A seat belt automatic fastening device

Abstract

This invention relates to an automatic seatbelt fastening device, comprising: a first pushing device, including a first telescopic device located on one side of the seat and a first fixed seat located on the first telescopic device; a second pushing device, including a second telescopic device located on the other side of the seat and a second fixed seat located on the second telescopic device; and an automatic buckle located on the other side of the seat for locking the latch and manually releasing the latch. The first telescopic device pushes the latch onto the second fixed seat via the first fixed seat, and the second telescopic device moves the latch above the automatic buckle via the second fixed seat, whereby the automatic buckle automatically inserts into the latch to secure it. This device, through two pushing devices and two fixed seats, enables the latch to move from one side of the seat to above the automatic buckle, and then the automatic buckle inserts into the latch, thus achieving automatic seatbelt fastening. When not in operation, it is in a retracted state, exhibiting a compact structure, small size, and high safety.

Description

Technical Field

[0001] This invention relates to a seat belt insertion device, and more particularly to an automatic seat belt buckle device. Background Technology

[0002] Seat belts are safety devices that secure occupants to their seats to prevent injury or ejection from the vehicle in the event of a collision. When used correctly and safely while the vehicle is in motion, they can effectively protect the lives of drivers and passengers in traffic accidents.

[0003] Most existing car seat belts require manual fastening, which is cumbersome and affects the user experience. Inserting the buckle requires manual searching, especially in dim lighting where passengers have to bend over or turn to find it. To solve these problems, automatic seat belt insertion devices have emerged, such as the fully automatic car seat belt disclosed in Chinese Patent CN106985785A. This device includes a retractor, a insert plate, a buckle, and webbing. Both ends of the webbing are fixed to the seat on the side away from the door, with one end fixed to the retractor. The retractor is installed on the side of the seat away from the door, and the buckle is installed on the side of the seat closer to the door. The seat belt also has a telescopic bar with webbing loops that allow the webbing to move freely through them. The length of the telescopic bar is controlled by a power source and can vary within a certain range. The insert plate is fixed to one end of the telescopic bar, and the other end is fixed to the car. Extending or retracting the telescopic bar towards the buckle inserts the insert plate into the buckle. Although this fully automatic car seat belt achieves automatic seat belt insertion, its use of a hydraulic cylinder for the telescopic rod results in a relatively complex overall structure and occupies a large amount of space. In actual use, it is quite inconvenient, affecting the movement space of the driver and passengers, and may even pose a safety hazard. Summary of the Invention

[0004] To address the aforementioned problems of complex structure, large space occupation, poor practicality, and safety hazards, this invention provides an automatic seatbelt fastening device, the specific technical solution of which is as follows: An automatic seatbelt buckle device includes: a first pushing device, comprising a first telescopic device disposed on one side of the seat and a first fixed seat disposed on the first telescopic device; a second pushing device, comprising a second telescopic device disposed on the other side of the seat and a second fixed seat disposed on the second telescopic device, the second fixed seat being disposed opposite to the first fixed seat; and an automatic buckle disposed on the other side of the seat for locking the latch and manually releasing the latch; wherein, the first telescopic device is used to push the latch onto the second fixed seat via the first fixed seat, the second telescopic device is used to move the latch above the automatic buckle via the second fixed seat, and the automatic buckle automatically inserts into the latch to fix the latch.

[0005] Preferably, the structure of the first telescopic device is the same as that of the second telescopic device. The first telescopic device includes: a telescopic seat with a telescopic groove and a guide groove communicating with the telescopic groove; a telescopic wheel rotatably disposed within the telescopic groove; a telescopic motor disposed on the telescopic seat and connected to the telescopic wheel; a telescopic steel belt movably disposed within the telescopic groove and the guide groove and wound around the telescopic wheel, with one end of the telescopic steel belt disposed on the telescopic wheel; and a telescopic track with both ends connected to the telescopic seat and the first fixed seat respectively, including a plurality of telescopic sleeves sequentially sleeved to realize telescopic extension and retraction along an arc; wherein, the telescopic steel belt is also movably disposed within the telescopic track, and the other end of the telescopic steel belt is connected to the other end of the telescopic track for pushing the telescopic track to extend and retract.

