Composite sliding rail mechanism and application thereof to vehicle sliding-out system

Abstract

The utility model relates to a composite sliding rail mechanism and a vehicle sliding-out system applying the composite sliding rail mechanism, the composite sliding rail mechanism comprises a first sliding combined guide rail, a second sliding combined guide rail and a guider, and the first sliding combined guide rail and the second sliding combined guide rail are installed on the guider in parallel. The vehicle sliding-out system applying the composite sliding rail mechanism comprises the composite sliding rail mechanism, a driving device, a rack frame, a supporting frame, a bearing box and a sliding-out box body, a first sliding combined guide rail is fixed to the supporting frame, a second sliding combined guide rail is fixed to the bearing box, the driving device is fixed to the supporting frame, and the rack frame is fixed to the supporting frame. The supporting frame is fixed to the vehicle body, the bearing boxes are fixed to the two sides of the sliding-out box body, long-strip-shaped openings are formed in the bottoms of the bearing boxes, and the sliding-out box body is arranged at the opening of the vehicle body. Two-stage stretching is achieved, the use space is increased, the cantilever type moving assembly, the driving device and the supporting frame are integrally arranged in the bearing box, neatness and attractiveness are achieved, and loading and unloading are convenient.

Description

Technical Field

[0001] The present application relates to the technical field of slide rail telescoping, and in particular to a composite slide rail mechanism and a vehicle slide-out system using the same. Background Art

[0002] Existing vehicles and recreational vehicles use slide-out compartments to increase the usable space inside the recreational vehicle. The outer wall of the slide-out compartment is flush with the outside of the vehicle or trailer during driving. When the vehicle stops, the slide-out compartment is slid outwards from the opening of the vehicle, thereby increasing the usable space inside the vehicle.

[0003] US20010030437A1 discloses a vehicle slide-out compartment device. In this application, the slide-out support mechanism and the slide-out drive mechanism are placed separately, reducing the usable space of the slide-out compartment and resulting in low space utilization.

[0004] US201615339481A discloses a device. The slide-out mechanism is located below the vehicle body, occupying a large space and being inconvenient to install.

[0005] In addition, for the telescoping of the existing vehicle slide-out compartment, multiple sets of linear guides and sliders are often used in combination. The linear guides and sliders use plastic or other materials to limit the rolling elements, and are installed using an integrated cage. The volume is too large, the design is relatively complex, the installation is inconvenient, it takes up the limited usable space of the recreational vehicle, cannot provide good sealing for the slide-out part of the vehicle, resulting in debris affecting the sliding of the ball bearings, increasing the friction force, and requiring professional maintenance, thus increasing the relevant usage costs.

[0006] In view of the above related technologies, the inventor believes that the telescoping mechanism of the vehicle slide-out compartment is relatively large, complex to install, and costly. Therefore, it is considered that the telescoping mechanism of the vehicle slide-out compartment has the problem of low space utilization. Summary of the Invention

[0007] In order to improve the problem of low space utilization of the telescoping mechanism of the vehicle slide-out compartment, the present invention provides a composite slide rail mechanism and uses it in a vehicle slide-out system. The composite slide rail mechanism is integrally installed below both sides of the compartment, suspending and bearing the weight of the slide-out compartment. When used in a vehicle slide-out system, it can save space, improve space utilization, and is convenient for installation and maintenance.

[0008] A composite slide rail mechanism provided by the present application and used in a vehicle slide-out system adopts the following technical solutions:

[0009] A composite slide rail mechanism includes a guide, a first sliding combined rail, and a second sliding combined rail. The first sliding combined rail and the second sliding combined rail are installed in parallel on the guide.

[0010] By adopting the above technical solution, the composite slide rail mechanism can telescopically extend and retract linearly in parallel, expanding the usable space.

[0011] Preferably, first guide grooves and second guide grooves are respectively arranged on two sides of the guide. First guide slideways are arranged on the upper and lower surfaces of the first guide groove, and second guide slideways are arranged on the upper and lower surfaces of the second guide groove. The first sliding combined guide rail and the first guide slideway are correspondingly arranged, and the second sliding combined guide rail and the second guide slideway are correspondingly arranged.

