A seatbelt retractor and a vehicle

Abstract

This application relates to the field of vehicle technology and discloses a seat belt retractor and a vehicle, comprising: a retractor frame, the retractor frame having a mounting hole on one side along a first direction; a reel, a portion of which is rotatably disposed within the retractor frame for winding the seat belt, the reel extending along the first direction and passing through the mounting hole, the outer peripheral wall of the reel being spaced apart from the wall of the mounting hole; and a cover plate covering the mounting hole for shielding the mounting hole, the end of the cover plate facing the inner side of the retractor frame having a protrusion disposed between the reel and the wall of the mounting hole, the protrusion being spaced apart from the reel. The seat belt retractor provided by this application allows the protrusion to fill the gap between the reel and the wall of the mounting hole, thereby preventing the seat belt from getting stuck in the gap between the reel and the wall of the mounting hole, ensuring smooth seat belt retraction.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a seat belt retractor and a vehicle. Background Technology

[0002] Currently, seat belt retractors sometimes experience webbing failure to rewind under certain special operating conditions, and there are many reasons why the webbing might not rewind. One reason is that, due to the requirements of reel installation, the diameter of the mounting holes on the seat belt retractor frame must be larger than the diameter of the reel. This can cause the webbing to become stuck in the gap between the mounting hole wall and the reel during winding, resulting in the webbing becoming jammed and unable to rewind. Utility Model Content

[0003] Therefore, this application provides a seat belt retractor that can prevent the seat belt from getting stuck in the gap between the retractor and the wall of the mounting hole, thus ensuring smooth seat belt retraction.

[0004] This application also provides a vehicle including the aforementioned seatbelt retractor.

[0005] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:

[0006] In a first aspect, embodiments of this application provide a seatbelt retractor, comprising: a retractor frame having a mounting hole on one side along a first direction; a retractor shaft, a portion of which is rotatably disposed within the retractor frame for winding a seatbelt, the retractor shaft extending along the first direction and passing through the mounting hole, the outer peripheral wall of the retractor shaft being spaced apart from the wall of the mounting hole; and a cover plate covering the mounting hole for shielding the mounting hole, the end of the cover plate facing the inner side of the retractor frame having a protrusion, the protrusion being disposed between the retractor shaft and the wall of the mounting hole, the protrusion being spaced apart from the retractor shaft.

[0007] The seat belt retractor provided in this application embodiment has a mounting hole on one side of the retractor frame along a first direction; a reel extends along the first direction and passes through the mounting hole, the outer peripheral wall of the reel is spaced apart from the hole wall of the mounting hole, a cover plate is placed on the mounting hole, and the end of the cover plate facing the inner side of the retractor frame has a protrusion, the protrusion is located between the reel and the hole wall of the mounting hole, and the protrusion is spaced apart from the reel, so that the protrusion can fill the gap between the reel and the hole wall of the mounting hole, thereby preventing the seat belt from getting stuck in the gap between the reel and the hole wall of the mounting hole, so that the seat belt can be retracted smoothly.

[0008] In one possible implementation of this application, the peripheral wall of the protrusion along the radially outer side of the mounting hole fits against the wall of the mounting hole.

[0009] In one possible implementation of this application, the distance between the peripheral wall of the protrusion along the radial inner side of the mounting hole and the outer peripheral wall of the scroll is 0.5-1 mm.

[0010] In one possible implementation of this application, the protrusion extends along the circumferential direction of the mounting hole.

[0011] In one possible implementation of this application, the protrusions are a plurality of protrusions spaced apart along the circumferential direction of the mounting hole.

[0012] In one possible implementation of this application, the cover plate is disposed on the side of the mounting hole facing the outside of the retractor frame, and the side of the protrusion opposite to the cover plate is flush with the side of the mounting hole opposite to the cover plate.

[0013] In one possible implementation of this application, in a plane projection perpendicular to the first direction, the distance between the outer contour of the spool located in the mounting hole and the hole wall of the mounting hole is equal everywhere, and the distance between the radially inner side and the radially outer side of the protrusion is equal everywhere.