[0006] Furthermore, the telescopic steel belt is an arc-shaped steel belt.

[0007] Furthermore, the telescopic sleeve is provided with a steel strip groove, and the telescopic steel strip is inserted into the steel strip groove.

[0008] Preferably, the first fixing seat and the second fixing seat are respectively provided with a first fixing groove and a second fixing groove for locking the locking tongue.

[0009] Preferably, both the first fixing base and the second fixing base are provided with a first strong magnet and a second strong magnet for attracting the lock tongue to the first fixing base and the second fixing base, respectively, wherein the attraction force of the second strong magnet on the lock tongue is greater than the attraction force of the first strong magnet on the lock tongue.

[0010] Preferably, the automatic latch includes: a fixed plate disposed on one side of the seat; an outer shell disposed on the fixed plate; a sliding plate slidably disposed on the fixed plate; an inner shell disposed on the sliding plate and movably disposed inside the outer shell, the top of the inner shell having an insertion hole for inserting a latch; a locking device disposed inside the inner shell for locking the inserted latch; an unlocking device disposed on the inner shell and movably connected to the sliding plate for unlocking the locking device to release the latch; and a lifting device disposed on the outer shell and connected to the inner shell for pushing the inner shell up and down along the fixed plate, so that the inner shell is inserted into the latch and the locking device retracts after locking the latch.

[0011] Furthermore, the locking device includes: a locking block, movably inserted into the locking groove of the sliding plate; a locking spring, with both ends connected to the inner housing and the locking block respectively; and a locking shaft, disposed on the locking block and opposite to the sliding plate and the unlocking device, used to limit the extension position of the locking block and cooperate with the unlocking device to separate the locking block from the bolt; the unlocking device includes: an unlocking button, movably disposed in the unlocking groove of the inner housing and provided with an unlocking inclined surface opposite to the locking shaft; and an unlocking spring, with both ends connected to the unlocking button and the inner housing respectively; wherein, after the unlocking button is pressed down, the unlocking inclined surface pushes the locking shaft to separate the locking block from the bolt.

[0012] Furthermore, the automatic seatbelt buckle also includes a pop-out device, which is located inside the inner housing and below the locking device. The pop-out device is used to press against the inserted locking tongue to pop out the unlocked locking tongue.

[0013] Preferably, it further includes a take-up motor, which is mounted on the take-up unit.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an automatic seat belt buckle device that uses two pushing devices in conjunction with two fixed seats to move the locking tongue from one side of the seat to above the automatic buckle, and then the automatic buckle inserts into the locking tongue to realize the automatic buckling of the seat belt. Since the pushing device adopts a telescopic structure, it is in a retracted state when not in operation, which does not affect the activity space of the driver and passengers. The overall structure is compact, small in size, practical, and improves safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a schematic diagram showing the first pushing device in the retracted state and connected to the locking tongue; Figure 3 This is a schematic diagram of the first pushing device in the extended state; Figure 4 This is a cross-sectional view of the first pushing device in the extended state; Figure 5 This is an assembly diagram of the telescopic base, telescopic wheels, and telescopic motor; Figure 6 This is a schematic diagram of the first pushing device adsorbing the locking tongue and being in a retracted state; Figure 7 yes Figure 6 A sectional view; Figure 8 This is a structural schematic diagram of the first fixed base; Figure 9 This is a schematic diagram of the second fixed base; Figure 10 This is a structural diagram of the telescopic steel belt; Figure 11 This is a schematic diagram of the automatic latch structure; Figure 12 This is a cross-sectional view of the automatic latch; Figure 13 This is an exploded view of the automatic latch from the first perspective; Figure 14 This is an exploded view of the automatic latch from a second perspective; Figure 15 This is a schematic diagram showing the first and second pushing devices docking at the middle position of the seat; Figure 16 This is a schematic diagram of the retraction of the first and second pushing devices; Figure 17 This is a diagram illustrating the automatic latch rising and inserting into the bolt. Figure 18 This is a schematic diagram of the automatic latch reset. Detailed Implementation

[0016] The present invention will now be further described with reference to the accompanying drawings.

