Buckle seat for safety belt, safety belt buckle and method for locking steering wheel of automobile

Abstract

The invention discloses a buckle seat for a safety belt, a safety belt buckle and a steering wheel locking method of an automobile. The buckle seat for the safety belt is provided with a locking mechanism and comprises a shell, a buckling assembly and a locking assembly, the buckling assembly and the locking assembly are arranged on the shell, the buckling assembly is provided with a buckling sliding block, an unbuckling button and a stopping sliding block, and the locking assembly is provided with a clamping plate and a lock. When a buckle piece of a braid connected with an automobile is inserted into a buckle piece hole of the buckle seat, the buckle piece can be mutually buckled with the buckling sliding block, when the lock is switched to the locking state, the lock can drive the clamping plate to clamp the buckle releasing button, and the buckle releasing button is prevented from being pressed to cause relative separation of the buckle piece and the buckling sliding block. A user can insert the buckle piece connected with the braid into the buckle seat after penetrating through a steering wheel of an automobile and switch the lockset to the locked state so as to limit the rotating angle of the steering wheel, so that the automobile is effectively prevented from being stolen by intentional people.

Description

Technical Field

[0001] The present invention relates to a seat belt buckle, and more particularly to a seat belt buckle for a seat belt and a method for locking a steering wheel of an automobile, which can lock a buckle piece in a buckle base. Background Art

[0002] In order to prevent an automobile from being stolen, a common method is to use a steering wheel lock to fix the steering wheel of the automobile so that the steering wheel cannot be rotated, thereby achieving the purpose of preventing a thief from driving away the automobile.

[0003] The main structure of the existing steering wheel lock is a long rod body, and a lock is provided on the rod body. However, in order to prevent the rod body from being directly cut by a thief, the existing steering wheel lock must be made of a strong structure and material. This not only results in a high manufacturing cost, large volume and heavy weight of the steering wheel lock, but also causes problems such as inconvenience in carrying and occupying space, so the existing method for preventing an automobile from being stolen still needs to be further improved. Summary of the Invention

[0004] In view of the problems existing in the foregoing prior art, the purpose of the present invention is to provide a seat belt buckle, the buckle base of which has a locking mechanism, so that after a user winds a webbing around a steering wheel, the buckle piece can be locked in the buckle base, thereby restricting the rotation angle of the steering wheel.

[0005] In order to achieve the above purpose, the technical means adopted by the present invention is to provide a seat belt buckle base with a locking mechanism, which includes:

[0006] A housing, which is hollow, and a push button hole and a buckle piece hole are formed on the housing;

[0007] A buckling assembly, which is installed on the housing, and the buckling assembly has a buckling slider, a release push button and a stop slider; the buckling slider is arranged in the housing and can move back and forth between a release position and a buckling position; the release push button is arranged in the push button hole of the housing and can move back and forth between an initial position and a pressing position. When the release push button moves towards the pressing position of the release push button, the release push button drives the buckling slider to move towards the release position; the stop slider is arranged in the housing and can move back and forth between an initial position and a pressing position. When the stop slider is located at the initial position, the stop slider stops the buckling slider between the release position and the buckling position. When the stop slider moves towards the pressing position of the stop slider, the stop slider is separated from the buckling slider, so that the buckling slider can move to the buckling position;

[0008] A locking assembly is installed on the housing. The locking assembly has a latching plate and a lock. The latching plate is disposed in the housing and can move back and forth between an unlocking position and a locking position. The latching plate has at least one limiting leg that extends toward the release button. When the latching plate is in the locking position, the at least one limiting leg locks the release button in the starting position of the release button. The lock is installed on the housing and has a lock core shaft. The lock has a locked state and an unlocked state. When the lock is in the locked state, the latching plate is driven by the lock core shaft to be positioned in the locking position.

[0009] In the seat belt buckle with a locking mechanism, the kinetic energy of the buckling slider is driven by at least one first elastic member to move toward the buckling position; the release button can be driven by at least one second elastic member to move toward the starting position of the release button and can be pressed to move toward the pressing position of the release button; the stop slider can be driven by at least one third elastic member to move toward the starting position of the stop slider and can be pressed to move toward the pressing position of the stop slider.