[0012] By adopting the above technical solution, the first sliding combined guide rail and the second sliding combined guide rail are arranged in the guide slideways of the corresponding guide grooves, which can reduce the friction of the sliding combined guide rail during sliding and facilitate the telescopic sliding of the composite slide rail mechanism.

[0013] Preferably, a first control block and a second control block are fixed on both sides of the first guide groove.

[0014] By adopting the above technical solution, the two control blocks can control the telescopic length of the composite slide rail mechanism.

[0015] Preferably, both the first sliding combined guide rail and the second sliding combined guide rail are composed of three metal plates with different thicknesses. Corresponding first circulating raceways are arranged between every two of the three parallel metal plates of the first sliding combined guide rail. A plurality of balls are arranged in the first circulating raceway, and the balls slide evenly in the first circulating raceway, and part of the surface of the balls can be exposed to slide on the corresponding first guide slideway. The combination of the three metal plates, the first circulating raceway and the balls constitutes the first sliding combined guide rail. The principle of the second sliding combined guide rail is the same as that of the first sliding combined guide rail.

[0016] By adopting the above technical solution, the first sliding combined guide rail made of metal plates with different thicknesses can ensure the connection with the support frame and at the same time leave a sliding gap for the guide. The second sliding combined guide rail made of metal plates with different thicknesses can ensure a sliding gap between the bearing box and the guide. The balls slide evenly in the first circulating raceway, part of the surface of the balls is exposed, and they slide in the guide groove of the corresponding guide, which can reduce the sliding resistance.

[0017] Preferably, the first circulating raceways on the three metal plates are corresponding half shapes to each other. The three parallel metal plates form a complete first circulating raceway between every two of them. The diameter of the balls is smaller than the diameter of the first circulating raceway, and the first circulating raceway clamps the balls, enabling the balls to circulate and roll in the first circulating raceway.

[0018] By adopting the above technical solution, the sliding of the ball in the first circulating raceway can reduce the frictional force, facilitate the telescopic sliding of the composite slide rail mechanism, and enable the first sliding combined guide rail and the second sliding combined guide rail to obtain uniform load-bearing capacity at any position, avoiding local overload or suspension phenomena, and improving the load-bearing capacity and the stability of the system.

[0019] Preferably, a vehicle sliding-out system includes a composite slide rail mechanism, a driving device, a support frame, a bearing box, and a sliding-out box body. The composite slide rail mechanism includes a first sliding combined guide rail, a second sliding combined guide rail, and a guide. The first sliding combined guide rail is fixed on the support frame, the second sliding combined guide rail is fixed on the bearing box, the driving device is fixed on the support frame, the support frame is fixed on the vehicle body, the bearing box is fixed on both sides of the sliding-out box body, a long strip opening is provided at the bottom of the bearing box, and the sliding-out box body is arranged at the opening of the vehicle body.

[0020] By adopting the above technical solution, the composite slide rail mechanism, the driving device, and part of the support frame are integrally arranged in the bearing box, which can isolate the influence of the outside world on the composite slide rail mechanism and the driving device, facilitate installation and disassembly, have a beautiful appearance, and can increase the internal use space of the vehicle.

[0021] Preferably, a long strip opening is provided at the lower part of the bearing box, and the bearing box passes through from below the support frame through the long strip opening.

[0022] By adopting the above technical solution, it is convenient for the sliding-out box body to slide out and can save space at the same time.

[0023] Preferably, the driving device includes a rack, a driving seat, a motor, a speed reducer, a gear, and a rack frame. The rack is installed on the 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, and the speed reducer are fixed on the support frame, the rack is installed on the rack frame, and the rack frame is fixed on the bearing box, converting the rotational motion of the gear into a linear motion of the rack.

[0024] By adopting the above technical solution, the driving device converts the rotational motion of the gear into a linear motion of the rack, driving the sliding-out box body to slide out and retract.

[0025] Preferably, the rack frame is fixed on the bearing box, and first limit baffles and second limit baffles are arranged at both ends of the rack frame. The first limit baffle is correspondingly arranged with the first limit block, and the second limit baffle is correspondingly arranged with the second limit block.

