Automotive closeable seat belt buckle

Abstract

The utility model discloses a kind of closed safety belt lock catch of car, which belongs to the field of safety belt.It mainly includes shell, fastening mechanism, locking mechanism, rebound pressing piece, socket, sealing plate, support plate, first magnetic body, second magnetic body, shell one end is penetrated, and the part opposite with penetration site is equipped with fastening mechanism, and inside is equipped with the locking mechanism matched with safety belt insert piece, the part of shell close to penetration site is equipped with rebound pressing piece, socket is penetrated in rebound pressing piece for the safety belt insert piece is inserted into shell, rebound pressing piece is hinged with sealing plate, sealing plate is fixed with support plate, support plate is more close to fastening mechanism compared with sealing plate, support plate is provided with first magnetic body, and rebound pressing piece is provided with second magnetic body.The utility model is equipped with first magnetic body and second magnetic body, not only makes sealing plate timely shield socket, simultaneously, it is convenient to install sealing plate and support plate, and it is convenient to understand and repair.

Description

Technical Field

[0001] This utility model belongs to the field of seat belts, and more specifically, it relates to a lockable seat belt buckle for automobiles. Background Technology

[0002] The combination of seatbelt buckle, seatbelt insert, and seatbelt is a crucial safety device for drivers and passengers while riding in a car. The seatbelt buckle is responsible for the controlled locking and unlocking of the seatbelt insert, playing a vital role in ensuring occupant safety. However, the seatbelt buckle has a slot for inserting the seatbelt insert, which is usually an open design. When not in use, this slot can easily allow foreign objects to enter, making it difficult to insert the seatbelt insert and thus affecting its usability.

[0003] Chinese utility model patent with publication number "CN221729893U" provides a vehicle seat belt buckle with a protective structure. By setting a baffle and a reset component, the reset component provides support for the baffle, so that the baffle can stably block the plug, reducing the possibility of external impurities entering the housing and affecting the normal use of the locking component, thereby improving the safety of the buckle during use.

[0004] However, it has the following shortcomings: First, the reset component uses a torsion spring. Although this allows the baffle to reset quickly, when replacing the baffle, the direction of the torsion spring's elastic force is approximately perpendicular to the direction the baffle needs to move, which can easily cause the baffle to deviate, making replacement inconvenient. Second, using a torsion spring as the reset component is prone to damage. Because the seat belt needs to compress the baffle for a long time during use, and the seat belt is used frequently, the torsion spring is prone to fatigue and loosening due to prolonged and frequent operation, resulting in insufficient elastic force. Consequently, the baffle does not adequately cover the buckle, thus reducing its effectiveness in preventing foreign objects from entering. Third, its internal structure is complex and unclear, making it difficult to understand its working principle. This makes it difficult for non-professional maintenance personnel to repair, and ordinary maintenance personnel tend to replace the entire unit directly, which is not only unfavorable for promotion but also increases costs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a car encloseable seat belt buckle. Through the magnetic attraction of the first and second magnetic attractors, it can not only make the sealing plate cover the plug in time, but also facilitate the installation of the sealing plate and the support plate. The overall structure is simple and clear, easy to understand and maintain.

[0006] A retractable seatbelt buckle for automobiles includes a housing, a fastening mechanism, a locking mechanism, a spring-loaded pressing component, a connector, a sealing plate, a support plate, a first magnetic attractor, and a second magnetic attractor. One end of the housing is penetrated, and a fastening mechanism is installed at a position opposite the penetration point. The locking mechanism, which cooperates with the seatbelt insert, is installed inside the housing. The fastening mechanism is used to fasten to the external environment. A spring-loaded pressing component is installed near the penetration point of the housing. This component cooperates with the locking mechanism. When the seatbelt insert is inserted, the locking mechanism can promptly lock with it. Under external pressure, the spring-loaded pressing component can move inwards into the housing, driving the locking mechanism to release the lock on the seatbelt insert. The spring-loaded pressing component, under the action of elastic force... The spring-loaded pressing component has a tendency to spring back outward from the housing. It has a through-hole for inserting the seat belt insert into the housing. The spring-loaded pressing component is hinged to a sealing plate. The sealing plate can swing along its virtual hinge axis to a certain angle to block the through-hole. The sealing plate is fixed to a support plate. The support plate is closer to the fastening mechanism than the sealing plate. The support plate is provided with a first magnetic attractor. The spring-loaded pressing component is provided with a second magnetic attractor. At least one of the first and second magnetic attractors is a permanent magnet and both can be attracted by magnetism. The first and second magnetic attractors tend to move closer to each other under the action of magnetic attraction. Under the action of magnetic attraction, the first and second magnetic attractors enable the sealing plate to swing with the support plate to block the through-hole.

[0007] Preferably, the rebound pressing component includes a guide seat, a pressing plate, a support seat, a protrusion, and a compression spring. A guide seat that slides linearly within the housing is provided, with the sliding direction of the guide seat being the same as the insertion / removal direction of the seatbelt insert. A pressing plate is fixed to the end of the guide seat near the housing penetration point, blocking the penetration point. The insertion port passes through the pressing plate. A pair of support seats are slidably connected to the guide seat, with the sliding direction of the support seats being the same as the axial direction of the virtual hinge axis of the sealing plate. The two support seats are arranged opposite each other, and adjacent ends are respectively fixed with hemispherical and smooth protrusions. The virtual straight line where the virtual centers of the two protrusions lie is the same as the sliding direction of the support seats. Each support seat is fixed with a compression spring. Under the elastic repulsive force of the compression spring, the two support seats tend to move closer to each other. The sealing plate is provided with two grooves corresponding to the protrusions. The two protrusions are inserted into the two grooves. The sealing plate achieves a hinge connection compared to the spring-loaded pressing part by using the insertion of the grooves and protrusions. Under the action of external force, the two support seats can slide away from each other, so that the protrusions and grooves are completely separated. The end face of the sealing plate near the insertion port is provided with a buckle or buckle groove. The extension direction of the buckle or buckle groove is perpendicular to the sliding direction of the support seat. When the protrusions and grooves are fully inserted, the support seats can fit against the sealing plate. When the support seats and the sealing plate fit against each other, they jointly block the insertion port.

