Ribbon height adjusting device

Abstract

The present invention relates to a webbing height adjusting device for a safety belt system of a traffic vehicle, comprising: a shock-absorbing buffer assembly having an auxiliary webbing combined with an elastic element and an upper ring connected above one side of a seat, the auxiliary webbing or the elastic element being disposed below the upper ring, and a webbing height adjuster disposed below the auxiliary webbing or the elastic element; a sliding block combined with an elastic piece is arranged in a main body of the braid height adjuster, a sleeve shell is arranged on the outer side of the main body, a main braid of a safety belt system penetrates through an upper ring and then penetrates through the main body, an auxiliary braid penetrates through the main body and the sliding block, and the sliding block under the action of elastic force and the main body relatively clamp and lock the auxiliary braid. The braid height adjuster is connected between the auxiliary braid and the main braid to form an upper positioning point for a seat passenger, the damping and buffering assembly provides damping and buffering performance, the tension of the auxiliary braid is increased so that the locking effect can be enhanced, and the sliding block and the main body can be simply and conveniently operated to move relative to each other so as to unlock the auxiliary braid. The height position of the braid height adjuster on the main braid and the auxiliary braid is adjusted.

Description

Technical Field

[0001] The invention relates to a safety belt system for a transportation vehicle, and in particular to a belt height adjustment device capable of providing a height position adjustment function for an upper positioning point of a main belt in the safety belt system. Background Art

[0002] The three-point safety belt system currently used in the seats of vehicles such as cars, trucks or multi-purpose vehicles to provide safety protection for drivers or passengers is mainly to install the webbing retractor of the three-point safety belt system on the side of the vehicle body adjacent to the seat, and the webbing extending from the webbing retractor first extends upward through the upper ring above the pillar on one side of the seat, and the end of the webbing is fixed at the lower side of the seat adjacent to the webbing retractor. The occupant on the seat places the webbing obliquely from top to bottom on the front side of the shoulder and chest of the body, and then inserts the connecting tongue on the webbing into the seat buckle on the other side of the seat. The webbing extends to the side of the seat adjacent to the webbing retractor through the other section of the connecting tongue, so that the webbing is placed horizontally on the waist and abdomen of the seat occupant, forming a three-point safety belt system, and the webbing of the safety belt system can restrain the body of the occupant on the seat.

[0003] In the three-point seat belt system of currently known transportation vehicles, the shoulder section of the webbing that is obliquely against the shoulder and chest of the seat occupant requires considerable tension to restrain the seat occupant, and this webbing tension often causes discomfort to the seat occupant. Moreover, when the webbing is tightened on the body of the seat occupant, if the height of the webbing at the upper fixed point near the shoulder of the seat occupant cannot be adjusted, in an emergency, the neck of the seat occupant may be cut by the webbing, etc. Therefore, a webbing height adjuster must be used in combination with an upper ring installed on the upper section of the pillar on one side of the seat to allow the seat occupant to adjust the height of the webbing according to his or her body shape, thereby ensuring the safety of the seat belt system. As the safety of drivers and passengers in vehicles has received more and more attention, the webbing height adjuster of the seat belt system has become an essential safety device.

[0004] The structure of the webbing height adjustment device of the existing seat belt system is similar to the webbing adjustment device (WEBBING ADJUSTENT DEVICE) of US10654442, which includes an upper ring component, a movable frame plate, a moving part movably arranged in the movable frame plate, and an outer cover sleeved on the outer side of the movable frame plate. The upper ring component is installed above one side of the seat of the transportation vehicle. The webbing connected to the webbing retractor in the seat belt system passes through the movable frame or its connecting part and then puts on the ring, and the webbing shoulder section of the webbing is passed between the movable frame plate and the moving part. The tension of the webbing can drive the movable frame plate and the moving part to move relative to each other and clamp and lock the webbing, forming an upper positioning point for the occupant on the seat to adjust the height. When the webbing adjustment device is not in use, it is hung on the upper ring component by the outer cover sleeved on the outer side of the movable frame plate.

[0005] The webbing adjustment device of the existing seat belt system is connected between the front section of the webbing (i.e., the section of the webbing located between the webbing retractor and the upper ring) and the shoulder section of the webbing obliquely against the shoulder and chest of the seat occupant. It can indeed achieve the purpose of adjusting the height position of the upper fixing point of the webbing, but it does not have an auxiliary shock-absorbing and buffering function. Moreover, the webbing height adjuster utilizes the tension of the webbing to passively clamp and lock the webbing. When there is no occupant on the seat using the seat belt system, the webbing height adjuster is easy to shift and must be hung on the upper ring on the vehicle pillar by a cover. Therefore, the occupant on the seat must adjust the height position of the webbing height adjuster every time.

[0006] In addition, in the existing seat belt system of transportation vehicles, in order to further improve the safety of the seat belt system, on the basis of the original webbing connected to the webbing retractor as the main webbing, a webbing height adjuster is used to provide a height adjustment function for the positioning point on the main webbing, or an auxiliary shock-absorbing component is installed on the pillar on one side of the seat, the auxiliary shock-absorbing component is combined with the main webbing, or the auxiliary shock-absorbing component is combined with the webbing height adjuster and the main webbing, etc., so as to utilize the elastic components in the auxiliary shock-absorbing component to provide shock-absorbing and buffering elasticity to the occupants restrained on the seat.

[0007] Regarding the aforementioned known webbing height adjustment mechanisms with both height adjustment and shock-absorbing elasticity, there are generally “WEB POSITION ADJUSTMENTAND ATTENUATION APPARATUS” disclosed in US9499121 B2 and US9738248 B2, “Shock absorbing height adjusters for restraint systemsand associated systems and methods” disclosed in US9809193 B2, “Height adjusters with anti-cinch features for occupant restraint systems” disclosed in US10953847B2, and “Height adjusters with anti-cinch features for occupant restraint systems” disclosed in US11273790B2, etc.

[0008] In the aforementioned, the "WEBPOSITION ADJUSTMENT AND ATTENUATION APPARATUS" disclosed in US 9499121 B2 and US 9738248 B2 discloses that the safety belt system includes an auxiliary shock absorbing component and an upper fixing member, the auxiliary shock absorbing component includes an auxiliary webbing connected to an elastic member of the auxiliary webbing, the upper fixing member is arranged above the side of the seat, the lower end of the auxiliary shock absorbing component is connected to the lower side of the seat, the auxiliary webbing passes through the upper fixing member, and the end of the auxiliary webbing is connected to an upper ring. In the safety belt system of the transportation vehicle, the main webbing connected to the webbing retractor passes through the upper ring and can restrain the occupant on the seat, and the elastic member of the auxiliary shock absorbing component provides a shock absorbing and buffering function. However, the combination of the aforementioned auxiliary shock absorbing component and the main webbing can only provide a limited upward and downward elastic displacement of the height of the upper positioning point by the elastic member, but it is not a substantial height adjustment function.

[0009] The aforementioned "webbing adjustment and shock absorbing device" disclosed in US 9499121 B2 and US 9738248 B2 also discloses a webbing adjustment device, which is a long belt body connected between the upper ring and the vehicle body, the long belt body has elastic deformation performance, and a connecting seat capable of adjusting the position and positioning up and down is installed on the long belt body, which is a segmented height adjustment mechanism. In the safety belt system of the transportation vehicle, the main webbing connected to the webbing retractor passes through the upper ring and then passes through the connecting seat, so that the height position of the upper positioning point can be adjusted at several predetermined positions on the long belt body by using the connecting seat, and on the other hand, the shock absorbing and buffering performance is provided by the elastic deformation performance of the long belt body.

[0010] In the aforementioned, the shock-absorbing height adjuster disclosed in US 9809193 B2, "Shock-absorbing height adjuster for seat belt system and related system and method", comprises a track that can be installed on a vehicle column on one side of the seat, a D-ring that can slide on the track, an adjustment stop that can be slidably connected to the track and can lock the D-ring at multiple positions along the track, and a biasing member that can push the D-ring to be positioned on the adjustment stop. The height position of the D-ring on the track is adjusted by the adjustment stop, so that the main webbing pulled out from the webbing retractor on one side of the seat first passes upward through the D-ring of the shock-absorbing height adjuster and then connects downward to the side of the seat. Moreover, by means of the compressible biasing member, the D-ring can adapt to the tension of the main webbing passing through the D-ring and move away from the stop, thereby providing a shock-absorbing and buffering effect.

[0011] Among the aforementioned, the patent case US10953847 B2 "Height adjuster with anti-pinch function for seat belt system" and another patent case US11273790 B2 "Height adjuster with anti-pinch function for seat belt system" disclose a webbing height adjuster, which includes a fixing member that can be fixed on a vehicle pillar on one side of the seat, an elastic member connected to the fixing member, and a length adjustment mechanism provided at the lower end of the elastic member. An upper ring with adjustable height position is provided in the length adjustment mechanism, so that the main webbing pulled out from the webbing retractor on one side of the seat first passes upward through the upper ring of the shock-absorbing height adjuster and then connects downward to the side of the seat, so as to adjust the height position of the upper ring by using the length adjustment mechanism, and the elastic member located between the vehicle pillar and the upper ring provides a shock-absorbing and buffering effect.

[0012] As for the overall performance of the aforementioned several related webbing height adjustment mechanisms, although they can be connected between the main webbing and the auxiliary webbing, and can adjust the height position of the upper positioning point, and allow the main webbing passing through the webbing height adjuster to move freely, and use a biasing member or an elastic member or an elastic long belt body to provide shock-absorbing and buffering elasticity to the main webbing. However, when the aforementioned existing webbing height adjustment mechanism is applied to the seat belt system on the seat of a transportation vehicle, after the seat occupant fastens the main webbing, when he wants to adjust the height position of the D ring or the upper ring through which the main webbing is passed, he needs to unlock the adjustment stopper or the length adjustment mechanism respectively, so that there is obviously an inconvenience in operation during use. Summary of the invention

[0013] The technical problem to be solved by the present invention is to provide a webbing height adjustment device to solve the problem that the existing webbing height adjustment device used in the safety belt system is inconvenient to operate when adjusting the height position of the upper positioning point.

