Ball screw suspension type vehicle box sliding-out mechanism

Abstract

The invention relates to a ball screw suspended type vehicle box sliding-out system which comprises a sliding-out box, a bearing plate, a bearing box, a supporting frame, a combined guide rail assembly and a ball screw type driving assembly. The sliding-out box body is arranged at an opening of the vehicle body, the bearing boxes with the same corresponding structures are arranged below the opposite side walls of the sliding-out box body, the bearing plate is fixed to the bearing boxes, one side of the combined guide rail assembly is fixed to the supporting frame, the other side of the combined guide rail assembly is fixed to the bearing plate, and the ball screw type driving assembly is fixed to the supporting frame and the bearing plate. A long-strip opening is formed in the bottom of the bearing box, and the bearing box slides back and forth at the lower end of the supporting frame through the long-strip opening. The sliding-out and withdrawing of the vehicle box body can be realized, and the use space of the vehicle is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle interior space expansion, and in particular to a ball screw suspended vehicle box slide-out system. Background Art

[0002] Existing vehicles and RVs are equipped with slide-out boxes to increase the internal usable space of the RV. The outer wall of the slide-out box is flush with the outside of the vehicle or trailer during driving. When the vehicle stops, the slide-out chamber slides outward from the opening of the vehicle, thereby increasing the internal usable space of the vehicle.

[0003] Patent CN202111541306.4 discloses an RV expansion mechanism and an RV, in which the sliding mechanism is located under and on both sides of the vehicle body. There is no integrated setting, which occupies a large space, is inconvenient to install, and runs unsteadily.

[0004] Patent US202117408020A discloses a slide-out device arranged on both sides of the slide-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 cost of use.

[0005] In view of the above-mentioned related technologies, the inventor believes that the slide-out mechanism of the vehicle box slide-out system is relatively large, complicated to install, and has high cost. Therefore, it is believed that the slide-out mechanism of the vehicle box slide-out system has the problem of occupying a large space. Summary of the invention

[0006] In order to improve the problem that the sliding-out mechanism of a vehicle slide-out box occupies a large space, the present invention provides a ball screw suspended vehicle box slide-out system, which can increase the usable space of the vehicle and improve the space utilization rate. Since the entire slide-out mechanism in the carrying box is integrated and connected to the bottom plate of the support frame, there is no need to disassemble the lower chassis of the vehicle body, and installation and disassembly are convenient. Only the bottom plate of the support frame needs to be fixed to the vehicle body, and the entire slide-out box can be set at the opening of the vehicle body.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A ball screw suspended vehicle box slide-out system comprises a slide-out box, a bearing box, a support frame, a combined guide rail assembly, a ball screw drive assembly and a load-bearing plate. The slide-out box is arranged at the opening of the vehicle body, one side of the combined guide rail assembly is fixed to the support frame, and the other side is fixed to the load-bearing plate, the load-bearing plate is fixed to the bearing box, the ball screw drive assembly is fixed to the support frame and the load-bearing plate, the combined guide rail assembly, the ball screw drive assembly, the load-bearing plate and part of the support frame (except the bottom plate) are integrated inside the bearing box, the bearing box is symmetrically arranged on both sides below the slide-out box, a long strip opening is arranged at the bottom of the bearing box, and the bearing box slides back and forth at the lower end of the support frame through the long strip opening.

[0009] By adopting the above technical solution, the ball screw drive assembly can drive the combined guide rail assembly to slide back and forth, and then drive the carrying box to slide back and forth, so as to realize the sliding out and retraction of the slide-out box. The combined guide rail assembly, the ball screw drive assembly, the load-bearing plate, and part of the support frame (except the bottom plate) are integrated in the carrying box, which can isolate the influence of the outside world, facilitate installation and disassembly, have a beautiful appearance, and can increase the internal use space of the vehicle. The long strip opening at the bottom of the carrying box slides out and retracts from the lower end of the support frame. The bottom plate supports the entire slide-out box. There is no need to disassemble the vehicle chassis. The bottom plate of the support frame is directly fixed to the vehicle body. The entire slide-out box is suspended at the opening of the vehicle, and the support frame transfers the weight of the slide-out box to the vehicle body.

[0010] Preferably, the support frame comprises an upper plate, a lower plate and a bottom plate, and the bottom plate is fixed on the vehicle body.

[0011] By adopting the above technical solution, the weight borne by the support frame can be transferred to the vehicle body through the bottom plate.

