Connecting mechanism of trackless side sliding door, trackless side sliding door and vehicle

Abstract

The present invention relates to a connection mechanism for a trackless side sliding door, a trackless side sliding door, and a vehicle. The connection mechanism includes an upper door hinge and a lower door hinge. The upper door hinge is provided with a connecting rod, and the ends of the connecting rod are respectively provided with a door riveting axis and a vehicle body riveting axis. The lower door hinge is provided with a vehicle body side mounting bracket and a door side mounting bracket. An electric telescopic strut, a driven connecting rod, and a telescopic connecting rod are provided between the vehicle body side mounting bracket and the door side mounting bracket. The ends of the driven connecting rod and the telescopic connecting rod are respectively hinged to the vehicle body side mounting bracket and the door side mounting bracket. The ends of the electric telescopic strut are respectively hinged to the telescopic connecting rod and the vehicle body side mounting bracket. The present invention only requires one drive and can control a two-step motion trajectory, thus saving the drive and effectively reducing costs.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile accessories, and in particular to a connecting mechanism for a trackless side sliding door, a trackless side sliding door and a vehicle. Background Art

[0002] As living standards continue to improve, people's demand for cars is increasing, and at the same time, their performance requirements are also becoming higher and higher, such as the desire for easy entry and exit. However, in actual production, it is usually necessary to ensure a spacious interior space while not compromising easy entry and exit due to the compactness of the vehicle body. In other words, it is necessary to meet both space requirements and styling requirements, and above all, to achieve technical feasibility.

[0003] Sliding doors, also known as side-sliding doors, occupy a small space when open and slide along the vehicle body, allowing for easy entry and exit within a limited space, facilitating passenger entry and exit, as well as loading and unloading of items. Typically, a side-sliding door consists of guide rails (typically upper, middle, and lower) fixed to the vehicle's side panels, and a sliding door body that moves along the guide rails. Hinge rollers on the sliding door body roll along the guide rails, enabling the door to open, move, and close. However, the guide rails do occupy a considerable amount of space.

[0004] In related technology, CN114454696A discloses a trackless sliding door mechanism for vehicles. This mechanism utilizes a main traction arm, an auxiliary traction arm, and a guide mechanism to eliminate the constraints imposed by the guide rails, allowing the door to slide open backward and close smoothly forward. However, the active traction arm is located in the middle of the door, occupying a significant amount of space in the passenger compartment, resulting in poor ride comfort. CN114961488A discloses a trackless sliding door linkage mechanism, comprising: a sliding door, a first link, a second link, a third link, a fourth link, a fifth link, a sixth link, a first mounting plate mounted on a vehicle door frame, a second mounting plate, and a fixing seat; the sliding door has a closed state and an open state; when the sliding door is in the closed state, the angle between the third link and the fourth link, which are away from the second pivot, is less than 180 degrees; when the sliding door is in the open state, the angle between the third link and the fourth link, which are away from the second pivot, is greater than 180 degrees. When the first link and the third link have the same swing amplitude and angle, the sliding door has a greater sliding travel in the front-to-rear direction of the vehicle. However, this trackless sliding door linkage mechanism requires more drives and more links, resulting in higher costs. Summary of the Invention

[0005] One of the purposes of the present invention is to provide a connection mechanism for a trackless side sliding door to solve the problems in the prior art that some components of the mechanical structure of the trackless side sliding door need to occupy a large space in the passenger compartment, resulting in poor riding comfort of the vehicle and requiring more drives and connecting rods, resulting in high costs; the second purpose is to provide a trackless side sliding door for a vehicle; and the third purpose is to provide a vehicle.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] In some embodiments of the present invention, the present invention provides a connection mechanism for a trackless side sliding door, the connection mechanism for the trackless side sliding door comprising:

[0008] The upper hinge of the vehicle door is provided with a connecting rod, and the two ends of the connecting rod are respectively provided with a door riveting axis and a vehicle body riveting axis; and

[0009] The lower hinge of the vehicle door is provided with a vehicle body side mounting bracket and a vehicle door side mounting bracket. An electric telescopic strut, a driven link and a telescopic link are provided between the vehicle body side mounting bracket and the vehicle door side mounting bracket. The two ends of the driven link and the telescopic link are respectively hinged to the vehicle body side mounting bracket and the vehicle door side mounting bracket. The two ends of the electric telescopic strut are respectively hinged to the telescopic link and the vehicle body side mounting bracket.