[0017] like Figures 1 to 18 As shown, an automatic seatbelt buckle device includes a first pushing device 10, a second pushing device 20, and an automatic buckle 7. The first pushing device 10 includes a first telescopic device and a first fixed seat 51. The first telescopic device is installed on one side of the seat, on the same side as the retractor 81, and the first fixed seat 51 is installed on the first telescopic device. The second pushing device 20 includes a second telescopic device and a second fixed seat 52. The second telescopic device and the automatic buckle 7 are both installed on the other side of the seat, and the second fixed seat 52 is installed on the second telescopic device. The second fixed seat 52 is opposite to the first fixed seat 51. The automatic buckle 7 is used to lock the latch 91 and manually release the latch 91. The first telescopic device is used to push the latch 91 onto the second fixed seat 52 through the first fixed seat 51, and the second telescopic device is used to move the latch 91 above the automatic buckle 7 through the second fixed seat 52. The automatic buckle 7 automatically inserts into the latch 91 to fix the latch 91.

[0018] When the seatbelt automatically fastens, the first pushing device 10 moves the locking tongue 91 to the center position of the seat via the first fixed seat 51. The second pushing device 20 starts synchronously with the first pushing device 10. The second fixed seat 52 and the first fixed seat 51 abut against each other at the center position of the seat, and the locking tongue 91 moves onto the second fixed seat 52. Then, the second telescopic device moves the second fixed seat 52 and the locking tongue 91 to continue moving towards the automatic buckle 7 until the locking tongue 91 moves above the automatic buckle 7. Then, the automatic buckle 7 automatically rises and automatically inserts into the locking tongue 91, thus fixing the locking tongue 91. After the locking tongue 91 is fixed, the automatic buckle 7 automatically descends to the side of the seat without protruding from the seat. When it is necessary to release the seatbelt, manually press the unlock button 751 on the automatic buckle 7. The automatic buckle 7 releases the locking tongue 91, and the seatbelt automatically retracts under the action of the retractor 81. The locking tongue 91 moves to the first fixed seat 51 and locks onto the first fixed seat 51.

[0019] like Figures 3 to 7 As shown, the structure of the first telescopic device is the same as that of the second telescopic device. The first telescopic device includes a telescopic base 1, a telescopic wheel 21, a telescopic motor 22, a telescopic steel belt 3, and a telescopic track 4. The telescopic base 1 has a telescopic groove 11 and a guide groove 12 inside, and the guide groove 12 communicates with the telescopic groove 11. The telescopic motor 22 is fixed on the telescopic base 1, and the motor shaft of the telescopic motor 22 is connected to the telescopic wheel 21 to drive the telescopic wheel 21 to rotate. The telescopic wheel 21 is movably located in the telescopic groove 11. One end of the telescopic steel belt 3 is fixed on the telescopic wheel 21 and wound around the telescopic wheel 21. The telescopic track 4 includes several telescopic sleeves 41 that are sequentially sleeved to realize telescopic extension and contraction along an arc. One end of the telescopic track 4 is fixed on the telescopic base 1 and is arranged opposite to the guide groove 12. The other end of the telescopic track 4 is connected to the first fixed seat 51, which is used to lock the locking tongue 91 so as to drive the locking tongue 91 to move. The telescopic steel belt 3 is also movably inserted into the telescopic track 4, and the other end of the telescopic steel belt 3 is connected to the other end of the telescopic track 4 to push the telescopic track 4 to extend and retract.

