Retractor structure, safety belt device and vehicle

Abstract

The invention discloses a retractor structure, a safety belt device and a vehicle, and relates to the technical field of safety belt device.The retractor structure comprises a retractor body, a guide sleeve and a mounting framework, the retractor body comprises a shell and a winding shaft arranged in the shell, the winding shaft extends in the first direction and is used for winding a safety belt, and the guide sleeve is arranged in the mounting framework; the shell is provided with a hook in a protruding mode in the second direction, the shell is further provided with an outlet used for a safety belt on the winding shaft to stretch out, the guide sleeve is fixedly installed at the outlet of the shell and used for guiding the safety belt, the installation frame is used for being fixedly installed on a vehicle body B column, and the installation frame and the shell are each provided with a first installation hole used for being connected through a bolt. A clamping groove is further formed in the mounting frame and used for hanging the hook, the mounting frame comprises a limiting part, and the limiting part abuts against the side end of the hook hung in the clamping groove and used for limiting rotation of the hook. According to the scheme, the problem of return clamping stagnation of the safety belt is solved in the aspect of part assembly.

Description

Technical Field

[0001] The present invention relates to the technical field of seat belt devices, and in particular to a retractor structure, a seat belt device and a vehicle. Background Art

[0002] The seat belt retractor is an important part of the automobile safety system. It is responsible for allowing passengers to move freely when the vehicle is driving normally, and quickly locking the seat belt in the event of a collision or emergency braking to protect the safety of passengers. The working principle of the seat belt retractor is based on the inertial locking mechanism. There is a rewinding spring inside it that can retract the webbing wound on the reel to ensure that the webbing is always close to the human body.

[0003] During the use of seat belts, problems such as stuck return and poor retraction often occur. To solve the above problems, the current method is to regularly inspect and lubricate the seat belt device and replace aging parts. However, this solution requires long-term maintenance and cannot fundamentally solve the problem. Summary of the invention

[0004] The main purpose of the present invention is to provide a retractor structure, a seat belt device and a vehicle, aiming to solve the current problems of seat belt returning to a stuck position and poor recovery.

[0005] To achieve the above object, the present invention provides a retractor structure, comprising:

[0006] The retractor body comprises a shell and a reel disposed inside the shell, the reel extending in a first direction and used to reel in the safety belt, the shell protrudingly provided with a hook in a second direction, and the shell also provided with an outlet for the safety belt on the reel to extend out;

[0007] a guide sleeve, fixedly mounted at the outlet of the housing, for guiding the safety belt; and

[0008] The mounting frame is used for being fixedly mounted on the B-pillar of the vehicle body. A first mounting hole is respectively provided on the mounting frame and the shell for being connected by bolts. A card slot is also provided on the mounting frame for hanging the hook. The mounting frame includes a limiting portion, which abuts against the side end of the hook hung in the card slot to limit the rotation of the hook.

[0009] In one embodiment, the hook extends along a first direction, and a side end of the hook in the first direction abuts against a slot wall of the slot;

[0010] The limiting portion is configured as a limiting boss, which is protruding from a slot wall of the slot along a first direction and bent along a second direction to form a convex portion abutting against a side end of the hook in the first direction.

[0011] In one embodiment, the side end of the hook in the first direction is bent along the third direction to form a bent end, and the bent end abuts against the protrusion.

[0012] In one embodiment, a side end portion of the hook in the first direction extends along the first direction to form an extended end abutting against the mounting frame in the second direction.

[0013] In one embodiment, a connecting portion is provided on the guide sleeve, and the connecting portion comprises plastic;

[0014] A second mounting hole is provided on the shell body corresponding to the connecting portion, and the connecting portion is hot-melt connected to the second mounting hole.

[0015] In one embodiment, two connecting portions are provided, and two second mounting holes are correspondingly provided.

[0016] In one embodiment, a plurality of bosses are disposed on the mounting frame.

[0017] In one embodiment, a plurality of reinforcing ribs are provided on the mounting frame.

[0018] The present invention further provides a seat belt device, comprising the above-mentioned retractor structure, wherein the retractor structure comprises:

[0019] The retractor body comprises a shell and a reel disposed inside the shell, the reel extending in a first direction and used to reel in the safety belt, the shell protrudingly provided with a hook in a second direction, and the shell also provided with an outlet for the safety belt on the reel to extend out;

[0020] a guide sleeve, fixedly mounted at the outlet of the housing, for guiding the safety belt; and

[0021] The mounting frame is used for being fixedly mounted on the B-pillar of the vehicle body. A first mounting hole is respectively provided on the mounting frame and the shell for being connected by bolts. A card slot is also provided on the mounting frame for hanging the hook. The mounting frame includes a limiting portion, which abuts against the side end of the hook hung in the card slot to limit the rotation of the hook.

