Double-cam trackless side sliding door and vehicle thereof

Abstract

The present invention relates to the technical field of automobile auxiliary devices, and discloses a double cam trackless side sliding door and a vehicle thereof, comprising a door body, wherein the door body is connected with an upper swing arm, a lower swing arm and a driving part, wherein the upper swing arm and the lower swing arm both comprise a door transmission assembly, a connecting rod and a vehicle body support for connecting with a vehicle body, wherein the door transmission assembly comprises a door support for connecting with the door body, a roller, a cam block and a first rotating shaft, wherein the cam block is provided with a cam groove, the vehicle body support is hinged with the first end of the connecting rod, the second end of the connecting rod is fixedly connected with the cam block, the door support is provided with an axle slot hole and a roller hole, the first rotating shaft is rotatably mounted on the axle slot hole and the second end of the connecting rod respectively, one end of the roller is rotatably mounted on the roller hole, and the other end of the roller moves along the cam groove; the driving part is mounted on the vehicle body support of the upper swing arm, and the driving part is drivingly connected with the first end of the connecting rod of the upper swing arm. The double cam trackless side sliding door and the vehicle thereof of the present invention can reduce the door opening space of the front vehicle door.

Description

Technical Field

[0001] The invention relates to the technical field of automobile auxiliary devices, in particular to a double-cam trackless side sliding door and a vehicle thereof. Background Art

[0002] The rear of the existing car is provided with an external track for the rear door, and the rear side door of the car is slidably installed with the external guide rail of the rear door to form a rear side sliding door, which reduces the door opening space of the rear side door, but the front end of the door is easy to interfere with the body. At the same time, the front end of the car is limited by the arrangement space of the external guide rail, and the front side sliding door cannot be realized by sliding the front door on the external guide rail. The front door of the car is rotated to open, resulting in a large door opening space. Summary of the invention

[0003] The purpose of the present invention is to provide a double-cam trackless side sliding door and a vehicle thereof for realizing sliding opening of a front door of a vehicle, so as to avoid interference between the side sliding door and the vehicle body, reduce the space occupied by the door opening in the Y direction, i.e., the vehicle width direction, and realize that the side sliding door is suitable for installation on the front side and the rear side at the same time.

[0004] In order to achieve the above-mentioned object, the present invention provides a double-cam trackless side sliding door, comprising a door body, wherein the door body is connected with an upper swing arm, a lower swing arm and a driving part, wherein the upper swing arm and the lower swing arm both comprise a door transmission assembly, a connecting rod and a body support for connecting with a body, wherein the door transmission assembly comprises a door support, a roller, a cam block and a first rotating shaft for connecting with the door body, wherein the cam block is provided with a cam groove, the body support is hinged with a first end of the connecting rod, the second end of the connecting rod is fixedly connected with the cam block, the door support is provided with an axis slot hole and a roller hole, the first rotating shaft is rotatably installed on the axis slot hole and the second end of the connecting rod respectively, one end of the roller is rotatably installed on the roller hole, and the other end of the roller moves along the cam groove;

[0005] The driving part is mounted on the vehicle body support of the upper swing arm, and the driving part is drivingly connected to the first end of the connecting rod of the upper swing arm.

[0006] As a preferred solution, the cam block is provided with a polygonal through hole, the second end of the connecting rod is provided with a polygonal connecting column, the first rotating shaft is coaxially mounted on the polygonal connecting column, and the polygonal connecting column is mounted on the polygonal through hole.

[0007] As a preferred embodiment, the cam block includes a first straight line surface and a second straight line surface, the first end of the first straight line surface intersects with the first end of the second straight line surface to form a shaft end, the second end of the first straight line surface is connected with the second end of the second straight line surface through a curved surface, the polygonal through hole is located at the edge of the shaft end, and the cam groove is arranged along the edge of the curved surface.

[0008] As a preferred embodiment, the door support includes a door bottom plate, which is connected to an upper connecting plate and a lower connecting plate, the upper connecting plate and the lower connecting plate are protruding toward one side of the connecting rod, the upper connecting plate and the lower connecting plate are respectively provided with the shaft slot hole and the roller hole, and the cam block and the second end of the connecting rod are located between the upper connecting plate and the lower connecting plate.

