Car door limiting stopper and car door assembly

Abstract

The invention provides a vehicle door limiter and a vehicle door assembly. The vehicle door limiter comprises a lead screw and a vehicle body connecting frame arranged at one end of the lead screw. The vehicle door connecting frame is movably arranged on the lead screw in a sleeving manner; the lead screw nut is arranged in the vehicle door connecting frame and is in spiral transmission fit with the lead screw, and a gear ring part is arranged on the outer surface of the lead screw nut; the stopping mechanism is provided with a stopping piece, and the stopping piece is movably arranged in the vehicle door connecting frame; under the condition that the vehicle door moves, the stop piece and the gear ring part release the stop fit, so that the stop mechanism releases the lead screw nut; and under the condition that the vehicle door stops moving, the stop piece is in stop fit with the gear ring part, so that the stop mechanism stops the rotation of the lead screw nut. Through stopping or releasing between the lead screw nut and the stopping mechanism, the vehicle door can move or hover at any position, the dependence of the vehicle door limiter on intelligent control is reduced, and then the cost requirement is lowered.

Description

Technical Field

[0001] The invention relates to the field of vehicle parts, and in particular to a door stopper and a door assembly. Background Art

[0002] In the related technology, the car's door limiter can make the door hover at a specific position, but it will reduce the user experience and comfort. The smart door limiter can make the door hover at any position through a more complex mechanical structure and software control system, but the cost is relatively high.

[0003] Therefore, how to achieve the door hovering at any position while reducing its dependence on intelligent control and thus reducing cost requirements has become the current development direction of the door limiter. Summary of the invention

[0004] The present invention is made to solve the above technical problems, and its purpose is to provide a door stopper and a door assembly, which can solve the problem in the related art that the door stopper can control the door to hover at any position.

[0005] In a first aspect, the present application provides a door limiter, comprising: a screw and a body connecting frame arranged at one end of the screw; a door connecting frame, which can be movably mounted on the screw; a screw nut arranged in the door connecting frame, the screw nut cooperates with the screw helical transmission, and a gear ring portion is arranged on the outer surface of the screw nut; a stop mechanism provided with a stop member, and the stop member can be movably arranged in the door connecting frame; when the door moves, the stop member and the gear ring portion release the stop cooperation, so that the stop mechanism releases the screw nut; when the door stops moving, the stop member and the gear ring portion stop cooperation, so that the stop mechanism prevents the screw nut from rotating.

[0006] Optionally, when the vehicle door is in a non-hovering area, the stopper releases the ring gear part; when the vehicle door located in the hovering area stops moving, the stopper stops the ring gear part; when the vehicle door located in the hovering area moves, the stopper releases the ring gear part; the area where the opening angle of the vehicle door is less than the preset hovering angle is the non-hovering area, and the area where the opening angle of the vehicle door is greater than or equal to the preset hovering angle is the hovering area.

[0007] Optionally, the stopper is a movable stopper; when the vehicle door moves, the stopper is separated from the ring gear; when the vehicle door stops moving, the stopper engages with the ring gear.

[0008] Optionally, a stop flange is arranged on the outer periphery of the screw nut, the gear ring portion and the stop flange are arranged in sequence along the axial direction of the screw nut, and a flange sliding surface is arranged on one side of the stop flange inclined toward the gear ring portion.

[0009] When the door moves, the screw nut leaves the meshing position in the door connecting frame, and the stopper slides along the flange sliding surface to move away from the gear ring portion; when the door stops moving, the screw nut returns to the meshing position in the door connecting frame, and the stopper meshes with the gear ring portion.

[0010] Optionally, it also includes a reset elastic member, which is respectively connected to the screw nut and the door connecting frame; when the door stops moving, the reset elastic member drives the screw nut to move to the meshing position in the door connecting frame; when the door moves, the screw nut leaves the meshing position and adjusts the deformation degree of the reset elastic member.

[0011] Optionally, the stop mechanism is a first stop mechanism, the stop member is a first stop member, and the first stop mechanism also includes a first elastic member; a first cavity is set in the door connecting frame, the first stop member and the first elastic member are both set in the first cavity, and are arranged in sequence along the direction away from the screw nut.

[0012] Optionally, the first stop member is provided with a thrust groove, the thrust groove has a first sliding surface arranged obliquely, and the first stop mechanism also includes a push block, the push block includes a base and an extension portion; wherein the base can movably sleeve a screw rod and is located between the vehicle body connecting frame and the vehicle door connecting frame; the extension portion is connected to the base, and the extension portion passes through the vehicle door connecting frame and faces the first sliding surface; the first stop member can move with the vehicle door connecting frame toward a side close to the vehicle body connecting frame so that the first sliding surface slides and contacts the extension portion; when the vehicle door is in a closed state, or when the opening angle of the vehicle door is less than a preset hovering angle, the push block drives the first stop member to separate from the ring gear portion through the extension portion and the first sliding surface; when the vehicle door is in a hovering area, the vehicle door connecting frame and the base are far away from each other, and the extension portion is located outside the movement path of the first sliding surface; the opening angle of the vehicle door in the hovering area is greater than or equal to the preset hovering angle.

[0013] Optionally, a second elastic member is provided between the base of the push block and the door connecting frame; when the door is in a closed state, or the opening angle of the door is less than a preset hovering angle, the second elastic member is compressed between the door connecting frame and the base.

[0014] Optionally, the stop mechanism is a second stop mechanism, the stop member is a second stop member, and the second stop mechanism further includes a drive motor;

[0015] A second cavity is arranged in the door connecting frame, a second stopper is arranged in the second cavity, a driving motor is installed on the door connecting frame and connected to the second stopper; the driving motor can drive the second stopper to rotate so that the second stopper is separated from or engaged with the gear ring part.

[0016] Optionally, a stop controller and a contact switch are further provided in the door connecting frame, and the contact switch is provided in the second cavity; the lead screw nut can touch the contact switch as the door moves, so that the contact switch transmits a trigger signal to the stop controller, and the stop controller can respond to the trigger signal to control the drive motor to drive the second stop member to rotate until it is separated from the ring gear part; and, the lead screw nut can be separated from the contact switch as the door stops, and the stop controller can control the drive motor to drive the second stop member to rotate to engage the ring gear part when the trigger signal is disconnected.

[0017] Optionally, when the vehicle door is closed, the stop controller can control the drive motor to drive the second stop member to rotate to the disengagement ring gear portion.

[0018] Optionally, when the door is switched from a closed state to hovering at a preset hovering angle, the stop controller can control the drive motor to drive the second stop member to rotate to engage with the ring gear portion.

[0019] Optionally, the stop mechanism is a third stop mechanism, the stop member is a third stop member, and the third stop member is a gear that meshes with the ring gear part; the third stop mechanism also includes a brake and a damping controller that are connected to each other, and the stop member key is connected to the brake; when the vehicle door moves, the damping controller controls the brake to stop applying resistance, or controls the brake to apply a first preset resistance that causes the lead screw nut to rotate with the vehicle door damping; when the vehicle door stops moving, the damping controller controls the brake to apply a second preset resistance that causes the lead screw nut to stop rotating; the second preset resistance is greater than the first preset resistance.

