Three rack and pinion guide modules with integrated drive and their use in a pull-out system for vehicle bodies

Abstract

Rack and pinion guide module with integrated helical drive (23), comprising a module housing (1), a helical gear unit (31), a helical drive housing (17A), a helical gear housing (18A), a motor (5), a first slide (2A), a second slide (2B), a third slide (2C), a fourth slide (2D), a first guide rail (3A), a second guide rail (3B) and a combined support rack (38), characterized in that the drive housing (17A) and the gear housing (18A) are arranged in the module housing (1), that the motor (5) is arranged in the drive housing (17A) and the helical gear unit (31) is arranged in the gear housing (18A), that mounting holes of the first type (301) are provided on the first guide rail (3A) and mounting holes of the second type (302) are provided on the second guide rail (3B),that fastening holes (39) are formed on a vertical web of the combined support rack (38) corresponding to the fastening holes (301, 302), so that the first guide rail (3A) and the second guide rail (3B) are attached to both sides of the web of the combined support rack (38), that a rack (35) is provided on the underside of the combined support rack (38), that the first carriage (2A) and the second carriage (2B) are slidably connected to the first guide rail (3A) and the third carriage (2C) and the fourth carriage (2D) are slidably connected to the second guide rail (3B), and that the first carriage (2A) and the second carriage (2B) are attached to one side of the module housing (1), while the third carriage (2C) and the fourth carriage (2D) are attached to the opposite side of the module housing (1).

Description

Technical field

[0001] The present invention relates to three rack and pinion guide modules with integrated drive and their use in a pull-out system for vehicle bodies. The invention belongs to the technical field of mechanical motion devices and systems for expanding space in vehicles. State of the art

[0002] Conventional mechanical drive units and modules typically require an external drive to enable transmission and movement. DE 10 2019 131 278 A1 discloses a rack and pinion guide and transmission module that requires an external drive. Such an external drive requires considerable installation space and complicates assembly.

[0003] US patent 202117A408020 A discloses an extension device for a vehicle arranged on both sides of an extendable box. Due to its complex mechanics, the telescopic drive unit occupies a lot of installation space, is difficult to access, and requires extensive maintenance, which increases operating costs.

[0004] The inventor recognized that known mechanical drives and modules always require an external drive source and that, when used in a pull-out system for vehicle bodies, the pull-out mechanisms are bulky, difficult to assemble, and take up a lot of installation space. Object of the invention

[0005] It is therefore an object of the invention to provide mechanical drive modules and a pull-out system for vehicle bodies that have an integrated drive, a compact design, are easy to assemble and disassemble, and enable precise linear movement even under high loads. Summary of the invention

[0006] To solve this problem, the invention provides three rack and pinion guide modules with integrated drives, namely a skewed-axis module, a cross-axis module, and a parallel-axis module. Furthermore, a pull-out system for vehicle bodies is provided, which utilizes one of the rack and pinion guide modules with integrated drives.

[0007] The three rack and pinion guide modules each have an integrated drive source and require only a small volume. During operation, a single power supply is sufficient to convert the rotary motion of the motor into the linear motion of a rack and pinion guide, thus enabling highly precise linear motion even under heavy loads.

[0008] In a first embodiment, a rack and pinion guide module with an integrated drive in a helical configuration is provided. The module comprises a module housing (1), a helical gear unit (31), a drive housing (17A), a gear housing (18A), a motor (5), four carriages (2A-2D), two guide rails (3A, 3B), and a combined support rack (38). The drive housing (17A) and the gear housing (18A) are arranged in the module housing (1), the motor (5) is located in the drive housing (17A), and the helical gear unit (31) is located in the gear housing (18A). The two guide rails (3A, 3B) are attached to a web of the combined support rack (38) via aligned mounting holes (301, 302, 39), the underside of which forms the rack (35). The carriages (2A-2D) are coupled to the guide rails (3A, 3B) and attached to opposite sides of the module housing (1).

[0009] This design integrates the drive housing (17A) and the gearbox housing (18A) within the module housing (1). The module forms its own drive unit; by applying voltage to the motor (5), the rack (35) is guided along the carriage (2A-2D) as a linear movement under high load and with high accuracy, thus realizing a self-driven rack with synchronous reciprocating linear motion. Assembly and disassembly are simple, and the overall appearance is compact and attractive.

