An active smoothing seat belt retractor and a car seat belt

Abstract

This utility model relates to the technical field of automotive seat belts, specifically an active smoothing seat belt retractor and an automotive seat belt. It includes a guide plate for guiding the seat belt out of the retractor. An output end through which the seat belt passes is formed on the guide plate, and a limiting adjustment member is hinged to the output end. One end of the limiting adjustment member and the contact surface of the output end form a gap for the seat belt to pass through, and the size of the gap is adjustable. An elastic control member is disposed within the guide plate, and the other end of the limiting adjustment member is connected to the elastic control member. When the seat belt is tightened, the limiting adjustment member is subjected to a force close to the output end, causing the limiting adjustment member to be squeezed towards the output end. This reduces the gap between the output shaft and the limiting adjustment member, allowing the twisted seat belt to be actively smoothed when passing through this gap, preventing folding and interference with the retractor.

Description

Technical Field

[0001] This utility model relates to the technical field of automotive seat belts, specifically an active flattening seat belt retractor and an automotive seat belt. Background Technology

[0002] Car seat belts are an indispensable and important safety device in modern cars. Their main function is to protect the lives of passengers by restraining the position of the occupants during a collision or emergency braking, thereby reducing secondary collision injuries caused by inertia.

[0003] The guide plate (or guide ring) is one of the key components of the car seat belt system. Its main function is to guide the seat belt to pass through the seat frame correctly and ensure that it can effectively fix the passenger's body in the event of a collision, thereby providing the best safety protection. However, the section of the seat belt that passes through the guide plate and wraps around the body is prone to twisting. When the retractor tightens the seat belt, the twisted seat belt is prone to folding or jamming at the guide plate, which will interfere with the normal operation of the retractor. Utility Model Content

[0004] The purpose of this invention is to provide an active flattening seatbelt retractor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An active flattening seatbelt retractor includes a guide plate for guiding the seatbelt to be pulled out of the retractor.

[0007] The guide plate has an output end through which the seat belt passes, and a limit adjustment member is hinged on the output end. One end of the limit adjustment member and the abutment surface of the output end form a gap for the seat belt to pass through, and the size of the gap is adjustable.

[0008] An elastic control element is disposed within the guide plate. The other end of the limiting adjustment element is connected to the elastic control element. When the seat belt is tightened or pulled out, the elastic potential energy stored in the elastic control element can control the limiting adjustment element to exert a squeezing or moving force on the seat belt.

[0009] As described above, the active smoothing seat belt retractor and car seat belt include: the limiting adjustment component includes a connecting rod, on which a hinge shaft fixed to the output end wall is rotatably mounted, and a pressure roller is rotatably mounted at one end of the connecting rod, with the gap formed between the pressure roller and the abutment surface, and the other end of the connecting rod is hinged to the elastic control component.

[0010] As described above, the active smoothing seat belt retractor and car seat belt: the elastic control component includes a slider and a pressing block that are slidably disposed in the guide plate, and one end of the slider is fixedly provided with a connecting shaft that is hinged to the connecting rod;

[0011] It also includes a first spring, one end of which is connected to the slider and the other end is hinged to the extrusion block.

[0012] As described above, the active smoothing seat belt retractor and car seat belt have a limiting plate fixedly installed inside the guide plate. Multiple limiting grooves are linearly distributed on the limiting plate, and the locking member provided on the compression block can be inserted into the limiting groove and engaged with it.

[0013] The active smoothing seat belt retractor and car seat belt described above: the locking member includes a plug sleeve fixedly installed on the compression block, and a plug block that can pass through the compression block is slidably disposed in the plug sleeve, and the plug block can be inserted into the limiting groove;

[0014] It also includes a second spring, which is disposed inside the plug sleeve. One end of the second spring abuts against the inner end of the plug sleeve, and the other end abuts against the plug block.

[0015] As described above, the active smoothing seat belt retractor and car seat belt have push plates symmetrically arranged at both ends of the compression block, which can pass through the guide plate and are slidably connected to the guide plate. The push plate is slidably provided with an unlocking block that can compress the insertion block.

