Expanding carriage with leveling component

Abstract

The utility model discloses an expansion compartment with a leveling component, which comprises a compartment body and an expansion bin, the expansion bin is driven by a horizontal pushing mechanism to retract into or extend out of the compartment body, and a compartment bottom plate of the compartment body and an expansion bin bottom plate of the expansion bin are positioned on the same horizontal plane; a leveling component is arranged below the bottom plate of the expansion bin and comprises a connecting plate and a vertical pushing mechanism which are stacked up and down; when the expansion bin is in a contraction state, the connecting plate and the vertical pushing mechanism are contracted and hidden below the expansion bin, and the internal space of the carriage is not occupied; and in the extension state of the extension bin, the connecting plate is lifted to connect the carriage bottom plate and the extension bin bottom plate, a flat floor is provided, and the use experience of the motor home is improved.

Description

Technical Field

[0001] The utility model relates to vehicle equipment, in particular to an expandable carriage with a flattening member. Background Art

[0002] Modern people advocate freedom and being close to nature, and like to drive recreational vehicles to travel around. The existing recreational vehicles are limited by their volume, and the activity space inside the vehicle is small, bringing many inconveniences and regrets to users.

[0003] To solve the problem of the narrow space in the carriage, many recreational vehicles are equipped with expandable compartments. When driving, the expandable compartment is retracted into the carriage, and when reaching the destination, the expandable compartment is extended to expand the space inside the vehicle.

[0004] However, in the existing solutions, since the expandable compartment can be retracted into the carriage, the bottom plate of the expandable compartment is higher than the bottom plate of the carriage. When the expandable compartment is retracted into or extended out of the carriage, the bottom plate of the expandable compartment overlaps on the bottom plate of the carriage, and there is always a height difference. When people walk inside the carriage, they are easily tripped by the bottom plate of the expandable compartment.

[0005] Therefore, eliminating the height difference between the bottom plate of the expandable compartment and the bottom plate of the carriage and providing a flat carriage floor for people is a technical problem that the industry urgently needs to solve. Summary of the Utility Model

[0006] In order to solve the above-mentioned defects existing in the prior art, the utility model provides an expandable carriage with a flattening member.

[0007] The technical solution adopted by the utility model is to design an expandable carriage with a flattening member, which includes a carriage body and an expandable compartment. The expandable compartment is retracted into or extended out of the carriage body under the drive of a horizontal pushing mechanism. The carriage bottom plate of the carriage body and the expandable compartment bottom plate of the expandable compartment are located on the same horizontal plane. A flattening member is provided under the expandable compartment bottom plate. The flattening member includes a connecting plate and a vertical pushing mechanism that are stacked up and down. In the retracted state of the expandable compartment, the vertical pushing mechanism pulls the connecting plate down and retracts it under the expandable compartment bottom plate. The expandable compartment is retracted into the carriage body, and the carriage bottom plate and the expandable compartment bottom plate are butted together. In the extended state of the expandable compartment, the expandable compartment extends out of the carriage body, the carriage bottom plate and the expandable compartment bottom plate are separated, the vertical pushing mechanism lifts the connecting plate up and connects the carriage bottom plate and the expandable compartment bottom plate. The connecting plate, the carriage bottom plate and the expandable compartment bottom plate are located on the same horizontal plane.

[0008] The car body includes a car side wall, a car top plate, and the car bottom plate. The extension compartment includes two extension compartment side walls, an extension compartment top plate, an extension compartment outer side wall, and the extension compartment bottom plate. When the extension compartment extends out of the car body, the extension compartment side walls, the extension compartment top plate, the extension compartment outer side wall, and the extension compartment bottom plate are all exposed outside the car body. When the extension compartment retracts into the car body, the extension compartment side walls, the extension compartment top plate, and the extension compartment bottom plate all retract into the car body, and the extension compartment outer side wall remains exposed outside the car body.

