Lower swing guide device and sliding door

Abstract

The application discloses a lower swing guiding device and a sliding plug door, and the guiding device comprises a swing arm base, a Y-direction driving cam and an X-direction driving cam which are rotationally arranged in the swing arm base; a swing arm is rotationally arranged in the swing arm base, a first connecting piece which is movably connected with the Y-direction driving cam is connected to the swing arm, a guiding locking piece which cooperates with a lower door rail of a door leaf is arranged on the swing arm; when the cam driving shaft is driven, the guiding locking piece guides the X-direction movement of the lower part of the door leaf, and gives a Y-direction movement component of the lower part of the door leaf, so that the lower part of the door leaf can be inserted in a non-perpendicular direction; a stop arm is rotationally arranged in the swing arm base, a second connecting piece which is movably connected with the X-direction driving cam is connected to the stop arm, and a stop piece is arranged on the stop arm; the stop piece restrains the separation of the door leaf along the vehicle length direction during the insertion of the door leaf and after the door leaf is inserted in place. The application can configure a lower pin under the front gear, and can cancel the balance wheel, so as to reduce the load of the bearing driving mechanism, and ensure that the lower part of the door leaf is reliably constrained.

Description

Technical Field

[0001] This invention relates to the field of rail transit vehicle door technology, specifically to a lower swing guide device and a sliding door. Background Technology

[0002] In recent years, with the increase in the operating speed of urban rail vehicles, the increase in the length of vehicle trains, and the reduction in the cross-section of tunnels, the aerodynamic load on the door system during vehicle operation has become increasingly large, making it increasingly difficult to ensure the sealing performance of urban rail sliding doors.

[0003] The sealing performance of a sliding door is closely related to the door's constraint stiffness, and the design of the constraint system needs to be considered in conjunction with the door's movement trajectory. There are two main sliding door movement trajectories for urban rail vehicles: one inserts at a 35° angle, and the other inserts at a 90° angle (vertical insertion). The former typically uses a three-roller swing arm slide pair, a balance wheel, and a lower stop pin as its constraint and motion guidance system. The latter typically uses a single-roller swing arm slide pair driven by a vertically synchronized linkage and a fixed constraint along the vehicle's length, without a lower stop pin.

[0004] The 35° insertion design, despite the inclusion of a balance wheel and a lower stop pin, still allows the lower parts of the two door panels to easily separate under pneumatic loads, leading to decreased sealing. Furthermore, the balance wheel acts as a force-amplifying lever in the door system, generating a significant downward load and increasing the load on the load-bearing drive mechanism, which is detrimental to the load-bearing structure. The 90° insertion design, lacking a lower stop pin at the bottom of the door panel's front edge, fails to provide constraint in the vehicle width direction. Under the strong negative pressure of high-speed operation, the sealing performance rapidly deteriorates. Summary of the Invention

[0005] The purpose of this invention is to provide a lower swing guide device and a sliding door to eliminate the disadvantages of the two types of door constraint systems, so that the constraint can be achieved by a simple lower stop pin at the front of the door leaf, and the balance wheel can be eliminated to reduce the load on the load-bearing drive mechanism, ensuring that the lower part of the door leaf is reliably constrained.

[0006] In a first aspect, the present invention discloses a lower swing guide device, including a swing arm seat, a Y-direction drive cam and an X-direction drive cam rotatably disposed in the swing arm seat; wherein, the Y-direction drive cam and the X-direction drive cam are an integral structure or the Y-direction drive cam and the X-direction drive cam are fixedly connected in a defined phase relationship. The swing arm is rotatably provided inside the swing arm seat. The swing arm is connected to a first connecting member that is movably connected to the Y-axis drive cam. The swing arm is provided with a guide locking member that cooperates with the lower guide rail of the door leaf. When the Y-axis drive cam is driven, the guide locking member guides the X-axis movement of the lower part of the door leaf and gives the Y-axis movement component of the lower part of the door leaf, so that the lower part of the door leaf can be inserted in a non-vertical direction. The swing arm seat is rotatably provided with a stop arm, and the stop arm is connected to a second connecting member that is movably connected to the X-direction drive cam. The stop arm is provided with a stop member; the stop member inhibits the separation of the door leaf along the length of the vehicle during the insertion process and after the door leaf is inserted into place.