[0010] The principle of the connection mechanism of the trackless side sliding door of the present invention is as follows: by adding an upper door hinge and a lower door hinge, the upper door hinge is arranged to be provided with a connecting rod, and the two ends of the connecting rod are respectively arranged to be provided with a door riveting shaft and a vehicle body riveting shaft, the lower door hinge is arranged to be provided with a vehicle body side mounting bracket and a vehicle door side mounting bracket, an electric telescopic strut, a driven connecting rod and a telescopic connecting rod are arranged between the vehicle body side mounting bracket and the vehicle door side mounting bracket, and the two ends of the driven connecting rod and the telescopic connecting rod are respectively hinged to the vehicle body side mounting bracket and the door side mounting bracket, and the two ends of the electric telescopic strut are respectively hinged to the telescopic connecting rod and the vehicle body side mounting bracket, so as to drive the telescopic connecting rod and the vehicle body side mounting bracket to move through the electric telescopic strut, thereby driving the driven connecting rod hinged to the vehicle body side mounting bracket to move, thereby controlling the opening (including opening from a closed state to a slightly open state and from a slightly open state to a fully open state) and closing of the vehicle door. Unlike the prior art, the present invention achieves both door opening and closing (including opening from a closed state to a slightly open state and from a slightly open state to a fully open state) without the need for guide rails. Therefore, the connection mechanism of the trackless sliding door of the present invention lacks exposed guide rails, enhancing the vehicle's visual appeal and avoiding rust issues caused by exposed guide rails. Using the connection mechanism of the present invention to control the opening of the vehicle door, the door's motion trajectory can be divided into two stages (specifically, opening from a closed state to a slightly open state and opening from a slightly open state to a fully open state). There is no gap between the front and rear doors, effectively resolving the issue of visual transparency at the gap between the front and rear doors. Furthermore, while each movement typically requires a driver, the connection mechanism of the present invention requires only a single driver (i.e., an electrically operated telescopic strut) to control both movement stages (i.e., opening from a closed state to a slightly open state and from a slightly open state to a fully open state), thus eliminating drivers and reducing costs.

[0011] In some embodiments of the present invention, the vehicle door upper hinge further includes a connecting rod mounting bracket, and the vehicle body riveted shaft is connected to the connecting rod mounting bracket.

[0012] In some embodiments of the present invention, the vehicle body side mounting bracket and the vehicle door side mounting bracket are both provided with a plurality of fixing bolts.

[0013] In some embodiments of the present invention, both ends of the driven link and the telescopic link are hinged to the vehicle body side mounting bracket and the door side mounting bracket respectively through pins.

[0014] In some embodiments of the present invention, the telescopic link includes a front end and a rear end, one end of the front end is hinged to the door side mounting bracket, and the other end is slidingly connected to one end of the rear end, and the other end of the rear end is hinged to the vehicle body side mounting bracket.

[0015] In some embodiments of the present invention, a limit pin is provided at one end of the front end portion connected to the rear end portion, and a motion groove cooperating with the limit pin is provided on the side wall of the vehicle body side mounting bracket, the direction of the motion groove matches the moving trajectory of the limit pin when the vehicle door is slid, and the limit pin is inserted into the motion groove.

[0016] In the present invention, a limit pin that cooperates with the motion slide groove is provided at one end of the front end portion of the telescopic link connected to the rear end portion. When the door is sliding, the movement trajectory of the limit pin matches the direction of the motion slide groove provided on the side wall of the vehicle body side mounting bracket. The limit pin is inserted into the motion slide groove, which can limit the freedom of the telescopic link during movement, avoid the problem of poor balance stability caused by excessive freedom of the telescopic link during movement, and thus improve the stability of the trackless side sliding door during opening and closing.

[0017] In some embodiments of the present invention, both ends of the electric telescopic support rod are hinged to the telescopic connecting rod and the vehicle body side mounting bracket through ball pins.

[0018] In some embodiments of the present invention, the present invention further provides a trackless side sliding door for a vehicle, the trackless side sliding door for a vehicle comprising:

[0019] door; and

[0020] As described above, the upper door hinge is arranged at the top of the door body and is connected to the door body through a door riveting shaft, and the lower door hinge is arranged at the bottom of the door body and is connected to the door body through a door side mounting bracket.

[0021] In some embodiments of the present invention, the vehicle trackless sliding door further comprises:

[0022] The upper door lock catch and the lower door lock catch are respectively arranged on the upper part and the lower part of one side of the door body.

[0023] In some embodiments of the present invention, the present invention further provides a vehicle, comprising:

[0024] vehicle body; and

[0025] As described above, the vehicle trackless side sliding door, the vehicle body riveted shaft and the vehicle body side mounting bracket are respectively connected to the vehicle body.

[0026] In some embodiments of the present invention, the vehicle further comprises:

[0027] The upper and lower door latches and the lower door latches are respectively arranged on the upper and lower parts of one side of the door body; and

[0028] The upper door lock hook and the lower door lock hook are matched with the upper door lock catch and the lower door lock catch respectively, and are both arranged on the vehicle body.

[0029] The present invention adds a lower door catch, an upper door catch, a lower door hook, and an upper door hook. The upper door hook is configured to cooperate with the upper door catch, and the lower door hook cooperates with the upper door catch. The cooperation between the lower door hook and the lower door catch, and the cooperation between the upper door hook and the upper door catch, enables the door to be locked and unlocked. This optimizes two door locks into hooks, whereas conventional trackless sliding doors typically require three door locks. Vehicles employing the present invention only require one door lock, reducing costs.

