Adjustable automobile safety belt

Abstract

The utility model relates to the related technical field of automobile safety belts, in particular to an adjustable automobile safety belt which comprises a safety belt body and a winding mechanism for performing winding and unwinding adjustment on the safety belt body, and the winding mechanism comprises a mounting frame, a first winding piece and a second winding piece, the first winding piece comprises a movable shaft rotationally mounted on the mounting frame, and the end part of the movable shaft is connected with a centrifugal movable unit; the second winding piece comprises a connecting shaft rotationally installed on the installation frame, and one end of the connecting shaft is connected with the centrifugal movable unit through a one-way transmission piece. When a safety belt is rapidly pulled, the movable shaft is driven to rapidly rotate, linkage matching of the centrifugal movable unit and the one-way transmission piece is triggered, and the centrifugal movable unit is driven to rotate rapidly; and the connecting shaft rotates reversely, so that the quick pull-out part of the safety belt is withdrawn, the length of the safety belt is adjusted, and the possibility that a passenger collides with a vehicle body due to looseness of the safety belt in the vehicle is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field related to automobile safety belts, in particular to an adjustable automobile safety belt. Background Art

[0002] The purpose of a car seat belt is to restrain the occupants in a collision and to prevent the occupants from having a secondary collision with the steering wheel and dashboard, or from rushing out of the car and causing death or injury. A car seat belt can also be called a seat belt, which is a type of occupant restraint device. Car seat belts are recognized as the cheapest and most effective safety device, and many countries require the use of seat belts in vehicles.

[0003] Existing car seat belts generally include webbing, retractors, buckles, guides, height adjustment mechanisms, pretensioners and locking devices. When an accident occurs, the webbing will be pulled quickly due to body inertia. After the locking device in the retractor locks the webbing, the webbing cannot continue to be pulled. However, the pulled-out part of the webbing makes it impossible for the passenger to be tight with the seat, causing the risk of the passenger colliding with the vehicle body. Utility Model Content

[0004] The purpose of the utility model is to provide an adjustable automobile safety belt to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An adjustable automobile safety belt comprises a safety belt and a retracting mechanism for performing retraction and extension adjustment on the safety belt, wherein the retracting mechanism comprises a mounting frame and a first winding member and a second winding member arranged on the mounting frame;

[0007] The first winding member comprises a movable shaft rotatably mounted on the mounting frame, and an end of the movable shaft is connected to a centrifugal movable unit;

[0008] The second winding member includes a connecting shaft rotatably mounted on the mounting frame, one end of the connecting shaft is connected to the centrifugal movable unit via a one-way transmission member, so that when the safety belt is quickly pulled and locked, the connecting shaft rotates in the opposite direction to tighten the safety belt.

[0009] The adjustable car safety belt as described above: the centrifugal movable unit comprises a rotating shaft mounted at one end of the movable shaft, a connecting plate is mounted on the rotating shaft, an embedded groove is formed on the connecting plate, a slider is slidably arranged in the embedded groove, and the slider is connected to a moving part mounted on the mounting frame through a hinge rod;

[0010] It also includes a first spring arranged in the embedded groove, one end of the first spring is connected to the sliding block, and the other end abuts against the side of the embedded groove.

[0011] The adjustable car safety belt as described above: the moving part comprises a support shaft, the support shaft is rotatably mounted on the mounting frame through a support plate, the support shaft is arranged along the axial direction of the rotating shaft, a connecting sleeve is slidably arranged on the support shaft, a connecting rod is connected to the connecting sleeve, a collar is rotatably mounted on the connecting sleeve, and one end of the hinged rod away from the slider is rotatably connected to the collar;

[0012] It also includes a cylindrical member rotatably mounted on the support plate, a first transmission ring is axially arranged on one end of the cylindrical member away from the connecting rod, a thread groove is formed on the cylindrical member, one end of the connecting rod away from the connecting sleeve is sleeved on the cylindrical member, and a ball is movably arranged on the connecting rod to rotatably cooperate with the thread groove.