[0014] The technical solution proposed by the present invention is to provide a webbing height adjustment device, which is used in a seat belt system of a transportation vehicle and is connected to a main webbing extending from a webbing retractor in the seat belt system; the webbing height adjustment device comprises:

[0015] A shock-absorbing and buffering assembly, which can be installed in the transportation vehicle, and includes an auxiliary webbing, an upper ring arranged at the upper end of the auxiliary webbing, and at least one elastic element connected to the auxiliary webbing, the upper ring and the lower end of the auxiliary webbing are respectively connected to the upper and lower positions in the transportation vehicle, the auxiliary webbing has at least one flexure section, the elastic element is located on the side of the flexure section, the upper end and the lower end of the elastic element are respectively fixed to the auxiliary webbing located above and below the flexure section, the main webbing passes through the upper ring, the two side sections of the main webbing located on the upper ring are respectively a webbing front section and a webbing shoulder section, and the auxiliary webbing is located between the webbing front section and the webbing shoulder section; and

[0016] A webbing height adjuster is disposed below the upper ring and connected between the webbing shoulder section of the main webbing and the auxiliary webbing to form an upper positioning point capable of adjusting the height position. The webbing height adjuster comprises:

[0017] A main body, comprising a frame, and a webbing abutment portion and a webbing connection portion respectively formed on the upper and lower sections of the frame, a movable space for the auxiliary webbing to pass through is formed between the webbing abutment portion and the frame, and a main webbing channel for the shoulder section of the webbing to pass through is formed between the webbing connection portion and the frame;

[0018] A slider is movably mounted in the movable space of the main body and has an oblique channel for the auxiliary webbing to pass through;

[0019] an elastic member, which is installed between the slider and the main body and provides elastic force, so that the slider can clamp the auxiliary webbing relative to the webbing abutting portion of the main body; and

[0020] A shell can be movably mounted on the outer side of the main body up and down. The shell can be operated to cause the slider and the main body to have relative displacement to release the clamping state of the auxiliary webbing. When the shell is released, the elastic force of the elastic member can cause the slider and the main body to clamp the auxiliary webbing relative to each other.

[0021] In the webbing height adjustment device as described above, the auxiliary webbing has a flexure section, the flexure section is located at the lower section of the auxiliary webbing, and at least one elastic element is provided on one side or two opposite sides of the flexure section, and the upper end and the lower end of the elastic element are respectively connected to the upper and lower positions of the flexure section of the auxiliary webbing.

[0022] In the webbing height adjustment device as described above, the auxiliary webbing has two flexure sections, which are respectively located at the upper section and the lower section of the auxiliary webbing. At least one elastic element is provided on one side or two opposite sides of each flexure section, and the upper end and the lower end of the elastic element are respectively connected to the upper and lower positions of the flexure section of the auxiliary webbing.

[0023] Another technical solution proposed by the present invention is to provide a webbing height adjustment device, which is used in a seat belt system of a transportation vehicle and is connected to a main webbing extending from a webbing retractor in the seat belt system; the webbing height adjustment device comprises:

[0024] A shock-absorbing and buffering assembly, which can be installed in the transportation vehicle, and includes an auxiliary webbing, an upper ring connected to the upper end of the auxiliary webbing, and an elastic element connected to the lower end of the auxiliary webbing, wherein the upper ring and the lower end of the elastic element are respectively connected to the upper and lower positions in the transportation vehicle, the main webbing passes through the upper ring, and the two side sections of the main webbing located on the upper ring are respectively a webbing front section and a webbing shoulder section, and the auxiliary webbing is located between the webbing front section and the webbing shoulder section; and

[0025] A webbing height adjuster is disposed below the upper ring and connected between the webbing shoulder section of the main webbing and the auxiliary webbing to form an upper positioning point capable of adjusting the height position. The webbing height adjuster comprises:

[0026] A main body, comprising a frame, and a webbing abutment portion and a webbing connection portion respectively formed on the upper and lower sections of the frame, a movable space for the auxiliary webbing to pass through is formed between the webbing abutment portion and the frame, and a main webbing channel for the shoulder section of the webbing to pass through is formed between the webbing connection portion and the frame;

[0027] A slider is movably mounted in the movable space of the main body and has an oblique channel for the auxiliary webbing to pass through;

[0028] an elastic member, which is installed between the slider and the main body and provides elastic force, so that the slider can clamp the auxiliary webbing relative to the webbing abutting portion of the main body; and

[0029] A shell can be movably mounted on the outer side of the main body up and down. The shell can be operated to cause the slider and the main body to have relative displacement to release the clamping state of the auxiliary webbing. When the shell is released, the elastic force of the elastic member can cause the slider and the main body to clamp the auxiliary webbing relative to each other.

[0030] Another technical solution proposed by the present invention is to provide a webbing height adjustment device, which is used in a seat belt system of a transportation vehicle and is connected to a main webbing extending from a webbing retractor in the seat belt system; the webbing height adjustment device comprises:

[0031] A shock-absorbing and buffering assembly, which can be installed in the transportation vehicle, and includes an auxiliary webbing, two elastic elements and an upper ring, wherein the two elastic elements are respectively connected to the upper end and the lower end of the auxiliary webbing, the upper ring is arranged at the upper end of the elastic element at the upper position, the upper ring and the lower end of the elastic element at the lower position are respectively connected to the upper and lower positions in the transportation vehicle, the main webbing passes through the upper ring, the two side sections of the main webbing located at the upper ring are respectively a webbing front section and a webbing shoulder section, and the auxiliary webbing is located between the webbing front section and the webbing shoulder section; and

[0032] A webbing height adjuster is disposed below the upper ring and connected between the webbing shoulder section of the main webbing and the auxiliary webbing to form an upper positioning point capable of adjusting the height position. The webbing height adjuster comprises:

[0033] A main body, comprising a frame, and a webbing abutment portion and a webbing connection portion respectively formed on the upper and lower sections of the frame, a movable space for the auxiliary webbing to pass through is formed between the webbing abutment portion and the frame, and a main webbing channel for the shoulder section of the webbing to pass through is formed between the webbing connection portion and the frame;

[0034] A slider is movably mounted in the movable space of the main body and has an oblique channel for the auxiliary webbing to pass through;

[0035] an elastic member, which is installed between the slider and the main body and provides elastic force, so that the slider can clamp the auxiliary webbing relative to the webbing abutting portion of the main body; and

[0036] A shell can be movably mounted on the outer side of the main body up and down. The shell can be operated to cause the slider and the main body to have relative displacement to release the clamping state of the auxiliary webbing. When the shell is released, the elastic force of the elastic member can cause the slider and the main body to clamp the auxiliary webbing relative to each other.

[0037] In the webbing height adjustment device as described above, an operating space is formed inside the upper section of the shell, and two abutting portions are respectively located on both sides below the operating space. The webbing abutting portion at the upper end of the main body can move up and down in the operating space of the shell, and the abutting portion is located below the webbing abutting portion. The shell that is pulled upward can push the webbing abutting portion of the main body with the abutting portion, so that the main body and the slider move relative to each other, and the shell can be operated to press downward against the slider, so that the main body and the slider move relative to each other.

[0038] In the webbing height adjustment device as described above, the two opposite sides of the main body are respectively a first side and a second side, the first side is located on the side of the main body facing away from the front section of the webbing, the webbing shoulder section of the main webbing and the auxiliary webbing respectively penetrate from the first side of the main body and pass out from the second side of the main body, and the webbing abutment portion has a webbing contact end at one end adjacent to the activity space; the slider includes a side plate portion, a side plate portion and an inter-plate connecting portion, the side plate portion is arranged at intervals from the side plate portion and is respectively located on the first side and the second side of the main body, the The inter-plate connecting portion is formed between the edge plate portion and the side plate portion and passes through the activity space of the main body. The oblique groove is arranged in the inter-plate connecting portion, and the oblique groove is obliquely penetrated from top to bottom from one end of the side plate portion adjacent to the webbing abutment portion toward one end of the side plate portion adjacent to the webbing connecting portion. The top end of the side plate portion is higher than the top end of the side plate portion and the upper end notch of the oblique groove. The end of the side plate portion adjacent to the oblique groove has a clamping surface, and the clamping surface can clamp the auxiliary webbing relative to the webbing contact end of the webbing abutment portion.

[0039] In the webbing height adjustment device as described above, a through hole and a group of connection holes located below the through hole are formed in the frame portion, the webbing abutment portion formed and covered on the upper section of the frame portion extends to a portion of the upper end of the through hole, and the activity space is formed between the through hole and the webbing abutment portion; the webbing connection portion is formed and covered on the lower section of the frame portion, and the webbing connection portion is combined with the group of connection holes of the frame portion to form the main webbing channel.

[0040] In the webbing height adjustment device as described above, the top of the webbing connection portion has an abutment surface extending to the lower section of the through hole, and the abutment surface of the webbing connection portion forms a limiting column, which protrudes laterally toward the frame portion, and there is a spacing between the limiting column and the abutment surface; the elastic member is an arc-shaped spring sheet that is lower in the middle and has two ends bent upward, the middle section of the arc-shaped spring sheet is located between the abutment surface of the webbing connection portion and the limiting column, and the two ends of the arc-shaped spring sheet respectively abut against the bottom of the side plate portion of the slider.

[0041] In the webbing height adjustment device as described above, the shell includes a back plate portion, an outer plate portion and an end plate portion, the back plate portion is located on the outer side of the second side of the main body and can abut against the top of the side plate portion, the outer plate portion is located on the outer side of the first side of the main body, the end plate portion is connected to the top of the back plate portion, the operating space is located below the end plate portion, and a webbing threading space is formed between the end plate portion and the outer plate portion, which is connected to the activity space from the first side of the main body, the end plate portion is located on the outer side of the webbing abutment portion of the main body, and there is an operating distance between the side of the end plate portion facing the operating space and the webbing abutment portion of the main body.