[0010] Preferably the drive housing (17A) and the gearbox housing (18A) are separated by a first partition (4A) in which a first drive opening (19A) is provided, so that the output shaft of the motor (5) projects through this opening into the gearbox housing (18A) and drives the skewed gearbox unit (31).

[0011] In a preferred embodiment, the helical gear unit (31) comprises an output shaft (6), a worm (8), a worm wheel (9), a helical output gear (10), retaining rings (601A, 601B), and bearings (14A-14D). The worm wheel (9) and the helical output gear (10) are mounted on the output shaft (6); the retaining rings (601A, 601B) axially secure these components. The output shaft (6) is supported on both sides by the bearings (14A, 14B), and the worm (8) is supported on both sides by the bearings (14C, 14D). The output shaft of the motor (5) is coupled through the first drive opening (19A) to the worm (8), which meshes obliquely with the worm gear (9), while the skewed output gear (10) meshes with the rack (35), so that a rotary motion is converted into a linear motion.

[0012] The bearings (14A, 14B) supporting the output shaft (6) reduce friction during movement. Similarly, the bearings (14C, 14D) supporting the worm gear (8) reduce friction during operation.

[0013] In a further embodiment, bearing caps (12A-12C) are provided on the module housing (1), which interact with the bearings (14A-14C) in the bearing holes (36A-36C). This supports the output shaft (6) in the area of ​​the bearings (14A, 14B), so that the worm gear (9) and the helical output gear (10) can be easily mounted and maintained. The bearing cap (12C) and the bearing (14C) support the worm (8) and facilitate its assembly and maintenance; the fourth bearing (14D) supports the motor (5) and the worm (8) and facilitates the installation of the motor (5).

[0014] It is advantageous to provide a gear oil lubrication nipple (16) on an outside of the gearbox housing (18A), through which the gear teeth are lubricated and friction is reduced.

[0015] The module housing (1) preferably has a removable motor cooling cover (7A) on the side facing the drive housing (17A). The electrical cable of the motor (5) can be routed through a feedthrough opening (701) formed in the cover (7A). The heat generated during operation can be dissipated via the motor cooling cover (7A), and the cover (7A) can be easily removed for maintenance and installation of the motor (5).

[0016] In a second embodiment, a rack and pinion guide module with an integrated drive in a cross-axial configuration (24) is provided. It comprises a module housing (1), a cross-axial gear unit (32), a drive housing (17B), a gear housing (18B), four slides (2A-2D), two guide rails (3A, 3B), and a combined support rack (38). Compared to the skewed module (23), the skewed gear unit (31) is replaced by the cross-axial gear unit (32).

[0017] The cross-shaft gear unit (32) comprises an input bevel gear (240), the output shafts (243A-243C), an output bevel gear (244A), the gears (244B-244F), the bearings (247A-247F), and the retaining rings (249A-249F). The precise arrangement corresponds to the description in the claims: The output bevel gear (244A) and the second gear (244B) are located on the first output shaft (243A), the third gear (244C) and the fourth gear (244D) on the second output shaft (243B), and the fifth gear (244E) and the sixth gear (244F) on the third output shaft (243C). The output shafts are supported in pairs by the bearings (247A-247F), which are axially secured by suitable retaining rings (249A-249F).

[0018] On the module housing (1), the bearing caps (12D-12J) and the bearing holes (36D-36J) are arranged such that the bearings (247A-247F) are each held in a bearing hole with an associated bearing cap. In this way, the output shafts (243A-243C) are precisely supported and the engagement of the gears (244B-244F) is ensured.

[0019] The output shaft of the motor (5) extends through a second drive opening (19B) formed in a second partition (4B) into the gearbox housing (18B) and is coupled to the input bevel gear (240). The input bevel gear (240) meshes with the output bevel gear (244A), thereby redirecting the rotational motion by 90° and reducing the gear ratio. The output bevel gear (244A) and the second gear (244B) rotate together with the first output shaft (243A). The second gear (244B) drives the third gear (244C), which in turn, together with the fourth gear (244D), is located on the second output shaft (243B). The fourth gear (244D) drives the fifth gear (244E), which together with the sixth gear (244F) sits on the third output shaft (243C); the sixth gear (244F) meshes with the rack (35), so that a rotary motion is converted into a linear motion.