[0008] Preferably, a guide housing is fixed to the end of the guide seat near the pressing plate. The length L1 of the radial end of the support plate away from the virtual axis to the virtual hinge axis of the sealing plate is greater than the length L2 of the radial end of the sealing plate away from the virtual axis to its virtual hinge axis. When the groove and the protrusion are inserted, the radial end of the support plate away from the virtual hinge axis of the sealing plate is in contact with the guide housing. When the sealing plate swings along its virtual hinge axis, the radial end of the support plate away from the virtual hinge axis of the sealing plate is always in contact with the guide housing. The second magnetic body is installed with the guide housing.

[0009] Preferably, the guide housing is fixed with a limiting strip, and the support plate is provided with a receiving groove. When the sealing plate is away from the insertion port, the limiting strip is away from the receiving groove and disengages. When the sealing plate is close to the insertion port, the limiting strip is close to the receiving groove. When the sealing plate and the support base jointly block the insertion port, the limiting strip and the receiving groove are interlocked. The length of the receiving groove is greater than the length of the limiting strip, and the difference between the two lengths is greater than the diameter of the protruding virtual ball. When the limiting strip and the receiving groove are interlocked, the limiting strip is allowed to move along the receiving groove.

[0010] Preferably, the first magnetic accumulator is inserted into the support plate, and the second magnetic accumulator is inserted into the guide housing. The support plate and the guide housing are respectively threaded with detachable tightening bolts. The tightening bolts on the support plate tighten the first magnetic accumulator so that the first magnetic accumulator is in close contact with the support plate, and the tightening bolts on the guide housing tighten the second magnetic accumulator so that the second magnetic accumulator is in close contact with the guide housing.

[0011] Preferably, the fastening mechanism includes a lower slot, a mounting plate, an upper slot, a receiving housing, and a support rod. The lower slot passes through one end of the housing, and the lower slot is positioned opposite to the through portion of the housing. A detachable mounting plate is fastened to the end of the housing near the lower slot. The upper slot passes through the mounting plate, and the upper slot is connected to the lower slot. Two receiving housings are fixed to the mounting plate. The receiving housings are connected to the upper slot and are positioned opposite to each other. A support rod is inserted into the two receiving housings through a common gap. The diameter of the support rod is larger than that of the lower slot and smaller than that of the upper slot. The support rod can be disengaged from the upper slot along the guide housing. The axial direction of the support rod is the same as the length direction of the lower slot.

[0012] Preferably, the fastening mechanism includes a lower slot, a mounting plate, a connecting plate, and a mounting hole. The lower slot extends through one end of the housing, and the slot and the through portion of the housing are arranged opposite to each other. A detachable mounting plate is fastened to the end of the housing near the slot. The mounting plate is fixed with a connecting plate. The connecting plate is interlocked with the lower slot and extends outward from the housing. The part of the connecting plate extending out of the housing has a mounting hole.

[0013] Preferably, the rebound pressing component further includes a smooth rod, a second compression spring, a limiting groove, and a limiting bolt. The smooth rod is fixed to the mounting plate, and the smooth rod is slidably connected to the guide seat. The sliding direction of the smooth rod and the guide seat is the same as the insertion direction of the seat belt insert. The smooth rod achieves linear sliding relative to the housing through the sliding connection with the guide seat. A second compression spring is placed between the guide seat and the smooth rod. The second compression spring is interlocked outside the smooth rod. One end of the axial end of the second compression spring abuts against the mounting plate, and the other end of the axial end of the second compression spring abuts against the guide seat. Under the elastic repulsive force of the second compression spring, the guide seat tends to move towards the penetration point of the housing, thus achieving rebound. The guide seat penetrates through the limiting groove, and the length direction of the limiting groove is the same as the insertion direction of the seat belt insert. The housing is threaded with a detachable limiting bolt, which is interlocked with the limiting groove. When the guide seat slides along the smooth rod, the limiting bolt moves relative to the guide seat along the length direction of the limiting groove.

[0014] Preferably, the locking mechanism includes a guide platform, a guard plate, a locking port, a sliding seat, a locking tongue, a tension spring, a guide plate, a guide chamfer, a guide angle, a limiting platform, a first wedge block, and a second wedge block. A downwardly inclined guide platform is fixed to the inner wall of the housing near the insertion port. The guide platform is narrower near the insertion port and wider away from it. Two guard plates are fixed to the guide platform, positioned opposite each other on both sides of the guide platform and corresponding to the two ends of the insertion port along its length. The guide platform corresponds to the insertion port. A locking port is provided on the inner wall of the housing, and the locking port and the guide platform are located on the same inner wall of the housing. A sliding seat that slides along a straight line is provided inside the housing. A locking tongue is fixed to the sliding seat and can be inserted into the locking port. The locking tongue matches the penetration point of the seat belt insert. The sliding seat and the inner wall of the housing... A tension spring is fixed between the walls. Under the elastic tension of the tension spring, the sliding seat tends to move closer to the lock. The sliding direction of the sliding seat is perpendicular to the insertion and removal direction of the seat belt insert. A guide plate is fixed at the end of the latch near the insertion port, and a guide chamfer is provided at the end near the insertion port and the lock. The guide chamfer and the guide plate transition into each other. The guide plate and the guide platform together form a guide angle to guide the seat belt insert. A limiting platform is fixed on the inner wall of the housing. The limiting platform is located between the guide platform and the lower slot. The limiting platform is used to limit the contact of the seat belt insert. A first wedge block is fixed on the guide seat, and a second wedge block is fixed on the sliding seat. When the guide seat moves toward the lower slot, the first wedge block can squeeze and push the second wedge block to move the sliding seat and the latch away from the lock.