[0022] The present invention further provides a vehicle, comprising the above-mentioned seat belt device, the seat belt device comprising the above-mentioned retractor structure, the retractor structure comprising:

[0023] The retractor body comprises a shell and a reel disposed inside the shell, the reel extending in a first direction and used to reel in the safety belt, the shell protrudingly provided with a hook in a second direction, and the shell also provided with an outlet for the safety belt on the reel to extend out;

[0024] a guide sleeve, fixedly mounted at the outlet of the housing, for guiding the safety belt; and

[0025] The mounting frame is used for being fixedly mounted on the B-pillar of the vehicle body. A first mounting hole is respectively provided on the mounting frame and the shell for being connected by bolts. A card slot is also provided on the mounting frame for hanging the hook. The mounting frame includes a limiting portion, which abuts against the side end of the hook hung in the card slot to limit the rotation of the hook.

[0026] The technical solution of the present invention is to set a reel extending in the first direction and to set a hook in the second direction of the housing so that the axial direction of the reel is parallel to the side surface of the housing suspension, thereby ensuring that the safety belt at the outlet can be parallel to the side end of the B-pillar of the vehicle body, and the structure is more reasonable. Since the safety belt inevitably rubs against the guide sleeve during the reeling process, the guide sleeve is fixedly set at the outlet so that the guide sleeve will not move with the withdrawal and recovery of the safety belt during the reeling process, thereby ensuring that the sliding friction between the guide sleeve and the safety belt is constant, and solving the problem of the safety belt being stuck at the guide sleeve. Furthermore, since the reel body is mounted on the mounting frame by a bolt, the mounting frame shakes in the plane where it is located, and the limiting part is set at the side end of the card slot, and the limiting part abuts against the side end of the hook, thereby limiting the hook on the housing, limiting the rotation of the reel body, making the reel body more stable, thereby ensuring that the safety belt does not interfere with the housing during the movement, reducing the source of friction resistance during the reeling process, and fundamentally solving the problem of the reeling and releasing of the safety belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0028] Figure 1 A schematic structural diagram of an embodiment of a retractor structure provided by the present invention;

[0029] Figure 2 for Figure 1 Schematic diagram of the structure of the middle shell and the guide sleeve;

[0030] Figure 3 for Figure 1 A partial schematic diagram of the installation frame;

[0031] Figure 4 for Figure 1 An enlarged schematic diagram of the mounting frame at the card slot;

[0032] Figure 5 for Figure 1 Schematic diagram of the structure of the guide sleeve.

[0033] Description of Figure Numbers:

[0034] 1000. Reel structure; 1. Reel body; 11. Shell; 12. Reel shaft; 13. Hook; 131. Bending end; 132. Extending end; 2. Guide sleeve; 21. Connecting portion; 3. Mounting frame; 31. Slot; 32. Limiting portion; 321. Limiting boss; 3211. Boss; 33. Boss; 34. Reinforcing rib.

[0035] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0038] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0039] The seat belt retractor is an important part of the automobile safety system. It is responsible for allowing passengers to move freely when the vehicle is driving normally, and quickly locking the seat belt in the event of a collision or emergency braking to protect the safety of passengers. The working principle of the seat belt retractor is based on the inertial locking mechanism. There is a rewinding spring inside it that can retract the webbing wound on the reel to ensure that the webbing is always close to the human body.

[0040] During the use of seat belts, problems such as stuck return and poor retraction often occur. To solve the above problems, the current method is to regularly inspect and lubricate the seat belt device and replace aging parts. However, this solution requires long-term maintenance and cannot fundamentally solve the problem.

[0041] The main purpose of the present invention is to provide a retractor structure, a seat belt device and a vehicle, aiming to solve the current problems of seat belt returning to a stuck position and poor recovery.

[0042] See also Figure 1 The present invention proposes a retractor structure 1000, comprising a retractor body 1, a guide sleeve 2 and a mounting frame 3, wherein the retractor body 1 comprises a shell 11 and a reel 12 arranged inside the shell 11, wherein the reel 12 extends along a first direction and is used to reel in a seat belt, wherein the shell 11 is provided with a hook 13 protruding in a second direction, and the shell 11 is further provided with an outlet for allowing the seat belt on the reel 12 to extend out; the guide sleeve 2 is fixedly installed at the outlet of the shell 11 for guiding the seat belt; the mounting frame 3 is used to be fixedly installed on the B-pillar of the vehicle body, wherein a first mounting hole is respectively provided on the mounting frame 3 and the shell 11 for connection by bolts, wherein a card slot 31 is further provided on the mounting frame 3 for hanging the hook 13, and the mounting frame 3 comprises a limiting portion 32, wherein the limiting portion 32 abuts against the side end of the hook 13 hung in the card slot 31 to limit the rotation of the hook 13.