[0009] The car body is installed on the vehicle chassis. The horizontal pushing mechanism includes two linear guide rails and two push rods, which are both installed between the extension compartment bottom plate and the vehicle chassis and are symmetrically distributed parallel to each other on the left and right sides. One end of the push rod is installed at the tail of the vehicle chassis, and the other end of the push rod is fixed to the bottom of the extension compartment bottom plate. The extension compartment moves back and forth along the linear guide rails under the drive of the push rods, retracting into or extending out of the car body.

[0010] The vertical pushing mechanism includes a bottom frame, a top frame, and a scissor assembly. The bottom frame is installed on the vehicle chassis, the top frame is installed on the lower surface of the connecting plate, and the scissor assembly includes two sets, which are installed side by side between the bottom frame and the top frame. In the retracted state of the extension compartment, the scissor assembly pulls the connecting plate down. In the extended state of the extension compartment, the scissor assembly lifts the connecting plate up.

[0011] The scissor assembly includes a support rod, two outer fork arms, two inner fork arms, an outer fork arm upper connecting rod, an inner fork arm upper connecting rod, an inner fork arm lower connecting rod, and a rotating shaft. The outer fork arms and the inner fork arms are arranged crosswise, and the middle parts of the outer fork arms and the inner fork arms are rotationally connected through the rotating shaft. The bottom end of the outer fork arm is hinged to the bottom frame, and the top end of the outer fork arm is slidably connected to the top frame. The top end of the inner fork arm is hinged to the top frame, and the bottom end of the inner fork arm is slidably connected to the bottom frame. The upper sections of the two outer fork arms are fixedly connected through the outer fork arm upper connecting rod, the upper sections of the two inner fork arms are fixedly connected through the inner fork arm upper connecting rod, and the lower sections of the two inner fork arms are fixedly connected through the inner fork arm lower connecting rod. The upper end of the support rod is hinged to the inner fork arm upper connecting rod, and the lower end of the support rod is hinged to the bottom frame. In the retracted state of the extension compartment, the support rod contracts to pull the top frame and the connecting plate down. In the extended state of the extension compartment, the support rod extends to lift the top frame and the connecting plate up.

[0012] The scissor assembly further includes two upper chute seats horizontally installed on the top frame and two lower chute seats horizontally installed on the bottom frame. A pulley is fixed at the top end of the outer fork arm, and this pulley is fixed in the upper chute seat, so that the top end of the outer fork arm can move horizontally back and forth along the upper chute seat. A pulley is fixed at the bottom end of the inner fork arm, and this pulley is fixed in the lower chute seat, so that the bottom end of the inner fork arm can move horizontally back and forth along the upper chute seat.

[0013] The bottom frame includes two bottom frame cross beams and two bottom frame longitudinal beams. The two bottom frame cross beams and the two bottom frame longitudinal beams enclose a rectangular frame. In the middle of the rectangular frame, there is also a bottom frame middle longitudinal beam parallel to the bottom frame longitudinal beams. The bottom end of the outer fork arm is hinged to the bottom frame longitudinal beam. The lower chute seat is installed on the inner side wall of the bottom frame cross beam. The lower end of the support rod is hinged to the bottom frame middle longitudinal beam. The top frame includes two top frame cross beams and two top frame longitudinal beams. The two top frame cross beams and the two top frame longitudinal beams enclose a rectangular frame. In the middle of the rectangular frame, there is also a top frame middle longitudinal beam parallel to the top frame longitudinal beams. The top end of the inner fork arm is hinged to the top frame longitudinal beam. The upper chute seat is installed on the inner side wall of the top frame cross beam. The upper end of the support rod is hinged to the top frame middle longitudinal beam.

[0014] The expansion compartment can be installed on the side wall or the tail side wall of the carriage body.

[0015] At the ends of the side wall and the top plate of the expansion compartment facing the inside of the carriage body, there is a raised curled edge. On the side of the curled edge facing the carriage side wall, there is a waterproof rubber strip. Around the outer side wall, there is a raised edge. On the side of the raised edge facing the carriage side wall or on the side of the carriage side wall facing the raised edge, there is a waterproof rubber strip.

