Installation equipment for automobile safety belt

Abstract

The utility model provides an installation device of an automobile safety belt, and belongs to the technical field of automobile passive safety device production. According to the installation equipment for the automobile safety belt, through the design that the end head positioning part is installed on the folding mechanism, when the end head positioning part is matched with the tail end of the safety belt, the pin striking mechanism strikes out the belt pin, and the folding mechanism folds the tail end of the safety belt with the belt pin as the axis, and the step design based on the installation equipment, the problems that in the prior art, the installation process is complex in structure and low in cost are solved. The folding length of the belt tail and whether the belt pin is neglected to be installed are confirmed by an operator through manual visual inspection, and the error-proofing capability is poor; and the problem that a woven belt wrapping a belt pin is in interference fit with a cavity of a core shaft, so that an operator manually retracts a sewn belt tail into the core shaft of a retractor, and physical power is wasted is solved. The installation equipment comprises a fixing mechanism, a folding mechanism, a pin hitting mechanism, a sewing mechanism and a belt collecting mechanism, the folding mechanism is provided with an end positioning part, and the belt collecting mechanism is provided with a force detector.

Description

Technical Field

[0001] This utility model belongs to the field of automotive passive safety device manufacturing technology, and in particular relates to an installation device for automotive seat belts. Background Technology

[0002] In the field of safety webbing manufacturing and installation technology, the end of the automotive safety webbing is called the webbing tail. This webbing tail needs to be folded and sewn to form a webbing hole to install a webbing pin. The safety webbing, through the cooperation of the webbing pin and the mandrel of the retractor, fixes the webbing tail inside the mandrel, thereby realizing the retractor's function of winding and unwinding the safety webbing. For the specific structure of the retractor, please refer to relevant literature, such as the pre-tensioning two-stage force-limiting retractor and seat belt device described in Chinese Utility Model Patent No. CN111114487B, and the pawl-type pre-tensioning termination retractor described in Chinese Utility Model Patent No. CN113895393B, etc., which will not be elaborated here.

[0003] Existing technology for installing the seat belt tail in the retractor spindle mainly utilizes sewing machines and some tooling. The specific operating steps are as follows:

[0004] S1: The operator manually passes the end of the safety webbing through the spindle hole of the retractor;

[0005] S2: The operator visually confirms the folding position of the belt tail, manually folds the belt tail to overlap with the webbing, and pushes the belt tail into the pressure plate;

[0006] S3: Manually adjust the position of the belt tail, and then insert the belt pin into the webbing hole formed by folding the belt tail;

[0007] S4: The operator pulls the webbing to tighten the belt pin, and steps on the sewing machine pedal to drive the pressure plate to press down and tighten the folded belt tail;

[0008] S5: Start the sewing machine to sew. After sewing is completed, manually tuck the tape tail into the retractor spindle.

[0009] S6: Visually inspect for any missing pins.

[0010] The entire production and installation process of the aforementioned existing technology relies on the operator's manual visual inspection to confirm the fold length of the safety belt tail and whether the belt pin is missing, resulting in poor error prevention capabilities. At the same time, because the webbing that wraps the belt pin and the cavity of the spindle have an interference fit, the operator has to manually retract the sewn belt tail into the spindle of the retractor, which is physically demanding and may not be able to retract it completely. Utility Model Content

[0011] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide an installation device for automotive seat belts, which solves the problems of the existing installation process, which relies on the operator to visually confirm the folding length of the belt tail and whether the belt pin is missing, resulting in poor error prevention; and the fact that the webbing that wraps the belt pin and the cavity of the spindle have an interference fit, so the operator has to manually retract the sewn belt tail into the spindle of the retractor, which is physically demanding.

[0012] To achieve the above and other related objectives, this utility model provides an installation device for a car seat belt, used to insert the tail of the seat belt into a retractor, comprising: a fixing mechanism for fixing the retractor; and a folding mechanism with an end positioning part.