[0012] Preferably, the combined guide rail assembly includes guide rail 1, guide rail 2, slider 1, slider 2, slider 3 and slider 4. The guide rail 1 and the guide rail 2 are fixed to the bearing box in parallel up and down through the load-bearing plate, the slider 1 and the slider 3 are slidably connected to the guide rail 1, the slider 2 and the slider 4 are slidably connected to the guide rail 2, the slider 1 and the slider 3 are fixed to the lower plate, and the slider 2 and the slider 4 are fixed to the upper plate.

[0013] By adopting the above technical solution, the friction of the back-and-forth movement of guide rails one and two is reduced, and the load-bearing plate can be used to drive the carrying box and the slide-out box to slide out and retract. In addition, the weight of the carrying box can be transferred to the guide rail through the load-bearing plate, and the guide rail is on the transfer slider, and then transferred to the support frame.

[0014] Preferably, the guide rail 1 and the guide rail 2 are driven by the fixed slider 1, slider 2, slider 3 and slider 4 to always maintain the cantilever setting when the slide-out box slides out and is retracted.

[0015] By adopting the above technical solution, guide rail one is cantilevered through slider one and slider three, and guide rail two is cantilevered through slider two and slider four to increase the sliding length of the slide-out box and increase the usable space in the car without the need for additional support.

[0016] Preferably, the slider 1 and the slider 2 are flush with each other in vertical direction, the slider 3 and the slider 4 are flush with each other in vertical direction, and the slider 1 and the slider 3 are arranged in parallel with the slider 2 and the slider 4.

[0017] By adopting the above technical solution, when the guide rails 1 and 2 slide back and forth, the force is balanced, the operation is smooth, and the friction is small.

[0018] Preferably, the ball screw drive assembly comprises a motor, a motor frame, a small synchronous pulley, a ball screw, a ball flange nut, a flange nut cover, a bearing 1, a bearing 2, a flange nut sleeve, a large synchronous pulley, a synchronous belt and a nut fixing frame. The motor is fixed to the upper plate through the motor frame, the output shaft of the motor is connected to the small synchronous pulley, the ball screw passes through the ball flange nut, the flange nut cover and the flange nut sleeve are respectively fixed on both sides of the ball flange nut, the large synchronous pulley is fixed on the flange nut sleeve, the small synchronous pulley is synchronously connected with the large synchronous pulley through the synchronous belt, the flange nut cover is provided with a bearing 1, the flange nut sleeve is provided with a bearing 2, the ball flange nut, the flange nut cover, the flange nut sleeve, the bearing 1 and the bearing 2 are fixed to the support frame through the nut fixing frame.

[0019] By adopting the above technical solution, the motor drives the small synchronous pulley to rotate, and the small synchronous pulley uses the synchronous belt to synchronously drive the large synchronous pulley to rotate, thereby driving the ball flange nut to rotate, and the ball flange nut drives the ball screw to convert the spiral motion into linear motion, and then drives the load-bearing box and the load-bearing plate to slide out and retract through guide rails one and two.

[0020] Preferably, the bearing frame 1 and the bearing frame 2 are respectively arranged on both sides of the nut fixing frame to stabilize the bearing 1 and the bearing 2.

[0021] By adopting the above technical solution, the bearing can be guaranteed to operate normally without shaking back and forth.

[0022] Preferably, a screw fixing frame 1 and a screw fixing frame 2 are provided at both ends of the load-bearing plate, and both ends of the ball screw are fixed to the load-bearing plate through the screw fixing frame 1 and the screw fixing frame 2.

[0023] By adopting the above technical solution, the bearing plate supports the ball screw and can ensure that the central axis of the ball screw is always in a straight line. In addition, the rotation of the ball screw can drive the bearing plate 7 to move.

[0024] Preferably, the load-bearing plate, the bearing box and the ball screw are parallel along the length direction.

[0025] By adopting the above technical solution, when the ball drives the load-bearing plate to move, and then drives the load-bearing box to slide back and forth, it can ensure that the force is balanced during the movement, the operation is smooth, and the friction is small.

[0026] Preferably, a detachable inspection panel is provided on the side of the carrying box close to the interior of the carriage.

[0027] By adopting the above technical solution, installation is convenient, and when a fault occurs inside the carrying box, it can be repaired by removing the inspection panel, thereby reducing the maintenance cost.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The combined guide rail assembly, the ball screw drive assembly, the load-bearing plate, and part of the support frame (except the bottom plate) are integrated in the bearing box, which can isolate the influence of the outside world, facilitate installation and disassembly, have a beautiful appearance, and can increase the internal use space of the vehicle.

