Combined guide rail mechanism and vehicle box sliding-out system thereof

Abstract

The utility model relates to a combined guide rail mechanism and a vehicle sliding-out system.The combined guide rail mechanism comprises a guide rail, a first guider and a second guider, multiple rows of parallel circulating balls are arranged in the guide rail, and the first guider and the second guider do reciprocating infinite circulating linear motion on the guide rail; a bearing object can do high-load and high-precision linear motion along the first guider or the second guider. A vehicle box sliding-out system comprises a combined guide rail mechanism, a driving device, a rack frame, a supporting frame, a bearing box and a sliding-out box, the supporting frame is fixed to a vehicle body, the bearing box slides back and forth at the lower end of the supporting frame through a long-strip-shaped opening, a chassis on the lower portion of the vehicle body does not need to be disassembled, and only the supporting frame needs to be fixed to the vehicle body. And the whole sliding-out box body can be arranged at the opening of the vehicle body. Two-stage stretching can be achieved, the using space of a vehicle is increased, and the device is neat, attractive and convenient to mount and dismount.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical linear guide motion, and particularly to a technical field of vehicle interior space expansion, a combined guide rail mechanism and a vehicle box sliding-out system using the same. Background Art

[0002] Linear guide rails are used in linear reciprocating motion occasions and can bear a certain torque, enabling high-precision linear motion under high loads, with a wide range of application scenarios.

[0003] CN117189777A discloses a linear guide rail. The rolling elements are arranged inside the slider assembly. The rolling elements need to be provided with a positioning and retaining device, are prone to falling off, and require professional installation, thus increasing the usage cost.

[0004] Existing vehicles and caravans are equipped with sliding-out boxes to increase the internal usable space of the caravan. The outer wall of the sliding-out box is flush with the outside of the vehicle or trailer during driving. When the vehicle stops, the sliding-out room is slid outwards from the opening of the vehicle, thereby increasing the internal usable space of the vehicle.

[0005] CN202111541306.4 discloses a caravan expansion mechanism and a caravan. The sliding-out mechanism is located below and on the side of the vehicle body, is not integrally arranged, occupies a large space, is inconvenient to install, and operates unstably.

[0006] US202117408020A discloses a sliding-out device arranged on both sides of the sliding-out box. Due to the complex mechanism used, the telescopic drive device is too high, occupies a large space, is inconvenient to maintain, and increases the usage cost.

[0007] In view of the above related technologies, the inventor believes that currently, traditional linear guide rails have deficiencies, and the existing telescopic mechanisms of vehicle sliding-out boxes are relatively large, complex to install, and costly. Therefore, it is considered that the linear guide rail and the sliding-out system of the vehicle sliding-out box have problems of large space occupation, inconvenient use, and difficult installation. Summary of the Invention

[0008] In order to improve the deficiencies of the linear guide rail slider mechanism and the problems of large space occupation and difficult installation of the sliding-out mechanism of the vehicle sliding-out box, the present invention provides a combined guide rail mechanism and a vehicle sliding-out system using the same. The combined guide rail mechanism is integrally arranged together to increase the internal space of the vehicle. When it is used in the vehicle sliding-out system, the combined guide rail mechanism, the drive device, and part of the support frame are integrally arranged in the bearing box, which can isolate the influence of the outside on the combined guide rail mechanism and the drive device, is convenient for installation and disassembly, has a beautiful appearance, and can increase the internal usable space of the vehicle.

[0009] Since the entire sliding mechanism inside the loading box is integrally connected to the bottom plate of the support frame, there is no need to disassemble the lower chassis of the vehicle body, which is convenient for installation and disassembly. Just fix the bottom plate of the support frame on the vehicle body, and the entire sliding box can be set at the opening of the vehicle body.

[0010] A combined guide rail mechanism provided by the present application and used in a vehicle sliding system adopts the following technical solutions: A combined guide rail mechanism includes a guide rail, a first guide and a second guide. The guide rail is provided with circulating balls inside, one side of the guide rail is slidably connected to the first guide, and the other side of the guide rail is slidably connected to the second guide.

[0011] By adopting the above technical solutions, the combined guide rail mechanism slides parallel on the guide rail through the first guide and the second guide, expanding the use space. The first guide and the second guide make reciprocating infinite cyclic linear motions on the guide rail, so that the loaded object makes high-load and high-precision linear motions along the guide, and the combined guide rail mechanism can achieve two-stage telescoping.