[0020] Optionally, when the vehicle door is closed, the damping controller can control the brake to stop applying resistance.

[0021] Optionally, when the door is switched from a closed state to hovering at a preset hovering angle, the damping controller can control the brake to apply a second preset resistance.

[0022] Optionally, when the vehicle door is in a closed state, the stopper releases the ring gear portion; when the vehicle door in a closed state is opened to enter a hovering area, the vehicle door can cause the stopper to stop the ring gear portion when stopping movement, and cause the stopper to release the ring gear portion when moving; the area where the opening angle of the vehicle door is ≥ a preset hovering angle is the hovering area, and the opening angle is 0° when the vehicle door is in a closed state.

[0023] In a second aspect, the present application provides a vehicle door assembly, including a vehicle door limiter.

[0024] The beneficial effects of the present invention are as follows:

[0025] The present invention discloses a vehicle door limiter, comprising: a screw rod and a vehicle body connecting frame arranged at one end of the screw rod; the vehicle door connecting frame, which can be movably sleeved on the screw rod; a screw rod nut arranged in the vehicle door connecting frame, the screw rod nut and the screw rod spiral transmission cooperate, and a gear ring portion is arranged on the outer surface of the screw rod nut; a stop mechanism provided with a stopper, and the stopper can be movably arranged in the vehicle door connecting frame; when the vehicle door moves, the stopper and the gear ring portion release the stopper cooperation, so that the stopper mechanism releases the screw rod nut, the screw rod nut rotates, and moves linearly with the vehicle door connecting frame away from or close to the vehicle body connecting frame; when the vehicle door stops moving, the stopper and the gear ring portion stopper cooperate, so that the stopper mechanism blocks the rotation of the screw rod nut.

[0026] In summary, the movement of the door can be achieved through the release between the screw nut and the stopper, and the door can be suspended at any position through the stop between the screw nut and the stop mechanism, and the dependence of the door limiter on intelligent control can be reduced, thereby reducing cost requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above features and advantages of the present invention can be better understood after reading the detailed description of the embodiments of the present disclosure in conjunction with the following drawings. In the drawings, the components are not necessarily drawn to scale, and components with similar related properties or features may have the same or similar reference numerals.

[0028] Figure 1 is an application scenario diagram of the present invention;

[0029] Figure 2 is a structural diagram of a door stopper according to a first embodiment of the present invention;

[0030] Figure 3 The present invention Figure 2 A magnified view of point I;

[0031] Figure 4 The present invention Figure 2 Internal first state diagram;

[0032] Figure 5 The present invention Figure 2 Internal second state diagram;

[0033] Figure 6 The present invention Figure 2 Internal third state diagram;

[0034] Figure 7 It is a structural diagram of the screw nut of the present invention;

[0035] Figure 8 is a structural diagram of a door stopper according to a second embodiment of the present invention;

[0036] Fig. 9 is a perspective view of a door stopper according to a second embodiment of the present invention;

[0037] Fig.10 is a schematic diagram of tooth meshing of a second embodiment of the present invention;

[0038] Fig.11 is a schematic diagram of tooth separation of a second embodiment of the present invention;

[0039] Fig.12 is a logic control diagram of the present invention;

[0040] Fig.13 is a structural diagram of a door stopper according to a third embodiment of the present invention;

[0041] Fig.14 Schematic diagram of tooth meshing of the third embodiment of the present invention.

[0042] Description of reference numerals:

[0043] 1000-car door,

[0044] 2000-Car body,

[0045] 100-screw,

[0046] 200-body connecting frame,

[0047] 300- Door connecting frame,

[0048] 310-first cavity, 320-second cavity, 330-middle cavity,

[0049] 400-screw nut,

[0050] 410-gear ring, 420-stop flange, 421-flange sliding surface,

[0051] 502-block sliding surface,

[0052] 510- first stop mechanism,

[0053] 511-first stopper, 5111-first sliding surface, 512-first elastic member, 513-push block, 5131-base, 5132-extension portion, 5133-push block sliding surface, 514-second elastic member,

[0054] 520- second stop mechanism,

[0055] 521-second stopper, 522-driving motor, 523-contact switch,

[0056] 530- third stop mechanism,

[0057] 531-third stopper, 532-brake, 533-damping controller,

[0058] 610-first bellows, 620-second bellows,

[0059] 710-Reset elastic member. DETAILED DESCRIPTION

[0060] The present invention is further described below in conjunction with specific embodiments and drawings. More details are elaborated in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description herein. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the protection scope of the present invention should not be limited by the content of this specific embodiment.

[0061] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention.

[0062] In the related art, the door stopper of a car can make the door hover at a specific position. Here, hovering means that the opened door will be locked at the current opening angle when no external force is applied. However, there is no effective cost-reducing method for achieving the hovering of the door at any position. Therefore, the technical solution of this application is generated. Figure 1 to Figure 14 To elaborate:

[0063] Example 1

[0064] Figure 1 For the use scenario of the door limiter, Figure 2 to Figure 6 The vehicle door stopper in this embodiment is installed in the vehicle door 1000 and includes a screw rod 100, a vehicle body connecting frame 200, a vehicle door connecting frame 300, a screw rod nut 400 and a stop mechanism.

[0065] The vehicle body connecting frame 200 is disposed at one end of the screw rod 100 to connect the vehicle body 2000. A rotating shaft is inserted between the vehicle body connecting frame 200 and the screw rod 100 to realize the mutual rotation of the screw rod 100 and the vehicle body connecting frame 200. The vehicle door connecting frame 300 can be movably sleeved on the screw rod 100 and connected to the vehicle door 1000.

[0066] The screw nut 400 is arranged in the door connecting frame 300. Specifically, the door connecting frame 300 is provided with an intermediate cavity 330, the screw nut 400 is located in the intermediate cavity 330, the screw nut 400 and the screw 100 are screw-driven together, so that the screw nut 400 moves in the area defined by the intermediate cavity 330, and the outer surface of the screw nut 400 is provided with Figure 7The ring gear portion 410 is shown.

[0067] The stop mechanism is provided with a stopper, and the stopper is movably arranged in the door connecting frame 300. In this embodiment, the stop mechanism is a first stop mechanism 510, the stopper is a first stopper 511, the first stopper 511 is a movable stopper, the door connecting frame 300 is provided with a first cavity 310, and the first stopper 511 is arranged in the first cavity 310.

[0068] The following is a brief introduction of the movement principle of the limiter in this embodiment in conjunction with the opening process of the door 1000. Figure 1 , Figure 5 and Figure 6 As shown, the first stop mechanism 510 is used to control the linear motion of the first stop member 511 in the first cavity 310 , for example, the first stop mechanism 510 is a cylinder mechanism, a gear rack mechanism, etc.