[0009] As a preferred embodiment, the lower connecting plate includes a vertical connecting plate, and the first side cross plate and the second side cross plate are respectively connected on both sides of the vertical connecting plate, the first side cross plate is provided with the roller hole, and the second side cross plate is provided with the shaft slot hole, the distance between the first side cross plate and the upper connecting plate is smaller than the distance between the second side cross plate and the upper connecting plate, the cam block is located between the first side cross plate and the upper connecting plate, and the cam block and the second end of the connecting rod are located between the second side cross plate and the upper connecting plate.

[0010] As a preferred embodiment, the vehicle body support includes two support arms, an installation opening is formed between the two support arms, the first end of the connecting rod is connected to the second rotating shaft, the first end of the connecting rod is installed in the installation opening, the connecting rod is rotatably installed on the support arm via the second rotating shaft, and the driving part is drivingly connected to the second rotating shaft.

[0011] As a preferred solution, the door bottom plate is provided with a bottom plate groove which is arranged at a position corresponding to the cam block, and the cam block is located between an upper end of the bottom plate groove and a lower end of the bottom plate groove.

[0012] As a preferred embodiment, the cam block includes an open door state and a closed door state. When the cam block is in the open door state, the cam block is located on one side of the bottom plate groove. When the cam block is in the closed door state, at least a portion of the cam block is located in the bottom plate groove.

[0013] A car with a double-cam trackless side sliding door comprises a body and the double-cam trackless side sliding door. An entrance and an exit are provided on the side of the body, and the double-cam trackless side sliding door is installed at the entrance and an exit.

[0014] As a preferred solution, the entrance and exit are located at the front side of the vehicle body and / or the rear side of the vehicle body.

[0015] Compared with the prior art, the double-cam trackless sliding door and the vehicle thereof of the embodiment of the present invention have the following beneficial effects: one end of the upper swing arm and the lower swing arm are respectively hinged to the vehicle door, the other ends of the upper swing arm and the lower swing arm are respectively hinged to the vehicle body, and both ends of the upper swing arm and the lower swing arm can perform rotational motion. The vehicle body support installed on the upper swing arm by the driving part is driven and connected to the first end of the connecting rod of the upper swing arm by the driving part to drive the connecting rod of the upper swing arm to rotate, the cam block of the upper swing arm rotates synchronously with the connecting rod of the upper swing arm and rotates around the first rotating shaft of the upper swing arm, and the cam groove of the upper swing arm drives the roller of the upper swing arm to move, thereby driving the door support of the upper swing arm and the connecting rod of the upper swing arm to rotate relative to each other. The door supports of the upper swing arm and the lower swing arm are both connected to the vehicle door, the door support of the upper swing arm drives the vehicle door to rotate, and the vehicle door drives the lower swing arm to perform rotational motion. The cam block of the lower swing arm rotates synchronously with the connecting rod of the lower swing arm and rotates around the first rotation axis of the lower swing arm. The cam groove of the lower swing arm drives the roller of the lower swing arm to move in the cam groove, thereby realizing the relative rotation of the door support of the lower swing arm and the connecting rod of the lower swing arm, thereby realizing the sliding opening of the front door and reducing the opening space of the front door. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0017] Figure 2 It is a schematic structural diagram of a lower swing arm according to an embodiment of the present invention.

[0018] Figure 3 It is a schematic structural diagram of a cam block according to an embodiment of the present invention.

[0019] Figure 4 It is a schematic structural diagram of a door support according to an embodiment of the present invention.

[0020] Figure 5 It is a schematic structural diagram of a door body in a closed state according to an embodiment of the present invention.

[0021] Figure 6 It is a structural schematic diagram of a door body in an embodiment of the present invention that turns from a closed state to an open state at the rear end of the door body.

[0022] Figure 7 It is a schematic structural diagram of an embodiment of the present invention with the rear end of the door body opened.

[0023] Figure 8 It is a schematic structural diagram of the front end release of the door body according to an embodiment of the present invention.

[0024] Fig. 9 It is a schematic structural diagram of a vehicle door turning from tilted to parallel after the front end of the door body is released in an embodiment of the present invention.