[0042] In the webbing height adjustment device as described above, the shell has a side wall on both sides of the back plate portion and the end plate portion, and the outer peripheral surface of the side wall forms a non-slip surface. The back plate portion of the shell forms a receiving groove, and the side plate portion of the slider can extend into the receiving groove.

[0043] In the webbing height adjustment device as described above, the casing forms a bridge portion on the outer plate portion, and there is a space between the bridge portion and the outer plate portion. The main webbing can pass through the space between the bridge portion and the outer plate portion and then pass through the main webbing channel of the main body.

[0044] The aforementioned webbing height adjustment device of the present invention is applied to the safety belt system of a transportation vehicle and has the following beneficial effects:

[0045] 1. Provide the function of adjusting the height position of the upper positioning point of the main webbing: The webbing height adjustment device of the present invention can be connected between the main webbing of the seat belt system and the auxiliary webbing of the shock-absorbing and buffering component by combining a shock-absorbing and buffering component installed in a transportation vehicle, so as to provide an upper positioning point whose height position can be manually adjusted for the occupants on the seats of the transportation vehicle.

[0046] 2. Provide shock-absorbing and buffering effect for occupants restrained on seats: The webbing height adjustment device of the present invention respectively sets the upper and lower ends of the shock-absorbing and buffering components at the upper and lower positions of the seat sides of the transportation vehicle, and the upper ring at the upper position is provided for the main webbing to pass through. The webbing height adjuster is connected between the main webbing of the seat belt system and the auxiliary webbing of the shock-absorbing and buffering component. The auxiliary webbing combined with the elastic element can provide shock-absorbing and buffering function to the main webbing restrained on the seat occupant through the webbing height adjuster.

[0047] 3. With automatic locking function and good stable positioning effect: The webbing height adjuster in the webbing height adjustment device of the present invention utilizes the slider under the elastic force to clamp the auxiliary webbing relatively with the webbing abutment part of the main body, and the elastic member maintains the continuous elastic force on the slider to ensure that the webbing height adjuster can be automatically locked on the auxiliary webbing for positioning. Moreover, when the occupant sits on the seat and correctly fastens the main webbing, the auxiliary webbing located below the upper ring is inserted between the webbing abutment part and the slider from one side of the main body, and comes out from the other side of the main body, and the elastic member pushes the slider and the webbing abutment part to clamp the auxiliary webbing relatively. Belt, after the webbing shoulder section of the main webbing passing through the upper ring passes through the main webbing channel in the webbing connecting part from one side of the main body and passes through the other side of the main body, the webbing shoulder section of the main webbing bends and is restrained on the seat occupant, and under the action of the webbing retractor on the winding force of the main webbing, the tension of the main webbing increases, and the tension of the auxiliary webbing is increased through the webbing height adjuster. Therefore, on the basis of the webbing height adjuster actively clamping and locking the auxiliary webbing, as the tension of the auxiliary webbing and the main webbing increases, the clamping and locking force of the main body and the slider of the webbing height adjuster on the auxiliary webbing can be further improved, thereby achieving a good and stable positioning effect.

[0048] 4. Easy to operate: After the webbing height adjuster of the present invention is connected between the main webbing and the auxiliary webbing and is located above the side of the seat occupant to form an upper positioning point, when adjusting the height position of the webbing height adjuster, the occupant on the seat only needs to hold the shell to press down the slider or apply force to the main body so that the slider and the main body overcome the elastic force of the elastic member and move relative to each other, thereby directly and easily releasing the clamping effect on the auxiliary webbing and sliding the webbing height adjuster along the main webbing and the auxiliary webbing to adjust the height position, so that it can be applied to the safety belt system to provide the seat occupants with good ease of operation.

[0049] 5. Possessing stepless height position adjustment function: The webbing height adjuster in the webbing height adjustment device of the present invention is connected between the main webbing and the auxiliary webbing, and the webbing height adjuster utilizes a slider under elastic force to relatively clamp the auxiliary webbing with the webbing abutment portion of the main body, while the main webbing can freely pass through the main webbing channel at the lower end of the main body of the webbing height adjuster, so that the webbing height adjuster can provide the seat occupant with free adjustment of the height position, and has stepless height position adjustment function.

[0050] 6. Ensure that the position of the webbing height adjuster remains unchanged when the occupant on the seat is under force: As mentioned above, the webbing height adjuster connected between the main webbing and the auxiliary webbing uses a slider under elastic force to clamp the auxiliary webbing relative to the webbing abutment part of the main body, so that the webbing height adjuster is actively locked to the auxiliary webbing position. The main webbing connected to the webbing retractor in the seat belt system can freely pass through the main webbing channel at the lower end of the main body of the webbing height adjuster. Therefore, when the occupant on the seat correctly fastens the main webbing, the webbing height adjuster is affected by the tension of the auxiliary webbing, which can make the webbing height adjuster clamp the auxiliary webbing, so that the position of the webbing height adjuster is fixed, and the clamping force of the webbing height adjuster on the auxiliary webbing will increase with the increase of the tension of the auxiliary webbing, so as to ensure that the height position of the webbing height adjuster remains unchanged.

[0051] 7. There is no need to readjust the position of the webbing height adjuster when the same occupant is sitting on the seat: As mentioned above, the webbing height adjuster connected between the main webbing and the auxiliary webbing uses a slider under elastic force to clamp the auxiliary webbing relative to the webbing abutment part of the main body. The main webbing connected to the webbing retractor in the seat belt system can freely pass through the main webbing channel of the main body of the webbing height adjuster. When the occupant leaves the seat, the main webbing is automatically retracted by the webbing retractor, and the position of the webbing height adjuster on the auxiliary webbing remains unchanged. Therefore, after the occupant on the seat adjusts the position of the webbing height adjuster, if no other occupant changes the position of the webbing height adjuster on the auxiliary webbing, the original occupant does not need to readjust the position of the webbing height adjuster when sitting on the seat again.

[0052] The webbing height adjustment device of the present invention can further utilize the bridge structure formed by the outer plate portion of the webbing height adjuster shell. The main webbing can pass between the bridge portion and the outer plate portion of the shell, and then be inserted into the main webbing channel of the main body. With the assistance of the bridge portion, the main webbing can be guided toward the webbing height adjuster to facilitate the movement of the main webbing. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a reference diagram of the use status of an embodiment of the webbing height adjustment device of the present invention applied to a safety belt system.

[0054] Figure 2 This is a reference diagram of another embodiment of the webbing height adjustment device of the present invention being used in a safety belt system.

[0055] FIG. 3A to FIG. 3D It is a schematic diagram of an embodiment of the auxiliary webbing and elastic element of the shock-absorbing and buffering assembly in the embodiment of the webbing height adjustment device of the present invention.

[0056] Figure 4 This is a reference diagram of another embodiment of the webbing height adjustment device of the present invention being used in a safety belt system.

[0057] Figure 5 This is a reference diagram of another embodiment of the webbing height adjustment device of the present invention being used in a safety belt system.

[0058] Figure 6 yes Figure 1 , Figure 2 , Figure 4 and Figure 5 A schematic three-dimensional appearance diagram of a webbing height adjuster in the webbing height adjustment device is shown.

[0059] Figure 7 yes Figure 1 , Figure 2 , Figure 4 and Figure 5 A schematic diagram of the three-dimensional appearance of the webbing height adjuster in the webbing height adjustment device shown in FIG.

[0060] Figure 8 yes Figure 6 and Figure 7 A side plan view schematic diagram of the webbing height adjuster shown.

[0061] Fig. 9 yes Figure 6 and Figure 7 A three-dimensional schematic diagram of a partially exploded housing of the webbing height adjuster is shown.

[0062] Fig.10 yes Figure 6 and Figure 7The illustrated schematic three-dimensional diagram of the webbing height adjuster from another perspective of the partially exploded casing.

[0063] Fig.11 yes Figure 6 , Figure 7 , Figures 9 and 10 The schematic diagram of the three-dimensional exploded view of the main body, slider and elastic member in the webbing height adjuster is shown.

[0064] Fig.12 yes Figure 6 , Figure 7 , Figures 9 and 10 A three-dimensional exploded schematic diagram of the main body, slider and elastic member in the webbing height adjuster from another perspective.

[0065] Fig.13 yes Figures 6 to 12 A three-dimensional schematic diagram of the frame portion in the main body shown.

[0066] Fig.14 yes Figures 6 to 12 A schematic side cross-sectional view of the webbing height adjuster shown.

[0067] Fig.15 yes Figure 8 The cross-sectional view of the embodiment of the webbing height adjuster is shown at the position of the cutting plane line AA.

[0068] Fig.16 yes Figure 6 The shown diagram is a three-dimensional diagram of a webbing height adjuster passing through a main webbing and an auxiliary webbing.

[0069] Fig.17 yes Figure 6 The diagram is a side cross-sectional view of a webbing height adjuster passing through a main webbing and an auxiliary webbing.

[0070] Fig.18 It is a three-dimensional appearance schematic diagram of another embodiment of the webbing height adjuster in the webbing height adjustment device of the present invention.

[0071] Fig.19 yes Fig.18 A schematic side cross-sectional view of the webbing height adjuster shown.

[0072] Fig. 20 yes Fig.18 The shown diagram is a three-dimensional diagram of a webbing height adjuster passing through a main webbing and an auxiliary webbing.

[0073] Fig.21 yes Fig.18 The diagram is a side cross-sectional view of the webbing height adjuster in a clamping state after the main webbing and the auxiliary webbing are passed through.