[0007] Furthermore, the Y-axis drive cam includes a first rising section and a first transition section connected in sequence, and the X-axis drive cam includes a second rising section and a second transition section connected in sequence; When the Y-axis drive cam rotates and drives the first connecting member to move in the first rising section and the first transition section, the swing arm drives the guide locking member to guide the X-axis movement of the lower guide rail of the door leaf; and drives the lower guide rail of the door leaf to perform Y-axis sliding movement. When the first connector moves within the first transition section, the second connector moves within the second transition section, so that the movement trajectory of the stop and the movement trajectory of the guide locking member are coordinated with the track of the lower part of the door leaf.

[0008] Furthermore, the guide locking member is located inside the lower guide rail of the door leaf, and the stop member is located outside the lower guide rail of the door leaf; When the second connector moves within the second transition section of the X-direction drive cam, the stop approaches the end of the lower door guide rail outside the door leaf so as to contact the end of the lower door guide rail when the X-direction movement of the door leaf deviates from the set trajectory, thereby suppressing the separation of the lower door guide rail along the vehicle length direction.

[0009] Furthermore, the X-direction drive cam also includes a base circle segment, which is disposed at the end of the second rising section away from the second transition section; When the X-direction drive cam is driven, the second connecting member moves within the base circle section, the second rising section, or the second transition section. When the second connecting member moves within the base circle section, the stop arm does not change position.

[0010] Furthermore, the Y-axis drive cam includes a first locking section, and the X-axis drive cam includes a second locking section; When the first connector enters the first locking section, the second connector enters the second locking section; when the first connector is in the first locking section, the swing arm is locked; when the second connector is in the second locking section, the stop arm is locked. The stop is located at the end of the lower guide rail outside the door leaf and contacts the end of the lower guide rail to suppress the separation of the lower guide rail along the length of the vehicle.

[0011] Furthermore, the door leaf is inserted in an angle of 20-60°.

[0012] Furthermore, a cam drive shaft is rotatably mounted inside the swing arm seat, and a cam component is fixedly connected to the cam drive shaft. When the Y-axis drive cam and the X-axis drive cam are an integral structure, the Y-axis drive cam and the X-axis drive cam are arranged on the cam component; When the Y-axis drive cam and the X-axis drive cam are separate structures, the Y-axis drive cam and the X-axis drive cam are fixed to the cam drive shaft with a defined phase relationship.

[0013] Furthermore, the guide locking element is a first roller.

[0014] Furthermore, the stop is a second roller.

[0015] In a second aspect, the present invention discloses a sliding door, comprising a door leaf, a load-bearing drive mechanism, a vertical synchronizing rod, and a lower swing guide device as described in any one of the first aspects, wherein the guide locking member in the lower swing guide device is connected to the lower guide rail of the door leaf; The output end of the load-bearing drive mechanism is connected to the door leaf to drive the door leaf to move. The load-bearing drive mechanism is connected to the vertical synchronizing rod to drive the Y-axis drive cam and the X-axis drive cam to rotate through the vertical synchronizing rod.

