CN211969363U

CN211969363U - Vehicle bumper and vehicle

Info

Publication number: CN211969363U
Application number: CN202020410852.9U
Authority: CN
Inventors: 李佳; 张剑
Original assignee: Beijing Sankuai Online Technology Co Ltd
Current assignee: Beijing Sankuai Online Technology Co Ltd
Priority date: 2020-03-26
Filing date: 2020-03-26
Publication date: 2020-11-20
Anticipated expiration: 2030-03-26

Abstract

The utility model relates to a bumper and vehicle for vehicle, wherein bumper includes shell and a plurality of buffer structure for vehicle, a plurality of buffer structure detachably set up the inboard at the shell, and be configured as can cover the whole region of locomotive, be provided with the collision induction system who is used for acquireing the collision signal on at least one buffer structure, like this, each buffer structure all can form into independent buffering space, after the vehicle bumps, can only do independent replacement to the buffer structure who has damaged, the buffer structure that all the other do not damage then can continue to use, compare in integral bumper as long as there is a damage mode that just needs whole changes, the cost that the maintenance needs has been reduced.

Description

Vehicle bumper and vehicle

Technical Field

The present disclosure relates to the field of vehicle safety technologies, and in particular, to a bumper for a vehicle and a vehicle using the same.

Background

The bumper is an important means for passive safety of the vehicle, and can provide certain protection for pedestrians and passengers in the vehicle when a collision occurs. At present, the bumper of a vehicle is generally designed in an integral manner, the whole bumper is damaged when collision happens, the whole bumper needs to be replaced or maintained, and the maintenance cost is increased

In addition, in order to improve the driving safety of the vehicle, a certain collision detection means is generally provided, and the collision detection of the vehicle is generally divided into a severe collision and a light collision. When a severe collision occurs, a large acceleration change occurs, and therefore whether a collision occurs can be judged by providing an acceleration sensor, whereas when a light collision occurs, since the acceleration change is small, for a vehicle operated by a driver, whether a collision occurs can be judged subjectively by the driver, but for an unmanned vehicle, a low-speed light collision cannot be detected effectively.

SUMMERY OF THE UTILITY MODEL

It is an object of the present disclosure to provide a bumper for a vehicle that at least partially solves the above-mentioned problems of the prior art.

In order to achieve the above object, the present disclosure provides a bumper for a vehicle, comprising: the vehicle-mounted collision sensor comprises a shell and a plurality of buffering structures, wherein the buffering structures are detachably arranged on the inner side of the shell and are configured to cover the whole area of a vehicle head, and at least one buffering structure is provided with a collision sensing device for acquiring a collision signal.

Optionally, the buffer structure comprises a first buffer layer and a second buffer layer, the collision sensing device is arranged between the first buffer layer and the second buffer layer, and the second buffer layer close to the outer shell is configured to be slidable relative to the first buffer layer far from the outer shell along the traveling direction of the vehicle so as to be able to trigger the collision sensing device.

Optionally, the second cushioning layer is slidably coupled to the first cushioning layer and a static friction force is formed between the second cushioning layer and the first cushioning layer.

Optionally, the first buffer layer includes bellying and backstop flange portion, backstop flange portion is kept away from the shell sets up, the second buffer layer cover is established the outside of bellying and in the surface of bellying has static friction, the collision sensing device passes through the installing support to be fixed the orientation of flange backstop portion one side of second buffer layer.

Optionally, the first buffer layer and the second buffer layer are made of flexible foam materials respectively.

Optionally, at least one of the plurality of buffer structures is provided with a car light, and the housing is provided with a first window matched with the car light.

Optionally, at least one of the plurality of buffer structures is provided with a distance measuring device for obtaining a distance between the vehicle and a front obstacle, and the housing is provided with a second window for matching with the distance measuring device.

Optionally, at least one of the plurality of buffer structures is provided with a speed measuring device for obtaining the vehicle speed.