[0015] Preferably, the housing includes a front half-housing, a rear half-housing, mounting strips, mounting slots, lower mounting bolts, and upper mounting bolts. The front half-housing can fit into contact with the rear half-housing. A mounting strip is fixed along the edge of the end of the front half-housing that fits into the rear half-housing, and a mounting slot is fixed along the edge of the end of the rear half-housing that fits into the front half-housing. The mounting strip and the mounting slot are matched and inserted into each other. Two sets of lower mounting bolts are inserted through the gap in the mounting plate. Multiple lower mounting bolts form a group, and the axial direction of each lower mounting bolt is the same as the insertion and removal direction of the seat belt insert. One set of mounting bolts is threaded to the rear half of the housing, and the other set is threaded to the front half of the housing. An upper mounting bolt is inserted through the gap in the front half of the housing. The axial direction of the upper mounting bolt is perpendicular to the insertion and removal direction of the insert. The upper mounting bolt is slidably connected to the sliding seat and can be disengaged. The sliding seat achieves linear sliding relative to the housing by utilizing the sliding connection with the upper mounting bolt. The upper mounting bolt is threaded to the rear half of the housing. The tension spring is inserted through the gap outside the upper mounting bolt. The end face of the pressing plate facing the insertion direction of the seat belt insert is provided with a mark for identifying the pressing direction.

[0016] Compared with the prior art, the beneficial effects of this utility model are: 1. When the insert is inserted into the socket, it pushes the sealing plate downward, causing the first and second magnetic clasps to move away from each other. When the insert is detached from the socket, the first magnetic clasp moves towards the second magnetic clasp under the action of magnetic attraction, causing the sealing plate to move closer to the socket, thus achieving the sealing plate's blocking effect on the socket and reducing the entry of foreign objects. The magnetic attraction of the first and second magnetic clasps makes them less prone to damage, thus ensuring the sealing plate's blocking effect on the socket. If damaged, the tightening bolt can be removed to easily replace the first and second magnetic clasps.

[0017] 2. By manually moving the latch or latching bar left and right, the sealing plate and support plate can be pushed away from the protrusion on the other side, thus disengaging the groove from the protrusion. Then, tilting and dragging upwards will disengage the protrusion from the groove on that side, allowing the support plate and sealing plate to be removed. Then, insert the new sealing plate along with the support plate into the socket. During this process, the two protrusions will be squeezed until they are properly inserted into the corresponding grooves. This makes it easy to replace the sealing plate and support plate. The magnetic attraction of the first and second magnetic accumulators facilitates the installation of the sealing plate and support plate. The support plate and sealing plate together block the socket, further reducing the entry of foreign objects.

[0018] 3. The fastening structure, locking mechanism, and spring-loaded pressing component are clearly defined, simple in construction, easy to disassemble and replace, and easy to understand their working principle. This makes it easier for ordinary maintenance personnel to carry out maintenance, reduces costs, and facilitates promotion. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is a schematic diagram showing the fit between the two fastening mechanisms and the housing; Figure 3 A schematic diagram showing the fit between the sliding seat, tension spring, and mounting bolts; Figure 4 This is a schematic diagram of the bottom structure of the sealing plate and support plate; Figure 5 This is a schematic diagram showing the fit between the support seat and the guide seat; Figure 6 This is a schematic diagram of the right cross-section of the present invention; Figure 7 A schematic diagram showing the fit between the mounting plate, guide seat, and front half of the housing; In the diagram: 1. Housing; 2. Fastening mechanism; 3. Locking mechanism; 4. Spring-loaded pressing element; 5. Insert; 6. Sealing plate; 7. Support plate; 8. Magnetic suction body No. 1; 9. Magnetic suction body No. 2; 10. Guide seat; 11. Pressing plate; 12. Support seat; 13. Protrusion; 14. Compression spring No. 1; 15. Groove; 16. Fastening strip; 17. Guide housing; 18. Limiting strip; 19. Receiving groove; 20. Tightening bolt; 21. Lower slot; 22. Mounting plate; 23. Upper slot; 24. Receiving housing; 25. Support rod; 26. Connection. 27. Plate; 28. Mounting hole; 29. ​​Smooth rod; 30. No. 2 compression spring; 31. Limiting groove; 32. Limiting bolt; 33. Guide platform; 34. Protective plate; 35. Locking hole; 36. Sliding seat; 37. Locking tongue; 38. Tension spring; 39. Guide plate; 40. Guide chamfer; 41. Guide angle; 42. Limiting platform; 43. Front half shell; 44. Rear half shell; 45. Mounting strip; 46. Mounting slot; 47. Lower mounting bolt; 48. Upper mounting bolt; 49. Marker; 50. No. 1 wedge block; 51. No. 2 wedge block. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings: The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, a car seatbelt buckle that can be closed includes a housing 1, a fastening mechanism 2, a locking mechanism 3, a spring-loaded pressing member 4, an insertion port 5, a sealing plate 6, a support plate 7, a first magnetic 8, and a second magnetic 9. One end of the housing 1 is penetrated, and the fastening mechanism 2 is installed at the position opposite to the penetration point. The locking mechanism 3, which cooperates with the seatbelt insert, is installed inside the housing 1. The fastening mechanism 2 is used to fasten to the outside. A spring-loaded pressing member 4 is installed near the penetration point of the housing 1. The spring-loaded pressing member 4 cooperates with the locking mechanism 3. After the seatbelt insert is inserted, the locking mechanism 3 can lock with the seatbelt insert in a timely manner. Under external pressure, the spring-loaded pressing member 4 can move into the housing 1, driving the locking mechanism 3 to release the lock on the seatbelt insert. The spring-loaded pressing member 4, under elastic force... Under the action, it tends to spring outward from the housing 1. The spring-loaded pressing part 4 has a through-hole 5 for the seat belt insert to be inserted into the housing 1. The spring-loaded pressing part 4 is hinged to a sealing plate 6. The sealing plate 6 can swing along its virtual hinge axis to a certain angle to block the through-hole 5. The sealing plate 6 is fixed to a support plate 7. The support plate 7 is closer to the fastening mechanism 2 than the sealing plate 6. The support plate 7 is provided with a first magnetic attractor 8, and the spring-loaded pressing part 4 is provided with a second magnetic attractor 9. At least one of the first magnetic attractor 8 and the second magnetic attractor 9 is a permanent magnet and both can be attracted by magnetism. The first magnetic attractor 8 and the second magnetic attractor 9 tend to move closer to each other under the action of magnetic attraction. Under the action of magnetic attraction, the first magnetic attractor 8 and the second magnetic attractor 9 make the sealing plate 6 swing with the support plate 7 to block the through-hole 5.

