Safety belt force reducing and limiting adjusting device

Abstract

The utility model relates to the technical field of safety belts, in particular to a safety belt force reducing and limiting adjusting device, which comprises a fixed seat mounted at a preset position inside an automobile and provided with an inner cavity, and a sliding part arranged in the inner cavity of the fixed seat and capable of moving on the inner cavity along a preset path, the hole depths of the positioning holes are increased one by one; the mounting part is arranged on the sliding part, a connecting shaft is arranged on the mounting part, and the connecting shaft is used for guiding the safety belt; the adjusting mechanism is arranged on the fixed seat and is used for adjusting the position of the sliding part relative to the fixed seat so as to change the effective length and the force limiting value of the safety belt; the locking mechanism is arranged on the fixed seat and is used for locking the sliding piece at a preset position so as to fix the effective length and the force limiting value of the safety belt; the limiting mechanism is arranged on the fixed seat and is used for limiting the movement interval of the sliding part; the riding comfort and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seat belts, in particular to a seat belt reduction and force-limiting adjustment device. Background Art

[0002] In modern vehicle safety designs, the seat belt is one of the most fundamental and important passive safety devices, and its performance is directly related to the survival rate and injury degree of passengers in collision accidents. Traditional seat belt systems lack an effective force-limiting adjustment mechanism. During a collision, excessive seat belt tension may cause serious injuries to the chest and abdomen of passengers. Therefore, how to effectively fix the passengers while automatically adjusting the tension according to the severity of the collision has become an urgent problem to be solved.

[0003] In view of the above problems, there is an urgent need in the market for a seat belt adjustment device that can flexibly adjust the seat belt length and force-limiting value, and is easy to operate and highly reliable. The present utility model is designed based on this need, aiming to comprehensively optimize the performance of the seat belt through reasonable mechanical design, thereby improving the riding comfort and safety. Summary of the Utility Model

[0004] To solve the above technical problems, the present utility model provides a seat belt reduction and force-limiting adjustment device that improves riding comfort and safety.

[0005] A seat belt reduction and force-limiting adjustment device of the present utility model includes:

[0006] A fixed seat, installed at a preset position inside the vehicle, and an inner cavity is provided on the fixed seat:

[0007] A sliding member, arranged in the inner cavity of the fixed seat and capable of moving along a predetermined path on the inner cavity. A plurality of groups of positioning holes are provided on one side of the sliding member, and the depths of the positioning holes increase one by one;

[0008] A mounting member, arranged on the sliding member, and a connecting shaft is provided on the mounting member for guiding the seat belt;

[0009] An adjusting mechanism, arranged on the fixed seat, for adjusting the position of the sliding member relative to the fixed seat, thereby changing the effective length and force-limiting value of the seat belt;

[0010] A locking mechanism, arranged on the fixed seat, for locking the sliding member at a predetermined position to fix the effective length and force-limiting value of the seat belt;

[0011] A limiting mechanism, arranged on the fixed seat, for restricting the moving range of the sliding member.

[0012] Furthermore, the adjusting mechanism includes:

[0013] A hollow shaft is rotatably arranged on the sliding member, and the rotation axis of the hollow shaft is parallel to the movement track of the sliding member;

[0014] A threaded column is arranged on the hollow shaft. The threaded column rotates synchronously with the hollow shaft and is slidably installed along the length direction of the hollow shaft. The threaded column is in mating connection with the internal thread groove on the fixed seat;

[0015] A driving mechanism is arranged on the fixed seat and is used to drive the threaded column to rotate by the hollow shaft.

[0016] Preferably, the driving mechanism includes:

[0017] A driving shaft is rotatably arranged on the fixed seat, and the rotation axis of the driving shaft coincides with the rotation axis of the hollow shaft. The driving shaft drives the hollow shaft to rotate synchronously, and the hollow shaft is slidably installed along the length direction of the driving shaft;

[0018] An adjusting wheel is coaxially arranged on the driving shaft.

[0019] Further, the locking mechanism includes:

[0020] A lock catch is slidably arranged in the mounting hole of the fixed seat. The lock catch is snapped into any one of a plurality of positioning holes on the sliding member to lock the sliding member;

[0021] A threaded rod is installed in cooperation with the internal thread of the mounting hole of the fixed seat;

[0022] A spring has one end arranged on the threaded rod and the other end connected to the lock catch.

[0023] Preferably, the limiting mechanism includes:

[0024] A lead screw is rotatably arranged in the inner hole of the fixed seat, and the rotation axis of the lead screw is parallel to the movement track of the sliding member. The lead screw passes through the hole groove of the sliding member;

[0025] A limiting member is slidably arranged on the fixed seat, and the threaded groove hole of the limiting member is in mating connection with the lead screw for limiting the moving range of the sliding member.