[0010] In the seat belt buckle with a locking mechanism, the latching plate can be driven by at least one fourth elastic member to move toward the unlocking position. When the lock is in the locked state, the latching plate is pushed by the lock core shaft to be positioned in the locking position.

[0011] In the seat belt buckle with a locking mechanism, the lock can be a push-button lock. When switching between the locked state and the unlocked state, the lock core shaft axially expands and contracts to drive the latching plate. In addition, the lock can also be a rotary lock.

[0012] In the seat belt buckle with a locking mechanism:

[0013] The release button is movably installed up and down in the button hole of the housing. The release button has a driving portion. The driving portion has at least one driving plate. Each of the at least one driving plates is formed with a guiding bevel edge that extends obliquely downward and backward toward a rear side wall of the housing.

[0014] The buckling slider is movably installed back and forth in the housing. The buckling slider has at least one extension rod. The position of the at least one extension rod corresponds to the driving portion of the release button and abuts against the guiding bevel edge of the at least one driving plate of the release button.

[0015] In the buckle for seat belt with a locking mechanism as described above, the at least one driving plate can include two driving plates arranged at intervals, the at least one extending rod can include two extending rods, the two extending rods respectively protrude laterally on opposite sides of the buckling slider, the buckling slider is arranged between the two driving plates, and the two extending rods respectively abut against the inclined guide edges of the two driving plates of the unlocking button.

[0016] In the buckle for seat belt with a locking mechanism as described above:

[0017] The stop slider is movably arranged up and down in the housing, a pushing inclined surface is formed on the stop slider, and the pushing inclined surface extends downward and forward towards a front side wall of the housing;

[0018] The buckling slider has a buckling convex portion protruding towards a rear side wall of the housing, a guide inclined surface and a distal edge are formed on the buckling convex portion, the guide inclined surface extends obliquely downward and backward towards the rear side wall of the housing, and the distal edge is one end of the buckling convex portion facing the rear side wall of the housing.

[0019] In order to achieve the above object, another technical means adopted by the present invention is to provide a seat belt buckle, which includes:

[0020] A buckle for seat belt with a locking mechanism as described above; and

[0021] A buckle piece, a buckle hole is formed at one end of the buckle piece, and the end of the buckle piece where the buckle hole is formed is detachably inserted into the buckle piece hole of the housing of the buckle. When the buckle piece is inserted into the buckle piece hole, the buckling slider is pushed to move to the buckling position and is correspondingly buckled in the buckle hole of the buckle piece.

[0022] In the seat belt buckle as described above, the other end of the buckle piece can be connected to a webbing.

[0023] In order to achieve the above object, another technical means adopted by the present invention is to provide a method for locking a steering wheel of an automobile, which includes:

[0024] Provide a buckle for seat belt with a locking mechanism as described above, and the buckle is installed on one side of a seat of the automobile;

[0025] Provide a webbing, the webbing is installed on a car body shell and is located on the other side of the seat, and the length of the webbing is adjustable;

[0026] Provide a buckle piece, a buckle hole is formed at one end of the buckle piece and the other end is connected to the webbing;

[0027] Drive the buckle piece and the webbing through a steering wheel of the automobile, and then insert the buckle piece into the buckle.

[0028] In the described method for locking the steering wheel of an automobile, a microswitch is installed inside the buckle seat, and the microswitch is electrically connected to a control unit of the automobile; when the lock is in the locked state, the microswitch is triggered to send a signal to the control unit, switching the automobile to a power-off state and preventing it from being started; when the lock is in the unlocked state, the microswitch stops sending the said signal to the control unit, and the automobile returns to a state ready to be started and can be started.

[0029] With the design described above, when the user gets out of the car, they can first pass the buckle piece connected to the webbing through the steering wheel of the car, wind the webbing around the steering wheel, then insert the buckle piece into the buckle seat, and switch the lock to the said locked state, thus restricting the rotation angle of the steering wheel and achieving the purpose of preventing the car from being stolen by malicious people. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front perspective external view of the buckle seat of the present invention.