[0020] The cross-section of the telescopic sleeve 41 can be circular, elliptical, polygonal, etc. The telescopic sleeve 41 has a certain curvature and is generally arc-shaped. The diameter of the telescopic sleeves 41 that are successively sleeved decreases, and the adjacent telescopic sleeves 41 are clearance-fitted, allowing them to expand and contract freely.

[0021] When the telescopic motor 22 rotates forward, the telescopic wheel 21 releases the telescopic steel belt 3. Under the action of the guide groove 12, the telescopic steel belt 3 extends towards the telescopic track 4, thereby causing the telescopic sleeve 41 to extend. The first fixed seat 51 at the end of the telescopic track 4 causes the locking tongue 91 to move to the buckle, and the locking tongue 91 causes the seat belt to be automatically pulled out. When the arc-shaped telescopic track 4 extends, it can form a semi-circle in front of the seat, thereby moving the locking tongue 91 from one side of the seat to the other side and inserting the locking tongue 91 into the buckle on the other side of the seat.

[0022] The telescopic wheel 21, the telescopic motor 22, and the telescopic steel belt 3 form a retractor structure, which enables the extension and retraction of the telescopic steel belt 3, and drives the extension and retraction of the telescopic track 4 through the telescopic steel belt 3.

[0023] Because the telescopic steel belt 3 is wound around the telescopic wheel 21, it occupies little space, while the telescopic track 4 can extend and retract, so as not to occupy the space around the seat when not in use, and not to affect the movement of the driver and passengers. To prevent the steel strip from bending and to increase the ejection force, the telescopic steel strip 3 is an arc-shaped steel strip.

[0024] To further improve the stability of the telescopic steel belt 3 and ensure it remains oriented in a consistent direction without bending, the telescopic sleeve 41 is provided with a steel belt groove 48. The telescopic steel belt 3 is inserted into the steel belt groove 48. When the telescopic track 4 extends, each telescopic sleeve 41 can support the telescopic steel belt 3, thus ensuring that the telescopic steel belt 3 is not easily bent during the entire extension stroke and maintains high strength to guarantee reliable ejection force, allowing the telescopic track 4 to extend and retract smoothly. The steel belt groove 48 is located on a fixed baffle 49, which is positioned at the end of the telescopic sleeve 41. This not only facilitates the fixing of the telescopic steel belt 3 but also improves the strength of the telescopic sleeve 41.

[0025] The automatic seatbelt extension device also includes a bearing 23, which is installed inside the telescopic groove 11 and movably abuts against the telescopic steel belt 3. The bearing 23 can reduce the friction between the telescopic steel belt 3 and the side wall of the telescopic groove 11, so that the telescopic steel belt 3 can extend and retract smoothly. Among them, multiple bearings 23 are arranged in a circular array along the axis of the telescopic wheel 21.

[0026] like Figure 8 As shown, in order to facilitate the locking of the first fixing seat 51 into the locking tongue 91, the first fixing seat 51 is provided with a first fixing groove 511. The first fixing groove 511 matches the locking tongue 91 and can drive the locking tongue 91 to move.

[0027] To prevent the locking tongue 91 from falling off and to improve the reliability and stability of the locking tongue 91 being secured to the first fixed seat 51, a first strong magnet is provided on the first fixed seat 51. The first strong magnet is positioned opposite to the locking tongue 91 so that the locking tongue 91 is magnetically attracted to the first fixed seat 51, ensuring that the locking tongue 91 remains within the first fixed seat 51 and does not fall off when the automatic seat belt pusher moves the locking tongue 91.

[0028] like Figure 9 As shown, a second strong magnet is also provided on the second fixed seat 52. The attraction force of the second strong magnet on the latch 91 is greater than that of the first strong magnet on the latch 91, so that when the first fixed seat 51 and the second fixed seat 52 come into contact and separate, the latch 91 can move with the second fixed seat 52 and the latch 91 can separate from the first fixed seat 51, realizing the switching of the latch 91 on the first fixed seat 51 and the second fixed seat 52.

