Braid height adjuster and braid height adjusting device

Abstract

The invention relates to a braid height adjuster and a braid height adjusting device, the braid height adjuster is used for a three-point safety belt system of a traffic carrier, a main body of the braid height adjuster is provided with a sliding block combined with an elastic piece, the sliding block under the elastic force effect can generate a relative clamping effect with the main body, and a sleeve shell is arranged on the outer side of the main body; the braid height adjusting device comprises an auxiliary braid assembly and a braid height adjuster, an upper ring at the upper end of an auxiliary braid of the auxiliary braid assembly and the lower end of the auxiliary braid are connected with the upper position and the lower position of one side of the seat respectively, and the braid height adjuster is connected between the auxiliary braid and a braid shoulder section, passing through the upper ring, of a main braid of the three-point safety belt system. An upper positioning point is formed on the main braid restraining the body of the seat passenger, the braid height adjuster locks the auxiliary braid, and the tension of the main braid is increased, so that the locking effect of the braid height adjuster on the auxiliary braid can be enhanced; and the slide block and the main body can be simply and conveniently operated to move relative to each other so as to unlock the auxiliary braid and adjust the height position of the braid height adjuster.

Description

Technical Field

[0001] The present invention relates to a three-point seat belt system for a vehicle, and more particularly to a webbing height adjuster and a webbing height adjustment device that can provide a height position adjustment function for the upper positioning point of the main webbing in the three-point seat belt system. Background Art

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

[0003] In the currently known three-point seat belt systems of vehicles, the webbing shoulder section where the main webbing obliquely abuts against the shoulder and chest of the seat occupant requires a considerable amount of tension to restrain the seat occupant. Moreover, generally speaking, in the three-point seat belt system of a vehicle, the height distance that can be adjusted by the upper ring on the upper section of the vehicle pillar on one side of the seat is limited. When the main webbing tightens the occupant's body on the seat, if the height position of the upper positioning point of the main webbing near the shoulder of the seat occupant cannot be properly adjusted, in an emergency, it may cause injuries such as the occupant's neck being cut by the main webbing. Therefore, a webbing height adjuster is required to be installed in cooperation with the upper ring on the upper section of the vehicle pillar on one side of the seat to provide the seat occupant with the ability to adjust the height position of the upper positioning point of the main webbing according to their body type, so as to ensure the safety of the three-point seat belt system for the seat occupant. As the safety of occupants such as drivers and passengers in vehicles is increasingly emphasized, the webbing height adjustment device of the three-point seat belt system has become an essential safety device.

[0004] The structure of the webbing height adjustment device of the existing three-point seat belt system is generally like the webbing adjustment device (WEBBING ADJUSTENT DEVICE) of US10654442B2. It includes an upper ring member, a movable frame plate, a moving member movably disposed in the movable frame plate, and an outer cover sleeved outside the movable frame plate. The upper ring member is installed above one side of the seat of the transportation vehicle. The main webbing connecting the webbing retractor in the three-point seat belt system passes through the movable frame or its connecting member and then passes through the upper ring member. The webbing shoulder section of the main webbing passes between the movable frame plate and the moving member. The tension of the main webbing can drive the relative movement of the movable frame plate and the moving member to clamp and lock the main webbing, forming an upper positioning point with an adjustable height position for the occupant on the seat. When the webbing adjustment device is not in use, it is hung on the upper ring member by the outer cover sleeved outside the movable frame plate.

[0005] The aforementioned known webbing adjustment device of the three-point seat belt system is connected between the front section of the webbing located between the webbing retractor and the upper ring member of the main webbing and the webbing shoulder section obliquely abutting against the shoulder and chest of the seat occupant, and can indeed achieve the purpose of adjusting the height position of the upper positioning point of the main webbing. However, this webbing height adjustment device passively clamps and locks the main webbing by restricting the tension of the main webbing on the seat occupant. Based on the fact that the webbing height adjustment device itself does not have an active clamping and locking function, when the tension of the main webbing on the webbing height adjuster decreases, the clamping force of the webbing height adjuster will decrease as the tension of the main webbing decreases, so that the webbing height adjuster can no longer be clamped and fixed on the main webbing, and the webbing height adjuster will slide and shift along the main webbing due to the action of gravity. Therefore, when there is no occupant using the three-point seat belt system on the seat, the webbing height adjuster will slide down to a lower position on one side of the seat. Therefore, before the occupant on the seat leaves the seat, it is usually necessary to use the outer cover of the webbing height adjuster to hang and position on the upper ring member of the vehicle pillar. The occupant on the seat must remove the webbing height adjuster from the upper ring member every time the main webbing is fastened, and re-adjust the height position of the webbing height adjuster on the main webbing, which has the problem of inconvenient operation in use. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a webbing height adjuster and a webbing height adjustment device to solve the problem of inconvenient operation when adjusting the height position of the upper positioning point of the existing webbing height mechanism used in the three-point seat belt system.

[0007] The technical solution proposed by the present invention is to provide a webbing height adjuster, which includes:

[0008] A main body, which includes a frame portion, and a webbing abutting portion and a webbing connecting portion respectively formed at the upper section and the lower section of the frame portion. An activity space is formed between the webbing abutting portion and the frame portion, and a webbing channel is formed between the webbing connecting portion and the frame portion;

[0009] A slider, which is movably installed in the moving space of the main body and has an inclined channel.

[0010] An elastic member, which is installed between the slider and the main body and provides an elastic force, so that the slider can generate a relative clamping force with the webbing abutting portion of the main body; and

[0011] A sleeve, which is movably sleeved on the outside of the main body. The sleeve can be operated to cause relative displacement between the slider and the main body to release the clamping state. When the sleeve is released, the elastic force of the elastic member can cause the slider and the main body to return to the relative clamping state.

[0012] In the webbing height adjuster as described above, an operation space is formed inside the upper section of the sleeve, and two abutting portions are respectively located on both sides below the operation space. The webbing abutting portion at the upper end of the main body can move up and down in the operation space of the sleeve. The abutting portions are located below the webbing abutting portion. The pulled-up sleeve can push against the webbing abutting portion of the main body with the abutting portions, so that the main body and the slider move relatively, and the sleeve can be operated to press down against the slider, so that the main body and the slider move relatively.

[0013] In the webbing height adjuster as described above, the two opposite sides of the main body are respectively a first side and a second side. One end of the webbing abutting portion adjacent to the moving space has a webbing contact end portion, and the webbing contact end portion is located on the first side of the main body; the slider includes a side plate portion, a side board portion and a connection portion between the plates. The side plate portion and the side board portion are arranged at intervals and are respectively located on the first side and the second side of the main body. The connection portion between the plates is formed between the side plate portion and the side board portion and passes through the moving space of the main body. The inclined channel is arranged in the connection portion between the plates, and the inclined channel is inclined and penetrates from top to bottom from one end of the side plate portion adjacent to the webbing abutting portion towards one end of the side board portion adjacent to the webbing connection portion. The top end of the side board portion is higher than the top end of the side plate portion and the upper end notch of the inclined channel. One end of the side plate portion adjacent to the inclined channel has a clamping surface, and the clamping surface faces the webbing contact end portion of the webbing abutting portion.

[0014] In the webbing height adjuster as described above, a through hole and a set of connection holes located below the through hole are formed in the frame portion. A part of the webbing abutting portion formed on the upper section of the frame portion extends to the upper end of the through hole. The moving space is formed between the through hole and the webbing abutting portion; the webbing connection portion is formed and coated on the lower section of the frame portion, and the webbing connection portion combines with the set of connection holes of the frame portion to form the webbing channel.