[0016] To achieve the above objectives, the present invention is implemented using the following technical solution: When the guiding device of the present invention is driven to rotate, the Y-direction driving cam, under the action of the first connecting member and the swing arm, guides the locking member to guide the X-direction movement of the lower part of the door leaf, and gives the Y-direction movement component of the lower part of the door leaf, creating conditions for the lower part of the door leaf to be inserted in a non-vertical direction. This design allows the lower part of the door leaf to be inserted in a non-vertical direction. A lower stop pin can be configured at the lower part of the front windshield, thereby achieving vehicle width direction constraint (Y-direction constraint) at the lower part of the front windshield. The rear stop of the door is guided by the locking member and the stop member to be constrained in both the X and Y directions, suppressing the X-direction separation between the front stop of the door leaf or between the door leaf and the vehicle body and the Y-direction separation between the lower stop of the door leaf and the vehicle body. Under the strong negative pressure state when the door is running at high speed, the rigidity of the door leaf is guaranteed, creating conditions for the door to achieve negative pressure sealing performance. Through the design of the X-direction drive cam, when the X-direction drive cam is driven to rotate, the second connecting member and the stop arm act to prevent the door leaf lower guide rail from separating along the vehicle length direction during and after the door leaf is inserted. This design enables the stop arm to achieve coordinated action with the X-direction movement of the door leaf, replacing the balance wheel to press the door leaf in the X direction and avoiding harmful vertical loads. Furthermore, the X-direction drive of the stop arm on the lower guide rail of the door leaf at the end of the insertion movement suppresses the bending moment of the rubber strip friction on the load-bearing structure beam, making the beam guide system move more smoothly. When the vehicle body entrance deforms to a certain extent, the stop arm can force the lower parts of the two door leaves to remain pressed together along the X direction, preventing the lower parts of the door leaves from separating due to such deformation, thereby ensuring the system's sealing performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the swing guide device; Figure 2 This is a schematic diagram of the cam trajectory; Figure 3 This is a schematic diagram showing the relative positions of the rocker arm and the cam. Figure 4 A schematic diagram showing the relative positions of the stop arm and the cam; Figure 5 A schematic diagram showing the initial position of the swing guide device after installation; Figure 6 This is a schematic diagram showing the relative positions of each component when the second roller reaches the base circle segment; Figure 7 This is a schematic diagram showing the relative positions of each component when the second roller reaches the second rising section. Figure 8 This is a schematic diagram showing the relative positions of each component when the pin reaches the initial point of the first locking section. Figure 9 This is a schematic diagram showing the relative positions of each component when the pin reaches the end of the first locking section. Figure 10 This is a schematic diagram of the door leaf front stop lower locking device.

[0018] Wherein: 1-Swing arm seat; 2-Swing arm; 201-Pin shaft; 202-Swing arm body; 203-First roller; 3-Cam component; 301-Y-direction drive cam; 301a-First rising section; 301b-First transition section; 301c-First locking section; 302-X-direction drive cam; 302a-Base circle section; 302b-Second rising section; 302c-Second transition section; 302d-Second locking section; 4-Cam drive shaft; 5-Swing arm shaft; 6-Stop arm; 601-Second roller; 602-Stop arm body; 603-Stop wheel; 7-Stop arm shaft; 8-Reset torsion spring; 9-Door leaf lower guide rail; 10-Motion trajectory of the outermost point of the door leaf lower guide rail; 11-Lower stop pin; 12-Sill. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0020] It should be noted that in the description of this invention, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and do not require the invention to be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the invention. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this invention refer to the directions shown in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0021] This invention provides a lower swing guide device that eliminates the drawbacks of two types of door constraint systems. It allows for simple lower stop pins to achieve constraint at the front of the door leaf, eliminates the need for a balance wheel, reduces the load on the load-bearing drive mechanism, and ensures reliable constraint of the lower part of the door leaf. Furthermore, it can lock itself, shortening the lower load-bearing chain and improving the system's equivalent rigidity.

[0022] To achieve the above objectives, the present invention employs a lower swing guide device in the following manner, such as... Figures 1-10 As shown, the lower swing guide device includes a swing arm seat 1, a Y-axis drive cam 301 and an X-axis drive cam 302 rotatably disposed within the swing arm seat 1; wherein, the Y-axis drive cam 301 and the X-axis drive cam 302 are either an integral structure or fixedly connected in a defined phase relationship; a swing arm 2 is rotatably disposed within the swing arm seat 1, and a first connecting member is connected to the swing arm 2 and movably connected to the Y-axis drive cam 301; the swing arm 2 is provided with a guide that cooperates with the lower guide rail 9 of the door leaf. The locking element is guided by a Y-axis drive cam 301, which guides the locking element to move the lower part of the door leaf in the X direction and provides the Y-axis movement component of the lower part of the door leaf, creating conditions for the lower part of the door leaf to be inserted in a non-vertical direction. A stop arm 6 is rotatably provided inside the swing arm seat 1. A second connecting member that is movably connected to the X-axis drive cam 302 is connected to the stop arm 6. A stop is provided on the stop arm 6. The stop inhibits the separation of the door leaf along the length of the vehicle during the insertion process and after the door leaf is inserted.

[0023] When in use, the swing guide device is installed in the sliding door system. The guide locking element cooperates with the lower guide rail 9 of the door leaf. When the guide locking element moves, it guides the door leaf through the lower guide rail. In this invention, the installation position of the guide locking element must ensure that the compression of the sealing strip is within a set range when the door leaf is locked. In one embodiment, the guide locking element is installed inside the lower guide rail 9 of the door leaf; this design allows for better guidance of the door leaf.

