A kind of automobile buffer bumper

Abstract

The present invention provides an automotive buffer bumper, which relates to the technical field of automobiles and solves the technical problem of the small buffer performance of the hard-contact type bumper in the prior art. The device includes a bumper bracket, a telescopic mechanism connected to the bumper bracket, and a locking mechanism. The locking mechanism is connected to the telescopic mechanism. The automotive buffer bumper includes a locked state and a movable state. When the automotive buffer bumper is in the locked state, the telescopic mechanism is in a compressed state, and the locking mechanism is closed and acts on the telescopic mechanism. When the automotive buffer bumper is in the movable state, the locking mechanism is opened, and the telescopic mechanism is in a movable state. The present invention is used for vehicles. The use of the telescopic mechanism causes the bumper bracket to pop out a certain distance before the vehicle makes hard contact with an object, so as to cope with the impact force of the bumper bracket contacting an external object through the telescopic mechanism, achieving the effect of absorbing the impact force, greatly reducing the losses caused by collisions, and ensuring the safety of personnel and automobiles.

Description

Technical Field

[0001] The present invention relates to the technical field of automobiles, and more particularly to an automotive buffer bumper. Background Art

[0002] With the development of society and the needs of daily life, automobiles have become increasingly important means of transportation. At the same time, people attach great importance to the safety performance of automobiles, and the role of bumpers on automobiles is particularly important. Currently, most of the bumpers used on the market are hard-contact bumpers. To avoid absorbing and mitigating external impact forces, energy-absorbing buffer materials are often provided behind the bumper and collapsible longitudinal beams are used to achieve the purpose of buffering. However, such structures have little effect on eliminating hard contact. Therefore, it is necessary to design a buffer bumper to achieve the function of buffer insurance by adding or replacing the original bumper. Summary of the Invention

[0003] The purpose of the present invention is to provide an automotive buffer bumper, which solves the technical problem of the small buffering performance of the hard-contact bumper in the prior art. The many technical effects that can be produced by the preferred technical solutions provided by the present invention are described in detail below.

[0004] To achieve the above object, the present invention provides the following technical solutions:

[0005] An automotive buffer bumper provided by the present invention includes a bumper frame, a telescopic mechanism connected to the bumper frame, and a locking mechanism. The locking mechanism is connected to the telescopic mechanism. The automotive buffer bumper includes a locked state and an active state. When the automotive buffer bumper is in the locked state, the telescopic mechanism is in a compressed state, and the locking mechanism is closed and acts on the telescopic mechanism; when the automotive buffer bumper is in the active state, the locking mechanism is opened, and the telescopic mechanism is in an active state;

[0006] The telescopic mechanism includes an outer cylinder, a spring, a connecting rod, a fixing plate, and a fixing post. One end of the spring is disposed at the bottom of the outer cylinder, and the other end is disposed on the fixing plate. The connecting rod is disposed on the side of the fixing plate away from the spring. The connecting rod is disposed along the length direction of the outer cylinder and passes through the outer cylinder. The connecting rod is hinged to the bumper frame. A notch is provided on the side wall of the outer cylinder. The fixing post is disposed on the fixing plate or the connecting rod and passes through the notch;

[0007] The locking mechanism includes a mounting base, a driving part, a transmission part, a locking part and a reset device. The mounting base is arranged on the outer cylinder. The upper end surface of the mounting base is parallel to the horizontal plane of the notch, and the side edge of the notch coincides with the side edge of the mounting base. The driving part is arranged at one end of the mounting base. The driving part can drive the transmission part to move. The locking part is hinged to one side of the mounting base close to the notch. The transmission part is connected to the locking part. One end of the reset device is connected to the mounting base and the other end is connected to the transmission part.

[0008] Preferably, the driving part is an electromagnet, and the armature is arranged on the transmission part.

[0009] Preferably, the driving part is a motor.

