Retractor and vehicle

Abstract

The invention discloses a retractor and a vehicle. The retractor comprises an outer cover, a spindle assembly, a disc sleeved and fixed on the spindle assembly, and an anti-locking disc rotatably connected in the outer cover. The spindle assembly and the disc are rotatably arranged in the outer cover, and an inertia block is elastically connected to the disc. A block limiting arm corresponding to the inertia block is fixed on the anti-locking disc. After the spindle assembly rotates in a preset rewinding direction to a preset limiting starting position relative to the anti-locking disc, the inertia block is radially limited by the corresponding block limiting arm, and after continuing to rotate in the original direction to a preset limiting limit position relative to the anti-locking disc, at least one inertia block can push the anti-locking disc to rotate synchronously with the disc that continues to rotate in the original direction. After the spindle assembly rotates away from each radial limiting position between the preset limiting starting position and the preset limiting limit position relative to the anti-locking disc, the inertia block can overcome the elastic force and swing to lock with the outer cover to stop the spindle assembly from rotating. The retractor reduces the possibility of the spindle assembly being locked after the webbing is rewound.

Description

Technical Field

[0001] The present invention relates to the technical field of safety belts, and in particular to a retractor and a vehicle. Background Art

[0002] The seat belt is equipped with a retractor, which is used to store and lock the webbing. When the vehicle encounters an emergency, the inertia block in the retractor can cooperate with the outer cover of the retractor to lock the spindle assembly and prevent the webbing from being pulled out.

[0003] However, after the user wears the webbing and releases it, when the webbing quickly rewinds to the end, there is a certain probability that it will be locked and cannot be unlocked by non-professionals. For example, if the webbing is quickly pulled out and then let go, the webbing will rewind. After the webbing is rewound to the end, due to the elasticity of the webbing, the webbing will continue to rewind to a certain angle under the action of inertia. Then, the elastically deformed webbing will reset and drive the core shaft assembly to rotate along the direction of the webbing pulling out. During this process, the inertia may swing out of the locking area that is not locked with the outer shell and lock with the outer cover.

[0004] Therefore, how to reduce the possibility of the core shaft assembly being locked after the webbing is a technical problem that technicians in this field currently need to solve. Summary of the invention

[0005] In view of the above, an object of the present invention is to provide a retractor, in which the possibility of the spindle assembly being locked after the webbing is rewound is relatively low. Another object of the present invention is to provide a vehicle including the above retractor, in which the possibility of the spindle assembly being locked after the webbing is rewound is relatively low.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A retractor comprises an outer cover, a spindle assembly and a disc sleeved and fixed on the spindle assembly, the spindle assembly and the disc are rotatably arranged in the outer cover, and an inertia block is elastically connected to the disc; it also comprises an anti-locking disc rotatably connected to the outer cover, and a block limiting arm corresponding to the inertia block is fixed on the anti-locking disc;

[0008] After the spindle assembly rotates in the preset rewinding direction to a preset limit starting position relative to the anti-locking disk, the inertia block is radially limited by the corresponding block limit arm, and after continuing to rotate in the original direction to a preset limit limit position relative to the anti-locking disk, at least one of the inertia blocks can push the anti-locking disk to rotate synchronously with the disk that continues to rotate in the original direction;

[0009] After the spindle assembly rotates away from each radial limit position between the preset limit starting position and the preset limit extreme position relative to the anti-locking disk, the inertia block can swing freely in the radial direction, and the inertia block can overcome the elastic force and swing to lock with the outer cover to stop the rotation of the spindle assembly.

[0010] Preferably, a limit column is fixed on the circular disc, and a disc limit arm is fixed on the anti-locking disc; after the core shaft assembly rotates away from the preset limit starting position along the preset pulling direction and continues to rotate until it is in a preset pushing position relative to the anti-locking disc, the limit column and the disc limit arm abut against each other to push the anti-locking disc to rotate synchronously with the circular disc along the preset pulling direction.

