Automatic seat belt device

Abstract

The utility model relates to the technical field of seat safety belts, and discloses a seat safety belt automatic device which comprises a safety belt guide arm, a seat, a safety belt running mechanism and a circuit control element. A left safety belt guide arm and a right safety belt guide arm are arranged on the safety belt guide arm in the direction of a seat, a lock catch, at least three left guide blocks and a hinge are arranged in the left safety belt guide arm, and a spring bolt, at least three right guide blocks and a hinge are arranged in the right safety belt guide arm. According to the seat safety belt automatic device, the circuit control element, the safety belt running mechanism, the left guide block and the right guide block are arranged, the safety belt running mechanism can be controlled through the circuit control element, and therefore the left guide block and the right guide block are controlled, and the seat safety belt automatic device has the advantages of being easy to operate, convenient, practical, stable in running, safe, reliable and the like. The seat is suitable for passenger seats of trains, airplanes, passenger cars and the like, and riding experience is improved while safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of seat safety belts, in particular to an automatic seat safety belt device. Background Art

[0002] At present, passenger seat safety belts in trains, airplanes, buses and other transportation vehicles are generally two-point waist belts. The webbing of the two-point safety belt is hung from both sides of the passenger's waist to the abdomen, shaped like a waist belt, which can prevent the passenger's body from moving forward or being thrown out of the car in a collision accident. The advantage is that the structure is simple and easy to release. The disadvantage is that it does not have an automated function and requires manual operation. It is easy to be placed randomly after use, and the placement position is not fixed, which affects the passengers' seating. The utility model is mainly based on the automation function and can automatically reset, which ensures stability and safety while making the operation more convenient. Utility Model Content

[0003] The utility model aims to provide a seat belt automatic device to solve the problem that the two-point seat belt proposed in the background technology does not have an automatic function and the position of the seat belt is not fixed.

[0004] To achieve the above object, the utility model provides the following technical solutions: a seat belt automatic device, comprising a seat belt guide arm, a seat, a seat belt running mechanism and a circuit control element; the seat belt guide arm has a left seat belt guide arm and a right seat belt guide arm according to the seat orientation, the left seat belt guide arm is provided with a lock buckle, at least three left guide blocks and a hinge inside, the right seat belt guide arm is provided with a lock tongue, at least three right guide blocks and a hinge inside, and the left guide block and the right guide block are both provided with a rubber pad on one side close to each other;

[0005] The seat belt operating mechanism is composed of a driving motor, a first gear, a second gear, a double-groove pulley, a guide wheel, a traction steel rope, a seat belt webbing and a seat belt retractor, and the operating mechanism is placed inside the seat back;

[0006] The circuit control elements are composed of a self-resetting normally open button SB1, a self-resetting normally closed switch SB2, a contactor KM, an overload relay FR, and a fuse FU. The self-resetting normally closed switch SB2 in the circuit control element is placed inside the lock, and the self-resetting normally open button SB1 is set on the seat armrest.

[0007] As a further improvement of the present invention, the inner sides of both ends of the left guide block and the right guide block are provided with inclined surfaces with a certain angle, and the angle of the inclined surface is 90 / (n-1), wherein n is the number of guide blocks. After the adjacent inclined edges between the left guide block and the right guide block are fully fitted into place, the left guide block and the right guide block each bend inward 90 degrees.

[0008] As a further improvement of the present invention, a spring is provided in the seat belt reel, the left guide block and the right guide block are respectively connected to the traction steel rope, and the left guide block and the right guide block are respectively connected to the seat belt reel by means of the seat belt webbing, the seat belt webbing is wound around the inside of the seat belt reel, and the left guide block and the right guide block are respectively connected to the lock buckle and the lock tongue at a position away from the seat.

[0009] As a further improvement of the utility model, hinges are provided on upper and lower planes at the junction of each adjacent left guide block and right guide block in the seat belt guide arm to connect the adjacent left guide block and right guide block.

[0010] As a further improvement of the present invention, the outsides of the left guide block and the right guide block are both covered with dust covers made of flexible materials of corresponding sizes.

[0011] As a further improvement of the utility model, the outer cylindrical wall of the double-groove pulley is provided with two grooves, the number of the traction steel ropes is two, one end of the two traction steel ropes are fixedly connected to the two grooves of the double-groove pulley, the winding direction of the two traction steel ropes on the double-groove pulley is consistent with the driving direction of the double-groove pulley, and the guide wheel is used to guide the traction steel ropes.

[0012] As a further improvement of the utility model, a one-way bearing is provided in the double-groove pulley, and the double-groove pulley is rotatably connected to the inside of the seat back. The one-way bearing is locked in the driving direction of the double-groove pulley and rotates freely in the other direction. The inner ring of the one-way bearing is fixed between the transmission shaft of the second gear, and the outer ring of the one-way bearing is installed in the double-groove pulley and is concentric with and fixed to the double-groove pulley. The drive motor is fixed inside the seat back, and the output shaft of the drive motor is fixedly sleeved with a first gear, and the outer teeth of the first gear and the second gear are meshed with each other.