[0074] Fig. 22 yes Figure 1 , Figure 4 The reference schematic diagram shows the webbing height adjustment device in use in a clamping state.

[0075] Fig.23 yes Fig. 22 The diagram is a schematic diagram of the operation of the webbing height adjuster from another perspective when the height position is adjusted upward.

[0076] Fig.24A yes Fig. 22 The illustrated operation schematic diagram (I) of the side cross-section of the webbing height adjuster at the position of the cutting plane line BB when the height position is adjusted upward.

[0077] Fig. 24B yes Fig. 22 The schematic diagram (ii) of the operation of the side cross-section of the webbing height adjuster at the position of the cutting plane line CC when the height position is adjusted upward.

[0078] Fig.25 yes Fig. 22 The diagram is a schematic diagram of the operation of the webbing height adjuster in the downward height adjustment position from another perspective.

[0079] Fig.26 yes Fig.25 The illustrated diagram is a side cross-sectional operation diagram of the webbing height adjuster at the position of the cut plane line DD when the height position is adjusted downward.

[0080] Fig. 27 yes Fig. 22 The diagram (I) is a schematic diagram of another operation mode of adjusting the height position of the webbing height adjuster when the webbing height adjuster is relatively pressed.

[0081] Fig.28 yes Fig. 22 The diagram (ii) shows another operation mode in which the height position of the webbing height adjuster is adjusted by relative pressure.

[0082] Fig.29 yes Fig. 22 The schematic diagram (iii) shows another operation mode of adjusting the height position of the webbing height adjuster by relative pressure.

[0083] Fig.30 yes Figure 1 and Figure 4 Reference drawing of the webbing height adjuster shown with no occupant in the seat.

[0084] Brief description of the figures:

[0085] 1: Seat belt system

[0086] 1A: Main webbing

[0087] 1B: Webbing retractor

[0088] 1C: Connecting tongue

[0089] 1D: Seat buckle

[0090] 2: Auxiliary webbing assembly

[0091] 2A: Auxiliary webbing

[0092] 2B: Elastic element

[0093] 2C: Sheung Wan

[0094] 3:Webbing height adjuster

[0095] 30: Main body

[0096] 301: First side

[0097] 302: Second side

[0098] 31: Frame

[0099] 311:Through hole

[0100] 3111:Through hole base section

[0101] 3112: Extended hole section

[0102] 312: Assembly hole

[0103] 32: webbing contact part

[0104] 321: Activity Space

[0105] 322: Webbing contact end

[0106] 323: Chute

[0107] 33: Ribbon connection

[0108] 331: Main webbing channel

[0109] 332: abutment surface

[0110] 333: Limit column

[0111] 40: Slider

[0112] 41: Side panel

[0113] 411: Clamping surface

[0114] 412: Mounting slot

[0115] 42: Side panel

[0116] 43: Board connection

[0117] 44: Oblique groove

[0118] 50: Elastic parts

[0119] 51: Arc shrapnel

[0120] 511: Middle

[0121] 512:End

[0122] 60: Shell

[0123] 600: Operation space

[0124] 60A: Shell seat

[0125] 601A: Raised ribs

[0126] 60B: Shell cover

[0127] 601B rib

[0128] 60C: Top support

[0129] 61: Back panel

[0130] 611: receiving groove

[0131] 62: Outer plate

[0132] 63: End plate

[0133] 65: Side wall

[0134] 651: Anti-slip surface

[0135] 66: Bridge DETAILED DESCRIPTION

[0136] The following is a further description of the technical means adopted by the present invention to achieve the predetermined purpose of the invention with reference to the accompanying drawings and embodiments of the present invention.

[0137] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, several embodiments of the webbing height adjustment device of the present invention are disclosed in the implementation form of a seat belt system 1 at a seat of a transportation vehicle. The seat belt system 1 includes a webbing retractor 1B located on the side of the seat of the transportation vehicle adjacent to the vehicle pillar, and a main webbing 1A extending from the webbing retractor 1B. The main webbing 1A is a flexible component without elastic deformation. The webbing retractor 1B can automatically retract the main webbing 1A. The end of the main webbing 1A is fixed to the side of the seat or the lower position of the vehicle pillar. The main webbing 1A is provided with a connecting tongue 1C. The connecting tongue 1C can be disassembled and installed in a seat buckle 1D on the other side of the seat (i.e., the side away from the vehicle pillar). The seat belt system 1 is an existing product, and its specific structure is not repeated.

[0138] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the webbing height adjustment device of the present invention is used in the safety belt system 1 and is connected to the main webbing 1A. The webbing height adjustment device includes a shock-absorbing and buffering component 2 and a webbing height adjuster 3. The specific structures of the shock-absorbing and buffering component 2 and the webbing height adjuster 3 are respectively described below.

[0139] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the upper and lower ends of the shock-absorbing and buffering component 2 are respectively fixed in the vehicle and located on the side of the seat adjacent to the pillar. In the various embodiments disclosed in the figures, the upper and lower ends of the shock-absorbing and buffering component 2 are respectively fixed at the upper and lower positions of the pillars on the side of the seat of the vehicle, but the invention is not limited thereto. Basically, the shock-absorbing and buffering component 2 includes an auxiliary webbing 2A, at least one elastic element 2B and an upper ring 2C, wherein the elastic element 2B is connected to the auxiliary webbing 2A, the upper ring 2C is located at the top and connected to the auxiliary webbing 2A or the elastic element 2B, and the upper ring 2C can provide the main webbing 1A of the safety belt system 1 to pass through. The auxiliary webbing 2A is a flexible component without elastic deformation, the elastic element 2B is a component with elastic deformation characteristics, such as an elastic band, and can provide shock absorption and buffering performance, and the upper ring 2C is a component made of rigid material (such as iron metal material or other materials, etc.), which has the strength to support the main webbing 1A, the auxiliary webbing 2A and the elastic element 2B. Figure 1 , Figure 2 , Figure 4 and Figure 5 The disclosed embodiments are described in sequence.

[0140] like Figure 1 and Figure 2 In the embodiment shown, the shock-absorbing and buffering component 2 includes an auxiliary webbing 2A, at least one elastic element 2B and an upper ring 2C. The upper end of the auxiliary webbing 2A is connected to the upper ring 2C, and the upper ring 2C is connected to the upper section of the pillar on the side of the seat. The lower end of the auxiliary webbing 2A is fixedly connected to the pillar on the side of the seat and is located below the upper ring 2C. At least one flexure section 21A is formed in the auxiliary webbing 2A, and at least one elastic element 2B is arranged on one side of the flexure section 21A, or at least one elastic element 2B is respectively arranged on two opposite sides of the flexure section 21A. The upper end and the lower end of the elastic element 2B are respectively fixedly connected to the auxiliary webbing 2A at the upper and lower positions of the flexure section 21A. The number and setting positions of the flexure sections 21A are set according to actual product requirements.

[0141] At Figure 1 and Figure 3B In the disclosed embodiment, the lower section of the auxiliary webbing 2A has a flexure section 21A, and an elastic element 2B is provided on each of the two opposite sides of the flexure section 21A; Figure 2 and Figure 3B In the disclosed embodiment, the upper and lower sections of the auxiliary webbing 2A each have a flexure section, and an elastic element 2B is provided on opposite sides of each flexure section 21A, and the upper ring 2C provides a component through which the main webbing 1A is passed. Thus, when the auxiliary webbing 2A is subjected to force, the flexure section 21A is stretched, causing the elastic element 2B to produce elastic deformation to offset part of the force on the auxiliary webbing 2A, so that the shock absorbing and buffering assembly 2 can provide shock absorbing and buffering performance.

[0142] In addition to the aforementioned Figure 1 , Figure 2 and Figure 3B In the disclosed embodiment, in addition to the auxiliary webbing 2A being provided with an elastic element 2B on opposite sides of the flexure section 21A, Figure 3A As shown, the auxiliary webbing 2A may also be provided with an elastic element 2B on one side of the flexure section 21A; Figure 3C As shown, the auxiliary webbing 2A may be provided with one elastic element 2B on one side of the flexure section 21A, and two elastic elements 2B on the other side of the flexure section 21A; Figure 3D As shown, the auxiliary webbing 2A can be provided with two elastic elements 2B on opposite sides of the flexure section 21A, etc. The above various embodiments can provide shock-absorbing and buffering performance.

[0143] like Figure 4 In the embodiment shown, the shock-absorbing and buffering assembly 2 includes an auxiliary webbing 2A, an elastic element 2B and an upper ring 2C. The upper end of the auxiliary webbing 2A is connected to the upper ring 2C, the upper end of the elastic element 2B is connected to the lower end of the auxiliary webbing 2A, and the upper ring 2C is connected to the upper part of the pillar on the side of the seat. The lower end of the elastic element 2B is fixedly connected to the pillar on the side of the seat and is located below the upper ring 2C. The upper ring 2C provides the main webbing 1A for passing, so that when the auxiliary webbing 2A is subjected to force, the elastic element 2B is indirectly pulled to produce elastic deformation to offset part of the force on the auxiliary webbing 2A, so that the shock-absorbing and buffering assembly 2 can provide shock-absorbing and buffering performance. In the above, the elastic element 2B and the auxiliary webbing 2A can be directly sewn and fixed, or the elastic element 2B is combined with a connecting ring to connect the auxiliary webbing 2A.

[0144] like Figure 5In the embodiment shown, the shock-absorbing and buffering assembly 2 includes an auxiliary webbing 2A, two elastic elements 2B and an upper ring 2C. The two elastic elements 2B are respectively connected to the upper end and the lower end of the auxiliary webbing 2A. The upper end of the elastic element 2B located at the upper position is connected to the upper ring 2C, and the upper ring 2C is connected to the upper part of the pillar on the side of the seat. The lower end of the elastic element 2B located at the lower position is fixedly connected to the pillar on the side of the seat and is located below the upper ring 2C. The upper ring 2C provides the main webbing 1A for passing. When the auxiliary webbing 2A is subjected to force, the elastic element 2B is indirectly pulled to produce elastic deformation to offset part of the force on the auxiliary webbing, so that the shock-absorbing and buffering assembly 2 can provide shock-absorbing and buffering performance. In the above, the two elastic elements 2B and the auxiliary webbing 2A can be directly sewn and fixed or connected by a connecting ring.

