A self-actuated automobile door lock

Abstract

The present invention discloses a self-suction driven automobile door lock, including a locking assembly and an opening and closing assembly, wherein a locking groove for the locking assembly to work is provided on the inner surface of the door body, wherein the locking assembly includes a self-locking mechanism for completing the closing and locking of the door body and a buffer mechanism for realizing damping and buffering during the opening and closing process of the door body, wherein the self-locking mechanism is arranged inside the door body and intermittently engaged with the vehicle body, and wherein the buffer mechanism is arranged inside the door body and is transmission-connected with the self-locking mechanism. The present invention automatically completes the locking and fixing effect between the vehicle door and the vehicle body when the vehicle door is in a closed state by arranging the locking assembly, and at the same time, the buffer mechanism effectively reduces the resistance when the vehicle door is opened and provides buffering damping when the vehicle door is closed; by arranging the suction mechanism, the self-suction closing of the vehicle door is realized after the vehicle door is opened; by arranging the positioning mechanism, when the vehicle door needs to be normally open, it is realized by the positioning mechanism, and the normally open angle of the vehicle door can be freely adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of automobile door locks, in particular to a self-engaging and driven automobile door lock. Background Art

[0002] Car door locks are a key component of the vehicle safety system, mainly used to control the opening and closing status of the car door to ensure the safety of the vehicle and the people inside. The self-closing function of the car door lock is a door lock system designed to improve vehicle safety and ease of use. This function allows the car door to be automatically locked after closing, without the driver or passengers manually operating the lock button.

[0003] After searching, the Chinese patent with publication number CN115324433B includes a lock bottom plate; a drive shaft, a ratchet, a pawl, an opening rocker arm, and a clutch arm are rotatably installed on the lock bottom plate; the drive shaft is connected to the self-priming rocker arm through the outer periphery of the drive shaft; a self-priming rocker arm boss is provided on the self-priming rocker arm; the self-priming rocker arm is hinged to one end of the self-priming pull rod; a curved hook is provided at the other end of the self-priming pull rod; a clamping column is provided at one end of the ratchet wheel to match it; the other end face of the ratchet wheel is a ratchet wheel sliding surface; the two sides of the ratchet wheel sliding surface are respectively a stop surface and a lock buckle matching groove; a contact boss is provided on the pawl; one side of the contact boss is a stop groove; one end of the opening rocker arm is hinged to one end of the ratchet pawl linkage plate; a linkage plate boss is provided in the middle of the ratchet pawl linkage plate; a linkage plate hinge groove is provided at the other end of the ratchet pawl linkage plate; a ratchet pawl pin is provided at the end of the connecting pawl; the ratchet pawl pin slides in the linkage plate hinge groove. The above patent has a simple structure, is safe and reliable, and occupies little space.

[0004] However, the above patent is only applicable to the use scenario when the car door is completely closed. At this time, the lock matching groove can be smoothly inserted into the card platform to complete the lock self-priming process. But when the car door is not closed normally or there is a small opening and closing gap between the car door and the car body, the lock matching groove and the card platform are not in the corresponding position, resulting in the above patent being difficult to achieve the expected locking effect; on the other hand, the locking process in the above patent still needs to control the switch state of the drive shaft to achieve, and it is difficult to achieve the effect of automatic locking. Summary of the invention

[0005] The purpose of the present invention is to provide a self-actuating driven automobile door lock, which has the advantages of automatic locking and anti-interference, and solves the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-priming driven automobile door lock, comprising a locking assembly arranged inside a door body and an opening and closing assembly in transmission connection with the locking assembly, a locking groove for the locking assembly to work is provided on the inner surface of the door body, the locking assembly comprises a self-locking mechanism for completing the closing and locking of the door body and a buffer mechanism for realizing damping and buffering during the opening and closing process of the door body, the self-locking mechanism is arranged inside the door body and intermittently clamped with the vehicle body, and the buffer mechanism is arranged inside the door body and in transmission connection with the self-locking mechanism;

[0007] The opening and closing assembly includes a suction mechanism for completing the automatic closing process of the door body and a positioning mechanism for controlling the normally open angle limit of the door body. The suction mechanism is arranged at the connection between the vehicle body and the door body and is transmission connected to the buffer mechanism. The positioning mechanism is arranged inside the vehicle body and is transmission connected to the suction mechanism.

[0008] Preferably, the self-locking mechanism includes a manually controlled handle, one end of the handle located inside the door body is penetrated by and fixedly connected to a fixed shaft, the top end of the fixed shaft is fixedly connected to a torsion spring and the top end of the torsion spring is fixedly connected to the inside of the door body, the bottom end of the fixed shaft is penetrated by and fixedly connected to bevel gear one, one side of the upper surface of bevel gear one is meshed and transmission connected with bevel gear two, the end of bevel gear two away from bevel gear one is fixedly connected to a threaded shaft, a threaded sleeve is threaded on the outer contour of the threaded shaft, a guide block is fixedly connected to the outer contour of the threaded sleeve and the guide block is limitedly slidably connected to the inside of the door body, the end of the threaded sleeve away from the threaded shaft abuts against a lock tongue, the end of the lock tongue away from the threaded sleeve is penetrated by and slidably connected to a fixed seat, and the fixed seat is fixedly connected to the inner contour of a vehicle body, and a compression spring is fixedly connected between the lock tongue and the inner contour of the vehicle body.