According to another aspect of the present disclosure, a vehicle is provided, which includes the above bumper and a controller, the controller is connected to the collision sensing device, and is used for responding to the acquired vehicle collision signal and braking the vehicle according to the vehicle collision signal.

Optionally, the vehicle is an unmanned vehicle.

Through above-mentioned technical scheme, buffer structure is provided with a plurality ofly and detachably sets up the inboard at the shell, and like this, each buffer structure all can form independent buffering position, and after the vehicle bumps, can only do independent replacement to the buffer structure who has damaged, and remaining undamaged buffer structure then can continue to use, just needs the mode of whole changes as long as there is a damage in comparison with integral bumper, has reduced the required cost of maintenance.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic view of a vehicle bumper according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic structural view of the vehicle bumper of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the vehicle bumper of FIG. 1 with the outer shell removed;

FIG. 4 is a schematic view of the vehicle bumper of FIG. 3 with the outer shell removed and from another perspective;

FIG. 5 is a schematic illustration of a cushioning structure provided by an exemplary embodiment of the present disclosure;

FIG. 6 is a schematic view of the cushioning structure of FIG. 5 taken along line A-A;

fig. 7 is a schematic structural view of an unmanned vehicle chassis provided in an exemplary embodiment of the present disclosure.

Description of the reference numerals

1 housing 2 buffer structure

21 first buffer layer 211 protrusions

212 stop flange portion 22 second buffer layer

3 Collision sensing device 4 mounting bracket

6 ultrasonic radar of 5 car light

7 millimeter wave radar 10 bumper

100 unmanned vehicle chassis

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless otherwise specified, terms of orientation such as "front" and "rear" are used with respect to the front and rear of the traveling direction of the vehicle, for example, the front position is front, the rear position is rear, "inner" and "outer" refer to the inside and outside of the outline of the corresponding structural member, and the terms "first" and "second" are used not to indicate any order or importance but to distinguish one element from another. In addition, when the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements, unless otherwise indicated.

As shown in fig. 1 to 4, the present disclosure provides a bumper 10 for a vehicle, which bumper 10 may be applied to an unmanned smart vehicle, for example, an unmanned cargo delivery vehicle for delivering cargo in a logistics system, or an unmanned takeout delivery vehicle for delivering takeout, or an unmanned transit vehicle for transferring cargo between a plurality of racks. The vehicle bumper includes a housing 1 and a plurality of bumper structures 2. Referring also to fig. 7, a bumper 10 for a vehicle may be installed at a front end, i.e., a nose end, of a chassis 100 of the unmanned vehicle for contacting an obstacle in the event of a collision. A plurality of buffer structures 2 are detachably provided at the inner side of the housing 1 for providing a buffering force to pedestrians or passengers in the vehicle when the vehicle collides. The cushioning force is relative to a hard contact that absorbs a portion of the impact energy during a collision to minimize impact injury. The plurality of buffer structures 2 are detachably arranged on the inner side of the shell, so that each buffer structure can be formed into an independent buffer part, after the vehicle is collided, only the damaged buffer structure can be independently replaced, and the rest undamaged buffer structures can be continuously used. Compared with the mode that the integral bumper needs to be replaced when only one part of the bumper is damaged, the cost required by maintenance is reduced. Meanwhile, the plurality of buffer structures 2 are configured to cover the entire area of the vehicle head, wherein the entire area of the vehicle head includes, but is not limited to, the entire area of the vehicle head in the width direction and the height direction of the vehicle head, so that the buffer structures 2 can provide a buffering force for pedestrians or passengers in the vehicle regardless of which partial area of the vehicle head collides.

A collision sensor device 3 for detecting a collision signal is arranged on at least one damping structure 2. When the vehicle bumps, the buffer structure 2 deforms after being extruded by the shell 1, and then the collision sensing device 3 is triggered, and the collision sensing device 3 can brake the vehicle according to the acquired collision signal, so that secondary damage caused by untimely parking is avoided. The collision sensing means 3 may employ a sensing means capable of generating a signal according to a pressure change, such as a pressure sensor. The number of the collision sensing devices 3 can be one, and the collision sensing devices are arranged at the position of the vehicle head where collision contact easily occurs, for example, the front of the vehicle head, or the number of the collision sensing devices 3 can also be provided with a plurality of collision sensing devices 3, and the collision sensing devices 3 can be configured to be distributed in the whole area of the vehicle head in the width direction and the height direction of the vehicle head, so that no matter which part of the area of the vehicle head collides, the collision sensing devices can be effectively detected, and the vehicle can be braked in time to reduce collision damage.