[0145] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in the aforementioned embodiments, the main webbing 1A of the seat belt system 1 passes through the upper ring 2C located at the upper part of the pillar on the side of the seat, wherein the section of the main webbing 1A between the webbing retractor 1B and the upper ring 2C is defined as a webbing front section 11A, and the other side section of the main webbing 1A after passing through the upper ring 2C is defined as a webbing shoulder section 12A, and the webbing shoulder section 12A is used to obliquely restrain the section on the seat occupant, and the auxiliary webbing 2A of the shock-absorbing and buffering assembly 2 is located between the webbing front section 11A and the webbing shoulder section 12A of the main webbing 1A.

[0146] like Figures 6 to 10 As shown, the webbing height adjuster 3 is disposed below the upper ring 2C and connected between the webbing shoulder section 12A of the main webbing 1A and the auxiliary webbing 2A, forming an upper positioning point capable of adjusting the height position. The webbing height adjuster 3 comprises a main body 30, a slider 40, an elastic member 50 and a housing 60. The specific structure of each component of the webbing height adjuster 3 is described in detail below.

[0147] like Figures 11 to 13 As shown, the main body 30 has a frame portion 31, a webbing abutment portion 32 and a webbing connection portion 33. The two opposite sides of the main body 30 are respectively defined as a first side 301 and a second side 302. The frame portion 31 can be made of a rigid material, and the rigid material can be an iron-based metal material or other materials. A through hole 311 and a group of connection holes 312 located below the through hole 311 are formed in the frame portion 31. In this embodiment, the through hole 311 includes a through hole base section 3111 and an extended hole section 3112 disposed below and connected to the through hole base section 3111. The width of the through hole base section 3111 is greater than the width of the extended hole section 3112.

[0148] like Figures 9 to 12 and Fig.14 As shown, the webbing abutment portion 32 is formed of a plastic material and coated on the upper section of the frame portion 31. An activity space 321 is formed between the webbing abutment portion 32 and the through hole 311 of the frame portion 31. The activity space 321 provides a space for the auxiliary webbing 2A to pass through, and the webbing abutment portion 32 provides a position for the auxiliary webbing 2A to abut against. Preferably, the webbing abutment portion 32 is formed of a wear-resistant plastic material. In this embodiment, the lower end of the webbing abutment portion 32 extends into a part of the upper end of the through hole base section 3111, and the space between the bottom surface of the webbing abutment portion 32 and the bottom edge of the through hole base section 3111 of the through hole 311 is the activity space 321. The bottom end of the webbing abutment portion 32 adjacent to the activity space 321 is a webbing contact end 322, and the webbing contact end 322 is used as a position to contact the auxiliary webbing 2A.

[0149] like Figures 9 to 12 and Fig.14 As shown, the webbing connection part 33 is formed of a plastic material and is coated on the lower section of the frame part 31. The webbing connection part 33 is combined with the lower end of the frame part 31 having the assembly hole 312 to form a main webbing channel 331. The webbing connection part 33 is combined with the assembly hole 312 of the frame part 31 to form the main webbing channel 331. The main webbing channel 331 provides a passage for the main webbing 1A, and the webbing connection part 33 provides a position for the main webbing 1A to abut against. Preferably, the webbing connection part 33 is formed of a wear-resistant plastic material. The webbing connection part 33 forms an arc surface on both the upper wall and the lower wall of the main webbing channel 331, such as Fig.16 and Fig.17 As shown, the main webbing 1A can smoothly pass through the main webbing channel 331 and the main webbing 1A can bend and turn against the upper wall or the lower wall of the main webbing channel 331 .

[0150] like Fig.11 , Fig.12 and Fig.14 As shown, in this embodiment, the top of the webbing connection portion 33 has a contact surface 332 extending to the extended hole section 3112 of the through hole 311, and a limiting column 333 is formed on the contact surface 332 of the webbing connection portion 33. The limiting column 333 protrudes laterally toward the extended hole section 3112 of the frame portion 31, and there is a distance between the limiting column 333 and the contact surface 332.

[0151] like Figures 9 to 12 and Fig.14As shown, the slider 40 can be installed in the movable space 321 of the main body 30 so as to move up and down, and the slider 40 has an inclined groove 44, which can provide the auxiliary webbing 2A with a passage. The slider 40 can be combined with the webbing abutment portion 32 of the main body 30 to relatively clamp the auxiliary webbing 2A for positioning and move on the auxiliary webbing 2A.

[0152] like Figures 9 to 12 and Fig.14 As shown, in this embodiment, the slider 40 includes a side plate portion 41, a side plate portion 42 and an inter-plate connecting portion 43, the side plate portion 41 and the side plate portion 42 are arranged at intervals, the inter-plate connecting portion 43 is integrally formed between the side plate portion 41 and the side plate portion 42, and the oblique groove 44 is provided in the inter-plate connecting portion 43 and is inclined from top to bottom toward the bottom end direction of the side plate portion 42 and penetrates from top to bottom. Among them, when the slider 40 is installed in the activity space 321 of the main body 30, the side plate portion 41 and the side plate portion 42 are respectively located on the first side 301 and the second side 302 of the main body 30, the inter-plate connecting portion 43 is located in the activity space 321, and the top of the side plate portion 41 has a clamping surface 411, and the clamping surface 411 can clamp the auxiliary webbing 2A relative to the webbing contact end portion 322 of the webbing abutting portion 32 adjacent to the bottom end of the activity space 321.

[0153] In this embodiment, the top of the side plate portion 42 is higher than the top of the side plate portion 41 and the upper end notch of the oblique channel 44. The bottom of the side plate portion 41 may also form a mounting groove 412 extending upward. Fig.10 and Fig.12 In the illustrated embodiment, the webbing abutting portion 32 of the main body 30 forms a slide groove 323 on the second side 302 , and the side plate portion 42 of the slider 40 extends into the slide groove 323 and can move up and down.

[0154] like Figures 9 to 12 and Fig.14 As shown, the elastic member 50 is installed between the slider 40 and the top of the webbing connecting portion 33, and provides elastic force to the slider 40 and the main body 30, so that the slider 40 can clamp the auxiliary webbing 2A relative to the webbing abutment portion 32 of the main body 30 to position, and when the slider 40 is operated to lower the main body 30, or the main body 30 is operated to rise relative to the slider 40, the function of the slider 40 and the main body 30 to clamp the auxiliary webbing 2A relative to each other can be released, and the auxiliary webbing 2A is released, and the elastic member 50 is compressed to accumulate elastic energy.

[0155] The elastic member 50 may be a spring, a spring sheet or other equivalent elastic elements, and the number of the elastic members 50 may be increased according to actual needs. Figures 9 to 12 and Fig.14As shown, in this embodiment, the elastic member 50 uses an arc-shaped spring piece 51 that is lower in the middle and has two ends that are bent upward. The middle section 511 of the arc-shaped spring piece 51 abuts against the abutting surface 332 of the webbing connecting portion 33. The limiting column 333 is located above the middle section 511 of the arc-shaped spring piece 51 for limiting. The two ends of the arc-shaped spring piece 51 respectively abut against the bottom of the side plate portion 41 of the slider 40. Among them, the two ends of the arc-shaped spring piece 51 extend upward into the assembly groove 412 at the bottom of the side plate portion 41, and the two ends of the arc-shaped spring piece 51 abut against the two sides of the top wall of the assembly groove 412. In this way, the elastic member 50 can provide a balanced elastic force on both sides of the slider 40, so that the slider 40 and the main body 30 can move relatively smoothly.

[0156] like Figure 6 , Figure 7 , Fig.14 and Fig.15 As shown, the cover 60 is assembled on the outer side of the upper section of the main body 30, and the cover 60 can operate the slider 40 or the main body 30, so that the slider 40 or the main body 30 produces a relative displacement to release the clamping state of the auxiliary webbing 2A, thereby allowing the webbing height adjuster 3 to move up and down the main webbing 1A and the auxiliary webbing 2A to adjust the height position.

[0157] like Fig. 9 and Fig.10 As shown, in this embodiment, the housing 60 can be a component formed by a housing base 60A and a housing cover 60B which are relatively combined and fixed together, wherein the inner side surface of the housing base 60A and the inner side surface of the housing cover 60B respectively form a plurality of ribs 601A and 601B to enhance the mechanical strength of the housing base 60A and the housing cover 60B.

[0158] like Figures 6 to 9 , Fig.14 and Fig.15 As shown, an operation space 600 is formed inside the upper section of the cover 60, and two top abutting portions 60C are respectively located on both sides below the operation space 600. The webbing abutting portion 32 at the upper end of the main body 30 can move up and down in the operation space 600 of the cover 60. The top abutting portion 60C is located below the webbing abutting portion 32, so the cover 60 can be pulled up to push against the webbing abutting portion 32 of the main body 30 via the top abutting portion 60C, so that the main body 30 and the slider 40 move relative to each other. The bottom end of the cover 60 can also press downward against the side plate portion 42 of the slider 40, so that the main body 30 and the slider 40 move relative to each other.