[0016] On the carriage side wall where the expansion compartment is installed, there is a window. Around the four sides of the window, there is an avoidance step for accommodating the expansion compartment. When the expansion compartment retracts into the carriage body, the outer side wall of the expansion compartment is embedded in the avoidance step, making the outer side wall of the expansion compartment flush with the carriage side wall.

[0017] The beneficial effects of the technical solution provided by the present utility model are:

[0018] The present utility model provides an expandable carriage with a leveling member. In the retracted state of the expansion compartment, the connecting plate and the vertical pushing mechanism retract and hide under the expansion compartment, without occupying the internal space of the carriage. In the extended state of the expansion compartment, the connecting plate rises to connect the carriage floor and the expansion compartment floor, providing a flat floor and improving the use experience of the RV. Description of the Drawings

[0019] The following will describe the present utility model in detail in conjunction with the embodiments and the drawings, where:

[0020] Figure 1 is the side cross-sectional view after the expansion compartment extends out of the carriage body;

[0021] Figure 2 is the side cross-sectional view after the expansion compartment retracts into the carriage body;

[0022] Figure 3 is the three-dimensional view after the expansion compartment extends out of the carriage body;

[0023] Figure 4 It is a three-dimensional view after the expansion compartment retracts into the carriage body;

[0024] Figure 5 It is a three-dimensional view supported by the vertical pushing mechanism;

[0025] Figure 6 It is a three-dimensional view of the contraction of the vertical pushing mechanism;

[0026] Figure 7 It is an enlarged view of the top plate of the expansion compartment;

[0027] Explanation of the reference numerals in the drawings:

[0028] Carriage body (1), carriage bottom plate (1a), carriage side wall (1b), carriage top plate (1c), expansion compartment (2), expansion compartment bottom plate (2a), expansion compartment side wall (2b), expansion compartment top plate (2c), outer side wall of the expansion compartment (2d), connecting plate (3), linear guide rail (4), push rod (5), bottom frame (6), bottom frame cross beam (6a), bottom frame longitudinal beam (6b), middle longitudinal beam of the bottom frame (6c), top frame (7), top frame cross beam (7a), top frame longitudinal beam (7b), middle longitudinal beam of the top frame (7c), curled edge (9), waterproof rubber strip (10), convex edge (11), support rod (80), outer fork arm (81), inner fork arm (82), upper chute seat (83), lower chute seat (84), upper connecting rod of the outer fork arm (85), upper connecting rod of the inner fork arm (87), lower connecting rod of the inner fork arm (88), rotating shaft (89). Specific embodiments

[0029] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the following further elaborates on the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0030] The present utility model discloses an expandable carriage with a flattening member, Figure 1 , Figure 2 , Figure 3 and Figure 4Shown respectively are a side sectional view after the extension compartment extends out of the carriage body, a side sectional view after the extension compartment retracts into the carriage body, a perspective view after the extension compartment extends out of the carriage body, and a perspective view after the extension compartment retracts into the carriage body. As can be seen from the figures, the extended carriage includes a carriage body 1 and an extension compartment 2. The extension compartment retracts into or extends out of the carriage body under the drive of a horizontal pushing mechanism. The carriage floor 1a of the carriage body and the extension compartment floor 2a of the extension compartment are located on the same horizontal plane. A leveling member is provided under the extension compartment floor. The leveling member includes a connecting plate 3 and a vertical pushing mechanism stacked one above the other. In the retracted state of the extension compartment, the vertical pushing mechanism pulls the connecting plate down and retracts it under the extension compartment floor. The extension compartment retracts into the carriage body, and the carriage floor and the extension compartment floor are butted together. In the extended state of the extension compartment, the extension compartment extends out of the carriage body, the carriage floor and the extension compartment floor are separated, the vertical pushing mechanism lifts the connecting plate up and connects the carriage floor and the extension compartment floor. The connecting plate, the carriage floor, and the extension compartment floor are located on the same horizontal plane.