[0025] Fig.10 It is a schematic structural diagram of a vehicle door turning from tilted to parallel in an embodiment of the present invention.

[0026] Fig.11 It is a schematic structural diagram of a vehicle door fully opened according to an embodiment of the present invention.

[0027] In the figure:

[0028] 10. Door body; 11. Upper swing arm; 12. Lower swing arm; 13. Driving unit;

[0029] 20. Door transmission assembly; 21. Roller; 22. First rotating shaft; 23. Second rotating shaft;

[0030] 30. Door support; 31. Door bottom plate; 32. Upper connecting plate; 33. Vertical connecting plate; 34. First side horizontal plate; 35. Second side horizontal plate; 36. Axle slot hole; 37. Roller hole; 38. Bottom plate slot; 39. Lower connecting plate;

[0031] 40. cam block; 41. cam groove; 42. polygonal through hole; 43. first straight line surface; 44. second straight line surface; 45. curved surface; 46. rotating shaft end;

[0032] 50, connecting rod; 51, first end; 52, second end;

[0033] 60. Vehicle body support; 61. Support arm; 62. Mounting opening. DETAILED DESCRIPTION

[0034] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" used in the present invention to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0036] In the description of the present invention, it should be understood that the terms "connected", "connected", "fixed" and the like used in the present invention should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or a welding connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] like Figures 1 to 4 As shown, a double cam trackless side sliding door of a preferred embodiment of the present invention comprises a door body 10, the door body 10 is connected with an upper swing arm 11, a lower swing arm 12 and a driving part 13, the upper swing arm 11 and the lower swing arm 12 respectively comprise a door transmission assembly 20, a connecting rod 50 and a body support 60 for connecting with a body, the door transmission assembly 20 comprises a door support 30 for connecting with the door body 10, a roller 21, a cam block 40 and a first rotating shaft 22, the cam block 40 is provided with a cam groove 41, the body support 60 is hinged with a first end 51 of the connecting rod 50, the second end 52 of the connecting rod 50 is fixedly connected with the cam block 40, the door support 30 is provided with an axis slot hole 36 and a roller hole 37, the first rotating shaft 22 is rotatably mounted on the axis slot hole 36 and the second end 52 of the connecting rod 50 respectively, one end of the roller 21 is rotatably mounted on the roller hole 37, and the other end of the roller 21 moves along the cam groove 41;

[0038] The driving unit 13 is mounted on the vehicle body support 60 of the upper swing arm 11 , and the driving unit 13 is drivingly connected to the first end 51 of the connecting rod 50 of the upper swing arm 11 .

[0039] The double cam trackless sliding door of the present invention has one end of the upper swing arm 11 and the lower swing arm 12 respectively hinged to the vehicle door, and the other end of the upper swing arm 11 and the lower swing arm 12 respectively hinged to the vehicle body, and both ends of the upper swing arm 11 and the lower swing arm 12 can perform rotational motion. The vehicle body support 60 installed on the upper swing arm 11 through the driving part 13 is connected to the first end 51 of the connecting rod 50 of the upper swing arm 11 through the driving part 13 to drive the connecting rod 50 of the upper swing arm 11 to rotate, the cam block 40 of the upper swing arm 11 rotates synchronously with the connecting rod 50 of the upper swing arm 11 and rotates around the first rotating shaft 22 of the upper swing arm 11, and the cam groove 41 of the upper swing arm 11 drives the roller 21 of the upper swing arm 11 to move, thereby driving the vehicle door support 30 of the upper swing arm 11 and the connecting rod 50 of the upper swing arm 11 to rotate relative to each other. The door support 30 of the upper swing arm 11 and the lower swing arm 12 are both connected to the door, the door support 30 of the upper swing arm 11 drives the door to rotate, and the door drives the lower swing arm 12 to rotate. The cam block 40 of the lower swing arm 12 rotates synchronously with the connecting rod 50 of the lower swing arm 12 and rotates around the first rotation axis of the lower swing arm 12, and the cam groove 41 of the lower swing arm 12 drives the roller 21 of the lower swing arm 12 to move in the cam groove 41, so that the door support 30 of the lower swing arm 12 and the connecting rod 50 of the lower swing arm 12 can rotate relative to each other, thereby realizing the sliding opening of the front door of the vehicle, and reducing the opening space of the front door.