[0010] Preferably, the transmission part is a transmission rod. The transmission rod is hinged to the locking part, and a limiting block is arranged at one end of the transmission rod.

[0011] Preferably, the axis of the motor is perpendicular to the transmission rod. A gear is arranged on the output shaft of the motor, and a rack is arranged on the corresponding transmission rod.

[0012] Preferably, the locking part is a locking block with a parallelogram structure. The two ends of the same side of the locking block are respectively hinged to the mounting base and the transmission rod. A plurality of locking blocks are arranged and evenly arranged along the length direction of the transmission rod.

[0013] Preferably, the reset device is a spring, and the reset device is in a stretched state.

[0014] Preferably, an automatic control module is further included. The automatic control module includes a speed sensor, a displacement sensor and a controller. The speed sensor and the displacement sensor are both connected to the controller, and the controller is connected to the driving part.

[0015] Preferably, a sleeve is arranged on the outer wall of the top of the outer cylinder. The sleeve is communicated with the inside of the outer cylinder, and the connecting rod passes through the sleeve.

[0016] Preferably, the mounting base is an angle iron. One side surface of the angle iron is parallel to the notch and is connected to the outer cylinder, and the other side surface is connected to the side wall of the outer cylinder.

[0017] In the technical solution provided by the present invention, it includes a bumper support, a telescopic mechanism connected to the bumper support, and a locking mechanism. The telescopic mechanism is connected to the bumper support, and the telescopic mechanism can be used to achieve the buffer contact of the vehicle during impact. A locking mechanism is also provided. The locking mechanism is connected to the telescopic mechanism and controls the telescopic mechanism to prevent rebound after the vehicle is impacted. Specifically, the automotive buffer bumper includes a locked state and an active state. When the automotive buffer bumper is in the locked state, the telescopic mechanism is in a compressed state, the locking mechanism is closed and acts on the telescopic mechanism. This state includes the initial state of the automotive buffer bumper and the locked state after the impact is completed. When the automotive buffer bumper is in the active state, the locking mechanism is opened, and the telescopic mechanism is in an active state. In the initial state, the telescopic mechanism is in a fully compressed state, and at this time the locking mechanism locks the compression mechanism. Before the impact occurs, the locking mechanism is opened to make the telescopic mechanism in an active state and pop out the bumper support by a certain distance to cope with the impact. After the impact is completed, the locking mechanism is closed to lock the telescopic mechanism again;

[0018] The telescopic mechanism includes an outer cylinder, a spring, a connecting rod, a fixing plate, and a fixing pile. One end of the spring is arranged at the bottom of the outer cylinder, and the other end is provided with a fixing plate. The other side of the fixing plate is connected to the connecting rod, and the other end of the connecting rod is connected to the bumper support. When the bumper support receives an impact, the connecting rod pushes the fixing plate towards the bottom of the outer cylinder. The fixing pile is arranged on the fixing plate and the connecting rod, and the fixing pile extends to the outside of the outer cylinder for cooperating with the locking mechanism to lock the telescopic mechanism;

[0019] The locking mechanism includes a mounting seat, a driving part, a transmission part, a locking part, and a reset device. The mounting seat is arranged on the outer cylinder, and the upper end surface of the mounting seat is parallel to the horizontal plane of the notch, which is convenient for the locking part to contact the fixing pile to complete the locking of the telescopic mechanism. The driving part is arranged at one end of the mounting seat, and the driving part can drive the transmission part to move. The locking part is hinged on the side of the mounting seat close to the notch, the transmission part is connected to the locking part, and one end of the reset device is connected to the mounting seat and the other end is connected to the transmission part. When the locking mechanism is in the locked state, the locking part is located on the notch. When the locking mechanism is in the unlocked state, the locking part moves away from above the notch.

