Safety belt retractor locking device

Abstract

The utility model relates to the technical field of safety belts, in particular to a safety belt retractor locking device, which comprises a mounting frame, a locking device, a locking device and a locking device, the mounting frame is independently and fixedly arranged, two through grooves are coaxially arranged on the mounting frame, and internal teeth are arranged in the through grooves; the fixing piece is mounted at the through groove in one side of the mounting frame; a connecting shaft is coaxially mounted at one end of the winding mechanism, and the connecting shaft and the fixing part are rotationally mounted in a matched manner; the connecting piece is fixedly installed on the connecting shaft, a supporting shaft is arranged on the connecting piece, and the supporting shaft and the connecting shaft are eccentrically installed; the locking piece is rotationally installed on the supporting shaft, an assembling piece is arranged on the locking piece, outer teeth are arranged on the locking piece, and the outer teeth of the locking piece and the inner teeth of the installation frame are installed in a matched mode; two ends of the first coil spring are respectively matched with the assembly part and the support shaft; the reset mechanism is mounted at the through groove in the other side of the mounting frame, and the reset mechanism is connected with the winding mechanism in a matched mode; the response speed and accuracy are improved, and meanwhile the use convenience and stability are enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of seat belts, and in particular to a seat belt retractor locking device. Background Technology

[0002] In automotive safety systems, seat belts are the most basic and crucial passive safety device, and their performance directly impacts the safety of occupants. The seat belt retractor, as a core component of the seat belt system, not only needs to ensure smooth retraction and extension of the seat belt, but also needs to lock quickly in the event of a collision or sudden deceleration to prevent injury to occupants due to forward momentum.

[0003] When a vehicle encounters a sudden situation that causes it to decelerate sharply, if the seat belt retractor fails to lock in time, it may cause passengers to be injured due to inertia and be thrown forward. Conversely, if the retractor is too sensitive, it may cause accidental locking during normal use, causing inconvenience to the driver and passengers. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a seat belt retractor locking device that improves response speed and accuracy, while enhancing ease of use and stability.

[0005] This utility model discloses a seat belt retractor locking device, comprising:

[0006] The mounting bracket is independently fixed and has two through slots coaxially arranged on it, and the through slots are equipped with internal teeth.

[0007] The fastener is installed in the through slot on one side of the mounting bracket;

[0008] The winding mechanism has a connecting shaft coaxially mounted at one end, and the connecting shaft is rotatably mounted in conjunction with the fixing component;

[0009] The connector is fixedly installed on the connecting shaft, and a support shaft is provided on the connector. The support shaft is eccentrically installed on the connecting shaft.

[0010] The locking component is rotatably mounted on the support shaft, and the locking component is provided with an assembly component. The locking component is provided with external teeth, and the external teeth of the locking component are engaged with the internal teeth of the mounting bracket for installation.

[0011] The first coil spring is installed at both ends with the assembly component and the support shaft, respectively.

[0012] The reset mechanism is installed in the through slot on the other side of the mounting frame, and the reset mechanism is connected in conjunction with the winding mechanism.

[0013] As a preferred embodiment of this utility model, when the winding mechanism drives the connecting shaft to rotate slowly, the locking member rotates synchronously with the connecting shaft through the first coil spring, and the safety belt is freely extended and retracted under the traction force.

[0014] When the winding mechanism drives the connecting shaft to rotate rapidly, the locking component initially rotates slower than the connecting shaft due to its own inertia. At this time, the locking component and the mounting bracket through groove produce an eccentric displacement, and the external teeth of the locking component cooperate with the internal teeth of the mounting bracket to lock the rotation of the winding mechanism.

[0015] As a preferred embodiment of this utility model, a limiting post is installed on the connector, and the limiting post is located in the inner groove of the locking member. The locking member and the limiting post are connected to make the locking member and the through groove of the mounting bracket concentric.

[0016] As a preferred embodiment of this utility model, the winding mechanism includes:

[0017] The torsion bar has mounting bases at both ends, and the connecting shaft is coaxially mounted on one side of the mounting base.

[0018] The spindle is installed by mates with two mounting bases and is used to secure one end of the seat belt.

[0019] As a preferred embodiment of this utility model, the mounting seat on the side with the locking element is rotatably connected to the spindle, and the mounting seat on the other side is fixedly connected to the spindle.

[0020] As a preferred embodiment of this utility model, the reset mechanism includes:

[0021] An auxiliary component is installed in the through slot of the mounting bracket, and an adapter shaft is rotatably mounted on the auxiliary component. The adapter shaft is coaxially fixedly mounted on the mounting base.

[0022] The second coil spring, which is connected to the adapter shaft and auxiliary components respectively, is used to provide winding power for the seat belt.