[0011] Preferably, the anti-locking disk is provided with an elastic clamping foot, and a center column coaxial with the spindle assembly is fixed on the outer cover, and the clamping foot is pressed against the center column to provide a pre-tightening force between the anti-locking disk and the center column in the circumferential direction.

[0012] Preferably, the inertia block includes a balance wheel, the middle part of which is connected to the disc by rotating the balance wheel shaft parallel to the spindle assembly, the outer cover is provided with a first locking tooth surface coaxial with the spindle assembly, one end of the balance wheel is connected to the disc through a balance wheel elastic member, and the other end is provided with a balance wheel tooth surface; the balance wheel swings to the balance wheel tooth surface by overcoming the elastic force of the balance wheel elastic member and meshes and locks with the first locking tooth surface, so as to stop the spindle assembly from rotating.

[0013] Preferably, the inertia block also includes a pawl, a pawl column is provided at one end of the pawl in the axial direction, the pawl column is slidably inserted in the pawl groove on the disc, a pawl tooth surface is provided on the pawl, the pawl is connected to the disc through a pawl elastic member, and a second locking tooth surface coaxial with the core shaft assembly is provided on the outer cover; the pawl overcomes the elastic force of the pawl elastic member and swings until the pawl tooth surface is meshed and locked with the second locking tooth surface to stop the rotation of the core shaft assembly.

[0014] Preferably, the pawl and the balance wheel are respectively arranged on both sides of the disc in the axial direction, the pawl column extends into the other side of the disc through the pawl groove, the anti-locking plate and the balance wheel are arranged on the same side of the disc in the axial direction, and the block limiting arm includes a pawl limiting arm cooperating with the pawl column and a balance wheel limiting arm cooperating with the balance wheel.

[0015] Preferably, the outer cover includes a bracket and a locking cover fixedly covered on the axial port of the bracket, the core shaft assembly is arranged in the bracket, the anti-locking disk is connected to the locking cover, the first locking tooth surface is arranged on the locking cover, and the second locking tooth surface is arranged on the bracket.

[0016] Preferably, the balance wheel limiting arm is an L-shaped arm, and the rotation angle of the balance wheel limiting arm is buckled onto the radial inner side of one end of the balance wheel connected to the balance wheel spring to limit the balance wheel in radial direction.

[0017] Preferably, the pawl limiting arm is an arc-shaped arm and the center of the circle is colinear with the axis of the spindle assembly, and the pawl limiting arm radially limits the pawl by blocking the radial outer side of the pawl column.

[0018] A vehicle comprises the retractor as described above.

[0019] The retractor provided by the present invention comprises an outer cover, a spindle assembly and a disc sleeved and fixed on the spindle assembly, the spindle assembly and the disc are rotatably arranged in the outer cover, and an inertia block is elastically connected to the disc; and the retractor also comprises an anti-locking disc rotatably connected to the outer cover, and a block limiting arm corresponding to the inertia block is fixed on the anti-locking disc. After the spindle assembly rotates along the preset rewinding direction to a preset limiting starting position relative to the anti-locking disc, the inertia block is radially limited by the corresponding block limiting arm, and after continuing to rotate in the original direction to a preset limiting limit position relative to the anti-locking disc, at least one inertia block can push the anti-locking disc to rotate synchronously with the disc that continues to rotate in the original direction. After the spindle assembly rotates away from each radial limiting position between the preset limiting starting position and the preset limiting limit position relative to the anti-locking disc, the inertia block can swing freely in the radial direction, and the inertia block can overcome the elastic force and swing to lock with the outer cover to stop the spindle assembly from rotating.

[0020] If the webbing is reversely driven by the elastic force of the webbing after it is rolled back to the end, the anti-locking plate does not move during the counterclockwise flipping of the spindle assembly, and the spindle assembly needs to move counterclockwise from the preset limit position to the preset limit initial position. During this process, the block limit arm always limits the corresponding inertia block radially to prevent the inertia block from being locked on the outer cover due to inertia at the beginning of the spindle assembly rotation, thereby reducing the possibility of the spindle assembly being locked after the webbing is rolled back. In addition, the radial limit of the inertia block can reduce the collision between the inertia block and the outer cover, and improve the problem of excessive noise of the retractor belt sensor assembly during vehicle operation.