[0009] Preferably, the buffer mechanism includes a bevel gear three meshing and transmission connected to the upper surface of bevel gear one on a side away from bevel gear two, the end of bevel gear three away from bevel gear one is fixedly connected to a transmission wheel one, a rack is meshed and transmission connected to the outer contour of the transmission wheel one, and the rack is limitedly slidably connected to the inside of the door body, a limiting pin is fixedly connected to the outer contour of the rack near the bottom end, the bottom end of the rack is meshed and transmission connected to the transmission wheel two, a transmission ring is fixedly connected to the inner contour of the transmission wheel two, and an air inlet hole and an exhaust hole are opened on the surface of the transmission ring.

[0010] Preferably, the buffer mechanism also includes a piston cylinder covering the outer surfaces of the inlet hole and the exhaust hole, the internal limiting sliding connection of the piston cylinder is connected to a piston rod, and the piston rod passes through a transmission ring and extends outward, and the outer surface of the piston cylinder is penetrated and fixedly connected with an exhaust pipe, an intake pipe and a compensation pipe, and the other ends of the exhaust pipe, the intake pipe and the compensation pipe are commonly connected to an air pump.

[0011] Preferably, the initial positions of the exhaust pipe and the exhaust hole correspond to each other, the initial positions of the intake pipe and the intake hole have a deflection angle and the deflection angle is set to forty-five degrees, and a pressing electrode is provided on the surface of the limit pin and the pressing electrode controls the start and stop state of the air pump.

[0012] Preferably, the suction mechanism includes a telescopic cylinder fixedly connected to the outer contour of the piston rod, a fixed cylinder is sleeved on the outer contour of the telescopic cylinder, an end of the fixed cylinder away from the piston rod is fixedly connected to a bracket one, an end of the bracket one away from the fixed cylinder passes through and is fixedly connected to an opening and closing shaft, a bracket two passes through and is limitedly rotatably connected to the outer contour of the middle section of the opening and closing shaft, a bevel gear disk is fixedly connected to the inner contour of the bracket two, and the bevel gear disk is passed through and is limitedly rotatably connected to the opening and closing shaft.

[0013] Preferably, the suction mechanism also includes a positioning wheel meshing and transmission connected to the upper surface of the bevel gear disk close to the fixed cylinder side, one side of the positioning wheel is fixedly connected to an extension rod and the extension rod passes through and is rotatably connected to the inside of the fixed cylinder, the end of the extension rod away from the positioning wheel is fixedly connected to a transmission rod, a spiral groove for limiting the rotation of the transmission rod is provided on the outer contour of the telescopic cylinder, a fixed disk is fixedly connected to the inside of the middle section of the telescopic cylinder, a tension spring is fixedly connected between the fixed disk and the bracket and the tension spring is located inside the fixed cylinder, a guide rail is fixedly connected to the inner contour of the fixed cylinder, and a guide groove for limiting the sliding of the guide rail is provided on the outer contour of the telescopic cylinder.

[0014] Preferably, the positioning mechanism includes a connecting rod connected to the outer contour of the bottom end of the opening and closing shaft through a damping friction transmission, and the connecting rod is arranged inside the vehicle body, the bottom end of the connecting rod is fixedly connected to the front fork and the rear fork, the bottom ends of the front fork and the rear fork are penetrated by a guide plate, and the guide plate is arranged inside the vehicle body, the upper surface of the guide plate is provided with a rotation groove for guiding and limiting the front fork and the rear fork, the upper surface of the guide plate is provided with a partition plate in the rotation groove for guiding the front fork, an X key is arranged between the two rotation grooves on the upper surface of the guide plate, the center of the X key is penetrated and limitedly rotatably connected to the limiting shaft, and the limiting shaft is fixedly connected to the inside of the vehicle body.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention automatically completes the locking and fixing effect between the door and the vehicle body by setting a locking assembly when the door is closed. At the same time, the buffer mechanism effectively reduces the resistance when the door is opened, and provides buffer damping when the door is closed to avoid damage caused by closing the door too quickly.

[0017] 2. The present invention provides a suction mechanism to achieve self-closing of the door after the door is opened, thereby reducing the risk of people not closing the door when leaving the vehicle.