[0029] Compared to hydraulic drive, the telescopic steel belt 3, telescopic motor 22, and telescopic wheel 21 have a simpler structure and are easier to control, requiring no complex piping.

[0030] When retracted, the telescopic rail 4 is positioned to the side of the seat, without protruding from the seat or affecting the movement of the driver and passengers. It occupies little space, is easy to use, and is highly practical. Furthermore, its location on both sides of the seat effectively improves safety.

[0031] like Figures 11 to 14 As shown, the automatic latch 7 includes a fixing plate 73, a housing 71, a sliding plate 74, an inner housing 72, a locking device, an unlocking device, and a lifting device. One end of the fixing plate 73 is fixed to one side of the seat with screws, and the other end of the fixing plate 73 is provided with a guide groove 731. The sliding plate 74 is slidably inserted into the guide groove 731. The fixing plate 73 is also fixedly connected to the housing 71. The inner housing 72 is movably inserted inside the outer housing 71 and is fixedly connected to the sliding plate 74. The top of the inner housing 72 is provided with an insertion hole 723 and an unlocking hole 724. The insertion hole 723 matches the latch 91 and is used to insert into the latch 91. The locking device is installed inside the inner housing 72 and is arranged opposite to the sliding plate 74 to lock the inserted latch 91. The sliding plate 74 and the locking device are both located on the same side of the insertion hole 723. The unlocking hole 724 is located on one side of the insertion hole 723 and is used to install the unlocking device. The unlocking device is used to open the locking device to release the latch 91. The lifting device is installed inside the outer housing 71 and is also connected to the inner housing 72 to push the inner housing 72 up and down along the fixed plate 73 so that the inner housing 72 is inserted into the latch 91 and the locking device retracts after locking the latch 91.

[0032] By automatically extending the buckle, it automatically inserts into the locking tongue 91. That is, the locking tongue 91 remains stationary while the buckle moves up and down to achieve the insertion of the locking tongue 91 and the reset of the buckle. This solves the problem of the complex structure of the existing seat belt push device caused by the need to insert the locking tongue 91 into the buckle. This makes the structure of the automatic seat belt buckle device simple, eliminating the need to design an insertion device on the seat belt push device. This greatly simplifies the structure of the automatic seat belt buckle device, making it simpler, more practical, and reducing costs.

[0033] The other end of the fixed plate 73 is fixedly equipped with a guide sleeve 732, which forms a guide groove 731 with the fixed plate 73. The guide sleeve 732 makes the structure simple and easy to process.

[0034] The outer casing 71 includes a first outer casing 711 and a second outer casing 712, and the first outer casing 711 and the second outer casing 712 are fixed together by screws.

[0035] The inner housing 72 includes a first inner housing 721 and a second inner housing 722. The first inner housing 721 and the second inner housing 722 are fixed together by screws. The insertion hole 723 and the unlocking hole 724 are both located on the top of the second inner housing 722.

[0036] The lifting device includes a lead screw motor 781 and a lead screw nut 782. The lead screw motor 781 is fixed inside the outer casing 71 and connected to the first outer casing 711 of the outer casing 71. The lead screw nut 782 is movably mounted on the lead screw of the lead screw motor 781, and the lead screw nut 782 is also fixed to one side of the inner casing 72, specifically, the lead screw nut 782 is mounted on the first inner casing 721. The lead screw motor 781 drives the inner casing 72 to extend and retract along the length of the fixed plate 73 via the lead screw nut 782. Using a lead screw motor 781 simplifies the extension and retraction structure.