[0023] As a preferred embodiment of this utility model, the mounting bracket is equipped with an electronic locking device, which is connected to the car computer and is used to lock the rotation of the connecting shaft after the sensor detects a collision.

[0024] As a preferred embodiment of this utility model, the mounting bracket is provided with an extension member, and the extension member has pre-drilled assembly holes for fixing.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows: The mounting frame serves as a supporting base, and the through groove and internal teeth on it provide a guiding base for the locking component to cooperate in installation and operation. The fixing component cooperates with the connecting shaft to ensure the stable rotation of the winding mechanism and realize the normal winding and unwinding of the seat belt. The support shaft installed eccentrically on the connecting component can drive the locking component to produce displacement changes when the connecting shaft rotates. When subjected to external impact or abnormal movement, when the connecting shaft and the locking component become eccentric, the external teeth on the locking component mesh with the internal teeth of the mounting frame, accurately triggering the locking action, preventing the connecting shaft from rotating, and effectively preventing the seat belt from being pulled out accidentally. The first coil spring provides a stable traction force to the locking component when the seat belt is normally wound and unwinding, ensuring that it rotates synchronously with the connecting shaft, avoiding accidental locking caused by slight shaking and other factors, and improving the convenience and reliability of use. The reset mechanism cooperates with the winding mechanism to quickly and stably rewind the seat belt after use, keeping the device neat and orderly and ready for the next use. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the installation structure of a seat belt retractor locking device according to this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a seat belt retractor locking device under a first angle in this utility model;

[0028] Figure 3 This is a schematic diagram of the structure of a seat belt retractor locking device in this utility model with the fixing component omitted;

[0029] Figure 4 This is a schematic diagram of the structure of a seat belt retractor locking device in this utility model, with auxiliary components omitted;

[0030] Figure 5 This is an exploded structural diagram of the winding mechanism of a seat belt retractor locking device according to this utility model;

[0031] The following are labels in the attached diagram: 1. Mounting bracket; 11. Extension component; 2. Fixing component; 3. Winding mechanism; 31. Torsion bar; 32. Mounting base; 33. Spindle; 4. Connecting shaft; 5. Connecting component; 51. Support shaft; 52. Limiting post; 6. Locking component; 61. Assembly component; 7. First coil spring; 8. Reset mechanism; 81. Auxiliary component; 82. Adapter shaft; 83. Second coil spring; 9. Electronic locking mechanism. Detailed Implementation

[0032] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] like Figures 1 to 5 As shown, this embodiment provides a seatbelt retractor locking device, including:

[0035] Mounting bracket 1 serves as the supporting foundation for the overall structure and is independently fixed. Mounting bracket 1 has two through slots coaxially arranged, and internal teeth are provided in the through slots.

[0036] Fixture 2 is installed in the through groove on one side of the mounting bracket 1;

[0037] The winding mechanism 3 is the core component for winding the seat belt. A connecting shaft 4 is coaxially mounted on one end, and the connecting shaft 4 is rotatably mounted in cooperation with the fixing part 2 to realize the winding and unwinding operation of the seat belt.

[0038] The connector 5 is fixedly installed on the connecting shaft 4, and the connector 5 is provided with a support shaft 51, which is eccentrically installed with the connecting shaft 4;

[0039] The locking component 6 is rotatably mounted on the support shaft 51, and the locking component 6 is provided with an assembly component 61. The locking component 6 is provided with external teeth, and the external teeth of the locking component 6 are engaged with the internal teeth of the mounting bracket 1. The support shaft 51 will drive the locking component 6 to produce displacement changes, thereby triggering the locking action. The locking component 6 is embedded in the internal teeth, preventing the connecting shaft 4 from continuing to rotate, thereby achieving the locking of the seat belt.

[0040] The first coil spring 7 is installed at both ends in conjunction with the assembly 61 and the support shaft 51, respectively. Its main function is to provide a traction force to the locking piece 6 when the seat belt is in the normal retracted state, so that it rotates synchronously with the connecting shaft 4 to avoid accidental locking.

[0041] The reset mechanism 8 is installed in the through slot on the other side of the mounting frame 1, and the reset mechanism 8 is connected to the winding mechanism 3 for the retraction and winding of the safety belt.

[0042] When the winding mechanism 3 drives the connecting shaft 4 to rotate slowly, the locking member 6 rotates synchronously with the connecting shaft 4 through the first coil spring 7. At this time, the seat belt is freely extended and retracted by the traction force.