[0026] By adopting the above technical solution, when the sliding-out box slides out, the first limit baffle cooperates with the first limit block to drive the guide to slide out; when the sliding-out box retracts, the second limit baffle cooperates with the second limit block to drive the guide to retract.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The first sliding combined guide rail and the second sliding combined guide rail are connected with the guide in a cooperative manner to form a composite sliding rail mechanism. The composite sliding rail mechanism is integrally arranged in two corresponding identical bearing boxes of the vehicle sliding-out box, which can achieve two-stage telescoping, increase the vehicle use space, save space, and facilitate quick installation and disassembly.

[0029] 2. According to the requirements of different application scenarios, the lengths of the first sliding combined guide rail, the second sliding combined guide rail, and the guide can be adjusted.

[0030] 3. The three metal plates forming the sliding combined guide rail clamp the balls, which facilitates the limitation of the balls on the circulating raceway and prevents the balls from falling.

[0031] 4. The balls in the first circulating raceway roll in a cycle, enabling the first sliding combined guide rail and the second sliding combined guide rail to obtain uniform load-bearing capacity at any position, improving the load-bearing capacity and stability of the vehicle sliding-out system. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic structural diagram of the composite sliding rail mechanism in the specific embodiment of the present invention.

[0033] Figure 2 It is a front view of the composite sliding rail mechanism in the specific embodiment of the present invention.

[0034] Figure 3 It is a schematic structural diagram of the guide in the specific embodiment of the present invention.

[0035] Figure 4 It is a schematic structural diagram of the first sliding combined guide rail in the specific embodiment of the present invention.

[0036] Figure 5 It is a schematic internal structure diagram of the first sliding combined guide rail in the specific embodiment of the present invention.

[0037] Figure 6 It is a cross-sectional view of the first sliding combined guide rail in the specific embodiment of the present invention.

[0038] Figure 7 It is a schematic structural diagram of the second sliding combined guide rail in the specific embodiment of the present invention.

[0039] Figure 8Schematic diagram of the internal structure of the second sliding combined guide rail in the specific embodiment of the present invention.

[0040] Figure 9 Side view of the vehicle body in the specific embodiment of the present invention.

[0041] Figure 10 Schematic diagram of the vehicle body structure when the sliding box is fully slid out in the specific embodiment of the present invention.

[0042] Figure 11 Cross-sectional view of the vehicle body when the sliding box is fully slid out in the specific embodiment of the present invention.

[0043] Figure 12 Cross-sectional view of the vehicle body when the sliding box is fully retracted in the specific embodiment of the present invention.

[0044] Figure 13 Front view of the sliding box structure in the specific embodiment of the present invention.

[0045] Figure 14 Schematic diagram of the box structure of the carrying box in the specific embodiment of the present invention.

[0046] Figure 15 Schematic diagram of the support frame structure in the specific embodiment of the present invention.

[0047] Figure 16 Front view of the carrying box in the specific embodiment of the present invention.

[0048] Figure 17 Explosion schematic diagram of the driving device in the specific embodiment of the present invention.

[0049] Figure 18 Schematic diagram of the internal structure of the carrying box in the specific embodiment of the present invention.

[0050] Figure 19 Explosion schematic diagram of the composite sliding rail mechanism in the specific embodiment of the present invention.

[0051] Figure 20 Explosion schematic diagram of the vehicle sliding system in the specific embodiment of the present invention.

[0052] Figure 21 Perspective view and cross-sectional view of the fully slid-out internal structures of the sliding box and the carrying box, namely 21A, 21B, and 21C, in the specific embodiment of the present invention.

[0053] Figure 22 Perspective view and cross-sectional view of the fully retracted internal structures of the sliding box and the carrying box, namely 22A, 22B, and 22C, in the specific embodiment of the present invention.

[0054] Description of the reference numerals: 1 Sliding-out box body; 2 Carrying box; 3 Support frame; 301 Support bottom plate; 302 Support top plate; 303 Support vertical plate; 4 Rack; 5 Guide; 501 First guide groove; 502 Second guide groove; 503A First guide slideway; 503B Second guide slideway; 504A First control block; 504B Second control block; 6 First sliding combined guide rail; 601 First thick metal plate; 602 First medium metal plate; 603 First thin metal plate; 604 First circulating raceway; 605 First mounting hole; 606 First connecting threaded hole; 607 First connecting through hole; 7 Second sliding combined guide rail; 701 Second thin metal plate; 702 Second medium metal plate; 703 Second thick metal plate; 704 Second circulating raceway; 705 Second mounting hole; 706 Second connecting threaded hole; 707 Second connecting through hole; 8 Gear; 9 Rack frame; 10 Motor; 11 Driving seat; 12A First limit stop; 12B Second limit stop; 13 Reducer; 14A First limit baffle; 14B Second limit baffle; 15 Vehicle body; 16 Ball; 17 First guiding lip; 18 Long strip opening; 19 First fixing hole; 20 Second fixing hole; 21 Third fixing hole; 22 Second guiding lip; 23 Driving device. Detailed implementation mode