[0020] In a third embodiment, a rack and pinion guide module with integrated drive in a parallel axis configuration (25) is provided. It comprises a module housing (1), a parallel axis gear unit (33), a drive housing (17C), an L-shaped gear housing (18C), four slides (2A-2D), two guide rails (3A, 3B) and a combined support rack (38).

[0021] The parallel drive housing (17C) and the L-shaped gearbox housing (18C) are separated from each other by an L-shaped third partition (4C). The parallel-axis gearbox unit (33) replaces the cross-axis gearbox unit (32). An output shaft of the motor (5) is connected via a third drive opening (19C) formed in the third partition (4C) to a parallel motor gear (250), which meshes in parallel with a first parallel gear (254A). In contrast to the cross-axis module (24), in which the input bevel gear (240) meshes with the output bevel gear (244A) in a cross-cutting manner and causes a deflection, in the parallel-axis module (25) the rotary motion of the motor (5) is transmitted directly to the rack (35) via the parallel-meshing gears (250, 254A).

[0022] The other gears of the parallel-axis gear unit (33) are coupled to the output shafts (243A-243C) in such a way that – analogous to the cross-axis design – several gear pairs ultimately drive a gear meshing with the rack (35). The parallel gearing converts the rotary motion into a linear motion without any change in direction.

[0023] In all three modules, the first guide rail (3A), the second guide rail (3B) and the combined support rack (38) can be designed as a cantilever during extension and retraction, so that the extension length can be increased without the need for additional support elements.

[0024] Connecting holes (20) are provided on the upper side of the combined support rack (38) so that, depending on the application, a load-bearing object can be connected to the combined support rack (38) via these connecting holes (20). This allows the skewed module (23), the cross-axial module (24), or the parallel-axis module (25) to be connected to appropriate support structures in different application environments.

[0025] In a further embodiment, a pull-out system for a vehicle body is provided, which uses a rack and pinion guide module with an integrated drive. The system comprises at least one skewed module (23), cross-axis module (24) or parallel-axis module (25), a support frame (26), a support box (27) and a pull-out box (29).

[0026] As in the Fig. 14 and Fig. As shown in Figure 15, the support box (27) has a removable cover plate (271) on the side facing the vehicle interior, fastening openings (273) on its upper side, and an elongated slot (28) on its underside. The support frame (26) comprises a top plate (261), a base plate (262), and a web plate (263).

[0027] The rack and pinion guide modules with integrated drive (23, 24, 25) are arranged inside the support box (27) and are positioned below the extension box (29) on both sides. Connecting holes (20) are arranged above the combined support rack (38), aligning with the mounting openings (273) in the support box (27), so that the combined support rack (38) can be attached to the top of the support box (27). Base plate mounting openings (21) are provided on the underside of the module housing (1), through which the module housing (1) is attached to the top plate (261) of the support frame (26). The base plate (262) is attached to the vehicle body (30). The two support boxes (27) are arranged on opposite sides of the extension box (29) parallel to its base and move linearly and synchronously.

[0028] As in Fig. As shown in Figure 16, the pull-out box (29) is attached to an opening in the vehicle body (30) via the support frame (26). When the motor (5) is energized and operated in the forward direction, the skewed-axis module (23), the cross-axis module (24), or the parallel-axis module (25) drives the rack (35), which moves the support box (27) outwards. The support box (27) slides outwards along the web plate (263) through the elongated slot (28). The end position of the pull-out box (29) is predetermined; when this position is reached, the extension movement ends, and the pull-out box (29) is fully extended from the opening in the vehicle body (30) (direction A in Figure 16). Fig. 16).

[0029] As in Fig. As shown in Figure 17, the motor (5) is operated in the opposite direction for retraction. The corresponding rack and pinion guide module (23, 24, 25) moves the rack (35) in the opposite direction, so that the support box (27) moves inwards along the web plate (263) through the elongated slot (28). When the extension box (29) is flush with the outer surface of the vehicle body (30), the retraction movement is completed; the extension box (29) is thus fully retracted into the opening of the vehicle body (30) (direction B in Figure 17). Fig. 17).