[0022] In use, the seat belt insert is inserted into the housing 1 through the slot 5 to lock with the locking mechanism 3. When it is necessary to release the lock, the locking mechanism 3 is activated by pressing the spring-loaded pressing piece 4, thereby releasing the lock with the seat belt insert (hereinafter referred to as the insert). When the insert is inserted into the slot 5, it pushes the sealing plate 6 downward, thereby moving the first magnetic 8 and the second magnetic 9 away from each other. When the insert is detached from the slot 5, under the action of magnetic attraction, the first magnetic 8 moves closer to the second magnetic 9, causing the sealing plate 6 to move closer to the slot 5, thereby blocking the slot 5 with the sealing plate 6 and reducing the entry of foreign objects.

[0023] like Figure 4 and Figure 5As shown, the rebound pressing component 4 includes a guide seat 10, a pressing plate 11, a support seat 12, a protrusion 13, and a compression spring 14. A guide seat 10 is installed inside the housing 1, sliding in a straight line. The sliding direction of the guide seat 10 is the same as the insertion / removal direction of the seat belt insert. A pressing plate 11 is fixed to the end of the guide seat 10 near the penetration point of the housing 1, blocking the penetration point. The insertion port 5 passes through the pressing plate 11. A pair of support seats 12 are slidably connected to the guide seat 10. The sliding direction of the support seats 12 is the same as the axial direction of the virtual hinge axis of the sealing plate 6. The two support seats 12 are arranged opposite each other, and adjacent ends are respectively fixed with hemispherical and smooth protrusions 13. The virtual straight line where the virtual centers of the two protrusions 13 are located is the same as the sliding direction of the support seats 12. The two support seats 12 are respectively connected to the guide seat 10. Two compression springs 14 are fixed together. Under the elastic repulsive force of the compression springs 14, the two support seats 12 tend to move closer to each other. The sealing plate 6 is provided with two grooves 15 corresponding to the protrusions 13. The two protrusions 13 are inserted into the two grooves 15. The sealing plate 6 achieves a hinge connection with the spring-loaded pressing part 4 by using the insertion of the grooves 15 and the protrusions 13. Under the action of external force, the two support seats 12 can slide away from each other, so that the protrusions 13 and the grooves 15 are completely separated. The end face of the sealing plate 6 near the insertion port 5 is provided with a buckle 16 or buckle groove (not shown in the figure). The extension direction of the buckle 16 or buckle groove is perpendicular to the sliding direction of the support seat 12. When the protrusions 13 and the grooves 15 are fully inserted, the support seat 12 can fit against the sealing plate 6. When the support seat 12 and the sealing plate 6 fit against each other, they jointly block the insertion port 5.

[0024] Furthermore, by manually moving the latch or latch strip 16 left and right, the sealing plate 6 and the support plate 7 can be pushed away from the protrusion 13 on the other side, thereby disengaging the groove 15 from the protrusion 13. Then, by tilting and dragging upwards, the protrusion 13 on that side can be disengaged from the groove 15, thereby removing the support plate 7 and the sealing plate 6. Then, the new sealing plate 6, together with the support plate 7, is inserted into the socket 5. During this process, the two protrusions 13 will be squeezed until the protrusion 13 and the groove 15 are inserted into each other. This makes it convenient to replace the sealing plate 6 and the support plate 7. The support plate 7 and the sealing plate 6 together block the socket 5, which can further reduce the entry of foreign objects.

[0025] The guide housing 17 is fixed to the end of the guide seat 10 near the pressing plate 11. The length L1 of the radial end of the support plate 7 away from the virtual axis to the virtual hinge axis of the sealing plate 6 is greater than the length L2 of the radial end of the sealing plate 6 away from the virtual axis to its virtual hinge axis. When the groove 15 and the protrusion 13 are inserted, the radial end of the support plate 7 away from the virtual hinge axis of the sealing plate 6 is in contact with the guide housing 17. When the sealing plate 6 swings along its virtual hinge axis, the radial end of the support plate 7 away from the virtual hinge axis of the sealing plate 6 is always in contact with the guide housing 17. The second magnetic body is installed with the guide housing 17.