[0013] As a further improvement of the present invention, the diameter value of the first gear is smaller than the diameter value of the second gear.

[0014] As a further improvement of the present invention, the self-resetting normally closed switch SB2 in the circuit control element is placed inside the lock.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The seat belt automatic device, by setting a circuit control element, a seat belt operating mechanism, and a left guide block and a right guide block, can control the seat belt operating mechanism through the circuit control element control, thereby controlling the left guide block and the right guide block. It has the characteristics of simple operation, convenience and practicality, smooth operation, safety and reliability, etc. It is suitable for passenger seats in trains, airplanes, buses, etc., and improves the riding experience while ensuring safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a rendering of the automatic seat belt device of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the left guide block of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the right guide block of the utility model;

[0020] Figure 4 This is a schematic diagram of the cooperation between the guide block and the hinge of the utility model;

[0021] Figure 5 It is a schematic diagram of the position of the automatic seat belt device of the utility model after being deployed;

[0022] Figure 6 It is a schematic diagram of the position of the automatic seat belt device of the utility model after closing;

[0023] Figure 7 It is a circuit connection diagram of the circuit element of the utility model.

[0024] In the figure: 1. seat belt retractor; 2. seat belt webbing; 3. left guide block; 4. right guide block; 5. locking tongue; 6. buckle; 7. hinge; 8. double-groove pulley; 9. first gear; 10. second gear; 11. drive motor; 12. guide wheel; 13. traction steel rope; 14. steel rope hole; 15. webbing slot hole; 16. wire hole; 17. seat belt guide arm; 17a. left seat belt guide arm; 17b. right seat belt guide arm; 18. seat. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-Figure 5As shown: a seat belt automatic device, including a seat belt guide arm 17, a seat 18, a seat belt operating mechanism and a circuit control element; the seat belt guide arm 17 is provided with a left seat belt guide arm 17a and a right seat belt guide arm 17b according to the direction of the seat 18, the left seat belt guide arm 17a is provided with a lock buckle 6, at least two left guide blocks 3 and a hinge 7, the right seat belt guide arm 17b is provided with a lock tongue 5, at least two right guide blocks 4 and a hinge 7, and the left guide block 3 and the right guide block 4 are provided with rubber pads on the side close to each other; the left guide block 3 is provided with a webbing slot 15, a steel rope hole 14 and a wire hole 16; the right guide block 4 is provided with a webbing slot 15 and a steel rope hole 14.

[0027] The seat belt running mechanism is composed of a driving motor 11, a first gear 9, a second gear 10, a double-groove pulley 8, a guide wheel 12, a traction steel rope 13, a seat belt webbing 2 and a seat belt retractor 1, and the running mechanism is placed inside the backrest of the seat 18;

[0028] A safety belt webbing 2 passes through the webbing slot holes 15 on each left guide block 3 in sequence and is fixedly connected to the lock buckle 6 , and a traction steel rope 13 passes through the steel rope holes 14 on each left guide block 3 in sequence and is fixedly connected to the lock buckle 6 .

[0029] Another safety belt webbing 2 passes through the webbing slot holes 15 on each right guide block 4 in sequence and is fixed to the locking tongue 5 , and another traction steel rope 13 passes through the steel rope holes 14 on each right guide block 4 in sequence and is fixed to the right guide block 4 at the position of the hole below the locking tongue 5 .

[0030] like Figure 7 As shown, the circuit control elements are composed of a self-resetting normally open button SB1, a self-resetting normally closed switch SB2, a contactor KM, an overload relay FR, and a fuse FU. The self-resetting normally closed switch SB2 in the circuit control element is placed inside the lock 6, and the self-resetting normally open button SB1 is set on the armrest of the seat 18.

[0031] The switch control wire on the circuit control element passes through the wire holes 16 on each left guide block 3 in turn and is connected to the self-resetting normally closed switch SB2 in the lock buckle 6.

[0032] The inner sides of both ends of the left guide block 3 and the right guide block 4 are provided with inclined surfaces with a certain angle, and the angle of the inclined surfaces is 90 / (n-1), where n is the number of guide blocks. After the adjacent inclined edges between the left guide block 3 and the right guide block 4 are fully fitted into place, the left guide block 3 and the right guide block 4 each bend inward 90 degrees.

[0033] A spring is provided inside the seat belt reel 1, and the left guide block 3 and the right guide block 4 are respectively connected to the traction steel rope 13, and the left guide block 3 and the right guide block 4 are respectively connected to the seat belt reel 1 by means of the seat belt webbing 2, the seat belt webbing 2 is wound around the inside of the seat belt reel 1, and the left guide block 3 and the right guide block 4 are respectively connected to the lock buckle 6 and the lock tongue 5 at a position away from the seat 18.