Furthermore, the buffer structure 2 is arranged inside the housing 1, and the plurality of collision sensing devices 3 are arranged on the buffer structure 2, i.e. the plurality of collision sensing devices 3 are also located inside the housing 1. Generally, the collision switch has a structure that flexible rubber is exposed, so, a plurality of collision switches 3 are arranged on the inner side of the shell 1, the problem that rubber aging is accelerated due to long-time exposure to the external environment can be avoided, and the service life is prolonged.

The specific implementation manner of the buffer structure 2 is not limited in this disclosure, and any structure or method that can provide a buffering force for a pedestrian or an occupant in a vehicle when a vehicle is in a collision and trigger a collision sensing device can be applied to this disclosure. According to an embodiment of the present disclosure, as shown in fig. 5 and 6, the buffer structure 2 may include a first buffer layer 21 and a second buffer layer 22, and the collision sensing apparatus 3 is disposed between the first buffer layer 21 and the second buffer layer 22. The second buffer layer 22 close to the outer shell 1 is configured to be slidable in the traveling direction of the vehicle relative to the first buffer layer 21 far from the outer shell 1 so as to be able to trigger the collision sensing device 3. Thus, when the vehicle collides, the outer shell 1 deforms to the inner side under the impact force and first pushes the second buffer layer 22 located inside the outer shell 1, and the second buffer layer 22 slides to the first buffer layer 21 under the pushing of the outer shell 1 and contacts with the collision sensing device 3 located between the first buffer layer 21 and the second buffer layer 22 to trigger the collision sensing device 3. The collision sensing device 3 is disposed between the first buffer layer 21 and the second buffer layer 22, and can be triggered simultaneously when the second buffer layer 22 slides towards the first buffer layer 21, so that corresponding collision signals can be quickly generated to brake the vehicle in time.

As a way of achieving the second cushion layer 22 being able to slide in the traveling direction of the vehicle relative to the first cushion layer 21, the second cushion layer 22 is slidably attached to the first cushion layer 21, and a static friction force is formed between the second cushion layer 22 and the first cushion layer 21, that is, a static friction force is provided at a sliding surface where the second cushion layer 22 and the first cushion layer 21 contact each other. The magnitude of this static friction can be selectively set depending on the application, for example, if it is desired to obtain a more sensitive collision response signal, the static friction can be reduced, whereas the static friction can be increased by increasing the roughness of the contact surface. Because the existence of static friction for in the normal driving's of vehicle in-process, can make first buffer layer 21 and second buffer layer 22 keep relative position, prevent that second buffer layer 22 from touching collision sensing device 3 by mistake and leading to the unexpected parking of vehicle to cause danger, and through the size of reasonable setting static friction, when the vehicle bumps, can make second buffer layer 22 slide smoothly and trigger collision sensing device 3.

Further, with continued reference to fig. 6, the first buffer layer 21 may include a protrusion 211 and a stop flange 212, the stop flange 212 is disposed away from the housing 1, the second buffer layer 22 is sleeved outside the protrusion 211 and has static friction on the outer surface of the protrusion 211, that is, static friction is formed between the inner side surface of the second buffer layer 22 and the outer side surface of the protrusion 211 of the first buffer layer 21. The collision sensor device 3 is fixed to the flange stop 212 on the side facing the second damping layer 22 by the mounting bracket 4, specifically, the mounting bracket 4 may be fixed to the stop flange 212 on the side facing the second damping layer 22 by, for example, adhesive bonding, and the collision sensor device 3 is fixed to the mounting bracket 4 on the side facing the second damping layer 22. The stopping flange 212 may function as a stopper for the collision sensor 3, and when the second buffer layer 22 slides towards the first buffer layer 21 under an external force, the collision sensor 3 is prevented from sliding out of the buffer structure 2 and cannot be effectively triggered.