[0031] The utility model provides an extended carriage with a leveling member. In the retracted state of the extension compartment, the connecting plate and the vertical pushing mechanism contract and hide under the extension compartment, without occupying the internal space of the carriage. In the extended state of the extension compartment, the connecting plate rises to connect the carriage floor and the extension compartment floor, providing a flat floor and improving the use experience of the RV.

[0032] Combined with Figures 1 to 4 , it can be seen that the carriage body 1 and the extension compartment 2 are butted and surrounded to form a closed space. The carriage body 1 includes a carriage side wall 1b, a carriage top plate 1c, and the carriage floor 1a. The extension compartment 2 includes two extension compartment side walls 2b, an extension compartment top plate 2c, an extension compartment outer side wall 2d, and the extension compartment floor 2a. When the extension compartment extends out of the carriage body, the extension compartment side walls 2b, the extension compartment top plate 2c, the extension compartment outer side wall 2d, and the extension compartment floor are all exposed outside the carriage body. When the extension compartment retracts into the carriage body, the extension compartment side walls 2b, the extension compartment top plate 2c, and the extension compartment floor all retract into the carriage body, and the extension compartment outer side wall is still exposed outside the carriage body.

[0033] The carriage body 1 is installed on the vehicle chassis. The horizontal pushing mechanism includes two linear guide rails 4 and two push rods 5, which are both installed between the extension compartment floor 2a and the vehicle chassis and are symmetrically distributed parallel to each other on the left and right sides. One end of the push rod is installed at the tail of the vehicle chassis, and the other end of the push rod is fixed to the bottom of the extension compartment floor. The extension compartment 2 moves back and forth along the linear guide rail under the drive of the push rod, retracting into or extending out of the carriage body.

[0034] Combined with Figure 1 and Figure 2It can be seen that: when the push rod 5 contracts, the expansion bin 2 will be pulled to move to the left, and the expansion bin 2 extends out of the vehicle body 1; when the push rod 5 extends, the expansion bin 2 will be pushed to the right, and the expansion bin 2 retracts into the vehicle body 1.

[0035] The push rod 5 can be an electric push rod or a hydraulic push rod. In Figure 1 and Figure 2 the illustrated embodiment, the push rod 5 is an electric push rod.

[0036] In a preferred embodiment, the vertical pushing mechanism includes a bottom frame 6, a top frame 7 and a scissor assembly. The bottom frame is installed on the vehicle chassis, the top frame is installed on the lower surface of the connecting plate 3, and the scissor assembly includes two sets, which are arranged side by side between the bottom frame 6 and the top frame 7; in the state where the expansion bin is contracted, the scissor assembly pulls the connecting plate down; in the state where the expansion bin is extended, the scissor assembly lifts the connecting plate up.

[0037] Refer to Figure 5 the perspective view of the vertical pushing mechanism in the propped-up state shown, Figure 6 the perspective view of the vertical pushing mechanism in the contracted state shown. In a preferred embodiment, the scissor assembly includes a strut 80, two outer fork arms 81, two inner fork arms 82, an upper connecting rod 85 of the outer fork arm, an upper connecting rod 87 of the inner fork arm, a lower connecting rod 88 of the inner fork arm, and a rotating shaft 89; the outer fork arm and the inner fork arm are cross - arranged, and the middle parts of the outer fork arm and the inner fork arm are rotatably connected through the rotating shaft; the bottom end of the outer fork arm is hinged to the bottom frame 6, and the top end of the outer fork arm is slidably connected to the top frame 7; the top end of the inner fork arm is hinged to the top frame 7, and the bottom end of the inner fork arm is slidably connected to the bottom frame 6; the upper sections of the two outer fork arms are fixedly connected through the upper connecting rod of the outer fork arm, the upper sections of the two inner fork arms are fixedly connected through the upper connecting rod of the inner fork arm, and the lower sections of the two inner fork arms are fixedly connected through the lower connecting rod of the inner fork arm; the upper end of the strut is hinged to the upper connecting rod of the inner fork arm, and the lower end of the strut is hinged to the bottom frame. The outer fork arm and the inner fork arm are cross - arranged. Under the extension and contraction action of the strut 80, the outer fork arm and the inner fork arm act like scissors and make a shearing motion around the rotating shaft 89. In the state where the expansion bin is contracted, the strut contracts to pull the top frame and the connecting plate down; in the state where the expansion bin is extended, the strut extends to lift the top frame and the connecting plate up.