[0016] An automotive seatbelt, comprising the active flattening seatbelt retractor described in any one of the preceding claims.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] When the seat belt is tightened, under the action of the elastic control component, the limit adjustment component is subjected to a force close to the output end. The tightening action of the seat belt further drives the limit adjustment component to squeeze towards the output end, making the gap between the output shaft and the limit adjustment component smaller. This allows the twisted seat belt to be actively smoothed when passing through this gap, avoiding folding that could interfere with the retractor. When the seat belt is pulled out, it generates a reaction force on the limit adjustment component, increasing the gap between the limit adjustment component and the output end 101, allowing the seat belt to be pulled out smoothly. This reduces the contact area between the seat belt and the elastic adjustment component while avoiding additional resistance. Attached Figure Description

[0019] Figure 1 A schematic diagram of an active flattening seatbelt retractor.

[0020] Figure 2 A schematic diagram of the cross-section of the guide plate in an active flattening seat belt retractor.

[0021] Figure 3 A schematic diagram of the limit adjustment component and elastic control component in an active flattening seat belt retractor.

[0022] Figure 4 A schematic diagram of the limiting plate in an active flattening seat belt retractor.

[0023] Figure 5 A schematic diagram of the compression block and locking element in an active flattening seat belt retractor.

[0024] In the diagram: 1. Guide plate; 101. Output end; 2. Pressure roller; 3. Hinge shaft; 4. Connecting rod; 5. Connecting shaft; 6. Slider; 7. First spring; 8. Extrusion block; 9. Push plate; 10. Unlocking block; 11. Insertion block; 12. Insertion sleeve; 13. Second spring; 14. Limiting plate; 1401. Limiting groove. Detailed Implementation

[0025] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0026] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0027] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0028] Please see Figures 1-5 In this embodiment of the present invention, an active smoothing seat belt retractor includes a guide plate 1 for guiding the seat belt to be pulled out of the retractor;

[0029] The guide plate 1 has an output end 101 through which the seat belt passes, and a limit adjustment member is hinged on the output end 101. One end of the limit adjustment member and the abutment surface of the output end 101 form a gap for the seat belt to pass through, and the size of the gap is adjustable.

[0030] An elastic control element is disposed within the guide plate 1. The other end of the limiting adjustment element is connected to the elastic control element. When the seat belt is tightened or pulled out, the elastic potential energy stored in the elastic control element can control the limiting adjustment element to exert a squeezing or moving force on the seat belt.

[0031] In this embodiment, when the seat belt is tightened, under the action of the elastic control member, the limiting adjustment member is subjected to a force close to the output end 101. The tightening action of the seat belt further drives the limiting adjustment member to squeeze towards the output end 101, making the gap between the output shaft and the limiting adjustment member smaller. This allows the twisted seat belt to be actively smoothed when passing through this gap, avoiding folding that could interfere with the retractor. When the seat belt is pulled out, it generates a reaction force on the limiting adjustment member, increasing the gap between the limiting adjustment member and the output end 101 so that the seat belt can be pulled out smoothly, reducing the contact area between the seat belt and the elastic adjustment member while avoiding additional resistance.

[0032] For further solutions to this utility model, please refer to [link / reference]. Figure 3 The limiting adjustment component includes a connecting rod 4, on which a hinge shaft 3 fixed to the end wall of the output end 101 is rotatably mounted, and a pressure roller 2 is rotatably mounted at one end of the connecting rod 4, with the gap formed between the pressure roller 2 and the abutment surface, and the other end of the connecting rod 4 is hinged to the elastic control component.

[0033] The elastic control component includes a slider 6 and a pressing block 8 that are slidably disposed in the guide plate 1. One end of the slider 6 is fixedly provided with a connecting shaft 5 that is hinged to the connecting rod 4.

[0034] It also includes a first spring 7, one end of which is connected to the slider 6 and the other end is hinged to the extrusion block 8.

[0035] In the initial state, the first spring 7 is in a compressed state. The setting of the first spring 7 allows the pressure roller 2 to elastically yield when squeezed or pushed by the seat belt, thereby better adjusting the gap between the pressure roller 2 and the output end 101.

[0036] When the seat belt is tightened, the seat belt moves toward the guide plate 1. At this time, the connecting rod 4 is subjected to the force of the seat belt, which causes the pressure roller 2 to further squeeze the seat belt, thereby pushing the pressure roller 2 to apply greater pressure to the seat belt, so that the twisted seat belt can be actively smoothed when it passes through the gap between the pressure roller 2 and the output end 101.

[0037] For further solutions to this utility model, please refer to [link / reference]. Figure 4 and Figure 5A limiting plate 14 is fixedly installed inside the guide plate 1. Multiple limiting grooves 1401 are linearly distributed on the limiting plate 14. The locking member provided on the extrusion block 8 can be inserted into the limiting groove 1401 and engage with the limiting groove 1401.