[0021] In the vehicle including the retractor provided by the present invention, the possibility of the core shaft assembly being locked after the webbing in the retractor is rewound is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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 embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the retractor provided by the present invention when the disc is in a preset pushing position relative to the anti-locking disc;

[0024] Figure 2 It is a schematic diagram of the retractor provided by the present invention when the disc is at a preset limit position relative to the anti-locking disc;

[0025] Figure 3 A structural diagram of the anti-locking disk in the retractor provided by the present invention;

[0026] Figure 4 A structural diagram of a lock cover in a retractor provided by the present invention;

[0027] Figure 5 A diagram showing the connection structure between the lock cover and the anti-locking disk in the retractor provided by the present invention;

[0028] Figure 6 A diagram showing the connection structure between the pawl and the disc in the retractor provided by the present invention;

[0029] Figure 7 This is a structural diagram of the connection between the pawl, the balance wheel and the disc in the retractor provided by the present invention;

[0030] Figure 8 This is a structural diagram of the connection between the pawl, the balance wheel and the anti-locking disk in the retractor provided by the present invention;

[0031] Fig. 9 A structural diagram of the first part of the interior of the outer cover of the retractor provided by the present invention;

[0032] Fig.10 A second structural diagram of the interior of the outer cover of the retractor provided by the present invention;

[0033] Fig.11 A diagram showing the connection structure between the bracket and the pawl in the retractor provided by the present invention;

[0034] Fig.12 This is a structural diagram of the connection between the lock cover and the balance wheel in the retractor provided by the present invention;

[0035] Fig.13 This is an appearance diagram of the retractor provided by the present invention.

[0036] Reference numerals:

[0037] Spindle assembly 1, disc 2, disc outer teeth 21, pawl groove 22, limiting column 23, anti-locking disc 3, card foot 31, disc limiting arm 32, balance wheel limiting arm 33, pawl limiting arm 34, pawl elastic member 4, pawl 5, pawl tooth surface 51, pawl column 52, balance wheel 6, balance wheel tooth surface 61, positioning end A, lock cover 7, first locking tooth surface 71, center column 72, bracket 8, second locking tooth surface 81, balance wheel elastic member 9, DETAILED DESCRIPTION

[0038] 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 creative work are within the scope of protection of the present invention.

[0039] The core of the present invention is to provide a retractor, in which the possibility of the spindle assembly being locked after the webbing is rewound is relatively low. Another core of the present invention is to provide a vehicle including the above retractor, in which the possibility of the spindle assembly being locked after the webbing is rewound is relatively low.

[0040] It should be noted that when an element is referred to as "fixing" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. The orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0042] In a specific embodiment of the retractor provided by the present invention, please refer to Figures 1 to 13 , including an outer cover, a spindle assembly 1 and a disc 2 sleeved and fixed on the spindle assembly 1. The spindle assembly 1 and the disc 2 are rotatably arranged in the outer cover. An inertia block is elastically connected to the disc 2. The spindle assembly 1 is used to wind the webbing. The outer circumference of the disc 2 is provided with a disc outer tooth 21, which is used to lock the spindle assembly 1 in cooperation with the vehicle sensing assembly.

[0043] The retractor further comprises an anti-locking disc 3 rotatably connected to the outer cover, and a block limiting arm corresponding to the inertia block is fixed on the anti-locking disc 3 .

[0044] The preset limit starting position and the preset limit limit position are the positions of the disc 2 with the anti-locking disc 3 as a reference. For example, with the anti-locking disc 3 as a stationary reference, the disc 2 reaches the preset limit starting position after rotating clockwise by a set first angle relative to the anti-locking disc 3, and then reaches the preset limit limit position after rotating clockwise by a second angle.