[0015] In the webbing height adjuster as described above, the top of the webbing connecting portion has an abutting surface extending to the lower section of the through hole, and the abutting surface of the webbing connecting portion forms a limiting post which protrudes laterally towards the frame portion. There is a spacing between the limiting post and the abutting surface. The elastic member is an arc-shaped elastic sheet with a lower middle part and upwardly curved ends. The middle section of the arc-shaped elastic sheet is located between the abutting surface of the webbing connecting portion and the limiting post, and the two end portions of the arc-shaped elastic sheet respectively abut against the bottom of the side plate portion of the slider.

[0016] In the webbing height adjuster as described above, the housing includes a back plate portion, an outer plate portion, and an end plate portion. The back plate portion is located outside the second side of the main body and can abut against the top of the side plate portion. The outer plate portion is located outside the first side of the main body. The end plate portion is connected to the top end of the back plate portion. The operation space is located below the end plate portion. A webbing threading space communicating with the activity space from the first side of the main body is formed between the end plate portion and the outer plate portion. The end plate portion is located outside the webbing abutting portion of the main body, and there is an operation spacing between the side surface of the end plate portion facing the operation space and the webbing abutting portion of the main body.

[0017] In the webbing height adjuster as described above, the housing has side walls on both sides of the back plate portion and the end plate portion. The outer peripheral surfaces of the side walls all form an anti-slip surface. The back plate portion of the housing forms a receiving groove, and the side plate portion of the slider can extend into the receiving groove.

[0018] In the webbing height adjuster as described above, the housing forms a bridge portion on the outer plate portion, and there is a space between the bridge portion and the outer plate portion.

[0019] Another technical solution proposed by the present invention is: to provide a webbing height adjustment device which is used in a three-point seat belt system of a transportation vehicle and is connected to a main webbing extending from a webbing retractor in the three-point seat belt system. The webbing height adjustment device includes:

[0020] An auxiliary webbing assembly which can be installed in the transportation vehicle and has an auxiliary webbing and an upper ring provided at the upper end of 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 main webbing passes through the upper ring. The two side sections of the main webbing located on both sides of the upper ring are a webbing front section and a webbing shoulder section respectively. The auxiliary webbing is located between the webbing front section and the webbing shoulder section; and

[0021] A webbing height adjuster which is provided below the upper ring and is 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 includes:

[0022] A main body, which includes a frame portion, and a webbing abutting portion and a webbing connecting portion respectively formed on the upper and lower segments of the frame portion. An activity space for the auxiliary webbing to pass through is formed between the webbing abutting portion and the frame portion, and a main webbing channel for the webbing shoulder segment to pass through is formed in the frame portion and the webbing connecting portion;

[0023] A slider, which is movably installed in the activity space of the main body up and down, and has an inclined channel for the auxiliary webbing to pass through;

[0024] An elastic member, which is installed between the slider and the main body and provides an elastic force to enable the slider to relatively clamp the auxiliary webbing with the webbing abutting portion of the main body; and

[0025] A sleeve, which is movably sleeved on the outside of the main body up and down. The sleeve can be operated to cause relative displacement between the slider and the main body to release the clamping state of the auxiliary webbing. When the sleeve is released, the elastic force of the elastic member can enable the slider to relatively clamp the auxiliary webbing with the main body.

[0026] In the webbing height adjustment device as described above, an operation space is formed inside the upper segment of the sleeve, and two abutting portions are respectively located on both sides below the operation space. The webbing abutting portion at the upper end of the main body can move up and down in the operation space of the sleeve. The abutting portions are located below the webbing abutting portion. The pulled-up sleeve can push against the webbing abutting portion of the main body with the abutting portions to cause relative movement between the main body and the slider, and the sleeve can be operated to press against the slider downward to cause relative movement between the main body and the slider.

[0027] 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 webbing shoulder segment of the main webbing and the auxiliary webbing respectively penetrate into the main body from the first side of the main body and penetrate out from the second side of the main body. One end of the webbing abutting portion adjacent to the activity space has a webbing contact end portion; the slider includes a side plate portion, a side board portion and a connection portion between the plates. The side plate portion and the side board portion are arranged at intervals and are respectively located on the first side and the second side of the main body. The connection portion between the plates is formed between the side plate portion and the side board portion and passes through the activity space of the main body. The inclined channel is arranged in the connection portion between the plates, and the inclined channel is inclined and penetrates from the upper end to the lower end from one end of the side plate portion adjacent to the webbing abutting portion to the end of the side board portion adjacent to the webbing connecting portion. The top end of the side board portion is higher than the top end of the side plate portion and the upper end notch of the inclined channel. One end of the side plate portion adjacent to the inclined channel has a clamping surface, and the clamping surface can relatively clamp the auxiliary webbing with the webbing contact end portion of the webbing abutting portion.

[0028] In the webbing height adjustment device as described above, a through hole and a set of connection holes located below the through hole are formed in the frame portion. The webbing abutting portion formed in the upper section of the frame portion extends to a part of the upper end of the through hole, and an activity space is formed between the through hole and the webbing abutting portion. The webbing connecting portion is formed and wrapped around the lower section of the frame portion, and the webbing connecting portion combines with the set of connection holes of the frame portion to form the main webbing channel.

[0029] In the webbing height adjustment device as described above, the top of the webbing connecting portion has an abutting surface extending to the lower section of the through hole, and a limiting post is formed on the abutting surface of the webbing connecting portion. The limiting post protrudes laterally towards the frame portion, and there is a spacing between the limiting post and the abutting surface. The elastic member is an arc-shaped elastic piece with a lower middle and upwardly curved ends. The middle section of the arc-shaped elastic piece is located between the abutting surface of the webbing connecting portion and the limiting post, and the two ends of the arc-shaped elastic piece respectively abut against the bottom of the side plate portion of the slider.

[0030] In the webbing height adjustment device as described above, the housing includes a back plate portion, an outer plate portion, and an end plate portion. The back plate portion is located outside the second side of the main body and can abut against the top of the side plate portion. The outer plate portion is located outside the first side of the main body. The end plate portion is connected to the top end of the back plate portion. The operation space is located below the end plate portion. A webbing threading space communicating with the activity space from the first side of the main body is formed between the end plate portion and the outer plate portion. The end plate portion is located outside the webbing abutting portion of the main body, and there is an operation spacing between the side of the end plate portion facing the operation space and the webbing abutting portion of the main body.

[0031] In the webbing height adjustment device as described above, the housing has a side wall on each of the two sides of the back plate portion and the end plate portion. A non-slip surface is formed on the outer peripheral surface of the side wall. A receiving groove is formed in the back plate portion of the housing, and the side plate portion of the slider can extend into the receiving groove.

[0032] In the webbing height adjustment device as described above, a bridge portion is formed on the outer plate portion of the housing. There is a space between the bridge portion and the outer plate portion, and the main webbing can pass through the space between the bridge portion and the outer plate portion and then through the main webbing channel of the main body.