[0030] 2. Since the entire slide-out mechanism inside the carrying box is integrated and connected to the bottom plate of the support frame, there is no need to disassemble the lower chassis of the vehicle body. The installation and disassembly are convenient. Only the bottom plate of the support frame is fixed to the vehicle body, and the entire slide-out box can be set at the opening of the vehicle body. The support frame transfers the weight of the slide-out box to the vehicle body.

[0031] 3. The inspection panel on the carrying box is removable. When a fault occurs inside the carrying box, it can be repaired by removing the inspection panel, thus reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0033] In the figure: 1 slide-out box; 2 bearing box; 203 inspection plate; 3 support frame; 3a upper plate; 3b lower plate; 3c bottom plate; 30 combined guide rail assembly; 6a guide rail 1; 6b guide rail 2; 8a slider 1; 8b slider 2; 8c slider 3; 8d slider 4; 34 ball screw type drive assembly; 4 ball screw; 13 ball flange nut; 14 flange nut cover; 10a bearing 1; 10b bearing 2; 11 flange nut sleeve; 12 large synchronous pulley; 17 motor frame; 18 motor; 16 small synchronous pulley; 15 synchronous belt; 5 nut fixing frame; 9a bearing frame 1; 9b bearing frame 2; 7 load-bearing plate; 7a screw fixing frame 1; 7b screw fixing frame 2; 9 long strip opening; 25 vehicle body;

[0034] Figure 1 It is an oblique view of the slide-out box sliding out from the opening on the vehicle body in a specific embodiment of the present invention.

[0035] Figure 2 It is an oblique view of the slide-out box being completely retracted from the opening on the vehicle body in a specific embodiment of the present invention.

[0036] Figure 3 It is a front cross-sectional view of a slide-out box in a specific embodiment of the present invention.

[0037] Figure 4 It is a schematic diagram of the slide-out mechanism in a specific implementation manner of the present invention.

[0038] Figure 5 It is an exploded schematic diagram of the slide-out mechanism in a specific implementation manner of the present invention.

[0039] Figure 6 It is a cross-sectional view of the carrying box when the slide-out box body is completely slid out in a specific embodiment of the present invention.

[0040] Figure 7 It is a cross-sectional view of the carrying box when the sliding-out box body is fully retracted in a specific embodiment of the present invention.

[0041] Figure 8 8A is an oblique view of the slide-out box body sliding out; 8B is a side view of the slide-out box body sliding out; 8C is a cross-sectional view of the load-bearing box after the slide-out box body slides out.

[0042] Fig. 9 9A is an oblique view of the slide-out box body being retracted; 9B is a side view of the slide-out box body being retracted; and 9C is a cross-sectional view of the load-bearing box after the slide-out box body is retracted. DETAILED DESCRIPTION

[0043] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0044] Reference Figure 1 , Figure 2 As shown: the slide-out box 1 is arranged at the opening of the vehicle body 25. When the vehicle is stationary, the slide-out box 1 completely slides out from the opening on the vehicle body 25 to increase the usable space inside the vehicle. After the slide-out box 1 is retracted, it is flush with the appearance of the vehicle body 25 and does not affect the overall aesthetic effect.

[0045] Reference Figure 3 , Figure 4 As shown: A ball screw suspended vehicle box slide-out system includes a slide-out box 1, a bearing box 2, a support frame 3, a combined guide rail assembly 30, a ball screw drive assembly 34 and a load-bearing plate 7. The slide-out box 1 is made of aluminum alloy or other materials with relatively light structural rigidity. A corresponding bearing box 2 is provided below the opposite side wall of the slide-out box 1. The two bearing boxes 2 have the same internal structure, are correspondingly arranged, move synchronously, and bear the weight of the slide-out box 1. The combined guide rail assembly 30, the ball screw drive assembly 34, the load-bearing plate 7 and part of the support frame 3 (except the bottom plate) are integrated inside the bearing box 2, which can save space and facilitate quick installation and disassembly.

[0046] Reference Figure 5 , Figure 6 , Figure 7As shown: the combined guide rail assembly 30 includes a guide rail 1 6a, a guide rail 2 6b, a slider 1 8a, a slider 2 8b, a slider 3 8c and a slider 4 8d. The guide rail 1 6a and the guide rail 2 6b are fixed to the bearing box 2 in parallel through the load-bearing plate 7, and the slider 1 8a and the slider 3 8c are slidably connected to the guide rail 1 6a, and the slider 2 8b and the slider 4 8d are slidably connected to the guide rail 2 6b. The support frame 3 includes an upper plate 3a, a lower plate 3b and a bottom plate 3c, the slider 1 8a and the slider 3 8c are fixed to the lower plate 3b, the slider 2 8b and the slider 4 8d are fixed to the upper plate 3a, and the bottom plate 3c is fixed to the vehicle body 25. The slider 1 8a and the slider 2 8b are flush with each other, the slider 3 8c and the slider 4 8d are flush with each other, and the slider 1 8a and the slider 3 8c are arranged in parallel with the slider 2 8b and the slider 4 8d. The guide rail 1 drives the slide-out box 1 through the slider 1 and the slider 3, and the guide rail 2 drives the slide-out box 1 through the slider 2 and the slider 4 to always maintain the cantilever setting when sliding out and retracting.