[0069] like Figure 1 and Figure 6 As shown, when the vehicle door 1000 is opening, it will be driven by external force to increase the opening angle of the vehicle door 1000, and the vehicle door connecting frame 300 will move to the side away from the vehicle body connecting frame 200, and the first stop member 511 and the ring gear portion 410 will release the stop cooperation, so that the first stop member 511 will be separated from the ring gear portion 410, so that the first stop mechanism 510 releases the screw nut 400, and the screw nut 400 can rotate and can move linearly with the vehicle door connecting frame 300 away from or close to the vehicle body connecting frame 200.

[0070] like Figure 5 As shown, when the vehicle door 1000 opens to a certain opening angle and stops moving, the first stop member 511 and the ring gear portion 410 stop and cooperate, and the first stop member 511 engages with the ring gear portion 410. At this time, the first stop mechanism 510 stops the rotation of the screw nut 400 and stops the linear movement of the vehicle door connecting frame 300. At this time, a locking state is formed between the screw nut 400, the first stop member 511 and the vehicle door connecting frame 300. When no external force is applied, the locking state will be maintained, so that the vehicle door 1000 is suspended at the opening angle.

[0071] And as Figure 6 As shown, when the vehicle door 1000 is moved again by external force, the locking balance inside the limiter is broken, the first stopper 511 will be separated from the ring gear part 410 again, the screw nut 400 starts to rotate, and both the screw nut 400 and the first stopper 511 can move with the vehicle door connecting frame 300.

[0072] In summary, by separating the teeth between the lead screw nut 400 and the first stopper 511, the lead screw nut 400 is released, so that the movement of the vehicle door 1000 can be achieved, and by engaging the teeth between the lead screw nut 400 and the first stopper 511, the lead screw nut 400 is stopped, so that the vehicle door 1000 can be suspended at any position, and the dependence of the vehicle door limiter on intelligent control is reduced, thereby reducing cost requirements.

[0073] Alternatively, if Figure 2 As shown, in order to improve the sealing effect, the door stopper further includes a first bellows 610 and a second bellows 620 both sleeved with the screw rod 100. The first bellows 610 is located between the vehicle body connecting frame 200 and the vehicle door connecting frame 300, and the second bellows 620 is located on the side of the vehicle door connecting frame 300 away from the vehicle body connecting frame 200. With the opening and closing action of the vehicle door 1000, the vehicle door connecting frame 300 will perform a linear motion away from or close to the vehicle body connecting frame 200, and the first bellows 610 and the second bellows 620 can both expand and contract with the linear motion of the vehicle door connecting frame 300, thereby always maintaining effective sealing.

[0074] Optionally, in order to manually control the limiter of this embodiment to further reduce the reliance on intelligent control and thus reduce costs, the limiter adopts the following design:

[0075] like Figure 7 As shown, a stop flange 420 is provided on the outer periphery of the screw nut 400, the gear ring portion 410 and the stop flange 420 are sequentially provided along the axial direction of the screw nut 400, and the stop flange 420 is provided with a flange sliding surface 421 inclined toward one side of the gear ring portion 410. More specifically, stop flanges 420 are provided on both sides of the screw nut 400, and an annular groove is formed between the two stop flanges 420, and the bottom of the annular groove is the gear ring portion 410.

[0076] like Figure 5 and Figure 6 As shown, the first stop mechanism 510 further includes a first elastic member 512 , which is disposed in the first cavity 310 , and the first stop member 511 and the first elastic member 512 are sequentially disposed in a direction away from the screw nut 400 .

[0077] The following is a brief description of the internal action of the limiter using the door opening movement as an example:

[0078] like Figure 5 As shown, when the door 1000 is suspended, the screw nut 400 is located at the meshing position in the door connecting frame 300. The meshing position can be understood as the centering position of the screw nut 400 in the door connecting frame 300, or as the position where the first stopper 511 faces the gear ring 410. Figure 2 and Figure 6As shown, when the vehicle door 1000 moves, the vehicle door connecting frame 300 will be driven away from the vehicle body connecting frame 200. At this time, the screw nut 400 leaves the meshing position in the vehicle door connecting frame 300, and the first stopper 511 slides along the flange sliding surface 421 away from the vehicle body connecting frame 200. That is, the first stopper 511 slides along the flange sliding surface 421 on the side away from the vehicle body connecting frame 200. Figure 6 The flange sliding surface 421 on the middle right side slides to move the first stopper 511 away from and partially offset from the gear ring portion 410 until the first stopper 511 separates from the gear ring portion 410 and the first elastic member 512 is compressed.

[0079] like Figure 5 As shown, when the vehicle door 1000 stops moving, the screw nut 400 returns to the meshing position in the vehicle door connecting frame 300, the first elastic member 512 restores its deformation and drives the first stop member 511 to slide along the flange sliding surface 421 to the meshing gear ring portion 410, the screw nut 400 stops rotating, the screw nut 400, the first stop member 511, and the vehicle door connecting frame 300 are locked with each other, and the vehicle door 1000 hovers at the current opening angle.

[0080] like Figure 6 As shown, when the door 1000 is operated to move again, the locked balance state inside the limiter is broken, the first stopper 511 slides along the flange sliding surface 421 to separate the ring gear part 410, the screw nut 400 rotates again, and can move with the door connecting frame 300, so that the door 1000 can adjust the opening angle.

[0081] The door closing movement is opposite to the door opening movement. When the door 1000 closes, it will drive the door connecting frame 300 to approach the body connecting frame 200, and the first stopper 511 will slide along the flange sliding surface 421 close to the side of the body connecting frame 200. Figure 5 The flange sliding surface 421 on the left side slides, which will not be described in detail here.

[0082] In summary, the setting of the stop flange 420 in this embodiment will, on the first aspect, further reduce the dependence on intelligence and improve the degree of manual operation to reduce costs. On the second aspect, the stop flanges 420 on both sides can limit the lead screw nut 400. When the vehicle door 1000 stops moving, the lead screw nut 400 can quickly return to the meshing position, thereby improving the centering performance of the lead screw nut 400, and further facilitating the meshing of the lead screw nut 400 and the first stop member 511.

[0083] Alternatively, if Figure 2 and Figure 3As shown, the first stop member 511 is inclined to set a block sliding surface 502 on one side of the stop flange 420, and the first stop member 511 slides in contact with the flange sliding surface 421 through the block sliding surface 502. The surface contact method can improve the sliding effect of the first stop member 511 on the flange sliding surface 421.

[0084] Alternatively, if Figure 2 and Figure 4 As shown, the door stopper further includes a reset elastic member 710, which is located in the middle cavity 330 and is respectively connected to the screw nut 400 and the door connecting frame 300. Specifically, the reset elastic member 710 is a spring sleeved on the screw 100, and a reset elastic member 710 is provided on each side of the screw nut 400 along the axial direction of the screw 100.