[0024] During operation, when the Y-axis drive cam 301 is driven, the first connecting member moves within the Y-axis drive cam 301 under its guidance. The first connecting member then drives the swing arm 2 to move. The guide locking member on the swing arm 2 guides the X-axis movement of the lower part of the door leaf and causes the door leaf's sliding motion trajectory to be inserted in a non-perpendicular direction. This design allows for the configuration of a lower gear pin at the bottom of the windshield, thereby achieving vehicle width constraint at the bottom of the windshield (e.g., ...). Figure 10 As shown, the lower stop pin 11 constrains the front door sill 12, while the guide locking component constrains the lower part of the rear door in the vehicle width direction. After constraining in the vehicle width direction, the constraint system has sufficient rigidity under the strong negative pressure state of the door at high speed, creating conditions for the door to achieve negative pressure sealing performance.

[0025] When the Y-axis drive cam 301 is driven, the X-axis drive cam 302 is also driven. Under the guidance of the X-axis drive cam 302, the second connecting member moves within the X-axis drive cam 302, which in turn drives the stop arm 6 to move. The movement trajectory of the stop member on the stop arm 6 is coordinated with the lower guide rail 9 of the door leaf. When the door leaf is pulled along under the guidance of the locking member, if the X-axis movement stroke of the door leaf deviates from the set value, the stop member will provide an X-axis force to the lower guide rail of the door leaf, and finally press the door leaf. Since the pressing force is in the X direction, it will act directly on the rubber strip, thus avoiding vertical loads that are harmful to the load-bearing mechanism.

[0026] During and after the door leaf is inserted, the stop prevents the lower guide rail of the door leaf from separating along the length of the vehicle. This design enables the stop arm to coordinate with the X-axis movement of the door leaf, replacing the balance wheel to press the door leaf in the X-axis and avoiding harmful vertical loads. Furthermore, the X-axis drive of the stop arm on the lower guide rail of the door leaf at the end of the insertion movement suppresses the bending moment of the rubber strip friction on the crossbeam of the load-bearing structure, making the movement of the crossbeam guide system smoother.

[0027] After the door leaf is inserted into place, the stop can continue to provide X-direction force to the lower guide rail of the door leaf, which can enhance the adaptability to the deformation of the vehicle body. When the vehicle body entrance undergoes a certain degree of deformation, the stop can force the lower parts of the two door leaves to remain pressed together along the X direction, preventing the lower parts of the door leaves from separating due to such deformation, thereby ensuring the system's sealing performance.

[0028] In a further embodiment, the Y-axis drive cam 301 is described in detail. The Y-axis drive cam 301 includes a first rising section 301a and a first transition section 301b connected in sequence. During operation, when the Y-axis drive cam 301 rotates, it drives the first connecting member to move within the first rising section 301a and the first transition section 301b. The swing arm drives the guide locking member to guide the X-axis movement of the lower part of the door leaf, so that the door leaf's sliding motion trajectory is inserted in a non-perpendicular direction.

[0029] The insertion angle of the door leaf's sliding motion trajectory is 20-60°, preferably 35°. This design does not hinder the installation of the lower stop pin at the front of the door leaf. Using the lower stop pin to constrain the front of the door leaf in the Y direction is simple and has a good constraint effect.

[0030] In a further embodiment of the present invention, the Y-direction drive cam 301 includes a first rising section 301a and a first transition section 301b connected in sequence, and the X-direction drive cam 302 includes a second rising section 302b and a second transition section 302c connected in sequence.

[0031] During operation, when the Y-axis drive cam 301 rotates, it drives the first connecting member to move within the first rising section 301a and the first transition section 301b. The swing arm then drives the guide locking member to guide the X-axis movement of the lower part of the door leaf and provides a Y-axis movement component to the lower part of the door leaf, creating conditions for the lower part of the door leaf to be inserted in a non-perpendicular direction. When the Y-axis drive cam 301 is driven, the X-axis drive cam 302 is also driven simultaneously. The X-axis drive cam 302 drives the second connecting member to move. When the first connecting member moves within the first transition section 301b, the second connecting member moves within the second transition section 302c. The movement trajectory of the stop and the guide locking member are coordinated with the insertion trajectory of the lower part of the door leaf to suppress the separation of the lower guide rail along the vehicle length direction.