[0026] Further, a multi-faceted adjusting hole is arranged at one end of the lead screw.

[0027] Preferably, a notch is arranged at the bottom end of the fixed seat, a fixing member is arranged at the notch, and the lead screw is rotatably connected to the fixing member.

[0028] Further, a sensor is arranged on the sliding member, and the sensor is connected to the vehicle-mounted computer for detecting the position of the sliding member.

[0029] A seat belt reduction and force - limiting adjustment device designed can flexibly adjust the length and force - limiting of the seat belt according to the specific needs of passengers, improve riding comfort and safety, has a simple and reliable structure, is easy to produce and maintain, and through reasonable mechanical design, realizes the optimization of seat belt performance, with high practical value. Brief Description of the Drawings

[0030] Figure 1 is a schematic structural view of a seat belt reduction and force - limiting adjustment device in the present utility model at a first angle;

[0031] Figure 2 is a schematic structural view of a seat belt reduction and force - limiting adjustment device in the present utility model at a second angle;

[0032] Figure 3 is a schematic cross - sectional structural view of the fixed seat of a seat belt reduction and force - limiting adjustment device in the present utility model;

[0033] Figure 4 is a schematic structural view of a seat belt reduction and force - limiting adjustment device in the present utility model after omitting the fixed seat;

[0034] Figure 5 is a schematic structural view of the threaded column of a seat belt reduction and force - limiting adjustment device in the present utility model;

[0035] Reference numerals in the drawings: 1, fixed seat; 2, sliding member; 3, mounting member; 4, connecting shaft; 5, adjusting mechanism; 51, hollow shaft; 52, threaded column; 53, driving mechanism; 53a, driving shaft; 53b, adjusting wheel; 6, locking mechanism; 61, lock catch; 62, threaded rod; 63, spring; 7, limiting mechanism; 71, lead screw; 72, limiting member; 73, fixing member; 8, sensor. Detailed Description of the Preferred Embodiments

[0036] The following will further describe in detail the specific embodiments of the present utility model with reference to the drawings and embodiments. The following embodiments are used to illustrate the present utility model, but are not used to limit the scope of the present utility model.

[0037] The present utility model relates to a seat belt reduction and force - limiting adjustment device, as Figures 1 to 5 shown, including:

[0038] A fixed seat 1, installed at a preset position inside the vehicle. The fixed seat 1 is made of high - strength material to ensure that it will not be easily damaged during a collision, and there is an inner cavity provided on the fixed seat 1:

[0039] A sliding member 2, arranged in the inner cavity of the fixed seat 1 and capable of moving along a predetermined path in the inner cavity. Multiple groups of positioning holes are provided on one side of the sliding member 2, and the hole depths of the positioning holes increase one by one;

[0040] The mounting member 3 is arranged on the sliding member 2, and a connecting shaft 4 is arranged on the mounting member 3, and the connecting shaft 4 is used for guiding the seat belt;

[0041] The adjusting mechanism 5 is arranged on the fixed seat 1 and is used to adjust the position of the sliding member 2 relative to the fixed seat 1, thereby changing the effective length and force limit value of the seat belt;

[0042] The locking mechanism 6 is arranged on the fixed seat 1 and is used to lock the sliding member 2 at a predetermined position to fix the effective length and force limit value of the seat belt;

[0043] The limiting mechanism 7 is arranged on the fixed seat 1 and is used to limit the moving range of the sliding member 2 to avoid potential safety hazards caused by excessive adjustment;

[0044] The working principle of this device is as follows:

[0045] When it is necessary to adjust the length and force limit value of the seat belt, then manually adjust it to the required position through the adjusting mechanism 5. During this process, as the sliding member 2 changes positions, the effective length of the seat belt on the connecting shaft 4 also changes accordingly. At the same time, due to the different depths of the positioning holes on the sliding member 2, this also affects the force limit characteristics of the seat belt. When the adjustment is completed, the locking mechanism 6 ensures that the sliding member 2 is fixed and the seat belt is in the best state. When a collision occurs and the seat belt is pulled to the state where the locking mechanism 6 is disengaged from the positioning hole, the sliding member 2 slides along the fixed seat 1, and then the locking mechanism cooperates with the next positioning hole on the sliding member 2. Since the depth of the positioning hole increases, the disengagement resistance also increases accordingly, so as to protect the passengers for buffering in turn;

[0046] The length and force limit of the seat belt can be flexibly adjusted according to the specific needs of passengers, improving the riding comfort and safety. The structure is simple and reliable, easy to produce and maintain. Through reasonable mechanical design, the performance of the seat belt is optimized, and it has high practical value.