[0085] As described above, when the vehicle door 1000 moves, the screw nut 400 leaves the meshing position in the vehicle door connecting frame 300 and adjusts the deformation degree of the reset elastic member 710, such as Figure 6 As shown, the resetting elastic member 710 on one side is compressed, and the resetting elastic member 710 on the other side is stretched. When the door 1000 stops moving, the resetting elastic member 710 recovers its deformation, thereby driving the driving screw nut 400 to move to the engagement position in the door connecting frame 300, so that the first stopper 511 engages with the screw nut 400. Figure 5 It can be seen that the setting of the resetting elastic member 710 can improve the resetting effect of the screw nut 400 .

[0086] Alternatively, if Figure 1 and Figure 4 As shown, the first stopper 511 is provided with a thrust groove, and the thrust groove has a first sliding surface 5111 arranged obliquely. The first stopper mechanism 510 also includes a push block 513, and the push block 513 includes a base 5131 and an extension 5132. The base 5131 can movably sleeve the screw rod 100 and is located between the vehicle body connecting frame 200 and the vehicle door connecting frame 300; the extension 5132 is connected to the base 5131, and the extension 5132 passes through the vehicle door connecting frame 300 and faces the first sliding surface 5111. The first stopper 511 can move with the vehicle door connecting frame 300 toward the side close to the vehicle body connecting frame 200, so that the first sliding surface 5111 slides and contacts the extension 5132.

[0087] The arrangement of the push block 513 can make the door 1000 be divided into two parts according to the size of its opening angle. Figure 1The hovering area and non-hovering area shown. Among them, 0°≤door 1000 opening angle<preset hovering angle α is the range of the non-hovering area, wherein when the door 1000 opening angle=0°, the door 1000 is in a closed state, and the preset hovering angle α can be 3°~5°; the preset hovering angle α≤door 1000 opening angle ≤door 1000 maximum opening angle α+β is the hovering area of ​​the door 1000, wherein:

[0088] like Figure 1 and Figure 4 As shown, when the vehicle door 1000 is located in the non-hovering area, that is, when the vehicle door 1000 is in the closed state, or when the opening angle of the vehicle door 1000 is less than the preset hovering angle α, the push block 513 drives the first stopper 511 to separate from the gear ring portion 410 through the extension portion 5132 and the first sliding surface 5111, and drives the first stopper 511 to separate from the flange sliding surface 421. In other words, when the vehicle door 1000 is located in the non-hovering area, the first stopper 511 releases the gear ring portion 410, and the vehicle door 1000 will not hover whether it stops or moves.

[0089] like Figure 1 , Figure 5 and Figure 6 As shown, when the vehicle door 1000 is in the hovering area, that is, when the opening angle of the vehicle door 1000 is in the range of the preset hovering angle α to the maximum opening angle α+β, the vehicle door connecting frame 300 and the base 5131 are separated from each other, and the extension portion 5132 is located outside the movement path of the first sliding surface 5111; that is, when the vehicle door 1000 stops moving in the hovering area, the first stopper 511 engages with the gear ring portion 410 of the screw nut 400, and the first stopper 511 stops the gear ring portion 410, thereby causing the vehicle door 1000 to hover. When the vehicle door 1000 in the hovering area moves, the first stopper 511 releases the gear ring portion 410.

[0090] The actual operation process is as follows:

[0091] like Figure 1 , Figure 2 and Figure 4 As shown, when the door 1000 is in a closed state, the opening angle of the door 1000 is 0°, the door 1000 is located in a non-hovering area, the door connecting frame 300 is close to the body connecting frame 200, the extension portion 5132 of the push block 513 extends into the thrust groove and slides in contact with the push block sliding surface 5133, so as to drive the first stopper 511 to separate from the gear ring portion 410 of the screw nut 400, and the first elastic member 512 is compressed. At the same time, the sealing members between the door 1000 and the body 2000 are pressed against each other to achieve sealing.

[0092] like Figure 1 , Figure 2 and Figure 5 As shown, when the door 1000 is unlocked, the shape of the seal is restored, and the door 1000 is automatically opened by the reaction force from the seal. During this process, the opening angle of the door 1000 gradually increases from 0°, and the door connecting frame 300 gradually moves away from the body connecting frame 200. Figure 4 As shown, under the interference of the push block 513, the first stop member 511 releases the ring gear portion 410, and the screw nut 400 rotates freely; until the opening angle of the vehicle door 1000 increases to the preset hovering angle α, it enters the hovering area, and the extension portion 5132 withdraws to the outside of the movement path of the first sliding surface 5111, and the push block 513 no longer interferes with the movement of the first stop member 511, and the first elastic member 512 drives the first stop member 511 to approach the ring gear portion 410 until the first stop member 511 engages with the ring gear portion 410, thereby realizing the hovering of the vehicle door 1000 at the preset hovering angle α.

[0093] like Figure 1 , Figure 2 and Figure 6 As shown, if the vehicle door 1000 is to be opened further after entering the hovering area, the vehicle door connecting frame 300 drives the first stopper 511 to continue to move away from the vehicle body connecting frame 200, that is, the vehicle door connecting frame 300 moves toward Figure 6 The first stopper 511 slides along the flange sliding surface 421 to separate from the ring gear portion 410, and the screw nut 400 can rotate and move with the door connecting frame 300, and the door 1000 continues to open.

[0094] like Figure 1 , Figure 2 and Figure 5 As shown, after entering the hovering area, if the door 1000 stops moving when it opens to a certain angle, the first elastic member 512 drives the first stop member 511 to approach the screw nut 400 until the first stop member 511 re-engages with the gear ring portion 410 to stop the screw nut 400 from rotating, thereby achieving locking between the screw nut 400, the first stop member 511 and the door connecting frame 300, and the door 1000 hovers to the current opening angle.

[0095] It can be seen that when the vehicle door 1000 is located in the non-hovering area at the initial stage of unlocking, the push block 513 will prevent the first stop member 511 from meshing with the ring gear portion 410, so that the vehicle door 1000 will not be subject to resistance from the mutual friction between the first stop member 511 and the flange sliding surface 421 in the movement range of 0° to the preset hovering angle α, and the vehicle door 1000 can be opened more smoothly to the preset hovering angle α, thereby reducing the difficulty of the user in controlling the vehicle door 1000.

[0096] Alternatively, if Figure 2 , Figure 4 and Figure 5As shown, a second elastic member 514 is provided between the base 5131 of the push block 513 and the door connecting frame 300. The second elastic member 514 can better keep the door connecting frame 300 and the base 5131 away from each other during the opening process of the door 1000, so as to prevent the push block 513 from interfering with the movement of the first stopper 511 after the door 1000 enters the hovering area, as follows:

[0097] like Figure 4 As shown, when the vehicle door 1000 is in a closed state, or the opening angle of the vehicle door 1000 is less than the preset hovering angle α, that is, when the vehicle door 1000 is in a non-hovering area, the vehicle door connecting frame 300 and the base 5131 approach each other, and the second elastic member 514 is compressed between the vehicle door connecting frame 300 and the base 5131.