[0018] 3. The present invention provides a positioning mechanism. When the door needs to be always open, it can be realized through the positioning mechanism, and the angle of the door being always open can be freely adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the main structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the position relationship of the self-locking mechanism of the present invention;

[0021] Figure 3 An exploded view of the self-locking mechanism of the present invention;

[0022] Figure 4 It is a schematic diagram of the connection relationship between the buffer mechanism and the self-locking mechanism of the present invention;

[0023] Figure 5 An exploded view of the buffer mechanism of the present invention;

[0024] Figure 6 This is a schematic diagram of the position relationship of the opening and closing components of the present invention;

[0025] Figure 7 It is an exploded diagram of the suction mechanism of the present invention;

[0026] Figure 8 It is an exploded view of the positioning mechanism of the present invention;

[0027] Fig. 9 It is the overall workflow diagram of the present invention.

[0028] In the figure: 1, vehicle body; 11, door body; 12, locking groove; 2, handle; 21, fixed shaft; 22, torsion spring; 23, bevel gear 1; 24, bevel gear 2; 25, threaded shaft; 26, threaded sleeve; 27, guide block; 28, lock tongue; 29, fixed seat; 210, compression spring; 3, bevel gear 3; 31, transmission wheel 1; 32, rack; 33, limit pin; 34, transmission wheel 2; 35, transmission ring; 36, air inlet; 37, exhaust hole; 4, piston cylinder; 41, piston rod ; 42. Exhaust pipe; 43. Intake pipe; 44. Compensating pipe; 45. Air pump; 5. Telescopic cylinder; 51. Fixed cylinder; 52. Bracket 1; 53. Opening and closing shaft; 54. Bracket 2; 55. Bevel gear plate; 6. Positioning wheel; 61. Extension rod; 62. Transmission rod; 63. Spiral groove; 64. Guide groove; 65. Guide rail; 66. Fixed plate; 67. Tension spring; 7. Connecting rod; 71. Front fork; 72. Rear fork; 73. Guide plate; 74. Partition plate; 75. Limiting shaft; 76. X key. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Embodiment 1:

[0031] See also Figures 1 to 9 The present invention provides a technical solution: a self-closing driven automobile door lock, comprising a locking assembly arranged inside a door body 11 and an opening and closing assembly connected to the locking assembly in a transmission manner, wherein a locking groove 12 for the locking assembly to work is provided on the inner surface of the door body 11, the locking assembly comprises a self-locking mechanism for completing the closing and locking of the door body 11 and a buffer mechanism for realizing damping and buffering during the opening and closing process of the door body 11, the self-locking mechanism is arranged inside the door body 11 and intermittently engaged with the vehicle body 1, and the buffer mechanism is arranged inside the door body 11 and connected to the self-locking mechanism in a transmission manner;

[0032] The opening and closing assembly includes a suction mechanism for completing the automatic closing process of the door body 11 and a positioning mechanism for controlling the normally open angle limit of the door body 11. The suction mechanism is arranged at the connection between the vehicle body 1 and the door body 11 and is transmission-connected to the buffer mechanism. The positioning mechanism is arranged inside the vehicle body 1 and is transmission-connected to the suction mechanism.

[0033] In the present invention, the locking groove 12 and the self-locking mechanism are used to achieve a locking and fixing effect between the door body 11 and the vehicle body 1 when the door body 11 is in a closed state. At the same time, when a person needs to open the door body 11, the locking state can be released by controlling the rotation of the self-locking mechanism, and the door body 11 can be further pushed and pulled to realize its opening and closing process.

[0034] At the same time, the self-locking mechanism drives the buffer mechanism to work synchronously, and the buffer mechanism further reduces the resistance encountered by personnel when pushing and pulling to open the door body 11 to improve the personnel's user experience. On the other hand, when the personnel stop controlling the self-locking mechanism, the door body 11 automatically closes under the action of the suction mechanism. During this process, the self-locking mechanism resets and drives the buffer mechanism to work synchronously. The buffer mechanism further damps the door body 11 to avoid the door body 11 closing too fast and causing damage between it and the vehicle body 1.

[0035] Furthermore, when people push and pull the door body 11 to open it, the suction mechanism works synchronously and stores energy. When people stop pushing and pulling the door body 11, the suction mechanism automatically resets and drives the door body 11 to gradually close, thereby completing the function of automatic closing of the door body 11, that is, the self-locking effect when people leave the car.

[0036] On the other hand, when it is necessary to keep the door body 11 in a normally open state, the door body 11 is pushed and pulled to open it to a set angle. At this time, an interlocking relationship is formed between the positioning mechanism and the door body 11, and the door body 11 cannot be closed along with the resetting of the suction mechanism, that is, the door body 11 remains in a normally open state; subsequently, when it is necessary to close the door body 11, the door body 11 is pushed and pulled again to continue to open it to a certain angle. At this time, the interlocking relationship between the positioning mechanism and the door body 11 is released, and the door body 11 can be automatically closed along with the suction mechanism; and the normally open angle of the door body 11 can be freely adjusted by controlling the positioning mechanism.