[0037] To improve the reliability and stability of the retraction of the inner housing 72, the lifting device also includes a retraction spring 783. The retraction spring 783 is located inside the outer housing 71. One end of the retraction spring 783 is fixed to the bottom of the inner housing 72, and the other end of the retraction spring 783 is fixed to the outer housing 71. The other end of the retraction spring 783 can also be fixed to the fixing plate 73. Since the fixing plate 73 is a steel plate, the other end of the retraction spring 783 is fixed to the fixing plate 73 to ensure reliability and service life.

[0038] The locking device includes a locking block 761, a locking spring 763, and a locking shaft 762. The locking block 761 matches the lock hole on the latch 91 and is inserted into the lock hole to fix the latch 91. The locking block 761 is movably inserted into the locking groove 741, which is provided on the sliding plate 74 and has a clearance fit with the locking block 761, allowing the locking block 761 to move freely in a direction perpendicular to the sliding plate 74. One end of the locking spring 763 abuts against the second inner shell 722 of the inner shell 72, and the other end of the locking spring 763 abuts against one end of the locking block 761. The locking shaft 762 is fixed on the locking block 761 and is symmetrically arranged around the center of the locking block 761. The locking shaft 762 is arranged opposite to the sliding plate 74 and the unlocking device, and is used to limit the extension position of the locking block 761 and cooperate with the unlocking device to separate the locking block 761 from the latch 91.

[0039] To facilitate the insertion of the latch 91, the locking block 761 and the end opposite to the latch 91 when they are inserted are provided with a pushing arc surface 7611. The pushing arc surface 7611 can push the locking block 761 to retract to one side of the sliding plate 74, so that the latch 91 can be smoothly inserted into the insertion hole 723, and the lock hole of the latch 91 can be smoothly lowered to be opposite to the locking block 761, so that the locking block 761 can be inserted into the lock hole.

[0040] The unlocking device includes an unlocking button 751 and an unlocking spring 752. The unlocking button 751 is movably inserted into the unlocking hole 724 at the top of the second inner shell 722. The unlocking button 751 has two unlocking ramps 7511, both of which are opposite to the locking shaft 762 and located on either side of the locking block 761. One end of the unlocking spring 752 abuts against the second inner shell 722, and the other end abuts against the unlocking button 751, keeping the unlocking button 751 pressed against the top of the unlocking hole 724. The unlocking button 751 also slides against the sliding plate 74. After the unlocking button 751 is pressed down, the unlocking ramp 7511 pushes the locking shaft 762 to separate the locking block 761 from the latch 91. The unlocking ramp 7511, through the locking shaft 762, pushes the locking block 761 away from the latch 91 until the locking block 761 separates from the lock hole. An L-shaped positioning groove is provided on one side of the unlocking hole 724, and an L-shaped positioning protrusion is provided on one side of the unlocking button 751. The positioning protrusion is positioned opposite to the positioning groove to limit the position of the unlocking button 751 and prevent the unlocking button 751 from dislodging from the unlocking hole 724.

[0041] To achieve automatic ejection of the locking tongue 91, i.e., automatic withdrawal of the locking tongue 91, the automatic seatbelt buckle also includes an ejection device. The ejection device is located within the inner housing 72, below the locking device, and is used to abut against the inserted locking tongue 91 to eject the unlocked locking tongue 91. Specifically, the ejection device includes an ejection block 771 and an ejection spring 772. The ejection block 771 is slidably mounted within the inner housing 72, below the locking block 761. One end of the ejection spring 772 abuts against the ejection block 771, and the other end abuts against the second inner housing 722, giving the ejection block 771 a certain upward ejection force. Two ejection springs 772 are symmetrically arranged, making the up-and-down sliding of the ejection block 771 more stable. To facilitate the up-and-down movement of the ejection block 771, the inner housing 72 is provided with an ejection groove 7211. The ejection block 771 slides into the ejection groove 7211, allowing the ejection block 771 to move along the direction of the sliding plate 74. When the latch 91 is inserted into the socket 723, the pop-out block 771 presses against the bottom of the latch 91 under the action of the pop-out spring 772. When the locking block 761 separates from the lock hole, the pop-out block 771 pushes the latch 91 out of the socket 723 under the action of the pop-out spring 772, realizing the automatic pop-out of the latch 91.