[0031] Figure 2 It is a rear perspective external view of the buckle seat of the present invention.

[0032] Figure 3 It is an exploded perspective view of the buckle seat of the present invention.

[0033] Figure 4 It is a side sectional view of the buckle seat of the present invention in the unlocked state.

[0034] Figure 5 It is a top sectional view of the buckle seat of the present invention in the unlocked state.

[0035] Figure 6 and Figure 7 It is a side sectional view showing the action of the buckle seat and the buckle piece of the present invention when the buckling connection is released.

[0036] Figure 8 It is a side sectional view of the seat belt buckle of the present invention during the locking process.

[0037] Figure 9 It is a top sectional view of the seat belt buckle of the present invention during the locking process.

[0038] Figure 10 For the buckle seat of the present invention along Figure 5 the side sectional view of the A-A section line, where the buckle seat is in the locked state.

[0039] Figure 11 It is an exploded perspective view of the lock of the buckle seat of the present invention.

[0040] Figure 12 It is an end sectional view of the buckle seat of the present invention, where the lock of the buckle seat is in the locked state.

[0041] Figure 13 This is a top - down sectional view of the seat belt buckle of the present invention, wherein the lock of the buckle base is in an unlocked state.

[0042] Figure 14 This is a side - view schematic diagram of the seat belt buckle of the present invention applied to lock the steering wheel of an automobile.

[0043] Figure 15 This is a block diagram showing the electrical connection of the lock of the buckle base of the present invention to the control unit of an automobile. Detailed implementation manners

[0044] The following, in conjunction with the drawings and the preferred embodiments of the present invention, further elaborates on the technical means adopted by the present invention to achieve the intended creative purpose.

[0045] Refer to Figure 1 、 Figure 2 and Figure 14 As shown, the seat belt buckle of the present invention includes a buckle piece 1 and a buckle base 2. Further refer to Figure 7 、 Figure 8 and Figure 14 As shown, one end of the buckle piece 1 is connected to a webbing 3, and the other end forms a buckle hole 10. And the end of the buckle piece 1 where the buckle hole 10 is formed is detachably inserted into the buckle base 2.

[0046] Refer to in conjunction with Figures 3 to 5 As shown, the buckle base 2 is installed on one side of an automobile seat 4. The buckle base 2 has a locking mechanism and includes a housing 20, a buckling component 30 and a locking component 40.

[0047] The housing 20 is hollow, with opposite sides of the housing 20 being a front side wall and a rear side wall respectively. The top of the housing 20 is formed with an adjacent push - button hole 21 and a buckle - piece hole 22. The push - button hole 21 is located on the side close to the front side wall, and the buckle - piece hole 22 is located on the side close to the rear side wall.

[0048] The buckling component 30 is installed on the housing 20. The buckling component 30 has a buckling slider 31, a release push - button 32 and a stop slider 33.

[0049] The buckling slider 31 is arranged in the housing 20 and can move back and forth between a release position and a buckling position. The release position corresponds to being below the push - button hole 21, and the buckling position corresponds to being below the buckle - piece hole 22. The buckling slider 31 is driven by at least one first elastic member 34 to move towards the buckling position.

[0050] The unlocking push button 32 is disposed in the push button hole 21 of the housing 20 and can move back and forth between an initial position and a pressed position. The unlocking push button 32 is driven by at least one second elastic member 35 to move towards the initial position of the unlocking push button 32. The unlocking push button 32 can be pressed to move towards the pressed position of the unlocking push button 32 and drive the fastening slider 31 to move towards the unlocking position.