[0030] In some embodiments of the present invention, the telescopic link includes a front end and a rear end, one end of the front end is hinged to the door side mounting bracket, and the other end is slidingly connected to one end of the rear end, and the other end of the rear end is hinged to the vehicle body side mounting bracket.

[0031] Beneficial effects of the present invention:

[0032] The present invention has no exposed guide rails on its exterior surface, which can enhance visual effects and effectively avoid the problem of rust on the exposed guide rails.

[0033] The present invention only requires one drive and can control two-step motion trajectories, thus saving the drive and effectively reducing the cost.

[0034] Existing ordinary trackless sliding doors usually require three door locks, but the present invention optimizes two door locks into lock hooks, only one door lock is required, which can reduce costs.

[0035] In the present invention, the movement trajectory of the trackless sliding door is divided into two steps, which can effectively solve the appearance perspective problem at the gap between the front and rear doors.

[0036] The connecting rod of the upper hinge of the present invention is coaxial with the driven connecting rod of the lower hinge. The upper hinge has a simple structure and can effectively improve the stability of the door body during opening and closing. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 Schematic diagram of the motion trajectory of the lower hinge of the car door;

[0038] Figure 2 Schematic diagram of the motion trajectory of the limit pin;

[0039] Figure 3 A schematic diagram of the relative positions of the lock pin and the upper lock hook or the lower lock hook of the vehicle door;

[0040] Figure 4 This is a schematic diagram of the structure of the hinge on the car door;

[0041] Figure 5 This is a schematic diagram of the structure of the vehicle body side mounting bracket;

[0042] Figure 6 It is a structural diagram of the lower hinge of the door;

[0043] Figure 7 This is a cross-sectional view of the lower hinge of the door;

[0044] Figure 8 Schematic diagram of the structure of the telescopic connecting rod;

[0045] Figure 9 is a schematic diagram of a door closed state;

[0046] Figure 10 This is a schematic diagram of a vehicle door in a slightly open state;

[0047] Figure 11 This is a schematic diagram of the door fully open state;

[0048] Figure 12 This is a structural diagram of a trackless side sliding door for a vehicle;

[0049] Figure 13 It is a structural schematic diagram of the lower door lock, upper door lock, lower door lock hook and upper door lock hook.

[0050] Reference numerals

[0051] 1-door upper hinge, 11-connecting rod, 12-connecting rod mounting bracket, 111-door riveting axis, 112-body riveting axis;

[0052] 2 - lower door hinge, 21 - body side mounting bracket, 211 - motion slide, 22 - door side mounting bracket, 23 - electric telescopic support rod, 231 - ball stud, 232 - ball stud mounting hole, 24 - driven connecting rod, 25 - telescopic connecting rod, 251 - front end, 2511 - limit pin, 252 - rear end, 253 - telescopic connecting rod motion stroke, 26 - pin shaft;

[0053] 3- portal body;

[0054] 4- Upper door lock;

[0055] 5- upper door lock hook, 51- first fixing part, 52- first lock tongue;

[0056] 6-Lower door lock;

[0057] 7-lock hook at the lower part of the vehicle door, 71-second fixing part, 72-second lock tongue. DETAILED DESCRIPTION

[0058] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily appreciate the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the various details in this specification may be modified or altered based on different viewpoints and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended only to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0059] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, front, back, top, and bottom) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0060] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0062] It should be noted that the illustrations provided in the following embodiments are merely schematic illustrations of the basic concept of the present invention. Therefore, the illustrations only show components related to the present invention and are not drawn according to the number, shape, and size of components in actual implementation. In actual implementation, the type, quantity, and proportion of each component may be changed arbitrarily, and the component layout may also be more complex.

[0063] In one embodiment of the present invention, the present invention provides a connection mechanism for a trackless side sliding door, the connection mechanism for the trackless side sliding door comprising an upper door hinge and a lower door hinge;

[0064] The upper hinge of the door is provided with a connecting rod and a connecting rod mounting bracket, and the two ends of the connecting rod are respectively provided with a door riveting shaft and a body riveting shaft, and the body riveting shaft is connected to the connecting rod mounting bracket;

[0065] The lower door hinge is provided with a body side mounting bracket and a door side mounting bracket, and both the body side mounting bracket and the door side mounting bracket are provided with a plurality of fixing bolts;

[0066] An electric telescopic support rod, a driven connecting rod and a telescopic connecting rod are arranged between the vehicle body side mounting bracket and the vehicle door side mounting bracket;

[0067] The two ends of the driven link and the telescopic link are respectively hinged to the vehicle body side mounting bracket and the door side mounting bracket through pins;

[0068] The two ends of the electric telescopic support rod are respectively hinged to the telescopic connecting rod and the vehicle body side mounting bracket through ball pins;

[0069] The telescopic link includes a front end and a rear end, one end of the front end is hinged to the door side mounting bracket, and the other end is slidably connected to one end of the rear end, a limit pin is provided at the end of the front end connected to the rear end, a motion slide groove that cooperates with the limit pin is provided on the side wall of the vehicle body side mounting bracket, the direction of the motion slide groove matches the movement trajectory of the limit pin when the vehicle door is slid, the limit pin is inserted into the motion slide groove, and the other end of the rear end is hinged to the vehicle body side mounting bracket;

[0070] In another embodiment of the present invention, the present invention further provides a trackless sliding door for a vehicle, the trackless sliding door for a vehicle comprising a door body and the connecting mechanism as described above:

[0071] The upper door hinge is arranged at the top of the door body and is connected to the door body through a door riveting shaft. The lower door hinge is arranged at the bottom of the door body and is connected to the door body through a door side mounting bracket.