[0047] The ball screw drive assembly 34 includes a motor 18, a motor frame 17, a small synchronous pulley 16, a ball screw 4, a ball flange nut 13, a flange nut cover 14, a bearing 10a, a bearing 2 10b, a flange nut sleeve 11, a large synchronous pulley 12, a synchronous belt 15 and a nut fixing frame 5. The motor 18 is fixed to the upper plate 3a through the motor frame 17, the output shaft of the motor is connected to the small synchronous pulley 16, the ball screw 4 passes through the ball flange nut 13, the ball flange nut 13 is provided with the large synchronous pulley 12, the small synchronous pulley 16 is synchronously connected with the large synchronous pulley 12 through the synchronous belt 15, the flange nut cover 14 and the flange nut sleeve 11 are respectively fixed on both sides of the ball flange nut 13, the flange nut sleeve 11 is provided with a bearing 10a, the flange nut cover 14 is provided with a bearing 2 10b, the bearing 10a and the bearing 2 10b ensure the rotational movement of the ball flange nut 13, the ball flange nut 13, the flange nut cover 14, the flange nut sleeve 11, the bearing 10a and the bearing 2 10b are fixed to the support frame 3 through the nut fixing frame 5. The bearing frame 1 9a and the bearing frame 2 9b are respectively arranged on both sides of the nut fixing frame 5 to stabilize the bearing 10a and the bearing 2 10b. The two ends of the bearing plate 7 are provided with a screw fixing frame 1 7a and a screw fixing frame 2 7b, and the two ends of the ball screw 4 are fixed to the bearing plate 7 through the screw fixing frame 1 7a and the screw fixing frame 2 7b.

[0048] The carrying box 2 is provided with a removable inspection panel 203 on one side close to the interior of the carriage, and the interior of the carrying box 2 can be installed and inspected by removing the inspection panel 203. A long opening 9 is provided at the bottom of the carrying box 2, and the carrying box 2 slides back and forth on both sides of the support frame 3 through the long opening 9.

[0049] Reference Figure 8 As shown: when the ball screw suspended vehicle slide-out system slides out, the motor 18 drives the small synchronous pulley 16 to rotate, and the small synchronous pulley 16 uses the synchronous belt 15 to synchronously drive the large synchronous pulley 12 to rotate, and then drives the ball flange nut 13 to rotate, and the ball flange nut 13 drives the ball screw 4 to convert the spiral motion into linear motion, and then drives the bearing box 2 and the load-bearing plate 7 to move outward together through the guide rail 1 6a and the guide rail 2 6b. When the slide-out box slides to the set length, the slide-out process ends. The support frame 3 remains stationary. After the slide-out box 1 slides out, the bearing box 2 transfers the weight of the slide-out box 1 to the load-bearing plate 7, and the load-bearing plate 7 is transferred to the slider 1 8a, the slider 2 8b, the slider 3 8c, and the slider 4 8d through the guide rail 1 6a and the guide rail 2 6b, and then transferred to the support frame 3, and the support frame 3 is finally transferred to the vehicle body 25.

[0050] Reference Fig. 9 As shown: when the ball screw suspended vehicle slide-out system is retracted, the motor 18 drives the small synchronous pulley 16 to rotate in the opposite direction, and the small synchronous pulley 16 simultaneously drives the large synchronous pulley 12 to rotate in the opposite direction, thereby driving the ball flange nut 13 to rotate in the opposite direction, and the ball flange nut 13 drives the ball screw 4 to convert the spiral motion into linear motion, and then drives the load-bearing box 2 and the load-bearing plate 7 to move inward together through the guide rail 1 6a and the guide rail 2 6b. When the slide-out box 1 and the vehicle body 25 are flush in appearance, the retraction process is completed.

