differently in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "k") are used to identify features that have been modified.

[0149] The adjustment arrangement 24k includes a spindle screw or leadscrew 56j , the outer threads 66j and an adjustment sub-arrangement 58k possesses. The adaptation sub-arrangement 58k includes a first gear or cylindrical worm 80k , the spiral outer thread 82k , a second gear or enclosing worm 86k , the outer teeth84k and an internal thread 90k possesses a pair of bearing bushings 78 , a pair of washers 1600 , and a gearbox arrangement 1200 The gearbox arrangement 1200 includes a gearbox 400a and a variety of fasteners 1202 The gearbox 400a includes first and second sections 402a , 404a The adjustment arrangement 24k Alternatively, it may include any other gearbox arrangement described herein. Although not shown, the adapting sub-arrangement may 58k further include a support framework (e.g. support framework) 74 the Fig. 1-3), a pair of cover sleeves (e.g. first and second cover sleeves) 116 , 118 the Fig. 1-3).

[0150] The threads 66j the spindle screw 56jcan be trapezoidal and defined by Tr 8×3 (P1.5) (8 mm nominal diameter, 3 mm pitch and 1.5 mm pitch height). The fitting arrangement 24j can have a maximum strength of 19 kN and be considered a normal-strength adjustment arrangement. The second gear 86k It can be a simple enclosing worm gear. Therefore, the adaptation arrangement can 24k They are considered to possess a simply enclosing cross-shaft gear system. The adaptation arrangement 24k It can be adapted to be a high-speed system.

[0151] With reference to the Fig. 19A-19D is an adaptation arrangement 24m Provided in accordance with the principles of this disclosure. The structure and function of the adaptation arrangement. 24m can be essentially similar to those of the adjustment arrangement. 24 ( Fig. 1-3), except for the exceptions described below and / or shown differently in the figures. Accordingly, the structure and / or function of similar features are not described again in detail. Additionally, identical reference numbers are used below and in the drawings to identify identical features, while identical reference numbers with a letter suffix (i.e., "m") are used to identify features that have been modified.

[0152] The adjustment arrangement 24m includes a spindle screw or leadscrew 56j , the outer threads 66j and an adjustment sub-arrangement 58m possesses. The adaptation sub-arrangement 58m includes a first gear or cylindrical worm 80j , the spiral outer thread 82j , a second gear or enclosing worm 86m , the outer teeth84m and an internal thread 90m possesses a pair of bearing bushings 78 , a pair of washers 1600 , and a gearbox arrangement 1200 The gearbox arrangement 1200 includes a gearbox 400a and a variety of fasteners 1202 The gearbox 400a includes first and second sections 402a , 404a The adjustment arrangement 24m Alternatively, it may include any other gearbox arrangement described herein. Although not shown, the adapting sub-arrangement may 58m further include a support framework (e.g. support framework) 74 the Fig. 1-3), a pair of cover sleeves (e.g. first and second cover sleeves) 116 , 118 the Fig. 1-3).

[0153] The threads 66j the spindle screw 56jcan be trapezoidal and defined by Tr 8×3 (P1.5) (8 mm nominal diameter, 3 mm pitch and 1.5 mm pitch height). The fitting arrangement 24j It can have a minimum strength of 19 kN and be considered a normal-strength adjustment arrangement. The second gear 86m It can be a simple enclosing worm gear. Therefore, the adaptation arrangement can 24m They are considered to possess an enclosing vertical gear system. The adaptation arrangement 24m It can be adapted to be an ultra-high-speed system.