[0013] The adjustable automobile safety belt as described above: a third transmission ring is axially arranged on one end of the connecting shaft.

[0014] The adjustable automobile safety belt as described above: the one-way transmission member comprises a transmission shaft rotatably mounted on the mounting frame and elastic engaging members symmetrically arranged at both ends of the transmission shaft.

[0015] The adjustable car safety belt as described above: the elastic fitting comprises a second transmission ring respectively engaged with the first transmission ring and the third transmission ring, and the second transmission ring is arranged along the axial direction of the transmission shaft;

[0016] It also includes a second spring, which is sleeved on the transmission shaft, one end of the second spring abuts against the transmission ring, and the other end abuts against a convex ring arranged along the axial direction of the transmission shaft.

[0017] As for the adjustable automobile safety belt as described above: at least one group of second limiting grooves are symmetrically formed on the transmission shaft, and a second limiting block which is slidably matched with the second limiting grooves is formed on the second transmission ring.

[0018] Compared with the prior art, the beneficial effect of the utility model is that the centrifugal movable unit and the one-way transmission member are linked to each other by the rapid rotation of the movable shaft, so that the connecting shaft rotates in the opposite direction, so that the part of the safety belt that is quickly pulled out can be retracted, thereby adjusting the length of the safety belt and winding it on the connecting shaft to ensure that the safety belt is always in a taut state when the vehicle body collides, thereby reducing the possibility of passengers colliding with the vehicle body due to loose safety belts in the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a structural schematic diagram of an adjustable automobile safety belt.

[0020] Figure 2 The diagram is a structural diagram of a movable shaft and a connecting shaft in an adjustable automobile safety belt.

[0021] Figure 3 The diagram is a structural diagram of a connecting shaft and a one-way transmission member in an adjustable automobile safety belt.

[0022] Figure 4 It is a schematic diagram of the structure of a one-way transmission part in an adjustable automobile safety belt.

[0023] Figure 5 It is a schematic diagram of the structure of the moving parts in the adjustable car safety belt.

[0024] Figure 6 The figure is a schematic diagram of the structure of the centrifugal movable unit in the adjustable automobile safety belt.

[0025] In the figure: 1, mounting frame; 2, support plate; 3, movable shaft; 301, rotating shaft; 4, connecting plate; 5, slider; 6, first spring; 7, hinged rod; 8, supporting shaft; 801, first limit block; 9, collar; 10, connecting sleeve; 1001, first limit groove; 11, connecting rod; 12, ball; 13, columnar member; 14, first transmission ring; 15, second transmission ring; 1501, second limit block; 16, transmission shaft; 1601, second limit groove; 17, second spring; 18, third transmission ring; 19, connecting shaft. DETAILED DESCRIPTION

[0026] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0027] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0028] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0029] See also Figure 1 to Figure 6 In an embodiment of the utility model, an adjustable automobile safety belt includes a mounting frame 1, a first winding member, a second winding member, a movable shaft 3, a connecting shaft 19, a centrifugal movable unit, and a one-way transmission member.

[0030] For details, please refer to Figure 1 , Figure 2 , Figure 3 ,include;

[0031] A seat belt and a retracting mechanism for retracting and releasing the seat belt, wherein the retracting mechanism comprises a mounting frame 1 and a first winding member and a second winding member arranged on the mounting frame 1;

[0032] The first winding member comprises a movable shaft 3 rotatably mounted on the mounting frame 1, and an end of the movable shaft 3 is connected to a centrifugal movable unit;

[0033] The second winding member includes a connecting shaft 19 rotatably mounted on the mounting frame 1, and one end of the connecting shaft 19 is connected to the centrifugal movable unit through a one-way transmission member, so that when the safety belt is quickly pulled and locked, the connecting shaft 19 rotates in the opposite direction to tighten the safety belt.