[0038] The strut 80 can be an electric push rod or a hydraulic push rod. In Figure 5 and Figure 6 the illustrated embodiment, the strut 80 is an electric push rod.

[0039] Refer to Figure 5 or Figure 6, the scissors assembly further includes two upper chute seats 83 horizontally installed on the top frame 7, and two lower chute seats 84 horizontally installed on the bottom frame 6. A pulley is fixed to the top end of the outer fork arm 81, and this pulley is fixed within the upper chute seat 83, enabling the top end of the outer fork arm to move horizontally back and forth along the upper chute seat; a pulley is fixed to the bottom end of the inner fork arm 82, and this pulley is fixed within the lower chute seat 84, enabling the bottom end of the inner fork arm to move horizontally back and forth along the upper chute seat.

[0040] Referring to Figure 5 and Figure 6 the preferred embodiment shown, the bottom frame 6 includes two bottom frame cross beams 6a and two bottom frame longitudinal beams 6b. The two bottom frame cross beams and the two bottom frame longitudinal beams enclose a rectangular frame. A bottom frame middle longitudinal beam 6c parallel to the bottom frame longitudinal beams is further provided in the middle of this rectangular frame. The bottom end of the outer fork arm 81 is hinged to the bottom frame longitudinal beam, the lower chute seat 84 is installed on the inner side wall of the bottom frame cross beam, and the lower end of the support rod is hinged to the bottom frame middle longitudinal beam; the top frame 7 includes two top frame cross beams 7a and two top frame longitudinal beams 7b. The two top frame cross beams and the two top frame longitudinal beams enclose a rectangular frame. A top frame middle longitudinal beam 7c parallel to the top frame longitudinal beams is further provided in the middle of this rectangular frame. The top end of the inner fork arm 82 is hinged to the top frame longitudinal beam, the upper chute seat 83 is installed on the inner side wall of the top frame cross beam, and the upper end of the support rod is hinged to the top frame middle longitudinal beam.

[0041] The expansion bin 2 can be installed on the side wall 1b of the side or the tail of the carriage body 1. Figures 1 to 6 Referring to the preferred embodiment shown, the expansion bin 2 is installed on the side of the carriage body 1 and can be retracted into and extended out of the carriage body from the side of the carriage body. Figures 1 to Only one embodiment is shown. In other embodiments, the expansion bin 2 can also be installed on the side wall of the tail of the carriage body 1.

[0042] Referring to ​ and ​ , and ​ the enlarged view of the expansion bin top plate shown. A raised curling edge 9 is provided at the end of the expansion bin side wall 2b and the expansion bin top plate 2c facing the inside of the carriage body 1. A waterproof rubber strip 10 is provided on the side of the curling edge facing the carriage side wall 1b; a convex edge 11 is provided around the outer side wall 2d of the expansion bin. A waterproof rubber strip is provided on the side of the convex edge facing the carriage side wall 1b or on the side of the carriage side wall facing the convex edge. In this way, when the expansion bin 2 extends or retracts into the carriage body 1, the waterproof rubber strip 10 will squeeze the carriage side wall 1b to achieve dust and water prevention.