[0072] In another embodiment of the present invention, the vehicle trackless side sliding door further includes a lower door lock and an upper door lock, which are respectively arranged at the upper and lower parts of one side of the door body.

[0073] The working process of the vehicle trackless sliding door of the present invention is as follows:

[0074] like Figure 1 As shown, when the door is in the closed state, the first end of the electric telescopic support rod is located at position C1, and the second end of the electric telescopic support rod is fixed to the mounting bracket on the vehicle body side, and the state is D1;

[0075] The front end of the telescopic link is located at position a1, and the state is A1;

[0076] The first end of the vehicle body side mounting bracket is located at position b1, the second end of the vehicle body side mounting bracket is located at position b1, the state is B1 state, fixedly connected to the vehicle door, and the relative position in space is fixed; the first end of the driven connecting rod is located at position b1, the state is C1 state, such as Figure 2 As shown, the limit pin of the telescopic link is located at the front end of the E1 track line, as shown in Figure 3 As shown, the lock pin provided at the door is located at the front end of the F1 track line;

[0077] like Figure 1 As shown, in the first movement stage of the door (i.e., the stroke corresponding to E1, i.e., the door gradually opens from the closed state to the slightly open state), the electric telescopic support rod is energized and its length is retracted, and the first end of the electric telescopic support rod gradually moves from the position c1 to the position c2, and the state gradually changes from the D1 state to the D2 state, as shown in FIG. Figure 1 As shown, the motion slide restricts the motion trajectory of the limit pin of the telescopic link; through the pulling action of the electric telescopic support rod and the limiting action of the motion slide of the vehicle body side mounting bracket on the motion trajectory of the limit pin, the length of the telescopic link 25 is shortened to a state of stroke 0, the front end of the telescopic link gradually moves from the a1 position to the a2 position, and the state gradually changes from the A1 state to the A2 state, and the limit pin of the telescopic link gradually changes from the front end position of the E1 trajectory line (i.e. the left side) along the trajectory line to the rear end position of the E1 trajectory line (i.e. the middle position); one corner of the end of the vehicle body side mounting bracket away from the vehicle body gradually moves from the a1 position to the a2 position, and the other corner of the end of the vehicle body side mounting bracket away from the vehicle body gradually changes from the b1 position to the b2 position, and the state gradually changes from the B1 state to the B2 state, and is fixedly connected to the door body 1, driving the door to open slightly; the end of the driven link 24 hinged to the door side mounting bracket gradually moves from the b1 position to the b2 position, and the state gradually changes from the C1 state to the C2 state, as shown Figure 3 As shown, the lock pin set at the door gradually changes from the front end position of the F1 trajectory line along the trajectory line to the rear end position of the F1 trajectory line, and A2, B2, C2 and the vehicle body side mounting bracket form a parallelogram.

[0078] like Figure 1As shown, the door moves in the second stage (i.e., the door moves from the slightly open state to the fully open state), the electric telescopic strut continues to shrink in length, and the first end of the electric telescopic strut gradually changes from the c2 position to the c3 position, and the state gradually changes from the D2 state to the D3 state; the electric telescopic strut drives the front end of the telescopic link to gradually move from the a2 position to the a3 position, and the state gradually changes from the A2 state to the A3 state, and the limit pin of the telescopic link gradually moves along the trajectory line from the rear end position of the E1 trajectory line to the rear end position of the E2 trajectory line; the end of the door side mounting bracket hinged to the driven link gradually moves from the a2 position to the a3 position, and the end of the door side mounting bracket away from the driven link gradually moves from the b2 position to the b3 position, and the state is from the B2 state to the B3 state, fixedly connected to the door body, driving the door body to open to the maximum position; the first end of the driven link gradually moves from the b2 position to the b3 position, and the state gradually changes from the C2 state to the C3 state; as shown Figure 3 As shown, the lock pin provided at the vehicle door gradually moves along the trajectory line from the rear end position of the F1 trajectory line to the rear end position of the F2 trajectory line.

[0079] In another embodiment of the present invention, the present invention further provides a vehicle, which includes a vehicle body and the vehicle trackless side sliding door as described above, wherein the vehicle body riveted shaft and the vehicle body side mounting bracket are respectively connected to the vehicle body.