[0013] When the tail end of the seat belt and the end positioning part are engaged, the pin-attaching mechanism pushes out a pin in the width direction of the seat belt, and the folding mechanism folds the tail end of the seat belt around the pin as an axis.

[0014] A sewing mechanism for sewing the tail of the folded seat belt, wherein the sewn tail of the seat belt forms a belt hole, the belt pin is located in the belt hole, and the belt pin and the sewn tail of the seat belt constitute a belt tail;

[0015] A take-up mechanism is used to take the tape tail into the take-up unit and is equipped with a force detector.

[0016] Optionally, the fixing mechanism includes:

[0017] A placement section for placing the retractor;

[0018] A clamping part is used to clamp the retractor on the placement part;

[0019] The clamping part is used to press the clamped retractor onto the placement part.

[0020] Optionally, the folding mechanism includes:

[0021] A belt fixing part is used to hold the seat belt, and the end positioning part is located at one end of the belt fixing part;

[0022] When the tail end of the safety belt and the end positioning part are engaged, the pressure belt part presses the safety belt tightly in the fixed belt part;

[0023] The lifting section lifts and folds the safety belt, which is pressed into the fixed belt section, up with the belt pin as the axis.

[0024] The horizontal push section pushes the folded seat belt horizontally and folds it over using the belt pin as an axis.

[0025] The lifting part will press down the folded seat belt until the folded seat belt is snug.

[0026] Optionally, the fixed belt section includes:

[0027] A first fixed strip and a second fixed strip, wherein a fixed strip groove is formed between the first fixed strip and the second fixed strip;

[0028] The seat belt is placed along the fixed belt groove, and the end positioning part is installed at the left end of the fixed belt groove;

[0029] The pin ejected by the pin ejection mechanism is positioned above the seat belt.

[0030] Optionally, the cancellation mechanism includes:

[0031] Pin placement section, used to hold the belt pin;

[0032] The pin-thrusting part is used to push the pin in the pin-thrusting part out toward the width direction of the seat belt;

[0033] The sales restriction department is used to limit the distance that the sales department can extend with the sales cord.

[0034] The limiting post, by adjusting the limiting post, limits the distance of the pin ejected by the pin ejector.

[0035] Optionally, the first fixed strip has a pin hole, and the pin-driving part drives the pin from the pin hole into the fixed strip groove; the second fixed strip has a post hole, the position of the post hole is opposite to the position of the pin hole; the pin-limiting part drives the limiting post from the post hole into the fixed strip groove.

[0036] Optionally, the end positioning part includes a guide plate, a baffle, and an end sensor; the guide plate is installed at one end of the belt fixing part; the baffle is installed on the guide plate and its position is adjustable; the seat belt is placed in the belt fixing part and extends to the guide plate; the end sensor detects whether the seat belt and the baffle are in contact.

[0037] Optionally, the folding mechanism further includes an auxiliary lateral pusher for bringing the folded seatbelt close to the axis of the belt pin; and a lateral pusher for pushing and folding the seatbelt close to the axis of the belt pin, using the belt pin as the axis.

[0038] Optionally, the take-up mechanism includes: a belt reel and a belt motor; the belt reel is provided with a belt opening, the first end of the safety belt is wrapped around the belt reel through the belt opening, the belt motor drives the belt reel to rotate; the force detector detects the torque of the belt motor.

[0039] As described above, the installation device and method for installing a car seat belt according to this utility model have at least the following beneficial effects:

[0040] Compared to existing technologies that rely on manual visual inspection by the operator to confirm the folded length of the seatbelt tail, this automotive seatbelt installation equipment uses an end positioning part mounted on the folding mechanism. When this end positioning part mates with the tail end of the seatbelt, a pin-locking mechanism engages the pin, and the folding mechanism folds the tail of the seatbelt around this pin, ensuring consistent dimensions of the folded tail. Furthermore, compared to existing technologies where the operator manually retracts the sewn tail into the retractor, which is laborious due to the interference fit between the webbing securing the pin and the core shaft cavity, this equipment uses a retracting mechanism to retract the tail, saving considerable effort. Simultaneously, a force detector mounted on the retracting mechanism assesses the pin's installation status based on the force applied during retracting, preventing any missing pins. Attached Figure Description

[0041] Figure 1 The diagram shown is a schematic diagram of an installation device for a car seat belt according to this utility model.