[0040] Further, such as Figure 1 to Figure 2 As shown, the cam groove 41 is provided with a door opening end and a door closing end. The end of the cam groove 41 facing the door is the door closing end, and the end of the cam groove 41 facing the connecting rod 50 is the door opening end. When the roller 21 is located at the door closing end, the door is in a closed state, and when the roller 21 is located at the door opening end, the door is in an open state.

[0041] As one implementation manner, the driving unit 13 is a motor.

[0042] As another embodiment, the motor is drivingly connected to the first end 51 of the connecting rod 50 of the upper swing arm 11 through a reduction gearbox.

[0043] Further, such as Figure 3 As shown, the cam block 40 is provided with a polygonal through hole 42, the second end 52 of the connecting rod 50 is provided with a polygonal connecting column, the first rotating shaft 22 is coaxially installed on the polygonal connecting column, and the polygonal connecting column is installed in the polygonal through hole 42, so as to realize the limited connection between the cam block 40 and the connecting rod 50, and ensure that the cam block 40 and the connecting rod 50 realize synchronous rotation.

[0044] Further, such as Figures 1 to 3 As shown, the cam block 40 includes a first straight surface 43 and a second straight surface 44, the first end 51 of the first straight surface 43 and the first end 51 of the second straight surface 44 intersect to form a shaft end 46, the second end 52 of the first straight surface 43 and the second end 52 of the second straight surface 44 are connected through a curved surface 45, the polygonal through hole 42 is located at the edge of the shaft end 46, and the cam groove 41 is arranged along the edge of the curved surface 45. The cam block 40 is rotatably connected to the shaft through the shaft end 46. The first straight surface 43, the second straight surface 44 and the curved surface 45 are enclosed and connected to form the outline of the cam block 40, and the cam groove 41 serves as a moving track of the roller 21, so that the door body 10 moves according to the moving track.

[0045] Further, such as Figure 4 As shown, the door support 30 includes a door bottom plate 31, which is connected to an upper connecting plate 32 and a lower connecting plate 39. The upper connecting plate 32 and the lower connecting plate 39 are protruded toward one side of the connecting rod 50. The upper connecting plate 32 and the lower connecting plate 39 are respectively provided with an axial slot hole 36 and a roller hole 37. The cam block 40 and the second end 52 of the connecting rod 50 are located between the upper connecting plate 32 and the lower connecting plate 39, so that the cam and the connecting rod 50 are maintained between the upper connecting plate 32 and the lower connecting plate 39, and drive the door body 10 to slide open parallel to the vehicle body.

[0046] Further, such as Figure 4As shown, the lower connecting plate 39 includes a vertical connecting plate 33, and the first side cross plate 34 and the second side cross plate 35 are respectively connected to the two sides of the vertical connecting plate 33. The first side cross plate 34 is provided with a roller hole 37, and the second side cross plate 35 is provided with an axis slot hole 36. The distance between the first side cross plate 34 and the upper connecting plate 32 is smaller than the distance between the second side cross plate 35 and the upper connecting plate 32. The cam block 40 is located between the first side cross plate 34 and the upper connecting plate 32, and the cam block 40 and the second end 52 of the connecting rod 50 are located between the second side cross plate 35 and the upper connecting plate 32. By setting the vertical connecting plate 33, the first side transverse plate 34 and the second side transverse plate 35 are respectively connected to different height positions on both sides of the vertical connecting plate 33, so that an installation cavity adapted to the thickness of the cam block 40 is formed between the first transverse plate and the upper connecting plate 32, and an installation cavity adapted to the total height of the cam block 40 and the second end 52 of the connecting rod 50 is formed between the second transverse plate and the upper connecting plate 32, thereby improving the limiting effect of the cam block 40 and the connecting rod 50.

[0047] Further, such as Figure 1 to Figure 2 As shown, the vehicle body support 60 includes two support arms 61, a mounting opening 62 is formed between the two support arms 61, the first end 51 of the connecting rod 50 is connected to the second rotating shaft 23, the first end 51 of the connecting rod 50 is mounted on the mounting opening 62, the connecting rod 50 is rotatably mounted on the support arm 61 through the second rotating shaft 23, and the driving part 13 is drivingly connected to the second rotating shaft 23. A mounting opening 62 is formed between the two support arms 61, and the first end 51 of the connecting rod 50 is rotationally limited by the two support arms 61.