[0026] Furthermore, by setting the guide housing 17 to abut against the support plate 7, the sealing plate 6 and the support plate 7 can be prevented from being excessively inserted into the inner cavity of the housing 1, thereby facilitating the replacement of the sealing plate 6 and the support plate 7. Moreover, when the sealing plate 6 swings along its virtual hinge axis, the position of the support plate 7 can be limited and guided to ensure the stability of both positions.

[0027] The guide housing 17 is fixed with a limiting strip 18, and the support plate 7 is provided with a receiving groove 19. When the sealing plate 6 is away from the socket 5, the limiting strip 18 is away from the receiving groove 19 and disengages. When the sealing plate 6 is close to the socket 5, the limiting strip 18 is close to the receiving groove 19. When the sealing plate 6 and the support base 12 jointly block the socket 5, the limiting strip 18 and the receiving groove 19 are interlocked. The length of the receiving groove 19 is greater than the length of the limiting strip 18, and the difference between the two lengths is greater than the diameter of the virtual ball of the protrusion 13. When the limiting strip 18 and the receiving groove 19 are interlocked, the limiting strip 18 is allowed to move along the receiving groove 19.

[0028] Furthermore, by setting the limiting strip 18, the position of the support plate 7 can be limited, thereby preventing the support plate 7 from swinging excessively and detaching from the guide housing 17, and at the same time preventing the sealing plate 6 from swinging excessively upward. The length of the receiving groove 19 is greater than the length of the limiting strip 18, thus providing a margin for the left and right movement of the sealing plate 6 and the support plate 7.

[0029] The first magnetic accumulator 8 is inserted into the support plate 7, and the second magnetic accumulator 9 is inserted into the guide housing 17. The support plate 7 and the guide housing 17 are respectively threaded with detachable tightening bolts 20. The tightening bolts 20 on the support plate 7 tighten the first magnetic accumulator 8 so that the first magnetic accumulator 8 and the support plate 7 are in close contact. The tightening bolts 20 on the guide housing 17 tighten the second magnetic accumulator 9 so that the second magnetic accumulator 9 and the guide housing 17 are in close contact.

[0030] Furthermore, after removing the tightening bolt 20, the first magnetic 8 and the second magnetic 9 can be easily replaced without replacing the entire seat belt buckle, thus reducing costs.

[0031] The fastening mechanism 2 includes a lower slot 21, a mounting plate 22, an upper slot 23, a receiving housing 24, and a support rod 25. The lower slot 21 passes through one end of the housing 1, and the lower slot 21 is arranged opposite to the through part of the housing 1. A detachable mounting plate 22 is fastened to the end of the housing 1 near the lower slot 21. The upper slot 23 passes through the mounting plate 22 and is connected to the lower slot 21. Two receiving housings 24 are fixed to the mounting plate 22. The receiving housings 24 are connected to the upper slot 23 and are arranged opposite to each other. The support rod 25 is inserted into the two receiving housings 24 with a common gap. The diameter of the support rod 25 is larger than that of the lower slot 21 and smaller than that of the upper slot 23. The support rod 25 can be disengaged from the upper slot 23 along the guide housing 24. The axial direction of the support rod 25 is the same as the length direction of the lower slot 21.

[0032] Furthermore, by sewing the ends of the seat belt into a closed loop, and then passing the seat belt through the lower slot 21 from bottom to top, the closed loop is inserted into the support rod 25. Then, the mounting plate 22 is installed, and the housing 24 is inserted into the support rod 25 with a gap. This achieves the connection between the seat belt buckle and the seat belt. Since the diameter of the support rod 25 is larger than the lower slot 21 and smaller than the upper slot 23, the seat belt cannot detach from the lower slot 21, thus ensuring the safety of the car seat belt when it is tightened.

[0033] The fastening mechanism 2 includes a lower slot 21, a mounting plate 22, a connecting plate 26, and a mounting hole 27. The lower slot 21 passes through one end of the housing 1. The slot and the through part of the housing 1 are arranged opposite to each other. The end of the housing 1 near the slot is fastened with a detachable mounting plate 22. The mounting plate 22 is fixed with the connecting plate 26. The connecting plate 26 is inserted into the lower slot 21 with a gap and protrudes outward from the housing 1. The part of the connecting plate 26 protruding from the housing 1 has a mounting hole 27.

[0034] Furthermore, the seat belt can be fastened or connected to the car seat or frame in other ways (such as hinges) through the mounting hole 27, thereby ensuring the safety of the car seat belt when it is tightened.

[0035] The rebound pressing component 4 also includes a smooth rod 28, a second compression spring 29, a limiting groove 30, and a limiting bolt 31. The smooth rod 28 is fixed to the mounting plate 22. The smooth rod 28 is slidably connected to the guide seat 10. The sliding direction of the smooth rod 28 and the guide seat 10 is the same as the insertion direction of the seat belt insert. The smooth rod 28 achieves linear sliding relative to the housing 1 through the sliding connection with the guide seat 10. The second compression spring 29 is placed between the guide seat 10 and the smooth rod 28. The second compression spring 29 is interlocked outside the smooth rod 28. One end of the axial end of the second compression spring 29 is connected to the mounting plate 22. The two compression springs 29 and 29 are in contact with each other. The other end of the axial end of the compression spring 29 is in contact with the guide seat 10. Under the elastic repulsive force of the compression spring 29, the guide seat 10 tends to move towards the penetration point of the housing 1, that is, it rebounds. The guide seat 10 passes through the limiting groove 30. The length direction of the limiting groove 30 is the same as the insertion direction of the seat belt insert. The housing 1 is threaded with a detachable limiting bolt 31. The limiting bolt 31 is interlocked with the limiting groove 30. When the guide seat 10 slides along the smooth rod 28, the limiting bolt 31 moves relative to the guide seat 10 along the length direction of the limiting groove 30.