[0042] Figure 2 The diagram shown is a schematic of the fixing mechanism of this utility model.

[0043] Figure 3 The diagram shown is a schematic of the folding mechanism of this utility model.

[0044] Figure 4 The diagram shown is a schematic of the knocking mechanism of this utility model.

[0045] Figure 5 The diagram shown is a schematic of the belt-retracting mechanism of this utility model.

[0046] Figure 6 The flowchart shown is a method for installing a car seat belt according to this utility model.

[0047] Component designation explanation

[0048] A. Retractor; B. Seat belt; C. Belt pin; D. Belt tail.

[0049] Fixing mechanism 1, placement part 11, clamping part 12, pressing part 13;

[0050] Folding mechanism 2, end positioning part 21, guide plate 211, baffle 212, fixed belt part 22, first fixed belt strip 221, second fixed belt strip 222, fixed belt groove 223, pressing belt part 23, lifting part 24, horizontal pushing part 25, auxiliary horizontal pushing part 26.

[0051] Locking mechanism 3, pin placement part 31, sensor 311, locking part 32, locking post 33, limiting pin part 34, limiting post 35;

[0052] Sewing mechanism 4;

[0053] 5. Belt winding mechanism, 51. Belt winding pulley, 511. Belt opening, 52. Belt winding motor. Detailed Implementation

[0054] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0055] Please see Figures 1 to 6 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0056] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0057] Please see Figure 1 This utility model provides an installation device for a car seat belt, used to insert the tail of the seat belt B into a retractor A. The main difference between this device and the prior art lies in its structural design. The installation device includes:

[0058] like Figure 1 and Figure 2 The fixing mechanism 1 shown is used to fix the retractor A. After the tail end of the safety belt B passes through the spindle, the retractor A can be placed on the fixing mechanism 1. When performing folding operations on the tail end of the safety belt B or pulling the tail D of the belt later, the fixing mechanism 1 will fix the retractor A. When not fixed, the operator can adjust the retractor A in real time according to the real-time situation on site.

[0059] like Figure 1 and Figure 3The folding mechanism 2 shown is used to automatically fold the tail of the seat belt B. The specific folding size is controlled by the end positioning part 21 installed on it.

[0060] like Figure 1 and Figure 4 When the tail end of the seat belt B and the end positioning part 21 are engaged, the pinning mechanism 3 extends the pin C in the width direction of the seat belt B, and the folding mechanism 2 folds the tail end of the seat belt B around the pin C. Generally, the extended pin C is located above the seat belt B, and the folding mechanism 2 folds the seat belt B upward around the pin C. Compared with other designs, the upward folding mechanism 2 has better stability.

[0061] like Figure 1 The sewing mechanism 4 shown is used to sew the tail of the folded seat belt B. The sewn tail of the seat belt B forms a belt hole, and the belt pin C is located in the belt hole. The belt pin C and the sewn tail of the seat belt B form the belt tail D. The sewing mechanism 4 can be the same as the sewing mechanism 4 used in the prior art and can be directly transferred, or it can be redesigned to adapt to cooperate with other mechanisms.

[0062] like Figure 1 and Figure 5 The take-up mechanism 5 shown is used to take the tape tail D into the take-up unit A, and is equipped with a force detector to detect the force of the take-up mechanism 5 when taking in the tape tail D.