[0032] Furthermore, the guide locking member is located inside the lower guide rail 9 of the door leaf, and the stop member is located outside the lower guide rail 9 of the door leaf; when the second connector is in the second transition section 302c, the stop member is close to the end of the lower guide rail of the door leaf. When the door leaf moves in the X direction and deviates from the set trajectory, the stop member and the end of the lower guide rail 9 of the door leaf come into contact to generate a driving force on the lower guide rail of the door leaf and suppress the separation of the lower guide rail of the door leaf along the length of the vehicle.

[0033] In a further embodiment, the Y-axis drive cam 301 further includes a first locking section 301c, and a first rising section 301a, a first transition section 301b, and the first locking section 301c are arranged sequentially. The X-axis drive cam 302 further includes a second locking section 302d, and a second rising section 302b, a second transition section 302c, and the second locking section 302d are arranged sequentially.

[0034] When the first connecting member reaches the end of the first transition section 301b, and the lower door panel stops moving, the crossbeam carrying the drive mechanism still retains a small amount of travel, allowing the Y-axis drive cam 301 and X-axis drive cam 302 to continue rotating. The rotation of the Y-axis drive cam 301 can drive the first connecting member into the first locking section 301c, thereby locking the swing arm 2. The rotation of the X-axis drive cam 302 can drive the second connecting member into the second locking section 302d, thereby locking the stop arm 6.

[0035] When the second connector is in the second locking section 302d, the stop is located at the end of the lower door guide rail 9 outside and in contact with the end of the lower door guide rail 9 to suppress the separation of the lower door guide rail along the vehicle length direction.

[0036] Compared with some current constraint solutions, the solution of the present invention has better adaptability to vehicle body deformation. It can continuously generate driving force on the end of the lower guide rail of the door leaf at the end of closing and after closing, ensuring that the lower part of the door leaf is not easy to separate, thereby ensuring the sealing performance of the lower part of the system.

[0037] Furthermore, the X-direction drive cam also includes a base circle section 302a, and the base circle section 302a, the second rising section 302b, the second transition section 302c, and the second locking section 302d are arranged sequentially.

[0038] When the door starts closing from its fully open position, and the crossbeam supporting the drive mechanism does not move in the Y direction, the lower part of the door panel moves in the X direction, but there is no movement in the Y direction. At this time, the second connecting member is within the base circle segment 302a, and the stop arm does not change position in this segment.

[0039] like Figure 6 and Figure 7 As shown, based on this design, in the initial stage of the door stop movement, the stop arm remains stationary, and the end of the lower guide rail 9 of the door leaf can move from the rear of the stop wheel 603 to the front of the stop wheel 603, so that the trajectory can be coordinated.

[0040] In some embodiments, the base circle segment 302a, the second rising segment 302b, the second transition segment 302c, and the second locking segment 302d are all curved, which allows the second connector to move more smoothly within it. Similarly, the first rising segment 301a, the first transition segment 301b, and the first locking segment 301c are all designed to be curved, which allows the first connector to move more smoothly.

[0041] In one embodiment of this application, a cam drive shaft 4 is rotatably provided inside the rocker arm seat 1, and a cam element 3 is fixedly connected to the cam drive shaft 4. When the Y-axis drive cam 301 and the X-axis drive cam 302 are an integral structure, the Y-axis drive cam 301 and the X-axis drive cam 302 are placed on the cam element 3; when the Y-axis drive cam 301 and the X-axis drive cam 302 are a separate structure, the Y-axis drive cam 301 and the X-axis drive cam 302 are fixedly connected to the cam drive shaft 4 with a defined phase relationship. The cam drive shaft 4 receives the driving torque from the vertical synchronizer and transmits it to the cam element 3, or transmits the driving torque of the vertical synchronizer to the Y-axis drive cam 301 and the X-axis drive cam 302.