[0047] Traditionally, manual adjustment devices can be realized by using existing technologies such as knobs or levers. However, these existing technologies usually can only achieve simple position movement or locking functions. They often lack precise control mechanisms and cannot achieve fine adjustment of the seat belt length and force limit value, and may generate relatively large frictional forces during the adjustment process, affecting the smoothness and accuracy of the adjustment. However, in the seat belt reduction force limit adjustment device involved in the present utility model, we are faced with the challenge of precisely adjusting the seat belt length and force limit value to ensure the best protection for passengers during a collision. To solve the above problems, this device designs a better adjusting mechanism 5, as Figure 3 Figure 5 shown, including:

[0048] The hollow shaft 51 is rotatably arranged on the sliding member 2, and the rotation axis of the hollow shaft 51 is parallel to the movement track of the sliding member 2, ensuring smooth movement;

[0049] The threaded column 52 is arranged on the hollow shaft 51. The threaded column 52 rotates synchronously with the hollow shaft 51, and the threaded column 52 is slidably installed along the length direction of the hollow shaft 51. The threaded column 52 is in mating connection with the internal thread groove on the fixed seat 1. This design of the screw pair enables a linear motion to be generated when the threaded column 52 rotates, thereby pushing the sliding member 2 to move along the inner cavity of the fixed seat 1;

[0050] The driving mechanism 53 is arranged on the fixed seat 1 and is used to drive the threaded column 52 to rotate by the hollow shaft 51. When the user operates the driving mechanism 53, the hollow shaft 51 can be driven to rotate, and then the threaded column 52 can be driven to move along the internal thread groove, finally realizing the position adjustment of the sliding member 2;

[0051] The working principle of the adjusting mechanism 5 of this device is as follows:

[0052] When it is necessary to adjust the effective length and force limit value of the safety belt, the user can operate the driving mechanism 53 to rotate the hollow shaft 51. The rotation of the hollow shaft 51 will drive the threaded column 52 to rotate together. Since the threaded column 52 and the internal thread groove on the fixed seat 1 form a screw pair, the threaded column 52 will generate a linear motion, pushing the sliding member 2 to move along the inner cavity of the fixed seat 1. The threaded column 52 is slidably arranged along the length direction of the hollow shaft, enabling the relative movement of the positions of the threaded column 52 and the sliding member 2, ensuring the sliding arrangement of the sliding member 2 and the fixed seat 1;

[0053] Through the design of the screw pair, precise control of the position of the sliding member 2 can be achieved, and then the effective length and force limit value of the safety belt can be accurately adjusted. The entire adjusting mechanism 5 is compact in design, occupies a small space, is easy to integrate into the existing automotive safety system, can provide more effective protection during a collision, and has important application value and market prospects.

[0054] As an optimal solution, a more optimal driving mechanism 53 is designed for this device, as Figure 4 shown, including:

[0055] The drive shaft 53a is rotatably arranged on the fixed seat 1, and the rotation axis of the drive shaft 53a coincides with the rotation axis of the hollow shaft 51. The drive shaft 53a drives the hollow shaft 51 to rotate synchronously, and the hollow shaft 51 is slidably installed along the length direction of the drive shaft 53a;

[0056] The adjusting wheel 53b is coaxially arranged on the drive shaft 53a, and the user can drive the drive shaft 53a to rotate by manually rotating the adjusting wheel 53b;

[0057] The working principle of the driving mechanism 53 of this device is as follows:

[0058] When it is necessary to adjust the effective length and force limit value of the seat belt, the user can start the adjustment process by manually rotating the adjustment wheel 53b. The rotation of the adjustment wheel 53b will drive the drive shaft 53a to rotate synchronously. The rotation of the drive shaft 53a will further drive the hollow shaft 51 to rotate synchronously. Since the hollow shaft 51 is connected to the threaded column 52, the threaded column 52 will also rotate accordingly. Since the threaded column 52 forms a screw pair with the internal thread groove on the fixed seat 1, the rotation of the threaded column 52 will generate a linear motion, pushing the sliding member 2 to move along the inner cavity of the fixed seat 1;

[0059] Through the synchronous rotation design of the drive shaft 53a and the hollow shaft 51, precise control of the position of the sliding member 2 can be achieved, thereby accurately adjusting the effective length and force limit value of the seat belt. The design of the adjustment wheel 53b enables the user to easily manually adjust the seat belt without complex tools or steps.