[0063] Compared to existing technologies that rely on the operator to visually confirm the folded length of the seat belt B's tail, this vehicle seat belt B installation device uses an end positioning part 21 mounted on the folding mechanism 2. When the end positioning part 21 mates with the tail of the seat belt B, the pin-thrusting mechanism 3 engages the pin C. The folding mechanism 2 then folds the tail of the seat belt B around the pin C, ensuring consistent dimensions of the folded tail of the seat belt B. Compared to existing technologies where the operator manually retracts the sewn tail D into the retractor A, which is laborious due to the interference fit between the webbing wrapped around the pin C and the core shaft cavity, this device uses a retracting mechanism 5 to retract the tail D into the retractor A, making it much easier. Furthermore, the force detector mounted on the retracting mechanism 5 judges the installation status of the pin C based on the force applied when the retracting mechanism 5 retracts the tail D, preventing the pin C from being missed.

[0064] In another implementation, please refer to Figure 2 The fixed mechanism 1 includes:

[0065] like Figure 2 and Figure 5 The placement section 11 shown is used to place the retractor A.

[0066] like Figure 2 The clamping part 12 shown is used to clamp the retractor A on the placement part 11. The clamping part 12 can be composed of clamping blocks in the front-back direction or the left-right direction. The placement part 11 is a slot formed between two clamping blocks. The distance between the two clamping blocks, i.e. the width of the slot, is adjustable to accommodate retractors A of various sizes.

[0067] like Figure 2 and Figure 5 The clamping part 13 shown is used to press the clamped retractor A onto the placement part 11. In conjunction with the use of the clamping part 12, it ensures that the retractor A can be firmly fixed.

[0068] In another embodiment, the folding mechanism 2 includes:

[0069] like Figure 3 The fixed belt section 22 shown is used to place the seat belt B. The end positioning section 21 is located at one end of the fixed belt section 22. After the seat belt B passes through the spindle in the retractor A on the fixing mechanism 1, the seat belt B is pulled onto the fixed belt section 22.

[0070] like Figure 3 The pressure belt part 23 shown is used to press the safety belt B into the fixed belt part 22 when the tail end of the safety belt B is engaged with the end positioning part 21. The pressure belt part 23 can be controlled by a cylinder installed on the folding mechanism 2, or it can be powered by other means, which will not be described in detail here.

[0071] like Figure 3 The lifting part 24 shown will lift and fold the seat belt B, which is pressed into the fixed belt part 22, with the belt pin C as the axis. Because it is an upward lifting and folding, the belt pin C pushed out by the pin-throwing mechanism 3 is above the seat belt B, so that the upward folded seat belt B can wrap the belt pin C inside.

[0072] like Figure 3 The lateral pusher 25 shown above lifts and folds the seat belt B, and then folds it horizontally with the belt pin C as the axis, completing the main action of folding the seat belt B; then the lifting part 24 presses down the folded seat belt B until the folded seat belt B is close to the ground, completing the folding of the tail of the seat belt B. The tail of the folded seat belt B and the belt pin C form the belt tail D.

[0073] The power units for both the lifting section 24 and the horizontal pushing section 25 can be electric cylinders for easy control, which will not be elaborated here.

[0074] In another implementation, please refer to Figure 3 and Figure 4The belt fixing part 22 includes a first belt fixing strip 221 and a second belt fixing strip 222, and a belt fixing groove 223 is formed between the first belt fixing strip 221 and the second belt fixing strip 222. The seat belt B is placed along the belt fixing groove 223, and the end positioning part 21 is installed at the left end of the belt fixing groove 223. The belt pin C issued by the pinning mechanism 3 is located above the seat belt B. This embodiment provides a specific structural form of the belt fixing part 22. The distance between the first belt fixing strip 221 and the second belt fixing strip 222 can be adjusted to accommodate seat belts B of different widths. The seat belt B is pulled along the belt fixing groove 223 to the end positioning part 21, and the end positioning part 21 fixes the tail end of the seat belt B before proceeding with subsequent work.

[0075] In another embodiment, the knocking mechanism 3 includes:

[0076] like Figure 4 The pin section 31 shown is used to place the pin C. The pin section 31 can be a pin groove composed of two iron blocks arranged opposite each other. The distance between the two iron blocks can be adjusted to accommodate pins C of different sizes.