[0055] The following will further elaborate on this application in conjunction with the attached Figures 1-22 drawings.

[0056] Refer to Figure 1 , 2 , 3, a composite slide rail mechanism: including a first sliding combined guide rail 6, a second sliding combined guide rail 7 and a guide 5. The two sides of the guide 5 are respectively provided with a first guide groove 501 and a second guide groove 502. The upper and lower sides of the first guide groove 501 are provided with a first guide slideway 503A, and the upper and lower sides of the second guide groove 502 are provided with a second guide slideway 503B. The first sliding combined guide rail 6 and the first guide slideway 503A are correspondingly arranged, and the second sliding combined guide rail 7 and the second guide slideway 503B are correspondingly arranged. The first sliding combined guide rail 6 and the second sliding combined guide rail 7 not only have the function of a guide rail but also the function of a slider, and also have the use of carrying the weight of the cantilever, which is a composite guide rail. The guide 5 not only has the function of a connecting plate but also the function of the telescopic sliding of the slider, and also has the use of carrying the weight for guiding, which is a composite guide. The guide 5, the first sliding combined guide rail 6 and the second sliding combined guide rail 7 are combined into a composite slide rail mechanism. The two sides of the first guide groove 501 are installed with a first control block 504A and a second control block 504B, and the first control block 504A and the second control block 504B can effectively control the telescopic length of the composite slide rail mechanism.

[0057] Refer to Figure 4 , 5, 6. The first sliding combined guide rail 6 is composed of three metal plates with different thicknesses, namely the first thick metal plate 601, the first middle metal plate 602, and the first thin metal plate 603. Between the three metal plates, there are two first circulating raceways 604 for accommodating the balls 16 up and down. The two first circulating raceways 604 are symmetric up and down, have the same specifications, and are parallel to each other. The first circulating raceway 604 and the first guiding lip 17 are each half-shaped and corresponding on the three metal plates. The three metal plates are combined to form a complete first circulating raceway 604 and the first guiding lip 17. On the side surfaces of the three metal plates, there are first connecting threaded holes 606 and first connecting through holes 607 for clamping the balls 16. The diameter of the balls 16 is smaller than the diameter of the first circulating raceway 604. The balls 16 slide evenly in the first circulating raceway 604, and the clamping and fixing of the three metal plates are set in such a way that exactly the part of the surface of the balls 16 can leak out in the upper and lower first circulating raceways 604, facilitating the sliding of the balls 16 in the first guiding groove 501. The combination of the three metal plates, the first circulating raceway 604, and the circulating balls 16 forms two upper and lower rows of parallel respective circulating systems, finally forming the first sliding combined guide rail 6.

[0058] Refer to Figure 7 , 8 , the second sliding combined guide rail 7 is longer than the first sliding combined guide rail 6, and the number of raceways and balls is also more, but the principle is the same. It includes the second thin metal plate 701, the second middle metal plate 702, and the second thick metal plate 703. Between the three metal plates, there are three columns of second circulating raceways 704 for accommodating the balls 16 up and down. The second circulating raceway 704 and the second guiding lip 22 are each half-shaped on the three metal plates. The three metal plates are combined to form a complete second circulating raceway 704 and the second guiding lip 22. On the side surfaces of the three metal plates, there are second connecting threaded holes 706 and second connecting through holes 707 for clamping and fixing the balls 16. The balls 16 slide evenly in the second circulating raceway 704, and the clamping and fixing of the three metal plates are set in such a way that exactly the part of the surface of the balls 16 can leak out in the upper and lower second circulating raceways 704, facilitating the sliding of the balls 16 in the second guiding groove 502 of the guide 5. The combination of the three metal plates and the circulating balls 16 forms two upper and lower rows of three columns of parallel respective circulating systems, finally forming the second sliding combined guide rail 7.