[0033] Through the invention of the overall composition structure of the foregoing webbing height adjuster and webbing height adjustment device, the present invention has the following beneficial effects when applied to the three-point seat belt system of a vehicle:

[0034] 1. Provide the function of adjusting the height position of the upper positioning point of the main webbing: The webbing height adjuster and the webbing height adjustment device of the present invention can be installed in a vehicle and connected to the main webbing of the three-point seat belt system. The webbing height adjuster is connected between the webbing shoulder section of the main webbing and the auxiliary webbing of the auxiliary webbing assembly. The main webbing connected to the webbing retractor can freely pass through the webbing height adjuster. Therefore, when the occupant on the seat correctly fastens the main webbing, in addition to providing safety protection for the seat occupant, the main webbing connected to the webbing retractor provides an upper positioning point with a manually adjustable height position for the occupant on the vehicle seat through the webbing height adjuster.

[0035] 2. Have an automatic locking function and a good stable positioning effect: The webbing height adjuster of the present invention uses a slider under the action of elastic force to relatively clamp the auxiliary webbing with the webbing abutting portion of the main body. Under the action of the elastic member to continuously apply elastic force to the slider, it is ensured that the webbing height adjuster can be automatically locked in place on the auxiliary webbing. Moreover, when the occupant sits on the seat and correctly fastens the main webbing, since the auxiliary webbing located below the upper ring passes through between the webbing abutting portion and the slider from one side of the main body and exits from the other side of the main body, the elastic member pushes the slider to relatively clamp the auxiliary webbing with the webbing abutting portion. After the webbing shoulder section of the main webbing passing through the upper ring passes through the main webbing channel in the webbing connecting portion from one side of the main body and exits from the other side of the main body, the webbing shoulder section of the main webbing bends and is constrained on the body of the seat occupant. And under the action of the retracting force of the webbing retractor on 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 that the webbing height adjuster actively clamps and locks 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, achieving a good stable positioning effect.

[0036] 3. Have the simplicity of operation: After the webbing height adjuster of the present invention is connected between the webbing shoulder section of the main webbing and the auxiliary webbing and forms an upper positioning point above one side of the seat occupant, when adjusting the height position of the webbing height adjuster, the occupant on the seat only needs to hold the housing and 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 relatively displace, and can directly and easily release the clamping action on the auxiliary webbing, and slide the webbing height adjuster along the main webbing and the auxiliary webbing to adjust the height position, making it applicable to the three-point seat belt system and providing good simplicity of operation for the seat occupant.

[0037] 4. Have a stepless height position adjustment function: The webbing height adjuster of the present invention is connected between the webbing shoulder section of the main webbing and the auxiliary webbing of the auxiliary webbing assembly. The webbing height adjuster relatively clamps the auxiliary webbing by a slider under elastic force and the webbing abutting portion of the main body. The main webbing can freely pass through the main webbing channel at the lower end of the main body of the webbing height adjuster, enabling the webbing height adjuster to provide a freely adjustable height position above the seat occupant's side and having a stepless height position adjustment function.

[0038] 5. Ensure that the position of the webbing height adjuster remains unchanged when the occupant on the seat is under force: As described above, the webbing height adjuster connected between the webbing shoulder section of the main webbing and the auxiliary webbing of the auxiliary webbing assembly relatively clamps the auxiliary webbing by a slider under elastic force and the webbing abutting portion of the main body, so that the webbing height adjuster is actively locked in position on the auxiliary webbing. The main webbing connected to the webbing retractor in the three-point 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, in addition to providing safety protection for the seat occupant, the main webbing connected to the webbing retractor, under the tension of the auxiliary webbing, can further make the webbing height adjuster clamp the auxiliary webbing, keeping the position of the webbing height adjuster fixed. Moreover, the clamping force of the webbing height adjuster on the auxiliary webbing will increase with the increase of the tension of the auxiliary webbing to ensure that the height position of the webbing height adjuster remains unchanged.

[0039] 6. When the same occupant sits on the seat, there is no need to readjust the position of the webbing height adjuster: As described above, the webbing height adjuster connected between the webbing shoulder section of the main webbing and the auxiliary webbing of the auxiliary webbing assembly relatively clamps the auxiliary webbing by a slider under elastic force and the webbing abutting portion of the main body, fixing the webbing height adjuster above one side of the seat occupant. The main webbing connected to the webbing retractor in the three-point seat belt system freely passes 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 retracted main webbing freely passes through the webbing height adjuster, and the position of the webbing height adjuster on the auxiliary webbing remains unchanged. Therefore, when 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, then when the original occupant sits on the seat again, there is no need to readjust the position of the webbing height adjuster.

[0040] The webbing height adjuster of the present invention can further utilize the bridge structure formed by the outer plate portion of the sleeve housing. The main webbing can pass between the bridge portion and the outer plate portion of the sleeve housing and then pass through the main webbing channel of the main body. With the assistance of the bridge portion, it guides the main webbing in the direction close to the webbing height adjuster to facilitate the movement of the main webbing. Description of the Drawings

[0041] Figure 1 It is a three-dimensional external view schematic diagram of an embodiment of the webbing height adjuster of the present invention.

[0042] Figure 2 It is Figure 1 A three-dimensional external view schematic diagram of another perspective of the shown embodiment of the webbing height adjuster.

[0043] Figure 3 It is Figure 1 A side view plane schematic diagram of the shown embodiment of the webbing height adjuster.

[0044] Figure 4 It is Figure 1 and Figure 2 A three-dimensional schematic diagram of the shown embodiment of the webbing height adjuster with a partially disassembled housing.

[0045] Figure 5 It is Figure 1 and Figure 2 A three-dimensional schematic diagram of another perspective of the shown embodiment of the webbing height adjuster with a partially disassembled housing.

[0046] Figure 6 It is Figure 1 , Figure 2 , Figure 4 and Figure 5 A three-dimensional exploded schematic diagram of the main body, slider and elastic member in the shown embodiment of the webbing height adjuster.

[0047] Figure 7 It is Figure 1 , Figure 2 , Figure 4 and Figure 5 A three-dimensional exploded schematic diagram of another perspective of the main body, slider and elastic member in the shown embodiment of the webbing height adjuster.

[0048] Figure 8 It is Figure 1 , Figure 2 , Figure 4 and Figure 5 A three-dimensional schematic diagram of the frame part in the shown main body.

[0049] Figure 9 It is Figure 1 , Figure 2 , Figure 4 and Figure 5 A side view sectional schematic diagram of the shown embodiment of the webbing height adjuster.

[0050] Figure 10 It is Figure 3 A sectional schematic diagram of the shown embodiment of the webbing height adjuster at the position of cutting plane line A-A.

[0051] Figure 11 It is Figure 1Schematic perspective view of two webbing sections passing through the webbing height adjuster according to an embodiment of the present invention as shown.

[0052] Figure 12 Is Figure 1 Schematic side sectional view of two webbing sections passing through the webbing height adjuster according to an embodiment of the present invention as shown.

[0053] Figure 13 Schematic perspective view of the external appearance of another embodiment of the webbing height adjuster according to the present invention.

[0054] Figure 14 Is Figure 13 Schematic side sectional view of the webbing height adjuster according to the embodiment as shown.

[0055] Figure 15 Is Figure 13 Schematic perspective view of two webbing sections passing through the webbing height adjuster according to the embodiment as shown.

[0056] Figure 16 Is Figure 13 Schematic side sectional view of two webbing sections passing through the webbing height adjuster according to the embodiment as shown.

[0057] Figure 17 Schematic plan view of an embodiment of the webbing height adjustment device according to the present invention applied to a three-point seat belt system.