[0080] In another embodiment of the present invention, the vehicle further comprises a lower door striker and an upper door striker, a lower door lock hook and an upper door lock hook;

[0081] The lower door latch and the upper door latch are respectively arranged at the upper and lower parts of one side of the door body;

[0082] The lower door lock hook and the upper door lock hook are matched with the lower door lock catch and the upper door lock catch respectively, and the lower door lock hook and the upper door lock hook are both arranged on the vehicle body.

[0083] In another embodiment of the present invention, the telescopic link includes a front end and a rear end, one end of the front end is hinged to the door side mounting bracket, the other end is slidingly connected to one end of the rear end, and the other end of the rear end is hinged to the vehicle body side mounting bracket.

[0084] The present invention will be described in detail below by way of specific examples. It should also be understood that the following examples are only used to specifically illustrate the present invention and are not to be construed as limiting the scope of protection of the present invention. Any non-essential improvements and adjustments made by those skilled in the art based on the above contents of the present invention fall within the scope of protection of the present invention.

[0085] Typically, a side sliding door includes a guide rail (usually including an upper guide rail, a middle guide rail, and a lower guide rail) fixedly mounted on the side of the vehicle body and a side sliding door body that is assembled to move along the guide rail. The hinge rollers provided on the side sliding door body roll along the guide rail in the guide rail, thereby realizing the opening, movement, and closing of the side sliding door body. However, the guide rail takes up a large space. In the related art, some components of the mechanical structure of the vehicle's trackless side sliding door take up a large space in the passenger compartment, resulting in poor ride comfort, requiring more drives and connecting rods, and high costs. In response to the above problems, the present invention proposes a connection mechanism for a trackless side sliding door.

[0086] See also Figures 4 to 8 The connection mechanism of the trackless sliding door in the embodiment of the present invention includes an upper door hinge 1 and a lower door hinge 2.

[0087] Please continue reading Figure 4 The upper door hinge 1 is provided with a connecting rod 11 and a connecting rod mounting bracket 12. The connecting rod 11 is provided with a door riveting shaft 111 and a vehicle body riveting shaft 112 at each end. The vehicle body riveting shaft 112 is connected to the connecting rod mounting bracket 12. The door riveting shaft 111 is used to connect the connection mechanism of the trackless sliding door to the door body. The riveting shaft is prior art and will not be described in detail here.

[0088] Please continue reading Figure 5 The lower door hinge 2 is equipped with a body-side mounting bracket 21 and a door-side mounting bracket 22. Both the body-side mounting bracket 21 and the door-side mounting bracket 22 are equipped with a plurality of fixing bolts. The body-side mounting bracket 21 securely connects the lower door hinge 2 to the vehicle body via fixing bolts, while the door-side mounting bracket 22 secures the lower door hinge 2 to the vehicle door via fixing bolts. A motion slot 211 is provided on the side wall of the body-side mounting bracket 21. The fixing bolts are conventional and will not be described in detail here.

[0089] Please continue reading Figure 6 An electric telescopic support rod 23, a driven link 24 and a telescopic link 25 are provided between the vehicle body side mounting bracket 21 and the door side mounting bracket 22. The two ends of the driven link 24 are hinged to the vehicle body side mounting bracket 21 and the door side mounting bracket 22 through a pin shaft 26 respectively.

[0090] Specifically, in this embodiment, by adding an upper door hinge 1 and a lower door hinge 2, the upper door hinge 1 is provided with a connecting rod 11, and the two ends of the connecting rod 11 are respectively provided with a door riveting shaft 111 and a body riveting shaft 112, and the lower door hinge 2 is provided with a body side mounting bracket 21 and a door side mounting bracket 22, and an electric telescopic support rod 23, a driven connecting rod 24 and a telescopic connecting rod 25 are provided between the body side mounting bracket 21 and the door side mounting bracket 22. The ends of the retractable link 25 are hinged to the vehicle-side mounting bracket 21 and the door-side mounting bracket 22, respectively. The ends of the electrically retractable strut 23 are also hinged to the retractable link 25 and the vehicle-side mounting bracket 21, respectively. The electrically retractable strut 23 drives the retractable link 25 and the vehicle-side mounting bracket 21 to move, thereby driving the follower link 24 hinged to the vehicle-side mounting bracket 21 to move, thereby controlling the opening (including opening from a closed state to a slightly open state and from a slightly open state to a fully open state) and closing (closing) of the vehicle door. Unlike the prior art, this embodiment achieves the opening and closing of the vehicle door (including opening from a closed state to a slightly open state and from a slightly open state to a fully open state) without the need for guide rails. Therefore, the connection mechanism of the trackless sliding door in this embodiment lacks exposed guide rails, improving the vehicle's visual appearance and avoiding corrosion problems caused by exposed guide rails. The trackless sliding door connection mechanism of this embodiment controls the opening of the vehicle doors. The door's movement trajectory can be divided into two stages (specifically, the movement from a closed state to a slightly open state, and the movement from the slightly open state to a fully open state). There is no gap between the front and rear doors, effectively resolving the issue of visual transparency at the gap between the front and rear doors. Generally speaking, each movement stage requires a driver. However, the trackless sliding door connection mechanism of this embodiment requires only a single driver (i.e., the electrically operated telescopic strut 23) to control both stages (i.e., the movement from a closed state to a slightly open state, and the movement from the slightly open state to a fully open state), thus eliminating drivers and reducing costs.