[0012] Preferably, a first guide groove is provided inside the first guide, and first guide slides are provided above and below the first guide groove.

[0013] By adopting the above technical solutions, the guide rail slides on the first guide slide through the first guide groove inside the first guide, which can reduce the sliding friction of the guide rail.

[0014] A lubricating oil nozzle is provided inside the first guide, and a first oil baffle and a second oil baffle are provided at both ends. First oil guide grooves and first lubricating oil pads, second oil guide grooves and second lubricating oil pads are provided above and below the first guide groove.

[0015] By adopting the above technical solutions, the guide rail slides on the first guide slide through the first guide groove inside the first guide, providing lubricating oil for the first guide slide, reducing friction and prolonging the service life of the first guide slide.

[0016] A second guide groove is provided inside the second guide. The second guide groove includes a first end face of the second guide and a second end face of the second guide, and second guide slides are provided above and below the second guide groove.

[0017] By adopting the above technical solutions, the guide rail slides on the second guide slide through the second guide groove inside the second guide, which can reduce the sliding friction of the guide rail.

[0018] A second lubricating oil nozzle is provided inside the second guide; a third oil baffle and a fourth oil baffle are provided at both ends, and third oil guide grooves and third lubricating oil pads, fourth oil guide grooves and fourth lubricating oil pads are provided above and below the second guide groove.

[0019] By adopting the above technical solution, the guide rail slides on the second guide slideway through the second guide groove in the second guide, lubricates the second guide slideway, reduces friction, and extends the service life of the second guide slideway.

[0020] The guide rail includes a first metal plate, a second metal plate, and a third metal plate. Between the first metal plate and the second metal plate, there are multiple rows of parallel first circulating raceways arranged side by side that can accommodate the first circulating balls up and down. Between the second metal plate and the third metal plate, there are multiple rows of parallel second circulating raceways arranged side by side that can accommodate the second circulating balls up and down. The first circulating balls slide evenly in the first circulating raceways, and part of the surface of the first circulating balls can be exposed and slide on the second guide slideway. The second circulating balls slide evenly in the second circulating raceways, and part of the surface of the second circulating balls can be exposed and slide on the first guide slideway. A first fixing hole is provided on the first metal plate, a second fixing hole is provided on the second metal plate, and a third fixing hole is provided on the third metal plate. The first metal plate, the second metal plate, and the third metal plate are clamped and fixed through the first fixing hole, the second fixing hole, and the third fixing hole.

[0021] By adopting the above technical solution, the first circulating balls slide evenly in the first circulating raceways, expose part of the surface of the first circulating balls, and slide on the second guide slideway, which can reduce the sliding friction force. The same applies to the second circulating balls.

[0022] The first circulating raceways and the first guiding lips on the first metal plate and the second metal plate are half shapes corresponding to each other. The first metal plate and the second metal plate together form a complete first circulating raceway and first guiding lip. The diameter of the first circulating balls is smaller than the diameter of the first circulating raceways. The first circulating raceways clamp the first circulating balls, enabling the first circulating balls to circulate and roll in the first circulating raceways. The same applies to the second circulating raceways and the second guiding lips.

[0023] By adopting the above technical solution, the first circulating balls sliding in the first circulating raceways can reduce the friction force, facilitating the telescopic sliding of the combined guide rail mechanism. The same applies to the second circulating balls. And it can enable the guide rail to obtain a uniform load-bearing capacity at any position, avoiding local overload or suspension phenomena, and improving the load-bearing capacity and system stability.

[0024] The first circulating raceways are provided with multiple first oil channels, and the multiple oil channels are correspondingly arranged. They are half shapes on the first metal plate and the second metal plate, and together form a complete first oil channel. The same applies to the second oil channel.

[0025] By adopting the above technical solution, the first circulating balls in the first circulating raceways and the second circulating balls in the second circulating raceways can reduce the friction force when sliding, making it more convenient for the balls to roll and extending the service life of the balls and the circulating raceways.

[0026] One side of the first guide is provided with a baffle fixing hole for fixing the first limit baffle. At one end of the first guide groove away from the baffle fixing hole, there is a bolt control hole for fixing the bolt. A bolt control groove is provided on the third metal plate, which is correspondingly arranged with the control bolt.

[0027] By adopting the above technical solution, when the first guide slides outwards, when the fixing bolt catches the bolt control groove, it drives the guide rail to slide. When the first guide retracts inwards, when the first limit baffle touches the guide rail, it drives the guide rail to retract and slide.