[0048] Further, such as Figure 4 As shown, the door bottom plate 31 is provided with a bottom plate groove 38 corresponding to the cam block 40, and the cam block 40 is located between the upper end and the lower end of the bottom plate groove. The bottom plate groove 38 is provided to provide an escape space for the cam block 40 when rotating, so that the door transmission assembly 20 can be smoothly transmitted.

[0049] Further, the door transmission assembly 20 includes an open state and a closed state. When the door transmission assembly 20 is in the open state, the cam block 40 is located on one side of the bottom plate groove 38. When the door transmission assembly 20 is in the closed state, at least a portion of the cam block 40 is located in the bottom plate groove 38. When the door transmission assembly 20 changes from the closed state to the open state, the end of the cam block close to the bottom plate groove 38 rotates toward the bottom plate groove 38, and the cam block gradually enters the bottom plate groove 38 and rotates in the bottom plate groove 38.

[0050] The upper swing arm 11 is tilted relative to the lower swing arm 12, and the inclination of the upper swing arm is set accordingly according to the rotation process corresponding to the track of the cam groove, so that the overall rotation of the trackless sliding door can proceed smoothly.

[0051] Further, such as Figure 1As shown, the upper swing arm 11 and the lower swing arm 12 are arranged in a mirror image along the swing plane, and the connecting rod 50 of the upper swing arm 11 is longer than the connecting rod 50 of the lower swing arm 12. Since there needs to be an angle difference when opening the door, the rear end of the door leaves the body first, and the front end of the door leaves the body later, the lengths of the connecting rod 50 of the upper swing arm 11 and the lower swing arm 12 are different, and the length of the connecting rod 50 of the upper swing arm 11 is greater than that of the connecting rod 50 of the lower swing arm 12, so that the movement of the cam block 40 of the upper swing arm 11 and the cam block 40 of the lower swing arm 12 has a certain time difference, forming different movement tracks.

[0052] When opening the door, the door needs to be opened to a certain angle, and the cam blocks 40 of the upper swing arm 11 and the lower swing arm 12 work together to make the door slide backward as a whole to avoid the air, and then reset. Subsequently, the rollers 21 of the upper swing arm 11 and the lower swing arm 12 reach the designed positions corresponding to the cam groove 41 to complete the door opening movement, and the door closing movement is the opposite.

[0053] A car with a double-cam trackless side sliding door comprises a body and the double-cam trackless side sliding door. An entrance and an exit are provided on the side of the body, and the double-cam trackless side sliding door is installed at the entrance and the exit.

[0054] The present invention discloses a double-cam trackless side sliding door automobile, wherein one end of an upper swing arm 11 and a lower swing arm 12 are respectively hinged to a door, and the other ends of the upper swing arm 11 and the lower swing arm 12 are respectively hinged to a vehicle body, and both ends of the upper swing arm 11 and the lower swing arm 12 can perform rotational motion. A vehicle body support 60 installed on the upper swing arm 11 through a driving unit 13 is connected to a first end 51 of a connecting rod 50 of the upper swing arm 11 through the driving unit 13 to drive the connecting rod 50 of the upper swing arm 11 to rotate, the cam block 40 of the upper swing arm 11 rotates synchronously with the connecting rod 50 of the upper swing arm 11 and rotates around the first rotating shaft 22 of the upper swing arm 11, and the cam groove 41 of the upper swing arm 11 drives the roller 21 of the upper swing arm 11 to move, thereby driving the door support 30 of the upper swing arm 11 and the connecting rod 50 of the upper swing arm 11 to rotate relative to each other. The door support 30 of the upper swing arm 11 and the lower swing arm 12 are both connected to the door, the door support 30 of the upper swing arm 11 drives the door to rotate, and the door drives the lower swing arm 12 to rotate. The cam block 40 of the lower swing arm 12 rotates synchronously with the connecting rod 50 of the lower swing arm 12 and rotates around the first rotation axis of the lower swing arm 12, and the cam groove 41 of the lower swing arm 12 drives the roller 21 of the lower swing arm 12 to move in the cam groove 41, so that the door support 30 of the lower swing arm 12 and the connecting rod 50 of the lower swing arm 12 can rotate relative to each other, thereby realizing the sliding opening of the front door of the vehicle, and reducing the opening space of the front door.