[0020] The preferred technical solution of the present invention can at least further produce the following technical effects: The driving part is an electromagnet, and the armature is arranged on the transmission part. The form of the driving part using an electromagnet can achieve the rapid action of the locking mechanism;

[0021] The transmission part adopts the form of a transmission rod. The transmission rod is hinged to the locking part, and the locking part is hinged to the mounting seat, so as to realize the movement of the transmission rod driving the locking part to rotate;

[0022] The driving mode between the motor and the transmission rod adopts the mode of gear and rack, and the fault tolerance rate of the device can be improved and the offset of the movement of the transmission rod can be offset by increasing the length of the teeth;

[0023] The locking part is a locking block with a parallelogram structure. The two ends of the same side of the locking block are respectively hinged to the mounting seat and the transmission rod. A plurality of locking blocks are provided and evenly arranged along the length direction of the transmission rod. This structure of the locking block can make the locking block swing in an arc when the transmission rod moves, so as to move above the notch to lock the fixed pile. The stop angle of the locking block is set to be arc-shaped, and the center of the arc is the center of the hinge point between the locking block and the mounting seat. A rolling mechanism such as a bearing can also be provided at the stop angle of each locking block to reduce the friction at startup;

[0024] The reset device is a spring, and the reset device is in a stretched state. The setting of the reset device can make the locking mechanism always in the locked state in the initial state, and can also drive the transmission part to return after the driving part stops working;

[0025] It also includes an automatic control module. The automatic control module includes a speed sensor, a displacement sensor and a controller. The speed sensor and the displacement sensor are both connected to the controller, and the controller is connected to the driving part. The driving part is controlled through the automatic control module to control the telescopic mechanism to complete the work. By entering the preset values of the speed sensor and the displacement sensor into the controller, and then the speed sensor and the displacement sensor collect data and feedback it to the controller. When the values collected by the speed sensor and the displacement sensor exceed the preset values, the driving part is started to act.

[0026] The telescopic mechanism and the locking mechanism are symmetrically arranged in two groups. The connecting rod is hinged to the insurance frame. The symmetrical arrangement makes the force more balanced, and at the same time increases the buffering force. The hinged setting method can achieve a buffering effect when the insurance frame is tilted under impact within a certain angle range;

[0027] The mounting seat is an angle iron. One side of the angle iron is parallel to the notch and connected to the outer cylinder, and the other side is connected to the side wall of the outer cylinder. The use of the angle iron can play a good role in fixing the locking part and the transmission rod. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic diagram of the line structure of the automotive buffer bumper provided by the embodiment of the present invention;

[0030] Figure 2It is a schematic diagram of the overall installation structure of the automotive buffer bumper provided by an embodiment of the present invention;

[0031] Figure 3 It is a schematic diagram of the partial structure of the automotive buffer bumper provided by an embodiment of the present invention;

[0032] Figure 4 It is a schematic cross-sectional structure diagram of the telescopic mechanism provided by an embodiment of the present invention;

[0033] Figure 5 It is a schematic front view structure diagram of the position of the fixed pile provided by an embodiment of the present invention;

[0034] Figure 6 It is a schematic structure diagram of the locking block provided by an embodiment of the present invention.

[0035] In the figure: 1 - insurance frame; 2 - telescopic mechanism; 3 - locking mechanism; 4 - outer cylinder; 5 - first spring; 6 - connecting rod; 7 - fixing plate; 8 - fixed pile; 9 - notch; 10 - mounting seat; 11 - driving part; 12 - transmission part; 13 - locking part; 14 - reset device; 15 - return mechanism; 16 - recoil spring; 17 - limiting block; 18 - sleeve. Specific embodiments

[0036] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts fall within the scope protected by the present invention.