[0028] One end of the first metal plate is provided with a second limit baffle fixing hole for fixing the second limit baffle, and the other end is provided with a third limit baffle fixing hole for fixing the third limit baffle.

[0029] By comprehensively adopting the above technical solution, when the combined guide rail mechanism slides out, after the first guide slides out a certain distance, the fixing bolt on the first guide catches the bolt control groove on the guide rail, driving the guide rail to slide. After sliding a further distance, when the second limit baffle on the guide rail touches the end face of the second guide for the first time, the sliding movement of the combined guide rail mechanism ends. When the combined guide rail mechanism retracts, when the first limit baffle on the first guide touches the other end of the guide rail, driving the guide rail to retract and slide. After sliding a further distance, when the third limit baffle on the guide rail touches the end face of the second guide for the second time, the retracting movement of the combined guide rail mechanism ends.

[0030] A vehicle box sliding-out system includes a combined guide rail mechanism, a driving device, a support frame, a carrying box and a sliding-out box. The combined guide rail mechanism includes a first guide, a guide rail and a second guide. One side of the guide rail is slidably connected to the first guide, and the other side of the guide rail is slidably connected to the second guide. The first guide is fixed on the carrying box, the second guide is fixed on the support frame, the driving device is fixed on the carrying box at the upper part and fixed on the support frame at the lower part. The support frame is fixed on the vehicle body. A long strip opening is provided at the bottom of the carrying box, and the carrying box slides back and forth at the lower end of the support frame through the long strip opening.

[0031] By adopting the above technical solution, the combined guide rail mechanism, the driving device and part of the support frame are integrally arranged in the carrying box, which can isolate the influence of the outside on the combined guide rail mechanism and the driving device, is convenient for installation and disassembly, has a beautiful appearance and can increase the internal use space of the vehicle.

[0032] Preferably, the driving device includes a rack, a driving seat, a motor, a speed reducer, a gear, and a rack frame. The motor is installed on the driving seat, the output shaft of the motor is connected with the speed reducer, the output shaft of the speed reducer is connected with the gear, the motor drives the gear to rotate through the speed reducer, the tooth surface of the gear meshes with the tooth surface of the rack, the driving seat, the motor, the speed reducer, and the gear are fixed on the support frame, the rack is installed on the rack frame, and the rack frame is fixed on the carrying box, converting the rotational motion of the gear into the linear motion of the rack.

[0033] By adopting the above technical solution, the driving device converts the rotational motion of the gear into the linear motion of the rack, driving the sliding-out box to slide out and retract.

[0034] Preferably, the support frame includes a top plate, a vertical plate, and a bottom plate.

[0035] By adopting the above technical solution, the bottom plate of the support frame can bear the weight of the entire sliding-out box and transfer the weight of the entire sliding-out box to the vehicle body. The long opening of the carrying box slides back and forth through the vertical plate of the support frame.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. The first guide and the second guide of the combined guide rail mechanism perform reciprocating infinite cyclic linear motion on the guide rail, enabling the object to be carried to perform high-load and high-precision linear motion along the guide.

[0038] 2. The combined guide rail mechanism can achieve two-stage telescoping, increasing the usable space inside the vehicle.

[0039] 3. Integrating the combined guide rail mechanism, the driving device, and part of the support frame in the carrying box can isolate the influence of the outside world on the combined guide rail mechanism and the driving device, facilitate installation and disassembly, have a beautiful appearance, and can increase the internal usable space of the vehicle.

[0040] 4. Since the entire combined guide rail mechanism inside the carrying box is integrally connected to the support frame, there is no need to disassemble the lower chassis of the vehicle body. The installation is convenient. Just fix the bottom plate of the support frame on the vehicle body, and the entire sliding-out box can be set at the opening of the vehicle body. Brief Description of the Drawings

[0041] Figure 1 In the figures, 1A is a schematic diagram of the fully slid-out structure of the combined guide rail mechanism in the specific embodiment of the present invention, and 1B is a schematic diagram of the retracted structure of the combined guide rail mechanism in the specific embodiment of the present invention.

[0042] Figure 2 It is a schematic diagram of the structure of the first guide in the specific embodiment of the present invention.

[0043] Figure 3 This is a schematic diagram of the structure of the second guide in the specific embodiment of the present invention.