[0030] Since the support boxes (27) completely enclose the rack and pinion guide modules with integrated drive (23, 24, 25), these are not visible from the outside of the vehicle; this results in a clean and attractive appearance, and the modules are protected from external influences, which facilitates sealing and increases service life. The base plate (262) of the support frame (26) supports the entire pull-out box (29) without the need to dismantle the vehicle underbody; it is sufficient to attach the base plate (262) to the vehicle body (30) so that the pull-out box (29) is freely positioned in the opening and its weight is transferred to the vehicle body (30) via the support frame (26). Advantages of the invention

[0031] The present application offers at least the following technical advantages: (1) The three rack and pinion guide modules with integrated drive have drive units integrated into the module housing (1). No external drive source is required; by forward and reverse operation of the motor (5), the rack (35) is driven via the gear unit (31, 32, 33) to a linear reciprocating motion. This results in a small installation space, and assembly and disassembly are simple. (2) The skewed, cross-axial and parallel-axial rack guide modules (23, 24, 25) can absorb torque and enable highly precise linear movement even under high load. (3) In the pull-out system for vehicle bodies, the rack and pinion guide modules (23, 24, 25) are arranged inside the support boxes (27) so that they are not visible from the outside. This creates a tidy appearance and increases the usable interior space of the vehicle. (4) The pull-out system does not require dismantling the vehicle underbody; assembly and disassembly are simple, as only the base plate (262) of the support frame (26) needs to be attached to the vehicle body (30) to position the pull-out box (29) in the opening of the vehicle. Brief description of the drawings

[0032] For further explanation of the invention, reference is made to the accompanying drawings. They show: Fig. 1: in 1A a view from below and in 1B a view from above of the rack guide module in skewed axial design (23); Fig. 2: a structural overview of the rack guide module in skewed axial design (23); Fig. 3: a schematic representation of the internal structure of the drive housing (17A) and gearbox housing (18A) in the module housing (1); Fig. 4: a section through the rack guide module in skewed axial design (23); Fig. 5: an exploded view of the rack guide module in skewed design (23); Fig. 6: in 6A the not extended state, in 6B an intermediate state during extension and in 6C the fully extended state of the skewed module (23); Fig. 7: in 7A the fully extended state, in 7B an intermediate state during retraction and in 7C the fully retracted state of the skewed module (23); Fig. 8: a structural overview of the rack guide module in cross-axial design (24); Fig. 9: a section through the rack guide module in cross-axial design (24); Fig. 10: an exploded view of the rack guide module in cross-axial design (24); Fig. 11: a structural overview of the rack guide module in parallel axis design (25); Fig. 12: a section through the rack guide module in parallel axis design (25); Fig. 13: an exploded view of the rack guide module in parallel axis design (25); Fig. 14: in 14A a structural overview of the support box (27), in 14B a schematic representation of a rack and pinion guide module with integrated drive and in 14C a structural overview of the support frame (26); Fig. 15: in 15A a section through the extension system in the extended state of the extension box (29) and in 15B a section in the retracted state; Fig. 16: in 16A a view of the drawer system in the retracted state and in 16B a view in the fully extended state; 16C shows an oblique view of the fully extended drawer box (29); Fig.17: in 17A another view of the fully extended state, in 17B a view of the fully retracted state; 17C shows an oblique view of the fully retracted drawer box (29). Examples of implementation