[0043] When the winding mechanism 3 drives the connecting shaft 4 to rotate rapidly, the locking part 6 starts to rotate slower than the connecting shaft 4 due to its own inertia. At this time, the locking part 6 and the through groove of the mounting frame 1 produce an eccentric displacement. The outer teeth of the locking part 6 cooperate with the inner teeth of the mounting frame 1 to lock the rotation of the winding mechanism 3.

[0044] In this embodiment, the mounting bracket 1 serves as a supporting base, and the through groove and internal teeth on it provide a guiding base for the locking member 6 to be installed and operated. The fixing member 2 cooperates with the connecting shaft 4 to ensure the stable rotation of the winding mechanism 3 and realize the normal winding and unwinding of the seat belt. The support shaft 51, which is eccentrically mounted on the connecting member 5, can drive the locking member 6 to undergo displacement changes when the connecting shaft 4 rotates. When subjected to external impact or abnormal movement, when the connecting shaft 4 and the locking member 6 become eccentric, the external teeth on the locking member 6 engage with the internal teeth of the mounting bracket 1, accurately triggering the locking action, preventing the connecting shaft 4 from rotating, and effectively preventing the seat belt from being pulled out accidentally. The first coil spring 7 provides a stable traction force to the locking member 6 when the seat belt is being wound and unwinding normally, ensuring that it rotates synchronously with the connecting shaft 4, avoiding accidental locking caused by slight shaking and other factors, and improving the convenience and reliability of use. The reset mechanism 8 cooperates with the winding mechanism 3 to quickly and stably rewind the seat belt after use, keeping the device neat and orderly and ready for the next use.

[0045] As a preferred embodiment of the above technical solution, such as Figures 2 to 5 As shown, a limiting post 52 is installed on the connector 5, and the limiting post 52 is located in the inner groove of the locking member 6. The locking member 6 and the limiting post 52 are connected to make the locking member 6 and the through groove of the mounting bracket 1 concentric.

[0046] In this embodiment, the limiting post 52 is installed on the connector 5 and located in the inner groove of the locking member 6 to limit the rotation range of the locking member 6, so as to prevent the locking member 6 from rotating too much when it is reset by the first coil spring 7, and to prevent the locking member 6 from having a relative eccentric displacement with the connecting shaft 4 when the winding mechanism 3 drives the mounting belt to retract quickly.

[0047] As a preferred embodiment of the above technical solution, such as Figures 2 to 5 As shown, the winding mechanism 3 includes:

[0048] The torsion bar 31 has mounting bases 32 installed at both ends, and the connecting shaft 4 is coaxially installed on one side of the mounting base 32;

[0049] The spindle 33 is installed in conjunction with two mounting bases 32, and the spindle 33 is used to fix one end of the safety belt;

[0050] The mounting base 32 on the side with the locking element 6 is rotatably connected to the spindle 33, and the mounting base 32 on the other side is fixedly connected to the spindle 33.

[0051] In this embodiment, the torsion bar 31 serves as the core power transmission component, with the mounting seats 32 at both ends providing stable support. Meanwhile, one mounting seat 32 is coaxially mounted with the connecting shaft 4 to ensure reliable transmission of winding power. The spindle 33 is installed in conjunction with the two mounting seats 32 to firmly fix one end of the seat belt. When the locking member 6 locks the seat belt, the spindle 33 provides a buffering force through the torsion bar 31 to reduce damage to passengers.

[0052] As a preferred embodiment of the above technical solution, such as Figures 2 to 5 As shown, the reset mechanism 8 includes:

[0053] The auxiliary component 81 is installed in the through slot of the mounting bracket 1, and the adapter shaft 82 is rotatably mounted on the auxiliary component 81. The adapter shaft 82 is coaxially fixedly mounted on the mounting base 32.

[0054] The second coil spring 83 is connected to the adapter shaft 82 and the auxiliary component 81 respectively. The second coil spring 83 is used to provide winding power for the seat belt.

[0055] In this embodiment, the auxiliary component 81 is installed in the through slot of the mounting bracket 1 to provide a stable rotational support base for the adapter shaft 82. The adapter shaft 82 is coaxially fixed to the mounting base 32, realizing a tight connection with the winding mechanism 3. This allows the winding power generated by the second coil spring 83 to be accurately transmitted to the winding mechanism 3. The second coil spring 83 cooperates with the adapter shaft 82 and the auxiliary component 81 respectively. When the seat belt is pulled out for use, it accumulates elastic potential energy. When the seat belt is finished using, the second coil spring 83 releases the elastic potential energy and converts it into winding power, driving the adapter shaft 82 and the winding mechanism 3 to rotate together, quickly and stably retracting and winding the seat belt, ensuring that the seat belt is neatly stored.