[0044] Figure 4 In it, 4A is the front view of the internal structure of the guide rail in the specific embodiment of the present invention, and 4B is the rear view of the internal structure of the guide rail in the specific embodiment of the present invention.

[0045] Figure 5 In it, 5A is the front view of the overall external part of the guide rail in the specific embodiment of the present invention, and 5B is the rear view of the overall external part of the guide rail in the specific embodiment of the present invention.

[0046] Figure 6 In it, 6A is the schematic diagram of the fully retracted combined guide rail mechanism in the specific embodiment of the present invention, 6B is the schematic diagram of the intermediate process of the sliding out of the combined guide rail mechanism in the specific embodiment of the present invention, and 6C is the schematic diagram of the fully slid out combined guide rail mechanism in the specific embodiment of the present invention.

[0047] Figure 7 In it, 7A is the schematic diagram of the fully slid out combined guide rail mechanism in the specific embodiment of the present invention, 7B is the schematic diagram of the intermediate process of the retraction of the combined guide rail mechanism in the specific embodiment of the present invention, and 7C is the schematic diagram of the fully retracted combined guide rail mechanism in the specific embodiment of the present invention.

[0048] Figure 8 This is the explosion schematic diagram of the lubrication system of the combined guide rail mechanism in the specific embodiment of the present invention.

[0049] Figure 9 This is the schematic diagram of the structure of the vehicle box sliding out system in the specific embodiment of the present invention.

[0050] Figure 10 This is the schematic diagram of the fully slid out vehicle sliding out box in the specific embodiment of the present invention.

[0051] Figure 11 This is the schematic diagram of the fully retracted vehicle sliding out box in the specific embodiment of the present invention.

[0052] Figure 12 This is the explosion schematic diagram of the driving device of the sliding out system in the specific embodiment of the present invention.

[0053] Figure 13 This is the schematic diagram of the structure of the support frame in the specific embodiment of the present invention.

[0054] Figure 14 This is the schematic diagram of the box body structure of the bearing box in the specific embodiment of the present invention.

[0055] Figure 15 This is the front view of the internal structure of the bearing box in the specific embodiment of the present invention.

[0056] Figure 16 This is the front view of the sliding-out box structure in the specific embodiment of the present invention.

[0057] Figure 17 This is the explosion schematic diagram of the vehicle box sliding-out system in the specific embodiment of the present invention.

[0058] Figure 18 In it, 18A is the front cross-sectional view when the sliding-out box is fully slid out in the specific embodiment of the present invention, 18B is the front schematic diagram of the sliding-out system in the specific embodiment of the present invention, and 18C is the rear schematic diagram of the sliding-out system in the specific embodiment of the present invention.

[0059] Figure 19 In it, 19A is the front cross-sectional view when the sliding-out box is fully retracted in the specific embodiment of the present invention, 19B is the front schematic diagram of the sliding-out system when retracted in the specific embodiment of the present invention, and 19C is the rear schematic diagram of the sliding-out system when retracted in the specific embodiment of the present invention.

[0060] Explanation of reference numerals: 1 Sliding-out box; 2 Carrying box; 3 Support frame; 301 Bottom plate; 302 Top plate; 303 Vertical plate; 4 Rack; 5 First guide; 501 First guide groove; 502 First limit baffle fixing hole; 503 First guide slideway; 504 Bolt control hole; 505 First guide assembly hole; 506A First oil baffle; 506B Second oil baffle; 507A First oil guide groove; 507B Second oil guide groove; 508A First lubricating oil pad; 508B Second lubricating oil pad; 509 First lubricating oil nozzle; 6 Guide rail; 601 First metal plate; 602 Second metal plate; 603 Third metal plate; 604A First circulating raceway; 604B Second circulating raceway; 605 Bolt control groove; 606A First fixing hole; 606B Second fixing hole; 606C Third fixing hole; 607A Second limit baffle fixing hole; 607B Third limit baffle fixing hole; 608A First oil passage; 608B Second oil passage; 7 Second guide; 701 Second guide groove; 702 Second guide assembly hole, 703 Second guide slideway; 704A First end face of the second guide; 704B Second end face of the second guide; 706A Third oil baffle; 706B Fourth oil baffle; 707A Third oil guide groove; 707B Fourth oil guide groove; 708A Third lubricating oil pad; 708B Fourth lubricating oil pad; 709 Second lubricating oil nozzle; 8 Gear; 9 Rack frame; 10 Motor; 11 Driving seat; 12 First limit baffle; 13 Reducer; 14A Second limit baffle; 14B Third limit baffle; 15 Bolt; 16A First circulating ball; 16B Second circulating ball; 17A First guiding lip; 17B Second guiding lip; 18 Long strip opening; 19 First guide fixing hole; 20 Rack frame fixing hole; 21 Second guide fixing hole; 22 Bolt mounting hole; 23 Driving device; 24 Combined guide rail mechanism; 25 Vehicle body. Detailed Implementation Modes