[0043] The technical solution of the present invention is to set a reel 12 extending in a first direction and to set a hook 13 in a second direction of the housing 11, so that the axial direction of the reel is parallel to the side surface of the housing 11, thereby ensuring that the safety belt at the exit can be parallel to the side end of the B-pillar of the vehicle body, and the structure is more reasonable. Since the safety belt will inevitably rub against the guide sleeve 2 during the reeling process, by fixing the guide sleeve 2 at the exit, the guide sleeve 2 will not move with the withdrawal and recovery of the safety belt during the reeling process, thereby ensuring that the sliding friction between the guide sleeve 2 and the safety belt is constant, and solving the problem of the safety belt getting stuck at the guide sleeve 2. Furthermore, since the retractor body 1 is mounted on the mounting frame 3 by a bolt, the mounting frame 3 swings within the plane. By providing the limiting portion 32 at the side end of the slot 31, the limiting portion 32 abuts against the side end of the hook 13, thereby limiting the hook 13 on the shell 11 and restricting the rotation of the retractor body 1, making the retractor body 1 more stable, thereby ensuring that the seat belt does not interfere with the shell 11 during movement, reducing the source of friction resistance during the rewinding process, and fundamentally solving the problem of seat belt retraction and release jamming.

[0044] It should be noted that the first direction is orthogonal to the second direction, and the second direction is perpendicular to the winding direction of the seat belt at the exit, so as to ensure that after the retractor body is hung, the winding direction of the seat belt at the exit is in the vertical direction.

[0045] It should also be noted that in the field of vehicles, the B-pillar is also called the middle pillar, which is an important part of the vehicle structure. It is located between the front door and the rear door of the vehicle, forming a vertical support on the side of the vehicle. Generally speaking, the seat belt device is usually installed on the B-pillar of the vehicle.

[0046] For further information, please refer to Figure 3 and Figure 4 , the hook 13 extends along the first direction, and the side end of the hook 13 in the first direction abuts against the groove wall of the slot 31; the limiting portion 32 is provided as a limiting boss 321, the limiting boss 321 is protrudingly provided on the groove wall of the slot 31 along the first direction, and is bent along the second direction to form a convex portion 3211 abutting against the side end of the hook 13 in the first direction. Such a setting has a simple structure and low manufacturing cost, and the setting of the convex portion 3211 ensures that the end of the hook 13 is in full contact with the limiting boss 321, meeting the basic requirement that the reel body is stopped in the plane of the mounting frame 3.

[0047] It is worth mentioning that the solution in the present invention does not limit the number of the limiting bosses 321. In the preferred embodiment of the present invention, there is one limiting boss 321, which is located on one side of the hook 13, and the other side of the hook 13 is in contact with the groove wall of the slot 31. The two ends of the hook 13 are respectively limited by the groove wall of the slot 31 and the limiting boss 321, which has met the basic requirement of preventing the reel body from shaking in the plane of the mounting frame 3. The structure is simple and convenient for assembling the hook 13. In another embodiment, there are two limiting bosses 321, which are arranged on two opposite groove walls of the slot 31. In this way, the hook 13 and the slot 31 are more closely matched, and the overall structure is more stable.

[0048] Furthermore, the side end of the hook 13 in the first direction is bent along the third direction to form a bent end 131, and the bent end 131 abuts against the convex portion 3211. By providing the bent end 131, the abutting area between the end of the hook 13 and the limiting boss 321 is further increased, thereby improving the stability of the retractor body 1.

[0049] Furthermore, the side end portion of the hook 13 in the first direction extends along the first direction to form an extended end 132 that abuts against the mounting frame 3 in the second direction. By providing the extended end 132, the hook 13 is limited in the second direction, which can prevent the hook 13 from shaking in the plane in the second direction, and further improve the stability of the retractor body 1.

[0050] It is worth mentioning that the above two schemes can be set selectively or simultaneously. In a preferred embodiment of the present invention, the limiting boss 321 is provided with one, and the hook 13 is provided with a bent end 131 on the side close to the limiting boss 321 in the first direction, and an extended end 132 on the side away from the limiting boss 321. In this way, the hook 13 can be limited in multiple directions, while ensuring the stable cooperation between the hook 13 and the slot 31, the assembly performance of the device is improved, which is convenient for subsequent disassembly and maintenance.

[0051] It should be noted that this solution does not limit the fixed connection method between the guide sleeve 2 and the housing 11. In a preferred embodiment, please refer to Figure 2 and 5, the guide sleeve 2 is provided with a connecting portion 21, and the connecting portion 21 includes plastic; the shell 11 is provided with a second mounting hole corresponding to the connecting portion 21, and the connecting portion 21 is hot-melt connected to the second mounting hole. The hot-melt connection method is simple to operate and has a reliable connection, and the shaft-hole matching method increases the contact area between the connecting portion 21 and the second mounting hole, further improving the stability of the guide sleeve 2. Specifically, the connecting portion 21 is set as a cylindrical structure, and the matching part of the connecting portion 21 and the second mounting hole is set as a disc structure, wherein the radius of the cylinder is smaller than the radius of the disc, so that the matching area between the connecting portion 21 and the second mounting hole is increased, thereby improving the tightness of the connection between the guide sleeve 2 and the shell 11, so that the guide sleeve 2 will not move with the seat belt during the process of retracting and releasing the seat belt, thereby overcoming the friction caused by the seat belt.