[0091] Please continue reading Figure 7 The telescopic link 25 includes a front end 251 and a rear end 252. One end of the front end 251 is hingedly connected to the door-side mounting bracket 22, and the other end of the front end 251 is slidably connected to one end of the rear end 252. The other end of the rear end 252 is hingedly connected to the vehicle-side mounting bracket 21. A stop pin 2511 is provided at the end of the front end 251 connected to the rear end 252, which engages with the motion groove 211. When the door is slid, the movement trajectory of the stop pin 2511 matches the direction of the motion groove 211 provided on the side wall of the vehicle-side mounting bracket 21, and the stop pin 2511 is inserted into the motion groove 211. The stop pin is conventional and will not be described in detail here.

[0092] Specifically, by setting a limit pin 2511 that cooperates with the motion slide 211 at one end connecting the front end 251 and the rear end 252 of the telescopic link 25, when the car door is sliding, the moving trajectory of the limit pin 2511 matches the direction of the motion slide 211 set on the side wall of the vehicle body side mounting bracket 21. The limit pin 2511 is inserted into the motion slide 211, which can limit the freedom of the telescopic link 25 during the movement process, avoid the problem of poor balance stability of the telescopic link 25 due to excessive freedom during the movement process, and thus improve the stability of the trackless side sliding door during the opening and closing process.

[0093] Please continue to see 7 and Figure 8 The first and second ends of the electric telescopic strut 23 are each provided with a ball pin mounting hole 232 for mounting a ball pin 231. The ball pin 231 is mounted within the ball pin mounting hole 232. The first end of the electric telescopic strut 23 is hingedly connected to the rear end 252 of the telescopic link 25 via the ball pin 231. The second end of the electric telescopic strut 23 is hingedly connected to the vehicle-side mounting bracket 21 via the ball pin 231. The ball pin is conventional and will not be described in detail here.

[0094] In another embodiment, the present invention further provides a trackless sliding door for a vehicle, which includes a door body and the connecting mechanism as described above.

[0095] Specifically, the upper door hinge 1 is arranged at the top of the door body and is connected to the door body through the door riveting shaft 111, and the lower door hinge 2 is arranged at the bottom of the door body and is connected to the door body through the door side mounting bracket 22.

[0096] Specifically, unlike the prior art, the upper door hinge 1 and the lower door hinge 2 of the vehicle trackless side sliding door of this embodiment are respectively located at the top and bottom of the door body, and do not need to occupy the space of the passenger cabin. This solves the technical problem in the prior art that some components of the mechanical structure of the trackless side sliding door need to occupy a large space in the passenger cabin, resulting in poor ride comfort of the vehicle.

[0097] In another embodiment, the vehicle trackless sliding door further comprises an upper door latch and a lower door latch. The upper door latch is disposed at an upper portion of one side of the vehicle body, and the lower door latch is disposed at a lower portion of one side of the vehicle body. Specifically, the upper door latch is fixedly disposed at an upper portion of a side of the door body that is fixedly connected to the vehicle body, and the lower door latch is fixedly disposed at a lower portion of a side of the door body that is fixedly connected to the vehicle body.

[0098] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 9 、 Figure 10 and Figure 11The working process of the vehicle trackless sliding door according to the embodiment of the present invention is as follows:

[0099] like Figure 1 and Figure 9 As shown, when the door is in the closed state, the first end of the electric telescopic support rod 23 is located at the c1 position, and the second end of the electric telescopic support rod 23 is fixed to the vehicle body side mounting bracket 21, and the state is the D1 state;

[0100] The front end portion 251 of the telescopic link 25 is located at position a1, and the state is A1;

[0101] The first end of the vehicle body side mounting bracket 21 is located at position a1, and the second end of the vehicle body side mounting bracket 21 is located at position b1, which is in state B1 and is fixedly connected to the vehicle door, and the relative position in space is fixed; the first end of the driven link 24 is located at position b1, which is in state C1, as shown in FIG. Figure 2 As shown, the limit pin 2511 of the telescopic link 25 is located at the front end of the E1 track line. Figure 3 As shown, the lock pin provided at the vehicle door (the lock pin is fixedly provided on the vehicle door, and the lock pin is prior art and will not be described in detail here) is located at the front end of the F1 track line;