[0061] To make the objectives, features, and advantages of the present invention more obvious and understandable, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in this specific embodiment. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0062] Refer to Figure 1 As shown: A combined guide rail mechanism 24 includes a first guide 5, a guide rail 6, and a second guide 7. Figure 1 Figure A is a schematic diagram of the fully deployed combined guide rail mechanism, Figure 1 Figure B is a schematic diagram after the combined guide rail mechanism is retracted. The guide rail 6 is provided with a first circulating ball 16A and a second circulating ball 16B inside. Second limit baffles 14A and third limit baffles 14B are provided at both ends of the guide rail 6. The first guide 5 and the guide rail 6 are slidably connected through the second circulating ball 16B, and the second guide 7 and the guide rail 6 are slidably connected through the first circulating ball 16A. The first guide 5, the guide rail 6, and the second guide 7 together constitute the combined guide rail mechanism 24.

[0063] Refer to Figure 2 As shown: A first guide groove 501 is provided inside the first guide 5. One end of the first guide 5 is provided with a first limit baffle fixing hole 502 for fixing the first limit baffle 12. First guide slides 503 are provided above and below in the first guide groove 501. First oil guide grooves 507A and first lubricating pads 508A, second oil guide grooves 507B and second lubricating pads 508B are correspondingly provided above and below in the first guide slides 503. The first guide groove 501 is provided with a bolt control hole 504 at the end far from the first limit baffle fixing hole 502 for fixing the bolt 15. An assembly hole 505 is provided on the side of the first guide, and a first lubricating nozzle 509 is provided on the top.

[0064] Refer to Figure 3 As shown: A second guide groove 701 is provided inside the second guide 7. The second guide groove 701 includes a first end face 704A and a second end face 704B of the second guide. Second guide slides 703 are provided above and below in the second guide groove 701. An assembly hole 702 is provided on the side of the second guide, and a second lubricating nozzle 709 is provided on the top.

[0065] Refer to Figure 4 and Figure 5As shown in the figure: The guide rail 6 includes a first metal plate 601, a second metal plate 602, and a third metal plate 603. Between the first metal plate 601 and the second metal plate 602, there are two parallel rows of first circulating raceways 604A arranged side by side that can accommodate the first circulating balls 16A. Between the second metal plate 602 and the third metal plate 603, there are two parallel rows of second circulating raceways 604B arranged side by side that can accommodate the second circulating balls 16B. The first circulating raceway 604A and the first guiding lip 17A are both half-shaped and corresponding to each other above the first metal plate 601 and the second metal plate 602, and together they form a complete first circulating raceway 604A and first guiding lip 17A. The diameter of the first circulating ball 16A is smaller than the diameter of the first circulating raceway 604A. The first circulating raceway 604A and the first guiding lip 17A clamp the first circulating ball 16A, enabling the first circulating ball 16A to circulate and roll within the first circulating raceway 604A and the first guiding lip 17A. The first circulating ball 16A slides evenly within the first circulating raceway 604A, and the exposed part of the surface of the first circulating ball 16A slides on the second guiding slideway 703. The second circulating ball 16B, the second circulating raceway 604B, and the second guiding lip 17B are the same.

[0066] The first metal plate 601 is provided with a first fixing hole 606A, the second metal plate 602 is provided with a second fixing hole 606B, and the third metal plate 603 is provided with a third fixing hole 606C. The first metal plate 601, the second metal plate 602, and the third metal plate 603 are clamped and fixedly arranged through the first fixing hole 606A, the second fixing hole 606B, and the third fixing hole 606C, enabling the exposed part of the surface of the first circulating ball 16A and the second circulating ball 16B in the corresponding first circulating raceway 604A and second circulating raceway 604B, facilitating the sliding of the first circulating ball 16A on the second guiding slideway 703 and the sliding of the second circulating ball 16B on the first guiding slideway 503.