[0037] Embodiment 2:

[0038] See also Figure 2-Figure 3 This embodiment further illustrates the following on the basis of the first embodiment:

[0039] The self-locking mechanism includes a manually controlled handle 2, one end of the handle 2 located inside the door body 11 is penetrated and fixedly connected with a fixed shaft 21, the top end of the fixed shaft 21 is fixedly connected with a torsion spring 22, and the top end of the torsion spring 22 is fixedly connected to the inside of the door body 11, the bottom end of the fixed shaft 21 is penetrated and fixedly connected with a bevel gear 1 23, one side of the upper surface of the bevel gear 1 23 is meshed and transmission-connected with a bevel gear 2 24, and the end of the bevel gear 24 away from the bevel gear 1 23 is fixedly connected with a threaded shaft 25, a threaded sleeve 26 is screwed on the outer contour of the threaded shaft 25, a guide block 27 is fixedly connected to the outer contour of the threaded sleeve 26, and the guide block 27 is limitedly slidably connected to the inside of the door body 11, the end of the threaded sleeve 26 away from the threaded shaft 25 abuts against a lock tongue 28, the end of the lock tongue 28 away from the threaded sleeve 26 passes through and is slidably connected to a fixed seat 29, and the fixed seat 29 is fixedly connected to the inner contour of the vehicle body 1, and a compression spring 210 is fixedly connected between the lock tongue 28 and the inner contour of the vehicle body 1.

[0040] As can be seen from the first embodiment, a person can release the locked state between the door body 11 and the vehicle body 1 by controlling the self-locking mechanism. Figure 2 As shown, taking the handle 2 located on the inside of the car as an example, when a person needs to open the door body 11 and leave the car, he pulls the handle 2, and the handle 2 drives the fixed shaft 21 and the bevel gear 1 23 to rotate synchronously, and the torsion spring 22 is twisted and stores energy synchronously, and the bevel gear 1 23 further drives the bevel gear 2 24 and the threaded shaft 25 to rotate synchronously. At this time, the threaded shaft 25 has a tendency to drive the threaded sleeve 26 to rotate, and because the guide block 27 is limitedly slidably connected to the inside of the door body 11, that is, under the restriction of the guide block 27, the threaded sleeve 26 cannot rotate with the threaded shaft 25, that is, the rotation of the threaded shaft 25 will cause the threaded sleeve 26 and the guide block 27 to gradually extend outward due to the threaded connection between the threaded shaft 25 and the threaded sleeve 26.

[0041] Furthermore, the gradually extended threaded sleeve 26 presses against the locking tongue 28 and synchronously extends from the inside of the locking groove 12 and gradually compresses the compression spring 210, setting the maximum rotation angle of the handle 2 to forty-five degrees. When the handle 2 is rotated to the maximum angle, the locking tongue 28 is synchronously extended to the extreme position. At this time, the locking tongue 28 does not contact the locking groove 12, that is, the clamping relationship between the vehicle body 1 and the door body 11 is released. At this time, the locking and fixing effect between the vehicle body 1 and the door body 11 disappears, and a person can realize the opening process of the door body 11 by pushing the door body 11.

[0042] Embodiment three:

[0043] See also Figure 4-Figure 5 This embodiment further illustrates the following on the basis of the second embodiment:

[0044] The buffer mechanism includes a bevel gear three 3 meshing and transmission connected to the upper surface of the bevel gear one 23 on the side away from the bevel gear two 24, the bevel gear three 3 is fixedly connected to the transmission wheel one 31 at one end away from the bevel gear one 23, a rack 32 is meshed and transmission connected to the outer contour of the transmission wheel one 31, and the rack 32 is limitedly slidably connected to the inside of the door body 11, a limiting pin 33 is fixedly connected to the outer contour of the rack 32 near the bottom end, the bottom end of the rack 32 is meshed and transmission connected to the transmission wheel two 34, a transmission ring 35 is fixedly connected to the inner contour of the transmission wheel two 34, and an air inlet hole 36 and an exhaust hole 37 are opened on the surface of the transmission ring 35.

[0045] The buffer mechanism also includes a piston cylinder 4 covering the outer surfaces of the inlet hole 36 and the exhaust hole 37, the internal limiting sliding connection of the piston cylinder 4 is connected with a piston rod 41, and the piston rod 41 passes through the transmission ring 35 and extends outward, and the outer surface of the piston cylinder 4 is penetrated and fixedly connected with an exhaust pipe 42, an intake pipe 43 and a compensation pipe 44, and the other ends of the exhaust pipe 42, the intake pipe 43 and the compensation pipe 44 are commonly connected to an air pump 45.

[0046] The initial positions of the exhaust pipe 42 and the exhaust hole 37 correspond to each other, the initial positions of the intake pipe 43 and the intake hole 36 have a deflection angle and the deflection angle is set to forty-five degrees, and a pressing electrode is provided on the surface of the limit pin 33 and the pressing electrode controls the start and stop state of the air pump 45.