[0042] To prevent the locking tongue 91 from failing to enter the first fixing slot 511 of the first fixing seat 51 due to the seat belt not being fully retracted, a winding motor 82 is also included. The winding motor 82 is mounted on the retractor 81 and is installed on the vehicle frame to drive the retractor 81 to automatically wind up. The winding motor 82 can rotate in opposite directions when the first pushing device 10 and the second pushing device 20 are fastening, overcoming the force of the spring inside the retractor 81, so that the first pushing device 10 and the second pushing device 20 can push the locking tongue 91 with less effort and effectively reduce resistance.

[0043] like Figures 15 to 18As shown, the seat is typically equipped with sensors to detect the presence of occupants. When an occupant is detected and a buckle command is received, the automatic seatbelt buckle device is activated. The first pushing device 10 moves the latch 91 to the center position of the seat via the first fixing seat 51. The second pushing device 20 is activated synchronously with the first pushing device 10. The second fixing seat 52 and the first fixing seat 51 abut against each other at the center position of the seat, and then separate. Because the attraction force of the second strong magnet on the latch 91 is greater than that of the first strong magnet on the latch 91, when the first fixing seat 51 and the second fixing seat 52 separate, the latch 91 moves with the second fixing seat 52. Then the second telescopic device... The second fixed seat 52 and the locking tongue 91 continue to move towards the automatic latch 7 until the locking tongue 91 moves above the automatic latch 7. Under the action of the lifting device, the outer shell 71 remains stationary, and the inner shell 72 moves upward. The insertion hole 723 automatically inserts into the locking tongue 91. As the inner shell 72 rises, the locking tongue 91 abuts against the locking block 761. By pushing the arc surface 7611, the locking block 761 can be pushed to retract to one side of the sliding plate 74. The inner shell 72 continues to rise until the locking block 761 is inserted into the lock hole of the locking tongue 91, completing the locking of the locking tongue 91. Then, under the action of the lifting device, the inner shell 72 retracts to the side of the seat, and the inner shell 72 does not protrude from the seat.

[0044] When the bottom of the latch 91 touches the top of the pop-out block 771, the pop-out block 771 moves downward.

[0045] When unlocking, manually press the unlock button 751. The unlock button 751 moves downward, and the unlocking ramp 7511 pushes the locking shaft 762 to move away from the sliding plate 74. The locking shaft 762 drives the locking block 761 to move away from the sliding plate 74 until the locking block 761 separates from the lock hole. The pop-out spring 772 pushes the latch 91 away from the socket 723 through the pop-out block 771. The seat belt is reset under the action of the retractor 81.

[0046] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the claims of the present invention.