[0014] In one possible implementation of this application, the mounting hole includes a first mounting hole and a second mounting hole arranged and connected along the radial direction of the mounting hole. The spool passes through the first mounting hole, and the protrusion is disposed in the second mounting hole. In a direction perpendicular to the first direction and the arrangement direction of the first mounting hole and the second mounting hole, the minimum width of the second mounting hole is greater than or equal to the maximum width of the first mounting hole.

[0015] In one possible implementation of this application, in a plane projection perpendicular to the first direction, the outer contour of the radially outer side of the protrusion is the same as the outer contour shape of the wall of the second mounting hole, and the outer contour of the radially inner side of the protrusion is the same as the outer contour shape of the scroll opposite to the protrusion.

[0016] Secondly, embodiments of this application provide a vehicle including the aforementioned seatbelt retractor.

[0017] The vehicle provided in this application embodiment has a seat belt retractor. The retractor frame has a mounting hole on one side along the first direction. A reel extends along the first direction and passes through the mounting hole. The outer peripheral wall of the reel is spaced apart from the wall of the mounting hole. A cover plate covers the mounting hole. The end of the cover plate facing the inside of the retractor frame has a protrusion. The protrusion is located between the reel and the wall of the mounting hole and is spaced apart from the reel. This allows the protrusion to fill the gap between the reel and the wall of the mounting hole, thereby preventing the seat belt from getting stuck in the gap between the reel and the wall of the mounting hole, and ensuring smooth retraction of the seat belt.

[0018] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0019] Figure 1 A perspective view of a seatbelt retractor provided in an embodiment of this application;

[0020] Figure 2 A perspective view of the seatbelt retractor provided in an embodiment of this application;

[0021] Figure 3 A perspective view of the reel of a seatbelt retractor provided in an embodiment of this application, wherein represents the winding of the seatbelt;

[0022] Figure 4 A perspective view of the retractor frame of a seatbelt retractor provided in an embodiment of this application;

[0023] Figure 5 A perspective view of the cover plate of the seat belt retractor provided in an embodiment of this application.

[0024] Figure label:

[0025] 10. Seat belt retractor;

[0026] 1. Retractor frame; 11. Mounting hole; 111. First mounting hole; 112. Second mounting hole;

[0027] 2. Cover plate; 21. Protrusion;

[0028] 3. Scroll;

[0029] 20. Seat belts. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the specific technical solutions of this application will be further described in detail below with reference to the accompanying drawings of the embodiments of this application. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0031] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0032] Furthermore, in the embodiments of this application, directional terms such as "upper," "lower," "left," and "right" are defined relative to the positions in which the components are schematically placed in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the position of the components in the accompanying drawings.

[0033] In the embodiments of this application, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can mean a fixed connection, a detachable connection, or an integral part; it can mean a direct connection or an indirect connection through an intermediate medium.

[0034] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0035] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0036] The following is for reference. Figures 1-5 This application describes a seatbelt retractor 10 provided in an embodiment.

[0037] Firstly, such as Figures 1-5 As shown, this application embodiment provides a seat belt retractor 10, including: a retractor frame 1, a reel 3, and a cover plate 2.

[0038] Specifically, refer to Figures 1-5 The retractor frame 1 is along the first direction (e.g., Figure 1 The reel 3 has a mounting hole 11 on one side (direction a) shown. A portion of the reel 3 is rotatably disposed within the retractor frame 1 for winding the safety belt 20. The reel 3 extends along the first direction and passes through the mounting hole 11. The outer peripheral wall of the reel 3 is spaced apart from the wall of the mounting hole 11. It should be noted that the spaced-apart structure between the outer peripheral wall of the reel 3 and the wall of the mounting hole 11 allows the reel 3 to be quickly and easily installed into the retractor frame 1 from the mounting hole 11, improving the ease of installation.

[0039] Furthermore, such as Figures 1-5 As shown, the cover plate 2 is placed over the mounting hole 11 to cover the mounting hole 11. The end of the cover plate 2 facing the inside of the retractor frame 1 has a protrusion 21. The protrusion 21 is located between the reel 3 and the wall of the mounting hole 11, and the protrusion 21 is spaced apart from the reel 3.