[0077] like Figure 4 The pin-throwing part 32 shown is used to push the belt pin C in the pin-mounting part 31 toward the width direction of the seat belt B. The pin-throwing part 32 consists of an electric cylinder that provides power and a pin-throwing post 33 driven by the electric cylinder to push the belt pin C out of the pin-mounting part 31.

[0078] like Figure 4 The pin limiting part 34 and the limiting post 35 shown are used to limit the distance of the pin C ejected by the pin-thrusting part 32 by adjusting the limiting post 35. The pin limiting part 34 is a power device, and an electric cylinder can also be selected for easy control. In conjunction with the first fixed belt strip 221 and the second fixed belt strip 222 in the previous embodiment, the structure of the pin-thrusting mechanism 3 is further described. The first fixed belt strip 221 has a pin hole, and the pin-thrusting part 32 drives the pin C from the pin hole into the fixed belt groove 223. The second fixed belt strip 222 has a post hole, and the position of the post hole is opposite to the position of the pin hole. The pin limiting part 34 drives the limiting post 35 from the post hole into the fixed belt groove 223. More specific steps will be described in the installation method below.

[0079] In another implementation, please refer to Figure 3The end positioning part 21 includes a guide plate 211, a baffle 212, and an end sensor. The guide plate 211 is installed at one end of the belt fixing part 22. The baffle 212 is installed on the guide plate 211 and its position is adjustable to enhance the adaptability of the positioning part. The seat belt B is placed in the belt fixing part 22 and extends to the guide plate 211. The end sensor detects whether the seat belt B and the baffle 212 are in contact. Only when the end sensor detects that the end of the seat belt B is in contact with the baffle 212 will subsequent work be performed.

[0080] In another implementation, please refer to Figure 3 The folding mechanism 2 also includes an auxiliary horizontal pusher 26, which is used to bring the folded seat belt B close to the axis of the belt pin C. Then, the horizontal pusher 25 pushes the seat belt B close to the axis of the belt pin C and folds it horizontally with the belt pin C as the axis. Compared with the horizontal pusher 25 directly pushing the folded seat belt B and folding it horizontally with the belt pin C as the axis, the design of the auxiliary horizontal pusher 26 ensures the fit between the belt pin C and the folded seat belt B, which is beneficial for the subsequent belt retraction mechanism 5 to retract the belt tail D into the spindle.

[0081] In another implementation, please refer to Figure 5 The belt take-up mechanism 5 includes a belt reel 51 and a belt motor 52. The belt reel 51 is provided with a belt opening 511. The first end of the safety belt B is wrapped around the belt reel 51 through the belt opening 511. The belt motor 52 drives the belt reel 51 to rotate, thereby pulling the safety belt B and taking the belt tail D into the spindle. The force detector detects the torque of the belt motor 52 and determines whether the belt pin C is installed in place.

[0082] In other implementations, such as Figure 4 As shown, a sensor 311 is installed at the pin placement part 31 to detect whether the pin placement part 31 is equipped with a pin C, so as to prevent the pin C from being missing from the beginning of the process.

[0083] Please see Figures 1 to 6 The installation method of the car seat belt B installation device described above includes the following steps:

[0084] S1: Place the belt pin C in the pin slot formed by two opposing iron blocks in the pin placement part 31. The sensor 311 at the pin placement part 31 detects whether the belt pin C is placed in the pin placement part 31. If the belt pin C is detected, proceed with the subsequent work. Otherwise, reinstall the belt pin C in the pin placement part 31. Then, pass the tail end of the seat belt B through the spindle of the retractor A, and then place the retractor A on the placement part 11 of the fixing mechanism 1, that is, in the slot formed between the two clamping blocks.

[0085] S2: The operator manually pulls the end of the seat belt B into the fixed belt groove 223 formed by the first fixed belt strip 221 and the second fixed belt strip 222. The seat belt B is placed along the fixed belt groove 223. The end of the seat belt B is pulled to slide along the guide plate 211 to the baffle 212. When the end sensor detects the end of the seat belt B and the baffle 212 abuts against it, the end of the seat belt B is fixed on the end positioning part 21. The pressing part 23 presses the seat belt B tightly in the fixed belt groove 223.