A plurality of the buffer constructions 2 of the same row may share one mounting bracket 4, while referring to fig. 4 and 5, for example, the mounting bracket 4 may extend in the lateral direction of the vehicle body, and a plurality of the buffer constructions 2 may be detachably provided in turn on the mounting bracket 4. When part of the cushion structure 2 is damaged by the collision, the damaged cushion structure 2 may be detached from the mounting bracket 4.

The first buffer layer 21 and the second buffer layer 22 may be made of a flexible foam material, such as expanded polypropylene or other materials with similar physical textures. The material can deform to a certain degree when collision occurs, so that the material can provide buffer force for pedestrians or passengers in a vehicle, and can still maintain the basic shape without excessively deforming to cause serious damage to the vehicle.

According to other embodiments of the present disclosure, in addition to the above-described structure including the first buffer layer 21 and the second buffer layer 22, the buffer structure may also adopt a structure having an elastic member, for example, an elastic member, such as a compression spring, disposed between the outer shell and the vehicle head, and deformed by the elastic member to absorb a part of the impact energy when the vehicle collides. Likewise, the sensitivity of the collision signal is adjusted by setting the deformation capability of the elastic component. The collision sensing device can be further arranged between the elastic part and the vehicle head, so that the elastic part deforms to extrude and trigger the collision sensing device.

In order to improve the safety of driving at night, in the present disclosure, at least one of the plurality of buffer structures 2 is provided with the lamp 5, and as shown in fig. 1 to 4, for example, two lamps 5 may be provided at an interval at a position of the buffer structure 2 in the middle of the vehicle head. The lamp 5 is filled between the outer shell 5 and the front side surface of the bumper structure 2, and further, may be fixed to the front side surface of the bumper structure 2 by means of adhesion in order to maintain the fixation of the position of the lamp 5. The housing 1 may be provided with a first window for matching with the car light 5, so that light emitted by the car light 5 can penetrate through the housing 1. The first window can be a completely hollow design, the car lamp 5 can be partially clamped in the first window, or the first window can also be made of a transparent material and has a light transmission effect.

The vehicle bumper of the present disclosure is particularly suitable for an unmanned vehicle because it has an automatic detection of a light collision and a braking capability. In order to further improve the safety performance when the unmanned vehicle is driven, at least one of the plurality of buffer structures 2 is provided with a distance measuring device for obtaining the distance between the vehicle and the obstacle in front. The distance measuring device can enable the unmanned vehicle to pre-judge the position relation between the unmanned vehicle and the obstacle in advance, so that the unmanned vehicle can be decelerated or stopped according to factors such as the speed of the unmanned vehicle. Specifically, the distance measuring device may include the ultrasonic radar 6 and the millimeter wave radar 7, wherein the ultrasonic radar 6 is simple in distance measuring method, low in cost, high in measurement accuracy in a short distance range, and suitable for determining the distance between the unmanned vehicle and the obstacle when the unmanned vehicle is running at a low speed or parked, and the millimeter wave radar 7 is relatively long in detection distance and has extremely high penetrating performance, and is suitable for determining the distance between the unmanned vehicle and the obstacle under the conditions of adaptive cruise, brake assistance, vehicle distance keeping and the like. Through the combined application of the ultrasonic radar 6 and the millimeter wave radar 7, the driving safety of the unmanned vehicle can be improved in multiple scenes. The shell 1 is provided with a second window matched with the ultrasonic radar 6. Likewise, the distance measuring device can also be arranged on the buffer structure 2 in the middle of the vehicle head. It should be understood that the present disclosure is not limited to the particular type of ranging device used, for example, lidar may also be used in the present disclosure.