[0051] Refer to Figure 3 , Figure 6 and Figure 7 As shown in the figures, specifically, the unlocking push button 32 is disposed in the push button hole 21 of the housing 20 so as to be movable up and down. The unlocking push button 32 has a driving portion 321 which has at least one driving plate 322. Each of the at least one driving plate 322 is formed with a guiding inclined edge 323 which extends obliquely downward and backward towards the rear side wall of the housing 20. The fastening slider 31 can move back and forth between the front side wall and the rear side wall of the housing 20. The fastening slider 31 has at least one extending rod 311. The position of the at least one extending rod 311 corresponds to the driving portion 321 of the unlocking push button 32 and can abut against the guiding inclined edge 323 of the at least one driving plate 322 of the unlocking push button 32. Thus, when the unlocking push button 32 is pressed and moves downward towards the pressed position of the unlocking push button 32, it will drive the fastening slider 31 to move towards the front side wall of the housing 20 towards the unlocking position via the guiding inclined edges 323 of the two driving plates 322. After the force pressing the unlocking push button 32 is released, the elastic restoring force of the second elastic member 35 pushes the unlocking push button 32 towards the initial position of the unlocking push button 32, and the elastic restoring force of the first elastic member 34 pushes the fastening slider 31 towards the fastening position.

[0052] As Figure 3 shown, in a specific embodiment of the present invention, the at least one driving plate 322 includes two spaced-apart driving plates 322, the at least one extending rod 311 includes two extending rods 311, the two extending rods 311 respectively protrude laterally from opposite sides of the fastening slider 31, and the fastening slider 31 is disposed between the two driving plates 322 such that the two extending rods 311 respectively abut against the guiding inclined edges 323 of the two driving plates 322 of the unlocking push button 32 so as to drive the fastening slider 31 when the unlocking push button 32 is pressed and the two driving plates 322 abut against the two extending rods 311.

[0053] Refer to Figure 3 , Figure 4 and Figure 6As shown, the stop slider 33 is disposed in the housing 20 and is capable of reciprocating between an initial position and a pressed position. The stop slider 33 is driven by at least one third elastic member 36 to move towards the initial position of the stop slider 33, thereby stopping the fastening slider 31 between the unlocking position and the fastening position. When the stop slider 33 is pressed and moves to the pressed position of the stop slider 33, the stop slider 33 disengages from the fastening slider 31, causing the fastening slider 31 to be pushed by the first elastic member 34 and move to the fastening position.

[0054] Specifically, the stop slider 33 is disposed in the housing 20 so as to be movable up and down. A pushing inclined surface 331 is formed on the stop slider 33, and the pushing inclined surface 331 extends downward and forward towards the front side wall of the housing 20. The fastening slider 31 has a fastening protrusion 312 protruding towards the rear side wall of the housing 20. A guiding inclined surface 313 and a distal edge 314 are formed on the fastening protrusion 312. The guiding inclined surface 313 extends obliquely downward and backward towards the rear side wall of the housing 20, and the distal edge 314 is one end of the fastening protrusion 312 facing the rear side wall of the housing 20. As Figure 4 shown, when the stop slider 33 is located at the initial position of the stop slider 33, the distal edge 314 abuts against the pushing inclined surface 331 of the stop slider 33, thereby using the stop slider 33 to stop the fastening slider 31 between the unlocking position and the fastening position; as Figure 6 shown, when the stop slider 33 is pressed and moves towards the pressed position of the stop slider 33, the distal edge 314 of the fastening protrusion 312 of the fastening slider 31 moves along the pushing inclined surface 331 of the stop slider 33 until it disengages from the stop slider 33 and is pushed by the first elastic member 34 to move to the fastening position.

[0055] See Figure 3 、 Figure 5 、 Figure 9 and Figure 10 shown, the locking assembly 40 is installed on the housing 20, and the locking assembly 40 has a locking plate 41 and a lock 43.

[0056] The locking plate 41 is disposed in the housing 20 and is capable of reciprocating between an unlocking position and a locking position. The locking plate 41 has at least one limiting leg 411, and the at least one limiting leg 411 extends towards the unlocking button 32. When the locking plate 41 moves to the locking position, the at least one limiting leg 411 clamps the unlocking button 32 at the initial position of the unlocking button 32.

[0057] The lock 43 is installed on the housing 20 and has a lock core shaft 431. The position of the lock core shaft corresponds to the locking plate 41 and can drive the locking plate 41. The lock 43 has a locked state and an unlocked state. In the locked state, the locking plate 41 is driven by the lock core shaft 431 to be positioned at the locking position; in the unlocked state, the locking plate 41 can be driven to move to the unlocking position.