[0033] The embodiments described above serve only to illustrate the invention and do not limit the scope of protection. Based on this description, those skilled in the art can develop further embodiments and variants without any inventive effort that fall within the scope of protection of the claims. Reference symbol list 1 module housing 2A first sled 2B second sled 2C third sled 2D fourth sled 3A first guide rail 3B second guide rail 301 first pilot hole 302 second guide hole 35 Rack and pinion 38 combined support rack 39 Mounting holes for guide rails 5 engine 16 Gear oil grease nipples 17A skewed drive housing 18A skewed gearbox housing 23 skewed rack and pinion guide module 31 swashplate gearbox unit 4A first partition wall 19A first drive opening 6 Output shaft 601A first retaining ring 601B second retaining ring 7A Engine cooling cover 701 Implementation opening 8 snail 9 worm gear 10 helical output gear 14A first warehouse 14B second warehouse 14C third camp 14D fourth camp 36A first bearing hole 36B second bearing hole 36C third bearing hole 17B cross-axis drive housing 18B cross-axis gearbox housing 19B second drive opening 24 cross-axis rack and pinion guide module 32 cross-axis gear unit 4B second partition wall 240 Input bevel gear 243A first output shaft 243B second output shaft 243C third output shaft 244A Output bevel gear 244B second gear 244C third gear 244D fourth gear 244E fifth gear 244F sixth gear 247A fifth warehouse 247B sixth camp 247C seventh bearing 247D eighth bearing 247E ninth warehouse 247F tenth bearing 12A first bearing cap 12B second bearing cap 12C third bearing cap 12G fourth bearing cap 12H fifth bearing cap 12J sixth bearing cap 12D seventh bearing cap 12E eighth bearing cap 12F ninth bearing cap 249A third retaining ring 249B fourth retaining ring 249C fifth retaining ring 249D sixth retaining ring 249E seventh retaining ring 249F eighth retaining ring 36G fourth bearing hole 36H fifth bearing hole 36J sixth bearing hole 36D seventh bearing hole 36E eighth bearing hole 36F ninth bearing hole 17C parallel drive housing 18C parallel gearbox housing 25 Parallel axis rack and pinion guide modules 33 Parallel axis gearbox unit 4C third partition 19C third drive opening 250 Parallel motor gear 254A first parallel gear 26 support frames 261 Cover plate 262 Base plate 263 Multiwall sheet 27 Carrying case 271 Cover plate 273 Mounting opening 28 elongated slit 29 pull-out drawers 30 Vehicle body 20 connecting holes of the support rack 21 Base plate mounting opening on the module housing 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] DE 10 2019 131 278 A1

[0002]