[0058] Figure 18 Is Figure 17 Reference view of the usage state of the webbing height adjuster shown in the clamped state.

[0059] Figure 19 Is Figure 17 And Figure 18 Schematic view of the operation of the webbing height adjuster shown in another perspective when adjusting the height upward.

[0060] Figure 20A Is Figure 18 Schematic view of the operation of the side sectional view of the webbing height adjuster at the position of cutting plane line B - B when adjusting the height upward (one).

[0061] Figure 20B Is Figure 18 Schematic view of the operation of the side sectional view of the webbing height adjuster at the position of cutting plane line C - C when adjusting the height upward (two).

[0062] Figure 21 Is Figure 18 Schematic view of the operation of the webbing height adjuster shown in another perspective when adjusting the height downward.

[0063] Figure 22 Is Figure 21Schematic diagram of the operation of the webbing height adjuster shown in the side view section at the cutting line D-D when adjusting the height position downward.

[0064] Figure 23 is Figure 17 and Figure 18 Schematic diagram (I) of another operation method when the webbing height adjuster shown is relatively pressed to adjust the height position.

[0065] Figure 24 is Figure 17 and Figure 18 Schematic diagram (II) of another operation method when the webbing height adjuster shown is relatively pressed to adjust the height position.

[0066] Figure 25 is Figure 17 and Figure 18 Schematic diagram (III) of another operation method when the webbing height adjuster shown is relatively pressed to adjust the height position.

[0067] Figure 26 is Figure 17 and Figure 18 Reference diagram of the webbing height adjuster shown when there is no occupant on the seat.

[0068] Brief description of the reference numerals in the figures:

[0069] 1: Three-point seat belt system 1A: Main webbing

[0070] 11A: Front section of the webbing 12A: Shoulder section of the webbing

[0071] 1B: Webbing retractor 1C: Connecting tongue

[0072] 1D: Seat buckle

[0073] 2: Auxiliary webbing assembly 2A: Auxiliary webbing

[0074] 2B: Upper ring

[0075] 3: Webbing height adjuster 30: Body

[0076] 301: First side 302: Second side

[0077] 31: Frame part 311: Through hole

[0078] 3111: Base section of the through hole 3112: Extended hole section

[0079] 312: Assembly hole 32: Webbing abutting part

[0080] 321: Activity space 322: Webbing contact end

[0081] 323: Slide groove 33: Webbing connection part

[0082] 331: Webbing channel 332: Contact surface

[0083] 333: Positioning post

[0084] 40: Slide block 41: Side plate part

[0085] 411: Clamping surface 412: Assembly groove

[0086] 42: Side board part 43: Connection part between boards

[0087] 44: Oblique channel

[0088] 50: Elastic part 51: Arc-shaped elastic piece

[0089] 511: Middle section 512: End part

[0090] 60: Housing 600: Operating space

[0091] 60A: Housing base 601A: Rib

[0092] 60B: Housing cover 601B: Rib

[0093] 60C: Top abutting part

[0094] 61: Back board part 611: Accommodating groove

[0095] 62: Outer board part 63: End board part

[0096] 65: Side wall 651: Anti-slip surface

[0097] 66: Bridge part

[0098] S: Operating distance Detailed implementation manner

[0099] The following, in conjunction with the accompanying drawings and the embodiments of the present invention, further elaborates on the technical means adopted by the present invention to achieve the predetermined invention purpose.

[0100] According to the foregoing invention content, the present invention includes a webbing height adjuster and a webbing height adjustment device, both of which are used in the three-point seat belt system of the seat of a vehicle. The following, in conjunction with the drawings, respectively describes the specific composition structures of the webbing height adjuster and the webbing height adjustment device of the present invention.

[0101] As Figures 1 to 5As shown, it discloses an embodiment of the webbing height adjuster of the present invention. The composition structure of the webbing height adjuster 3 includes 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 will be described in detail below.

[0102] As Figures 6 to 7 shown, the main body 30 includes a frame portion 31, a webbing abutting portion 32 and a webbing connecting portion 33 formed on the upper and lower sections of the frame portion 31 respectively. An activity space 321 is formed between the webbing abutting portion 32 and the frame portion 31, and a webbing passage 331 is formed in the frame portion 31.

[0103] As Figures 4 to 7 and Figure 9 shown, in this embodiment, the 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 a component made of a rigid material, and the rigid material can be selected from iron-based metal materials or other materials. A through hole 311 and a set of connecting holes 312 located below the through hole 311 are formed in the frame portion 31. The through hole 311 includes a through hole base section 3111 and an extended hole section 3112 communicated with and located below 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.

[0104] As Figure 11 and Figure 12 shown, the activity space 321 and the webbing passage 331 of the main body 30 can provide a webbing section a and a webbing section b at two different positions in the three-point seat belt system to pass through respectively. Among them, the webbing section a passes through the activity space 321 from the first side 301 of the main body 30 to the second side 302 of the main body 30, and the webbing section b passes through the webbing passage 331 from the first side 301 of the main body 30 to the second side 302 of the main body 30.

[0105] As Figures 4 to 7 , Figure 9 and Figure 12As shown, the webbing abutting 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 abutting portion 32 and the through hole 311 of the frame portion 31. The activity space 321 provides a space for the webbing section a to pass through, and the webbing abutting portion 32 provides a portion for the webbing section a to abut and contact. Preferably, the webbing abutting portion 32 is formed of a wear-resistant plastic material. In this embodiment, the lower end of the webbing abutting portion 32 extends into a part of the upper end of the through hole base section 3111. The activity space 321 is between the bottom surface of the webbing abutting portion 32 and the bottom edge of the through hole base section 3111 of the through hole 311. The bottom end of the webbing abutting portion 32 adjacent to the activity space 321 is a webbing contact end portion 322, and the webbing contact end portion 322 is used as the portion for contacting the webbing section a.

[0106] As Figures 4 to 7 and Figure 9 shown, the webbing connecting portion 33 is formed of a plastic material and coated on the lower section of the frame portion 31. The webbing connecting portion 33 combines with the frame portion 31 having the assembly hole 312 at the lower end to form a webbing passage 331. The webbing connecting portion 33 combines with the assembly hole 312 of the frame portion 31 to form the webbing passage 331. As Figure 11 and Figure 12 shown, the webbing passage 331 provides a passage for the webbing section b, and the webbing connecting portion 33 provides a portion for the webbing section b to abut and contact. Preferably, the webbing connecting portion 33 is formed of a wear-resistant plastic material. The upper wall surface and the lower wall surface of the webbing connecting portion 33 in the webbing passage 331 are both formed with arc-shaped surfaces to facilitate the smooth passage of the webbing section b through the webbing passage 331 and the bending and turning of the webbing section b against the upper wall surface or the lower wall surface of the webbing passage 331.

[0107] As Figure 6 , Figure 7 and Figure 9 shown, in this embodiment, the top of the webbing connecting portion 33 has an abutting surface 332 extending to the extending hole section 3112 of the through hole 311. A limiting post 333 is formed on the abutting surface 332 of the webbing connecting portion 33. The limiting post 333 laterally protrudes towards the extending hole section 3112 of the frame portion 31. There is a spacing between the limiting post 333 and the abutting surface 332.