[0036] Furthermore, by removing the limiting bolt 31, the guide seat 10 and the pressing plate 11 can be pulled out from the housing 1, thereby facilitating the maintenance of the second compression spring 29 and the mounting plate 22.

[0037] like Figure 6 and Figure 7As shown, the locking mechanism 3 includes a guide platform 32, a guard plate 33, a lock jaw 34, a sliding seat 35, a locking tongue 36, a tension spring 37, a guide plate 38, a guide chamfer 39, a guide included angle 40, a limiting platform 41, a first wedge block 49, and a second wedge block 50. A downwardly inclined guide platform 32 is fixed to the inner wall of the housing 1 near the insertion port 5. The guide platform 32 is narrower near the insertion port 5 and wider away from it. Two guard plates 33 are fixed to the guide platform 32. The guide platform 32 and the insertion port 5 are respectively arranged on both sides of the guide platform 32 and are corresponding to each other in the length direction of the insertion port 5. The guide platform 32 and the insertion port 5 correspond to each other. The inner wall of the housing 1 is provided with a locking slot 34. The locking slot 34 and the guide platform 32 are located on the same inner side wall of the housing 1. The housing 1 is provided with a sliding seat 35 that slides in a straight line. The sliding seat 35 is fixed with a locking tongue 36. The locking tongue 36 can be inserted into the locking slot 34. The locking tongue 36 matches the through-hole of the seat belt insert. The sliding seat 35 and the inner wall of the housing 1 are fixed together with a tension spring 37. Under the elastic tension of the tension spring 37, the sliding seat 35 tends to move closer to the locking slot 34. The sliding direction of the sliding seat 35 is perpendicular to the insertion and removal direction of the seat belt insert. The end of the locking tongue 36 near the insertion port 5 is fixed with a guide plate 38, and the end near the insertion port 5 and the locking slot 34 is provided with a guide chamfer 39. The guide chamfer 39 and the guide plate 38 transition into each other. The guide plate 38 and the guide platform 32 together form a guide for the seat belt insert. The guide angle is 40°. A limiting platform 41 is fixed on the inner wall of the housing 1. The limiting platform 41 is located between the guide platform 32 and the lower slot 21. The limiting platform 41 is used to limit the contact of the seat belt insert. A first wedge block 49 is fixed on the guide seat 10. A second wedge block 50 is fixed on the sliding seat 35. When the guide seat 10 moves toward the lower slot 21, the first wedge block 49 can squeeze and push the second wedge block 50 to drive the sliding seat 35 and the locking tongue 36 away from the locking opening 34.

[0038] Furthermore, after the insert is inserted into the socket 5, it moves downwards and gradually contacts the guide plate 32. Then, guided by the guide plate 32 and the guard plate 33, it continues to move downwards, thus entering the guide angle 40. Then, it pushes the guide plate 38, causing the sliding seat 35, the guide plate 38, and the latch 36 to move away from the lock opening 34 together, and causing the tension spring 37 to stretch elastically until the lock opening 34 is aligned with the through point of the insert. At this time, the latch 36 is inserted into the through point of the insert under the elastic tension of the tension spring 37. This allows the insert to be locked, ensuring the safety of the car seat belt when it is tightened. By pressing down on the pressing plate 11, the guide seat 10 and the first wedge block 49 can be moved downward, thereby squeezing and pushing the second wedge block 50 to move the sliding seat 35 and the locking tongue 36 away from the locking port 34. This allows the insertion part to disengage from the locking tongue 36, thus releasing the lock. The seat belt that connects the insert usually has a tensioning mechanism, which can pull the insert away from the insertion port 5, and finally achieve complete separation of the insert from the housing 1.

[0039] The housing 1 includes a front half-housing 42, a rear half-housing 43, mounting strips 44, mounting slots 45, lower mounting bolts 46, and upper mounting bolts 47. The front half-housing 42 can fit into contact with the rear half-housing 43. A mounting strip 44 is fixed along the edge of the end of the front half-housing 42 that fits into the rear half-housing 43. A mounting slot 45 is fixed along the edge of the end of the rear half-housing 43 that fits into the front half-housing 42. The mounting strip 44 and the mounting slot 45 are matched and inserted into each other. Two sets of lower mounting bolts 46 are inserted through the gap in the mounting plate 22. Multiple lower mounting bolts 46 form a group, and the axial direction of each lower mounting bolt 46 is the same as the insertion and removal direction of the seat belt insert. One set of the lower mounting bolts 46 is threaded to the rear half housing 43, and the other set is threaded to the front half housing 42. The front half housing 42 is inserted through the gap with an upper mounting bolt 47. The axial direction of the upper mounting bolt 47 is perpendicular to the insertion and removal direction of the insert. The upper mounting bolt 47 is slidably connected to the sliding seat 35 and can be disengaged. The sliding seat 35 achieves linear sliding relative to the housing 1 by means of the sliding connection with the upper mounting bolt 47. The upper mounting bolt 47 is threaded to the rear half housing 43. The tension spring 37 is inserted through the upper mounting bolt 47. The end face of the pressing plate 11 facing the insertion direction of the seat belt insert is provided with a mark 48 for identifying the pressing direction.