Claims

1. An automatic seatbelt buckle device, characterized in that, include: The first pushing device (10) includes a first telescopic device disposed on one side of the seat and a first fixed seat (51) disposed on the first telescopic device. The second pushing device (20) includes a second telescopic device disposed on the other side of the seat and a second fixed seat (52) disposed on the second telescopic device, the second fixed seat (52) being disposed opposite to the first fixed seat (51); and An automatic latch (7) is located on the other side of the seat for locking the latch (91) and manually releasing the latch (91). Wherein, the first telescopic device is used to push the latch (91) onto the second fixed seat (52) through the first fixed seat (51), and the second telescopic device is used to drive the latch (91) to move above the automatic buckle (7) through the second fixed seat (52), and the automatic buckle (7) automatically inserts into the latch (91) to fix the latch (91); The automatic latch (7) includes: A fixing plate (73) is provided on one side of the seat; The outer casing (71) is disposed on the fixing plate (73); A sliding plate (74) is slidably disposed on the fixed plate (73); The inner housing (72) is disposed on the sliding plate (74) and is movably disposed inside the outer housing (71). The top of the inner housing (72) is provided with a socket (723) for inserting the lock tongue (91). A locking device is provided inside the inner housing (72) for locking the inserted latch (91). An unlocking device is provided on the inner housing (72) and is movably connected to the sliding plate (74) for opening the locking device to release the locking tongue (91). A lifting device is provided on the outer shell (71) and connected to the inner shell (72) for pushing the inner shell (72) up and down along the fixed plate (73) so that the inner shell (72) extends out and inserts into the latch (91) and the locking device locks the latch (91) and then retracts. The locking device includes: The locking block (761) is movably inserted into the locking groove (741) of the sliding plate (74); A locking spring (763) has its two ends connected to the inner housing (72) and the locking block (761), respectively; and A locking shaft (762) is provided on the locking block (761) and is disposed opposite to the sliding plate (74) and the unlocking device. It is used to limit the extension position of the locking block (761) and cooperate with the unlocking device to separate the locking block (761) from the locking tongue (91). The unlocking device includes: The unlock button (751) is movably disposed in the unlock hole (724) of the inner housing (72) and is provided with an unlocking inclined surface (7511) opposite to the locking shaft (762). The unlocking spring (752) is connected at both ends to the unlocking button (751) and the inner housing (72), respectively; When the unlock button (751) is pressed down, the unlocking ramp (7511) pushes the locking shaft (762) to separate the locking block (761) from the locking tongue (91).

2. The automatic seatbelt buckle device according to claim 1, characterized in that, The structure of the first telescopic device is the same as that of the second telescopic device, and the first telescopic device includes: The telescopic seat (1) is provided with a telescopic groove (11) and a guide groove (12) communicating with the telescopic groove (11). Telescopic wheel (21) is rotatably disposed within the telescopic groove (11); A telescopic motor (22) is mounted on the telescopic seat (1) and connected to the telescopic wheel (21); A telescopic steel belt (3) is movably disposed within the telescopic groove (11) and the guide groove (12), and is wound around the telescopic wheel (21), with one end of the telescopic steel belt (3) disposed on the telescopic wheel (21); and The telescopic track (4) is connected at both ends to the telescopic seat (1) and the first fixed seat (51) respectively, and includes a plurality of telescopic sleeves (41) that are sequentially sleeved to achieve telescopic extension and retraction along the arc. The telescopic steel belt (3) is also movably disposed within the telescopic track (4), and the other end of the telescopic steel belt (3) is connected to the other end of the telescopic track (4) to push the telescopic track (4) to extend and retract.

3. The automatic seatbelt buckle device according to claim 2, characterized in that, The telescopic steel strip (3) is an arc-shaped steel strip.

4. The automatic seatbelt buckle device according to claim 2, characterized in that, The telescopic sleeve (41) is provided with a steel strip groove (48), and the telescopic steel strip (3) is inserted into the steel strip groove (48).

5. The automatic seatbelt buckle device according to claim 1, characterized in that, The first fixing seat (51) and the second fixing seat (52) are respectively provided with a first fixing slot (511) and a second fixing slot (521) for locking the locking tongue (91).

6. A seatbelt automatic buckle device according to claim 1 or 5, characterized in that, Both the first fixing seat (51) and the second fixing seat (52) are provided with a first strong magnet and a second strong magnet for attracting the latch (91) onto the first fixing seat (51) and the second fixing seat (52). The attraction force of the second strong magnet on the latch (91) is greater than that of the first strong magnet on the latch (91).

7. The automatic seatbelt buckle device according to claim 1, characterized in that, The automatic latch (7) further includes: a pop-out device, which is located inside the inner housing (72) and below the locking device. The pop-out device is used to press against the inserted latch (91) to pop out the unlocked latch (91).

8. The automatic seatbelt buckle device according to claim 1, characterized in that, Also includes: A take-up motor (82) is mounted on a take-up unit (81).

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