[0042] It is worth noting that the cam drive shaft 4 in this invention is directly driven by the mechanism's power, eliminating the need for a separate power source and reducing system complexity. Since the Y-axis drive cam 301 and X-axis drive cam 302 are inherent features of the cam element 3 or structural components fixed to the cam drive shaft 4, the former can achieve both driving and locking functions for the rocker arm 2, and the latter can achieve both driving and locking functions for the stop arm 6. Therefore, neither the driving nor locking of the rocker arm 2 nor the stop arm 6 requires a separate power source.

[0043] In one embodiment of the present invention, the first connecting member connected to the swing arm 2 is a pin 201. The swing arm 2 also includes a swing arm body 202. The pin 201 is rotatably connected to the swing arm body 202 and is inserted into the Y-axis drive cam 301, moving along the cam trajectory. The guide locking member is a first roller 203. The guide locking member adopts the form of a roller, which can better cooperate with the lower guide rail 9 of the door leaf, and will not cause jamming during the movement of the lower guide rail 9.

[0044] The present invention will now be described through a detailed embodiment. This embodiment describes an integrated Y-axis drive cam 301 and X-axis drive cam 302 structure. The split Y-axis drive cam 301 and X-axis drive cam 302 structure will not be described in this embodiment.

[0045] A lower swing guide device includes a swing arm seat 1, a swing arm 2, a cam element 3, a cam drive shaft 4, a swing arm shaft 5, a stop arm 6, a stop arm shaft 7, and a return torsion spring 8. The cam element 3 is provided with a vehicle width direction drive cam (Y-direction drive cam 301) and a vehicle length direction drive cam (X-direction drive cam 302).

[0046] The cam drive shaft 4 is fixedly connected to the cam component 3 and rotatably connected to the rocker arm seat 1. The cam drive shaft 4 receives the driving torque from the vertical synchronizing rod and transmits it to the cam component 3. The rocker arm shaft 5 is rotatably connected to the rocker arm 2 and the rocker arm seat 1. The stop arm shaft 7 is fixedly connected to the rocker arm seat 1 and rotatably connected to the stop arm.

[0047] The pin 201 on the swing arm 2 is rotatably connected to the swing arm body 202 and inserted into the Y-axis drive cam 301, moving along the cam trajectory. A first roller 203 is fixed to the swing arm body. The first roller 203 cooperates with the lower guide rail 9 of the door leaf to guide the X-axis movement of the lower part of the door leaf and constrain the Y-axis movement. The Y-axis drive cam 301 is provided with a first rising section 301a, a first transition section 301b, and a first locking section 301c.

[0048] The stop arm 6 includes a second roller 601, a stop arm body 602, and a stop wheel 603. The stop arm body 602 has a second roller 601 and a stop wheel 603 rotatably connected to it. Under the action of the return torsion spring 8, the second roller 601 engages with the outer contour of the X-direction drive cam 302 of the cam member 3 and moves along the trajectory of the X-direction drive cam 302. The X-direction drive cam 302 is provided with a base circle section 302a, a second rising section 302b, a second transition section 302c, and a second locking section 302d.

[0049] like Figure 5 As shown, when the car door starts closing from its fully open position, and the crossbeam supporting the drive mechanism does not move in the Y direction, the swing arm drive shaft 4 remains stationary in its initial position. The cam 3, swing arm 2, and stop arm 6 are all in their initial positions. The lower part of the door panel moves in the X direction, but there is no movement in the Y direction. At this time, the second roller 601 is in the initial position of the base circle segment of the cam 302, and the pin 201 is in the initial position of the first rising segment 301a.

[0050] like Figure 6 , 7 As shown in Figure 8, when the door panel continues to move in the X direction and the crossbeam of the mechanism begins to move in the Y direction, the crossbeam drives the vertical synchronizing rod to rotate, which in turn drives the cam drive shaft 4 and the cam element 3 to rotate. At this time, driven by the first rising section 301a, the swing arm 2 rotates inward towards the vehicle. The X-direction position of the lower part of the door panel is determined by the X-direction position of the door frame of the upper supporting mechanism, while the Y-direction position is determined by the Y-direction position of the first roller 203 of the swing arm 2. Therefore, by adjusting the curve trajectory of the X-drive cam groove 301, the sliding motion trajectory of the lower part of the door panel can be customized to meet the set insertion direction requirements, such as... Figures 6-9 As shown, the movement trajectory 10 of the outermost point of the lower guide rail of the door leaf is displayed. At the same time, the second roller 601 is in the base circle segment 302a of the X-direction drive cam 302, so the stop arm 6 remains stationary.