[0040] Understandably, since the protrusion 21 is provided on the cover plate 2, it will not affect the installation of the reel 3 when it is installed from the mounting hole 11 to the retractor frame 1. When the cover plate 2 is installed, the protrusion 21 can fill the gap between the reel 3 and the wall of the mounting hole 11, thereby preventing the safety belt 20 from getting stuck in the gap between the reel 3 and the wall of the mounting hole 11, so that the safety belt 20 can be wound up smoothly.

[0041] The protrusion 21 is spaced apart from the spool 3 (the inner side of the protrusion 21 in the radial direction of the mounting hole 11 is spaced apart from the outer peripheral wall of the spool 3), thereby preventing the protrusion 21 from interfering with the rotation of the spool 3.

[0042] The seat belt retractor 10 provided in this application embodiment has a mounting hole 11 on one side of the retractor frame 1 along a first direction; a reel 3 extends along the first direction and passes through the mounting hole 11, the outer peripheral wall of the reel 3 is spaced apart from the hole wall of the mounting hole 11, a cover plate 2 is placed on the mounting hole 11, and the end of the cover plate 2 facing the inner side of the retractor frame 1 has a protrusion 21, the protrusion 21 is disposed between the reel 3 and the hole wall of the mounting hole 11, the protrusion 21 is spaced apart from the reel 3, so that the protrusion 21 can fill the gap between the reel 3 and the hole wall of the mounting hole 11, thereby preventing the seat belt 20 from getting stuck in the gap between the reel 3 and the hole wall of the mounting hole 11, so that the seat belt 20 can be retracted smoothly.

[0043] In one possible implementation of this application, such as Figure 4 and Figure 5 As shown, the peripheral wall of the protrusion 21 along the radially outer side of the mounting hole 11 fits against the hole wall of the mounting hole 11. It can be understood that after the peripheral wall of the protrusion 21 along the radially outer side of the mounting hole 11 fits against the hole wall of the mounting hole 11, that is, after the peripheral wall of the protrusion 21 along the radially outer side of the mounting hole 11 fits against the hole wall of the mounting hole 11 without any gap, this can prevent the seat belt 20 from getting stuck between the peripheral wall of the protrusion 21 along the radially outer side of the mounting hole 11 and the hole wall of the mounting hole 11, further ensuring smooth retraction of the seat belt 20.

[0044] In one possible implementation of this application, the distance between the peripheral wall of the protrusion 21 along the radial inner side of the mounting hole 11 and the outer peripheral wall (outer peripheral wall with the largest diameter) of the scroll 3 is 0.5-1mm, for example 0.5mm, 0.6mm, 0.7mm or 1mm.

[0045] This ensures that the distance between the radially inner peripheral wall of the protrusion 21 along the mounting hole 11 and the outer peripheral wall of the reel 3 is appropriate. On the one hand, it prevents the distance between the radially inner peripheral wall of the protrusion 21 and the outer peripheral wall of the reel 3 from being too large, which would cause the seat belt 20 to get stuck between the radially inner peripheral wall of the protrusion 21 and the outer peripheral wall of the reel 3, thus ensuring smooth rewinding of the seat belt 20. On the other hand, it prevents the distance between the radially inner peripheral wall of the protrusion 21 and the outer peripheral wall of the reel 3 from being too small, thereby preventing the protrusion 21 from interfering with the rotation of the reel 3.

[0046] In one possible implementation of this application, such as Figure 4 and Figure 5 As shown, the protrusion 21 extends along the circumferential direction of the mounting hole 11. This further enhances the blocking effect of the protrusion 21 on the seat belt 20, allowing the protrusion 21 to better fill the gap between the reel 3 and the wall of the mounting hole 11, thereby preventing the seat belt 20 from getting stuck in the gap between the reel 3 and the wall of the mounting hole 11, and ensuring smooth rewinding of the seat belt 20.

[0047] In one possible implementation of this application, the protrusions 21 are a plurality of spaced apart along the circumferential direction of the mounting hole 11. This further enhances the blocking effect of the protrusions 21 on the seat belt 20, allowing the protrusions 21 to better fill the gap between the reel 3 and the wall of the mounting hole 11, thereby preventing the seat belt 20 from getting stuck in the gap between the reel 3 and the wall of the mounting hole 11, and ensuring smooth rewinding of the seat belt 20.