[0045] The spindle assembly 1 rotates along the preset rewinding direction ( Figure 2 When the webbing is rewound in the retractor (in the C direction), the webbing is rewound in the retractor. After the spindle assembly 1 rotates along the preset rewinding direction to the preset limit starting position relative to the anti-locking disk 3, the inertia block is radially limited by the corresponding block limit arm to prevent the inertia block from locking with the outer cover. Figure 2 As shown, after continuing to rotate in the original direction to a preset limit position relative to the anti-locking disk 3, at least one inertia block can push the corresponding block limit arm in the circumferential direction, so that the anti-locking disk 3 rotates synchronously with the disk 2 which continues to rotate in the original direction.

[0046] After the spindle assembly 1 rotates away from the radial limit positions between the preset limit starting position and the preset limit extreme position relative to the anti-locking disk 3, the inertia block can swing freely in the radial direction. The inertia block can overcome the elastic force and swing to lock with the outer cover to stop the spindle assembly 1 from rotating.

[0047] If the webbing is reversely driven by the elastic force of the webbing after it is rolled back to the end, the anti-locking plate 3 does not move during the counterclockwise rotation of the spindle assembly 1, and the spindle assembly 1 needs to be first Figure 2 The preset limit position in the inertia block moves counterclockwise to the preset limit initial position. During this process, the block limit arm always limits the corresponding inertia block in the radial direction, preventing the inertia block from being locked on the outer cover due to inertia at the beginning of the rotation of the core shaft assembly 1, thereby reducing the possibility of the core shaft assembly 1 being locked after the webbing is rewound. In addition, the radial limit of the inertia block can reduce the collision between the inertia block and the outer cover, and improve the problem of excessive sound of the retractor belt sensor assembly during vehicle operation.

[0048] In addition, during the process that the spindle assembly 1 moves from the preset limit initial position along the preset rewinding direction to the preset limit limit position relative to the anti-locking disk 3, the anti-locking disk 3 can always radially limit the inertia block. The angle of rotation required for this process is preferably set to a smaller value. In case of an emergency situation where the webbing needs to be pulled out quickly, even if the spindle assembly 1 starts to rotate along the preset pulling direction from the preset limit limit position, due to the high rotation speed of the spindle assembly 1, the spindle assembly 1 can quickly rotate away from each radial limit position between the preset limit initial position and the preset limit limit position. Then, the inertia block swings radially under the action of inertia to lock on the outer cover, thereby stopping the spindle assembly 1 and ensuring the emergency locking function of the retractor.

[0049] For further information, please refer to Figure 1The disc 2 is fixed with a limiting column 23, and the anti-locking disc 3 is fixed with a disc limiting arm 32. The spindle assembly 1 is pulled out along the preset direction ( Figure 1 After the anti-locking plate 3 is rotated away from the preset limit starting position (in the B direction) and continues to rotate to the preset pushing position relative to the anti-locking plate 3, the limit post 23 abuts against the plate limit arm 32 to push the anti-locking plate 3 to rotate synchronously with the disc 2 along the preset pulling direction. During the webbing pulling process, the core shaft assembly 1 rotates along the preset pulling direction under the pulling of the webbing.

[0050] The anti-locking disc 3 is driven by the disc 2 to rotate synchronously along the preset pulling direction, which can effectively ensure that the inertia block will not move to the position radially limited by the block limiting arm during the webbing pulling process.

[0051] Furthermore, if Figures 3 to 5 As shown, the anti-locking plate 3 is provided with an elastic foot 31, and a central column 72 coaxial with the spindle assembly 1 is fixedly provided on the outer cover, and the foot 31 is pressed against the central column 72, so that there is a pre-tightening force between the anti-locking plate 3 and the central column 72 in the circumferential direction.