[0086] S3: The clamping part 12 clamps the retractor A on the placement part 11, and the pressing part 13 moves from top to bottom to press the retractor A; then, driven by the corresponding power device, the pin 33 pushes the belt pin C out from the pin placement part 31, i.e., the pin groove. At this time, only half of the belt pin C is pushed out, that is, one end of the belt pin C is pushed out to the top of the seat belt B; the other end of the belt pin C is still located in the pin hole of the first fixed belt strip 221, while the limiting post 35, driven by the limiting post part 34, moves out from the post hole of the second fixed belt strip 222. The middle part extends above the seat belt B, and the limiting post 35 and the belt pin C abut against each other; then, the lifting part 24 drives the guide plate 211, the baffle 212, and the seat belt B to move upward together, that is, the tail of the seat belt B is folded upward with the belt pin C (including the limiting post 35) as the axis; then the auxiliary horizontal pushing part 26 brings the lifted and folded seat belt B close to the axis of the belt pin C (that is, the axis of the limiting post 35), and then the horizontal pushing part 25 pushes the seat belt B horizontally folded with the belt pin C as the axis; thus completing the folding of the tail of the seat belt B.

[0087] S4: The sewing mechanism 4 sews the tail of the folded seat belt B, and the sewn tail of the seat belt B forms a belt hole; at this time, the corresponding power device continues to drive the pin 33 to completely push the belt pin C out of the pin insertion part 31, i.e., the pin groove. At the same time, the limiting part 34 moves backward and no longer blocks the limiting pin. The limiting pin retracts into the pin hole, and the belt pin C leaves the pin hole of the first fixed belt strip 221 and is wrapped by the tail of the folded and sewn seat belt B. The belt pin C and the sewn tail of the seat belt B form the belt tail D.

[0088] S5: Wrap the first end of the seat belt B around the belt loop 511 on the belt reel 51, start the belt reel motor 52 to drive the belt reel 51 to rotate, thereby pulling the seat belt B and retracting the belt tail D into the spindle; at the same time, the force detector detects the torque of the belt reel motor 52 to determine whether the belt pin C is installed in place.

[0089] In summary, compared to the prior art where the operator visually confirms the folded length of the seat belt B, this invention's seat belt B installation device uses an end positioning part 21 mounted on the folding mechanism 2. When the end positioning part 21 engages with the end of the seat belt B, the pin-attaching mechanism 3 engages the pin C. The folding mechanism 2 then folds the end of the seat belt B around the pin C, ensuring consistent dimensions of the folded end of the seat belt B. Compared to the prior art where the operator manually retracts the sewn end D into the retractor A, which is laborious due to the interference fit between the webbing wrapped around the pin C and the core shaft cavity, this device uses a retracting mechanism 5 to retract the end D into the retractor A, making it much easier. Furthermore, the force detector mounted on the retracting mechanism 5 judges the installation status of the pin C based on the force applied when the retracting mechanism 5 retracts the end D, preventing the pin C from being missed.

[0090] This installation method, based on the aforementioned steps of the automotive seat belt B installation equipment, solves the problems of existing installation processes, such as: the fixing mechanism 1 fixing the retractor A when the end of the seat belt B mates with the end positioning part 21; the pin-attaching mechanism 3 extending the pin C in the width direction of the seat belt B; the folding mechanism 2 folding the end of the seat belt B around the pin C; the sewing mechanism 4 sewing the folded end of the seat belt B together; and the retracting mechanism 5 retracting the end D into the spindle of the retractor A. A force detector detects the force exerted by the retracting mechanism 5 during retracting. This method addresses the issues of existing installation processes, such as the operator's reliance on visual inspection to confirm the folded length of the end D and whether the pin C is missing, resulting in poor error prevention; and the need for manual labor to retract the sewn end D into the spindle of the retractor A due to the interference fit between the webbing that tightens the pin C and the cavity of the spindle.