[0159] like Figures 6 to 9 , Fig.14As shown, in this embodiment, the casing 60 includes a back plate portion 61, an outer plate portion 62 and an end plate portion 63. The back plate portion 61 is located on the side of the slider 40 having the side plate portion 42 (i.e., the second side 302 of the main body 30) and can be against the top of the side plate portion 42. The outer plate portion 62 is located on the outer side of the side plate portion 41 of the slider 40 (i.e., the first side 301 of the main body 30). The end plate portion 63 is connected to the top of the back plate portion 61. There is a webbing threading space between the end plate portion 63 and the top of the outer plate portion 62. The end plate portion 63 is provided with a space for passing a webbing. The portion 63 is located above the webbing abutment portion 32 of the main body 30. The auxiliary webbing 2A passes through the webbing threading space, the movable space 321 of the main body 30 and the oblique groove 44 of the slider 40 from the upper side of one side of the shell 60, and then extends downward from the other side of the shell 60. The auxiliary webbing 2A can be relatively clamped by the slider 40 and the main body 30 under the action of elastic force, and the main webbing 1A extends downward to the other side through the outer side of the outer plate portion 62 of the shell 60 through the main webbing channel 331 located in the webbing connection portion 33 of the main body 30.

[0160] like Fig.16 and Fig.17 As shown, in the state where the slider 40 and the main body 30 clamp the auxiliary webbing 2A relative to each other, the cover 60 naturally descends due to gravity and abuts against the top of the side plate portion 42 of the slider 40 pushed upward by the elastic member 50, and there is an operating spacing S between the bottom surface of the end plate portion 63 of the cover 60 and the top of the webbing abutting portion 32 of the main body 30. When the operating cover 60 is pressed downward against the slider 40, the slider 40 and the main body 30 can be relatively displaced by the distance of the operating spacing S, and the bottom surface of the end plate portion 63 of the cover 60 can touch the top of the webbing abutting portion 32 of the main body 30, limiting the relative displacement distance of the slider 40 and the main body 40, preventing the elastic member 50 from being deformed by excessive force, and maintaining the normal elastic force of the elastic member 50 between the slider 40 and the main body 30. On the other hand, the webbing contact portion 32 at the upper end of the main body 30 moves up and down in the operating space 600 of the cover 60 , and the top contact portion 60C is located below the webbing contact portion 32 to prevent the cover 60 from being separated from the main body 30 .

[0161] like Figure 6 and Figure 7 As shown, in this embodiment, the cover shell 60 has a side wall 65 on both sides of the back plate portion 61 and the end plate portion 63 connected to the top of the back plate portion 61, and the outer peripheral surface of the side wall 65 is formed with a non-slip surface 651 to facilitate the seat occupant to hold the cover shell 60 to operate the slider 40 and the main body 30 to produce relative displacement.

[0162] like Fig.14 As shown, in this embodiment, the bottom of the back plate portion 61 of the casing 60 may further form a receiving groove 611 , and the top end of the side plate portion 42 of the slider 40 may extend into the receiving groove 611 , ensuring that the casing 60 can directly drive the slider 40 .

[0163] like Figures 18 to 21 In another embodiment shown, the casing 60 may further form a bridge portion 66 on the outer plate portion 62, with a space between the bridge portion 66 and the outer plate portion 62, so that the main webbing 1A passes through the space between the bridge portion 66 and the outer plate portion 62, and then passes through the main webbing channel 331 located in the webbing connecting portion 33 of the main body 30, thereby utilizing the bridge portion 66 of the casing 60 to guide the main webbing 1A toward the direction of the webbing height adjuster 3.

[0164] When the webbing height adjustment device of the present invention is applied to a safety belt system 1 of a vehicle, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the auxiliary webbing 2A of the auxiliary webbing assembly 2 of the webbing height adjustment device of the present invention is located between the webbing front section 11A and the webbing shoulder section 12A of the main webbing 1A, and the webbing height adjuster 3 is installed below the upper ring 1C of the auxiliary webbing assembly 2 and connected between the webbing shoulder section 12A of the main webbing 1A and the auxiliary webbing 2A. The webbing height adjuster 3 is in a transverse shape due to gravity, and is used to form an upper positioning point above the shoulder of the seat occupant, and can provide the seat occupant with the height position of the upper positioning point according to his or her body shape, and the webbing height adjuster 3 is connected between the auxiliary webbing 2A and the main webbing 1A and has a stepless height position adjustment function. At the same time, the shock absorbing and buffering assembly 2 with an elastic element 2B provides a shock absorbing and buffering function to the main webbing 1A constrained on the seat occupant through the webbing height adjuster 3.

[0165] like Figure 1 , Figure 4 and Fig. 22As shown, the webbing height adjuster 3 is connected between the webbing shoulder section 12A of the main webbing 1A and the auxiliary webbing 2A. The auxiliary webbing 2A passes through the movable space 321 of the main body 30 and the oblique channel 44 of the slider 40 from the upper side of the casing 60, and then extends downward from the other side of the casing 60. The auxiliary webbing 2A can be clamped by the clamping surface 411 of the side plate portion 41 of the slider 40 pushed by the elastic member 50 and the webbing contact end portion 322 of the webbing abutment portion 32 of the main body 30, so that the webbing height adjuster 3 is fixed on the auxiliary webbing 2A, and the elastic force of the elastic member 50 on the slider 40 is used to maintain the position of the webbing height adjuster 3 clamped and fixed on the auxiliary webbing 2A. On the other hand, the webbing shoulder section 12A of the main webbing 1A after passing through the upper ring 2C of the auxiliary webbing assembly 2 extends from above the first side 301 of the main body 30 and from above one side of the shell 60 through the outer side of the outer plate portion 62, and then passes through the main webbing channel 331 in the webbing connecting portion 33 of the main body 30 and extends downward from the second side 302 of the main body 30, so that the webbing height adjuster 3 is connected between the webbing shoulder section 12A of the main webbing 1A and the auxiliary webbing 2A to form the upper positioning point.

[0166] In the above, the webbing height adjuster 3 is fixed on the auxiliary webbing 2A and maintained at a fixed position on the auxiliary webbing 2A. The main webbing 1A is pulled by the webbing height adjuster 3 and can pass freely through the webbing height adjuster 3. The webbing shoulder section 12A of the main webbing 1A can be bent through the bottom of the webbing connecting portion 33 and constrained to the shoulder and chest of the seat occupant, thereby reducing the discomfort of the seat occupant constrained by the main webbing 1A.

[0167] Regarding the operation method of the seat occupant adjusting the height position of the webbing height adjuster 3 connected between the main webbing 1A and the auxiliary webbing 2A (i.e. the height position of the upper positioning point), wherein;

[0168] like Figure 1 , Figure 4 , Fig. 22 , Fig.23 , Fig.24A and Fig. 24B As shown, when the webbing height adjuster 3 is adjusted upward, the seat occupant can hold the cover 60 and push the main body 30 upward, wherein the top abutting portion 60C of the cover 60 is used to push the webbing abutting portion 32 of the main body 30 upward, so that the main body 30 and the slider 40 produce relative movement to release the locking state of the auxiliary webbing 2A, and the height of the webbing height adjuster 3 can be easily adjusted upward along the auxiliary webbing 2A and the webbing shoulder section 12A of the main webbing 1A. After adjusting to the appropriate height position, the cover 60 is released, that is, the elastic force of the elastic member 50 pushes against the slider 40 and the main body 30, the state of clamping the auxiliary webbing 2A is restored, and the height position of the webbing height adjuster 3 is fixed, so that the webbing height adjuster 3 has good simplicity in operation.

[0169] like Figure 1 , Figure 4 , Fig. 22 , Fig.25 and Fig.26 As shown, when the height adjuster 3 is adjusted downward, the seat occupant holds the cover 60 and applies downward force to press the slider 40, wherein the cover 60 is used to press the side plate 42 of the slider 40, so that the slider 40 and the main body 30 produce relative movement to release the locking state of the auxiliary webbing 2A, and the height can be adjusted downward. After adjusting to an appropriate height position, the cover 60 is released, and the elastic force of the elastic member 50 pushes against the slider 40 and the main body 30, and the state of clamping the auxiliary webbing 2A is restored, and the height position of the webbing height adjuster 3 on the auxiliary webbing 2A and the webbing shoulder section 12A of the main webbing 1A is fixed.

[0170] like Figure 1 , Figure 4 , Fig. 22 , Figure 27 to Figure 29 As shown, in addition, the present invention can also adjust the height position of the webbing height adjuster 3 in other operating modes. When the webbing height adjuster 3 needs to be adjusted upward or downward, the seat occupant can also press the shell 60 and the main body 30 at the same time to make the slider 40 and the main body 30 relatively displaced and unlock the auxiliary webbing 2A, so that the auxiliary webbing 2A can smoothly pass between the slider 40 and the main body 30, so that the seat occupant can hold the webbing height adjuster 3 and adjust the height position upward or downward along the webbing shoulder section 12A of the auxiliary webbing 2A and the main webbing 1A. After adjusting the webbing height adjuster 3 to an appropriate height position, release the webbing height adjuster 3, that is, push the slider 40 and the main body 30 by the elastic member 50, restore the clamping state of the auxiliary webbing 2A, and fix the height position of the webbing height adjuster 3.

[0171] like Figure 1 , Figure 4 , Fig. 22As shown, when the occupant sits on the seat and correctly fastens the main webbing 1A, the auxiliary webbing 2A located below the upper ring 2C passes through the first side 301 of the main body 30 of the webbing height adjuster 3 between the webbing abutment portion 32 and the slider 40, and passes out from the second side 302 of the main body 40. The elastic member 50 pushes the slider 40 and the webbing abutment portion 32 to relatively clamp the auxiliary webbing 2A. The webbing shoulder section 12A of the main webbing 1A passing through the upper ring 2C can freely move from the first side 301 of the main body 30 to the main webbing channel 331 in the webbing connection portion 33 and pass out from the second side 302 of the main body 30. After passing through the webbing connection portion 33 of the main body 30, it bends and is constrained on the seat occupant. Under the action of the webbing retractor 1B on the main webbing 1A, the tension of the main webbing 1A increases. At the same time, the webbing shoulder section 12A of the main webbing 1A constrained on the seat occupant will increase the tension of the auxiliary webbing 2A through the webbing height adjuster 3. Therefore, on the basis of the webbing height adjuster 3 actively clamping and locking the auxiliary webbing 2A, as the tension of the auxiliary webbing 2A increases, the main body 30 and the slider 40 of the webbing height adjuster 3 can further increase the clamping and locking force of the auxiliary webbing 2A, thereby achieving a good and stable positioning effect, and the position of the webbing height adjuster 3 remains fixed.