[0048] In one possible implementation of this application, the cover plate 2 is located on the side of the mounting hole 11 facing the outside of the retractor frame 1, and the side of the protrusion 21 facing away from the cover plate 2 is flush with the side of the mounting hole 11 facing away from the cover plate 2. This further enhances the blocking effect of the protrusion 21 on the seat belt 20, allowing the protrusion 21 to better fill the gap between the reel 3 and the wall of the mounting hole 11, thereby preventing the seat belt 20 from getting stuck in the gap between the reel 3 and the wall of the mounting hole 11, and ensuring smooth rewinding of the seat belt 20.

[0049] In one possible implementation of this application, in a plane projection perpendicular to the first direction, the distance between the outer contour of the scroll 3 located within the mounting hole 11 and the hole wall of the mounting hole 11 is equal everywhere, and the distance between the radially inner side and the radially outer side of the protrusion 21 is equal everywhere. It should be noted that the protrusion 21 can be annular, surrounding the scroll 3.

[0050] It is understandable that the above-mentioned arrangement makes the protrusion 21 and the mounting hole 11 more regular, which facilitates the production process, improves production efficiency and reduces production costs.

[0051] In one possible implementation of this application, such as Figure 4 and Figure 5 As shown, the mounting hole 11 includes a first mounting hole 111 and a second mounting hole 112 arranged and connected along the radial direction of the mounting hole 11. The spool 3 passes through the first mounting hole 111, and the protrusion 21 is provided in the second mounting hole 112. In the direction perpendicular to the first direction and the arrangement direction of the first mounting hole 111 and the second mounting hole 112, the minimum width of the second mounting hole 112 is greater than or equal to the maximum width of the first mounting hole 111.

[0052] It is understandable that the arrangement of the first mounting hole 111 and the second mounting hole 112 makes the mounting hole 11 an irregularly shaped hole. When the protrusion 21 on the cover plate 2 is located in the second mounting hole 112, it can form a foolproof structure, making the installation of the cover plate 2 and the retractor frame 1 more accurate and convenient. On the other hand, when the protrusion 21 on the cover plate 2 is located in the second mounting hole 112, it can also limit the cover plate 2, thereby preventing the cover plate 2 from rotating (the rotation axis extends along the first direction).

[0053] For example, in this application, the first mounting hole 111 is circular and the second mounting hole 112 is crescent-shaped, i.e., narrow at both ends and wide in the middle, in the plane projection perpendicular to the first direction. However, this application is not limited to this; the first mounting hole 111 and the second mounting hole 112 can also be other shapes in the plane projection perpendicular to the first direction.

[0054] In one possible implementation of this application, such as Figure 4 and Figure 5 As shown, in a plane projection perpendicular to the first direction, the outer contour of the radially outer side of the protrusion 21 has the same shape as the outer contour of the wall of the second mounting hole 112, and the outer contour of the radially inner side of the protrusion 21 has the same shape as the outer contour of the portion of the scroll 3 opposite to the protrusion 21. It should be noted that the portion of the scroll 3 opposite to the protrusion 21 refers to the portion of the scroll 3 located within the first mounting hole 111 and facing the second mounting hole 112.

[0055] Understandably, in the plane projection perpendicular to the first direction, the outer contour of the radially outer side of the protrusion 21 is the same as the outer contour of the wall of the second mounting hole 112. This allows the peripheral wall of the protrusion 21 along the radially outer side of the first mounting hole 111 to fit better with the wall of the second mounting hole 112, thereby further reducing the gap between the peripheral wall of the protrusion 21 along the radially outer side of the first mounting hole 111 and the wall of the second mounting hole 112. This prevents the seat belt 20 from getting stuck between the peripheral wall of the protrusion 21 along the radially outer side of the mounting hole 111 and the wall of the mounting hole 111, further making the seat belt 20 retract smoothly.