[0038] The locking member includes a plug sleeve 12 fixedly installed on the extrusion block 8, and a plug block 11 that can penetrate the extrusion block 8 is slidably disposed in the plug sleeve 12, and the plug block 11 can be inserted into the limiting groove 1401.

[0039] It also includes a second spring 13, which is disposed inside the plug sleeve 12. One end of the second spring 13 abuts against the inner end of the plug sleeve 12, and the other end abuts against the plug block 11.

[0040] The two ends of the compression block 8 are symmetrically provided with push plates 9 that can penetrate the guide plate 1 and are slidably connected to the guide plate 1. An unlocking block 10 that can compress the insertion block 11 is slidably provided in the push plate 9.

[0041] If the seatbelt gets stuck on the guide plate 1, the deformation of the first spring 7 is changed. By manually pressing the two push plates 9 simultaneously, the two push plates 9 move towards the compression block 8. While moving, the inclined surfaces on the push plates 9 press against the pressure surface on the insertion block 11, causing the insertion block 11 to move towards the insertion sleeve 12. At this time, the insertion block 11 disengages from the limiting groove 1401 and retracts into the compression block 8, completely releasing the locking state of the compression block 8. By controlling the movement of the push plates 9, the deformation of the first spring 7 can be adjusted, thereby indirectly changing the gap between the pressure roller 2 and the output end 101. By appropriately adjusting this gap, the friction between the seatbelt and the output end 101 can be reduced, making the tightening and pulling of the seatbelt smoother and extending its service life.

[0042] An automotive seatbelt, comprising the active flattening seatbelt retractor described in any one of the preceding claims.

[0043] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0044] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An active flattening seatbelt retractor, comprising a guide plate (1) for guiding the seatbelt to be pulled out of the retractor, Its characteristics are: The guide plate (1) has an output end (101) through which the seat belt passes, and a limit adjustment member is hinged on the output end (101). One end of the limit adjustment member and the abutment surface of the output end (101) form a gap for the seat belt to pass through, and the size of the gap is adjustable. An elastic control element is disposed inside the guide plate (1). The other end of the limiting adjustment element is connected to the elastic control element. When the seat belt is tightened or pulled out, the elastic potential energy stored in the elastic control element can control the limiting adjustment element to exert a squeezing or moving force on the seat belt.

2. The active smoothing seatbelt retractor according to claim 1, characterized in that, The limiting adjustment component includes a connecting rod (4), on which a hinge shaft (3) fixed to the end wall of the output end (101) is rotatably mounted, and a pressure roller (2) is rotatably mounted on one end of the connecting rod (4), and the gap is formed between the pressure roller (2) and the abutment surface. The other end of the connecting rod (4) is hinged to the elastic control component.

3. The active smoothing seatbelt retractor according to claim 2, characterized in that, The elastic control component includes a slider (6) and a pressing block (8) slidably disposed in the guide plate (1). One end of the slider (6) is fixedly provided with a connecting shaft (5) hinged to the connecting rod (4). It also includes a first spring (7), one end of which is connected to the slider (6) and the other end is hinged to the extrusion block (8).

4. The active smoothing seatbelt retractor according to claim 3, characterized in that, A limiting plate (14) is fixedly installed inside the guide plate (1). Multiple limiting grooves (1401) are linearly distributed on the limiting plate (14). The locking member provided on the extrusion block (8) can be inserted into the limiting groove (1401) and engage with the limiting groove (1401).

5. The active smoothing seatbelt retractor according to claim 4, characterized in that, The locking member includes a plug sleeve (12) fixedly installed on the extrusion block (8), and a plug block (11) that can penetrate the extrusion block (8) is slidably disposed in the plug sleeve (12), and the plug block (11) can be inserted into the limiting groove (1401). It also includes a second spring (13), which is disposed inside the plug sleeve (12). One end of the second spring (13) abuts against the inner end of the plug sleeve (12), and the other end abuts against the plug block (11).

6. The active smoothing seatbelt retractor according to claim 5, characterized in that, The two ends of the compression block (8) are symmetrically provided with push plates (9) that can penetrate the guide plate (1) and are slidably connected to the guide plate (1). The push plate (9) is slidably provided with an unlocking block (10) that can compress the insertion block (11).

7. A car seat belt, characterized in that, Includes an active smoothing seatbelt retractor as described in any one of claims 1-6 above.

Images