According to another aspect of the present disclosure, a vehicle is provided, which may be an ordinary vehicle driven by a driver or an unmanned intelligent vehicle. For unmanned intelligent vehicles, for example, unmanned cargo delivery vehicles for delivering cargo in logistics systems, or unmanned take-away delivery vehicles for delivering take-away, or unmanned transit vehicles for transferring cargo between multiple racks. As shown in fig. 7, the unmanned vehicle may include a chassis 100 having a bumper 10, and a distribution device, such as a distribution box, may be mounted on the chassis 100 according to actual needs, and the distribution device may be flexibly and detachably disposed on the chassis 100, so as to be capable of being switched in different usage scenarios. Further, the unmanned vehicle further comprises a controller (not shown in the figure), which is connected with the collision sensing device 3 and is used for responding to the acquired vehicle collision signal and braking the vehicle according to the vehicle collision signal. The controller may be integrated with the ECU of the entire vehicle, or a controller connected to the brake system may be separately provided, which is not limited by the present disclosure.

When the unmanned vehicle slightly collides in a low-speed running state, an obstacle firstly contacts the shell 1, the shell 1 pushes the inner side surface of the second buffer layer 22 to overcome the static friction force between the inner side surface of the convex part 211 of the first buffer layer 21 and slide towards the first buffer layer 21, the second buffer layer 22 extrudes the collision sensing device 3 in the sliding process, the collision sensing device 3 generates a collision signal, and the controller receives the collision signal and sends out a designated control braking system to brake. In the collision process, the buffer structure 2 comprising the first buffer layer 21 and the second buffer layer 22 is made of foam materials, so that buffer layers are formed between the vehicle and the obstacle, and collision damage is reduced. The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, various possible combinations will not be separately described in this disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A bumper for a vehicle, comprising: the vehicle-mounted collision sensor comprises a shell (1) and a plurality of buffer structures (2), wherein the plurality of buffer structures (2) are detachably arranged on the inner side of the shell (1) and are configured to cover the whole area of a vehicle head, and a collision sensing device (3) used for acquiring a collision signal is arranged on at least one buffer structure (2).

2. Vehicle bumper according to claim 1, characterized in that the bumper structure (2) comprises a first (21) and a second (22) bumper layer, the collision sensing means (3) being arranged between the first (21) and second (22) bumper layers, the second bumper layer (22) being close to the shell (1) being configured to be slidable in the direction of travel of the vehicle with respect to the first bumper layer (21) remote from the shell (1) to be able to trigger the collision sensing means (3).

3. The vehicle bumper of claim 2, wherein the second bumper layer (22) is slidably attached to the first bumper layer (21) and a static friction force is formed between the second bumper layer (22) and the first bumper layer (21).

4. The vehicle bumper according to claim 3, wherein the first buffer layer (21) comprises a protrusion portion (211) and a stop flange portion (212), the stop flange portion (212) is disposed away from the housing (1), the second buffer layer (22) is sleeved on the outer side of the protrusion portion (211) and has static friction on the outer surface of the protrusion portion (211), and the collision sensing device (3) is fixed on one side of the stop flange portion (212) facing the second buffer layer (22) through a mounting bracket (4).

5. Vehicle bumper according to claim 2, characterized in that the first cushioning layer (21) and the second cushioning layer (22) are each made of a flexible foamed material.

6. Vehicle bumper according to claim 1, characterized in that at least one of said cushioning structures (2) is provided with a lamp (5), said shell (1) being provided with a first window for matching with said lamp (5).

7. Vehicle bumper according to claim 1, characterized in that at least one of said cushioning structures (2) is provided with distance measuring means for obtaining the distance between the vehicle and the obstacle in front, said shell (1) being provided with a second window for matching said distance measuring means.

8. A vehicle, characterized by comprising:

a bumper for a vehicle according to any one of claims 1 to 7; and

and the controller is connected with the collision sensing device (3) and used for responding to the acquired vehicle collision signal and braking the vehicle according to the vehicle collision signal.

9. The vehicle of claim 8, wherein the vehicle is an unmanned vehicle.