[0034] It should be noted that: a locking structure is provided at one end of the movable shaft 3 away from the centrifugal movable unit, and the limiting teeth on the locking structure are installed on the mounting frame 1. When the safety belt is pulled quickly, the movable shaft 3 is driven to rotate quickly, and the centrifugal hammer on the movable shaft 3 generates centrifugal motion and engages with the limiting teeth to realize the locking of the movable shaft 3. At this time, the movable shaft 3 cannot rotate, so that the safety belt cannot continue to be stretched. The locking structure in this utility model belongs to the prior art and no unnecessary elaboration is made in this embodiment.

[0035] The safety belt is threadedly wound around the connecting shaft 19 for one circle. When the safety belt is pulled, the movable shaft 3 and the connecting shaft 19 are driven to rotate synchronously to achieve the length adjustment of the safety belt.

[0036] In detail, in this embodiment, the adjustable automobile safety belt described in the utility model is adopted. When in use, when the movable shaft 3 rotates rapidly, the centrifugal movable unit and the one-way transmission member are linked to make the connecting shaft 19 rotate in the opposite direction, so that the part of the safety belt that is quickly pulled out can be retracted, thereby adjusting the length of the safety belt to ensure that the safety belt is always in a taut state when the vehicle body collides, avoiding the possibility of collision between the passenger in the car and the vehicle body due to loose safety belt.

[0037] See also Figure 4 The centrifugal movable unit includes a rotating shaft 301 installed at one end of the movable shaft 3, a connecting plate 4 is installed on the rotating shaft 301, an embedded groove is formed on the connecting plate 4, a slider 5 is slidably arranged in the embedded groove, and the slider 5 is connected to the moving part installed on the mounting frame 1 through a hinge rod 7;

[0038] It also includes a first spring 6 disposed in the embedded groove, one end of the first spring 6 is connected to the slider 5, and the other end abuts against the side of the embedded groove.

[0039] The moving member includes a support shaft 8, which is rotatably mounted on the mounting frame 1 through a support plate 2, and the support shaft 8 is arranged along the axial direction of the rotating shaft 301. A connecting sleeve 10 is slidably arranged on the support shaft 8, a connecting rod 11 is connected to the connecting sleeve 10, a collar 9 is rotatably mounted on the connecting sleeve 10, and one end of the hinged rod 7 away from the slider 5 is rotatably connected to the collar 9;

[0040] It also includes a cylindrical member 13 rotatably mounted on the support plate 2, a first transmission ring 14 is axially arranged on one end of the cylindrical member 13 away from the connecting rod 11, a thread groove is formed on the cylindrical member 13, one end of the connecting rod 11 away from the connecting sleeve 10 is sleeved on the cylindrical member 13, and a ball 12 rotatably matched with the thread groove is movably arranged on the connecting rod 11.

[0041] To elaborate, when the seat belt is pulled quickly, the movable shaft 3 is driven to rotate, so that the rotating shaft 301 generates centrifugal force, and the connecting plate 4 rotates synchronously, driving the slider 5 thereon to move, and the slider 5 moves toward the side away from the rotating shaft 301, so that the first spring 6 is squeezed to reserve elastic potential energy. When the slider 5 moves, under the action of the hinge rod 7, the ring 9 is driven to rotate and slide relative to the support shaft 8, wherein at least one group of first limit blocks 801 is formed on the support shaft 8, and a first limit groove 1001 that slidably cooperates with the first limit block 801 is formed on the connecting sleeve 10. Under the limiting action of the first limit block 801 and the first limit groove 1001, the sliding connection between the connecting sleeve 10 and the support shaft 8 is realized, and it does not affect the movement of the connecting sleeve 10 when the ring 9 rotates.