[0098] like Figure 5 As shown, during the opening process of the vehicle door 1000, the second elastic member 514 gradually recovers its deformation so that the door connecting frame 300 and the base 5131 move away from each other until the vehicle door 1000 opens to a preset hovering angle α and the extension portion 5132 is located outside the movement path of the first sliding surface 5111.

[0099] Alternatively, if Figure 5 As shown, the extension portion 5132 is provided with a push block sliding surface 5133 , so that the extension portion 5132 can make surface contact with the first sliding surface 5111 , so that the push block 513 can better drive the first stopper 511 to move.

[0100] The operation of the limiter of this embodiment is described in detail below by taking the opening process of the door 1000 as an example:

[0101] like Figure 1 , Figure 2 and Figure 4 As shown, when the vehicle door 1000 is closed, the vehicle door 1000 is located in the non-hovering area, the door connecting frame 300 approaches the side of the vehicle body connecting frame 200, and the push block 513 contacts the first sliding surface 5111 by sliding to drive the first stop member 511 to separate from the ring gear portion 410 and the flange sliding surface 421. At this time, the screw nut 400 can rotate, and the first elastic member 512 and the second elastic member 514 are both compressed.

[0102] like Figure 1 , Figure 2 and Figure 4 As shown, after the door 1000 is unlocked, the seal between the door 1000 and the vehicle body 2000 recovers its deformation, and the reaction force generated by the seal will bounce the door 1000 open, and the door 1000 will open, and the screw nut 400 will move away from the vehicle body connecting frame 200 along with the door connecting frame 300, that is, Figure 4 Move to the middle right.

[0103] like Figure 1 , Figure 2 and Figure 5 As shown, when the vehicle door 1000 is opened to a preset hovering angle α, the vehicle door 1000 enters the hovering area, the vehicle door connecting frame 300 moves away from the vehicle body connecting frame 200, and the second elastic member 514 gradually recovers its deformation to drive the base 5131 to move away from the vehicle door connecting frame 300, and drives the extension portion 5132 to be located outside the movement path of the first sliding surface 5111. At this time, the push block 513 no longer interferes with the movement of the first stop member 511, and the first elastic member 512 recovers its elastic deformation to drive the first stop member 511 to engage the ring gear portion 410. At this time, the screw nut 400, the first stop member 511, and the vehicle door connecting frame 300 are locked with each other, and the vehicle door 1000 can hover when it stops moving in the hovering area.

[0104] like Figure 1 , Figure 2 and Figure 6 As shown, when the door 1000 in the hovering area continues to open, the opening angle gradually increases, the locking balance state of the screw nut 400, the first stopper 511, and the door connecting frame 300 is broken by the external force, and the door connecting frame 300 continues to move away from the vehicle body connecting frame 200. The first stopper 511 will move with the door connecting frame 300, and the screw nut 400 leaves the meshing position in the door connecting frame 300. The reset elastic member 710 on one side of the screw nut 400 is compressed, and the reset elastic member 710 on the other side of the screw nut 400 is extended, and the first stopper 511 then slides in contact with the flange sliding surface 421 on the side of the screw nut 400 away from the base 5131, that is, the first stopper 511 moves along Figure 6 The flange sliding surface 421 on the middle right side slides until it separates and releases the ring gear part 410. After the first stopper 511 separates and releases the ring gear part 410, the first elastic member 512 is compressed, the screw nut 400 can rotate, and can move with the door connecting frame 300, so that the door 1000 can move.

[0105] like Figure 1 , Figure 2 and Figure 5 As shown, when the vehicle door 1000 located in the hovering area stops moving at a certain opening angle, the first elastic member 512 restores its deformation and drives the first stop member 511 to move toward the side close to the screw nut 400 and slide along the flange sliding surface 421, and the reset elastic member 710 gradually restores its deformation until the screw nut 400 returns to the meshing position, and the first stop member 511 meshes with the ring gear part 410 to form a stop for the ring gear part 410. At this time, the screw nut 400, the first stop member 511, and the vehicle door connecting frame 300 are locked with each other, and the vehicle door 1000 can hover.

[0106] The closing process of the door 1000 is briefly described as follows:

[0107] When the door 1000 in the hovering area needs to be closed, the opening angle gradually decreases, and the first stopper 511 then slides in contact with the flange sliding surface 421 of the screw nut 400 close to the base 5131, that is, the first stopper 511 slides along the Figure 5 The flange sliding surface 421 on the middle left side slides until the gear ring portion 410 is separated and released, and the screw nut 400 can rotate and move with the door connecting frame 300, so that the door 1000 can move.

[0108] like Figure 1 , Figure 2 and Figure 4 As shown, when the vehicle door 1000 enters the non-hovering area, the door connecting frame 300 approaches the side of the vehicle body connecting frame 200, and the push block 513 contacts the first sliding surface 5111 by sliding to drive the first stop member 511 to separate from the ring gear part 410 and the flange sliding surface 421. At this time, the first stop member 511 releases the ring gear part 410, and the screw nut 400 can rotate until the vehicle door 1000 is closed.

[0109] Example 2

[0110] Figure 8 to Figure 12 The door stopper in this embodiment is different from that in Embodiment 1 as follows:

[0111] like Figure 8 and Fig. 9 As shown, in this embodiment, the stop mechanism is a second stop mechanism 520, the stop member is a second stop member 521, the second stop member 521 is a movable stopper, and the second stop mechanism 520 further includes a drive motor 522. The second cavity 320 is provided in the door connecting frame 300, and the intermediate cavity 330 is located between the first cavity 310 and the second cavity 320, and is connected to the first cavity 310 and the second cavity 320 respectively. The second stop member 521 is provided in the second cavity 320, and the drive motor 522 is installed on the door connecting frame 300 and connected to the second stop member 521.

[0112] like Fig. 9 and Fig.10 As shown, the driving motor 522 can drive the second stop member 521 to rotate so that the second stop member 521 separates from the ring gear part 410. At this time, the second stop member 521 and the ring gear part 410 release the stopping cooperation, so that the second stop mechanism 520 releases the screw nut 400, and the screw nut 400 can rotate and move with the door connecting frame 300, so that the door 1000 can move to open and close.

[0113] like Fig. 9 and Fig.11As shown, the driving motor 522 can also drive the second stop member 521 to rotate so that the second stop member 521 engages with the ring gear part 410. At this time, the second stop member 521 and the ring gear part 410 stop and cooperate with each other, so that the second stop mechanism 520 blocks the rotation of the screw nut 400, and the second stop member 521, the screw nut 400 and the door connecting frame 300 are locked, and the door 1000 hovers at the current opening angle and stops moving.

[0114] It can be seen that, in the first aspect, the limiters of Example 1 and Example 2 can be replaced with each other. Specifically, the door connecting frame 300 can install the first stop mechanism 510 through the first cavity 310, and can also install the second stop mechanism 520 through the second cavity 320, thereby improving the universal performance of the door limiter.