[0091] Therefore, this utility model effectively overcomes the shortcomings of the prior art and has high industrial application value.

[0092] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An installation device for a car seat belt, used to insert the tail end of the seat belt into a retractor, characterized in that, The application relates to a device for installing a safety belt of a vehicle, which comprises: a fixing mechanism for fixing a roll-up device; a folding mechanism provided with a tip positioning part; a pin driving mechanism for driving a belt pin towards the width direction of the safety belt when the tail end of the safety belt cooperates with the tip positioning part, and for folding the tail of the safety belt around the belt pin; a sewing mechanism for sewing the folded tail of the safety belt, and for forming a belt hole in the tail of the safety belt, wherein the belt pin is located in the belt hole, and the belt pin and the tail of the safety belt form a belt tail; a belt collecting mechanism for collecting the belt tail into the roll-up device, and provided with a force detector.

2. The seat belt mounting device according to claim 1, wherein The fixing mechanism comprises: a placing part for placing the roll-up device; a clamping part for clamping the roll-up device on the placing part; a pressing part for pressing the clamped roll-up device on the placing part.

3. The seat belt mounting device according to claim 1, wherein The folding mechanism comprises: a belt positioning part for placing the safety belt, wherein the tip positioning part is located at one end of the belt positioning part; a belt pressing part for pressing the safety belt in the belt positioning part when the tail end of the safety belt cooperates with the tip positioning part; a lifting part for lifting and folding the safety belt pressed in the belt positioning part around the belt pin; a horizontal pushing part for horizontally pushing and folding the safety belt lifted and folded around the belt pin; the lifting part presses the horizontally pushed and folded safety belt until the folded safety belt is tightly attached.

4. The seat belt mounting device according to claim 3, wherein The belt positioning part comprises: a first belt positioning strip and a second belt positioning strip, wherein a belt positioning groove is formed between the first belt positioning strip and the second belt positioning strip; the safety belt is placed along the belt positioning groove, and the tip positioning part is installed at the left end of the belt positioning groove; the belt pin driven by the pin driving mechanism is located above the safety belt.

5. The seat belt mounting device according to claim 4, wherein The pin driving mechanism comprises: a pin placing part for placing the belt pin; a pin driving part for driving the belt pin in the pin placing part towards the width direction of the safety belt; a pin limiting part for limiting the distance of the belt pin driven by the pin driving part; a limiting column, and the limiting distance of the belt pin driven by the pin driving part is limited by adjusting the limiting column.

6. The device for installing a safety belt of a vehicle according to claim 5, wherein: a pin hole is formed in the first belt positioning strip, and the pin driving part drives the belt pin into the belt positioning groove from the pin hole; a column hole is formed in the second belt positioning strip, and the position of the column hole is opposite to that of the pin hole; the limiting column is driven into the belt positioning groove from the column hole by the pin limiting part.

7. The device for installing a safety belt of a vehicle according to claim 3, wherein: the tip positioning part comprises a guide plate, a baffle and a tip sensor; the guide plate is installed at one end of the belt positioning part, and the baffle is installed on the guide plate and can be adjusted in position; the safety belt is placed in the belt positioning part and extends to the guide plate, and the tip sensor detects whether the safety belt and the baffle abut.

8. The device for installing a safety belt of a vehicle according to claim 3, wherein: the folding mechanism further comprises an auxiliary horizontal pushing part for making the safety belt lifted and folded around the belt pin. The horizontal pushing part horizontally pushes the safety belt close to the axis of the belt pin to be folded over the belt pin.

9. The seat belt mounting device according to claim 1, wherein The belt collecting mechanism comprises: a belt winding wheel and a belt winding motor; The belt winding wheel is provided with a belt port, and the first end of the safety belt is wound around the belt winding wheel through the belt port, and the belt winding motor drives the belt winding wheel to rotate; The force detector detects the torsion of the belt winding motor.

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