[0037] Specific embodiments of the present invention provide an automotive buffer bumper, which includes a bumper bracket 1, a telescopic mechanism 2, and a locking mechanism 3. The telescopic mechanism 2 is connected to the bumper bracket 1 to relieve the impact on the bumper bracket 1. To enable the telescopic mechanism 2 to contract when not in use and pop out when in use, a locking mechanism needs to be set up. The locking mechanism 3 is connected to the telescopic mechanism 2 to achieve the purpose of locking and unlocking the telescopic mechanism 2. The automotive buffer bumper provided by the present invention has a locked state and an active state. When the automotive buffer bumper is in the locked state, the telescopic mechanism 2 is in a compressed state, and the locking mechanism 3 is opened and acts on the telescopic mechanism 2; when the automotive buffer bumper is in the active state, the locking mechanism 3 is closed, and the telescopic mechanism 2 is in the active state. The specific locked state also includes an initial locked state and a locked state after collision. In the initial state, the telescopic mechanism 2 is in a fully compressed state, and the locking mechanism 3 locks the telescopic mechanism 2. When it is necessary to cope with an impact, the locking mechanism 3 is activated so that the locking mechanism no longer locks the telescopic mechanism 2. At this time, the telescopic mechanism 2 is in the active state, and the bumper bracket 1 is popped out a certain distance to cope with the impact. After the impact is completed, the locking mechanism 3 stops working so that the locking mechanism 3 locks the telescopic mechanism 2 again to prevent the telescopic mechanism 2 from rebounding the bumper bracket 1.

[0038] It should be noted that the shape and structure of the bumper bracket 1 can be designed into different shapes and structures according to different vehicles.

[0039] As an optional implementation manner of the present invention to achieve the functions of the above-mentioned telescopic mechanism 2, the telescopic mechanism 2 includes an outer cylinder 4, a first spring 5, a connecting rod 6, a fixing plate 7, and a fixing pile 8, as shown in the attached Figure 2 and the attached Figure 3 figure. One end of the first spring 5 is arranged at the bottom of the outer cylinder 4, and the other end is arranged on the fixing plate 7. The fixing plate 7 can move up and down inside the outer cylinder 4. The connecting rod 6 is arranged on the side of the fixing plate 7 away from the first spring 5. The connecting rod 6 is arranged along the length direction of the outer cylinder 4 and passes through the outer cylinder 4. Therefore, a through hole for the connecting rod 6 to pass through is arranged at the upper end of the outer cylinder 4. The connecting rod 6 is hinged to the bumper bracket 1. A notch 9 is arranged on the side wall of the outer cylinder 4. The fixing pile 8 is arranged on the fixing plate 7 or the connecting rod 6 and passes through the notch 9. The fixing pile 8 and the fixing plate 7 are arranged on the side edge of the fixing plate 7, as shown in the attached Figure 4 figure. The fixing pile 8 and the connecting rod 6 are perpendicular to each other.

[0040] It should be noted that the size, length, or shape of the first spring 5 can be designed according to the size and weight of the vehicle.

[0041] In a preferred solution, a recoil spring 16 can also be arranged inside the outer cylinder 4. The recoil spring 16 is arranged at the top inside the outer cylinder 4 (as shown in the attached Figure 3In the direction), after the locking mechanism 3 releases the telescopic mechanism 2, the fixing plate 7 and the connecting rod 6 move upward simultaneously under the action of the first spring 5, and the recoil spring 16 can buffer the excessive impact force between the fixing plate 7 and the connecting rod 6.