[0060] Traditionally, the locking mechanism can be implemented using existing technologies such as simple bolts or buckles. However, these existing technologies usually only achieve basic locking or unlocking functions. They often lack sufficient flexibility and adaptability to meet the locking requirements of the sliding member at different positions in the seat belt adjustment device, and may not provide sufficient buffer protection in case of emergency. However, in the seat belt reduction force adjustment device involved in the present utility model, the locking mechanism not only needs to achieve stable locking of the sliding member, but also needs to gradually release the tension in case of emergencies such as collisions to provide more progressive and effective buffer protection for passengers. To solve the above problems, a better locking mechanism 6 is designed in this device, as Figure 3 shown, including:

[0061] The lock catch 61 is slidably disposed in the mounting hole of the fixed seat 1 and can slide along the axial direction of the mounting hole. The lock catch 61 is engaged with any one of the plurality of positioning holes on the sliding member 2 to achieve locking of the sliding member 2;

[0062] The threaded rod 62 is installed in cooperation with the internal thread of the mounting hole of the fixed seat 1 and can move along the axial direction of the mounting hole;

[0063] The spring 63 has one end disposed on the threaded rod 62 and the other end connected to the lock catch 61. The function of the spring 63 is to provide a pre-tightening force when the lock catch 61 is engaged with the positioning hole, ensuring that the lock catch 61 firmly holds the sliding member 2 to prevent accidental loosening;

[0064] The working principle of the locking mechanism 6 of this device is as follows:

[0065] When the slider 2 is subjected to a traction force, when the traction force is greater than the sliding resistance between the latch 61 and the positioning hole, the connection between the latch 61 and the positioning hole is disengaged. After that, the latch 61 cooperates with the next positioning hole. Since the depth of the positioning hole increases, the resistance for the latch 61 to disengage from the positioning hole increases. By the disengagement of the latch 61 from the positioning hole, the passengers are buffered, improving the protection effect.

[0066] This design enables the seat belt to gradually release the tension in emergency situations such as collisions, providing a more gradual and effective buffer protection for passengers, reducing the risk of injury, significantly enhancing the safety and practicality of the seat belt adjustment device, and providing a safer, more comfortable and personalized riding experience for passengers.

[0067] As a preferred solution, the present device is designed with a better limiting mechanism 7, as Figures 3 to 4 shown, including:

[0068] A lead screw 71 is rotatably arranged in the inner hole of the fixed seat 1, and the rotation axis of the lead screw 71 is parallel to the moving track of the slider 2. The lead screw 71 passes through the hole groove of the slider 2, and a multi-faceted adjustment hole is arranged at one end of the lead screw 71, which is convenient for users to use tools for adjustment.

[0069] A limiting member 72 is slidably arranged on the fixed seat 1, and the threaded groove hole of the limiting member 72 is in threaded connection with the lead screw 71. The moving range of the limiting member 72 determines the moving interval of the slider 2, thereby ensuring that the slider 2 moves within a predetermined range.

[0070] The working principle of the limiting mechanism 7 of the present device is as follows:

[0071] When it is necessary to set the moving interval of the slider 2, the user can insert a tool into the multi-faceted adjustment hole of the lead screw 71 and rotate the lead screw 71. The rotation of the lead screw 71 will drive the limiting member 72 to move along the inner hole of the fixed seat 1. The moving range of the limiting member 72 is the moving interval of the slider 2. By adjusting the position of the limiting member 72, the maximum moving position of the slider 2 can be accurately set, avoiding the slider 2 exceeding the predetermined range, and ensuring that the adjustment range of the seat belt is within a reasonable range.

[0072] Through a unique design, the accurate limitation of the moving interval of the slider 2 is realized, ensuring that the slider 2 moves within a predetermined range and avoiding potential safety hazards caused by excessive adjustment. This design not only improves the riding comfort and safety, but also simplifies the production and manufacturing process, has important application value and market prospects, and provides a safer, more comfortable and personalized riding experience for passengers.

[0073] As a preferred solution, as Figure 2 shown, including, a notch is provided at the bottom end of the fixed seat 1, a fixing member 73 is provided at the notch, and the lead screw 71 is rotatably connected to the fixing member 73.

[0074] The fixing member 73 ensures the stable rotation of the lead screw 71, avoiding inaccurate position limitation caused by the shaking or deviation of the lead screw 71. At the same time, the notch on the fixing seat 1 facilitates the disassembly, assembly and maintenance of the device.