[0102] like Figure 1 and Figure 10 As shown, in the first movement stage of the door (i.e., the stroke corresponding to E1, i.e., the door gradually opens from the closed state to the slightly open state), the electric telescopic support rod 23 is energized and contracts its length, and the first end of the electric telescopic support rod 23 gradually moves from the position c1 to the position c2, and the state gradually changes from the D1 state to the D2 state, as shown in FIG. Figure 1 As shown, the motion slide 221 limits the motion trajectory of the limit pin 2511 of the telescopic link 25; through the pulling action of the electric telescopic support rod 23 and the limiting action of the motion slide 211 of the vehicle body side mounting bracket 21 on the motion trajectory of the limit pin 2511, the length of the telescopic link 25 is shortened to a state where the stroke is 0, the front end 251 of the telescopic link 25 gradually moves from the a1 position to the a2 position, and the state gradually changes from the A1 state to the A2 state, and the limit pin 2511 of the telescopic link 25 gradually moves from the front end position of the E1 trajectory line (i.e., the left side) along the trajectory line. Gradually changes to the rear end position of the E1 trajectory line (i.e., the middle position); one corner of the end of the vehicle body side mounting bracket 21 away from the vehicle body gradually moves from the a1 position to the a2 position, and the other corner of the end of the vehicle body side mounting bracket 21 away from the vehicle body gradually changes from the b1 position to the b2 position, and the state is gradually changed from the B1 state to the B2 state, and is fixedly connected to the door body 1, driving the door to open slightly; the end of the driven connecting rod 24 hinged to the door side mounting bracket 22 gradually moves from the b1 position to the b2 position, and the state gradually changes from the C1 state to the C2 state, as shown in FIG. Figure 10As shown, the lock pin provided at the vehicle door gradually changes from the front end position of the F1 trajectory line to the rear end position of the F1 trajectory line along the trajectory line, and A2, B2, C2 and the vehicle body side mounting bracket 21 together form a parallelogram.

[0103] like Figure 1 and Figure 11 As shown, the door moves in the second stage (i.e., the door moves from a slightly open state to a fully open state), the electric telescopic support rod 23 continues to shrink in length, the first end of the electric telescopic support rod 23 gradually changes from the c2 position to the c3 position, and the state gradually changes from the D2 state to the D3 state; the electric telescopic support rod 23 drives the front end portion 251 of the telescopic link 25 to gradually move from the a2 position to the a3 position, and the state gradually changes from the A2 state to the A3 state, and the limit pin 2511 of the telescopic link 25 moves from the rear end position of the E1 trajectory line along the trajectory The line gradually moves to the rear end position of the E2 trajectory line; the end of the door side mounting bracket 22 hinged to the driven link 24 gradually moves from the a2 position to the a3 position, and the end of the door side mounting bracket 22 away from the driven link 24 gradually moves from the b2 position to the b3 position, and the state is gradually changed from the B2 state to the B3 state, and is fixedly connected to the door body, driving the door body to open to the maximum position; the first end of the driven link 24 gradually moves from the b2 position to the b3 position, and the state gradually changes from the C2 state to the C3 state; Figure 10 As shown, the lock pin provided at the vehicle door gradually moves along the trajectory line from the rear end position of the F1 trajectory line to the rear end position of the F2 trajectory line.

[0104] The front and rear end axes of the door hinge 1 are collinear with the front and rear end axes of the driven link 24 , so the position change of the door hinge 1 is consistent with the driven link 24 , which can assist in stabilizing the door movement process.

[0105] When closing the door, the electric telescopic support rod 23 extends and the lower hinge 2 moves in the opposite direction to drive the door body to the closed state. The rear door lock is locked, pressing the door tightly. The front door lock pin is tightly combined with the upper door lock hook 6 and the lower door lock hook 7 to complete the door locking.

[0106] In another embodiment, the present invention further provides a vehicle comprising a vehicle body and the vehicle trackless side sliding door as described above, wherein the vehicle body riveted shaft 112 is connected to the vehicle body, and the vehicle body side mounting bracket 21 is fixedly connected to the vehicle body via a plurality of fixing bolts provided thereon.

[0107] See also Figure 12 In another embodiment, the vehicle further includes an upper door lock catch 4 , an upper door lock hook 5 , a lower door lock hook 7 and a lower door lock catch 6 .

[0108] Please continue reading Figure 12The upper door lock catch 4 is arranged at the upper part of one side of the door body 3, and the lower door lock catch 6 is arranged at the lower part of one side of the door body 3. Specifically, the upper door lock catch 4 is fixedly arranged at the upper part of the side of the door body 3 fixedly connected to the vehicle body, and the lower door lock catch 6 is fixedly arranged at the lower part of the side of the door body 3 fixedly connected to the vehicle body.

[0109] See also Figure 13 The upper door lock hook 5 is mounted on the upper portion of the vehicle body and cooperates with the upper door lock catch 4. The upper door lock hook 5 includes a first fixing portion 51 and a first lock tongue 52 connected to the first fixing portion 51. One end of the first fixing portion 51 is fixed to the upper portion of the vehicle body, and the end of the first fixing portion 51 away from the vehicle body is connected to the first lock tongue 52. Specifically, the first fixing portion 51 can be fixed to the upper portion of the vehicle body by welding, screwing, etc. The lock hook, lock catch, welding, screwing, etc. are all conventional techniques and will not be described in detail here.