[0115] In the second aspect, the limiter of this embodiment can be used regardless of the power supply state or the power-off state. Specifically, when the driving motor 522 is powered, when the door 1000 moves, the driving motor 522 drives the second stopper 521 to rotate to leave the ring gear portion 410, and when the door 1000 is suspended, the driving motor 522 drives the second stopper 521 to rotate to engage the ring gear portion 410. In the event of a power failure, the second stopper 521 will slide along the flange sliding surface 421 of the stopper flange 420 in the process of moving with the door connecting frame 300, and rotate around the motor shaft of the driving motor 522 until the second stopper 521 rotates to separate from the ring gear portion 410, at which time the screw nut 400 can rotate and move with the door connecting frame 300, and the door 1000 continues to move, so as to prevent the door 1000 from getting stuck after an abnormal power failure.

[0116] Alternatively, if Fig. 9 and Fig.12 As shown, the door connecting frame 300 is also provided with a stop controller and a contact switch 523 . The contact switch 523 is arranged in the second cavity 320 , and the contact switches 523 are arranged in pairs along the axial direction of the screw rod 100 , and the screw nut 400 is located between the two contact switches 523 .

[0117] When the vehicle door 1000 is moving, the second stop member 521 moves with the vehicle door connecting frame 300, and the second stop member 521 slides and contacts the flange sliding surface 421 to be offset from at least a portion of the ring gear portion 410. At this time, the lead screw nut 400 leaves the meshing position in the vehicle door connecting frame 300, and the lead screw nut 400 can move with the movement of the vehicle door 1000 to touch the contact switch 523, and then the contact switch 523 transmits a trigger signal to the stop controller, and the stop controller can respond to the trigger signal to control the drive motor 522 to drive the second stop member 521 to rotate until it is separated from the ring gear portion 410.

[0118] When the movement of the door 1000 stops, the resetting elastic member 710 drives the screw nut 400 to return to the meshing position in the door connecting frame 300. At this time, the screw nut 400 can be separated from the contact switch 523 as the door 1000 stops. When the trigger signal is disconnected, the stop controller can control the driving motor 522 to drive the second stop member 521 to rotate to mesh with the ring gear portion 410. In this way, the response sensitivity of the limiter of this embodiment can be improved.

[0119] Alternatively, if Figure 1 , Fig. 9 and Fig.12 As shown, when the door 1000 is closed, the door 1000 is located in the non-hovering area, and the stop controller can control the driving motor 522 to drive the second stopper 521 to rotate to separate the ring gear part 410, thereby releasing the ring gear part 410. This process can be controlled by connecting other sensors to the stop controller, such as adding an angle sensor or an infrared sensor to detect whether the door 1000 is closed, and sending a closing signal to the stop controller when closing, thereby controlling the second stopper 521 to separate the ring gear part 410. This is to reduce the control difficulty of the limiter. Specifically, when the door 1000 is unlocked again, the seal between the door 1000 and the vehicle body 2000 recovers its deformation, and the reaction force generated by the recovery of the seal will drive the door 1000 to open, so as to prevent the second stopper 521 from engaging the ring gear part 410 during the process, causing the door 1000 to get stuck or the opening resistance to be too large.

[0120] Alternatively, if Figure 1 and Fig.12 As shown, when the vehicle door 1000 switches from a closed state to hovering at a preset hovering angle α, the vehicle door 1000 enters the hovering area, and when the vehicle door 1000 located in the hovering area stops moving, the stop controller can control the drive motor 522 to drive the second stop member 521 to rotate to engage the ring gear portion 410 to stop the ring gear portion 410.

[0121] That is to say, when the vehicle door 1000 is closed, the vehicle door 1000 is located in the non-hovering area, the second stopper 521 and the ring gear portion 410 remain in a separated state, and are not controlled by the contact switch 523, so as to facilitate the subsequent opening of the vehicle door 1000; and when the preset hovering angle α≤opening angle≤maximum opening angle, the vehicle door 1000 enters the hovering area and is controlled by the contact switch 523 to achieve hovering.

[0122] The operation process of the limiter in this embodiment is described in detail below using the process of opening the door 1000:

[0123] like Figure 1 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 As shown, when the vehicle door 1000 is closed, the vehicle door 1000 is located in the non-hovering area, and the stop controller controls the driving motor 522 to rotate so that the second stopper 521 is separated and releases the ring gear part 410, and the screw nut 400 can rotate at this time.

[0124] like Figure 1 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 As shown, after the door 1000 is unlocked, the reaction force generated by the sealing member recovering its deformation will pop open the door 1000, and the door 1000 will open, and the screw nut 400 will move away from the vehicle body connecting frame 200 along with the door connecting frame 300, that is, Fig. 9 Move to the middle right.

[0125] When the vehicle door 1000 is opened to the preset hovering angle α, the vehicle door 1000 is located in the hovering area. When the vehicle door 1000 located in the hovering area stops moving, the stop controller controls the driving motor 522 to rotate so that the second stopper 521 is engaged with the ring gear 410 to stop the ring gear 410. At this time, the screw nut 400, the second stopper 521 and the vehicle door connecting frame 300 are locked with each other, and the vehicle door 1000 can hover at the preset hovering angle α.

[0126] like Figure 1 , Figure 8 , Fig. 9 , Fig.10 and Fig.12 As shown, when the vehicle door 1000 located in the hovering area continues to open, the vehicle door connecting frame 300 will drive the second stopper 521 to continue to move away from the vehicle body connecting frame 200, that is, Fig. 9 The second stopper 521 slides in contact with the flange sliding surface 421, so that the second stopper 521 is away from and partially offset from the gear ring portion 410, and the screw nut 400 is away from the meshing position in the door connecting frame 300 until it touches the Fig. 9 The contact switch 523 on the left side. At this time, the reset elastic member 710 on one side of the screw nut 400 is compressed, and the reset elastic member 710 on the other side of the screw nut 400 is extended. The contact switch 523 generates a trigger signal and sends it to the stop controller. The controller responds to the trigger signal to control the drive motor 522 to drive the second stop member 521 to rotate, so that the second stop member 521 is separated and releases the ring gear part 410. The screw nut 400 will rotate and can move with the door connecting frame 300, and the door 1000 can open.

[0127] like Figure 1 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 As shown, when the vehicle door 1000 located in the hovering area stops moving at a certain opening angle, the reset elastic member 710 gradually recovers its deformation until the lead screw nut 400 returns to the meshing position, thereby disconnecting the lead screw nut 400 from the contact switch 523, and the trigger signal is disconnected. The stop controller controls the drive motor 522 to drive the second stop member 521 to rotate to the meshing gear ring part 410 to stop the gear ring part 410. At this time, the lead screw nut 400, the second stop member 521 and the vehicle door connecting frame 300 are locked with each other, and the vehicle door 1000 can hover.