[0051] Cam 3 continues to rotate as the spool moves. The contact point between the Y-axis drive cam 301 and the pin 201 remains within the rising section 301a, thus driving the rocker arm 2 to continue rotating. The contact point between the X-axis drive cam 302 and the second roller 601 enters the second rising section 302b, driving the stop arm 6 to begin rotating.

[0052] As the cam 3 continues to rotate, the contact point between the Y-axis drive cam 301 and the pin 201 enters the first transition section 301b, and the swing arm 2 approaches its swing endpoint. The contact point between the X-axis drive cam 302 and the second roller 601 also enters the second transition section 302c, and the stop arm 6 continues to rotate. During this process, the trajectory design of the X-axis drive cam 302 ensures that the stop wheel 603 and the end trajectory of the lower guide rail 9 of the door leaf are coordinated. If the lower part of the door leaf deviates from the designed trajectory for any reason, the stop wheel 603 will generate a driving force F on the end of the lower guide rail 9 of the door leaf, thereby making the X-axis movement of the door leaf conform to the theoretical trajectory.

[0053] like Figure 8 and 9 As shown, when the lower part of the door panel stops moving, the crossbeam supporting the drive mechanism still retains a small amount of travel, continuing to drive the cam 3 to rotate. Both the Y-axis drive cam 301 and the X-axis drive cam 302 enter the locking section (the pin 201 enters the first locking section 301c, and the second roller 601 enters the second locking section 302d), thereby locking the rear door panel in both the X and Y directions.

[0054] Since the aforementioned insertion direction can be set to approximately 35 degrees, the front barrier of the door can be constrained in the Y direction at the bottom of the front barrier using a simple stop pin.

[0055] The actions involved in opening the door are the opposite.

[0056] In summary, the lower swing guide device of the present invention has the following advantages: (1) The present invention enables the lower part of the door leaf to move in a direction of nearly 35 degrees through the trajectory design of the Y-direction driving cam, so that the front of the door leaf can be constrained in the Y direction by a simple lower stop pin.

[0057] (2) The present invention adopts the trajectory design of the X-direction drive cam, which enables the stop arm to achieve coordinated action with the X-direction movement of the door leaf, replacing the balance wheel to press the door leaf in the X-direction and avoiding harmful vertical loads. In addition, the X-direction drive of the stop arm on the lower guide rail of the door leaf at the end of the sliding motion suppresses the bending moment of the rubber strip friction on the crossbeam of the load-bearing structure, making the movement of the crossbeam guide system smoother.

[0058] (3) The X-direction drive cam and Y-direction drive cam of the present invention have a locking function, so that the load on the lower part of the door leaf can be transferred to the vehicle body through the lower swing guide device of the present invention, which shortens the load-bearing chain, improves the equivalent stiffness of the system, and improves the sealing performance of the system.

[0059] (4) The present invention has enhanced adaptability to vehicle body deformation. When the vehicle body entrance undergoes a certain degree of deformation, the stop arm in the present invention can force the lower parts of the two door panels to remain pressed together along the X direction, preventing the lower parts of the door panels from separating due to such deformation, thereby ensuring the system's sealing performance.

[0060] (5) In this invention, the swing arm assembly is driven by the mechanism power, avoiding the need to add an independent power source and greatly reducing the complexity of the system.

[0061] In one embodiment, the present invention also discloses a sliding door, which includes a door leaf, a load-bearing drive mechanism, a vertical synchronizing rod, and a lower swing guide device according to any of the above embodiments. The guide locking member in the lower swing guide device is connected to the lower guide rail of the door leaf. The output end of the load-bearing drive mechanism is connected to the door leaf to drive the door leaf to move. The crossbeam in the load-bearing drive mechanism is connected to the vertical synchronizing rod to drive the Y-axis drive cam 301 and the X-axis drive cam 302 to rotate through the vertical synchronizing rod.

[0062] As is known from common technical knowledge, this invention can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this invention or its equivalents are included in this invention.