[0052] Furthermore, two connecting parts 21 are provided, and two second mounting holes are provided correspondingly. With such a configuration, the stability of the connection between the guide sleeve 2 and the housing 11 is better, and the configuration of the two connecting parts 21 can better resist torque, thereby alleviating the shear force borne by the matching part between each connecting part 21 and the second mounting hole, and further improving the life of the connection between the guide sleeve 2 and the housing 11.

[0053] In another embodiment provided by the present invention, the connection portion 21 of the guide sleeve 2 is set to a metal material, and the connection portion 21 is connected to the second mounting hole by welding. Among them, the hardness of the metal material is relatively large and the wear resistance is better. By setting the connection portion 21 to a metal material, the anti-interference ability of the connection between the guide sleeve 2 and the housing 11 can be increased. At the same time, the welding connection method has higher stability, and the reliability of the connection can be guaranteed for a long time under normal working conditions, thereby increasing the life of the device.

[0054] In order to strengthen the strength of the mounting frame 3, please refer to Figure 1 In one embodiment of the present invention, a plurality of bosses 33 are provided on the mounting frame 3. The bosses 33 can effectively strengthen the rigidity of the mounting frame 3, increase the force bearing area, disperse the force bearing size, and ensure the stable installation of the reel.

[0055] Furthermore, the mounting frame 3 is provided with a plurality of reinforcing ribs 34. The reinforcing ribs 34 can significantly improve its ability to resist deformation. By increasing the local thickness or changing the cross-sectional shape, the stress can be effectively dispersed to avoid premature yielding of the material. The reinforcing ribs 34 can also help disperse the stress concentration points under cyclic loads, thereby extending the fatigue life of the mounting frame 3, which is particularly important under the driving conditions of the vehicle.

[0056] The present invention further proposes a seat belt device, which includes the above-mentioned retractor structure 1000. Since the seat belt device includes the retractor structure 1000, the specific structure of the retractor structure 1000 refers to the above-mentioned embodiment. Since the retractor structure 1000 of the seat belt device adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0057] The present invention further proposes a vehicle, comprising the above-mentioned seat belt device. Since the vehicle comprises the seat belt device, the specific structure of the seat belt device refers to the above-mentioned embodiment. Since the seat belt device of the vehicle adopts all the technical solutions of all the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described one by one here.

[0058] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A retractor structure, characterized in that: include: The retractor body comprises a shell and a reel disposed inside the shell, the reel extending in a first direction and used to reel in the safety belt, the shell protrudingly provided with a hook in a second direction, and the shell also provided with an outlet for the safety belt on the reel to extend out; a guide sleeve, fixedly mounted at the outlet of the housing, for guiding the safety belt; and The mounting frame is used for being fixedly mounted on the B-pillar of the vehicle body. A first mounting hole is respectively provided on the mounting frame and the shell for being connected by bolts. A card slot is also provided on the mounting frame for hanging the hook. The mounting frame includes a limiting portion, which abuts against the side end of the hook hung in the card slot to limit the rotation of the hook.

2. The retractor structure according to claim 1, characterized in that: The hook extends along a first direction, and a side end of the hook in the first direction abuts against a slot wall of the slot; The limiting portion is configured as a limiting boss, which is protruding from a slot wall of the slot along a first direction and bent along a second direction to form a convex portion abutting against a side end of the hook in the first direction.

3. The retractor structure according to claim 2, characterized in that: The side end of the hook in the first direction is bent along the third direction to form a bent end, and the bent end is in contact with the protrusion.

4. The retractor structure according to claim 2, characterized in that: The side end portion of the hook in the first direction extends along the first direction to form an extended end abutting against the mounting frame in the second direction.

5. The retractor structure according to claim 1, characterized in that: The guide sleeve is provided with a connecting portion, and the connecting portion comprises plastic; A second mounting hole is provided on the shell body corresponding to the connecting portion, and the connecting portion is hot-melt connected to the second mounting hole.

6. The retractor structure according to claim 5, characterized in that: There are two connecting parts, and there are correspondingly two second mounting holes.

7. The retractor structure according to claim 1, characterized in that: A plurality of bosses are arranged on the installation frame.

8. The retractor structure according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged on the installation frame.

9. A seat belt device, characterized in that: The invention comprises a retractor structure as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the seat belt device as claimed in claim 9.

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