[0067] One end of the first metal plate 601 is provided with a second limit baffle fixing hole 607A for fixing the second limit baffle 14A, and the other end is provided with a third limit baffle fixing hole 607B for fixing the third limit baffle 14B. The third metal plate 603 is provided with a bolt control groove 605, which is correspondingly arranged with the bolt 15 on the first guide 5.

[0068] Refer to Figure 6 As shown in FIGS. 6A, 6B, and 6C: The guide rail 6 is slidably connected to the first guide 5 through the second circulating ball 16B between the third metal plate 603 and the second metal plate 602, and is slidably connected to the second guide 7 through the first circulating ball 16A between the first metal plate 601 and the second metal plate 602.

[0069] Refer to Figure 6Figure A is a schematic view of the retraction of the combined guide rail mechanism 24.

[0070] Refer to Figure 6 Figure B shown below: Figure 6 Figure B is a schematic view of the sliding expansion process of the combined guide rail mechanism 24. When the combined guide rail mechanism 24 slides outwards, after the first guide 5 slides a certain distance, when the bolt 15 on the first guide 5 catches the bolt control groove 605 on the third metal plate 603 of the guide rail 6, the first guide 5 drives the guide rail 6 to slide outwards. After sliding a certain distance, when the second limit baffle 14A on the first metal plate 601 of the guide rail 6 touches the end face of the second guide 704A, the sliding-out process ends, realizing two-stage sliding elongation, as shown in Figure 6 Figure C when fully expanded.

[0071] Refer to Figure 7 Figure A shown below: Schematic view of the combined guide rail mechanism 24 when fully expanded.

[0072] Refer to Figure 7 Figure B shown below: When the combined guide rail mechanism 24 retracts inwards, when the first limit baffle 12 on the first guide 5 touches the third metal plate 603 of the guide rail 6, it drives the guide rail 6 to move inwards. When the third limit baffle 14B on the first metal plate 601 of the guide rail 6 touches the end face of the second guide 704B, the retraction process ends, realizing two-stage retraction, as shown in reference to Figure 7 Figure C.

[0073] Refer to Figure 8 shown below: When lubricating the first guide slideway 503, the first circulating ball 16A and the first circulating raceway 604A when the combined guide rail mechanism is stationary, lubricating oil is injected from the first lubricating nozzle 509 on the first guide 5. The lubricating oil flows into the first oil guide groove 507A and the first guide slideway 503, and then the first circulating ball 16A is coated with lubricating oil. The excess oil passes through the first oil passage 608A and then enters the lower first circulating raceway, and the lower first circulating ball is also coated with lubricating oil. The remaining lubricating oil flows into the second oil guide groove 507B. The first oil baffle 506A and the second oil baffle 506B prevent the lubricating oil from overflowing. When the combined guide rail mechanism moves, the lubricating system supplies oil and continuously repeats the above steps for cyclic lubrication to achieve long-term lubrication of the lubricating system. The principle of lubricating the second guide slideway 703, the second circulating ball 16B and the second circulating raceway 604B is the same as the above steps.

[0074] Refer to Figure 9 、 Figure 10 、 Figure 11As shown: A vehicle box sliding-out system includes a combined guide rail mechanism 24, a driving device 23, a support frame 3, a bearing box 2, and a sliding-out box 1. The sliding-out box 1 is made of aluminum alloy or other materials with relatively light structural rigidity. Below the opposite side walls of the sliding-out box 1, there are corresponding bearing boxes 2. The internal structures of the two bearing boxes 2 are the same, are correspondingly arranged, and move synchronously, bearing the weight of the sliding-out box 1. The combined guide rail mechanism 24, the driving device 23, and part of the support frame 3 are integrally arranged inside the bearing box 2, which can save space and facilitate quick installation and disassembly.

[0075] Refer to Figure 12 As shown: The driving device 23 includes a driving seat 11, a motor 10, a speed reducer 13, a gear 8, a rack 4, and a rack frame 9. The motor 10 is installed on the driving seat 11. The output shaft of the motor 10 is connected to a speed reducer 13. A gear 8 is connected to the output shaft of the speed reducer 13. The gear 8 meshes with the rack 4. The rack 4 is fixed on the upper surface of the rack frame 9.

[0076] Refer to Figure 13 As shown: The support frame 3 includes a top plate 302, a vertical plate 303, and a bottom plate 301. A second guide fixed hole 21 is provided on the vertical plate 303.

[0077] Refer to Figure 14 As shown: On the side surface of the bearing box 2, there are a first guide fixed hole 19, a rack frame fixed hole 20, and a bolt installation hole 22. At the bottom, there is a long opening 18.