[0040] Furthermore, the separable front half-shell 42 and rear half-shell 43 make it easier to replace and repair the components inside the shell 1, while the lower mounting bolt 46 and upper mounting bolt 47 make the relative positions of the front half-shell 42 and rear half-shell 43 more stable when the shell 1 is assembled, avoiding accidental separation.

[0041] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A retractable seatbelt buckle for automobiles, comprising a housing, a fastening mechanism, a locking mechanism, a spring-loaded pressing element, an insert, a sealing plate, a support plate, a first magnetic attractor, and a second magnetic attractor. One end of the housing is penetrated, and a fastening mechanism is installed at a position opposite the penetration point. The locking mechanism, which cooperates with the seatbelt insert, is installed inside the housing. The fastening mechanism is used to fasten to the outside. A spring-loaded pressing element is installed near the penetration point of the housing. The spring-loaded pressing element cooperates with the locking mechanism. After the seatbelt insert is inserted, the locking mechanism can promptly lock with the seatbelt insert. Under external pressure, the spring-loaded pressing element can move inward into the housing, driving the locking mechanism to release the lock on the seatbelt insert. Under elastic force, the spring-loaded pressing element has a tendency to spring outward from the housing. The characteristic of this feature is that... The spring-loaded pressing component has a through-hole for inserting the seat belt insert into the housing. The spring-loaded pressing component is hinged to a sealing plate. The sealing plate can swing along its virtual hinge axis to a certain angle to block the insertion hole. The sealing plate is fixed to a support plate, which is closer to the fastening mechanism than the sealing plate. The support plate is provided with a first magnetic attractor, and the spring-loaded pressing component is provided with a second magnetic attractor. At least one of the first and second magnetic attractors is a permanent magnet and both can be attracted by magnetism. The first and second magnetic attractors tend to move closer to each other under the action of magnetic attraction. Under the action of magnetic attraction, the first and second magnetic attractors enable the sealing plate to swing with the support plate to block the insertion hole.

2. The automotive retractable seatbelt buckle according to claim 1, characterized in that: The rebound pressing component includes a guide seat, a pressing plate, a support seat, a protrusion, and a compression spring. A guide seat, sliding in a straight line, is installed inside the housing. The sliding direction of the guide seat is the same as the insertion / removal direction of the seat belt insert. A pressing plate is fixed to the end of the guide seat near the housing penetration point, blocking the penetration point. The insertion port passes through the pressing plate. A pair of support seats are slidably connected to the guide seat. The sliding direction of the support seats is the same as the axial direction of the virtual hinge axis of the sealing plate. The two support seats are arranged opposite each other, and adjacent ends are respectively fixed with hemispherical and smooth protrusions. The virtual straight line where the virtual centers of the two protrusions lie is the same as the sliding direction of the support seats. The two support seats are respectively... A compression spring is fixed together with the guide seat. Under the elastic repulsive force of the compression spring, the two support seats tend to move closer to each other. The sealing plate is provided with two grooves corresponding to the protrusions. The two protrusions are inserted into the two grooves. The sealing plate uses the insertion of the grooves and protrusions to achieve a hinge connection compared to the spring-loaded pressing part. Under the action of external force, the two support seats can slide away from each other, so that the protrusions and grooves are completely separated. The end face of the sealing plate near the insertion port is provided with a buckle or buckle groove. The extension direction of the buckle or buckle groove is perpendicular to the sliding direction of the support seat. When the protrusions and grooves are fully inserted, the support seats can fit against the sealing plate. When the support seats and the sealing plate fit against each other, they jointly block the insertion port.

3. The automotive encloseable seatbelt buckle according to claim 2, characterized in that: The guide seat is fixed with a guide housing at the end near the pressing plate. The length L1 of the radial end of the support plate away from the virtual axis to the virtual hinge axis of the sealing plate is greater than the length L2 of the radial end of the sealing plate away from the virtual axis to its virtual hinge axis. When the groove and the protrusion are inserted, the radial end of the support plate away from the virtual hinge axis of the sealing plate is in contact with the guide housing. When the sealing plate swings along its virtual hinge axis, the radial end of the support plate away from the virtual hinge axis of the sealing plate is always in contact with the guide housing. The second magnetic body is installed with the guide housing.

4. The automotive encloseable seatbelt buckle according to claim 3, characterized in that: The guide shell is fixed with a limiting strip, and the support plate is provided with a receiving groove. When the sealing plate is away from the socket, the limiting strip is away from the receiving groove and disengages. When the sealing plate is close to the socket, the limiting strip is close to the receiving groove. When the sealing plate and the support base jointly block the socket, the limiting strip and the receiving groove are interlocked. The length of the receiving groove is greater than the length of the limiting strip, and the difference between the two lengths is greater than the diameter of the protruding virtual ball. When the limiting strip and the receiving groove are interlocked, the limiting strip is allowed to move along the receiving groove.

5. A retractable seatbelt buckle for automobiles according to claim 3 or 4, characterized in that: The first magnetic accumulator is inserted into the support plate, and the second magnetic accumulator is inserted into the guide housing. The support plate and the guide housing are respectively threaded with detachable tightening bolts. The tightening bolts on the support plate tighten the first magnetic accumulator so that the first magnetic accumulator is in close contact with the support plate. The tightening bolts on the guide housing tighten the second magnetic accumulator so that the second magnetic accumulator is in close contact with the guide housing.