[0108] As Figures 4 to 7 , Figure 9 and Figure 12As shown, the slider 40 is movably mounted up and down in the main body 30 and has an inclined channel 44. In this embodiment, the slider 40 is movably mounted up and down in the activity space 321 of the main body 30, and the inclined channel 44 of the slider 40 can provide passage for the webbing section a. The slider 40 can cooperate with the webbing abutting portion 32 of the main body 30 to relatively clamp and position the webbing section a and move on the webbing section a.

[0109] As Figures 4 to 7 and Figure 9 shown, in this embodiment, the slider 40 includes a side plate portion 41, a side plate portion 42 and an inter-plate connection portion 43. The side plate portion 41 and the side plate portion 42 are arranged at intervals. The inter-plate connection portion 43 is integrally formed between the side plate portion 41 and the side plate portion 42. The inclined channel 44 is arranged in the inter-plate connection portion 43 and is inclined from top to bottom towards the bottom end of the side plate portion 42 and penetrates up and down. Among them, when the slider 40 is mounted 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 connection portion 43 is located in the activity space 321, and the top of the side plate portion 41 has a clamping surface 411. As Figure 12 shown, the clamping surface 411 can relatively clamp the webbing section a with the webbing contact end 322 of the webbing abutting portion 32 adjacent to the bottom end of the activity space 321.

[0110] In this embodiment, as Figure 7 shown, the top end of the side plate portion 42 is higher than the top end of the side plate portion 41 and the upper slot opening of the inclined channel 44. The bottom of the side plate portion 41 may further form an assembly groove 412 extending upwards. As Figure 5 shown in the embodiment, a sliding groove 323 is formed on the second side 302 of the webbing abutting portion 32 of the main body 30, and the side plate portion 42 of the slider 40 extends into the sliding groove 323 and can move up and down.

[0111] As Figure 4 , Figure 5 , Figure 9 and Figure 12As shown, the elastic member 50 is disposed between the slider 40 and the main body 30 and provides an elastic force, enabling the slider 40 to generate a relative clamping force against the webbing abutting portion 32 of the main body 30. In this embodiment, the elastic member 50 is disposed between the slider 40 and the top of the webbing connecting portion 33, and provides an elastic force to the slider 40 and the main body 30, enabling the slider 40 to relatively clamp the webbing section a with the webbing abutting portion 32 of the main body 30 for positioning. When the slider 40 is operated to descend relative to the main body 30, or the main body 30 is operated to ascend relative to the slider 40, the effect of the slider 40 and the main body 30 relatively clamping the webbing section a can be released to release the webbing section a, and the elastic member 50 is compressed to accumulate elastic energy. On the other hand, when the tension of the webbing section a increases, the clamping force of the slider 40 and the main body 30 on the webbing section a can be enhanced to clamp it more tightly.

[0112] The elastic member 50 can be selected from a spring, a spring sheet or other equivalent elastic elements, and the number of the elastic members 50 can be increased according to actual needs. As Figures 4 to 7 and Figure 9 shown, in this embodiment, the elastic member 50 is selected as an arc-shaped spring sheet 51 with a lower middle part and upwardly curved arc-shaped ends. The middle section 511 of the arc-shaped spring sheet 51 abuts against the abutting surface 332 of the webbing connecting portion 33, and the limiting post 333 is located above the middle section 511 of the arc-shaped spring sheet 51 for limiting. The two ends of the arc-shaped spring sheet 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 sheet 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 sheet 51 abut against both sides of the top wall of the assembly groove 412. Thereby, the elastic member 50 can provide balanced elastic forces on both sides of the slider 40, enabling the slider 40 and the main body 30 to relatively move smoothly.

[0113] As Figure 1 、 Figure 2 、 Figure 9 and Figure 12 shown, the housing 60 can be sleeved on the outside of the main body 30 in a vertically movable manner. The housing 60 can be operated to cause a relative displacement between the slider 40 and the main body 30 to release the clamping state of the webbing section a. When the housing 60 is released, the elastic force of the elastic member 50 can cause the slider 40 and the main body 30 to return to the state of relatively clamping the webbing section a. In this embodiment, the housing 60 is assembled on the outer side of the upper section of the main body 30, and the housing 60 can operate the slider 40 or the main body 30 to cause a relative displacement between the slider 40 and the main body 30 to release the clamping state of the webbing section a, so that the webbing height adjuster 3 can move up and down between the webbing section a and the webbing section b to adjust the height position.

[0114] As Figure 4 and Figure 5As shown, in this embodiment, the housing 60 can be a component formed by opposing and fixedly connecting a housing base 60A and a housing cover 60B. Among them, the inner sides of the housing base 60A and the housing cover 60B respectively form a plurality of convex ribs 601A and 601B to strengthen the mechanical strength of the housing base 60A and the housing cover 60B.

[0115] As Figure 4 , Figure 9 and Figure 10 shown, an operation space 600 is formed inside the upper section of the housing 60, and two abutting parts 60C are respectively located on both sides below the operation space 600. The webbing abutting part 32 at the upper end of the main body 30 can move up and down in the operation space 600 of the housing 60. The abutting part 60C is located below the webbing abutting part 32. Therefore, the housing 60 can be pulled up to push against the webbing abutting part 32 of the main body 30 through the abutting part 60C, causing the main body 30 and the slider 40 to move relative to each other. The bottom end of the housing 60 can also press downward against the side plate part 42 of the slider 40, causing the main body 30 and the slider 40 to move relative to each other.

[0116] As Figures 1 to 3 , Figure 6 , Figure 7 and Figure 9 shown, in this embodiment, the housing 60 includes a back plate part 61, an outer plate part 62, and an end plate part 63. The back plate part 61 is located on the side of the slider 40 with the side plate part 42 (i.e., the second side 302 of the main body 30) and can abut against the top of the side plate part 42. The outer plate part 62 is located outside the side plate part 41 of the slider 40 (i.e., the first side 301 of the main body 30). The end plate part 63 is connected to the top end of the back plate part 61. There is a webbing threading space between the top ends of the end plate part 63 and the outer plate part 62. The end plate part 63 is located above the webbing abutting part 32 of the main body 30. As Figures 9 to 12 shown, the webbing section a passes through the webbing threading space, the moving space 321 of the main body 30, and the inclined channel 44 of the slider 40 from above one side of the housing 60, and then extends downward from the other side of the housing 60. The webbing section a can be relatively clamped by the slider 40 and the main body 30 under the action of elastic force. The webbing section b extends downward toward the other side through the webbing channel 331 in the webbing connecting part 33 of the main body 30 on the outside of the outer plate part 62 of the housing 60.

[0117] As Figure 12 and Figure 9 , Figure 10As shown, when the slider 40 and the main body 30 relatively clamp the webbing section a, the housing 60 naturally descends due to gravity and abuts against the top of the side plate portion 42 of the slider 40 that is pushed upward by the elastic member 50. There is an operating gap S between the bottom surface of the end plate portion 63 of the housing 60 (i.e., the side surface of the end plate portion 63 facing the operating space 600) and the top of the webbing abutting portion 32 of the main body 30. Thus, when the housing 60 is pressed downward against the slider 40, the slider 40 and the main body 30 can relatively displace a distance of the operating gap S, and the bottom surface of the end plate portion 63 of the housing 60 can touch the top of the webbing abutting portion 32 of the main body 30, restricting the relative displacement distance between 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 abutting portion 32 at the upper end of the main body 30 moves up and down in the operating space 600 of the housing 60, and the abutting portion 60C is located below the webbing abutting portion 32 for limiting, which can prevent the housing 60 from separating from the main body 30.