[0110] Please continue reading Figure 13 The lower door lock hook 7 is disposed at the lower portion of the vehicle body and cooperates with the lower door lock catch 6. The lower door lock hook 7 includes a second fixing portion 71 and a second locking tongue 72 connected to the second fixing portion 71. One end of the second fixing portion 71 is fixedly disposed at the upper portion of the vehicle body, and the end of the second fixing portion 71 away from the vehicle body is connected to the second locking tongue 72. Specifically, the second fixing portion 71 can be fixed to the upper portion of the vehicle body by welding, screwing, or other methods.

[0111] Specifically, the vehicle of this embodiment is equipped with an upper door latch 4, an upper door hook 5, a lower door hook 7, and a lower door latch 6. The upper door hook 5 is configured to cooperate with the upper door latch 4, and the lower door hook 7 cooperates with the lower door latch 6. The vehicle door can be locked and unlocked through the cooperation of the lower door hook 7 and the lower door latch 6, as well as the cooperation of the upper door hook 5 and the upper door latch 4. This means that two door locks are optimized into hooks. While conventional trackless sliding doors typically require three door locks, a vehicle using the present invention only requires one door lock, reducing costs.

[0112] In another embodiment, the telescopic link 25 includes a front end portion 251 and a rear end portion 252, one end of the front end portion 251 is hinged to the door side mounting bracket 22, the other end of the front end portion 251 is slidingly connected to one end of the rear end portion 252, and the other end of the rear end portion 252 is hinged to the vehicle body side mounting bracket 21.

[0113] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A connection mechanism for a trackless sliding door, characterized in that: The connecting mechanism of the trackless sliding door includes: The upper hinge of the vehicle door is provided with a connecting rod, and the two ends of the connecting rod are respectively provided with a door riveting axis and a vehicle body riveting axis; and The lower hinge of the door is provided with a vehicle body side mounting bracket and a vehicle door side mounting bracket, an electric telescopic support rod, a driven link and a telescopic link are provided between the vehicle body side mounting bracket and the vehicle door side mounting bracket, the two ends of the driven link and the telescopic link are respectively hinged to the vehicle body side mounting bracket and the vehicle door side mounting bracket, and the two ends of the electric telescopic support rod are respectively hinged to the telescopic link and the vehicle body side mounting bracket; The telescopic link comprises a front end and a rear end, one end of the front end is hinged to the door-side mounting bracket, the other end is slidably connected to one end of the rear end, and the other end of the rear end is hinged to the vehicle body-side mounting bracket; A limit pin is provided at one end of the front end portion connected to the rear end portion, and a motion slide groove cooperating with the limit pin is provided on the side wall of the vehicle body side mounting bracket. The direction of the motion slide groove matches the moving trajectory of the limit pin when the vehicle door is slid, and the limit pin is inserted into the motion slide groove.

2. The connection mechanism of the trackless sliding door according to claim 1, characterized in that: The vehicle door upper hinge further comprises a connecting rod mounting bracket, and the vehicle body riveting shaft is connected to the connecting rod mounting bracket.

3. The connection mechanism of the trackless sliding door according to claim 1, characterized in that: The vehicle body side mounting bracket and the vehicle door side mounting bracket are both provided with a plurality of fixing bolts.

4. The connection mechanism of the trackless sliding door according to claim 1, characterized in that: The two ends of the driven connecting rod and the telescopic connecting rod are respectively hinged to the vehicle body side mounting bracket and the vehicle door side mounting bracket through pins.

5. The connection mechanism of the trackless sliding door according to claim 1, characterized in that: The two ends of the electric telescopic support rod are respectively hinged to the telescopic connecting rod and the vehicle body side mounting bracket through ball pins.

6. A trackless sliding door for a vehicle, characterized in that: The vehicle trackless sliding door comprises: door; and According to the connecting mechanism as described in claim 1, the upper door hinge is arranged at the top of the door body and is connected to the door body through a door riveting shaft, and the lower door hinge is arranged at the bottom of the door body and is connected to the door body through a door side mounting bracket.

7. The vehicle trackless sliding door according to claim 6, characterized in that: Also includes: The upper door lock catch and the lower door lock catch are respectively arranged on the upper part and the lower part of one side of the door body.

8. A vehicle, characterized in that: The vehicle comprises: vehicle body; and According to the vehicle trackless side sliding door as described in claim 6 or 7, the vehicle body riveted shaft and the vehicle body side mounting bracket are respectively connected to the vehicle body.

9. The vehicle according to claim 8, characterized in that The vehicle further comprises: The upper door lock and the lower door lock are respectively arranged at the upper part and the lower part of one side of the door body; and The upper door lock hook and the lower door lock hook are matched with the upper door lock catch and the lower door lock catch respectively, and are both arranged on the vehicle body.

10. The vehicle according to claim 8, characterized in that The telescopic link includes a front end and a rear end, one end of the front end is hinged to the door side mounting bracket, the other end is slidably connected to one end of the rear end, and the other end of the rear end is hinged to the vehicle body side mounting bracket.

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