[0051] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may 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 the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ball screw suspended vehicle box slide-out system, comprising a slide-out box (1), a bearing box (2), a support frame (3), a combined guide rail assembly (30), a ball screw drive assembly (34) and a load-bearing plate (7). The slide-out box (1) is arranged at the opening of the vehicle body (25); one side of the combined guide rail assembly (30) is fixed to the support frame (3) and the other side is fixed to the load-bearing plate (7); the load-bearing plate (7) is fixed to the carrying box (2); the ball screw drive assembly (34) is fixed to the support frame (3) and the load-bearing plate (7); the combined guide rail assembly (30), the ball screw drive assembly (34), the load-bearing plate (7) and part of the support frame (3) (except the bottom plate) are integrated inside the carrying box (2); the carrying box (2) is symmetrically arranged on both sides below the slide-out box (1); a long strip opening (9) is arranged at the bottom of the carrying box (2); the carrying box (2) slides back and forth at the lower end of the support frame (3) through the long strip opening (9).

2. The ball screw suspended vehicle box slide-out system according to claim 2, characterized in that: The support frame (3) comprises an upper plate (3a), a lower plate (3b) and a bottom plate (3c); the bottom plate (3c) is fixed on the vehicle body (25).

3. A ball screw suspended vehicle box slide-out system according to claim 2, characterized in that: The combined guide rail assembly (30) comprises a guide rail 1 (6a), a guide rail 2 (6b), a slider 1 (8a), a slider 2 (8b), a slider 3 (8c) and a slider 4 (8d). The guide rail 1 (6a) and the guide rail 2 (6b) are fixed to the bearing box (2) in parallel vertically through the load-bearing plate (7); the slider 1 (8a) and the slider 3 (8c) are slidably connected to the guide rail 1 (6a); the slider 2 (8b) and the slider 4 (8d) are slidably connected to the guide rail 2 (6b); the slider 1 (8a) and the slider 3 (8c) are fixed to the lower plate (3b); and the slider 2 (8b) and the slider 4 (8d) are fixed to the upper plate (3a).

4. A ball screw suspended vehicle box slide-out system according to claim 3, characterized in that: The guide rail 1 (6a) and the guide rail 2 (6b) drive the slide-out box (1) to always maintain a cantilever setting when sliding out and retracting through the fixed slider 1 (8a), the slider 2 (8b), the slider 3 (8c) and the slider 4 (8d).

5. The ball screw suspended vehicle box slide-out system according to claim 4, characterized in that: The slider 1 (8a) and the slider 2 (8b) are flush with each other vertically, the slider 3 (8c) and the slider 4 (8d) are flush with each other vertically, and the slider 1 (8a) and the slider 3 (8c) are arranged in parallel with the slider 2 (8b) and the slider 4 (8d).

6. The ball screw suspended vehicle box slide-out system according to claim 1, characterized in that: The ball screw drive assembly (34) comprises a motor (18), a motor frame (17), a small synchronous pulley (16), a ball screw (4), a ball flange nut (13), a flange nut cover (14), a first bearing (10a), a second bearing (10b), a flange nut sleeve (11), a large synchronous pulley (12), a synchronous belt (15) and a nut fixing frame (5). The motor (18) is fixed to the upper plate (3a) via the motor frame (17); the output shaft of the motor is connected to the small synchronous pulley (16); the ball screw (4) passes through the ball flange nut (13); the flange nut cover (14) and the flange nut sleeve (11) are respectively fixed to the two sides of the ball flange nut (13); the large synchronous pulley (12) is fixed to the flange nut sleeve (11); the small synchronous pulley (16) and the large synchronous pulley (12) are synchronously connected via the synchronous belt (15); the flange nut cover (14) is provided with a bearing 1 (10a); the flange nut sleeve (11) is provided with a bearing 2 (10b); the ball flange nut (13), the flange nut cover (14), the flange nut sleeve (11), the bearing 1 (10a) and the bearing 2 (10b) are fixed to the support frame (3) via the nut fixing frame (5).

7. The ball screw suspended vehicle box slide-out system according to claim 6, characterized in that: The bearing frame 1 (9a) and the bearing frame 2 (9b) are respectively arranged on both sides of the nut fixing frame (5) to stabilize the bearing 1 (10a) and the bearing 2 (10b).

8. The ball screw suspended vehicle box slide-out system according to claim 7, characterized in that: Screw fixing frame 1 (7a) and screw fixing frame 2 (7b) are provided at both ends of the load-bearing plate (7), and both ends of the ball screw (4) are fixed to the load-bearing plate (7) via the screw fixing frame 1 (7a) and the screw fixing frame 2 (7b).

9. The ball screw suspended vehicle box slide-out system according to claim 6, characterized in that: The load-bearing plate (7), the bearing box (2) and the ball screw (4) are parallel along the length direction.

10. The ball screw suspended vehicle box slide-out system according to claim 1, characterized in that: A detachable inspection panel (203) is provided on one side of the carrying box (2) close to the interior of the carriage.

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