[0118] As Figure 1 and Figure 2 shown, in this embodiment, the housing 60 has a side wall 65 on each of the two sides of the back plate portion 61 and the end plate portion 63 connected to the top end of the back plate portion 61. An anti-slip surface 651 is formed on the outer peripheral surface of the side wall 65 to facilitate the seat occupant to hold the housing 60 and operate the slider 40 and the main body 30 to produce relative displacement.

[0119] As Figure 9 shown, in this embodiment, a receiving groove 611 can further be formed at the bottom of the back plate portion 61 of the housing 60, and the top end of the side plate portion 42 of the slider 40 can extend into the receiving groove 611 to ensure that the housing 60 can directly drive the slider 40.

[0120] As Figures 13 to 16 shown in another embodiment, the housing 60 can further form a bridge portion 66 on the outer plate portion 62. There is a space between the bridge portion 66 and the outer plate portion 62, enabling the webbing section b to pass through the space between the bridge portion 66 and the outer plate portion 62, and then through the webbing channel 331 in the webbing connecting portion 33 of the main body 30, so as to use the assistance of the bridge portion 66 of the housing 60 to guide the direction of the webbing section b close to the webbing height adjuster 3.

[0121] The webbing height adjuster 3 of the present invention, through the above overall composition structure, can be installed in a vehicle and combined with a three-point seat belt system, and is connected between two different webbing sections a and b below the upper ring above the side of the seat in the three-point seat belt system. The webbing height adjuster 3 is used to form an upper positioning point for adjusting the height position of the occupant on the seat. In this embodiment, the two different webbing sections a and b can be each a webbing section in two different webbings. For example: the webbing shoulder section of the main webbing in the three-point seat belt system and a webbing section in an auxiliary webbing.

[0122] Regarding the usage situation of the above-mentioned webbing height adjuster 3 in the three-point seat belt system, basically, it is the same as the usage situation of the webbing height adjustment device of the present invention applied to the three-point seat belt system. Therefore, please refer to the following description for its usage situation, and it will not be elaborated here first.

[0123] As Figure 17 shown, regarding the webbing height adjustment device of the present invention used in the seat belt system of a vehicle, basically, the seat belt system is a three-point seat belt system 1. The three-point seat belt system 1 includes a webbing retractor 1B located on the side of the seat of the vehicle adjacent to the vehicle pillar, and a main webbing 1A extending from the webbing retractor 1B. The main webbing 1A is a flexible long strip-shaped 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 below the vehicle pillar. A connection tongue 1C is provided on the main webbing 1A, and the connection tongue 1C can be detachably installed in a seat buckle 1D on the other side of the seat (i.e., the side away from the vehicle pillar). The three-point seat belt system 1 is an existing product, and its specific structure will not be elaborated.

[0124] As Figure 17 shown, the webbing height adjustment device of the present invention includes an auxiliary webbing assembly 2 and a webbing height adjuster 3. The specific structures of the auxiliary webbing assembly 2 and the webbing height adjuster 3 will be described below respectively.

[0125] As Figure 17 shown, the auxiliary webbing assembly 2 is installed on the side of the seat in the vehicle adjacent to the vehicle pillar. The auxiliary webbing assembly 2 has an auxiliary webbing 2A and an upper ring 2B provided at the upper end of the auxiliary webbing 2A, and the upper ring 2B and the lower end of the auxiliary webbing 2A are respectively connected to the upper and lower positions in the vehicle. Among them, the upper ring 2B is located at the upper section of the vehicle pillar on one side of the seat. The main webbing 1A passes through the upper ring 2B and forms two webbing sections on both sides of the upper ring 2B. The auxiliary webbing 2A is located between the two webbing sections of the main webbing 1A.

[0126] Furthermore, please refer to Figure 17, when the occupant on the seat fastens the main webbing 1A, the main webbing 1A is obliquely placed from top to bottom in front of the shoulder and chest of the body, and then the connecting tongue piece 1C on the main webbing 1A is inserted into the seat buckle 1D on the other side of the seat. Another webbing section of the main webbing 1A extends through the connecting tongue piece 1C to the side of the seat adjacent to the webbing retractor 1B, so that the main webbing 1A is horizontally placed across the waist and abdomen of the seat occupant, forming a three-point seat belt system 1. By means of the main webbing 1A of the three-point seat belt system 1, the body of the occupant can be restrained on the seat. Among them, the webbing section of the main webbing 1A between the webbing retractor 1B and the upper loop 2 is defined as a front webbing section 11A. After the main webbing 1A passes through the upper loop 2, another webbing section that can obliquely restrain the shoulder and chest of the seat occupant is defined as a shoulder webbing section 12A. The front webbing section 11A and the shoulder webbing section 12A are respectively located on different sides of the upper loop 2, and the auxiliary webbing 2A is located between the front webbing section 11A and the shoulder webbing section 12A.

[0127] The specific composition and structure of the webbing height adjuster 3 of the present invention have been described above and will not be elaborated here. It should be further noted that as Figure 17 , Figure 18 shown, the webbing height adjuster 3 of the three-point seat belt system 1 of the present invention is connected between the shoulder webbing section 12A of the main webbing 1A and the auxiliary webbing 2A, and forms an upper positioning point capable of adjusting the height position above one side of the seat occupant. Among them, the shoulder webbing section 12A of the main webbing 1A passes through the webbing channel 331 located in the webbing connecting portion 33 and the frame portion 31 from the first side 301 of the main body 30, and then passes out from the second side 302 of the main body 30. The auxiliary webbing 2A passes through the movable space 321 located between the webbing abutting portion 32 and the frame portion 31 from the first side 301 of the main body 30, and passes through the inclined channel 44 of the slider 40 that moves up and down in the movable space 321 of the main body 30, and then passes out from the second side 302 of the main body 30. Among them, by means of the elastic member 50 installed between the slider 40 and the main body 30 to provide elastic force, the slider 40 can relatively clamp the auxiliary webbing 2A with the webbing abutting portion 32 of the main body 30, so that the webbing height adjuster 3 is fixed on the auxiliary webbing 2A. The housing 60 of the webbing height adjuster 3 can be operated to cause relative displacement between the slider 40 and the main body 30 to release the clamping state of the auxiliary webbing 2A, so that the webbing height adjuster 3 can adjust the height position; when the housing 60 is released, the elastic force of the elastic member 50 can cause the slider 40 to relatively clamp the auxiliary webbing 2A with the main body 30.

[0128] As Figure 17 and Figure 18As shown, when the occupant on the seat correctly fastens the main webbing, the main webbing 1A connected to the webbing retractor 1B freely passes through the webbing height adjuster 3. Therefore, the main webbing 1A maintains the function of providing safety protection for the seat occupant. The webbing height adjuster 3 is located below the upper loop 2 and forms an upper positioning point capable of adjusting the height position above the side of the seat occupant. By changing the webbing height adjuster 3, the webbing shoulder section 12A of the main webbing 1A is obliquely constrained at the shoulder and chest of the seat occupant, and at the same time, it is fixed to the auxiliary webbing 2A by the webbing height adjuster 3. The webbing shoulder section 12A of the main webbing 1A freely passes through the webbing height adjuster 3. The webbing shoulder section 12A of the main webbing 1A can be bent at the bottom of the webbing connection part 33 and constrained at the shoulder and chest of the seat occupant, reducing the discomfort of the seat occupant constrained by the main webbing 1A.