[0047] When the person turns the handle 2 to unlock the lock, the buffer mechanism works synchronously. At this time, the rotation of the bevel gear 23 drives the bevel gear 3 3 and the transmission wheel 31 to rotate synchronously. The rotation of the transmission wheel 31 further drives the rack 32 to start rising synchronously. The rack 32 further drives the limit pin 33 to rise synchronously and drives the transmission wheel 2 34 to rotate synchronously. When the limit pin 33 rises to the point where it contacts the air pump 45, the limit pin 33 and the rack 32 are resisted by the air pump 45 and cannot continue to rise. Furthermore, the transmission wheel 31, the bevel gear 3 3 and the bevel gear 23 cannot continue to rotate. At this time, the rotation of the handle 2 reaches the maximum angle.

[0048] As can be seen from the above, the maximum rotation angle of the transmission wheel 2 34 is also forty-five degrees. At this time, the air inlet 36 corresponds to the position of the air inlet pipe 43 and is connected, while there is an offset angle between the exhaust hole 37 and the exhaust pipe 42, which causes the exhaust pipe 42 to be blocked; on the other hand, when the limit pin 33 is in contact with the air pump 45, the pressing electrode on the surface of the limit pin 33 sends a signal and controls the air pump 45 to start working, and the piston rod 41 gradually introduces nitrogen into the interior of the piston cylinder 4 through the air inlet pipe 43 that is connected at this time, and the exhaust pipe 42 is in a blocked state at this time, that is, the introduction of nitrogen further causes the piston rod 41 to slide inside the piston cylinder 4, and the sliding of the piston rod 41 synchronously pulls the suction mechanism, thereby reducing the resistance generated by the suction mechanism during the energy storage process when a person pushes the door body 11 to open, so as to ensure the opening effect of the door body 11.

[0049] Similarly, when the person stops pulling the handle 2 after leaving the vehicle, the torsion spring 22 drives the handle 2 and the fixed shaft 21 to reset, and the bevel gear 1 23 further drives the threaded sleeve 26 to extend and retract and the rack 32 to descend. As the threaded sleeve 26 contracts, it gradually reduces the abutting pressure on the lock tongue 28. At this time, the rebound of the compression spring 210 drives the lock tongue 28 to reset, and then when the door body 11 is fully closed, the lock tongue 28 is engaged with the locking groove 12 to achieve the locking and fixing effect between the door body 11 and the vehicle body 1 again; at the same time, the descent of the rack 32 causes the limit pin 33 to disengage from the air pump 45, and the air pump 45 stops working at this time, and the rack 32 drives the rotation of the transmission wheel 2 34 to further cause the exhaust hole 37 to correspond to the position of the exhaust pipe 42, that is, at this time the exhaust pipe 42 is connected and the intake pipe 43 is blocked.

[0050] Furthermore, during the closing process of the door body 11, the piston rod 41 moves synchronously with the suction mechanism and compresses the nitrogen inside the piston cylinder 4, so that the nitrogen flows back into the air pump 45 along the exhaust pipe 42. During this process, the compression and diversion of the nitrogen can effectively buffer and damp the resetting of the suction mechanism, thereby reducing the damage to the door body 11 caused by the rapid resetting of the suction mechanism.

[0051] It should be noted that the provision of the compensation tube 44 can effectively maintain the air pressure balance inside the piston cylinder 4, thereby avoiding the situation in which the piston rod 41 is obstructed in its travel due to the air pressure difference and its buffering effect is affected during the process in which the air pump 45 injects nitrogen into the piston cylinder 4 through the intake pipe 43, or the piston rod 41 discharges the nitrogen inside the piston cylinder 4 through the exhaust pipe 42.

[0052] Embodiment 4:

[0053] See also Figure 6-Figure 7 This embodiment further illustrates the following on the basis of the third embodiment:

[0054] The suction mechanism includes a telescopic cylinder 5 fixedly connected to the outer contour of the piston rod 41, a fixed cylinder 51 is sleeved on the outer contour of the telescopic cylinder 5, the end of the fixed cylinder 51 away from the piston rod 41 is fixedly connected to a bracket 1 52, the end of the bracket 1 52 away from the fixed cylinder 51 passes through and is fixedly connected to an opening and closing shaft 53, a bracket 2 54 passes through and is limitedly rotatably connected to the outer contour of the middle section of the opening and closing shaft 53, a bevel gear disk 55 is fixedly connected to the inner contour of the bracket 2 54, and the bevel gear disk 55 is passed through and is limitedly rotatably connected to the opening and closing shaft 53.