[0154] In accordance with the principles of this disclosure, an electrical length-adjusting arrangement may comprise a gearbox assembly, a gear system, and a spindle screw. The gearbox assembly may comprise a gearbox and a plurality of fasteners. The gearbox may be of an open or closed type. The gearbox may comprise two parts or sections having mating surfaces with three-dimensional curvature, such as ellipsoidal, conical, or spherical. The fasteners may include screws (e.g., self-tapping screws), rivets (e.g., separate rivets, integrated rivets), bolts, or a combination thereof. The gear system may be an enveloping perpendicular gear system or a helical perpendicular gear system.The gearbox system can be configured to be a comfort speed system, a high-speed system, or an ultra-high-speed system. The lead screw can be a standard-strength lead screw or a heavy-duty lead screw.

[0155] The foregoing description of the embodiments has been provided for illustrative and descriptive purposes. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of particular embodiments are generally not limited to that specific embodiment, but may, where applicable, be interchanged and used in a selected embodiment, even if not specifically shown or described. The same can likewise be varied in many different ways. Such variations should not be understood as a departure from the disclosure, and all such modifications should be understood as being included within the scope of the disclosure. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 63 / 019054

[0001]

Claims

[1] Having a gearbox for a vehicle seat adjustment mechanism: a first section comprising a first body, wherein the first body defines a first longitudinal depression and a first peripheral depression in flow connection with the first longitudinal connection, and comprises a first curved surface, wherein the first curved surface is concave; and a second section comprising a second body, wherein the second body defines a second longitudinal depression and a second peripheral depression in flow connection with the second longitudinal depression, and comprises a second curved surface, wherein the second curved surface is convex and has an equal and opposite curvature compared to the first curved surface, wherein in a composite configuration: the first curved surface is in contact with the second curved surface, The first longitudinal depression communicates with the second longitudinal depression to define a longitudinal passage, and The first peripheral depression communicates with the second peripheral depression to define a peripheral uptake. [2] The gearbox according to claim 1, wherein the first curved surface and the second curved surface both define (i) a section of an ellipsoidal surface, (ii) a section of a conical surface, or (iii) a section of a spherical surface. [3] The gearbox according to claim 1, wherein the first curved surface and the second curved surface both define a section of an ellipsoidal surface, the ellipsoidal surface having a first radius in a range of 190 mm to 200 mm and a second radius in a range of 240 mm to 250 mm. [4] The gearbox according to claim 1, wherein the first curved surface and the second curved surface define a section of a conical surface, the conical surface having an average opening angle in a range of 165° to 172°. [5] The gearbox according to claim 1, wherein the first curved surface and the second curved surface both define a section of a spherical surface, the spherical surface having a radius in a range of 190 mm to 200 mm. [6] The gearbox according to claim 1, wherein: one of the first section and the second section comprises a frustoconical projection extending from a corresponding one of the first curved surface and the second curved surface; The other of the first section and the second section comprises a frustoconical indentation, which is defined by a corresponding one of the first curved surface and the second curved surface, and In a compound configuration, the frustoconical recess receives the frustoconical projection. [7] The gearbox according to claim 6, wherein: one of the first section and the second section further comprises an annular projection extending from the corresponding one of the first curved surface and the second curved surface, the annular projection being arranged around a base of the frustoconical projection and coaxial with the frustoconical projection, The other of the first section and the second section further comprises an annular trough, which is defined by a corresponding one of the first curved surface and the second curved surface, wherein the annular trough is coaxial with the frustoconical recess, and In the compound configuration, the annular recess receives the annular projection. [8] The gearbox according to claim 7, wherein the frustoconical projection comprises a first frustoconical projection and a second frustoconical projection, wherein the frustoconical receptacle comprises a first frustoconical receptacle and a second frustoconical receptacle, wherein the annular projection comprises a first annular projection and a second annular projection, and wherein the annular recess comprises a first annular recess and a second annular