[0034] A hinge 7 is provided on the upper and lower planes of the joints of the adjacent left guide blocks 3 and right guide blocks 4 in the seat belt guide arm 17 to connect the adjacent left guide blocks 3 and right guide blocks 4 to prevent misalignment between the guide blocks.

[0035] The outside of the left guide block 3 and the right guide block 4 are both covered with flexible dust covers of corresponding sizes to prevent dust and foreign matter from entering the guide arm.

[0036] The outer cylindrical wall of the double-groove pulley 8 is provided with two grooves, and there are two traction steel ropes 13. One end of the two traction steel ropes 13 is fixedly connected to the two grooves of the double-groove pulley 8. The winding direction of the two traction steel ropes 13 on the double-groove pulley 8 is consistent with the driving direction of the double-groove pulley 8, and the guide wheel 12 is used to guide the traction steel ropes 13.

[0037] A one-way bearing is provided inside the double-groove pulley 8, and the double-groove pulley 8 is rotatably connected to the inside of the backrest of the seat 18. The one-way bearing is locked in the driving direction of the double-groove pulley 8 and rotates freely in the other direction. The inner ring of the one-way bearing is fixed between the transmission shaft of the second gear 10, and the outer ring of the one-way bearing is installed in the double-groove pulley 8 and is concentric with the double-groove pulley 8 and fixed. The drive motor 11 is fixed inside the backrest of the seat 18, and the output shaft of the drive motor 11 is fixedly sleeved with the first gear 9, and the outer teeth of the first gear 9 and the second gear 10 are meshed with each other.

[0038] The diameter of the first gear 9 is smaller than the diameter of the second gear 10 .

[0039] The self-resetting normally closed switch SB2 in the circuit control element is placed inside the lock 6, and other elements in the circuit control element are placed inside the backrest of the seat 18 or other positions outside the seat 18.

[0040] The driving motor 11, double groove pulley 8, guide wheel 12 and reel 1 in the safety belt running mechanism are installed on a bracket inside the backrest of the seat 18. The traction steel rope 13 is respectively placed in the groove of the double groove pulley 8 and fixed after being changed by the guide wheel 12. The lock buckle 6 is provided with an unlocking button.

[0041] The working principle and working process of the device of this application are as follows:

[0042] Please also refer to Figure 1 , Figure 5 and Figure 6As shown in the figure: the automatic seat belt device is installed on the seat 18 through the bracket inside the seat back 18, and the two seat belt guide arms 17 are installed on both sides of the seat back 18 close to the armrests of the seat 18 or embedded in the armrests. The seat belt guide arms 17 are parallel to the armrests of the seat 18, and the mechanism is in the initial state.

[0043] After the passenger takes his seat, he presses the start button SB1 of the seat belt device to start the motor, drives the first gear 9 to rotate and drives the second gear 10 and the double-groove pulley 8 in sequence. While the double-groove pulley 8 rotates, it pulls the traction steel rope 13 inward and reels it. The left guide block 3 and the right guide block 4 are pulled back from the parallel initial state by the traction of the traction steel rope 13. During the bending process, the seat belt webbing 2 is pulled out, and the lock tongue 5 and the lock buckle 6 are driven to bend back 90°, so that the lock tongue 5 enters the lock buckle 6. When the lock tongue 5 reaches the buckled position in the lock buckle 6, it touches the self-resetting normally closed switch SB2 inside the lock buckle 6 and disconnects the circuit. The drive motor 11 stops running, and the seat belt lock buckle 6 is completed. At the same time, during the operation of the automatic seat belt device, if the left guide block 3 and the right guide block 4 are misaligned, or there is an obstacle between the left guide block 3 and the right guide block 4, causing the lock tongue 5 to be unable to buckle into the lock buckle 6, the overload relay FR will be activated, thereby cutting off the power supply of the circuit, so that the left guide block 3 and the right guide block 4 are automatically reset under the action of the rewinding spring inside the seat belt retractor 1, so as to protect the personnel and the automatic seat belt device.

[0044] When the passenger needs to leave the seat, he presses the unlock button on the lock buckle 6, and the seat belt webbing 2 is wound up under the action of the rewinding spring inside the seat belt retractor 1, and the lock tongue 5 is pulled out of the lock buckle 6, and the traction steel rope 13 is pulled out from the double groove pulley 8. Since the one-way bearing inside the double groove pulley 8 rotates freely in the direction opposite to the driving direction, when the traction steel rope 13 is pulled out from the double groove pulley 8, only the double groove pulley 8 rotates, and the motor 11, the first gear 9 and the second gear 10 do not generate load during the pulling process of the traction steel rope 13. Finally, under the action of the seat belt retractor 1, the left guide block 3 and the right guide block 4 are gradually pulled back to the straight initial state, and are respectively located in the two seat belt guide arms 17, and the seat belt reset action is completed.