[0052] The clamping foot 31 presses the center column 72 to provide a certain pre-tightening force for the anti-locking disk 3, so that the anti-locking disk 3 can rotate synchronously with the outer cover without being pushed by the limit column 23 or the inertia block, thereby preventing the anti-locking disk 3 from rotating at will and affecting the normal rotation of the disc 2. Under the push of the limit column 23 or the inertia block, the anti-locking disk 3 can overcome the pre-tightening force and rotate around the center column 72.

[0053] Furthermore, if Figure 5 , Figure 7 and Fig.12 As shown, the inertia block includes a balance wheel 6, the middle part of which is connected to the disc 2 by rotating the balance wheel 6 axis parallel to the spindle assembly 1, and the outer cover is provided with a first locking tooth surface 71 arranged coaxially with the spindle assembly 1. One end of the balance wheel 6 is connected to the disc 2 through a balance wheel elastic member 9 to achieve elastic connection with the disc 2, and the other end of the balance wheel 6 is provided with a balance wheel tooth surface 61. The balance wheel 6 swings to the balance wheel tooth surface 61 and meshes and locks with the first locking tooth surface 71 by overcoming the elastic force of the balance wheel elastic member 9, so as to stop the spindle assembly 1 from rotating.

[0054] Under normal driving conditions, the webbing can be pulled out freely, and the spindle assembly 1 rotates along the preset pulling direction. The elastic force provided by the balance wheel elastic member 9 can prevent the balance wheel tooth surface 61 from moving toward the first locking tooth surface 71, that is, Figure 1 In the embodiment, the balance wheel elastic member 9 can prevent the balance wheel 6 from swinging clockwise around its balance wheel 6 axis on the disc 2. When an emergency occurs, the inertial force of the balance wheel 6 is greater than the elastic force of the balance wheel elastic member 9. Figure 1The balance wheel 6 will overcome the elastic force of the balance wheel elastic member 9 and swing clockwise on the disc 2 relative to its balance wheel 6 axis to engage with the first locking tooth surface 71 on the locking cover to limit the rotation of the spindle assembly 1.

[0055] For further information, please refer to Figure 1 , Figure 6 , Figure 7 and Fig.11 The inertia block also includes a pawl 5. A pawl column 52 is provided at one end of the pawl 5 in the axial direction. The pawl column 52 is slidably inserted into the pawl groove 22 on the disk 2. The pawl 5 is provided with a pawl tooth surface 51. The pawl 5 is connected to the disk 2 through the pawl elastic member 4. A second locking tooth surface 81 coaxial with the spindle assembly 1 is provided on the outer cover. The pawl 5 swings to the pawl tooth surface 51 and meshes and locks with the second locking tooth surface 81 by overcoming the elastic force of the pawl elastic member 4, so as to stop the spindle assembly 1 from rotating.

[0056] by Figure 1 Taking the position shown as an example, under normal driving conditions, the webbing can be pulled out freely, and the spindle assembly 1 rotates along the preset pulling direction. The elastic force provided by the pawl elastic member 4 can prevent the pawl tooth surface 51 from moving toward the second locking tooth surface 81, that is, Figure 1 In the embodiment, the pawl elastic member 4 can prevent the pawl column 52 from sliding radially outward in the pawl groove 22, and when an emergency occurs, Figure 1 The pawl 5 overcomes the elastic force of the pawl elastic member 4 and slides radially outward on the disk 2 so that the pawl tooth surface 51 engages with the second locking tooth surface 81 on the locking cover to limit the rotation of the spindle assembly 1.

[0057] Furthermore, if Figure 6 and Figure 7 As shown, the pawl 5 and the balance wheel 6 are respectively arranged on both sides of the disc 2 in the axial direction, and the pawl column 52 extends into the other side of the disc 2 through the pawl groove 22. The anti-locking disc 3 and the balance wheel 6 are arranged on the same side of the disc 2 in the axial direction. The block limit arm includes a pawl limit arm 34 matched with the pawl column 52 and a balance wheel limit arm 33 matched with the balance wheel 6. The pawl 5 and the balance wheel 6 are respectively arranged on both sides of the disc 2, so that the disc 2 can be fully limited and locked, and the pawl 5 and the balance wheel 6 can be prevented from interfering with each other.