[0129] Regarding the operation method for the seat occupant to adjust the height position of the webbing height adjuster 3 (i.e., the height position of the upper positioning point) between the webbing shoulder section 12A connected to the auxiliary webbing 2A and the main webbing 1A, as Figure 17 、 Figure 18 shown, in the state where the main body 30 and the slider 40 clamped the auxiliary webbing 2A under the elastic force of the elastic member 50 and are integrated, the tension of the webbing shoulder section 12A passing through the webbing channel 331 of the main body 30 acts on the main body 30, and the housing 60 is movably sleeved on the outside of the main body 30. As Figure 18 、 Figure 19 、 Figure 20A and Figure 20B shown, when the webbing height adjuster 3 is adjusted upward in height, the seat occupant can hold the housing 60 and push it upward against the main body 30. Among them, use the top portion 60C of the housing 60 to push upward against the webbing contact portion 32 of the main body 30, so that the main body 30 and the slider 40 generate relative movement to release the locked state of the auxiliary webbing 2A, and then 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, release the housing 60, that is, push the slider 40 and the main body 30 by the elastic force of the elastic member 50 to restore the state of clamping the auxiliary webbing 2A, and fix the height position of the webbing height adjuster 3, making the operation of the webbing height adjuster 3 have good simplicity.

[0130] As Figure 18 、 Figure 21 and Figure 22As shown, when the webbing height adjuster 3 is lowered in height, the seat occupant holds the housing 60 and presses it downward against the slider 40. By using the housing 60 to press against the side plate portion 42 of the slider 40, relative movement is generated between the slider 40 and the main body 30 to release the locked state of the auxiliary webbing 2A, and thus the height can be adjusted downward. After adjusting to an appropriate height position, release the housing 60, and the slider 40 and the main body 30 are pushed by the elastic force of the elastic member 50 to restore the state of clamping the auxiliary webbing 2A, so that the webbing height adjuster 3 is fixed at the height position on the webbing shoulder section 12A of the auxiliary webbing 2A and the main webbing 1A.

[0131] As Figure 18 , Figures 23 to 25 shown, the present invention can also adjust the height position of the webbing height adjuster 3 in other operation modes. When it is necessary to adjust the webbing height adjuster 3 upward or downward, the seat occupant can also hold the webbing height adjuster 3 and press the housing 60 and the main body 30 simultaneously, causing relative displacement between the slider 40 and the main body 30 and unlocking the auxiliary webbing 2A, so that the auxiliary webbing 2A can smoothly pass between the slider 40 and the main body 30, facilitating the seat occupant to 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, and the slider 40 and the main body 30 are pushed by the elastic force of the elastic member 50 to restore the locked state of clamping the auxiliary webbing 2A and fix the height position of the webbing height adjuster 3.

[0132] As Figure 17 and Figure 18As shown, when an occupant is sitting on the seat of a vehicle and properly buckled up with the main webbing 1A of the three-point seat belt system 1, the auxiliary webbing 2A between the front webbing section 11A and the shoulder webbing section 12A of the main webbing 1A passes through between the webbing abutting portion 32 and the slider 40 on the first side 301 of the body 30 of the webbing height adjuster 3 and exits from the second side 302 of the body 40. The elastic member 50 is used to push the slider 40 and the webbing abutting portion 32 to relatively clamp the auxiliary webbing 2A. The shoulder webbing section 12A of the main webbing 1A passing through the upper loop 2C can freely pass through the webbing channel 331 in the webbing connecting portion 33 on the first side 301 of the body 30 and exit from the second side 302 of the body 30. The shoulder webbing section 12A of the main webbing 1A can be bent and constrained on the occupant of the seat after bypassing the webbing connecting portion 33 of the body 30. Under the action of the retracting force of the webbing retractor 1B on the main webbing 1A, the tension of the main webbing 1A increases. At the same time, the shoulder webbing section 12A of the main webbing 1A constrained on the occupant of the seat will increase the tension of the auxiliary webbing 2A through the webbing height adjuster 3. Therefore, on the basis that the webbing height adjuster 3 actively clamps and locks the auxiliary webbing 2A, as the tension of the auxiliary webbing 2A increases, the clamping and locking force of the body 30 of the webbing height adjuster 3 and the slider 40 on the auxiliary webbing 2A can be further increased by the tension, achieving a good stable positioning effect and keeping the position of the webbing height adjuster 3 fixed and unchanged.

[0133] As Figure 26 shown, when there is no occupant on the seat of the vehicle, the main webbing 1A in the unused three-point seat belt system 1 is retracted automatically by the webbing retractor 1B, causing the shoulder webbing section 12A of the main webbing 1A to naturally slide over the webbing height adjuster 3 and the upper loop 2B and be retracted to shorten the length. On the other hand, the webbing height adjuster 3 connected between the main webbing 1A and the auxiliary webbing 2A uses the elastic member 50 to push against the slider 40 and the body 30 to relatively clamp the auxiliary webbing 2A to the locked state. The webbing height adjuster 3 can maintain its original height position. 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 main webbing 1A, when the same occupant sits on the seat again and buckles up with the main webbing 1A, the shoulder webbing section 12A of the main webbing 1A is stretched and obliquely constrained on the occupant of the seat, and the webbing height adjuster 3 still maintains the previously set height position without the need to readjust the height position of the webbing height adjuster 3.

[0134] The above are only embodiments of the present invention and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed as above by way of examples, it is not intended to limit the present invention. Any person skilled in the relevant art can, without departing from the technical solution of the present invention, make some modifications or variations to the above-disclosed technical content to obtain equivalent embodiments. However, any simple modifications, equivalent variations and modifications made to the above embodiments based on 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 adjuster, characterized in that, it comprises: a main body including a frame portion, a webbing abutting portion and a webbing connecting portion formed on the upper and lower sections of the frame portion respectively. An activity space is formed between the webbing abutting portion and the frame portion, and a webbing channel is formed between the webbing connecting portion and the frame portion; a slider movably mounted in the activity space of the main body up and down and having an inclined channel; an elastic member mounted between the slider and the main body and providing elastic force to enable the slider to generate a relative clamping force with the webbing abutting portion of the main body; and a housing movably sleeved on the outside of the main body up and down. The housing can be operated to cause relative displacement between the slider and the main body to release the clamping state, and when the housing is released, the elastic force of the elastic member can cause the slider and the main body to return to the relative clamping state.

2. The webbing height adjuster according to claim 1, characterized in that, an operation space is formed inside the upper section of the housing, and two abutting portions are respectively located on both sides below the operation space. The webbing abutting portion at the upper end of the main body can move up and down in the operation space of the housing. The abutting portions are located below the webbing abutting portion. The pulled-up housing can push against the webbing abutting portion of the main body with the abutting portions to cause relative movement between the main body and the slider, and the housing can be operated to press against the slider downward to cause relative movement between the main body and the slider.

3. The webbing height adjuster according to claim 2, characterized in that, the two opposite sides of the main body are a first side and a second side respectively. One end of the webbing abutting portion adjacent to the activity space has a webbing contact end portion located on the first side of the main body; the slider includes a side plate portion, a side board portion and a connection portion between the plates. The side plate portion and the side board portion are arranged at intervals and are respectively located on the first side and the second side of the main body. The connection portion between the plates is formed between the side plate portion and the side board portion and passes through the activity space of the main body. The inclined channel is arranged in the connection portion between the plates and obliquely penetrates from the end of the side board portion adjacent to the webbing abutting portion downward to the 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 board portion and the upper end opening of the inclined channel. One end of the side board portion adjacent to the inclined channel has a clamping surface facing the webbing contact end portion of the webbing abutting portion.