[0045] The automatic seat belt device can be buckled automatically or by manually pulling out the seat belt. The lock tongue 5 and the lock buckle 6 are conveniently accessible near the armrest. When manually pulling the guide arm, only the spring resistance of the retractor needs to be overcome. The mechanism does not generate too much load on the seat belt webbing. Since the running trajectories of the two guide arms have been set, manual buckling is relatively smooth.

[0046] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A seat belt automatic device, characterized in that: The invention comprises a seat belt guide arm (17), a seat (18), a seat belt running mechanism and a circuit control element; the seat belt guide arm (17) is provided with a left seat belt guide arm (17a) and a right seat belt guide arm (17b) according to the direction of the seat (18); a lock buckle (6), at least three left guide blocks (3) and a hinge (7) are arranged inside the left seat belt guide arm (17a); a lock tongue (5), at least three right guide blocks (4) and a hinge (7) are arranged inside the right seat belt guide arm (17b); and rubber pads are arranged on the sides of the left guide block (3) and the right guide block (4) that are close to each other; The safety belt running mechanism is respectively composed of a driving motor (11), a first gear (9), a second gear (10), a double-groove pulley (8), a guide wheel (12), a traction steel rope (13), a safety belt webbing (2) and a safety belt retractor (1), and the safety belt running mechanism is placed inside the backrest of the seat (18); The circuit control elements are respectively composed of a self-resetting normally open button SB1, a self-resetting normally closed switch SB2, a contactor KM, an overload relay FR, and a fuse FU. The self-resetting normally closed switch SB2 is placed inside the lock (6), and the self-resetting normally open button SB1 is arranged on the armrest of the seat (18).

2. The seat belt automatic device according to claim 1, characterized in that: The inner sides of both ends of the left guide block (3) and the right guide block (4) are provided with inclined surfaces with a certain angle, and the angle of the inclined surfaces is 90 / (n-1), wherein n is the number of guide blocks. After the adjacent inclined edges of the left guide block (3) and the right guide block (4) are completely fitted together, the left guide block (3) and the right guide block (4) are each bent inwards by 90 degrees.

3. The seat belt automatic device according to claim 1, characterized in that: The seat belt retractor (1) is provided with a spring, the left guide block (3) and the right guide block (4) are respectively connected to a traction steel rope (13), and the left guide block (3) and the right guide block (4) are respectively connected to the seat belt retractor (1) by means of a seat belt webbing (2), the seat belt webbing (2) is wound inside the seat belt retractor (1), and the left guide block (3) and the right guide block (4) are respectively connected to a lock buckle (6) and a lock tongue (5) at a position away from a seat (18).

4. The seat belt automatic device according to claim 1, characterized in that: A hinge (7) is arranged on the upper and lower planes of the joints of each adjacent left guide block (3) and right guide block (4) in the safety belt guide arm (17) to connect the adjacent left guide block (3) and right guide block (4).

5. The seat belt automatic device according to claim 1, characterized in that: The outsides of the left guide block (3) and the right guide block (4) are both covered with dust covers made of flexible materials of corresponding sizes.

6. The seat belt automatic device according to claim 1, characterized in that: The outer cylindrical wall of the double-groove pulley (8) is provided with two grooves. The number of the traction steel ropes (13) is two. One end of the two traction steel ropes (13) is fixedly connected to the two grooves of the double-groove pulley (8). The winding direction of the two traction steel ropes (13) on the double-groove pulley (8) is consistent with the driving direction of the double-groove pulley (8). The guide wheel (12) is used to guide the traction steel ropes (13).

7. The seat belt automatic device according to claim 1, characterized in that: A one-way bearing is arranged inside the double-groove pulley (8), and the double-groove pulley (8) is rotatably connected to the backrest of the seat (18). The one-way bearing is locked in the driving direction of the double-groove pulley (8) and rotates freely in the other direction. The inner ring of the one-way bearing is fixed between the transmission shaft of the second gear (10), and the outer ring of the one-way bearing is installed in the double-groove pulley (8) and is concentric with and fixed to the double-groove pulley (8). The drive motor (11) is fixed inside the backrest of the seat (18), and the output shaft of the drive motor (11) is fixedly sleeved with a first gear (9), and the outer teeth of the first gear (9) and the second gear (10) are meshed with each other.

8. The seat belt automatic device according to claim 1, characterized in that: The diameter of the first gear (9) is smaller than the diameter of the second gear (10).

9. The seat belt automatic device according to claim 1, characterized in that: The self-resetting normally closed switch SB2 in the circuit control element is placed inside the lock (6).

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