6. A retractable seatbelt buckle for automobiles according to claim 2, characterized in that: The fastening mechanism includes a lower slot, a mounting plate, an upper slot, a receiving housing, and a support rod. The lower slot passes through one end of the housing, and the lower slot is positioned opposite to the through portion of the housing. A detachable mounting plate is fastened to the end of the housing near the lower slot. The upper slot passes through the mounting plate, and the upper slot is connected to the lower slot. The mounting plate fixes two receiving housings, which are connected to the upper slot and positioned opposite each other. A support rod is inserted into the two receiving housings through a common gap. The diameter of the support rod is larger than that of the lower slot but smaller than that of the upper slot. The support rod can be disengaged from the upper slot along the guide housing. The axial direction of the support rod is the same as the length direction of the lower slot.

7. A retractable seatbelt buckle for automobiles according to claim 2, characterized in that: The fastening mechanism includes a lower slot, a mounting plate, a connecting plate, and a mounting hole. The lower slot passes through one end of the housing. The slot and the through part of the housing are arranged opposite to each other. A detachable mounting plate is fastened to the end of the housing near the slot. The mounting plate is fixed with the connecting plate. The connecting plate is interlocked with the lower slot and protrudes outward from the housing. The part of the connecting plate protruding out of the housing has a mounting hole.

8. A retractable seatbelt buckle for automobiles according to claim 6 or 7, characterized in that: The rebound pressing component also includes a smooth rod, a second compression spring, a limiting groove, and a limiting bolt. The smooth rod is fixed to the mounting plate and is slidably connected to the guide seat. The sliding direction of the smooth rod and the guide seat is the same as the insertion direction of the seat belt insert. The smooth rod achieves linear sliding relative to the housing through the sliding connection with the guide seat. A second compression spring is placed between the guide seat and the smooth rod. The second compression spring is interlocked outside the smooth rod. One end of the axial end of the second compression spring abuts against the mounting plate, and the other end of the axial end of the second compression spring abuts against the guide seat. Under the elastic repulsive force of the second compression spring, the guide seat tends to move towards the penetration point of the housing, thus achieving rebound. The guide seat penetrates through the limiting groove. The length direction of the limiting groove is the same as the insertion direction of the seat belt insert. The housing is threaded with a detachable limiting bolt. The limiting bolt is interlocked with the limiting groove. When the guide seat slides along the smooth rod, the limiting bolt moves relative to the guide seat along the length direction of the limiting groove.

9. A retractable seatbelt buckle for automobiles according to claim 8, characterized in that: The locking mechanism includes a guide platform, a guard plate, a locking port, a sliding seat, a locking tongue, a tension spring, a guide plate, a guide chamfer, a guide included angle, a limiting platform, a first wedge block, and a second wedge block. A downwardly inclined guide platform is fixed to the inner wall of the housing near the insertion port. The guide platform is narrower near the insertion port and wider away from it. Two guard plates are fixed to the guide platform, positioned opposite each other on both sides of the guide platform and corresponding to the two ends of the insertion port along its length. The guide platform corresponds to the insertion port. A locking port is provided on the inner wall of the housing, and the locking port and the guide platform are located on the same inner wall of the housing. A sliding seat that slides along a straight line is provided inside the housing. A locking tongue is fixed to the sliding seat and can be inserted into the locking port. The locking tongue matches the penetration point of the seat belt insert. The sliding seat and the inner wall of the housing... A tension spring is fixed between the two parts. Under the elastic tension of the tension spring, the sliding seat tends to move closer to the lock. The sliding direction of the sliding seat is perpendicular to the insertion and removal direction of the seat belt insert. A guide plate is fixed at the end of the latch near the insertion port, and a guide chamfer is provided at the end near the insertion port and the lock. The guide chamfer and the guide plate transition into each other. The guide plate and the guide platform together form a guide angle to guide the seat belt insert. A limiting platform is fixed on the inner wall of the housing. The limiting platform is located between the guide platform and the lower slot. The limiting platform is used to limit the contact of the seat belt insert. A first wedge block is fixed on the guide seat, and a second wedge block is fixed on the sliding seat. When the guide seat moves towards the lower slot, the first wedge block can squeeze and push the second wedge block to move the sliding seat and the latch away from the lock.

10. A retractable seatbelt buckle for automobiles according to claim 9, characterized in that: The housing includes a front half-shell, a rear half-shell, mounting strips, mounting slots, lower mounting bolts, and upper mounting bolts. The front half-shell can fit into contact with the rear half-shell. A mounting strip is fixed along the edge of the end of the front half-shell that fits into the rear half-shell, and a mounting slot is fixed along the edge of the end of the rear half-shell that fits into the front half-shell. The mounting strip and the mounting slot are matched and inserted. Two sets of lower mounting bolts are inserted through the gap in the mounting plate. Multiple lower mounting bolts form a group, and the axial direction of each lower mounting bolt is the same as the insertion and removal direction of the seat belt insert. The two sets of lower mounting bolts... One set of bolts is threaded to the rear half of the housing, and the other set is threaded to the front half of the housing. An upper mounting bolt is inserted through the gap in the front half of the housing. The axial direction of the upper mounting bolt is perpendicular to the insertion and removal direction of the insert. The upper mounting bolt is slidably connected to the sliding seat and can be disengaged. The sliding seat achieves linear sliding relative to the housing by means of the sliding connection with the upper mounting bolt. The upper mounting bolt is threaded to the rear half of the housing. The tension spring is inserted through the gap outside the upper mounting bolt. The end face of the pressing plate facing the insertion direction of the seat belt insert is provided with a mark for identifying the pressing direction.

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