[0042] To lock the telescopic mechanism 2, specifically as an optional implementation manner of the embodiment of the present invention, the locking mechanism 3 includes a mounting seat 10, a driving part 11, a transmission part 12, a locking part 13 and a reset device 14. The driving part 11 provides power. The mounting seat 10 is arranged on the outer cylinder 4 and is fixedly connected between the mounting seat 10 and the outer cylinder 4. Specifically, when the outer cylinder 4 adopts a cylindrical structure, the mounting seat 10 adopts an angle iron to buckle on the outside of the cylinder so that the upper end surface of the mounting seat 10 is flush with the notch 9. One straight surface of the angle iron is parallel to the horizontal plane of the notch 9, and the side of the notch 9 coincides with the side of the mounting seat 10. Correspondingly, the angle iron is arranged on the outer cylinder 4 in a form with one side horizontal and the other side vertical, and the horizontal side coincides with the edge of the notch 9. The driving part 11 is arranged at one end of the mounting seat 10. The driving part 11 can drive the transmission part 12 to move. The locking part 13 is hinged on the side of the mounting seat 10 close to the notch 9. The transmission part 12 is connected to the locking part 13. The transmission part 12 can adopt a transmission rod structure. The transmission rod is a straight strip-shaped structure. At the same time, a limit block 17 is arranged at one end of the transmission rod (the end far from the electromagnet) to limit its movement and prevent the locking block from continuing to move after moving to the notch 9. The transmission rod is arranged along the length direction of the outer cylinder 4. The transmission rod is hinged to the side of the locking part 13 far from the notch 9. One end of the reset device 14 is connected to the mounting seat 10 and the other end is connected to the transmission part 12 to ensure that the locking mechanism 3 can always be in a locked state when the driving part 11 does not work. The reset device 14 can be a second spring, and the second spring is in a stretched state and the locking part 13 covers the notch 9.

[0043] To more clearly show the state of the locking mechanism 3, combined with the Figure 1 locking structure forms on both sides in the attached figure, where the left side shows the locking mechanism 3 in a locked state and the right side shows the locking mechanism 3 in an unlocked state.

[0044] The driving part 11 can specifically adopt an electromagnet form or a motor form. In this way, the driver can control it inside the cab by setting a control switch. When the driving part 11 is in the form of a motor, a screw stepper motor can be used, and the screw nut is connected to the transmission part 12. Or a common motor can be used and a gear is arranged on the motor shaft, and a rack is arranged on the transmission part 12 correspondingly to complete its linear motion. At the same time, the fault tolerance rate of the device can be improved and the offset of the transmission rod movement can be offset by increasing the length of the teeth.

[0045] To achieve the automatic trigger control of the automotive buffer bumper provided by the present invention, a detection controller can be connected to an electromagnet or a motor. This detection controller, as an existing technical means, consists of a speed meter (or speed sensor), a camera for detecting objects (or displacement sensor), and a controller. The camera for detecting objects (or displacement sensor) and the speed sensor are arranged at the front of the vehicle, which can not only measure the speed of the vehicle but also detect the distance of obstacles existing in front of the vehicle. When the vehicle is traveling at a certain speed (such as 60 kilometers per hour) or above, when the distance between the obstacle and the vehicle is within a certain distance (for example, 5 meters) and the relative speed between the vehicle and the obstacle reaches a certain preset value at this time, the controller controls the electromagnet or the motor to start; the preset values of the distance between the obstacle and the vehicle and the preset value of the vehicle speed can both be set according to subsequent tests, so that it can be automatically triggered to cope with dangers when the driver's reaction is not timely enough.