[0128] When the door 1000 located in the hovering area needs to be closed, the operation is as follows:

[0129] The door connecting frame 300 will drive the second stopper 521 to move toward the side close to the vehicle body connecting frame 200, that is, Fig. 9 The second stopper 521 slides in contact with the flange sliding surface 421, so that the second stopper 521 is away from and partially offset from the gear ring portion 410, and the screw nut 400 is away from the meshing position in the door connecting frame 300 until it touches the Fig. 9 The contact switch 523 on the middle right generates a trigger signal and sends it to the stop controller, which responds to the trigger signal to control the drive motor 522 to drive the second stop member 521 to rotate, so that the second stop member 521 separates the ring gear part 410, and the screw nut 400 will rotate and can move with the door connecting frame 300, so that the door 1000 can move, and the door 1000 can move freely until it is closed.

[0130] Example 3

[0131] Fig.13 , Fig.14 The door stopper in this embodiment is different from that in Embodiment 1 as follows:

[0132] In this embodiment, the stop mechanism is a third stop mechanism 530, the stop member is a third stop member 531, and the third stop member 531 is a gear that meshes with the ring gear portion 410; the third stop mechanism 530 also includes a brake 532 and a damping controller 533 that are connected to each other. The damping controller 533 can be a gyroscope sensor or a Hall sensor. The damping controller 533 controls the resistance of the brake 532 by changing the voltage. The third stop member 531 is connected to the brake 532 by key connection, interference fit, etc., so that the brake 532 can control the rotation of the third stop member 531.

[0133] When the door 1000 moves, the third stopper 531 and the gear ring 410 release the stop cooperation, so that the third stopper mechanism 530 releases the screw nut 400. Specifically, there are two situations. The first situation is that when the door 1000 moves, the damping controller 533 controls the brake 532 to stop applying resistance, and the screw nut 400 is released and can rotate freely, so that the screw nut 400 moves with the door connecting frame 300, and the door 1000 can be opened and closed.

[0134] The second situation is that when the vehicle door 1000 moves, the damping controller 533 controls the brake 532 to apply a first preset resistance, and the first preset resistance is the resistance that the lead screw nut 400 needs to overcome for damping rotation. In other words, when subjected to an external force greater than the first preset resistance, the lead screw nut 400 and the third stopper 531 can rotate relative to each other, and then the lead screw nut 400 can move with the vehicle door connecting frame 300, and the vehicle door 1000 can be opened and closed. It can be seen that the application of the first preset resistance can control the opening and closing speed and opening and closing force of the vehicle door 1000.

[0135] When the vehicle door 1000 stops moving, the third stopper 531 and the ring gear part 410 cooperate to stop the third stop mechanism 530 to prevent the screw nut 400 from rotating. Specifically, the damping controller 533 controls the brake 532 to apply a second preset resistance, which is greater than the first preset resistance. Under the stopping action of the second preset resistance, the third stopper 531 will stop rotating, and the third stopper 531, the screw nut 400 and the vehicle door connecting frame 300 are locked, and the vehicle door 1000 hovers at the current opening angle.

[0136] When the door 1000 moves again, the brake 532 stops applying resistance or applies a first preset resistance, the screw nut 400 rotates freely or with damping, the locking balance between the third stopper 531, the screw nut 400 and the door connecting frame 300 is broken, and the screw nut 400 can move with the door connecting frame 300.

[0137] It can be seen that, in the first aspect, the limiters of Embodiment 1, Embodiment 2 and Embodiment 3 can be replaced with each other. Specifically, the door connecting frame 300 can also install the third stop mechanism 530 through the second cavity 320 to improve the universal performance of the door limiter.

[0138] In the second aspect, the stopper of this embodiment can be used regardless of the power supply state or the power-off state. Specifically, in the power-off state, the brake 532 will stop applying resistance, and the screw nut 400 will rotate freely, thereby allowing the door 1000 to move, which can prevent the door 1000 from getting stuck after an abnormal power failure.

[0139] It should be noted here that, in the present embodiment, the first preset resistance and the second preset resistance required in different scenarios are different. Specifically, the first preset resistance required for the opening and closing action of the door 1000 on a flat road is different from the first preset resistance required for the opening and closing action of the door 1000 on a sloping road. The second preset resistance required for the hovering of the door 1000 on a flat road is different from the second preset resistance required for the opening and closing action of the door 1000 on a sloping road. This is because the damping controller 533 of the Hall sensor or the gyroscope sensor can generate different voltages on a flat road and a sloping road, thereby causing the damping controller 533 to generate different resistances. In this way, the door limiter of the present application can be better utilized in different working scenarios, thereby improving the user experience.

[0140] Optionally, when the door 1000 is closed, the damping controller 533 can control the brake 532 to stop applying resistance. This is to reduce the control difficulty of the limiter. Specifically, when the door 1000 is unlocked again, the seal between the door 1000 and the vehicle body 2000 recovers its deformation, and the reaction force generated by the seal recovering its deformation will drive the door 1000 to open, so as to prevent the third stopper 531 from blocking the screw nut 400 from rotating during the process, causing the door 1000 to get stuck or the opening resistance to be too large.

[0141] In this embodiment, the door 1000 opens as follows:

[0142] When the vehicle door 1000 is closed, the vehicle door 1000 is located in the non-hovering area, the damping controller 533 stops applying resistance, the third stopper 531 releases the ring gear portion 410, the screw nut 400 is released and rotates freely, and the movement of the vehicle door 1000 is not restricted.

[0143] When the vehicle door 1000 in a closed state is opened to enter the hovering area, when the vehicle door 1000 stops moving, the damping controller 533 can control the brake 532 to apply a second preset resistance, and the third stopper 531 prevents the screw nut 400 from rotating, so that the vehicle door 1000 hovers.

[0144] When the car door 1000 in the hovering area continues to open, the damping controller 533 can control the brake 532 to apply a first preset resistance, and the third stopper 531 releases the ring gear part 410, so that the lead screw nut 400 is released and rotates damped; or the damping controller 533 controls the brake 532 not to apply resistance, the third stopper 531 releases the ring gear part 410, the lead screw nut 400 is released and rotates freely, and the movement of the car door 1000 is not restricted.

[0145] When the vehicle door 1000 in the hovering area stops moving, the brake 532 applies a second preset resistance, stops the gear ring portion 410 through the third stopper 531, and thereby prevents the screw nut 400 from rotating, thereby achieving the hovering of the vehicle door 1000.

[0146] Example 4

[0147] like Figure 1 , Figure 2 and Figure 8 As shown, this embodiment discloses a vehicle door assembly, which includes a vehicle door 1000 and a vehicle door stopper, wherein the vehicle door stopper is installed in the vehicle door 1000, the vehicle door 1000 is rotatably connected to the vehicle body 2000, the vehicle body connecting frame 200 in the vehicle door stopper is connected to the vehicle body 2000, and the vehicle door connecting frame 300 is connected to the vehicle door 1000. Through the setting of the vehicle door stopper, a hovering area and a non-hovering area of ​​the vehicle door 1000 are established, wherein 0° to a preset hovering angle α (excluding α) is the non-hovering area, and a preset hovering angle α to a maximum opening angle α+β is the hovering area, and the vehicle door in the hovering area will be hovered by locking between the vehicle door connecting frame 300, the stopper and the screw nut 400 when the vehicle stops moving.