[0055] The suction mechanism also includes a positioning wheel 6 meshing with and transmission-connected to the upper surface of the bevel gear disk 55 near the fixed cylinder 51. An extension rod 61 is fixedly connected to one side of the positioning wheel 6, and the extension rod 61 passes through and is rotationally connected to the interior of the fixed cylinder 51. A transmission rod 62 is fixedly connected to the end of the extension rod 61 away from the positioning wheel 6. A spiral groove 63 for rotationally limiting the transmission rod 62 is provided on the outer contour of the telescopic cylinder 5. A fixed disk 66 is fixedly connected to the interior of the middle section of the telescopic cylinder 5. A tension spring 67 is fixedly connected between the fixed disk 66 and the bracket 52, and the tension spring 67 is located inside the fixed cylinder 51. A guide rail 65 is fixedly connected to the inner contour of the fixed cylinder 51, and a guide groove 64 for sliding and limiting the guide rail 65 is provided on the outer contour of the telescopic cylinder 5.

[0056] It can be seen from Example 1 that when a person pushes the door body 11 to open, the suction mechanism stores energy synchronously and drives the door body 11 to close automatically after the person leaves the vehicle. When the person pushes the door body 11, the positioning wheel 6 moves synchronously with the door body 11 on the bevel gear plate 55 and rotates. At this time, the extension rod 61 and the transmission rod 62 rotate synchronously and under the guiding and limiting action of the spiral groove 63, the telescopic cylinder 5 gradually extends out from the inside of the fixed cylinder 51. In this process, the movement of the telescopic cylinder 5 is restricted by the cooperation of the guide rail 65 and the guide groove 64, so that it can only be extended and retracted along the setting direction of the fixed cylinder 51 but cannot rotate.

[0057] Furthermore, the gradual extension of the telescopic cylinder 5 synchronously drives the fixed plate 66. At this time, the tension spring 67 is stretched and stores energy. When the person leaves the vehicle, the fixed plate 66 begins to rebound and pulls the fixed plate 66 and the telescopic cylinder 5 back into the interior of the fixed cylinder 51. At this time, the spiral groove 63 guides the transmission rod 62 so that the transmission rod 62, the extension rod 61 and the positioning wheel 6 begin to reset and rotate. The reset rotation of the positioning wheel 6 causes it to move again on the bevel toothed disk 55 and return to its initial position, thereby realizing the automatic closing process of the door body 11.

[0058] It should be noted that since personnel need to overcome the tensile deformation of the tension spring 67 when pushing the door body 11, there is a problem of large resistance to opening the door body 11. At this time, in order to release the locked state of the door body 11 and the vehicle body 1, the personnel has begun to pull the handle 2, that is, the air pump 45 begins to introduce nitrogen into the piston cylinder 4, causing the piston rod 41 to contract along the piston cylinder 4. At this time, the piston rod 41 synchronously pulls the telescopic cylinder 5 to make it tend to extend from the fixed cylinder 51, thereby sharing part of the tensile deformation resistance of the tension spring 67 through the piston rod 41, thereby reducing the resistance when personnel open the door body 11.

[0059] On the other hand, in the process of the tension spring 67 rebounding and causing the door body 11 to close, since the person leaving the vehicle has stopped pulling the handle 2, the self-locking mechanism and the buffer mechanism are reset, that is, the air pump 45 stops introducing nitrogen into the piston cylinder 4, and the tension spring 67 drives the telescopic cylinder 5 to retract back to the fixed cylinder 51, and the telescopic cylinder 5 synchronously pulls the piston rod 41 to extend from the inside of the piston cylinder 4. At this time, the piston rod 41 compresses the nitrogen inside the piston cylinder 4 and makes it flow back into the air pump 45 along the exhaust pipe 42, thereby buffering and damping the rebound speed of the tension spring 67 through the compressed reflux of nitrogen, thereby reducing the closing speed of the door body 11.

[0060] Embodiment five:

[0061] This embodiment further illustrates the following based on the fourth embodiment:

[0062] The positioning mechanism includes a connecting rod 7 connected to the outer contour of the bottom end of the opening and closing shaft 53 through a damping friction transmission, and the connecting rod 7 is arranged inside the vehicle body 1. The bottom end of the connecting rod 7 is fixedly connected to a front fork 71 and a rear fork 72. The bottom ends of the front fork 71 and the rear fork 72 are penetrated by a guide plate 73, and the guide plate 73 is arranged inside the vehicle body 1. The upper surface of the guide plate 73 is provided with a rotation groove for guiding and limiting the front fork 71 and the rear fork 72. A partition plate 74 is arranged in the rotation groove on the upper surface of the guide plate 73 for guiding the front fork 71. An X key 76 is arranged between the two rotation grooves on the upper surface of the guide plate 73. The center of the X key 76 is penetrated and limitedly rotatably connected to a limiting shaft 75, and the limiting shaft 75 is fixedly connected to the inside of the vehicle body 1.