[0046] As an optional implementation manner of the embodiment of the present invention, the locking portion 13 can be designed as a locking block with a parallelogram structure. The two ends of the same side of the locking block are respectively hinged to the mounting seat 10 and the transmission rod, as shown in the attached Figure 2 and the attached Figure 6As shown, the stop angle of the locking block (a corner covering the notch 9) is set to an arc shape, and the center of the arc is the center of the hinge point of the locking block and the mounting seat, so that the locking block can be swung without moving the fixed pile 8 during initial startup. A rolling mechanism such as a ball or a bearing can also be set on the stop angle of each locking block to reduce the friction during startup, wherein the ball can be embedded in the arc stop angle of the locking block, and the bearing can be directly hinged at the arc stop angle, so that the outer cylindrical surface of the bearing slightly protrudes from the arc stop angle surface of the locking block; the locking block is set on the same side near the two corners so that when the transmission rod moves linearly, the parallelogram-shaped locking block can rotate around the hinge point between the locking block and the mounting seat 10, and the corresponding transmission rod will have a position in the direction of the notch, and the corresponding drive part 11 can use an electromagnet. When the armature width can be increased to adapt to the lateral displacement of the transmission rod, when a screw stepper motor is used, the motor can be set on a lateral track so that the screw stepper motor moves with the lateral movement of the mobile transmission part 12 ( The locking blocks are arranged in a plurality and are evenly arranged along the length direction of the transmission rod. The arrangement of the plurality of locking blocks enables the locking portion 13 to complete the locking of the telescopic mechanism 2 when the connecting rod 6 is in any position after the automobile buffer-type bumper responds to the collision. Because the driving portion 11 is not working and does not provide power at this time, the locking portion 13 is always in the initial position under the action of the reset device 14 and the transmission portion 2. When the insurance frame 1 responds to the collision, the connecting rod 6 compresses the fixing plate 7 while the fixing pile 8 moves toward the bottom of the outer tube 4 at the notch. In this process, the fixing pile 8 pushes the limit block to move. When the collision stops, the fixing pile 8 is on one side of one of the locking blocks close to the bottom of the outer tube 4. At this time, the force received by the first spring 5 on the fixing pile 8 is greater than the impact force, but the limit block 17 arranged at one end of the transmission rod limits its reverse movement, so that the locking block limits the movement of the fixing pile 8, further realizing the locking of the insurance frame 1 at any position to avoid the rebound of the insurance frame 1.

[0047] The telescopic mechanism 2 and the locking mechanism 3 are two sets of symmetrical arrangements as shown in the attached Figure 1As shown in the figure, the telescopic mechanism 2 is symmetrically arranged inside the side beams at the bottom of the vehicle. Then, the connecting rod 6 passes through the front beam of the vehicle and is hinged to the bumper support 1. The hinged manner enables the bumper support 1 to deflect a certain angle when coping with the impact force within a certain angle on both sides directly in front, so as to cope with the impact. A return mechanism 15 can also be provided to push the fixed pile 8 to return. The return mechanism 15 can be a hydraulic mechanism respectively arranged on the front beam of the vehicle and facing the direction of the fixed pile 8. The return mechanism 15 includes a hydraulic pump, a solenoid valve, and a hydraulic strut. The solenoid valve is controlled by a switch, and the switch is arranged inside the vehicle. The switch includes two buttons for forward and backward to achieve the control of the forward and backward movement of the hydraulic strut. At the same time, a sleeve 18 is arranged between the outer cylinder 4 and the front beam. The connecting rod 6 extends out of the front beam of the vehicle through the sleeve 18 and is connected to the bumper support 1. At the same time, the inner diameter of the sleeve 18 is slightly larger than the diameter of the connecting rod 6, and the sleeve 18 plays a role of guiding and supporting. The connecting rod 6 slides inside the sleeve 18.

[0048] In addition to coping with emergencies, the vehicle buffer bumper provided by the specific embodiment of the present invention can also be used for preventing collisions. Before the vehicle travels at a high speed (after the vehicle gets on the highway), the vehicle buffer bumper can be extended a certain distance in advance, and the return structure 15 is used to provide power, specifically the hydraulic oil pump provides power. The solenoid valve is used to control the forward and backward movement of the hydraulic strut. The control buttons for the forward and backward movement of the hydraulic solenoid valve are arranged in the cab. First, press the forward button to make the hydraulic strut press against the fixed pile 8, then press the start button to open the locking part 13, and finally press the backward button of the return mechanism 15. At this time, the bumper support 1 moves forward together with the hydraulic strut under the action of the first spring 5, and it can be stopped at any position and then the start button is stopped. The locking part 13 will lock the fixed pile 8 at this position, and the hydraulic strut continues to retract to the front end of the notch 9 and stops. In this way, presetting the position of the bumper support 1 can play an active protection role. The brief method is to use the return mechanism 15 to press against the fixed pile 8, then open the locking mechanism 3 and slowly control the hydraulic strut of the return structure to contract. The fixed pile 8 moves a certain distance in the direction of the front of the vehicle under the action of the first spring 5 and the hydraulic structure, and then the locking mechanism 3 is closed to lock the fixed pile 8, so as to realize the presetting of the bumper support 1 to play an active protection role.