[0055] Furthermore, the entrance and exit are located at the front side of the vehicle body, which reduces the opening space of the front door of the vehicle and solves the technical problem that the side door slide rail cannot be installed in the front space of the vehicle.

[0056] The working process of the present invention is:

[0057] The cam groove 41 includes an unlocking arc segment, a first arc segment and a second arc segment which are connected in sequence;

[0058] The shaft slot hole 36 includes a slot hole first end, a slot hole middle section and a slot hole second end;

[0059] When the door body 10 is fully opened and closed, the shaft slot hole 36 of the upper swing arm 11 is parallel to the door bottom plate 31, and the shaft slot hole 36 of the lower swing arm 12 is inclined toward the door bottom plate 31. The setting direction of the shaft slot hole 36 corresponds to the shape of the cam slot 41, so that the overall rotation of the trackless sliding door can proceed smoothly.

[0060] Among them, Figure 5 As shown, when the door body is in a closed state, the roller 21 is in an unlocking arc section, and the first rotating shaft 22 is at the first end of the shaft slot 36 .

[0061] like Figure 6 - Figure 7 As shown, the rear end of the door body 10 rotates outward first, the door body 10 is in a tilted state, the rear end of the door body 10 is disengaged from the lock buckle and unlocked, the roller 21 moves from the unlocking arc segment to the first arc segment, and the first rotating shaft 22 moves from the first end of the slot of the shaft slot hole 36 toward the second end of the slot hole.

[0062] like Figure 8 - Fig. 9 As shown, the front end of the door body 10 is disengaged from the lock and unlocked, the roller 21 moves from the first arc segment to the second arc segment, and the first rotating shaft 22 moves from the second end of the slot of the shaft slot hole 36 to the first end of the slot. When the roller 21 moves to the end of the first arc segment and the first rotating shaft 22 is in the middle segment, the front end of the door body 10 is completely disengaged from the lock;

[0063] like Fig.10 - Fig.11 As shown, the door body 10 continues to rotate outward and gradually turns from an inclined state to a state where the door body 10 is parallel to the vehicle body, the roller 21 enters the second arc segment, and the first rotating shaft 22 moves from the middle section of the slot hole to the first end of the slot hole, thereby achieving full opening of the door body 10.

[0064] In summary, the embodiment of the present invention provides a double-cam trackless sliding door and a vehicle thereof, wherein one end of the upper swing arm 11 and the lower swing arm 12 are respectively hinged to the door body 10, and the other ends of the upper swing arm 11 and the lower swing arm 12 are respectively hinged to the vehicle body, and both ends of the upper swing arm 11 and the lower swing arm 12 can perform rotational motion. The vehicle body support 60 installed on the upper swing arm 11 through the driving part 13 is connected to the first end 51 of the connecting rod 50 of the upper swing arm 11 through the driving part 13 to drive the connecting rod 50 of the upper swing arm 11 to rotate, the cam block 40 of the upper swing arm 11 rotates synchronously with the connecting rod 50 of the upper swing arm 11 and rotates around the first rotating shaft 22 of the upper swing arm 11, and the cam groove 41 of the upper swing arm 11 drives the roller 21 of the upper swing arm 11 to move, thereby driving the door support 30 of the upper swing arm 11 and the connecting rod 50 of the upper swing arm 11 to rotate relative to each other. The door support 30 of the upper swing arm 11 and the lower swing arm 12 are both connected to the door body 10. The door support 30 of the upper swing arm 11 drives the door body 10 to rotate, and the door body 10 drives the lower swing arm 12 to rotate. The cam block 40 of the lower swing arm 12 rotates synchronously with the connecting rod 50 of the lower swing arm 12 and rotates around the first rotation axis of the lower swing arm 12. The cam groove 41 of the lower swing arm 12 drives the roller 21 of the lower swing arm 12 to move in the cam groove 41, thereby realizing the relative rotation of the support 30 of the lower swing arm 12 and the connecting rod 50 of the lower swing arm 12, thereby realizing the sliding opening of the front door of the vehicle, and reducing the door opening space of the front door body 10.