[0043] In a preferred embodiment, a window is provided on the side wall 1b of the carriage where the expansion bin 2 is installed. Avoidance steps for accommodating the expansion bin are provided around the perimeter of the window. When the expansion bin retracts into the carriage body, the outer side wall 2d of the expansion bin is embedded in the avoidance steps, making the outer side wall 2d of the expansion bin flush with the side wall 1b of the carriage.

[0044] The above embodiments are only for illustrative purposes and not for limiting. Any equivalent modifications or changes made without departing from the spirit and scope of this application shall be included within the scope of the claims of this application.

Claims

1. An extended carriage with a flattening member, characterized in that: It includes a carriage body (1) and an expansion compartment (2). The expansion compartment retracts into or extends out of the carriage body under the drive of a horizontal pushing mechanism. The carriage floor (1a) of the carriage body and the expansion compartment floor (2a) of the expansion compartment are on the same horizontal plane. A leveling member is provided under the expansion compartment floor. The leveling member includes a connecting plate (3) and a vertical pushing mechanism which are stacked up and down. In the retracted state of the expansion compartment, the vertical pushing mechanism pulls the connecting plate down and retracts it under the expansion compartment floor. The expansion compartment retracts into the carriage body, and the carriage floor and the expansion compartment floor are butted together. In the extended state of the expansion compartment, the expansion compartment extends out of the carriage body, the carriage floor and the expansion compartment floor are separated, the vertical pushing mechanism lifts the connecting plate up and connects the carriage floor and the expansion compartment floor. The connecting plate, the carriage floor and the expansion compartment floor are on the same horizontal plane.

2. The extended carriage with a flattening member according to claim 1, characterized in that: The carriage body (1) includes a carriage side wall (1b), a carriage top plate (1c) and the carriage floor (1a). The expansion compartment (2) includes two expansion compartment side walls (2b), an expansion compartment top plate (2c), an expansion compartment outer side wall (2d) and the expansion compartment floor (2a). When the expansion compartment extends out of the carriage body, the expansion compartment side walls (2b), the expansion compartment top plate (2c), the expansion compartment outer side wall (2d) and the expansion compartment floor are all exposed outside the carriage body. When the expansion compartment retracts into the carriage body, the expansion compartment side walls (2b), the expansion compartment top plate (2c) and the expansion compartment floor all retract into the carriage body, and the expansion compartment outer side wall is still exposed outside the carriage body.

3. The extended carriage with a flattening member according to claim 2, characterized in that: The carriage body (1) is installed on a vehicle chassis. The horizontal pushing mechanism includes two linear guide rails (4) and two push rods (5), which are all installed between the expansion compartment floor (2a) and the vehicle chassis and are symmetrically distributed parallel on the left and right sides. One end of the push rod is installed at the tail of the vehicle chassis, and the other end of the push rod is fixed to the bottom of the expansion compartment floor. The expansion compartment (2) moves back and forth along the linear guide rail under the drive of the push rod, retracting into or extending out of the carriage body.

4. The extended carriage with a flattening member according to claim 3, characterized in that: The vertical pushing mechanism includes a bottom frame (6), a top frame (7) and a scissor assembly. The bottom frame is installed on the vehicle chassis, the top frame is installed on the lower surface of the connecting plate (3), and the scissor assembly includes two sets, which are installed side by side between the bottom frame (6) and the top frame (7). In the retracted state of the expansion compartment, the scissor assembly pulls the connecting plate down. In the extended state of the expansion compartment, the scissor assembly lifts the connecting plate up.