[0056] In a plane projection perpendicular to the first direction, the outer contour of the radially inner side of the protrusion 21 is the same as the outer contour shape of the portion of the reel 3 opposite to the protrusion 21. This further reduces the gap between the peripheral wall of the protrusion 21 along the radially inner side of the first mounting hole 111 and the outer peripheral wall of the reel 3, further preventing the seat belt 20 from getting stuck between the peripheral wall of the protrusion 21 along the radially inner side of the first mounting hole 111 and the outer peripheral wall of the reel 3, thus ensuring smooth rewinding of the seat belt 20.

[0057] The vehicle provided in the embodiments of this application is described below.

[0058] Secondly, embodiments of this application provide a vehicle including the aforementioned seatbelt retractor 10.

[0059] The vehicle provided in this application embodiment has a seat belt retractor 10 as described above. The retractor frame 1 has a mounting hole 11 on one side along the first direction. The retractor 3 extends along the first direction and passes through the mounting hole 11. The outer peripheral wall of the retractor 3 is spaced apart from the hole wall of the mounting hole 11. The cover plate 2 covers the mounting hole 11. The end of the cover plate 2 facing the inner side of the retractor frame 1 has a protrusion 21. The protrusion 21 is located between the retractor 3 and the hole wall of the mounting hole 11. The protrusion 21 is spaced apart from the retractor 3, so that the protrusion 21 can fill the gap between the retractor 3 and the hole wall of the mounting hole 11, thereby preventing the seat belt 20 from getting stuck in the gap between the retractor 3 and the hole wall of the mounting hole 11, so that the seat belt 20 can be retracted smoothly.

[0060] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments. The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made based on the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A seat belt retractor characterized by, include: A retractor frame having mounting holes on one side along a first direction; A reel, a portion of which is rotatably disposed within a retractor frame for winding a seat belt, the reel extending along the first direction and passing through a mounting hole, the outer peripheral wall of the reel being spaced apart from the wall of the mounting hole; A cover plate is provided on the mounting hole to cover the mounting hole. One end of the cover plate facing the inside of the retractor frame has a protrusion. The protrusion is located between the reel and the wall of the mounting hole, and the protrusion is spaced apart from the reel.

2. The seat belt retractor of claim 1 wherein, The peripheral wall of the protrusion along the radial outer side of the mounting hole fits against the wall of the mounting hole.

3. The seat belt retractor of claim 1 wherein, The distance between the peripheral wall of the protrusion along the radial inner side of the mounting hole and the outer peripheral wall of the scroll is 0.5-1mm.

4. The seat belt retractor of claim 1 wherein, The protrusion extends along the circumferential direction of the mounting hole.

5. The seat belt retractor of claim 1 wherein, The protrusions are a plurality of portions spaced apart along the circumferential direction of the mounting holes.

6. The seat belt retractor of claim 1 wherein, The cover plate is located on the side of the mounting hole facing the outside of the retractor frame, and the side of the protrusion opposite to the cover plate is flush with the side of the mounting hole opposite to the cover plate.

7. The seatbelt retractor according to claim 1, characterized in that, In a plane projection perpendicular to the first direction, the distance between the outer contour of the spool located in the mounting hole and the hole wall of the mounting hole is equal everywhere, and the distance between the radially inner side and the radially outer side of the protrusion is equal everywhere.

8. The seatbelt retractor according to claim 1, characterized in that, The mounting holes include a first mounting hole and a second mounting hole arranged and connected along the radial direction of the mounting holes. The spool passes through the first mounting hole, and the protrusion is disposed in the second mounting hole. In a direction perpendicular to the first direction and the arrangement direction of the first mounting hole and the second mounting hole, the minimum width of the second mounting hole is greater than or equal to the maximum width of the first mounting hole.

9. The seatbelt retractor according to claim 8, characterized in that, In a plane projection perpendicular to the first direction, the outer contour of the radially outer side of the protrusion has the same shape as the outer contour of the wall of the second mounting hole, and the outer contour of the radially inner side of the protrusion has the same shape as the outer contour of the scroll opposite to the protrusion.

10. A vehicle, characterized in that, Includes a seatbelt retractor according to any one of claims 1-9.

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