[0063] It can be seen from Example 4 that when a person leaves the vehicle, the door body 11 automatically closes under the rebound action of the tension spring 67. During this process, the positioning mechanism works synchronously, and when the door body 11 is opened to a set angle, an interlocking effect is achieved between the door body 11 and the positioning mechanism to keep the door body 11 in a normally open state.

[0064] The opening and closing shaft 53 is used as the axis during the opening and closing process of the door body 11. When the door body 11 is opened and closed, the opening and closing shaft 53 rotates synchronously. At this time, the connecting rod 7, the front fork 71 and the rear fork 72 rotate synchronously, while the guide plate 73, the limit shaft 75 and the X key 76 continue to remain stationary along with the vehicle body 1. The damping friction transmission relationship between the opening and closing shaft 53 and the connecting rod 7 can be achieved by adding a spring sheet, that is, the one-way transmission of the opening and closing shaft 53 to the connecting rod 7.

[0065] When the locking cam 76 is in the unlocking state, the locking cam 76 is in the unlocking state, and the locking cam 76 is in the unlocking state.

[0066] When it is necessary to release the normally open state of the door body 11 and close it, the door body 11 is pushed outward again. At this time, the rear fork 72 is in interlocking contact with the X key 76, and the front fork 71 moves the X key 76 to cause it to deflect again. Then, the pushing of the door body 11 is stopped, and the door body 11 is closed again under the rebound action of the tension spring 67. At this time, the rear fork 72 can be smoothly reset along the outer surface of the X key 76, that is, the door body 11 can be closed normally.

[0067] It should be noted that when it is necessary to adjust the normally open angle of the door body 11, it can be achieved by controlling the rotation angle between the initial position of the front fork 71 and the first deflection position of the front fork 71 when the X key 76 is toggled. This rotation angle is the opening angle of the door body 11. Since the position of the X key 76 is fixed by the limit shaft 75, the process of controlling the normally open angle of the door body 11 is achieved by adjusting the initial position of the front fork 71.

[0068] In one of the embodiments, the guide plate 73 is configured to be driven by a motor and the motor is controlled by the vehicle computer system. When the initial position of the front fork 71 needs to be adjusted, the motor controls the guide plate 73 to rotate. At this time, the partition plate 74 rotates synchronously and abuts against one side of the front fork 71. Subsequently, the front fork 71, the rear fork 72 and the connecting rod 7 rotate synchronously with the guide plate 73, while the opening and closing shaft 53 cannot rotate due to the locking relationship between the door body 11 and the vehicle body 1. At this time, the initial angle of the front fork 71 changes, and its rotation angle changes synchronously with the rotation of the opening and closing shaft 53 and the deflection of the X key 76, thereby realizing the adjustment function of controlling the normally open angle of the door body 11.

[0069] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-closing and driven automobile door lock, comprising a locking assembly arranged inside a door body (11) and an opening and closing assembly drivingly connected to the locking assembly, characterized in that: The inner surface of the door body (11) is provided with a locking groove (12) for the locking assembly to work, the locking assembly comprising a self-locking mechanism for completing the closing and locking of the door body (11) and a buffer mechanism for achieving damping and buffering during the opening and closing process of the door body (11), the self-locking mechanism being arranged inside the door body (11) and intermittently engaged with the vehicle body (1), and the buffer mechanism being arranged inside the door body (11) and drivingly connected to the self-locking mechanism; The opening and closing assembly comprises a suction mechanism for completing the automatic closing process of the door body (11) and a positioning mechanism for controlling the normally open angle limit of the door body (11), the suction mechanism being arranged at the connection between the vehicle body (1) and the door body (11) and being in transmission connection with the buffer mechanism, and the positioning mechanism being arranged inside the vehicle body (1) and being in transmission connection with the suction mechanism; The self-locking mechanism comprises a manually controlled handle (2), one end of the handle (2) located inside the door body (11) is penetrated by and fixedly connected to a fixed shaft (21), the top end of the fixed shaft (21) is fixedly connected to a torsion spring (22), and the top end of the torsion spring (22) is fixedly connected to the inside of the door body (11), the bottom end of the fixed shaft (21) is penetrated by and fixedly connected to a bevel gear 1 (23), one side of the upper surface of the bevel gear 1 (23) is meshed and transmission-connected with a bevel gear 2 (24), and the end of the bevel gear 2 (24) away from the bevel gear 1 (23) is fixedly connected to a threaded shaft (25). A threaded sleeve (26) is threadedly connected to the outer contour of the threaded shaft (25); a guide block (27) is fixedly connected to the outer contour of the threaded sleeve (26), and the guide block (27) is limitedly slidably connected to the inside of the door body (11); an end of the threaded sleeve (26) away from the threaded shaft (25) abuts against a lock tongue (28); an end of the lock tongue (28) away from the threaded sleeve (26) penetrates and is slidably connected to a fixed seat (29), and the fixed seat (29) is fixedly connected to the inner contour of the vehicle body (1); and a compression spring (210) is fixedly connected between the lock tongue (28) and the inner contour of the vehicle body (1).