[0059] Refer to Figures 9-17, A vehicle sliding-out system, comprising a composite slide rail mechanism, a driving device 23, a support frame 3, a bearing box 2 and a sliding-out box body 1. The side of the first sliding combined guide rail 6 is fixed on the support frame 3, and the second sliding combined guide rail 7 is fixed on the bearing box 2. The weight of the bearing box 2 is applied to the guide 5 through the second sliding combined guide rail 7, and the force received by the guide 5 is applied to the support frame 3 through the first sliding combined guide rail 6, so as to apply the gravity of the entire sliding-out box body 1 to the support frame 3. The lower part of the support frame 3 is fixed on the vehicle body 15. The support frame 3 is arranged in an I shape, including a support bottom plate 301, a support top plate 302 and a support vertical plate 303. The first sliding combined guide rail 6 is connected and fixed to the support frame 3 through a third fixing hole 21. The support frame 3 stably supports the sliding-out box body 1 and the bearing box 2. A long strip opening 18 is arranged along the length direction under the bearing box 2, which is convenient for the sliding-out box body 1 to slide out. The long strip opening 18 at the lower part of the bearing box 2 passes through the support vertical plate 303. A first fixing hole 19 is arranged on the side of the bearing box 2 for fixing with the second sliding combined guide rail 7.

[0060] Refer to Figure 17 , 18 As shown in the figure, a driving device 23 is connected to the upper surface of the support frame 3, including a driving seat 11. The driving seat 11 is arranged in an L shape. The horizontal section of the driving seat 11 is fixed on the upper surface of the support frame 3. A motor 10 and a speed reducer 13 are connected to the driving seat 11. The output shaft of the motor 10 is connected to the speed reducer 13. A gear 8 is connected to the output shaft of the speed reducer 13. The tooth surface of the gear 8 meshes with the tooth surface of a rack 4. The rack 4 is fixed on the upper surface of a rack frame 9. The rack frame 9 is fixed on the bearing box 2 through a second fixing hole 20 arranged on the bearing box. The rotational movement of the gear 8 is converted into the linear movement of the rack 4. The rack 4 controls the rack frame 9 to drive the bearing box 2 to move. The internal structure when the bearing box 2 slides out is as Figure 18 shown in the figure.

[0061] Refer to Figure 19 , 20As shown, threaded through holes 605 are provided at both ends of the first sliding combined guide rail 6, and it is fixed to the support frame 3 through the third fixing hole 21 and remains stationary all the time. The first thick metal plate 601 is thickened to connect with the support frame 3 and at the same time leave a sliding gap for the guide 5 to avoid interference between the support frame 3 and the side surface of the guide 5. The first control block 504A prevents the guide 5 from slipping off; threaded through holes 705 are provided at both ends and in the middle of the second sliding combined guide rail 7 and are connected to the first fixing hole 19 of the bearing box 2. The second thick metal plate 703 is thickened to leave a sliding gap for the bearing box 2 and the guide 5 to facilitate the back-and-forth sliding of the bearing box 2; a first limit stop 12A and a second limit stop 12B are provided on the guide 5, and first limit baffles 14A and second limit baffles 14B are provided at both ends of the lower surface of the rack frame 9. The first limit stop 12A and the first limit baffle 14A are correspondingly arranged, and the second limit stop 12B and the second limit baffle 14B are correspondingly arranged. When the slide rail mechanism expands and contracts, it drives the guide 5 to slide back and forth.

[0062] Referring to Figure 21 A, 21B, 21C, When the sliding-out box body 1 slides out, the side surfaces of the rack frame 9 and the second sliding combined guide rail 7 are both fixed to the inner side wall of the bearing box 2. Under the action of the gear 8, the rack 4 converts the spiral motion into a linear motion. The rack frame 9 pulls the bearing box 2 to move, and the bearing box 2 drives the second sliding combined guide rail 7 to slide. When the first limit baffle 14A touches the first limit stop 12A, it drives the guide 5 to slide. When the first control block 504A touches one side of the first sliding combined guide rail 6, the movement stops and the box body slides out completely.