Claims

Rack and pinion guide module with integrated helical drive (23), comprising a module housing (1), a helical gear unit (31), a helical drive housing (17A), a helical gear housing (18A), a motor (5), a first slide (2A), a second slide (2B), a third slide (2C), a fourth slide (2D), a first guide rail (3A), a second guide rail (3B) and a combined support rack (38), characterized in that the drive housing (17A) and the gear housing (18A) are arranged in the module housing (1), that the motor (5) is arranged in the drive housing (17A) and the helical gear unit (31) is arranged in the gear housing (18A), that mounting holes of the first type (301) are provided on the first guide rail (3A) and mounting holes of the second type (302) are provided on the second guide rail (3B),that fastening holes (39) are formed on a vertical web of the combined support rack (38) corresponding to the fastening holes (301, 302), so that the first guide rail (3A) and the second guide rail (3B) are attached to both sides of the web of the combined support rack (38), that a rack (35) is provided on the underside of the combined support rack (38), that the first carriage (2A) and the second carriage (2B) are slidably connected to the first guide rail (3A) and the third carriage (2C) and the fourth carriage (2D) are slidably connected to the second guide rail (3B), and that the first carriage (2A) and the second carriage (2B) are attached to one side of the module housing (1), while the third carriage (2C) and the fourth carriage (2D) are attached to the opposite side of the module housing (1). Rack and pinion guide module according to claim 1, characterized in that the skewed drive housing (17A) and the skewed gear housing (18A) are separated from each other by a first partition (4A) and that a first drive opening (19A) is provided in the first partition (4A). Rack and pinion guide module according to claim 2, characterized in that the helical gear unit (31) comprises an output shaft (6), a worm (8), a worm wheel (9), a helical output gear (10), a first retaining ring (601A), a second retaining ring (601B), a first bearing (14A), a second bearing (14B), a third bearing (14C) and a fourth bearing (14D), that the worm wheel (9) and the helical output gear (10) are mounted on the output shaft (6), wherein the first retaining ring (601A) axially secures the helical output gear (10) and the second retaining ring (601B) axially secures the worm wheel (9), that the first bearing (14A) and the second bearing (14B) are arranged at the two ends of the output shaft (6), that at the the third bearing (14C) and the fourth bearing (14D) are attached to both ends of the worm (8), so that an output shaft of the motor (5) is connected to the worm (8) through the first drive opening (19A),that the worm (8) meshes helically with the worm gear (9) and that the helical output gear (10) meshes with the rack (35), so that a rotary motion is converted into a linear motion. Rack and pinion guide module according to claim 3, characterized in that a first bearing cover (12A), a second bearing cover (12B) and a third bearing cover (12C) as well as a first bearing hole (36A), a second bearing hole (36B) and a third bearing hole (36C) are provided on the module housing (1), wherein the first bearing cover (12A) is arranged together with the first bearing (14A) in the first bearing hole (36A), the second bearing cover (12B) together with the second bearing (14B) in the second bearing hole (36B) and the third bearing cover (12C) together with the third bearing (14C) in the third bearing hole (36C). Rack and pinion guide module according to claim 4, characterized in that a gear oil grease nipple (16) is provided at an outer end of the skewed gear housing (18A). Rack and pinion guide module according to claim 5, characterized in that a removable motor cooling cover (7A) is provided on a side of the module housing (1) facing the inclined drive housing (17A) and that the motor cooling cover (7A) has a through-opening (701) for passing electrical lines to supply the motor (5). Rack and pinion guide module with integrated drive in cross-axial design (24), comprising a module housing (1), a cross-axial gear unit (32), a cross-axial drive housing (17B), a cross-axial gear housing (18B), a first slide (2A), a second slide (2B), a third slide (2C), a fourth slide (2D), a first guide rail (3A), a second guide rail (3B), and a combined support rack (38), characterized in that the rack and pinion guide module in cross-axial design (24) differs from a rack and pinion guide module with integrated drive in helical design (23) in that the cross-axial gear unit (32) is provided instead of the helical gear unit (31), and that the cross-axial gear unit (32) comprises an input bevel gear (240), a first output shaft (243A), and a second output shaft. (243B), a third output shaft (243C), an output bevel gear (244A),a second gear (244B), a third gear (244C), a fourth gear (244D), a fifth gear (244E), a sixth gear (244F), a fifth bearing (247A), a sixth bearing (247B), a seventh bearing (247C), an eighth bearing (247D), a ninth bearing (247E), a tenth bearing (247F), a third retaining ring (249A), a fourth retaining ring (249B), a fifth retaining ring (249C), a sixth retaining ring (249D), a seventh retaining ring (249E) and an eighth retaining ring (249F), comprising that the output bevel gear (244A) and the second gear (244B) are arranged on the first output shaft (243A) and at the two ends of the first output shaft (243A) the fifth bearing (247A) and sixth bearing (247B) are provided, wherein the third retaining ring (249A) axially secures the output bevel gear (244A) and the fourth retaining ring (249B) axially secures the second gear (244B),that the third gear (244C) and the fourth gear (244D) are arranged on the second output shaft (243B) and the seventh bearing (247C) and the eighth bearing (247D) are provided at the two ends of the second output shaft (243B), wherein the fifth retaining ring (249C) axially secures the third gear (244C) and the sixth retaining ring (249D) axially secures the fourth gear (244D); that the fifth gear (244E) and the sixth gear (244F) are arranged on the third output shaft (243C) and the ninth bearing (247E) and the tenth bearing (247F) are provided at the two ends of the third output shaft (243C), wherein the seventh retaining ring (249E) secures the fifth gear (244E) and the eighth retaining ring (249F) the sixth gear (244F) axially fixed, so that on the module housing (1) a fourth bearing cap (12G), a fifth bearing cap (12H), a sixth bearing cap (12J), a seventh bearing cap (12D),An eighth bearing cap (12E) and a ninth bearing cap (12F), as well as a fourth bearing hole (36G), a fifth bearing hole (36H), a sixth bearing hole (36J), a seventh bearing hole (36D), an eighth bearing hole (36E), and a ninth bearing hole (36F) are provided, wherein the fifth bearing (247A) and the fourth bearing cap (12G) are arranged together in the fourth bearing hole (36G), the eighth bearing (247D) and the fifth bearing cap (12H) are arranged together in the fifth bearing hole (36H), and the ninth bearing (247E) and the sixth bearing cap (12J) are arranged together in the sixth bearing hole (36J), and the sixth bearing (247B) and the seventh bearing cap (12D) are arranged together in the seventh bearing hole (36D), and the seventh bearing (247C) and the eighth bearing cap (12E) are arranged together in the eighth bearing hole. (36E) as well as the tenth bearing (247F) and the ninth bearing cover (12F) are arranged together in the ninth bearing hole (36F),and that the output shaft of the motor (5) is connected to the input bevel gear (240) through a second drive opening (19B) formed in a second partition (4B), wherein the input bevel gear (240) meshes with the output bevel gear (244A) in a cross-cutting manner, so that a change in the direction of the rotary motion occurs, the second gear (244B) meshes with the third gear (244C), the fourth gear (244D) meshes with the fifth gear (244E), and the sixth gear (244F) meshes with the rack (35). Rack and pinion guide module with integrated drive in parallel axis configuration (25), comprising a module housing (1), a parallel axis gear unit (33), a parallel drive housing (17C), a parallel gear housing (18C), a first slide (2A), a second slide (2B), a third slide (2C), a fourth slide (2D), a first guide rail (3A), a second guide rail (3B), and a combined support rack (38), characterized in that the rack and pinion guide module in parallel axis configuration (25) differs from the rack and pinion guide module in cross-axis configuration (24) in that the parallel gear housing (18C) is L-shaped and the parallel drive housing (17C) and the parallel gear housing (18C) are separated from each other by an L-shaped third partition (4C), and that the parallel axis gear unit (33) is provided instead of the cross-axis gear unit (32).The parallel-axis gear unit (33) differs from the cross-axis gear unit (32) in that a parallel motor gear (250) meshes in parallel with a first parallel gear (254A), that the output shaft of the motor (5) is connected to the parallel motor gear (250) via a third drive opening (19C) formed in the third partition (4C), and that in the cross-axis rack guide module (24), the motor (5) meshes with the output bevel gear (244A) via an input bevel gear (240), thereby changing the direction of rotation and converting the screw motion into a linear motion, whereas in the parallel-axis rack guide module (25), the motor (5) meshes in parallel with the first parallel gear (254A) via the parallel motor gear (250), and the screw motion is directly converted into a linear motion. becomes., Rack and pinion guide module according to one of claims 1, 7 or 8, characterized in that the first guide rail (3A), the second guide rail (3B) and the combined support rack (38) are always designed as cantilevers when the three modules are extended and retracted, and that connecting holes of the support rack (20) are provided on an upper side of the combined support rack (38), via which, depending on the application scenario, an object to be carried can be connected to the combined support rack (38) via the connecting holes (20). Extension system for a vehicle body with a rack and pinion guide module with integrated drive, characterized in that the system comprises a rack and pinion guide module in a skewed-axis design (23), a cross-axis design (24), or a parallel-axis design (25), a support frame (26), a support box (27), and an extension box (29), that the rack and pinion guide module in a skewed-axis design (23), a cross-axis design (24), or a parallel-axis design (25) is arranged within the support box (27), that base plate fastening openings (21) are provided on an underside of the module housing (1) of the rack and pinion guide module (23, 24, 25), via which the module housing (1) is rigidly connected to a cover plate (261) of the support frame (26), wherein the support frame (26) comprises a cover plate (261) and a base plate. (262) and a web plate (263) includes that the combined support rack (38) is firmly connected to a top of the support box (27),that the rack guide module in a skewed-axis design (23), in a cross-axis design (24) or in a parallel-axis design (25) is arranged parallel to the support box (27) on the two sides associated with a pull-out box (29) below the pull-out box (29) and moves synchronously with it, so that the support box (27) is not visible from the outside, that an elongated slot (28) is provided on an underside of the support box (27), and that when the vehicle is stationary, the pull-out box (29) can be fully extended from an opening in the vehicle body (30), thereby increasing the interior space of the vehicle, and that after retraction, the pull-out box (29) is flush with the outer surface of the vehicle body (30), so that the external appearance of the vehicle is not affected.

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