[0075] As a preferred solution, as Figure 4 shown, the sliding member 2 is provided with a sensor 8, and the sensor 8 is connected to the in-vehicle computer for detecting the position of the sliding member 2;

[0076] The setting of the sensor 8 enables the position of the sliding member 2 to be monitored in real time, ensuring that the adjustment state of the seat belt is always under supervision, improving the reliability and safety of the system. By connecting to the in-vehicle computer, intelligent management of the position of the sliding member 2 can be achieved, timely detecting and correcting abnormal situations, and avoiding potential safety hazards caused by the sliding member 2 exceeding the predetermined range.

[0077] For a seat belt reduction and force-limiting adjustment device of the present utility model, its installation method, connection method or setting method are all common mechanical methods, and any method that can achieve its beneficial effects can be implemented.

[0078] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A safety belt force reduction adjustment device, characterized in that: include: The fixing seat (1) is installed at a preset position inside the vehicle, and the fixing seat (1) is provided with an inner cavity: A sliding member (2) is arranged in the inner cavity of the fixing seat (1) and is capable of moving along a predetermined path in the inner cavity. A plurality of groups of positioning holes are arranged on one side of the sliding member (2), and the depths of the positioning holes are gradually increased. A mounting member (3) is arranged on the sliding member (2), and a connecting shaft (4) is arranged on the mounting member (3), and the connecting shaft (4) is used to guide the safety belt; An adjustment mechanism (5) is disposed on the fixing seat (1) and is used to adjust the position of the sliding member (2) relative to the fixing seat (1), thereby changing the effective length and force limit value of the safety belt; A locking mechanism (6) is arranged on the fixing seat (1) and is used to lock the sliding member (2) at a predetermined position so as to fix the effective length and force limit value of the safety belt; A limiting mechanism (7) is arranged on the fixing seat (1) and is used to limit the movable range of the sliding member (2).

2. The seat belt force reduction and limiting adjustment device according to claim 1, characterized in that: The regulating mechanism (5) comprises: A hollow shaft (51) is rotatably disposed on the sliding member (2), and a rotation axis of the hollow shaft (51) is disposed parallel to a moving track of the sliding member (2); A threaded column (52) is disposed on the hollow shaft (51), the threaded column (52) rotates synchronously with the hollow shaft (51), and the threaded column (52) is slidably installed along the length direction of the hollow shaft (51), and the threaded column (52) is matched and connected with the internal thread groove on the fixing seat (1); A driving mechanism (53) is arranged on the fixing seat (1) and is used for the hollow shaft (51) to drive the threaded column (52) to rotate.

3. The seat belt force reduction and limiting adjustment device according to claim 2, characterized in that: The driving mechanism (53) comprises: A driving shaft (53a) is rotatably mounted on the fixing seat (1), and the rotation axis of the driving shaft (53a) coincides with the rotation axis of the hollow shaft (51), the driving shaft (53a) drives the hollow shaft (51) to rotate synchronously, and the hollow shaft (51) is slidably mounted along the length direction of the driving shaft (53a); The adjusting wheel (53b) is coaxially arranged on the driving shaft (53a).

4. The seat belt force reduction and limiting adjustment device according to claim 1, characterized in that: The locking mechanism (6) comprises: A lock buckle (61) is slidably disposed in a mounting hole of the fixing seat (1), wherein the lock buckle (61) is snapped into any one of a plurality of positioning holes on the sliding member (2) to achieve locking of the sliding member (2); A threaded rod (62) is mounted in cooperation with the internal thread of the mounting hole of the fixing seat (1); A spring (63) has one end disposed on the threaded rod (62) and the other end connected to the lock buckle (61).

5. The seat belt force reduction and limiting adjustment device according to claim 1, characterized in that: The limiting mechanism (7) comprises: A lead screw (71) is rotatably disposed in the inner hole of the fixed seat (1), and the rotation axis of the lead screw (71) is arranged parallel to the moving track of the sliding member (2), and the lead screw (71) passes through the hole groove of the sliding member (2); A limiting member (72) is slidably disposed on the fixing seat (1), and a threaded slot hole of the limiting member (72) is cooperatively connected with the lead screw (71) and is used to limit the movable range of the sliding member (2).

6. The seat belt force reduction and limiting adjustment device according to claim 5, characterized in that: One end of the lead screw (71) is provided with a multi-faceted adjustment hole.

7. The seat belt force reduction and limiting adjustment device according to claim 5, characterized in that: The bottom end of the fixing seat (1) is provided with a notch, a fixing piece (73) is provided at the notch, and the lead screw (71) is rotatably connected to the fixing piece (73).

8. The seat belt force reduction and limiting adjustment device according to claim 1, characterized in that: The sliding member (2) is provided with a sensor (8), and the sensor (8) is connected to an on-board computer and is used to detect the position of the sliding member (2).

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