2. A self-closing and driven automobile door lock according to claim 1, characterized in that: The buffer mechanism comprises a bevel gear three (3) meshed with and transmission-connected to a side of the upper surface of the bevel gear one (23) away from the bevel gear two (24); the end of the bevel gear three (3) away from the bevel gear one (23) is fixedly connected to a transmission wheel one (31); a rack (32) is meshed with and transmission-connected to the outer contour of the transmission wheel one (31); and the rack (32) is limitedly slidably connected to the inside of the door body (11); a limit pin (33) is fixedly connected to the outer contour of the rack (32) near the bottom end; the bottom end of the rack (32) is meshed with and transmission-connected to the transmission wheel two (34); a transmission ring (35) is fixedly connected to the inner contour of the transmission wheel two (34); and an air inlet hole (36) and an air outlet hole (37) are provided on the surface of the transmission ring (35).

3. A self-actuating automobile door lock according to claim 2, characterized in that: The buffer mechanism further comprises a piston cylinder (4) covering the outer surfaces of the air inlet hole (36) and the air outlet hole (37); the piston cylinder (4) is internally limited and slidably connected with a piston rod (41), and the piston rod (41) penetrates the transmission ring (35) and extends outward; an exhaust pipe (42), an air inlet pipe (43) and a compensation pipe (44) are penetrated and fixedly connected on the outer surface of the piston cylinder (4); the other ends of the exhaust pipe (42), the air inlet pipe (43) and the compensation pipe (44) are commonly connected with an air pump (45).

4. The self-actuating automobile door lock according to claim 3, characterized in that: The initial positions of the exhaust pipe (42) and the exhaust hole (37) correspond to each other, the initial positions of the intake pipe (43) and the intake hole (36) have a deflection angle and the deflection angle is set to forty-five degrees, and a pressing electrode is provided on the surface of the limit pin (33) and the pressing electrode controls the start and stop state of the air pump (45).

5. The self-actuating automobile door lock according to claim 1, characterized in that: The suction mechanism comprises a telescopic cylinder (5) fixedly connected to the outer contour of the piston rod (41); a fixed cylinder (51) is sleeved on the outer contour of the telescopic cylinder (5); a bracket 1 (52) is fixedly connected to the end of the fixed cylinder (51) away from the piston rod (41); an opening and closing shaft (53) is penetrated and fixedly connected to the end of the bracket 1 (52) away from the fixed cylinder (51); a bracket 2 (54) is penetrated and limitedly rotatably connected to the outer contour of the middle section of the opening and closing shaft (53); a bevel gear disc (55) is fixedly connected to the inner contour of the bracket 2 (54); the bevel gear disc (55) is penetrated and limitedly rotatably connected to the opening and closing shaft (53).

6. The self-actuating automobile door lock according to claim 5, characterized in that: The suction mechanism further comprises a positioning wheel (6) meshed with and transmission-connected to a side of the upper surface of the bevel gear disc (55) close to the fixed cylinder (51); an extension rod (61) is fixedly connected to one side of the positioning wheel (6), and the extension rod (61) passes through and is rotationally connected to the interior of the fixed cylinder (51); an end of the extension rod (61) away from the positioning wheel (6) is fixedly connected to a transmission rod (62); a spiral groove (63) for rotationally limiting the transmission rod (62) is provided on the outer contour of the telescopic cylinder (5); a fixing plate (66) is fixedly connected to the interior of the middle section of the telescopic cylinder (5); a tension spring (67) is fixedly connected between the fixing plate (66) and the bracket 1 (52), and the tension spring (67) is located inside the fixed cylinder (51); a guide rail (65) is fixedly connected to the inner contour of the fixed cylinder (51); and a guide groove (64) for slidingly limiting the guide rail (65) is provided on the outer contour of the telescopic cylinder (5).

7. The self-actuating automobile door lock according to claim 1, characterized in that: The positioning mechanism comprises a connecting rod (7) connected to the outer contour of the bottom end of the opening and closing shaft (53) through a damping friction transmission, and the connecting rod (7) is arranged inside the vehicle body (1); the bottom end of the connecting rod (7) is fixedly connected to a front fork (71) and a rear fork (72); the bottom ends of the front fork (71) and the rear fork (72) are penetrated and sleeved with a guide plate (73), and the guide plate (73) is arranged inside the vehicle body (1); the upper surface of the guide plate (73) is provided with a rotation groove for guiding and limiting the front fork (71) and the rear fork (72); a partition plate (74) is arranged in the rotation groove for guiding the front fork (71) on the upper surface of the guide plate (73); an X key (76) is arranged between the two rotation grooves on the upper surface of the guide plate (73); the center of the X key (76) is penetrated and limitedly rotatably connected to a limiting shaft (75), and the limiting shaft (75) is fixedly connected to the inside of the vehicle body (1).

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