[0172] like Fig.30 As shown, when there is no passenger on the seat of the transportation vehicle, the main webbing 1A of the unused safety belt system is automatically retracted by the webbing retractor 1B, and the webbing shoulder section 12A of the main webbing 1A directly passes through the main webbing channel 331 of the webbing height adjuster 3 and the upper ring 2C to be retracted and shortened in length. On the other hand, the webbing height adjuster 3 connected between the main webbing 1A and the auxiliary webbing 2A is pushed against the slider 40 and the main body 30 by the elastic member 50 to clamp the auxiliary webbing 2A to lock. state, so the height position of the webbing height adjuster 3 can be maintained. Therefore, when the occupant on the seat leaves the seat after adjusting the position of the webbing height adjuster 3, if no other occupant changes the position of the webbing height adjuster 3 on the auxiliary webbing 2A, when the same occupant sits on the seat again and fastens the main webbing 1A, the webbing shoulder section 12A of the main webbing 1A is stretched and obliquely constrained on the body of the seat occupant, and the webbing height adjuster 3 is still maintained at the previously set height position, and there is no need to readjust the height position of the webbing height adjuster 3.

[0173] The above description is only an embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as above by the embodiment, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A webbing height adjustment device, which is used in a seat belt system of a vehicle and is connected to a main webbing extending from a webbing retractor in the seat belt system; It is characterized in that The webbing height adjustment device comprises: A shock-absorbing and buffering assembly, which can be installed in the transportation vehicle, and includes an auxiliary webbing, an upper ring arranged at the upper end of the auxiliary webbing, and at least one elastic element connected to the auxiliary webbing, the upper ring and the lower end of the auxiliary webbing are respectively connected to the upper and lower positions in the transportation vehicle, the auxiliary webbing has at least one flexure section, the elastic element is located on the side of the flexure section, the upper end and the lower end of the elastic element are respectively fixed to the auxiliary webbing located above and below the flexure section, the main webbing passes through the upper ring, the two side sections of the main webbing located on the upper ring are respectively a webbing front section and a webbing shoulder section, and the auxiliary webbing is located between the webbing front section and the webbing shoulder section; and A webbing height adjuster is disposed below the upper ring and connected between the webbing shoulder section of the main webbing and the auxiliary webbing to form an upper positioning point capable of adjusting the height position. The webbing height adjuster comprises: A main body, comprising a frame, and a webbing abutment portion and a webbing connection portion respectively formed on the upper and lower sections of the frame, a movable space for the auxiliary webbing to pass through is formed between the webbing abutment portion and the frame, and a main webbing channel for the shoulder section of the webbing to pass through is formed between the webbing connection portion and the frame; A slider is movably mounted in the movable space of the main body and has an oblique channel for the auxiliary webbing to pass through; an elastic member, which is installed between the slider and the main body and provides elastic force, so that the slider can clamp the auxiliary webbing relative to the webbing abutting portion of the main body; and A shell can be movably mounted on the outer side of the main body up and down. The shell can be operated to cause the slider and the main body to have relative displacement to release the clamping state of the auxiliary webbing. When the shell is released, the elastic force of the elastic member can cause the slider and the main body to clamp the auxiliary webbing relative to each other.

2. The webbing height adjustment device according to claim 1, It is characterized in that The auxiliary webbing has a flexure section, which is located at the lower section of the auxiliary webbing. At least one elastic element is provided on one side or two opposite sides of the flexure section, and the upper end and the lower end of the elastic element are respectively connected to the upper and lower positions of the flexure section of the auxiliary webbing.

3. The webbing height adjustment device according to claim 1, It is characterized in that The auxiliary webbing has two flexure sections, which are respectively located at the upper section and the lower section of the auxiliary webbing. At least one elastic element is provided on one side or two opposite sides of each flexure section, and the upper end and the lower end of the elastic element are respectively connected to the upper and lower positions of the flexure section of the auxiliary webbing.

4. The webbing height adjustment device according to any one of claims 1 to 3, It is characterized in that An operating space is formed inside the upper section of the shell, and two abutting portions are respectively located on both sides below the operating space. The webbing abutting portion at the upper end of the main body can move up and down in the operating space of the shell, and the abutting portion is located below the webbing abutting portion. The shell that is pulled up can push the webbing abutting portion of the main body with the abutting portion, so that the main body and the slider move relative to each other, and the shell can be operated to press downward against the slider, so that the main body and the slider move relative to each other.

5. The webbing height adjustment device according to claim 4, It is characterized in that The two opposite sides of the main body are respectively a first side and a second side, the first side is located on the side of the main body facing away from the front section of the webbing, the webbing shoulder section of the main webbing and the auxiliary webbing respectively penetrate from the first side of the main body and pass out from the second side of the main body, and the webbing abutment portion has a webbing contact end portion at one end adjacent to the activity space; The slider includes a side plate portion, a side plate portion and an inter-plate connecting portion, the side plate portion and the side plate portion are arranged at intervals and are respectively located on the first side and the second side of the main body, the inter-plate connecting portion is formed between the side plate portion and the side plate portion and passes through the activity space of the main body, the oblique groove is arranged in the inter-plate connecting portion, and the oblique groove is obliquely penetrated from top to bottom from one end of the side plate portion adjacent to the webbing abutment portion toward one end of the side plate portion adjacent to the webbing connection portion, the top end of the side plate portion is higher than the top end of the side plate portion and the upper end notch of the oblique groove, and the end of the side plate portion adjacent to the oblique groove has a clamping surface, and the clamping surface can clamp the auxiliary webbing relative to the webbing contact end of the webbing abutment portion.

6. The webbing height adjustment device according to claim 5, It is characterized in that A through hole and a group of connection holes located below the through hole are formed in the frame portion, the webbing abutment portion formed and covered on the upper section of the frame portion extends to a portion of the upper end of the through hole, and the activity space is formed between the through hole and the webbing abutment portion; the webbing connection portion is formed and covered on the lower section of the frame portion, and the webbing connection portion is combined with the group of connection holes of the frame portion to form the main webbing channel.

7. The webbing height adjustment device according to claim 6, It is characterized in that The top of the webbing connection portion has an abutment surface extending to the lower section of the through hole, and the abutment surface of the webbing connection portion forms a limiting column, the limiting column protrudes laterally toward the frame portion, and there is a distance between the limiting column and the abutment surface; The elastic member is an arc-shaped spring sheet with a lower middle portion and two ends bent upward. The middle section of the arc-shaped spring sheet is located between the abutting surface of the webbing connecting portion and the limiting column, and the two ends of the arc-shaped spring sheet are respectively abutted against the bottom of the side plate portion of the slider.

8. The webbing height adjustment device according to claim 5, It is characterized in that The shell includes a back plate portion, an outer plate portion and an end plate portion, the back plate portion is located on the outer side of the second side of the main body and can abut against the top of the side plate portion, the outer plate portion is located on the outer side of the first side of the main body, the end plate portion is connected to the top of the back plate portion, the operation space is located below the end plate portion, and a webbing threading space is formed between the end plate portion and the outer plate portion, which is connected to the activity space from the first side of the main body, the end plate portion is located on the outer side of the webbing abutment portion of the main body, and there is an operation distance between the side of the end plate portion facing the operation space and the webbing abutment portion of the main body.

9. The webbing height adjustment device according to claim 8, It is characterized in that The sleeve shell has a side wall on both sides of the back plate part and the end plate part, and the outer peripheral surface of the side wall forms a non-slip surface. The back plate part of the sleeve shell forms a receiving groove, and the side plate part of the slider can extend into the receiving groove.

10. The webbing height adjustment device according to claim 8, It is characterized in that The casing forms a bridge portion on the outer plate portion, and a space is provided between the bridge portion and the outer plate portion. The main webbing can pass through the space between the bridge portion and the outer plate portion and then pass through the main webbing channel of the main body.

11. A webbing height adjustment device, which is used in a seat belt system of a vehicle and is connected to a main webbing extending from a webbing retractor in the seat belt system; It is characterized in that The webbing height adjustment device comprises: A shock-absorbing and buffering assembly, which can be installed in the transportation vehicle, and includes an auxiliary webbing, an upper ring connected to the upper end of the auxiliary webbing, and an elastic element connected to the lower end of the auxiliary webbing, wherein the upper ring and the lower end of the elastic element are respectively connected to the upper and lower positions in the transportation vehicle, the main webbing passes through the upper ring, and the two side sections of the main webbing located on the upper ring are respectively a webbing front section and a webbing shoulder section, and the auxiliary webbing is located between the webbing front section and the webbing shoulder section; and A webbing height adjuster is disposed below the upper ring and connected between the webbing shoulder section of the main webbing and the auxiliary webbing to form an upper positioning point capable of adjusting the height position. The webbing height adjuster comprises: A main body, comprising a frame, and a webbing abutment portion and a webbing connection portion respectively formed on the upper and lower sections of the frame, a movable space for the auxiliary webbing to pass through is formed between the webbing abutment portion and the frame, and a main webbing channel for the shoulder section of the webbing to pass through is formed between the webbing connection portion and the frame; A slider is movably mounted in the movable space of the main body and has an oblique channel for the auxiliary webbing to pass through; an elastic member, which is installed between the slider and the main body and provides elastic force, so that the slider can clamp the auxiliary webbing relative to the webbing abutting portion of the main body; and A shell can be movably mounted on the outer side of the main body up and down. The shell can be operated to cause the slider and the main body to have relative displacement to release the clamping state of the auxiliary webbing. When the shell is released, the elastic force of the elastic member can cause the slider and the main body to clamp the auxiliary webbing relative to each other.