[0049] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A buffer-type bumper for an automobile, characterized in that, It includes a bumper support (1), a telescopic mechanism (2) connected to the bumper support (1), and a locking mechanism (3). The locking mechanism (3) is connected to the telescopic mechanism (2). The automotive buffer bumper has a locked state and an active state. When the automotive buffer bumper is in the locked state, the telescopic mechanism (2) is in a compressed state, and the locking mechanism (3) is closed and acts on the telescopic mechanism (2). When the automotive buffer bumper is in the active state, the locking mechanism (3) is opened, and the telescopic mechanism (2) is in an active state. The telescopic mechanism (2) includes an outer cylinder (4), a first spring (5), a connecting rod (6), a fixing plate (7), and a fixing post (8). One end of the first spring (5) is arranged at the bottom of the outer cylinder (4), and the other end is arranged on the fixing plate (7). The connecting rod (6) is arranged on the side of the fixing plate (7) away from the first spring (5). The connecting rod (6) is arranged along the length direction of the outer cylinder (4) and passes through the outer cylinder (4). The connecting rod (6) is hinged to the bumper support (1). A notch (9) is arranged on the side wall of the outer cylinder (4). The fixing post (8) is arranged on the fixing plate (7) or the connecting rod (6) and passes through the notch (9). The locking mechanism (3) includes a mounting seat (10), a driving part (11), a transmission part (12), a locking part (13), and a reset device (14). The mounting seat (10) is arranged on the outer cylinder (4). The upper end surface of the mounting seat (10) is parallel to the horizontal plane of the notch (9). The side of the notch (9) coincides with the side of the mounting seat (10). The driving part (11) is arranged at one end of the mounting seat (10). The driving part (11) can drive the transmission part (12) to move. The locking part (13) is hinged to the side of the mounting seat (10) close to the notch (9). The transmission part (12) is connected to the locking part (13). One end of the reset device (14) is connected to the mounting seat (10), and the other end is connected to the transmission part (12). The transmission part (12) is a transmission rod. The transmission rod is hinged to the locking part (13). A limiting block (17) is arranged at one end of the transmission rod. The locking part (13) is a locking block with a parallelogram structure. The two ends of the same side of the locking block are respectively hinged to the mounting seat (10) and the transmission rod. A plurality of locking blocks are arranged and evenly arranged along the length direction of the transmission rod. The reset device (14) is a second spring, and the reset device (14) is in a stretched state.

2. The automotive buffer bumper according to claim 1, characterized in that, The driving part (11) is an electromagnet, and an armature is arranged on the transmission part (12).

3. The automotive buffer bumper according to claim 1, characterized in that, The driving part (11) is a motor.

4. The automotive buffer bumper according to claim 3, characterized in that, The axis of the motor is perpendicular to the transmission rod. A gear is arranged on the output shaft of the motor, and a rack is arranged on the corresponding transmission rod.

5. The automotive buffer bumper according to claim 1, characterized in that, It further includes an automatic control module, and the automatic control module includes a speed sensor, a displacement sensor and a controller. The speed sensor and the displacement sensor are both connected to the controller, and the controller is connected to the driving part (11).

6. The automotive buffer bumper according to claim 1, characterized in that, A sleeve (18) is arranged on the outer wall of the top of the outer cylinder (4). The sleeve (18) is communicated with the inside of the outer cylinder (4), and the connecting rod (6) passes through the sleeve (18).

7. The automotive buffer bumper according to claim 1, characterized in that, The mounting seat (10) is an angle iron. One side of the angle iron is parallel to the notch (9) and is connected to the outer cylinder (4), and the other side is connected to the side wall of the outer cylinder (4).

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