[0042] When the connecting sleeve 10 moves, the connecting rod 11 is driven to move accordingly, so that the ball 12 on the connecting rod 11 generates an inclined squeezing force on the side wall of the thread groove, and the columnar member 13 rotates to drive the first transmission ring 14 to rotate synchronously, thereby achieving the driving requirement.

[0043] Preferably, a third transmission ring 18 is axially arranged on one end of the connecting shaft 19 .

[0044] See also Figure 3 , Figure 4 The one-way transmission member includes a transmission shaft 16 rotatably mounted on the mounting frame 1 and elastic engaging members symmetrically arranged at both ends of the transmission shaft 16 .

[0045] The elastic engaging member comprises a second transmission ring 15 respectively engaged with the first transmission ring 14 and the third transmission ring 18, and the second transmission ring 15 is arranged along the axial direction of the transmission shaft 16;

[0046] The second spring 17 is also included. The second spring 17 is sleeved on the transmission shaft 16 . One end of the second spring 17 abuts against the second transmission ring 15 , and the other end abuts against a convex ring axially arranged along the transmission shaft 16 .

[0047] Preferably, the end of the first transmission ring 14 facing the second transmission ring 15 has a plurality of equally spaced slots along the axial direction of the first transmission ring 14 , and the end of the second transmission ring 15 facing the first transmission ring 14 has teeth adapted to the slots.

[0048] In the present invention, the side of the latch tooth facing the slot is arranged in a right-angled triangle structure, and the side of the slot facing the latch tooth is arranged in a right-angled triangle structure. The inclined surface of the latch tooth abuts against the inclined surface of the slot, and the straight surface of the latch tooth abuts against the straight surface of the slot. When the first transmission ring 14 rotates relative to the second transmission ring 15 (at this time, the connecting rod 11 moves toward one end of the first transmission ring 14), when the straight surface of the latch tooth rotates toward the straight surface of the slot, the latch tooth generates an equal pushing force on the slot, so that the second transmission ring 15 can be driven to rotate synchronously when the first transmission ring 14 rotates. When the inclined surface of the latch tooth rotates toward the inclined surface of the slot (the connecting rod 11 moves toward one end of the support plate 2), the latch tooth generates an inclined squeezing force on the slot, so that the first transmission ring 14 can drive the second transmission ring 15 to rotate synchronously. The second transmission ring 15 makes a linear motion along the axial direction of the transmission shaft 16, and the second spring 17 is squeezed to reserve elastic potential energy. In the initial state, the latch tooth is inserted into the slot, and the slot is at the highest end of the stroke. At this time, the right-angled triangle structure formed on the latch tooth is placed between two adjacent slots. When the slot is subjected to an inclined squeezing force, the second transmission ring 15 moves. At this time, due to the action of the inclined surface of the latch tooth, the slot slides along the axial direction of the transmission shaft 16. When the slot is at the top of the stroke, the end of the right-angled triangle structure formed by the latch tooth and the end of the right-angled triangle structure formed by the slot are in the same horizontal plane. The second transmission ring 15 moves until the slot loses its abutment force, and then resets under the elastic action of the second spring 17.

[0049] Furthermore, when the safety belt is pulled, the connecting shaft 19 is driven to rotate accordingly. At this time, the third transmission ring 18 generates an inclined squeezing force on the second transmission ring 15, causing the second transmission ring 15 to give way. When and only when the connecting rod 11 moves toward one end of the first transmission ring 14, the rotation of the columnar member 13 can drive the transmission shaft 16 to rotate synchronously. At this time, the straight surface of the locking tooth on the second transmission ring 15 abuts against the straight surface of the locking groove on the third transmission ring 18, so that when the transmission shaft 16 rotates, it drives the connecting shaft 19 to rotate in the opposite direction, so that the part that is quickly pulled out of the safety belt is retracted, so that the safety belt is in a taut state.