[0078] Refer to Figure 15 , Figure 16 , Figure 17 As shown, in summary, an assembly hole 505 is further provided on the first guide 5. The first guide 5 is fixed on the bearing box 2 through the assembly hole 505 and the correspondingly arranged fixed hole 19. The rack frame 9 is fixed on the bearing box 2 through the rack frame fixed hole 20. The driving seat 11, the motor 10, the speed reducer 13, and the gear 8 are connected and fixed on the support frame 3. The bolt 15 is fixed on the first guide 5 through the bolt control hole 504. The second guide 7 is fixed on the support frame 3 through the assembly hole 702 and the second guide fixed hole 21. The long opening 18 of the bearing box 2 performs sliding-out and retracting actions through the vertical plate 303 of the support frame 3. The combined guide rail mechanism 24 bears the weight of the bearing box 2 and transfers the weight to the support frame 3. The support frame 3 transfers the weight to the vehicle body 25.

[0079] Refer to Figure 18As shown in FIGS. 18A, 18B, and 18C, when the vehicle body sliding-out system slides out, the gear 8 rotates under the action of the speed reducer 13. Under the action of the gear 8, the rack 4 converts the helical motion into a linear motion. The rack frame 9 pulls the carrier box 2 to move. The carrier box 2 drives the first guide 5 to slide outwards. When the fixing bolt 15 catches the bolt control groove 605, it drives the guide rail 6 to slide. When the second limit baffle 14A touches the end face 704A of the second guide, the sliding-out process ends, realizing two-stage elongation. Figure 18 FIG. B is the front view before the vehicle sliding-out system is fully slid out. Figure 18 FIG. C is the rear view after the vehicle sliding-out system is fully slid out.

[0080] Referring to Figure 19 As shown in FIGS. 19A, 19B, and 19C, when the vehicle body sliding-out system retracts, the gear 8 rotates reversely under the action of the speed reducer 13, driving the rack 4 and the rack frame 9 to pull the carrier box 2. The carrier box 2 drives the first guide 5 to retract inwards. When the first limit baffle 12 touches the guide rail 6 after retracting a certain distance, it drives the guide rail 6 to slide inwards. When the third limit baffle 14B touches the end face 704B of the second guide, the retracting process ends, realizing two-stage retraction. Figure 19 FIG. B is the front view after the vehicle sliding-out system is retracted. Figure 19 FIG. C is the rear view after the vehicle sliding-out system is retracted.

[0081] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combined guide rail mechanism (24), comprising a guide rail (6), a first guide (5) and a second guide (7), characterized in that One side of the guide rail (6) is slidably connected to the first guide (5), and the other side of the guide rail (6) is slidably connected to the second guide (7). The first guide (5) and the second guide (7) perform reciprocating infinite linear motion on the guide rail (6), so that the carrier can perform high-load and high-precision linear motion along the first guide (5) or the second guide (7). The combined guide rail mechanism can achieve two-stage telescopic movement.

2. A combined guide rail mechanism (24) according to claim 1, characterized in that: A first guide groove (501) is provided in the first guide device (5), a first guide slideway (503) is provided above and below the first guide groove (501), a first oil guide groove (507A) and a first lubricating oil pad (508A), a second oil guide groove (507B) and a second lubricating oil pad (508B) are provided above and below the first guide slideway (503) of the first guide device (5), a first oil baffle plate (506A) and a second oil baffle plate (506B) are provided at both ends, and a first lubricating oil nozzle (509) is provided on the first guide device (5).

3. A combined guide rail mechanism (24) according to claim 2, characterized in that: A second guide groove (701) is provided in the second guide (7), the second guide groove (701) comprises a second guide end face 1 (704A) and a second guide end face 2 (704B), a second guide slideway (703) is provided at the upper and lower parts of the second guide groove (701), a third oil guide groove (707A) and a third lubricating oil pad (708A), a fourth oil guide groove (707B) and a fourth lubricating oil pad (708B) are provided at the upper and lower parts of the second guide slideway (703) of the second guide (7), a third oil baffle plate (706A) and a fourth oil baffle plate (706B) are provided at both ends, and a second lubricating oil nozzle (709) is provided in the second guide (7).