Claims

1. A lower swing guide device, characterized in that, It includes a rocker arm seat, a Y-axis drive cam and an X-axis drive cam rotatably disposed within the rocker arm seat; wherein the Y-axis drive cam and the X-axis drive cam are an integral structure or the Y-axis drive cam and the X-axis drive cam are fixedly connected in a defined phase relationship; The swing arm is rotatably provided inside the swing arm seat. The swing arm is connected to a first connecting member that is movably connected to the Y-axis drive cam. The swing arm is provided with a guide locking member that cooperates with the lower guide rail of the door leaf. When the Y-axis drive cam is driven, the guide locking member guides the X-axis movement of the lower part of the door leaf and gives the Y-axis movement component of the lower part of the door leaf, so that the lower part of the door leaf can be inserted in a non-vertical direction. The swing arm seat is rotatably provided with a stop arm, and the stop arm is connected to a second connecting member that is movably connected to the X-direction drive cam. The stop arm is provided with a stop member; the stop member inhibits the separation of the door leaf along the length of the vehicle during the insertion process and after the door leaf is inserted into place.

2. The lower swing guide device according to claim 1, characterized in that, The Y-axis drive cam includes a first rising section and a first transition section connected in sequence, and the X-axis drive cam includes a second rising section and a second transition section connected in sequence. When the Y-axis drive cam rotates and drives the first connecting member to move in the first rising section and the first transition section, the swing arm drives the guide locking member to guide the X-axis movement of the lower guide rail of the door leaf; and drives the lower guide rail of the door leaf to perform Y-axis sliding movement. When the first connector moves within the first transition section, the second connector moves within the second transition section, so that the movement trajectory of the stop and the movement trajectory of the guide locking member are coordinated with the track of the lower part of the door leaf.

3. The lower swing guide device according to claim 2, characterized in that, The guide locking member is located inside the lower guide rail of the door leaf, and the stop member is located outside the lower guide rail of the door leaf; When the second connector moves within the second transition section of the X-direction drive cam, the stop approaches the end of the lower door guide rail outside the door leaf so as to contact the end of the lower door guide rail when the X-direction movement of the door leaf deviates from the set trajectory, thereby suppressing the separation of the lower door guide rail along the vehicle length direction.

4. The lower swing guide device according to claim 2, characterized in that, The X-axis drive cam further includes a base circle segment, which is disposed at the end of the second rising section away from the second transition section; When the X-direction drive cam is driven, the second connecting member moves within the base circle section, the second rising section, or the second transition section. When the second connecting member moves within the base circle section, the stop arm does not change position.

5. The lower swing guide device according to claim 1, characterized in that, The Y-axis drive cam includes a first locking section, and the X-axis drive cam includes a second locking section; When the first connector enters the first locking section, the second connector enters the second locking section; when the first connector is in the first locking section, the swing arm is locked; when the second connector is in the second locking section, the stop arm is locked. The stop is located at the end of the lower guide rail outside the door leaf and contacts the end of the lower guide rail to suppress the separation of the lower guide rail along the length of the vehicle.

6. The lower swing guide device according to claim 1, characterized in that, The door leaf should be inserted at an angle of 20-60°.

7. The lower swing guide device according to claim 1, characterized in that, A cam drive shaft is rotatably mounted inside the swing arm seat, and a cam component is fixedly connected to the cam drive shaft. When the Y-axis drive cam and the X-axis drive cam are an integral structure, the Y-axis drive cam and the X-axis drive cam are arranged on the cam component; When the Y-axis drive cam and the X-axis drive cam are separate structures, the Y-axis drive cam and the X-axis drive cam are fixed to the cam drive shaft with a defined phase relationship.

8. The lower swing guide device according to any one of claims 1-7, characterized in that, The guide locking element is the first roller.

9. The lower swing guide device according to any one of claims 1-7, characterized in that, The stop is the second roller.

10. A sliding door, characterized in that, It includes a door leaf, a load-bearing drive mechanism, a vertical synchronizing rod, and a lower swing guide device as described in any one of claims 1-9, wherein the guide locking element in the lower swing guide device is connected to the lower guide rail of the door leaf; The output end of the load-bearing drive mechanism is connected to the door leaf to drive the door leaf to move. The load-bearing drive mechanism is connected to the vertical synchronizing rod to drive the Y-axis drive cam and the X-axis drive cam to rotate through the vertical synchronizing rod.

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