[0050] Preferably, at least one group of second limit grooves 1601 are symmetrically formed on the transmission shaft 16, and a second limit block 1501 that slides with the second limit groove 1601 is formed on the second transmission ring 15. When the second transmission ring 15 moves relative to the transmission shaft 16, the second limit block 1501 is driven to move synchronously, and the limiting effect of the second limit groove 1601 is cooperated to realize the sliding connection between the second transmission ring 15 and the transmission shaft 16, and the second transmission ring 15 is driven to follow the rotation when the transmission shaft 16 rotates without affecting the rotation of the second transmission ring 15.

[0051] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0052] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable automobile safety belt, comprising a safety belt and a retracting mechanism for retracting and extending the safety belt, characterized in that: The reeling mechanism comprises a mounting frame (1) and a first winding member and a second winding member arranged on the mounting frame (1); The first winding member comprises a movable shaft (3) rotatably mounted on the mounting frame (1), and the end of the movable shaft (3) is connected to a centrifugal movable unit; The second winding member comprises a connecting shaft (19) rotatably mounted on the mounting frame (1), one end of the connecting shaft (19) being connected to the centrifugal movable unit via a one-way transmission member, so that when the safety belt is quickly pulled and locked, the connecting shaft (19) rotates in the opposite direction to tighten the safety belt.

2. An adjustable car safety belt according to claim 1, characterized in that: The centrifugal movable unit comprises a rotating shaft (301) mounted on one end of the movable shaft (3), a connecting plate (4) being mounted on the rotating shaft (301), an embedded groove being formed on the connecting plate (4), a sliding block (5) being slidably arranged in the embedded groove, and the sliding block (5) being connected to a moving part mounted on the mounting frame (1) via a hinge rod (7); It also includes a first spring (6) arranged in the embedded groove, one end of the first spring (6) is connected to the slider (5), and the other end abuts against the side of the embedded groove.

3. An adjustable car safety belt according to claim 2, characterized in that: The movable member comprises a support shaft (8), the support shaft (8) being rotatably mounted on the mounting frame (1) via a support plate (2), the support shaft (8) being arranged along the axial direction of the rotating shaft (301), a connecting sleeve (10) being slidably arranged on the support shaft (8), a connecting rod (11) being connected to the connecting sleeve (10), a collar (9) being rotatably mounted on the connecting sleeve (10), and an end of the hinged rod (7) away from the slider (5) being rotatably connected to the collar (9); It also comprises a columnar member (13) rotatably mounted on the support plate (2), a first transmission ring (14) being axially arranged on one end of the columnar member (13) away from the connecting rod (11), a thread groove being formed on the columnar member (13), one end of the connecting rod (11) away from the connecting sleeve (10) being sleeved on the columnar member (13), and a ball (12) rotatably arranged on the connecting rod (11) for rotatably cooperating with the thread groove.

4. An adjustable car safety belt according to claim 3, characterized in that: A third transmission ring (18) is axially arranged on one end of the connecting shaft (19).

5. An adjustable car safety belt according to claim 4, characterized in that: The one-way transmission member comprises a transmission shaft (16) rotatably mounted on the mounting frame (1) and elastic engaging members symmetrically arranged at both ends of the transmission shaft (16).

6. An adjustable car safety belt according to claim 5, characterized in that: The elastic engaging member comprises a second transmission ring (15) respectively engaged with the first transmission ring (14) and the third transmission ring (18), the second transmission ring (15) being arranged along the axial direction of the transmission shaft (16); It also includes a second spring (17), the second spring (17) being sleeved on the transmission shaft (16), one end of the second spring (17) being in contact with the second transmission ring (15), and the other end of the second spring (17) being in contact with a convex ring arranged axially along the transmission shaft (16).

7. An adjustable car safety belt according to claim 6, characterized in that: At least one group of second limiting grooves (1601) is symmetrically formed on the transmission shaft (16), and a second limiting block (1501) that is slidably matched with the second limiting grooves (1601) is formed on the second transmission ring (15).

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