[0065] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A double cam trackless sliding door, characterized in that: The invention comprises a door body, wherein the door body is connected with an upper swing arm, a lower swing arm and a driving part, wherein the upper swing arm and the lower swing arm both comprise a door transmission assembly, a connecting rod and a body support for connecting with a body, wherein the door transmission assembly comprises a door support, a roller, a cam block and a first rotating shaft for connecting with the door body, wherein the cam block is provided with a cam groove, the body support is hinged with a first end of the connecting rod, the second end of the connecting rod is fixedly connected with the cam block, the door support is provided with an axis slot hole and a roller hole, the first rotating shaft is rotatably mounted on the axis slot hole and the second end of the connecting rod respectively, one end of the roller is rotatably mounted on the roller hole, and the other end of the roller moves along the cam groove; The driving part is mounted on the vehicle body support of the upper swing arm, and the driving part is drivingly connected to the first end of the connecting rod of the upper swing arm.

2. The double cam trackless sliding door according to claim 1, characterized in that: The cam block is provided with a polygonal through hole, the second end of the connecting rod is provided with a polygonal connecting column, the first rotating shaft is coaxially mounted on the polygonal connecting column, and the polygonal connecting column is mounted on the polygonal through hole.

3. The double cam trackless sliding door according to claim 2, characterized in that: The cam block includes a first straight surface and a second straight surface, the first end of the first straight surface intersects with the first end of the second straight surface to form a shaft end, the second end of the first straight surface is connected with the second end of the second straight surface through a curved surface, the polygonal through hole is located at the edge of the shaft end, and the cam groove is arranged along the edge of the curved surface.

4. The double cam trackless sliding door according to claim 1, characterized in that: The door support includes a door bottom plate, which is connected to an upper connecting plate and a lower connecting plate, the upper connecting plate and the lower connecting plate are protruding toward one side of the connecting rod, the upper connecting plate and the lower connecting plate are respectively provided with the shaft slot hole and the roller hole, and the cam block and the second end of the connecting rod are located between the upper connecting plate and the lower connecting plate.

5. The double cam trackless sliding door according to claim 4, characterized in that: The lower connecting plate includes a vertical connecting plate, and the first side cross plate and the second side cross plate are respectively connected to the two sides of the vertical connecting plate, the first side cross plate is provided with the roller hole, and the second side cross plate is provided with the shaft slot hole, the distance between the first side cross plate and the upper connecting plate is smaller than the distance between the second side cross plate and the upper connecting plate, the cam block is located between the first side cross plate and the upper connecting plate, and the cam block and the second end of the connecting rod are located between the second side cross plate and the upper connecting plate.

6. The double cam trackless sliding door according to claim 1, characterized in that: The vehicle body support includes two support arms, an installation opening is formed between the two support arms, the first end of the connecting rod is connected to the second rotating shaft, the first end of the connecting rod is installed in the installation opening, the connecting rod is rotatably installed on the support arm through the second rotating shaft, and the driving part is drivingly connected to the second rotating shaft.

7. The double cam trackless sliding door according to claim 4, characterized in that: The door bottom plate is provided with a bottom plate groove which is arranged at a position corresponding to the cam block, and the cam block is located between the upper end of the bottom plate groove and the lower end of the bottom plate groove.

8. The double cam trackless sliding door according to claim 7, characterized in that: The cam block includes an open state and a closed state. When the cam block is in the open state, the cam block is located at one side of the bottom plate groove. When the cam block is in the closed state, at least a portion of the cam block is located in the bottom plate groove.

9. A double-cam trackless sliding door vehicle, characterized in that: It comprises a vehicle body and the dual-cam trackless side sliding door as claimed in any one of claims 1 to 8, wherein an entrance and exit are opened on the side of the vehicle body, and the dual-cam trackless side sliding door is installed at the entrance and exit.

10. The automobile with double cam trackless side sliding doors according to claim 9, characterized in that: The entrance and exit are located at the front side of the vehicle body and / or the rear side of the vehicle body.

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