12. The webbing height adjustment device according to claim 11, It is characterized in that An operating space is formed inside the upper section of the shell, and two abutting portions are respectively located on both sides below the operating space. The webbing abutting portion at the upper end of the main body can move up and down in the operating space of the shell, and the abutting portion is located below the webbing abutting portion. The shell that is pulled up can push the webbing abutting portion of the main body with the abutting portion, so that the main body and the slider move relative to each other, and the shell can be operated to press downward against the slider, so that the main body and the slider move relative to each other.

13. The webbing height adjustment device according to claim 12, It is characterized in that The two opposite sides of the main body are respectively a first side and a second side, the first side is located on the side of the main body facing away from the front section of the webbing, the webbing shoulder section of the main webbing and the auxiliary webbing respectively penetrate from the first side of the main body and pass out from the second side of the main body, and the webbing abutment portion has a webbing contact end portion at one end adjacent to the activity space; The slider includes a side plate portion, a side plate portion and an inter-plate connecting portion, the side plate portion and the side plate portion are arranged at intervals and are respectively located on the first side and the second side of the main body, the inter-plate connecting portion is formed between the side plate portion and the side plate portion and passes through the activity space of the main body, the oblique groove is arranged in the inter-plate connecting portion, and the oblique groove is obliquely penetrated from top to bottom from one end of the side plate portion adjacent to the webbing abutment portion toward one end of the side plate portion adjacent to the webbing connection portion, the top end of the side plate portion is higher than the top end of the side plate portion and the upper end notch of the oblique groove, and the end of the side plate portion adjacent to the oblique groove has a clamping surface, and the clamping surface can clamp the auxiliary webbing relative to the webbing contact end of the webbing abutment portion.

14. The webbing height adjustment device according to claim 13, It is characterized in that A through hole and a group of connection holes located below the through hole are formed in the frame portion, the webbing abutment portion formed and covered on the upper section of the frame portion extends to a portion of the upper end of the through hole, and the activity space is formed between the through hole and the webbing abutment portion; the webbing connection portion is formed and covered on the lower section of the frame portion, and the webbing connection portion is combined with the group of connection holes of the frame portion to form the main webbing channel.

15. The webbing height adjustment device according to claim 14, It is characterized in that The top of the webbing connection portion has an abutment surface extending to the lower section of the through hole, and the abutment surface of the webbing connection portion forms a limiting column, the limiting column protrudes laterally toward the frame portion, and there is a distance between the limiting column and the abutment surface; The elastic member is an arc-shaped spring sheet with a lower middle portion and two ends bent upward. The middle section of the arc-shaped spring sheet is located between the abutting surface of the webbing connecting portion and the limiting column, and the two ends of the arc-shaped spring sheet are respectively abutted against the bottom of the side plate portion of the slider.

16. The webbing height adjustment device according to claim 13, It is characterized in that The shell includes a back plate portion, an outer plate portion and an end plate portion, the back plate portion is located on the outer side of the second side of the main body and can abut against the top of the side plate portion, the outer plate portion is located on the outer side of the first side of the main body, the end plate portion is connected to the top of the back plate portion, the operation space is located below the end plate portion, and a webbing threading space is formed between the end plate portion and the outer plate portion, which is connected to the activity space from the first side of the main body, the end plate portion is located on the outer side of the webbing abutment portion of the main body, and there is an operation distance between the side of the end plate portion facing the operation space and the webbing abutment portion of the main body.

17. The webbing height adjustment device according to claim 16, It is characterized in that The sleeve shell has a side wall on both sides of the back plate part and the end plate part, and the outer peripheral surface of the side wall forms a non-slip surface. The back plate part of the sleeve shell forms a receiving groove, and the side plate part of the slider can extend into the receiving groove.

18. The webbing height adjustment device according to claim 16, It is characterized in that The casing forms a bridge portion on the outer plate portion, and a space is provided between the bridge portion and the outer plate portion. The main webbing can pass through the space between the bridge portion and the outer plate portion and then pass through the main webbing channel of the main body.

19. A webbing height adjustment device, which is used in a seat belt system of a vehicle and is connected to a main webbing extending from a webbing retractor in the seat belt system; It is characterized in that The webbing height adjustment device comprises: A shock-absorbing and buffering assembly, which can be installed in the transportation vehicle, and includes an auxiliary webbing, two elastic elements and an upper ring, wherein the two elastic elements are respectively connected to the upper end and the lower end of the auxiliary webbing, the upper ring is arranged at the upper end of the elastic element at the upper position, the upper ring and the lower end of the elastic element at the lower position are respectively connected to the upper and lower positions in the transportation vehicle, the main webbing passes through the upper ring, the two side sections of the main webbing located at the upper ring are respectively a webbing front section and a webbing shoulder section, and the auxiliary webbing is located between the webbing front section and the webbing shoulder section; and A webbing height adjuster is disposed below the upper ring and connected between the webbing shoulder section of the main webbing and the auxiliary webbing to form an upper positioning point capable of adjusting the height position. The webbing height adjuster comprises: A main body, comprising a frame, and a webbing abutment portion and a webbing connection portion respectively formed on the upper and lower sections of the frame, a movable space for the auxiliary webbing to pass through is formed between the webbing abutment portion and the frame, and a main webbing channel for the shoulder section of the webbing to pass through is formed between the webbing connection portion and the frame; A slider is movably mounted in the movable space of the main body and has an oblique channel for the auxiliary webbing to pass through; an elastic member, which is installed between the slider and the main body and provides elastic force, so that the slider can clamp the auxiliary webbing relative to the webbing abutting portion of the main body; and A shell can be movably mounted on the outer side of the main body up and down. The shell can be operated to cause the slider and the main body to have relative displacement to release the clamping state of the auxiliary webbing. When the shell is released, the elastic force of the elastic member can cause the slider and the main body to clamp the auxiliary webbing relative to each other.

20. The webbing height adjustment device according to claim 19, It is characterized in that An operating space is formed inside the upper section of the shell, and two abutting portions are respectively located on both sides below the operating space. The webbing abutting portion at the upper end of the main body can move up and down in the operating space of the shell, and the abutting portion is located below the webbing abutting portion. The shell that is pulled up can push the webbing abutting portion of the main body with the abutting portion, so that the main body and the slider move relative to each other, and the shell can be operated to press downward against the slider, so that the main body and the slider move relative to each other.

21. The webbing height adjustment device according to claim 20, It is characterized in that The two opposite sides of the main body are respectively a first side and a second side, the first side is located on the side of the main body facing away from the front section of the webbing, the webbing shoulder section of the main webbing and the auxiliary webbing respectively penetrate from the first side of the main body and pass out from the second side of the main body, and the webbing abutment portion has a webbing contact end portion at one end adjacent to the activity space; The slider includes a side plate portion, a side plate portion and an inter-plate connecting portion, the side plate portion and the side plate portion are arranged at intervals and are respectively located on the first side and the second side of the main body, the inter-plate connecting portion is formed between the side plate portion and the side plate portion and passes through the activity space of the main body, the oblique groove is arranged in the inter-plate connecting portion, and the oblique groove is obliquely penetrated from top to bottom from one end of the side plate portion adjacent to the webbing abutment portion toward one end of the side plate portion adjacent to the webbing connection portion, the top end of the side plate portion is higher than the top end of the side plate portion and the upper end notch of the oblique groove, and the end of the side plate portion adjacent to the oblique groove has a clamping surface, and the clamping surface can clamp the auxiliary webbing relative to the webbing contact end of the webbing abutment portion.

22. The webbing height adjustment device according to claim 21, It is characterized in that A through hole and a group of connection holes located below the through hole are formed in the frame portion, the webbing abutment portion formed and covered on the upper section of the frame portion extends to a portion of the upper end of the through hole, and the activity space is formed between the through hole and the webbing abutment portion; the webbing connection portion is formed and covered on the lower section of the frame portion, and the webbing connection portion is combined with the group of connection holes of the frame portion to form the main webbing channel.

23. The webbing height adjustment device according to claim 22, It is characterized in that The top of the webbing connection portion has an abutment surface extending to the lower section of the through hole, and the abutment surface of the webbing connection portion forms a limiting column, the limiting column protrudes laterally toward the frame portion, and there is a distance between the limiting column and the abutment surface; The elastic member is an arc-shaped spring sheet with a lower middle portion and two ends bent upward. The middle section of the arc-shaped spring sheet is located between the abutting surface of the webbing connecting portion and the limiting column, and the two ends of the arc-shaped spring sheet are respectively abutted against the bottom of the side plate portion of the slider.

24. The webbing height adjustment device according to claim 21, It is characterized in that The shell includes a back plate portion, an outer plate portion and an end plate portion, the back plate portion is located on the outer side of the second side of the main body and can abut against the top of the side plate portion, the outer plate portion is located on the outer side of the first side of the main body, the end plate portion is connected to the top of the back plate portion, the operation space is located below the end plate portion, and a webbing threading space is formed between the end plate portion and the outer plate portion, which is connected to the activity space from the first side of the main body, the end plate portion is located on the outer side of the webbing abutment portion of the main body, and there is an operation distance between the side of the end plate portion facing the operation space and the webbing abutment portion of the main body.

25. The webbing height adjustment device according to claim 24, It is characterized in that The sleeve shell has a side wall on both sides of the back plate part and the end plate part, and the outer peripheral surface of the side wall forms a non-slip surface. The back plate part of the sleeve shell forms a receiving groove, and the side plate part of the slider can extend into the receiving groove.

26. The webbing height adjustment device according to claim 24, It is characterized in that The casing forms a bridge portion on the outer plate portion, and a space is provided between the bridge portion and the outer plate portion. The main webbing can pass through the space between the bridge portion and the outer plate portion and then pass through the main webbing channel of the main body.

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