5. The extended carriage with a flattening member according to claim 4, characterized in that: The scissor assembly includes a strut (80), two outer fork arms (81), two inner fork arms (82), an outer fork arm upper connecting rod (85), an inner fork arm upper connecting rod (87), an inner fork arm lower connecting rod (88), and a rotating shaft (89). The outer fork arms and the inner fork arms are cross - arranged, and the middle parts of the outer fork arms and the inner fork arms are rotationally connected through the rotating shaft. The bottom end of the outer fork arm is hinged to the bottom frame (6), and the top end of the outer fork arm is slidably connected to the top frame (7). The top end of the inner fork arm is hinged to the top frame (7), and the bottom end of the inner fork arm is slidably connected to the bottom frame (6); The upper sections of the two outer fork arms are fixedly connected by the outer fork arm upper connecting rod, the upper sections of the two inner fork arms are fixedly connected by the inner fork arm upper connecting rod, and the lower sections of the two inner fork arms are fixedly connected by the inner fork arm lower connecting rod; The upper end of the support rod is hinged to the upper connecting rod of the inner fork arm, and the lower end of the support rod is hinged to the bottom frame; when the expansion compartment is in a contracted state, the support rod contracts and pulls the top frame and the connecting plate down; when the expansion compartment is in an extended state, the support rod extends and lifts the top frame and the connecting plate up.

6. The extended carriage with a flattening member according to claim 5, characterized in that: The scissor assembly further comprises two upper slide seats (83) mounted horizontally on the top frame (7), and two lower slide seats (84) mounted horizontally on the bottom frame (6). A pulley is fixed to the top end of the outer fork arm (81), and the pulley is fixed in the upper slide groove seat (83), so that the top end of the outer fork arm can move back and forth horizontally along the upper slide groove seat; A pulley is fixed at the bottom end of the inner fork arm (82), and the pulley is fixed in the lower slide groove seat (84), so that the bottom end of the inner fork arm can move back and forth horizontally along the upper slide groove seat.

7. The extended carriage with a flattening member according to claim 6, wherein: The bottom frame (6) includes two bottom frame cross beams (6a) and two bottom frame longitudinal beams (6b), the two bottom frame cross beams and the two bottom frame longitudinal beams forming a rectangular frame, a bottom frame middle longitudinal beam (6c) parallel to the bottom frame longitudinal beam is further provided in the middle of the rectangular frame, the bottom end of the outer fork arm (81) is hinged to the bottom frame longitudinal beam, the lower groove seat (84) is installed on the inner side wall of the bottom frame cross beam, and the lower end of the support rod is hinged to the bottom frame middle longitudinal beam; The top frame (7) includes two top frame cross beams (7a) and two top frame longitudinal beams (7b). The two top frame cross beams and the two top frame longitudinal beams form a rectangular frame. A top frame middle longitudinal beam (7c) parallel to the top frame longitudinal beam is provided in the middle of the rectangular frame. The top end of the inner fork arm (82) is hinged to the top frame longitudinal beam. The upper slide seat (83) is installed on the inner side wall of the top frame cross beam. The upper end of the support rod is hinged to the top frame middle longitudinal beam.

8. The extended carriage with a flattening member according to claim 1, characterized in that: The expansion compartment (2) can be installed on the side of the carriage body (1) or on the rear carriage side wall (1b).

9. The extended carriage with a flattening member according to any one of claims 2 to 7, characterized in that: The end portions of the expansion bin side wall (2b) and the expansion bin top plate (2c) facing the inside of the vehicle body (1) are provided with a circle of raised rolled edges (9), and a side of the rolled edges facing the vehicle side wall (1b) is provided with a waterproof adhesive strip (10); the outer side wall (2d) of the expansion bin is provided with a circle of convex edges (11) around it, and a side of the convex edges facing the vehicle side wall (1b) or a side of the vehicle side wall facing the convex edges is provided with a waterproof adhesive strip.

10. The extended carriage with a flattening member according to claim 9, characterized in that: A window is provided on the side wall (1b) of the carriage where the expansion compartment (2) is installed. Avoidance steps for accommodating the expansion compartment are provided around the four edges of the window. When the expansion compartment is retracted into the carriage body, the outer side wall (2d) of the expansion compartment is embedded in the avoidance steps, so that the outer side wall (2d) of the expansion compartment is flush with the side wall (1b) of the carriage.

Images