[0056] As a preferred embodiment of the above technical solution, such as Figures 1 to 5 As shown, the mounting bracket 1 is equipped with an electronic locking lock 9, which is connected to the car computer and is used to lock the rotation of the connecting shaft 4 after the sensor detects a collision.

[0057] In this embodiment, the electronic locking lock 9 can receive collision signals detected by the vehicle's sensors in real time. When a collision occurs, it can lock the rotation of the connecting shaft 4 instantly through rapid data interaction with the vehicle's computer. This combination of electronic and mechanical locking mechanisms forms a multi-layered safety system, effectively reducing the forward displacement of occupants in a collision and lowering the risk of injury.

[0058] As a preferred embodiment of the above technical solution, such as Figures 2 to 4 As shown, the mounting bracket 1 is provided with an extension 11, and the extension 11 has pre-drilled assembly holes for fixing.

[0059] In this embodiment, the extension 11 provides an additional installation interface for the device. Through the reserved assembly holes, bolts, screws and other connectors can be used to easily fix the device to different positions such as car seats and car bodies, effectively solving the adaptation problem caused by differences in installation space or structure, and expanding the application scenarios of the device.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A seat belt retractor lock apparatus characterized by, include: Mounting bracket (1) is independently fixed. Two through slots are coaxially arranged on the mounting bracket (1), and internal teeth are provided in the through slots. The fastener (2) is installed in the through groove on one side of the mounting bracket (1); The winding mechanism (3) has a connecting shaft (4) coaxially mounted on one end, and the connecting shaft (4) is rotatably mounted in cooperation with the fixing member (2); A connector (5) is fixedly installed on the connecting shaft (4), and a support shaft (51) is provided on the connector (5), and the support shaft (51) is eccentrically installed with the connecting shaft (4); The locking component (6) is rotatably mounted on the support shaft (51), and the locking component (6) is provided with an assembly component (61). The locking component (6) is provided with external teeth, and the external teeth of the locking component (6) are engaged with the internal teeth of the mounting bracket (1). The first coil spring (7) is installed at both ends in cooperation with the assembly (61) and the support shaft (51); The reset mechanism (8) is installed in the through slot on the other side of the mounting frame (1), and the reset mechanism (8) is connected to the winding mechanism (3).

2. The seat belt retractor lock apparatus of claim 1 wherein, When the winding mechanism (3) drives the connecting shaft (4) to rotate slowly, the locking member (6) rotates synchronously with the connecting shaft (4) through the first coil spring (7), and the seat belt is freely extended and retracted by the traction force at this time; When the winding mechanism (3) drives the connecting shaft (4) to rotate rapidly, the locking member (6) starts to rotate slower than the connecting shaft (4) due to its own inertia. At this time, the locking member (6) and the mounting bracket (1) through groove produce an eccentric displacement. The outer teeth of the locking member (6) cooperate with the inner teeth of the mounting bracket (1) to lock the rotation of the winding mechanism (3).

3. The seat belt retractor lock apparatus of claim 1 wherein, The connector (5) is equipped with a limiting post (52), and the limiting post (52) is located in the inner groove of the locking member (6). The locking member (6) and the limiting post (52) are connected to make the locking member (6) and the through groove of the mounting bracket (1) concentric.

4. The seat belt retractor lock apparatus of claim 1 wherein, The winding mechanism (3) includes: The torsion bar (31) has mounting seats (32) installed at both ends, and the connecting shaft (4) is coaxially mounted on the mounting seat (32) on one side; The spindle (33) is installed in conjunction with the two mounting bases (32) respectively, and the spindle (33) is used to fix one end of the safety belt.

5. The seat belt retractor lock apparatus of claim 4 wherein, The mounting base (32) on the side where the locking element (6) is installed is rotatably connected to the spindle (33), and the mounting base (32) on the other side is fixedly connected to the spindle (33).

6. The seat belt retractor lock apparatus of claim 4 wherein, The reset mechanism (8) includes: An auxiliary component (81) is installed in the through slot of the mounting bracket (1), and a transition shaft (82) is rotatably mounted on the auxiliary component (81). The transition shaft (82) is coaxially fixedly mounted on the mounting base (32). The second coil spring (83) is connected to the adapter shaft (82) and the auxiliary component (81) respectively, and the second coil spring (83) is used to provide winding power for the seat belt.

7. The seat belt retractor lock apparatus of claim 1 wherein, The mounting frame (1) is provided with an electronic fixed lock (9) which communicates with the automobile computer and is used for locking the rotation of the connecting shaft (4) after collision detected by the sensor.

8. The seat belt retractor lock of claim 1, wherein: The mounting frame (1) is provided with an extension piece (11) which is provided with an assembly hole reserved for fixation.

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