4. A combined guide rail mechanism (24) according to claim 3, characterized in that: The guide rail (6) comprises a first metal plate (601), a second metal plate (602) and a third metal plate (603); two first circulation raceways (604A) and a plurality of first oil passages (608A) are arranged between the first metal plate (601) and the second metal plate (602); two second circulation raceways (604B) and a plurality of second oil passages (608B) are arranged between the second metal plate (602) and the third metal plate (603); the first circulation ball (16A) slides evenly on the first circulation raceways (604A) and can leak out a portion of the surface of the first circulation ball (16A); and the second guide raceways (608A) and the second oil passages (608B) are arranged between the second metal plate (602) and the third metal plate (603). 703), the second circulating ball (16B) slides evenly on the second circulating raceway (604B), and a part of the surface of the second circulating ball (16B) can be leaked out, and slides on the first guide slideway (503), the first metal plate (601) is provided with a first fixing hole (606A), the second metal plate (602) is provided with a second fixing hole (606B), and the third metal plate (603) is provided with a third fixing hole (606C), and the first metal plate (601), the second metal plate (602) and the third metal plate (603) are clamped and fixed by the first fixing hole (606A), the second fixing hole (606B) and the third fixing hole (606C).

5. A combined guide rail mechanism (24) according to claim 4, characterized in that: The first circulating raceway (604A) is a half shape corresponding to each other on the first metal plate (601) and the second metal plate (602). The first metal plate (601) and the second metal plate (602) together form a complete first circulating raceway (604A). The diameter of the first circulating ball (16A) is smaller than the diameter of the first circulating raceway (604A). The first circulating raceway (604A) clamps the first circulating ball (16A) so that the first circulating ball (16A) can circulate and roll in the first circulating raceway (604A). The same is true for the second circulating ball (16B).

6. A combined guide rail mechanism (24) according to claim 5, characterized in that: One end of the first metal plate (601) is provided with a second limit baffle fixing hole (607A) for fixing the second limit baffle (14A), and the other end is provided with a third limit baffle fixing hole (607B) for fixing the third limit baffle (14B).

7. The combined guide rail mechanism (24) according to claim 6, characterized in that: A baffle fixing hole (502) is provided on one side of the first guide (5) for fixing the first limit baffle (12); a control bolt hole (504) is provided on the end of the first guide groove (501) away from the baffle fixing hole (502) for fixing the bolt (15); and a bolt control groove (605) is provided on the third metal plate (603) for clamping the bolt (15).

8. The combined guide rail mechanism (24) according to claim 7, characterized in that: The first circulation raceway (604A) is provided with a plurality of first oil passages (608A), and the plurality of first oil passages (608A) are arranged correspondingly, and are half-shaped on the first metal plate (601) and the second metal plate (602), and together form a complete plurality of first oil passages (608A), and the same is true for the second oil passages (608B).

9. A vehicle box slide-out system, comprising a combined guide rail mechanism (24), a drive device (23), a support frame (3), a carrying box (2), and a slide-out box (1), characterized in that The combined guide rail mechanism (24) comprises a first guide (5), a guide rail (6), and a second guide (7); one side of the guide rail (6) is slidably connected to the first guide (5), and the other side of the guide rail (6) is slidably connected to the second guide (7); the first guide (5) is fixed to the carrying box (2), and the second guide (7) is fixed to the support frame (3); the upper side of the driving device (23) is fixed to the carrying box (2), and the lower side is fixed to the support frame (3); the support frame (3) is fixed to the vehicle body (25); the support frame (3) comprises a top plate (302), a vertical plate (303), and a bottom plate (301); a long strip opening (18) is provided at the bottom of the carrying box (2), and the carrying box (2) slides back and forth at the lower end of the support frame (3) through the long strip opening (18).

10. A vehicle box slide-out system according to claim 9, characterized in that: The driving device (23) comprises a rack (4), a driving seat (11), a motor (10), a reducer (13), a gear (8) and a rack frame (9); the motor (10) is mounted on the driving seat (11); the output shaft of the motor (10) is connected to the reducer (13); the output shaft of the reducer (13) is connected to the gear (8); the motor (10) drives the gear (8) to rotate through the reducer (13); the tooth surface of the gear (8) meshes with the tooth surface of the rack (4); the driving seat (11), the motor (10), the reducer (13) and the gear (8) are fixed on the supporting frame (3); the rack (4) is mounted on the rack frame (9); the rack (4) and the gear (8) mesh; the rack frame (9) is fixed on the bearing box (2) to convert the rotational motion of the gear (8) into the linear motion of the rack (4).

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