[0148] Although the present invention is disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope defined by the claims of the present invention.

Claims

1. A door stopper, characterized in that: include: A screw rod (100) and a vehicle body connecting frame (200) arranged at one end of the screw rod (100); A vehicle door connecting frame (300) is movably sleeved on the screw rod (100); A screw nut (400) is arranged in the vehicle door connecting frame (300), the screw nut (400) is in spiral transmission cooperation with the screw (100), and a gear ring portion (410) is arranged on the outer surface of the screw nut (400); A stop mechanism is provided with a stopper, wherein the stopper is movably arranged in the vehicle door connecting frame (300); When the vehicle door (1000) moves, the stopper and the gear ring portion (410) release the stopper cooperation, so that the stopper mechanism releases the screw nut (400); When the vehicle door (1000) stops moving, the stopper and the gear ring portion (410) cooperate to stop, so that the stop mechanism blocks the screw nut (400) from rotating.

2. The door stopper according to claim 1, characterized in that: The stopper is a movable stopper; A stop flange (420) is arranged on the outer periphery of the screw nut (400); the gear ring portion (410) and the stop flange (420) are arranged in sequence along the axial direction of the screw nut (400); and a flange sliding surface (421) is arranged on the stop flange (420) in an inclined manner toward one side of the gear ring portion (410). When the vehicle door (1000) moves, the screw nut (400) leaves the meshing position in the vehicle door connecting frame (300), and the stopper slides along the flange sliding surface (421) to move away from the gear ring portion (410) and separate from the gear ring portion (410); When the vehicle door (1000) stops moving, the screw nut (400) returns to the meshing position in the vehicle door connecting frame (300), and the stopper meshes with the gear ring part (410).

3. The door stopper according to claim 2, characterized in that: It also includes a resetting elastic member (710), wherein the resetting elastic member (710) is respectively connected to the screw nut (400) and the vehicle door connecting frame (300); When the vehicle door (1000) stops moving, the resetting elastic member (710) drives the screw nut (400) to move to an engagement position in the vehicle door connecting frame (300); When the vehicle door (1000) moves, the screw nut (400) leaves the meshing position and adjusts the degree of deformation of the reset elastic member (710).

4. The door stopper according to claim 3, characterized in that: The stopping mechanism is a first stopping mechanism (510), the stopping member is a first stopping member (511), and the first stopping mechanism (510) further comprises a first elastic member (512); A first cavity (310) is arranged in the door connecting frame (300), and the first stopper (511) and the first elastic member (512) are both arranged in the first cavity (310) and are arranged in sequence in a direction away from the screw nut (400).

5. The door stopper according to claim 4, characterized in that: The first stopper (511) is provided with a thrust groove, and the thrust groove has a first sliding surface (5111) arranged obliquely. The first stop mechanism (510) further comprises a push block (513), the push block (513) comprising a base (5131) and an extension portion (5132); wherein the base (5131) is movably sleeved with the screw rod (100) and is located between the vehicle body connecting frame (200) and the vehicle door connecting frame (300); the extension portion (5132) is connected to the base (5131), and the extension portion (5132) passes through the vehicle door connecting frame (300) and faces the first sliding surface (5111); The first stopper (511) can move along with the vehicle door connecting frame (300) toward a side close to the vehicle body connecting frame (200), so that the first sliding surface (5111) slides in contact with the extension portion (5132); When the vehicle door (1000) is in a closed state, or when the opening angle of the vehicle door (1000) is smaller than a preset hovering angle, the push block (513) drives the first stopper (511) to separate from the gear ring portion (410) via the extension portion (5132) and the first sliding surface (5111); When the vehicle door (1000) is in the hovering area, the vehicle door connecting frame (300) and the base (5131) are separated from each other, and the extension portion (5132) is located outside the movement path of the first sliding surface (5111); the opening angle of the vehicle door (1000) in the hovering area is greater than or equal to the preset hovering angle.

6. The door stopper according to claim 3, characterized in that: The stop mechanism is a second stop mechanism (520), the stop member is a second stop member (521), and the second stop mechanism (520) further comprises a drive motor (522); A second cavity (320) is disposed in the vehicle door connecting frame (300), the second stopper (521) is disposed in the second cavity (320), and the driving motor (522) is mounted on the vehicle door connecting frame (300) and connected to the second stopper (521); The driving motor (522) can drive the second stopper (521) to rotate, so that the second stopper (521) is separated from or engaged with the gear ring part (410).

7. The door stopper according to claim 6, characterized in that: The door connecting frame (300) is also provided with a stop controller and a contact switch (523), and the contact switch (523) is arranged in the second cavity (320); The lead screw nut (400) can touch the contact switch (523) as the vehicle door (1000) moves, so that the contact switch (523) transmits a trigger signal to the stop controller, and the stop controller can respond to the trigger signal to control the drive motor (522) to drive the second stop member (521) to rotate until it is separated from the gear ring portion (410); as well as, The screw nut (400) can be separated from the contact switch (523) when the vehicle door (1000) stops, and the stop controller can control the drive motor (522) to drive the second stop member (521) to rotate to engage with the gear ring part (410) when the trigger signal is disconnected.

8. The door stopper according to claim 1, characterized in that: The stop mechanism is a third stop mechanism (530), the stop member is a third stop member (531), and the third stop member (531) is a gear meshing with the gear ring portion (410); the third stop mechanism (530) further comprises a brake (532) and a damping controller (533) connected to each other, and the stop member is sleeved on the brake (532); When the vehicle door (1000) moves, the damping controller (533) controls the brake (532) to stop applying resistance, or controls the brake (532) to apply a first preset resistance that damps the rotation of the lead screw nut (400); When the vehicle door (1000) stops moving, the damping controller (533) controls the brake (532) to apply a second preset resistance to stop the screw nut (400) from rotating; The second preset resistance is greater than the first preset resistance.

9. The door stopper according to claim 1, characterized in that: When the vehicle door (1000) is in a closed state, the stopper releases the gear ring portion (410); When the vehicle door (1000) in a closed state is opened to enter a hovering area, the vehicle door (1000) can cause the stopper to stop the gear ring portion (410) when the movement stops, and can cause the stopper to release the gear ring portion (410) when the movement starts; The area where the opening angle of the vehicle door (1000) is greater than or equal to the preset hovering angle is the hovering area, and the opening angle is 0° when the vehicle door (1000) is in a closed state.

10. A vehicle door assembly, characterized in that: The vehicle door stopper comprises the vehicle door stopper according to any one of claims 1 to 9.

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