[0058] By positioning the locking plate 41 at the locking position, the at least one limiting leg 411 clamps the unlocking button 32 at the starting position of the unlocking button 32, so that the unlocking button 32 cannot be pressed to the pressing position of the unlocking button 32, thereby preventing the buckling slider 31 from moving to the unlocking position. When the locking plate 41 moves back to the unlocking position, the unlocking button 32 can be pressed to the pressing position of the unlocking button 32 so as to move the buckling slider 31 to the unlocking position.

[0059] Specifically, the locking plate 41 can be driven by at least one fourth elastic member 42 to move toward the unlocking position. The lock core shaft 431 of the lock 43 can push against the locking plate 41 to move to the locking position during the locking process so that the unlocking button 32 cannot be pressed. When the lock 43 is switched to the unlocked state, the locking plate 41 is pushed by the fourth elastic member 42 to move in the reverse direction to the unlocking position, enabling the unlocking button 32 to be pressed to the pressing position of the unlocking button 32. However, the way of driving the locking plate 41 is not limited to the above. The locking plate 41 can also be directly driven by the lock core shaft 431 of the lock 43 to move back and forth between the unlocking position and the locking position.

[0060] In a specific embodiment of the present invention, the lock 43 is a push-type lock. The lock core shaft 431 can axially expand and contract when switching to the locked state or the unlocked state to drive the locking plate 41. However, this is not the only limit. The lock 43 can also be a rotary lock or other types of locks, as long as it can drive the locking plate 41 to move back and forth between the unlocking position and the locking position.

[0061] See Figures 11 to 13As shown, more specifically, the lock 43 can include a lock housing 433, an upper bead seat 434 and a lower bead seat 435 disposed within the lock housing 433, a plurality of lock post assemblies 437 and the lock core shaft 431 disposed in the upper bead seat 434 and the lower bead seat 435. A braking groove 436 is concavely formed on an inner wall surface of the lower bead seat 435, and the bottom of the braking groove 436 is in a concave arc shape. The lock core shaft 431 axially penetrates the upper bead seat 434 and the lower bead seat 435. An axial elastic member 440 pushes the lock core shaft 431 to protrude outward from the front end of the upper bead seat 434 in a natural state. A radial groove 432 is concavely formed on an outer wall surface of the lock core shaft 431. A positioning post 438 and a radial elastic member 439 are disposed in the radial groove 432. The radial elastic member 439 is located between the positioning post 438 and the bottom of the radial groove 432. The positioning post 438 can selectively protrude into the braking groove 436 of the lower bead seat 435. The lock core shaft 431 can be pressed to axially protrude from the rear end of the lower bead seat 435 and be fixed in the braking groove 436 of the lower bead seat 435 by the positioning post 438 to maintain the state of protruding from the lower bead seat 435. When the lock core shaft 431 is driven to rotate by a key used in cooperation with the lock 43, the positioning post 438 can be separated from the braking groove 436, and the positioning post 438 can be pressed into the radial groove 432 of the lock core shaft 431 during the movement. The lock core shaft 431 is pushed by the elastic restoring force of the axial elastic member 440 to protrude from the front end of the upper bead seat 434 out of the lock housing 433.

[0062] See Figures 6 to 8 As shown, when the buckle piece 1 of the seat belt buckle is inserted into the buckle hole 22 of the buckle base 2, the buckle piece 1 will first push the stop slider 33 downward, and then touch the buckling convex portion 312 of the buckling slider 31, and squeeze the buckling slider 31 in the direction of the unlocking position along the guiding inclined surface 313 of the buckling convex portion 312 until the position of the buckle hole 10 of the buckle piece 1 corresponds to the buckling slider 31. The buckling slider 31 is then pushed by the first elastic member 34 to move to the buckling position and be correspondingly buckled in the buckle hole 10 of the buckle piece 1.