recess. [9] The gearbox according to claim 1, further comprising: an elastic layer arranged on at least one of the first curved surface or the second curved surface. [10] The gearbox according to claim 1, wherein: one of the first section and the second section comprises an integrated rivet extending from a corresponding one from the first curved surface and the second curved surface, and The other of the first section and the second section comprises an opening defined in a corresponding one of the first curved surface and the second curved surface, the opening being adapted to receive a section of the integrated rivet. [11] The gearbox according to claim 1, further comprising: a variety of fasteners adapted to couple the first section and the second section together. [12] The gearbox according to claim 1, wherein: The gearbox is adapted to accommodate at least one section of a cross-axis gear system and a spindle screw, and the cross-axis gear system comprises a first gear in operational communication with a second gear, the second gear being in operational communication with the spindle screw. [13] The gearbox according to claim 12, wherein the gearbox system is adapted to be operated at one of: (i) a comfort speed with a linear adjustment speed ranging from 17 mm / s to 22 mm / s, (ii) a high speed with a linear adjustment rate ranging from 50 mm / s to 55 mm / s, or (iii) an ultra-high speed with a linear adjustment speed ranging from 80 mm / s to 85 mm / s. [14] The gearbox according to claim 12, wherein the first gear is a cylindrical worm gear and the second gear is a helical gear or a simple enclosing worm gear. [15] Having a vehicle seat adjustment arrangement: a gearbox assembly a first section comprising a first body, wherein the first body defines a first longitudinal depression and a first peripheral depression in flow connection with the first longitudinal depression, and comprises a first curved surface, wherein the first curved surface is concave; and a second section comprising a second body, wherein the second body defines a second longitudinal depression and a second peripheral depression and comprises a second curved surface, wherein the second longitudinal depression interacts with the first longitudinal depression to define a longitudinal passage, wherein the second peripheral depression interacts with the first peripheral depression to define a peripheral recess, wherein the second curved surface is convex and has an equal and opposite curvature compared with the first curved surface, and is in contact with the first curved surface; a transmission system a first gear arranged at least partially within the peripheral receptacle, wherein the first gear comprises a first external thread, wherein the first gear is adapted to rotate about a first axis, and a second gear arranged at least partially within the longitudinal passage, the second gear comprising external teeth and an internal thread and defining a gear passage, the external teeth being in operative communication with the first external thread, the second gear being adapted to rotate about a second axis perpendicular to the first axis; and a spindle screw extending through the gear passage and comprising a second outer thread, the second outer thread being in operational communication with the inner thread. [16] The vehicle seat adjustment arrangement according to claim 15, wherein the first curved surface and the second curved surface both define (i) a section of an ellipsoidal surface, (ii) a section of a conical surface, or (iii) a section of a spherical surface. [17] The vehicle seat adjustment arrangement according to claim 15, wherein the second gear is of (i) a spindle gear or (ii) a single enveloping worm gear. [18] The vehicle seat adjustment arrangement according to claim 15, wherein: the second outer thread is a trapezoidal thread, and the spindle screw has a pitch of 3 mm, a thread height of 1.5 mm, and one of (i) a nominal diameter of 8 mm or (ii) a nominal diameter of 9 mm. [19] The vehicle seat adjustment arrangement according to claim 15, wherein the transmission system is adapted to be operated at one of: (i) a comfort speed with a linear adjustment speed ranging from 17 mm / s to 22 mm / s, (ii) a high speed with a linear adjustment rate ranging from 50 mm / s to 55 mm / s, or (iii) an ultra-high speed with a linear adjustment speed ranging from 80 mm / s to 85 mm / s. [20] The gearbox arrangement according to claim 15, wherein: One of the first section and the second section comprises a frustoconical projection and an annular projection extending from a corresponding point on the first curved surface and the second curved surface, the annular projection being arranged around a base of the frustoconical projection and being coaxial with the frustoconical projection. The other of the first section and the second section comprises a frustoconical recess and an annular trough, which are defined by a corresponding curve of the first curved surface and the second curved surface, wherein the annular trough is coaxial with the frustoconical recess, and The frustoconical recess is adapted to receive the frustoconical projection, and the annular recess is adapted to receive the annular projection.