[0058] Furthermore, if Fig.11 , Fig.12 and Fig.13 As shown, the outer cover includes a bracket 8 and a locking cover 7 fixedly covering the axial port of the bracket 8. The spindle assembly 1 is arranged in the bracket 8, the anti-locking disk 3 is connected to the locking cover 7, and the first locking tooth surface 71 is arranged on the locking cover 7. The second locking tooth surface 81 is arranged on the bracket 8. The locking cover 7 and the bracket 8 cooperate to form the outer cover as a whole, which is easy to assemble.

[0059] Furthermore, if Figure 2 , Figure 3 and Figure 8 As shown, the balance wheel limiting arm 33 is an L-shaped arm, and the rotation angle of the balance wheel limiting arm 33 is buckled on the radial inner side of one end of the spring connected to the balance wheel 6 to limit the radial position of the balance wheel 6. At this time, the balance wheel limiting arm 33 can be pushed by the balance wheel 6 to drive the anti-locking disk 3 to rotate synchronously with the disk 2 along the preset rewinding direction. Figure 2 As shown, when the disc 2 moves to the preset limit position relative to the anti-locking disc 3, the top angle A of the balance wheel 6 is tightly fitted with the rotation angle of the balance wheel limit arm 33. As the disc 2 continues to rotate in the original direction, the balance wheel 6 will push the balance wheel limit arm 33 to drive the anti-locking disc 3 to rotate synchronously. The structure is simple and the pushing operation is relatively reliable.

[0060] Furthermore, the pawl limiting arm 34 is an arc-shaped arm and the center of the circle is colinear with the axis of the spindle assembly 1 . The pawl limiting arm 34 radially limits the pawl 5 by blocking the radial outer side of the pawl column 52 .

[0061] The working principle of the retractor provided in this embodiment is as follows: Figure 1 As shown, when the webbing is pulled out, the disc 2 rotates clockwise with the spindle assembly 1, and the anti-locking disc 3 does not move. After rotating a certain angle, the anti-locking disc 3 moves clockwise synchronously with the disc 2 under the push of the disc 2. At this time, the pawl 5 and the balance wheel 6 can swing out normally. Figure 2 As shown, when the webbing is rewound, the disc 2 rotates counterclockwise with the core shaft assembly 1, and the anti-locking disc 3 does not move. After rotating a certain angle, the anti-locking disc 3 moves counterclockwise synchronously with the disc 2 under the push of the disc 2. At this time, the pawl 5 and the balance wheel 6 are radially limited and cannot swing out normally.

[0062] In addition to the above retractor, the present invention further provides a vehicle including a retractor, which can be any of the above embodiments. The beneficial effects can be referred to the above embodiments. The other structures of the vehicle can be referred to the prior art, which will not be described in detail in this application.