4. The webbing height adjuster according to claim 3, characterized in that, a through hole and a set of connection holes located below the through hole are formed in the frame portion. A part of the webbing abutting portion formed on the upper section of the frame portion extends to the upper end of the through hole. The activity space is formed between the through hole and the webbing abutting portion; the webbing connecting portion is formed and covers the lower section of the frame portion, and the webbing connecting portion combines with the set of connection holes of the frame portion to form the webbing channel.

5. The webbing height adjuster according to claim 4, characterized in that, the top of the webbing connecting portion has an abutting surface extending to the lower section of the through hole, and a limiting post is formed on the abutting surface of the webbing connecting portion. The limiting post protrudes laterally towards the frame portion, and there is a distance between the limiting post and the abutting surface; The elastic member is an arc-shaped elastic sheet with a lower middle part and upwardly curved arcs at both ends. The middle section of the arc-shaped elastic sheet is located between the abutting surface of the webbing connecting portion and the limiting post, and both ends of the arc-shaped elastic sheet respectively abut against the bottom of the side plate portion of the slider.

6. The webbing height adjuster according to any one of claims 3 to 5, wherein, the housing includes a back plate portion, an outer plate portion and an end plate portion. The back plate portion is located outside the second side of the main body and can abut against the top of the side plate portion. The outer plate portion is located outside the first side of the main body. The end plate portion is connected to the top end of the back plate portion. The operation space is located below the end plate portion. A webbing threading space communicating with the activity space from the first side of the main body is formed between the end plate portion and the outer plate portion. The end plate portion is located outside the webbing abutting portion of the main body, and there is an operation spacing between the side surface of the end plate portion facing the operation space and the webbing abutting portion of the main body.

7. The webbing height adjuster according to claim 6, wherein, the housing has side walls on both sides of the back plate portion and the end plate portion, and anti-slip surfaces are formed on the outer peripheral surfaces of the side walls. A receiving groove is formed on the back plate portion of the housing, and the side plate portion of the slider can extend into the receiving groove.

8. The webbing height adjuster according to claim 6, wherein, a bridge portion is formed on the outer plate portion of the housing, and there is a space between the bridge portion and the outer plate portion.

9. A webbing height adjustment device is used in a three-point seat belt system of a vehicle and is connected to a main webbing extending from a webbing retractor in the three-point seat belt system; wherein, the webbing height adjustment device includes: an auxiliary webbing assembly which can be installed in the vehicle and has an auxiliary webbing and an upper ring provided at the upper end of 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 vehicle. The main webbing passes through the upper ring. The sections of the main webbing on both sides of the upper ring are respectively a webbing front section and a webbing shoulder section. The auxiliary webbing is located between the webbing front section and the webbing shoulder section; and a webbing height adjuster which is provided below the upper ring and is 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 includes: a main body which includes a frame portion, and a webbing abutting portion and a webbing connecting portion respectively formed on the upper and lower sections of the frame portion. An activity space for the auxiliary webbing to pass through is formed between the webbing abutting portion and the frame portion. A main webbing passage for the webbing shoulder section to pass through is formed between the webbing connecting portion and the frame portion; a slider which can be installed in the activity space of the main body to move up and down and has an inclined 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 relatively clamp the auxiliary webbing with the webbing abutting portion of the main body; and A set of shells, which are sleeved outside the main body in an up-and-down movable manner. The set of shells can be operated to cause relative displacement between the slider and the main body, so as to release the clamping state of the auxiliary webbing. When the set of shells is released, the elastic force of the elastic member can cause the slider and the main body to relatively clamp the auxiliary webbing.

10. The webbing height adjustment device according to claim 9, characterized in that, an operation space is formed inside the upper section of the set of shells, and two abutting parts are respectively located on both sides below the operation space. The webbing abutting part at the upper end of the main body can move up and down in the operation space of the set of shells. The abutting parts are located below the webbing abutting part. The pulled-up set of shells can push against the webbing abutting part of the main body with the abutting parts, so that the main body and the slider move relatively. Moreover, the set of shells can be operated to press down against the slider, so that the main body and the slider move relatively.

11. The webbing height adjustment device according to claim 10, characterized in that, the two opposite sides of the main body are respectively a first side and a second side. The webbing shoulder section of the main webbing and the auxiliary webbing respectively penetrate into the main body from the first side of the main body and penetrate out of the main body from the second side of the main body. One end of the webbing abutting part adjacent to the movable space has a webbing contact end part; the slider includes a side plate part, a side board part and a connection part between the plates. The side plate part and the side board part are arranged at intervals and are respectively located on the first side and the second side of the main body. The connection part between the plates is formed between the side plate part and the side board part and passes through the movable space of the main body. The inclined channel is arranged in the connection part between the plates, and the inclined channel is obliquely penetrated from top to bottom from one end of the side plate part adjacent to the webbing abutting part towards one end of the side board part adjacent to the webbing connection part. The top end of the side board part is higher than the top end of the side plate part and the upper end notch of the inclined channel. One end of the side plate part adjacent to the inclined channel has a clamping surface, and the clamping surface can relatively clamp the auxiliary webbing with the webbing contact end part of the webbing abutting part.

12. The webbing height adjustment device according to claim 11, characterized in that, a through hole and a set of connection holes located below the through hole are formed in the frame part. A part of the webbing abutting part formed on the upper section of the frame part extends to the upper end of the through hole. The movable space is formed between the through hole and the webbing abutting part; the webbing connection part is formed and wrapped on the lower section of the frame part. The webbing connection part combines with the set of connection holes of the frame part to form the main webbing channel.

13. The webbing height adjustment device according to claim 12, characterized in that, the top of the webbing connection part has an abutting surface extending to the lower section of the through hole, and a limiting column is formed on the abutting surface of the webbing connection part. The limiting column protrudes laterally towards the frame part. There is a distance between the limiting column and the abutting surface; the elastic member is an arc-shaped elastic sheet with a lower middle part and upwardly curved arc-shaped ends. The middle section of the arc-shaped elastic sheet is located between the abutting surface of the webbing connection part and the limiting column. The two end parts of the arc-shaped elastic sheet respectively abut against the bottom of the side plate part of the slider.

14. The webbing height adjustment device according to any one of claims 11 to 13, characterized in that, The housing includes a back plate portion, an outer plate portion and an end plate portion. The back plate portion is located outside the second side of the main body and can abut against the top of the side plate portion. The outer plate portion is located outside the first side of the main body. The end plate portion is connected to the top end of the back plate portion. The operation space is located below the end plate portion. A webbing threading space communicating with the activity space from the first side of the main body is formed between the end plate portion and the outer plate portion. The end plate portion is located outside the webbing abutting portion of the main body, and there is an operation distance between the side surface of the end plate portion facing the operation space and the webbing abutting portion of the main body.

15. The webbing height adjusting device according to claim 14, characterized in that the housing has a side wall on each of the two sides of the back plate portion and the end plate portion, and an anti-slip surface is formed on the outer peripheral surface of the side wall. A receiving groove is formed in the back plate portion of the housing, and the side plate portion of the slider can extend into the receiving groove.

16. The webbing height adjusting device according to claim 14, characterized in that the housing 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 through the main webbing passage of the main body.

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