[0063] Referring to Figure 22 A, 22B, 22C, When the sliding-out box body 1 retracts, the gear 8 rotates reversely under the action of the reducer 13, driving the rack 4 and the rack frame 9 to pull the bearing box 2. The bearing box 2 drives the second sliding combined guide rail 7 to slide back. When the second sliding combined guide rail 7 slides, when the second limit baffle 14B touches the second limit stop 12B, it drives the guide 5 to slide. When the second control block 504B touches the other side of the first sliding combined guide rail 6, the movement stops and the box body retracts completely.

[0064] 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 composite slide rail mechanism, characterized in that: The mechanism comprises a guide (5), a first sliding combined guide rail (6), and a second sliding combined guide rail (7); the first sliding combined guide rail (6) and the second sliding combined guide rail (7) are mounted in parallel on the guide (5).

2. A composite slide rail mechanism according to claim 1, characterized in that: The two side surfaces of the guide (5) are respectively provided with a first guide groove (501) and a second guide groove (502); the first guide groove (501) is provided with a first guide slideway (503A) at the top and bottom, and the second guide groove (502) is provided with a second guide slideway (503B) at the top and bottom; the first sliding combined guide rail (6) and the first guide slideway (503A) are provided correspondingly; and the second sliding combined guide rail (7) and the second guide slideway (503B) are provided correspondingly.

3. A composite slide rail mechanism according to claim 2, characterized in that: A first control block (504A) and a second control block (504B) are fixed on both sides of the first guide groove (501).

4. A composite slide rail mechanism according to claim 3, characterized in that: The first sliding combined guide rail (6) comprises three metal plates of different thicknesses, and corresponding first circulating raceways (604) are arranged between each of the three parallel metal plates. A plurality of balls (16) are arranged in the first circulating raceway (604). The balls (16) slide evenly on the first circulating raceway (604), and part of the surface of the balls (16) can be exposed to slide on the corresponding first guide slideway (503A). The combination of the three metal plates, the first circulating raceway (604) and the balls (16) constitutes the first sliding combined guide rail (6). The principle of the second sliding combined guide rail (7) is the same as that of the first sliding combined guide rail (6).

5. A composite slide rail mechanism according to claim 4, characterized in that: The first circulation raceway (604) is a half shape corresponding to each other on the three metal plates, and the three parallel metal plates form a complete first circulation raceway (604). The diameter of the ball (16) is smaller than the diameter of the first circulation raceway (604). The first circulation raceway (604) clamps the ball (16) so that the ball (16) can circulate and roll in the first circulation raceway (604).

6. A vehicle slide-out system using a composite slide rail mechanism, characterized in that: The system comprises a composite slide rail mechanism, a driving device (23), a support frame (3), a carrying box (2) and a slide-out box body (1); the composite slide rail mechanism comprises a first sliding combined guide rail (6), a second sliding combined guide rail (7) and a guide (5); the first sliding combined guide rail (6) is fixed on the support frame (3); the second sliding combined guide rail (7) is fixed on the carrying box (2); the driving device (23) is fixed on the support frame (3); the support frame (3) is fixed on a vehicle body (15); the carrying box (2) is fixed on both sides of the slide-out box body (1); a long strip opening (18) is provided at the bottom of the carrying box (2); and the slide-out box body (1) is provided at the opening of the vehicle body (15).

7. The vehicle slide-out system using a composite slide rail mechanism according to claim 6, characterized in that: The lower part of the carrying box (2) is provided with a long opening (18), and the carrying box (2) passes through the bottom of the support frame (3) through the long opening (18).

8. The vehicle slide-out system using a composite slide rail mechanism according to claim 6, characterized in that: A first limit stopper (12A) and a second limit stopper (12B) are provided above the guide (5).

9. The vehicle slide-out system using a composite slide rail mechanism according to claim 8, 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 via 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) and the reducer (13) are fixed on the supporting frame (3); the rack (4) is mounted on the rack frame (9); 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).

10. The vehicle slide-out system using a composite slide rail mechanism according to claim 9, characterized in that: A first limit baffle (14A) and a second limit baffle (14B) are provided at both ends of the rack frame (9); the first limit baffle (14A) is provided correspondingly to the first limit baffle block (12A); and the second limit baffle (14B) is provided correspondingly to the second limit baffle block (12B).

Images