[0063] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0064] The above is a detailed introduction to the retractor and vehicle provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A retractor, comprising an outer cover, a spindle assembly (1) and a disc (2) sleeved and fixed on the spindle assembly (1), the spindle assembly (1) and the disc (2) being rotatably arranged in the outer cover, and an inertia block being elastically connected to the disc (2); characterized in that: It also comprises an anti-locking plate (3) rotatably connected to the outer cover, and a block limiting arm corresponding to the inertia block is fixed on the anti-locking plate (3); After the spindle assembly (1) rotates in a preset rewinding direction to a preset limit starting position relative to the anti-locking disk (3), the inertia block is radially limited by the corresponding block limit arm, and after continuing to rotate in the original direction to a preset limit limit position relative to the anti-locking disk (3), at least one of the inertia blocks can push the anti-locking disk (3) to rotate synchronously with the disk (2) that continues to rotate in the original direction; After the spindle assembly (1) rotates away from each radial limit position between the preset limit start position and the preset limit limit position relative to the anti-locking disk (3), the inertia block can swing freely in the radial direction, and the inertia block can overcome the elastic force and swing to lock with the outer cover to stop the spindle assembly (1); A limiting column (23) is fixedly arranged on the disc (2), and a disc limiting arm (32) is fixedly arranged on the anti-locking disc (3); after the spindle assembly (1) rotates away from the preset limiting starting position along the preset pulling direction and continues to rotate until it is in a preset pushing position relative to the anti-locking disc (3), the limiting column (23) abuts against the disc limiting arm (32) to push the anti-locking disc (3) to rotate synchronously with the disc (2) along the preset pulling direction; The anti-locking disk (3) is provided with an elastic clamping foot (31), and a central column (72) coaxial with the spindle assembly (1) is fixed on the outer cover, and the clamping foot (31) is pressed against the central column (72) so that a pre-tightening force is provided between the anti-locking disk (3) and the central column (72) in the circumferential direction; The inertia block comprises a balance wheel (6), the middle part of which is rotatably connected to the disc (2) via a balance wheel shaft parallel to the spindle assembly (1), the outer cover is provided with a first locking tooth surface (71) coaxial with the spindle assembly (1), one end of the balance wheel (6) is connected to the disc (2) via a balance wheel elastic member (9), and the other end is provided with a balance wheel tooth surface (61); the balance wheel (6) swings to the balance wheel tooth surface (61) and meshes and locks with the first locking tooth surface (71) by overcoming the elastic force of the balance wheel elastic member (9), so as to stop the spindle assembly (1) from rotating.

2. The retractor according to claim 1, characterized in that: The inertia block further comprises a pawl (5), wherein a pawl column (52) is provided at one end of the pawl (5) in the axial direction, wherein the pawl column (52) is slidably inserted into a pawl groove (22) on the disk (2), wherein a pawl tooth surface (51) is provided on the pawl (5), wherein the pawl (5) is connected to the disk (2) via a pawl elastic member (4), and wherein a second locking tooth surface (81) coaxial with the spindle assembly (1) is provided on the outer cover; the pawl (5) swings to the point where the pawl tooth surface (51) meshes and locks with the second locking tooth surface (81) by overcoming the elastic force of the pawl elastic member (4), thereby stopping the spindle assembly (1) from rotating.

3. The retractor according to claim 2, characterized in that: The pawl (5) and the balance wheel (6) are respectively arranged on two sides of the disc (2) in the axial direction, the pawl column (52) extends into the other side of the disc (2) through the pawl groove (22), the anti-locking plate (3) and the balance wheel (6) are arranged on the same side of the disc (2) in the axial direction, and the block limiting arm comprises a pawl limiting arm (34) matched with the pawl column (52) and a balance wheel limiting arm (33) matched with the balance wheel (6).

4. The retractor according to claim 3, characterized in that: The outer cover comprises a bracket (8) and a locking cover (7) fixedly covering an axial port of the bracket (8), the spindle assembly (1) is arranged in the bracket (8), the anti-locking disk (3) is connected to the locking cover (7), the first locking tooth surface (71) is arranged on the locking cover (7), and the second locking tooth surface (81) is arranged on the bracket (8).

5. The retractor according to claim 3, characterized in that: The balance wheel limiting arm (33) is an L-shaped arm, and the rotation angle of the balance wheel limiting arm (33) is engaged with the radial inner side of one end of the spring of the balance wheel (6) connected to the balance wheel (6) to limit the balance wheel (6) in the radial direction.

6. The retractor according to claim 3, characterized in that: The pawl limiting arm (34) is an arc-shaped arm, the center of which is colinear with the axis of the spindle assembly (1); the pawl limiting arm (34) radially limits the pawl (5) by blocking the radial outer side of the pawl column (52).

7. A vehicle, characterized in that: A retractor comprising the retractor according to any one of claims 1 to 6.

Images