[0063] Further see Figures 8 to 10 As shown, then as long as the user switches the lock 43 to the locked state, the lock core shaft 431 is pushed to move the locking plate 41 to the locking position, so that at least one limiting leg 411 of the locking plate 41 fixes the unlocking button 32 at the starting position of the unlocking button 32, thereby preventing the unlocking button 32 from being further pressed, and thus locking the buckle piece 1 in the buckle base 2.

[0064] See Figure 14 and Figure 15As shown, the above-mentioned buckle 2 can be further used to lock the steering wheel 5 of the vehicle. Among them, the buckle 2 is installed on one side of the seat 4, and the webbing 3 is installed on a vehicle body 6 on the other side of the seat 4. When getting out of the vehicle, the user passes the buckle 1 connected to the webbing 3 through the steering wheel 5 of the vehicle, makes the webbing 3 wind around the steering wheel 5, then inserts the buckle 1 into the buckle 2, and switches the lock 43 to the locked state, so as to limit the rotation angle of the steering wheel 5, achieving the purpose of preventing malicious people from stealing the vehicle. Further, a microswitch 8 can also be installed in the buckle 2. The microswitch 8 is electrically connected to a control unit 7 of the vehicle. When the lock 43 is in the locked state, the microswitch 8 is triggered to send a signal to the control unit 7, switching the vehicle to a power-off state. At this time, when the user inserts the vehicle key into the keyhole, the vehicle cannot be started; when the lock 43 is switched from the locked state to the unlocked state, the microswitch 8 stops sending the signal to the control unit 7, making the vehicle return to a standby state. At this time, when the user inserts the vehicle key into the keyhole, the vehicle can be started. With this configuration, the vehicle can be further prevented from being stolen.

[0065] The above description is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art, without departing from the scope of the technical solution of the present invention, any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A buckle for a seat belt with a locking mechanism, characterized in that, Comprising a housing, a buckling component and a locking component, wherein: The housing is hollow, and a push button hole and a buckle plate hole are formed on the housing; The buckling component is installed on the housing. The buckling component has a buckling slider, a release push button and a stop slider; the buckling slider is arranged in the housing and can move back and forth between a release position and a buckling position; the release push button is arranged in the push button hole of the housing and can move back and forth between an initial position and a pressing position. When the release push button moves towards the pressing position of the release push button, the release push button drives the buckling slider towards the release position; the stop slider is arranged in the housing and can move back and forth between an initial position and a pressing position. When the stop slider is at the initial position, the stop slider stops the buckling slider between the release position and the buckling position. When the stop slider moves towards the pressing position of the stop slider, the stop slider and the buckling slider are disengaged from each other, so that the buckling slider can move to the buckling position; The locking component is installed on the housing. The locking component has a latching plate and a lock; the latching plate is arranged in the housing and can move back and forth between an unlocking position and a locking position. The latching plate has at least one limiting leg, and the at least one limiting leg extends towards the release push button. When the latching plate is at the locking position, the at least one limiting leg clamps the release push button at the initial position of the release push button; the lock is installed on the housing and has a lock core shaft. The lock has a locked state and an unlocked state. When the lock is in the locked state, the latching plate is driven by the lock core shaft to be positioned at the locking position.

2. The seat belt buckle with a locking mechanism according to claim 1, wherein The buckling slider is driven by at least one first elastic member to move towards the buckling position; The release push button is driven by at least one second elastic member to move towards the initial position of the release push button and can be pressed to move towards the pressing position of the release push button; The stop slider is driven by at least one third elastic member to move towards the initial position of the stop slider and can be pressed to move towards the pressing position of the stop slider.

3. The buckle for a seat belt with a locking mechanism according to claim 1, characterized in that, The latching plate is driven by at least one fourth elastic member to move towards the unlocking position. When the lock is in the locked state, the latching plate is pushed by the lock core shaft to be positioned at the locking position.

4. The buckle for seat belt with a locking mechanism as claimed in claim 2, wherein, The latching plate is driven by at least one fourth elastic member to move towards the unlocking position. When the lock is in the locked state, the latching plate is pushed by the lock core shaft to be positioned at the locking position.

5. The buckle for seat belt with a locking mechanism according to claim 1, characterized in that, The lock is a push-type lock, and the lock core shaft expands and contracts axially to drive the latching plate when the lock is switched to the locked state or the unlocked state.

6. The buckle for seat belt with a locking mechanism as described in claim 1, characterized in that, The lock is a rotary lock.

7. The seat belt buckle with a locking mechanism according to any one of claims 1 to 4, wherein The unlocking button is movably disposed up and down in the button hole of the housing. The unlocking button has a driving portion which has at least one driving plate, and a guiding bevel edge is formed on each of the at least one driving plate, and the guiding bevel edge extends obliquely downward and backward toward a rear side wall of the housing; The buckling slider is movably disposed back and forth in the housing. The buckling slider has at least one extending rod, and the position of the at least one extending rod corresponds to the driving portion of the unlocking button and abuts against the guiding bevel edge of the at least one driving plate of the unlocking button.

8. The buckle for a seat belt with a locking mechanism as claimed in claim 7, wherein, The foregoing at least one driving plate includes two driving plates disposed at intervals. The at least one extending rod includes two extending rods. The two extending rods respectively protrude laterally from opposite sides of the buckling slider. The buckling slider is disposed between the two driving plates, and the two extending rods respectively abut against the guiding bevel edges of the two driving plates of the unlocking button.

9. The buckle for seat belt with a locking mechanism according to any one of claims 1 to 4, characterized in that, The stopping slider is movably disposed up and down in the housing. A pushing bevel surface is formed on the stopping slider, and the pushing bevel surface extends obliquely downward and forward toward a front side wall of the housing; The buckling slider has a buckling convex portion protruding toward a rear side wall of the housing. A guiding bevel surface and a distal edge are formed on the buckling convex portion. The guiding bevel surface extends obliquely downward and backward toward the rear side wall of the housing, and the distal edge is one end of the buckling convex portion facing the rear side wall of the housing.

10. The buckle for seat belt with a locking mechanism as claimed in claim 7, wherein, The stopping slider is movably disposed up and down in the housing. A pushing bevel surface is formed on the stopping slider, and the pushing bevel surface extends obliquely downward and forward toward a front side wall of the housing; The buckling slider has a buckling convex portion protruding toward the rear side wall of the housing. A guiding bevel surface and a distal edge are formed on the buckling convex portion. The guiding bevel surface extends obliquely downward and backward toward the rear side wall of the housing, and the distal edge is one end of the buckling convex portion facing the rear side wall of the housing.

11. A seat belt buckle, characterized in that, Comprising: A seat belt buckle with a locking mechanism as described in any one of claims 1 to 10; And A buckle piece, one end portion of the buckle piece is formed with a buckle hole, and the end portion of the buckle piece formed with the buckle hole is detachably inserted into the buckle hole of the housing of the buckle seat. When the buckle piece is inserted into the buckle hole, the buckling slider is pushed to move to the buckling position and is correspondingly buckled in the buckle hole of the buckle piece.

12. The seat belt buckle according to claim 11, characterized in that, The other end portion of the buckle piece is connected to a webbing.

13. A method for locking a steering wheel of an automobile, characterized in that, Comprising: Providing a seat belt buckle with a locking mechanism as described in any one of claims 1 - 10, and the buckle seat is installed on one side of an automobile seat; Providing a webbing which is installed on a vehicle body shell and is located on the other side of the automobile seat, and the length of the webbing is telescopic; Providing a buckle piece, one end portion of the buckle piece is formed with a buckle hole and the other end portion is connected to the webbing; After driving the buckle piece and the webbing through a steering wheel of the automobile, inserting the buckle piece into the buckle seat.

14. The method for locking the steering wheel of an automobile according to claim 13, wherein, A micro switch is installed in the buckle seat, and the micro switch is electrically connected to a control unit of the automobile; When the lock is in the locked state, the micro switch is triggered to send a signal to the control unit to switch the automobile to a power-off state and cannot be started; When the lock is in the unlocked state, the microswitch stops sending the signal to the control unit, and the vehicle returns to a state ready to be started and can be started.

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